WO2021204415A1

WO2021204415A1 - Device for transferring tools and method for transferring tools

Info

Publication number: WO2021204415A1
Application number: PCT/EP2021/000039
Authority: WO
Inventors: Michael Hemmerich; Paul Gurka
Original assignee: Michael Weinig Ag
Priority date: 2020-04-09
Filing date: 2021-04-06
Publication date: 2021-10-14
Also published as: DE102020002320A1

Abstract

The invention relates to a device provided for transferring tools (35), tool units and the like between two clamp-type tool holders (45), which each have legs (46, 47), which legs at least interlockingly engage in a gripping groove (59) of the tool (35). In the transfer position, the legs (46, 47) are directed toward each other. The device has at least one transfer unit (51), which has at least one transfer part (55), which transfer part can be moved (in the y-direction) perpendicularly to the axis of the tool (35). The tool (35) is moved from one tool holder (45) into the other tool holder (45) in such a way that the tool is held by the legs (46, 47) of at least the one tool holder (45) during the transfer process.

Description

DEVICE FOR DELIVERING TOOLS AND METHOD FOR DELIVERING

TOOLS

The invention relates to a device for transferring tools, tool assemblies and the like, in particular for processing workpieces made of wood, plastic, aluminum and the like, according to the preamble of claim 1, a system with such a device according to claim 14 and a method for transferring Tools, tool assemblies and the like according to claim 15.

Systems are known in which elongated workpieces made of wood are machined on their long sides and also on their front sides with appropriate tools. Workpieces machined in this way are used, for example, to manufacture window frames. The tools are usually profiling tools with which corresponding profiles are milled on the corresponding long and front sides of the workpieces. The tools are usually HSK tools, for the automatic exchange of which from a tool magazine an elaborate changing device and an elaborate clamping system are required. It is designed in such a way that the tool clamps on the intended clamping slope inside the HSK cone of the tool. The clamping system can also be designed in such a way that the cylinder surface of the tool adjacent to the gripper groove is used for clamping, since the tools are received in the tool magazine via the gripper groove. Complex, clocked pliers are therefore required, which take up the tool with sufficient clamping force. The dispensing and pick-up clamps also occupy space. The invention is based on the object of designing the generic device, the system and the method in such a way that a tool change can be carried out reliably and quickly using simple means.

This object is achieved according to the invention with the device of the generic type with the characterizing features of claim 1, with the system with the features of claim 14 and with the method with the features of claim 15.

In the device according to the invention, the tool holders are designed in the shape of a clamp. You have legs that at least positively engage in the gripper groove of the tool. In the transfer position, the legs of the tool holders are directed towards one another, so that they engage in the gripper groove from opposite sides. During the transfer process, the legs of at least one tool holder are therefore always in engagement with the gripper groove, so that the tool is always held and cannot fall down. By moving a transfer part of a transfer unit transversely to the tool axis, the tool is pushed into the receiving tool holder. The transfer part is brought into engagement with the tool beforehand. The invention creates an inexpensive tool transfer device, with simple and inexpensive clamping pliers being able to be used as tool holders.

Tools are not only to be understood as individual tools, but also tool assemblies with two or more tools or tool spindles.

The transfer part is preferably designed so that it can be clocked into an interface of the tool. For this purpose, the transfer part can be adjusted in the direction of the tool axis (z-direction). The transfer part is advantageously moved into the interface with a precise fit. After moving the tool, the transfer part can be moved out of the interface of the tool. The two tool holders can, however can also be moved apart at the same time as the transfer part is moved out. The transfer part inserted into the interface of the tool exerts a tilt-free horizontal force on the tool, which can thus be moved reliably between the tool holders without tilting.

One tool holder is advantageously part of a first magazine.

The first magazine on which the transfer unit is provided is advantageously connected to at least one carrier for a tool spindle in which the tool can be clamped. As a result, the magazine is always in the area of the tool spindle, so that the tool in the magazine can be inserted into the tool spindle at any time if necessary.

The carrier can advantageously be moved in the x direction parallel to the longitudinal direction of the workpieces. This allows the long sides of the workpiece to be machined by moving the carrier with the tool inserted in its tool spindle.

An advantageous embodiment results when the carrier is formed out as a portal. Then the carrier can span the transport path for the workpieces to be processed. The tool spindle can be optimally attached to the portal.

