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US 7,926,395 B2Granted
Sawing machine, cutting-off method, and method of reducing noise
AssigneeAmada Company, Limited
InventorsToru Tokiwa, Kinshiro Naito
Life of this patent
Estimating the term…
Abstract
A band saw machine includes a driving wheel and a driven wheel around which an endless band saw blade is wound. At least one of the driving wheel and the driven wheel is directly connected to an output shaft of a control motor. The output shaft of the control motor is arranged in a cylindrical bearing unit installed on a motor base supporting the control motor. The driving wheel is rotatably supported by the bearing unit.
Claims4
A sawing machine comprising:
- a driving wheel;
- a driven wheel around which an endless band saw blade is wound, at least one of the driving wheel and the driven wheel being directly connected to an output shaft of a control motor;
- a rotation speed controller that controls a rotation speed of the control motor;
- a motor driver that drives the control motor under the control of the rotation speed controller;
- a pulse generator that outputs a pulse to the motor driver in order to oscillate the rotation speed of the rotating control motor under the control of the rotation speed controller;
- and
- a cutting speed controller that controls a cutting speed of the band saw blade with respect to a workpiece, wherein
- the cutting speed controller controls the cutting speed of the band saw blade to be instantaneously accelerated, at the time of a fall of the pulse output from the pulse generator.
5 more elements
Dependencies are inferred from the claim text.