CN102997958B - Novel universal PCB (printed circuit board) testing machine with double-crank connecting rod pressed precisely - Google Patents
Novel universal PCB (printed circuit board) testing machine with double-crank connecting rod pressed precisely Download PDFInfo
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- CN102997958B CN102997958B CN201110271828.7A CN201110271828A CN102997958B CN 102997958 B CN102997958 B CN 102997958B CN 201110271828 A CN201110271828 A CN 201110271828A CN 102997958 B CN102997958 B CN 102997958B
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Abstract
The invention discloses a novel universal PCB (printed circuit board) testing machine with a double-crank connecting rod pressed precisely and relates to the field of PCB testing. The novel universal PCB testing machine comprises a bottom plate, a side plate, a middle upright plate, a fastening box, a wedged micro-adjusting mechanism and a double-crank connecting rod mechanism, wherein the wedged micro-adjusting mechanism comprises an adjustable wedged base, the double-crank connecting rod mechanism comprises a main servo motor, a servo eccentric wheel, a servo connecting rod, a main crank connecting rod and a main crank connecting rod base, the main servo motor is fixed on the side plate, an output shaft of the main servo motor is connected to the servo eccentric wheel, the main crank connecting rod divides the main crank connecting rod into two parts by a middle shaft which is connected with one end of the servo connecting rod, and the other end of the servo connecting rod is rotationally connected with the servo eccentric wheel, the upper end of the main crank connecting rod is connected with the adjustable wedged base rotationally, and the lower end of the main crank connecting rod is rotationally connected with the main crank connecting rod base fixed on the bottom plate of the testing machine. The novel universal PCB testing machine has the advantages that testing accuracy, stability and control of indentation depth are improved, noise is effectively reduced and energy resources are saved.
Description
Technical field
The present invention relates to PCB field tests, particularly relate to the novel PC B universal testing machine of the accurate pressing of a kind of double-crank connecting rod.
Background technology
Along with the development of PCB industry, production firm correspondingly develops various types of PCB test machine to meet the needs of PCB test.Traditional PCB universal testing machine is generally drive the component of ball screw to the such as test fixture and so on test machine to drive by servomotor, on special tester also useful cylinder as the PCB test machine of drive source.But due to the density of pcb board and accuracy requirement more and more higher, PCB universal testing machine brought up to four density from dual density in 10 years, there is again now the PCB test machine of octuple density, namely HDI high precision measurement machine, and current cylinder or ball wire rod mechanism are difficult to the requirement meeting high precision measurement, and when testing pcb board, because the thickness of pcb board is different, the control that pcb board pricks the trace degree of depth also also exists very large difficulty, in addition, the noise large (more than 80 decibels) of common test machine, positioning control difficulty is high, screw mandrel reaches stressed maximal value at the upper change point of test bit, screw mandrel wearing and tearing are uneven, stressed in order to meet test bit, the electric power of the servomotor used is comparatively large, and in other times of 90%, stressed only have test bit stressed less than 10%, cause the waste of power of motor, ball screw lubrication comparatively difficulty, the many glass fibre in the bad border that works and dust, can accelerate the wearing and tearing of ball screw, shortens its serviceable life.
Summary of the invention
The object of the invention is to the deficiency overcoming above-mentioned technology, provide that a kind of noise is little, with low cost, power of motor is little, and the novel PC B universal testing machine of the accurate pressing of the double-crank connecting rod that can meet high precision measurement requirement.
