CN208819508U - A cam reversal method demonstrator - Google Patents
A cam reversal method demonstrator Download PDFInfo
- Publication number
- CN208819508U CN208819508U CN201820172104.4U CN201820172104U CN208819508U CN 208819508 U CN208819508 U CN 208819508U CN 201820172104 U CN201820172104 U CN 201820172104U CN 208819508 U CN208819508 U CN 208819508U
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- CN
- China
- Prior art keywords
- rod
- crank
- tie
- planetary gear
- cam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a kind of cam reversal process demonstrators.The utility model bracket connecting bracket panel, main shaft is rotatablely connected by support panel and centre wheel, tie-rod one end is fixedly connected on main shaft, and planet wheel spindle passes through axis hole and tie-rod rotation connection in the middle part of tie-rod, centre wheel engagement planetary gear gear, planetary gear connects planet wheel spindle, crank connects planet wheel spindle, and crank is connect through crank connecting link axis with link rotatable, and connecting rod is rotatablely connected through connecting rod slider axis and sliding block, guide rail is slidably connected with sliding block, and guide rail is fixed on tie-rod.The utility model, which overcomes, inverts law limitation without dynamic demonstration cam in kind.Planetary gear train and the ingenious combination of slider-crank mechanism are formed a kind of cam mechanism by the utility model, can show cam principle of inversion by dynamic demonstration.
Description
Technical field
The utility model relates to a kind of cam reversal process demonstrator, it can show that a kind of cam is anti-in mechanical principle teaching
Robin principle.
Background technique
In the movement combination mode of many of theory of mechanics mechanism, wherein the introduction of the correlation theory of cam is a weight
The knowledge point wanted can have material object display Mechanism Combination motion principle energy as in one important knowledge point of mechanical principle teaching
Enough learner is helped quickly and effectively to grasp relevant knowledge.
Before the present utility model, for cam mechanism reversal process introduce it is less, with planetary gear train and song
Handle slide block mechanism does not have substantially in conjunction with come the device that shows cam mechanism, and there is no dynamic demonstration cam reversal processes in kind to lack
It falls into.
Utility model content
The purpose of this utility model, which is that, overcomes drawbacks described above, proposes a kind of cam reversal process demonstrator.
The technical solution of the utility model is:
A kind of cam reversal process demonstrator, bracket connect pedestal, are mainly characterized by, bracket connecting bracket face
Plate, main shaft are rotatablely connected by support panel and centre wheel, and tie-rod one end is fixedly connected on main shaft, and planet wheel spindle passes through tie-rod
The axis hole and tie-rod at middle part are rotatablely connected, and centre wheel engages planetary gear gear, and planetary gear connects planet wheel spindle, and crank connects planet
Wheel shaft, crank are connect through crank connecting link axis with link rotatable, and connecting rod is rotatablely connected through connecting rod slider axis and sliding block, guide rail and sliding block
It is slidably connected, guide rail is fixed on tie-rod.
The main shaft, tie-rod, centre wheel, planetary gear, planet wheel spindle form planetary gear train.
The crank, connecting rod, sliding block, guide rail, planet wheel spindle, crank connecting link axis, connecting rod slider axis form crank block machine
Structure.
Paintbrush is connected on the sliding block.
The advantages of the utility model and effect are to form planetary gear train with the ingenious combination of slider-crank mechanism a kind of convex
Mechanism is taken turns, cam principle of inversion can be shown by dynamic demonstration.
Detailed description of the invention
Fig. 1 --- the utility model principle schematic diagram.
Fig. 2 --- the utility model structure diagram.
Fig. 3 the utility model tie-rod rotates counterclockwise the i.e. mechanism paintbrush of the location of 0 Du Shi mechanism state from center
Wheel axle center is displaced location diagram recently.
Fig. 4 --- the utility model tie-rod rotates counterclockwise the location of 90 Du Shi mechanisms status diagram.
Fig. 5 --- the location of mechanism state i.e. mechanism paintbrush when the utility model tie-rod rotates counterclockwise 180 degree
Location diagram is farthest displaced from centre wheel axle center.
Fig. 6 --- the utility model tie-rod rotates counterclockwise the location of 270 Du Shi mechanisms status diagram.
The corresponding label of each component in figure are as follows:
Pedestal 1, bracket 2, support panel 3, handle 4, main shaft 5, tie-rod 6, centre wheel 7, planetary gear 8, planet wheel spindle 9 are bent
Handle 10, crank connecting link axis 11, connecting rod 12, connecting rod slider axis 13, sliding block 14, paintbrush 15, guide rail 16, pin shaft 17 before guide rail, guide rail
Rear pin shaft 18.
Specific embodiment
As shown in figures 1 to 6:
A kind of cam reversal process demonstrator, including pedestal 1, bracket 2, support panel 3, handle 4, main shaft 5, tie-rod 6, center
Wheel 7, planetary gear 8, planet wheel spindle 9, crank 10, crank connecting link axis 11, connecting rod 12, connecting rod slider axis 13, sliding block 14, paintbrush 15,
Guide rail 16, pin shaft 17 before guide rail, guide rail rear pin shaft 18.
