Special clamp tool for machining automobile shifting fork

Abstract

The invention discloses a clamp tool special for machining an automobile shifting fork. The clamp tool comprises a workbench, and a positioning shaft is fixed to the upper portion of the workbench. Through an external force pressing plate and a connecting frame, when a shifting fork is mounted on a workbench from top to bottom, a sliding block is driven by a driving rod to slide, so that a scraper blade scrapes lubricating oil, cutting fluid or cutting residues accumulated on the workbench, and when the scraper blade passes through a positioning shaft, an inner scraping strip slides into a storage groove under the pushing of the positioning shaft, so that the inner scraping strip is driven to rotate; the workbench is comprehensively cleaned around the edge of the positioning shaft, meanwhile, the moving track of the scraping plate is changed through traction of the single-slope block, foreign matter on the scraping plate can be scraped away through the cleaning strip, the situation that the workbench is stained again when the scraping plate passes through the workbench in the later period is avoided, and external energy consumption does not need to be consumed; the work of comprehensively cleaning the table top of the workbench after one-time use is achieved only through disassembly and assembly between the clamp and the shifting fork, the cleaning work time is not additionally increased, and the situation that the clamping force of the clamp on the shifting fork is affected, and consequently the quality of the shifting fork in the machining process is reduced is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of special clamps for shift forks, and in particular to a special clamp tooling for processing automobile shift forks. Background Art

[0002] The automobile shift fork is one of the key components of the manual transmission. It is responsible for switching between different gears. It controls the switching of different gears in the transmission through the operation of the shift lever. When the driver moves the shift lever, the force applied to the shift fork causes it to rotate around the connecting pin, prying the gear or synchronizer connected to the claw. Through this process, the shift fork can engage or disengage the gears, thereby achieving different transmission ratios. When processing the automobile shift fork, the use of a shift fork fixture is indispensable to complete the processing and positioning of the shift fork in order to maintain the stability of the shift fork during processing.

[0003] The existing publication number CN208246316U discloses a new type of special clamp for a shift fork, including a workbench, a positioning clamp, and a pressing clamp, wherein the positioning clamp and the pressing clamp are located on the workbench, and is characterized in that: a clamping hole is provided on the workbench, and the clamping hole is located below the clamping arc on the positioning clamp; the rear part of the positioning clamp is a side clamping part; the front part of both sides of the pressing clamp is a chamfered surface, and clamping blocks are fixedly arranged on both sides of the pressing clamp; there are clamping rails on both sides of the pressing clamp fixed on the workbench, and the pressing clamp is clamped between the clamping rails through the clamping blocks on both sides; the rear part of the pressing clamp has a fixing seat with screw holes fixed on the workbench. The above-mentioned clamp has a reasonable structure, ingenious design, and simple use method. People only need to place the shift fork between the positioning clamp and the pressing clamp of the device, and the stable clamping of the shift fork can be achieved by adjusting the studs, so as to make preparatory preparations for the precise processing of the shift fork.

[0004] The above-mentioned special clamp for the shift fork does not have a function of automatically cleaning the table top. After each shift fork is processed, a certain amount of lubricating oil, cutting fluid and cutting debris will remain and accumulate on the workbench. If they are not cleaned from the workbench, the clamping force and accuracy of the clamp on the next shift fork will be affected. The clamping force of the clamp on the shift fork is affected, which will directly affect the quality of the shift fork processing. Summary of the invention

[0005] The purpose of the present invention is to provide a special fixture for processing automobile shift forks, which solves the problem that the traditional special fixture for processing automobile shift forks has no function of automatically cleaning the table top, and the residual accumulated lubricating oil, cutting fluid and cutting debris on the workbench will affect the clamping force and accuracy of the fixture on the next shift fork. The clamping force of the fixture on the shift fork is affected, which will directly affect the quality of the shift fork during processing.

