CN103747617A - PCB expansion compensation method - Google Patents
PCB expansion compensation method Download PDFInfo
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- CN103747617A CN103747617A CN201310722470.4A CN201310722470A CN103747617A CN 103747617 A CN103747617 A CN 103747617A CN 201310722470 A CN201310722470 A CN 201310722470A CN 103747617 A CN103747617 A CN 103747617A
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- pcb board
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- harmomegathus
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- pcb
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0271—Arrangements for reducing stress or warp in rigid printed circuit boards, e.g. caused by loads, vibrations or differences in thermal expansion
Abstract
The invention discloses a PCB expansion compensation method which comprises the following steps: a PCB is divided into a plurality of areas; at least two reference targets are arranged on each zone; and after pressing of the PCB, actual positions of the reference targets on each zone are measured and are compared with theoretical positions, and expansion values of each zone are converted. According to the PCB expansion compensation method, the PCB is divided into a plurality of zones before being pressed, at least two reference targets are arranged on each zone; actual positions of the reference targets on each zone of the PCB are measured after pressing and are compared with theoretical positions so as to obtain expansion values of different zones of the PCB. The PCB has inconsistent expansions at different positions. Through zonal measurement, expansion deviation of the PCB can be reduced greatly. By obtaining the expansion values of each zone, zonal compensation is carried out on each follow-up process, and production errors of follow-up processes are reduced. Thus, accuracy of manufacturing the PCB is raised.
Description
Technical field
The present invention relates to pcb board manufacturing technology, particularly a kind of pcb board harmomegathus compensation method.
Background technology
Development along with electron trade, printed circuit board, be called for short pcb board, required precision is more and more higher, for pcb board manufacture, it is its critical technological point that harmomegathus is controlled, and each manufacturer can carry out whole harmomegathus compensation to pcb board conventionally, but the pcb board harmomegathus deviation that this method is produced is larger, causes pcb board precision low.
Summary of the invention
Based on this, the invention reside in the defect that overcomes prior art, the compensation method of a kind of pcb board harmomegathus is provided, be intended to reduce the harmomegathus deviation of pcb board, improve its accuracy of manufacture.
Its technical scheme is as follows:
The compensation method of pcb board harmomegathus, comprises the steps:
Pcb board is divided into a plurality of regions;
At least two benchmark targets are set on each region;
To after pcb board pressing, measure basic target target physical location on its each region, and compare with theoretical position, converse the harmomegathus value in each region;
According to the harmomegathus value in each region, follow-up each operation is carried out to subregion compensation.
Preferably, take pcb board outermost layer as datum level, setting its length direction is X-direction, and Width is Y-direction, and two benchmark targets are set on each region, and the coordinate figure of two benchmark target X-directions, the coordinate figure of Y-direction are all not identical.
Preferably, take pcb board outermost layer as datum level, setting its length direction is X-direction, and Width is Y-direction, and three benchmark targets are set on each region, and the coordinate figure of three benchmark target X-directions, the coordinate figure of Y-direction are entirely not identical.
Preferably, take pcb board outermost layer as datum level, setting its length direction is X-direction, and Width is Y-direction, and more than three benchmark targets is set on each region, and the coordinate figure of each benchmark target X-direction, the coordinate figure of Y-direction are entirely not identical.
Preferably, four benchmark targets are all set on each region, four benchmark targets are arranged on each edges of regions.
Preferably, the benchmark target on each region is arranged on certain one deck of described pcb board or certain on which floor.
Preferably, in above-mentioned steps, according to the harmomegathus value in each region, follow-up each operation is carried out after subregion compensation, the production Piece file mergence of the same operation by after regional compensation is become to a general act storage.
Below the advantage of aforementioned techniques scheme or principle are described:
The compensation method of above-mentioned pcb board harmomegathus, pcb board before pressing is divided into a plurality of regions, and at least two benchmark targets are set on each region, measure basic target target physical location on each region of pcb board after pressing, and compare with theoretical position, thereby draw the harmomegathus value of pcb board zones of different, PCB is inconsistent in the harmomegathus of its diverse location, by a minute region measurement, can greatly reduce the harmomegathus deviation of pcb board, by the harmomegathus value in each region of drawing, follow-up each operation is carried out to subregion compensation, reduce the production error of subsequent handling, thereby improve the accuracy of manufacture of pcb board.
