Device for checking the position of a workpiece

Abstract

Device (1) for position control of a workpiece, which is designed to be mirror-symmetrical to a mirror plane spanned by a central vertical axis (MHA) and a central longitudinal axis (MLA) and comprises a holder (2) and a sensing device (10) and a sensor assembly (9), wherein the sensing device (10) is movably mounted in the holder (2) and is movable between a starting position and a working position, wherein a movement kinematics of the sensing device (10) is defined by at least one guide track (18) on the sensing device (10) and at least one guide device (3) on the holder (2), which interacts with the at least one guide track (18), and wherein the sensor assembly (9) detects the position of the sensing device (10).

Description

[0001] The invention relates to a device for checking the position of a workpiece. Furthermore, the invention relates to a forming tool system with such a device for checking the position of a workpiece.

[0002] Devices for checking the position of a workpiece, which are used, for example, in forming tool systems, are known in numerous variations. The workpiece can be, in particular, a thin-walled component made of sheet metal, such as a circuit board. For example, in drawing tools for body parts, such devices for checking the position of a workpiece are used to ensure the correct orientation of the circuit board before the start of a press stroke.

[0003] From DE 102 52 150 B4, a guidance device for positioning at least one workpiece is known, which includes a workpiece position control device designed as an optical sensor unit for non-contact workpiece position control and additionally as a centering and fixing unit. The sensor element has an L-shaped workpiece contact side with which a sensor detection line forms a triangle.

[0004] From DE 10 2009 019 528 A1, a guide for positioning a workpiece is known, comprising a base body with a guide surface and a linear workpiece contact side on which an inductive sensor for non-contact workpiece position control is arranged. The inductive sensor is integrated into the base body and is flush with the workpiece contact side.

[0005] From DE 10 2019 217 918 B4, a guide device for positioning blanks for a forming tool is known, comprising a guide having a chamfered positioning surface. The positioning surface is designed so that a circumferential edge of a blank can be positioned in a transverse direction by contact with the positioning surface. The guide device comprises a housing module on which the guide is mounted so as to be linearly displaceable in the transverse direction. The housing module has a spring system that pre-tensions the guide in the transverse direction. The guide comprises a guide bracket and a mounting plate. The guide bracket has the positioning surface, and the mounting plate is designed to be guided linearly in the housing module.

[0006] From DE 10 2015 008 939 A1, a positioning device for a forming tool is known, comprising a guide device for positioning a semi-finished product in the forming tool and an inductive proximity sensor arranged on the guide device for detecting the position of the semi-finished product. The guide device has a contact element pivotable into a position that triggers the inductive proximity sensor, with a contact surface for the semi-finished product, which is guided in a transverse direction by means of a guide arranged opposite a pivot axis of the contact element.

[0007] The invention is based on the objective of providing a device for position control of a workpiece and a forming tool system with such a device for position control of a workpiece, which can be manufactured simply and cost-effectively while offering high functionality.

[0008] This problem is solved by a device for position control of a workpiece with the features of claim 1 and by a forming tool system with the features of claim 12. Advantageous embodiments with expedient further developments of the invention are specified in the dependent claims.

[0009] To provide a workpiece position control device that is simple and cost-effective to manufacture while offering high functionality, the device is designed with mirror symmetry and comprises a holder, a sensing element, and a sensor assembly. The sensing element is movably mounted in the holder and can be moved between a starting position and a working position. The sensing element's motion kinematics are defined by at least one guide track on the sensing element and at least one guide element on the holder, which interacts with the guide track. The sensor assembly detects the position of the sensing element.

[0010] Furthermore, a forming tool system with a workpiece holder and a device for position control of a workpiece inserted into the workpiece holder is proposed.

