Joint surface error and joint surface tolerance optimization method for machine tool fixture component

Abstract

The invention relates to a joint surface error and joint surface tolerance optimization method for a machine tool fixture component. According to the prior art, the quality characteristics of a machine tool fixture component cannot truly reflect the quality distribution condition of the machine tool fixture component, which can influence calculation accuracy and trimming precision and make automation hard to realize, and therefore, the invention provides the method to solve the problems in the prior art. The method of the invention includes the following steps that: 1, surface tolerance is represented by a homogeneous matrix; 2, joint surface error is represented by a homogeneous matrix; 3, a geometric error transfer model of assembly is constructed; 4, the surface tolerance and joint surface error are optimized according to the nature of error terms; 5, sensitivity is analyzed; 6, a part surface error or surface tolerance parameter optimization method is established with the processing cost of the fixture component adopted as an objective and assembly precision reliability and tolerance selection principles adopted as constraints; and 7, the distribution rule and parameter of theimbalance of a fixture component assembly body are obtained through a simulation experiment after the optimization result of the spinor parameter of the assembly body is obtained, and therefore, the dynamic balance optimization design of the assembly body is realized.

Description

technical field [0001] The invention belongs to the technical field of active error compensation for precision numerical control equipment, and in particular relates to a joint surface error and joint surface tolerance optimization method of a machine tool fixture assembly. Background technique [0002] With the continuous development of the technical level, many low-power, low-speed rotary processing machinery and equipment are slowly developing in the direction of high-power, high-speed, and precision. Whether the product manufacturer can create huge material wealth and create huge social benefits for human beings is directly related to the efficient, safe and long-term stable operation of rotary processing machinery. The core problem of dynamic balance is that the inertial spindle of the rotating parts / parts and the rotary axis of the workpiece itself are not on the same straight line. This phenomenon is called mechanical dynamic unbalance. [0003] The clamp assembly in...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the shortcomings of the prior art, the present invention proposes a joint surface error and joint surface tolerance optimization method of the machine tool fixture assembly to overcome the existing quality characteristics of the prior art that cannot truly reflect the mass distribution of the lathe fixture assembly and affect the calculation. Accuracy and trim accuracy, problems that are difficult to automate

Images