High-precision assembly tool for rear-drive 8AT shafting assembly
By designing high-precision assembly fixtures, the problems of unstable bracket structure and inaccurate positioning during the assembly of the rear-drive 8AT shaft system assembly were solved, thereby improving assembly efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HARBIN DONGAN AUTOMOTIVE ENGINE MFG CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-26
AI Technical Summary
The traditional rear-wheel drive 8AT axle system assembly suffers from poor bracket structure stability and insufficient positioning accuracy during assembly, making it prone to collisions, resulting in low assembly efficiency and safety hazards.
Design a high-precision assembly fixture that includes lifting rods, crossbars, uprights, sliding sleeves, connecting rods, and insert rods. Enhance the stability and positioning accuracy of the bracket through structures such as limit pins and ball bearings, and avoid collisions.
It improved assembly efficiency by 200%, reduced quality accidents and production costs, eliminated safety hazards, and improved the quality of the assembled equipment.
Smart Images
Figure CN224274055U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive parts manufacturing technology, and in particular relates to a high-precision assembly tooling for a rear-wheel drive 8AT shaft system assembly. Background Technology
[0002] There are many shortcomings in the assembly process of traditional rear-wheel drive 8AT shaft system assemblies: the bracket structure has poor stability and is prone to breakage; the installation and positioning device is not accurate enough, which causes the shaft system assembly to collide with the housing during the assembly process, which can easily cause damage to the shaft system assembly and the housing; the existing operating tools are inconvenient to use, and the lifting tools are prone to interference.
[0003] The aforementioned problems can lead to collisions in the shaft assembly, resulting in low assembly efficiency, increased production costs, and safety hazards. Summary of the Invention
[0004] To address the problems existing in the background technology, this utility model provides a high-precision assembly fixture for a rear-drive 8AT shaft system assembly. This fixture has a simple structure, is easy to operate, facilitates assembly and alignment, and has high work efficiency.
[0005] The technical solution adopted by this utility model to solve its technical problem is: a high-precision assembly fixture for a rear-drive 8AT shaft system assembly, including a lifting rod, a crossbar, a vertical rod, a sliding sleeve, a connecting rod, and an insert rod. The lifting rod and the crossbar are arranged perpendicular to each other. One end of the lifting rod is detachably and fixedly connected to the middle of the crossbar along its length. The vertical rod is hinged to one end of the crossbar, and the connecting rod is hung on the other end of the crossbar. The axes of the vertical rod and the connecting rod are parallel to the axis of the lifting rod. One end of the insert rod is inserted into the other end of the vertical rod, and the other end of the insert rod is fixedly connected to the other end of the connecting rod. The sliding sleeve is coaxially and slidably fitted onto the vertical rod. An avoidance groove is opened on the lower edge of the sliding sleeve, and the avoidance groove is movably fitted onto the insert rod.
[0006] The high-precision assembly fixture for the rear-drive 8AT shaft system assembly also includes a hinge screw and a second limiting pin. A screw hole is opened on the end face of one end of the crossbar, and a through hole is opened on the side wall of one end of the upright. The hinge screw passes through the through hole and is screwed into the screw hole. A hanging groove is opened at the other end of the crossbar, and a boss is provided at one end of the connecting rod. The connecting rod is hung in the hanging groove through the boss. A limiting hole is opened through the two groove walls of the hanging groove, and the second limiting pin is inserted in the limiting hole to limit the connecting rod.
[0007] The end of the upright pole away from the horizontal bar has a locking groove on its side wall. A ball bearing is slidably embedded in one wall of the locking groove. The sliding direction of the ball bearing is parallel to the axis of the upright pole. One end of the insert rod is movably inserted into the locking groove, and the ball bearing limits the position of the insert rod.
[0008] The high-precision assembly fixture for the rear-drive 8AT shaft system assembly also includes a limiting pin. A through hole is radially opened on the side wall of the upright, and a through groove is radially opened on the side wall of the sliding sleeve. The limiting pin is inserted into the hole and slides into the groove.
[0009] The lifting lug is fixedly installed at the end of the lifting rod away from the crossbar.
[0010] The beneficial effects of this utility model are as follows: The tooling enhances the structural strength and assembly stability of the support structure, completely avoiding the risk of breakage; it improves the accuracy of the positioning device, eliminates the quality defects of the shaft assembly hitting the housing, and significantly improves the quality of the assembly; the overall design optimization makes operation more convenient, solves the problem of interference between the lifting tool and the positioning device, avoids the occurrence of collision between the shaft assembly and the housing, and significantly improves the assembly efficiency (by 200%, from the original 10 units / hour to 30 units / hour).
