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PTH half hole manufacturing method

A manufacturing method and aperture technology, applied in the direction of electrical connection formation of printed components, electrical components, printed circuits, etc., can solve problems such as cost waste and achieve cost saving effects

Active Publication Date: 2021-06-15
湖南好易佳电路板股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, a part of the boards that could have been put on the finished product can also be put on the same board, resulting in a waste of cost.

Method used

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Examples

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no. 1 example

[0035] In an embodiment of the present invention, the PTH semi-hole manufacturing method includes the following steps:

[0036] S1: Defining the half hole:

[0037] When there are ≤3 consecutive semi-holes, and the diameter of the semi-holes is 1.75mm<D<8mm, it is a finished gong;

[0038] When there are more than 3 consecutive semi-holes, and the diameter of the semi-holes is 0.45<D≤1.75mm, it is the first gong before alkali etching;

[0039] S2: Make the half hole:

[0040] For the finished gong: when the copper cutting part is arc-shaped, cut the knife at the half-hole copper cutting part; when the copper cutting part is right-angled, design the path of the gong knife at the half-hole copper cutting part at 45°, and cut 3mil into the right-angle part to avoid When the gong is outside the frame, it produces a front;

[0041] For the work before alkali etching: according to the diameter of the half hole of the finished product, the steps of drilling copper skin, pulling wa...

no. 2 example

[0064] Based on the PTH half-hole manufacturing method provided in the first embodiment of the present application, the second embodiment of the present application proposes another PTH half-hole manufacturing method. The second embodiment is only a preferred mode of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0065] The second embodiment of the present invention will be further described below in conjunction with the drawings and implementation methods.

[0066] Please refer to Figure 1-Figure 5 The difference between this embodiment and the first embodiment is that drilling equipment 1 is used for drilling, and a drill mounting seat 2 is installed on the output shaft of the drilling equipment 1, and the bottom side of the drilling mounting base 2 is provided with An installation slot 3 , a drill assembly 4 is installed in the installation slot 3 , and the bottom end of the d...

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Abstract

The invention provides a PTH half hole manufacturing method. The PTH half hole manufacturing method comprises the following steps: S1, defining half holes: when the number of continuous half holes is less than or equal to 3 and the diameter D of the half holes is more than 1.75 mm and less than 8 mm, determining as a finished rout; when the number of continuous half holes is larger than 3, and the diameter D of the half holes is larger than 0.45 mm and smaller than or equal to 1.75 mm, determining as a route to be alkali-etched; and S2, manufacturing a half hole: for the finished route, when the copper cutting part is arc-shaped, cutting the copper cutting part of the half hole; when the copper cutting position is a right angle, designing the path of the milling cutter at the half-hole copper cutting position to be 45 DEG, and cutting the milling cutter into the right angle for 3 mil to prevent burrs from being generated when the outer frame is routed; and for the route to be alkali-etched: according to different diameters of semi-holes of the finished product, carrying out the steps of copper sheet drilling, waste material pulling, rough routing and fine routing. The PTH half hole manufacturing method provided by the invention has the advantages of high working efficiency and cost saving.

Description

technical field [0001] The invention relates to the technical field of circuit boards, in particular to a method for manufacturing PTH half-holes. Background technique [0002] At present, most half-hole plates produced in the industry are of abnormal quality due to half-hole burrs and half-hole copper-free. There are various methods for solving half-hole burrs. Conventional method of semi-hole plate: drilling - electroplating - circuit - two copper - tinning - forming a gong - stripping film - stripping tin - etching, when forming a gong, there is no question whether the half hole really needs to be made in one gong There is no definition, and there is no control method for half-hole burrs and half-hole copper-free. In this way, a part of the boards that could have been put into the finished product can also be put into the same board, resulting in a waste of cost. Secondly, a clear control method is also needed for half-hole burrs and half-hole copper-free. [0003] The...

Claims

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Application Information

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IPC IPC(8): H05K3/42
CPCH05K3/42H05K2201/095
Inventor 梁涛游定国
Owner 湖南好易佳电路板股份有限公司