Method for compensating for temperature-related dimensional deviations in machine geometry

US6539274B1 · kind B1 · utility

Assignee

• DR. JOHANNES HEIDENHAIN GMBH · DE

Inventors

• Michael Rauth · Traunreut, DE
• Johann Zacek · Evenhausen, DE

Key dates

• Filing date: Oct 22, 1999
• Grant date: Mar 25, 2003
• Expiry date: Oct 22, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T409/309744
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A method for reducing computational expenditure required to compensate for temperature-related dimensional deviations in a machine tool is described. Temperature-related dimensional deviations are compensated for before the user input information existing in the workpiece-specific coordinate system is converted into the machine-specific coordinate system. As a result, the requisite coordinate transformation carried out with the aid of a mapping matrix does not have to be performed twice, once for user input information and again for compensation values. In addition, the compensation values for the temperature-dependent expansion are only calculated when a minimum value for the temperature variation is exceeded.