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IE217 HW#4 CNC program

    Assignment Instructions

    A

    IE217

    HW#4 CNC program

    Directions:

    • Work with another person or individually
    • You are asked to calculate RPM and ipm
    • You are asked to do the G and M codes for each problem

     Milling:

    Drilling:

     PROBLEM #1. Directions: write a CNC program. Worth 5

    Use for the work piece material: alloy steel Medium Carbon 4140 with hardness of 425.  For the tool material use a high speed steel tool.  Tool specifications and finished part dimensions are placed on drawing.   T3= Drilling diameter ¼”, T2= center drill 1/8”, and T1=milling diameter 1in.

    ToolsfeedCutting speedRPMipm
    T1= Milling 1” diameter high speed steel. N = 2
    T2 = center drill. Diameter 1/8”
    T3= drill. Diameter ¼”

    Problem #2 Worth 10 points. Use for the work piece material: alloy steel Medium Carbon 4140 with hardness of 425.  For the tool material use a high speed steel tool.  Tool specifications and finished part dimensions are placed on drawing.  Remember. T3= Drilling diameter ¼”, T2= center drill 1/8”, and T1=milling 0.5in.

    ToolsfeedCutting speedRPMipm
    T1= Milling 0.5” diameter high speed steel. N = 2
    T2 = center drill. Diameter 1/8”
    T3= drill. Diameter ¼”

     

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