[0011] The device is designed to be mirror-symmetrical about a mirror plane defined by a central vertical axis and a central longitudinal axis. This mirror-symmetrical design reduces the number of variants required, as the same device can be used for position control of both "left" and "right" workpieces. Furthermore, the mirror-symmetrical design allows for a reduction in width, thus optimizing installation space. The use of the movable probe enables a longer contact area against which the workpiece can be detected when inserted. This allows the inserted workpiece to be detected even if it falls within a predefined tolerance range outside its optimal insertion position.The tolerance range within which the inserted workpiece can still be detected can be defined, in particular, by ensuring that the corresponding position of the detected workpiece still allows for flawless forming in the associated forming tool system. Advantageously, the motion kinematics of the probe can be implemented simply and cost-effectively as a maintenance-free mechanism, for example, by means of at least one guide track on the probe and at least one guide device on the holder, using rolling bearings or needle roller bushings.

[0012] In this context, a sensor assembly is understood to be an assembly comprising at least one sensor element that directly or indirectly detects a physical quantity or a change in a physical quantity and preferably converts it into an electrical sensor signal. Embodiments of the device according to the invention for position control of a workpiece preferably employ an inductive sensor element capable of detecting a magnetic field or a change in a magnetic field.

[0013] In an advantageous embodiment of the device, the push-button assembly can comprise a tactile strip into which at least one guide track is integrated and which has an actuating lug. In the push-button assembly's initial position, the actuating lug can be located outside the detection range of the sensor assembly, and in the push-button assembly's operating position, it can be located within the detection range of the sensor assembly. When an inductive sensor element is used in the sensor assembly, the actuating lug is located outside or at the edge of the magnetic field detected by the inductive sensor element in the initial position. In the operating position, the actuating lug changes the magnetic field detected by the inductive sensor element, which detects this change in the magnetic field and outputs a corresponding signal.

[0014] In a further advantageous embodiment of the device, a contact element can be designed as a wire-bent part and have a contact surface and an insertion ramp for the workpiece to be inspected, and can be arranged on a circumferential section of the sensing strip facing away from the actuating nose. Here, a first end region of the contact element can be bent around a rounded first end region of the sensing strip, forming an undercut. The wire-bent design advantageously allows for chipless manufacturing without heat treatment. The wire-bent contact element can, for example, be fixed to the sensing strip by spot welds.

[0015] In a further advantageous embodiment of the device, the sensing strip can be arranged in a stacked configuration between two guide rails, each of which also incorporates at least one guide track. Furthermore, each of the two guide rails can have two guide lugs for guiding the contact element, which is designed as a wire bending part. Here, the first end region of the contact element, bent around the rounded end region of the sensing strip, can be guided between two first guide lugs of the two guide rails. A second end region of the contact element can be guided between two second guide lugs of the two guide rails. The guide lugs prevent the contact element from slipping.

[0016] In a further advantageous embodiment of the device, the holder can comprise two parallel side parts and a support part to which the two side parts are connected. The two parallel side parts can be connected to each other via at least one clamp and at least one guide device. The sensing device can be arranged between the two side parts such that the at least one guide device is guided in the at least one guide track. Furthermore, the sensing strip and the two guide strips of the sensing device, as well as the two side parts, the support part, and the at least one clamp of the holder, can each be laser-cut. The at least one clamp can be bent after the laser cutting process.The laser-cut parts can be manufactured fully automatically and cost-effectively in high volumes and, for example, deburred fully automatically using vibratory finishing. The production of the bent parts is possible on both CNC bending machines and with a simple bending fixture. The use of milling or drilling machines is not necessary. Furthermore, the laser-cut parts can be quickly joined without a fixture using clamping sleeves and blind rivets.

[0017] In a further advantageous embodiment of the device, the guide device can comprise at least one clamping sleeve which connects the two side parts together, a spacer sleeve pushed onto the clamping sleeve and at least one needle sleeve pushed onto the spacer sleeve, which can roll in the at least one guide track of the sensing device.