The first magazine itself can preferably be moved transversely to the x direction.

The first magazine can then move up to the tool spindle in the y-direction for a tool change and can be inserted or exchanged there.

In order to ensure easy adjustment of the first magazine, a cross member is advantageous from the carrier, on which the first magazine is arranged. This cross member accordingly extends in the y direction and can, for example, be a vertically standing plate along which the first Magazine can be moved. The cross member is provided with appropriate guides along which the first magazine can be moved in the y-direction.

In a preferred embodiment, the first magazine is formed by a plate magazine that can be rotated about a vertical axis (z-axis). This plate magazine can advantageously have a star-shaped carrier which has several arms which are each provided with a storage space for tools at their free ends. The tools required for machining the workpieces can be stored in these storage locations, which form tool holders, and can be exchanged in the tool spindle if necessary.

If a tool that is stored in the plate magazine is used in the tool spindle, the plate magazine or its star-shaped Trä ger is rotated around the vertical z-axis to bring the desired tool to the workpiece spindle.

A structurally simple and reliable design results when the first magazine is connected to a slide which can be moved along at least one guide running in the y-direction.

The transfer part of the transfer device is advantageously adjustable in the z direction between a rest position and an engagement position. In the rest position, the transfer part, which is advantageously designed in the form of a bolt, is out of engagement with the interface of the tool. From this rest position, the transfer part can be adjusted in the z-direction into the engagement position in which the transfer part engages the interface of the tool.

In another embodiment, the transfer part can be, for example, a conical sleeve that is pushed over the cone of the tool. It is also possible to provide two slides opposite one another in the y-direction, which for moving the tool lie diametrically opposite one another on its cone and / or cylinder.

The other tool holder is advantageously part of a second magazine, which can be a main magazine.

In contrast to the first magazine of the carrier, the main magazine can hold a significantly larger number of tools. The main magazine can be a shelf magazine in which the storage locations (tool receptacles) are arranged in at least one row next to one another. The main magazine can also be a rotatable plate magazine. In principle, such a shelf or plate magazine can also have two or more floors with corresponding storage spaces. The first magazine of the carrier can remove the corresponding tool from this main magazine or store a corresponding tool in the storage space of the main magazine.

It is advantageous here if the first magazine can be displaced in the z-direction with respect to the cross member. The first magazine can then simply move to the several floors of the main magazine, for example. The adjustment in the z-direction can alternatively or additionally also take place from the main magazine.

The system according to the invention is equipped with the device according to the invention, with which a problem-free and simple change of the Werkzeu ge is possible.

In the method according to the invention, the tool is moved from one tool holder to the other. The tool is held by the legs of at least one tool holder. This reliably prevents the tool from falling down during the transfer process. Moving the tool from one tool holder to the other enables a quick transfer process. The subject of the application results not only from the subject matter of the individual patent claims, but also from all information and features disclosed in the drawings and the description. Even if they are not the subject of the claims, they are claimed to be essential to the invention insofar as they are new to the state of the art individually or in combination.

Further features of the invention emerge from the further claims, the description and the drawings.

The invention is explained in more detail using an exemplary embodiment shown in the drawings. Show it

Fig. 1 is a perspective view of a system according to the invention for processing workpieces made of wood, plastic and derglei Chen with a tool changing device according to the invention,

FIG. 2 shows, in a perspective and enlarged view, a table of the system according to the invention according to FIG. 1,

3 shows, in an enlarged and perspective illustration, a tool magazine of the system according to the invention according to FIG. 1,

Fig. 4 in an enlarged view and partially in section, the tool changing device according to the invention during a tool change,

Fig. 5 to

11 shows the tool change process in different positions,

Fig. 12 is a perspective view of a recording of the Werkzeugma magazine of the system according to the invention in a perspective and enlarged view, 13 shows a perspective representation of a tool assembly during the transfer between two receptacles of two magazines.

In the system described below, elongated workpieces are processed, which can advantageously consist of flolz, but also of plastic, aluminum and a similar material. The workpieces 1 have a rectangular cross-section and are fed on a feed device 2 transversely to their longitudinal direction in the y-direction. For this purpose, the feed device 2 is provided with at least one transport unit 3 with which the workpieces 1 are transported into the system transversely to their longitudinal direction. The workpieces 1 to be worked can be placed on the feeder 2 by Fland. However, an automatic workpiece feed is also possible.

