PCB target drilling machine and its use method

Abstract

The embodiment of the invention discloses a pressing foot for a PCB drilling machine and a machining method of the pressing foot for the PCB drilling machine. The pressing foot comprises a pressing foot body made of a waste PCB. The bottom surface of the pressing foot body is provided with at least two fixing holes which axially penetrate through the pressing foot body and are used for fixing the pressing foot body to the drilling machine. The embodiment of the invention further discloses the PCB drilling machine and a use method of the PCB drilling machine. The PCB drilling machine comprises a fixing base, a drill bit opposite to the fixing base and the pressing foot, wherein the pressing foot is arranged between the fixing base and the drill bit and is fixed to the fixing base. According to the PCB drilling machine, the pressing foot is made of the waste PCB, and the fixing holes and screw holes are correspondingly formed in the pressing foot and the fixing base and are respectively arranged in an annular array, wherein the distance between the center of each annular array and the axis of the drill bit is larger than the radius of the drill bit; materials are convenient to draw, machining is easy, cost is low, and the pressing foot can be repeatedly used; in this way, the work efficiency and the machining quality of the PCB drilling machine can be effectively improved.

Description

technical field [0001] The invention relates to the field of circuit board manufacturing, in particular to a PCB target drilling machine and a method for using the PCB target drilling machine. Background technique [0002] In the process of making PCB (Printed Circuit Board, the Chinese name is printed circuit board, also known as printed circuit board, printed circuit board), it is necessary to use a drilling machine to drill holes on the PCB board, and fix it by fixing it on the drilling machine. The presser foot on the seat cooperates with the drill bit arranged under the presser foot to realize the drilling operation. [0003] The presser foot of the existing PCB target drilling machine is uniformly produced by the manufacturer, the standard height is 2mm, and a center hole of 3.2mm is opened in the middle; two symmetrical screw holes are opened on the outer surface of both sides of the fixing seat, and through the matching The screw fastens the presser foot to the fixe...

AI Technical Summary

Problems solved by technology

[0005] 1. The existing presser foot is made of plastic material. Since the drilling target processing of the PCB board is a continuous and repetitive operation, the constant friction between the drill bit, the PCB board and the presser foot will easily cause the wear of the presser foot, and the service life of the presser foot is short. , high replacement frequency;

[0006] 2. Since the presser foot is set as standard, it must be purchased uniformly from the manufacturer, and high-frequency presser foot replacement will virtually increase the production cost of the PCB board;

[0007] 3. The existing presser foot is fixed by the screws correspondingly arranged on both sides of the fixing seat. Since the presser foot produces a certain impact force on the screw during repeated and continuous operations, the screw is gradually loosened, which leads to the inability to fix the presser foot. It is firm but prone to displacement. At this time, the repeated drilling of the drill bit will deform the center hole in the middle of the presser foot, and cause gaps when the presser foot contacts the PCB board, resulting in defects such as blast holes and burrs.

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