CN108006180A - One kind swings direct acting dual output space cone column cam mechanism - Google Patents
One kind swings direct acting dual output space cone column cam mechanism Download PDFInfo
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- CN108006180A CN108006180A CN201711413059.3A CN201711413059A CN108006180A CN 108006180 A CN108006180 A CN 108006180A CN 201711413059 A CN201711413059 A CN 201711413059A CN 108006180 A CN108006180 A CN 108006180A
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- roller
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- follower
- rack
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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
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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Abstract
The invention discloses one kind to swing direct acting dual output space cone column cam mechanism, the swing direct acting dual output space cone column cam mechanism includes rack, cam driving link, roller and translating follower, cam driving link is installed in rack and is provided with roller groove thereon, roller is connected with roller groove both sides working profile higher pair, roller is connected with translating follower by revolute pair, the translating follower is also associated with middle swinging block by revolute pair, middle swinging block is connected with oscillating follower by prismatic pair, and oscillating follower one end is connected by revolute pair with rack.The present invention realizes in same cam driving link by being bored in translating follower on column space cam in increase by one middle swinging block and oscillating follower and the output of same working profile is swung and two kinds of coupled movements of direct acting.
Description
Technical field
The present invention relates to one kind to swing direct acting dual output space cone column cam mechanism, belongs to space cam technical field.
Background technology
Spatial cam can realize that accurate movement transmission and control, transmission capacity are strong, compact-sized, high because it has
Reliability, the remarkable advantage of low cost are widely used in all kinds of engineering goods.At present, spatial cam can be divided into space
Column cam mechanism, space index cam mechanism etc. are bored, wherein, column cam mechanism is bored with the forms of motion of its driven member not in space
Together, translating follower space cone column cam mechanism and oscillating follower space cone column two subclasses of cam mechanism can be sub-divided into
Type, the output forms of motion of its driven member is respectively the translation along boning out and the rotation around dead axle.
Fig. 1 bores column space cam mechanism for oscillating follower, and Fig. 2 bores column space cam mechanism for translating follower, 1 in figure
It is cam driving link, 2 be roller, and 3 be driven member.Roller is installed in the working profile groove of cam driving link, and cam is former dynamic
Part is rotated around own axes, and specific working profile promotes roller to drive driven member by the predetermined characteristics of motion swing and straight
Dynamic movement.
Comparison diagram 1 and Fig. 2 understand that column cam mechanism is bored because its structure limits in current space, is only capable of exporting direct acting respectively
And oscillating motion, the application scenario for needing two kinds of movements at the same time, it is necessary to direct acting cam mechanism and oscillating cam is respectively configured
Mechanism, so that the problems such as bringing complicated in mechanical structure, weight increase, is difficult to install, certainly will increase design difficulty and manufacture cost.
The content of the invention
It is an object of the invention to provide one kind to swing direct acting dual output space cone column cam mechanism, space cone column cam
Mechanism can be realized with same cam driving link and same working profile to be swung and two kinds of coupled movements outputs of direct acting.
The purpose of the present invention is what is be achieved through the following technical solutions：
One kind swing direct acting dual output space cone column cam mechanism, including rack, cam driving link, roller and direct acting are driven
Part, the cam driving link are installed in rack by revolute pair and are provided with roller groove thereon, and roller works with roller groove both sides
Profile surface higher pair connects, and roller is connected with translating follower by revolute pair, and translating follower is installed in rack by prismatic pair,
The translating follower is also associated with middle swinging block by revolute pair, and middle swinging block is connected with oscillating follower by prismatic pair,
Oscillating follower one end is connected by revolute pair with rack, and when cam driving link is rotated along own axes, roller drives direct acting
Driven member moves along a straight line, while swing component does dead axle swing around rack.
Further, the cam driving link is cylindrical cam or conical cam.
Further, the roller is cylindrical roller or taper roller.
The motion principle of the present invention：When cam driving link is rotated along own axes, the working profile of roller groove both sides is driven
Dynamic roller moves reciprocatingly, and roller drives translating follower to move along a straight line, meanwhile, middle swinging block follows translating follower to move
Dynamic, swing component does dead axle swing around rack.