[0006] The present invention solves the above technical problems through the following technical solutions, which include: A workbench, a positioning shaft is fixed on the top of the workbench, and a shift fork body is arranged outside the positioning shaft; A self-cleaning component, which is arranged on both sides of the workbench, and is used to automatically remove obstacles and pollutants above the workbench. The self-cleaning component includes a cleaning member, and the cleaning member includes a hollow support plate and a mounting plate respectively fixed on both sides of the workbench, and the hollow support plate and the mounting plate are provided with limiting grooves inside, and support arms are slidably arranged inside the two limiting grooves, and one end of the two support arms is fixedly connected, and a scraper is provided between the two support arms; One side of the hollow support plate is provided with two vertical through slots, a plurality of stabilizing rods are fixed inside the hollow support plate, and a first spring is sleeved on the outside of the plurality of stabilizing rods, a lifting plate slides between the outsides of the plurality of stabilizing rods, a connecting frame slides between the insides of the two vertical through slots, the connecting frame is fixedly connected to the lifting plate, an external force pressure plate is fixed to one side of the connecting frame, a sliding block slides inside the hollow support plate, a driving rod is rotated above the sliding block, and one end of the driving rod rotates below the lifting plate, a transverse through slot is provided on one side of the hollow support plate, and one side of the sliding block is fixedly connected to one of the support arms by a connecting arm sliding in the transverse through slot.

[0007] Preferably, an inwardly recessed hidden groove is provided above the workbench, a plurality of second springs are fixed inside the inwardly recessed hidden groove, a hidden plate is slid inside the inwardly recessed hidden groove, and one end of the plurality of second springs are fixed below the hidden plate.

[0008] Preferably, the scraper includes a first scraper strip and a second scraper strip, and a receiving groove is provided at one end of the first scraper strip and the second scraper strip, two third springs are fixed inside the two receiving grooves, inner scrapers are slid inside the two receiving grooves, and multiple stainless steel balls are movably arranged above the two inner scrapers.

[0009] Preferably, the self-cleaning assembly further comprises an anti-reverse fouling member, and the anti-reverse fouling member is used to prevent the scraper from soiling the workbench surface when the scraper moves repeatedly on the workbench.

[0010] Preferably, mounting holes are provided on the tops of the first scraper strip and the second scraper strip, and the anti-fouling member comprises an inner concave fixing box fixed to one end of the two support arms, a double-bevel block fixed inside the two mounting holes, a single-bevel block fixed to one side of the hollow support plate and one side of the mounting plate, and two cleaning strips fixed between the hollow support plate and the mounting plate; A connecting rod is fixed inside the two concave fixing boxes, and a fourth spring is sleeved outside the two connecting rods. The first scraper strip and the second scraper strip slide on the outside of the two connecting rods respectively.

[0011] Preferably, two inclined drainage grooves are provided above the workbench.

[0012] Preferably, a mounting platform is fixed on one side of the mounting plate, an electric push rod is fixed above the mounting platform, and a positioning block is fixed on one end of a telescopic rod of the electric push rod.

[0013] Preferably, two fixing plates are fixed above the mounting platform, guide rods are slidably disposed inside the two fixing plates, and one end of the two guide rods is fixed to one side of the positioning block.

[0014] Preferably, the outer surface of the positioning block is provided with a non-slip rubber layer.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The external force pressure plate and the connecting frame are used to realize that when the shift fork is installed on the workbench from top to bottom, the slider is driven to slide by the driving rod, so that the scraper can scrape off the lubricating oil, cutting fluid or cutting debris accumulated on the workbench, and when the scraper passes the positioning shaft, the inner scraper strip slides into the receiving groove under the push of the positioning shaft, and cleans the workbench completely around the edge of the positioning shaft. At the same time, the movement trajectory of the scraper is changed by the traction of the single bevel block, so that the cleaning strip can scrape off foreign matter on the scraper, and avoid the workbench from being soiled again when the scraper passes the workbench later. No external energy consumption is required, and the workbench surface can be completely cleaned after one use only through the disassembly and assembly between the clamp and the shift fork, without adding extra time for the cleaning work, to prevent the clamping force of the clamp on the shift fork from being affected and reducing the quality of the shift fork during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a partial cross-sectional view of the present invention; Figure 3 It is a partial cross-sectional view of the hollow support plate in the present invention; Figure 4 It is a partial structural cross-sectional view of the shift fork after being installed in the clamp in the present invention; Figure 5 It is a split cross-sectional view of the self-cleaning assembly after the external force pressure plate of the present invention is pressed down; Figure 6 for Figure 5 Enlarged schematic diagram of part A in the middle.

