Vice for retaining metal bodies which comprises: two opposite primary jaws (3), each of which provided with a first operating surface (4) susceptible of coming into contact with a metal body to be retained (O), and is actuatable closer to or further away from the opposite primary jaw (3); at least one secondary jaw (6) for each primary jaw (3), which is provided with a second operating surface (7) and is movable closer to or further away from the opposite secondary jaw (6). The first operating surface (4) of the primary jaws (3) defines a step-like seat delimited by a base surface (8), susceptible of receiving the metal body (O) in abutment, and by a lateral surface (9), susceptible of coming into contact with the metal body (O). The second operating surface (7) of the secondary jaws (6) is provided with a clamping tooth (12) adapted to come into abutment against the metal body (O).
09 - Appareils et instruments scientifiques et électriques
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Ties of metal for binding; mobile pallets made of metal;
retaining [fixing] devices of metal, namely, beams, clamps,
collets of metal, other than parts of machines, plugs of
metal; metal centring clamps for industrial equipment; pegs
of metal; screws of metal; metal mouldings; support plates
made of metal for moulds; clamping plates made of metal for
supporting moulds; clamps and securing devices made of metal
used for supporting metal moulds. Die-stamping machines and parts of moulds (parts of
machines); die-stamping machines for the manufacture of
plastic goods; spindles (parts of machines); floating chucks
(parts of machines); self-centring chucks [parts of
machines]; machines for moving workpieces and utensils;
numerically controlled machine tools; robots; mould
switching machines; pneumatic automation devices (parts of
machines); machines, tools and apparatus for fastening and
joining; automated tool warehouses; shuttles (parts of
machines) for transporting pallets; modular tombstones
(parts of machines); pallet changing systems for use with
machine tools; clamping devices being parts of machine
tools; centring devices being parts of machine tools;
clamping tools for holding piece parts during machining;
mould bases for use with machines; bushings being parts of
machines; journals [parts of machines]; automatic handling
machines; tool bits for machines; palletisation machines;
gripping devices being parts of machines; clamps [parts of
machines]; self-centring vices (parts of machines);
precision modular vices (parts of machines); spray guns for
paints; metal bearings. Hand tools and implements (hand-operated); expanders (hand
tools); quick change chucks; floating chucks; self-centring
chucks; clamps for carpenters or coopers; locking clamps
[hand tools]; vices; self-centring vices; precision modular
vices; strippers; mechanical pincers; drill bits for use in
hand tools; chucks for hand-operated tools. Software for controlling manufacturing processes; software
systems for EDM presetting; load cells; programming software
for manufacture; industrial controls incorporating software;
software for managing and controlling a production function
(MES); checking (supervision) apparatus and instruments;
CAD/CAM control software. Engineering design and consultancy; engineering consultancy
relating to manufacture; technological consultancy in
relation to industrial automation; technological consultancy
in relation to the management of production processes.
09 - Appareils et instruments scientifiques et électriques
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Ties of metal for binding; mobile pallets made of metal; retaining devices of metal, namely, beams, clamps, collets of metal, other than parts of machines, plugs of metal; metal centring clamps for industrial equipment; pegs of metal; screws of metal; metallic moulds for metal casting and for plastic injection; support plates made of metal for moulds; clamping plates made of metal for supporting moulds; clamps and securing devices made of metal, namely, metal clamps used for supporting metal moulds Die-stamping machines and moulds being parts of die-stamping machines; die-stamping machines for the manufacture of plastic goods; spindles being parts of machines; floating chucks being parts of machines; self-centring chucks being parts of machines; numerically controlled machines for moving workpieces and utensils; numerically controlled machine tools used for machining parts; industrial robots; mould switching machines; pneumatic automation devices, namely, pneumatic linear actuators being parts of machines; automated tool warehouse machine for providing the selected tool to a numerically controlled machine; shuttles being parts of machines for transporting pallets; modular tombstones being parts of machines; pallet changing systems for use with machine tools, namely, machines provided with actuators intended to move pallets; clamping devices being parts of machine tools, namely, clamps for use in the precision clamping of work