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How to determine program-zero assignment during touch-offs.
Custom macro B users tend to struggle with the concept that variables can be vacant. To fully master custom macro B, you must understand the concept of vacancy and its implications.
What is an acceptable percentage of spindle run time for metalcutting CNC machines such as mills and lathes?
Regardless of how tool changes are actually made, it is imperative that the cutting tool currently in the spindle matches the program segment that uses the tool.
Constant surface speed (specified by G96 on most machines) is a turning center feature that automatically determines the appropriate spindle speed in revolutions per minute (rpm). This article details the advantages and disadvantages of using this feature.
In most applications, offsets are so dynamic (often changed) that that you wouldn’t even consider keeping a backup copy. But consider a more complicated machining center qualified setup. A backup copy may prove to be beneficial.
With custom macro B, there are two logic words that can be used for creating loops—the two types of loops are called IF and WHILE statement loops. So which one should you use for your applications?
Counterboring is a machining operation that will enlarge an existing hole’s diameter to a specified depth. Traditionally, counterboring is done with either a special counterboring tool that has a pilot, or it is done with an end mill. In either case, the diameter of the tool (end mill or counterbore) must match the diameter that is counterbored.
As you probably know, parameters control many functions of a CNC. Just about every CNC function has at least one related parameter setting—everything from setting initialized states at power-up to determining the specific procedure required for powering down is controlled by parameter settings.
Multiple machine operation has been the subject of several recent Tech Talk columns (January through May of 2008). I have received many comments, and I want to thank everyone who responded. The series states that successful applications for having one operator run multiple machines do not just happen—a successf