The present invention by translating follower bore on column space cam mechanism swinging block and oscillating follower among increase by one,
And three planar lower pairs, under conditions of holding mechanism number of degrees of freedom, is constant, it can be achieved that with same cam driving link and same
Working profile output is swung and two kinds of coupled movements of direct acting, and two kinds of movements each action, is independent of each other；With it is simple in structure,
It is light-weight, easy for installation, manufacture and design that difficulty is low and the advantages such as cost is low.
Brief description of the drawings
Fig. 1 is the structure diagram that existing oscillating follower bores column space cam mechanism.
Fig. 2 is the structure diagram that existing translating follower bores column space cam mechanism.
Fig. 3 is the structure diagram of roller.
Fig. 4 is the structure diagram of the present invention.
Fig. 5 is the schematic top plan view of the present invention.
Fig. 6 direct acting and oscillating motion rule graph of a relation
Marked in figure：1st, conical cam；2nd, taper roller；3rd, direct acting bar；4th, middle swinging block；5th, oscillating rod；6th, rack.
Embodiment
As shown in Figure 3, Figure 4, it is convex to include circular cone for swing direct acting dual output space cone column cam mechanism provided in this embodiment
Wheel 1, taper roller 2, direct acting bar 3, middle swinging block 4, oscillating rod 5 and rack 6, conical cam 1 are installed on rack 6 by revolute pair
Roller groove is provided with above and thereon, taper roller 2 is located in roller groove and is connected with roller groove both sides working profile higher pair, circular cone rolling
Son 2 is connected with direct acting bar 3 by revolute pair, and direct acting bar 3 is installed in rack 6 by prismatic pair, and middle swinging block 4 passes through revolute pair
It is connected with direct acting bar 3, oscillating rod 5 is connected by prismatic pair with middle swinging block 4, and the other end of oscillating rod 5 is connected by revolute pair
In rack 6.
As half cone-apex angle γ of conical cam=0, cam driving link is cylindrical cam, taper roller half cone apex angle α=0
When, roller is cylindrical roller.
During cam mechanism movement of the present invention, the angle and two bar intersection points of direct acting bar 3 and oscillating rod 5 are turned round to oscillating rod 5
The distance meeting consecutive variations of axis, therefore be intermediary using middle swinging block 4, it is revolute pair between middle swinging block 4 and direct acting bar 3,
It can ensure the variable angle of direct acting bar 3 and oscillating rod 5, be prismatic pair between middle swinging block 4 and oscillating rod 5, it is ensured that two bar intersection points
To the distance change of 5 pivot center of oscillating rod, therefore cam mechanism of the present invention can run well.
The present invention swings all moving links in direct acting dual output spatial cam and only does plane motion, therefore mechanism
Freedom calculation formula is：
F=n × 3-pL×2-pH×1-p'
In formula, F is mechanism freedom, and n is moving link quantity, PLFor low secondary (revolute pair and prismatic pair) quantity, PHFor height
Secondary quantity, P ' are isolated degree of freedom.
In cam mechanism of the present invention, moving link includes conical cam 1, taper roller 2, direct acting bar 3, middle swinging block 4
With oscillating rod 5, n=5；Between the low secondary revolute pair included between conical cam 1 and rack 6, taper roller 2 and direct acting bar 3
The prismatic pair between revolute pair, middle swinging block 4 and oscillating rod 5, oscillating rod 5 between revolute pair, direct acting bar 3 and middle swinging block 4
The prismatic pair between revolute pair, direct acting bar 3 and rack 6 between rack 6, PL=6；Higher pair includes taper roller 2 and cam
Higher pair between working profile, PH=1；In view of taper roller 2, the rotation of itself does not influence follower motion, for part freely
Degree, therefore P ,=1；
Calculating mechanism freedom of the invention is：
F=n × 3-pL×2-pH× 1-p'=5 × 3-6 × 2-1 × 1-1=1
The institution freedom number of degrees of the present invention are 1, i.e., when cam driving link number is 1, the direct acting of mechanism is exported and swung defeated
Go out what the characteristics of motion (transmission function) was to determine, and there is correlation, it is not independent of one another.To discuss that two kinds of characteristics of motion (pass
Delivery function) between relation and using the characteristics of motion solve cam work profile surface parametric equation, can to carry out cam design
By roller be thought of as with translating follower fixed connection, so as to eliminate isolated degree of freedom, oscillating follower, which is made to become radius, swings fortune
It is dynamic.
