一种机床加工用工件夹具
By designing an openable sliding block and a fixed clamping structure, combined with a thrust component and spring design, the problems of complexity and error in existing fixture structures are solved, achieving stable workpiece flipping and simplified operation, making it suitable for more processing scenarios.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGCHUN MEIKE AUTOMOBILE SPARE PARTS
- Filing Date
- 2025-08-11
- Publication Date
- 2026-07-17
AI Technical Summary
Existing fixtures for machining cylindrical parts are complex in structure and have errors. In particular, when the motor output shaft and the center axis of the part to be machined are not on the same straight line, they cause eccentricity, making them unsuitable for small machining equipment and affecting machining accuracy.
It adopts a sliding block and fixed clamp structure that can be opened and closed. The workpiece is flipped by rotating the fixed clamp. The combination of thrust and spring design ensures clamping stability. The fixed clamp is locked by the insertion of the protrusion and the slot, which simplifies the flipping structure and improves applicability.
It simplifies the fixture structure, improves clamping stability and applicability, is suitable for workpiece machining in more situations, reduces maintenance complexity and errors, and ensures machining stability.
Smart Images
Figure CN224509081U_ABST
Abstract
Claims
1. A workpiece holder for machine tool machining, characterized by, The workpiece fixture includes: A base that can be mounted on a machine tool; Two sets of oppositely arranged sliding blocks (31) are mounted on the base and can be opened and closed on the base; Each of the two sliding blocks (31) is provided with a fixing clip (32) on one side opposite to the other, and the fixing clip (32) is rotatably connected to the sliding block (31). After the workpiece is machined on one side, it can be rotated 180° by rotating the fixing clamp (32).
2. A workpiece holder for machine tool machining as claimed in claim 1, characterized in that: The base has a drive assembly (5) on one side, and the drive assembly (5) drives two sliding blocks (31) to open and close. The drive assembly (5) includes a lead screw (51), and the lead screw (51) passes through the two sliding blocks (31) at the same time. The lead screw (51) has a set of threads on its outer side and near its end. The two sets of threads have opposite helical directions, and the two sliding blocks (31) are respectively connected to one of the sets of threads.
3. A workpiece holder for machine tool machining as claimed in claim 2, characterized in that: The base is provided with a positioning element, which is located between two sliding blocks (31) and connected to the middle of the lead screw (51) through a bearing. When the lead screw (51) rotates, the two sliding blocks (31) move closer to or further away from the positioning element under the action of the external thread of the lead screw (51).
4. A workpiece holder for machine tool processing as claimed in claim 1, characterized in that: The back of the fixed clamp (32) is connected to a thrust member (34), and one end of the thrust member (34) is connected to the sliding block (31), and the other end is connected to the fixed clamp (32) through a bearing; wherein, the central axes of the two thrust members (34) are on the same straight line, and when the workpiece is clamped between the two fixed clamps (32), the workpiece can rotate around the central axis of the thrust member (34).
5. A workpiece holder for machine tool working as defined in claim 4, wherein: The thrust member (34) includes a sleeve (341) located inside the sliding block (31) and a cylindrical pin (342) connected to the fixed clamp (32) by a bearing, and the cylindrical pin (342) is inserted into the sleeve (341). A compression spring is connected between the sliding block (31) and the fixed clamp (32), and the compression spring is sleeved on the outside of the sleeve (341) and the cylindrical pin (342); when the fixed clamp (32) is not subjected to external force, the fixed clamp (32) moves outward under the elastic force of the spring; When the fixing clamp (32) and the sliding block (31) are in contact, the end of the cylindrical pin (342) is not in contact with the inner bottom surface of the sleeve (341).
6. A workpiece holder for machine tool working as defined in claim 5, wherein: The sliding block (31) has a strip groove on the side facing the fixed clamp (32), which corresponds to the protrusion (33) on the fixed clamp (32), and the strip groove is set in the horizontal direction; during workpiece processing, the protrusion (33) is located in the strip groove.
7. A workpiece holder for machine tool processing as defined in claim 4, wherein: One end of the fixing clip (32) is provided with a baffle (35), and the baffle (35) is divided into two parts: one part is an extension that is consistent with the length direction of the fixing clip (32), and the other part is a blocking part located on the extension. When the workpiece is located in the groove on the surface of the fixed clamp (32), the blocking part on the baffle (35) is located on the path of the workpiece moving back and forth.
8. A workpiece holder for machine tool machining as defined in claim 7, characterized in that: The sum of the length of the half of the length of the fixed clip (32) and the length of the extension in the baffle (35) is less than the distance from the pushing element (34) to the positioning element; the end baffle (35) of the fixed clip (32) does not contact the positioning element when the fixed clip (32) rotates.