A high-precision instrument clamping aid capable of quick switching

Abstract

This invention relates to a high-precision instrument clamping fixture with rapid switchability, comprising an instrument clamping fixture system, a fixture fixing system, and an automatic fixture opening system. The high-precision instrument clamping fixture of this invention features a detachable structure with a dovetail groove connection between the fixture body and the fixture fixing body, which is simple and reliable. It enables rapid adjustment, switching, and fixing of clamping fixtures for different vehicle models, allowing for the co-production of instrument tube beams of different sizes on the same line, achieving flexibility. An adjustable Y-axis limiting structure ensures that the working surface accuracy of the fixture reaches 0.1mm, meeting the high-precision requirements of automatic instrument material handling for instrument tube beams. The power source, from the drive shaft of the automatic opening system to the rotating pin of the instrument clamping fixture system, then to the manual opening handle, moving guide pin, positioning pin fixing plate, and finally to the motion transmission structure on the positioning pin, realizes the automatic detachment of the instrument tube beam, meeting the requirements of automatic instrument material handling for automatic tube beam detachment.

Description

Technical Field

[0001] This invention belongs to the field of passenger vehicle technology, specifically relating to a high-precision instrument clamping accessory that can be quickly switched. Background Technology

[0002] In passenger vehicle assembly workshops, the processes of instrument panel sub-assembly, clamping, transfer, and unloading are generally carried out on instrument panel sub-assembly trays. Instrument panels are typically fixed to clamping fixtures on the instrument panel tray via positioning holes on the instrument panel frame. For manual loading and unloading processes, the instrument panel beam is usually fixed to the instrument panel tray via Y-axis positioning holes. This type of instrument panel tray fixture is generally fixed to the instrument panel tray via linear guides or similar structures, and can accommodate instrument panel beams of different sizes by sliding left and right. This type of instrument panel tray is highly flexible, but its structure is complex, its manufacturing cost is high, and its precision is low, making it unsuitable for automated loading and unloading processes. For automated unloading processes, the instrument panel beam is usually positioned on the instrument panel tray via X-axis positioning holes, with movable baffles next to the positioning pins to lock the instrument panel beam onto the positioning pins. This type of instrument panel tray is highly precise and simple in structure, but its flexibility is poor, typically only accommodating instrument panel beams of one size, and it cannot clamp instrument panel beams that can only be clamped in the Y-axis direction.

[0003] In the final assembly workshops of independent brands, instrument panel beams of three or more sizes are typically produced on the same production line. As these brands develop, the level of automation in their equipment gradually increases, and fully automated instrument panel material handling equipment is increasingly being adopted. This necessitates a novel instrument panel clamping fixture structure that can meet both the high precision requirements of automated material handling and the high flexibility requirements of producing instrument panel beams of multiple sizes on the same production line, especially for instrument panel beams that can only be clamped in the Y-axis direction. Existing instrument tray structures cannot simultaneously meet all three requirements. Summary of the Invention

[0004] The purpose of this invention is to provide a quick-change high-precision instrument clamping auxiliary tool to solve the problem of automatic material handling for instrument panel beams of various sizes that can only be clamped in the Y direction. This enables the co-line production of multi-size instrument panel beams that can only be clamped in the Y direction, and also achieves automatic detachment of the instrument panel beams.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] A high-precision instrument clamping accessory that can be quickly switched consists of an instrument clamping accessory system, an accessory fixing system, and an accessory automatic opening system;

[0007] The instrument clamping auxiliary system includes a clamp body 15 equipped with a Y-direction limiting block 17, a linear guide rail 14 fixed on the clamp body 15, a positioning pin fixing plate 11 fixed on the moving end of the linear guide rail 14, which can move left and right along the guide rail, two positioning pins on the positioning pin fixing plate 11, a moving guide pin 9 passing through the groove of the auxiliary manual opening handle 10 and fixed on the positioning pin fixing plate 11, a rotating pin 8 passing through the auxiliary manual opening handle 10 and inserted into the clamp body 15 through a wear-resistant sleeve 23, the auxiliary manual opening handle 10 being fastened to the rotating pin 8, and a spring pin 21 with a ball bearing 22 installed at its end;

