CN103591240A - Precise linear motion device - Google Patents
Precise linear motion device Download PDFInfo
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- CN103591240A CN103591240A CN201310588730.3A CN201310588730A CN103591240A CN 103591240 A CN103591240 A CN 103591240A CN 201310588730 A CN201310588730 A CN 201310588730A CN 103591240 A CN103591240 A CN 103591240A
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- cam
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
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Abstract
The invention discloses a precise linear motion device which is characterized by comprising a roller frame, rollers, cams and a camshaft. The left row of rollers and the right row of rollers are arranged on the roller frame and are arranged at equal intervals in a linear mode. The distance among the left row of rollers is the same as that among the right row of rollers. The left row of rollers and the right row of rollers are staggered at a certain distance in the front and back direction. The cams comprise the left cam and the right cam. The curve of the left cam and the curve of the right cam are the same, the left cam and the right cam are installed on the same camshaft and staggered by an angle of 180 degrees in the circumferential direction. The left cam corresponds to the left row of rollers. The right cam corresponds to the right row of rollers. The left cam and the right cam make contact with the rollers to drive the roller frame to move front and back in a linear mode. The precise linear motion device is applied to linear motion places of mechanical equipment and has the advantages of being free of gaps in the transmission process, high in transmission precision, heavy in loads, long in service life, convenient to repair and the like.
Description
Technical field
The present invention relates to a kind of precision straight-line motion appts of applying in machinery straight line motion occasion.
Background technique
In a lot of machinery, to be applied to straight line motion, what precision was the highest at present is to adopt ball screw nut structure, nut is fixed on the bottom of movable mold, when ball screw is rotated by motor driving, drives nut and then drives movable mold to make front and back straight line motion along switchboards of job guide rail.Although the axial clearance between ball screw and nut is very little, but unavoidably have drive gap, transmission accuracy can not reach peak demand, in addition, ball screw nut structure can not be born compared with heavy load, and more easy to wear, be not very long working life, and repairing replacing is also trouble.
Summary of the invention
In view of the deficiencies in the prior art, the technical problem to be solved in the present invention is to be to provide a kind of machinery straight line motion occasion that is applied to, the precision straight-line motion appts of the advantage such as have transmission gapless, transmission accuracy is high, load is heavy, long service life, repairing are convenient.
For solving the problems of the technologies described above, the present invention can take following two kinds of technological schemes to implement:
The first technological scheme: a kind of precision straight-line motion appts, it is characterized in that: comprise roller stand, roller, cam and camshaft, roller is provided with left and right two rows on roller stand, left bank roller and right row roller are respectively with linear fashion spaced set, the spacing of left bank roller is identical with the spacing of right row roller, the left and right row roller certain distance that staggers on fore-and-aft direction; Cam comprises left cam and right cam, the cam curve of left cam and right cam is identical, left cam and right cam are installed and the 180o angle of staggering in circumferential direction on same camshaft, left cam is corresponding with left bank roller, right cam is corresponding with right row roller, left and right cam promotes roller stand work front and back straight line motion by contacting with roller, when left and right cam promotion roller stand travels forward, the surface of contact of roller and cam is roller forward face, and when left and right cam promotion roller stand moves backward, the surface of contact of roller and cam is the reverse face of roller; When left cam contacts with the forward face of left bank roller, right cam contacts with the reverse face of right row roller, when left cam contacts with the reverse face of left bank roller, right cam contacts with the forward face of right row roller, when left cam contacts with the summit of left bank roller, right cam contacts with reverse face with the forward face of right row's two adjacent rollers simultaneously, and when right cam contacts with the summit of right row roller, left cam contacts with reverse face with the forward face of left bank two adjacent rollers simultaneously.
The second technological scheme: a kind of precision straight-line motion appts, it is characterized in that: comprise roller stand, roller, cam and camshaft, roller on roller stand with linear fashion spaced set, cam comprises front cam and rear cam, the cam curve of front cam and rear cam is identical, front cam and the rear cam 180o angle of staggering in circumferential direction, front cam is arranged on lordosis wheel shaft, rear cam is arranged on rear camshaft, turning to of front and back camshaft is identical, front and back cam promotes roller stand work front and back straight line motion by contacting with roller, when front and back cam promotion roller stand travels forward, the surface of contact of roller and cam is roller forward face, when front and back cam promotion roller stand moves backward, the surface of contact of roller and cam is the reverse face of roller, when front cam contacts with the forward face of roller, rear cam contacts with the reverse face of roller, when front cam contacts with the reverse face of roller, rear cam contacts with the forward face of roller, when front cam contacts with the summit of roller, rear cam contacts with reverse face with the forward face of two adjacent rollers simultaneously, and when rear cam contacts with the summit of roller, front cam contacts with reverse face with the forward face of two adjacent rollers simultaneously.
