A brief discussion on the stability in the work of the divider

Reading： Published Time：2011-5-6 17:44:07 Category：Company news

The parallel cam divider has a uniformly distributed needle bearing on the output shaft through the conjugate cam on the input shaft, and the index plate is vertically meshed without gaps. The straight section of the cam profile makes the index plate stationary and self-locking. The curved section drives the needle roller bearings on the index plate to drive the index plate to index.

　　The rotation process of the cam splitter is halo stable, which is related to the division accuracy of the index plate, the processing accuracy of the cam curve and the roughness of the cam curve surface after grinding. Because there is no gap between the cam and the index plate. If the needle roller bearings on the index plate are not evenly indexed, some pressure may be generated between the needle roller bearings and the cam curve surface, and some gaps may occur. During the rotation of the splitter, jitter will occur under the action of the moment of inertia. When the roughness of the cam curve surface is large, the needle roller bearings will vibrate when rolling on the cam curve surface, which is also transmitted to the output shaft and the working disk assembled with it, which will affect the work piece of the machine during the production process. Product pass rate.

The drive angle generally refers to the stroke angle, that is, the curved segment of the cam in the cam indexer; the corresponding is the angle of repose, that is, the straight segment of the cam in the cam indexer, the drive angle + angle of rest = 360°, can be The ratio of the time of position rotation and rest is calculated. The time ratio of motion and rest is 1:2, that is, the stroke angle is 120° and the rest angle is 240°.

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