CN104259502B - The short slotted eye processing method of pcb board - Google Patents
The short slotted eye processing method of pcb board Download PDFInfo
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- CN104259502B CN104259502B CN201410383198.6A CN201410383198A CN104259502B CN 104259502 B CN104259502 B CN 104259502B CN 201410383198 A CN201410383198 A CN 201410383198A CN 104259502 B CN104259502 B CN 104259502B
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- slotted eye
- short
- short slotted
- length direction
- pcb board
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/16—Perforating by tool or tools of the drill type
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Abstract
The invention discloses a kind of short slotted eye processing method of pcb board preventing in the short slotted eye process middle slot bore deformation skew of slotted eye minor axis < 1.0 ㎜, it is characterized in that it comprises the following steps: (1) in the corresponding edge of waiting out short slotted eye length direction, to bore respectively two bullports, the aperture of described bullport is (slotted eye minor axis-0.1)/2 ㎜～(slotted eye minor axis-0.25) 0 ㎜, the anticlockwise angle α of the line of centres of two bullports and slotted eye length direction center line is 10 °～35 °, the distance at described bullport and short slotted eye edge is 1 ㏕～3 ㏕, (2) the drill point that adopts diameter to equal slotted eye minor axis bores a hole in short slotted eye one end along its length, then bores a hole at the corresponding other end, two holes respectively with the edge inscribe of short slotted eye length direction, (3) then fold and bore along the length direction of short slotted eye, the present invention is connected with effect and has avoided the quality problem such as short slotted eye distortion in the short slotted eye process of path, improve PCB? the finished product yield of plate, has reduced enterprise's production cost.
Description
Technical field
The present invention relates to a kind of processing method of pcb board slotted eye, the specifically short slotted eye processing method of pcb board, particularly relates to the short slotted eye processing method of pcb board of a kind of slotted eye minor axis < 1.0 ㎜ and flute length/groove footpath < 2.
Background technology
In the slotted eye processing of pcb board (printed circuit board (PCB)), particularly in the time of the short slotted eye of 2 times of processing flute length/groove footpath <, generally by forming after the overlapping boring of multiple circular holes, the drill point that adopts diameter to equal slotted eye minor axis while boring bores a hole in short slotted eye one end along its length, bore a hole at the corresponding other end again, then along folded boring on the length direction of short slotted eye. due in the time that the other end of short slotted eye is holed, bored one end of short slotted eye, drill point cannot be borrowed power, when drill point clockwise High Rotation Speed (50000 revs/min～60000 revs/min), apex point knife face produces torsion left, and torsion is greater than the resistance of base material to drill point, thereby cause not boring substrate regions drill point is produced to the active force that the right is greater than the left side, thereby make the short slotted eye distortion after processing, along 5 °～15 ° left and right of skew counterclockwise, center of slotted eye length direction, in the time of slotted eye minor axis < 1.0 ㎜, its phenomenon is more outstanding, while particularly processing at the same time multi-disc plate, base plate skew is more serious, cause the finished product yield of pcb board low, increase production cost.
To this, have in the time making boring formula, in advance short slotted eye is carried out to angle compensation to the right, but, in the time of folded boring, because base material remainder is less, also less to apex point active force, the default location after angle compensation can be dropped in the lower brill position of apex point, easily occurs broad bean type slotted eye (special-shaped slotted eye).
Application number is 201010509170.4, the applying date is 2010.10.14, denomination of invention be the preparation method of the short slotted eye of a kind of pcb board Patent Application Publication a kind of method that can effectively avoid the quality problem such as distortion, groove in short slotted eye process is large, groove is little, in the two edges of the length direction of slotted eye figure, bore respectively a guide hole, and guide hole diameter is less than the half of slotted eye major diameter, the brill that then adopts diameter to equal slotted eye minor axis on guide hole basis is chewed the boring that superposes. Equally, during due to folded boring, its slotted eye bored on one side, drill point cannot be borrowed power, when drill point clockwise High Rotation Speed (50000 revs/min～60000 revs/min), do not bore substrate regions drill point is produced to the active force that the right is greater than the left side, still cause the short slotted eye after processing to deform, along 5 °～15 ° left and right of skew counterclockwise, center of slotted eye length direction. Simultaneously, due to the edge inscribe of its guide hole and short slotted eye, after first circular hole of short slotted eye has bored, while boring under second circular hole, base material can produce the active force under being greater than to drill point at short slotted eye length direction, cause the short slotted eye length can be than short 0.1 about ㎜ of former design length, thereby guide hole cannot be covered completely, make short slotted eye edge occur not boring completely the salient point (being guide hole position) of falling.
