Fork lug part and tool for pressing lantern ring on fork lug part

Abstract

The utility model provides a fork lug part. The fork lug part comprises a fork lug, a first connecting piece and a second connecting piece, one end of the step rod is connected with the fork lug; one end of the precision rod is connected with the other end of the step rod, and the other end of the precision rod is provided with threads; meanwhile, the utility model further provides a tool for press fitting of the lantern ring on the fork lug part, the tool comprises a base, the base is provided with an inner cylinder, a boss is arranged on the inner wall of the inner cylinder, the boss is used for assembling the lantern ring, and the inner cylinder is used for guiding the precision rod; the nylon cover with the threads is connected to the other end of the precision rod through the threads, and the nylon cover with the threads is used for protecting the threads arranged at the other end of the precision rod and preventing the precision rod from being scratched by the inner wall of the inner cylinder.

Description

Technical Field

[0001] This application belongs to the technical field of composite tooling, and particularly relates to a fork ear part and a tool for press-fitting a collar onto the fork ear part. Background Art

[0002] During the assembly process of fork ear parts, the cooperation between the tooling base and the parts is a difficult point. When in small clearance fit, the precision rod is scratched by the inner wall of the tooling, and when in large clearance fit, the fork ear part and the collar are not concentric. For this reason, a set of tools is designed. Summary of the Utility Model

[0003] In view of the above technical problems, on the first aspect, this application provides a fork ear part, which includes:

[0004] A fork ear;

[0005] A stepped rod, one end of which is connected to the fork ear;

[0006] A precision rod, one end of which is connected to the other end of the stepped rod, and a thread is provided at the other end of the precision rod.

[0007] Preferably, a communicating cavity is provided inside the stepped rod and the precision rod.

[0008] Preferably, the diameter of the stepped rod is greater than the diameter of the precision rod.

[0009] On the second aspect, this application also provides a tool for press-fitting a collar onto the fork ear part, and the tool includes:

[0010] A base having an inner cylinder, a boss is provided on the inner wall of the inner cylinder, the boss is used for assembling the collar, and the inner cylinder is used to guide the precision rod;

[0011] A threaded nylon cap is connected to the other end of the precision rod by a thread, and the threaded nylon cap is used to protect the thread provided at the other end of the precision rod and prevent the precision rod from being scratched by the inner wall of the inner cylinder.

[0012] Preferably, the base is of a T-shaped structure.

[0013] Preferably, one end of the inner cylinder is closed, the other end is open, and the boss is provided on the inner wall near the opening.

[0014] The beneficial technical effects of this application:

[0015] This application is convenient for positioning and has high working efficiency. It avoids the difficulties that during the assembly of parts, when there is a small clearance fit, the precision rod is scratched by the inner wall of the tooling, and when there is a large clearance fit, the fork ear part is not concentric with the collar. Due to the simple structure, convenient operation, and easy storage of this device, it not only effectively improves the working efficiency but also avoids the problem of the precision rod and thread being scratched during the assembly of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front view provided by the embodiment of this application;

[0017] Figure 2 is the sectional view provided by the embodiment of this application;

[0018] Figure 3 is the schematic diagram of the partially enlarged position provided by the embodiment of this application;

[0019] Figure 4 is the schematic diagram of the partially enlarged position 1 provided by the embodiment of this application;

[0020] Figure 5 is the schematic diagram of the partially enlarged position 2 provided by the embodiment of this application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] This application belongs to a new type of composite tooling and is a device for press-fitting a collar onto a fork ear part of a high-precision long rod with threads. This device consists of a threaded nylon cover for protecting the thread and a stepped base that has an interference fit with the nylon cover and serves as a force transmission and guiding function. During operation, the collar is passed through the high-precision long rod and clamped on the part column, and then the threaded nylon sleeve on the cover is rotated, and the whole is inserted into the base. The press applies force on the plane between the fork ears, and the assembly of the collar is completed through the transmission of force.

[0022] It should be noted that a step is machined in the tooling, and a threaded nylon cover is added according to the dimensional requirements. Considering the nylon material provides protection for the parts and ensures direct contact between a part and the inner wall of the tooling.

[0023] Please refer to Figures 1 - 5 , this application provides a set of tooling that meets the assembly requirements and protects the high-precision long rod and thread, including: a base 2-1 for guiding the long rod, and a threaded nylon cover 2-2 that can protect the thread is installed inside the base. The part consists of a stepped rod 1-1, a fork ear 1-2, a precision rod 1-3, and a thread 1-4. The outer circle of the threaded nylon cover has an interference fit with the inner cylinder of the tooling. The ingenuity of such a fit relationship lies in:

[0024] 1. It can protect the thread during the assembly process while avoiding scratching the high-precision long rod;

[0025] 2. The clearance between the long rod and the base is ensured to be 5 mm on one side, effectively avoiding the assembly process of the collar and the journal long rod.

[0026] In a feasible implementation manner, the assembly process of the present application is as follows:

[0027] 1. First, place the workpiece 2 on the press platform;

[0028] 2. Then, slip the collar 3 over the precision rod 1-3 of the part;

[0029] 3. Assemble the threaded nylon cap 2-2 on the part 1-4 and place the whole on the guiding post 2-1 of the tooling;

[0030] 4. Start the press and slowly apply the loading force to complete the press-fitting of the collar.

Claims

1. A fork ear part, characterized in that, The fork ear part includes: A fork ear; A stepped rod, one end of the stepped rod is connected to the fork ear; A precision rod, one end of the precision rod is connected to the other end of the stepped rod, and a thread is provided at the other end of the precision rod.

2. The fork ear part according to claim 1, characterized in that, A cavity communicating with each other is provided inside the stepped rod and the precision rod.

3. The fork ear part according to claim 2, characterized in that, The diameter of the stepped rod is larger than the diameter of the precision rod.

4. A tool for press-fitting a collar onto a fork ear part, characterized in that, The tool includes: A base having an inner cylinder, a boss is provided on the inner wall of the inner cylinder, the boss is used for assembling the collar, and the inner cylinder is used for guiding the precision rod; A threaded nylon cap is connected to the other end of the precision rod by a thread. The threaded nylon cap is used to protect the thread provided at the other end of the precision rod and prevent the precision rod from being scratched by the inner wall of the inner cylinder.

5. The tool according to claim 4, characterized in that The base is of a T-shaped structure.

6. The tool according to claim 4, characterized in that, One end of the inner cylinder is closed, the other end of the inner cylinder is open, and the boss is provided on the inner wall near the opening.

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