Positioning fixture for axle assembly processing

Abstract

The positioning fixture for axle assembly and processing relates to the technical field of clamping and positioning tooling, and comprises a horizontally arranged bottom square frame, on which a flip clamping assembly, a clamping transfer assembly, a swing side clamping assembly and a top support positioning assembly are respectively arranged. The invention solves the problems that the tooling fixture in the traditional technology has a single clamping mode when used for the assembly of axle components, which is difficult to adapt to the clamping of different axle components, the positioning fixture has poor adjustability, cannot be used for the clamping and positioning of multiple axle components in different assembly modes, and the axle components are inconvenient to continuously transfer during the assembly process.

Description

Technical Field

[0001] The invention relates to the technical field of clamping and positioning tooling, and in particular to a positioning fixture for axle assembly processing. Background Art

[0002] The axle of a car is connected to the frame (or load-bearing body) through the suspension, and wheels are installed at both ends. The function of the axle is to bear the load of the car and maintain the normal driving of the car on the road.

[0003] According to the different driving modes, axles can be divided into four types: steering axles, driving axles, steering driving axles and supporting axles. Among them, the function of the driving axle is to transmit the driving force from the engine to the driving wheels, achieving the effect of reducing speed and increasing torque, and changing the direction of power transmission. The driving axle structure includes the intermediate axle housing, leaf spring seat, half-axle sleeve, rear cover and main reducer housing. These parts are combined and fixed together in a specific way to form an integrated driving axle.

[0004] Furthermore, since the overall axle is composed of many parts and different parts are fixed in different ways, complex fixtures are needed to clamp and position the axle parts when assembling the drive axle, so as to improve the assembly accuracy of the axle.

[0005] However, due to the simple structure and single function of the existing clamping tooling, when it is used for clamping and positioning different parts during the axle assembly process, many problems often arise, including:

[0006] 1. The clamping method is single and cannot be used for adaptive clamping of different axle components.

[0007] 2. The positioning fixture has poor adjustability and is difficult to adapt to the clamping and positioning of multiple axle components in different assembly methods.

[0008] 3. The problem of inconvenience in continuously transferring axle components between multiple fixed assembly stations.

[0009] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0010] In view of the defects in the prior art, the present invention provides a positioning fixture for axle assembly processing, which is used to solve the problems that the tooling fixture in the traditional technology is used for the combined assembly of axle components, such as a single clamping method, difficulty in adapting to the clamping of different axle components, poor adjustability of the positioning fixture, and inability to be used for the clamping and positioning of multiple axle components in different assembly methods, as well as the inconvenience of continuous transfer of axle components during the assembly process.

[0011] To achieve the above object, the present invention provides the following technical solutions:

[0012] The positioning fixture for axle assembly processing comprises a horizontally arranged bottom square frame, on which a flip clamping assembly, a clamping transfer assembly, a swing side clamping assembly and a top support positioning assembly are respectively arranged.

[0013] As an optimized solution, the flip clamping assembly includes a U-shaped support frame, the lower end of the U-shaped support frame is fixedly connected to the longitudinal inner wall close to one side of the bottom square frame, and two symmetrical lifting vertical plates are longitudinally arranged above the U-shaped support frame. Two groups of transversely symmetrical electric telescopic cylinders are respectively arranged between the U-shaped support frame and each of the lifting vertical plates, the lower fixed end of the electric telescopic cylinder is fixedly connected to the upper end surface of the U-shaped support frame, and the upper telescopic end of the electric telescopic cylinder is fixedly connected to the lower surface of the lifting vertical plate.

[0014] As an optimized solution, a flip driving motor is fixedly connected to the longitudinal outer end face of each lifting vertical plate, a flip pallet is rotatably provided between the two lifting vertical plates, and the flip pallet is a square plate extending longitudinally, and the output shaft end of each flip driving motor passes through the lifting vertical plate and is fixedly connected to the longitudinal side end face of the flip pallet.

