CN103775606A - Inner conical surface cam and inner conical surface cam rocker mechanism - Google Patents
Inner conical surface cam and inner conical surface cam rocker mechanism Download PDFInfo
- Publication number
- CN103775606A CN103775606A CN201410032496.0A CN201410032496A CN103775606A CN 103775606 A CN103775606 A CN 103775606A CN 201410032496 A CN201410032496 A CN 201410032496A CN 103775606 A CN103775606 A CN 103775606A
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- China
- Prior art keywords
- cam
- conical surface
- inner conical
- surface cam
- rocking bar
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Classifications
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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
- F16H53/00—Cams ; Non-rotary cams; or cam-followers, e.g. rollers for gearing mechanisms
- F16H53/02—Single-track cams for single-revolution cycles; Camshafts with such cams
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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
- F16H37/122—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types for interconverting rotary motion and oscillating motion
Abstract
The invention discloses an inner conical surface cam and an inner conical surface cam rocker mechanism, wherein the inner conical surface cam rocker mechanism is arranged on a machine frame and comprises an inner conical surface cam and a rocker, the inner conical surface cam is arranged on the machine frame in a way capable of rotating around the self shaft axis, the rocker is hinged and supported on the machine frame and can swing, the inner conical surface cam comprises a cam body, an inner conical surface which is inwards concave in an axial direction is arranged on one shaft end of the cam body, a cam groove is formed in the inner conical surface and is in a sealed state on the cam body, one end of the rocker is provided with a guide element, and the guide element is arranged in the cam groove in a clearance fit way. When the inner conical surface cam rotates around the self shaft axis through being driven by external motive power, the guide element slides along the cam groove under the effect of the cam groove and the inner conical surface, and the rocker can swing around a hinge and support center. The inner conical surface cam rocker mechanism has the advantages that the structure is simple, and greater output displacement can be obtained.
Description
Technical field
the present invention relates to a kind of inner conical surface cam and inner conical surface cam rocker arm mechanism.
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Background technique
slotted link mechanism, that is hinged lever does the mechanism of oscillating traverse motion, in industry and national economy every profession and trade, all has a large amount of application.At present, the slotted link mechanism of industrial extensive use mainly contains two kinds of crank-connecting rod-slotted link mechanism and cam-slotted link mechanisms.
for crank-connecting rod-slotted link mechanism, the rocking bar amplitude of fluctuation maximum that the slotted link mechanism of the type can obtain, but there are three moving links in this mechanism, and mechanism is comparatively complicated, and the displacement of rocking bar, speed, acceleration are all changeless, thereby have greatly limited its application area.
for cam-slotted link mechanism, although the slotted link mechanism of the type can rely on design cam curve to obtain different rocking bar displacement, speed and acceleration, but common disk cam slotted link mechanism, axial cam slotted link mechanism, Globoidal Indexing Cam Mechanism etc., mostly exist rocking bar amplitude of fluctuation little, that is the little problem of fork output displacement.Above-mentioned three kinds of cam mechanisms also have a common outstanding shortcoming, and cam mechanism is relatively large in cam footpath physical dimension upwards, and the compactedness of mechanism is poor.In addition, some cam rocker arm mechanism adopts force-closed design, need to realize by external force the backhaul of rocking bar.
for example, China Machine Press in October, 2007 " the practical mechanism of Machine Design and device atlas (beautiful Neil Sclater of the 1st edition, Nicholas P.Chironis compiles, translate Zouping) " in end face shape sealing cam-slotted link mechanism of introducing of the 150th page of Fig. 5 .1-2, the 68th page of axial cam-slotted link mechanism that Fig. 1-164 are introduced in " mechanism configuration with select (Meng Xian source Jiang Qi writes) " in China Machine Press March in 2004 the 1st edition, the 109th page of globoid cam that Fig. 6-17 are introduced (also claiming worm-cam) indexing mechanism in Chemical Industry Press's in August, 2013 " high Machine Design (the Wang Xinhua chief editor) " of the 1st edition, all adopt shape closure designs, the amplitude of fluctuation of its rocking bar is subject to larger restriction.And in fact the so-called new spherical indexing cam mechanism that " research of Engagement Features For A Newtype Spherical Indexing Cam Mechanism " that " mechanical engineering journal " magazine the 2nd phase of April in 1996 delivers is introduced can replace with the larger disk cam of thickness; And this cam adopts force-closed mode, if become shape sealing, need to increase in addition a cam, be that complex structure degree or manufacture cost all improve undoubtedly greatly.
