Indexing cam driving device capable of intelligently adjusting speed

Abstract

The invention discloses an indexing cam driving device capable of intelligently adjusting the speed, achieving the aim of reducing the residual vibration response of an indexing disc by reducing the rotating speed of a cam shaft when an actuating mechanism acts. The indexing cam driving device comprises a base; an intelligent speed-adjusting controller is arranged at one end of the base and an indexing cam case is arranged at the other end of the base; the indexing cam case is respectively connected with an alternating current motor through a coupling I and connected with a photoelectric rotary encoder through a coupling II; and the intelligent speed-adjusting controller is respectively connected with the alternating current motor and the photoelectric rotary encoder through cables.

Description

technical field [0001] The invention relates to an indexing cam transmission device capable of intelligent speed regulation. Background technique [0002] The indexing cam transmission mechanism is an intermittent mechanism, mainly composed of a cam and an indexing plate with rollers, including three types: parallel indexing cam mechanism, cylindrical indexing cam mechanism and arc surface indexing cam mechanism. Usually the cam is driven by an ordinary three-phase AC motor to rotate continuously at a constant speed, and the driven index plate performs periodic intermittent motion according to a preset motion law. When the law of motion is determined, the kinematics and dynamics performance of the follower is also determined. The traditional method to improve the motion state of the follower is to change the motion law curve of the follower, but if the movement requirements of the follower change slightly, the cam profile must be redesigned; at the same time, manufacturing ...

AI Technical Summary

Problems solved by technology

The traditional method to improve the motion state of the follower is to change the motion law curve of the follower, but if the movement requirements of the follower change slightly, the cam profile must be redesigned; at the same time, manufacturing and assembly errors, wear, thermal deformation and The existence of unpredictable factors such as the mechanical characteristics of the motor may cause the actual working conditions to deviate from the design working conditions, so that the actual output motion of the follower is inconsistent with the expected design motion law, and cause severe shock and vibration, seriously affecting the mechanism. Transmission accuracy, working stability and service life

The actuator generally completes the predetermined technological action during the intermittent period of the cam mechanism, but according to the dynamic analysis of the indexing cam mechanism, the index plate is always accompanied by residual vibration during the intermittent period, even if the amplitude is attenuated, it will reduce the execution The action accuracy of the mechanism increases the reject rate of the product

Moreover, the rotational speed of the input shaft of the indexing cam depends on the rotational speed of the AC motor used. If one wants to change the input rotational speed, the motor must be replaced, which greatly limits the scope of use of the indexing cam transmission.

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