[0015] As an optimized solution, two symmetrical supporting side plates are fixedly connected to the upper surface of the flip pallet along the longitudinal direction, each supporting side plate is fixedly connected to a longitudinal clamping telescopic cylinder, and the telescopic end of each clamping telescopic cylinder is fixedly connected to a clamping circular plate.

[0016] As an optimized solution, the clamping and transferring assembly includes a limiting slide rail, which is a U-shaped rail with an opening facing downward, and the lower ends of the limiting slide rail are respectively fixed to the lateral outer end faces of the bottom square frame.

[0017] As an optimized solution, a transfer slide is provided on the sliding sleeve of the limiting slide rail, and the transfer slide is a square seat with a transverse opening. A sliding drive motor is fixedly connected to the inner top surface of the limiting slide rail near the end, and a transversely extending drive threaded rod is fixedly connected to the end of the output shaft of the sliding drive motor. The end of the drive threaded rod is rotatably supported on the transverse inner side wall of the limiting slide rail, and the drive threaded rod passes through and is threadedly connected to the transfer slide.

[0018] As an optimized solution, a steering drive motor is fixedly connected to the inner top surface of the transfer slide, and the end of the output shaft of the steering drive motor passes upward through the transfer slide and is fixedly connected to a clamping limit seat. The clamping limit seat is a U-shaped seat with an upward opening, and a U-shaped clamping seat is telescopically provided on each lateral inner side wall of the clamping limit seat.

[0019] As an optimized solution, the top support positioning assembly includes a horizontally arranged square positioning frame, a longitudinally extending support plate is provided below the square positioning frame, and both ends of the support plate are respectively fixed to the longitudinal inner wall of the bottom square frame.

[0020] As an optimized solution, the lower end of the square positioning frame is fixedly connected to two symmetrical fixed base plates along the longitudinal direction, and the upper surface of the support plate is fixedly connected to two symmetrical lifting and telescopic cylinders along the longitudinal direction, and the upper telescopic end of each lifting and telescopic cylinder is respectively fixed to the lower surface of the fixed base plate.

[0021] As an optimized solution, two laterally symmetrical top support telescopic cylinders are fixed on each of the fixed bottom plates, and a strip-shaped top support plate is fixedly connected to the upper telescopic ends of the two longitudinally opposite top support telescopic cylinders.

[0022] As an optimized solution, two symmetrical positioning telescopic cylinders are fixedly connected to each longitudinal inner side wall of the square positioning frame, and positioning clamping plates are fixedly connected to the telescopic ends of the two positioning telescopic cylinders.

[0023] As an optimized solution, the swing side clamp assembly is arranged between the flip clamp assembly and the top support positioning assembly, and the swing side clamp assembly includes four centrally symmetrical L-shaped sockets, and the four L-shaped sockets are respectively fixedly connected to the two longitudinal outer end faces of the bottom square frame, and the upper surface of each L-shaped socket is respectively fixedly connected to a swing mounting plate, and the outer end face of each swing mounting plate is respectively fixedly connected to a swing drive motor, and a swing side plate is provided between the two laterally opposite swing mounting plates, and the output shaft end of the swing drive motor passes through the swing mounting plate and is fixedly connected to the side end face of the swing side plate near the lower part.

[0024] As an optimized solution, a rotating drive motor is fixedly connected to the outer wall of each swinging side plate near the upper end, and the output shaft end of the rotating drive motor passes through the swinging side plate and is fixedly connected to a circular turntable. The circular turntable is arranged close to the inner wall of the swinging side plate, and four center-symmetrical limit blocks are provided on the outer side of the circular turntable. The limit blocks are fixedly connected to the inner wall of the swinging side plate.

[0025] As an optimized solution, a longitudinal displacement telescopic cylinder is fixedly connected to the center of the outer end surface of each circular turntable, the telescopic end of the displacement telescopic cylinder is fixedly connected to a clamping chuck, and four cross-shaped and symmetrical clamping grooves are opened on the inner end surface of the clamping chuck, an adjusting telescopic cylinder is fixedly connected to the inner end surface of each clamping groove, and the telescopic end of each adjusting telescopic cylinder is fixedly connected to an arc-shaped clamping plate.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The flip clamping assembly, the clamping transfer assembly, the swing side clamping assembly and the top support positioning assembly provided in the present invention can assemble a plurality of scattered axle components into an integral driving axle through linkage cooperation with each other.