Summary of the invention
The object of this invention is to provide a kind of short slotted eye processing method of pcb board preventing in the short slotted eye process middle slot bore deformation skew of slotted eye minor axis < 1.0 ㎜.
The present invention adopts following technical scheme to realize its goal of the invention, the short slotted eye processing method of a kind of pcb board, and it comprises the following steps:
(1) in the corresponding edge of waiting out short slotted eye length direction, bore respectively two bullports, slotted eye minor axis < 1.0 ㎜ of described short slotted eye and flute length/groove footpath < 2, the aperture of described bullport is (slotted eye minor axis-0.1)/2 ㎜～(slotted eye minor axis-0.25) ㎜, the anticlockwise angle α of the line of centres of two bullports and slotted eye length direction center line is 10 °～35 °, and the distance at described bullport and short slotted eye edge is 1 ㏕～3 ㏕;
(2) the drill point that adopts diameter to equal slotted eye minor axis bores a hole in short slotted eye one end along its length, then bores a hole at the corresponding other end, two holes respectively with the edge inscribe of short slotted eye length direction;
(3) then fold and bore along the length direction of short slotted eye.
The present invention is in the time of flute length/groove footpath≤1.3, and described α angle is preferably 29 °～35 °.
The present invention is in the time of 1.3 < flute length/groove footpath≤1.5, and described α angle is preferably 17 °～28 °.
The present invention is in the time of 1.5 < flute length/groove footpath < 2, and described α angle is preferably 10 °～16 °.
The aperture of bullport of the present invention is preferably slotted eye minor axis/2 ㎜.
The distance at bullport of the present invention and short slotted eye edge is preferably 2 ㏕.
Folded brill of the present invention is the length direction along short slotted eye, alternately folds and bores toward center from two ends.
Owing to adopting technique scheme, the present invention has realized goal of the invention preferably, by the oblique bullport that arranges in the both sides at short slotted eye length direction center line, the quality problem such as the short slotted eye distortion in the short slotted eye process of path are effectively avoided, the finished product yield that has improved pcb board, has reduced enterprise's production cost.
Brief description of the drawings
Fig. 1 is the short slotted eye work flow of prior art schematic diagram;
Fig. 2 is the short slotted eye work flow schematic diagram while in advance short slotted eye being carried out to angle compensation in prior art;
Fig. 3 is the short slotted eye work flow schematic diagram while guide hole being set in prior art;
Fig. 4 is short slotted eye work flow schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1, in the processing of short slotted eye, be generally by forming after the overlapping boring of multiple circular holes, the drill point that adopts diameter to equal slotted eye minor axis while boring bores a hole in short slotted eye one end along its length, bore a hole at the corresponding other end again, then along folded boring on the length direction of short slotted eye. due in the time that the other end of short slotted eye is holed, bored one end of short slotted eye, drill point cannot be borrowed power, when drill point clockwise High Rotation Speed (50000 revs/min～60000 revs/min), apex point knife face produces torsion left, and torsion is greater than the resistance of base material to drill point, thereby cause not boring substrate regions drill point is produced to the active force that the right is greater than the left side, thereby make the short slotted eye distortion after processing, along 5 °～15 ° left and right of skew counterclockwise, center of slotted eye length direction, in the time of slotted eye minor axis < 1.0 ㎜, its phenomenon is more outstanding, while particularly processing at the same time multi-disc plate, base plate skew is more serious.
As shown in Figure 2, add the distortion in man-hour for solving short slotted eye, have in the time making boring formula, in advance short slotted eye is carried out to angle compensation to the right, still, in the time of folded boring, because base material remainder is less, also less to apex point active force, the default location after angle compensation can be dropped in the lower brill position of apex point, easily occurs broad bean type slotted eye (special-shaped slotted eye).
As shown in Figure 3, add the distortion in man-hour for solving short slotted eye, application number is 201010509170.4, the applying date is 2010.10.14, denomination of invention is bored respectively a guide hole for the patent application of the preparation method of the short slotted eye of a kind of pcb board provides in a kind of two edges of the length direction at slotted eye figure, and guide hole diameter is less than the half of slotted eye major diameter, the brill that then adopts diameter to equal slotted eye minor axis on guide hole basis is chewed the boring that superposes. Equally, during due to folded boring, its slotted eye bored on one side, drill point cannot be borrowed power, when drill point clockwise High Rotation Speed (50000 revs/min～60000 revs/min), do not bore substrate regions drill point is produced to the active force that the right is greater than the left side, still cause the short slotted eye after processing to deform, along 5 °～15 ° left and right of skew counterclockwise, center of slotted eye length direction. Simultaneously, due to the edge inscribe of its guide hole and short slotted eye, after first circular hole of short slotted eye has bored, while boring under second circular hole, base material can produce the active force under being greater than to drill point at short slotted eye length direction, cause the short slotted eye length can be than short 0.1 about ㎜ of former design length, thereby guide hole cannot be covered completely, make short slotted eye edge occur not boring completely the salient point (being guide hole position) of falling.
