Milling and boring tool for drive axle shell

Abstract

The utility model relates to the technical field of gearbox machining, in particular to a milling and boring tool for a drive axle shell, which comprises a base, a first clamp, a second clamp and a third clamp, the first clamp is arranged at the top of the base and is used for fixing a protruding part at the lower end of the drive axle shell along the vertical direction; the second clamp is arranged on the top of the base and used for clamping and fixing the side portion of the drive axle shell in the transverse direction. The third clamp is detachably arranged on the top of the second clamp and used for fixing the top of the drive axle shell in the vertical direction. Through the arrangement of the first clamp, the second clamp and the third clamp, the drive axle shell can be conveniently and stably clamped to machining equipment, shaft hole machining and assembly hole machining of the shell can be conveniently conducted on the same machining equipment, the machining efficiency is effectively improved, and the machining cost is reduced. The problem that when a shaft hole and an assembly hole of a drive axle shell are machined through one machining device, a conventional tool cannot clamp the shell conveniently is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of drive axle processing, in particular to a milling and boring tooling for a drive axle housing. Background Art

[0002] The drive axle housing is an important part of the vehicle transmission system, which mainly bears and protects components such as the differential and the reducer. According to different manufacturing materials, the drive axle housing can be divided into several types, such as cast iron housing, steel plate welded housing, and aluminum alloy housing. When processing a cast iron housing, from blank to forming, it needs to go through processes such as casting, turning, milling, and boring. During the machining process, special tooling is required to fix the drive axle housing on the corresponding processing equipment for machining, such as a drive axle fixing tooling disclosed in CN219189976U.

[0003] Generally, a conventional drive axle housing has shaft holes and assembly holes. The shaft holes are used for the penetration of the shaft system, and the assembly holes are used for the connection between the housing and the bridge. As shown in Figure 4 this long cylindrical drive axle housing, the shaft holes and assembly holes of the drive axle housing are not on the same processing surface. When it is necessary to machine the shaft holes and assembly holes on a single processing equipment, the conventional tooling is not convenient for clamping and fixing it. To solve this problem, it is necessary to provide a milling and boring tooling for a drive axle housing. Summary of the Utility Model

[0004] In view of this, the utility model provides a milling and boring tooling for a drive axle housing. By setting the first fixture, the second fixture, and the third fixture, it is not only convenient to firmly clamp the drive axle housing onto the processing equipment, but also convenient to machine the shaft holes and assembly holes of the housing on a single processing equipment, effectively improving the processing efficiency and solving the problem that the conventional tooling is not convenient for clamping the housing when machining the shaft holes and assembly holes of the drive axle housing on a single processing equipment.

[0005] The technical solution of the utility model is realized as follows:

[0006] The utility model provides a milling and boring tooling for a drive axle housing, including a base, wherein,

[0007] the base is used to be fixed on the processing table of the processing equipment, the base is used to place the drive axle housing, and a stepped structure protrudes outward from the side of the lower end of the drive axle housing;

[0008] it further includes a first fixture, a second fixture, and a third fixture, wherein,

[0009] the first fixture is arranged on the top of the base and is used to fix the protruding part at the lower end of the drive axle housing vertically;

[0010] The second fixture is arranged on the top of the base and is used for clamping and fixing the side part of the drive axle housing along the transverse direction;

[0011] The third fixture is detachably arranged on the top of the second fixture and is used for fixing the top of the drive axle housing along the vertical direction.

[0012] On the basis of the above technical solutions, preferably, a sunk groove is arranged on the top of the base, wherein,

[0013] A counterbore is vertically penetrated and arranged on the bottom of the sunk groove;

[0014] The lower end of the drive axle housing is placed in the sunk groove.

[0015] On the basis of the above technical solutions, preferably, a U-shaped chip removal groove is penetrated and arranged in the middle position of the side part of the sunk groove along the front-back direction, wherein the bottom of the chip removal groove is horizontally aligned with the sunk groove.

[0016] On the basis of the above technical solutions, preferably, a flange is arranged on each side of the chip removal groove, wherein,

[0017] The two flanges are symmetrically arranged, and arc-shaped avoidance grooves are arranged on the relative ends of the two flanges. The avoidance grooves are concentric with the sunk groove and have the same radius;

[0018] The flange is fixed on the top of the base;

[0019] One of the second fixtures is detachably arranged on the side part of each flange, and at least one of the first fixtures is detachably arranged on the top of each flange.