[0028] The flip clamping assembly provided in the present invention is mainly used for clamping and positioning the intermediate bridge housing of the vehicle axle, and after completing the clamping and positioning of the intermediate bridge housing, the leaf spring seat is fixedly clamped on the intermediate bridge housing; further, the flip pallet in the flip clamping assembly can be flipped around the axis under the drive of the flip driving motor, thereby flipping the intermediate bridge housing with the leaf spring seat clamped to a downward position, and then transferring it to the clamping transfer assembly for subsequent processing and clamping.

[0029] The clamping transfer assembly provided in the present invention can realize the transfer clamping of the axle assembly components, and drive the clamped axle components to continuously transfer between the flip clamping assembly, the swing side clamping assembly and the top support positioning assembly. Specifically, the clamping transfer assembly includes a transfer slide, which is slidably mounted on the limit slide rail, and the transfer slide as a whole can slide laterally under the drive of the sliding drive motor and the driving threaded rod to change the clamping assembly position of the axle components. Furthermore, a clamping limit seat is rotatably provided on the upper surface of the transfer slide, and a U-shaped card seat for clamping the axle components is telescopically provided on the clamping limit seat, and the clamping limit seat can rotate around the axis under the control of the steering drive motor, thereby realizing the steering clamping during the axle assembly process.

[0030] The swing side clamp assembly provided in the present invention can realize the adaptive clamping and positioning of the split half-axle sleeve, and assemble the two according to the connection method of the half-axle sleeve and the intermediate bridge housing. Specifically, the swing side clamp assembly includes four L-shaped clamping seats, and two L-shaped clamping seats opposite to each other in the transverse direction are respectively fixed with swing mounting plates, and a swing side plate is provided between the two swing mounting plates. The swing side plate can be switched between a horizontal state and a vertical state under the control of a swing drive motor. When the swing side plate is swung to a horizontal state, the end of the half-axle sleeve can be fixedly clamped on the clamping chuck and clamped and fixed by a telescopic arc-shaped clamping plate. When the swing side plate is swung to a vertical state, the half-axle sleeve and the intermediate bridge housing can be clamped and fixed, and according to the connection method of the half-axle sleeve and the intermediate bridge housing, the two can be twisted, clamped or welded.

[0031] The top support positioning assembly provided in the present invention can receive the axle body components transferred and transported by the clamping and transferring assembly, and by controlling the extension of the positioning telescopic cylinder, the axle body is clamped by the positioning clamping plate, and the axle rear cover and the main reducer housing are welded and fixed to the axle body. After welding is completed, the top support telescopic cylinder is controlled to extend, and the strip top support plate is used to push the assembled entire axle upward to facilitate subsequent removal of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0033] Figure 1 It is a partial half-section schematic diagram of each component in the present invention in the top view direction;

[0034] Figure 2 It is a schematic cross-sectional view of the internal structure of each component in the present invention in the main viewing direction;

[0035] Figure 3 It is a schematic cross-sectional view of the internal structure of the flip clamping assembly and the clamping transfer assembly in the present invention in the side view direction;

[0036] Figure 4 It is a schematic cross-sectional view of the internal structure of the top support positioning assembly in the present invention in the side view direction;

[0037] Figure 5 It is a schematic diagram of the external overall structure of the clamping and transferring assembly and the swinging side clamping assembly in the present invention in the side view direction;

[0038] Figure 6 It is a schematic diagram of the external overall structure of the present invention in the main viewing direction;

[0039] Figure 7 It is a schematic diagram of the external overall structure of the present invention when viewed from above.