Relation between linear motion rule and change radius oscillating motion rule is as shown in figure 5, as can be seen from FIG. 5, moving
In plane, oscillating motion of the linear motion with becoming radius is of equal value.S in figure1For the translating follower characteristics of motion,For oscillating motion
Rule,For cam angle, with oscillating motion rule Unified Expression to be that swing form sets to carry out cam by linear motion
Meter, introduces varied radius function b1=b1(), its initial length is b；Therefore, direct acting and the Unified Expression method swung are obtained：
Follower motion functional relation：
Varied radius function：
Driven member rotation angle correction：
The derivation of the space cone general contour surface equatin of column cam is as follows：
According to family of surfaces envelope theory, under the coordinate system shown in Fig. 1, z-axis is overlapped with cam shaft, x-axis position
In on cam shaft and the common vertical line of swing rod shaft (two distance between axles are a).If x, y, the unit vector of z coordinate axis is respectivelyThe angle of swing rod shaft and xz planes is 90 ° of+γ, and μ is distance of the roller baseplane to x-axis, away from roller baseplane
Highly it is radius of roller r on the position of δ1+ δ tg α, coordinate origin are located at the intersection point of x-axis and cam shaft.
Assuming that cam transfixion, roller follower are being as angular displacement around z-axisWhile opposite direction rotates, around swing rod
Axis is as angular displacementSwing, at this time the surface curve race of driven member can be expressed as parametric equation：
Wherein, 0≤θ≤π,For cam angle (self-movement parameter).
According to family of surfaces envelope theory, can be calculated：
(r in above formula1+ δ tg α) ＞ 0, calculate nowMixed product can be tried to achieve：
OrderAbove formula both sides are multiplied by the same timeObtain：
Make again：
It can be obtained by (3)：
H sin θ+I cos θ+J=0
Formula (4) is substituted into θ is eliminated in formula (2), you can obtain the cam contour surface equation expressed with parameter mode.It is denoted as：
Fortune that the present invention can export two kinds of form differences at the same time using same cam driving link, the characteristics of motion is mutually related
It is dynamic.Using above-mentioned mathematical model, by defining the mathematical connection between two kinds of characteristics of motion equations, by linear motion and oscillating motion
Characteristics of motion function expressed with unified interspace analytic geometry surface parameter equation (formula 5), carry out cam design when, only
Relevant design parameter need to be substituted into space analysis mechanism equation, you can it is wide to try to achieve the cam work expressed in the form of three-dimensional coordinate
Face, solving result can be introduced directly into any common Three-dimensional Design Software, and such as UG, SolidWorks, are cam parts
CAD and digital control processing provide easy-to-use design means.
The above is only the preferred embodiment of the present invention, but protection scope of the present invention is not limited thereto, any
The transformation and replacement that are carried out based on technical solution provided by the present invention and inventive concept should all cover the protection model in the present invention
In enclosing.
Claims (3)
1. one kind swing direct acting dual output space cone column cam mechanism, including rack, cam driving link, roller and direct acting are driven
Part, the cam driving link are installed in rack by revolute pair and are provided with roller groove thereon, and roller works with roller groove both sides
Profile surface higher pair connects, and roller is connected with translating follower by revolute pair, and translating follower is installed in rack by prismatic pair,
It is characterized in that：The translating follower is also associated with middle swinging block by revolute pair, and middle swinging block is connected with by prismatic pair
Oscillating follower, the other end of oscillating follower are connected by revolute pair with rack, when cam driving link is rotated along own axes
When, roller drives translating follower to move along a straight line, while swing component does dead axle swing around rack.
