The invention relates to a method for determining the thickness (S) of a material strip (5) when the material strip (5) is fed to the machining zone of a machine tool (1). In the process, the material strip (5) is tensioned between two rotatable rollers (3, 4), the relative position of which to one another (reference relative position) at a certain rotational angle position to one another (reference rotational angle constellation) was ascertained in the original state with clean rollers and the roller spacing "zero". When the material strip (5) is tensioned between the rollers (3, 4), if a rotational angle constellation of the two rollers (3, 4) to one another corresponds to the reference rotational angle constellation, the relative position of the first roller (3) to the second roller (4) is ascertained (strip thickness relative position) and subsequently the strip thickness (S) of the material strip (5) is determined from a comparison of the strip thickness relative position with the reference relative position. The method according to the invention makes it possible for the influence of concentricity errors of the two rollers (3, 4) on the measuring precision to be eliminated.
A method for operating a punching press with a press plunger driven by a crank drive, which operates in a machining zone of the punching press against a stationary clamping plate, and with a servo feed apparatus for intermittently feeding a band of material to be processed to the machining zone. In punching mode, the press plunger is moved back and forth by the crank drive between a first movement dead point (0°), in which the press plunger is at maximum distance from the clamping plate, and a second movement dead point (180°), in which the press plunger is at minimum distance from the clamping plate. In the process, the material band is pushed by the servo feed apparatus around the first movement dead point (0°) in a first rotation angle window (3) of the crank drive by a certain length into the machining zone and processed in a second rotation angle window during the feed pauses. The feed movement of the servo feed drive takes place according to an electronically defined feed movement profile (5), which is followed in the first rotation angle window (3) in an electronically synchronized manner to the rotation of the crank drive (4). When a press stop (6) is triggered in the first rotation angle window (3), the synchronization of the feed movement profile (5) with the rotation of the crank drive (4) is canceled and the feed movement profile (5) is moved to the end independently of the rotation of the crank drive (4). This mode of operation reduces the maximum torque requirement of the feed axes for servo feeds operated angularly synchronously with the crank drive of the press plunger, so that smaller and therefore more cost-effective servo drives can be used or more load can be moved with a given servo drive.
B30B 15/14 - Commande des presses actionnées mécaniquement
B21D 43/02 - Avancement du matériau en fonction du mouvement de la matrice ou de l'outil
B30B 1/26 - Presses, utilisant un élément pilonnant, caractérisées par le mode d'entraînement du pilon, la pression étant transmise au pilon ou à la platine de presse directement ou uniquement par l'intermédiaire d'organes travaillant en simple poussée ou traction par des cames, des excentriques ou des vilebrequins
A method for determining the thickness of a material strip (5) when feeding the material strip (5) to the processing zone of a machine tool (1). The material strip (5) is clamped between two rotatable rollers (3, 4), whose relative position to each other in the original state with clean rollers and “zero” roller spacing was detected (reference relative position) and whose relative position to each other in the intended feed operation is determined for each feed interval (current relative position). The difference between the current relative position and the reference relative position, which gives the thickness of the strip material (5) when the rollers are clean in their original state, is corrected according to the invention for any changes in diameter of the rollers (3, 4) that may have occurred, for example, due to contamination. For this purpose, in the original state with clean rollers (3, 4) in a reference feed operation, an assigned reference angle of rotation of the roller (3) is additionally detected for at least one of the rollers (3) at a detected reference feed length, so that the original ratio of feed length/angle of rotation for this roller (3) is known and thus its original diameter is also clearly defined. If there are deviations from these parameters during the intended feed operation, the deviations are converted into a diameter change of the at least one roller (3) and taken into account in the calculation of the thickness of the material strip (5). The invention makes it possible to solve today's problems in strip thickness measurements with rollers.
B21D 43/09 - Avancement du matériau en fonction du mouvement de la matrice ou de l'outil au moyen d'un élément mécanique coopérant avec le matériau au moyen de rouleaux par une ou plusieurs paires de rouleaux pour l'alimentation de matières en feuilles ou en bandes
B21C 51/00 - Dispositifs de mesure, de calibrage, d'indication, de comptage ou de marquage, spécialement conçus pour être utilisés dans la production ou la manipulation des matériaux concernés par les sous-classes
B21D 28/02 - Découpage à l'emporte-pièce ou poinçonnage de flans ou d'objets, avec ou sans production de déchetsEntaillage
G01B 5/06 - Dispositions pour la mesure caractérisées par l'utilisation de techniques mécaniques pour mesurer la longueur, la largeur ou l'épaisseur pour mesurer l'épaisseur
4.
