作者: Kilwin T , Woltjen D , Dillard D
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摘要: In an indexing apparatus, a motor operates mechanical drive which imparts mechanically accelerated and decelerated turning to table that is rotatably mounted upon stationary base, series of switches responsive various predetermined positions the effect change in speed its turning, addition effected by drive, or momentarily initiate halt rotation as when approaches precise location work station. One set function conjunction with degrees turn through sector generally defined distance just short space between stations, first actuated, it instructs reduce input velocity index then moves at reduced into position where actuates second switch, may be described sensitive switch detects suitable reference during this slow motion, deenergizes dynamically brakes thereby allowing coast accurate positioning. Another braking device initiated after has coasted stop fix stably machining operation. After momentary delay, timing once again deactivates other device, provides for reenergization initiating rapid toward another station repeat foregoing cycle. The concept apparatus used rotary tables, also employed any related type such inline transfer machines, like.