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Summary of the invention
the object of the invention is to overcome the defect of prior art, a kind of inner conical surface cam simple in structure is provided.
for achieving the above object, the technical solution used in the present invention is: a kind of inner conical surface cam, comprise cam body, and on an axle head of described cam body, there is the inner conical surface along its axial indent, on described inner conical surface, offer cam path.
preferably, described cam path is closed shape on described cam body.
another object of the present invention is to provide a kind of inner conical surface cam rocker arm mechanism simple in structure, thereby obtains larger output displacement.
for achieving the above object, the technical solution used in the present invention is: a kind of inner conical surface cam rocker arm mechanism, be located in frame, described slotted link mechanism comprises and can be located at rotatably the inner conical surface cam in described frame around Pivot Point Center line, hinged rocking bar swingable in described frame, described inner conical surface cam comprises cam body, on one axle head of described cam body, there is the inner conical surface along its axial indent, on described inner conical surface, offer cam path, described cam path is closed shape on described cam body, one end of described rocking bar is provided with guiding element, be located in described cam path to described guiding element Spielpassung.
preferably, on the hinged rotary centerline that is centered close to described cam body of described rocking bar in described frame.
preferably, described guiding element is the one in cylinder termination, bulb termination, cylindrical roller, spherical roller.
due to the utilization of technique scheme, the present invention compared with prior art has following advantages: in inner conical surface cam rocker arm mechanism, the moving element of essence is only inner conical surface cam and rocking bar, it has just realized the compound movement of slotted link mechanism with minimum mechanical component, it is simple in structure, anufacturability is good, technical performance index is high, can export different displacements, speed and acceleration, can obtain larger output displacement simultaneously, overcome the defect that in prior art, slotted link mechanism exists, also filled up a blank in cam mechanism field, it concerning traditional mechanics, is also a kind of contribution.
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Accompanying drawing explanation
accompanying drawing 1 is the axle head schematic diagram of inner conical surface cam in the present invention;
accompanying drawing 2 is the structural representation of inner conical surface cam rocker arm mechanism in the present invention;
Embodiment
below in conjunction with accompanying drawing and specific embodiment, technological scheme of the present invention is further elaborated.
inner conical surface cam rocker arm mechanism shown in Figure 2, is located in frame 1, and this slotted link mechanism comprises and can be located at rotatably the inner conical surface cam 2 in frame 1, hinged rocking bar 3 swingable in frame 1 around Pivot Point Center line.
shown in Fig. 1, Fig. 2, inner conical surface cam 2 comprises cam body 21, and the upper axle head of cam body 21 is arranged in frame 1 rotatably, has the inner conical surface 22 along its axial indent in its lower shaft end, and the center line of this inner conical surface 22 is the shaft axis of cam body 21.On inner conical surface 22, offer cam path 23, this cam path 23 is closed shape on cam body 21, and on cam path 23, having the radial dimension between the shaft axis of a section and cam body 1 at least is non-constant value.
one end of rocking bar 3 is hinged in frame 1, and its other end is provided with guiding element 4, and guiding element 4 centers are arranged on the upper end of rocking bar 3 regularly.Be located in cam path 23 to these guiding element 4 Spielpassung, thereby make guiding element 4 can slide or roll along the bearing of trend of cam path 23 in cam path 23.Certainly, the hinged hinged center in frame 1 of rocking bar 3 also can need to be located at according to the design of the displacement output terminal of rocking bar 3 middle part of rocking bar 3, when it arranges, only need to guarantee to have certain distance between itself and guiding element 4, thereby make rocking bar 3 be directed to and do the used time and can swing around hinged center at guiding element 4.
in the time arranging, can make radial dimension between cam path 23 and the shaft axis of cam body 1 is constantly to change, as being set to the eccentric circle shape in the present embodiment, can make like this distance of the hinged hinged centre distance cam path 23 in frame 1 of rocking bar 3 constantly change.Like this, when inner conical surface cam 2 under outside motivational drive in the time that Pivot Point Center line rotates, the guiding element 4 of rocking bar 3 upper ends is under the effect of cam path 23 and inner conical surface 22, rocking bar 3 just swings around its hinged center.
owing to adopting inner conical surface cam 2, the amplitude of fluctuation of rocking bar 3, that is rocking bar 3 angular displacement of exporting, with respect to traditional cylindrical cam slotted link mechanism, disk cam slotted link mechanism and outer spherical surface slotted link mechanism etc., can improve significantly.
the same with other cam rocker arm mechanisms, in this inner conical surface cam rocker arm mechanism, the extension curve of cam path 23 can design as required, therefore rocking bar 3 is exported angular displacement, velocity and acceleration etc. can have multiple variation, this compares traditional crank-connecting rod-slotted link mechanism, and its technical performance index significantly improves.In addition, shown in Figure 1, in the present embodiment, cam path 23 is closed shape, and like this, rocking bar 3 does not need just can realize by external force the backhaul of rocking bar 3, and without as needing an additional cam to form locking device in some cam rocker arm mechanism in prior art, thereby relatively simplify mechanism.
the processing of inner conical surface cam 2 can be by multi-axis NC machining technology, and the processing of inner conical surface 22 and cam path 23 is processed by the mode of numerical control programming, and its anufacturability is good, basic identical with cylindrical cam of the prior art, globoid cam etc.
according to the different demands such as load and working life, guiding element 4 can be set to the one in cylinder termination, bulb termination, cylindrical roller, spherical roller, in the time that guiding element 4 is cylinder termination or bulb termination, its structure is comparatively simple, but owing to being sliding friction when the relative sliding between this guiding element 4 and cam path 23, its working life is shorter; Adopt cylindrical roller or spherical roller as guiding element 4, guiding element 4 is rolling friction with cam path 23 in the time relatively moving, thereby can improve significantly its working life.
