CN114858081A - Visual detection device and method for controlling depth of deep hole - Google Patents
Visual detection device and method for controlling depth of deep hole Download PDFInfo
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- CN114858081A CN114858081A CN202210282325.8A CN202210282325A CN114858081A CN 114858081 A CN114858081 A CN 114858081A CN 202210282325 A CN202210282325 A CN 202210282325A CN 114858081 A CN114858081 A CN 114858081A
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- 238000001514 detection method Methods 0.000 title claims abstract description 77
- 230000000007 visual effect Effects 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 claims abstract description 98
- 229910052802 copper Inorganic materials 0.000 claims abstract description 40
- 239000010949 copper Substances 0.000 claims abstract description 40
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000013461 design Methods 0.000 claims abstract description 36
- 230000008569 process Effects 0.000 claims abstract description 8
- 238000005553 drilling Methods 0.000 claims description 39
- 238000011179 visual inspection Methods 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/22—Measuring arrangements characterised by the use of optical techniques for measuring depth
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention relates to a visual detection device for controlling the depth of a deep hole, which comprises a detection module arranged on the edge of a PCB production process, wherein the detection module is a visible hole module, and the visible hole module is manufactured by the following steps of S1: designing data, including visual hole design, and designing at least one visual hole at the position of the production process edge; designing a plurality of deep control holes corresponding to a plurality of tool diameters of a plate to be manufactured according to the plate to be manufactured, wherein the plurality of deep control holes are distributed at the edge of the visible hole by taking the center of the visible hole as the center; s2: and (4) reserving a copper surface, wherein a copper layer is reserved on each layer of board at the position of the edge of the production process. The depth-controlled visual detection device for the deep hole has the advantages of ingenious conception, process saving, efficiency and quality improvement and the like.
Description
Technical Field
The invention relates to the technical field of detection of deep hole control of a PCB (printed circuit board), in particular to a visual detection device and method for the depth of a deep hole control.
Background
In the Printed Circuit Board (PCB) industry, as products are continuously wired to a smaller number of wires and a design direction of a smaller number of layers is changed, the design of mechanical controlled deep holes is more and more conventional. In the PCB production process, the position (X, Y), the size (D) and the depth (Z) of a deep hole are controlled, the depth monitoring is very important, the depth is reduced to cause short circuit, the depth is increased to cause open circuit, and the two types of control can cause the scrapping of a circuit board.
Present depth detection in production process, normally after mechanical accuse deep-drilled hole is accomplished, carry out the analysis of cutting into slices, the analysis of cutting into slices can obtain accurate degree of depth result, but has the section of beating, and it is long consuming time in the section preparation, and partial section piece can be beaten out on the system board simultaneously, and this action is gone on the basis of losing a slice shipment unit, and the process is numerous and diverse and the consumptive material is big.
Disclosure of Invention
The invention provides a depth visual detection device for a controlled deep hole, which has the advantages of simplified process, high efficiency and low cost.
In order to achieve the above purpose, the following technical solutions are provided.
A visual detection device for controlling the depth of a deep hole comprises a detection module arranged on the edge of a PCB production process, wherein the detection module is a visible hole module, the manufacture of the visible hole module comprises,
s1: the design of the data, including,
visual hole design, at least one visual hole is designed at the position of the production process edge;
designing a plurality of deep control holes corresponding to a plurality of tool diameters of a plate to be manufactured according to the plate to be manufactured, wherein the plurality of deep control holes are distributed at the edge of the visible hole by taking the center of the visible hole as the center;
s2: and (4) reserving copper surfaces, wherein the copper surface design is reserved on each layer plate at the position of the edge of the production process.
