Worm gear mother machine precision active design distribution method considering total error information factor

Abstract

The invention discloses a worm gear mother machine precision active design distribution method considering total error information factors, comprising the following steps: 1) determining a worm gear mother machine motion error item and an assembly error item, and establishing a worm gear mother machine comprehensive error model; 2) taking minimization of manufacturing cost as an optimization target, considering worm gear mother machine total error information factors such as position errors and attitude errors of an X axis, a Y axis, a Z axis, an A axis, a C axis and an M axis in x, y and z directions, respectively establishing a linear pair cost function, a rotation pair cost function and an assembly cost function of the worm gear mother machine, and obtaining a comprehensive cost function of the worm gear mother machine; 3) establishing a precision distribution optimization model by taking the precision reliability of the worm gear machine as a constraint condition; and 4) carrying out optimization solution on the precision distribution optimization model to obtain the distribution precision of each motion error item and assembly error item of the worm gear mother machine. According to the worm gear mother machine precision active design distribution method, the worm gear mother machine precision distribution optimization model is established, so that a more economical and reasonable active design precision distribution scheme is obtained.

Description

technical field [0001] The invention relates to the technical field of precision design of mechanical equipment, in particular to an active design and allocation method for the precision of a worm gear machine considering full error information factors. Background technique [0002] Accuracy allocation is an important part of machine tool design. At present, most of the researches take the overall accuracy fully meeting the design requirements as the optimization constraint condition. This condition is too strict, and the obtained optimization results are not the most economical and reasonable. The machine tool components of worm gear machine tools are large in size and complex in structure, and the cost of component processing and assembly is high. The quality of the precision distribution scheme has a great impact on the manufacturing cost of the machine tool. Therefore, it is necessary to study and establish an optimization model for the accuracy allocation of worm gear b...

AI Technical Summary

Problems solved by technology

Worm gear machine tool parts are large in size and complex in structure, and the cost of parts processing and assembly is high. The quality of the precision distribution scheme has a great impact on the manufacturing cost of the machine tool

Images