[0008] The auxiliary fixture fixing system includes a fixture fixing body 1 fixed to the fixture body 15, which is equipped with a Y-direction stop block 2. The top of the fixture fixing body 1 is equipped with a fixture locking structure 4, which is fixed to the fixture fixing 15 by a cotter pin 19 and can rotate around the cotter pin 19. Pressing the fixture locking structure 4 can control the retraction and ejection of its fixture locking structure latch 3.

[0009] The automatic opening system of the auxiliary tool includes a drive shaft 5 inserted into the hole of the clamp fixing body 15. One end of the drive shaft 5 is provided with a groove structure corresponding to the protrusion on the rotating pin 8. Both ends of the drive shaft 5 are equipped with wear-resistant sleeves. The end of the other drive shaft 5 is equipped with a snap-fit ​​block 24 that can be snapped onto the instrument tray. The drive shaft fixing seat 6 is also installed on the drive shaft 5 on this side.

[0010] Furthermore, the linear guide rail 14 is fastened to the fixture body 15 by screws, and the positioning pin fixing plate 11 is screwed to the moving end of the linear guide rail 14.

[0011] Furthermore, positioning pins I12 and II13 are fastened to the positioning pin fixing plate 11 by screws. The positioning pins are oriented left and right and can be inserted into the positioning holes of the instrument panel tube beam to clamp the instrument panel tube beam in the Y direction.

[0012] Furthermore, the Y-direction limiting block 17 is fastened to the clamp body 15 by screws, and an adjusting shim 16 is placed between the Y-direction limiting block 17 and the clamp body 15.

[0013] Furthermore, the manual opening handle 10 of the assistive device is fastened to the rotating pin 8 by the handle fixing pin 20.

[0014] Furthermore, the clamp fixing body 1 has a dovetail groove for fixing the clamp body 15.

[0015] Furthermore, the Y-direction stop 2 is screwed onto the clamp fixing body 1.

[0016] Further, press down on the clamp locking structure 4. The clamp locking structure 4 rotates around the cotter pin 19. The clamp locking structure latch 3 on the clamp locking structure 4 retracts into the clamp fixing body 1. Release the clamp locking structure 4. The clamp locking structure latch 3 of the clamp locking structure 4 moves downward under the action of the spring to fix the clamp body 15 in the dovetail groove of the clamp fixing body 1.

[0017] Furthermore, by pulling the auxiliary tool to the right to manually open the handle 10, the positioning pin is adjusted to the far right, and the spring pin 21 can press the ball 22 into the corresponding groove on the clamp body 15 to achieve position locking.

[0018] Furthermore, both the wear-resistant sleeve I7 and the wear-resistant sleeve II18 of the drive shaft are made of tin bronze.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] This invention relates to a quick-change, high-precision instrument clamping fixture with a dovetail groove detachable structure. This simple and reliable design allows for rapid adjustment, switching, and fixing of clamping fixtures for different vehicle models, enabling co-production of instrument tube beams of varying sizes and achieving flexibility. The adjustable Y-axis limiting structure ensures the fixture's working surface accuracy reaches 0.1mm, meeting the high-precision requirements of automatic instrument material handling. The motion transmission structure—power source → drive shaft → rotating pin → manual opening handle → moving guide pin → positioning pin fixing plate → positioning pin—achieves automatic detachment of the instrument tube beam, fulfilling the automatic detachment requirement of automatic instrument material handling. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the high-precision instrument clamping accessory that can be quickly switched according to the present invention;

[0023] Figure 2 This is a schematic diagram of the assistive device opening system and assistive device fixing system of the present invention;

[0024] Figure 3 This is a schematic diagram of an instrument clamping auxiliary system;

[0025] Figure 4 This is a cross-sectional view of the instrument clamping auxiliary system;

[0026] Figure 5This is a schematic diagram of the clamping aid system in the embodiment;

[0027] Figure 6 This is a schematic diagram of the fixture body.