[0020] On the basis of the above technical solutions, preferably, the first fixture includes a screw rod, a nut, a pressing plate and a cushion block, wherein,

[0021] One end of the screw rod is screwed on the flange, and the other end extends upward and is screwed with the nut;

[0022] A through hole is vertically penetrated and arranged on the pressing plate. The screw rod penetrates through the through hole, and the nut fastens the pressing plate downward so that one end of the pressing plate presses on the protruding part of the lower end of the drive axle housing, and the other end of the pressing plate is placed on the cushion block;

[0023] The cushion block is placed on the top of the flange.

[0024] On the basis of the above technical solutions, preferably, the bottom of one end of the pressing plate close to the drive axle housing is wedge-shaped.

[0025] Based on the above technical solutions, preferably, a number of fixture mounting holes are equidistantly arranged in the front-rear direction on the opposite ends of the two flanges, and the second fixture is selectively fixed to two of the fixture mounting holes by bolts.

[0026] Based on the above technical solutions, preferably, the second fixture includes a support frame, a bolt mounting seat, an adjustable threaded rod, and a fixing bolt, where,

[0027] The bottom of the support frame is connected to the side of the flange by bolts, and a threaded hole is vertically and throughly arranged inside the support frame, and a number of the threaded holes are equidistantly arranged in the front-rear direction;

[0028] The bolt mounting seat is arranged inside the support frame, and the bolt mounting seat is selectively fixed to two of the threaded holes by bolts;

[0029] The adjustable threaded rod passes through the bolt mounting seat transversely and is screwed, and one end of the adjustable threaded rod abuts against the side of the drive axle housing;

[0030] A number of bolt mounting holes are transversely and throughly arranged on the support frame, the fixing bolt is screwed into one of the bolt mounting holes, and one end of the fixing bolt abuts against the side of the drive axle housing.

[0031] Based on the above technical solutions, preferably, the third fixture includes a top plate and a tightening bolt, where,

[0032] One positioning groove is arranged on each of the two sides of the bottom of the top plate, the two positioning grooves correspond to the two second fixtures one by one up and down, and the upper end of the second fixture is inserted into the corresponding positioning groove up and down and is connected by a bolt fixing method;

[0033] The tightening bolt passes through the top plate up and down and is screwed, and the lower end of the tightening bolt abuts against the top of the drive axle housing.

[0034] Based on the above technical solutions, preferably, the third fixture further includes a lifting ring, where,

[0035] The lifting ring is fixed on the top plate.

[0036] The milling and boring tooling for a drive axle housing of the present utility model has the following beneficial effects compared with the prior art:

[0037] (1) By setting the first fixture to fix the protruding part at the lower end of the drive axle housing vertically, the second fixture to clamp and fix the side part of the drive axle housing horizontally, and the third fixture to fix the top of the drive axle housing vertically, it is convenient to firmly clamp the drive axle housing onto the processing equipment, facilitating the processing equipment to perform drilling and boring operations on the assembly holes of the drive axle housing horizontally. After the drilling and boring operations, the third fixture is disassembled, which is convenient for the subsequent processing equipment to perform milling and boring operations on the shaft holes of the drive axle housing vertically, enabling the housing to be processed for shaft holes and assembly holes on one processing equipment, effectively improving the processing efficiency.

[0038] (2) By setting a number of bolt mounting holes on the support frame and screwing the fixing bolts into one of the bolt mounting holes, it is convenient to change the use position of the fixing bolts according to the fixing requirements of the drive axle housing 5, with good flexibility.

[0039] (3) By setting a number of fixture mounting holes at equal distances in the front-back direction along the opposite ends of the two flanges, and selectively fixing the second fixture to two of the fixture mounting holes with bolts, it is convenient to change the use position of the second fixture according to the fixing requirements of the drive axle housing 5, with good flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0041] Figure 1 Partial perspective view of a milling and boring tooling for a drive axle housing of the present invention;

[0042] Figure 2 Enlarged view of point A of the present invention;

[0043] Figure 3 Perspective view of the third fixture of the present invention;

[0044] Figure 4 First use state schematic diagram of a milling and boring tooling for a drive axle housing of the present invention;

[0045] Figure 5 Second use state schematic diagram of a milling and boring tooling for a drive axle housing of the present invention;

