Abstract

A machining center includes two independent carriages supported so that they can slide along respective longitudinal translation axes by two parallel horizontal rails fixed in a raised position to a supporting structure. The carriages support respective machining heads which can move along two respective translation axes. The machining heads support respective tool holding spindles in a rotatable manner about a horizontal rotation axis (Yr′, Yr″) by virtue of rotary support means. A workpiece holding table is supported at the base of the supporting structure. Two mechanized tool magazines are supported at the opposite longitudinal ends of the supporting structure and are accessible by the spindles. The rotary support and/or the workpiece holding table can rotate about a respective vertical axis.

IPC Classes  ?

• B23Q 1/62 - Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only two sliding pairs only with perpendicular axes, e.g. cross-slides
• B23Q 39/02 - Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station

Abstract

A machining center includes two independent carriages that are supported so that they can slide along respective longitudinal translation axes by a pair of parallel horizontal rails which are extended along a longitudinal direction and are fixed in a raised position to a supporting structure. Each one of the carriages supports a machining head which can move along a transverse translation axis and along a vertical translation axis by guiding components. Each of the machining heads supports a tool holding spindle so that it can rotate about a horizontal rotation axis by rotary support components. A workpiece holding table is supported at a base of the supporting structure so that it can rotate about a first rotation axis which is extended in a horizontal and longitudinal direction. Two mechanized tool magazines at the opposite longitudinal ends of the supporting structure are accessible by the spindles.

IPC Classes  ?

• B23Q 1/52 - Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only a single rotating pair
• B23Q 1/54 - Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only two rotating pairs only
• B23Q 11/08 - Protective coverings for parts of machine toolsSplash guards

Abstract

A machining center includes two independent carriages supported so that they can slide along respective longitudinal translation axes (X′, X″) by two parallel horizontal rails fixed in a raised position to a supporting structure. The carriages support respective machining heads which move along two respective translation axes (Y′, Y″, Z′, Z″). The machining heads support respective tool holding spindles arranged with a vertical axis. At least one workpiece holding table is supported at the base of the supporting structure in a rotatable manner about a first horizontal and transverse rotation axis (Yr′, Yr″) and about a second rotation axis (Hr′, Hr″) perpendicular to the first one. Two mechanized tool magazines are supported at the opposite longitudinal ends of the supporting structure and are accessible by the spindles.

IPC Classes  ?

• B23Q 3/157 - Arrangements for automatic insertion or removal of tools of rotary tools

Abstract

A machining center, comprising two independent carriages (14', 14'') that are supported so that they can slide along respective longitudinal translation axes (X', X'') by a pair of parallel horizontal rails (16a, 16b) which are extended along a longitudinal direction and are fixed in a raised position to a supporting structure (12). Each one of the carriages (14', 14'') supports a machining head (22', 22'') which can move along a transverse translation axis (Y', Y'') and along a vertical translation axis (Z', Z'') by means of guiding means (18', 18'', 20', 20'', 24', 24''). Each of the machining heads (22', 22'') supports a tool holding spindle (28', 28'') so that it can rotate about a horizontal rotation axis (Yr', Yr'') by means of rotary support means (26', 26''). A workpiece holding table (34) is supported at a base (30', 30'') of the supporting structure (12) so that it can rotate about a first rotation axis (Xr) which is extended in a horizontal and longitudinal direction. Two mechanized tool magazines (36', 36'') at the opposite longitudinal ends of the supporting structure (12) are accessible by the spindles (28', 28'').

IPC Classes  ?

• B23Q 1/01 - Frames, beds, pillars or like membersArrangement of ways
• B23Q 1/52 - Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only a single rotating pair
• B23Q 11/08 - Protective coverings for parts of machine toolsSplash guards
• B23Q 39/02 - Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station
• B23Q 3/155 - Arrangements for automatic insertion or removal of tools
• B23Q 3/157 - Arrangements for automatic insertion or removal of tools of rotary tools
• B23Q 1/54 - Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only two rotating pairs only

Abstract

A machining center, comprising two independent carriages (14', 14'') that are supported so that they can slide along respective longitudinal translation axes (X', X'') by two parallel horizontal rails (16a, 16b) which are fixed in a raised position to a supporting structure (12). The carriages (14', 14'') support respective machining heads (22', 22'') which can move along two respective translation axes (Y', Y'', Z', Z''). The machining heads (22', 22'') support respective tool holding spindles (28', 28'') in a rotatable manner about a horizontal rotation axis (Yr', Yr'') by virtue of rotary support means (26', 26''). A workpiece holding table (34) is supported at the base (30', 30'') of the supporting structure (12). Two mechanized tool magazines (36', 36'') are supported at the opposite longitudinal ends of the supporting structure (12) and are accessible by the spindles (28', 28''). The rotary support means (26', 26'') and/or the workpiece holding table (34) can rotate about a respective vertical axis.

IPC Classes  ?

