Two ways of laser cutting machine transmission

Rack and pinion

Rack and pinion are also divided into spur rack and helical rack, which are paired with spur gears and helical gears; the tooth profile of the rack is straight instead The involute (for the tooth surface is flat) is equivalent to an infinite cylindrical gear with an index circle radius.

Working principle:

Pinions and racks are mechanical parts with teeth that can mesh with each other. Rack and pinion are divided into straight teeth and helical teeth. Rack and pinion are widely used in mechanical equipment to realize transfer movement, change movement speed and change movement direction.

Advantages of the rack:

♦ The rack can be extended indefinitely and adapt to long-distance movement;

♦ The rack The load-bearing capacity is stronger than that of the ball screw, and it can work under high load and heavy load;

♦ The rack and pinion are easier to manufacture and the installation is relatively simple.

Ball screw

is an ideal product that converts rotary motion into linear motion, or converts linear motion into rotary motion. The ball screw is composed of a screw, a nut and a ball, and its function is to convert rotary motion into linear motion.

Working principle

The development of ball screw technology has changed the bearing from rolling action to sliding action. Due to the small frictional resistance, the ball screw It is widely used in various industrial equipment and precision instruments.

Advantages of ball screw:

♦ High transmission efficiency;

♦ Transmission is sensitive and stable;

♦ High positioning accuracy;

♦ Good accuracy retention;

♦ High transmission rigidity;

♦ Good synchronization performance.

Summary: The rack and pinion transmission can be faster and the transmission distance can be longer; the accuracy and repeatability of the ball screw is slightly better, but the speed is slow and the length is limited.