[0046] Figure 6 Partial sectional view of the pressing plate of the present invention;

[0047] In the figure: 1. Base; 2. First fixture; 3. Second fixture; 4. Third fixture; 5. Driving axle housing; 21. Screw; 22. Nut; 23. Pressure plate; 24. Spacer block; 31. Support frame; 32. Bolt mounting seat; 33. Adjustable threaded rod; 34. Fixed bolt; 41. Top plate; 42. Tightening bolt; 43. Lifting ring; 101. Sunk groove; 102. Countersunk hole; 103. Chip removal groove; 104. Flange; 105. Avoidance groove; 106. Fixture mounting hole; 401. Positioning groove; 2301. Perforation; 3101. Threaded hole; 3102. Bolt mounting hole. Detailed implementation manners

[0048] Next, in combination with the specific implementation manners of the present utility model, the technical solutions in the present utility model will be clearly and completely described. Obviously, the described implementation manners are only a part of the implementation manners of the present utility model, rather than all of the implementation manners. Based on the implementation manners in the present utility model, all other implementation manners obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0049] As Figure 1-6 shown, a milling and boring tooling for a driving axle housing of the present utility model includes a base 1, a first fixture 2, a second fixture 3, and a third fixture 4.

[0050] Among them, the base 1 is used to be fixed on the processing table of the processing equipment, and the driving axle housing 5 is placed on the base 1. Specifically, as Figure 1 shown, a sunk groove 101 is provided at the top of the base 1, and a countersunk hole 102 is vertically penetrated through the bottom of the sunk groove 101. Bolts are installed in the countersunk hole 102, and the base 1 is fixed on the processing table of the processing equipment through the installed bolts; as Figure 4 shown, the lower end of the driving axle housing 5 is placed in the sunk groove 101. The driving axle housing 5 is of a long cylindrical structure, and its inner hole is used to install the shafting. The side part of its lower end protrudes outward to form a stepped structure, and the top of the protrusion is spherical, and the bottom is still cylindrical. The outer diameter of the cylindrical part is equal to or slightly smaller than the inner diameter of the sunk groove 101, which is used for positioning and placing the driving axle housing 5 when it is clamped; a reinforcing rib is provided on the side part of the driving axle housing 5 above the protrusion, and a plurality of assembly holes are horizontally arranged on the reinforcing rib, and the assembly holes are used to connect with the vehicle's bridge frame.

[0051] In addition, as Figure 4 shown, a flange is provided at one end of the driving axle housing 5 placed in the sunk groove 101, and a plurality of bolt installation through holes are vertically penetrated through the flange. In view of this, at least two positioning pins can be provided on the bottom of the sunk groove 101, and the positioning pins are used to insert into the bolt installation through holes, and further used for the second installation positioning when the driving axle housing 5 is clamped. The positioning pin is not shown in the legend.

[0052] The first fixture 2 is arranged on the top of the base 1 and is used to vertically fix the protruding part at the lower end of the drive axle housing 5; the second fixture 3 is arranged on the top of the base 1 and is used to transversely clamp and fix the side part of the drive axle housing 5; the third fixture 4 is detachably arranged on the top of the second fixture 3 and is used to vertically fix the top of the drive axle housing 5. With this clamping structure, it is convenient to firmly clamp the drive axle housing 5 onto the processing equipment, facilitating the processing equipment to drill and bore the assembly holes of the drive axle housing 5 transversely. After the drilling and boring process, the third fixture 4 is removed, facilitating the subsequent processing equipment to mill and bore the shaft holes of the drive axle housing 5 vertically, enabling the housing to be processed for shaft holes and assembly holes on one processing equipment, effectively improving the processing efficiency.

[0053] During processing, iron chips will fall into the sinking groove 101. To facilitate the discharge of the iron chips falling into the sinking groove 101, a U-shaped chip discharge groove 103 is provided through the middle position of the side of the sinking groove 101 in the front-back direction. Among them, the bottom of the chip discharge groove 103 is horizontally aligned with the sinking groove 101. When cleaning the iron chips, the iron chips in the sinking groove 101 are discharged from the chip discharge groove 103.