[0017] 1. Workbench; 2. Positioning shaft; 3. Fork body; 4. Self-cleaning assembly; 41. Hollow support plate; 42. Mounting plate; 43. Limiting groove; 44. Support arm; 45. Scraper; 451. First scraper; 452. Second scraper; 453. Storage groove; 454. Third spring; 455. Inner scraper; 456. Stainless steel ball; 46. Vertical through groove; 47. Stabilizing rod; 48. First spring; 49. Lifting plate; 410. Connecting frame; 411. External force pressure plate; 412. Sliding block; 413. Driving rod; 414. Horizontal through groove; 415. Inner concave fixing box; 416. Double bevel block; 417. Single bevel block; 418. Cleaning strip; 419. Connecting rod; 420. Fourth spring; 5. Inwardly concave hidden groove; 6. Second spring; 7. Hidden plate; 8. Mounting hole; 9. Inclined drainage groove; 10. Mounting table; 11. Electric push rod; 12. Positioning block; 13. Fixed plate; 14. Guide rod; 15. Anti-slip rubber layer. DETAILED DESCRIPTION

[0018] The above and other technical features and advantages of the present invention are described in more detail below in conjunction with the accompanying drawings.

[0019] The present invention provides a technical solution: a special fixture for processing automobile forks, such as Figure 1-6 As shown, it includes a workbench 1 and a self-cleaning component 4, a positioning shaft 2 is fixed on the top of the workbench 1, a fork body 3 is arranged outside the positioning shaft 2, a positioning hole on the fork body 3 is inserted on the positioning shaft 2, a threaded groove is provided in the center of the shaft above the positioning shaft 2, and the pressure plate is fixed to the positioning shaft 2 by screwing the threaded column and the threaded groove, so that the fork body 3 is fixed to the outside of the positioning shaft 2, two inclined drainage grooves 9 are provided above the workbench 1, a mounting platform 10 is fixed on one side of the mounting plate 42, an electric push rod 11 is fixed above the mounting platform 10, a positioning block 12 is fixed at one end of the telescopic rod of the electric push rod 11, and a positioning block 12 is fixed on the top of the mounting platform 10. There are two fixed plates 13, and guide rods 14 are slidably arranged inside the two fixed plates 13. One end of the two guide rods 14 is fixed to one side of the positioning block 12. The outer surface of the positioning block 12 is provided with a non-slip rubber layer 15. The positioning block 12 is driven by the extension and retraction of the electric push rod 11 to achieve straight sliding under the guidance of the guide rod 14. The positioning block 12 is pushed by the electric push rod 11 to enter the inner side of the fork body 3 to complete the fixing and clamping of the fork body 3. When the fork body 3 needs to be removed later, the electric push rod 11 is first used to pull the positioning block 12 back to its original position (that is, the positioning block 12 will not hinder the movement of a support arm 44 adjacent to it).

[0020] like Figure 1-6As shown, the self-cleaning component 4 is arranged on both sides of the workbench 1. The self-cleaning component 4 is used to automatically remove obstacles and contaminants above the workbench 1 to prevent lubricating oil or cutting fluid from accumulating on the surface of the workbench 1 during processing, thereby reducing the clamping force and precision of the fixture. The self-cleaning component 4 includes a cleaning member, and the cleaning member includes a hollow support plate 41 and a mounting plate 42 respectively fixed on both sides of the workbench 1. Limiting grooves 43 are provided inside the hollow support plate 41 and the mounting plate 42, and support arms 44 are slid inside the two limiting grooves 43. The hollow support plate 41 and the mounting plate 42 are spaced a certain distance from the workbench 1, and the two spacing sizes are the same. The spacing size is adapted to the size of the support arm 44 located between the hollow support plate 41 and the workbench 1. The two support arms 44 are fixedly connected at one end below the workbench 1, and a scraper 45 is arranged between the two support arms 44. The scraper 45 moves on the upper surface of the workbench 1 to remove the accumulated lubricating oil, cutting fluid or cutting debris.

