A CNC machine tool fixture for motor shell processing

Abstract

The invention discloses a numerically controlled machine tool fixture used for machining motor casings, which relates to a fixture and is used to solve the problem that ordinary fixtures easily cause deformation when clamping a casing, including a hydraulic three-grip chuck installed on a machine frame, It also includes a centering support block fixed on the claws of the hydraulic three-grip chuck, the number of the centering support blocks is equal to the number of the claws, and a plurality of centering support blocks are spliced ​​together to form a hollow centering column; the present invention has the following advantages and effects: the centering support block in the form of inner support can correct the casing in the process of supporting the casing, reducing the deviation of the central axis of the casing during the positioning process, so as to facilitate subsequent alignment Find the position of the central axis of the casing when cutting, and improve the coaxiality between the shaft hole on the casing and the inner cavity of the casing, so as to achieve the purpose of reducing the scrap rate of the casing.

Description

technical field [0001] The invention relates to a fixture, in particular to a numerically controlled machine tool fixture for machining motor casings. Background technique [0002] The motor is a very commonly used power component in the industry. One of the key factors determining its power conversion efficiency is the concentricity between the inner cavity of the motor and the through-shaft hole on the casing for the rotor to pass through. Therefore, when turning the through-shaft hole In the process, it is necessary to ensure its concentricity as much as possible, and the key to affecting this parameter lies in the clamping accuracy of the casing processing. Generally, the processing of the casing is carried out on the CNC machine tool, and the fixture is generally three-grip Chuck. [0003] At present, the Chinese invention with the authorized notification number CN206405449U discloses a high-efficiency three-grab chuck for machine tool processing, including a chuck bod...

AI Technical Summary

Problems solved by technology

[0004] For the above-mentioned three-grip chuck, in the process of clamping and fixing the casing, due to the small thickness of the casing, the extrusion of the claws on the casing will easily cause deformation of the casing, so the casing will It is difficult to ensure the coaxiality between it and the inner cavity of the casing, and the casing with too large deviation cannot be used and must be scrapped. Therefore, this clamping fixing method is easy to cause the machine Shell scrap rate is too high

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