Numerical controller

Abstract

Abstract PURPOSE:To perform high-accuracy control by setting 1st and 2nd control ranges corresponding to respective operation modes of an controlled system, controlling a driving means according to a detected control value, and then generating a warning and stopping the controlled system. CONSTITUTION:A numerical controller (NC) 10 consists of a CPU 11 composed of a microcomputer, a memory 12, a driving amplifier 13, a current detector 15 for the DC servomotor 21 of a machine tool 20, a feedback circuit 14, a CRT control circuit 16, and a CRT 17. This CPU 11 calculates the 1st control speed range (control range) where a command speed S should be corrected and the 2nd control range where the machine tool 20 should be stopped. Then when the driving amplifier 13 drives the machine tool 20 according to a command control value, the NC device 10 performs control so as to put its detected control value coincident in the 1st control range when the detected control value deviates from the 1st control range, and generates a warning and stops the machine tool when the detected control value deviates from the 2nd control range.

Inventors

• 👤 Yukio Tomizawa
• 👤 富沢　幸雄
• 👤 Yasuhiro Yuasa
• 👤 湯浅　泰博

Bibliographic Details