[0040] In the figure: 1-bottom square frame, 2-U-shaped support frame, 3-lifting vertical plate, 4-electric telescopic cylinder, 5-flipping drive motor, 6-flipping pallet, 7-support side plate, 8-clamping telescopic cylinder, 9-clamping circular plate, 10-limiting slide rail, 11-transfer slide seat, 12-sliding drive motor, 13-driving threaded rod, 14-steering drive motor, 15-clamping limit seat, 16-U-shaped card seat, 17-square positioning frame, 18-supporting pallet, 19 -Fixed bottom plate, 20-lifting telescopic cylinder, 21-supporting telescopic cylinder, 22-strip supporting plate, 23-positioning telescopic cylinder, 24-positioning clamping plate, 25-L-shaped holder, 26-swinging mounting plate, 27-swinging drive motor, 28-swinging side plate, 29-rotating drive motor, 30-circular turntable, 31-limiting block, 32-displacement telescopic cylinder, 33-clamping chuck, 34-clamping slide, 35-adjusting telescopic cylinder, 36-arc clamping plate. DETAILED DESCRIPTION

[0041] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0042] like Figures 1 to 7 As shown, the positioning fixture for axle assembly processing includes a horizontally arranged bottom square frame 1, on which a flip clamping assembly, a clamping transfer assembly, a swing side clamping assembly and a top support positioning assembly are respectively provided.

[0043] The flip clamping assembly includes a U-shaped support frame 2, the lower end of the U-shaped support frame 2 is fixedly connected to the longitudinal inner wall of the bottom square frame 1 close to one side, and two symmetrical lifting vertical plates 3 are longitudinally arranged above the U-shaped support frame 2. Two groups of transversely symmetrical electric telescopic cylinders 4 are respectively arranged between the U-shaped support frame 2 and each lifting vertical plate 3. The lower fixed end of the electric telescopic cylinder 4 is fixedly connected to the upper end surface of the U-shaped support frame 2, and the upper telescopic end of the electric telescopic cylinder 4 is fixedly connected to the lower surface of the lifting vertical plate 3.

[0044] A flip driving motor 5 is fixedly connected to the longitudinal outer end face of each lifting vertical plate 3, and a flip pallet 6 is rotatably provided between the two lifting vertical plates 3. The flip pallet 6 is a square plate extending longitudinally, and the output shaft end of each flip driving motor 5 passes through the lifting vertical plate 3 and is fixedly connected to the longitudinal side end face of the flip pallet 6.

[0045] Two symmetrical supporting side plates 7 are fixedly connected to the upper surface of the flip support plate 6 along the longitudinal direction. A longitudinal clamping telescopic cylinder 8 is fixedly connected to each supporting side plate 7. A clamping circular plate 9 is fixedly connected to the telescopic end of each clamping telescopic cylinder 8.

[0046] The clamping and transferring assembly comprises a limiting slide rail 10 , which is a U-shaped rail with its opening facing downwards. The lower ends of the limiting slide rail 10 are respectively fixedly connected to the lateral outer end surfaces of the bottom square frame 1 .

[0047] A transfer slide 11 is provided on the sliding sleeve of the limiting slide rail 10. The transfer slide 11 is a square seat with a transverse opening. A sliding drive motor 12 is fixedly connected to the inner top surface of the limiting slide rail 10 near the end. A transversely extending drive threaded rod 13 is fixedly connected to the end of the output shaft of the sliding drive motor 12. The end of the drive threaded rod 13 is rotatably supported on the transverse inner wall of the limiting slide rail 10, and the drive threaded rod 13 passes through and is threadedly connected to the transfer slide 11.

[0048] A steering drive motor 14 is fixedly connected to the inner top surface of the transfer slide 11. The end of the output shaft of the steering drive motor 14 passes upward through the transfer slide 11 and is fixedly connected to a clamping limit seat 15. The clamping limit seat 15 is a U-shaped seat with an opening facing upward. A U-shaped clamping seat 16 is telescopically provided on each lateral inner side wall of the clamping limit seat 15.

[0049] The top support positioning assembly includes a horizontally arranged square positioning frame 17 , a longitudinally extending support plate 18 is provided below the square positioning frame 17 , and two ends of the support plate 18 are respectively fixed to the longitudinal inner walls of the bottom square frame 1 .

