A miniature ball bushing guide assembly

Abstract

The utility model discloses a kind of miniature ball bushing guide assemblies, including bearing sleeve, main shaft, ball sleeve and dowel pin, the inside of the bearing sleeve is equipped with movable chamber, the main shaft is movably inserted in the movable chamber, the middle part of the main shaft is equipped with ball sleeve, several balls are rotatably arranged on the ball sleeve by several ball retainers, the ball sleeve is rolled contact with the cavity wall of the movable chamber by the several balls, the bearing sleeve is equipped with the dowel pin strip slot being communicated with the movable chamber, the middle part of the main shaft is inserted with dowel pin, the dowel pin is movably matched with the dowel pin strip slot.The miniature ball bushing guide assembly provided by the utility model can greatly save installation space while maintaining performance, and high-precision linear motion or rotary motion can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing, specifically to a miniature ball bushing guide assembly. Background Technology

[0002] Automated production lines are now ubiquitous in the machinery manufacturing industry, and the requirements for the precision of mechanical motion in production are becoming increasingly stringent. Linear and rotary motion centered on axes is widespread in mechanical automation, primarily achieved using guide components. However, existing guide components often suffer from insufficient precision in achieving linear or rotary motion due to the relative movement gaps between components. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a miniature ball bushing guide assembly.

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

[0005] A miniature ball bushing guide assembly includes a bearing sleeve, a main shaft, a ball bushing, and a locating pin. The bearing sleeve has a movable chamber inside, and the main shaft is movably inserted into the movable chamber. The ball bushing is fitted in the middle of the main shaft, and several balls are rotatably disposed on the ball bushing through several ball retainers. The ball bushing makes rolling contact with the cavity wall of the movable chamber through the several balls. The bearing sleeve has a locating pin groove that communicates with the movable chamber, and a locating pin is inserted in the middle of the main shaft. The locating pin is movably adapted to the locating pin groove.

[0006] Furthermore, the ball sleeve includes a first ball sleeve and a second ball sleeve, and the main shaft is movably inserted into the movable chamber through the first ball sleeve and the second ball sleeve arranged front and rear, and the positioning pin is located between the first ball sleeve and the second ball sleeve.

[0007] Furthermore, one end of the bearing sleeve is equipped with a plug that limits the first ball sleeve, and the other end of the bearing sleeve is equipped with a fixing sleeve that limits the second ball sleeve.

[0008] Furthermore, the bearing sleeve is a steel sleeve.

[0009] Furthermore, the spindle is a steel spindle.

[0010] Furthermore, the ball is a steel ball, and the ball retainer is made of copper alloy.

[0011] Furthermore, the length of the positioning pin groove is 10.5 mm.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the miniature ball bushing guide assembly provided by this utility model can save a lot of installation space while maintaining performance, and can realize high-precision linear or rotary motion. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 A schematic diagram of the external structure of a miniature ball bushing guide assembly provided by this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of a miniature ball bushing guide assembly provided by this utility model. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] To illustrate the technical solution described in this utility model, specific embodiments are described below.

[0018] Example

[0019] Please see Figure 1 , Figure 2 This embodiment provides a miniature ball bushing guide assembly, including a bearing sleeve 1, a main shaft 2, a ball bushing 3, and a locating pin 4. The bearing sleeve 1 has an internal movable chamber 11, and the main shaft 2 is movably inserted into the movable chamber 11. The ball bushing 3 is fitted onto the middle of the main shaft 2. Several balls 301 are rotatably mounted on the ball bushing 3 via ball retainers. The ball bushing 3 makes rolling contact with the cavity wall of the movable chamber 11 through the balls 301. The bearing sleeve 1 has a locating pin groove 12 communicating with the movable chamber 11. The locating pin 4 is inserted into the middle of the main shaft 2, and the locating pin 4 is movably adapted to the locating pin groove 12. Its structural principle is: low-friction, high-precision linear or rotary motion is achieved through the rolling contact between the balls 301 and the bearing sleeve 1.

[0020] Specifically, the ball sleeve 3 includes a first ball sleeve 31 and a second ball sleeve 32. The main shaft 2 is movably inserted into the movable chamber 11 through the first ball sleeve 31 and the second ball sleeve 32, which are arranged front and rear. The positioning pin 4 is located between the first ball sleeve 31 and the second ball sleeve 32. One end of the bearing sleeve 1 is equipped with a plug 5 to limit the first ball sleeve 31, and the other end of the bearing sleeve 1 is equipped with a fixing sleeve 6 to limit the second ball sleeve 32, so as to prevent the first ball sleeve 31 and the second ball sleeve 32 from falling out.

[0021] In this embodiment, the bearing sleeve 1 is a steel sleeve, and the main shaft 2 is a steel shaft. Both the bearing sleeve 1 and the main shaft 2 are made of high-strength steel and undergo strict heat treatment and precision grinding to improve hardness and wear resistance.

[0022] In this embodiment, the ball bearing 301 is a steel ball, which should meet the JIS B 1501 precision grade standard, and the sphericity tolerance of the steel ball should be controlled within 0.0003 mm; the ball retainer is made of copper alloy. This structure can stably maintain the position of the steel ball even under high-speed and frequent operation, preventing the steel ball from falling out or becoming misaligned, thereby ensuring the reliability of the guide system during long-term operation.

[0023] Preferably, the cavity wall of the active chamber 11 is precision-processed to reduce the coefficient of friction and reduce wear.

[0024] In this embodiment, the length of the positioning pin groove 12 is 10.5 mm. This length is the stroke of the miniature ball bushing guide assembly. Of course, the length of the positioning pin groove 12 can also be determined according to requirements.

[0025] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A miniature ball bushing guide assembly, characterized in that: The device includes a bearing sleeve, a main shaft, a ball bearing sleeve, and a locating pin. The bearing sleeve has a movable chamber inside, and the main shaft is movably inserted into the movable chamber. A ball bearing sleeve is fitted in the middle of the main shaft, and several balls are rotatably mounted on the ball bearing sleeve through several ball retainers. The ball bearing sleeve makes rolling contact with the cavity wall of the movable chamber through the several balls. A locating pin groove is formed on the bearing sleeve and communicates with the movable chamber. A locating pin is inserted in the middle of the main shaft, and the locating pin is movably adapted to the locating pin groove.

2. The miniature ball bushing guide assembly according to claim 1, characterized in that: The ball bushing includes a first ball bushing and a second ball bushing. The main shaft is movably inserted into the movable chamber through the first ball bushing and the second ball bushing, which are arranged front and rear. The positioning pin is located between the first ball bushing and the second ball bushing.

3. A miniature ball bushing guide assembly according to claim 2, characterized in that: One end of the bearing sleeve is equipped with a plug that limits the first ball sleeve, and the other end of the bearing sleeve is equipped with a fixing sleeve that limits the second ball sleeve.

4. A miniature ball bushing guide assembly according to claim 1, characterized in that: The bearing sleeve is a steel sleeve.

5. A miniature ball bushing guide assembly according to claim 1, characterized in that: The main shaft is a steel shaft.

6. A miniature ball bushing guide assembly according to claim 1, characterized in that: The ball is a steel ball, and the ball retainer is made of copper alloy.

7. A miniature ball bushing guide assembly according to claim 1, characterized in that: The length of the positioning pin groove is 10.5 mm.

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