Machining clamp for snowmobile chassis aluminum casting

Abstract

The invention discloses a machining clamp for snowmobile chassis aluminum castings, and relates to the technical field of chassis casting clamping, the machining clamp comprises a rotation control device, a machining platform device is arranged in the rotation control device, and the rotation control device comprises a first support and a second support; first bearing wheels are rotationally installed on the front side and the rear side of the upper portion of the first support through rotating shafts correspondingly, a first rotating wheel is installed between the two first bearing wheels, an outer gear ring is fixedly arranged on the outer end face of the first rotating wheel, and a first servo motor is fixedly arranged in the middle of the outer side of the first support. A gear is fixedly arranged at the end of an output shaft of the first servo motor and engaged with the outer gear ring. The first servo motor drives the outer gear ring to control the first rotating wheel, the second rotating wheel and the machining platform device to rotate, and then the snowmobile chassis aluminum casting on the machining platform device rotates.

Description

Technical Field

[0001] The invention relates to the technical field of chassis casting clamping, in particular to a machining fixture for a snowmobile chassis aluminum casting. Background Art

[0002] The snowmobile chassis aluminum casting fixture is a special tool used in the snowmobile manufacturing process, especially in the chassis aluminum casting processing link. Aluminum castings are an important part of the snowmobile chassis. It needs to be light, high-strength, and have good corrosion resistance to cope with the harsh snow and low temperature environment. In order to ensure the processing accuracy and assembly quality of aluminum castings, the snowmobile chassis aluminum casting fixture plays a vital role.

[0003] The invention with authorization announcement number CN114523318B discloses a machining fixture for aluminum castings of chassis brackets for automobiles. The invention drives a bevel driving gear to rotate through a stepper motor, and the rotation of the bevel driving gear drives the rotation of the bevel driven gear. The rotation of the bevel driven gear drives the transmission block to rotate inside the slide slot to complete the distance adjustment between the fixtures to adapt to aluminum castings of different sizes.

[0004] The above device can clamp aluminum castings of different sizes, but the distance adjustment mechanism of the device is limited and cannot clamp aluminum castings of larger sizes. In addition, the spacing adjustment range between the clamping components in the device is small and cannot be flexibly adjusted. Therefore, a more flexible device that can clamp chassis aluminum castings of different specifications is needed. Summary of the invention

[0005] The object of the present invention is to provide a machining fixture for a snowmobile chassis aluminum casting to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A machining fixture for a snowmobile chassis aluminum casting, comprising a rotation control device, a machining platform device is arranged inside the rotation control device, a plurality of clamping units are evenly arranged above the machining platform device, and an auxiliary support device is arranged at the rear side of the machining platform device; The machining platform device includes an outer shell, an electric push rod cluster is annularly arranged at the bottom inner side of the outer shell, a stepped shaft is rotatably arranged at the center of the bottom inner side of the outer shell, a second servo motor is fixedly arranged on one side of the stepped shaft, and the stepped shaft is connected to the output shaft of the second servo motor through a bevel gear transmission mechanism, a hollow transmission shaft is sleeved and installed above the stepped shaft and the stepped shaft is key-connected to the hollow transmission shaft, a lifting cone wheel is fixedly arranged on the hollow transmission shaft, a square groove is symmetrically opened on the upper end surface of the outer shell, a plurality of slide rails are fixedly arranged on the side wall of the square groove, a moving base is arranged in the square groove and a moving base is provided. The movable base is slidably installed on the slide rail through a slider, and a transmission bevel wheel is rotatably installed on the inner side of the movable base through a rotating shaft, and the transmission bevel wheel and the lifting bevel wheel are in surface contact, and a first bevel gear is fixedly arranged on the rotating shaft above the transmission bevel wheel, and a plurality of grooves are opened on the upper end surface of the movable base, and a screw rod is rotatably installed on the bottom of the groove, and a second bevel gear is fixedly arranged on the end of the screw rod close to the first bevel gear, and the second bevel gear is meshed with the first bevel gear, and a movable seat is threadedly installed on the screw rod, and transverse through holes are symmetrically opened on the outer shell, and a spring is arranged in the transverse through hole, and both ends of the spring are respectively fixedly connected to the end surface of the movable base.

