Flexible positioning tool

Abstract

The utility model discloses a flexible positioning tool. The flexible positioning tool comprises at least two driving parts and a positioning part, the at least two driving parts are in transmission connection with the connecting plate, and the driving parts are used for driving the connecting plate to move up and down; the frame is arranged above the connecting plate, a workpiece positioning pin is arranged on the frame, and the workpiece positioning pin is used for being in positioning fit with a workpiece; the floating assembly is connected between the frame and the connecting plate, and the floating assembly drives the frame to move in the horizontal direction relative to the connecting plate. The frame and the driving part are flexibly connected in parallel, manual clamping is not needed, the degree of freedom of the frame in the horizontal direction is guaranteed through the floating assembly, deviation caused by the consistency error of a clamp and a workpiece is eliminated, and it is guaranteed that the tool positioning pin and the workpiece can be accurately positioned under the condition that materials are fed in batches.

Description

Technical Field

[0001] This utility model relates to the field of assembly line tooling technology, and in particular to a flexible positioning tooling. Background Technology

[0002] The assembly pallet is a key piece of equipment for completing the assembly of the suspension system and the vehicle body. The accuracy of the locating pins on the pallet is crucial to the successful completion of the assembly. During the assembly process, various locating pins frequently come into contact and rub against the mounting holes of the suspension system and the vehicle body, causing wear and displacement of the locating pins. Therefore, the locating pins on the pallet need to be recalibrated after a certain period of use.

[0003] In related technologies, various rapid calibration fixtures are mainly used for manual clamping. During installation, it is necessary to manually hold the handle and visually align the pin holes. After the fixture is positioned, it is also necessary to manually disassemble it. The fixture positioning cycle depends on the operator's skill level, resulting in low automation, high labor intensity, unstable process cycle, reduced overall line cycle, and limited application scope. It is not suitable for automated production lines. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a flexible positioning fixture, which flexibly connects the frame and the driving component in parallel, eliminating the need for manual clamping, ensuring the frame's freedom in the horizontal direction, and ensuring accurate positioning of the fixture's positioning pins and workpieces in the case of batch material delivery.

[0005] The flexible positioning fixture according to an embodiment of the present invention includes: at least two driving members; a connecting plate, wherein the at least two driving members are pulsatorically connected to the connecting plate, and the driving members are used to drive the connecting plate to move up and down; a frame, wherein the frame is disposed above the connecting plate, and a workpiece positioning pin is disposed on the frame, the workpiece positioning pin being used to position and cooperate with the workpiece; and a floating component, wherein the floating component is connected between the frame and the connecting plate, and the floating component drives the frame to move horizontally relative to the connecting plate.

[0006] According to the embodiment of this utility model, the flexible positioning fixture connects the frame and the driving component in parallel flexibly, eliminating the need for manual clamping. The floating component ensures the frame's freedom in the horizontal direction, eliminating deviations caused by the consistency error between the fixture and the workpiece, and ensuring that the fixture positioning pin and the workpiece can be accurately positioned in the case of batch material arrival.

[0007] According to some embodiments of the present invention, the floating component includes: a floating positioning pin and a reset member. The floating positioning pin is fixed to the connecting plate, one end of the reset member is fixed to the frame, and the other end of the reset member abuts against the floating positioning pin. The reset member is used to provide a reset force to the frame.

[0008] According to some embodiments of the present invention, the floating component further includes: a pressure block and a connecting block, wherein a first positioning hole is provided at the center of the pressure block, the first positioning hole and the floating positioning pin are positioned and engaged, the connecting block is fixed on the frame, one end of the reset member abuts against the connecting block and the other end abuts against the pressure block.

[0009] According to some embodiments of the present invention, there are at least two reset members, and the at least two reset members are spaced apart in the circumferential direction of the floating positioning pin.