METHOD FOR FEEDING A MATERIAL STRIP TO THE MACHINING ZONE OF A MACHINE TOOL
A method for feeding a material strip to the processing zone of a punch press, wherein the material strip is clamped between a pair of feed rollers and is fed intermittently by rotating the feed rollers at intervals, and wherein the following steps are carried out after each feed of the material strip and before the next feed of the material strip in a feed pause with the material strip stationary and clamped between the feed rollers: holding the material strip by fixing the feed rollers with a certain holding torque; temporarily reducing or eliminating the holding torque of the feed rolls; positioning the strip of material with the holding torque of the feed rollers reduced or removed by inserting one or more pilot pins into associated pilot holes in the strip of material, the strip of material being displaced by the pilot pin or pins and the feed rollers being rotated by the strip of material clamped between them as it is displaced, optionally overcoming the reduced holding torque; and re-extending the pilot pin(s) from the pilot holes of the material belt. This method makes it possible to achieve a highly precise strip feed even without complex intermediate lifting mechanisms.
A method for operating a servo motor (10) driven turning station (5, 6, 7) of a stacking tool for a punch press includes the following steps: determining a target turning acceleration curve of the turning station (5, 6, 7) in the acceleration phase (A) of the turning increment (D); carrying out a reference acceleration run of the turning station (5, 6, 7); determining during the reference acceleration run the reference angular velocity (ωref) of the turning station (5, 6, 7); determining from the target turning acceleration curve the target angular velocity (ωsoll); calculating a target drive torque of the servo motor, at which the target angular velocity (ωsoll) results, from the relationship, known from the reference acceleration run; and accelerating the turning station (5, 6, 7) with the servo motor (10) in the acceleration phase (A).
B21D 28/06 - Fabrication de plusieurs pièces à partir d'un même flanTravail sans production de déchets
G05B 19/18 - Commande numérique [CN], c.-à-d. machines fonctionnant automatiquement, en particulier machines-outils, p. ex. dans un milieu de fabrication industriel, afin d'effectuer un positionnement, un mouvement ou des actions coordonnées au moyen de données d'un programme sous forme numérique
The invention relates to a method for operating a punching press having a press ram, which is driven by a crank drive and which operates against a fixed clamping plate in a processing zone of the punching press, and having a servo feed apparatus for intermittently feeding a material strip that is to be processed to the processing zone. During the punching operation, the press ram is moved back and forth by the crank drive between a first movement dead centre (0°), in which the press ram is at a maximum distance from the clamping plate, and a second movement dead centre (180°), in which the press ram is at a minimum distance from the clamping plate. Here, the material strip is fed by a certain length into the processing zone by the servo feed apparatus around the first movement dead centre (0°) in a first rotation angle window (3) of the crank drive and processed in a second rotation angle window in the feed pauses. The feed movement of the servo feed apparatus occurs according to an electronically defined feed movement profile (5) which, in the first rotation angle window (3), is run so as to be electronically synchronized with the rotation of the crank drive (4). When triggering a press stop (6) in the first rotation angle window (3), the synchronization of the feed movement profile (5) with the rotation of the crank drive (4) is cancelled and the feed movement profile (5) is run up to the end independently of the rotation of the crank drive (4). By virtue of this mode of operation according to the invention, the maximum torque requirement of the feed axes is reduced with the servo feeds operated in an angularly synchronous manner with the crank drive of the press ram, with the result that smaller, and thus more cost-effective, servo drives can be used, or more load can be moved with a given servo drive.
The invention relates to a method for intermittently supplying a strip- or wire-form semifinished material to a press, preferably to a punch press. In the process, the semifinished material to be supplied is fed in a feeding phase by means of a sliding gripper (14) which is driven by a first drive (1) during feeding. In a non-feeding phase, the semifinished material to be supplied is held fast by means of a stationary clamping gripper (18) and the sliding gripper (14) is retracted by a second drive (6) which is formed separately from the first drive (1). The method according to the invention makes it possible to optimize the drive in servo-gripper feeds. The use according to the invention of separate drives (1, 6) for the feeding movement and the retracting movement of the sliding gripper (14) makes a distinct downtime available for each of the drives (1, 6), with the result that, compared with the currently known solutions, with the same feed performance, a clear reduction in thermal load becomes possible or, with the same thermal load, a clear increase in the drive performance becomes possible.