[0028] In the diagram, 1. Fixture fixing body; 2. Y-direction stop block; 3. Fixture locking structure latch; 4. Fixture locking structure; 5. Drive shaft; 6. Drive shaft fixing seat; 7. Drive shaft wear-resistant sleeve I; 8. Rotating pin; 9. Moving guide pin; 10. Auxiliary tool manual handle; 11. Positioning pin fixing plate; 12. Positioning pin I; 13. Positioning pin II; 14. Linear guide rail; 15. Fixture body; 16. Adjusting shim; 17. Y-direction limit block; 18. Drive shaft wear-resistant sleeve II; 19. Cotter pin; 20. Handle fixing pin; 21. Spring pin; 22. Ball bearing; 23. Wear-resistant sleeve; 24. Snap-fit ​​block. Detailed Implementation

[0029] The present invention will be further described below with reference to embodiments:

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0031] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this invention, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] This invention relates to a high-precision instrument clamping fixture that can be quickly switched. The entire fixture is snapped onto the instrument tray using a snap-fit ​​structure. Each fixture has a different length of locating pin, allowing for the co-line production of instrument panel beams of various sizes by switching between different fixtures. The fixture features an adjustable Y-axis limit block at the front end of the locating pin, achieving high-precision clamping of the instrument panel beam and meeting the high-precision requirements of automated instrument panel material handling. The locating pin of this fixture is oriented left-right, enabling Y-axis clamping of the instrument panel beam.

[0033] The present invention provides a high-precision instrument clamping accessory that can be quickly switched, which consists of an instrument clamping accessory system, an accessory fixing system, and an accessory automatic opening system.

[0034] The instrument clamping auxiliary system includes a manual opening handle 10, a positioning pin fixing plate 11, a linear guide rail 14, and a clamp body 15.

[0035] The rear end of the clamp body 15 is a trapezoidal block that mates with the dovetail groove of the clamp fixing body 1 of the auxiliary fixture fixing system. The entire clamp body 15 is made of Cr material. The linear guide rail 14 is fastened to the clamp body 15 by screws. The positioning pin fixing plate 11 is screwed to the moving end of the linear guide rail 14 and can slide left and right through the connection of the linear guide rail 14. Positioning pin I 12 and positioning pin II 13 are fastened to the positioning pin fixing plate 11 by screws. During operation, they are inserted into the positioning holes of the instrument panel tube beam for positioning. The positioning pins face left and right, allowing for Y-axis clamping of the instrument panel tube beam. The Y-axis limiting block 17 is fastened to the clamp body 15 by screws. An adjusting shim 16 is placed between the Y-axis limiting block 17 and the clamp body 15. The thickness of the adjusting shim 16 is as thin as 0.1mm. The Y-axis accuracy of the Y-axis limiting block 17 can be adjusted by adjusting the number of shims 16, and the adjustment accuracy can reach 0.1mm. The movable guide pin 9 passes through the groove of the manual opening handle 10 of the auxiliary fixture and is fixed to the positioning pin fixing plate 11. The rotating pin 8 passes through the manual opening handle 10 of the auxiliary fixture and is inserted into the clamp body 15 through the wear-resistant sleeve 23. The manual opening handle 10 of the auxiliary fixture is fastened to the rotating pin 8 by the handle fixing pin 20; the spring pin 21 screwed onto the clamp body 15 is a standard part, and a ball bearing 22 is installed at the end.

[0036] The auxiliary fixture fixing system includes a fixture fixing body 1, a Y-direction stop 2, a fixture locking structure tongue 3, and a fixture locking structure 4. The fixture fixing body 1 has a dovetail groove for fixing the fixture body 15. The Y-direction stop 2 is screwed onto the fixture fixing body 1. The fixture locking structure 4 is installed on the top of the fixture fixing body 1 and fixed to the fixture fixing body 15 by a cotter pin 19. The fixture locking structure 4 can rotate around the cotter pin 19. The fixture locking structure tongue 3 is a wedge-shaped protrusion on the fixture locking structure 4.

