CN103335064A - Automatic clearance-removing double-worm speed reducer - Google Patents
Automatic clearance-removing double-worm speed reducer Download PDFInfo
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- CN103335064A CN103335064A CN2013102780060A CN201310278006A CN103335064A CN 103335064 A CN103335064 A CN 103335064A CN 2013102780060 A CN2013102780060 A CN 2013102780060A CN 201310278006 A CN201310278006 A CN 201310278006A CN 103335064 A CN103335064 A CN 103335064A
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Abstract
The invention discloses an automatic clearance-removing double-worm speed reducer which comprises a shell body, an upper worm, a lower worm, worm boxes, a worm gear, a flanged shaft and a brake disc. The upper side and the lower side of the worm gear are provided with the upper worm and the lower worm respectively, wherein the upper worm is meshed with the upper side of the worm gear, and the lower worm is meshed with lower side of the worm gear. The upper side and the lower side of the worm gear are structurally symmetrical. The worms are installed on the worm boxes which can slide in the radial direction along the worm gear through two conical roller bearings, one end of the upper worm and one end of the lower worm penetrate out of the worm boxes and are connected with elastic couplings, the right end shaft head of the flanged shaft is directly installed in a worm hole and is compressed with a round nut through a tab washer, an oil seal is arranged between the flanged shaft and the shell body, the brake disc is installed on the right head shaft head of the flanged shaft, and an electromagnetic coil is fixed on the shell body. When the worm gear and the worms are designed and assembled, zero clearance in theory is ensured, the automatic clearance-removing double-worm speed reducer can automatically adjust and remove the clearance which exists when the speed reducer is used, the problems that machining precision of a spindle of a four-shaft or five-shaft semi-closed loop control system is not high and the rigidity of process systems of some machine tools is not enough due to backlash at the present stage can be solved, and the automatic clearance-removing double-worm speed reducer is higher in transmission accuracy due to the adoption of the double worms.
Description
Technical field
The present invention relates to a kind of twin worm speed reducer, especially relate to and a kind ofly can eliminate backlass automatically, and under a stable condition, can realize a kind of automatic anti-backlash twin worm speed reducer of self-locking.
Background technique
At present, the normal structure that adopts a worm screw and a worm gear of the worm and gear transmission speed reducer that known numerical control device adopts, the centre distance of its worm and worm wheel can not be adjusted.Owing to make and assembly error, generally can have bigger backlass, and present stage preferably the backlass angle of worm-gear speed reducer 1 ' to 6 ' between, this gap has tremendous influence to the machining accuracy of workpiece.If have 3 ' the gap, the output shaft of worm-gear speed reducer is as the B axle of lathe, make the main shaft of lathe obtain the motion of yaw, when the cutting edge roundness on the main shaft is 500mm to the distance at worm and gear output shaft center, the error that produces because of its backlass is π * 2*500*3/60/360 ≈ 0.436mm, so can reduce the machining accuracy of lathe greatly.Present stage, in a single day general worm-gear speed reducer assembles moulding centre distance and just can not adjust in the design production process, in use certainly lead to wearing and tearing through after the break-in, thereby produce backlass, and can't adjust.The backlass that exists in machine tooling like this can cause the rigidity deficiency of lathe, and then influences quality of processing and the precision of workpiece.Especially the yaw of four of present stages or five-axis machine tool or speed reducer complex structure that revolving table adopts, use, maintenance and processing cost costliness, manufacturing efficiency is low, thus present stage four, five degree of precision the machine cost height, price is expensive.
Summary of the invention
Produce the deficiency that backlass causes machine tooling quality and precision to reduce for overcoming can not adjusting because of centre distance of existing worm and gear transmission speed reducer existence, the invention provides a kind of automatic anti-backlash twin worm speed reducer, when assembling, make two worm screws press to turbine vertically, eliminate the gap, and the centre distance of worm and worm wheel can be adjusted automatically in this structure, design has electromagnetic brake in addition, speed reducer can be realized complete self-locking when not changeing in that worm screw is static, improve the process system rigidity in order to eliminate backlass, thereby improve lathe transmission accuracy and rigidity, especially under the half-closed loop control system, improve the counterrotating precision of running shaft.
