CN203297522U - Worm wheel and worm mechanism adopting double-enveloping worm - Google Patents
Worm wheel and worm mechanism adopting double-enveloping worm Download PDFInfo
- Publication number
- CN203297522U CN203297522U CN2013203108593U CN201320310859U CN203297522U CN 203297522 U CN203297522 U CN 203297522U CN 2013203108593 U CN2013203108593 U CN 2013203108593U CN 201320310859 U CN201320310859 U CN 201320310859U CN 203297522 U CN203297522 U CN 203297522U
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- worm
- enveloping
- wheel
- double
- worm screw
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Abstract
The utility model discloses a worm wheel and worm mechanism adopting a double-enveloping worm, and belongs to the technical field of reduction gears. The worm wheel and worm mechanism solves the problems that an existing reduction gear on the market is poor in bearing capacity, complex in structure and large in occupied area due to the adoption of a cylindrical worm transmission mode. The worm wheel and worm mechanism comprises a worm wheel arranged on a spindle of the reduction gear and the double-enveloping worm, the double-enveloping worm comprises a worm shaft and a worm arranged in the middle of the worm shaft, the axial tooth outline of the worm is in the shape of an arc concaved inwards, and the tooth surface of a worm wheel is meshed with the tooth surface of the double-enveloping worm. Due to the adoption of the double-enveloping worm, the number of teeth through which the worm is meshed with the worm wheel is increased, and the contact surface of the tooth surfaces is increased (by more than 70%); in the working process, the total instant-contact length of the worm and the worm wheel is increased, the bearing capacity is 1.2-1.5 times that of a cylindrical worm, and the structure is compact and reasonable; the tooth surface lubrication angle is large, and a dynamic-pressure oil film is good in forming and retainability performance.
Description
Technical field
The utility model belongs to the speed reducer technical field, refers in particular to a kind of worm-and-wheel gear that adopts the twice-enveloping worm screw.
Background technique
As everyone knows, mostly adopt the cylindrical worm gearing transmission form on existing market in mechanically operated speed reducer, when the large power of needs transmission, need to increase the diameter of cylindrical worm, modulus is larger, and processing is just more difficult; Or when adopting other reducing gear, complex structure, take up room large.
Summary of the invention
For the deficiency that exists in background technique, the purpose of this utility model is to provide a kind of tongs line mechanism of multiplied yarn automatic coil winding machine.
For achieving the above object, the utility model provides following technological scheme: a kind of worm-and-wheel gear that adopts the twice-enveloping worm screw, comprise the worm gear and the twice-enveloping worm screw that are arranged on the speed reducer main shaft, the twice-enveloping worm screw comprises worm shaft and worm screw, worm screw is arranged on the middle part of worm shaft, the axial tooth profile of worm screw is shaped as the arc of indent, and the flank of tooth of the flank of tooth of described worm gear and twice-enveloping worm screw is meshed.
Above-mentioned worm shaft and main shaft are set to 90 degrees.
Be provided with 3-7 tooth on above-mentioned worm screw.
Above-mentioned worm gear mainly comprises worm gear outer ring and land, and the worm gear outer ring is threaded connection on land.
Above-mentioned land is arranged on main shaft by key.
The utility model beneficial effect compared to existing technology:
1, the utility model adopts the twice-enveloping worm screw, and the number of teeth of worm and wheel engagement increases, and flank of tooth area of contact increases (greater than 70%), when work, the total line length of the instantaneous contact of worm and wheel increases, and bearing capacity is cylindrical worm 1.2-1.5 times, and close structure is reasonable;
2, the lubricated angle of the utility model flank of tooth is large, and the formation of dynamic pressure oil film and retentivity are good.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The implication of number in the figure: 1-worm gear outer ring; The 2-key; The 3-main shaft; The 4-screw; The 5-land; The 6-worm shaft; The 7-worm screw.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in detail as preferred.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.
As shown in Figure 1, a kind of worm-and-wheel gear that adopts the twice-enveloping worm screw, comprise the worm gear and the twice-enveloping worm screw that are arranged on speed reducer main shaft 3, the twice-enveloping worm screw comprises worm shaft 6 and worm screw 7, worm screw 7 is arranged on the middle part of worm shaft 6, the axial tooth profile of worm screw 7 is shaped as the arc of indent, and the flank of tooth of the flank of tooth of described worm gear and twice-enveloping worm screw is meshed.
As preferably, above-mentioned worm shaft 6 is set to 90 degrees with main shaft 3.
, as preferably, be provided with 3-7 tooth on above-mentioned worm screw 7.
As preferably, above-mentioned worm gear mainly comprises worm gear outer ring 1 and land 5, and worm gear outer ring 1 is threaded connection on land 5.
As preferably, above-mentioned worm gear outer ring 1 is connected with land 5 by screw 4.
As preferably, above-mentioned land 5 is arranged on main shaft 3 by key 2.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art, under the prerequisite that does not break away from the utility model know-why, make some improvement and modification and also should be considered as protection domain of the present utility model.
Claims (5)
1. worm-and-wheel gear that adopts the twice-enveloping worm screw, it is characterized in that: comprise the worm gear and the twice-enveloping worm screw that are arranged on the speed reducer main shaft, the twice-enveloping worm screw comprises worm shaft and worm screw, worm screw is arranged on the middle part of worm shaft, the axial tooth profile of worm screw is shaped as the arc of indent, and the flank of tooth of the flank of tooth of described worm gear and twice-enveloping worm screw is meshed.
2. the worm-and-wheel gear of employing twice-enveloping worm screw according to claim 1, it is characterized in that: described worm shaft and main shaft are set to 90 degrees.
3. the worm-and-wheel gear of employing twice-enveloping worm screw according to claim 1, is characterized in that: be provided with 3-7 tooth on described worm screw.
4. the worm-and-wheel gear of employing twice-enveloping worm screw according to claim 1, it is characterized in that: described worm gear mainly comprises worm gear outer ring and land, the worm gear outer ring is threaded connection on land.
5. the worm-and-wheel gear of employing twice-enveloping worm screw according to claim 4, it is characterized in that: described land is arranged on main shaft by key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203108593U CN203297522U (en) | 2013-05-31 | 2013-05-31 | Worm wheel and worm mechanism adopting double-enveloping worm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203108593U CN203297522U (en) | 2013-05-31 | 2013-05-31 | Worm wheel and worm mechanism adopting double-enveloping worm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203297522U true CN203297522U (en) | 2013-11-20 |
Family
ID=49573530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203108593U Expired - Fee Related CN203297522U (en) | 2013-05-31 | 2013-05-31 | Worm wheel and worm mechanism adopting double-enveloping worm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203297522U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546044A (en) * | 2016-01-30 | 2016-05-04 | 李瑞刚 | Arc surface spiral roller multi-tooth screw transmission device |
| CN108204441A (en) * | 2018-01-08 | 2018-06-26 | 海安县申菱电器制造有限公司 | A kind of controllable repairing type method of the arc-shaped gear cylindrical worm flank of tooth |
-
2013
- 2013-05-31 CN CN2013203108593U patent/CN203297522U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546044A (en) * | 2016-01-30 | 2016-05-04 | 李瑞刚 | Arc surface spiral roller multi-tooth screw transmission device |
| CN108204441A (en) * | 2018-01-08 | 2018-06-26 | 海安县申菱电器制造有限公司 | A kind of controllable repairing type method of the arc-shaped gear cylindrical worm flank of tooth |
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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: 20131120 Termination date: 20140531 |