CN201376206Y - High-precision dividing device - Google Patents
High-precision dividing device Download PDFInfo
- Publication number
- CN201376206Y CN201376206Y CN200920113125U CN200920113125U CN201376206Y CN 201376206 Y CN201376206 Y CN 201376206Y CN 200920113125 U CN200920113125 U CN 200920113125U CN 200920113125 U CN200920113125 U CN 200920113125U CN 201376206 Y CN201376206 Y CN 201376206Y
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- roller
- driving shaft
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Abstract
The utility model provides a high-precision dividing device, which belongs to the technical field of machinery, and solves the technical problems of the prior high-precision dividing device that the gear clearance is large, the working noise is high, the precision is low and the service life is short. The high-precision dividing device comprises a box body, an output shaft, a dividing plate and a driving shaft, wherein the output shaft is rotationally connected with the dividing plate, the driving shaft is rotationally connected with the box body, a transmission mechanism is arranged between the output shaft and the driving shaft, a driving disk is arranged at one end of the driving shaft, an input shaft is arranged on one side of the driving disk, a cam is fixed on the input shaft, a roller group which corresponds to the cam and can drive the driving disk to rotate the set angle under the pushing effect of the cam when the cam rotates a circle is arranged on the driving disk, and the roller group comprises a plurality of rollers circumferentially distributed on the periphery of the driving shaft. The high-precision dividing devices has the advantages of simple structure, small gear clearance, low noise, high precision, long service life and high stability.
Description
Technical field
The utility model belongs to field of mechanical technique, especially relates to a kind of high-precision dividing apparatus.
Background technology
Workpiece whenever processes after the surface in clamping, turns over certain angle together with workpiece or moves a certain distance by moving part on the anchor clamps, to change the position of finished surface, realizes that the device of above-mentioned calibration requirement is called indexing means.Certainly, indexing means also is widely used in other occasions.
In order to improve the service behaviour of indexing means, people have carried out long-term exploration, have proposed various solutions.For example, Chinese patent literature discloses a kind of indexing mechanism [application number: 96113347.3; Publication number: CN1157201A], comprising: a matrix; Be supported on this matrix as a dividing spindle that rotates; A ratchet, its circumference are provided with a plurality of calibration teeth of arranging by angle intervals, and are fixedly mounted on this dividing spindle with coaxial manner; With a gear drive that is connected on this dividing spindle; It is characterized by: a grips is bearing on the matrix, in order to move between the clear position that leaves from ratchet calibration tooth at grips top and the contacted operating position of ratchet calibration tooth and its top; With gear drive; A bilateral servo motor that connects is to rotate this dividing spindle and ratchet; With a controller, in order to control this this dividing spindle of bilateral servo motor forward rotation, cause a corresponding calibration tooth of this ratchet to be turned over the desired indexing position that described tooth is meshed with the top of grips, this dividing spindle of backward rotation then makes this calibration tooth be meshed with top in order to the grips of calibration.
Such scheme has improved service behaviour to a certain extent, but the scheme that generally adopts in this device and the prior art is the same all is to adopt gear to carry out transmission and driving, the defective of this mode is: have the gap between gear, can produce bigger noise during work, precision is lower, also can cause service life shorter simultaneously.
Summary of the invention
The purpose of this utility model is at the problems referred to above, provides that a kind of operating noise is little, precision is high, the high-precision dividing apparatus of long service life.
For achieving the above object, the utility model has adopted following technical proposal: this high-precision dividing apparatus, comprise casing, output shaft, index dial and driving shaft, described output shaft and casing are rotationally connected and are fixed with index dial on output shafts, described driving shaft and casing are rotationally connected, it is characterized in that, be provided with transmission mechanism between described output shaft and the driving shaft, end at driving shaft is provided with driving-disc, side at driving-disc is provided with the power shaft that links with actuating unit, on power shaft, be fixed with cam, described driving-disc is provided with the corresponding setting of described cam and when cam rotates a circle can lean the set of rollers that drives driving-disc rotation set angle under the effect at cam, and above-mentioned set of rollers is made up of the some rollers that circumferentially are distributed in the driving shaft periphery.
In above-mentioned high-precision dividing apparatus, described cam comprises the transition portion of the rise part and the circular arc of outside protrusion, and when cam rotates its rise partly and transition portion all can contact with roller.
When cam rotated, cam rise part can contact with the roller in the set of rollers, and cam promotion this moment roller moves, thereby makes driving-disc rotate set angle.When the rise of cam partly turned over, because cam rise part no longer contacts with roller, this moment, driving-disc stopped operating.Because cam is in rotary state all the time, when the rise part of cam contacted with roller once more, driving-disc turned an angle once more.So repeatedly, rotate the intermittence that can realize driving-disc.Driving-disc can drive drive shaft turns, and driving shaft drives the output shaft rotation by transmission mechanism, thereby rotates the intermittence of realizing index dial.Owing to when cam contacts with roller, do not have the gap between the two substantially, thereby effectively reduce operating noise, improved operating accuracy, increase the service life.