The invention relates to a visual detection device for controlling the depth of a deep hole, which is mainly a detection module arranged on the edge of a production process, wherein the detection module is a visible hole module, the visible hole design is firstly carried out on the edge of the production process by data design, then a plurality of deep holes corresponding to a plurality of cutter diameters of a manufactured plate are designed by taking the hole diameter of the visible hole as a path according to the designed visible hole center, when the manufactured plate is manufactured, the copper surface design is reserved on each plate at the edge of the production process, the depth of the deep holes is conveniently observed or detected to a certain depth plate through the visible hole, the whole detection device has the advantages of ingenious conception, simple design and manufacture, great simplification of the procedures of slicing, tail hole drilling and the like in the prior art, and improvement of the working efficiency.
Furthermore, the aperture size of the visible hole is 5mm, so that a plurality of deep control holes can be distributed on the aperture of the visible hole, and the visible hole is convenient to observe and detect.
Furthermore, the number of the deep control holes is at least 1, and the plurality of deep control holes are uniformly distributed on the aperture of the visible hole along the center of the visible hole. Set up the accuse deep hole more than 1 on same visual hole limit footpath, can reduce the design and the preparation of visual hole module, and then reduce the space that detection module took, and the quantity of production technology limit auxiliary hole, can effectively reduce drilling quantity in the course of working, promote production drilling operating efficiency.
Further, the size and the number of the depth control holes correspond to the size and the number of the cutter diameter holes in the plate making process. The production board can meet the requirements of customers in board manufacturing, namely, the product quality is ensured.
Furthermore, a plurality of deep control holes with different sizes are sequentially arranged from small to large or from large to small. The control deep holes are arranged in a regular sequence, so that the processing of the control deep holes on a production plate process is facilitated, the processed control deep holes are observed and detected, and the manufacturing efficiency and the detection efficiency are improved.
Further, the copper surface of each layer plate is designed to be an all-copper surface or a copper point, the copper point design is designed only at the position where the deep hole is to be drilled, and the size of the copper point is larger than that of the deep hole. The copper surface design of each layer of plate is used for ensuring that the depth of the controlled deep hole is convenient to observe and detect through the visible hole, the copper surface can be designed as a full copper surface, and also can be designed as a copper point at a position corresponding to the controlled deep hole, so that the copper can be displayed at the controlled deep hole cut off by the visible hole after the visible hole is drilled.
A visual detection method for the depth of a deep hole control comprises the following steps,
a1: drilling the controlled deep holes, namely drilling the controlled deep holes on the production plate and the production process side in sequence by each cutter diameter according to the cutter arrangement sequence of the production plate until the controlled deep holes of all cutter diameters are drilled;
a2: the visual hole drilling treatment is carried out, namely the visual holes are drilled on the edge of the production process, and the drilling of the visual holes is carried out according to the data design in the step S1, so that the pore diameters of the visual holes are distributed at the central positions of all the controlled deep holes on the edge of the production process;
a3: and (4) depth control observation, namely observing the depth of each depth control hole in the visible hole through visual observation or detection equipment to obtain depth control data of the depth control holes.
The invention relates to a visual detection method for depth of a controlled deep hole, which utilizes a visual detection device for the controlled deep hole to drill the controlled deep hole on a production board and a production process edge in combination with data design, and finally drills the visual hole on the production process edge according to the data design after drilling of the controlled deep hole corresponding to all tool diameters is finished, and then detects the depth of each controlled deep hole cut by the visual hole through visual or detection equipment.
Further, the method for visually detecting the depth of the controlled deep hole comprises the following specific steps:
selecting the maximum or minimum cutter diameter, respectively drilling the depth-control holes on the production plate and the production process edge from the maximum or minimum cutter diameter, after the first cutter diameter finishes drilling the depth-control holes on the production plate and the production process edge, respectively drilling the depth-control holes on the production plate and the production process edge from the next cutter diameter according to the cutter arrangement sequence of the production plate, and repeating the steps until the depth-control holes on the production plate and the production process edge from all cutter diameters are finished, wherein the drilling of the depth-control holes on the production process edge is carried out according to the data design in the step S1.
Furthermore, the observation method of the depth-controlled observation is to observe the copper layer number in the numerical control deep hole. The copper surface design of each layer is convenient for control the observation and the detection of deep hole degree of depth, promotes detection efficiency.
