In today’s fast paced world the expectation of quality is an assumption, at best, based on computer technology alone. The ability of a machine tool to perform at its optimum is largely based on the geometric and positioning integrity of the machine axes.  Each machine tools capability is grossly impacted by these factors.


Another factor in part quality is the human element. The days of the well- trained, experienced machinist are fading fast. The new technology is supposed to replace that experienced individual. The most effective way to ensure that happens is to know the capability of your machine. The machine control assumes that each axis is orthogonal  to the other axes. Also the control assumes that the tool tip is where it was programmed to be. The only way to ensure that this is the case is to have your CNC machines measured and calibrated on a routine schedule. This will ensure consistent quality performance from your CNC machine.

The machine tool itself accounts for 50% of all part quality problems. This figure was derived from a study conducted by the National Center of Manufacturing Sciences. This study included data from many major manufacturing companies in the United States.  The remaining factors that affect part quality are programming errors, measurement errors (gauging, cmm, etc.) and process problems.  

As you can see this study alone clearly supports the need for machine tool calibration.



Be not slothful in business, but fervent in Spirit, as serving the Lord…

 

The Need for Calibration

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