Exam 6: Programming Concepts and Job Planning
Exam 1: Computer Numerical Control of Machine Tools20 Questions
Exam 2: Measurement and Quality20 Questions
Exam 3: The Nc Programming Process20 Questions
Exam 4: Nc Materials, Tooling and Machining Processes20 Questions
Exam 5: Tool and Workpiece Setup20 Questions
Exam 6: Programming Concepts and Job Planning20 Questions
Exam 7: Codes for Positioning and Milling20 Questions
Exam 8: Basic Codes to Control Machine Functions20 Questions
Exam 9: Hole-Making Cycles20 Questions
Exam 10: Tool Radius Compensation20 Questions
Exam 11: Advanced Programming Concepts20 Questions
Exam 12: Lathe Programming20 Questions
Exam 13: Cadcam20 Questions
Exam 14: Mathematics for Nc Programming20 Questions
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The geometry of the finished workpiece will be the ultimate measure of the success or failure of your programming.
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(True/False)
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Correct Answer:
True
Provide some guidelines for developing efficient workpiece setups.
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(Essay)
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Correct Answer:
In summary, the following guidelines will help you to develop setups that are more efficient: Follow the 3-2-1 locating principle when applicable. Use as few setups as possible. Eliminate preparatory and secondary operations if possible. Use off-the-shelf tooling when possible and build dedicated fixtures only as a last resort. Coordinate the raw material purchase with the process plan.
The key to properly locating a workpiece is a principle called ____.
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(Multiple Choice)
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Correct Answer:
A
A(n) ____ is a reference plane or point that is defined on the engineering drawing from which other dimensions are established.
(Multiple Choice)
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The term ____ describes codes or values that stay active until changed by another code or value.
(Multiple Choice)
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We know from our study of the Cartesian coordinate system that any location in the first quadrant will have ____ coordinates.
(Multiple Choice)
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In the end, it does not really matter where you put the work zero as long as it is kept in the proper relation to the locating surfaces.
(True/False)
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Most programs today are written on modern, PC-based computers with a text editor that makes it very easy to copy and paste redundant code and to make changes at will.
(True/False)
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____ pins are cylindrical pins that have been ground slightly oversized.
(Multiple Choice)
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Modern CNC machine tools can be programmed to perform machining operations with a language commonly referred to as H & N codes.
(True/False)
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Rough, cast, and saw-cut surfaces must usually be ____ before they can be used as locating surfaces.
(Multiple Choice)
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On most raw materials, the stock faces are relatively flat and square from the mill.
(True/False)
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____ compensation automatically offsets the tool from the programmed path.
(Multiple Choice)
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Toolpaths are difficult to plot because we have to manually compensate for the ____ of the tool.
(Multiple Choice)
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The NC part program is made up of distinct units of instruction called ____.
(Multiple Choice)
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What is the first step in planning and executing a CNC machining job?
(Multiple Choice)
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