2. swing direct acting dual output space cone column cam mechanism according to claim 1, it is characterised in that：The cam is former
Moving part is cylindrical cam or conical cam.
3. swing direct acting dual output space cone column cam mechanism according to claim 1, it is characterised in that：The roller is
Cylindrical roller or taper roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711413059.3A CN108006180A (en) | 2017-12-24 | 2017-12-24 | One kind swings direct acting dual output space cone column cam mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711413059.3A CN108006180A (en) | 2017-12-24 | 2017-12-24 | One kind swings direct acting dual output space cone column cam mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN108006180A true CN108006180A (en) | 2018-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711413059.3A Pending CN108006180A (en) | 2017-12-24 | 2017-12-24 | One kind swings direct acting dual output space cone column cam mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216070A (en) * | 2021-05-08 | 2021-08-06 | 刘亚 | Foreign matter removing device for urban rail |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000179653A (en) * | 1998-12-16 | 2000-06-27 | Matsushita Electronics Industry Corp | Plate cam mechanism |
| TW450151U (en) * | 1999-12-07 | 2001-08-11 | Nat Science Council | Roller-typed cam divider capable of rotating and shifting two degrees of freedom |
| CN1433875A (en) * | 2003-03-13 | 2003-08-06 | 上海交通大学 | Manipulator for annealing and antomatic blanking of car lamp tube |
| CN2696836Y (en) * | 2003-09-08 | 2005-05-04 | 李功山 | Single wire binding machine for documents |
| JP2009243694A (en) * | 2009-07-31 | 2009-10-22 | Fukushima Univ | Three-dimensional cam mechanism |
| CN102720815A (en) * | 2012-06-15 | 2012-10-10 | 中国科学院长春光学精密机械与物理研究所 | Cam mechanism capable of eliminating cam groove and roller clearance |
| CN204915597U (en) * | 2015-07-16 | 2015-12-30 | 田春荣 | Combined type wiper |
| CN105840759A (en) * | 2016-05-17 | 2016-08-10 | 江苏科技大学 | Angle-enlargeable intermittent swing mechanism |
| CN207634634U (en) * | 2017-12-24 | 2018-07-20 | 成都大学 | Bore column cam mechanism in a kind of swing direct acting dual output space |
-
2017
- 2017-12-24 CN CN201711413059.3A patent/CN108006180A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000179653A (en) * | 1998-12-16 | 2000-06-27 | Matsushita Electronics Industry Corp | Plate cam mechanism |
| TW450151U (en) * | 1999-12-07 | 2001-08-11 | Nat Science Council | Roller-typed cam divider capable of rotating and shifting two degrees of freedom |
| CN1433875A (en) * | 2003-03-13 | 2003-08-06 | 上海交通大学 | Manipulator for annealing and antomatic blanking of car lamp tube |
| CN2696836Y (en) * | 2003-09-08 | 2005-05-04 | 李功山 | Single wire binding machine for documents |
| JP2009243694A (en) * | 2009-07-31 | 2009-10-22 | Fukushima Univ | Three-dimensional cam mechanism |
| CN102720815A (en) * | 2012-06-15 | 2012-10-10 | 中国科学院长春光学精密机械与物理研究所 | Cam mechanism capable of eliminating cam groove and roller clearance |
| CN204915597U (en) * | 2015-07-16 | 2015-12-30 | 田春荣 | Combined type wiper |
| CN105840759A (en) * | 2016-05-17 | 2016-08-10 | 江苏科技大学 | Angle-enlargeable intermittent swing mechanism |
| CN207634634U (en) * | 2017-12-24 | 2018-07-20 | 成都大学 | Bore column cam mechanism in a kind of swing direct acting dual output space |
Non-Patent Citations (1)
| Title |
|---|
| 唐茂;李俭;张跃华;唐强;: "建立摆直动从动件空间凸轮机构统一数学模型的方法研究", 成都大学学报(自然科学版), no. 04, pages 334 - 339 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216070A (en) * | 2021-05-08 | 2021-08-06 | 刘亚 | Foreign matter removing device for urban rail |
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