In above-mentioned high-precision dividing apparatus, described transmission mechanism comprises and being arranged on the driving shaft and along the axially extended globoid cam of driving shaft be fixed on output panel on the output shaft, the outer rim edge of described output panel circumferentially is evenly distributed with some rollers, and above-mentioned roller can be embedded between the screw thread of globoid cam successively when drive shaft turns.
Circumferentially rotate because globoid cam is an axial location, when globoid cam rotated, the roller that is embedded between the globoid cam screw thread can move along screw thread, thereby output panel is rotated.When being embedded in roller between the globoid cam screw thread when shifting out screw thread, roller other on the output panel can enter between screw thread again.This structure has simple in structure, is easy to carry out Installation and Debugging, advantages such as stable work in work.
In above-mentioned high-precision dividing apparatus, be fixed with several cams on the described power shaft along power shaft axially-aligned and circumferential misalignment setting, be fixed with one or several driving-discs on the described driving shaft along the driving shaft axially-aligned, at least one side of driving-disc is provided with one group of set of rollers, cam and the corresponding one by one setting of set of rollers, and the roller circumferential misalignment of each set of rollers is provided with.
Cam here and set of rollers quantity can design as required, but power shaft is when rotating a circle, have at least all cam rise part of a period of time all the discord set of rollers corresponding with it contact.So just can realize the intermittence rotation of driving-disc.
In above-mentioned high-precision dividing apparatus, described cam be conjugate cam and have two or more, the corresponding one group of set of rollers that is arranged on the driving-disc of each cam, above-mentioned two groups or above set of rollers are arranged on the both sides of a driving-disc.
In above-mentioned high-precision dividing apparatus, described each roller circumferentially is evenly distributed on the periphery of driving shaft, and roller and driving-disc are rotationally connected.
Because roller and driving-disc are rotationally connected, and can effectively improve job stability, reduce friction, and increase the service life.
In above-mentioned high-precision dividing apparatus, described roller is fixed on the outer rim of output panel by roller shaft.When damaging appears in the part roller, also can change easily.
In above-mentioned high-precision dividing apparatus, described actuating unit is the motor that is fixed on the casing sidepiece, and described power shaft is tubular and is fixed on the motor shaft of motor, and described power shaft and casing are rotationally connected.
In above-mentioned high-precision dividing apparatus, be provided with bearing between the two ends of described driving shaft and the casing, described globoid cam and driving shaft are connected as a single entity.
Compared with prior art, the advantage of this high-precision dividing apparatus is: 1, owing to adopt conjugate cam and the structure that roller promotes mutually, can effectively reduce the gap between the part, effectively reduce operating noise, improve operating accuracy, increase the service life.2, because the mode that adopts globoid cam promotion roller to move realizes that the output panel that links with roller rotates, effectively improved job stability, overall structure is simple, is easy to carry out Installation and Debugging.3, roller and driving-disc are rotationally connected, and can effectively reduce friction.
Description of drawings
Fig. 1 is the perspective view that the utility model provides.
Fig. 2 is the sectional structure schematic diagram that the utility model provides.
Fig. 3 is the part-structure schematic diagram that the utility model provides.
Among the figure, casing 1, output shaft 2, index dial 3, driving shaft 4, driving-disc 5, power shaft 6, cam 7, set of rollers 8, roller 81, globoid cam 9, output panel 10, roller 11, roller rod 12, motor 13, motor shaft 131.
The specific embodiment
Embodiment 1:
Shown in Fig. 1～3, this high-precision dividing apparatus comprises parts such as casing 1, output shaft 2, index dial 3, driving shaft 4, cam 7, driving-disc 5, set of rollers 8, transmission mechanism, actuating unit.
As depicted in figs. 1 and 2, output shaft 2 is rotationally connected with casing 1 and is fixed with index dial 3 on output shaft 2.Driving shaft 4 is rotationally connected with casing 1, and output shaft 2 and driving shaft 4 mutual vertical settings.Be provided with transmission mechanism between output shaft 2 and driving shaft 4, this transmission mechanism comprises and being arranged on the driving shaft 4 and along driving shaft 4 axially extended globoid cams 9 be fixed on output panel 10 on the output shaft 2.Be provided with bearing between the two ends of driving shaft 4 and the casing 1, and globoid cam 9 is connected as a single entity with driving shaft 4.The outer rim edge of output panel 10 circumferentially is evenly distributed with some rollers 11, and above-mentioned roller 11 can be embedded between the screw thread of globoid cam 9 successively when driving shaft 4 rotates.In the present embodiment, roller 11 is fixed on the outer rim of output panel 10 by roller rod 12, when damaging appears in part roller 11, also can change easily simultaneously.
