Hydraulic clamp for processing spindle taper hole

Abstract

The invention discloses a hydraulic clamp for processing spindle taper hole, which realizes grinding instead of milling, solves the problem of coaxiality between a spindle bearing shift of a core part spindle on the high-speed electrical spindle of the core part of a high-speed numerically controlled machine tool and a spindle taper hole, and improves the manufacturing precision of the core part spindle on the high-spindle electrical spindle. The hydraulic clamp comprises a clamp body, wherein the rear end of the clamp body is coaxially connected to the spindle of the precise numerically controlled machine tool; the front end of the clamp and the clamp are coaxially sleeved with an outer expansion sleeve for clamping parts to be processed; the clamp body comprises an inner radiate hydraulic pipeline system which uniformly pressures the inner wall of the outer expansion sleeve; and the radiate hydraulic pipeline system comprises a plurality of radiate hydraulic pipelines with the same aperture, which radiate the later wall of the clamp body uniformly by taking a central axis of the outer expansion sleeve as the centre.

Description

Technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a hydraulic clamp used for processing small taper holes of a spindle. The spindle is a core component of a high-speed numerical control lathe-a core component of a high-speed electric spindle. Background technique [0002] In order to meet the performance requirements of high-speed, high-precision, low-vibration, and low-noise CNC machine tools, high-speed motorized spindles are the core functional components of high-speed CNC machine tools, and their quality is directly related to the accuracy of CNC machine tools. The core part of the high-speed electric spindle is the spindle. The key requirement for manufacturing accuracy is the coaxiality between the bearing gear at both ends and the spindle taper hole. Generally, it is required to be controlled within 0.002mm and the surface roughness Ra0.8μm. Among them, small taper holes are particularly difficult to manufacture....

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects and deficiencies in the prior art, the present invention provides a hydraulic fixture for machining small taper holes of the main shaft, which solves the problem of coaxiality between the main shaft bearing gear and the small taper hole of the main shaft, and improves the manufacturing accuracy of the main shaft; Spindle is the core component of high-speed CNC lathe-the core part of high-speed electric spindle

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