Bracket 2 is fixed on pedestal 1, and bracket 2 and support panel 3 are fixed together, and centre wheel 7 is fixed on support panel 3
On, centre bore and the centre bore on centre wheel 7 are concentric in support panel 3, and main shaft 5 passes through 3 centre bore of support panel and stent cover
Plate 3 is rotatablely connected, and main shaft 5 is rotatablely connected by 7 centre bore of centre wheel and centre wheel 7, and 6 one end of tie-rod is fixed on main shaft 5, row
8 axis of star-wheel passes through the axis hole at the middle part of tie-rod 6 and tie-rod 6 is rotatablely connected, centre wheel 7 and the engagement of 8 gear of planetary gear, planetary gear 8 with
Planet wheel spindle 9 is fixedly connected, and crank 10 is fixedly connected with planet wheel spindle 9, and planetary gear 8, planet wheel spindle 9,10 three of crank fix
Together, crank 10 and connecting rod 12 pass through hole thereon through crank connecting link axis 11 and are rotatablely connected, and connecting rod 12 and sliding block 14 are through connecting rod
Sliding block axis 13 is by hole rotation connection thereon, and the hole that guide rail 16 penetrates through on sliding block 14 is slidably connected with sliding block 14, and guide rail 16 passes through
Pin shaft 17 and guide rail rear pin shaft 18 are fixed on tie-rod by the hole of guide rail two sides before guide rail.
Main shaft 5, tie-rod 6, centre wheel 7, planetary gear 8, planet wheel spindle 9 form planetary gear train, crank 10, connecting rod 12, sliding block
14, guide rail 16, planet wheel spindle 9, crank connecting link axis 11, connecting rod slider axis 13 form slider-crank mechanism, planetary gear 8, planetary gear
Axis 9,10 three of crank are fixed together, thus planetary gear train is cleverly combined with slider-crank mechanism constitute it is a kind of convex
Wheel demonstration mechanism, and paintbrush 15 is fixed on sliding block 14 and records motion profile.
Handle 4 is fixedly connected with main shaft 5, and main shaft 5 is fixedly connected with tie-rod 6, and centre wheel 7 is fixed in support panel 3, branch
Centre bore and the centre bore on centre wheel 7 are concentric on frame panel 3, and main shaft 5 passes through 3 centre bore of support panel and 3 turns of support panel
Dynamic connection, main shaft 5 are rotatablely connected by 7 centre bore of centre wheel and centre wheel 7, planet wheel spindle 9 pass through axis hole in the middle part of tie-rod with
Tie-rod 6 is rotatablely connected, centre wheel 7 and the engagement of 8 gear of planetary gear.
When handle 4 rotates counterclockwise, tie-rod 6 is driven to rotate counterclockwise, planetary gear 8 is rotated counterclockwise around centre wheel 7, row
Rotation while star-wheel 8 revolves around centre wheel 7.Planetary gear 8 is identical with centre wheel 7, there is the identical number of teeth and modulus, center
Take turns it is 7 fixed, from circling while planetary gear 8 circles around 7 public affairs of centre wheel.
Planet wheel spindle 9 passes through axis hole and the rotation connection of tie-rod 6 in the middle part of tie-rod 6, planetary gear 8 and the fixed company of planet wheel spindle 9
Connect, crank 10 is fixedly connected with planet wheel spindle 9, and planetary gear 8, planet wheel spindle 9,10 three of crank are fixed together, crank 10 with
Connecting rod 12 passes through hole thereon through crank connecting link axis 11 and is rotatablely connected, and connecting rod 12 and sliding block 14 pass through thereon through connecting rod slider axis 13
Hole rotation connection, guide rail 16 penetrate through sliding block on hole be slidably connected with sliding block 14, guide rail 16 is through pin shaft 17 and guide rail before guide rail
Rear pin shaft 18 is fixed on tie-rod 6 by the hole of guide rail two sides.
When crank 10 rotates, connecting rod 12 is driven to swing, connecting rod 12 with movable slider 14 along 16 linear reciprocating motion of guide rail, by
In planetary gear 8 while revolving around centre wheel 7 autobiography, and planetary gear 8, planet wheel spindle 9,10 three of crank are fixed together,
So planetary gear 8 is around planetary gear center autobiography, for crank 10 around the rotation of planetary gear central synchronous, planetary gear 8 and centre wheel 7 are complete simultaneously
It is exactly the same, there are the identical number of teeth and modulus, circles certainly while planetary gear 8 circles around 7 public affairs of centre wheel.Crank 10 is around planet
Wheel center rotating one week, sliding block 14 move back and forth a cycle along guide rail.
From the point of view of movement in conjunction with entire mechanism, tie-rod 6 is driven to rotate when handle 4 rotates, tie-rod 6 drives planetary gear 8 in
Heart wheel 7 revolves, while 8 rotation of planetary gear, and crank 10 is synchronous, the drive swing of connecting rod 12 of crank 10 with the rotation of planetary gear 8,
Connecting rod 12 is moved back and forth with movable slider 14 along guide rail, and slider-crank mechanism is revolving simultaneously around centre wheel 7, in conjunction with whole sliding block 14
Motion path realize from from centre wheel axle center least displacement move to from the maximum displacement of centre wheel axle center move back again initially from
From a rise and backhaul is equivalent at the least displacement of centre wheel axle center, a kind of cam profile is formd.