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to sum up, as how less or minimum moving link, carrying out innovative design and go out slotted link mechanism, is a technical barrier in mechanics field all the time.Because as a mechanism, moving link not only means simple in structure less, and low cost of manufacture the more important thing is that to mean functional reliability high.And inner conical surface cam rocker arm of the present invention mechanism, it only has 2 substantial motion members from kinematic meaning, be inner conical surface cam 2 and rocking bar 3, it has just realized the compound movement of slotted link mechanism with minimum mechanical component, it is simple in structure, anufacturability good, technical performance index is high, can export different displacements, speed and acceleration, can obtain larger output displacement simultaneously, overcome the defect that in prior art, slotted link mechanism exists, also filled up a blank in cam mechanism field, be also a kind of contribution concerning traditional mechanics.
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above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (5)
1. an inner conical surface cam, is characterized in that: comprise cam body, on an axle head of described cam body, have the inner conical surface along its axial indent, on described inner conical surface, offer cam path.
2. inner conical surface cam according to claim 1, is characterized in that: described cam path is closed shape on described cam body.
3. an inner conical surface cam rocker arm mechanism, be located in frame, it is characterized in that: described slotted link mechanism comprises and can be located at rotatably the inner conical surface cam in described frame, hinged rocking bar swingable in described frame around Pivot Point Center line, described inner conical surface cam comprises cam body, on one axle head of described cam body, there is the inner conical surface along its axial indent, on described inner conical surface, offer cam path, described cam path is closed shape on described cam body, one end of described rocking bar is provided with guiding element, is located in described cam path to described guiding element Spielpassung.
4. inner conical surface cam rocker arm according to claim 3 mechanism, is characterized in that: on the hinged rotary centerline that is centered close to described cam body of described rocking bar in described frame.
5. inner conical surface cam rocker arm according to claim 3 mechanism, is characterized in that: described guiding element is the one in cylinder termination, bulb termination, cylindrical roller, spherical roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410032496.0A CN103775606A (en) | 2014-01-23 | 2014-01-23 | Inner conical surface cam and inner conical surface cam rocker mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410032496.0A CN103775606A (en) | 2014-01-23 | 2014-01-23 | Inner conical surface cam and inner conical surface cam rocker mechanism |
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| Publication Number | Publication Date |
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| CN103775606A true CN103775606A (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410032496.0A Pending CN103775606A (en) | 2014-01-23 | 2014-01-23 | Inner conical surface cam and inner conical surface cam rocker mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107674A (en) * | 2019-06-05 | 2019-08-09 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | A kind of double-track cam mechanism |
Citations (6)
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| US4891998A (en) * | 1988-06-20 | 1990-01-09 | Santa Barbara Research Center | Motion conversion apparatus |
| EP1056167A2 (en) * | 1999-05-27 | 2000-11-29 | Harness System Technologies Research, Ltd. | Terminal mounting machine and apparatus for manufacturing wire harness |
| CN2611398Y (en) * | 2003-04-29 | 2004-04-14 | 王玉麟 | Driving structure of disk-sewing machine |
| CN101305871A (en) * | 2008-07-11 | 2008-11-19 | 湖南山河智能机械股份有限公司 | Universal swinging chair |
| CN202163986U (en) * | 2011-06-15 | 2012-03-14 | 吴华 | Improved cam driving mechanism |
| CN203703049U (en) * | 2014-01-23 | 2014-07-09 | 苏州大学 | Inner cone cam and rocker mechanism with inner cone cam |
-
2014
- 2014-01-23 CN CN201410032496.0A patent/CN103775606A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4891998A (en) * | 1988-06-20 | 1990-01-09 | Santa Barbara Research Center | Motion conversion apparatus |
| EP1056167A2 (en) * | 1999-05-27 | 2000-11-29 | Harness System Technologies Research, Ltd. | Terminal mounting machine and apparatus for manufacturing wire harness |
| CN2611398Y (en) * | 2003-04-29 | 2004-04-14 | 王玉麟 | Driving structure of disk-sewing machine |
| CN101305871A (en) * | 2008-07-11 | 2008-11-19 | 湖南山河智能机械股份有限公司 | Universal swinging chair |
| CN202163986U (en) * | 2011-06-15 | 2012-03-14 | 吴华 | Improved cam driving mechanism |
| CN203703049U (en) * | 2014-01-23 | 2014-07-09 | 苏州大学 | Inner cone cam and rocker mechanism with inner cone cam |
Non-Patent Citations (1)
| Title |
|---|
| 帕姆利: "《机械设计零件与实用装置图册》", 1 April 2013, article "与轴连接的球面凸轮" * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107674A (en) * | 2019-06-05 | 2019-08-09 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | A kind of double-track cam mechanism |
| CN110107674B (en) * | 2019-06-05 | 2024-03-01 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Double-sided cam mechanism |
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Application publication date: 20140507 |