[0007] As a further solution of the present invention: the outer surface of the lifting cone wheel is provided with a rubber layer, and the outer surface of the transmission cone wheel is provided with a rubber layer.

[0008] As a further solution of the present invention: a ball is embedded in the end of the output shaft of the electric push rod cluster and the ball is in contact with the lower end surface of the lifting cone wheel.

[0009] As a further solution of the present invention: the rotation control device includes a first bracket and a second bracket, first supporting wheels are rotatably installed on the front and rear sides of the upper part of the first bracket through a rotating shaft, a first rotating wheel is installed between the two first supporting wheels, an outer gear ring is fixedly provided on the outer end surface of the first rotating wheel, a first servo motor is fixedly provided on the middle part of the outer side of the first bracket, a gear is fixedly provided on the end of the output shaft of the first servo motor and the gear is meshed with the outer gear ring, a first fixed block is fixedly provided on the inner bottom of the first rotating wheel, a first balancing box is fixedly provided on the inner top of the first rotating wheel, second supporting wheels are rotatably installed on the front and rear sides of the upper part of the second bracket through a rotating shaft, a second rotating wheel is installed between the two second supporting wheels, a second fixed block is fixedly provided on the inner bottom of the second rotating wheel, and a second balancing box is fixedly provided on the inner top of the second rotating wheel.

[0010] As a further solution of the present invention: the first fixing block is symmetrically arranged with the first balancing box, and the second fixing block is symmetrically arranged with the second balancing box.

[0011] As a further solution of the present invention: two ends of the outer shell are fixedly connected to the first fixing block and the second fixing block respectively.

[0012] As a further solution of the present invention: the clamping unit is fixedly arranged above the moving seat, the clamping unit includes a first electric push rod, a box body is fixedly arranged above the first electric push rod, a third servo motor is fixedly arranged above the box body, and the output shaft of the third servo motor extends into the box body through the top plate of the box body, a first rotating shaft is arranged on one side of the third servo motor, and the lower end of the first rotating shaft extends into the box body through the top plate of the box body, the output shaft of the third servo motor is connected to the first rotating shaft through a first gear transmission mechanism, and the first gear transmission mechanism is located in the box body, and a third servo motor is fixedly arranged on the upper end of the first rotating shaft Three fixed blocks, a fourth servo motor is fixedly arranged on one side of the third fixed block, the fourth servo motor has a locking mechanism, a rotating fixed seat is rotatably installed on the rear side of the third fixed block through a rotating shaft, the output shaft of the fourth servo motor is connected to the rotating shaft through a second gear transmission mechanism, a second rotating shaft is rotatably installed on the rotating fixed seat, a clamping seat is arranged on the second rotating shaft, a second electric push rod is fixedly arranged on one side of the rotating fixed seat, a sliding groove is opened on the inner side of one end of the clamping seat, a connecting seat is slidably arranged in the sliding groove, and the output shaft of the second electric push rod is connected to one end of the clamping seat through the connecting seat.

