Interesting Technical Facts Pertaining Precision Machining

The term Precision Machining is habitually bring into play freely to describe the making of parts to tolerances less than 0.013 mm and on surface finishes better than 32T on three dimensional parts. With tolerances of less than 0.005 mm one will refer to ultra high machining.

There are seven disciplines that are key to Precision Machining. It involves motion control, spindle technology, machine geometry and construction, thermal growth and environmental control, tooling selection and application, machining strategy, and real time performance monitoring and rectification.

The collective consequence of mistakes in any of these seven principals should not surpass 0.0005 percent of the total volume of the object or piece.

The basis of machining is formed on the principals of machine geometry and construction while damping, geometric precision and stiffness each plays a significant part in this field.

With stiffness the intention is that the machine has to be stiff enough to endure the vigorous load that is produced during the cutting process. With the introduction of machining at high speed in modern times, it happens that cutting loads are on average less than low revolutions per minute with high torque procedures. Yet it is still high enough to bring about momentous accuracy faults or inadequate surface texture with far reaching consequences.

There are three structural fundamentals that determine the machine stiffness, namely the drive train and conformity of the way systems, frame geometry, and frame metal. The majority of frame metals present a high scale of stiffness.

Stiffness also relies a lot on the geometry of the machine composition. A dense machine reduces the machine compliance, therefore it will be better to make use of the smallest machine available to make parts.

To successfully execute Precision Machining one need to steer clear of machines that have unsupported structural members or with an overhung.

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