The feed device 2 has at least one support table 4 on which the workpieces 1 are placed. As soon as the workpieces 1 leave the support table 4, they are picked up by the transport unit 3 and transported transversely to their longitudinal direction. The feed device 2 can have several transport units 3 lying next to one another, for example in order to be able to transport several workpieces 1 lying next to one another at the same time.

The workpieces 1 are fed to two clamping devices 5a, 5b with which the workpieces 1 are clamped on the top and bottom.

The clamping devices 5a, 5b have at least one, in the execution example three clamping carriages 6a to 6c, 7a to 7c, each having upper clamping jaws 8a with which the workpieces 1 are clamped against lower clamping jaws 8b in a known manner. The clamping carriages 6a to 6c, 7a to 7c can be individually positioned in the X direction according to the length of the workpieces 1. The tensioning carriages 6a to 6c, 7a to 7c can be moved in the x direction along a guide 9. The elongated workpieces 1 extend in the x direction, the transport direction.

The clamping carriages 6a to 6c, 7a to 7c reach a transfer position 10 in which the workpieces 1 can be taken over by a second clamping device 11.

It has a support 12 for the workpieces 1 (FIG. 2), on which the workpieces 1 rest in a clamped state. The support 12 extends in the x direction over the length of the clamping device 11. An upper clamping jaw 13 is used to clamp the workpieces 1, which extends in the x direction over the length of the clamping device 11 and which has at least one drive 14, in the exemplary embodiment is connected to three drives 14 lying one behind the other at a distance in the x-direction, with which the upper clamping jaw 13 can be adjusted in the z-direction. The drives 14 each have a carrier 14a to which the clamping jaw 13 is attached and which is adjustable in the z-direction along a guide (not shown). The drive 14 is a piston-cylinder unit with which the clamping force is generated.

The drives 14 are parts of adjustment units 15 on which the support 12 is mounted and with which the support 12 can be moved in the z-direction together with the upper clamping jaw 13 and its drives 14. The adjustment units 15 are provided on further adjustment units 15a which can be moved in the y-direction.

The system has in the area of the clamping device 11 in the y-direction it stretching guides 16 for the adjustment units 15a. The adjustment units 15a are moved in the y-direction by means of drives (not shown). This axis of travel is designed as a positioning axis, so that the support 12 and the clamping jaw 13 can be set exactly in the y-direction for taking over the workpieces 1. With the clamping carriages 6a to 6c, 7a to 7c and the clamping device 11, the workpieces 1 in the transfer position 10 can each be clamped with the clamping jaws 8a, 8b over part of their width so that the workpieces 1 at one of them in the x-direction running long side can be processed. The clamping of the workpieces 1 with respect to the y-direction takes place by the described positioning of the Spanneinrich device 11. It has a stop ruler 11a extending in the x-direction (FIG. 1), on which the workpieces 1 rest with one of their long sides. The clamping carriages 6a to 6c, 7a to 7c are provided with counterstops (not shown) which are resiliently mounted in the y-direction and which load the workpieces 1 in the y-direction against the stop ruler 11a.

The lower clamping jaws 8b are also arranged in such a way that they clamp the workpieces 1 only over part of their width (y-direction), so that the workpieces 1 can be attached to the clamping jaws 6a to 6c, 7a to 7c without being hindered by the clamping jaws of the clamping wagons one long side can be machined.

In the transfer position 10, the workpieces 1 between the clamping jaws 8a, 8b; 12, 13 passed in such a way that the left or right long side of the workpieces can be machined in each case as seen in the x direction. The clamping takes place here in the manner described in each case in such a way that the clamping jaws do not hinder the processing by the tools.

The transfer of the workpieces 1 between the clamping jaws of the clamping carriages 6a to 6c, 7a to 7c and the clamping device 11 takes place in such a way that the workpieces are always clamped during the transfer and they maintain their respective position after the first processing during the transfer to the clamping device 11 . This ensures a high processing quality.

