CN102848263A - Real-time depth control device of PCB (Printed Circuit Board) edge milling machine - Google Patents
Real-time depth control device of PCB (Printed Circuit Board) edge milling machine Download PDFInfo
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- CN102848263A CN102848263A CN2011101773713A CN201110177371A CN102848263A CN 102848263 A CN102848263 A CN 102848263A CN 2011101773713 A CN2011101773713 A CN 2011101773713A CN 201110177371 A CN201110177371 A CN 201110177371A CN 102848263 A CN102848263 A CN 102848263A
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Abstract
The invention discloses a real-time depth control device of a PCB (Printed Circuit Board) edge milling machine. The device comprises a main shaft, a chip absorbing cover, and a Z-axis structure which moves independently from top to bottom, wherein the chip absorbing cover is arranged at the lower end of the main shaft; the Z-axis structure comprises a first-grade grating scale, a second-grade grating scale and a cutter detector; the first-grade grating scale is arranged at the upper part of the main shaft in parallel; the second-grade grating scale is arranged on the chip absorbing cover, and is parallel to the main shaft; and the cutter detector is arranged under the chip absorbing cover. According to the technical scheme, the real-time depth control device of the PCB (Printed Circuit Board) edge milling machine disclosed by the invention has the beneficial effects of being capable of real-time depth control, improving depth control stability improving labor efficiency, and improving the machining precision of a product, and does not need to periodically measure for the compensation of bias.
Description
Technical field
The present invention relates to a kind of numerically controlled processing equipment, be specifically related to a kind of PCB edge milling machines degree of depth real-time control apparatus.
Background technology
Along with the development in pluralism of electronic product, some clients proposes to process stepped keyway at PCB, being used for placing corresponding component, and requires strictly to control milling the degree of depth, and this just need to use the plant equipment with severity control function.
At present, the most of PCB edge milling machines on the market adopts whole Z axis structure synchronization lifting, can't eliminate the error between each main shaft, does not therefore have the severity control function.Some company also develops the machine with severity control function, but can only carry out perception to the panel height of lower cutter starting point, can not accomplish to control in real time because of the needed degree of depth of the bad height change that causes of panel flatness in the process.
Need a kind of PCB edge milling machines degree of depth real-time control apparatus for this reason, have degree of depth Real Time Control Function, greatly improved the stability of severity control, do not need periodic measurement to come compensate simultaneously, greatly improve man efficiency.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of degree of depth Real Time Control Function that has, greatly improve the stability of severity control, do not needed periodic measurement to come compensate simultaneously, greatly improved the PCB edge milling machines degree of depth real-time control apparatus of man efficiency.
For achieving the above object, technical scheme of the present invention is as follows: a kind of PCB edge milling machines degree of depth real-time control apparatus, the Z axis structure that comprises main shaft, sucking hood and independently move up and down, described sucking hood is arranged on described main shaft lower end, described Z axis structure comprises first-order optical grating chi, two-grade grating chi and tool detector, described first-order optical grating chi is set in parallel on described main shaft top, described two-grade grating chi is arranged on the described sucking hood, and be parallel to described main shaft, described tool detector is arranged on described sucking hood below.
Preferably, be provided with protective cover above the described tool detector.
Preferably, described first-order optical grating chi and described two-grade grating chi are perspective grating or reflecting grating.
Preferably, the resolution ratio of described first-order optical grating chi and described two-grade grating chi is 5 μ m, 1 μ m or 0.5 μ m.
Adopt the beneficial effect of the technical program to be: to have degree of depth Real Time Control Function, improved the stability of severity control, do not need periodic measurement to come compensate simultaneously, improved man efficiency, improved the machining accuracy of product.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention technology, the below will do to introduce simply to the accompanying drawing of required use in the embodiment technical description, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is structural representation of the present invention.
Schematic diagram when Fig. 2 is main shaft survey cutter action of the present invention.
Fig. 3 is that presser feet of the present invention rigidly connects the schematic diagram when contacting processed panel.
Fig. 4 is the schematic diagram of drill bit of the present invention when entering panel machining.
