TABLE OF CONTENTS There is so much information that can be covered in this section, that a whole book could be written just on the subject of turning and boring. Selected subjects are presented in this chapter, others are covered in chapters dealing with lathe cycles, grooving, part-off, single point threading, etc.
In terms of distinction, turning are boring are practically identical operations, except for the area of metal removal where the actual machining takes place. Often, terms external turning and internal turning are also used, meaning the same as turning and boring respectively. From programming perspective, the rules are virtually the same, and any significant differences will be covered as necessary.
CNC lathes require programming the selected tool by its tool number, using the T address. In comparison with a CNC machining center, the tool function for lathes is more extensive and calls for additional details. One major difference between milling and turning controls is the fact that the T address for CNC lathes will make the actual tool change. This is not a case in milling. No M06 function exists on a standard CNC lathe.
One difference from machining centers is that a tool defined as T01 in the program must be mounted in the turret station #1, tool defined as T12 must be mounted in turret station #12, etc. Another difference between milling and turning tools is in the format of the T address. The format for turning...