pieces; centering devices being parts of machine tools, namely, bearings as parts of machines; machine tools, namely, clamping tools for holding piece parts during machining; mould bases, namely, forging moulds for use with machines; bushings being parts of machines journal boxes being parts of machines; automatic handling machines, namely, machines provided with actuators intended to move support bases which are used during machining operations; tool bits for machines; palletisation machines, namely, palletizers; gripping devices being parts of machines, namely, compressed air machine components, namely, air grips; clamps being parts of machines, namely, machine tools, namely, vises for use in the precision clamping of work pieces; self-centering vices being parts of machines; precision modular vices being parts of machines; spray guns for paints; metal bearings for machines and machine tools for moving work pieces and machining parts Hand tools and hand-operated implements, namely, expanders, quick change chucks, floating chucks, self-centring chucks, clamps for carpenters or coopers, locking clamps, vices, self-centring vices, precision modular vices, wire strippers; hand tools, namely, pincers; drill bits for use in hand tools; chucks for hand-operated tools Downloadable software for controlling factory manufacturing processes; downloadable computer software for use in the operation of computer hardware manufacturing machines; industrial automation controls incorporating downloadable software for use in operating the controls; downloadable software for use in managing and controlling a production function to track and document the transformation of raw materials to finished goods; CAD/CAM downloadable control software for controlling machines and machine tools in the manufacturing of work pieces Engineering design and consultancy; engineering consultancy for workholding setup for numerically controlled machines and designing flexible manufacturing cells; technological consultancy in relation to industrial automation, namely, technological consultancy in the design of industrial automation controls technological consultancy in relation to the management of industrial production processes in the field of manufacturing machines and methods
09 - Appareils et instruments scientifiques et électriques
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
(1) Ties of metal for binding; mobile pallets made of metal; retaining devices of metal, namely, beams, clamps, collets of metal, other than parts of machines, plugs of metal; metal centring clamps for industrial equipment; pegs of metal; screws of metal; metallic moulds for injection moulding; clamping plates made of metal for supporting moulds; clamps and securing devices made of metal, namely, metal clamps used for supporting metal moulds
(2) Die-stamping machines and moulds being parts of die-stamping machines; metal support plates for moulds being parts of machines; die-stamping machines for the manufacture of plastic goods; spindles being parts of machines; floating chucks being parts of machines; self-centring chucks being parts of machines; numerically controlled machines for moving workpieces and utensils; numerically controlled machine tools used for machining parts; industrial robots; mould switching machines; pneumatic automation devices, namely, pneumatic linear actuators being parts of machines; metal joining machines for metalworking; numerically controlled metalworking machine equipped with an automated machine tool warehouse for providing the selected tool to another numerically controlled metalworking machine (CNC machine); shuttles being parts of machines for transporting pallets; modular tombstones being parts of machines; pallet changing systems for use with machine tools, namely, machines provided with actuators intended to move pallets; clamping devices being parts of machine tools, namely, clamps for use in the precision clamping of work pieces; centring devices being parts of machine tools, namely, bearings as parts of machines; clamping tools for holding piece parts during machining; mould bases, namely, forging moulds for use with machines; bushings for use as parts of machines; automatic handling machines, namely, machines provided with actuators intended to move support bases which are used during machining operations; tool bits for machines; palletisation machines, namely, palletizers; gripping devices being parts of machines, namely, compressed air machine components, namely, air grips; clamps being parts of machines, namely, machine tools, namely, vises for use in the precision clamping of work pieces; self-centring vices being parts of machines; precision modular vices being parts of machines; metal machine bearings
(3) Hand tools and hand-operated implements, namely, expanders, quick change chucks, floating chucks, self-centring chucks, clamps for carpenters or coopers, locking clamps, vices, self-centring vices, precision modular vices, wire strippers
