A Design Method of Static Stiffness Matching for Machine Tool Forward Design

Abstract

A design method of static stiffness matching design for the machine tool forward design: define the static stiffness of each component of the machine tool at different points; establish the static deformation model of the whole machine; analyze the force of each component of the machine tool to obtain the force of the component conditions, analyze the normal force and tangential force on the bed, column and slide plate; establish the functional relationship between the deformation of each part of the machine tool and the static stiffness of each part of the machine tool; establish the static stiffness model of the whole machine; Static stiffness model for static stiffness matching design. In the conceptual design stage of the machine tool, the present invention aims at the static stiffness of the whole machine given by the user, and carries out the static stiffness design of the machine tool "from top to bottom". The design obtains reasonable static stiffness of each component. The static stiffness of the machine tool can be estimated and controlled at the beginning of the design, which improves the efficiency and accuracy of the design, improves the machining accuracy of the machine tool, and can also predict the performance of the product and reduce the manufacturing cost.

Description

technical field [0001] The invention relates to a static stiffness matching design method of a complete machine. In particular, it relates to a machine tool static stiffness matching design method for forward design. Background technique [0002] Static stiffness is one of the important indicators of machine tool design. Improving the static stiffness of the machine tool is conducive to improving the efficiency, machining accuracy and surface processing quality of the machine tool. In the previous machine tool design, the static stiffness was usually calculated by finite element software after the machine tool structure design was completed. The designed machine tool structure often cannot meet the user's requirements for the static stiffness of the whole machine, resulting in repeated revisions and calculations by designers during the design process, wasting a lot of time and manpower. In addition, designers cannot control the static stiffness of the whole machine at the ...

AI Technical Summary

Problems solved by technology

The designed machine tool structure often cannot meet the user's requirements for the static stiffness of the whole machine, resulting in repeated revisions and calculations by the designer during the design process, wasting a lot of time and manpower

In addition, designers cannot control the static stiffness of the whole machine at the beginning of the design, and there is no effective estimation method for it