[0013] As a further solution of the present invention: the auxiliary support device includes a base, a mechanical arm is fixedly arranged above the base, and a supporting fork arm is fixedly arranged at the end of the mechanical arm.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The first servo motor drives the outer gear ring to control the rotation of the first rotating wheel, the second rotating wheel and the machining platform device, so as to rotate the aluminum casting of the snowmobile chassis on the machining platform device, so as to facilitate the subsequent turning operation. The first balance box and the second balance box play the role of balancing the center of gravity of the device to prevent the entire device from tipping over and improve the safety of the device; 2. The second servo motor drives the stepped shaft, the hollow transmission shaft and the lifting cone wheel to rotate, driving the transmission cone wheel, the first bevel gear and the second bevel gear to rotate, thereby driving the moving seat to move on the screw rod. The ball located at the top of the output shaft of the electric push rod cluster plays a role in reducing friction resistance and also has good support. At the same time, the electric push rod cluster can be controlled to rise, so that the lifting cone wheel moves upward, so that the transmission cone wheels on both sides move to both sides, driving the moving base to move outward. The spring is in a stretched state. Under the tension of the spring, the lifting cone wheel and the transmission cone wheel rely on friction to transmit, which expands the clamping operation of aluminum castings of snowmobile chassis of different specifications and improves the practicality of the device. 3. Connect the output shaft of the second electric push rod to one end of the clamping seat through the connecting seat. The height of the rotating fixed seat and the clamping seat can be adjusted through the first electric push rod. The third servo motor can control the circular rotation angle of the rotating fixed seat and the clamping seat. The fourth servo motor can control the swing angle of the rotating fixed seat and the clamping seat. The second electric push rod can make the clamping seat rotate around the second rotating shaft, which is convenient for clamping the aluminum casting of the snowmobile chassis. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the top structure of the present invention.

[0017] Figure 3 It is a schematic diagram of the main structure of the present invention.

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the rotation control device in the present invention.

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the machining platform device in the present invention.

[0020] Figure 6 It is a schematic diagram of the three-dimensional structure of the transverse section of the machining platform device in the present invention.

[0021] Figure 7 It is a schematic diagram of the longitudinal sectional three-dimensional structure of the machining platform device in the present invention.

[0022] Figure 8 It is a schematic diagram of the vertical sectional three-dimensional structure of the machining platform device in the present invention.

[0023] Fig. 9 It is a schematic diagram of the local three-dimensional structure of the machining platform device in the present invention.

[0024] Fig.10 It is a schematic diagram of the three-dimensional structure of the clamping unit in the present invention.

[0025] Fig.11 It is an exploded view of the clamping unit in the present invention.

[0026] Fig.12 It is a schematic diagram of the three-dimensional structure of the auxiliary supporting device in the present invention.

[0027] Notes on reference numerals: 1. Rotation control device; 101. First bracket; 102. First supporting wheel; 103. First rotating wheel; 104. First fixing block; 105. First balancing box; 106. Outer gear ring; 107. First servo motor; 108. Second bracket; 109. Second supporting wheel; 110. Second rotating wheel; 111. Second fixing block; 112. Second balancing box; 2. Machining platform device; 201. Outer shell; 202. Electric push rod cluster; 203. Ball; 204. Step shaft; 205. Bevel gear transmission mechanism; 206. Second servo motor; 207. Hollow transmission shaft; 208. Lifting bevel wheel; 209. Moving base; 210. Transmission bevel wheel; 211, first bevel gear; 212, second bevel gear; 213, screw rod; 214, moving seat; 215, slide rail; 216, transverse through hole; 217, spring; 3, clamping unit; 301, first electric push rod; 302, box; 303, first gear transmission mechanism; 304, third servo motor; 305, first rotating shaft; 306, third fixed block; 307, second gear transmission mechanism; 308, fourth servo motor; 309, rotating fixed seat; 310, second rotating shaft; 311, clamping seat; 312, second electric push rod; 313, connecting seat; 4, auxiliary support device; 41, base; 42, mechanical arm; 43, supporting fork arm. DETAILED DESCRIPTION

[0028] The following embodiments will be described in detail with reference to the accompanying drawings. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shape, thickness or height of each component may be enlarged or reduced. The embodiments listed in the present invention are only used to illustrate the present invention and are not used to limit the scope of the present invention. Any obvious modifications or changes made to the present invention do not depart from the spirit and scope of the present invention.