(4) Computer software for controlling factory manufacturing processes; load cells; computer software for use in the operation of computer hardware manufacturing machines; industrial automation controls incorporating computer software for controlling machines and machine tools in the manufacturing of work pieces; computer software for use in managing and controlling a production function to track and document the transformation of raw materials to finished goods (MES); CAD/CAM control computer software for controlling machines and machine tools in the manufacturing of work pieces (1) Engineering design and consultancy in the field of manufacturing machines; engineering consultancy relating to workholding setup for numerically controlled machines (CNC machines) manufacturing and designing flexible manufacturing cells; technological consultancy in relation to industrial automation, namely, technological consultancy in the design of industrial automation controls; technological consultancy in relation to the management of industrial production processes in the field of manufacturing machines and methods
09 - Appareils et instruments scientifiques et électriques
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Ties of metal for binding; Mobile pallets made of metal; Retaining [fixing] devices of metal; Metal centring devices; Fixing devices of metal; Metal bearings; studs made of metal; Screws of metal; Metal mouldings. Die-stamping machines and parts of moulds (parts of machines); Support plates for moulds; Clamping plates for supporting moulds; Die-stamping machines for the manufacture of plastic goods; Spindles (parts of machines); Floating chucks (parts of machines); Self-centring chucks [parts of machines]; Clamps and securing systems for supporting metal moulds; Machines for moving workpieces and utensils; Numerically controlled machine tools; Robots; Quick mould change systems; Pneumatic automation devices (parts of machines); Machines, tools and apparatus for fastening and joining; Automated tool warehouses; Shuttles (parts of machines) for transporting pallets; Modular tombstones (parts of machines); Pallet changing systems for machine tools; Clamping devices being parts of machine tools; Centring devices being parts of machine tools; Clamping tools for holding piece parts during machining; Mould bases for use with machines; Bushings being parts of machines; Journals [parts of machines]; Automatic handling machines; Tool bits for machines; Palletisation machines; Gripping devices being parts of machines; Clamps [parts of machines]; Self-centring vices (parts of machines); Precision modular vices (parts of machines); Spray guns for paints. Hand tools and implements (hand-operated); Expanders (hand tools); Quick change chucks; Floating chucks; Self-centring chucks; Clamps for carpenters or coopers; Locking clamps [hand tools]; Vices; Self-centring vices; Precision modular vices; Strippers; Mechanical pincers; Drill bits for use in hand tools. Software for controlling manufacturing processes; Software systems for EDM presetting; Load cells; Programming software for manufacture; Industrial controls incorporating software; Software for managing and controlling a production function (MES); Checking (supervision) apparatus and instruments; CAD/CAM control software. Engineering design and consultancy; Engineering consultancy relating to manufacture; Technical consultancy in relation to industrial automation; Technical consultancy in relation to the management of production processes.
An interface structure that is constituted by a first, U-shaped toothed pivot, which can be associated in an upper region, by way of a jaw connection, with a fixing element with the interposition of a first bush for centering. The first toothed pivot is rendered axially integral in a lower region with a fastening element that can be associated with an underlying device for compensating the misalignment in automatic locking systems for the mounting of blanks.
B23Q 3/00 - Dispositifs permettant de maintenir, supporter ou positionner les pièces ou les outils, ces dispositifs pouvant normalement être démontés de la machine
B23Q 1/00 - Éléments composant la structure générale d'un type de machine, et plus spécialement gros éléments fixes
B23Q 3/10 - Dispositifs auxiliaires, p. ex. collets, allonges
7.
Device for compensating offset in automatic locking systems
A device for compensating the offset in automatic locking systems for the mounting of blanks comprising a box-like body composed of a T-shaped hollow body and a U-shaped base, which form an inner seat for a frustum-shaped jacket, which is arranged coaxially to the shank of the hollow body and above a piston, which can move transversely to the shank, a traction element being slideably arrangeable in the shank of the hollow body, the traction element cooperating selectively with balls which can be accommodated within openings provided in the shank and within second seats provided on the jacket, elastically compressible elements being arranged between the head of the hollow body and the jacket.
