Open AccessModeling of Precision Machining for Crankshaft Follow-up Grinder
Author(s) -
Changjun Wu,
Jinwei Fan,
Yiling Zhang,
Yuanyuan Zhao
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/612/3/032119
Subject(s) - crankshaft , grinding , machining , pulverizer , kinematics , machine tool , camshaft , grinding wheel , mechanical engineering , coordinate system , trajectory , position (finance) , transformation matrix , computer science , engineering , physics , artificial intelligence , classical mechanics , finance , astronomy , economics
In this paper, follow-up grinding of crankshaft is studied and the mathematical model of follow-up grinding motion is established. Taking the double grinding wheel crankshaft follow-up grinder as the research object, the motion errors of the machine tool are obtained by analyzing the motion relations among the moving bodies. Based on the kinematics theory of multi-body system, the kinematics model of the whole machine tool is established. The position matrix of any cutting point is described according to the kinematic chain of “bed-workpiece” and “bed-tool”, and the precise machining model of double grinding wheel follow-up grinding machine tool is established by using the coincidence principle of tool actual trajectory and tool path. The coordinate system of each moving body is established, the transformation matrix between moving bodies is obtained, and the precision machining model of double grinding wheel follow-up crankshaft CNC grinding machine is solved, which lays a foundation for error compensation of the machine.