[0010] According to some embodiments of the present invention, the floating component further includes: a pressure block and a connecting block, one end of the reset member abutting against the connecting block and the other end abutting against the pressure block; wherein, the pressure block is provided with at least two first support portions, the connecting block is provided with at least two second support portions, the at least two first support portions and the at least two second support portions are provided in a one-to-one correspondence, and the reset member abutting between the first support portions and the second support portions.

[0011] According to some embodiments of the present invention, the floating component further includes an adjusting member disposed on the connecting block, the adjusting member being used to adjust the resetting force of the resetting member.

[0012] According to some embodiments of the present invention, the floating component further includes: a slider, the slider being fixed to the connecting plate, the slider having a sliding portion on one side facing the frame, the sliding portion and the frame being slidably engaged.

[0013] According to some embodiments of the present invention, the floating positioning pin is provided with a first guide slope on the side opposite to the connecting plate.

[0014] According to some embodiments of the present invention, a second guide slope is provided on the side of the workpiece positioning pin away from the frame.

[0015] According to some embodiments of the present invention, there are at least two floating components, and the at least two floating components are spaced apart between the frame and the connecting plate.

[0016] According to some embodiments of the present invention, a guide member is provided on the connecting plate, and the guide member passes through the frame.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a structural schematic diagram of the flexible positioning tool according to an embodiment of the present utility model;

[0020] Figure 2 This is a front view of the flexible positioning tooling according to an embodiment of the present utility model;

[0021] Figure 3 This is a side view of the flexible positioning tooling according to an embodiment of the present utility model;

[0022] Figure 4 yes Figure 3 Partial schematic diagram A;

[0023] Figure 5 This is a partial structural diagram of the floating component according to an embodiment of the present utility model.

[0024] Figure label:

[0025] 100. Flexible positioning tooling;

[0026] 10. Drive components;

[0027] 20. Connecting plate; 21. Guide component;

[0028] 30. Frame; 31. Workpiece locating pin; 311. Second guide slope;

[0029] 40. Floating component; 41. Floating positioning pin; 411. First guide slope; 42. Reset component; 43. Pressure block; 44. Connecting block; 45. Adjusting component; 46. Sliding component; 461. Sliding part;

[0030] 51. Workpiece; 52. Fixture; 53. Production line. Detailed Implementation

[0031] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0032] The following is for reference. Figures 1-5 Describes a flexible positioning fixture 100 according to an embodiment of the present utility model.

[0033] Reference Figures 1-5As shown, the flexible positioning fixture 100 of this utility model embodiment includes at least two driving components 10, a connecting plate 20, a frame 30, and a floating component 40.

[0034] At least two driving components 10 are connected to the connecting plate 20 via a transmission connection. The driving components 10 are used to drive the connecting plate 20 to move up and down. Specifically, one end of the driving component 10 is fixed to the frame, and the other end is connected to the connecting plate 20 via a transmission connection. The driving component 10 can be an inverted electric cylinder, which moves up and down by moving its piston rod, thereby driving the connecting plate 20 to move up and down. In this embodiment, there are two driving components 10, which are symmetrically arranged in the left and right directions of the flexible positioning fixture 100.

[0035] The frame 30 is positioned above the connecting plate 20, and a workpiece positioning pin 31 is provided on the frame 30 for positioning and engaging with the workpiece 51. Specifically, the frame 30 has a reserved hole through which the piston rod of the electric cylinder passes and is rigidly connected to the connecting plate 20 below the frame 30. This allows the driving component 10 to move the connecting plate 20 up and down. Since the frame 30 is positioned above the connecting plate 20, it can also move vertically along with the connecting plate 20 when the connecting plate 20 moves up and down. At the same time, the driving component 10 and the frame 30 are flexibly connected, giving the frame 30 a certain degree of freedom. This avoids damage to other structures caused by asynchronous movement of multiple driving components 10, thus improving the reliability of the flexible positioning fixture 100.

[0036] The workpiece positioning pin 31 on the frame 30 is used to position and cooperate with the workpiece 51. The workpiece 51 can be a vehicle pallet or other structures that need to be calibrated.

