CN200975436Y - Rolling gapless worm gear - Google Patents
Rolling gapless worm gear Download PDFInfo
- Publication number
- CN200975436Y CN200975436Y CN 200620158565 CN200620158565U CN200975436Y CN 200975436 Y CN200975436 Y CN 200975436Y CN 200620158565 CN200620158565 CN 200620158565 CN 200620158565 U CN200620158565 U CN 200620158565U CN 200975436 Y CN200975436 Y CN 200975436Y
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- CN
- China
- Prior art keywords
- wheel body
- roller
- circle
- threaded rod
- worm gear
- 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 tumbling type zero clearance worm wheel transmission devices, which comprises a round wheel body sleeved over the worm wheel shaft. A threaded rod is rotatablely arranged at one end of the circumference surface of the round wheel body. The utility model is characterized in that a plurality of rollers can be rotatablely arranged onto the circumference of the wheel body; the rollers are evenly laid out into a front circle and a back circle with a same center point. the angle Alpha formed by the axes of each roller in the front and the back circles with the radial direction of the wheel body is equal with each other; the angle Beta between the neighbor roller axes in the same circle is also equal with each other; the circumference surface of the front circle of the rollers is respectively in contact with the left working side surface of the threaded rod and the threads of the threaded rod; a clearance is respectively arranged between the circumference surface of the front circle of the rollers and the right working side surface of the threaded rod and the threads of the threaded rod; the circumference surface of the back circle of the rollers is respectively in contact with the right working side surface of the threaded rod and the threads of the threaded rod; a clearance is respectively arranged between the circumference surface of the back circle of the rollers and the left working side surface of the threaded rod and the threads of the threaded rod; in this way, the utility model provides a tumbling type zero clearance worm wheel transmission device with high accuracy of transmission, small friction, high efficiency of transmission and high transmission speed.
Description
Technical field
The utility model relates to a kind of rolling type zero lash worm gear driving device.
Background technique
The worm and gear transmission has advantages such as velocity ratio is big, compact structure, but because the gear motion of worm and gear transmission is to adopt sliding movement, cause the transmission efficiency of worm and gear transmission lower, energy loss is bigger, wearing and tearing to worm gear are also comparatively serious, cause the design speed of worm and gear transmission also lower thus.In addition, because the gear motion of worm and gear transmission exists the commutation gap, cause transmission accuracy lower.
The model utility content
The purpose of this utility model is to provide a kind of transmission accuracy height, and surface friction drag is little, transmission efficiency height, the rolling type zero lash worm gear driving device that transmission speed is big.
The utility model rolling type zero lash worm gear driving device, comprise the wheel body that is sleeved on the circle on the worm-wheel shaft, one end of wheel body circumferential surface can be provided with screw rod rotationally, it is characterized in that on the circumference of described wheel body, being provided with a plurality of rollers rotationally, before roller is, back two circle concentrics evenly distribute, before, the axis of each roller of back two circles and wheel body have an angle α between radially, angle α points to the outer end of the circumferential surface of wheel body, angle β between the adjacent rollers axis on the same circle is equal to each other, the circumferential surface of preceding circle roller pastes mutually with the work side, a left side of screw flight respectively, before the circumferential surface of circle roller have the gap with work side, the right side of screw flight respectively, the circumferential surface of back circle roller pastes mutually with the work side, the right side of screw flight respectively, and there is the gap in the circumferential surface of back circle roller with the work side, a left side of screw flight respectively.
Rolling type zero lash worm gear driving device of the present utility model, wherein said wheel body is made of forward and backward wheel body assembling, described roller adopts roller shaft to be installed on the forward and backward wheel body respectively, and the axis of each roller of forward and backward two circles and the wheel body angle α between radially is equal to each other.
Rolling type zero lash worm gear driving device of the present utility model, wherein said roller are cylindrical, and roller adopts Bearing Installation on described roller shaft, and the Normal section of screw flight groove is a rectangle.
Rolling type zero lash worm gear driving device of the present utility model adopts the annular boss location that mates with each other on the surface that wherein said forward and backward wheel body pastes mutually, forward and backward wheel body adopts a plurality of screw to link to each other.
