Hand tools are one of the classifications of the hardware industry. They are relative to power tools. It is mainly used to twist, measure or apply force to the Tool by hand. There are many types of hand tools, including measure tapes, cutting types, tool sets, and auxiliary types such as caulking guns. Each type has a different model.
1. The planetary friction type mechanical continuously variable transmission mainly consists of electric motor, friction transmission mechanism, pressing device and speed control mechanism.
The working process of the friction transmission mechanism:
A set of tapered planetary friction wheels, sandwiched between the fixed ring and the speed control cam, sandwiched between the driving wheel and the pressure plate, and constitute a friction pair; when the driving wheel is driven by the motor, the friction wheel is pure Rolling. Since the fixed ring and the speed regulating cam do not move, the friction wheel rotates while rotating; the rotation of the carrier is driven by the shaft of the friction wheel and the slider bearing, and the pressing device is composed of a set of disc springs, which Apply axial direction to the platen and drive wheel.
Speed ​​control mechanism working process:
Turning the handwheel drives the speed control cam to change the angular position, and by moving the cam curve surface, the speed control cam generates axial movement, thereby changing the interval between the speed control cam and the fixed ring, and the friction wheel makes radial movement, and finally Uniformly changed the working radius of the planetary wheel and the driving wheel, the pressure plate and the fixed ring, and the speed of the cam of the speed control cam, achieving stable and stepless speed change.
hand tools,caulking gun,cable tie,measure tape
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