Technical scheme of the present invention is achieved in that it comprises machine bed plate, machine side plate, middle riser, card case and wedge micro-adjusting mechanism, and described wedge micro-adjusting mechanism comprises adjustable wedge base; Its improvements are: the present invention also comprises drag link, described drag link comprises main servo motor, servo eccentric wheel, servo connecting rod, main crank connecting rod and main crank connecting rod base, described main servo motor is fixed on machine side plate, and the output shaft of this main servo motor is connected to servo eccentric wheel; Main crank connecting rod is divided into the two parts be rotationally connected by described main crank connecting rod by axis, this axis is also connected to one end of servo connecting rod, and the other end and the servo eccentric wheel of servo connecting rod are rotationally connected; Described main crank small end is connected with adjustable wedge base rotation, and lower end is connected with the main crank connecting rod base rotation be fixed on machine bed plate;
In said structure, described wedge micro-adjusting mechanism also comprises fine setting servomotor, ball wire bar pair, adjustable wedge and fixing wedge, described fine setting servomotor is fixed on adjustable wedge base, fine setting servo motor output shaft is connected to ball wire bar pair, described ball wire bar pair is arranged on adjustable wedge, this is adjustable, and wedge contacts with fixing wedge, and described fixing wedge is fixed on card case;
In said structure, described middle riser is vertically installed on machine bed plate, in this, riser is provided with guide pillar, correspondingly on described card case is provided with guide pin bushing seat, and card case is slidably connected by guide pin bushing seat and guide pillar;
In said structure, described in be rotationally connected into ball bearing connect to be connected with roller bearing wherein any one;
In said structure, described servo eccentric wheel is cam-like structure.
Beneficial effect of the present invention is: one, the accurate laminating mechanism of employing double-crank connecting rod replace ball wire rod mechanism, the transmission rotating through servo eccentric wheel, servo connecting rod and main crank connecting rod of main servo motor, change moving up and down of card case into, again by adjustable wedge, the regulating action of fine setting servomotor, effectively can improve pcb board measuring accuracy and control the depth of cup of test; Two, this device is relative to ball wire rod mechanism, by the accurate guide effect of guide pillar guide pin bushing, card case is moved up and down more steady, can improve the stability that its mechanism runs; Three, finely tune servo motor output shaft and be connected to ball wire bar pair, the transmission efficiency high (reaching more than 85%) of ball wire bar pair, positioning precision are high, highly sensitive, ball wire bar pair acts on this wedge micro-adjusting mechanism, make the degree of regulation of wedge micro-adjusting mechanism high, the requirement of various fine adjustments can be met; Four, rotatable connecting portion all adopts ball bearing to connect, wear and tear when mechanism is run little, noise is low, reliable operation; Five, eliminate grating scale, improve the positioning precision on pressing summit, because the maximal value of motor load is not or not pressing summit, the power of main servo motor is below original half, more energy-conservation comparatively speaking, the dynamic characteristic of card case before and after summit is milder, soft, does not impact suddenly, depth of cup advantageously in pcb board surface controls, and can prevent the damage of pcb board.
Accompanying drawing explanation
Fig. 1 is scheme of installation of the present invention;
Fig. 2 is working state figure of the present invention;
In figure: machine bed plate 1; Machine side plate 2; Middle riser 3; Card case 4; Adjustable wedge base 5; Main servo motor 6; Servo eccentric wheel 7; Servo connecting rod 8; Main crank connecting rod 9; Main crank connecting rod base 10; Fine setting servomotor 11; Ball wire bar pair 12; Adjustable wedge 13; Fixing wedge 14; Guide pin bushing seat 15; Guide pillar 16; Axis 17.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
With reference to Fig. 1, the embodiment that Figure 2 shows that the novel PC B universal testing machine of the accurate pressing of a kind of double-crank connecting rod that the present invention discloses, it comprises machine bed plate 1, machine side plate 2, middle riser 3, card case 4, wedge micro-adjusting mechanism and drag link, described middle riser 3 is vertically installed on machine bed plate 1, in this, riser 3 is provided with guide pillar 16, correspondingly on card case 4 be provided with guide pin bushing seat 15, card case 4 is slidably connected by guide pin bushing seat 15 and guide pillar 16; Wedge micro-adjusting mechanism comprises base 5, fine setting servomotor 11, ball wire bar pair 12, adjustable wedge 13 and fixing wedge 14, fine setting servomotor 11 is fixed on adjustable wedge base 5, fine setting servomotor 11 output shaft is connected to ball wire bar pair 12, described ball wire bar pair 12 is arranged on adjustable wedge 13, this is adjustable, and wedge 13 contacts with fixing wedge 14, and fixing wedge is fixed on card case 4; Described drag link comprises main servo motor 6, servo eccentric wheel 7, servo connecting rod 8, main crank connecting rod 9 and main crank connecting rod base 10, and main servo motor 6 is fixed on machine side plate 2, and the output shaft of this main servo motor 6 is connected to servo eccentric wheel 7; Main crank connecting rod 9 is divided into the two parts be rotationally connected by described main crank connecting rod 9 by axis 17, this axis 17 is also connected to one end of servo connecting rod 8, and the other end of servo connecting rod 8 is connected by ball bearing with servo eccentric wheel 7; Described main crank connecting rod 9 upper end is connected by ball bearing with adjustable wedge base 5, and lower end is connected by ball bearing with the main crank connecting rod base 10 be fixed on machine bed plate 1.