Rolling type zero lash worm gear driving device of the present utility model, an end of wherein said screw rod links to each other with the output shaft of motor or directly links to each other with the output shaft of motor by the toothed belt transmission.
Rolling type zero lash worm gear driving device of the present utility model, wherein the bottom of each described roller shaft is adopted respectively and is threaded and axis hole cooperation location.
Rolling type zero lash worm gear driving device of the present utility model in use, when screw rod is made clockwise direction or is counterclockwise rotated, because the circumferential surface of preceding circle roller pastes mutually with the work side, a left side of screw flight respectively, before the circumferential surface of circle roller have the gap with work side, the right side of screw flight respectively, the circumferential surface of back circle roller pastes mutually with the work side, the right side of screw flight respectively, there is the gap in the circumferential surface of back circle roller with the work side, a left side of screw flight respectively, before so work side, the left side of screw flight and right work side can alternately promote when screw rod is made clockwise direction or counterclockwise rotated, the roller of back two circles, and the gap that when the commutation transmission, does not have gear motion, compare with existing worm and gear transmission, rolling type zero lash worm gear driving device of the present utility model has the transmission accuracy height, surface friction drag is little, the transmission efficiency height, the characteristics that transmission speed is big.So high precision turning round equipment such as the rotary table of the especially suitable high-precision machining center of those needs of rolling type zero lash worm gear driving device of the present utility model, numerical control rotating platform use.
Other details of rolling type zero lash worm gear driving device described in the utility model and characteristics can just can be cheer and bright by reading the embodiment hereinafter encyclopaedize in conjunction with the accompanying drawings.
Description of drawings
Fig. 1 is the plan view of structural representation of a kind of mode of execution of the utility model rolling type zero lash worm gear driving device;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the plan view of structural representation of the another kind of mode of execution of the utility model rolling type zero lash worm gear driving device;
Fig. 4 is the side view of Fig. 3.
Embodiment
As Fig. 1, Fig. 2 and Fig. 3, shown in Figure 4, the utility model rolling type zero lash worm gear driving device, comprise the wheel body 1 that is sleeved on the circle on the worm-wheel shaft 10, an end of wheel body 1 circumferential surface can be provided with screw rod 2 rotationally, and an end of screw rod 2 links to each other with motor by gear transmission or sprocket driving.On the circumference of wheel body 1, can be provided with a plurality of rollers 3 rotationally, before roller 3 is, back two circle concentrics evenly distribute, before, the axis of each roller 3 of back two circles and wheel body 1 have an angle α between radially, the axis of each roller 3 and wheel body 1 radially between angle α be equal to each other, angle α points to the outer end of the circumferential surface of wheel body 1, angle β between adjacent rollers 3 axis on the same circle is equal to each other, the circumferential surface of preceding circle roller 3 pastes mutually with the work side 5, a left side of screw rod 2 screw threads respectively, before the circumferential surface of circle roller 3 have the gap with work side 6, the right side of screw rod 2 screw threads respectively, the circumferential surface of back circle roller 3 pastes mutually with the work side 6, the right side of screw rod 2 screw threads respectively, and there is the gap in the circumferential surface of back circle roller 3 with the side 5 of working, the left side of screw rod 2 screw threads respectively.
The difference with Fig. 3, mode of execution shown in Figure 4 of Fig. 1, mode of execution shown in Figure 2 is that the structure of annular boss on the surface that forward and backward wheel body 7,8 pastes mutually is different, and the structure of other parts is basic identical.
The utility model rolling type zero lash worm gear driving device can link to each other an end of screw rod 2 or directly link to each other with the output shaft of motor by the toothed belt transmission in use with the output shaft of motor.When screw rod 2 is made clockwise direction or is counterclockwise rotated, because the circumferential surface of preceding circle roller 3 pastes mutually with the work side 5, a left side of screw rod 2 screw threads respectively, before the circumferential surface of circle roller 3 have the gap with work side 6, the right side of screw rod 2 screw threads respectively, the circumferential surface of back circle roller 3 pastes mutually with the work side 6, the right side of screw rod 2 screw threads respectively, there is the gap in the circumferential surface of back circle roller 3 with the work side 5, a left side of screw rod 2 screw threads respectively, before so work side, the left side of the screw thread of screw rod 25 and right work side 6 can alternately promote when screw rod 2 is made clockwise direction or counterclockwise rotated, the roller 3 of back two circles, and the gap that when the commutation transmission, does not have gear motion, thereby the feasible mechanical transmission precision of the machine tool of rolling type zero lash worm gear driving device of the present utility model of using greatly improves, and surface friction drag reduces.
