Holding device for a workpiece, in particular a plate-shaped one, workpiece support with the holding device

Abstract

Holding device (10) for a workpiece (12), in particular a plate-shaped one, with at least one holding means (14) and a support arrangement (16) which supports the at least one holding means (14) and which can be connected to a workpiece support (18).

Description

Background of the invention

[0001] The invention relates to a holding device for a workpiece, in particular a plate-shaped one, and a workpiece support for a workpiece, in particular a plate-shaped one, with the holding device.

[0002] The applicant is aware of an end-face stop for plate-shaped workpieces from practical experience. The end-face stop is attached to a workpiece support in the form of a pallet on a machine tool and serves to position the plate-shaped workpieces, such as sheet metal panels, on the workpiece support of the machine tool. Such machine tools are often equipped with pallet changers that transport the workpiece support with a workpiece placed on it into the machine tool.

[0003] During transport of the workpiece into the machining center, acceleration and / or deceleration processes can cause the workpiece to slip on the workpiece support. Such mispositioning inevitably leads to defectively machined parts, resulting in scrap and reducing the efficiency of the manufacturing process. Object of the invention

[0004] The object of the invention is to provide a device for a workpiece, in particular a plate-shaped one, the use of which in a manufacturing process reduces its rejects and increases process efficiency. Description of the invention

[0005] This problem is solved according to the invention by a holding device according to claim 1 and a workpiece support according to claim 12.

[0006] According to the invention, a holding device is provided for a workpiece, in particular a plate-shaped one. The holding device comprises at least one holding element and a support arrangement. The support arrangement carries the at least one holding element. The support arrangement can be connected to a workpiece support.

[0007] By providing a holding device with at least one holding element, slippage of the workpiece on a workpiece support during transport due to acceleration and deceleration processes is effectively prevented. According to the invention, this prevents mispositioning of the workpiece in the machine tool, thereby reducing the number of defective parts. As a result, scrap is minimized and the efficiency of the manufacturing process is increased.

[0008] In one embodiment, the workpiece is provided to have or be made of a metallic material. Preferably, the metallic material is magnetic. The metallic material is, in particular, iron, nickel, and / or cobalt.

[0009] In one embodiment, it is provided that at least one holding means is designed as a clamping device or electromagnet.

[0010] In a preferred further embodiment, the at least one holding element is designed as at least one magnet. In particular, the at least one magnet is designed as a permanent magnet. This eliminates the need for an external power supply, simplifying the design.

[0011] In another embodiment, the support arrangement is designed to be releasably connected to the workpiece support. This allows for flexible mounting on the workpiece support, easy retrofitting to existing workpiece supports, and quick replacement of the holding device. "Releasable" in this context means that the support arrangement can be removed from the workpiece support without damaging the holding device and / or the workpiece support.

[0012] In a further embodiment, at least one magnet is releasably held from the carrying arrangement. This facilitates the replacement of individual magnets in case of damage. "Releasable" here means that the magnet can be removed from the carrying arrangement without destroying the carrying arrangement and / or the magnet.

[0013] In a further embodiment, the support arrangement comprises at least one pair of retaining elements between which the at least one magnet is clamped. Such a clamping arrangement provides a secure fastening of the magnet, enabling easy assembly and disassembly.

[0014] In another embodiment, several spaced-apart pairs of holding elements and several magnets are provided, each magnet being clamped between a pair of holding elements. The distribution of multiple magnets along the device ensures a holding force across the entire end face of the workpiece.

[0015] In a further embodiment, the support arrangement includes a strip to which the pairs of retaining elements are connected. The strip serves as a stable support element for all pairs of retaining elements and ensures precise alignment of the magnets.

[0016] In a further embodiment, the support arrangement is provided with at least one connecting part that is attached to the rail and can be connected to the workpiece support. The connecting part forms a defined interface to the workpiece support and thus simplifies the installation of the entire holding device.