[0029] Example See also Figures 1 to 12 In an embodiment of the present invention, a machining fixture for a snowmobile chassis aluminum casting includes a rotation control device 1, a machining platform device 2 is arranged inside the rotation control device 1, a plurality of clamping units 3 are evenly arranged above the machining platform device 2, and an auxiliary support device 4 is arranged at the rear side of the machining platform device 2.

[0030] The rotation control device 1 includes a first bracket 101 and a second bracket 108. The first supporting wheels 102 are rotatably mounted on the front and rear sides of the first bracket 101 through a rotating shaft, respectively. A first rotating wheel 103 is mounted between the two first supporting wheels 102. An outer gear ring 106 is fixedly mounted on the outer end surface of the first rotating wheel 103. A first servo motor 107 is fixedly mounted on the middle part of the outer side of the first bracket 101. A gear is fixedly mounted on the end of the output shaft of the first servo motor 107 and the gear is meshed with the outer gear ring 106. A first fixing block 104 is fixedly mounted on the bottom of the inner side of the first rotating wheel 103. A first balancing box 105 is fixedly mounted on the top of the inner side of the first rotating wheel 103. The first fixing block 104 and the first balancing box 105 are symmetrically arranged. 8 The front and rear sides of the upper part are rotatably mounted with second supporting wheels 109 through a rotating shaft, a second rotating wheel 110 is mounted between the two second supporting wheels 109, a second fixing block 111 is fixedly arranged at the inner bottom of the second rotating wheel 110, a second balancing box 112 is fixedly arranged at the inner top of the second rotating wheel 110, the second fixing block 111 and the second balancing box 112 are symmetrically arranged, the outer gear ring 106 is driven by the first servo motor 107 to control the rotation of the first rotating wheel 103, the second rotating wheel 110 and the machining platform device 2, and then the aluminum casting of the snowmobile chassis on the machining platform device 2 is rotated to facilitate the subsequent turning operation, the first balancing box 105 and the second balancing box 112 play the role of balancing the center of gravity of the device, preventing the entire device from tipping over, and improving the safety of the device.

[0031] The machining platform device 2 includes an outer shell 201, and the two ends of the outer shell 201 are fixedly connected to the first fixed block 104 and the second fixed block 111 respectively. An electric push rod cluster 202 is annularly arranged at the bottom of the inner side of the outer shell 201. A stepped shaft 204 is rotatably arranged at the center of the bottom of the inner side of the outer shell 201. A second servo motor 206 is fixedly arranged on one side of the stepped shaft 204. The stepped shaft 204 is connected to the output shaft of the second servo motor 206 through a bevel gear transmission mechanism 205. A hollow transmission shaft 207 is sleeved and installed on the top of the stepped shaft 204, and the stepped shaft 204 is key-connected with the hollow transmission shaft 207. The hollow transmission shaft 207 is driven to rotate by the stepped shaft 204. A lifting cone wheel 208 is fixedly arranged on the transmission shaft 207, and a rubber layer is arranged on the outer surface of the lifting cone wheel 208. A ball 203 is embedded in the end of the output shaft of the electric push rod cluster 202 and the ball 203 is in contact with the lower end surface of the lifting cone wheel 208. A square groove is symmetrically opened on the upper end surface of the outer shell 201, and a plurality of slide rails 215 are fixedly arranged on the side wall of the square groove. A moving base 209 is arranged in the square groove and the moving base 209 is slidably installed on the slide rail 215 through a slider. A transmission cone wheel 210 is rotatably installed on the inner side of the moving base 209 through a rotating shaft, and the transmission cone wheel 210 is in contact with the surface of the lifting cone wheel 208. A rubber layer is arranged on the outer surface of the transmission cone wheel 210. A first bevel gear 211 is fixedly arranged on the rotating shaft above the movable bevel wheel 210, a plurality of grooves are provided on the upper end surface of the movable base 209, a screw rod 213 is rotatably installed at the bottom of the groove, a second bevel gear 212 is fixedly arranged on the end of the screw rod 213 close to the first bevel gear 211, and the second bevel gear 212 is meshed with the first bevel gear 211, a movable seat 214 is threadedly installed on the screw rod 213, transverse through holes 216 are symmetrically provided on the outer shell 201, a spring 217 is provided in the transverse through hole 216, and both ends of the spring 217 are respectively fixedly connected to the end surface of the movable base 209, and the stepped rotating shaft 204, the hollow transmission shaft 207 and the lifting bevel wheel 208 are driven by the second servo motor 206 Rotation drives the transmission cone wheel 210, the first bevel gear 211 and the second bevel gear 212 to rotate, and then drives the moving seat 214 to move on the screw rod 213. The ball 203 located on the top of the output shaft of the electric push rod cluster 202 plays a role in reducing friction resistance and also has good support. At the same time, the electric push rod cluster 202 can be controlled to rise, allowing the lifting cone wheel 208 to move upward, so that the transmission cone wheels 210 on both sides move to both sides, driving the moving base 209 to move outward, and the spring 217 is in a stretched state. Under the pulling force of the spring 217, the lifting cone wheel 208 and the transmission cone wheel 210 are transmitted by friction, which expands the clamping operation of aluminum castings of snowmobile chassis of different specifications and improves the practicability of the device.