[0037] Specifically, workpiece 51 is mounted on fixture 52, which is a traveling fixture 52. Workpiece 51 moves along the production line 53 following the traveling fixture 52. When workpiece positioning pin 31 calibrates workpiece 51, it moves downward to engage with the pin hole of workpiece 51. Due to differences in the incoming material of workpiece 51 and differences in the dimensional consistency of fixture 52, the positioning pin is offset to a certain extent relative to the center of the pin hole of workpiece 51. That is, when workpiece positioning pin 31 moves downward, it is not at the exact center of the pin hole of workpiece 51.

[0038] Therefore, the floating component 40 is connected between the frame 30 and the connecting plate 20, and the floating component 40 drives the frame 30 to move horizontally relative to the connecting plate 20. Thus, the driving component 10 drives the connecting plate 20 to move vertically, and the frame 30 moves with the connecting plate 20. When the tooling positioning pin deviates to a certain extent from the center of the pin hole of the workpiece 51, the floating component 40 drives the frame 30 to move horizontally relative to the connecting plate 20. The tooling positioning pin on the frame 30 can then move horizontally, allowing it to correct the deviation from the center of the pin hole of the workpiece 51. The tooling positioning pin slides into the pin hole of the workpiece 51 by its own weight, ensuring that the flexible positioning tooling 100 can accurately position materials in batch processing.

[0039] Therefore, by flexibly connecting the frame 30 and the drive component 10 in parallel, manual clamping is not required. The floating component 40 ensures the freedom of the frame 30 in the horizontal direction, eliminates the deviation caused by the consistency error between the fixture 52 and the workpiece 51, and ensures that the tooling positioning pin and the workpiece 51 can be accurately positioned in the case of batch material arrival.

[0040] Reference Figures 2-5 As shown, the floating assembly 40 includes a floating positioning pin 41 and a reset member 42. The floating positioning pin 41 is fixed to the connecting plate 20, and one end of the reset member 42 is fixed to the frame 30, while the other end of the reset member 42 abuts against the floating positioning pin 41. The reset member 42 provides a reset force to the frame 30. Specifically, the floating positioning pin 41, fixed to the connecting plate 20, experiences minimal horizontal load as the connecting plate 20 moves, resulting in minimal positioning deviation. The other end of the reset member 42 abuts against the floating positioning pin 41, while the other end is fixed to the frame 30. The floating positioning pin 41 remains stationary in the horizontal direction and can serve as a positioning reference. The frame 30 has a certain degree of freedom in the horizontal direction; therefore, the connection between the reset member 42 and the frame 30 allows the frame 30 to move, thereby providing a reset force to the frame 30.

[0041] Preferably, the reset element 42 can be a spring, which uses the spring force to reset the frame 30. For example, when the workpiece positioning pin 31 is offset to the left relative to the pin hole of the workpiece 51, the workpiece positioning pin 31 needs to move to the right to be positioned and engaged with the center of the pin hole of the workpiece 51. As the workpiece positioning pin 31 slides downward under the force of gravity, it simultaneously drives the frame 30 to move horizontally to the right. At this time, the reset element 42 moves to the right and compresses, and the workpiece positioning pin 31 slides into the pin hole of the workpiece 51, realizing the positioning of the flexible positioning fixture 100.

[0042] When the piston of the drive component 10 retracts, the connecting plate 20 and the frame 30 move upward, the workpiece positioning pin 31 disengages from the workpiece 51, releasing the constraint. At this time, the compressed reset component 42 returns to its original state, and the resulting elastic force drives the frame 30 to reset to its initial state. In this way, the drive component 10 can be used to position the workpiece positioning pin 31 and the workpiece 51, adapting to the production of the automated production line 53, and ensuring that the tooling positioning pin and the workpiece 51 can be accurately positioned under batch material supply. The reset component 42 is used to reset the frame 30, facilitating the next positioning cycle, thus realizing the automation of the flexible positioning tooling 100.

