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Chapter 7 - Exercises
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7.2.1 7.2.2 7.3 7.5 7.6 7.9
Chapter 1
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Chapter 3
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Chapter 5
Chapter 6
Chapter 7
Chapter 8
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7.2.1  Sketch the axis speed during a zero-return sequence, for a machine tool outfitted with a deceleration dog switch.  Include the switch signal, marker pulse and stroke distance in the drawing.  Repeat the sketch for a high-speed memory zero-return.
    a.)  Repeat the sketch for a high-speed memory zero-return.
    b.)  What is the distance from zero return to the marker pulse?
    c.)  How can you calculate the distance from zero return to the dog?

7.2.2  To increase the zero-return stroke by 0.0320 inches requires how many 0.001 mm parameter units?

7.3  List some reasonable interlock conditions for the following:
    a.)  Spindle Start.
    b.)  Cycle Start.
    c.)  Feed Hold.
    d.)  Emergency Stop.

7.5  Sketch a circle having the following machine tool problems:
    a.)  Excessive mechanical backlash.
    b.)  Excessive cutting rate.
    c.)  Unbalanced servo position loops.

7.6  Using the results of Exercise 5.2, list the specifications required to completely describe: 
    a.)  A two axis lathe system.
    b.)  An add on rotary axis system.

7.9  Sketch the schematics for a new RS232 cable having a 9-pin connector on one end and a 25-pin on the other for:
    a.)  Software handshaking.
    b.)  Hardware handshaking.
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