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The use of marking punches necessitates exact scribing of the line spacings wherever longer combinations of figures or letters shall be punched.
The following data may serve as guideline for the spacing of the lines (A) in relation to the height of the figures or letters (H):
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A |
H |
|
3 |
2.5 |
|
5 |
4 |
|
8 |
6 |
|
10 |
8 |
|
12 |
10 |
Use a pencil or brass scriber for scribing! After marking remove the scribed line!
The marking punch is applied similar to a centre punch:
The marking punch is set on the scribed line in inclined position, aligned, set vertically and hit by one powerful blow.
Notes
- The direction of the row of figure or letter combinations should be selected so as to permit constant checking of the alignment!
Figure 25 Marking in the direction of
blow to the front
Figure 26 Marking on a filed face of
a cylindrical workpiece
- When marking small workpieces a suitable hammering support is to be selected!Put round stock on a vee!
- If the face to be marked is uneven or not flat, it should be smoothed or flattened’
How is scribing to be done for marking of combinations of figures or letters?
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