[0021] like Figure 1-6 As shown, one side of the hollow support plate 41 is provided with two vertical through slots 46, a plurality of stabilizing rods 47 are fixed inside the hollow support plate 41, the outsides of the plurality of stabilizing rods 47 are all sleeved with first springs 48, a lifting plate 49 is slidably provided between the outsides of the plurality of stabilizing rods 47, one end of the plurality of first springs 48 are fixed below the lifting plate 49, when the first springs 48 are at their original length, the lifting plate 49 is at the top inside the hollow support plate 41, a connecting frame 410 is slidably provided between the insides of the two vertical through slots 46, the connecting frame 410 is fixedly connected to the lifting plate 49, an external force applying plate 411 is fixedly provided on one side of the connecting frame 410, the external force applying plate 411 is above the workbench 1, and its length is to the edge of the positioning shaft 2, an inner concave hidden groove 5 is provided above the workbench 1, the position of the inner concave hidden groove 5 corresponds to the external force applying plate 411 up and down, a plurality of second springs 6 are fixed inside the inner concave hidden groove 5, The hidden plate 7 has the same size as the external force pressure plate 411, and one end of each of the multiple second springs 6 is fixed under the hidden plate 7. The second springs 6 can be arranged in a row in the middle under the hidden plate 7, or two rows can be arranged at corresponding positions front and back under the hidden plate 7. When the fork body 3 is sleeved on the positioning shaft 2 from top to bottom and is tightly attached to the upper surface of the workbench 1, the external force pressure plate 411 is pressed by the fork body 3 into the concave hidden groove 5, and the upper surface is flush with the workbench 1, so that the hidden plate 7 is squeezed by the second spring 6 to slide into the concave hidden groove 5. After the external force pressure plate 411 moves up, the second spring 6 restores its original length and pushes the hidden plate 7 upward, so that the upper surface of the hidden plate 7 is flush with the upper surface of the workbench 1, so as to avoid foreign matter being stuck in the concave hidden groove 5 when the scraper 45 scrapes off the lubricating oil, cutting fluid or cutting debris on the upper surface of the workbench 1 in the later stage, affecting the subsequent external force pressure plate 411 being stuck in the concave hidden groove 5 and the workbench 1 remaining flush.

[0022] like Figure 1-6 As shown, a slide groove is provided on the inner surface of the hollow support plate 41, and a slider 412 is slidably arranged inside the hollow support plate 41. The slider 412 slides in the slide groove by means of a slide bar, and a rolling ball is arranged on the slide bar to slide in the slide groove, so as to easily change the position of the slider 412 in the slide groove. A driving rod 413 is rotated above the slider 412, and one end of the driving rod 413 rotates below the lifting plate 49. When the lifting plate 49 is at the uppermost position in the hollow support plate 41, the driving rod 413 is in a vertical state. When the lifting plate 49 moves up and down, the driving rod 413 is relied on to change the position of the slider 412 in the slide groove. A transverse through groove 414 is provided on one side of the hollow support plate 41, and the position of the transverse through groove 414 is located at the corresponding position of the slider 412. One side of the slider 412 is fixedly connected to one of the support arms 44 through a connecting arm sliding in the transverse through groove 414, and the position of the support arm 44 on the workbench 1 is changed by the sliding of the slider 412.

