PCB (Printed Circuit Board) drill bit and drilling machine with same

Abstract

The invention provides a PCB (Printed Circuit Board) drill bit and a drilling machine with the same. The PCB drill bit comprises a drilling part and an end shank part connected with the drilling part; the drilling part comprises a drilling head, a drilling neck and a drilling root; the end surface of the drilling head is provided with a main cutting trench; two ends of the main cutting trench extend to form auxiliary cutting trenches through intersecting; fulcrums where the main cutting trench and the auxiliary cutting trenches are intersected are distributed on a circumference at equal distance; and the drilling neck and the drilling root are provided with a spirally extending main scrap removal trench for removing scraps after a PCB substrate is drilled. The PCB drill bit and the drilling machine with the same provided by the invention are higher in hole location precision as well as lower in machining difficulty and cost.

Description

【Technical field】 [0001] The invention relates to the technical field of PCB manufacturing, in particular to a PCB drilling drill bit and a drilling machine using the drill bit. 【Background technique】 [0002] Existing PCB substrates are usually drilled with a double-edged drill bit. The drill bit has two grooves from the tip to the root, and only two points on the tip section are in contact with the hole wall of the substrate. The hole position is not good, and the number of stacked plates should not be too high under low-speed (120,000 rpm) equipment, otherwise the drill bit will be easily broken, so the hole position accuracy of the double-edged drill bit is low, the processing is difficult and the cost is high. . 【Content of invention】 [0003] In view of this, it is necessary to provide a PCB drilling drill with high hole position accuracy, less processing difficulty and low cost and a drill using the same. [0004] A PCB drilling bit and a drilling machine using th...

AI Technical Summary

Problems solved by technology

[0002] Existing PCB substrates are usually drilled with a double-edged drill bit. The drill bit has two grooves from the tip to the root, and only two points on the tip section are in contact with the hole wall of the substrate. The hole position is not good, and the number of stacked plates should not be too high under low-speed (120,000 rpm) equipment, otherwise the drill bit will be easily broken, so the hole position accuracy of the double-edged drill bit is low, the processing is difficult and the cost is high.

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