A kind of manufacturing method of countersunk hole of composite circuit board
A production method and circuit board technology, which is applied in metal processing and other directions, can solve the problems of reduced success rate of countersink hole drilling, increase of circuit board waste gas rate, and large circuit board displacement, so as to improve the production success rate and reduce waste gas efficiency and reduce workload
Active Publication Date: 2021-06-04
惠州市盈帆实业有限公司
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Problems solved by technology
[0004] Existing workbenches used on circuit board drilling machines generally have a long hole, which is used for the drill bit to pass through the circuit board without hindrance, so that the drilling process is smoother without pause, and the hole wall is smooth without Obvious burrs increase the quality of the drilling, but when the existing drilling machine drills the circuit board, many of them manually press and position the circuit board, and the pressing of the circuit board in this way is usually only one point or two points The pressure on the circuit board makes the circuit board stressed unevenly when drilling, resulting in a large range of bulge on the edge of the countersink hole, and the possibility of the circuit board shifting is very high, resulting in a decrease in the success rate of countersink hole drilling. Severely increased outgassing rate of the plate
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Embodiment 1
[0049] see figure 1 , a method for manufacturing a counterbore of a composite circuit board, comprising the following steps:
[0050] S1. To prepare before drilling, first clean the drilling machine worktable of debris and dust;
[0051] S2. Position debugging. According to the size of the hole to be drilled, select the appropriate type of drill and install it on the drilling machine. Place the circuit board that needs to be countersinked on the workbench of the drilling machine, and then adjust the positions of the circuit board and the drill. Make the drill bit just above the target drilling position;
[0052] S3. Adjust the position of the two double-headed fixed-point splints on the workbench, so that the two double-ended fixed-point splints just clamp the circuit board, and the target drilling position is just located in the circular range surrounded by the two double-headed fixed-point splints. Inside, fixed-point pre-clamping is formed for the target drilling position...
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The invention discloses a method for manufacturing a counterbore of a composite circuit board, which belongs to the technical field of counterbore production. A method for manufacturing a counterbore of a composite circuit board can be achieved by using a double-head positioning splint and a rigid fluff layer , the circuit board can be positioned from below, making it difficult to shift, and at the same time, the circuit board can be clamped at a fixed point and can be adjusted through the circular range enclosed between two reverse splints that can be changed in hardness and softness Change the range, and then adapt to countersink holes of different sizes, so that when drilling countersink holes, the edge of the hole is limited by the reverse splint, and the range of protrusions is correspondingly reduced. The splint can expand the clamping force on the upper circuit board, which can not only make the circuit board stressed evenly, but also improve the stability of the circuit board during drilling, so as to effectively reduce the workload of the circuit board leveling in the later stage, and then improve the countersunk head. The success rate of the hole is improved, and the exhaust gas rate of the circuit board is reduced.
Description
technical field [0001] The invention relates to the technical field of making counterbore holes, in particular to a method for making counterbore holes of a composite circuit board. Background technique [0002] Printed circuit board, also known as printed circuit board, is a provider of electrical connections for electronic components. It has been developed for more than 100 years; the main advantage of people using circuit boards is to greatly reduce wiring and assembly errors Automation level and production labor rate. With the rapid development of electronic information technology, printed circuit boards (referred to as PCB) are developing in the direction of high density, high integration, high speed and high frequency. The mutual conduction between PCB layers can be realized by back drilling technology. Back drilling technology refers to first drilling through holes in the PCB graphics area, and then electroplating the copper layer on the PCB after the first level dri...
Claims
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IPC IPC(8): B26F1/16B26D7/02B26D7/01
CPCB26D7/015B26D7/02B26D7/025B26F1/16
Inventor 李争军刘立冬李爱明
Owner 惠州市盈帆实业有限公司