CN204553697U - Highi degree of accuracy releasable Worm and worm-wheel gearing - Google Patents
Highi degree of accuracy releasable Worm and worm-wheel gearing Download PDFInfo
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- CN204553697U CN204553697U CN201520060104.1U CN201520060104U CN204553697U CN 204553697 U CN204553697 U CN 204553697U CN 201520060104 U CN201520060104 U CN 201520060104U CN 204553697 U CN204553697 U CN 204553697U
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- worm
- ring
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- worm screw
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Abstract
A kind of highi degree of accuracy releasable Worm and worm-wheel gearing, it is characterized in that fixing assembling elastic axis bearing on housing, elastic axis bearing connects resilient bearing by spring, and worm screw is through the axis hole of resilient bearing; The directed seat of fixing assembling on housing, the work outer surface of directed seat is outer arcuate face, and directed seat is provided with elongated hole; Worm screw right-hand member installs successively frees seat, stage clip, graduation positioning ring, azimuth mechanism ring and transmission ring; Freeing the seat work outer surface corresponding with directed seat is concave profile; Graduation positioning ring is provided with male cone (strobilus masculinus), and azimuth mechanism is equipped with the inner conical surface coordinated with it; Transmission ring pin is fixed on worm screw, the disk body of transmission ring is arranged two perforation, and free button in the suit graduation of the outside of transmission ring, the inner that button is freed in graduation arranges two contacts, and two contacts are bored a hole and contact graduation positioning ring.The utility model transmission accuracy is high, the absolute value that can simultaneously take measurement of an angle and relative value, and free flexibly, structure is simple, easy to operate.
Description
Technical field
The utility model relates to a kind of mechanical device, particularly a kind of highi degree of accuracy releasable Worm and worm-wheel gearing, and this mechanism can carry out precision drive and angle measurement, can fast rotational location after freeing.
Background technique
In mechanical transmission, gear transmission is a kind of typical driving mechanism, and wherein Worm and worm-wheel gearing has the features such as velocity ratio is large, self-locking, measures industry Application comparison extensive in precision drive.Precision measuremnt requires that transmission accuracy is high, need positive and negative Double-directional rotary simultaneously, therefore centre distance, wheel running clearance etc. are larger on hysterisis error impact, greatly can reduce the transmission accuracy of worm and gear, thus the measuring accuracy of lowering apparatus, so higher to part machinery processing request, general process equipment is difficult to the requirement ensureing precision drive, precision machined processing cost is higher again, the cost of production of the product of raising, reduces the market competitiveness of enterprise.
Summary of the invention
The purpose of this utility model is to provide a kind of highi degree of accuracy releasable Worm and worm-wheel gearing, adopts resilient bearing arming mechanism, significantly reduces by the low impact on measurement result of machining accuracy, higher in identical level of processing condition underdrive precision.
The utility model solves the technological scheme that its technical problem adopts: comprise housing, worm gear, worm screw, handwheel, graduation ring, index, azimuth mechanism ring, traversing handwheel, it is characterized in that: worm gear is fixed on support, fixing assembling bearing support on housing, there is in the assembling of bearing support internal fixtion bearing one and the bearing two of interior spherical, the side design spherical part of worm screw, this spherical part coordinates with the interior spherical of bearing one, bearing two; Worm screw both sides can be rotated around the spherical part of worm screw; In bearing support, compress assembling spring strut by the externally threaded pressure ring of band, in pressure ring, assemble felt seal ring; On housing, fixing assembling elastic axis bearing, elastic axis bearing connects resilient bearing by spring, through the axis hole of resilient bearing on the right side of worm screw; The directed seat of fixing assembling on the right side of housing, the work outer surface of directed seat is outer arcuate face, and directed seat is provided with the elongated hole perpendicular to worm gear axial direction; Worm screw right-hand member installs successively frees seat, stage clip, graduation positioning ring, azimuth mechanism ring and transmission ring; Free seat corresponding with directed seat work outer surface be concave profile; Graduation positioning ring is provided with male cone (strobilus masculinus), and azimuth mechanism is equipped with the inner conical surface coordinated with it; Transmission ring pin is fixed on worm screw, the disk body of transmission ring is arranged two perforation, and free button in the suit graduation of the outside of transmission ring, the inner that button is freed in graduation arranges two contacts, and two contacts are bored a hole and contact graduation positioning ring.