[0050] The lower end of the square positioning frame 17 is fixedly connected to two symmetrical fixed base plates 19 along the longitudinal direction, and the upper surface of the support plate 18 is fixedly connected to two symmetrical lifting and telescopic cylinders 20 along the longitudinal direction. The upper telescopic end of each lifting and telescopic cylinder 20 is fixedly connected to the lower surface of the fixed base plate 19 respectively.

[0051] Two laterally symmetrical supporting telescopic cylinders 21 are fixed to each fixed bottom plate 19 , and a strip-shaped supporting plate 22 is fixedly connected to the upper telescopic ends of the two longitudinally opposite supporting telescopic cylinders 21 .

[0052] Two symmetrical positioning telescopic cylinders 23 are fixedly connected to each longitudinal inner side wall of the square positioning frame 17 , and positioning clamping plates 24 are fixedly connected to the telescopic ends of the two positioning telescopic cylinders 23 .

[0053] The swing side clamp assembly is arranged between the flip clamp assembly and the top support positioning assembly, and the swing side clamp assembly includes four centrally symmetrical L-shaped holders 25, and the four L-shaped holders 25 are respectively fixedly connected to the two longitudinal outer end surfaces of the bottom square frame 1, and the upper surface of each L-shaped holder 25 is respectively fixedly connected to a swing mounting plate 26, and the outer end surface of each swing mounting plate 26 is respectively fixedly connected to a swing drive motor 27, and a swing side plate 28 is provided between the two laterally opposite swing mounting plates 26, and the output shaft end of the swing drive motor 27 passes through the swing mounting plate 26 and is fixedly connected to the side end surface of the swing side plate 28 near the lower part.

[0054] A rotating drive motor 29 is fixedly connected to the outer wall of each swing side plate 28 near the upper end. The end of the output shaft of the rotating drive motor 29 passes through the swing side plate 28 and is fixedly connected to a circular turntable 30. The circular turntable 30 is arranged close to the inner wall of the swing side plate 28. Four center-symmetrical limit blocks 31 are provided on the outer side of the circular turntable 30. The limit blocks 31 are fixedly connected to the inner wall of the swing side plate 28.

[0055] A longitudinal displacement telescopic cylinder 32 is fixedly connected to the center of the outer end surface of each circular turntable 30, and a clamping chuck 33 is fixedly connected to the telescopic end of the displacement telescopic cylinder 32. Four cross-shaped and symmetrical clamping grooves 34 are provided on the inner end surface of the clamping chuck 33. An adjusting telescopic cylinder 35 is fixedly connected to the inner end surface of each clamping groove 34, and an arc-shaped clamping plate 36 is fixedly connected to the telescopic end of each adjusting telescopic cylinder 35.