Furthermore, the detection equipment is optical detection equipment or a laser depth detection device, and detection efficiency is effectively improved.
Compared with the prior art, the depth visual detection device and method for the controlled deep hole have the following beneficial effects:
firstly, a goods discharging unit is not lost, the detection device is designed at the production process side, and the goods discharging unit is not lost during the depth detection of the depth control hole;
secondly, the efficiency is high, the visual hole in the detection device is designed, visual detection can be realized, detection equipment can also be used for detection, and the detection efficiency is high;
thirdly, the occupied space is small, and the arrangement of one detection module can realize the detection of the controlled deep holes with various apertures, thereby effectively saving the space occupied by the detection module;
fourthly, the utilization rate of the production process is high, the detection module is arranged on the production process side and can replace a traditional slicing die payee and a tail hole module, one die has multiple purposes, the utilization rate of the production process side is effectively improved, meanwhile, the working procedures are effectively saved, specifically, the depth-controlled drill visual hole can be checked after drilling is finished, the time for rotating a plate, slicing and grinding the slice is effectively saved, and the production and detection efficiency is improved;
fifthly, the product quality is good, the visual holes are designed on each production plate, the sampling inspection or the full inspection can be carried out in the production process, and the quality of the delivered products is ensured to meet the requirements.
Drawings
Fig. 1 is a schematic plan view of 3 deep-hole control holes arranged in a visible hole module in the deep-hole depth control visible detection apparatus according to the present invention;
fig. 2 is a schematic plan view of 8 deep-hole control holes arranged in a visible hole module in the deep-hole depth control visible detection apparatus according to the present invention;
fig. 3 is a schematic plan view of 16 deep-control holes arranged in a visible hole module in the deep-control hole depth visible detection apparatus according to the present invention;
fig. 4 is a perspective view of a sight hole module having a controlled depth hole of the present invention.
Detailed Description
The following describes the depth-control visual inspection device of the present invention in further detail with reference to specific embodiments and the accompanying drawings.
Example 1
Referring to fig. 1 to 4, a non-limiting embodiment of the present invention is a depth-controlled visual inspection apparatus for a deep hole 2, comprising an inspection module disposed on a PCB production process edge, the inspection module being a visual hole 1 module, the manufacturing of the visual hole 1 module comprising,
s1: the design of the data, including,
designing a visual hole 1, wherein at least one visual hole 1 is designed at the position of the edge of the production process, and the pore size of the visual hole 1 is 5 mm;
designing a plurality of deep control holes 2 corresponding to a plurality of tool diameters of a plate to be manufactured according to the plate to be manufactured, wherein the plurality of deep control holes 2 are distributed at the edge of the visible hole 1 by taking the circle center of the visible hole 1 as the center;
s2: and (4) reserving copper surfaces, wherein the copper surface design is reserved on each layer plate at the position of the edge of the production process.
The invention relates to a visual detection device for depth of a controlled deep hole 2, which is mainly a detection module arranged on the edge of a production process, wherein the detection module is a visible hole 1 module, the visible hole 1 is designed on the edge of the production process in advance through data design, a plurality of controlled deep holes 2 corresponding to a plurality of tool diameters of a plate are designed by taking the hole diameter of the visible hole 1 as a path at the center of the designed visible hole 1, and when the production plate is manufactured, copper surface design is reserved on each plate at the edge of the production process, so that the depth of the controlled deep hole 2 is conveniently observed or detected to a few plates through the visible hole 1.
Referring to fig. 1, in a non-limiting embodiment of the present invention, in the embodiment, the number of the controlled deep holes 2 is 3, and the 3 controlled deep holes 2 are uniformly distributed on the aperture of the visible hole 1 along the center of the visible hole 1. Specifically, the arrangement mode of the controlled deep holes 2 is that the visible hole 1 is used as a clock dial, the controlled deep holes 2 with the 1 st cutter diameter are arranged from the 12 o' clock direction, then the controlled deep holes 2 with the 2 nd cutter diameter and the 3 rd cutter diameter are sequentially arranged anticlockwise or clockwise, and the included angle between the adjacent controlled deep holes 2 and the center connecting line of the visible hole 1 is 120 degrees. Of course, only 1 deep-control hole 2 can be designed according to the requirement, and at this time, the deep-control hole 2 can be arranged at any aperture position of the visible hole 1.