[0023] like Figure 1-6 As shown, the scraper 45 includes a first scraper strip 451 and a second scraper strip 452. A receiving groove 453 is provided at one end of each of the first scraper strip 451 and the second scraper strip 452. Two third springs 454 are fixed inside the two receiving grooves 453. An inner scraper strip 455 is slidably provided inside the two receiving grooves 453. The lower part of the inner scraper strip 455 is flush with the lower part of the first scraper strip 451 and the second scraper strip 452. A plurality of stainless steel balls 456 are movably provided above the two inner scraper strips 455. The stainless steel balls 456 are used to move the inner scraper strips 455. 6 increases the ease with which the inner scraper strip 455 slides in the receiving groove 453. When the third spring 454 is at its original length, the opposite ends of the two inner scraper strips 455 are abutted and closed, and the closed abutting ends of the two inner scraper strips 455 correspond to the position of the middle axis of the positioning shaft 2. Since the abutting ends of the two inner scraper strips 455 are set to a certain arc, when the two inner scraper strips 455 pass through the positioning shaft 2, they will be gradually pushed into the receiving groove 453 along the smooth outer surface of the positioning shaft 2, so as to pass through the positioning shaft 2 smoothly.

[0024] like Figure 1-6As shown, the self-cleaning assembly 4 also includes an anti-fouling member, which is used to prevent the scraper 45 from dirtying the workbench 1 when it moves repeatedly on the workbench 1. The first scraper strip 451 and the second scraper strip 452 are both provided with mounting holes 8 above them. The anti-fouling member includes a concave fixing box 415 fixed to one end of the two support arms 44, a double-bevel block 416 fixed inside the two mounting holes 8, a single-bevel block 417 fixed to one side of the hollow support plate 41 and one side of the mounting plate 42, and a fixed Two cleaning strips 418 are fixed between the hollow support plate 41 and the mounting plate 42. There are two single bevel blocks 417 on the hollow support plate 41 and the mounting plate 42, and the single bevel blocks 417 are located above the cleaning strips 418. The insides of the two concave fixing boxes 415 are fixed with connecting rods 419. The outsides of the two connecting rods 419 are sleeved with fourth springs 420. The first scraper strip 451 and the second scraper strip 452 slide on the outsides of the two connecting rods 419 respectively. The two inclined surfaces on the double-bevel block 416 are located below the fourth spring 420, and the inclination of the two inclined surfaces is consistent with that of the inclined surface of the single-bevel block 417. Two inclined surfaces are arranged below the first scraper strip 451 and the second scraper strip 452, and the two inclined surfaces are consistent with the inclination of the inclined surface of the cleaning strip 418. The cleaning strip 418 is provided with a certain protrusion corresponding to the position of the two inner scraper strips 455. The protrusion position and shape can be accurately and accurately fitted on the inclined surface of the inner scraper strip 455 when the scraper 45 moves to fit the inclined surface of the cleaning strip 418, so as to scrape off the lubricating oil, cutting fluid or cutting debris on its inclined surface. When the scraper 45 just moves to the edge of the single-bevel block 417 and the cleaning strip 418 along with the support arm 44, the upper edge of the double-bevel block 416 corresponds to the lower edge of the single-bevel block 417, and the lower edge of the cleaning strip 418 corresponds to the upper edge of the inclined surfaces of the first scraper strip 451, the second scraper strip 452 and the two inner scraper strips 455.

[0025] When in use, the positioning hole on the fork body 3 is pressed downward from above the external force pressure plate 411 so that it is correspondingly inserted into the positioning shaft 2. During the downward pressing process of the fork body 3, the external force pressure plate 411 will drive the lifting plate 49 to slide down through the connecting frame 410 and squeeze the first spring 48. When the lifting plate 49 slides down, the end of the driving rod 413 connected to it gradually deflects, and the other end will push the slider 412 to slide in the slide groove through the end connected to the slider 412 during the deflection. The slider 412 will drive the two support arms 44 to slide in the limiting groove 43, and the support arms 44 will drive the scraper 45 (i.e., the first scraper strip 451, the second scraper strip 452 and the two The inner scraper bar 455 moves on the workbench 1, and the lubricating oil, cutting fluid or cutting debris accumulated on the workbench 1 due to processing are scraped by the first scraper bar 451, the second scraper bar 452 and the two inner scraper bars 455 to an edge of the workbench 1 where the inclined drainage groove 9 is opened. When the scraper 45 reaches the positioning shaft 2, the two inner scraper bars 455 will pass along the smooth outer surface of the positioning shaft 2 and gradually be pushed into the receiving groove 453 during the movement to squeeze the third spring 454, so that the scraper 45 as a whole can pass through the positioning shaft 2 smoothly, and the cleaning work on the workbench 1 will not be affected by the existence of the positioning shaft 2, and foreign matter at the edge of the positioning shaft 2 can be scraped off.