First of all, the workpieces 1 are processed when the clamping carriages 6a to 6c, 7a to 7c located in the transfer station clamp the workpieces 1. The workpieces 1 can be clamped in such a way that they protrude in the x direction over the clamping carriages 6a to 6c, 7a to 7c. Then it is possible with the appropriate tools, not only the ongoing one long side of the workpieces 1 to be machined, but also both end faces of the workpieces. As soon as the machining of one long side has been completed and the workpieces 1 have been taken over by the clamping device 11, the clamping carriages 6a to 6c, 7a to 7c return in the x direction to their starting position shown in FIG In the manner described, the next workpieces to be processed 1 can be picked up and clamped.

Since the clamping carriages 6a to 6c, 7a to 7c can be positioned independently of one another in the x direction, it is possible to machine the workpieces 1 from above in the area between or next to the clamping jaws 8a, for example to introduce grooves or bores.

In the following, the workpieces that have been finished are marked with 1 ‘.

As soon as the processing of the workpieces 1 ^' clamped with the clamping device is completed, the workpieces' clamped by means of the clamping jaws 12, 13 are moved back by moving the adjustment units 15 back in the y-direction. A receiving unit 17 (FIG. 1) initially located in the area above the clamping jaw 13 is lowered until it is located in the area below the workpieces '\' of the clamping device 11 clamped in the clamping jaws 12, 13, so that the finished workpieces 1 'can be pushed onto the receiving unit 17.

It has a support part 18 which extends horizontally and protrudes from a side wall 19 that adjoins vertically upwards.

Before the finished workpieces 1 'are pushed onto the receiving unit 17, the upper jaw 13 is raised. Subsequently, the workpieces with the stop ruler 11 a, which is provided on the adjustment units 15, pushed onto the support part 18 by the stop ruler 11 a is advanced by a drive, not shown. After the handover of the finished workpieces 1 'to the receiving unit 17, it is adjusted upwards again. The clamping carriages 6a to 6c, 7a to 7c can be moved into the transfer station 10 with the next workpieces 1 to be machined.

The receiving unit 17 is provided on a carrier designed as a portal 22, which can be moved in the x direction. The portal 22 has two stands of 23, 24 (Fig. 1), which can be moved on guides 25, 26 which extend in the x direction. The two uprights 23, 24 are connected to one another at the upper end by a cross member 27. To move the portal 22, a drive 28 is provided, which is arranged, for example, on the stand 23.

A slide 29, which can be moved in the z direction, for adjusting the height of the receiving unit 17 is arranged on the cross member 27. To support the Aufla part 18 two arms 21 are provided, which are articulated with one end on the receiving unit 17 and with the other end on the carriage 29.

With the portal 22, the receiving unit 17, as soon as the finished workpieces 1 'have been placed on it and it has been moved into its upper position, along the guides 25, 26 in the x-direction so far that the workpieces 1' can be transferred from the receiving unit 17 to a discharge unit 30. It is provided in the area above the feed device 2. For this purpose, the receiving unit 17 is lowered in the z direction. The receiving unit 17 has recesses 20 in which, in the exemplary embodiment, belt tracks 30a of the discharge unit 30 protrude when the receiving unit 17 is lowered. The workpieces 1 ′ deposited on the receiving unit 17 can thereby be grasped by the belt tracks 30a and removed from the receiving unit 17. The finished workpieces 1 ‘are removed from the discharge unit 30 for further processing.

The two guides 25, 26 for the portal 22 are provided so that the guide 9 for the clamping carriages 6a to 6c, 7a to 7c in the area between the two guides 25, 26 is located. As a result, the portal 22 can be moved in the x direction and, at the same time, the tensioning carriages 6a to 6c, 7a to 7c in the x direction, so that a time-parallel mode of operation is guaranteed. In the exemplary embodiment, the guide 9 for the tensioning carriages 6a to 6c, 7a to 7c is provided in close proximity to the guide 26 of the portal 22. The stand 24 of the portal 22, which can be moved along the guide 26, is designed in such a way that it does not collide with the clamping carriages 6a to 6c, 7a to 7c which can be moved along the guide 9.

The tools provided for machining the workpieces 1 are provided on the portal 22, which is moved along the guides 25, 26 for machining the longitudinal sides and also the end faces of the workpieces 1.