The beneficial effects of the utility model: because worm screw one end adopts ball bearing to fix, the other end is can be freely movable perpendicular to worm gear axial direction, by resilient bearing, worm and gear is engaged automatically, eliminate by the impact of centre distance machining error on measuring accuracy, also eliminate worm and gear wheel running clearance to the impact of transmission hysterisis error simultaneously.Because one end adopts ball bearing, worm screw can rotate perpendicular to worm gear axial direction around ball bearing, realizes worm and gear and frees carry out fast rotational location completely.Transmission accuracy is high, can reach 1 mil, the absolute value that can simultaneously take measurement of an angle and relative value, and free flexibly, structure is simple, easy to operate.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is section of structure of the present utility model.
Fig. 2 is A-A sectional view of Fig. 1.
Fig. 3 is left end portion enlarged diagram in Fig. 1.
Fig. 4 is right end portion enlarged diagram in Fig. 1.
Fig. 5 is spring strut schematic diagram.
Fig. 6 is transmission circle schematic diagram.
Fig. 7 is the right elevation of Fig. 6.
Fig. 8 is that button schematic diagram is freed in graduation.
Fig. 9 is the left view of Fig. 8.
Figure 10 is that worm and wheel of the present utility model frees view.
Component serial number in figure: handwheel 1, bracket 2, graduation ring 3, pressure ring 4, seal ring 5, spring strut 6, index 7, bearing support 8, bearing 29, bearing 1, worm screw 11, directed seat 12, free seat 13, stage clip 14, graduation positioning ring 15, azimuth mechanism ring 16, transmission ring 17, pin 18, graduation free button 19, plug spiral shell 20, traversing handwheel 21, elastic axis bearing 22, spring 23, resilient bearing 24, worm gear 25, housing 26.
Embodiment
See Fig. 1-5, concrete structure is as follows: worm gear 25 is connected on support (known features, not shown), and the worm screw 11 in housing 26 engages with worm gear 25; At the fixing assembling bearing support 8 of housing 26, have bearing 1 and the bearing 29 of interior spherical in the assembling of bearing support 8 internal fixtion, the side design spherical part of worm screw 11, this spherical part coordinates with the interior spherical of bearing 1, bearing 29; Worm screw 11 can be rotated around the spherical part of worm screw 11.In bearing support 8, compress assembling spring strut 6 by the externally threaded pressure ring 4 of band, in pressure ring 4, assemble felt seal ring 5; See Fig. 5, spring strut 6 is on metal cylinder, have multiple tracks radial slot mouth 6-1, and adjacent notch 6-1 circumferential position 90o staggers, and makes it have certain axial elasticity.In the external stability assembling index 7 of bearing support 8; Be fixedly connected with bracket 2 at the left end of worm screw 11, bracket 2 is fixedly connected with handwheel 1, handwheel 1 is fixedly connected with graduation ring 3.On housing 26, fixing assembling elastic axis bearing 22, elastic axis bearing 22 connects resilient bearing 24 by spring 23, resilient bearing 24 has axis hole, through the axis hole of resilient bearing 24 on the right side of worm screw 11; The directed seat 12 of fixing assembling on the right side of housing, the work outer surface of directed seat 12 is outer arcuate face, and directed seat 12 is provided with the elongated hole perpendicular to worm gear axial direction, and the worm screw 11 through elongated hole can be made to free with worm gear 25 by freeing direction slip shown in Fig. 1.Worm screw 11 right-hand member installs successively frees seat 13, stage clip 14, graduation positioning ring 15, azimuth mechanism ring 16 and transmission ring 17; Freeing the seat 13 work outer surface corresponding with directed seat 12 is concave profile; Graduation positioning ring 15 is provided with male cone (strobilus masculinus), and azimuth mechanism ring 16 is provided with the inner conical surface coordinated with it; Transmission ring 17 pin 18 is fixed on worm screw 11, the disk body of transmission ring 17 is arranged two perforation 17-1(and see Fig. 6,7), free button 19 in the suit graduation of the outside of transmission ring 17, the inner that button 19 is freed in graduation arrange two through perforation 17-1 and the contact 19-1(contacting graduation positioning ring 15 is shown in Fig. 8,9); Traversing handwheel 21 is connected on transmission ring 17 by attachment screw; At traversing handwheel 21 internal thread connection plug spiral shell 20.