Numeral and the represented corresponding component title of letter among the figure:
101. main shaft 102. two-grade grating chis 103. first-order optical grating chis 104. sucking hoods 105. over caps
106 tool detector, 201. drill bits, 202. pressure foots 203. are surveyed the cuttves a little 204. processed panels of giving out light.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Embodiment 1
As shown in Figure 1, sucking hood 104 is arranged on main shaft 101 lower ends, the Z axis structure comprises first-order optical grating chi 103, two-grade grating chi 102 and tool detector 106, first-order optical grating chi 103 is set in parallel on main shaft 101 tops, two-grade grating chi 102 is arranged on the sucking hood 104, and be parallel to main shaft 101, tool detector 106 is arranged on sucking hood 104 belows, and tool detector 106 tops are provided with protective cover 105.In the present embodiment, first-order optical grating chi 103 and two-grade grating chi 102 are the perspective grating, and the resolution ratio of first-order optical grating chi 103 and two-grade grating chi 102 is 1 μ m.
Adopt independently Z axis structure, can eliminate the height tolerance between each main shaft in the assembling process, by control system the height and position of each machining shaft is controlled respectively.Different from traditional measurement cutter mode, when measuring the length of the bit and diameter, also measure point of a knife to the distance of presser feet lower plane.This distance records before each processing beginning, to calibrate the precision of each processing.Do not damaged by pressure by presser feet for assurance tool detector 106, above tool detector, increased protective cover 105.Normal Z axis structure has a first-order optical grating chi, the walking position that is used for the control Z axis, be the stacking height of the different panel machinings of perception, increased a two-grade grating chi newly in the sucking hood position, the relative position change amount that is used for record sucking hood and main shaft, when presser feet touched processed panel, the two-grade grating chi produced initial signal, with the stacks as high of record panel.
Such as Fig. 2, Fig. 3 and shown in Figure 4, operation principle: main shaft 101 stick of tool heads 201, survey the cutter action.Pressure foot 202 at first touches the over cap 105 of tool detector 106 along with the Z axle descends, two-grade grating chi 102 obtains the original position signal.The Z axle continues to descend until tool detector 106 detects point of a knife, at this moment, and two-grade grating chi 102 record walking position X1.Because over cap 105 is (this distance can be passed through repeatedly machining experiment spare error calculating compensation and obtain) of fixing with the distance that tool detector is surveyed cutter luminous point 203, is assumed to be X2, can calculate so the presser feet lower plane to the distance X 0=X1-X2 of point of a knife.For presser feet wearing and tearing and get that cutter holder holds that the position produces apart from the aspect error, can revise by remeasuring the X0 value before each processing.
The degree of depth is milled lower cutter action.As surveying the long action of cutter, pressure foot 202 descends with Z axis and touches first processed plate panel 204, and two-grade grating chi 102 obtains position signalling, and continues dropping distance X0 as the datum mark Z axis, and at this moment, point of a knife has just contacted processed panel 204.According to the controlling depth value D that procedure is set, the Z axle continues to begin processing behind the decline D.From pressure foot 202 contact panel machinings 204, the total distance of the decline of Z axis is X0+D.
X, Y axle move, and begin processing.If in process, run into processed panel 204 rugged phenomenons, control system raises or the reduction Z axis by a grating scale 103, but can keep the reading of two-grade grating chi 102 constant, constant with the distance that guarantees point of a knife and pressure foot 202, can guarantee that like this working depth is not subjected to the impact of panel flatness.
Embodiment 2
All the other are identical with embodiment 1, and difference is, first-order optical grating chi 103 and two-grade grating chi 102 are reflecting grating.
Embodiment 3
All the other are identical with embodiment 1, and difference is, first-order optical grating chi 103 and two-grade grating chi 102 resolution ratio are 5 μ m, according to the difference of requirement on machining accuracy, come the corresponding grating scale that different resolution is set.
Embodiment 4
All the other are identical with embodiment 1, and difference is, first-order optical grating chi 103 and two-grade grating chi 102 resolution ratio are 0.5 μ m, according to the difference of requirement on machining accuracy, come the corresponding grating scale that different resolution is set.
Adopt the beneficial effect of the technical program to be: to have degree of depth Real Time Control Function, improved the stability of severity control, do not need periodic measurement to come compensate simultaneously, improved man efficiency, improved the machining accuracy of product.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the spirit or scope of the present invention, in other embodiments realization.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (4)
1. PCB edge milling machines degree of depth real-time control apparatus, it is characterized in that, the Z axis structure that comprises main shaft, sucking hood and independently move up and down, described sucking hood is arranged on described main shaft lower end, described Z axis structure comprises first-order optical grating chi, two-grade grating chi and tool detector, and described first-order optical grating chi is set in parallel on described main shaft top, and described two-grade grating chi is arranged on the described sucking hood, and be parallel to described main shaft, described tool detector is arranged on described sucking hood below.
