Multiple tool

A multiple tool for a punch device, in particular a turret punch press, comprising a punching tool magazine with a guide body and a plurality of punching tools guided in the guide body and a driving mechanism mounted rotatably in relation to the punching tool magazine, the driving mechanism comprising a tool head, which is displaceable relative to the guide body in the direction of a tool longitudinal axis, and a driving shaft, which is attached to the tool head for driving an active punching tool, the tool head having a ram engagement portion with a positive fit profile, which is non-rotationally symmetric to the tool longitudinal axis, to transmit a rotational movement from a ram of the punch device to the tool head.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the priority of German Patent Application, Serial No. 10 2017 215 422.5, filed Sep. 9, 2017, pursuant to 35 U.S.C. 119(a)-(d), the content of which is incorporated herein by reference in its entirety as if fully set forth herein.

TECHNICAL FIELD

The invention relates to a multiple tool for a punch device, in particular for a turret punch press.

BACKGROUND

A multiple tool for a punch device is known from EP 2 596 878 A2. The multiple tool comprises a punching tool magazine with a guide body configured to guide a plurality of punching tools and a driving body connected to a driving head, the driving body being configured to drive an active punching tool. The multiple tool is connected to a selection drive of the punch device to select the active punching tool. The multiple tool further comprises a mechanical punch length inspection device.

A multiple tool configured to receive a plurality of thread cutters is known from WO 2016/023794 A1. The plurality of thread cutters are arranged in a thread cutter magazine. Selecting an active thread cutter is carried out by rotatably driving a tool head by means of an actuating ram. For this purpose, the tool head has a non-rotationally symmetric receiving groove.

Multiple tools of this type are further known from U.S. Pat. No. 8,881,571 B2, from DE 60 2005 002 676 T2, and from DE 44 11 121 C1.

SUMMARY

An object of the present invention is to expand the possibilities of using a multiple tool, in particular for non-driven base stations of a punch device, and to reduce its dimensions, in particular along a punching direction.

It was found according to the invention that a multiple tool with a ram engagement portion, which has a non-rotationally symmetric positive fit profile relative to the tool longitudinal axis, can be used particularly flexibly and can be manufactured with particularly compact dimensions. The ram engagement portion allows a rotational movement to be transmitted from the punch device, in particular from a ram of the punch device, to the tool head. Preferably, the ram engagement portion is configured as a blind hole extending in the punching direction. The ram is thus capable of transmitting a punching force to the tool head in the punching direction, and is easily removable from the ram engagement portion counter to the punching direction. The positive fit profile of the ram engagement portion can be configured as one side of a tongue/groove connection or of a pin connection or of a spur gearing. Preferably, the positive fit profile has at least one radial groove.

The multiple tool for the punch device comprises the punching tool magazine and the driving mechanism, which is mounted rotatably in relation to the punching tool magazine. The driving shaft attached to the tool head can be displaceable relative to the guide body of the punching tool magazine in the direction of the tool longitudinal axis. The active punching tool is drivable via the driving shaft. In order to drive the active punching tool, the driving shaft can have a driving foot the cross-section of which is configured such that the driving foot interacts only with the punching tool that is active at that time. The guide body can be provided with a respective stripper member for each punching tool. Advantageously, this results in that the active punching tool is displaceable relative to the guide body, and that a workpiece can be held by means of the stripper members when the active punching tool is restored to its initial position.

The active punching tool can be selected via the drive mechanism of the tool head. Advantageously, the driving force transmitted via the ram engagement portion results in that additional transmission members engaging a drive component of the punch device in a direction radial to the tool longitudinal axis are unnecessary. On the one hand, this significantly reduces the necessary installation space both in the radial and in the axial directions while on the other hand allowing the multiple tool according to the invention to be operated on a base station of a punch device, which is in particular not driven.

The punching tool magazine preferably comprises at least two, in particular at least three, in particular at least four, in particular at least six, in particular at least eight, in particular at least sixteen punching tools, which are guided in the guide body. It is conceivable to arrange locking pressure pieces between the guide body and the driving mechanism allowing the driving mechanism to be locked releasably relative to the punching tool magazine. Said locking pressure pieces allow the driving mechanism to be locked reversibly relative to the punching tool magazine in particular rotational positions. The tool head can be releasably connected to the driving shaft, in particular by means of a positive or a non-positive connection. Advantageously, this results in a particularly simple mounting of the multiple tool.