[0011] After the tooling was put into use, the number of quality accidents in production decreased significantly (from 4 per month to 0), saving 50,000 yuan in workpiece damage costs and 280,000 yuan in labor costs per year. The independent research and development reduced reliance on external purchases and eliminated safety hazards when disassembling the shell, ensuring personnel safety. Attached Figure Description
[0012] In the attached diagram:
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This is a schematic diagram showing the relationship between the insertion rod and the upright rod of this utility model;
[0015] Figure 3 This is a schematic diagram of the pole connection relationship of this utility model;
[0016] In the diagram: 1. Lifting rod; 2. Horizontal bar; 3. Vertical bar; 4. Sliding sleeve; 5. Connecting rod; 6. Insert rod; 7. Hinge screw; 8. Limit pin one; 9. Limit pin two; 11. Lifting lug; 21. Hanging groove; 31. Locking groove; 32. Contact ball; 41. Sliding groove; 42. Clearance groove. Detailed Implementation
[0017] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.
[0018] A high-precision assembly fixture for a rear-drive 8AT shaft system assembly includes a lifting rod 1, a crossbar 2, a vertical rod 3, a sliding sleeve 4, a connecting rod 5, and an insert rod 6. The lifting rod 1 and the crossbar 2 are arranged perpendicularly to each other. One end of the lifting rod 1 is detachably fixed to the middle of the crossbar 2 along its length by bolts, forming an inverted T-shaped structure. The vertical rod 3 is hinged to one end of the crossbar 2, and the connecting rod 5 is hung on the other end of the crossbar 2. The axes of the vertical rod 3 and the connecting rod 5 are parallel to the axis of the lifting rod 1. One end of the insert rod 6 is inserted into the other end of the vertical rod 3, and the other end of the insert rod 6 is fixedly connected to the other end of the connecting rod 5. The sliding sleeve 4 is coaxially slidably fitted onto the vertical rod 3. An clearance groove 42 is formed on the lower edge of the sliding sleeve 4, and the clearance groove 42 is movably fitted onto the insert rod 6.
[0019] The high-precision assembly fixture for the rear-drive 8AT shaft system assembly also includes a hinge screw 7 and a second limiting pin 9. A screw hole is opened on the end face of one end of the crossbar 2, coaxial with the rod body. A through hole perpendicular to the rod body axis is opened on the side wall of one end of the upright rod 3. The hinge screw 7 is inserted through the through hole and screwed into the screw hole to realize the hinge connection between the upright rod 3 and the crossbar 2. A hanging groove 21 is opened at the other end of the crossbar 2. The hanging groove 21 penetrates the side wall of the crossbar 2 in the direction parallel to the axis of the lifting rod 1. The hanging groove 21 penetrates to the end face of the other end of the crossbar 2 in the direction of the axis of the crossbar 2. A boss is provided at one end of the connecting rod 5. The connecting rod 5 is hung in the hanging groove 21 through the boss. A limiting hole is opened through the two groove walls of the hanging groove 21. The second limiting pin 9 is inserted in the limiting hole to limit the connecting rod 5 and prevent the connecting rod 5 from slipping.
[0020] The end of the upright 3 away from the horizontal bar 2 has a locking groove 31 on its side wall. A ball bearing 32 is slidably embedded in one wall of the locking groove 31. The sliding direction of the ball bearing 32 is parallel to the axis of the upright 3. One end of the insert rod 6 is movably inserted into the locking groove 31, and the ball bearing 32 limits the position of the insert rod 6.
[0021] The ball bearing 32 is slidably installed in the insertion groove on the wall of the locking groove 31. A return spring is arranged between the ball bearing 32 and the bottom of the insertion groove. The ball bearing 32 is pressed into the insertion groove during the insertion of the rod 6. After the rod 6 is inserted into the locking groove 31, the ball bearing 32 is pushed back and protruded by the return spring to lock the rod 6.
[0022] The high-precision assembly fixture for the rear-drive 8AT shaft system assembly also includes a limiting pin 8. A through hole is radially opened on the side wall of the upright 3, and a through groove 41 is radially opened on the side wall of the sliding sleeve 4. The groove 41 has an elongated oval shape along the axis of the sliding sleeve 4. The limiting pin 8 is inserted into the through hole and slides into the groove 41. The limiting pin 8 limits the sliding sleeve 4 in both the axial and radial directions along the upright 3, preventing the sliding sleeve 4 from sliding too far along the axis of the upright 3, and also preventing the sliding sleeve 4 from rotating circumferentially around the axis of the upright 3, thus affecting the efficiency of use.
