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Representation method of cam divider accuracy unit-cam indexing drives

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Update time : 2019-07-01 20:12:51
How is the accuracy of the cam indexer expressed? It is usually expressed in angular seconds and is also expressed in millimeters. The so-called angle second is an accuracy unit. We are used to using the symbol "〃". In actual production applications, the second is the accuracy index that the cam divider can achieve. In a circle, its rounded corner is 360 degrees. If you convert this degree into seconds, then 1 degree is 3600 seconds, so the unit of 1 second is very small. From this point of view, the accuracy of the indexer is The smaller the number of seconds, the higher its accuracy.
 cam indexing drives
In the cam indexer, the ordinary indexer, we call the low-end indexer, its accuracy can reach ± ​​30 seconds, the imported indexer can reach 10 to 20 seconds, the higher the precision of the cam Indexer, the higher the requirements for processing equipment, the ordinary processing equipment can not achieve the 360-degree processing needs, the processing method adopted is the way of workpiece movement, while the advanced horizontal machining center, otherwise, it takes The way of processing the tool movement can realize the processing method of any angle, especially for the processing of the cam surface, in the actual application, it is the key element of whether the splitting motion is smooth.
In short, the angle second is the unit of the precision of the reaction cam divider. In the indexer, the so-called precision includes two aspects of precision, one is the accuracy of the indexer of the cam during motion, and it refers to the cam split. The input shaft of the device rotates one revolution, the accuracy of the output shaft moves one station, and the other is the repeated positioning accuracy of each cycle. The repeated positioning accuracy refers to the return of the output shaft after one rotation, and then return to the origin when the cycle is performed. Accuracy, the requirement of this precision is relatively high. For example, in the disc type multi-station machining, the requirements for repeated positioning accuracy are more demanding, and it is impossible to return to the origin, or a large deviation will affect the processing quality of the workpiece.