A multiple tool with an aligning means configured to interact with the ram ensuring a coaxial arrangement of a ram rotational axis to the tool longitudinal axis, ensures a particularly rugged operation and allows a workpiece to be machined in a particularly precise manner. The aligning means can be configured such as to form a surface-to-surface contact and/or a line contact with the ram. For this purpose, the aligning means may have at least one, in particular at least two, in particular at least three aligning members. The at least one aligning member can be configured in the manner of an aligning bolt and/or of an aligning web. The aligning member configured in the manner of an aligning web may have a contact surface, which is at least partly concentric to the tool longitudinal axis and allows interaction with the ram. Advantageously, the aligning means ensures a coaxial arrangement of the ram rotational axis relative to the tool longitudinal axis, which helps to achieve a precise workpiece machining and a rugged operation of the multiple tool when, in order to bring about the rotational movement, a force is transmitted to the tool head at a distance from the tool longitudinal axis, which results in a corresponding eccentric transverse force.

A multiple tool comprising a centring means providing some offset tolerance when connecting the ram to the ram engagement portion, is operable in a particularly reliable manner and shows little wear. Preferably, the centring means is configured as a centring chamfer in particular having an angle relative to the tool longitudinal axis of at most 45°, in particular at most 40°, in particular at most 25°. The centring means is preferably arranged in the region of the non-rotationally symmetric positive fit profile and/or in the region of the aligning means. Advantageously this enables the ram to engage the ram engagement portion of the tool head in a particularly secure and reliable manner.

A multiple tool comprising a pressing surface configured to transmit a pressing force from the ram to the tool head and a positive fit profile, which protrudes beyond the pressing surface in a direction counter to the punching direction, ensures a particularly compact arrangement of a plurality of tools in the punch device. The pressing surface is preferably configured as plane surface. The pressing surface may overlap with the tool longitudinal axis when seen in a plan view. Preferably, the pressing surface is surrounded by the positive fit profile and/or the aligning means at least partly, in particular completely. The ram may therefore have a particularly compact design in a plane perpendicular to the tool longitudinal axis. This allows a particularly dense arrangement of tools in the plane perpendicular to the tool longitudinal axis.

Arranging the plurality of punching tools, wherein at least two of the plurality of punching tools having a different radial spacing from the tool longitudinal axis, ensures a particularly space-saving arrangement thereof in the multiple tool. Preferably, the plurality of punching tools are arranged around the tool longitudinal axis. The plurality of punching tools can be positioned on circular paths arranged concentrically to the tool longitudinal axis, the circular paths each having a different diameter. Preferably, a first group of punching tools is arranged on an inner circular path while a second group of punching tools is arranged on an outer circular path. The number of punching tools arranged on the inner circular path may correspond to the number of punching tools arranged on the outer circular path. Preferably, the angle relative to the tool longitudinal axis between any two punching tools arranged adjacent to one another in a circumferential direction is always the same. Arranging the punching tools at a radial offset relative to one another allows them to be arranged in the punching tool magazine in a space-saving manner. This allows a greater number of punching tools to be received in a given punching tool magazine.

A magazine driving connection ensures simple accessibility of the punching tool magazine. The magazine driving connection can be configured as a positive and/or a non-positive connection, in particular as a screw connection. The magazine driving connection can be configured as a single screw arranged concentrically to the tool longitudinal axis in such a way as to provide a non-positive connection between the driving mechanism and the punching tool magazine. Preferably, the magazine driving connection is accessible and releasable without having to dismantle the driving mechanism and/or the punching tool magazine via a recess in the tool head. Preferably, the integrity of the driving mechanism is maintained even if the magazine driving connection is released. The driving mechanism can therefore be removed from the punching tool magazine as a whole after releasing the magazine driving connection.

A multiple tool, wherein the driving mechanism has a driving flange, which abuts against the guide body in the punching direction, and that a stripping force means is arranged between the driving flange and the tool head, the stripping force means being configured to apply a force to the tool head, which is oriented counter to a punching direction, ensures an efficient and precise machining of the workpieces. The driving flange can be rigidly connected to the guide body in the punching direction. Preferably, the driving flange is mounted rotatably in the guide body. The pressure pieces can be arranged between the driving flange and the guide body. The driving shaft can be mounted non-rotationally in the driving flange in such a way as to be displaceable along the tool longitudinal axis. The driving shaft is therefore mounted particularly precisely relative to the driving flange and relative to the guide body.

