Speed reducer assembly gear shaft pressing rivet positioning clamp

Abstract

The utility model relates to a press-riveting positioning clamp for a gear shaft of a speed reducer assembly, and belongs to the technical field of press-riveting equipment for the gear shaft of the speed reducer assembly. The press riveting positioning clamp for the gear shaft of the speed reducer assembly comprises a base, a force bearing block, a shell positioning plate, a guide supporting block, a guide rod and a compression spring. The center of the base is provided with a guide supporting block; a force bearing block is fixedly mounted at the top end of the guide supporting block through a locking screw; a shell positioning plate is arranged on the guide supporting block in a sliding manner; guide rods are symmetrically arranged on the base on the two sides of the guide supporting block; a bushing is arranged on the shell positioning plate above the guide rod through a through hole; the guide rod extends into the lining and is connected with the lining in a sliding mode. The speed reducer assembly gear shaft press-riveting positioning clamp is compact in structure and ingenious in design, solves the problem that an existing speed reducer assembly gear shaft press-riveting mode is low in press-riveting success rate, and is particularly suitable for press-riveting of the speed reducer assembly gear shaft.

Description

Technical Field

[0001] This utility model relates to a gear shaft riveting and positioning fixture for a speed reducer assembly, belonging to the technical field of gear shaft riveting equipment for speed reducers. Background Technology

[0002] The reducer is a core component in the automotive DP-EPS steering system, especially the gear shaft riveting, which is a critical process. The reducer assembly is clamped by axial positioning through the end face of the gear shaft. The existing riveting process involves gear shaft 17 (see the instruction manual appendix). Figure 2 Under stress, the inner hole of housing 16 is centered to achieve positioning. After clamping, because the center of gravity of the worm end is not on the central axis, and the small end face of the gear shaft cannot overcome the self-weight of the worm end, the axial position is slightly tilted, resulting in a low success rate of riveting. Therefore, it is necessary to develop a new positioning fixture to solve the above problems existing in the riveting method of gear shaft of reducer assembly. Summary of the Invention

[0003] The purpose of this utility model is to provide a compact and ingeniously designed gear shaft riveting positioning fixture for gear assemblies that solves the problem of low riveting success rate in existing gear shaft riveting methods for gear assemblies.

[0004] The technical solution of this utility model is:

[0005] A gear shaft press-fit positioning fixture for a speed reducer assembly includes a base, a load-bearing block, a housing positioning plate, a guide support block, a guide rod, and a compression spring; characterized in that: a guide support block is mounted at the center of the base; a load-bearing block is fixed to the top of the guide support block by a locking screw; a housing positioning plate is slidably mounted on the guide support block; guide rods are symmetrically mounted on the base on both sides of the guide support block; a bushing is mounted on the housing positioning plate above the guide rod through a through hole; the guide rod extends into the bushing and is slidably connected thereto; and a compression spring is fitted onto the guide rod below the bushing.

[0006] The base has a central mounting internal thread hole; a guide support block is mounted on the base through the mounting internal thread hole; mounting holes are symmetrically arranged on both sides of the base through the mounting holes; and a guide rod is mounted on the base through the mounting holes.

[0007] The guide support block has a stepped structure; a housing positioning plate is slidably mounted in the middle of the guide support block.

[0008] The top of the load-bearing block is provided with a positioning end face; the center of the load-bearing block is provided with an assembly conical hole.

[0009] The housing positioning plate has a stepped sliding hole at its center; the housing positioning plate also has a stepped positioning surface on its circumference.

[0010] The advantages of this utility model are:

[0011] This gear shaft riveting and positioning fixture for reducer assembly is compact and ingeniously designed. It can complete the riveting and positioning of the gear shaft of the reducer assembly through two positioning methods, thereby solving the problem of low riveting success rate in existing gear shaft riveting methods for reducer assembly. It is particularly suitable for the needs of gear shaft riveting for reducer assembly. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the working structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the base of this utility model;

[0015] Figure 4 This is a cross-sectional structural diagram of the base of this utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the load-bearing block of this utility model;

[0017] Figure 6 This is a schematic diagram of the structure of the housing positioning plate of this utility model;

[0018] Figure 7 This is a schematic diagram of the structure of the guide support block of this utility model.

[0019] In the diagram: 1. Base; 2. Guide support block; 3. Locking screw; 4. Bearing block; 5. Housing positioning plate; 6. Guide rod; 7. Through hole; 8. Bushing; 9. Compression spring; 10. Assembly internal thread hole; 11. Mounting hole; 12. Positioning end face; 13. Assembly tapered hole; 14. Stepped sliding hole; 15. Stepped positioning surface; 16. Housing; 17. Gear shaft. Detailed Implementation

[0020] The gear shaft press-fit positioning fixture for the reducer assembly includes a base 1, a load-bearing block 4, a housing positioning plate 5, a guide support block 2, a guide rod 6, and a compression spring 9 (see the instruction manual appendix). Figure 1 and 2 ).

[0021] The base 1 has a guide support block 2 at its center (see instruction manual). Figure 1 and 2 ).