[0043] Reference Figures 3-5 As shown, the floating assembly 40 also includes a pressure block 43 and a connecting block 44. A first positioning hole is provided at the center of the pressure block 43, which engages with a floating positioning pin 41. The connecting block 44 is fixed to the frame 30. One end of the reset member 42 abuts against the connecting block 44, and the other end abuts against the pressure block 43. Through the positioning engagement of the first positioning hole and the floating positioning pin 41, the pressure block 43 is connected to the floating positioning pin 41. One end of the reset member 42 abuts against the connecting block 44, and the other end abuts against the pressure block 43. The floating positioning pin 41 is fixed to the connecting plate 20, allowing only vertical movement while maintaining its horizontal position. This serves as a positioning reference for the reset member 42 to reset the frame 30, improving the stability of the flexible positioning fixture 100.

[0044] Reference Figure 5 As shown, there are at least two reset members 42, which are spaced apart in the circumferential direction of the floating positioning pin 41. Specifically, in this embodiment, there are three reset members 42, which are arranged around the circumference of the floating positioning pin 41 and contact the floating positioning pin 41 in the horizontal direction through the pressure block 43. After the workpiece positioning pin 31 is separated from the workpiece 51, the reset members 42 ensure that the frame 30 is reset to the initial state.

[0045] By setting multiple reset components 42, and the reset components 42 are spaced apart in the circumferential direction of the floating positioning pin 41, it can be ensured that the frame 30 can be reset to the initial state when it moves in any direction.

[0046] Reference Figures 3-5As shown, the floating assembly 40 also includes a pressure block 43 and a connecting block 44. One end of the reset member 42 abuts against the connecting block 44, and the other end abuts against the pressure block 43. The pressure block 43 is provided with at least two first support portions, and the connecting block 44 is provided with at least two second support portions. The at least two first support portions and at least two second support portions are arranged in a one-to-one correspondence, and the reset member 42 abuts between the first and second support portions. By providing the first and second support portions, the force on both ends of the reset member 42 is evenly distributed, reducing stress concentration and the risk of failure due to fatigue fracture or deformation. The shapes of the first and second support portions match those of the ends of the reset member 42, effectively preventing displacement, rotation, or loosening of the reset member 42 during operation, ensuring a firm connection, reducing problems caused by misalignment or mismatch during installation, improving assembly efficiency, and allowing force to be transmitted to the reset member 42 more efficiently, thus improving working performance.

[0047] Reference Figure 5 As shown, the floating assembly 40 also includes an adjusting member 45, which is disposed on the connecting block 44. The adjusting member 45 is used to adjust the reset force of the reset member 42. Specifically, the adjusting member 45 can be an adjusting screw, which adjusts the spring preload of the reset member 42 to meet the force required for the frame 30 to reset to its initial state.

[0048] Reference Figure 2 As shown, the floating assembly 40 also includes a slider 46, which is fixed to the connecting plate 20. A sliding portion 461 is provided on the side of the slider 46 facing the frame 30, and the sliding portion 461 slides in conjunction with the frame 30. Specifically, the slider 46 can be a bullseye wheel, and the sliding portion 461, fixed to the connecting plate 20, can move vertically with the connecting plate 20. The sliding portion 461 of the slider 46 facing the frame 30 can be a swivel ball, which contacts the frame 30, providing vertical support for the frame 30 and allowing the frame 30 to slide freely on the sliding portion 461 of the bullseye wheel. Thus, when the connecting plate 20 moves vertically under the drive of the driving member 10, the slider 46 connects to the connecting plate 20. When the slider 46 moves downward, the frame 30 also moves downward due to gravity. Furthermore, the slider 46 makes the horizontal movement of the frame 30 smoother, improving the ease of positioning the workpiece positioning pin 31 and the workpiece 51.