F16B 21/07 - Dispositifs de fixation largables à action rapide dans lesquels la douille a une partie élastique
B23Q 1/00 - Éléments composant la structure générale d'un type de machine, et plus spécialement gros éléments fixes
B23B 31/107 - Caractérisés par les dispositifs de maintien ou de serrage ou par leurs moyens d'action directe le maintien étant assuré par des éléments d'arrêt agissant latéralement, p. ex. doigts, écrous, clavettesCaractérisés par les dispositifs de maintien ou de serrage ou par leurs moyens d'action directe le maintien étant assuré par éléments mobiles, p. ex. des billes
B23Q 3/18 - Dispositifs permettant de maintenir, supporter ou positionner les pièces ou les outils, ces dispositifs pouvant normalement être démontés de la machine pour positionner uniquement
Electric spindle for numerical control machines structured to lock and rotationally drive a tool about a predetermined reference axis locally coinciding with the longitudinal axis of the tool; the electric spindle comprising: an outer structural casing that is structured to be rigidly attachable to a generic numerical control machine; an electric motor that is housed within the structural casing and is provided with a drive shaft, which projects/emerges with its front end outside the structural casing while remaining locally coaxial to the reference axis of the electric spindle; a rotating thrust-bearing bushing or sleeve, which is fitted in an axially rotatable manner on the front end of the drive shaft via interposition of a first set of annular rolling bearings, and is maintained coaxial to the reference axis of the electric spindle by a second set of annular rolling bearings, which are interposed between the rotating bushing or sleeve and the structural casing; and at least one disassemblable tool-holder head that is structured to be attachable, in a rigid and stable though easily releasable manner, to the front end of the drive shaft, is structured so as to accommodate and retain, in a rigid and stable though easily releasable manner, the shank of a generic tool for numerical control machines, and is provided with a peripheral crown that is dimensioned/structured to stably abut, selectively and alternatively, on the front end of the drive shaft or on the rotating thrust-bearing bushing or sleeve.
B23B 31/26 - Mandrins de serrage caractérisés par le système de commande à distance des moyens de serrage utilisant des transmissions mécaniques dans la broche de travail
B23Q 1/70 - Éléments fixes ou mobiles supportant des broches de travail pour fixer des outils ou des pièces
B23Q 5/04 - Entraînement des principaux organes de travail des arbres rotatifs, p. ex. des broches de travail
B23C 1/02 - Machines à fraiser non conçues pour des pièces particulières ou des opérations spéciales avec une broche de travail horizontale
B23Q 5/10 - Entraînement des principaux organes de travail des arbres rotatifs, p. ex. des broches de travail entraînés principalement par des moyens électriques
B23Q 3/12 - Dispositifs permettant de maintenir, supporter ou positionner les pièces ou les outils, ces dispositifs pouvant normalement être démontés de la machine destinés à être fixés à une broche en général
B23Q 5/00 - Mécanismes d'entraînement ou d'avanceAgencement des commandes à cet effet
Machine tools, namely, clamps for use in the precision clamping of work pieces; [ Chucks for power moulding machines; Industrial robots and digital controls therefor sold as a unit; Moulding machines for use in manufacturing plastic materials; ] Clamping machines; Workpiece clamping attachments as machines; Workpiece clamping attachments as parts of machines; Clamping devices being parts of machine tools; Pallet changing devices for machines tools Hand tools, namely, chucks for hand-operated tools, screw clamps, clamps and clamping wedges
Electric spindle (1) for numerical control machines structured to lock and rotationally drive a tool (100) about a predetermined reference axis (A) locally coinciding with the longitudinal axis of the tool (2); the electric spindle (1) comprising: an outer structural casing (2) that is structured to be rigidly attachable to a generic numerical control machine; an electric motor (3) that is housed within the structural casing (2) and is provided with a drive shaft (4), which projects/emerges with its front end (4a) outside the structural casing (2) while remaining locally coaxial to the reference axis (A) of the electric spindle; a rotating thrust- bearing bushing or sleeve (11), which is fitted in an axially rotatable manner on the front end (4a) of the drive shaft (4) via interposition of a first set of annular rolling bearings (12), and is maintained coaxial to the reference axis (A) of the electric spindle by a second set of annular rolling bearings (13), which are interposed between the rotating bushing or sleeve (11) and the structural casing (2); and at least one disassemblable tool-holder head (5, 5') that is structured to be attachable, in a rigid and stable though easily releasable manner, to the front end (4a) of the drive shaft (4), is structured so as to accommodate and retain, in a rigid and stable though easily releasable manner, the shank (101) of a generic tool (100) for numerical control machines, and is provided with a peripheral crown (14) that is dimensioned/structured to stably abut, selectively and alternatively, on the front end (4a) of the drive shaft (4) or on the rotating thrust-bearing bushing or sleeve (11).
