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User's Manual ISO TNC 360 (260020xx, 280490xx) - heidenhain

User's Manual ISO TNC 360 (260020xx, 280490xx) - heidenhain

User's Manual ISO TNC 360 (260020xx, 280490xx) - heidenhain

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7 Programming with Q Parameters<br />

7.8 Examples for Exercise<br />

Machining a hemisphere with an end mill<br />

<strong>TNC</strong> <strong>360</strong><br />

Notes on the program:<br />

• The tool moves upwards in the ZX plane.<br />

• You can enter an oversize in block N120<br />

(Q12) if you want to machine the contour<br />

in several steps.<br />

• The tool radius is automatically compensated<br />

with parameter Q108.<br />

The program works with the following values:<br />

• Solid angle: Start angle Q1<br />

End angle Q2<br />

Increment Q3<br />

• Sphere radius Q4<br />

• Setup clearance Q5<br />

• Plane angle: Start angle Q6<br />

End angle Q7<br />

Increment Q8<br />

• Center of sphere: X coordinate Q9<br />

Y coordinate Q10<br />

• Milling feed rate Q11<br />

• Oversize Q12<br />

The parameters additionally defined in the<br />

program have the following meanings:<br />

• Q15: Setup clearance above the sphere<br />

• Q21: Solid angle during machining<br />

• Q24: Distance from center of sphere<br />

to center of tool<br />

• Q26: Plane angle during machining<br />

• Q108: <strong>TNC</strong> parameter with tool radius<br />

Part program<br />

%<strong>360</strong>712 G71 *<br />

N10 D00 Q1 P01 + 90 *<br />

N20 D00 Q2 P01 + 0 *<br />

N30 D00 Q3 P01+ 5 *<br />

N40 D00 Q4 P01 + 45 *<br />

N50 D00 Q5 P01 + 2 *<br />

N60 D00 Q6 P01+ 0 *<br />

N70 D00 Q7 P01 + <strong>360</strong> *<br />

N80 D00 Q8 P01 + 5 *<br />

N90 D00 Q9 P01 + 50 *<br />

N100 D00 Q10 P01 + 50 *<br />

N110 D00 Q11 P01 + 500 *<br />

N120 D00 Q12 P01 + 0 *<br />

N130 G30 G17 X+0 Y+0 Z–50 *<br />

N140 G31 G90 X+100 Y+100 Z+0 *<br />

N150 G99 T1 L+0 R+5 *<br />

N160 T1 G17 S1000 *<br />

N170 G00 G40 G90 Z+100 M06 *<br />

Assign the sphere data to the parameters<br />

Workpiece blank; define and insert tool<br />

N180 L 10,0 * ............................................................. Subprogram call<br />

N190 G00 G40 G90 Z+100 M02 * ............................. Retract tool; return jump to beginning of program<br />

Continued...<br />

7-19

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