[0037] The automatic opening system of the auxiliary tool includes a drive shaft 5, a drive shaft fixing seat 6, a drive shaft wear-resistant sleeve 7 and a drive shaft wear-resistant sleeve 18, and a snap-fit ​​block 24. The drive shaft 5 is inserted into a hole in the clamp fixing body 15, and its end has a groove structure that corresponds to the protrusion on the rotating pin 8.

[0038] The drive shaft 5 is equipped with wear-resistant sleeves I7 and II18 at both ends, both made of tin bronze, which provide wear resistance and lubrication. The drive shaft mounting base 6 mates with the wear-resistant sleeve I7. A snap-fit ​​block 24 is screwed onto the end of the drive shaft 5 and can be snapped onto the instrument tray.

[0039] Working principle:

[0040] When working, first confirm the vehicle model. If the instrument clamping auxiliary on the instrument tray does not match the vehicle model, press down on the clamp locking structure 4. The clamp locking structure 4 rotates around the cotter pin 19. The clamp locking structure latch 3 on the clamp locking structure 4 retracts into the clamp fixing body 1, and the instrument clamping auxiliary system disengages from the auxiliary fixing system.

[0041] Take the instrument clamping accessory corresponding to the vehicle model, press down on the clamp locking structure 4, and after the clamp locking structure latch 3 on the clamp locking structure 4 retracts into the clamp fixing body 1, clamp the clamp body 15 into the clamp fixing body 1. Release the clamp locking structure 4, and the clamp locking structure latch 3 of the clamp locking structure 4 will move downward under the action of the spring, fixing the clamp body 15 in the dovetail groove of the clamp fixing body 1. Pull the accessory to the right to manually open the handle 10, and adjust the positioning pin to the rightmost position. At this time, the spring pin 21 presses the ball 22 into the corresponding groove on the clamp body 15 to achieve position locking.

[0042] Take the instrument panel tube beam corresponding to the vehicle model, align the right end face of the tube beam with the Y-direction limiting block 17, pull the auxiliary tool to manually open the handle 10 to the left, and insert the positioning pin I and positioning pin II into the positioning hole on the end face of the instrument panel tube beam to achieve the positioning of the instrument panel. At this time, the spring pin 21 presses the ball 22 into the corresponding groove on the clamp body 15 to achieve position locking.

[0043] During the automatic opening process of the instrument panel, the external power structure engages with the locking block 24 at the end of the drive shaft 5, and then rotates clockwise. The action is transmitted through the drive shaft 5, rotating pin 8, auxiliary tool manual opening handle 10, moving guide pin 9, and positioning pin fixing plate 11 to positioning pin I and positioning pin II. Positioning pin I and positioning pin II move to the right and disengage from the instrument panel beam, thus achieving automatic opening of the auxiliary tool. If automatic opening fails or the automatic opening mechanism malfunctions, the auxiliary tool manual opening handle can be manually pulled to the right to manually pull the positioning pin to the right and disengage from the instrument panel beam.

[0044] Example 1

[0045] This invention is applied to the H assembly line at the Changqing Base of China FAW Group Corporation and can be adapted to four models: H9, E-HS9, C801, and E702.

[0046] A high-precision instrument clamping fixture that can be quickly switched is provided. The entire fixture is snapped onto the instrument tray using a snap-fit ​​structure. Each fixture has a different length of locating pin. There are four types of clamping fixtures: each adaptable to instrument panel beams with Y-axis dimensions of 1402mm, 1412mm, 1474mm, and 1498mm. Each instrument panel beam size corresponds to a different sized instrument clamping fixture. By switching fixtures, multiple vehicle models can be produced on the same production line. Figure 5 As shown.

[0047] The high-precision instrument clamping accessory that can be quickly switched consists of an instrument clamping accessory system, an accessory fixing system, and an accessory automatic opening system.

