Machining method of multi-angle tiny square groove

Abstract

The invention discloses a machining method of a multi-angle tiny square groove. The method comprises the following steps: a lower cutter hole of which the radius is smaller than the length and the width of a tiny square groove is formed by drilling in the central position of the tiny square groove; and then, with the center of the lower cutter hole as a starting point, a milling cutter of a milling groove performs milling to one side edge of the tiny square groove along the radius direction of one side edge, perpendicular to the tiny square groove, of the lower cutter hole, and the milling cutter surrounds the four side edges of the tiny square groove for a circle along the same direction, returns to the central position of the lower cutter hole and stops milling, so that the tiny square groove can be obtained. Due to the fact that the cutter stops milling in the center of the tiny square groove finally, salient points are avoided, and the machining quality is improved. Meanwhile, themachining method has the advantages of being easy and fast in machining, high in precision and the like.

Description

technical field [0001] The invention belongs to the technical field of PCB board processing, and in particular relates to a processing method for multi-angle tiny square grooves. Background technique [0002] When the traditional PCB board processes tiny square slots, a round hole that is one specification larger than the gong knife will be added to one corner of the tiny square slot as the lower hole. For tiny square slots whose length and width are slightly larger than the diameter of the gong knife, for example A 0.6mm gong knife cannot be added to the lower hole in the shape of a small square groove with a length and width of 0.7mm. Please refer to the attached image 3 , when the gong knife is lowered from a certain corner, because there is no hole for the lower knife, the gong knife will move left and right when it touches the PCB board (attached figure 1 For the tiny square grooves that require processing, attach figure 2 It is a small square groove actually proces...

AI Technical Summary

Problems solved by technology

[0002] When the traditional PCB board processes tiny square slots, a round hole that is one specification larger than the gong knife will be added to one corner of the tiny square slot as the lower hole. For tiny square slots whose length and width are slightly larger than the diameter of the gong knife, for example A 0.6mm gong knife cannot be added to the lower hole in the shape of a small square groove with a length and width of 0.7mm. Please refer to the attached image 3 , when the gong knife is lowered from a certain corner, because there is no hole for the lower knife, the gong knife will move left and right when it touches the PCB board (attached figure 1 For the tiny square grooves that require processing, attach figure 2 It is a small square groove actually processed), resulting in a state of bumps at a certain point after molding, which affects product quality

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