As shown in Figures 2 and 3, be provided with driving-disc 5, be provided with the power shaft 6 that links with actuating unit in a side of driving-disc 5 at an end of driving shaft 4.In the present embodiment, actuating unit is the motor 13 that is fixed on casing 1 sidepiece.Power shaft 6 is tubular and is fixed on the motor shaft 131 of motor, and power shaft 6 is rotationally connected with casing 1.On power shaft 6, be fixed with cam 7, be provided with on the driving-disc 5 with cam 7 corresponding settings and when cam 7 rotates a circle and can leaning the set of rollers 8 that drives driving-disc 5 rotation set angles under the effect at cam 7.Wherein, set of rollers 8 is made up of the some rollers 81 that circumferentially are distributed in driving shaft 4 peripheries.
In the present embodiment, cam 7 is for conjugate cam and have two, and cam 7 comprises the rise part of outside protrusion and the transition portion of circular arc, and when cam 7 rotations its rise partly and transition portion all can contact with roller 81.。Each cam 7 corresponding one group of set of rollers 8 that are arranged on the driving-disc 5, two groups of above-mentioned set of rollers 8 are arranged on the both sides of a driving-disc 5.Each roller 81 circumferentially is evenly distributed on the periphery of driving shaft 4, and roller 81 is rotationally connected with driving-disc 5.Roller 81 is rotationally connected with driving-disc 5, can effectively reduce friction.
During work, the motor shaft 131 of motor 13 drives power shaft 6 and rotates, thereby cam 7 is rotated.When cam 7 rotated, the rise part of cam 7 can contact with the roller 81 in the set of rollers 8, and this moment, cam 7 promotion rollers 81 moved, thereby driving-disc 5 is turned an angle.When the projection of cam 7 turned over, because cam 7 rises partly no longer contact with roller 81, this moment, driving-disc 5 stopped operating.When the rise part of cam 7 contacted with roller 81 once more, driving-disc 5 turned an angle once more.Promptly realize the intermittence rotation of driving-disc 5.Driving-disc 5 can drive driving shaft 4 and rotate, and makes that globoid cam 9 circumferentially rotates on the driving shaft 4.When globoid cam 9 rotated, the roller 11 that is embedded between globoid cam 9 screw threads can move along screw thread, thereby output panel 10 is rotated; When be embedded in roller 11 between globoid cam 9 screw threads when shifting out globoid cam 9 output panel 10 stop operating.When globoid cam 9 turned over once more, roller 11 other on the output panel 10 can enter between screw thread again.Because the rotation of output panel 10 can drive output shaft 2 and rotate, thereby the intermittence of the index dial 3 that realization and output shaft 2 are connected is rotated.
Embodiment 2:
In the present embodiment, be fixed with three cams 7 on the power shaft 6 along power shaft 6 axially-aligned and circumferential misalignment setting, be fixed with three driving-discs 5 on the driving shaft 4 along driving shaft 4 axially-aligned, be provided with one group of set of rollers 8 at driving-disc 5 sidepieces, cam 7 and the corresponding one by one setting of set of rollers 8, and the roller 81 circumferential misalignment settings of each set of rollers 8.When power shaft 6 rotates a circle, have at least all cam 7 rises part of a period of time all the discord set of rollers 8 corresponding with it contact.So just can realize the intermittence rotation of driving-disc 5.All the other are all identical with embodiment 1, and this paper does not do and gives unnecessary details.
Embodiment 3:
In the present embodiment, be fixed with a cam 7 on the power shaft 6, be fixed with a driving-disc 5 on the driving shaft 4, be provided with one group of set of rollers 8, cam 7 and set of rollers 8 corresponding settings at driving-disc 5 sidepieces.All the other are all identical with embodiment 1 or 2, and this paper does not do and gives unnecessary details.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as casing 1, output shaft 2, index dial 3, driving shaft 4, driving-disc 5, power shaft 6, cam 7, set of rollers 8, roller 81, globoid cam 9, output panel 10, roller 11, roller rod 12, motor 13, motor shaft 131 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (9)
1. high-precision dividing apparatus, comprise casing (1), output shaft (2), index dial (3) and driving shaft (4), described output shaft (2) is rotationally connected with casing (1) and is fixed with index dial (3) on output shaft (2), described driving shaft (4) is rotationally connected with casing (1), it is characterized in that, be provided with transmission mechanism between described output shaft (2) and the driving shaft (4), end at driving shaft (4) is provided with driving-disc (5), side at driving-disc (5) is provided with the power shaft (6) that links with actuating unit, on power shaft (6), be fixed with cam (7), described driving-disc (5) is provided with the corresponding setting of described cam (7) and when cam (7) rotates a circle can drive the set of rollers (8) that driving-disc (5) rotates set angle under cam (7) effect of leaning, above-mentioned set of rollers (8) circumferentially is distributed in the peripheral roller (81) of driving shaft (4) by some and forms.
