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Considering cutting a side milling on an area of depth of cut (ap), the number axis contact point (ACP) vary according to the helix angle. From the 18th to the helix angle high amounts ACP over the helix angle. low. When analyzing the helix angle 600 and ap = 20mm. stacking intelligence to the milling began pounding Neng 1st flute will see that there are many ACP equals 5 points (ACP1 milling with 1st flute, ACP2 milling with 4th flute, ACP3 milling with 3rd. flute, ACP4 milling with 2nd flute and ACP5 milling with 1st flut). End mill with a number of ACP very (high helix angle) allows the area to cut to a minimum the number of ACP made of thick pieces of cut less than end mill. with little ACP (low helix angle). Notice from Figure 19 helix angle 600 are thick cut chips than the other. For this reason, the ACP is another one that shows a high helix angle will cause low cutting force.
In addition, side milling stainless steel with end mill, the helix angle as well. I found that shaped piece cut look. Spiral each different helix angle as shown in Figure 20. The high helix angle spiral roll significantly more streamlined and a low helix angle. In contrast, the color of debris at high helix angle saw a golden light. Clearly, the helix angle 600. The reason that the high helix angle and high temperatures combined with scrap pieces of thin cut, the cut fragments react with heat sensitive. The debris cut from the helix angle 300 is still the color of silver, stainless steel, is unchanged. The debris cut very thick heat, so do not cut debris resulting color change reaction.
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