Accompanying drawing explanation
Fig. 1 is the flow chart of the pcb board harmomegathus compensation method described in the embodiment of the present invention;
Fig. 2 is the pcb board that is divided into a plurality of regions described in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated:
As shown in Figure 1, the compensation method of a kind of pcb board harmomegathus, comprises the steps:
S100: pcb board is divided into a plurality of regions;
S200: at least two benchmark targets are set on each region;
S300: will measure basic target target physical location on its each region after pcb board pressing, and compare with theoretical position, converse the harmomegathus value in each region;
S400: according to the harmomegathus value in each region, follow-up each operation is carried out to subregion compensation.
The compensation method of above-mentioned pcb board harmomegathus, pcb board before pressing is divided into a plurality of regions, and at least two benchmark targets are set on each region, measure basic target target physical location on each region of pcb board after pressing, and compare with theoretical position, thereby draw the harmomegathus value of pcb board zones of different, PCB is inconsistent in the harmomegathus of its diverse location, by a minute region measurement, can greatly reduce the harmomegathus deviation of pcb board, by the harmomegathus value in each region of drawing, follow-up each operation is carried out to subregion compensation, reduce the production error of subsequent handling, thereby improve the accuracy of manufacture of pcb board.
As shown in Figure 2, in the present embodiment, pcb board 100 outermost layers of take before pressing are datum level, setting its length direction is X-direction, Width is Y-direction, is provided with four benchmark targets 110 on each region, and the coordinate figure of each benchmark target X-direction, the coordinate figure of Y-direction are entirely not identical.Such four benchmark targets 110 can be determined a scope, be convenient to determine the harmomegathus value in this region of pcb board after pressing, harmomegathus value major parameter has: position deviation, angular deviation, dimensional discrepancy, the conversion of harmomegathus value is mainly by X-Ray Quadratic Finite Element, the physical location of four benchmark targets 110 that measure and theoretical position to be compared and drawn, also can be by optical secondary unit, optics/mechanical three-dimensional measuring instrument is realized, then according to the harmomegathus value in each region, according to certain offset rule, follow-up each operation is carried out to subregion compensation, follow-up each operation comprises drilling, outer graphics, milling band, V-CUT etc., the offset rule that each region subsequent handling compensates is existing in current industry, be widely used in CCD rig, the linear compensation principle of Quadratic Finite Element measuring instrument, compensate the displacement of each region subsequent handling, angle, size, can pass through X-Ray Quadratic Finite Element measuring instrument, PC or manual operations realize.
The present embodiment is divided into nine regions by pcb board 100, the method that pcb board 100 is carried out to region division mainly contains two kinds: one, for X, Y two direction grid types are divided, each area size after division is identical and area is little as far as possible, but the region marking off needs to set benchmark target 110, conventionally at 2～4inch; Two, according to pcb board each several part harmomegathus precision, control and require difference and zoning, after dividing, each region shape and size are determined according to the actual requirements.The shape of benchmark target 110 can be arranged to circle, annular, ellipse, crux, rectangle, equilateral triangle, rice font and complementary angle degree symmetric figure thereof, so that determine this benchmark target 110 center, thereby facilitate the physical location of Measurement accuracy benchmark target 110.Described benchmark target 110 can be the figure that each edges of regions is added on pcb board, also can select in pcb board one deck Huo Mou basic unit the existing figure that can be used as target as benchmark target.
For convenience of pcb board 100 subsequent handlings are operated, reduce working strength, in above-mentioned steps, according to the harmomegathus value in each region, follow-up each operation is carried out after subregion compensation, the production Piece file mergence of the same operation by after regional compensation is become to a general act storage.It is realized basic principle flow process and comprises: the operation that unified zero-bit → merging benchmark target and operation file to be compensated → treat each region, compensation operation zoning → compensate according to benchmark target be set is produced the operation in each region of file → merge and produced file and generate the preservation of general act → numbering.By general act being imported in corresponding equipment, just can conveniently carry out subsequent handling as drilling, outer graphics, milling band, V-CUT etc. like this.
In the present embodiment, on each region, be all provided with 110, four benchmark targets 110 of four benchmark targets and be arranged on each edges of regions.Make so the definite scope of four benchmark targets 110 consistent with the area size of dividing in advance, be convenient to follow-up each region be compensated.