[0018] In a further advantageous embodiment of the device, the two side parts can each have an L-shape. The support part can have at least one first clamp connecting the first two legs of the two side parts. End regions of the second legs of the two side parts can be connected by a second clamp. Furthermore, the sensor assembly can be attached to the holding device by a third clamp connecting the two side parts. Additionally, a reset device for the push button can have a spring element and be attached to the holding device by a fourth clamp connecting the two side parts, such that the spring element acts on the push button.

[0019] The individual components of the inventive device for position control of a workpiece do not require any fits and can be easily assembled using cost-effective purchased parts, such as blind rivets and clamping sleeves. Furthermore, embodiments of the inventive device enable function-, space-, and cost-optimized position control of a workpiece and can be easily adapted to different workpieces to be detected by changing the dimensions of the laser components. In addition, embodiments of the inventive device for position control of a workpiece can form the basis for special designs, such as hinged guides with a control function or guides with a guide plate.

[0020] The advantages and preferred embodiments described for the device according to the invention for position control of a workpiece also apply to the forming tool system according to the invention.

[0021] The features and combinations of features mentioned above in the description, as well as those subsequently mentioned in the figure description and / or shown in the figures alone, can be used not only in the combinations specified, but also in other combinations or on their own, without departing from the scope of the invention. Thus, embodiments that are not explicitly shown or explained in the figures, but which can be derived and generated from the explained embodiments by separate combinations of features, are also to be considered as encompassed and disclosed by the invention.

[0022] An embodiment of the invention is shown in the drawings and is explained in more detail in the following description. In the drawings, identical reference numerals denote components or elements that perform the same or analogous functions. The drawings show: Fig. 1 a schematic side view of an embodiment of a device according to the invention for position control of a workpiece in a starting position; Fig. 2 a schematic front view of the device according to the invention for position control of a workpiece made of Fig. 1; Fig. 3 a schematic sectional view along the section line III - III from Fig. 1; and Fig. 4 a schematic sectional view along the section line IV - IV from Fig. 2.

[0023] As from Fig. As can be seen in Figures 1 to 4, the illustrated embodiment of a mirror-symmetrical device 1 according to the invention for position control of a workpiece comprises a holder 2, a probe 10, and a sensor assembly 9. The probe 10 is movably mounted in the holder 2 and can be moved between a starting position and a working position. The motion kinematics of the probe 10 are defined by at least one guide track 18, 18A, 18B on the probe 10 and at least one guide element 3, 3A, 3B on the holder 2, which interacts with the at least one guide track 18, 18A, 18B. The sensor assembly 9 detects the position of the probe 10.

[0024] In the illustrated embodiment, the device 1 is designed to be mirror-symmetrical about a mirror plane, which is spanned by a central vertical axis MHA and a central longitudinal axis MLA.

[0025] Embodiments of the device 1 according to the invention for checking the position of a workpiece are generally used in a forming tool (not shown) with a workpiece holder. The device 1 according to the invention checks the position of a workpiece inserted into the workpiece holder. The forming tool is preferably a drawing tool for body parts into whose workpiece holder a thin-walled sheet metal component, such as a circuit board, is inserted as the workpiece.

[0026] As from Fig. As can be seen further in Figures 1 to 4, the keying device 10 in the illustrated embodiment comprises an L-shaped keying strip 12 into which at least one guide track 18, 18A, 18B is integrated and which has an actuating lug 19. A circular segment-shaped first guide track 18A is integrated into a free first end region 12.1 of a first leg of the L-shaped keying strip 12. The actuating lug 19 is formed on a free second end region 12.2 of a second leg of the L-shaped keying strip 12. A circular segment-shaped second guide track 18B is integrated into a connecting region 12.3 of the two legs of the L-shaped keying strip 12. As can be seen in particular from Figures 1 to 4. Fig. As can be seen further in Figure 3, the actuating nose 19 is located outside the detection range of the sensor assembly 9 in the initial position of the button device 10. Fig. As can be seen further in section 3, the actuating nose 19 is arranged in its working position shown in dashed lines within the detection area of ​​the sensor assembly 9.