Embodiment 1:
As shown in Figure 4, the short slotted eye processing method of a kind of pcb board, it comprises the following steps:
(1) in the corresponding edge of waiting out short slotted eye length direction, bore respectively two bullports, slotted eye minor axis < 1.0 ㎜ of described short slotted eye and flute length/groove footpath < 2, the aperture of described bullport is (slotted eye minor axis-0.1)/2 ㎜～(slotted eye minor axis-0.25) ㎜, the anticlockwise angle α of the line of centres of two bullports and slotted eye length direction center line is 10 °～35 °, and the distance at described bullport and short slotted eye edge is 1 ㏕～3 ㏕;
The aperture of bullport of the present invention is preferably slotted eye minor axis/2 ㎜.
The distance at bullport of the present invention and short slotted eye edge is preferably 2 ㏕.
(2) the drill point that adopts diameter to equal slotted eye minor axis bores a hole in short slotted eye one end along its length, then bores a hole at the corresponding other end, two holes respectively with the edge inscribe of short slotted eye length direction;
(3) then fold and bore along the length direction of short slotted eye.
Folded brill of the present invention is the length direction along short slotted eye, alternately folds and bores toward center from two ends.
The present invention is in the time of 1.3 < flute length/groove footpath≤1.5, and described α angle is preferably 17 °～28 °.
The present embodiment slotted eye minor axis is 0.6 ㎜, slotted eye major diameter/slotted eye minor axis is 1.5, the aperture of bullport is preferably 0.3 ㎜, the distance at described bullport and short slotted eye edge is preferably 2 ㏕, as shown in Figure 4, one hole is centered close to the lower left quarter of short slotted eye length direction, and another hole is centered close to the upper right quarter of short slotted eye length direction, and the anticlockwise angle α of the line of centres of two bullports and slotted eye length direction center line is 17 °.
Add man-hour, make boring formula according to designing requirement, the formula of holing imports drilling machine. Drilling machine carries out bore operation by instruction, first processes bullport, then one end of the short slotted eye of subdrilling, then bore a circular hole at the other end of short slotted eye, then, along the length direction of short slotted eye, alternately fold and bore from two ends toward middle.
Owing to being provided with certain distance (the present embodiment is 2 ㏕) between bullport and short slotted eye edge, while making to bore under the second hole, can not produce at short slotted eye edge and not bore salient point (bullport position), can ensure to play again the effect of the short slotted eye of correcting.
Embodiment 2:
The present invention is in the time of flute length/groove footpath≤1.3, and described α angle is preferably 29 °～35 °.
The present embodiment slotted eye minor axis is 0.6 ㎜, and slotted eye major diameter/slotted eye minor axis is 1.3, and the aperture of bullport is preferably 0.3 ㎜, and the anticlockwise angle α of the line of centres of two bullports and slotted eye length direction center line is 31 °.
Remaining with embodiment 1.
Embodiment 3:
The present invention is in the time of 1.5 < flute length/groove footpath < 2, and described α angle is preferably 10 °～16 °.
The present embodiment slotted eye minor axis is 0.6 ㎜, and slotted eye major diameter/slotted eye minor axis is 1.8, and the aperture of bullport is preferably 0.3 ㎜, and the anticlockwise angle α of the line of centres of two bullports and slotted eye length direction center line is 12 °.
Remaining with embodiment 1.
Claims (10)
1. the short slotted eye processing method of pcb board, is characterized in that it comprises the following steps:
(1) in the corresponding edge of waiting out short slotted eye length direction, bore respectively two bullports, slotted eye minor axis < 1.0 ㎜ of described short slotted eye and flute length/groove footpath < 2, the aperture of described bullport is (slotted eye minor axis-0.1)/2 ㎜～(slotted eye minor axis-0.25) ㎜, the anticlockwise angle α of the line of centres of two bullports and slotted eye length direction center line is 10 °～35 °, and the distance at described bullport and short slotted eye edge is 1 ㏕～3 ㏕;
(2) the drill point that adopts diameter to equal slotted eye minor axis bores a hole in short slotted eye one end along its length, then bores a hole at the corresponding other end, two holes respectively with the edge inscribe of short slotted eye length direction;
(3) then fold and bore along the length direction of short slotted eye.
