The treatment method of CNC cutting process / leadin line setting
General CNC cutting machine before the implementation of cutting needs to complete the drawing and cutting process editing and processing, in order to ensure the quality of the work parts, generally not on the work outline directly arranged penetration point (i.e. fire point), but to make it leave the bow and arrow a distance, after a cut line into the work surface, this line is often referred to as cutting lead or introduction line. The length of the introduction line is determined by the thickness of the material and the cutting method used, and in general, the length of the lead length increases with the thickness.
The arrangement of the introduction line should be noted as follows:
1. the introduction line in the case of not affecting perforation and cutting, should be as short as possible, its introduction direction should be as consistent as possible with the cutting machine operating direction. The slag that splashes during perforation should not fly towards the cutter, but in the opposite direction where the cutter starts running.
2. the introduction of the line in the cutting of the inner cavity of the work
(1) Straight leads, in practice and various, straight leads are most commonly used, but at the cutting start, the end point is easy to leave a dent and small tail. When the inner cavity is square, the leads are generally cut in from a certain angle, and the circular inner cavity is generally not required.
(2) round leads, if higher quality cutting contacts are required, it is best to use garden leads.
(3) When cutting the shape of the work piece, the lead is generally directly used when cutting the shape.
(4) design introduction line, should also minimize material waste, sometimes need to cooperate with the set of materials to consider.