[0027] As from Fig. As can be seen in Figures 1 to 4, a contact element 16 is designed as a wire bending part 16A and has a contact surface 16.1 and an insertion chamfer 16.2 for the workpiece to be inspected (not shown). The contact element 16 is arranged on a circumferential section of the sensing strip 12 facing away from the actuating nose 19. Here, a first end region 16.3 of the contact element 16 is bent around the rounded first end region 12.1 of the sensing strip 12, which forms an undercut. At the connection region 12.3 of the two legs of the sensing strip 12, a second end region 16.4 of the contact element 16 projects beyond the sensing strip 12.

[0028] As from Fig. As can be seen in Figures 1 to 4, the tactile strip 12 in the illustrated embodiment of the keying device 10 is arranged in a stacked configuration between two L-shaped guide rails 14, 14A, 14B, each of which also incorporates a circular segment-shaped first guide track 18A and a circular segment-shaped second guide track 18B. The two circular segment-shaped first guide tracks 18A of the guide rails 14A, 14B are arranged such that a circular segment-shaped first guide track 18A of a first guide rail 14A and a circular segment-shaped first guide track 18A of a second guide rail 14B are aligned with each other and overlap the circular segment-shaped first guide track 18A of the tactile strip 12. This means that the length and width of the guide tracks 18, 18A, 18B incorporated into the two guide rails 14, 14A, 14B are greater than the guide tracks 18, 18A, 18B incorporated into the tactile strip 12. The rounded first end region 12.The tactile strip 12 projects beyond the two guide strips 14, 14A, 14B, while the actuating lug 19 is arranged between the two guide strips 14, 14A, 14B. The two guide strips 14, 14A, 14B each have two guide lugs 14.1, 14.2. The first end region 16.3 of the contact element 16, which is bent around the rounded first end region 12.1 of the tactile strip 12, is guided between two first guide lugs 14.1 of the two guide strips 14, and the projecting second end region 16.4 of the contact element 16 is guided between two second guide lugs 14.2 of the two guide strips 14.

[0029] The keypad 12 and the two guide rails 14, 14A, 14B of the keypad 10 are each manufactured as laser-cut parts, which are connected to each other using cost-effective standard parts, such as blind rivets. During assembly of the keypad 10, the keypad 12 is first attached to the first guide rail 14A, preferably using blind rivets. Then, the contact element 16, manufactured as a wire-bent part 16A, is attached to the keypad 12, with the bent first end section 16.3 of the contact element 16 being slid onto the rounded first end section 12.1 of the keypad 12. The keypad 12 can also be secured to the guide rail 14A by means of spot welds. Finally, the second guide rail 14B is attached to the keypad 12, preferably using blind rivets.

[0030] As from Fig. As can be seen further in Figures 1 to 4, the holder 2 comprises two parallel side parts 4, 4A, 4B and a support part 5 to which the two side parts 4, 4A, 4B are connected. The two parallel side parts 4, 4A, 4B are connected to each other via at least one clamp 5.1, 5.2, 7.2, 8, 9.3 and at least one guide device 3, 3A, 3B. The push button 10 is arranged between the two side parts 4, 4A, 4B such that the at least one guide device 3, 3A, 3B is guided in the at least one guide track 18, 18A, 18B. In the illustrated embodiment, the holder 2 comprises two guide devices 3, 3A, 3B, wherein a first guide device 3A is guided in the first guide track 18A of the sensing device 10 and a second guide device 3B is guided in the second guide track 18B of the sensing device 10.