2. a kind of PCB edge milling machines degree of depth real-time control apparatus according to claim 1 is characterized in that, described tool detector top is provided with protective cover.
3. a kind of PCB edge milling machines degree of depth real-time control apparatus according to claim 1 and 2 is characterized in that, described first-order optical grating chi and described two-grade grating chi are perspective grating or reflecting grating.
4. a kind of PCB edge milling machines degree of depth real-time control apparatus according to claim 1 and 2 is characterized in that, the resolution ratio of described first-order optical grating chi and described two-grade grating chi is 5 μ m, 1 μ m or 0.5 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101773713A CN102848263A (en) | 2011-06-29 | 2011-06-29 | Real-time depth control device of PCB (Printed Circuit Board) edge milling machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101773713A CN102848263A (en) | 2011-06-29 | 2011-06-29 | Real-time depth control device of PCB (Printed Circuit Board) edge milling machine |
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| CN102848263A true CN102848263A (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101773713A Pending CN102848263A (en) | 2011-06-29 | 2011-06-29 | Real-time depth control device of PCB (Printed Circuit Board) edge milling machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103231400A (en) * | 2013-03-07 | 2013-08-07 | 深圳市大族激光科技股份有限公司 | PCB gong drilling machine and blind gong processing method thereof |
| CN106624180A (en) * | 2017-01-11 | 2017-05-10 | 雪龙数控设备(深圳)有限公司 | Routing method and numerical control routing machine |
Citations (5)
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|---|---|---|---|---|
| EP0871099A2 (en) * | 1997-03-13 | 1998-10-14 | Sei S.p.A. | Electronic control apparatus, utilisable with cutting and milling machines and the like, to obtain constant-depth cuts on slabs |
| CN2836964Y (en) * | 2005-09-23 | 2006-11-15 | 惠州市大亚湾天马电子机械有限公司 | Cutter position measuring device for printed circuit board drill press |
| WO2008135454A1 (en) * | 2007-05-04 | 2008-11-13 | Lg Technologies S.R.L. | Machine tool for precision micro-milling and/or drilling |
| CN101396796A (en) * | 2007-09-28 | 2009-04-01 | 空中巴士西班牙有限公司 | Milling head with electro-mechanical milling depth control |
| CN202129681U (en) * | 2011-06-29 | 2012-02-01 | 维嘉数控科技（苏州）有限公司 | Real-time depth control device of PCB (printed circuit board) edge milling machine |
-
2011
- 2011-06-29 CN CN2011101773713A patent/CN102848263A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0871099A2 (en) * | 1997-03-13 | 1998-10-14 | Sei S.p.A. | Electronic control apparatus, utilisable with cutting and milling machines and the like, to obtain constant-depth cuts on slabs |
| CN2836964Y (en) * | 2005-09-23 | 2006-11-15 | 惠州市大亚湾天马电子机械有限公司 | Cutter position measuring device for printed circuit board drill press |
| WO2008135454A1 (en) * | 2007-05-04 | 2008-11-13 | Lg Technologies S.R.L. | Machine tool for precision micro-milling and/or drilling |
| CN101396796A (en) * | 2007-09-28 | 2009-04-01 | 空中巴士西班牙有限公司 | Milling head with electro-mechanical milling depth control |
| CN202129681U (en) * | 2011-06-29 | 2012-02-01 | 维嘉数控科技（苏州）有限公司 | Real-time depth control device of PCB (printed circuit board) edge milling machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103231400A (en) * | 2013-03-07 | 2013-08-07 | 深圳市大族激光科技股份有限公司 | PCB gong drilling machine and blind gong processing method thereof |
| CN103231400B (en) * | 2013-03-07 | 2015-06-03 | 大族激光科技产业集团股份有限公司 | PCB gong drilling machine and blind gong processing method thereof |
| CN106624180A (en) * | 2017-01-11 | 2017-05-10 | 雪龙数控设备(深圳)有限公司 | Routing method and numerical control routing machine |
| CN106624180B (en) * | 2017-01-11 | 2018-09-25 | 雪龙数控设备(深圳)有限公司 | Gong plate method and numerical control gong machine |
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Application publication date: 20130102 |