Polygonal Shank Style Polygon Shank Toolholders
■ General Features SumiPolygon shanks feature keyless couplings with the characteristic polygonal shape, which bear cutting torque evenly on three surfaces, providing high rigidity and high index accuracy.
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■ Coupling Structure
■ Features ● Sizes · Shank size PSC32 (DCSFMS = 32mm) to PSC80 (DCSFMS = 80mm) supported ● High Rigidity/High Precision · 1/20 polygon tapered shape supported on 2 faces for high rigidity · Keyless coupling distributes cutting torque uniformly to 3 faces, reducing fluctuations in cutting edge height · Repeatability when tools are changed is within ±2μm on all 3 axes ● Reduced Tool Change Time · Changing inserts on the machine is not needed so the tool change time is significantly reduced ● Coolant supported (up to 1MPa)
Tapered + Supported by 2 Faces
Improved Centring
■ Repeat Accuracy Repeatability when tools are changed is within ±2μm on all 3 axes X-Axis (Radial Direction) Y-Axis (Center Height Direction), Z-Axis (Lengthwise Direction)
3
X-Axis (Radial) Z-Axis (Centre Height) Y-Axis (Length)
2
Y-Axis ±2μm
X-Axis ±2μm
1
Z-Axis ±2μm
0
1 2 3 4 5 Tool Change Count (Times)
G8
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