CUTTER MODIFICATION METHOD  FOR ENHANCING THE ACCURACY OF MILLING SCREW ROTOR

Minh-Thuan Hoang; Tien-Phong Nguyen; Van-Phong Nguyen

Minh-Thuan Hoang Hung Yen University of Technology and Education
Tien-Phong Nguyen Hung Yen University of Technology and Education
Van-Phong Nguyen Hung Yen University of Technology and Education

Keywords: Screw rotor, Side-cutter, compensation method, rotor profile error

Abstract

The cutter profile is usually generated from the theoretical rotor profile. However, the rotor profile machining does not meet the theoretical profile because of comprehensive errors of machine tools such as temperature, humidity, adjacent vibration… Therefore, the cutter modification method is proposed to enhance the manufacturing rotor of the screw machine by compensating the rotor profile errors in the cutter profile. The mathematical model for designing the cutter profile is proposed based on the theoretical rotor profile. The rotor profile modification is generated to compensate for the machining error in the rotor profile design. The cutter correction is generated based on the rotor profile compensation. In the example, the normal deviation of the rotor profile is significantly reduced after using the modified cutter.

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