[0026] Until the external force pressure plate 411 is pressed by the fork body 3 into the concave hidden groove 5, the upper surface is flush with the workbench 1, and the hidden plate 7 squeezes the second spring 6 to slide into the concave hidden groove 5, at this time, the fork body 3 will be attached to the upper surface of the workbench 1, and the scraper 45 and the support arm 44 will move to an edge of the workbench 1 where the cleaning strip 418 is installed. When the scraper 45 just moves to the edge of the single bevel block 417 and the cleaning strip 418 with the support arm 44, the upper edge of the double bevel block 416 corresponds to the lower edge of the single bevel block 417, and the lower edge of the cleaning strip 418 and the first scraper strip 451 , the second scraper bar 452 and the upper edges of the inclined surfaces of the two inner scraper bar 455 correspond to each other. As the support arm 44 continues to move, the double-bevel block 416 will change the moving trajectory under the tilt limit of the single-bevel block 417, driving the first scraper bar 451 and the second scraper bar 452 to move up a part along the connecting rod 419 and squeeze the fourth spring 420. When the first scraper bar 451, the second scraper bar 452 and the inner scraper bar 455 move up, the lubricating oil, cutting fluid or cutting debris on the inclined surfaces of the three will be scraped off by the cleaning strip 418, and the scraped foreign matter will slide down the workbench 1 along the inclined drainage groove 9.

[0027] The pressure plate is fixed on the positioning shaft 2 by screwing the threaded column and the threaded groove, so that the fork body 3 is fixed to the outside of the positioning shaft 2, and then the positioning block 12 is extended and retracted by the electric push rod 11 to enter the inner side of the fork body 3 under the guidance of the guide rod 14 to complete the fixed clamping of the fork body 3, and the fork body 3 can be processed. After the processing is completed, the fork body 3 is removed. After the fork body 3 is removed from the fixture, the force on the external force pressure plate 411 disappears, and the lifting plate 49 is raised to the original position under the elastic force of the first spring 48. The lifting plate 49 drives the driving rod 413 to restore to its original state. At this time, one end of the driving rod 413 pulls the slider 412 to slide to its original state. At the starting position, the slider 412 drives the support arm 44 and the scraper 45 to pass over the workbench 1, scraping the generated lubricating oil, cutting fluid or cutting debris to the inclined drainage groove 9 and dropping it off the workbench 1, and when the scraper 45 reaches the corresponding cleaning bar 418, it repeats the path of the moving trajectory pulled by the single inclined block 417, so that the cleaning bar 418 can scrape off the lubricating oil, cutting fluid or cutting debris on the inclined surfaces of the first scraper bar 451, the second scraper bar 452 and the inner scraper bar 455. There is no need to rely on external energy consumption to drive the scraper 45 to clean the workbench 1, and the top of the workbench 1 can be automatically cleaned when the clamp and the fork body 3 are connected and separated.

[0028] The above description is only a preferred embodiment of the present invention, which is only illustrative and not restrictive of the present invention. Those skilled in the art understand that many changes, modifications, and even equivalences may be made to the present invention within the spirit and scope defined by the claims of the present invention, but all of them will fall within the scope of protection of the present invention.