[0048] The instrument clamping auxiliary system includes a clamp body 15 equipped with a Y-axis limiting block 17. A linear guide rail 14 is fixed to the clamp body 15 by screws. A positioning pin fixing plate 11 is screwed to the moving end of the linear guide rail 14 and can move left and right along the guide rail. Two positioning pins are mounted on the positioning pin fixing plate 11. Positioning pin I 12 and positioning pin II 13 are fastened to the positioning pin fixing plate 11 by screws. The positioning pins are oriented left and right and can be inserted into the positioning holes of the instrument panel tube beam to clamp the instrument panel tube beam in the Y direction. The Y-axis limiting block 17 is fastened to the clamp body 15 by screws, and an adjusting shim 16 is placed between the Y-axis limiting block 17 and the clamp body 15. The movable guide pin 9 passes through the groove of the manual opening handle 10 of the auxiliary tool and is fixed on the positioning pin fixing plate 11. The rotating pin 8 passes through the manual opening handle 10 of the auxiliary tool and is inserted into the clamp body 15 through the wear-resistant sleeve 23. The manual opening handle 10 of the auxiliary tool is fastened to the rotating pin 8 through the handle fixing pin 20. The clamp body 15 is also equipped with a spring pin 21, and a ball bearing 22 is installed at its end.

[0049] The auxiliary fixture fixing system includes a fixture fixing body 1 fixed to the fixture body 15. The fixture fixing body 1 has a dovetail groove for fixing the fixture body 15. A Y-axis stop block 2 is installed on the fixture fixing body 1. The top of the fixture fixing body 1 is equipped with a fixture locking structure 4, which is fixed to the fixture fixing body 15 by a cotter pin 19 and can rotate around the cotter pin 19. Pressing the fixture locking structure 4 can control the retraction and ejection of its fixture locking structure latch 3.

[0050] Press down on the clamp locking structure 4. The clamp locking structure 4 rotates around the cotter pin 19, and the clamp locking structure latch 3 on the clamp locking structure 4 retracts into the clamp fixing body 1. Release the clamp locking structure 4, and the clamp locking structure latch 3 of the clamp locking structure 4 moves downward under the action of the spring, fixing the clamp body 15 in the dovetail groove of the clamp fixing body 1. Pull the auxiliary tool to the right to manually open the handle 10, and adjust the positioning pin to the rightmost position. The spring pin 21 can press the ball 22 into the corresponding groove on the clamp body 15 to achieve position locking.

[0051] The automatic opening system for the auxiliary fixture includes a drive shaft 5 inserted into the hole of the clamp fixing body 15. One end of the drive shaft 5 has a groove structure corresponding to the protrusion on the rotating pin 8. Both ends of the drive shaft 5 are fitted with wear-resistant sleeves. The other end of the drive shaft 5 is fitted with a locking block 24 that can be engaged with the instrument tray, and a drive shaft fixing seat 6 is mounted on this side of the drive shaft 5. Both the wear-resistant sleeve I 7 and the wear-resistant sleeve II 18 are made of tin bronze.

[0052] This invention relates to a high-precision instrument clamping fixture that can be quickly switched. Its dovetail groove design allows for a detachable structure that is simple and reliable, enabling rapid adjustment and switching between clamping fixtures for different vehicle models. Different length positioning pins accommodate instrument panel beams of varying sizes, allowing for co-production of instrument panel beams of different sizes on the same production line, achieving flexibility. An adjustable Y-axis limiting structure ensures the fixture's working surface accuracy reaches 0.1mm, meeting the high-precision requirements of automatic instrument panel material handling. The motion transmission structure—power source → drive shaft → rotating pin → manual opening handle → moving guide pin → positioning pin fixing plate → positioning pin—achieves automatic disengagement of the instrument panel beam, fulfilling the requirement for automatic disengagement of the beam in automatic instrument panel material handling.