The precision straight-line motion appts of above-mentioned two kinds of technological schemes, is brand new, and it is applied to the straight line motion occasion of machinery, the advantage such as have transmission gapless, transmission accuracy is high, load is heavy, long service life, repairing are convenient.Its working principle is: cam rotates a circle, and cam is by contacting the crow flight distance that promotes a roller spacing of roller stand motion with roller; When cam reverse (counterclockwise) rotates, all the time there is cam to contact with roller forward face as promoting wheel and promote roller and make roller stand moving linearly forward, have the reverse face of cam and roller contact to lean roller as clutch to prevent that roller stand work from moving backward simultaneously; Otherwise when cam forward rotation, there is all the time the reverse face of cam and roller to contact as promoting wheel and promote roller and make roller stand moving linearly backward, have cam contact with roller forward face to lean roller as clutch to prevent that roller stand work from moving forward simultaneously.Because the contact process of above-mentioned cam and roller is that gapless promotes, and cam is easy to realize high-precision processing, so the transmission accuracy of precision straight-line motion appts is high, beneficial effect is in addition: owing to adopting cam to promote roller mode, realize straight line motion 1., so can bear compared with heavy load, 2. between cam and roller, for rolling, contact, friction factor is little, so cam and roller are not easy to wear, long service life, can keep transmission accuracy for a long time, as truly there being wearing and tearing, as long as change roller, repair very convenient.
accompanying drawing explanation
The present invention has following accompanying drawing:
Fig. 1 is the structural drawing of the first technological scheme of the present invention,
Fig. 2 is the B-B view of Fig. 1,
Fig. 3 is the A-A view of Fig. 1,
Fig. 4 is the view after the cam in Fig. 2 rotates backward,
Fig. 5 is the view after the cam in Fig. 3 rotates backward,
Fig. 6 is the structural drawing of the second technological scheme of the present invention,
Fig. 7 is the view after the cam in Fig. 6 rotates backward.
Embodiment
Accompanying drawing has represented technological scheme of the present invention and embodiment, further describes by reference to the accompanying drawings each details and the working principle thereof of embodiment below again.
As Figure 1-5, the precision straight-line motion appts of the first technological scheme of the present invention, comprise roller stand 1, roller, cam and camshaft 6, roller is provided with left and right two rows on roller stand 1, left bank roller 2 and right row roller 3 are respectively with linear fashion spaced set, the spacing of left bank roller 2 is identical with the spacing of right row roller 3, the left and right row roller certain distance that staggers on fore-and-aft direction, cam comprises left cam 4 and right cam 5, the cam curve of left cam and right cam is identical, left cam 4 and right cam 5 are installed and the 180o angle of staggering in circumferential direction on same camshaft 6, camshaft 6 is driven by motor 102, left cam 4 is corresponding with left bank roller 2, right cam 5 is corresponding with right row roller 3, left and right cam promotes roller stand 1 work front and back straight line motion by contacting with roller, when left and right cam promotion roller stand travels forward (arrow direction in figure), the surface of contact of roller and cam is roller forward face (M region), when left and right cam promotion roller stand moves backward, the surface of contact of roller and cam is the reverse face of roller (n-quadrant), the design cam curve of left and right cam is: when left cam 4 contacts with the forward face of left bank roller 2, right cam 5 contacts with the reverse face of right row roller 3, when left cam 4 contacts with the reverse face of left bank roller 2, right cam 5 contacts with the forward face of right row roller 3, when left cam 4 contacts with the summit of left bank roller 2, right cam 5 contacts with reverse face with the forward face of right row's two adjacent rollers 3 simultaneously, when right cam 5 contacts with the summit of right row roller 3, left cam 4 contacts with reverse face with the forward face of left bank two adjacent rollers 2 simultaneously.
The precision straight-line motion appts of the first technological scheme is performed such work: roller stand 1 is fixed on the bottom of movable mold 100, movable mold 100 is slided and is located on switchboards of job guide rail 101, when motor 102 drive cam shaft 6 rotate backward, shown in Fig. 2,3, left cam 4 contacts conduct and promotes the straight line motion (arrow direction in figure) that wheel promotion roller stand 1 is done forward with the forward face of left bank roller 2, now right cam 5 contacts with the reverse face of right row roller 3 as clutch and prevents the action backward of roller stand 1 do; Shown in Fig. 4,5, when right cam 5 forwards to while contacting with the summit of right row roller 3, left cam 4 contacts with the forward face of left bank roller 2 and contacts with the reverse face of another adjacent rollers of left bank simultaneously, now left cam 4 not only plays a driving role but also play backrest effect, and right cam 5 neither plays a driving role and also do not play backrest effect; In above-mentioned cam pushing course, all the time there is cam to contact with roller forward face and promote roller stand work straight line motion forward, there is the reverse face contact preventing of cam and roller roller stand to do action backward simultaneously, left and right cam alternately plays the effect that promotes wheel and clutch, realize gapless promotion, realized the highi degree of accuracy Linear transmission of precision straight-line motion appts.