The technical solution adopted for the present invention to solve the technical problems is: a kind of automatic anti-backlash twin worm speed reducer, comprise housing, last worm screw, following worm screw, the worm screw box, worm gear, flange shaft, brake disc, the both sides up and down of described worm gear are respectively equipped with the last worm screw with its engagement, following worm screw, describedly go up worm screw and be contained in the worm screw box that can radially slide along worm gear by two tapered roller bearings, a described end of going up worm screw passes the back from the worm screw box and is connected with elastic coupling flexible coupling, four springs are housed between described housing and the worm screw box, described worm screw box both sides are provided with a left side and adjust plate and the right plate of adjusting, the two ends of described worm screw box are respectively equipped with worm screw box left end cap and worm screw box right end cap, described worm screw box left end cap outside compresses left end cap by ball with the worm screw box and contacts, described worm screw box right end cap outside compresses right end cap by ball with the worm screw box and contacts, the worm screw box compresses left end cap and worm screw box and compresses right end cap and be fixed on the housing by screw, a deep groove ball bearing respectively is equipped with in two shaft head positions of described worm gear, flange shaft right-hand member spindle nose directly is contained in the worm wheel aperture, compress by floor clip and round nut, be provided with oil sealing between flange shaft and the housing, brake disc is contained on the right-hand member spindle nose of flange shaft, and electromagnetic coil is fixed on the housing.
Described worm gear downside is provided with down the worm screw assemblying body, and described worm gear is the symmetrical configuration of both sides up and down.
One end of described spring is fixed on the housing by spring seat, and described spring seat is provided with spring and transfers the power jackscrew.
Plate is adjusted on described worm screw box and a left side and right the adjustment between the plate is equipped with ball, and the adjustment jackscrew by housing plate is adjusted on a left side and the right plate of adjusting compresses.
Outer ring and the housing of a described deep groove ball bearing are combined together, and outer ring and the pressing plate of another deep groove ball bearing are combined together, and the inner ring of described deep groove ball bearing cooperates with the spindle nose of worm gear.
Last worm screw and following worm screw are all adopted right-hand design.
Described housing is provided with bonnet.
In size design and when assembling,, two worm screws are along axially pressing to worm gear simultaneously, make a side surface of the worm tooth worm-gear tooth surface of tightly fitting.When needs drove the worm gear rotation, one of them worm screw played a major role, and another helps out, when the worm gear sense of rotation changes, and two worm screw role exchanges.
The present invention has following beneficial effect: worm and gear guarantees zero clearance in theory in design and fit on, occur in the use adjusting elimination automatically behind the gap, can solve the problem of the process system rigidity deficiency that not high and some lathes of four of present stages or five half-closed loop control system rotating shaft machining accuracies cause because of backlass, adopt the twin worm transmission accuracy higher.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
Among the figure, 1, housing, 2, flange shaft, 3, brake disc, 4, electromagnetic coil, 5, plate is adjusted on a left side, 6, the worm screw box, 7, last worm screw, 8, deep groove ball bearing, 9, oil sealing, 10, worm gear, 11, following worm screw, 12, spring seat, 13, spring, 14, adjust jackscrew, 15, spring is transferred power jackscrew, 16, ball, 17, the right plate of adjusting, 18, pressing plate, 19, round nut, 20, floor clip, 21, following worm screw assemblying body, 22, bonnet, 23, the worm screw box compresses left end cap, 24, the worm screw box compresses right end cap, and 25, tapered roller bearing, 26, elastic coupling flexible coupling, 27, worm screw box left end cap, 28, worm screw box right end cap, 29, screw.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing
