Detachable copper embedded thread locking method for titanium alloy shaft sleeve and steel threaded shaft

Abstract

The invention provides a detachable copper embedded thread locking method for a titanium alloy shaft sleeve and a steel threaded shaft, and belongs to the field of metal processing methods. The problems that in an existing jackscrew thread locking method, the outer surfaces of shaft parts are damaged, and the locking effect cannot meet the precise locking requirement are solved. Firstly, a threaded jackscrew made of tin bronze is screwed into a hole in the side face of a titanium alloy shaft sleeve, the bottom face of the threaded jackscrew exceeds the inner diameter face of the shaft sleeve, then a shaft sleeve and the bottom face of the jackscrew are screwed, then a steel threaded shaft is screwed into a designated position, the jackscrew is locked with the locking force of 20-40 N.m through a wrench, and when the threaded shaft is screwed out, the jackscrew needs to be unscrewed firstly. By means of elastic deformation of the bottom threads of the tin bronze thread jackscrew, the tin bronze thread jackscrew is attached to the steel threaded shaft during locking, looseness is avoided, and the threads of the jackscrew can be recovered after the thread shaft is screwed out. The thread fastening force is effectively improved, the outer surface of the shaft part does not need to be damaged, repeated use can be achieved, and remarkable advantages are achieved in the aspects of improving connection reliability and reducing cost.

Description

Technical Field

[0001] This invention relates to thread locking methods, and more particularly to a detachable copper-embedded thread locking method for titanium alloy bushings and steel threaded shafts, belonging to the field of metal processing methods. Background Technology

[0002] The threaded locking method uses a set screw to hold the shaft in place. Utilizing the friction and locking force of the threads, pressure is applied by rotating the set screw, preventing the shaft inside the bushing from moving back and forth and thus preventing relative positional changes between the shaft and bushing during use. When disassembly is required, the pressure is released by rotating the set screw, thereby loosening the previous locking condition.

[0003] Existing set screw thread locking methods use set screws with flat or pointed bottoms made of steel. Countersunk holes need to be machined on the outer surface of the shaft to ensure the set screw is embedded and prevent stripping. The disadvantages of this method are that it damages the outer surface of shaft parts, failing to meet the technical requirement that such damage to the outer surface of shaft parts is unacceptable; the fit between the set screw and the set screw hole is not tight enough, resulting in poor locking performance, and it cannot meet the requirements of precision locking applications. Summary of the Invention

[0004] A brief overview of the invention is given below to provide a basic understanding of certain aspects of it. It should be understood that this overview is not an exhaustive summary of the invention. It is not intended to identify key or essential parts of the invention, nor is it intended to limit the scope of the invention. Its purpose is merely to present certain concepts in a simplified form as a prelude to the more detailed description that follows.

[0005] In view of this, in order to solve the practical problems of damage to the outer surface of shaft parts and failure to meet the precision locking requirements in existing set screw thread locking methods, the present invention provides a detachable copper embedded thread locking method for titanium alloy bushings and steel threaded shafts.

[0006] A method for locking a detachable copper-embedded threaded shaft for titanium alloy bushings and steel threaded shafts includes the following steps;

[0007] S1. Screw the threaded set screw into the hole on the side of the bushing, so that the bottom surface of the threaded set screw exceeds the inner diameter surface of the bushing;

[0008] S2. The internal thread of the axle sleeve and the bottom thread of the set screw;

[0009] S3. Screw the threaded shaft into the designated position;

[0010] S4. Use a wrench to tighten the threaded set screw;

[0011] The threaded set screw is made of tin bronze, the bushing is made of titanium alloy, and the threaded shaft is made of steel.

[0012] Furthermore, the bottom thread of the threaded set screw has elastic deformation.

[0013] Furthermore, the tightening force of the wrench is 20-40 N·m.