A slide 31 is arranged on the cross member 27 such that it can be moved in the y-direction. The slide 31 is advantageously arranged on the side of the cross member 27 facing away from the feed device 2 and the discharge unit 30. It has guides 32 which run in the y direction and along which the slide 31 can be moved (FIG. 3). The slide 31 carries a tool spindle 33, the axis of which runs in the z-direction and which in the exemplary embodiment is a motor spindle.

A tool 35, which is required for machining the workpieces 1 and which is provided in a magazine 36, is inserted into the lower end of the tool spindle 33. It is an example of a linear magazine which has storage spaces 37 for the tools 35 arranged one behind the other in a row.

The tool spindle 33 is held on a spindle carrier 38 which can be moved in the z-direction with respect to the slide 31. The spindle carrier 38 can be adjusted in the z-direction by means of a drive 39 mounted on the slide 31.

The corresponding tool 35 can by means of the portal 22, the slide 31 and the spindle carrier 38 to the desired extent in x, y and z Direction to be moved. In this way, the corresponding sides of the workpiece 1 can be machined in the manner described.

In order to remove the tools 35 from the tool magazine 36 and insert them into the tool spindle 33, the system is provided with a tool changing device 40 which is provided on the portal 22 and is accordingly moved with the portal 22 in the x direction.

With the tool changing device 40, the tools 35 required for machining the workpieces 1 can be removed from the magazine 36 and inserted into the tool spindle 33. Conversely, the respective tool 35 can be inserted into the magazine 36 with the tool changing device 40.

The tool changing device 40 has a plate magazine 41 with an axis 42 lying in the z direction, with which the plate magazine 41 can be rotated.

A star carrier 43 with radially extending arms 44, which are each provided with a receptacle 45 for tools 35 at the free end, is seated in a rotationally fixed manner on the axis 42. In the exemplary embodiment, the star carrier 43 has four arms 44, so that four tools can be stored in the plate magazine 41. The star carrier 43 can also have fewer or more arms, so that a smaller or a larger number of tools 35 can also be stored in the plate magazine 41.

The receptacles 45 are tong-shaped with two legs 46 which act as clamps in order to receive and hold the tools 35 in a manner yet to be described.

The linear magazine 36 has storage locations 37 (FIG. 3), which are equipped with the recordings 45 of the plate magazine 41 corresponding receptacles 34, which are each limited by two legs 47 and with which the tools 35 are held in the magazine 36. The plate magazine 41 is part of a slide 48 (FIG. 5) which can be moved in the y-direction along a transverse support 49 extending in the y-direction. It is connected to the portal 22, in particular to its stand 24. As FIGS. 3 and 5 show, the cross member 49 is provided on one side with two guides 50 which extend in the y direction and are spaced one above the other in the z direction. With the slide 48, the Tellerma magazine 41 can be moved into the respective transfer positions.

A cylinder unit 60 (FIG. 3) which is arranged above the cross member 49 is used for this purpose. In addition to the two transfer positions, a central position in which the plate magazine 41 is standing while the workpieces 1 are being processed can be advantageously approached.

The tool changing device 40 is also provided with a transfer unit 51 (FIG. 4) with which the tools 35 can be transferred from the magazine 36 to the plate magazine 41. The transfer unit 51 consists of a slide 54, a transfer part 55 and a drive 56.

The transfer unit 51 is provided on a holder 52, which is advantageously designed in the form of a plate and extends in the y direction. The holder 52 has a support element 53 which is fastened to the carriage 48. Advantageously, the transfer unit 51 is additionally supported by a cover 61 (FIG. 4) of the Tel lermagazins 41, which at the same time protects the tools in the plate magazine 41 from contamination.

In a further embodiment (not shown), the transfer unit 51 can be attached to the free end of the cross member 49.

The transfer unit 51 has the slide 54, which can be moved in the y-direction along the holder 52. A guide rail 54 ′ for the slide 54 is attached to the holder 52. The adjustment takes place via a Kol ben-cylinder unit 74 [whose housing 75 is connected to the slide 54 and whose piston rod 76 is connected to the holder 52. The transfer part 55, which can be adjusted in the z-direction, is accommodated in the slide 54. It is advantageously designed in the shape of a bolt and can be moved from a rest position into a transfer position. For this purpose, the drive 56 is provided, for example a pneumatic cylinder with which the transfer part 55 can be moved axially.

