CN201661651U - Shaft sleeve type non-backlash precision enveloping worm driver - Google Patents
Shaft sleeve type non-backlash precision enveloping worm driver Download PDFInfo
- Publication number
- CN201661651U CN201661651U CN2010201408072U CN201020140807U CN201661651U CN 201661651 U CN201661651 U CN 201661651U CN 2010201408072 U CN2010201408072 U CN 2010201408072U CN 201020140807 U CN201020140807 U CN 201020140807U CN 201661651 U CN201661651 U CN 201661651U
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- worm
- shaft
- right half
- sleeve
- sleeve type
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Abstract
The utility model relates to a shaft sleeve type non-backlash precision enveloping worm driver. The driver is characterized in that: the tooth profile of a worm is an enveloping worm, which comprises a left half worm sleeve and a right half worm shaft in centrosymmetry, and the left half worm sleeve and the right half worm shaft are connected by an expanded connecting expansion sleeve. The driver is mainly characterized in that the axis of the right half worm shaft is in the hole of the left half worm sleeve. The expanded connecting sleeve is an industrial standard part. The left and the right half worms can be relatively rotated to clamp worm gear teeth opposite to the worm, so that the backlash between the worm and the worm gear teeth is eliminated.
Description
Technical field
The utility model relates to a kind of toroid helicoids worm, and particularly a kind of axle sleeve type does not have the high-precision toroid helicoids worm of sideshake (sideshake is adjustable).
Background technique
The worm screw profile of toroid helicoids worm transmission is the annulus that turns round around worm axis with one section concave circular arc curve.Its flank of tooth is to be the track plane of bus with straight line or curve, or with plane or curved surface as the formed envelope surface of generatrix.By toroid helicoids worm and the worm gear engagement that matches, just constituted the toroid helicoids worm transmission.
It is many that toroid helicoids worm transmission at present has a total number of teeth in engagement, bearing capacity is big, the efficient height, advantages such as long service life, in mechanical transmission fields, be widely used, but because design, make, reasons such as installation, backlash is difficult to avoid, especially the drive gap after the wearing and tearing becomes big, can't adjust, therefore the toroid helicoids worm transmission device seldom is used on the very high mechanical device of precision rotating work positioning requirements, the toroid helicoids worm anti-backlash mechanism is very rare in practice, through looking into, before there had been Chinese patent 200820215247.5 to apply for a kind of novel ring surface enveloped non-clearance worm and gear speed-reduction apparatus, but it is to utilize spring to eliminate the side clearance, precision positioning to transmitting large torque can not meet the demands, therefore there is the narrow limitation on using, demands developing the high-precision toroid helicoids worm transmission device of the no sideshake that can satisfy transmitting large torque urgently, to solve the problem that exists at present.
Summary of the invention:
The purpose of this utility model is that there is side-play problem in toroid helicoids worm in the solution prior art, provides a kind of axle sleeve type not have the high-precision toroid helicoids worm transmission device of sideshake.The utility model design axle sleeve type does not have the accurate toroid helicoids worm transmission device of sideshake, it is characterized in that: the worm screw profile of tooth is a toroid helicoids worm, by a centrosymmetric left side half worm set and right half worm shaft) to form, left half worm set is linked to each other by the swelling of swelling connecting sleeve with right half worm shaft.Be primarily characterized in that: the axle core of right half worm shaft is in the hole of a left side half worm set.Described swelling connecting sleeve is the industry standard part.Characteristics of the present utility model are can be by relatively rotating left and right semi-scroll bar, and worm-gear tooth that will be relative with worm screw clamps, and eliminates the side clearance of worm and wheel between cog.
Description of drawings:
Fig. 1 is a structural representation of the present utility model,
Fig. 2,3 is a of Fig. 1 and the partial schematic diagram of b,
Worm gear 1, right half worm shaft 2-1, left half worm set 2-2, swelling connecting sleeve 3, pedestal 4.
Below in conjunction with accompanying drawing and construction embodiment the utility model is made detailed operation instruction.
Embodiment:
Comprise worm gear 1, right half worm shaft 2-1, left half worm set 2-2, swelling connecting sleeve 3, pedestal 4 among the figure, it is characterized in that: the worm screw profile of tooth is a toroid helicoids worm, be made up of a centrosymmetric left side half worm set 2-2 and right half worm shaft 2-1, left half worm set 2-2 is linked to each other by swelling connecting sleeve 3 connection sets with right half worm shaft 2-1.It is characterized in that: the axle core of right half worm shaft 2-2 is in the hole of a left side half worm set 2-1.
One side of right half worm shaft 2-1 is toroid helicoids worm, and another side is outer circular shaft.One side of a left side half worm set 2-2 is the cover of toroid helicoids worm band endoporus, can rotate on half worm shaft of the right side; Another side is the thin-walled cover, by locking internal withdraw type swelling cover 3 worm shaft and cover is fastened as one.
Concrete adjusting method:
Unclamp swelling earlier and overlap 3 connection sets, relatively rotate worm shaft and worm set, make the right flank of tooth of the worm tooth-surface contact worm gear 1 of right half worm shaft 2-1, simultaneously, the left flank of tooth of worm gear 1 also contacts with the worm tooth-surface of a left side half worm set 2-2, and the sideshake of eliminating between worm gear and worm tooth-surface is seen accompanying drawing 2,3.Internal withdraw type swelling cover locking is realized no sideshake or very little sideshake then, thereby reaches the purpose of precision drive.
The worm screw that the utility model adopts is a toroid helicoids worm, toroid helicoids worm and worm gear total number of teeth in engagement many (cylindrical worm and worm gear total number of teeth in engagement only have one or two tooth), and toroid helicoids worm, worm gear are more suitable for being used for accurate transmission mechanism through behind the roll flute.After long-term use, when wearing and tearing generation gap taking place, can eliminate sideshake again by above-mentioned concrete adjusting method as the flank of tooth, recover precision, realize precision drive once more.
Claims (2)
1. axle sleeve type does not have the accurate toroid helicoids worm transmission device of sideshake, comprise worm gear, right half worm shaft, left half worm set, swelling connecting sleeve, pedestal, it is characterized in that: the worm screw profile of tooth is a toroid helicoids worm, be made up of a centrosymmetric left side half worm set and right half worm shaft, left half worm set is linked to each other by swelling connecting sleeve connection set with right half worm shaft.
2. do not have the accurate toroid helicoids worm transmission device of sideshake by the described axle sleeve type of claim 1, it is characterized in that: the axle core of right half worm shaft is in the hole of a left side half worm set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201408072U CN201661651U (en) | 2010-03-25 | 2010-03-25 | Shaft sleeve type non-backlash precision enveloping worm driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201408072U CN201661651U (en) | 2010-03-25 | 2010-03-25 | Shaft sleeve type non-backlash precision enveloping worm driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201661651U true CN201661651U (en) | 2010-12-01 |
Family
ID=43232066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201408072U Expired - Lifetime CN201661651U (en) | 2010-03-25 | 2010-03-25 | Shaft sleeve type non-backlash precision enveloping worm driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201661651U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734389A (en) * | 2012-06-25 | 2012-10-17 | 西华大学 | Worm transmission device capable of eliminating gear backlash |
-
2010
- 2010-03-25 CN CN2010201408072U patent/CN201661651U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734389A (en) * | 2012-06-25 | 2012-10-17 | 西华大学 | Worm transmission device capable of eliminating gear backlash |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101201 |