As Fig. 6, shown in 7, the precision straight-line motion appts of the second technological scheme of the present invention, comprise roller stand 1, roller 7, cam and camshaft, roller 7 on roller stand 1 with linear fashion spaced set, cam comprises front cam 8 and rear cam 9, the cam curve of front cam and rear cam is identical, front cam and the rear cam 180o angle of staggering in circumferential direction, front cam 8 is arranged on lordosis wheel shaft 10, rear cam 9 is arranged on rear camshaft 11, before and after camshaft turn to that rotating speed is identical synchronously to be driven by motor, front and back cam promotes roller stand 1 work front and back straight line motion by contacting with roller, when front and back cam promotion roller stand travels forward, the surface of contact of roller and cam is roller forward face (M region), when front and back cam promotion roller stand moves backward, the surface of contact of roller and cam is the reverse face of roller (n-quadrant), the design cam curve of front and back cam is: when front cam 8 contacts with the forward face of roller 7, rear cam 9 contacts with the reverse face of roller 7, when front cam 8 contacts with the reverse face of roller 7, rear cam 9 contacts with the forward face of roller 7, when front cam contacts with the summit of roller, rear cam contacts with reverse face with the forward face of two adjacent rollers simultaneously, and when rear cam contacts with the summit of roller, front cam contacts with reverse face with the forward face of two adjacent rollers simultaneously.
The precision straight-line motion appts of the second technological scheme is performed such work: before and after motor drives, camshaft rotates backward with same rotational speed, shown in Fig. 6, front cam 8 contacts conduct promotion wheel and promotes the straight line motion (arrow direction in figure) that roller stand 1 is done forward with the forward face of roller 7, now rear cam 9 contacts with the reverse face of roller 7 as clutch and prevents the action backward of roller stand do; Shown in Fig. 7, when rear cam 9 forwards to while contacting with the summit of roller 7, front cam 8 contacts with the forward face of roller 7 and contacts with the reverse face of another adjacent rollers simultaneously, and now front cam 8 not only plays a driving role but also play backrest effect, and then cam 9 neither plays a driving role and also do not play backrest effect; In above-mentioned cam pushing course, all the time there is cam to contact with roller forward face and promote roller stand work straight line motion forward, there is the reverse face contact preventing of cam and roller roller stand to do action backward simultaneously, front and back cam alternately plays the effect that promotes wheel and clutch, realize gapless promotion, realized the highi degree of accuracy Linear transmission of precision straight-line motion appts.
Claims (2)
1. a precision straight-line motion appts, it is characterized in that: comprise roller stand, roller, cam and camshaft, roller is provided with left and right two rows on roller stand, left bank roller and right row roller are respectively with linear fashion spaced set, the spacing of left bank roller is identical with the spacing of right row roller, the left and right row roller certain distance that staggers on fore-and-aft direction; Cam comprises left cam and right cam, the cam curve of left cam and right cam is identical, left cam and right cam are installed and the 180o angle of staggering in circumferential direction on same camshaft, left cam is corresponding with left bank roller, right cam is corresponding with right row roller, left and right cam promotes roller stand work front and back straight line motion by contacting with roller, when left and right cam promotion roller stand travels forward, the surface of contact of roller and cam is roller forward face, and when left and right cam promotion roller stand moves backward, the surface of contact of roller and cam is the reverse face of roller; When left cam contacts with the forward face of left bank roller, right cam contacts with the reverse face of right row roller, when left cam contacts with the reverse face of left bank roller, right cam contacts with the forward face of right row roller, when left cam contacts with the summit of left bank roller, right cam contacts with reverse face with the forward face of right row's two adjacent rollers simultaneously, and when right cam contacts with the summit of right row roller, left cam contacts with reverse face with the forward face of left bank two adjacent rollers simultaneously.