Referring to fig. 2, in a non-limiting embodiment of the present invention, in the embodiment, the number of the controlled-depth holes 2 is 8, and 3 controlled-depth holes 2 are uniformly distributed on the aperture of the visible hole 1 along the center of the visible hole 1. Specifically, the arrangement mode of the controlled deep holes 2 is that the visible hole 1 is used as a clock dial, the controlled deep holes 2 with the 1 st tool diameter are arranged from the 9 o' clock direction, then the controlled deep holes 2 with the 1 st tool diameter, the 2 nd tool diameter … … and the controlled deep holes 2 with the 8 th tool diameter are sequentially arranged anticlockwise or clockwise, and the included angle between the center connecting lines of the adjacent controlled deep holes 2 and the visible hole 1 is 45 degrees. The design of 8 kinds of cutter diameters is called as an 8-cutter visible hole 1 module.
Referring to fig. 3, in this embodiment, the number of the controlled-depth holes 2 is 16, and 3 controlled-depth holes 2 are uniformly distributed on the aperture of the visible hole 1 along the center of the visible hole 1. Specifically, the arrangement mode of the controlled deep holes 2 is that the visible hole 1 is used as a clock dial, the controlled deep holes 2 with the 1 st tool diameter are arranged from 6 o' clock direction, then the controlled deep holes 2 with the 1 st tool diameter, the 2 nd tool diameter … … and the controlled deep holes 2 with the 16 th tool diameter are sequentially arranged anticlockwise or clockwise, and the included angle between the adjacent controlled deep holes 2 and the center connecting line of the visible hole 1 is 22.5 degrees. The 16-cutter diameter design is called as a 16-cutter visual hole 1 module.
Referring to fig. 1 to 3, above-mentioned three kinds of technical scheme all set up a plurality of accuse deep holes 2 simultaneously on the footpath of 1 limit in same visual hole, and this kind of technical scheme sets up design and the preparation that can reduce visual hole 1 module, and then reduces the space that detection module took, and the quantity of production technology limit auxiliary hole, can effectively reduce drilling quantity in the course of working, promotes production drilling operating efficiency. Of course, the 1 st tool diameter corresponds to the arrangement of the controlled deep holes 2, and besides the 12 o ' clock direction, the 9 o ' clock direction and the 6 o ' clock direction, the arrangement can also be started at any point position on the aperture of the visible hole 1 according to actual needs.
Referring to fig. 1 to 3, the size and number of the controlled-depth holes 2 correspond to the size and number of the cutting holes on the plate, according to a non-limiting embodiment of the present invention. The production board can meet the requirements of customers in board manufacturing, namely, the product quality is ensured.
Referring to fig. 1 to 3, in a non-limiting embodiment of the present invention, a plurality of deep control holes 2 of different sizes are arranged in sequence from small to large or from large to small. And the control deep holes 2 are regularly and sequentially arranged, so that the processing of the control deep holes 2 in the production plate process is facilitated, the control deep holes 2 are observed and detected, and the manufacturing efficiency and the detection efficiency are improved.
Referring to fig. 1 to 3, in a non-limiting embodiment of the present invention, the copper surface of each layer is designed as an all-copper surface or a copper point, the copper point is designed only at the position where the deep control hole 2 is to be drilled, and the size of the copper point is larger than that of the deep control hole 2. The copper surface design of each layer of plate is used for ensuring that the depth of the controlled deep hole 2 is convenient to observe and detect through the visible hole 1, the copper surface can be designed as a full copper surface, and also can be designed as a copper point at a position corresponding to the controlled deep hole 2, so that the copper can be displayed at the controlled deep hole 2 cut off by the visible hole 1 after the visible hole 1 is drilled.