Working principle: graduation positioning ring 15 and azimuth mechanism ring 16 auto lock under the elastic force effect of stage clip 14; Press graduation to free button 19 and graduation positioning ring 15 and azimuth mechanism ring 16 are thrown off, adjustable azimuth mechanism ring 16 makes zero.Worm screw 11 to be compressed with worm gear 25 by spring 23 and engages by elastic axis bearing 22, rotates handwheel 1 or traversing handwheel 21 gets final product fine-adjustment rotary.Worm gear transmission ratio is 1:60, graduation is weekly 100 lattice, worm screw is rotated a lattice worm gear wheel 1/6000 and encloses, i.e. 1 mil, by the absolute value that the graduation ring of worm screw left end can take measurement of an angle, button is freed in the graduation of right-hand member, azimuth mechanism can be made zero at any time, be convenient for measuring the relative value of recording angular.
In Fig. 10, free completely by direction as shown pushing direction handwheel 21 worm and gear, realize fast rotational location.
Claims (2)
1. a highi degree of accuracy releasable Worm and worm-wheel gearing, comprise housing, worm gear, worm screw, handwheel, graduation ring, index, azimuth mechanism ring, traversing handwheel, it is characterized in that: fixing assembling bearing support on housing, there is in the assembling of bearing support internal fixtion bearing one and the bearing two of interior spherical, the side of worm screw arranges spherical part, and this spherical part coordinates with the interior spherical of bearing one, bearing two; Worm screw both sides can be rotated around the spherical part of worm screw; In bearing support, compress assembling spring strut by the externally threaded pressure ring of band, in pressure ring, assemble felt seal ring; On the upper shell of housing, fixing assembling elastic axis bearing, elastic axis bearing connects resilient bearing by spring, through the axis hole of resilient bearing on the right side of worm screw; The directed seat of fixing assembling on the right side of housing, the work outer surface of directed seat is outer arcuate face, and directed seat is provided with the elongated hole perpendicular to worm gear axial direction; Worm screw right-hand member installs successively frees seat, stage clip, graduation positioning ring, azimuth mechanism ring and transmission ring; Free seat corresponding with directed seat work outer surface be concave profile; Graduation positioning ring is provided with male cone (strobilus masculinus), and azimuth mechanism is equipped with the inner conical surface coordinated with it; Transmission ring pin is fixed on worm screw, the disk body of transmission ring is arranged two perforation, and free button in the suit graduation of the outside of transmission ring, the inner that button is freed in graduation arranges two contacts, and two contacts are bored a hole and contact graduation positioning ring.
2. highi degree of accuracy releasable Worm and worm-wheel gearing according to claim 1, is characterized in that: spring strut is on metal cylinder, have multiple tracks radial slot mouth, and adjacent notch circumferential position 90o staggers, and makes it have certain axial elasticity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520060104.1U CN204553697U (en) | 2015-01-29 | 2015-01-29 | Highi degree of accuracy releasable Worm and worm-wheel gearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520060104.1U CN204553697U (en) | 2015-01-29 | 2015-01-29 | Highi degree of accuracy releasable Worm and worm-wheel gearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204553697U true CN204553697U (en) | 2015-08-12 |
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ID=53828812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520060104.1U Withdrawn - After Issue CN204553697U (en) | 2015-01-29 | 2015-01-29 | Highi degree of accuracy releasable Worm and worm-wheel gearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204553697U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633008A (en) * | 2015-01-29 | 2015-05-20 | 中车集团沈阳汽车车桥制造有限公司 | High-accuracy detachable worm gear drive mechanism |
| CN108895120A (en) * | 2018-07-06 | 2018-11-27 | 甘肃省机械科学研究院有限责任公司 | Bevel Gear Transmission pair engages disengaging gear |
| CN111936758A (en) * | 2018-03-15 | 2020-11-13 | 蒂森克虏伯普利斯坦股份公司 | Helical gear drive for an electromechanical servo steering gear with asymmetrical pre-fastened fixed bearings |
-
2015
- 2015-01-29 CN CN201520060104.1U patent/CN204553697U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633008A (en) * | 2015-01-29 | 2015-05-20 | 中车集团沈阳汽车车桥制造有限公司 | High-accuracy detachable worm gear drive mechanism |
| CN111936758A (en) * | 2018-03-15 | 2020-11-13 | 蒂森克虏伯普利斯坦股份公司 | Helical gear drive for an electromechanical servo steering gear with asymmetrical pre-fastened fixed bearings |
| CN108895120A (en) * | 2018-07-06 | 2018-11-27 | 甘肃省机械科学研究院有限责任公司 | Bevel Gear Transmission pair engages disengaging gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150812 Effective date of abandoning: 20170517 |