[0053] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A high-precision instrument clamping accessory with quick switching capability, characterized in that: It consists of an instrument clamping auxiliary system, an auxiliary fixing system, and an automatic auxiliary opening system; The instrument clamping auxiliary system includes a clamp body (15) equipped with a Y-direction limiting block (17), a linear guide rail (14) fixed on the clamp body (15), a positioning pin fixing plate (11) fixed on the moving end of the linear guide rail (14) and capable of moving left and right along the guide rail, two positioning pins on the positioning pin fixing plate (11), a moving guide pin (9) passing through the groove of the auxiliary manual opening handle (10) and fixed on the positioning pin fixing plate (11), a rotating pin (8) passing through the auxiliary manual opening handle (10) and inserted into the clamp body (15) through a wear-resistant sleeve (23), the auxiliary manual opening handle (10) being fastened to the rotating pin (8), and a spring pin (21) is also installed on the clamp body (15), with a ball (22) installed at its end; The auxiliary fixture fixing system includes a fixture fixing body (1) fixed to the fixture body (15), which is equipped with a Y-direction stop (2). The top of the fixture fixing body (1) is equipped with a fixture locking structure (4), which is fixed to the fixture body (15) by a cotter pin (19) and can rotate around the cotter pin (19). Pressing the fixture locking structure (4) can control the retraction and ejection of its fixture locking structure latch (3). The auxiliary automatic opening system includes a drive shaft (5) inserted into the hole of the clamp fixing body (1), one end of which is provided with a groove structure corresponding to the protrusion on the rotating pin (8), both ends of the drive shaft (5) are equipped with wear-resistant sleeves, the other end of the drive shaft (5) is equipped with a snap-fit ​​block (24) that can be snapped onto the instrument tray, and the drive shaft (5) on this side is equipped with a drive shaft fixing seat (6).

2. The high-precision instrument clamping aid with rapid switching capability according to claim 1, characterized in that: The linear guide (14) is fastened to the fixture body (15) by screws, and the positioning pin fixing plate (11) is screwed to the moving end of the linear guide (14).

3. The high-precision instrument clamping aid with rapid switching capability according to claim 1, characterized in that: Positioning pin I (12) and positioning pin II (13) are fastened to the positioning pin fixing plate (11) by screws. The positioning pins are oriented left and right and can be inserted into the positioning hole of the instrument panel tube beam to clamp the instrument panel tube beam in the Y direction.

4. The high-precision instrument clamping aid with rapid switching capability according to claim 1, characterized in that: The Y-direction limiting block (17) is fastened to the clamp body (15) by screws, and an adjusting shim (16) is placed between the Y-direction limiting block (17) and the clamp body (15).

5. A high-precision instrument clamping aid with rapid switching capability according to claim 1, characterized in that: The manual opening handle (10) of the auxiliary tool is secured to the rotating pin (8) by the handle fixing pin (20).

6. The high-precision instrument clamping aid with rapid switching capability according to claim 1, characterized in that: The clamp fixing body (1) has a dovetail groove for fixing the clamp body (15).

7. A high-precision instrument clamping accessory with rapid switching capability according to claim 1, characterized in that: The Y-direction stop (2) is screwed onto the clamp fixing body (1).

8. A high-precision instrument clamping accessory with rapid switching capability according to claim 1, characterized in that: Press down on the clamp locking structure (4), the clamp locking structure (4) rotates around the cotter pin (19), the clamp locking structure latch (3) on the clamp locking structure (4) retracts into the clamp fixing body (1), release the clamp locking structure (4), the clamp locking structure latch (3) of the clamp locking structure (4) moves downward under the action of the spring to fix the clamp body (15) in the dovetail groove of the clamp fixing body (1).

9. A high-precision instrument clamping accessory with rapid switching capability according to claim 1, characterized in that: Pull the auxiliary tool to the right to manually open the handle (10), adjust the positioning pin to the far right, and the spring pin (21) can press the ball (22) into the corresponding groove on the clamp body (15) to achieve position locking.

10. A high-precision instrument clamping aid with rapid switching capability according to claim 1, characterized in that: The wear-resistant sleeves I (7) and II (18) of the drive shaft are both made of tin bronze.

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