Pass through said structure, the rotation of main servo motor 6 drives servo eccentric wheel 7 to rotate, because servo eccentric wheel is cam-like structure, again by being connected with one end of servo connecting rod 8, servo connecting rod 8 is made to do front-rear reciprocation movement, the other end of servo connecting rod 8 is rotationally connected by axis 17 and main crank connecting rod 9, and main crank connecting rod 9 lower end is connected to main crank connecting rod base 10, main crank connecting rod 9 upper end is connected on wedge micro-adjusting mechanism base 5, and then by carrying out the effect of the guide pillar 16 that sliding type is connected with card case 4, thus make servo connecting rod 8 bilateral reciprocation convert vertically moving up and down of card case 4 to, by this kind of mode, pcb board is tested, because the maximal value of main servo motor 6 load is not or not pressing summit, so plant the power that double-crank connecting rod laminating mechanism can effectively reduce main servo motor 6.In addition, the output shaft of fine setting servomotor 11 is provided with ball wire bar pair 12, ball wire bar pair 12 is connected with adjustable wedge 13, drive the motion of ball wire bar pair 12 by fine setting servomotor 11 thus drive the motion of adjustable wedge 13, due to adjustable wedge 13 and the contact of fixing wedge 14, adjustable wedge 13 is very little with fixing wedge 14 gradient, there is self-locking performance, working stability is reliable, and fixing wedge 14 is fixing with on card case 4, therefore, the rotation of fine setting servomotor 11 is finally convertible into small the moving up and down of card case 4, due to the transmission efficiency of ball wire bar pair 12 high (reaching more than 85%), positioning precision is high, highly sensitive, so make this wedge micro-adjusting mechanism can meet high-precision test, there is provided power by double-crank connecting rod laminating mechanism, the thickness of wedge micro-adjusting mechanism to PCB regulates, and finally realizes the high precision measurement function of pcb board.
In the above-described embodiments; we can change this mechanism; such as: bottom wedge micro-adjusting mechanism being arranged at double-crank connecting rod laminating mechanism; again the fixing of corresponding position is carried out to main crank connecting rod 9; also can realize effect of the present invention, but its purport still belongs to protection scope of the present invention.
The announcement of book according to the above description, those skilled in the art in the invention can also carry out suitable change and amendment to above-mentioned embodiment, as guide rod guide bush movement pair is become spherical guide kinematic pair etc.Therefore, the present invention is not limited to embodiment disclosed and described above, also should fall in the protection domain of claim of the present invention modifications and changes more of the present invention.In addition, although employ some specific terms in this instructions, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (4)
1. a novel PC B universal testing machine for the accurate pressing of double-crank connecting rod, it comprises machine bed plate, machine side plate, middle riser, card case and wedge micro-adjusting mechanism, and described wedge micro-adjusting mechanism comprises adjustable wedge base; It is characterized in that: it also comprises drag link, described drag link comprises main servo motor, servo eccentric wheel, servo connecting rod, main crank connecting rod and main crank connecting rod base, described main servo motor is fixed on machine side plate, and the output shaft of this main servo motor is connected to servo eccentric wheel; Main crank connecting rod is divided into the two parts be rotationally connected by described main crank connecting rod by axis, this axis is also connected to one end of servo connecting rod, and the other end and the servo eccentric wheel of servo connecting rod are rotationally connected; Described main crank connecting rod one end is connected with adjustable wedge base rotation, and the other end is connected with the main crank connecting rod base rotation be fixed on machine bed plate; Described middle riser is vertically installed on machine bed plate, in this, riser is provided with guide pillar, correspondingly on described card case is provided with guide pin bushing seat, and card case is slidably connected by guide pin bushing seat and guide pillar.