[0054] As Figure 1 shown, in the structural design of the base 1, a flange 104 is provided on each side of the chip discharge groove 103. Among them, the two flanges 104 are symmetrically arranged and fixed to the top of the base 1 by bolts. At the same time, an arc-shaped avoidance groove 105 is provided at the relative ends of the two flanges 104. The avoidance groove 105 is concentric with the sinking groove 101 and has the same radius. When installing the drive axle housing 5, the lower end of the drive axle housing 5 passes through the avoidance groove 105 and then enters the sinking groove 101.

[0055] As Figure 1 shown, a second fixture 3 is detachably arranged on the side of each flange 104. The two second fixtures 3 are located on both sides of the drive axle housing 5. As Figure 4 shown, when transverse drilling and boring are required, one end of the third fixture 4 is connected to one of the second fixtures 3, and the other end is connected to the other second fixture 3.

[0056] As Figure 1 shown, at least one first fixture 2 is detachably arranged on the top of each flange 104. Figure 1 As shown in , there are two first fixtures 2, or there can be more than two. The more first fixtures 2 there are, the better the fixing effect on the drive axle housing 5.

[0057] In the structural design of the first fixture 2, the first fixture 2 includes a screw 21, a nut 22, a pressing plate 23 and a cushion block 24. One end of the screw 21 is screwed onto the flange 104, and the other end extends upward and is screwed with the nut 22. A through hole 2301 is vertically formed through the pressing plate 23. The screw 21 passes through the through hole 2301, and the nut 22 fastens the pressing plate 23 downward so that one end of the pressing plate 23 presses on the protruding part at the lower end of the drive axle housing 5, and the other end of the pressing plate 23 is placed on the cushion block 24.

[0058] In the above structure, the cushion block 24 is placed on the top of the flange 104. At least one cushion block 24 is prefabricated, and the surface of each cushion block 24 is coated with an anti-slip coating. When a higher support height is required, two or more cushion blocks 24 are stacked, and the adjacent two cushion blocks 24 achieve anti-slip through the anti-slip coating.

[0059] When it is necessary to clamp the drive axle housing 5, loosen the nut 22, adjust the height of the pressing plate 23, select a suitable cushion block 24 according to the actual height of the protruding part at the lower end of the drive axle housing 5, then place the wedge-shaped end of the pressing plate 23 on the protruding surface to ensure that the contact surface is flat, then support the cushion block 24 at the bottom of the other end of the pressing plate 23, and finally tighten the nut 22 to an appropriate tightness to ensure that the drive axle housing 5 is stable and immovable.

[0060] To facilitate the installation of the first fixture 2, a number of screw holes for installing the screw 21 are provided on the flange 104, and the number of screw holes is circumferentially and annularly arranged around the sunken groove 101.

[0061] In addition, since the lower end of the drive axle housing 5 is a spherical shell-shaped protrusion, the bottom of one end of the pressing plate 23 close to the drive axle housing 5 is wedge-shaped, and the wedge-shaped surface is used to contact the spherical shell surface, thereby improving the clamping and fixing effect.

[0062] As Figure 1 shown, in the structural design of the base 1, several bases 1 are prefabricated according to the different outer diameters of the drive axle housing 5. The sunken grooves 101 on the several bases 1 are adapted to the lower ends of the corresponding drive axle housings 5. To cooperate with the processing of drive axle housings 5 with different outer diameters, the second fixture 3 and the base 1 are designed to be detachable to facilitate the installation of the base 1 suitable for the drive axle housing 5 at the bottom of the second fixture 3; specifically, as Figure 1 shown, a number of fixture mounting holes 106 are equidistantly arranged in the front-back direction along the opposite ends of the two flanges 104. The second fixture 3 is selectively fixed on two of the fixture mounting holes 106 through bolts. Through this structure, the disassembly of the second fixture 3 can be realized, which is convenient for adapting to the base 1 with a suitable inner diameter. At the same time, by selecting the fixture mounting holes 106 at different positions to install the second fixture 3, it is convenient to change the use position of the second fixture 3 according to the fixing requirements of the drive axle housing 5, and the flexibility is better.

[0063] In this milling and boring tooling fixture, the second fixture 3 includes a support frame 31, a bolt mounting seat 32, an adjustable threaded rod 33, and a fixing bolt 34.

[0064] Among them, as Figure 1 shown, the support frame 31 is in the shape of a Chinese character 'Ri' frame structure, and its bottom is bolt - connected to the side of the flange 104. As Figure 2 shown, a threaded hole 3101 is vertically and through - provided inside the support frame 31, and a number of threaded holes 3101 are equidistantly arranged in the front - to - back direction.

