CN1598358A - Planetary calibrated cam mechanism - Google Patents
Planetary calibrated cam mechanism Download PDFInfo
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- CN1598358A CN1598358A CN 200410020216 CN200410020216A CN1598358A CN 1598358 A CN1598358 A CN 1598358A CN 200410020216 CN200410020216 CN 200410020216 CN 200410020216 A CN200410020216 A CN 200410020216A CN 1598358 A CN1598358 A CN 1598358A
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- cam
- pinwheel
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- slice
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Abstract
The invention is a planet graduation cam mechanism which relates to the structure of intermittent motion, and relates to the graduation cam mechanism in concrete the invention adopts the technical proposal is that two or more than two bent shaft with eccentric center, one or more than one driving ring board is connected to a output shaft by cam stitich wheel set structure; one of the two or more than two bent shaft with eccentric center is input shaft, the axes of them are not in the same line in the vertical plane, each two of them are formed with the driving ring board to parallelogram, they and the output shaft are not concentric. The invention is mainly used to produce graduation cam mechanism which has simple structure, great number of divisions 30-50 or more.
Description
Technical field
The present invention relates to realize the mechanism of intermittent movement, specifically relate to indexing cam mechanism.
Background technique
Indexing cam mechanism is to adopt cam mechanism to realize the mechanism of intermittent movement, is widely used in various multi-position automatics and the walking machinery, and be the critical component in these automated machines.Existing indexing cam mechanism comprises three types, i.e. parallel indexing cam mechanism, ferguson cam mechanism and cylindrical indexing cam mechanism.The outer gearing parallel indexing cam mechanism is subjected to structural restriction, and its number of divisions is difficult to surpass 8～12.Ferguson cam mechanism adopts space cam, need use special device processing, thereby manufacture cost is higher in addition; And because structural restriction, its number of divisions generally is no more than 12.Though the attainable number of divisions of cylindrical indexing cam mechanism is bigger, the driven disc rotary inertia was big when the number of divisions was big, should not be used to run up, thereby the application area of such mechanism still was subjected to certain restriction.The subject matter of existing indexing cam mechanism is to be difficult to realize the big number of divisions with compact structure.
Summary of the invention
For overcoming the deficiencies in the prior art, the object of the present invention is to provide the indexing cam mechanism of realizing big number of divisions dividing movement with compact structure.
The technical solution used in the present invention is, planet scale division cam structure comprises: the eccentric crankshaft of band more than two or two, the above transmission ring flat-plate of a slice or a slice connects an output shaft by cam-pinwheel auxiliary structure, there is one to be input shaft in the crankshaft of band off-centre more than two or two, not on same straight line, per two of the eccentric crankshaft of band is formed parallel-crank mechanism with the transmission ring flat-plate to the eccentric crankshaft axis of band more than two or two in the projection on the vertical surface more than two or two; Eccentric crankshaft and the output shaft decentraction of band more than two or two.
Wherein, crankshaft can be two, and the transmission ring flat-plate can be a slice, and two crankshafts and a slice transmission ring flat-plate are formed parallel-crank mechanism;
Cam-pinwheel auxiliary structure is: the output shaft of the transmission ring flat-plate of a slice band cam ring and an outer pinwheel of band, and cam ring, outer pinwheel form cam-pinwheel pair;
Cam-pinwheel auxiliary structure is also: the output shaft of the transmission ring flat-plate of pinwheel and a band external cam in a slice band, and interior pinwheel, external cam form cam-pinwheel pair;
Pin tooth on the pinwheel in cam-pinwheel auxiliary structure is uniform by number five equilibrium on circumference of the number of divisions;
Cam in cam-pinwheel auxiliary structure is provided with according to the number of divisions and the characteristics of motion and fixed irregular flank profil line.
The present invention can bring following effect; Owing to adopt the eccentric crankshaft of band more than two or two, the transmission ring flat-plate connects an output shaft structure by cam-pinwheel auxiliary structure, thereby have simple in structure, the number of divisions big (can reach 30～50 even bigger), volume is little, in light weight, the meshing roller number is many simultaneously, bearing capacity is a big advantage, cylindrical indexing cam mechanism and interior engagement parallel indexing cam mechanism can be substituted, the outer gearing parallel indexing cam mechanism can also be substituted to a certain extent.