Tie-rod 6 drives entire mechanism kinematic once week around 5 axis rotation of main shaft, and one so as to complete cam movement pushes away
Journey and a backhaul form the top one week track of cam.
Planetary gear 8 is identical with centre wheel 7, there is the identical number of teeth and modulus, and centre wheel is fixed, and planetary gear 8 surrounds
It circles certainly while 7 public affairs of centre wheel circle,
Tie-rod 6 can rotate clockwise, and can also rotate counterclockwise, can be intuitive according to the structure composition of the cam mechanism
Demonstrate cam principle of inversion.
The utility model application process brief description:
When tie-rod 6 rotates counterclockwise 0 degree, crank 10, connecting rod 12 are conllinear, and sliding block 14 is displaced recently from centre wheel axle center
Place, it is top in least displacement state to be equivalent to cam follower for mechanism at this time.
When tie-rod 6 rotates counterclockwise 90 degree, drives 8 public affairs of planetary gear to turn 90 degrees while the wheel of planetary gear 8 is turn 90 degrees certainly, crank
10 around 90 degree of 8 axis rotation of planetary gear, and crank 10 is moved with movable slider 14 along guide rail through connecting rod 12, and mechanism is equivalent to cam at this time
One of mechanism rise state.
When tie-rod 6 rotates counterclockwise 180 degree, driving planetary gear revolution 180 degree, planetary gear wheel is bent from turnback simultaneously
Handle rotates 180 degree around planetary axle center, and crank is moved through connecting rod band movable slider along guide rail, and crank connecting link is conllinear, and sliding block is from center
Axle center is taken turns up to farthest displacement, it is top in maximum displacement state to be equivalent to cam follower for mechanism at this time
When tie-rod 6 rotates counterclockwise 270 degree, 270 degree of planetary gear revolution, 270 degree of planetary gear wheel rotation simultaneously is driven, it is bent
Handle rotates 270 degree around planetary axle center, and crank is moved through connecting rod band movable slider along guide rail, and mechanism is equivalent to cam mechanism and returns at this time
One of journey state.
When tie-rod 6 rotates counterclockwise 360 degree, 350 degree of planetary gear revolution, 350 degree of planetary gear wheel rotation simultaneously is driven, it is bent
Handle rotates 360 degree around planetary axle center, and crank is moved through connecting rod band movable slider along guide rail, and crank connecting link is conllinear, and sliding block is from center
Axle center is taken turns up to displacement recently, it is top in least displacement state to be equivalent to cam follower for mechanism at this time.
Claims (4)
1. a kind of cam reversal process demonstrator, bracket connects pedestal, which is characterized in that bracket connecting bracket panel, main shaft pass through
Support panel and centre wheel are rotatablely connected, and tie-rod one end is fixedly connected on main shaft, and planet wheel spindle passes through the axis hole in the middle part of tie-rod
It is rotatablely connected with tie-rod, centre wheel engages planetary gear gear, and planetary gear connects planet wheel spindle, and crank connects planet wheel spindle, crank
It being connect through crank connecting link axis with link rotatable, connecting rod is rotatablely connected through connecting rod slider axis and sliding block, and guide rail is slidably connected with sliding block,
Guide rail is fixed on tie-rod.
2. a kind of cam reversal process demonstrator according to claim 1, which is characterized in that the main shaft, tie-rod, center
Wheel, planetary gear, planet wheel spindle form planetary gear train.
3. a kind of cam reversal process demonstrator according to claim 1, which is characterized in that the crank, connecting rod, sliding block,
Guide rail, planet wheel spindle, crank connecting link axis, connecting rod slider axis form slider-crank mechanism.
4. a kind of cam reversal process demonstrator according to claim 1, which is characterized in that connect paintbrush on the sliding block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820172104.4U CN208819508U (en) | 2018-01-29 | 2018-01-29 | A cam reversal method demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820172104.4U CN208819508U (en) | 2018-01-29 | 2018-01-29 | A cam reversal method demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208819508U true CN208819508U (en) | 2019-05-03 |
Family
ID=66267645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820172104.4U Expired - Fee Related CN208819508U (en) | 2018-01-29 | 2018-01-29 | A cam reversal method demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208819508U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111243418A (en) * | 2020-02-26 | 2020-06-05 | 浙江大学城市学院 | Experiment teaching instrument and experiment method for demonstrating design of disc-shaped cam profile by reversal method |
-
2018
- 2018-01-29 CN CN201820172104.4U patent/CN208819508U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111243418A (en) * | 2020-02-26 | 2020-06-05 | 浙江大学城市学院 | Experiment teaching instrument and experiment method for demonstrating design of disc-shaped cam profile by reversal method |
| CN111243418B (en) * | 2020-02-26 | 2022-02-01 | 浙江大学城市学院 | Experiment teaching instrument and experiment method for demonstrating design of disc-shaped cam profile by reversal method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190503 Termination date: 20220129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |