High Speed Tooling
High Speed Tooling
Concentricity
Tools should be selected based on there ability to hold the tool concentric to spindle rotation. This normally results in tools that are friction driven, such as collet chucks, shrink fit holders, power milling chucks, HP Chucks, etc.
Balance
The effect that a lack of balance will have on a cutting operation is relative to the type of cutting forces generated in the cut. The higher the cutting forces the less effect balance will have on the overall operation of the machine tool. Under most circumstances a pre-balanced holder is all that is required to achieve a balanced machining condition.
Tools to Consider for High-Speed Applications
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ER Collet Chuck: For most drilling and lighter higher speed milling applications. Very good concentricity and very good balance. Safe operational speed as high as 30,000 rpm. Larger sizes have a limit based on centrifugal forces. HP Collet Chucks: For precision nominal drilling, milling, grinding or any other highly precise machining operation. The precision nature of the tool provides excellent concentricity and very high clamping forces at high speed. The nature of the clamping element restricts the side load capability to precision finish only. Balance is good. |
Shrink Fit Holders: For nominal size drilling with higher speed and higher feed milling applications. Excellent concentricity and excellent balance. No moving features, and thin nose diameters, make it exceptional for high speed machining. Safe operating speeds are extremely high due to little impact from centrifugal forces. Power Milling Chucks: For precision in moderate and lower speed milling and nominal drilling applications. Very good concentricity and good side load capability. Movable large clamping nut restricts the balance and centrifugal force capability, limiting the speed to 8,000 to 12,000 rpm. |
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