From CNC Programming Handbook: A Comprehensive Guide to Practical CNC Programming, Third Edition

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.

TOOL FUNCTION - TURNING

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 all 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 the case in milling. No M06 function exists on a standard CNC lathe.

T-Address

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. Format for turning system is T4, or...

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Lathes and Turning Centers
Lathes and turning centers cut a rotating part with a stationary cutting tool. The tool moves parallel and perpendicular to the workpiece axis to provide the desired finished shape.
Turning Tools
Turning tools are used on lathes for cutting or finishing the outside diameter of a workpiece.
Tool Blanks
Tool blanks are ungrounded rods or inserts for subsequent grinding, geometry, and edge design and fabrication.
CNC Machining Services
CNC machining services use fast, repeatable, and programmable machines which can function while unattended in order to manufacture parts quickly and efficiently.
Machine Shop Services
Machine shop services use machinery or equipment to perform custom removal of material to fabricate a finished part.

Topics of Interest

In the last chapter, several lathe procedures described programming of a turning and boring tool path. A number of different techniques have been introduced, mainly describing the finishing tool path.

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...

CNC MACHINES - TURNING Conventional engine lathe or a turret lathe is a common machine in just about every machine shop. A lathe is used for machining cylindrical or conical work, such as shafts,...

CNC MACHINES - TURNING A conventional engine lathe or a turret lathe is a common machine in just about every machine shop. A lathe is used for machining cylindrical or conical work, such as shafts,...

Cutter Radius Offset Cutter radius offset is also known as the tool nose radius offset on CNC lathes. Its purpose and overall functionality is the same as for milling applications and has been...