[0022] The base 1 has a centrally located internal threaded hole 10; a guide support block 2 is mounted on the base 1 through the internal threaded hole 10; mounting holes 11 are symmetrically arranged on both sides of the internal threaded hole 10 (see the appendix of the instruction manual). Figure 3 and 4 ).

[0023] The top of the guide support block 2 is fixed with a load-bearing block 4 by a locking screw 3 (see instruction manual appendix). Figure 1 The top of the load-bearing block 4 is provided with a positioning end face 12; the center of the load-bearing block 4 is provided with an assembly conical hole 13 (see the instruction manual appendix). Figure 5 The load-bearing block 4 is installed on the top of the guide support block 2 through the assembly tapered hole 13.

[0024] Guide support block 2 has a stepped structure (see instruction manual appendix). Figure 7 The guide support block 2 is slidably fitted with a housing positioning plate 5 (see the instruction manual appendix). Figure 1 and 6 ).

[0025] Guide rods 6 are symmetrically mounted on the base 1 on both sides of the guide support block 2 through mounting holes 11; bushings 8 are mounted on the housing positioning plate 5 above the guide rods 6 through through holes 7; the guide rods 6 extend into the bushings 8 and slide therein.

[0026] A compression spring 9 is fitted onto the guide rod 6 below bushing 8 (see instruction manual appendix). Figure 1 and 2 The compression spring 9 always has a tendency to push the housing positioning plate 5 upward through the bushing 8.

[0027] A stepped sliding hole 14 is provided at the center of the housing positioning plate 5; the stepped sliding hole 14 is slidably connected to the guide support block 2; a stepped positioning surface 15 is provided on the circumferential surface of the housing positioning plate 5 (see the appendix of the instruction manual). Figure 6 The diameter of the stepped positioning surface 15 is the same as the inner diameter of the housing 16.

[0028] When the gear shaft riveting and positioning fixture of the reducer assembly is working, the inner hole of the housing 16 first engages with the stepped positioning surface 15. The initial positioning is based on the large end face of the housing to determine the axis and the inner hole of the housing 16 to determine the center. This overcomes the self-weight of the worm end and ensures that the gear shaft is in a vertical state. The housing positioning plate 5 is supported by a compression spring 9. During the pressing process, the housing positioning plate 5 descends with the compression of the spring until the end face of the gear shaft 17 is subjected to force. At this time, the end face of the gear shaft 17 is positioned for the second time. The center of the inner hole of the housing 16 remains unchanged, and the riveting operation is completed. This achieves the purpose of improving the dimensional process capability after riveting and solves the problem of low riveting success rate in the existing gear shaft riveting method of reducer assembly.

[0029] This gear shaft riveting and positioning fixture for reducer assembly is compact and ingeniously designed. It can complete the riveting and positioning of the gear shaft of the reducer assembly through two positioning methods. During the riveting process, the housing positioning plate 5 provides auxiliary support, effectively overcoming the self-weight of the worm end and ensuring that the gear shaft of the reducer assembly is always in a vertical state. This solves the problem of low riveting success rate in existing gear shaft riveting methods for reducer assembly, and is particularly suitable for the needs of gear shaft riveting for reducer assembly.

Claims

1. A reducer assembly gear shaft press riveting positioning clamp, comprising a base (1), a force block (4), a shell positioning plate (5), a guide support block (2), a guide rod (6) and a compression spring (9); characterized in that: The base (1) is equipped with a guide support block (2) at its center; a load-bearing block (4) is fixed to the top of the guide support block (2) by a locking screw (3); a housing positioning plate (5) is slidably mounted on the guide support block (2); guide rods (6) are symmetrically mounted on the base (1) on both sides of the guide support block (2); a bushing (8) is mounted on the housing positioning plate (5) above the guide rod (6) through a through hole (7); the guide rod (6) extends into the bushing (8) and is slidably connected to it; a compression spring (9) is fitted on the guide rod (6) below the bushing (8).

2. A press-in-place fixture for a gear shaft of a reducer assembly gear according to claim 1, wherein: The base (1) is provided with an internal threaded hole (10) at its center; a guide support block (2) is installed on the base (1) through the internal threaded hole (10); mounting holes (11) are symmetrically provided on the base (1) on both sides of the internal threaded hole (10); a guide rod (6) is installed on the base (1) through the mounting holes (11).

3. A press-in place fixture for a gear shaft of a reducer assembly gear according to claim 1, wherein: The guide support block (2) has a stepped structure; a housing positioning plate (5) is slidably mounted in the middle of the guide support block (2).

4. A press-in place fixture for a gear shaft of a speed reducer assembly as set forth in claim 1, wherein: The top of the load-bearing block (4) is provided with a positioning end face (12); the center of the load-bearing block (4) is provided with an assembly conical hole (13).

5. A gear shaft press-fitting and positioning fixture for a speed reducer assembly according to claim 1, characterized in that: The housing positioning plate (5) is provided with a stepped sliding hole (14) at its center; the housing positioning plate (5) is provided with a stepped positioning surface (15) on its circumferential surface.

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