A Cam Type Direct Shaft Vibrator Directly Driven by AC Servo Motor

Abstract

The invention relates to an alternating current servo motor straight-driven type end cam straight shaft vibration exciter. The end cam straight shaft vibration exciter is characterized in that a servo motor drives an output shaft of a speed reducer to rotate, a rotary cylinder is further driven to rotate according to the working rotation direction, then a cam disc is driven to rotate, and an end cam pair is arranged between the cam disc and a driven finger column, so a driven slide rod is driven to do reciprocating movement under the action of the end gear pair and a reset spring, and a vibrated part is driven to vibrate. The vibration exciter has the advantages that the output frequency range is wide, and the accuracy is high; the reaction force applied to the rotation part is along the axial direction, the stress state is better, the defect of adverse stress on an eccentric block type vibration exciter due to bending torque is overcome, and the service life of a vibration exciter part is prolonged; the end cam pair can be designed with a plurality of cycles, so when the servo motor rotates with one circle, the vibration excitation force is changed in a plurality of cycles, and the outputted maximum frequency can be doubled; when the larger vibration excitation force is outputted, the mass of the part does not need to be greatly increased, only the output power of the servo motor and the speed reducer needs to be increased, and the strength of other parts is calibrated.

Description

technical field [0001] The invention belongs to the technical field of vibration equipment, and in particular relates to an end-face cam type direct-axis vibrator directly driven by an AC servo motor. Background technique [0002] Vibration equipment is a kind of equipment that makes the vibrated part produce forced vibration through a special mechanical transmission mode, and it has a wide range of applications in many fields. At present, the production technology of advanced vibration equipment is monopolized by foreign enterprises. Chinese enterprises are restrained by foreign countries in the application of vibration technology and cannot obtain advanced vibration equipment. Therefore, in recent years, some researchers have begun to develop high-precision vibration equipment to meet domestic The demand for vibration equipment in some fields. [0003] The demand of domestic enterprises for vibration equipment is embodied in several aspects such as research, simulation, p...

AI Technical Summary

Problems solved by technology

This kind of vibrating equipment mainly has the following disadvantages in actual use: 1. The reaction force generated by the eccentric block acts in the radial direction of the main shaft, causing the main shaft to produce a bad stress state of bending and torsion, which has an adverse effect on the bearing; 2. The eccentric block Generally, only one-way eccentricity can be achieved, so the exciting force can only change for one cycle when the main shaft rotates once. In this way, the vibration frequency range of the vibration equipment is restricted by the motor speed and cannot be changed in a wide range; 3. To achieve When the excitation force is large, a large eccentric mass is required, which makes the vibration system have a large inertia, and the vibration frequency cannot be changed quickly, and the servo performance is poor.

Images