In metal cutting, heavy feeds promote the formation of built up edge. In gear cu

Question

In metal cutting, heavy feeds promote the formation of built up edge. In gear cutting, using the simple indexing method, an index plate drives the gear blank to rotate a given indexing angle. In Erichsen cupping test, the sheet metal specimen is clamped over a flat die with a load of 100 kg. Under the same cutting conditions, decreasing the rake angle of the tool decreases the power required for cutting. Dial indicators can be calibrated to give readings that are comparable to the moisture content of the molding sand.

Explanation / Answer

1. F ( low speed promotes the formation of built up edges.

2. T

3. F ( spherical die )

4. F ( 1° increasing in rake angle , 2% power will decrese.

5. T ( hardness test )

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