Benchmark target 110 on each region is arranged on certain one deck of described pcb board 100 or certain on which floor.Because pcb board is generally multilayer, its each layer is controlled and is required to have nothing in common with each other harmomegathus precision, if the required precision of certain layer is high, benchmark target 110 can be set on this layer, draw the harmomegathus value of this layer, greatly reduce the harmomegathus deviation of this layer, thereby improve the production precision of this layer of upper subsequent technique, also which floor benchmark target 110 can be all set at certain on.
With reference to Fig. 2, take pcb board outermost layer as datum level, setting its length direction is X-direction, and Width is Y-direction, and two benchmark targets are set on each region, the coordinate figure of two benchmark target X-directions, the coordinate figure of Y-direction are all not identical, require two benchmark targets not on same horizontal or longitudinal straight line, like this by the line of two basic targets, be defined as the diagonal in this region, thereby can determine the scope in this region, be convenient to follow-up each region be compensated.
With reference to Fig. 2, take pcb board outermost layer as datum level, setting its length direction is X-direction, Width is Y-direction, and three benchmark targets are set on each region, and the coordinate figure of three benchmark target X-directions, the coordinate figure of Y-direction are entirely not identical, require three benchmark targets not on same horizontal or longitudinal straight line, like this by the line of three basic targets, thereby can roughly determine the scope in this region, be convenient to follow-up each region be compensated.
Pass through the present embodiment, can realize inconsistent subsequent handling processing and the poor problem of image aligning accuracy causing of diverse location harmomegathus of the pcb board of different size model, different batches, different sequence numbers, effectively lifting hole to conductor, appearance profile to unit figure, welding resistance Aligning degree, V-CUT line be to the technological ability of the aspects such as unit figure, can greatly expand pcb board in the application in the fields such as high level, accurate circuit, little spacing.
The above embodiment has only expressed the specific embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (7)
1. the compensation method of pcb board harmomegathus, is characterized in that, comprises the steps:
Pcb board is divided into a plurality of regions;
At least two benchmark targets are set on each region;
To after pcb board pressing, measure basic target target physical location on its each region, and compare with theoretical position, converse the harmomegathus value in each region;
According to the harmomegathus value in each region, follow-up each operation is carried out to subregion compensation.
2. pcb board harmomegathus according to claim 1 compensation method, is characterized in that, take pcb board outermost layer as datum level, setting its length direction is X-direction, Width is Y-direction, and two benchmark targets are set on each region, and the coordinate figure of two benchmark target X-directions, the coordinate figure of Y-direction are all not identical.
3. pcb board harmomegathus according to claim 1 compensation method, is characterized in that, take pcb board outermost layer as datum level, setting its length direction is X-direction, Width is Y-direction, and three benchmark targets are set on each region, and the coordinate figure of three benchmark target X-directions, the coordinate figure of Y-direction are entirely not identical.
4. pcb board harmomegathus according to claim 1 compensation method, it is characterized in that, take pcb board outermost layer as datum level, setting its length direction is X-direction, Width is Y-direction, more than three benchmark targets is set on each region, and the coordinate figure of each benchmark target X-direction, the coordinate figure of Y-direction are entirely not identical.
5. pcb board harmomegathus according to claim 4 compensation method, is characterized in that, four benchmark targets are all set on each region, and four benchmark targets are arranged on each edges of regions.
6. according to the pcb board harmomegathus compensation method described in claim 1～5 any one, it is characterized in that, the benchmark target on each region is arranged on certain one deck of described pcb board or certain on which floor.
7. pcb board harmomegathus according to claim 6 compensation method, it is characterized in that, in above-mentioned steps, according to the harmomegathus value in each region, follow-up each operation is carried out after subregion compensation, the production Piece file mergence of the same operation by after regional compensation is become to a general act storage.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310722470.4A CN103747617B (en) | 2013-12-24 | 2013-12-24 | PCB expansion compensation method |
| PCT/CN2014/094348 WO2015096665A1 (en) | 2013-12-24 | 2014-12-19 | Compensation method for pcb expansion and contraction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310722470.4A CN103747617B (en) | 2013-12-24 | 2013-12-24 | PCB expansion compensation method |
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| CN103747617A true CN103747617A (en) | 2014-04-23 |
| CN103747617B CN103747617B (en) | 2017-02-15 |
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| WO2015096665A1 (en) * | 2013-12-24 | 2015-07-02 | 广州兴森快捷电路科技有限公司 | Compensation method for pcb expansion and contraction |
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| CN103747617B (en) | 2017-02-15 |
| WO2015096665A1 (en) | 2015-07-02 |
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