[0049] Reference Figure 2As shown, the floating positioning pin 41 has a first guide slope 411 on the side away from the connecting plate 20. The first guide slope 411 can improve the ease of installation of the floating positioning pin 41. The workpiece positioning pin 31 has a second guide slope 311 on the side away from the frame 30. The second guide slope 311 can be conical. During the downward movement of the workpiece positioning pin 31, the second guide slope 311 and the pin hole of the workpiece 51 are pressed together, generating a reaction force. This can drive the workpiece positioning pin 31 and the frame 30 to move horizontally, eliminating deviations caused by the consistency error between the fixture 52 and the workpiece 51, and ensuring accurate positioning of the tooling in the case of batch material delivery.

[0050] Specifically, the piston of the driving component 10 extends, causing the connecting plate 20 to move downward. The frame 30 moves downward synchronously under the action of gravity. Due to the difference in the incoming material of the workpiece 51 and the difference in the dimensional consistency of the fixture 52, the workpiece positioning pin 31 is offset to a certain extent relative to the center position of the pin hole of the workpiece 51. During the downward movement of the workpiece positioning pin 31, the second guide inclined surface 311 of the workpiece positioning pin 31 is squeezed against the pin hole of the workpiece 51, generating a reaction force. Under the action of the reaction force, the workpiece positioning pin 31 and the frame 30 move in the horizontal direction. The movement of the frame 30 causes the connecting block 44 to compress the reset component 42, and the frame 30 rolls on the sliding component 46 until the workpiece positioning pin 31 moves vertically downward and slides into the pin hole of the workpiece 51, completing the positioning of the flexible positioning fixture 100 on the workpiece 51.

[0051] After the flexible positioning fixture 100 is positioned, the parts can be installed and fastened on the workpiece 51. After the parts are installed, the piston of the drive component 10 retracts, causing the connecting plate 20 to move upward. The frame 30 is supported by the sliding component 46 and moves vertically upward in sync. As the frame 30 moves upward, the workpiece positioning pin 31 disengages from the pin hole of the workpiece 51, the reaction force is eliminated, and the frame 30 is reset to the initial state under the action of the reset component 42.

[0052] Reference Figure 2 As shown, there are at least two floating components 40, which are spaced apart between the frame 30 and the connecting plate 20. The number of floating components 40 corresponds to the number of driving components 10, and they are arranged symmetrically from left to right to ensure that the flexible positioning fixture 100 is subjected to uniform force at each position and has high consistency in movement.

[0053] Reference Figure 1 and Figure 3 As shown, a guide 21 is provided on the connecting plate 20. The guide 21 passes through the frame 30 and can preliminarily position the frame 30 and the connecting plate 20, saving the installation time of other structures and improving installation efficiency.

[0054] In summary, the specific implementation steps for positioning the flexible positioning fixture 100 and the workpiece 51 are as follows:

[0055] First, the workpiece 51 is placed on the fixture 52 and flows on the production line 53. After completing the previous processes, it flows to the position directly below the flexible positioning fixture 100.

[0056] In the second step, after the fixture 52 is positioned on the workstation, the drive component 10 drives the flexible positioning fixture 100 to move vertically downward, and the second guide slope 311 of the workpiece positioning pin 31 contacts the pin hole of the workpiece 51 and slides.

[0057] In the third step, the driving component 10 continues to extend, the flexible positioning fixture 100 continues to move downward, and the reaction force generated by the contact between the workpiece positioning pin 31 and the workpiece 51 causes the frame 30 to move in the direction of the reaction force until the workpiece positioning pin 31 slides into the pin hole of the workpiece 51. At this point, the flexible positioning fixture 100 is positioned relative to the workpiece 51 and a constraint is generated.

[0058] The fourth step involves using the flexible positioning fixture 100 to install and fasten the parts on the workpiece 51.

[0059] Fifth step: After the components are installed, the piston of the drive component 10 retracts, the flexible positioning fixture 100 moves upward, the workpiece positioning pin 31 separates from the workpiece 51, and the frame 30 is reset to its initial state under the force of the reset component 42, and the constraint between the two is released.