[0031] As especially from Fig. As can be seen in Figure 3, the two guide devices 3, 3A, 3B each comprise at least one clamping sleeve 3.1, which connects the two side parts 4, 4A, 4B to each other, a spacer sleeve 3.2 pushed onto the clamping sleeve 3.1, which determines the distance between the two side parts 4, 4A, 4B, and two needle sleeves 3.3 pushed onto the spacer sleeve 3.2, which roll in the corresponding guide track 18, 18A, 18B of the sensing device 10. Here, the outer diameters of the spacer sleeves 3.2 and needle sleeves 3.3 and the width of the guide tracks 18, 18A, 18B integrated into the stylus strip 12 are matched such that the spacer sleeves 3.2 of the guide elements 3, 3A, 3B extend through the guide tracks 18A of the stylus strip 12, while the needle sleeves 3.3 rest against the stylus strip 12. Since the guide tracks 18, 18A, 18B of the guide strips 14, 14A, 14B are wider than the guide tracks 18, 18A, 18B of the stylus strip 12, the spacer sleeves 3.2 extend through them.2 also the guide tracks 18, 18A, 18B of the guide rails 14, 14A, 14B. The outer diameters of the needle sleeves 3.3 and the width of the guide tracks 18, 18A, 18B integrated into the guide rails 14, 14A, 14B are matched such that the needle sleeves 3.3 can roll in the guide tracks 18, 18A, 18B of the guide rails 14, 14A, 14B. This means that a first needle sleeve 3.3 of the first guide device 3A rolls in the first guide track 18A of the first guide rail 14A, and a second needle sleeve 3.3 of the first guide device 3A rolls in the first guide track 18A of the second guide rail 14B. A first needle sleeve 3.3 of the second guide device 3B rolls in the second guide track 18B of the first guide rail 14A and a second needle sleeve 3.3 of the second guide device 3B rolls in the second guide track 18B of the second guide rail 14B.

[0032] In the illustrated embodiment, the two side parts 4, 4A, 4B each have an L-shape. The support part 5 also has two first clamps 5.1, 5.2, which connect the first legs of the two L-shaped side parts 4, 4A, 4B, and two elongated holes (not specified) through which fastening elements 6, such as screws, can be inserted to attach the support part 5, and thus the device 1 for position control of a workpiece, to the workpiece holder. The end regions of the second legs of the two side parts 4, 4A, 4B are connected to each other by a second clamp 8. Furthermore, the sensor assembly 9 is attached to the holding device 2 by a third clamp 9.3, which connects the two side parts 4, 4A, 4B. The sensor assembly 9 comprises an inductive sensor element 9.1 and a connecting cable 9.2 for the sensor element 9.1.The sensor assembly 9 is held in an opening of the third clamp 9.3 by means of unspecified screw connections. A reset device 7 for the push button 10 has a spring element 7.1 and is attached to the holding device 2 by means of a fourth clamp 7.2, which connects the two side parts 4, 4A, 4B, such that the spring element 7.1 acts on the push button 10. As shown in... Fig. 1 and Fig. As can be seen further in Figure 4, the return device 7 in the illustrated embodiment comprises a spring element 7.1 designed as a helical spring 7.1A and a screw 7.3, which is guided through an opening in the fourth bracket 7.2 and secured by a nut 7.4. The helical spring 7.1A is arranged between the nut 7.4 and an unspecified guide lug of the sensing strip 12 and generates a return force which moves the sensing device 10 from the working position to the starting position when no workpiece is inserted.

[0033] The two side parts 4, 4A, 4B and the support part 5 as well as the bracket clamps 5.1, 5.2, 7.2, 8, 9.3 of the holder 2 are each designed as laser parts, with the bracket clamps 5.1, 5.2, 7.2, 8, 9.3 being bent after the laser cutting process.