A stripping force means can be arranged between the tool head and the driving flange. Preferably, the stripping force means includes at least one spring member, configured in particular as a rubbery-elastic body or as a flat coil spring or as a helical spring or as a disk spring, in particular as a compression spring or a tension spring. The stripping force means is configured to apply a restoring force to the tool head counter to the punching direction. Preferably, the stripping force means is active between the tool head and the plurality of stripper members. Advantageously, this enables the punching stroke to be carried out at high speeds while ensuring a high-precision machining of the workpieces.

A driving mechanism comprising a selection disk, which is mounted in such a way as to be axially displaceable relative to the driving shaft and is rotatably drivable by the latter, said selection disk being configured to limit a displacement of inactive punching tools counter to the punching direction, ensures a particularly rugged operation with minimized vulnerability to failure. Preferably, the selection disk is mounted to the driving shaft, in particular to a shaft sleeve, in such a way as to be axially displaceable. The displacement of the selection disk relative to the driving shaft can be limited in the punching direction by a retaining ring. The selection disk is capable of limiting the displacement of inactive punching tools in the direction counter to the punching direction. Advantageously, this ensures that when the driving shaft is rotated to select the active punching tool, none of the inactive punching tools collides with the driving foot. The selection disk can be non-rotationally connected to the driving shaft. The selection disk may include a positive fit means, which interacts with the driving foot by forming a positive fit connection therewith in the circumferential direction about the tool longitudinal axis.

A driving mechanism, wherein a driving foot of the driving shaft passes through a selection opening of the selection disk in an axial direction, the driving foot acting on the active punching tool, ensures a compact design and the rugged operation of the multiple tool. The driving foot is capable of passing through the selection disk in a direction parallel to the tool longitudinal axis. For this purpose, the selection disk may be provided with a selection opening. Preferably, a clearance fit is formed between the selection disk and the driving foot, in particular in the edge region of the selection opening. The driving foot passing through the selection disk is capable of transmitting a rotational movement of the driving shaft to the selection disk.

At least one selection spring member which applies a force to the selection disk that is oriented in the punching direction is arranged between the driving shaft and the selection disk. The at least one selection spring member guarantees the rugged operation of the multiple tool. Preferably, the at least one selection spring member is configured as a rubbery-elastic body or as a flat coil spring or as a helical spring or as a disk spring or as a leaf spring, in particular as a compression spring or as a tension spring. Adjacent selection spring members are preferably evenly spaced from one another in the circumferential direction around the tool longitudinal axis. The selection spring members can be arranged on a circular path, which is concentric to the tool longitudinal axis. Advantageously, the at least one selection spring member ensures that the at least one inactive punching tool is displaced, by means of the selection disk, in the punching direction and relative to the driving shaft. The inactive punching tools can therefore be guided in the punching direction in a defined manner, which prevents a collision of the driving foot with the at least one inactive punching tool when the driving shaft is being rotated.

An inspection device for inspection of the punching tools being arranged between the guide body and the plurality of punching tools, allows a simple inspection and maintenance of the multiple tool. The inspection device can be actuable manually. For this purpose, the inspection device can be actuated in the punching direction via a head opening of the guide body. When actuated, the inspection device is configured to move at least one of the punching tools out of the punching tool magazine in the punching direction to such an extent as to allow an in particular visual inspection thereof. When actuating the inspection device, it is conceivable as well that all punching tools are moved out of the punching tool magazine in the punching direction for inspection.

An inspection device having a punch disk mounted in such a way as to be axially displaceable in the guide body, with the plurality of punching tools being mounted in such a way as to be axially displaceable relative to said punch disk, and that the plurality of punching tools each having a punching tool collar interacting with the punch disk in a positively locking manner so as to limit the displaceability of the plurality of punching tools relative to the punch disk in the punching direction, is actuable particularly easily. The plurality of punching tools are capable of passing through the punch disk in the direction of the tool longitudinal axis. Preferably, the plurality of punching tools are guided in the punch disk along the tool longitudinal axis. The punch disk is rigidly connected to the tool head preferably in the direction of the tool longitudinal axis, in particular by means of the magazine driving connection. The displaceability of the punch disk can be limited counter to the punching direction by a magazine screw, which is supported on the guide body. In the punching direction, the displaceability of the plurality of punching tools can be limited relative to the punch disk by means of the respective punching tool collar. Preferably, the respective punching tool collar and the punch disk are configured such that the at least one punching tool does not protrude upwardly beyond the punch disk when the punching tool collar abuts against the punch disk.