[0032] The clamping unit 3 is fixedly arranged above the moving seat 214, and the clamping unit 3 includes a first electric push rod 301, a box body 302 is fixedly arranged above the first electric push rod 301, a third servo motor 304 is fixedly arranged above the box body 302, and the output shaft of the third servo motor 304 passes through the top plate of the box body 302 and extends into the box body 302, a first rotating shaft 305 is arranged on one side of the third servo motor 304, and the lower end of the first rotating shaft 305 passes through the top plate of the box body 302 and extends into the box body 302, the output shaft of the third servo motor 304 is connected to the first rotating shaft 305 through the first gear transmission mechanism 303, and the first gear transmission mechanism 303 is located in the box body 302, a third fixed block 306 is fixedly arranged on the upper end of the first rotating shaft 305, a fourth servo motor 308 is fixedly arranged on one side of the third fixed block 306, and the fourth servo motor 308 has a locking mechanism, and a rotating fixed device is rotatably installed on the rear side of the third fixed block 306 through a rotating shaft The output shaft of the fourth servo motor 308 is connected to the rotating shaft through the second gear transmission mechanism 307. A second rotating shaft 310 is rotatably mounted on the rotating fixed seat 309. A clamping seat 311 is provided on the second rotating shaft 310. A second electric push rod 312 is fixedly provided on one side of the rotating fixed seat 309. A sliding groove is provided on the inner side of one end of the clamping seat 311. A connecting seat 313 is slidably provided in the sliding groove. The second electric push rod 312 is output through the connecting seat 313. The output shaft is connected to one end of the clamping seat 311. The height of the rotating fixed seat 309 and the clamping seat 311 can be adjusted through the first electric push rod 301. The third servo motor 304 can control the circular rotation angle of the rotating fixed seat 309 and the clamping seat 311. The fourth servo motor 308 can control the swing angle of the rotating fixed seat 309 and the clamping seat 311. The second electric push rod 312 can make the clamping seat 311 rotate around the second rotating shaft 310, so as to facilitate the clamping of the aluminum casting of the snowmobile chassis.

[0033] The auxiliary support device 4 includes a base 41 , a mechanical arm 42 is fixedly disposed above the base 41 , and a supporting fork arm 43 is fixedly disposed at the end of the mechanical arm 42 .