Claims

1. Special fixture for automobile fork processing, characterized by: include: A workbench (1), a positioning shaft (2) being fixed above the workbench (1), and a shift fork body (3) being arranged outside the positioning shaft (2); A self-cleaning component (4), the self-cleaning component (4) being arranged on both sides of the workbench (1), the self-cleaning component (4) being used to automatically remove obstructing contaminants above the workbench (1), the self-cleaning component (4) comprising a cleaning member, the cleaning member comprising a hollow support plate (41) and a mounting plate (42) respectively fixed on both sides of the workbench (1), the hollow support plate (41) and the mounting plate (42) both having limiting grooves (43) disposed therein, support arms (44) being slidably disposed inside the two limiting grooves (43), one end of the two support arms (44) being fixedly connected, and a scraper (45) being disposed between the two support arms (44); Two vertical through slots (46) are formed on one side of the hollow support plate (41); a plurality of stabilizing rods (47) are fixed inside the hollow support plate (41); the outsides of the plurality of stabilizing rods (47) are sleeved with first springs (48); a lifting plate (49) slides between the outsides of the plurality of stabilizing rods (47); a connecting frame (410) slides between the insides of the two vertical through slots (46); the connecting frame (410) is fixedly connected to the lifting plate (49); the connecting frame (410) is connected to the lifting plate (49); and the connecting frame (410) is connected to the lifting plate (49). 0), an external force pressure plate (411) is fixed on one side of the hollow support plate (41), a slider (412) is slidably arranged inside the hollow support plate (41), a driving rod (413) is rotatably arranged above the slider (412), one end of the driving rod (413) is rotated below the lifting plate (49), a transverse through groove (414) is provided on one side of the hollow support plate (41), and one side of the slider (412) is fixedly connected to one of the support arms (44) via a connecting arm that slides in the transverse through groove (414).

2. The special fixture for automobile fork processing according to claim 1 is characterized in that: An inner concave hidden groove (5) is provided above the workbench (1), a plurality of second springs (6) are fixed inside the inner concave hidden groove (5), a hidden plate (7) is slid inside the inner concave hidden groove (5), and one end of each of the plurality of second springs (6) is fixed below the hidden plate (7).

3. The special fixture for machining automobile forks according to claim 2 is characterized in that: The scraper (45) comprises a first scraper strip (451) and a second scraper strip (452); one end of each of the first scraper strip (451) and the second scraper strip (452) is provided with a receiving groove (453); two third springs (454) are fixed inside the two receiving grooves (453); an inner scraper strip (455) is slid inside the two receiving grooves (453); and a plurality of stainless steel balls (456) are movably arranged above the two inner scraper strips (455).

4. The special fixture for machining automobile forks according to claim 3 is characterized in that: The self-cleaning component (4) further comprises an anti-fouling component, which is used to prevent the scraper (45) from soiling the surface of the workbench (1) when it moves repeatedly on the workbench (1).

5. The special fixture for machining automobile forks according to claim 4 is characterized in that: A mounting hole (8) is provided above each of the first scraper strip (451) and the second scraper strip (452), and the anti-fouling component comprises an inner concave fixing box (415) fixed to one end of the two support arms (44), a double-bevel block (416) fixed inside the two mounting holes (8), a single-bevel block (417) fixed to one side of the hollow support plate (41) and one side of the mounting plate (42), and two cleaning strips (418) fixed between the hollow support plate (41) and the mounting plate (42); A connecting rod (419) is fixed inside the two concave fixing boxes (415), a fourth spring (420) is sleeved outside the two connecting rods (419), and the first scraper (451) and the second scraper (452) slide outside the two connecting rods (419), respectively.

6. The special fixture for machining automobile forks according to claim 1, characterized in that: Two inclined drainage grooves (9) are provided above the workbench (1).

7. The special fixture for machining automobile forks according to claim 1, characterized in that: A mounting platform (10) is fixed to one side of the mounting plate (42), an electric push rod (11) is fixed above the mounting platform (10), and a positioning block (12) is fixed to one end of a telescopic rod of the electric push rod (11).

8. The special fixture for machining automobile forks according to claim 7, characterized in that: Two fixing plates (13) are fixed above the mounting platform (10), guide rods (14) are slidably disposed inside the two fixing plates (13), and one end of the two guide rods (14) is fixed to one side of the positioning block (12).

9. The special fixture for machining automobile forks according to claim 8, characterized in that: The outer surface of the positioning block (12) is provided with an anti-slip rubber layer (15).

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