一种轴瓦加工夹具

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By incorporating grooves and insertion parts on the outer wall of the bearing bush, combined with a sleeve and insert structure, the problem of difficult pin removal during bearing bush grinding is solved, achieving high-precision positioning and convenient removal, thus improving the efficiency of bearing bush inner wall grinding.

CN224509340UActive Publication Date: 2026-07-17ZHEJIANG SHENFA BEARING CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: ZHEJIANG SHENFA BEARING CO LTD
Filing Date: 2025-07-10
Publication Date: 2026-07-17

AI Technical Summary

Technical Problem

In existing bearing bush machining fixtures, the pins fit too tightly with the bearing bush during bearing bush grinding, making it difficult to pull out and affecting positioning accuracy and operating efficiency.

Method used

A bearing bush machining fixture was designed. By providing a groove on the outer wall of the bearing bush, inserting the insertion part into the groove, and using a sleeve and insert block structure, the sleeve moves up and down to push the bearing bush away from the insert pin. Combined with fasteners, the insert pin is restricted from being pulled out, thereby improving positioning accuracy and convenience.

Benefits of technology

It achieves high-precision positioning and convenient removal of the bearing bush, improving the efficiency and accuracy of grinding the inner wall of the bearing bush.

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Abstract

本实用新型公开了一种轴瓦加工夹具，包括底板二，底板二安装有插销，插销轴向垂直于底板二上端面，插销上端伸出底板二上端面，插销上端用于限位轴瓦，插销上端插入轴瓦底部；包括压板、固定座，压板长度方向两端分别向下压紧固定座顶部、轴瓦顶部；压板底部安装有插块，轴瓦外壁设有凹槽，插块插入凹槽；包括套筒，套筒能够上下移动，套筒上端抵接插块，套筒向上移动以推动插块、轴瓦，以使轴瓦向上脱离插销。本实用新型提供一种轴瓦加工夹具，提高轴瓦定位精度，且方便轴瓦取出。

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Claims

1. A bearing bush machining jig, characterised in that, Includes a base plate two (2), on which a pin (3) is installed. The pin (3) is axially perpendicular to the upper end face of the base plate two (2). The upper end of the pin (3) extends out of the upper end face of the base plate two (2). The upper end of the pin (3) is used to limit the bearing bush (7). The upper end of the pin (3) is inserted into the bottom of the bearing bush (7). Includes a pressure plate (5) and a fixing seat (6), wherein the two ends of the pressure plate (5) press down on the top of the fixing seat (6) and the top of the bearing (7) respectively in the length direction; The bottom of the pressure plate (5) is equipped with a plug (52), and the outer wall of the bearing bush (7) is provided with a groove (71), and the plug (52) is inserted into the groove (71); Includes a sleeve (4) that can move up and down. The upper end of the sleeve (4) abuts against the insert (52). The sleeve (4) moves upward to push the insert (52) and the bearing (7) so that the bearing (7) disengages upward from the pin (3).

2. A bearing shell machining jig according to claim 1, characterized in that The plug (52) includes a plug portion (521) that is inserted into the groove (71).

3. A bearing bush machining jig according to claim 1, wherein Includes a shaft (33) that passes through the pressure plate (5). The bottom of the shaft (33) is fixed. A plate (53) and a fastener three (331) are installed on the top of the shaft (33). The plate (53) is fitted into the shaft (33). The bottom surface of the plate (53) presses against the pressure plate (5). The fastener three (331) is threaded into the top of the shaft (33) and presses against the top surface of the plate (53).

4. A bearing shell machining jig according to claim 3, wherein The base plate 2 (2) is fitted with fastener 2 (32), which is fixedly connected to the bottom of the shaft (33).

5. A bearing shell machining jig according to claim 4, wherein The second base plate (2) is provided with a through hole (21), and the second fastener (32) is inserted into the through hole (21). The bottom of the second base plate (2) is provided with a first base plate (1), and the first base plate (1) is provided with a countersunk hole (11). The second fastener (32) includes an extension (321) located at the bottom. The extension (321) is inserted into the countersunk hole (11), and the outer diameter of the extension (321) is larger than the diameter of the through hole (21).

6. A bearing shell machining jig according to claim 5, wherein The base plate (1) is fitted with a fastener (31), and the upper end of the fastener (31) is threadedly inserted into the bottom of the pin (3).

7. A bearing bush machining jig according to claim 1, wherein An extension seat (41) is installed on the outer wall of the sleeve (4), and a plug rod (42) is installed on the extension seat (41). A movable plate (43) is installed at the bottom of the plug rod (42), and the movable plate (43) is driven to move up and down by a driving component (44).

8. A bearing bush machining jig according to claim 1, wherein The inner peripheral wall of the sleeve (4) is in contact with the outer peripheral wall of the bearing (7).

9. A bearing bush machining jig according to claim 3, wherein The pressure plate (5) is provided with a groove (51), the groove (51) forms an opening on the side of the pressure plate (5) facing the center of the bearing (7), and the shaft (33) passes through the groove (51).

10. A bearing shell machining jig according to claim 9, wherein The width of the groove (51) is smaller than the outer diameter of the plate (53).