[0034] When the device is used, the aluminum casting of the snowmobile chassis is moved to the top of the machining platform device 2 through the auxiliary support device 4, and the electric push rod cluster 202 is started to make the lifting cone wheel 208 rise, and the transmission cone wheel 210 is moved to both sides until the moving base 209 and the clamping unit 3 move to the appropriate position, and the second servo motor 206 is started, and the moving seat 214 is moved on the screw rod 213 through the relevant transmission mechanism, so that the clamping unit 3 moves to the bottom of the aluminum casting of the snowmobile chassis, and the first electric push rod 301 is started to adjust the height of the rotating fixed seat 309 and the clamping seat 311, and then the third servo motor 304 and the fourth servo motor 308 are started to adjust the angle of the rotating fixed seat 309 and the clamping seat 311, and then the second electric push rod 31 2 controls the clamping seat 311 to open and close, thereby clamping the snowmobile chassis aluminum casting, and then controls the auxiliary support device 4 to reset, so that other operating machines can perform processing operations on the snowmobile chassis aluminum casting. After completion, the first servo motor 107 is started to drive the first rotating wheel 103, the second rotating wheel 110 and the machining platform device 2 to rotate. When the machining platform device 2 rotates to the uppermost position, the first servo motor 107 is turned off, and the auxiliary support device 4 is controlled to support the snowmobile chassis aluminum casting. Then, the clamping unit 3 releases the clamping of the snowmobile chassis aluminum casting, and the first servo motor 107 is started to reset the machining platform device 2. The above clamping operation is repeated, thereby achieving the operation of turning over the snowmobile chassis aluminum casting, thereby improving the processing efficiency of the snowmobile chassis aluminum casting.

[0035] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A machining fixture for a snowmobile chassis aluminum casting, comprising a rotation control device (1), characterized in that: A machining platform device (2) is arranged inside the rotation control device (1), a plurality of clamping units (3) are evenly arranged above the machining platform device (2), and an auxiliary support device (4) is arranged at the rear side of the machining platform device (2); The machining platform device (2) comprises an outer shell (201), an electric push rod cluster (202) is arranged in a ring shape at the inner bottom of the outer shell (201), a stepped rotating shaft (204) is rotatably arranged at the center of the inner bottom of the outer shell (201), a second servo motor (206) is fixedly arranged on one side of the stepped rotating shaft (204), and the stepped rotating shaft (204) is connected to the output shaft of the second servo motor (206) via a bevel gear transmission mechanism (205). A hollow transmission shaft (207) is sleeved and installed above the stepped rotating shaft (204), and the stepped rotating shaft (204) is key-connected to the hollow transmission shaft (207), a lifting cone wheel (208) is fixedly arranged on the hollow transmission shaft (207), a square groove is symmetrically opened on the upper end surface of the outer shell (201), a plurality of slide rails (215) are fixedly arranged on the side wall of the square groove, a movable base (209) is arranged in the square groove, and the movable base (209) is connected to the movable base (209) by a screw thread. The slider is slidably mounted on the slide rail (215), a transmission cone wheel (210) is rotatably mounted on the inner side of the mobile base (209) via a rotating shaft, and the transmission cone wheel (210) and the lifting cone wheel (208) are in surface contact, a first bevel gear (211) is fixedly mounted on the rotating shaft above the transmission cone wheel (210), a plurality of grooves are formed on the upper end surface of the mobile base (209), a screw rod (213) is rotatably mounted on the bottom of the groove, and the screw rod (213) is ) is fixedly provided at one end thereof near the first bevel gear (211), and the second bevel gear (212) is meshed with the first bevel gear (211); a movable seat (214) is threadedly mounted on the screw rod (213); transverse through holes (216) are symmetrically provided on the outer shell (201); a spring (217) is provided in the transverse through hole (216), and both ends of the spring (217) are respectively fixedly connected to the end surface of the movable base (209).

2. The machining fixture for the snowmobile chassis aluminum casting according to claim 1, characterized in that: The outer surface of the lifting cone wheel (208) is provided with a rubber layer, and the outer surface of the transmission cone wheel (210) is provided with a rubber layer.