Electric spindle (1) for numerical control machines structured to lock and rotationally drive a tool (100) about a predetermined reference axis (A) locally coinciding with the longitudinal axis of the tool (2); the electric spindle (1) comprising: an outer structural casing (2) that is structured to be rigidly attachable to a generic numerical control machine; an electric motor (3) that is housed within the structural casing (2) and is provided with a drive shaft (4), which projects/emerges with its front end (4a) outside the structural casing (2) while remaining locally coaxial to the reference axis (A) of the electric spindle; a rotating thrust- bearing bushing or sleeve (11), which is fitted in an axially rotatable manner on the front end (4a) of the drive shaft (4) via interposition of a first set of annular rolling bearings (12), and is maintained coaxial to the reference axis (A) of the electric spindle by a second set of annular rolling bearings (13), which are interposed between the rotating bushing or sleeve (11) and the structural casing (2); and at least one disassemblable tool-holder head (5, 5') that is structured to be attachable, in a rigid and stable though easily releasable manner, to the front end (4a) of the drive shaft (4), is structured so as to accommodate and retain, in a rigid and stable though easily releasable manner, the shank (101) of a generic tool (100) for numerical control machines, and is provided with a peripheral crown (14) that is dimensioned/structured to stably abut, selectively and alternatively, on the front end (4a) of the drive shaft (4) or on the rotating thrust-bearing bushing or sleeve (11).
A modular structure, particularly for supporting blanks, which comprises at least one flat plate which has a plurality of seats which can be integrally and removably associated with at least one portion of a blank to be worked on by way of fixing elements, which comprise a fixing element that has at least one lower portion which can be faced towards the plate and which is provided with at least one pin which can be engaged, respectively, with a seat of the plate, and can be inserted along its axis in a cavity defined by a lower portion through a hole with a substantially elongated shape along a predefined direction and is substantially perpendicular with respect to the axis of the pin.
B23Q 3/00 - Dispositifs permettant de maintenir, supporter ou positionner les pièces ou les outils, ces dispositifs pouvant normalement être démontés de la machine
B23Q 3/10 - Dispositifs auxiliaires, p. ex. collets, allonges
13.
Locking device for mechanical pieces, particularly for piece subjected to mechanical processing or similar
A locking device for mechanical pieces, particularly for pieces subjected to mechanical processing or similar, comprising at least one hollow body that forms a sliding seat, a movable stem that is accommodated slidingly partially within the sliding seat of the hollow body and radial expansion elements which are interposed between the hollow body and the movable stem, the radial expansion elements being adapted to mutually lock the hollow body and the movable stem, the movable stem protruding partially from the hollow body with the hollow body and the movable stem jointly associable, at their free ends, by way of elements for connection, respectively, to a mechanical piece to be processed or a fixed part of a machine with which the mechanical piece is to be processed.
F16B 7/14 - Systèmes télescopiques verrouillés dans des positions intermédiaires
B23Q 3/10 - Dispositifs auxiliaires, p. ex. collets, allonges
B25B 11/00 - Porte-pièces ou dispositifs de mise en position non couverts par l'un des groupes , p. ex. porte-pièces magnétiques, porte-pièces utilisant le vide
A modular structure (1), particularly for supporting blanks, which comprises at least one flat plate (2) which has a plurality of seats (3) which can be integrally and removably associated with at least one portion (7, 52, 53) of a blank (50, 51) to be worked on by way of fixing means (9). In more detail, the fixing means (9) comprise at least one fixing element (10, 11) which can be interposed between the plate (2) and the blank (50, 51) and has at least one upper portion (10a, 11a) which can be faced towards at least one among the plate (2) and the blank (50, 51). The upper portion (10a, 11a) is moreover provided with at least one first pin (12) which can be associated, respectively, with a seat (3) or with the portion (7, 52, 53) and can be inserted along its axis (12a) in a first cavity (13) defined by the upper portion (10a, 11a) through a first circular hole (14) defined on the surface of the upper portion (10a, 11a) which can be faced in the direction, respectively, of the plate (2) or of the blank (50, 51) for the radial locking in place of the first pin (12) relative to the upper portion (10a, 11a). The first cavity (13) accommodates a pair of first jaws (16) which can be engaged with the first pin (12) for its axial locking in place relative to the upper portion (10a, 11a). The distinctive characteristic of the invention consists in the fact that the fixing element (11) has at least one lower portion (11b) which can be faced towards the plate (2) and which is provided with at least one second pin (23) which can be engaged, respectively, with a seat (3) of the plate (2), and can be inserted along its axis (23a) in a second cavity (24) defined by the lower portion (11b) through a second hole (25) with a substantially elongated shape along a predefined direction (26) and is substantially perpendicular with respect to the axis (23a) of the second pin (23). In more detail, the second hole (25) is defined on the surface of the lower portion (11b) which can be faced in the direction of the plate (2) for the locking in place of the second pin (23) relative to the lower portion (11b) along a radial direction of the second pin (23) which is substantially perpendicular to the predefined direction (26). Moreover, the second cavity (24) accommodates a pair of second jaws (27) which can be engaged with the second pin (23) for its axial locking in place relative to the lower portion (11b) and which are movable in the second cavity (24) along a direction which is substantially parallel to the predefined direction (26).