2. high-precision dividing apparatus according to claim 1, it is characterized in that, described cam (7) comprises the transition portion of the rise part and the circular arc of outside protrusion, and when cam (7) rotates its rise partly and transition portion all can contact with roller (81).
3. high-precision dividing apparatus according to claim 1, it is characterized in that, described transmission mechanism comprises and is arranged on that driving shaft (4) is gone up and along the axially extended globoid cam of driving shaft (4) (9) be fixed on output panel (10) on the output shaft (2), the outer rim edge of described output panel (10) circumferentially is evenly distributed with some rollers (11), and above-mentioned roller (11) can be embedded between the screw thread of globoid cam (9) successively when driving shaft (4) rotates.
4. high-precision dividing apparatus according to claim 3, it is characterized in that, be fixed with several cams (7) on the described power shaft (6) along power shaft (6) axially-aligned and circumferential misalignment setting, be fixed with one or several driving-discs (5) on the described driving shaft (4) along driving shaft (4) axially-aligned, at least one side at driving-disc (5) is provided with one group of set of rollers (8), cam (7) and the corresponding one by one setting of set of rollers (8), and roller (81) the circumferential misalignment setting of each set of rollers (8).
5. high-precision dividing apparatus according to claim 4, it is characterized in that, described cam (7) is for conjugate cam and have two, the corresponding one group of set of rollers (8) that is arranged on the driving-disc (5) of each cam (7), and above-mentioned two groups of set of rollers (8) are arranged on the both sides of a driving-disc (5).
6. according to claim 1 or 2 or 3 or 4 or 5 described high-precision dividing apparatus, it is characterized in that described each roller (81) circumferentially is evenly distributed on the periphery of driving shaft (4), and roller (81) is rotationally connected with driving-disc (5).
7. high-precision dividing apparatus according to claim 6 is characterized in that, described roller (11) is fixed on the outer rim of output panel (10) by roller rod (12).
8. high-precision dividing apparatus according to claim 6, it is characterized in that, described actuating unit is for being fixed on the motor (13) of casing (1) sidepiece, described power shaft (6) is tubular and is fixed on the motor shaft (131) of motor, and described power shaft (6) is rotationally connected with casing (1).
9. high-precision dividing apparatus according to claim 6 is characterized in that, is provided with bearing between the two ends of described driving shaft (4) and the casing (1), and described globoid cam (9) is connected as a single entity with driving shaft (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920113125U CN201376206Y (en) | 2009-01-19 | 2009-01-19 | High-precision dividing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920113125U CN201376206Y (en) | 2009-01-19 | 2009-01-19 | High-precision dividing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201376206Y true CN201376206Y (en) | 2010-01-06 |
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ID=41516303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920113125U Expired - Fee Related CN201376206Y (en) | 2009-01-19 | 2009-01-19 | High-precision dividing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201376206Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890657A (en) * | 2010-06-18 | 2010-11-24 | 南京工程学院 | Dividing mechanism of mechanical drive |
| CN104493638A (en) * | 2014-12-30 | 2015-04-08 | 深圳市创世纪机械有限公司 | 360-degree dividing device for clamp-arm type tool changer |
| CN105033754A (en) * | 2015-08-21 | 2015-11-11 | 台州市凹凸传动部件有限公司 | Cam roller type numerical control indexing head |
| TWI568958B (en) * | 2014-09-24 | 2017-02-01 | Cam type double rotary shaft structure |
-
2009
- 2009-01-19 CN CN200920113125U patent/CN201376206Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890657A (en) * | 2010-06-18 | 2010-11-24 | 南京工程学院 | Dividing mechanism of mechanical drive |
| TWI568958B (en) * | 2014-09-24 | 2017-02-01 | Cam type double rotary shaft structure | |
| CN104493638A (en) * | 2014-12-30 | 2015-04-08 | 深圳市创世纪机械有限公司 | 360-degree dividing device for clamp-arm type tool changer |
| CN105033754A (en) * | 2015-08-21 | 2015-11-11 | 台州市凹凸传动部件有限公司 | Cam roller type numerical control indexing head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100106 Termination date: 20140119 |