Stepping motor transmission gear positioning press-fitting device and press-fitting method

Abstract

The invention discloses a stepping motor transmission gear positioning and press-fitting device which comprises a bottom plate, a gear mounting seat is arranged on the bottom plate, and a gear is mounted on the gear mounting seat; the upper plate is provided with a pressing needle assembly, and the pressing needle assembly is located over the gear mounting base; the motor mounting plate is located between the bottom plate and the upper plate, a motor is placed on the motor mounting plate, one end of a motor shaft on the motor points to the pressing needle assembly, the other end of the motor shaft points to the gear mounting seat, the gear mounting seat is provided with a guide part, and the guide part can be in guide fit with the other end of the motor shaft before press fitting; and the pressing needle assembly moves downwards to push the motor to be close to the gear, so that the gear is pressed on the motor shaft. In the whole press-fitting process, the pressing needle assembly, the motor shaft of the motor and the gear are always kept on the same axis, and the press-fitting effect is improved.

Description

technical field [0001] The invention belongs to the technical field of motors, and in particular relates to a positioning and pressing device and a pressing method for a transmission gear of a stepping motor. Background technique [0002] Adding gears or gearboxes to stepper motors is an important market application of stepper motors, mainly used for mechanical transmission, acceleration and deceleration, changing the transmission direction, changing the transmission torque, power distribution, etc. Whether it is adding a gear or a gearbox, the transmission gear needs to be press-fitted. The press-fitted transmission gear needs to be concentric with the motor shaft and can be positioned to ensure that the gear is pressed in place and the motor is not easy to damage; the existing transmission gear press-fit The device is to place the motor to be pressed directly on the press-fit base, and use the limit pressure head to directly press the transmission gear onto the motor shaft...

AI Technical Summary

Problems solved by technology

Whether it is adding a gear or a gearbox, the transmission gear needs to be press-fitted. The press-fitted transmission gear needs to be concentric with the motor shaft and can be positioned to ensure that the gear is pressed in place and the motor is not easy to damage; the existing transmission gear press-fit The device is to place the motor to be pressed directly on the press-fit base, and use the limit pressure head to directly press the transmission gear onto the motor shaft. The existing shortcomings of the transmission gear press-fit device: (1) Limit pressure The three parts of the head, the transmission gear and the motor to be pressed cannot be guaranteed to be vertically concentric, so that the transmission gear cannot be vertically concentric with the motor drive shaft in real time during the press-fit process, and the force of the press-fit is not vertical, which may easily cause the motor shaft to bend; (2) There is no mechanical positioning and pressure control. When the pressure is too high, it is easy to cause damage to the motor and obvious cracking or hidden cracking of the gears.

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