Design Process of Self-tapping Chicago Screw Base Hole

source：    Author：Catherine    views：191    Release time：2015-01-22

As far as I know, many friends in screw industry are very interested about the design process of self-tapping Chicago screw base hole. However, not many people really understand its design process. So I will analyze the design process of self-tapping Chicago screw base hole today.

1. view

Graphics include the expanded part and the bending part of the workpiece. There is no corresponding relations of three view drawing. Generally, It should be marked "expanded figure" or "bending figure". Expanded figure must be drawn according to  the proportion of 1:1. While bending figure do not need to be drawn to scale. The drawing must mark the folding marks and bending direction.

2.The rules of layer color

White-- contour line(the IP secant), green-- dimension line, red-- center line, light blue-- blocking line, yellow-- fine line. Etching line must adopt the non-white layer, and mark "sculpture".

3.Expanded figure should be drawn by medium tolerance.

For the artifacts cut by laser, if the tolerance zone of the hole is less than 0.1 mm, the hole generally should be drawn small 0.3 mm according to nominal size, and mark the size of chambering or reamed hole.

4. laser cutting

The size of Chicago screw base hole cut by laser should be drawn according to the rules of data.

Dongguan King-tower Hardware Co.,Ltd is a professional manufacturer of Chicago screw. Welcome calls to inquiries and negotiations.