[0065] As Figure 2 shown, the bolt mounting seat 32 is arranged inside the support frame 31, and the bolt mounting seat 32 is selectively fixed to two of the threaded holes 3101 by bolts. The adjustable threaded rod 33 passes through the bolt mounting seat 32 transversely and is screwed, and one end of the adjustable threaded rod 33 abuts against the side of the drive axle housing 5. Specifically, the threaded holes 3101 are arranged on the cross - beam at the middle part of the 'Ri' - shaped frame structure. Through the threaded holes 3101, the mounting position of the bolt mounting seat 32 can be changed, and thus the abutting position of the adjustable threaded rod 33 can be changed, with good flexibility.

[0066] As Figure 1 shown, a number of bolt mounting holes 3102 are transversely and through - provided on the support frame 31. The fixing bolt 34 is screwed into one of the bolt mounting holes 3102, and one end of the fixing bolt 34 abuts against the side of the drive axle housing 5. A number of fixing bolts 34 are prepared, and the other bolt mounting holes 3102 can be screwed with the prepared fixing bolts 34.

[0067] In the above structure, a rectangular block is welded at each position on the support frame 31 where the bolt mounting holes 3102 are provided, and the bolt mounting holes 3102 are opened on the corresponding rectangular blocks.

[0068] In this milling and boring tooling fixture, the third fixture 4 includes a top plate 41 and a tightening bolt 42. Among them, as Figure 3 shown, a positioning groove 401 is provided on each side of the bottom of the top plate 41. The two positioning grooves 401 correspond to the two second fixtures 3 one - to - one up and down. The upper end of the second fixture 3 is inserted into the corresponding positioning groove 401 up and down and is connected by a bolt - fixing method. The tightening bolt 42 passes through the top plate 41 vertically and is screwed, and the lower end of the tightening bolt 42 abuts against the top of the drive axle housing 5.

[0069] As Figure 3As shown in the figure, the positioning groove 401 is formed by a square tube, which is welded to the bottom of the top plate 41. The inner hole thereof is the positioning groove 401. Threaded holes are provided in the upper end of the support frame 31 in the front-back direction, and through holes are provided in the square tube in the front-back direction. When installing the third fixture 4, the square tube is sleeved on the upper end of the support frame 31 at the corresponding position, then a bolt is inserted through the through hole, and the bolt is screwed with the threaded hole, so as to realize the fixed installation of the second fixture 3.

[0070] To facilitate the movement of the third fixture 4, a lifting ring 43 is fixed to each side of the top of the top plate 41, and the third fixture 4 can be conveniently lifted and transported through the lifting ring 43.

[0071] In the above mechanism, handles are provided at one ends of the adjustable threaded rod 33, the fixing bolt 34, and the tightening bolt 42 away from the drive axle housing 5.

[0072] The using method of a milling and boring tooling for a drive axle housing of the present utility model is as follows:

[0073] Fix the base 1 on the processing table of the processing equipment, place the lower end of the drive axle housing 5 into the sinking groove 101, fix the bottom of the drive axle housing 5 through the first fixture 2, then fix the side part of the drive axle housing 5 through the second fixture 3, and then fix the top of the drive axle housing 5 through the third fixture 4. After fixation, use the processing equipment to drill and bore the assembly holes of the drive axle housing 5. During the process, it is not necessary to disassemble the drive axle housing 5, so the positional accuracy between the shaft hole and the assembly hole is good. After drilling and boring, remove the third fixture 4, then mill and bore the shaft hole of the drive axle housing 5. After milling and boring, disassemble the drive axle housing 5.

[0074] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A milling and boring tooling for a drive axle housing, comprising a base (1), wherein, the base (1) is used to be fixed on the processing table of a processing device, and the drive axle housing (5) is placed on the base (1), and a stepped structure protrudes outward from the side of the lower end of the drive axle housing (5); It is characterized in that: it further includes a first fixture (2), a second fixture (3) and a third fixture (4), wherein, the first fixture (2) is arranged on the top of the base (1) and is used to fix the protruding part at the lower end of the drive axle housing (5) vertically; the second fixture (3) is arranged on the top of the base (1) and is used to clamp and fix the side of the drive axle housing (5) horizontally; the third fixture (4) is detachably arranged on the top of the second fixture (3) and is used to fix the top of the drive axle housing (5) vertically.