B21D 43/10 - Avancement du matériau en fonction du mouvement de la matrice ou de l'outil au moyen d'un élément mécanique coopérant avec le matériau au moyen de pinces ou de griffes
B21D 43/00 - Dispositifs d'alimentation, de positionnement ou de stockage combinés à des appareils pour travailler ou traiter les tôles, les tubes ou les profilés, disposés dans ces appareils ou spécialement adaptés pour être utilisés en association avec ces appareilsAssociation de dispositifs de coupe avec ces appareils
B21D 43/11 - Avancement du matériau en fonction du mouvement de la matrice ou de l'outil au moyen d'un élément mécanique coopérant avec le matériau au moyen de pinces ou de griffes pour l'alimentation de matières en feuilles ou en bandes
B23Q 7/04 - Agencements pour la manipulation des pièces, spécialement combinés aux machines-outils ou disposés dans ces machines ou spécialement conçus pour être utilisés en relation avec ces machines, p. ex. pour le transport, le chargement, le positionnement, le déchargement, le triage au moyen de pinces
B30B 1/06 - Presses, utilisant un élément pilonnant, caractérisées par le mode d'entraînement du pilon, la pression étant transmise au pilon ou à la platine de presse directement ou uniquement par l'intermédiaire d'organes travaillant en simple poussée ou traction par un mécanisme à levier actionné par des cames, des excentriques ou des vilebrequins
B30B 15/00 - Parties constitutives des presses ou accessoires de pressesMesures auxiliaires prises en rapport avec le pressage
9.
METHOD FOR DETERMINING THE THICKNESS OF A MATERIAL STRIP DURING THE FEED OF THE MATERIAL STRIP TO THE MACHINING ZONE OF A MACHINE TOOL
The invention relates to a method for determining the thickness of a material strip (5) during the feed of the material strip (5) to the machining zone of a machine tool (1). Here, the material strip (5) is clamped in between two rotatable rolls (3, 4), the relative position of which with respect to one another was detected in the original state with clean rolls and a roll spacing "zero" (reference relative position), and the relative position of which with respect to one another is determined during advancing operation as intended for each advancing interval (actual relative position). According to the invention, the difference between the actual relative position and the reference relative position which results in the thickness of the strip material (5) with clean rolls in the original state, is corrected by any diameter changes of the rolls (3, 4) which occur, for example, as a result of contamination. To this end, in the original state with clean rolls (3, 4) during reference advancing operation, an associated reference rotational angle of the roll (3) is additionally detected for at least one of the rolls (3) in the case of a detected reference advancing length, with the result that the original ratio of advancing length/rotational angle is known for said roll (3), and therefore the original diameter of the latter is also clearly defined. If deviations of said parameters arise during advancing operation as intended, the deviations are converted into a diameter change of the at least one roll (3) and are taken into consideration in the calculation of the thickness of the material strip (5). The invention makes it possible for the current problems in the case of strip thickness measurements with rolls to be eliminated.
G01B 5/06 - Dispositions pour la mesure caractérisées par l'utilisation de techniques mécaniques pour mesurer la longueur, la largeur ou l'épaisseur pour mesurer l'épaisseur
10.
METHOD FOR OPERATING A TURNING STATION, DRIVEN BY A SERVOMOTOR, OF A PACKETIZING TOOL FOR A PUNCH PRESS
refsollsollrefref) and the drive torque of the servomotor (10); and f) accelerating the turning station (5, 6, 7) by way of the servomotor (10) in the acceleration phase (A) of the turning increment (D) with the servomotor (10) providing the setpoint drive torque.
G05B 19/416 - Commande numérique [CN], c.-à-d. machines fonctionnant automatiquement, en particulier machines-outils, p. ex. dans un milieu de fabrication industriel, afin d'effectuer un positionnement, un mouvement ou des actions coordonnées au moyen de données d'un programme sous forme numérique caractérisée par la commande de vitesse, d'accélération ou de décélération
H02K 15/00 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques
11.
METHOD FOR OPERATING A STAMPING PRESS, AND STAMPING PRESS FOR OPERATION ACCORDING TO THE METHOD
The invention relates to a method for operating a stamping press (1) comprising a ram (2) which operates against a bolster plate (3) and the position of which can be adjusted relative to the bolster plate (3), when the press is operated as intended, the ram (2) supporting a first tool part (4) and the bolster plate (3) supporting a second tool part (5). The movement of the ram (2) towards the bolster plate (3) is delimited, when operated as intended, by adjustable stops (6) which are formed on the press (1) separately from the tool (4, 5), the impact force of said stops being monitored and used to adjust the ram position during operation. The invention dispenses with the need, even in stamping tools (4, 5) with dies, for dead stops situated in the tool (4, 5) in order to guarantee the closing dimension, whilst simultaneously allowing complete control over the process forces. Thus, this also guarantees that the ram (2) is parallel to the bolster plate (3) at the lower dead point.
