Student Workbook for Programming of CNC Machines. Ken Evans

Student Workbook for Programming of CNC Machines - Ken Evans


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      In the example in Figure 1-1, the parts are provided as 3.0625 long slugs with one end having already been faced. It will be necessary to clamp the 2.50 diameter in pre-machined soft jaws with enough material extended to allow machining of the part, including removal of 1/16 inch from the face of the part. The material is 4340 alloy steel. Dimensional tolerances are as follows: .X = plus or minus .015 inch, .XX = plus or minus .010 inch, .XXX = plus or minus .005 inch, and angular tolerance is plus or minus .5 degree. Please use copies of the Process Planning sheets and develop a plan to machine the part to dimensional requirements.

Date Prepared By
Part Name Part Number
Machine Program Number

      Workpiece Zero: X___________ Y __________ Z _________

      Setup Description:

ToolNumber OffsetNumber Tool Description Comments
Date Checked By
Part Name Part Number
Sheet ___ of ___
Blueprint Dimentsion Tolerance Actual Dimension Comments

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