Cutter device for improving machining precision of thin and long shaft

Abstract

The invention relates to a cutter device for improving the machining precision of a thin and long shaft. The cutter device comprises a cutter rest and three blades installed on the cutter rest, wherein the blades are uniformly installed on the cutter rest and are arranged in the radial direction at intervals of 120 degrees. Compared with the prior art, the flexible deformation of the machined thinand long shaft during cutting is decreased, the dynamic rigidity is improved, stress is uniform, and small-feed high-precision surface machining is achieved. In addition, efficient machining is completed while coarse machining is achieved by changing the arrangement mode of three blades in the axial direction and the cutting depth in the radial direction.

Description

Technical field

[0001] The invention relates to a machining tool, in particular to a tool device for improving the machining accuracy of a slender shaft. Background technique

[0002] Slender shaft parts, such as machine tool spindles, have a turning surface cutting process. Because the slender shaft has large flexibility and low rigidity, it is difficult to guarantee the machining accuracy. In order to improve its machining accuracy, a support frame structure is usually used to increase the rigidity of the slender shaft and offset the influence of gravity and cutting force during machining. However, the support frame structure of the slender shaft auxiliary device has a large volume and can only be set in certain positions in advance. Only in the support part has the best rigidity and high processing accuracy, while the accuracy is still difficult to guarantee at the part far away from the support. Furthermore, the structure of the support frame is relatively complicated, and w...

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