2. the short slotted eye processing method of pcb board according to claim 1, is characterized in that, in the time of flute length/groove footpath≤1.3, described α angle is preferably 29 °～35 °.
3. the short slotted eye processing method of pcb board according to claim 1, is characterized in that described α angle is preferably 17 °～28 ° in the time of 1.3 < flute length/groove footpath≤1.5.
4. the short slotted eye processing method of pcb board according to claim 1, is characterized in that described α angle is preferably 10 °～16 ° in the time of 1.5 < flute length/groove footpath < 2.
5. according to the short slotted eye processing method of pcb board described in claim 1 or 2 or 3 or 4, it is characterized in that the aperture of described bullport is preferably slotted eye minor axis/2 ㎜.
6. according to the short slotted eye processing method of pcb board described in claim 1 or 2 or 3 or 4, it is characterized in that the distance at described bullport and short slotted eye edge is preferably 2 ㏕.
7. the short slotted eye processing method of pcb board according to claim 5, is characterized in that the distance at described bullport and short slotted eye edge is preferably 2 ㏕.
8. according to the short slotted eye processing method of pcb board described in claim 1 or 2 or 3 or 4, it is characterized in that described folded brill is the length direction along short slotted eye, alternately fold and bore toward center from two ends.
9. the short slotted eye processing method of pcb board according to claim 5, is characterized in that described folded brill is the length direction along short slotted eye, folded the boring toward center alternately from two ends.
10. the short slotted eye processing method of pcb board according to claim 7, is characterized in that described folded brill is the length direction along short slotted eye, folded the boring toward center alternately from two ends.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410383198.6A CN104259502B (en) | 2014-08-06 | 2014-08-06 | The short slotted eye processing method of pcb board |
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| CN201410383198.6A CN104259502B (en) | 2014-08-06 | 2014-08-06 | The short slotted eye processing method of pcb board |
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| CN104259502A CN104259502A (en) | 2015-01-07 |
| CN104259502B true CN104259502B (en) | 2016-05-18 |
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| CN105128087A (en) * | 2015-08-26 | 2015-12-09 | 江苏苏杭电子有限公司 | Method for processing short slotted hole in printed circuit board |
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| CN106624012A (en) * | 2016-12-29 | 2017-05-10 | 安徽深泽电子科技有限公司 | Manufacturing method of short slotted hole on PCB (Printed Circuit Board) |
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| CN111417261A (en) * | 2020-04-14 | 2020-07-14 | 高德（江苏）电子科技有限公司 | Method for improving tail deformation of short slotted hole in PCB processing |
| CN111669896B (en) * | 2020-04-29 | 2023-10-27 | 东莞联桥电子有限公司 | Processing method of PCB short slot |
| CN112616258B (en) * | 2021-01-12 | 2022-06-17 | 广东世运电路科技股份有限公司 | Circuit board negative film and processing method thereof |
| CN116586652B (en) * | 2023-07-04 | 2024-05-07 | 淄博芯材集成电路有限责任公司 | Reaming manufacturing method for preventing short slot hole of packaging loading plate from being deviated |
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| EP0642861A1 (en) * | 1993-09-10 | 1995-03-15 | International Business Machines Corporation | Apparatus and method for drilling |
| JPH11284310A (en) * | 1998-03-27 | 1999-10-15 | Ibiden Co Ltd | Method for boring elliptic hole through printed wiring board |
| JP2007098502A (en) * | 2005-10-04 | 2007-04-19 | Elna Co Ltd | Oblong hole-machining method for printed circuit board |
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Address after: 413001 Changchun Industrial Park, Ziyang District, Hunan, Yiyang Patentee after: AOSHIKANG TECHNOLOGY Co.,Ltd. Address before: 413001 Changchun Industrial Park, Ziyang District, Hunan, Yiyang Patentee before: Hunan aoshikang Polytron Technologies Inc. Address after: 413001 Changchun Industrial Park, Ziyang District, Hunan, Yiyang Patentee after: Hunan aoshikang Polytron Technologies Inc. Address before: 413001 Changchun Industrial Park, Ziyang District, Hunan, Yiyang Patentee before: AOSHIKANG TECHNOLOGY (YIYANG) Co.,Ltd. |