As shown in Figure 1, top last worm screw (7) is contained in the worm screw box (6) that can radially slide along worm gear (10), and the flexibility of slip guarantees by ball (16).Between housing (1) and worm screw box (6), four springs (13) are housed, worm screw box (6) is produced an elastic force of pushing worm gear (10) to, the time can realize automatic capturing in assembling, automatic capturing back is well adjusted the correctness of worm screw (7) engaging position in plate (5) and right adjustment jackscrew (14) assurance of adjusting outside the plate (17) with a left side.Spring is transferred power jackscrew (15) holddown spring seat (12) and spring (13) is carried out the strength adjustment, thereby regulates automatically along with worm gear (10) and last worm screw (7) are rotated the gap of wearing and tearing and producing.The sealing of housing (1) back guarantees by bonnet (22).A deep groove ball bearing (8) respectively is equipped with in two shaft head positions of worm gear (10), the outer ring of one of them bearing and housing (1) are combined together, the outer ring of another bearing and pressing plate (18) are combined together, bearing inner race cooperates with the spindle nose of worm gear (10), eliminates the axial movement space of worm gear (10) by clamping platen (18).Plate (5) is adjusted on worm screw box (6) and a left side and right the adjustment between the plate (17) is equipped with ball (16), makes the slip of worm screw box (6) more smooth and easy.Adjustment jackscrew (14) by housing (1) plate (5) is adjusted on a left side and the right plate (17) of adjusting compresses, and guarantees the position of worm screw box (6) left and right directions.Spring (13) and spring seat (12) are used for guaranteeing worm gear (10) and last worm screw (7) engagement tightly.Spring transfers power jackscrew (15) to be used for adjusting the impacting force of spring (13), guarantees worm gear (10) and last worm screw (7) engagement tightly.Elastic coupling flexible coupling (26) is used for being connected with the input power of outside, and can compensate offset less in the transmission process automatically.Power is by flange shaft (2) output, and flange shaft (2) right-hand member spindle nose directly is contained in worm gear (10) hole, compresses with floor clip (20) and round nut (19) to prevent from becoming flexible, and assurance flange shaft (2) does not axially have the play gap.Be provided with oil sealing (9) between flange shaft (2) and the housing (1), prevent that the lubricant oil in the housing (1) from leaking outside.Brake disc (3) is contained on the right-hand member spindle nose of flange shaft (2), electromagnetic coil (4) is fixed on the housing (1), electromagnetic coil (4) when energising, can produce high magnetic fields at the end face of electromagnetic coil (4), in order to adhesive brake disc (3), worm gear (10) is pinned can not be rotated.
As shown in Figure 2, last worm screw (7) is contained in the worm screw box (6) by two tapered roller bearings (25), and the worm screw box left end cap (27) by worm screw box (6) two ends and worm screw box right end cap (28) compress eliminates the axial movement space of going up worm screw (7).(7) one of last worm screws pass from worm screw box (6), and by elastic coupling flexible coupling (26) input power, elastic coupling flexible coupling (26) is in order to less offset in the automatic compensation transmission process.Worm screw box left end cap (27) and worm screw box right end cap (28) outside have ball (16) and worm screw box to compress left end cap (23) to compress right end cap (24) with the worm screw box and contact, and fixedly worm screw box (6) left and right directions is beneficial to the automatic adjustment in gap.The worm screw box compresses left end cap (23) and worm screw box and compresses right end cap (24) and be connected on the housing (1) by screw (29), can eliminate the axial float of worm screw box (6) after compressing.Spring (13) and spring seat (12) are used for guaranteeing worm gear (10) and last worm screw (7) engagement tightly, eliminate the gap in the transmission automatically, realize the automatic adjustment in gap.Following worm screw (11) and structure on every side thereof in the following following worm screw assemblying body (21) are identical with working principle with above-mentioned last worm screw (7) and structure on every side thereof with working principle, and the up-down structure symmetric arrangement no longer repeats to set forth here.When design size and assembling, last worm screw (7) and following worm screw (11) tightly fit the left flank of worm screw (7) and following worm screw (11) and the right flank of worm gear (10) along axially pressing to worm gear (10) simultaneously.Last worm screw (7) and following worm screw (11) are all adopted right-hand design, and when worm gear (10) when clockwise rotating, following worm screw (11) plays main driving effect, and when worm gear (10) when rotating counterclockwise, last worm screw (7) plays a major role.The rotating speed of two worm screws is identical during work, and direction is opposite.
