BROKEN-OUT SECTIONS

A broken-out section, like other sections, is used to show the interior of a part. The extent of the section is shown by a short break line, Figure 8.10.

OTHER SECTIONS

Other types of sections include offset sections and removed sections. Note that each section receives its name from the method in which it is obtained or shown. A basic knowledge of full and half sections will assist in understanding these other types of sections.

FIGURE 8.10 ■ Broken-out section.

NOTES

SPRING SHACKLE

QTY 2

SCALE 5/8" = 1"

ORDER NO. 579 SPEC

|MATL CRS EXCEPT AS NOTEO~

DATE:

DRAWN BY: L. GRADY

TOLERANCE

DRAWING NO. 5068

COMPANY NAME

Graph paper is provided at the end of this review for your use. Refer to the drawing, Spring Shackle, page 104.

1. Name the views shown. 11. What is the shape of the nut?

12. What is the dimension for distance ©

2. Identify those parts whose cross-hatching lines 13. Prepare a bill of materials for making this indicate the kind of material from which they object.

are made.

Bill of Materials

No.

Material

Size

3. Which method (or methods) of dimensioning is (are) used on this print?

4. What linear length represents the dimension ЗЧ" on this print?

14. What is the size of the bolt required?

15. What is the size of the nut across flats?

5. List the location dimensions for the 0 .375 holes.

16. What is the tolerance specified for drilled holes?

6. What is the overall size of the rectangular plate?

17. What type of section is shown?

7. Sketch a symbol used on this print to represent an external thread.

18. Identify the parts to be drilled.

8. Which part or parts does line represent?

19. What is the OD of the fiber bushing?

9. Which line is used in the view shown to the left to represent the 1/4" pipe size?

20. What is the ID of the BI pipe? (Refer to Appendix 3.)

10. Which line represents the outside circumference of the thread?

TOLERANCE ON ALL DRILLED HOLES + .005" UNLESS OTHERWISE SPECIFIED

TOLERANCE ON ALL FINISH DIMENSIONS ± A

TOLERANCE ON ANGULAR DIMENSIONS ± 1°

QTY 1

GEAR BLANK

SPEC

ORDER NO. 89

SCALE 1 /4” = 1 "

MATL COLD ROLLED STEEL

DATE:

DRAWN BY: L. GRADY

DRAWING NO. 30

TOLERANCE: SEE NOTE

COMPANY NAME

Refer to the drawing, Gear Blank, on page 108.

1. a. Identify the view shown on the left. 8. How much undersize can all flame cuts be made?

b. Identify the line on this view that indicates that a section view is required.

9. What are the limits on the finished outside diameter of the part?

2. What type of section view is used?

3. Why is a section view used?

10. Make a complete bill of materials required for making the part. Allow limits as indicated on the print for any overall size that may require finishing.

4. a. Why do groups of the section lines shown vary in direction from other groups?

b. What type of material is represented by the section lines used?

Bill of Materials

No.

Material

Size

(B

d.

5. What are the dimensions for distances through?

_f_-----------------------------------------------

©--------------------------------------------------

®--------------------------------------------------

®--------------------------------------------------

6. Why should the 0 .375" hole be drilled before fabricating the part?

b. What method is specified for cutting these parts?

12. What is the wall thickness of the hub?

13. What is the order number of the part?

14. How many degrees are specified for each of the flame cut sections?

7. a. How much oversize can all flame cuts be made?

15. a. What method is specified for cutting the 1" diameter hole?

b. How many flame cuts are to be made?

b. What is the tolerance for the 1" diameter hole?

UNIT 8: REVIEW C

1. a. Describe the type of line used for showing 4.

the perimeter of a phantom section.

Sketch a revolved section for the following metal shapes and identify each shape. Use graph paper provided for answers.

b. Sketch the type of section lining used to illustrate a part that is drawn in phantom Show this within a rectangular phantom shape.

a. What are two purposes of a phantom section drawing?

b. Give an explanation for your answer to 3a.

b. Fill in the appropriate portions of the following sketches using phantom section lines to illustrate two purposes for a phantom section drawing. Identify the purpose of each.

3. a. Is the part that is shown in phantom usually dimensioned?

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