[0017] In a further embodiment, the support arrangement includes at least one spacer element positioned between the at least one connecting element and the strip. This spacer element enables precise adjustment of the magnets relative to the workpiece support, ensuring optimal positioning of the plate-shaped workpiece on the support.

[0018] In another embodiment, several spacers and several spaced-apart connecting parts are provided, each of which is connected to the strip via an intermediate spacer. Multiple fastening points ensure a particularly stable and robust mounting of the holding device to the tool rest.

[0019] In a further embodiment, at least one of the following components is designed in a plate-like form: the retaining part, the strip, the spacer, and / or the connecting part. Preferably, all of these components are designed in a plate-like form. The use of plate-like components enables simple and cost-effective manufacturing, for example, by laser cutting from sheet metal.

[0020] The invention also relates to a workpiece support for a workpiece, in particular a plate-shaped one. The workpiece support has the holding device described above and / or below. The holding device is connected to the workpiece support at an edge region.

[0021] The integrated holding device on the workpiece support effectively prevents workpieces from slipping during transport. Such slippage can occur, for example, due to acceleration and / or deceleration of the workpiece support. This ensures that the workpiece's position on the support remains unchanged during transport, resulting in fewer defective parts. Consequently, scrap is reduced and the efficiency of the manufacturing process is increased.

[0022] In one embodiment, the support arrangement is configured such that at least one magnet is positioned on an end face of a plate-shaped workpiece placed on the workpiece support. This lateral arrangement of the magnets is particularly advantageous because it generates a high holding force against lateral slippage, while simultaneously allowing the workpiece to be removed with minimal effort by a vertical movement.

[0023] In another embodiment, at least one support element is provided for supporting an edge region of the workpiece. This support element ensures that the workpiece lies flat and stable, thus preventing vibrations and tilting of the workpiece during transport and machining.

[0024] In a further embodiment, at least one end stop is provided for the workpiece. In particular, it is provided that the at least one end stop and a holding element of the at least one pair of holding elements are flush with each other. The end stop serves for the precise positioning of the workpiece, and the flush alignment with the holding element creates a smooth, continuous contact surface.

[0025] In one embodiment, the workpiece support is designed as a pallet or as a workpiece table. Detailed description of the invention and drawing Fig. Figure 1 shows, in a perspective view from below, the holding device according to the invention; Fig. 2 shows, in one view, the holding device made of Fig. 1; Fig. Figure 3 shows, in a side view, the holding device made of Fig. 1; Fig. Figure 4 shows, in a side view, a device with a holding device made of Fig. 1 provided tool rest; Fig. 5 shows the tool rest made of Fig. 4 in the area designated there as B; Fig. 6 shows, in a section along the section line CC from Fig. 4, the tool rest made of Fig. 4; and

[0026] Fig. Figures 1 to 3 show the holding device 10 according to the invention for a plate-shaped workpiece 12, in particular in the form of a sheet metal part. The holding device 10 has several holding means 14 in the form of magnets 14 and a support arrangement 16. The support arrangement 16 carries the magnets 14 in one end region and is releasably connected to a workpiece support 18 at its other end region.

[0027] The magnets 14 are designed as permanent magnets 14.

[0028] The support arrangement 16 has several pairs of retaining elements 20. Each pair of retaining elements 20 consists of two spaced-apart, plate-shaped retaining elements 22. A magnet 14 is clamped between each pair of retaining elements 20. By means of this clamping, the respective magnet 14 is releasably connected to the support arrangement 16.

[0029] The support arrangement 16 further comprises a plate-shaped strip 24 to which the several pairs of retaining elements 20 are connected, in particular screwed together by means of at least one bolt 26. One retaining element 22 of a pair of retaining elements 20 rests against one side of the strip 24, and another retaining element 22 of the same pair rests against the other side of the strip 24. The retaining elements 22 of each pair of retaining elements 20 extend away from the strip 24 and form a receiving space between them for a magnet 14. Each magnet 14 is designed as a cuboid. Each magnet 14 is arranged between a pair of retaining elements 20 and rests against the strip 24 with one of its sides.