The present invention refers to a locking device (1) for mechanical pieces, particularly for pieces subjected to mechanical processing or similar, the particularity of which resides in that it comprises at least one hollow body (2) that forms a sliding seat (3), a movable stem (4) that is accommodated slidingly partially within the sliding seat (3) of the hollow body (2) and radial expansion means (5) which are interposed between the hollow body (2) and the movable stem (4). In greater detail, the radial expansion means (5) are adapted to mutually lock the hollow body (2) and the movable stem (4). Further, the movable stem (4) protrudes partially from the hollow body (2) with the hollow body (2) and the movable stem (4) jointly associable, at their free ends (2a, 4a), by way of means (20) for connection, respectively, to a mechanical piece (16) to be processed or a fixed part (17) of a machine with which the mechanical piece (16) is to be processed.
B25B 11/00 - Porte-pièces ou dispositifs de mise en position non couverts par l'un des groupes , p. ex. porte-pièces magnétiques, porte-pièces utilisant le vide
A modular structure, particularly for supporting blanks and the like, which comprises at least one flat plate provided with a plurality of seats for interconnection between the plate and a blank or the like by means of at least one anchoring element, which comprises a first part, which can be associated detachably with the plate, and a second part, which is provided with first fixing means for the detachable connection of the anchoring element to a recess of the blank. The first fixing means comprise, in particular, fingers which can be inserted in the recess and protrude from the anchoring element along substantially one direction and can move transversely with respect to the direction for their engagement with the lateral surfaces of the recess.
B23B 31/107 - Caractérisés par les dispositifs de maintien ou de serrage ou par leurs moyens d'action directe le maintien étant assuré par des éléments d'arrêt agissant latéralement, p. ex. doigts, écrous, clavettesCaractérisés par les dispositifs de maintien ou de serrage ou par leurs moyens d'action directe le maintien étant assuré par éléments mobiles, p. ex. des billes
B23Q 3/10 - Dispositifs auxiliaires, p. ex. collets, allonges
Metal hooks and fasteners, metal screws, metal moulds
included in this class. Machines and machine tools, moulding machines, moulds (parts
of machines), moulding machines for use in manufacturing
plastic materials, moulding apparatus and systems, chucks
(parts of machines), metal clamps used for holding piece
parts on machine tool tables included in this class;
handling machines; digitally controlled machines; robots
(machines). Tools, hand-operated instruments, chucks (tools), screw
clamps, clamps (hand tools).
[ Machines and machine tools, namely, machines for shaping plastic, machines for extruding, injecting, moulding or laminating of plastic material or plastic product; injection plastic moulding machines, die-cutting machines, injection plastic moulding machines for automotive lighting, injection plastic moulding machines for automotive components and parts, moulding machines for use in injection moulding, extrusion moulding machines, compression moulding machines, moulds being parts of machines and machine tools, moulding machines for use in manufacturing plastic material; plastic moulding apparatus, namely, nozzles and manifolds as parts of moulding machines, ] chucks for machine tools, metal clamps used for holding piece parts on machine tool tables [ ; handling machines, namely, small part material handling machines for feeding plastic and metal work pieces into moulding machines; material handling machines for loading and unloading finished plastic and metal work pieces; digitally controlled metalworking machines; digitally controlled machine tools namely, digitally controlled machine tools for the cutting and forming of plastic and metal materials; robots, namely, industrial robots ] [ Hand tools and hand-operated instruments, namely, chucks for hand tools, hand tools in the nature of screw clamps and clamps for automotive industry and metalworking industry ]