– When rough machining or semi finishing machining, the blank allowance is large, so the appropriate cycle processing method should be adopted. Under the premise of ensuring safety and meeting the tool change needs, the tool starting point should be as close to the workpiece as possible to reduce the idle tool travel, shorten the feed path, and save the execution time in the machining process.

For example, in the cycle processing, according to the actual processing situation of the workpiece, separate the tool starting point and tool setting point. The feed path is the motion track of the cutting tool in the whole machining process, that is the path the tool pass through starts feeding from the setting point to returns to the point when the machining program is ended.ġ) Try to shorten the tool path, reduce the empty travel and improve the production efficiency This part of operation can be written into subroutines, stored in memory in advance, and called at any time according to the need, so that the programming becomes simple and fast. In the actual CNC turning operation, a certain fixed processing operation often occurs repeatedly. As long as it is flexibly and comprehensively used, the programming debugging time can be shortened when processing small batch parts, so as to improve the programming efficiency and production efficiency. Therefore, it is necessary to understand the fixed cycle programming instructions of the machine tool when operating the CNC machine tool. As long as the starting point and end point of the contour are given, the parts can be guaranteed to achieve the part drawing requirements and process requirements, more importantly, programming is fast and convenient. – In Siemens system, there are standard machining cycles LCYC82、LCYC83、LCYC840、LCYC85、LCYC93、LCYC94、LCYC95、LCYC97, etc., among them, grooving cycle LCYC93, thread cutting LCYC97 and blank cutting cycle LCYC95 play a decisive role in high efficiency programming, especially LCYC95 and LCYC93. We should carefully analyze and reasonably select in order to process high precision parts. – In FANUCO―TD CNC system, the CNC lathe has more than 10 kinds of cycle programs, such as G70 and G71, each instruction has its own characteristics, the machining accuracy of the workpiece after processing and their programming methods are different. Reasonable and efficient use of the inherent cycle programġ) Make full use of the CNC cycle program

Okuma lathe programming examples