3. The machining fixture for the aluminum casting of the snowmobile chassis according to claim 2, characterized in that: A ball (203) is embedded and rollingly mounted on the end of the output shaft of the electric push rod cluster (202), and the ball (203) is in contact with the lower end surface of the lifting cone wheel (208).

4. The machining fixture for the aluminum casting of the snowmobile chassis according to claim 3, characterized in that: The rotation control device (1) comprises a first bracket (101) and a second bracket (108); first supporting wheels (102) are rotatably mounted on the front and rear sides of the first bracket (101) respectively via a rotating shaft; a first rotating wheel (103) is mounted between the two first supporting wheels (102); an outer gear ring (106) is fixedly mounted on the outer end surface of the first rotating wheel (103); a first servo motor (107) is fixedly mounted on the middle portion of the outer side of the first bracket (101); a gear is fixedly mounted on the end of the output shaft of the first servo motor (107); and the gear and the outer gear ring (106) are connected to each other. 6) meshing, a first fixing block (104) is fixedly provided at the bottom of the inner side of the first rotating wheel (103), a first balancing box (105) is fixedly provided at the top of the inner side of the first rotating wheel (103), second supporting wheels (109) are rotatably mounted on the front and rear sides of the upper side of the second bracket (108) respectively via a rotating shaft, a second rotating wheel (110) is mounted between the two second supporting wheels (109), a second fixing block (111) is fixedly provided at the bottom of the inner side of the second rotating wheel (110), and a second balancing box (112) is fixedly provided at the top of the inner side of the second rotating wheel (110).

5. The machining fixture for the snowmobile chassis aluminum casting according to claim 4, characterized in that: The first fixing block (104) and the first balancing box (105) are symmetrically arranged, and the second fixing block (111) and the second balancing box (112) are symmetrically arranged.

6. The machining fixture for the aluminum casting of the snowmobile chassis according to claim 5, characterized in that: Two ends of the outer shell (201) are fixedly connected to the first fixing block (104) and the second fixing block (111) respectively.

7. The machining fixture for the aluminum casting of the snowmobile chassis according to any one of claims 1 to 6, characterized in that: The clamping unit (3) is fixedly arranged above the moving seat (214), and the clamping unit (3) comprises a first electric push rod (301), a box body (302) is fixedly arranged above the first electric push rod (301), a third servo motor (304) is fixedly arranged above the box body (302), and the output shaft of the third servo motor (304) passes through the top plate of the box body (302) and extends into the box body (302), a first rotating shaft (305) is arranged on one side of the third servo motor (304), and the lower end of the first rotating shaft (305) passes through the top plate of the box body (302) and extends into the box body (302), the output shaft of the third servo motor (304) is connected to the first rotating shaft (305) through a first gear transmission mechanism (303), and the first gear transmission mechanism (303) is located in the box body (302), and the upper end of the first rotating shaft (305) is fixedly arranged with a third A fixed block (306), a fourth servo motor (308) is fixedly arranged on one side of the third fixed block (306), the fourth servo motor (308) having a locking mechanism, a rotating fixed seat (309) is rotatably mounted on the rear side of the third fixed block (306) via a rotating shaft, the output shaft of the fourth servo motor (308) is connected to the rotating shaft via a second gear transmission mechanism (307), a second rotating shaft (310) is rotatably mounted on the rotating fixed seat (309), a clamping seat (311) is arranged on the second rotating shaft (310), a second electric push rod (312) is fixedly arranged on one side of the rotating fixed seat (309), a sliding groove is provided on the inner side of one end of the clamping seat (311), a connecting seat (313) is slidably arranged in the sliding groove, and the output shaft of the second electric push rod (312) is connected to one end of the clamping seat (311) via the connecting seat (313).

8. The machining fixture for the aluminum casting of the snowmobile chassis according to claim 7, characterized in that: The auxiliary support device (4) comprises a base (41), a mechanical arm (42) is fixedly arranged above the base (41), and a supporting fork arm (43) is fixedly arranged at the end of the mechanical arm (42).

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