2. a precision straight-line motion appts, it is characterized in that: comprise roller stand, roller, cam and camshaft, roller on roller stand with linear fashion spaced set, cam comprises front cam and rear cam, the cam curve of front cam and rear cam is identical, front cam and the rear cam 180o angle of staggering in circumferential direction, front cam is arranged on lordosis wheel shaft, rear cam is arranged on rear camshaft, turning to of front and back camshaft is identical, front and back cam promotes roller stand work front and back straight line motion by contacting with roller, when front and back cam promotion roller stand travels forward, the surface of contact of roller and cam is roller forward face, when front and back cam promotion roller stand moves backward, the surface of contact of roller and cam is the reverse face of roller, when front cam contacts with the forward face of roller, rear cam contacts with the reverse face of roller, when front cam contacts with the reverse face of roller, rear cam contacts with the forward face of roller, when front cam contacts with the summit of roller, rear cam contacts with reverse face with the forward face of two adjacent rollers simultaneously, and when rear cam contacts with the summit of roller, front cam contacts with reverse face with the forward face of two adjacent rollers simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310588730.3A CN103591240B (en) | 2013-11-21 | 2013-11-21 | A kind of precision straight-line motion appts |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310588730.3A CN103591240B (en) | 2013-11-21 | 2013-11-21 | A kind of precision straight-line motion appts |
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| CN103591240A true CN103591240A (en) | 2014-02-19 |
| CN103591240B CN103591240B (en) | 2015-12-02 |
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| CN201310588730.3A Active CN103591240B (en) | 2013-11-21 | 2013-11-21 | A kind of precision straight-line motion appts |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108176625A (en) * | 2018-02-09 | 2018-06-19 | 苏州长城开发科技有限公司 | PCB contact pad automatic flushing devices |
| CN110553816A (en) * | 2019-10-22 | 2019-12-10 | 中国计量大学 | Fluctuating wall resistance testing device based on fish swimming posture |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1334091A (en) * | 1970-11-20 | 1973-10-17 | Produmatic | Devices for angular detent-positioning of a rotatable member |
| JPS60211158A (en) * | 1984-04-05 | 1985-10-23 | Otsuka Kamu Kk | Rectilinear feed mechanism |
| JPH116360A (en) * | 1997-06-17 | 1999-01-12 | Shizuo Nemoto | Parallel transfer device, opening/closing device of panel, and sealing device of gap at lower part of door |
| CN1224812A (en) * | 1998-01-24 | 1999-08-04 | 江汉石油学院 | Parallel direct-acting push rod transmission mechanism |
| CN2611683Y (en) * | 2003-01-21 | 2004-04-14 | 陕西科技大学 | Precision straight-line motion appts. |
| CN101718946A (en) * | 2009-11-04 | 2010-06-02 | 中国科学院长春光学精密机械与物理研究所 | Image plane focusing mechanism used for push-broom type aero remote sensor |
| CN203532658U (en) * | 2013-11-21 | 2014-04-09 | 浙江宏华机械塑胶有限公司 | Precise linear motion device |
-
2013
- 2013-11-21 CN CN201310588730.3A patent/CN103591240B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1334091A (en) * | 1970-11-20 | 1973-10-17 | Produmatic | Devices for angular detent-positioning of a rotatable member |
| JPS60211158A (en) * | 1984-04-05 | 1985-10-23 | Otsuka Kamu Kk | Rectilinear feed mechanism |
| JPH116360A (en) * | 1997-06-17 | 1999-01-12 | Shizuo Nemoto | Parallel transfer device, opening/closing device of panel, and sealing device of gap at lower part of door |
| CN1224812A (en) * | 1998-01-24 | 1999-08-04 | 江汉石油学院 | Parallel direct-acting push rod transmission mechanism |
| CN2611683Y (en) * | 2003-01-21 | 2004-04-14 | 陕西科技大学 | Precision straight-line motion appts. |
| CN101718946A (en) * | 2009-11-04 | 2010-06-02 | 中国科学院长春光学精密机械与物理研究所 | Image plane focusing mechanism used for push-broom type aero remote sensor |
| CN203532658U (en) * | 2013-11-21 | 2014-04-09 | 浙江宏华机械塑胶有限公司 | Precise linear motion device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108176625A (en) * | 2018-02-09 | 2018-06-19 | 苏州长城开发科技有限公司 | PCB contact pad automatic flushing devices |
| CN108176625B (en) * | 2018-02-09 | 2024-05-28 | 苏州长城开发科技有限公司 | Automatic cleaning device for PCB contact pads |
| CN110553816A (en) * | 2019-10-22 | 2019-12-10 | 中国计量大学 | Fluctuating wall resistance testing device based on fish swimming posture |
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| Publication number | Publication date |
|---|---|
| CN103591240B (en) | 2015-12-02 |
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