The present invention is not limited to above-mentioned mode of execution, and anyone should learn the structural change of making under enlightenment of the present invention, and every have identical or close technological scheme with the present invention, all falls within protection scope of the present invention.
The technology that the present invention does not describe in detail, shape, structure partly are known technology.
Claims (7)
1. automatic anti-backlash twin worm speed reducer, comprise housing (1), last worm screw (7), following worm screw (11), worm screw box (6), worm gear (10), flange shaft (2), brake disc (3), it is characterized in that, the both sides up and down of described worm gear (10) are respectively equipped with the last worm screw (7) with its engagement, following worm screw (11), describedly go up worm screw (7) and be contained in the worm screw box (6) that can radially slide along worm gear (10) by two tapered roller bearings (25), a described end of going up worm screw (7) passes the back from worm screw box (6) and is connected with elastic coupling flexible coupling (26), between described housing (1) and the worm screw box (6) four springs (13) are housed, described worm screw box (6) both sides are provided with a left side and adjust plate (5) and the right plate (17) of adjusting, the two ends of described worm screw box (6) are respectively equipped with worm screw box left end cap (27) and worm screw box right end cap (28), described worm screw box left end cap (27) outside compresses left end cap (23) by ball (16) and worm screw box and contacts, described worm screw box right end cap (28) outside compresses right end cap (24) by ball (16) and worm screw box and contacts, the worm screw box compresses left end cap (23) and worm screw box and compresses right end cap (24) and be fixed on the housing (1) by screw (29), a deep groove ball bearing (8) respectively is equipped with in two shaft head positions of described worm gear (10), flange shaft (2) right-hand member spindle nose directly is contained in worm gear (10) hole, compress by floor clip (20) and round nut (19), be provided with oil sealing (9) between flange shaft (2) and the housing (1), brake disc (3) is contained on the right-hand member spindle nose of flange shaft (2), and electromagnetic coil (4) is fixed on the housing (1).
2. a kind of automatic anti-backlash twin worm speed reducer according to claim 1 is characterized in that, described worm gear (10) downside is provided with down worm screw assemblying body (21), and described worm gear (10) is the symmetrical configuration of both sides up and down.
3. a kind of automatic anti-backlash twin worm speed reducer according to claim 1 is characterized in that, an end of described spring (13) is fixed on the housing (1) by spring seat (12), and described spring seat (12) is provided with spring and transfers power jackscrew (15).
4. a kind of automatic anti-backlash twin worm speed reducer according to claim 1, it is characterized in that, plate (5) is adjusted on described worm screw box (6) and a left side and right the adjustment between the plate (17) is equipped with ball (16), and adjustment jackscrew (14) by housing (1) plate (5) is adjusted on a left side and the right plate (17) of adjusting compresses.
5. a kind of automatic anti-backlash twin worm speed reducer according to claim 1, it is characterized in that, the outer ring of a described deep groove ball bearing (8) and housing (1) are combined together, the outer ring of another deep groove ball bearing (8) and pressing plate (18) are combined together, and the inner ring of described deep groove ball bearing (8) cooperates with the spindle nose of worm gear (10).
6. a kind of automatic anti-backlash twin worm speed reducer according to claim 1 is characterized in that, last worm screw (7) and following worm screw (11) are all adopted right-hand design.
