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Chapter 12 Sawing and Cutoff Machines 199

TEST YOUR KNOWLEDGEPlease do not write in the text. Write your

answers on a separate sheet of paper.

1. List the three basic types of metal-cutting saws.

2. The _____ type saw has a back-and-forth cut-ting action. However, it only cuts on the _____stroke.

3. What is the three-tooth rule for sawing?

4. When using a power sawing machine, withwhich materials should you not use coolant?

5. Hacksaw blades are manufactured in two prin-cipal types. Name them.

6. The following rule-of-thumb should be fol-lowed for selecting the correct blade:a. _____ teeth per inch for cutting large sec-

tions or readily machined materials.b. _____ teeth per inch for cutting harder

alloys and miscellaneous cutting.c. _____ teeth per inch for cutting on the

majority of light-duty machines, wherework is limited to small sections and mod-erate to light feed pressures.

7. List three methods used to put proper tensionon a power hacksaw blade.

8. When is a stop gage used?

9. What three advantages does the continuousband sawing machine offer over other types of

power saws?

10. Band saw blades are made with two types ofteeth. Name them.

11. The tooth pattern of a blade determines theefficiency of a blade in various materials.a. The _____ tooth is best suited for cutting

most ferrous metals.b. The _____ tooth pattern is preferred for

cutting aluminum, magnesium, copper,and soft brass.

c. The _____ tooth is also recommended formost nonferrous metallic materials.

12. List the three types of circular metal-cuttingsaws.

13. List five safety precautions to be observedwhen operating a power saw.

Machining F200

Grooving and parting are operations frequently performed on the lathe. This grooving tool uses a replace

able insert that clamps into a special thin holder for performing deep face grooving. The insert can be

reversed, allowing a quick change to a new cutting edge when one becomes dull or damaged. Inserts fo

grooves ranging from 2 mm to 6 mm in width are available. (Iscar Metals, Inc.)