Fig. 4 shows the transfer part 55 in its transfer position, in which it engages in egg ne inner contour 57 of an interface 58 on the tool side. It is advantageously an HSK interface. It has a fitting diameter at the end of the cone and at a recess in the cone bottom, into which the bolt-shaped transfer part 55 can be inserted, whereby a tilt-free horizontal force can be exerted on the tool 35. This makes it possible to transfer the tool 35 from the receptacle 34 of the magazine 36 into the receptacle 45 of the plate magazine 41 without tilting.

In the region of the interface 58, the tool 35 has a gripper groove 59 which extends over the circumference of the interface 58 and in which the legs 46, 47 of the receptacles 45, 34 engage. The legs 46, 47 are designed in such a way that they engage in the gripper groove 59 in a form-fitting and advantageously non-positively locking manner. The tool 35 is thereby supported in the axial direction both in the magazines 36, 41 and during the transfer, so that there is no risk of it falling down.

It is advantageous if the transfer part 55 is designed in such a way that when the transfer part 55 is retracted, the inner contour 57 of the interface 58 is blown out. The corresponding bore can be provided in the transfer part 55.

It is also possible to separately provide at least one blow nozzle for the supply of blown air on the side of the transfer unit 51, through which a blow jet passes, blows or is sucked ge with the chips from the bore of the tool 35. The transfer process of the tools 35 is described in more detail with reference to FIGS. 5 to 12.

5 shows the tool 35 which is located in the magazine 36. Each Spei cherplatz 37 of the magazine 36 has the receptacle 34 with the two legs 47, which engage positively and advantageously non-positively in the gripper groove 59 of the tool 35. The plate magazine 41 and the transfer unit 51, which is located in the area above the plate magazine 41 or its star carrier 43, are still at a distance in the y-direction from the tool 35 stored in the magazine 36.

In order to pick up the tool 35 from the magazine 36, the slide 54 is moved in the y-direction on the carrier 49 in the direction of the magazine 36. The plate magazine 41 is aligned in the x-direction by moving the portal 22 in relation to the tool 35 to be taken over and the star carrier 43 is rotated about the vertical axis of the plate magazine 41 so that the legs 46, 47 of the receptacles 34, 45 with their free Ends opposite each other. In this position (FIG. 6) the tool 35 is still held in the receptacle 34 of the magazine 36.

The transfer part 55 of the transfer unit 51 is withdrawn so far that it does not come into contact with the tool 35 when the slide 54 is moved (FIG. 6).

As soon as the position shown in FIG. 6 is reached, the transfer part 55 of the transfer unit 51 is shifted downward in the z-direction until it engages the inner contour of the interface 58 of the tool 35 in the manner described (FIG. 7).

Then the carriage 54 of the transfer unit 51 with the work tool 35 is moved in the y-direction in the direction of the plate magazine 41. Then the tool 35 is firmly pressed into the legs 46 of the receptacle 45 ge, so that the tool 35 is held securely in the star carrier 43 of the plate magazine interest 41 (Fig. 8). The slide 48 is then moved together with the plate magazine 41 and the transfer unit 51 along the guides 50 of the carrier 49 in the y direction towards the portal 22 into the position for transfer to the portal-side tool spindle 33 (FIGS. 9 to 11).

The transfer part 55 of the transfer unit 51 is withdrawn before, during or after driving into the transfer position, so that it comes free from the work tool 35 (Fig. 9).

Then the plate magazine 41 is rotated by means of the axis 42 by 180 ° ge (Fig. 10).

As a result, the tool 35 reaches the area below the tool spindle 33 provided on the portal 22 (FIG. 11). As soon as this Übergabepo position is reached, the tool spindle 33 is moved so far down in the z-direction that the tool 35 is taken up in the tool spindle 33 and clamped by means of a known HSK clamping system. The plate magazine 41 is designed as a so-called pick-up magazine. If a tool was already clamped in the tool spindle 33, it is previously released into a free space of the plate magazines 41 when the tool is changed.

As soon as the tool 35 is clamped in the tool spindle 33, either the tool spindle 33 with the tool 35 can be moved in the y-direction so that the tool 35 is released from the star carrier 43 of the Tellerma magazine 41, or the plate magazine 41 is opened by means of the slot At least 54 moved back so far in the y direction that the star carrier 43 comes free from the tool 35.