Example 2
Referring to fig. 1 to 4, a non-limiting embodiment of the present invention, a depth-controlled hole 2 visual detection method, a method for detecting a deep-controlled hole 2 on a production board by using the above-mentioned depth-controlled hole 2 visual detection device, includes the following steps,
a1: drilling the depth control holes 2, namely drilling the depth control holes 2 on the production plate and the production process side in sequence by each cutter diameter according to the cutter arrangement sequence of the production plate until the depth control drilling of all cutter diameters is completed;
a2: drilling the visible holes 1, namely drilling the visible holes 1 on the edge of the production process, wherein the drilling of the visible holes 1 is carried out according to the data design in the step S1, so that the pore diameters of the visible holes 1 are distributed at the central positions of the controlled deep holes 2 on the edge of the production process;
a3: and (4) depth control observation, namely observing the depth of each depth control hole 2 in the visible hole 1 through visual observation or detection equipment to obtain depth control data of the depth control holes 2, wherein the detection equipment is optical detection equipment or a laser depth detection device, and the detection efficiency is effectively improved.
The invention relates to a visual detection method for the depth of a controlled deep hole 2, which utilizes a visual detection device for the controlled deep hole 2 to firstly drill the controlled deep hole 2 on a production board and a production process edge in combination with data design, finally drills a visual hole 1 on the production process edge according to the data design after drilling of the controlled deep hole 2 corresponding to all tool diameters is completed, and then detects the depth of each controlled deep hole 2 cut by the visual hole 1 through visual or detection equipment.
Referring to fig. 1 to 4, according to a non-limiting embodiment of the present invention, the drilling process of the controlled deep hole 2 in the depth visual detection method of the controlled deep hole 2 includes the following specific steps:
selecting the maximum or minimum tool diameter, respectively drilling the depth control holes 2 on the production plate and the production process edge from the maximum or minimum tool diameter, after the first tool diameter completes drilling the depth control holes 2 on the production plate and the production process edge, according to the tool arrangement sequence of the production plate, performing depth control drilling of the next tool diameter on the production plate and the production process edge from the next tool diameter, and repeating the steps until the depth control drilling of all tool diameters on the production plate and the production process edge is completed, wherein the drilling of the depth control holes 2 on the production process edge is performed according to the data design in the step S1.
Referring to fig. 1 to 4, in a non-limiting embodiment of the present invention, the depth-controlled observation method is to observe the copper layer number in the deep hole 2 by numerical control. The copper face design of each layer is convenient for control 2 observation and detection of degree of depth in the deep hole, promotes detection efficiency.
The above embodiments are only specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications are possible without departing from the inventive concept, and such obvious alternatives fall within the scope of the invention.
Claims (10)
1. The utility model provides a visual detection device of accuse deep hole degree of depth, includes the detection module who sets up on PCB production technology edge, its characterized in that: the detection module is a visible hole module, the manufacture of the visible hole module comprises,
s1: the design of the data, including,
visual hole design, at least one visual hole is designed at the position of the production process edge;
designing a plurality of deep control holes corresponding to a plurality of tool diameters of a plate to be manufactured according to the plate to be manufactured, wherein the plurality of deep control holes are distributed at the edge of the visible hole by taking the center of the visible hole as the center;
s2: and (4) reserving copper surfaces, wherein the copper surface design is reserved on each layer plate at the position of the edge of the production process.
2. The visual inspection device of controlled deep hole depth of claim 1, characterized in that the aperture size of the visual hole is 5 mm.
3. The visual detection device of controlled deep hole depth of claim 2, characterized in that the quantity of controlled deep hole is at least 1, and more than 1 controlled deep hole is evenly distributed on the visual hole aperture along the visual hole center.
4. The visual inspection device for depth of controlled-depth holes according to claim 3, wherein the size and number of the controlled-depth holes correspond to the size and number of the cutter diameter holes on the production plate.
5. The visual inspection device for depth of controlled deep hole according to claim 4, wherein the plurality of controlled deep holes of different sizes are arranged in sequence from small to large or from large to small.
