High-precision permanent magnet seat grinding method

Abstract

The invention belongs to a processing technology for a precision component made of special material, and relates to a processing method for high-precision benchmark conversion of parts made of soft magnetic alloy. An auxiliary positioning tool is arranged, and the problem of mutual verticality of a plurality of surfaces can be solved; a high-precision benchmark block is matched for conversion of measurement benchmarks, and the problem that actual processing dimensions cannot be determined easily can be solved; the tool is adopted for conversion of the processing benchmarks, a processing supply terminal is arranged, and the defects that each part needs to be centered and measured each time when being processed can be overcome; and moreover, magnetic weakening can be avoided through optimizing processing parameters and selecting reasonable sand wheels and cooling methods. Compared with the conventional processing method, the problems of the traditional method that the parts cannot be clamped and positioned easily and need to be clamped and centered multiple times during processing can be solved; high position accuracy and dimensional accuracy of side faces can be guaranteed at the same time; and the processing efficiency can be increased greatly, good dimensional consistency can be maintained, and the processing quality can be stabilized.

Description

technical field [0001] The invention relates to a grinding method, in particular to a grinding method of a soft magnetic alloy high-precision permanent magnet base. Background technique [0002] The material of the permanent magnet base of an accelerometer is 1J50 soft magnetic alloy. The size and position accuracy of the parts are required to be high, and the verticality, flatness and parallelism of the planes on it must be guaranteed at the same time. Since the part has a round and square structure, the processing elements are two sets of square parallel surfaces, and the processing reference plane is an outer circle, so it is difficult to clamp. At the same time, the maximum distance error between the surface to be processed and the centerline of the round platform is within 0.01mm. The machining allowance of the surface to be processed is determined based on the outer circle, or the high point value of the outer circle is measured after straightening the plane. Due to th...

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Problems solved by technology

[0004] The purpose of the present invention is: in order to solve the problems of repeated clamping and positioning, difficult measurement and poor precision in the processing of the accelerometer permanent magnet base parts in the prior art; solve the problem of magnetic weakening caused by high cutting heat generated during cutting; Two sets of flatness and perpendicularity requirements and the magnetic function requirements of the parts, the invention provides a method that can effectively locate and install accelerometer permanent magnet seat parts in flat grinding processing, while ensuring perpendicularity, symmetry and high dimensional accuracy Requirements, reduce repeated clamping positioning and measurement methods in processing, and propose suitable grinding parameters for such materials

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