The invention relates to a spring-damper element (2) for mounting a punching press (1), with a hydraulic damper unit (3) with a first fluid chamber (4) and a second fluid chamber (5), wherein, in the intended operation, a hydraulic fluid is displaced from the first fluid chamber (4) via a throttle point (6) into the second fluid chamber (5) when the spring-damper element (2) is compressed. The damper unit further comprises an overload valve (7) arranged between the first fluid chamber (4) and the second fluid chamber (5), which overload valve opens when a specific fluid pressure is reached in the first fluid chamber (4) or when a specific pressure difference is reached between the first fluid chamber (4) and the second fluid chamber (5) and releases a bypass (8) via which hydraulic fluid then flows from the first fluid chamber (4) into the second fluid chamber (5) bypassing the throttle point (6). Thereby, the spring-damper element (2) is designed in such a way that the fluid pressure or the pressure difference, respectively, at which the overload valve (7) opens can be adjusted when the spring-damper element (2) is installed as intended. With such spring-damper elements according to the invention, it becomes possible to create a mounting arrangement for a punching press, the damping characteristics of which can be adjusted without significant effort, such that a variable operation of the press in wide ranges becomes possible while keeping the ground loading to a minimum in each case.
F16F 15/02 - Suppression des vibrations dans les systèmes non rotatifs, p. ex. dans des systèmes alternatifsSuppression des vibrations dans les systèmes rotatifs par l'utilisation d'organes ne se déplaçant pas avec le système rotatif
B26D 5/12 - Moyens pour actionner l'outil de coupe afin d'effectuer la coupe au moyen de la pression d'un fluide
B26D 7/26 - Moyens de montage ou de réglage de l'outil de coupeMoyens de réglage de la course de l'outil de coupe
B26F 1/40 - DécoupageDécoupage à l'emporte-pièce utilisant une presse, p. ex. du type à pilon
F16F 15/023 - Suppression des vibrations dans les systèmes non rotatifs, p. ex. dans des systèmes alternatifsSuppression des vibrations dans les systèmes rotatifs par l'utilisation d'organes ne se déplaçant pas avec le système rotatif utilisant des moyens fluides
F16F 15/027 - Suppression des vibrations dans les systèmes non rotatifs, p. ex. dans des systèmes alternatifsSuppression des vibrations dans les systèmes rotatifs par l'utilisation d'organes ne se déplaçant pas avec le système rotatif utilisant des moyens fluides comprenant des dispositifs de commande
F16F 13/00 - Ensembles comportant des ressorts du type non à fluide ainsi que des amortisseurs de vibrations, des amortisseurs de chocs ou des ressorts à fluide
13.
METHOD FOR SUPPLYING A MATERIAL STRIP TO THE MACHINING ZONE OF A MACHINE TOOL
The invention relates to a method for supplying a material strip to the machining zone of a punching press, wherein the material strip is clamped between a pair of feed rollers and is advanced at intervals by means of the rotation, at intervals, of the feed rollers, and wherein the following steps are carried out after every advance of the material strip and before the next advance of the material strip in a feed pause when the material strip is stationary and clamped between the feed rollers: a) holding the material strip by holding the feed rollers with a particular holding torque; b) temporarily reducing or increasing the holding torque of the feed rollers; c) positioning the material strip with reduced or increased holding torque of the feed rollers by introducing one or more pilot pins into allocated pilot openings in the material strip, wherein the material strip is advanced by the pilot pin or pilot pins and the feed rollers are rotated by the material clamped between them when the material strip is displaced, the reduced holding torque being overcome as necessary; and d) removing the pilot pin or pilot pins from the pilot openings of the material strip. With the method according to the invention, it is possible to achieve an extremely precise strip advance without complex piloting mechanisms.