2. the novel PC B universal testing machine of the accurate pressing of double-crank connecting rod according to claim 1, it is characterized in that: described wedge micro-adjusting mechanism also comprises fine setting servomotor, ball wire bar pair, adjustable wedge and fixing wedge, described fine setting servomotor is fixed on adjustable wedge base, fine setting servo motor output shaft is connected to ball wire bar pair, described ball wire bar pair is arranged on adjustable wedge, this is adjustable, and wedge contacts with fixing wedge, and described fixing wedge is fixed on card case.
3. the novel PC B universal testing machine of the accurate pressing of double-crank connecting rod according to claim 1, is characterized in that: described in be rotationally connected into ball bearing connect to be connected with roller bearing wherein any one.
4. the novel PC B universal testing machine of the accurate pressing of double-crank connecting rod according to claim 1, is characterized in that: described servo eccentric wheel is cam-like structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110271828.7A CN102997958B (en) | 2011-09-14 | 2011-09-14 | Novel universal PCB (printed circuit board) testing machine with double-crank connecting rod pressed precisely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110271828.7A CN102997958B (en) | 2011-09-14 | 2011-09-14 | Novel universal PCB (printed circuit board) testing machine with double-crank connecting rod pressed precisely |
Publications (2)
| Publication Number | Publication Date |
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| CN102997958A CN102997958A (en) | 2013-03-27 |
| CN102997958B true CN102997958B (en) | 2015-01-28 |
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| CN201110271828.7A Active CN102997958B (en) | 2011-09-14 | 2011-09-14 | Novel universal PCB (printed circuit board) testing machine with double-crank connecting rod pressed precisely |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478254B (en) * | 2017-09-12 | 2024-02-20 | 张家港科康智能科技有限公司 | Motor positioning mechanism of motor testing machine |
| CN109275281A (en) * | 2018-10-29 | 2019-01-25 | 昆山佰奥智能装备股份有限公司 | Fine adjustment mould group |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2471747Y (en) * | 2001-02-12 | 2002-01-16 | 南京熊猫电子股份有限公司 | PCB transferring module device |
| CN2733351Y (en) * | 2004-10-26 | 2005-10-12 | 黄桃 | Moving-pointer type printed circuit optical board testing machine |
| CN200947106Y (en) * | 2006-06-06 | 2007-09-12 | 深圳麦逊电子有限公司 | Deviation fine tuning device for PCB testing |
| CN200989909Y (en) * | 2006-11-20 | 2007-12-12 | 深圳麦逊电子有限公司 | Vernier adjustable PCB test device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004150830A (en) * | 2002-10-28 | 2004-05-27 | Yamashina Denki Seisakusho:Kk | Printed circuit board inspection apparatus |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2471747Y (en) * | 2001-02-12 | 2002-01-16 | 南京熊猫电子股份有限公司 | PCB transferring module device |
| CN2733351Y (en) * | 2004-10-26 | 2005-10-12 | 黄桃 | Moving-pointer type printed circuit optical board testing machine |
| CN200947106Y (en) * | 2006-06-06 | 2007-09-12 | 深圳麦逊电子有限公司 | Deviation fine tuning device for PCB testing |
| CN200989909Y (en) * | 2006-11-20 | 2007-12-12 | 深圳麦逊电子有限公司 | Vernier adjustable PCB test device |
Non-Patent Citations (1)
| Title |
|---|
| JP特開2004-150830A 2004.05.27 * |
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