[0014] The present invention has the following advantages over the prior art:

[0015] 1. In the field of threaded locking, the set screw and the locked part are in threaded contact, which has good anti-loosening performance;

[0016] 2. The set screw of this invention is made of tin bronze. When the set screw is engaged with the locked part, it will not cause mechanical damage to the thread on the surface of the locked part. The thread on the bottom surface of the set screw can return to its original state under the action of elastic deformation, so as to achieve repeated use. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 This is a schematic diagram of a detachable copper-embedded thread locking method for titanium alloy bushings and steel threaded shafts.

[0019] In the diagram: 1-threaded set screw, 2-sleeve, 3-threaded shaft. Detailed Implementation

[0020] To make the technical solutions and advantages of the embodiments of the present invention clearer, the exemplary embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0021] Example 1, Reference Figure 1 This embodiment describes a method for locking a detachable copper-embedded threaded shaft for titanium alloy bushings and steel threaded shafts, which specifically includes the following steps;

[0022] S1. Screw the threaded set screw 1 into the side hole of the bushing 2, so that the bottom surface of the threaded set screw 1 exceeds the inner diameter surface of the bushing 2;

[0023] S2. The internal thread of the axle sleeve 2 and the bottom thread of the thread set screw 1;

[0024] S3. Screw the threaded shaft 3 into the designated position;

[0025] S4. Use a wrench to tighten the threaded set screw 1;

[0026] The threaded set screw 1 is made of tin bronze, the bushing 2 is made of titanium alloy, and the threaded shaft 3 is made of steel.

[0027] Furthermore, the bottom thread of the threaded set screw 1 has elastic deformation, so that the bottom thread of the threaded set screw 1 undergoes elastic deformation under the action of external force and closely fits the external thread of the threaded shaft 3. When disassembling, after unscrewing the threaded shaft 3, the bottom thread of the threaded set screw 1 returns to its original state under the action of elastic deformation. It can be reused 6 times after testing.

[0028] Furthermore, the tightening force of the wrench is 20-40 N·m.

[0029] This invention uses aluminum bronze, brass, and copper as materials for machining the threaded set screw 1. Through actual verification, the threads at the bottom of the threaded set screw 1 made of the above materials were damaged to varying degrees during the process of unscrewing the threaded shaft 3. When the threaded shaft 3 was forcibly unscrewed and then screwed back in, the threaded set screw 1 could not be locked again, and the repeated use function of the threaded set screw 1 could not be realized.

[0030] This invention enables the set screw to maintain good anti-loosening properties without causing mechanical damage to the threaded shaft surface of the component, thereby enhancing the safety and stability of the overall device. Furthermore, this invention allows for the repeated use of the set screw, reducing material consumption and aligning with the concept of sustainable development.

[0031] Although the invention has been described with reference to a limited number of embodiments, those skilled in the art will understand from the foregoing description that other embodiments are conceivable within the scope of the invention described herein. Furthermore, it should be noted that the language used in this specification has been chosen primarily for readability and instructional purposes, and not for the purpose of interpreting or limiting the subject matter of the invention. Therefore, many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the appended claims. The disclosure of the invention is illustrative and not restrictive, and the scope of the invention is defined by the appended claims.

Claims

1. A method for locking detachable copper-embedded threads for titanium alloy sleeves and steel threaded shafts, characterized in that: Specifically include the following steps: S1. Screw the threaded top screw (1) into the side hole of the sleeve (2) so that the bottom surface of the threaded top screw (1) exceeds the inner diameter surface of the sleeve (2); S2. Axle sleeve (2) internal thread and threaded top wire (1) bottom thread; S3. Screw the threaded shaft (3) into place until it reaches the specified position; S4. Use a wrench to tighten the threaded top screw (1); The threaded top wire (1) is made of tin bronze, the shaft sleeve (2) is made of titanium alloy, and the threaded shaft (3) is made of steel.

2. A method for locking a titanium alloy sleeve and a steel threaded shaft with a removable copper-embedded thread according to claim 1, characterized in that: The bottom thread of the thread top screw (1) has elastic deformation.

3. A method for locking a titanium alloy sleeve and a steel threaded shaft with a removable copper-embedded thread according to claim 1, characterized in that: The locking force of the wrench is 20-40 Nm.

Images