B21D 43/09 - Avancement du matériau en fonction du mouvement de la matrice ou de l'outil au moyen d'un élément mécanique coopérant avec le matériau au moyen de rouleaux par une ou plusieurs paires de rouleaux pour l'alimentation de matières en feuilles ou en bandes
B21D 43/06 - Avancement du matériau en fonction du mouvement de la matrice ou de l'outil au moyen d'un élément mécanique coopérant avec le matériau au moyen de pièces de liaison mâles ou femelles s'engageant dans des parties correspondantes de la tôle ou de la pièce analogue à travailler, p. ex. au moyen de boulons de support ou de section rainurée dans les supports
The invention relates to a punching press with a crank drive or eccentric drive, comprising a crankshaft or eccentric shaft (1a, 1b) and an active connecting rod (9a, 9b) for producing a reciprocating motion of the ram (13). The punching press also comprises counterweights (2a, 2b) for compensating for the vertical and horizontal inertial forces and is designed such that the horizontal driving motions that are necessary for the horizontal mass balancing, are taken up directly on the crankshaft or eccentric shaft (1a, 1b), specifically preferably laterally on the crankshaft or eccentric shaft (1a, 1b).
B30B 1/06 - Presses, utilisant un élément pilonnant, caractérisées par le mode d'entraînement du pilon, la pression étant transmise au pilon ou à la platine de presse directement ou uniquement par l'intermédiaire d'organes travaillant en simple poussée ou traction par un mécanisme à levier actionné par des cames, des excentriques ou des vilebrequins
B30B 15/00 - Parties constitutives des presses ou accessoires de pressesMesures auxiliaires prises en rapport avec le pressage
15.
METHODS FOR OPERATING A STAMPING PRESS AND STAMPING PRESSES FOR BEING OPERATED ACCORDING TO THE METHODS
The invention relates to methods for operating a stamping press (1), comprising a ram (2), which operates against a (in particular fixed) bolster plate (3) and the position of which can be set with respect to the bolster plate (3) during operation as intended, wherein the ram (2) bears a first die part (4) and the bolster plate (3) bears a second die part (5), wherein the two die parts (4, 5) provide stop faces (6a, 7a), which are assigned to one another and, when the die is completely closed, form one or more fixed stops for delimiting the closing clearance of the die (4, 5) internally within the die. According to a first method according to the invention, during operation of the stamping press (1) as intended, the distance (a, a1, a2, a3) of the two die parts (4, 5) from one another or a parameter (b1, b2, b3, c) representing this distance at a specific point (P1, P2, P3) of the ram movement at which the die (4, 5) is not completely closed is monitored and the position of the ram is changed in dependence on the result of the monitoring. According to a second method according to the invention, during operation of the stamping press as intended, at least one of the fixed stops is monitored for contact between the stops and the position of the ram is changed in dependence on the result of the monitoring. With the methods according to the invention, it is possible even in the case of dies (4, 5) with fixed stops and irrespective of the skill and experience of the operator for the process to be conducted energy-efficiently and with little wear.
B30B 1/26 - Presses, utilisant un élément pilonnant, caractérisées par le mode d'entraînement du pilon, la pression étant transmise au pilon ou à la platine de presse directement ou uniquement par l'intermédiaire d'organes travaillant en simple poussée ou traction par des cames, des excentriques ou des vilebrequins
B30B 15/14 - Commande des presses actionnées mécaniquement
16.
METHOD FOR OPERATING A COMBINED CLUTCH- AND BRAKE DEVICE OF A PUNCH PRESS
The invention relates to a method for operating a combined clutch- and brake device (5) of a punch press (1), equipped with dry friction linings (7, 8). The friction linings (7, 8) are located in a chamber (R) which is sealed off from the environment of the punch press (1) and which is filled with a dry, oil-free gaseous medium, in particular dry, oil-free air. This effectively prevents moisture and oil mist from entering the region of the friction linings from the area surrounding the press, and allows a constant friction coefficient to be maintained over the mechanical service life of the friction linings.
Machines, namely punching machines and feed units (strip and
gripper), including parts and accessories for the
aforementioned products, included in this class; all
mentioned products of Swiss provenance.
Machines, namely punching machines and feed units (strip and
gripper), including parts and accessories for the
aforementioned products, included in this class; all
mentioned products of Swiss provenance.
