QUESTIONS FOR SELF-TESTS

1. What are the classification groups of standards ESKD?

2. How many A4 sheets are in A1 format?

3. What are the rules for the location of the main inscription on the format?

4. What is the content of the title block?

5. What is your scale?

6. How are the scales indicated?

7. What is the thickness of axial, center, extension and dimension lines?

8. What lines are used to stroke the contour?

9. What determines the font size?

10. How is the height of lower case letters determined?

11. What marks are used when applying dimensions?

12. At what distance from each other and from the contour line draw dimensional lines?

13. When put a sign of diameter 0, and when the sign of the radius R?

14. Where do they put on the drawing the size of the number relative to the dimension line?

15. How does the image scale affect the size of the dimensions on the drawing?

16. What is bias, as it is designated in the drawing?

17. What is the taper, as it is denoted in the drawing?

18. How do conic chamfers denote in the drawing?

Classification groups of ESKD standards: general design rules, symbols, requirements for drawings, diagrams, standard products.

Number of A4 sheets in A1 format: 8 sheets.

Rules for the location of the title block: in the lower right corner of the drawing.

Contents of the title block: name, scale, date, drawing designation, developer's name.

Scales: natural (1:1), enlargements (2:1, 5:1), reductions (1:2, 1:5).

Designation of scales: 1:1, 2:1, 5:1, 1:2, 1:5.

Line thickness: axial, center, extension and dimension — 0.3-0.5 mm.

Lines for outlining the contour: solid thick lines.

Font size is determined by the height of letters and numbers in millimeters.

The height of lowercase letters: is equal to 2/3 of the height of capital letters.

Dimension symbols: Ø (diameter), R (radius), ∠ (angle), L (length).

Dimension line distance: 10 mm from the contour and 7-10 mm between dimension lines.

The diameter symbol Ø is used for round parts, the radius symbol R is used for arcs and circles.

Size of the number on the drawing: above or next to the dimension line.

The scale of the image does not affect the size of the dimensions, they are indicated in natural size.

Slope: the angle of inclination of the surface; designation — ∇ with the angle value.

Taper: the ratio of the base diameter to the height; designation — c/d.

Conical chamfers: are designated by the angle and linear dimension on the drawing.