[0023] The lifting lug 11 is fixedly installed at the end of the lifting rod 1 away from the crossbar 2 so that it can be lifted when the tooling is used.
[0024] Working principle: When assembling this tooling, the lifting lug 11 is fixedly installed on the lifting rod 1, and the lower end of the lifting rod 1 is detachably fixedly connected to the middle section of the crossbar 2. The upright 3 is sway-hinged to one end of the crossbar 2 through the hinge screw 7. The sliding sleeve 4 is slidably fitted onto the upright 3. The limiting pin 1 8 is inserted and installed on the sliding sleeve 4 and the upright 3 to limit the installation of the sliding sleeve 4. The upper end of the connecting rod 5 is hung in the hanging groove 21 and is installed on the two groove walls of the hanging groove 21 through the limiting pin 2 9. Then the connecting rod 5 is hung on the crossbar 2. The other end of the insert rod 6 is detachably fixed to the lower end of the connecting rod 5 through the screw. One end of the insert rod 6 is movably inserted into the locking groove 31.
[0025] When using this tooling, lift the sliding sleeve 4 to pull one end of the insertion rod 6 out of the locking groove 31, twist and swing the upright 3 to avoid the insertion rod 6, insert one end of the insertion rod 6 into one side of the oil passage hole of the shaft system and out the other side, then lift the sliding sleeve 4 and twist the upright 3 to make the locking groove 31 lock onto the insertion rod 6, then pull the sliding sleeve 4 down to make the clearance groove 42 lock onto the insertion rod 6, limiting the insertion rod 6 to prevent slippage. At this point, the lifting lug 11 can be suspended by the lifting equipment, and the shaft system can be lifted to the machine housing for alignment and assembly using the tooling.
[0026] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. A high-precision assembly fixture for a rear-drive 8AT shaft system assembly, characterized in that: The system includes a lifting rod (1), a horizontal bar (2), a vertical bar (3), a sliding sleeve (4), a connecting rod (5), and an insert rod (6). The lifting rod (1) and the horizontal bar (2) are arranged perpendicular to each other. One end of the lifting rod (1) is detachably and fixedly connected to the middle of the horizontal bar (2) along its length. The vertical bar (3) is hinged to one end of the horizontal bar (2), and the connecting rod (5) is hung on the other end of the horizontal bar (2). The axes of the vertical bar (3) and the connecting rod (5) are parallel to the axis of the lifting rod (1). One end of the insert rod (6) is inserted into the other end of the vertical bar (3), and the other end of the insert rod (6) is fixedly connected to the other end of the connecting rod (5). The sliding sleeve (4) is coaxially and slidably fitted onto the vertical bar (3). A clearance groove (42) is opened on the lower edge of the sliding sleeve (4), and the clearance groove (42) is movably fitted onto the insert rod (6).
2. The high-precision assembly fixture for a rear-drive 8AT shaft system assembly according to claim 1, characterized in that: The high-precision assembly fixture for the rear-drive 8AT shaft system assembly also includes a hinge screw (7) and a second limiting pin (9). A screw hole is opened on the end face of one end of the crossbar (2), and a through hole is opened on the side wall of one end of the upright (3). The hinge screw (7) passes through the through hole and is screwed into the screw hole. A hanging groove (21) is opened at the other end of the crossbar (2). A boss is provided at one end of the connecting rod (5). The connecting rod (5) is hung in the hanging groove (21) through the boss. The hanging groove (21) has a limiting hole through the two groove walls. The second limiting pin (9) passes through the limiting hole and the connecting rod (5) is limited.
3. The high-precision assembly fixture for a rear-drive 8AT shaft system assembly according to claim 2, characterized in that: The end of the upright (3) away from the crossbar (2) has a slot (31) on its side wall. A ball (32) is slidably embedded in one wall of the slot (31). The sliding direction of the ball (32) is parallel to the axis of the upright (3). One end of the insert rod (6) is movably inserted into the slot (31), and the ball (32) limits the position of the insert rod (6).
4. The high-precision assembly fixture for a rear-drive 8AT shaft system assembly according to claim 3, characterized in that: The high-precision assembly fixture for the rear-drive 8AT shaft system assembly also includes a limiting pin (8), a through hole is provided on the side wall of the upright (3) along the radial direction, and a through groove (41) is provided on the side wall of the sliding sleeve (4) along the radial direction. The limiting pin (8) is inserted into the through hole and slides into the groove (41).
5. A high-precision assembly fixture for a rear-drive 8AT shaft system assembly according to claim 4, characterized in that: The lifting lug (11) is fixedly installed at the end of the lifting rod (1) away from the crossbar (2).