The legs 46, 47 of the receptacles 45, 34 or the receptacles themselves be advantageously made of plastic. They are elastically resilient and are elastically deformed when the tool 35 is inserted. As a result, the tool 35 can also be secured in the receptacles in a non-positive manner. There is also the possibility of corresponding artifacts on the legs 46, 47 To apply material clips, for example to push them on, which are shaped in such a way that they engage positively and non-positively in the gripper groove 59 of the tool 35.

12 shows the receptacle 34 of the magazine 36. It has the two legs 47, each of which is curved in the shape of a partial circle and delimits a receiving space 62 between them, into which the tool 35 protrudes. On their inner sides facing each other, the legs 47 are provided with a protrusion 63 extending over their length, which tapers towards its free end and engages in the gripper groove 59 of the work tool 35 (Fig. 4). The projection 63 is designed to be complementary to the gripping groove 59, so that the tool 35 is securely held in the receptacle 34 in the z-direction.

The legs 47 protrude from a support body 64 with which the receptacle 34 is held in the magazine 36.

The legs 47 are curved so that they encompass the tool 35 over an angular range of slightly more than 180 °, so that the in the receptacle

34 tools picked up in the Y-direction can not come out automatically. By applying appropriate force and elastic deformation of the legs 46, 47, the tools can be removed from the receptacles 34,

45 are pulled out or pressed into the receptacles 34, 45.

The receptacle 45 of the plate magazine 41 is of the same design as the receptacle 34 of the magazine 36. The receptacle 45 is provided in relation to the receptacle 34 so that in the transfer position (FIG. 4) the legs 46, 47 of the two receptacles with their free ends are directed against each other. In this position, the legs 46, 47 of the two took on 34, 45 almost completely enclose the tool 35 and engage positively in the gripper groove 59 as described. This is the tool

35 in the transfer from the magazine 36 to the magazine 41 in the vertical direction (z-direction) performed properly. Only simple linear movements are necessary for the tool change described.

In particular in the case of series production of one type of window frame or window sash, only a few different tools are usually required to attach the corresponding window profiles to the elongated workpieces 1. This small number of tools 35 can be stored in the plate magazine 41 so that it is not necessary for the plate magazine 41 to first remove a corresponding tool from the magazine 36. The plate magazine 41 travels with the portal 22, whereby the tool change can be carried out in every x-direction and when moving the portal 22 in the x-direction and is therefore very time-saving.

The magazine 36 has a simple design. The magazine 36 is formed before geous as a linear magazine and extends in the x direction. The x-axis of the portal 22 can therefore also be used at the same time as a positioning unit for moving to the changing positions of the plate magazine 41.

The magazine 36 can have not only one level, as shown, but also two or more levels with corresponding storage spaces for the tools. By moving the plate magazine 41 in the z-direction and / or the magazine 36, the corresponding levels of such a magazine 36 can be easily approached.

The tools 35 can be accommodated in a space-saving manner in such a magazine 36 with several levels. The magazine 36 can be arranged along the system, as FIG. 1 shows by way of example. The magazine 36 can also be arranged on a wall. Access from the side is sufficient for manual loading of the magazine 36.

When the tool 35 is transferred from the magazine 36 to the plate magazine 41, the tool 35 is always supported axially in the gripper groove 59. This enables simple, fast and linear movements. A complicated gripping device is not necessary.

A tool change can be carried out during non-productive times, that is to say while, for example, the next workpiece 1 is being loaded or unloaded or transferred to another clamping device.

It makes sense to change the tools 35 from the magazine 36 when the next workpieces 1 are placed on the load. In addition, the tools 35 can also be changed during the initial fitting.

The plate magazine 41 is a small device that requires little installation space and is also characterized by its low weight.

13 shows by way of example that not only one tool 35, but also a tool assembly with two tools 35, for example, can be handled. The tool assembly 65 has a carrier 66, on the opposite sides of which two tools 35 in the form of drills are received.

A receiving head 67 protrudes vertically from the carrier 66 and extends perpendicularly to the two tools 35 and near its free end has the gripper groove 59 into which the legs 46 of the receptacle 45 and the legs 47 of the receptacle 34 can engage in the manner described nen.

In FIG. 13, the tool assembly 65 is received in the receptacle 34, the legs 47 of which engage in the gripper groove 59. The tool assembly 65 is pushed into the receptacle 45, the legs 46 of which lie opposite the free end of the legs 47 with their free ends.