[0030] Furthermore, the support arrangement 16 has several plate-shaped connecting parts 28, which are spaced apart from each other, connected to the strip 24, in particular screwed on by means of at least one bolt 26, and which can be connected to the workpiece support 18, in particular screwed on by means of at least one bolt 26.

[0031] How Fig. Figure 3 shows that a plate-shaped spacer 30 is arranged between each connecting part 28 and the strip 24.

[0032] Fig.Figures 4 to 6 show the workpiece support 18 in the form of a pallet with the holding device 10. The plate-shaped workpiece 12 is arranged on the workpiece support 18 and, due to the magnetic force of the magnets 14, rests with its end face against one of the holding elements 22 of the holding device 10 and is held in place. The holding device 10 is connected to the workpiece support 18 at an edge region by its connecting elements 28. A support element 32 is provided for supporting an edge region of the workpiece 12. The holding device 10 projects vertically beyond the support element 32. Reference symbol list 10 Holding device 12 workpieces 14 holding means / magnet / permanent magnet 16 Carrying arrangement 18 workpiece support 20 pairs of retaining parts 22 Holding part 24 bar 26 bolts 28 Connection part 30 spacer 32 edition

Claims

[1] Holding device (10) for a workpiece (12), in particular a plate-shaped one, with at least one holding means (14) and a support arrangement (16) which supports the at least one holding means (14) and which can be connected to a workpiece support (18). [2] Holding device (10) according to claim 1, characterized by , that the at least one holding means (14) is designed as at least one magnet (14), in particular wherein the at least one magnet (14) is designed as a permanent magnet (14). [3] Holding device (10) according to claim 1 or 2, characterized by , that the carrying arrangement (16) can be releasably connected to the workpiece support (18). [4] Holding device (10) according to one of claims 2 or 3, characterized by , that at least one magnet (14) is releasably held by the support arrangement (16). [5] Holding device (10) according to one of claims 2 to 4, characterized by, that the carrying arrangement (16) has at least one pair of retaining parts (20) between which the at least one magnet (14) is clamped. [6] Holding device (10) according to claim 5, characterized by , that several spaced-apart pairs of holding parts (20) and several magnets (14) are provided, each of which is clamped between a pair of holding parts (20). [7] Holding device (10) according to claim 6, characterized by , that the carrying arrangement (16) has a strip (24) to which the retaining part pairs (20) are connected. [8] Holding device (10) according to claim 7, characterized by , that the carrying arrangement (16) has at least one connecting part (28) which is connected to the strip (24) and which can be connected to the workpiece support (18). [9] Holding device (10) according to claim 8, characterized by, that the carrying arrangement (16) has at least one spacer (30) which is arranged between the at least one connecting part (28) and the strip (24). [10] Holding device (10) according to claim 9, characterized by , that several spacer parts (30) and several spaced-apart connecting parts (28) are provided, each of which is connected to the strip (24) by means of an intermediate spacer part (30). [11] Holding device (10) according to any one of claims 5 to 10, characterized by , that at least one of the following components is plate-shaped: the retaining part (22), the strip (24), the spacer part (30) and / or the connecting part (28). [12] Workpiece support (18) for a workpiece (12), in particular a plate-shaped one, with a holding device (10) according to one of the preceding claims, which is connected to the workpiece support (18) in an edge region of the workpiece support (18). [13] Workpiece support (18) according to claim 12, characterized by , that the support arrangement (16) is arranged such that the at least one magnet (14) is arranged on an end face of the plate-shaped workpiece (12) when the plate-shaped workpiece (12) is arranged on the workpiece support (18). [14] Workpiece support (18) according to claim 12 or 13, characterized by , that at least one support part (32) is provided for supporting an edge area of ​​the workpiece (12).

Images