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Mike Lynch Founder and President
One Program For Left And Right Hand Workpieces
The most basic application for mirror image is when machining left and right hand workpieces. Say you want to set up and run 500 of one hand, tear down, and then set up and run 500 of the opposite hand.
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Sizing With Tool Nose Radius Compensation
Most turning center users use wear offsets for the purpose of holding size over the course of a production run. And with most of the tools used on turning centers (turning tools, boring bars, grooving tools, among others), all production run sizing should be done with wear offsets.
Read MoreProgramming To The Machine's Reference Position
Almost all current model CNC machine tools have a special reference position. For machines having Fanuc or Fanuc-compatible controls, this special position is called the zero return position.
Read MoreAre You Dwelling To Overcome Machine Problems?
The dwell command (G04 for most controls) will cause axis motion to pause for a specified period. The period is commonly specified in seconds.
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Shifting Program Zero On Machining Centers
It is common to machine several identical workpiece attributes from within a single program. Consider the four identical circular counter-bored holes that must be milled in the workpiece shown in Figure 1.
Read MoreInventing Wear Offset Compensation
You know that machining centers have tool length compensation, cutter radius compensation and fixture offsets. Turning centers have geometry offsets, wear offsets and tool nose radius compensation.
Read MoreWhat's New On The Internet?
In my CNC courses, I always ask how many people have access to the Internet. It used to be (as recently as last year) that only a small percentage of hands would go up.
Read MoreA Flexible Turret Index Position
The cutting tools in your turning centers change on a regular basis. To minimize tool change time during setups, many setup people will simply load the tools required for the new job and leave tools in the turret from the last job as long as they don't interfere with the new job.
Read MoreCombining Absolute And Incremental Motions
While we agree that the absolute mode should be your positioning mode of choice for most applications, there are times when incremental mode can be quite helpful. Repeating motions within a subprogram, for example, is one excellent example.
Read MoreRestarting A Program After Breaking A Tap
It's common to have to rerun tools. If you find a problem during the program verification with the eighth tool, for instance, you'll want to restart the program from the beginning of tool number eight rather than having to rerun the entire program just to get back to that point.
Read MoreMinimizing Offset Changes From Job To Job
Some companies store all cutting tools they ever use in the CNC machine's magazine or turret. Others have a number of tools that they keep in the machine on a permanent basis.
Read MoreA Realistic Definition Of Cycle Time
Many people determine cycle time by measuring cycle start to cycle start time. As the operator presses the cycle start button, he or she starts the stopwatch.
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