An inspection device having at least one inspection spring member, which applies a force to the plurality of punching tools that is oriented counter to the punching direction, is actuable particularly easily. The at least one inspection spring member can be configured as an elastic body or as a flat coil spring or as a helical spring or as a leaf spring or as a disk spring, in particular as a compression spring or as a tension spring. It is conceivable to arrange a plurality of inspection spring members around the tool longitudinal axis in such a way as to be evenly spaced from one another in the circumferential direction. The at least one inspection spring member is preferably arranged between the guide body and the punch disk. The at least one inspection spring member is able to act on the respective punching tool collar of a punching tool via the punch disk.

The at least one inspection spring member having a spring rate, which is between 0.1 N/mm and 5 N/mm, more preferably between 0.2 N/mm and 1.0 N/mm, ensures a particular simple actuation of the inspection device. Advantageously, this allows the inspection device to be actuated manually or with only one finger.

The at least one inspection device being formed with a radial spacing from the tool longitudinal axis, ensures a precise guidance of the punch disk. Preferably, the at least one inspection member is arranged on a circular path, which is concentric to the tool longitudinal axis. This prevents the punch disk from tilting when being actuated.

Further features, advantages and details of the invention emerge from the ensuing description of an exemplary embodiment.

DETAILED DESCRIPTION

A punch device1as shown inFIG. 1comprises a frame structure2, with an actuating member4comprising a ram5being attached to the frame upper part3thereof. A multiple tool6is arranged below the ram5. A workpiece counter holder8is arranged on a frame lower part7of the punch device1. A workpiece9is located between the multiple tool6and the workpiece counter holder8. The workpiece9can be positioned on a workpiece receptacle11of the punch device1by means of a positioning drive10. The multiple tool6and the workpiece counter holder8interact in the manner of a punch and die. The multiple tool6and the workpiece counter holder8are arranged on a machine turret12. Furthermore, additional machining tools13are arranged in the machine turret12. The multiple tool6or any other machining tool13can be selected by driving the machine turret12. The workpiece9can be a sheet plate, in particular a metal sheet plate.

The machine turret12with the multiple tool6placed therein is shown in more detail inFIG. 2. The machine turret12comprises base stations14and indexing stations15adapted to receive tools6,13. The base stations14and the indexing stations15are arranged in a circle on the machine turret12. The indexing stations15are rotatably drivable by means of a tool drive (not shown) of the punch device1. The base stations14arranged between the indexing stations15are not drivable by means of this tool drive. The multiple tool6is arranged on one of the base stations14.

The multiple tool6is shown in more detail inFIGS. 3 to 6. The multiple tool6comprises a punching tool magazine16and a driving mechanism17mounted rotatably in relation thereto.

The punching tool magazine16includes a guide body18, a plurality of punching tools19and an inspection device20acting between the guide body18and the plurality of punching tools19. In order to fix the guide body18in the direction of a tool longitudinal axis21of the multiple tool6, said guide body18is provided with a fixing flange22. A tongue/groove connection between the machine turret12and the guide body18ensures that the guide body18is secured to the machine turret12around the tool longitudinal axis21. For this purpose, the guide body18is provided with a fixing groove23. The driving mechanism17is mounted rotatably in the guide body18.

The punching tools19are mounted in the punching tool guides24of the guide body18in such a way as to be displaceable in the direction of the tool longitudinal axis21. The punching tool guides24are evenly spaced from one another in the circumferential direction relative to the tool longitudinal axis21. The punching tools24each have a different radial spacing from the tool longitudinal axis21. The punching tool guides24are alternately arranged on an inner and an outer circular path when seen in the circumferential direction. The inner and the outer circular path are concentric to the tool longitudinal axis21.

Stripper members25are arranged at the bottom of the guide body18to strip off the workpiece9when the punching tools9revert to their initial positions. The inner stripper members25arranged radially to the tool longitudinal axis21are fixed to the guide body18by means of stripper holders26. The radially outer stripper members25are fastened in the direction of the tool longitudinal axis21by means of radial grooves (not shown) and secured by means of pressure pieces to prevent a displacement in the axial direction.

The inspection device20is arranged in the guide body18. The inspection device20includes a plurality of inspection spring members27, which are configured to apply a force to the plurality of punching tools19in a direction counter to a punching direction28. The inspection spring members27are oriented parallel to the tool longitudinal axis21and arranged radially in the region of the outer punching tool guides24. The inspection spring members27are configured as helical compression springs and arranged in inspection spring boreholes29of the guide body18.

