The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 24, 1991
Filed:
Feb. 16, 1989
Masao Kume, Sayama, JP;
Takeshi Masaki, Sayama, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A synchronous operation control system for a numerically controlled machine such as a gear grinding machine or a hobbing machine includes a first motor for rotating a master shaft supporting a tool, a second motor for rotating a slave shaft, and a workpiece shaft operatively coupled to the slave shaft for supporting a workpiece which is to be machined by the tool. First and second encoders are coupled respectively to the master and slave shafts. Processors are provided for differentiating output signals from the first and second encoders with respect to time and thereafter calculating at least positional errors between the master, slave, and workpiece shafts. In addition, an adder is provided for adding output signals from the processors and applying an output signal to the second motor.