Description of drawings
Fig. 1 is that the layout of a kind of cam of the present invention-pinwheel pair is the shape and structure schematic representation of external cam-interior pinwheel (I type structure), and as Figure of abstract.
Fig. 2 is that the layout of a kind of cam of the present invention-pinwheel pair is the shape and structure schematic representation of cam ring-outer pinwheel (II type structure).
Fig. 3 is an a kind of embodiment's of the present invention shape and structure schematic representation.Among Fig. 3:
1: crankshaft 2: transmission ring flat-plate 3: output shaft 4: interior pinwheel 5: external cam 6: outer pinwheel 7: cam ring
Embodiment
Further specify the present invention below in conjunction with drawings and Examples.
The object of the present invention is achieved like this: a kind of planet scale division cam structure, its basic model comprise two crankshafts that band is eccentric, the output shaft of the transmission ring flat-plate of a slice band cam ring (or interior pinwheel) and an outer pinwheel (or external cam) of band.If increase the quantity of crankshaft or change its position (but will guarantee its axis in the projection on the vertical surface not on same straight line) and can form some derivation types.There is one to be input shaft in the crankshaft of two band off-centre; The crankshaft of two band off-centre and the transmission ring flat-plate of a slice band cam ring (or interior pinwheel) are formed parallel-crank mechanism; The output shaft of the transmission ring flat-plate of band cam ring (or interior pinwheel) and an outer pinwheel (or external cam) of band forms cam-pinwheel pair, cam-pinwheel pair can have external cam-interior pinwheel (I type structure) and two kinds of layouts of cam ring-outer pinwheel (II type structure), pin tooth on the pinwheel is uniform by number five equilibrium on circumference of the number of divisions, and cam is provided with according to the number of divisions and the characteristics of motion and fixed irregular flank profil line; The plane motion of the motion decision transmission ring flat-plate of input shaft, the motion of output shaft are determined by the dead axle rotation of outer pinwheel or external cam, the motion of the secondary realization of cam-pinwheel intermittent-rotation.
In Fig. 1, cam in the planet scale division cam structure-pinwheel pair is set to external cam 5-interior pinwheel 4 (I type structure), the pin tooth is uniform by number five equilibrium on circumference of the number of divisions on interior pinwheel 4, and external cam 5 is provided with according to factor such as the number of divisions and fixed irregular flank profil line.
The plane motion of interior pinwheel 4 is determined that by input shaft external cam 5 is done dead axle and rotated under the effect of interior pinwheel 4, and the flank profil line according to external cam 5 in this dead axle rotation process is realized intermittent movement by certain characteristics of motion.
In Fig. 2, cam in the planet scale division cam structure-pinwheel pair is set to cam ring 7-outer pinwheel 6 (II type structure), the pin tooth outside on the pinwheel 6 the number five equilibrium on circumference by the number of divisions uniform, cam ring 7 is provided with according to factor such as the number of divisions and fixed irregular flank profil line.
The plane motion of cam ring 7 is determined that by input shaft outer pinwheel 6 is done dead axle and rotated under the effect of cam ring 7, and the flank profil line according to cam ring 7 in this dead axle rotation process is realized intermittent movement by certain characteristics of motion.
Figure 3 shows that one embodiment of the present of invention.Present embodiment adopts I type structure, and by three crankshafts 1 (wherein one is input shaft), the output shaft 3 of the transmission ring flat-plate 2 of pinwheel 4 and a band external cam 5 is formed in a slice band.When the input shaft constant speed was turned round, the interior pinwheel 4 that drives on the transmission ring flat-plate 2 was done plane motion, and external cam 5 is done the dead axle rotation reverse with steering input shaft under the effect of interior pinwheel 4, and this moment, the angular velocity of external cam 5 changed by intermittent movement.
For example, when the application required motion to be 12 calibration, the number of pin tooth was 12, and promptly pinwheel is 12 five equilibriums, and the flank profil line on the cam is according to factor such as the number of divisions and fixed irregular flank profil line, and its number of teeth is 11.Its working procedure as mentioned above.In fact, when requiring the number of divisions to be n, pinwheel should be set to the n five equilibrium.