2. The milling and boring tooling for a drive axle housing according to claim 1, wherein: A sunken groove (101) is arranged on the top of the base (1), wherein, a countersunk hole (102) is vertically penetrated through the bottom of the sunken groove (101); the lower end of the drive axle housing (5) is placed in the sunken groove (101).

3. The milling and boring tooling for a drive axle housing according to claim 2, characterized in that: A U-shaped chip removal groove (103) is penetrated through the middle position of the side of the sunken groove (101) in the front-back direction, wherein the bottom of the chip removal groove (103) is horizontally aligned with the sunken groove (101).

4. The milling and boring tooling for a drive axle housing according to claim 3, characterized in that: A flange (104) is arranged on each side of the chip removal groove (103), wherein, the two flanges (104) are symmetrically arranged, and an arc-shaped avoidance groove (105) is arranged at the relative ends of the two flanges (104), and the avoidance groove (105) is concentric with the sunken groove (101) and has the same radius; the flange (104) is fixed on the top of the base (1); a second fixture (3) is detachably arranged on the side of each flange (104), and at least one first fixture (2) is detachably arranged on the top of each flange (104).

5. The milling and boring tooling for a drive axle housing according to claim 4, characterized in that: The first fixture (2) includes a screw (21), a nut (22), a pressing plate (23) and a cushion block (24), wherein, one end of the screw (21) is screwed on the flange (104), and the other end extends upward and is screwed with the nut (22); a through hole (2301) is vertically penetrated through the pressing plate (23), the screw (21) penetrates through the through hole (2301), and the nut (22) tightly fastens the pressing plate (23) downward, so that one end of the pressing plate (23) presses on the protruding part at the lower end of the drive axle housing (5), and the other end of the pressing plate (23) is placed on the cushion block (24); the cushion block (24) is placed on the top of the flange (104).

6. The milling and boring tooling for a drive axle housing according to claim 5, characterized in that: The bottom of the end of the pressing plate (23) close to the drive axle housing (5) is wedge-shaped.

7. The milling and boring tooling for a drive axle housing according to claim 4, characterized in that: A plurality of fixture mounting holes (106) are equidistantly arranged in the front-back direction on the opposite ends of the two flanges (104), and the second fixture (3) is selectively fixed on two of the fixture mounting holes (106) by bolts.

8. The milling and boring tooling for a drive axle housing according to claim 7, characterized in that: The second fixture (3) includes a support frame (31), a bolt mounting seat (32), an adjustable threaded rod (33), and a fixing bolt (34). Among them, the bottom of the support frame (31) is bolted to the side of the flange (104). A threaded hole (3101) is vertically and throughly provided inside the support frame (31), and a plurality of the threaded holes (3101) are equidistantly arranged in the front-back direction; the bolt mounting seat (32) is arranged inside the support frame (31), and the bolt mounting seat (32) is selectively fixed to two of the threaded holes (3101) by bolts; the adjustable threaded rod (33) passes through the bolt mounting seat (32) transversely and is screwed, and one end of the adjustable threaded rod (33) abuts against the side of the drive axle housing (5); a plurality of bolt mounting holes (3102) are transversely and throughly provided on the support frame (31), the fixing bolt (34) is screwed into one of the bolt mounting holes (3102), and one end of the fixing bolt (34) abuts against the side of the drive axle housing (5).

9. The milling and boring tooling for a drive axle housing according to claim 1, characterized in that: The third fixture (4) includes a top plate (41) and a tightening bolt (42). Among them, one positioning groove (401) is provided on each of the two sides of the bottom of the top plate (41), the two positioning grooves (401) correspond to the two second fixtures (3) up and down one by one, and the upper end of the second fixture (3) is inserted into and connected to the corresponding positioning groove (401) in an up-and-down manner by a bolt fixing method; the tightening bolt (42) passes through the top plate (41) up and down and is screwed, and the lower end of the tightening bolt (42) abuts against the top of the drive axle housing (5).

10. A milling and boring tooling for a drive axle housing according to claim 9, characterized in that: The third fixture (4) further includes a lifting ring (43). Among them, the lifting ring (43) is fixed on the top plate (41).

Images