The invention relates to a spring-damper element (2) for mounting a punch press (1), comprising a hydraulic damper unit (3) having a first fluid chamber (4) and a second fluid chamber (5), wherein, in intended operation, a hydraulic fluid is displaced from the first fluid chamber (4) via a throttle point (6) into the second fluid chamber (5) when the spring-damper element (2) is compressed. The damper unit further has an overload valve (7) arranged between the first fluid chamber (4) and the second fluid chamber (5), which overload valve opens when a specific fluid pressure is reached in the first fluid chamber (4) or when a specific pressure differential between the first fluid chamber (4) and the second fluid chamber (5) is reached and releases a bypass (8), via which hydraulic fluid, circumventing the throttle point (6), then flows from the first fluid chamber (4) into the second fluid chamber (5). The spring-damper element (2) is designed such that the fluid pressure or the pressure differential at which the overload valve opens (7) can be adjusted when the spring-damper element (2) is installed as intended. Using spring-damper elements of the kind according to the invention, it is possible to create a mount for a punch press, the damping characteristics of which can be modified without significant effort and therefore the press can be operated variably in wide ranges with minimal floor loading in each case.
F16F 15/02 - Suppression des vibrations dans les systèmes non rotatifs, p. ex. dans des systèmes alternatifsSuppression des vibrations dans les systèmes rotatifs par l'utilisation d'organes ne se déplaçant pas avec le système rotatif
B30B 15/00 - Parties constitutives des presses ou accessoires de pressesMesures auxiliaires prises en rapport avec le pressage
F16F 15/023 - Suppression des vibrations dans les systèmes non rotatifs, p. ex. dans des systèmes alternatifsSuppression des vibrations dans les systèmes rotatifs par l'utilisation d'organes ne se déplaçant pas avec le système rotatif utilisant des moyens fluides
F16F 15/027 - Suppression des vibrations dans les systèmes non rotatifs, p. ex. dans des systèmes alternatifsSuppression des vibrations dans les systèmes rotatifs par l'utilisation d'organes ne se déplaçant pas avec le système rotatif utilisant des moyens fluides comprenant des dispositifs de commande
The invention relates to a press for stamping and/or forming, having a crank drive or eccentric drive for converting a rotary movement of a crankshaft or eccentric shaft (1) of the press into a linear stamping and/or forming movement of a stamping and/or forming tool (2, 9) accommodated in the press. The press has a drive motor (3) for driving the crankshaft or eccentric shaft (1) of the press, said drive motor (3) being connected or connectable to the crankshaft or eccentric shaft (1) via a separable coupling (4, 5, 6) and a planetary reduction gear (7), wherein the planet carrier (8) of the planetary reduction gear (7) is formed by the crankshaft or eccentric shaft (1). As a result of this structure, forming and/or stamping presses are possible in which very large torques can be transmitted from the planetary reduction gear (7) to the crankshaft or eccentric shaft (1) of the press in a safe, easy and space-saving manner.
B30B 1/26 - Presses, utilisant un élément pilonnant, caractérisées par le mode d'entraînement du pilon, la pression étant transmise au pilon ou à la platine de presse directement ou uniquement par l'intermédiaire d'organes travaillant en simple poussée ou traction par des cames, des excentriques ou des vilebrequins
21.
Gear train unit and arrangement for a stamping press
The invention relates to a gear train unit, comprising a plurality of planetary gear train stages, which are connected one after the other and which each comprise a ring gear, a sun gear, and a plurality of planet gears supported on a planet carrier, wherein the sun gear of each following planetary gear train stage is formed by the planet carrier of the preceding planetary gear train stage. The gear train unit comprises a driving element, which forms the sun gear of the first planetary gear train stage, and an output element, which forms the planet carrier of the last of the gear planetary gear train stages connected one after the other. The driving element is supported by means of first bearings arranged in the region of ends of the driving element, in such a way that the driving element can rotate about a longitudinal axis of the driving element, and at least some of the planet carriers of the planetary gear train stages are supported on the driving element in the region between the first bearings by means of bearings. The invention makes it possible to provide a gear train unit having a plurality of planetary gear train stages connected one after the other that is economical, extremely robust, and very compact and that additionally can transmit very high power.
