feed rate most likely needs to be increased which will increase the chip size

Feed rate most likely needs to be increased which

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feed rate most likely needs to be increased which will increase the chip size. This can also occur from slowing down too much in corners and depending on the application and feasibility, could be corrected by programming to loop. (see image below). When you see the residue of heat, either black/burned material buildup or a blue discoloration of the carbide or tool body itself, it is time to go over the machining parameters to obtain the correct chip load. This will require one or a combination of: - Increasing Feed Speed - Reducing RPM - Changing to a tool with less flutes. This photo shows too much heat generated during the cutting cycle which impacts tool life quite dramatically. When this pattern is seen on a used tool, the chip load is incorrect and the
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1-800-544-8436 POSSIBLE CAUSE REMEDY Deflection cutting edge too long Select a tool with cutting edge not more than ¼” longer than material thickness. Bad or worn collets Check tool shank for evidence of chatter marks. When visible, replace collets. Over-torqueing If tool breaks in the shank area, tightening the collet nut to incorrect torque can cause tool breakage. Invest in a setup-fixture and torque wrench. Overheating If signs of heat buildup are in the tool flute, check chip load and adjust feed/speed. Part Movement Improve vacuum hold-down. Too much pressure on the tool tip For rebates, grooves, slots, use the shortest length to avoid tool breakage. Tool slippage in the collet Replace static collet nut with a bearing nut. TOOL BREAKAGE:
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1-800-544-8436 We hope this presentation has shed some light on some of the tooling questions and challenges you might encounter and that you can apply some of the information we have shared in your own CNC production! If we can be of assistance, feel free to call us or email [email protected] The GDP | GUHDO Team 800-544-8436
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  • Fall '19
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