The inspection spring members27are active between the guide body18and a punch disk30. The punch disk30is provided with a magazine screw31a. The punching tools19pass through the punch disk30in disk boreholes31and are mounted displaceably in relation to the punch disk30in the direction of the tool longitudinal axis21. The magazine screw31ais supported on the guide body18counter to the punching direction28and limits the displaceability of the punch disk30in the upward direction.

The punching tools19have a punching tool collar32. The punching tool collar32is arranged above the disk boreholes31in such a way that the punch disk30is positively connected with the punching tools19counter to the punching direction28. The spring force provided by the inspection spring members27therefore acts on the punching tools19via the punch disk30. The inspection spring members27have a spring rate of 0.5 N/mm. The punch disk30mounted in the guide body18is displaceable along the tool longitudinal axis21due to a variable length of the inspection spring members27of 10 mm.

The driving mechanism17comprises a tool head33, which is displaceable relative to the guide body18along the tool longitudinal axis21, and a driving shaft34attached thereto. The tool head33is rigidly connected to the driving shaft34by means of screw members35.

The tool head33has a ram engagement portion36allowing the tool head33to be actuated by means of the ram5of the punch device1. The ram5interacts with the multiple tool6in the punching direction28via an engagement bottom37of the ram engagement portion36. The ram engagement portion36has a positive fit profile38, which is non-rotationally symmetric relative to the tool longitudinal axis21, in order to transmit a rotational movement from the ram5to the multiple tool6. The positive fit profile38is configured as a radial groove.

The tool head33is supported, via a stripping force means39, on a driving flange40in the direction of the tool longitudinal axis21. The stripping force means39is configured in the manner of helical compression springs. The stripping force means39is configured to apply a restoring force to the tool head33counter to the punching direction28.

The driving flange40is mounted rotatably in the guide body18. In order to releasably lock the driving flange40in discrete angular positions relative to the tool longitudinal axis21, the driving flange40has locking pressure pieces41, which engage locking grooves42of the guide body18. The position of the locking pressure piece41relative to the locking grooves42in the circumferential direction about the tool longitudinal axis21is configured such that when selecting an active punching tool19, the driving mechanism17is locked relative to the punching tool magazine16. The driving flange40has a driving flange collar43. The driving flange collar43forms a stop opposite the guide body18when seen in the punching direction28. The driving flange40is non-rotationally connected to the driving shaft34.

The driving shaft34is mounted displaceably in relation to the driving flange40in the direction of the tool longitudinal axis21. The driving shaft34has a driving foot44. The driving foot44is configured to transmit punching forces to a single active punching tool19and to the punch disk30. The active cross-section of the driving foot44extends across the radial distance of the inner and outer punching tools19and has an extension in the circumferential direction, which allows actuation of a single punching tool19.

The driving shaft34surrounds a shaft sleeve45. A selection disk46is mounted to the shaft sleeve45in such a way as to be rotatable about the tool longitudinal axis21. The selection disk46is capable of moving relative to the shaft sleeve45in the direction of the tool longitudinal axis21between a step of the driving shaft34and a retaining ring47mounted to the shaft sleeve45. Selection spring members48are arranged between the driving shaft34and the selection disk46. The selection spring members48are configured as helical compression springs and act on the selection disk46in the punching direction28. The displacement of the selection disk46is limited in the punching direction28by a disk stop49of the guide body18.

The selection disk46has a selection opening50. The driving foot44acting on an active punching tool passes through the selection opening50of the selection disk46. The remaining inactive punching tools19are covered by the selection disk46when seen in a plan view. The shaft sleeve45is non-positively connected, via a magazine driving connection51, with the punch disk30. The magazine driving connection51connects the driving mechanism17with the punching tool magazine16.

The magazine driving connection51is configured as a hollow screw. A lubricant channel51is formed in the magazine driving connection51. The lubricant channel52extends into the punch disk30. Lubricant can therefore be delivered to the punching tools19via a feed opening53of the tool opening33.

The tool head33, in particular the ram engagement portion36, is shown in more detail inFIG. 7. In addition to the positive fit profile38, the ram engagement portion36comprises a pressing surface54configured to transmit a pressing force F from the ram5to the tool head33, an aligning means5, which ensures a coaxial arrangement of a ram rotational axis to the tool longitudinal axis21, and a centring means21, which provides some offset tolerance when connecting the ram5to the ram engagement portion36. The pressing surface54is configured as a plane contact surface configured to transmit the pressing force F from a front face of the ram5to the tool head33. The positive fit profile38protrudes upwardly beyond the pressing surface54, in particular counter to the punching direction28.