The tool assembly 65 has a C-axis 68 which runs in the z-direction and around which the tool assembly 65 can be rotated, optionally with a of the two tools 35 to be able to work when the tool assembly 65 is inserted into the tool spindle 33.

The rotary drive 69 (FIG. 3) for the C-axis 68 of the tool assembly 65 is provided on the portal 22 in the area next to the tool spindle 33.

So that the tool assembly 65 is precisely defined in its angular position and can be adjusted by means of the rotary drive 69, it is provided on two diametrically opposite areas with a driver pin 70, 71 (FIG. 13), which is inserted through elongated holes 72, 73 in the receptacles 34,

45 protrude when their legs 46, 47 engage in the gripper groove 59. In the transfer position shown in FIG. 13, the two elongated holes 72, 73 are aligned diametrically opposite one another. The driver pin 70 lies in the elongated hole 72 because the legs 47 of the receptacle 34 engage in the gripper groove 59.

The opposite driver pin 71 is still in the area outside the elongated hole 73, since the legs 46 of the receptacle 45 are not yet in engagement with the gripper groove 59.

The two receptacles 34, 45 are designed in such a way that the driver pin 70 only emerges from the elongated hole 72 when the opposite driver pin 71 has already entered the elongated hole 73. In this way, it is ensured during the transfer process that the tool assembly 65 is fixed in its angular position, which is necessary for the subsequent exchange in the tool spindle 33.

Claims

Expectations

1. Device for transferring tools, tool assemblies and the like, in particular for processing workpieces made of wood, plastic, aluminum and the like, between two tool holders, characterized in that the tool holders (34, 45) are clamp-shaped and each leg (46 , 47) which at least positively engage in a gripper groove (59) of the tool (35, 65) and which are directed against one another in the transfer position, and that at least one transfer unit (51) with at least one transfer part (55) is provided , which is adjustable transversely to the axis of the tool (35, 65) (y-direction).

2. Device according to claim 1, characterized in that the transfer part (55) in an interface (58) of the tool (35, 65) can be clocked.

3. Apparatus according to claim 1 or 2, characterized in that the one tool holder (45) is part of a first magazine (41).

4. Apparatus according to claim 3, characterized in that the first magazine (41) is connected to at least one carrier (22) for a tool spindle (33) into which the tool (35, 65) can be clamped.

5. The device according to claim 4, characterized in that the carrier (22) parallel to the longitudinal direction direction of the workpieces (1) can be moved (x-direction).

6. Device according to one of claims 3 to 5, characterized in that the first magazine (41) can be moved transversely to the x direction (y direction).

7. Device according to one of claims 4 to 6, characterized in that the carrier (22) is designed as a portal.

8. Device according to one of claims 4 to 7, characterized in that the carrier (22) is a cross member (49) on which the first magazine (41) is arranged.

9. Device according to one of claims 3 to 108, characterized in that the first magazine (41) is a plate magazine rotatable about a ver vertical axis (z-direction).

10. Device according to one of claims 3 to 9, characterized in that the first magazine (41) is connected to a Schlit th (48) which can be moved along at least one guide (50) extending in the y-direction.

11. Device according to one of Claims 2 to 10, characterized in that the transfer part (55) of the transfer unit (51) can be adjusted in the z-direction between a rest position and an engagement position.

12. Device according to one of claims 4 to 11, characterized in that the first magazine (41) is adjustable in the z-direction with respect to the cross member (49).

13. Device according to one of claims 1 to 12, characterized in that the other tool holder (34) part a second magazine (36) which is adjustable in the z-direction.

14. Plant with a device according to one of claims 1 to 13.

15. A method for transferring tools, tool assemblies and the like, in which the tool (35, 65) from a tool holder (34) is moved into another tool holder (45) so that the tool (35, 65) during the transfer process at least one tool holder (34, 45) is held by the legs (46, 47).

16. The method according to claim 15, characterized in that the tool (35, 65) by means of a transfer part (55) of a transfer unit (51) is displaced transversely to the axis of the tool (35, 65), the transfer part (55) with the Tool (35, 65) is brought into engagement and then moved transversely to the axis of the tool (35, 65) in the y-direction.