• B23Q 1/01 - Frames, beds, pillars or like membersArrangement of ways
• B23Q 3/157 - Arrangements for automatic insertion or removal of tools of rotary tools
• B23Q 39/04 - Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being arranged to operate simultaneously at different stations, e.g. with an annular work-table moved in steps
• B23Q 1/62 - Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only two sliding pairs only with perpendicular axes, e.g. cross-slides

Abstract

A machining center comprising two independent carriages (14', 14'') supported so that they can slide along respective longitudinal translation axes (X', X'') by two parallel horizontal rails (16a, 16b) which are fixed in a raised position to a supporting structure (12). The carriages (14', 14'') support respective machining heads (22', 22'') which can move along two respective translation axes (Y', Y'', Z', Z''). The machining heads (22', 22'') support respective tool holding spindles (28', 28'') arranged with a vertical axis. At least one workpiece holding table (34', 34'') is supported at the base (30', 30'') of the supporting structure (12) in a rotatable manner about a first horizontal and transverse rotation axis (Yr', Yr'') and about a second rotation axis (Hr', Hr'') which is perpendicular to the first one. Two mechanized tool magazines (36', 36'') are supported at the opposite longitudinal ends of the supporting structure (12) and are accessible by the spindles (28', 28'').

IPC Classes  ?

• B23Q 1/01 - Frames, beds, pillars or like membersArrangement of ways
• B23Q 1/62 - Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only two sliding pairs only with perpendicular axes, e.g. cross-slides
• B23Q 3/157 - Arrangements for automatic insertion or removal of tools of rotary tools
• B23Q 39/04 - Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being arranged to operate simultaneously at different stations, e.g. with an annular work-table moved in steps

Abstract

In a machining center provided with a mechanized tool magazine (32) and with at least one movable tool-holding spindle (18, 20) capable of accessing the tool magazine (32), the tool is picked up from the tool-holding spindle (18, 20) and transferred to a tool replacement area (38) by means of a dedicated, automatic transfer device (34) that is independent of the tool magazine (32). After the replacement of the tool with a new tool in the transfer device (34), the new tool is returned to the tool-holding spindle (18, 20) by means of the transfer device (34).

IPC Classes  ?

• B23Q 3/155 - Arrangements for automatic insertion or removal of tools
• B23Q 3/157 - Arrangements for automatic insertion or removal of tools of rotary tools

Abstract

A workpiece-holding unit for installation on machining centers for connecting rods, comprising a crosspiece which is adapted to be rotatably supported about its axis in front of a machining head of the machining center and has internal, hydraulic longitudinal ducts which communicate with respective hydraulic outlets on the main faces of the crosspiece and are connected to hydraulic feed means. Several workpiece-holding tools are installable on the main faces of the crosspiece and are provided with positioning mechanisms and locking mechanisms for at least one connecting rod, which are hydraulically operated via respective hydraulic lines leading at positions aligned to said hydraulic outlets.

IPC Classes  ?

• B23Q 3/08 - Work-clamping means other than mechanically-actuated
• G11C 11/22 - Digital stores characterised by the use of particular electric or magnetic storage elementsStorage elements therefor using electric elements using ferroelectric elements
• B23Q 1/00 - Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
• B23Q 3/06 - Work-clamping means

Abstract

A sensor detects an axial position of a rod controlling a tool-gripping collet in a tool-holding spindle whenever a tool is picked during a working session. The current obtained rod position value is compared with previous rod position value, which has been obtained and stored during the previous tool-picking and, if their deviation is larger than a predetermined threshold, the collet closure is notified as defective. The rod position is obtained as an average of a plurality of closely spaced readings, which are taken after a predetermined delay from the collet closure.

IPC Classes  ?

• B23Q 3/157 - Arrangements for automatic insertion or removal of tools of rotary tools
• B23C 5/26 - Securing milling-cutters to the driving spindle

Abstract

A numerical control unit issues a sequence of instructions for causing a spindle of a cutter disk in a tool machine to perform successive straight displacements approximating a spiral of Archimedes, with a predetermined angle step from one point to the next, and issues one or more ADIS instructions for merging each of the straight displacements with the next. The spiral path is such that the cutter disk will progressively shave a chip of a predetermined thickness over several revolutions, until its cutting edge is near the intended groove bottom. The tool is then caused to follow a merging path leading to a final point lying on the intended groove bottom, and finally is caused to follow a full circular path coaxial to the bore starting from the final point.

IPC Classes  ?

• B23C 3/28 - Grooving workpieces
• B23C 3/34 - Milling grooves of other forms, e.g. circumferential
• B23Q 15/22 - Control or regulation of position of tool or workpiece

Abstract

A workpiece-gripping device for tool machines having a motorized chuck mounted on an operating head comprises a housing, a driving shaft journaled in the housing and provided with a shank engageable in the chuck, a locking member configured to engage a reaction member integral with the operating head when the shank engages the chuck, whereby the rotation of the device is prevented when the chuck is driven, and at least a pincer having jaws, of which at least one is movable and operatively connected via transmission means to said driving shaft for opening and closing.

IPC Classes  ?

• B23B 31/18 - Chucks with simultaneously-acting jaws, whether or not also individually adjustable pivotally movable in planes containing the axis of the chuck