Embodiment recited above is described preferred implementation of the present utility model; be not that design of the present utility model and scope are limited; do not breaking away under the utility model design concept prerequisite; common engineers and technicians make the technical solution of the utility model in related domain various modification and improvement; all should fall into protection domain of the present utility model; the technology contents that the utility model is asked for protection all is documented in claims.
Claims (6)
1. rolling type zero lash worm gear driving device, comprise the wheel body (1) that is sleeved on the circle on the worm-wheel shaft (10), one end of wheel body (1) circumferential surface can be provided with screw rod (2) rotationally, it is characterized in that on the circumference of described wheel body (1), being provided with a plurality of rollers (3) rotationally, before roller (3) is, back two circle concentrics evenly distribute, before, the axis of each roller (3) of back two circles and wheel body (1) have an angle α between radially, angle α points to the outer end of the circumferential surface of wheel body (1), angle β between adjacent rollers on the same circle (3) axis is equal to each other, the circumferential surface of preceding circle roller (3) pastes mutually with the work side, a left side (5) of screw rod (2) screw thread respectively, before the circumferential surface of circle roller (3) have the gap with work side, the right side of screw rod (2) screw thread (6) respectively, the circumferential surface of back circle roller (3) pastes mutually with the work side, the right side (6) of screw rod (2) screw thread respectively, and there is the gap in the circumferential surface of back circle roller (3) with the side (5) of working, the left side of screw rod (2) screw thread respectively.
2. rolling type zero lash worm gear driving device according to claim 1, it is characterized in that described wheel body (1) is made of forward and backward wheel body (7,8) assembling, described roller (3) adopts roller shaft (9) to be installed on the forward and backward wheel body (7,8) respectively, and the axis of each roller (3) of forward and backward two circles and wheel body (1) the angle α between radially is equal to each other.
3. rolling type zero lash worm gear driving device according to claim 1 and 2 is characterized in that described roller (3) for cylindrical, and roller (3) adopts Bearing Installation on described roller shaft (9), and the Normal section of the thread groove of screw rod (2) is a rectangle.
4. rolling type zero lash worm gear driving device according to claim 3 is characterized in that adopting the annular boss location that mates with each other on the surface that described forward and backward wheel body (7,8) pastes mutually, and forward and backward wheel body (7,8) adopts a plurality of screw to link to each other.
5. rolling type zero lash worm gear driving device according to claim 4 is characterized in that an end of described screw rod (2) links to each other with the output shaft of motor or directly links to each other with the output shaft of motor by the toothed belt transmission.
6. rolling type zero lash worm gear driving device according to claim 5, the bottom that it is characterized in that each described roller shaft (2) adopt respectively and are threaded and axis hole cooperates the location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620158565 CN200975436Y (en) | 2006-11-24 | 2006-11-24 | Rolling gapless worm gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620158565 CN200975436Y (en) | 2006-11-24 | 2006-11-24 | Rolling gapless worm gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200975436Y true CN200975436Y (en) | 2007-11-14 |
Family
ID=38901721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620158565 Expired - Fee Related CN200975436Y (en) | 2006-11-24 | 2006-11-24 | Rolling gapless worm gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200975436Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103358139A (en) * | 2012-04-09 | 2013-10-23 | 无锡天野数控装备有限公司 | Numerical control rotary table brake mechanism |
| CN108468777A (en) * | 2018-04-27 | 2018-08-31 | 邱垂财 | Roller cam mechanism |
-
2006
- 2006-11-24 CN CN 200620158565 patent/CN200975436Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103358139A (en) * | 2012-04-09 | 2013-10-23 | 无锡天野数控装备有限公司 | Numerical control rotary table brake mechanism |
| CN108468777A (en) * | 2018-04-27 | 2018-08-31 | 邱垂财 | Roller cam mechanism |
| CN108468777B (en) * | 2018-04-27 | 2022-01-14 | 邱垂财 | Roller cam mechanism |
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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: 20071114 Termination date: 20101124 |