Students of technical educational institutions often face need of drawing up drawings - it is an inevitable part of educational process. The hairpin as it is rather simple often acts as classical model for the drawing, but allows to understand the basic principles of drawing.
It is required to you
- - sheet of paper of A4;
- - pencils of different hardness;
- - eraser;
- - ruler;
- - compasses.
Instruction
1. To draw a hairpin, take the sheet of paper of A4 format, choose white paper of high quality (very conveniently to use paper with already nacherchenny frame for the main inscription). Besides, prepare several types of pencils: thin firm for projective and dimensional lines, pencils of average hardness for lines of a detail and a thick soft pencil for a final obvedeniye of a hairpin. You need also good eraser for removal of excess lines.
2. Attentively get acquainted with a detail, examine it, understand the general geometry and a form of separate parts. Mentally divide a hairpin of irregular shape into simple parts. If you draw a hairpin from nature, learn all necessary sizes by means of a caliper and a ruler (for example, diameter of a carving and central part, length).
3. Choose a format and quantity of types, often the hairpin is drawn only in a frontal look as it is symmetric. However also profile type of a hairpin or a section can be necessary for you, have it to the right of the main drawing. Plan on the sheet of paper of the place for types and carry out symmetry axes.
4. If the section is necessary for you, surely specify on a front view to what place it corresponds, by means of two vertical lines and capital letters, for example, A-and.
5. Begin to draw a hairpin: plan thin lines a detail, observing all sizes and proportionality of parts. Pay attention to projective communication between a frontal and profile look. Carry out each part of a hairpin at first on a front view, and after that you transfer by means of lines of a projection to a profile look or cuts.
6. Represent a carving by means of continuous main lines on the outer diameter of a carving and the thin line – on internal. On a front view of an outline of internal diameter you see off at all length, and on a profile look or a section designate in the form of an arch? from a circle. If necessary designate sbeg (a corner of 45 degrees).
7. Remove all excess lines after make sure of correctness of the image.
8. Take out all necessary sizes and put down their values a drawing font.
9. Circle the sketch of a hairpin with a soft pencil, contours can be up to 1 mm thick.
10. Fill the main inscription, specify the name of a detail and material.