[0060] In the sixth step, the drive unit 10 retracts to the safe position, and the workpiece 51 follows the fixture 52 to the next station.

[0061] At this point, the process for workpiece 51 at this workstation is complete.

[0062] This embodiment provides a flexible positioning fixture 100. On the automated production line 53, the fixture has a certain degree of flexibility, ensuring that the fixture falls into the pin hole of the workpiece 51 by its own weight, thereby realizing the flexible positioning of the flexible positioning fixture 100 and the workpiece 51, eliminating the positioning interference caused by the inconsistency between the fixture 52 and the workpiece 51, and is suitable for automated production.

[0063] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0065] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A flexible positioning tooling, characterized in that, include: At least two drive components (10); The connecting plate (20) is connected to at least two of the driving members (10) in a transmission manner, and the driving members (10) are used to drive the connecting plate (20) to move up and down; A frame (30) is disposed above the connecting plate (20). A workpiece positioning pin (31) is provided on the frame (30), and the workpiece positioning pin (31) is used to position and cooperate with the workpiece (51). A floating component (40) is connected between the frame (30) and the connecting plate (20), and the floating component (40) drives the frame (30) to move horizontally relative to the connecting plate (20).

2. The flexible positioning fixture according to claim 1, characterized in that, The floating component (40) includes a floating positioning pin (41) and a reset component (42). The floating positioning pin (41) is fixed on the connecting plate (20). One end of the reset component (42) is fixed on the frame (30). The other end of the reset component (42) abuts against the floating positioning pin (41). The reset component (42) is used to provide a reset force to the frame (30).

3. The flexible positioning fixture according to claim 2, characterized in that, The floating component (40) further includes a pressure block (43) and a connecting block (44). The pressure block (43) has a first positioning hole at its center. The first positioning hole and the floating positioning pin (41) are positioned and engaged. The connecting block (44) is fixed on the frame (30). One end of the reset member (42) abuts against the connecting block (44) and the other end abuts against the pressure block (43).

4. The flexible positioning fixture according to claim 2, characterized in that, There are at least two reset members (42), and the at least two reset members (42) are spaced apart in the circumferential direction of the floating positioning pin (41).

5. The flexible positioning fixture according to claim 4, characterized in that, The floating component (40) further includes: a pressure block (43) and a connecting block (44), wherein one end of the reset member (42) abuts against the connecting block (44) and the other end abuts against the pressure block (43); wherein, The pressure block (43) is provided with at least two first support parts, and the connecting block (44) is provided with at least two second support parts. The at least two first support parts and the at least two second support parts are provided in a one-to-one correspondence, and the reset member (42) abuts between the first support parts and the second support parts.

6. The flexible positioning fixture according to claim 3, characterized in that, The floating component (40) further includes an adjusting member (45), which is disposed on the connecting block (44) and is used to adjust the reset force of the reset member (42).

7. The flexible positioning fixture according to claim 3, characterized in that, The floating component (40) further includes a slider (46), which is fixed on the connecting plate (20). The slider (46) has a sliding part (461) on the side facing the frame (30), and the sliding part (461) and the frame (30) are in sliding cooperation.

8. The flexible positioning fixture according to claim 2, characterized in that, The floating positioning pin (41) is provided with a first guide slope (411) on the side opposite to the connecting plate (20).

9. The flexible positioning fixture according to claim 1, characterized in that, The workpiece positioning pin (31) is provided with a second guide slope (311) on the side away from the frame (30).

10. The flexible positioning fixture according to claim 1, characterized in that, There are at least two floating components (40), and at least two floating components (40) are spaced apart between the frame (30) and the connecting plate (20).

11. The flexible positioning fixture according to claim 1, characterized in that, The connecting plate (20) is provided with a guide (21), and the guide (21) passes through the frame (30).

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