The aligning means55is configured as a hollow cylindrical sector-shaped web. In order to arrange the ram rotational axis56coaxially to the tool longitudinal axis21, the hollow cylindrical sector shaped web extends across a central angle of more than 180°, in particular of more than 240°. The aligning means55directly abuts against the positive fit profile38.

The centring means57is configured as a chamfer. The centring means57is arranged on an upper edge of the positive fit profile38and of the aligning means55.

The mode of functioning of the multiple tool6for the punch device1is as follows.

The multiple tool6is arranged below the ram5of the actuating member4by actuating the machine turret12. The workpiece9is positioned, by means of the positioning drive10, between the multiple tool6and the workpiece counter holder8.

The multiple tool6is in an initial position, with the ram5being disengaged from the tool head33. The stripping force means39is preloaded between the driving flange collar43and the tool head33. The driving foot44of the driving shaft34protrudes into the selection opening50of the selection disk46. The selection disk46abuts against the disk stop49. The punch disk30is preloaded, by means of the inspection spring members27, against the selection disk46. The selection disk46is preloaded, by means of the selection spring members48, in the punching direction28against the disk stop49and the punch disk30. The punching tool collars32of the punching tools19contact the punch disk30so the punching tools19do not protrude beyond the guide body18in the punching direction28.

The ram5is displaced downwardly along the tool longitudinal axis21, in particular in the punching direction28. The ram5engages the centring means57of the ram engagement portion36. The centring means57ensures a guided displacement of the ram5in the direction of the engagement bottom37while compensating an offset between the ram rotational axis56and the tool longitudinal axis21. When the ram5is displaced further in the punching direction28, the ram5engages the positive fit profile38, the aligning means55and the pressing surface54. The pressing force F is transmitted from the ram5to the engagement bottom37, in particular to the pressing surface54. The tool head33is rotatably driven by the ram5in order to select the active punching tool19. The aligning means55ensures the coaxial arrangement of the ram rotational axis56to the tool longitudinal axis21. The rotational movement is transmitted from the ram5to the tool head33via the non-rotationally symmetric positive fit profile38. The rotational movement is transmitted from the tool head33to the driving shaft34and the driving foot44. The driving foot44penetrating the selection opening50rotates the selection disk46about the tool longitudinal axis21. In this manner, the driving foot44is positioned above the active punching tool19while the inactive punching tools19are covered by the selection disk46. The lower side of the driving foot44is then coplanar to the lower side of the selection disk46. The locking pressure pieces41engage the locking grooves42so as to provide a resistance against a rotation of the driving mechanism17relative to the punching tool magazine16.

By means of the ram5, the tool head33is moved downwardly in the punching direction28. The tool head33acts on the active punching tool19and the punch disk30via the driving shaft34and the driving foot44. As shown inFIG. 4, the driving foot44passes through the selection opening50, and the active punching tool19passes out of the guide body18, in particular out of the stripper member25, in the punching direction28. The active punching tool19passes through the workpiece9(not shown) and protrudes into the workpiece counter holder8, which is not shown either. The stripping force means39are compressed between the tool head and the driving flange40abutting against the guide body18. The selection spring members48are compressed between the driving shaft34lowered in the punching direction28and the selection disk46abutting against the disk stop49. The punch disk30is displaced in the punching direction28towards the bottom of the guide body18, with the inspection spring members27arranged therebetween being compressed even more. Via the feed opening53, the multiple tool6is supplied with lubricant, which is delivered to the punching tools19via the lubricant channels52. The multiple tool6is in its cutting position.

The ram5is moved back counter to the punching direction28. The stripping force means39act on the tool head33in an upward direction, in other words counter to the punching direction28. The tool head33, the driving shaft34, the shaft sleeve45and the magazine driving connection51are displaced upwardly counter to the punching direction28together with the punch disk30and the punching tools19. The compressed inspection spring members27and the selection spring members48act on the punch disk30and the driving shaft34so as to assist the displacement of the driving mechanism17relative to the guide body18. The stripper members25prevent the workpiece9from being lifted while the active punching tool19is moved back counter to the punching direction28. The multiple tool6is in its initial position.