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Detection piece for PCB (Printed Circuit Board) grinding crack test and detection method thereof

A detection method and technology of detection sheets, which are applied to measuring devices, mechanical measuring devices, and mechanical devices, etc., can solve problems such as inconvenient operation and poor accuracy, and achieve the effects of fine scale, low detection cost, and strong stability.

Pending Publication Date: 2022-08-09
广东喜珍电路科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method of wear scar measurement has the following problems: 1. It is inconvenient to operate, and it is necessary to use a ruler to measure the line twice, and it is necessary to prepare tools for placing on the table; 2. The accuracy is poor. Pen strokes are close to 1mm thick, some even have 3mm, and the control range is generally only ±2mm, even oil-based pen strokes cover the wear marks and cannot be observed

Method used

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  • Detection piece for PCB (Printed Circuit Board) grinding crack test and detection method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A test piece for PCB wear scar test, which is characterized in that it includes a main body 1, and a center scale line 11 is provided, and a first test line 12 and a second test line are symmetrically arranged on both sides of the center scale line. 13. The distance between the center scale line and the first test line is w1, and the distance between the first test line and the second test line is w2, where w1=w2.

[0037] Further, the first test line is a marked line including a short dashed line.

[0038] Further, the second test line is a marked line including two short dashed lines.

[0039] Further, the body is a long strip of film.

[0040] Further, the w1 is 1 mm, and the w2 is 1 mm.

Embodiment 2

[0042] A test piece for PCB wear scar test, which is characterized in that it includes a main body 1, and a center scale line 11 is provided, and a first test line 12 and a second test line are symmetrically arranged on both sides of the center scale line. 13. The distance between the center scale line and the first test line is w1, and the distance between the first test line and the second test line is w2, where w1=w2.

[0043] Further, the first test line is a marked line including a short dashed line.

[0044] Further, the second test line is a marked line including two short dashed lines.

[0045] Further, the body is a long strip of film.

[0046] Further, the w1 is 0.5mm, and the w2 is 0.5mm.

Embodiment 3

[0048] A kind of detection method of the detection piece used for PCB wear scar test, is characterized in that, comprises the following steps:

[0049] S1. Design test piece data, prepare the test piece of Example 1 or Example 2;

[0050] S2. Switch the machine to the wear scar test mode, use the bare copper plate without wiring, and feed the material from the plate placement section. After the plate reaches the grinding and brushing section, the wear scar test will be performed in the set mode. After the dry section is conveyed out, the grinding wheel will leave a grinding line on the bare copper plate;

[0051] S3. Attach the test piece to the wear scar 2, so that one side of the wear scar is aligned with the baseline, and observe whether the other side of the wear scar is within the scale range;

[0052] S4. Record the data, take the readings of both ends and the middle part, and record them on the relevant form;

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PUM

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Abstract

The invention provides a detection piece for PCB grinding crack test and a detection method thereof, the detection piece comprises a body, the body is provided with a central scale line, a first test line and a second test line are symmetrically arranged on two sides of the central scale line, the distance between the central scale line and the first test line is w1, the distance between the first test line and the second test line is w2, and the distance between the first test line and the second test line is w3. Wherein w1 is equal to w2. According to the invention, the problem of inconvenient measurement by operators is effectively solved, and the adopted film is high in precision, so that the detection precision is high, the stability is strong, and a set of standardized grinding crack test method can be formed.

Description

technical field [0001] The invention relates to the technical field of PCB detection, in particular to a detection sheet used for PCB wear scar detection and a detection method thereof. Background technique [0002] A large number of horizontal lines are used in the PCB industry. This equipment uses a specific physical or chemical reaction in the wet process to achieve a series of purposes such as cleaning the board surface, removing glue, copper plating, etching, and roughening the board surface. In the PCB industry, every A specific function is called a certain treatment section, of which the brushing section is a common treatment section. etc. to provide better adhesion. [0003] In the grinding and brushing treatment section, in order to confirm whether the brush wheel is evenly brushed to the board surface, a wear scar test needs to be carried out. The usual method is: switch the machine to the wear scar test mode, use the bare copper plate without wiring, and place th...

Claims

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Application Information

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IPC IPC(8): G01B5/02
CPCG01B5/02
Inventor 程文君谢和全何顺
Owner 广东喜珍电路科技有限公司