Workpiece grinding clamping tool

By combining a support shaft, a locking screw, and a clamping nut, and utilizing the design of an inclined top block and a movable seat, the problems of workpiece clamping offset and loosening are solved, achieving high-precision and stable workpiece clamping and improving the grinding effect.

CN224509342UActive Publication Date: 2026-07-17HARBIN XINHUA AVIATION IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HARBIN XINHUA AVIATION IND CO LTD
Filing Date
2025-08-08
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing clamping fixtures have problems with offset and loosening when clamping workpieces, especially when machining ring-shaped workpieces such as bearing outer rings and gear outer circles, making it difficult to guarantee clamping accuracy and stability.

Method used

The system employs a combination structure of support shaft, locking screw and clamping nut, and uses multiple inclined top blocks to position and clamp the workpiece body in both directions, ensuring that the workpiece body is on the central axis. Stable clamping of the workpiece is achieved by sliding the movable seat and the top blocks.

Benefits of technology

It improves the precision and stability of workpiece clamping, ensures the positioning accuracy and processing quality during the grinding process, and enhances processing efficiency and workpiece performance stability.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224509342U_ABST
    Figure CN224509342U_ABST
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Abstract

The utility model discloses a kind of clamping tool for workpiece grinding, it is related to tool fixture technical field, including main shaft, the one end of main shaft is fixedly installed with fixed seat, the outside of fixed seat is fixedly installed with support shaft, the one end of support shaft is fixedly installed with locking screw, the outside of support shaft is sleeved and is installed with workpiece main body, the outside of locking screw is installed with compression nut by thread.This utility model can be tightly pressed in the outside of support shaft by setting support shaft, locking screw and compression nut, to realize the clamping of workpiece main body, by setting top block, in the process of workpiece main body installation in the outside of support shaft, multiple top blocks are guided to the inner wall of workpiece main body by the inclined surface of its outside, so that support shaft is always kept on the central axis of workpiece main body, so as to guarantee the clamping accuracy of workpiece main body, compared with prior art, the present technical solution can realize active positioning to workpiece main body.
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Claims

1. A workpiece grinding fixture, comprising a spindle (1), characterized in that: A fixed base (2) is fixedly installed at one end of the main shaft (1). A support shaft (3) is fixedly installed on the outer side of the fixed base (2). A locking screw (4) is fixedly installed at one end of the support shaft (3). A workpiece body (5) is sleeved on the outer side of the support shaft (3). A clamping nut (6) is threaded onto the outer side of the locking screw (4), and the inner side of the clamping nut (6) is in contact with the outer side wall of the workpiece body (5). A cavity (7) is provided inside the fixed base (2). A movable seat (8) is slidably installed inside the cavity (7). A telescopic guide rod (18) is installed between the movable seat (8) and the inner side wall of the cavity (7). A plurality of top blocks (9) are mounted around one side of the movable seat (8). The side of the plurality of top blocks (9) away from the movable seat (8) is set with an inclined structure. A plurality of through slots (10) are opened around one side of the inner wall of the cavity (7). The plurality of top blocks (9) are slidably installed inside the plurality of through slots (10). One side of the plurality of top blocks (9) is in contact with the inner side wall of the workpiece body (5). A positioning block (11) is fixedly installed in the middle of the side of the movable seat (8) away from the top blocks (9). A pressure block (12) is provided on one side of the positioning block (11). The side of the pressure block (12) and the positioning block (11) that are close to each other are both set with an inclined structure.

2. The workpiece grinding clamp tool according to claim 1, wherein: The bottom end of the pressure block (12) is rotatably mounted with a tightening screw (13) via a bearing. The bottom end of the inner side wall of the cavity (7) is provided with a screw hole (14), and the tightening screw (13) is provided inside the screw hole (14).

3. The workpiece grinding clamp tool according to claim 2, wherein: The bottom end of the tightening screw (13) is fixedly installed with an internal hexagonal nut (15), and the bottom end of the screw hole (14) is provided with a storage groove, and the internal hexagonal nut (15) is slidably disposed in the storage groove.

4. The workpiece grinding clamp tool according to claim 1, wherein: A tension spring (16) is fixedly installed on the middle of the side of the movable seat (8) away from the positioning block (11), and the middle of the inner wall of the cavity (7) at one end of the tension spring (16) is connected to it.

5. The workpiece grinding clamp tool according to claim 1, wherein: The main shaft (1) is fixedly installed with a clamping part (17) at one end away from the fixed seat (2), and the outer side wall of the clamping part (17) is provided with multiple grooves.

6. The workpiece grinding clamp tool of claim 1, wherein: One end of the locking screw (4) is designed as a tapered structure.

7. The workpiece grinding clamp tool of claim 1, wherein: The clamping nut (6) has a washer on the side near the fixing seat (2).