F16H 3/64 - Transmissions ayant au moins trois engrenages centraux composées d'un certain nombre de trains d'engrenages, l'entraînement traversant toujours tous les trains et chaque train n'ayant pas plus d'une connexion pour entraîner un autre train
B30B 1/26 - Presses, utilisant un élément pilonnant, caractérisées par le mode d'entraînement du pilon, la pression étant transmise au pilon ou à la platine de presse directement ou uniquement par l'intermédiaire d'organes travaillant en simple poussée ou traction par des cames, des excentriques ou des vilebrequins
F16H 37/02 - Combinaisons de transmissions mécaniques non prévues dans les groupes comportant essentiellement et uniquement des transmissions à engrenages ou à friction
The invention relates to a stamping press arrangement comprising a plurality of first stamping press units (4a, 4b, 4c) arranged adjacent to one another, which have working directions (B) extending parallel in relation to each other in a common plane, and comprising a second stamping press unit (8), the working direction (A) of which extends perpendicularly in relation to the working directions (B) of the first stamping press units (4a, 4b, 4c), such that material processed in said stamping press unit (8) can be guided in the direct extension of the working direction (A) thereof into the working regions of the first stamping press units (4a, 4b, 4c). The stamping press units (4a, 4b, 4c, 8) each have a crankshaft portion or eccentric shaft portion (28a, 28b, 28c, 30), by means of which the travel movement of the press ram (1a, 1b, 1c, 5) is effected via a connecting rod (29a, 29b, 29c, 31a, 31b). The crankshaft portion or eccentric shaft portion (28a, 28b, 28c, 30) of the first stamping press units (4a, 4b, 4c) are driven forcibly together via a common drive unit (24, 25, 26) with the same speed and comprise a common axis of rotation (R1). The crankshaft portion or eccentric shaft portion (30) of the stamping press unit (8) is coupled to the crankshaft portion or eccentric shaft portion (28a, 28b, 28c) of the first stamping press units (4a, 4b, 4c) so as to forcibly rotate therewith in a synchronous manner. The invention allows high-precision and high-speed stamping press arrangements to be provided for economically mass-producing multi-part stamping and shaped and punched products which have low tolerances, such as container lids with press-in or pull tabs (EOEs) for opening without tools, in a cost-effective manner.
B21D 51/38 - Fabrication des dispositifs pour remplir ou vider les boîtes de conserve, bidons, cuvettes, bouteilles ou autres récipientsFabrication des fonds des boîtes de conserveFabrication des dispositifs de fermeture
23.
GEAR TRAIN UNIT AND ARRANGEMENT FOR A STAMPING PRESS
The invention relates to gear train unit, comprising a plurality of planetary gear train stages, which are connected one after the other and which each comprise a ring gear, a sun gear (2a, 21, 21a), and a plurality of planet gears (3, 3a, 3b) supported on a planet carrier (5, 5a, 6), wherein the sun gear (2a, 21, 21a) of each following planetary gear train stage is formed by the planet carrier (5, 5a) of the preceding planetary gear train stage. The gear train unit comprises a driving element (2), which forms the sun gear (2a) of the first planetary gear train stage, and an output element (6, 17), which forms the planet carrier (6) of the last of the planetary gear train stages connected one after the other. The driving element (2) is supported by means of first bearings (9a, 24) arranged in the region of ends of the driving element, in such a way that the driving element can rotate about a longitudinal axis of the driving element, and at least some of the planet carriers (5a, 5b, 6) of the planetary gear train stages are supported on the driving element (2) in the region between the first bearings (9a, 24) by means of bearings (19, 20). The invention makes it possible to provide a gear train unit having a plurality of planetary gear train stages connected one after the other that is economical, extremely robust, and very compact and that additionally can transmit very high power.
B30B 1/26 - Presses, utilisant un élément pilonnant, caractérisées par le mode d'entraînement du pilon, la pression étant transmise au pilon ou à la platine de presse directement ou uniquement par l'intermédiaire d'organes travaillant en simple poussée ou traction par des cames, des excentriques ou des vilebrequins
F16H 3/66 - Transmissions ayant au moins trois engrenages centraux composées d'un certain nombre de trains d'engrenage, sans entraînement passant d'un train à l'autre
24.
METHOD FOR WARPING THE MACHINE BED AND/OR THE PRESS RAM OF A PUNCHING PRESS AND PUNCHING PRESS
The invention relates to a method for warping the machine bed (5) and/or the press ram (2) of a punching press to compensate at least partially for the bending of the machine bed (5) or of the press ram (2) caused by the punching force during punching operation. According to the invention, for this purpose a temperature gradient is specifically produced within the machine bed (5) and/or within the press ram (2), with the effect of making the machine bed (5) warp in the direction of the press ram (2) and/or of making the press ram (2) warp in the direction of the machine bed (5). In this way it is possible with very little expenditure on plant or equipment to preform machine beds (5) and press rams (2) of punching presses to compensate for instances of bending caused by the punching force, without having to deviate from existing, tried-and-tested structural concepts. Moreover, the method according to the invention can also be used in the case of existing presses.
