Clamp with repeated clamping function for numerical control machine tool

Abstract

The invention belongs to the technical field of machine tool clamps, and particularly relates to a clamp with a repeated clamping function for a numerical control machine tool. The clamp comprises a chuck, clamping jaw mechanisms, first adjusting rods and a coiled wire. According to the designed clamp, during adjustment, firstly, eight clamping blocks in four clamping jaws slightly clamp a workpiece by driving one of the three first adjusting rods, but a spindle can drive the workpiece to rotate through the clamp under the clamping force, but the clamping force is not clamping force during turning work, a worker can observe the installation condition of the workpiece under the clamping force to judge whether the workpiece jumps or not, then each adjusting mechanism is controlled to adjust two adjusting blocks on the corresponding side according to the jumping condition, then the adjusting blocks extrude two corresponding clamping jaws, and four clamping blocks in the two clamping jaws adjust the installation state of the workpiece upwards or downwards or leftwards or rightwards through respective swinging, so that the final machining precision of the workpiece is guaranteed.

Description

[0001] Technical field

[0002] The invention belongs to the technical field of machine tool fixtures, in particular to a repeatable clamping fixture for a numerically controlled machine tool. Background technique

[0003] At present, the processing of shaft parts in machine tools generally requires one clamping to complete the processing. If multiple clampings are required, the coaxiality of the front and rear ends of the part must be judged by the experience of the tool and the staff in the subsequent clamping. , and then to ensure the machining accuracy; when clamping, if repeated clamping and correction are performed, the change of the clamping position after re-clamping and the wear of the clamping parts at the front and rear ends of the part due to the previous clamping may affect the part. The coaxiality of the processing surfaces at both ends, especially for parts with a certain length, and when re-clamping, the adjustment process is often cumbersome and difficult to a...

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