1. A sawing machine comprising a driving wheel and a driven wheel around which an endless band saw blade is wound, wherein at least one of the driving wheel and the driven wheel is directly connected to an output shaft of a control motor.
2. The sawing machine according to claim 1, wherein the output shaft of the control motor is arranged in a cylindrical bearing unit installed on a motor base supporting the control motor, and
the driving wheel is rotatably supported by the bearing unit.
3. The sawing machine according to claim 1, further comprising:
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; and
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.
4. The sawing machine according to claim 3, wherein a frequency of the pulse outputted by the pulse generator is as low as several Hz to several hundred Hz.
5. The sawing machine according to claim 3, further comprising:
a cutting position detector that detects a cutting position of the band saw blade with respect to a workpiece to be cut;
a cutting length calculator that calculates a cutting length based on the cutting position detected by the cutting position detector, and a shape and a size of the workpiece; and
a saw speed calculator that calculates a saw speed corresponding to the cutting length calculated by the cutting length calculator and outputs a rotation speed instruction to the rotation speed controller.
6. The sawing machine according to claim 3, further comprising:
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.
7. A sawing machine, comprising:
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 being 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.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A pharmaceutical composition which contains:
(a) quinapril;
(b) a suitable amount of a stablizer to retard cyclization and discoloration of quinapril, the stablizer consisting essentially of magnesium oxide; and
(c) a suitable amount of a hydrolysis-minimizing agent to inhibit hydrolysis.
2. A pharmaceutical composition which contains:
(a) quinapril;
(b) a suitable amount of a stablizer to retard cyclization and discoloration, the stablizer consisting essentially of magnesium oxide; and
(c) a suitable amount of a saccharide to inhibit hydrolysis.