[0056] When the present invention is in use: firstly, the flip driving motor 5 is started, and the flip driving motor 5 drives the flipping support plate 6 to flip to a horizontal position, and keeps the supporting side plate 7 on the upper side of the flipping support plate 6, and places the middle bridge shell part of the vehicle bridge flat on the flipping support plate 6, and respectively controls the extension of the two clamping telescopic cylinders 8, and uses the two clamping circular plates 9 to clamp the middle bridge shell from both sides, and then fixes the two leaf spring seats on the middle bridge shell; the flip driving motor 5 is started again, and the flip driving motor 5 drives the flipping support plate 6 to flip 180 degrees, and flips the middle bridge shell in the clamped state to the bottom, and starts the sliding driving motor 12, and the sliding driving motor 12 drives the driving threaded rod 13 to rotate, thereby driving the rotation The transfer slide 11 is moved horizontally along the limit slide 10 to the bottom of the flip support plate 6; the electric control telescopic cylinder 4 is controlled to shorten, and the lifting vertical plate 3 is controlled to descend as a whole, so that the middle bridge shell gradually approaches the clamping limit seat 15 downward, and the clamping telescopic cylinder 8 is controlled to shorten, and the clamping circular plate 9 releases the clamping of the middle bridge shell, so as to transfer the middle bridge shell to the clamping limit seat 15; the two U-shaped clamping seats 16 are controlled to extend respectively, and the middle bridge shell is clamped from both sides, and the sliding drive motor 12 is started again. The sliding drive motor 12 drives the transfer slide 11 to slide along the limit slide 10 to between the two swing side plates 28; the two half-axle sleeves are clamped on the two clamping chucks 33 respectively, and the telescopic cylinder 35 is controlled to extend and retract, so as to utilize The tail end of the half-axle sleeve is clamped with an arc-shaped clamping plate 36, and four swing drive motors 27 are started respectively. The swing drive motor 27 controls the swing side plate 28 to switch from a horizontal loading state to a vertical combination state. When the half-axle sleeve and the intermediate bridge housing are connected by welding, the displacement telescopic cylinder 32 is controlled to extend so that the open end of the half-axle sleeve is docked and clamped on the intermediate bridge housing and welded and fixed. When the half-axle sleeve and the intermediate bridge housing are connected by threaded pressing, the rotation drive motor 29 can be started while controlling the displacement telescopic cylinder 32 to extend, thereby driving the clamped half-axle sleeve to be twisted and fixed on the intermediate bridge housing; the transfer slide 11 continues to move horizontally to the bottom of the square positioning frame 17, and the lifting and lowering cylinder 32 is controlled to extend. The telescopic cylinder 20 is shortened to drive the square positioning frame 17 to descend as a whole, so that the clamping limit seat 15 with the axle clamped thereon enters the square positioning frame 17, and the steering drive motor 14 is started. The steering drive motor 14 drives the clamping limit seat 15 to rotate 90°, so that the axle is converted from longitudinal to transverse. At the same time, the U-shaped clamping seat 16 is controlled to retract, and the clamping of the axle is released. The top support telescopic cylinder 21 is controlled to extend, and the strip top support plate 22 is used to lift the axle upward as a whole. At the same time, the positioning telescopic cylinder 23 is controlled to extend, and the positioning clamp plate 24 is used to clamp and position the axle, and the rear cover of the axle and the main reducer housing are welded and fixed; after welding, the top support telescopic cylinder 21 is controlled to continue to extend to push the axle upward as a whole.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A positioning fixture for axle assembly processing, characterized by: It comprises a horizontally arranged bottom square frame (1), on which a flip clamping assembly, a clamping transfer assembly, a swing side clamping assembly and a top support positioning assembly are respectively provided; The flip clamping assembly comprises a U-shaped support frame (2), the lower end of the U-shaped support frame (2) is fixedly connected to the longitudinal inner wall of the bottom square frame (1) near one side, two symmetrical lifting vertical plates (3) are arranged longitudinally above the U-shaped support frame (2), and two groups of transversely symmetrical electric telescopic cylinders (4) are respectively arranged between the U-shaped support frame (2) and each of the lifting vertical plates (3), the lower fixed end of the electric telescopic cylinder (4) is fixedly connected to the upper end surface of the U-shaped support frame (2), and the upper telescopic end of the electric telescopic cylinder (4) is fixedly connected to the lower surface of the lifting vertical plate (3); A flip drive motor (5) is fixedly connected to the longitudinal outer end surface of each lifting vertical plate (3); a flip support plate (6) is rotatably provided between the two lifting vertical plates (3); the flip support plate (6) is a longitudinally extending square plate; the output shaft end of each flip drive motor (5) passes through the lifting vertical plate (3) and is fixedly connected to the longitudinal side end surface of the flip support plate (6); Two symmetrical supporting side plates (7) are fixedly connected to the upper surface of the flip support plate (6) in the longitudinal direction, each supporting side plate (7) is respectively fixedly connected to a longitudinal clamping telescopic cylinder (8), and the telescopic end of each clamping telescopic cylinder (8) is respectively fixedly connected to a clamping circular plate (9); The clamping and transferring assembly comprises a limiting slide rail (10), the limiting slide rail (10) being a U-shaped rail with an opening facing downward, and the lower ends of the limiting slide rail (10) are respectively fixed to the lateral outer end surfaces of the bottom square frame (1); A transfer slide (11) is slidably sleeved on the limit slide rail (10), and the transfer slide (11) is a square seat with a transverse opening. A sliding drive motor (12) is fixedly connected to the inner top surface of the limit slide rail (10) near the end thereof, and a transversely extending drive threaded rod (13) is fixedly connected to the end of the output shaft of the slide drive motor (12). The end of the drive threaded rod (13) is rotatably supported on the transverse inner side wall of the limit slide rail (10), and the drive threaded rod (13) passes through and is threadedly connected to the transfer slide (11). A steering drive motor (14) is fixedly connected to the inner top surface of the transfer slide (11); the output shaft end of the steering drive motor (14) passes upward through the transfer slide (11) and is fixedly connected to a clamping limit seat (15); the clamping limit seat (15) is a U-shaped seat with an opening facing upward; and a U-shaped clamping seat (16) is telescopically provided on each lateral inner side wall of the clamping limit seat (15); The top support positioning assembly comprises a horizontally arranged square positioning frame (17), a longitudinally extending support plate (18) is provided below the square positioning frame (17), and two ends of the support plate (18) are respectively fixed to the longitudinal inner wall of the bottom square frame (1); The swing side clamp assembly is arranged between the flip clamp assembly and the top support positioning assembly, and the swing side clamp assembly includes four centrosymmetrical L-shaped clamping seats (25). The four L-shaped clamping seats (25) are respectively fixed to two longitudinal outer end surfaces of the bottom square frame (1), and the upper surface of each L-shaped clamping seat (25) is respectively fixed to a swing mounting plate (26). The outer end surface of each swing mounting plate (26) is respectively fixed to a swing driving motor (27). A swing side plate (28) is provided between two laterally opposite swing mounting plates (26), and the output shaft end of the swing driving motor (27) passes through the swing mounting plate (26) and is fixed to the side end surface of the swing side plate (28) close to the lower part.