6. The visual inspection device of controlled deep hole depth of any one of claims 1 to 5, characterized in that the copper surface of each layer is designed to be an all copper surface or a copper point, the copper point is designed only at the position where the controlled deep hole is to be drilled, and the size of the copper point is larger than that of the controlled deep hole.
7. A visual detection method for the depth of a controlled deep hole, which is characterized in that the method for detecting the controlled deep hole on a production plate by using the visual detection device for the controlled deep hole of any claim from 1 to 6 comprises the following steps,
a1: drilling the controlled deep holes, namely drilling the controlled deep holes on the production plate and the production process side in sequence by each cutter diameter according to the cutter arrangement sequence of the production plate until the controlled deep holes of all cutter diameters are drilled;
a2: the visual hole drilling treatment is carried out, namely the visual holes are drilled on the edge of the production process, and the drilling of the visual holes is carried out according to the data design in the step S1, so that the pore diameters of the visual holes are distributed at the central positions of all the controlled deep holes on the edge of the production process;
a3: and (4) depth control observation, namely observing the depth of each depth control hole in the visible hole through visual observation or detection equipment to obtain depth control data of the depth control holes.
8. The visual detection method for the depth of the controlled deep hole according to claim 7, characterized in that the drilling process of the controlled deep hole comprises the following specific steps:
selecting the maximum or minimum tool diameter, respectively finishing the deep hole control drilling on the production plate and the production process edge by using the maximum or minimum tool diameter, after the first tool diameter finishes the deep hole control drilling on the production plate and the production process edge, performing the next tool diameter according to the tool arrangement sequence of the production plate, respectively finishing the deep hole control drilling on the production plate and the production process edge, and repeating the steps until the deep hole control drilling on the production plate and the production process edge is finished, wherein the drilling of the deep hole control drilling on the production process edge is performed according to the data design in the step S1.
9. The visual detection method for the depth of the depth-controlled hole according to claim 8, wherein the observation method for the depth-controlled observation is observation through the number of copper layers in the numerical control deep hole.
10. The visual detection method for the depth of a controlled deep hole according to claim 9, characterized in that the detection equipment is optical detection equipment or a laser depth detection device.
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| CN202210282325.8A CN114858081A (en) | 2022-03-22 | 2022-03-22 | Visual detection device and method for controlling depth of deep hole |
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| CN202210282325.8A CN114858081A (en) | 2022-03-22 | 2022-03-22 | Visual detection device and method for controlling depth of deep hole |
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| JP2001272399A (en) * | 2000-01-21 | 2001-10-05 | Wako Pure Chem Ind Ltd | Mult-item test tool, manufacturing method therefor, and test tool measuring device |
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| JP2015003327A (en) * | 2013-06-19 | 2015-01-08 | キヤノン株式会社 | Laser processing device, substrate processing method, and method for production of substrate |
| CN104567611A (en) * | 2013-10-25 | 2015-04-29 | 北大方正集团有限公司 | Method for detecting backdrilling depth |
| CN104582288A (en) * | 2015-01-14 | 2015-04-29 | 景旺电子科技(龙川)有限公司 | PCB back drilling plate back drilling depth detecting method |
-
2022
- 2022-03-22 CN CN202210282325.8A patent/CN114858081A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001272399A (en) * | 2000-01-21 | 2001-10-05 | Wako Pure Chem Ind Ltd | Mult-item test tool, manufacturing method therefor, and test tool measuring device |
| CN102878968A (en) * | 2012-09-20 | 2013-01-16 | 湖北三江航天险峰电子信息有限公司 | Online measurement method for measuring size of large deep blind hole |
| JP2015003327A (en) * | 2013-06-19 | 2015-01-08 | キヤノン株式会社 | Laser processing device, substrate processing method, and method for production of substrate |
| CN104567611A (en) * | 2013-10-25 | 2015-04-29 | 北大方正集团有限公司 | Method for detecting backdrilling depth |
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