[0034] During the assembly of the illustrated embodiment of the device 1 according to the invention for position control of a workpiece, the clamping sleeves 3.1 of the two guide devices 3, 3A, 3B are first inserted into corresponding openings of a first side part 4A. Then, the spacer sleeves 3.2 of the two guide devices 3, 3A, 3B are each pushed onto the clamping sleeves 3.1. Finally, the first needle sleeves 3.3 of the two guide devices 3, 3A, 3B are pushed onto the respective spacer sleeve 3.2. The assembled sensing device 10 is now installed such that the clamping sleeves 3.1 and the spacer sleeves 3.2 of the two guide devices 3, 3A, 3B engage the corresponding guide tracks 18, 18A, 18B of the sensing device 10 and the first needle sleeves 3.3 each rest in the corresponding guide track 18, 18A, 18B of the first guide rail 14A of the sensing device 10. Then the second needle sleeves 3.3 of the two guide devices 3, 3A, 3B are pushed onto the respective spacer sleeve 3.2 such that the second needle sleeves 3.3 each rest in the corresponding guide track 18, 18A, 18B of the second guide rail 14B of the sensing device 10. Then a second side part 4B is installed by inserting the clamping sleeves 3.1 of the two guide devices 3, 3A, 3B into corresponding openings of the second side part 4B. Subsequently, the carrier part 5 with the first two clamps 5.1, 5.2, the second clamp 8, the sensor assembly 9 with the third clamp 9.3 and the reset device 7 for the push button 10 with the fourth clamp 7.2 are attached to the holding device 2 by fastening the bent ends of the clamps 5.1, 5.2, 7.2, 8, 9.3 preferably by means of blind rivets to the two side parts 4, 4A, 4B.

[0035] The following refers to Fig. 1 and Fig.3 describes the functioning of the illustrated embodiment of the device 1 according to the invention for position control of a workpiece. Before a workpiece is inserted, the sensing device 10 is in its initial position, in which the contact surface 16.1 and the insertion ramp 16.2 of the contact element 16 project beyond the holder 2 and into the tool holder. The sensing device 10 is then moved from its initial position to its working position when a workpiece is inserted into the workpiece holder and is moved from the insertion ramp 16.2 towards the contact surface 16.1. As a result, the sensing device 10 is guided by the guide device 3, 3A, 3B, which interacts with the two guide tracks 18, 18A, 18B, and moved by the inserted workpiece against the force of the spring element 7.1 of the return device 7 towards the sensor assembly 9.This movement of the sensing device 10 moves the actuating nose 19 of the sensing device 10 into the detection range of the inductive sensor element 9.1, so that the inserted workpiece is detected. The workpiece can be positioned at any point on the contact surface 16.1 of the contact element 16 between the insertion chamfer 16.2 and the second end region 16.4. This significantly increases the area of ​​the workpiece holder controlled by the inductive sensor element 9.1. When the workpiece is removed from the workpiece holder, the return mechanism 7 moves the sensing device 10 from its working position back to its starting position. REFERENCE MARK LIST 1 Device for checking the position of a workpiece 2 brackets 3, 3A, 3B Guide device 3.1 Tension sleeve 3.2 Spacer sleeve 3.3 Needle sleeve 4, 4A, 4B Side panel 5 Carrier part 5.1, 5.2 Iron clamp 6 Fastening element 7. Reset device 7.1 Spring element 7.1A Coil spring 7.2 Clamp 7.3 Screw 7.4 Mother 8 Connecting clamp 9 Sensor assembly 9.1 Sensor element 9.2 Connection cable 9.3 Iron clamp 10 Key setup 12 Keypad 12.1 first end area 12.2 second end area 12.3 Connection area 14, 14A, 14B Guide rail 14.1, 14.2 Leading nose 16 Contact element 16A Wire bending part 16.1 Contact area 16.2 Lead-in chamfer 16.3 first end area 16.4 second end area 18, 18A, 18B Guideway 19 Actuating nose MHA Mid-High Axis MLA Central longitudinal axis x Longitudinal direction y transverse direction z Upward direction

