Manufacturing And Production Technology
Tool life is measured by the

Time the tool is in contact with the job
Number of pieces machined between tool sharpenings
Volume of material removed between tool sharpenings
All of the listed here

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Manufacturing And Production Technology
A fixture is defined as a device which

Holds and locates a workpiece and guides and controls one or more cutting tools
All of these
Is used to check the accuracy of workpiece
Holds and locates a workpiece during an inspection or for a manufacturing operation

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Manufacturing And Production Technology
In a CNC program block, N002 GO2 G91 X40 Z40......, GO2 and G91 refer to

Circular interpolation in clockwise direction and absolute dimension
Circular interpolation in counter clockwise direction and incremental dimension
Circular interpolation in counter clockwise direction and absolute dimension
Circular interpolation in clockwise direction and incremental dimension

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