2. The positioning fixture for axle assembly processing according to claim 1, characterized in that: The lower end of the square positioning frame (17) is fixedly connected to two symmetrical fixed bottom plates (19) along the longitudinal direction, and the upper surface of the support plate (18) is fixedly connected to two symmetrical lifting and telescopic cylinders (20) along the longitudinal direction, and the upper telescopic end of each lifting and telescopic cylinder (20) is respectively fixedly connected to the lower surface of the fixed bottom plate (19).

3. The positioning fixture for axle assembly processing according to claim 2, characterized in that: Two laterally symmetrical supporting telescopic cylinders (21) are fixed to each of the fixed bottom plates (19), and a strip-shaped supporting plate (22) is fixedly connected to the upper telescopic ends of the two longitudinally opposite supporting telescopic cylinders (21).

4. The positioning fixture for axle assembly processing according to claim 3 is characterized in that: Two symmetrical positioning telescopic cylinders (23) are fixedly connected to each longitudinal inner side wall of the square positioning frame (17), and positioning clamping plates (24) are fixedly connected to the telescopic ends of the two positioning telescopic cylinders (23).

5. The positioning fixture for axle assembly processing according to claim 1, characterized in that: A rotation drive motor (29) is fixedly connected to the outer side wall of each swing side plate (28) near the upper end. The output shaft end of the rotation drive motor (29) passes through the swing side plate (28) and is fixedly connected to a circular turntable (30). The circular turntable (30) is arranged closely against the inner side wall of the swing side plate (28). Four centrally symmetrical limit blocks (31) are arranged on the outer side of the circular turntable (30). The limit blocks (31) are fixedly connected to the inner side wall of the swing side plate (28).

6. The positioning fixture for axle assembly processing according to claim 5, characterized in that: A longitudinal displacement telescopic cylinder (32) is fixedly connected at the center of the outer end surface of each circular turntable (30); a clamping chuck (33) is fixedly connected to the telescopic end of the displacement telescopic cylinder (32); four cross-shaped and cross-symmetrical clamping slide grooves (34) are provided on the inner end surface of the clamping chuck (33); an adjustment telescopic cylinder (35) is fixedly connected to the inner end surface of each clamping slide groove (34); and an arc-shaped clamping plate (36) is fixedly connected to the telescopic end of each adjustment telescopic cylinder (35).

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