Claims

[1] Device (1) for position control of a workpiece, which is designed in a mirror-symmetrical manner with respect to a mirror plane spanned by a central vertical axis (MHA) and a central longitudinal axis (MLA) and comprises a holder (2) and a sensing device (10) and a sensor assembly (9), wherein the sensing device (10) is movably mounted in the holder (2) and is movable between a starting position and a working position, wherein a movement kinematics of the sensing device (10) is defined by at least one guide track (18) on the sensing device (10) and at least one guide device (3) on the holder (2), which interacts with the at least one guide track (18), and wherein the sensor assembly (9) detects the position of the sensing device (10). [2] Device (1) according to claim 1, characterized by, that the keying device (10) comprises a keying strip (12) into which the at least one guide track (18) is inserted and which has an actuating nose (19), wherein the actuating nose (19) is arranged outside a detection area of ​​the sensor assembly (9) in the initial position of the keying device (10) and in the detection area of ​​the sensor assembly (9) in the working position of the keying device (10). [3] Device (1) according to claim 2, characterized by , that a contact element (16) is designed as a wire bending part (16A) and has a contact surface (16.1) and an insertion ramp (16.2) for the workpiece to be inspected and is arranged on a circumferential section of the sensing strip (12) facing away from the actuating nose (19), wherein a first end region (16.3) of the contact element (16) is bent around a rounded first end region (12.1) of the sensing strip (12), which forms an undercut. [4] Device (1) according to claim 2 or 3, characterized by , that the tactile strip (12) is arranged in a stacked construction between two guide strips (14), into each of which at least one guide track (18) is inserted. [5] Device (1) according to claims 3 and 4, characterized by , that the two guide strips (14) each have two guide lugs (14.1, 14.2), wherein the first end region (16.3) of the contact element (16) bent around the rounded end region (12.1) of the tactile strip (12) is guided between two first guide lugs (14.1) of the two guide strips (14) and a second end region (16.4) of the contact element (16) is guided between two second guide lugs (14.2) of the two guide strips (14). [6] Device (1) according to any one of claims 1 to 5, characterized by, that the holder (2) comprises two parallel side parts (4) and a support part (5) to which the two side parts (4) are connected, wherein the two parallel side parts (4) are connected to each other via at least one clamp (5.1, 5.2, 7.2, 8, 9.3) and the at least one guide device (3), wherein the push button (10) is arranged between the two side parts (4) such that the at least one guide device (3) is guided in the at least one guide track (18). [7] Device (1) according to claims 4 and 6, characterized by , that the tactile strip (12) and the two guide strips (14) of the tactile device (10) and the two side parts (4) and the support part (5) and the at least one clamp (5.1, 5.2, 7.2, 8, 9.3) of the holder (2) are each designed as laser parts, wherein the at least one clamp (5.1, 5.2, 7.2, 8, 9.3) is bent after the laser cutting process. [8] Device (1) according to claim 6 or 7, characterized by , that the guide device (3) comprises at least one clamping sleeve (3.1) which connects the two side parts (4) together, a spacer sleeve (3.2) pushed onto the clamping sleeve (3.1) and at least one needle sleeve (3.3) pushed onto the spacer sleeve (3.2), which rolls in the at least one guide track (18) of the sensing device (10). [9] Device (1) according to any one of claims 6 to 8, characterized by , that the two side parts (4) each have an L-shape, wherein the support part (5) has at least one first bracket (5.1, 5.2) which connects two first legs of the two side parts (4) together, wherein end regions of second legs of the two side parts (4) are connected to each other via a second bracket (8). [10] Device (1) according to any one of claims 6 to 9, characterized by, that the sensor assembly (9) is attached to the holding device (2) via a third clamp (9.3) which connects the two side parts (4) together. [11] Device (1) according to any one of claims 6 to 10, characterized by , that a reset device (7) for the keying device (10) has a spring element (7.1) and is attached to the holding device (2) via a fourth clamp (7.2) which connects the two side parts (4) together, such that the spring element (7.1) acts on the keying device (10). [12] Forming tool system with a workpiece holder and a device (1) for position control of a workpiece inserted into the workpiece holder, which is designed according to one of claims 1 to 11.

Images