This invention has broad application prospects in the light industry automatic that requires big calibration, big carrying, small volume, and can substitute cylindrical indexing cam mechanism and interior engagement parallel indexing cam mechanism, can also substitute the outer gearing parallel indexing cam mechanism to a certain extent, might become the new generation product of interrupted division and stepping conveying equipment, have vast market prospect, will bring bigger economic benefit.
Claims (6)
1. planet scale division cam structure, it is characterized in that, comprise: the eccentric crankshaft of band more than two or two, the above transmission ring flat-plate of a slice or a slice connects an output shaft by cam-pinwheel auxiliary structure, there is one to be input shaft in the crankshaft of band off-centre more than two or two, not on same straight line, per two of the eccentric crankshaft of band is formed parallel-crank mechanism with the transmission ring flat-plate to the eccentric crankshaft axis of band more than two or two in the projection on the vertical surface more than two or two; Eccentric crankshaft and the output shaft decentraction of band more than two or two.
2. a kind of planet scale division cam structure according to claim 1 is characterized in that, crankshaft is two, and the transmission ring flat-plate is a slice, and two crankshafts and a slice transmission ring flat-plate are formed parallel-crank mechanism.
3. a kind of planet scale division cam structure according to claim 1 is characterized in that, cam-pinwheel auxiliary structure is: the output shaft of the transmission ring flat-plate of a slice band cam ring and an outer pinwheel of band, cam ring, outer pinwheel form cam-pinwheel pair.
4. a kind of planet scale division cam structure according to claim 1 is characterized in that, cam-pinwheel auxiliary structure is: the output shaft of the transmission ring flat-plate of pinwheel and a band external cam in a slice band, interior pinwheel, external cam form cam-pinwheel pair.
5. a kind of planet scale division cam structure according to claim 1 is characterized in that, the pin tooth on the pinwheel in cam-pinwheel auxiliary structure is uniform by number five equilibrium on circumference of the number of divisions.
6. a kind of planet scale division cam structure according to claim 1 is characterized in that, the cam in cam-pinwheel auxiliary structure is provided with according to the number of divisions and the characteristics of motion and fixed irregular flank profil line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100202160A CN100338372C (en) | 2004-07-30 | 2004-07-30 | Planetary calibrated cam mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100202160A CN100338372C (en) | 2004-07-30 | 2004-07-30 | Planetary calibrated cam mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1598358A true CN1598358A (en) | 2005-03-23 |
| CN100338372C CN100338372C (en) | 2007-09-19 |
Family
ID=34663173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100202160A Expired - Fee Related CN100338372C (en) | 2004-07-30 | 2004-07-30 | Planetary calibrated cam mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100338372C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705983B (en) * | 2009-11-17 | 2012-01-04 | 天津大学 | High-speed dividing mechanism of back connection type cam connecting rod |
| CN108131431A (en) * | 2018-01-30 | 2018-06-08 | 天津科技大学 | Two level cam indexing mechanism |
| CN108856824A (en) * | 2018-07-13 | 2018-11-23 | 陈芮 | Process the milling attachment of planetary gear |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1414268A (en) * | 2002-07-12 | 2003-04-30 | 天津大学 | Planet scale division cam structure |
-
2004
- 2004-07-30 CN CNB2004100202160A patent/CN100338372C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705983B (en) * | 2009-11-17 | 2012-01-04 | 天津大学 | High-speed dividing mechanism of back connection type cam connecting rod |
| CN108131431A (en) * | 2018-01-30 | 2018-06-08 | 天津科技大学 | Two level cam indexing mechanism |
| CN108131431B (en) * | 2018-01-30 | 2024-01-19 | 天津科技大学 | Two-stage cam indexing mechanism |
| CN108856824A (en) * | 2018-07-13 | 2018-11-23 | 陈芮 | Process the milling attachment of planetary gear |
| CN108856824B (en) * | 2018-07-13 | 2020-03-31 | 浙江鸿程传动机械有限公司 | Milling device for machining planet wheel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100338372C (en) | 2007-09-19 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SHANGHAI CHUNG HAO PAPER CO., LTD. Assignor: Tianjin University Contract record no.: 2010120000130 Denomination of invention: Planetary calibrated cam mechanism Granted publication date: 20070919 License type: Exclusive License Open date: 20050323 Record date: 20100928 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070919 Termination date: 20130730 |