Device and method for measuring deformation of circuit board
A technology of measuring device and measuring method, applied in the direction of measuring device, instrument, etc., can solve the problems of measurement error, circuit board deformation, reduction of practical value, etc.
Active Publication Date: 2020-10-20
GUANGZHOU XIAOPENG MOTORS TECH CO LTD
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Problems solved by technology
Since the circuit board itself is not an absolute plane, it is necessary to ensure that the non-discrete points on the circuit board, that is, the line or surface on the circuit board fits with a plane, which will inevitably cause new deformation of the circuit board, which will bring new problems to the measurement work. error
Moreover, electronic components have been mounted on the PCBA, the surface of the PCBA is uneven, and components such as capacitors and radiators that are larger than the substrate itself will be installed, so it is difficult for the PCBA to contact the marble platform. This patented technology Practically difficult to implement on PCBA
At the same time, due to the new deformation brought by the patented technology during the measurement process, it may cause damage to the circuit on the PCBA, which reduces the practical value of the patented technology
Method used
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Embodiment Construction
[0039] figure 1 Shown is a common construction for a circuit board substrate. The circuit board substrate 100 is generally rectangular, and each corner is processed to obtain a positioning hole 200, but the shape of the circuit board substrate 100 does not affect the application of the present invention. Whether it is a circuit board substrate, a PCB or a PCBA processed on the basis of the substrate, the invention can be used for measurement. The present invention is aimed at figure 1 A common circuit board is shown for illustration, and those skilled in the art can apply the present invention to circuit boards of other shapes and configurations without inventive effort.
[0040] against figure 1 For the circuit board shown, the present invention selects the positioning points as three positioning holes on the circuit board, and selects the measuring point as the other positioning hole. In the case of not affecting the use, the positioning point can also be selected as oth...
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The invention discloses a device and method for measuring the deformation of a circuit board. The device includes an equipment platform, an electronic range finder, a control module, a plurality of thimbles and a plurality of fixed pressing blocks. The plurality of thimbles are vertically installed on the equipment On the platform, the thimble is used to contact the positioning point on the circuit board, thereby carrying the circuit board; the number and position of the fixed pressing blocks are corresponding to the thimble, and the fixed pressing blocks are used to align each Apply force at the position of the positioning point, so that the circuit board is pressed on the thimble; the output end of the electronic range finder is connected to the input end of the control module; the control module is used to perform the measurement data of the electronic range finder Processing, calculating the degree of deformation of the circuit board. The device of the invention has simple structure, stable performance, is easy to realize through automation, and can adapt to various circuit boards with different structures. The invention is widely used in the technical field of printed circuit boards.
Description
technical field [0001] The invention relates to the technical field of printed circuit boards, in particular to a device and method for measuring deformation of a circuit board. Background technique [0002] Terminology Explanation [0003] PCBA: The abbreviation of Printed Circuit Board Assembly (Printed Circuit Board Assembly), generally refers to the circuit board whose surface has been mounted with electronic components; [0004] PCB: The abbreviation of Printed Circuit Board. As the symmetry of PCBA, it refers to the circuit board with no electronic components mounted on the surface. [0005] PCBA is an important part of electronic equipment, and the quality of PCBA is directly related to the quality of electronic equipment. In practice, one of the most common problems of PCBA is that the substrate is bent and deformed, leading to failures or hidden dangers such as component breakage, solder joint drop-off, and line disconnection, which seriously affects the use of el...
Claims
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IPC IPC(8): G01B21/32
CPCG01B21/32
Inventor 杨坤兴
Owner GUANGZHOU XIAOPENG MOTORS TECH CO LTD