The invention relates to a method for bending the machine bed (5) of a stamping press, which machine bed has an opening (6b) for leading away stamped parts and waste, in order to at least partially compensate a deflection of the machine bed (5) caused by stamping force during stamping operation. Forces acting perpendicularly to the stamping force direction are applied to the machine bed (5) and/or forces acting perpendicularly to the stamping force direction are produced in the machine bed (5), by means of which forces the machine bed (5) bends in a direction toward the press ram (2) in such a way that the machine bed is more greatly bent in the region adjacent to the opening (6b) than in the regions adjacent to the longitudinal sides of the machine bed. By means of the method according to the invention, machine beds (5) of stamping presses having openings can be spatially pre-deformed with very minimal system complexity for the purpose of at least partially compensating deflections caused by stamping force.
a) of the first planetary gear train stage, and an output element (17), which is connected in a torsionally rigid manner to the planet gear carrier (6) of the last planetary gear train stage. The gear train unit can be shifted in such a way that either a first or a second gear ratio can be set.
F16H 3/44 - Transmissions à engrenages pour transmettre un mouvement rotatif à rapport de vitesse variable ou pour inverser le mouvement rotatif utilisant des engrenages à mouvement orbital
27.
GEAR TRAIN UNIT AND ARRANGEMENT FOR A STAMPING PRESS
The invention relates to a gear train unit, comprising a plurality of planetary gear train stages, which are connected one after the other and which each comprise a ring gear (4, 4a, 4b), a sun gear (2a, 21, 21a), and a plurality of planet gears (3, 3a, 3b) supported on a planet carrier (5, 5a, 6), wherein the sun gear (2a, 21, 21a) of each following planetary gear train stage is formed by the planet carrier (5, 5a) of the preceding planetary gear train stage. The gear train unit comprises a drive element (2), which forms the sun gear (2a) of the first planetary gear train stage. At least some of the planet carriers (5a, 5b, 6) are supported on the drive element (2). The gear train unit also comprises an output element (17), which is connected in a torsionally rigid manner to the planet carrier (6) of the last planetary gear train stage. The gear train unit can be shifted in such a way that either a first or a second gear ratio can be set.
F16H 3/64 - Transmissions ayant au moins trois engrenages centraux composées d'un certain nombre de trains d'engrenages, l'entraînement traversant toujours tous les trains et chaque train n'ayant pas plus d'une connexion pour entraîner un autre train
B30B 1/26 - Presses, utilisant un élément pilonnant, caractérisées par le mode d'entraînement du pilon, la pression étant transmise au pilon ou à la platine de presse directement ou uniquement par l'intermédiaire d'organes travaillant en simple poussée ou traction par des cames, des excentriques ou des vilebrequins
The invention relates to a punching press with a clamping plate (27) and with a press ram (1) which lies opposite the upper side of the clamping plate (27) and operates towards the clamping plate (27) and is moveable up and down via four tension columns (2) by means of a crank drive arranged below the belt movement plane (X) of the punching press. The press ram (1) is guided exclusively via the tension columns (2) which, in turn, are guided in inclination-tolerant guides (3) in the belt movement plane (X) in such a manner that the press ram (1) and the tension columns (2) can be positioned obliquely as a consequence of differing longitudinal expansion of the tension columns (2) under an eccentric load by the tension columns (2) being inclined about axes of inclination running in the region of the belt movement plane (X) of the punching press. By means of the configuration according to the invention, distortion of the punching press under an eccentric load, which would lead to uncontrollable operating conditions during the punching and a high degree of wear at the guides of the machine, is avoided, and it can be ensured that, in the event of a possible skewed position of the ram, no tool offset, which would result in a high degree of tool wear or even in tool fracture, occurs.
B30B 1/06 - Presses, utilisant un élément pilonnant, caractérisées par le mode d'entraînement du pilon, la pression étant transmise au pilon ou à la platine de presse directement ou uniquement par l'intermédiaire d'organes travaillant en simple poussée ou traction par un mécanisme à levier actionné par des cames, des excentriques ou des vilebrequins
B30B 1/28 - Presses, utilisant un élément pilonnant, caractérisées par le mode d'entraînement du pilon, la pression étant transmise au pilon ou à la platine de presse directement ou uniquement par l'intermédiaire d'organes travaillant en simple poussée ou traction par des cames, des excentriques ou des vilebrequins la came, le vilebrequin ou l'excentrique étant disposé au-dessous de la platine ou de la table inférieure et fonctionnant de façon à abaisser la glissière ou la platine supérieure
Machines, namely punching machines and feed units (strip and
gripper), including parts and accessories for the
aforementioned products, included in this class.
