Cycles of the Operating Members

Cycles of the Operating Members

Cycles of the Operating Members - In their general nature, the cycles of the main and most of the auxiliary working members are closed, repeating cycles of rectilinear reciprocating motions much less frequently rocking motions).

The particular cycles of the main working members may be either simple or complex. Simple linear cycles are accomplished along a straight line. They consist of rapid approach (denoted by -->) working feed (-- -- --- --->), dwell (0) and rapid withdrawal (<---).

Simple Cycle	Cycle with Two Different Working Feeds
Form Turning With a Dwell for Cleaning Up	Reciprocal Milling Cycle
Repeated Elements of the Cycle	Intermittent Feed Cycle

In some cases certain of these elements are absent and in others they are repeated (Fig.). In complex cycles, the main working member travels in mutually perpendicular directions.Most of the auxiliary working members execute closed cycles of reciprocating motion.

Certain auxiliary working members may have a rotary and, in most cases, indexing cycle of motions for changing the stations or positions of the workpieces (spindle carriers of multiple spindle automatics, spindle carriers of vertical multiple spindle semiautomatics and work tables of multiple station unit built machines) or of the tools (turrets of turret lathes, indexing attachments for drilling and tapping in single spindle automatic screw machines, etc.).