7. a kind of automatic anti-backlash twin worm speed reducer according to claim 1 is characterized in that described housing (1) is provided with bonnet (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310278006.0A CN103335064B (en) | 2013-07-04 | 2013-07-04 | A kind of automatic anti-backlash twin worm reductor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310278006.0A CN103335064B (en) | 2013-07-04 | 2013-07-04 | A kind of automatic anti-backlash twin worm reductor |
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| Publication Number | Publication Date |
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| CN103335064A true CN103335064A (en) | 2013-10-02 |
| CN103335064B CN103335064B (en) | 2017-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310278006.0A Expired - Fee Related CN103335064B (en) | 2013-07-04 | 2013-07-04 | A kind of automatic anti-backlash twin worm reductor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948672A (en) * | 2015-07-01 | 2015-09-30 | 王烽 | Gapless worm gear worm rod speed reducer |
| CN106763510A (en) * | 2016-12-28 | 2017-05-31 | 深圳安科高技术股份有限公司 | A kind of worm gearing |
| CN108953582A (en) * | 2018-06-21 | 2018-12-07 | 长春花明科技有限公司 | A kind of list worm gear twin worm deceleration device initialization gap removing method |
| CN109290396A (en) * | 2018-11-06 | 2019-02-01 | 广东双兴新材料集团有限公司 | A kind of perpendicular wheel seat of tuber forming |
| CN109630618A (en) * | 2019-01-17 | 2019-04-16 | 杭州星河传动机械研究院有限公司 | A kind of synchronous high-mechanic speed reducer |
| DE102017128182A1 (en) * | 2017-11-28 | 2019-05-29 | Moog Gmbh | screw drive |
| CN112696462A (en) * | 2020-12-23 | 2021-04-23 | 河南易沃克工业设备有限公司 | Gear transmission device for pipeline cutting equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH113791A (en) * | 1924-09-30 | 1926-02-16 | Jakob Niederhauser | Worm gear. |
| US2582690A (en) * | 1949-05-06 | 1952-01-15 | Western Electric Co | Backlash eliminating device |
| FR2311236A1 (en) * | 1975-05-15 | 1976-12-10 | Philips Nv | Worm gear transmission system |
| CN201363397Y (en) * | 2009-01-21 | 2009-12-16 | 郭学成 | Worm-and-wheel mechanism for zero-clearance transmission and location |
| CN102168748A (en) * | 2010-02-25 | 2011-08-31 | 毕和军 | Backlash-free worm and gear revolving speed reducing mechanism |
| CN202527804U (en) * | 2012-03-19 | 2012-11-14 | 浙江嘉力宝精机股份有限公司 | Twin-worm automatic anti-backlash driving indexing workbench of gear grinding machine |
| CN102996758A (en) * | 2011-09-16 | 2013-03-27 | 发得科技工业股份有限公司 | Back clearance eliminating device of transmission mechanism |
| CN203395105U (en) * | 2013-07-04 | 2014-01-15 | 济南若泰数控科技有限公司 | Double worm reducer capable of automatically eliminating clearance |
-
2013
- 2013-07-04 CN CN201310278006.0A patent/CN103335064B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH113791A (en) * | 1924-09-30 | 1926-02-16 | Jakob Niederhauser | Worm gear. |
| US2582690A (en) * | 1949-05-06 | 1952-01-15 | Western Electric Co | Backlash eliminating device |
| FR2311236A1 (en) * | 1975-05-15 | 1976-12-10 | Philips Nv | Worm gear transmission system |
| CN201363397Y (en) * | 2009-01-21 | 2009-12-16 | 郭学成 | Worm-and-wheel mechanism for zero-clearance transmission and location |
| CN102168748A (en) * | 2010-02-25 | 2011-08-31 | 毕和军 | Backlash-free worm and gear revolving speed reducing mechanism |
| CN102996758A (en) * | 2011-09-16 | 2013-03-27 | 发得科技工业股份有限公司 | Back clearance eliminating device of transmission mechanism |
| CN202527804U (en) * | 2012-03-19 | 2012-11-14 | 浙江嘉力宝精机股份有限公司 | Twin-worm automatic anti-backlash driving indexing workbench of gear grinding machine |
| CN203395105U (en) * | 2013-07-04 | 2014-01-15 | 济南若泰数控科技有限公司 | Double worm reducer capable of automatically eliminating clearance |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948672A (en) * | 2015-07-01 | 2015-09-30 | 王烽 | Gapless worm gear worm rod speed reducer |
| CN106763510A (en) * | 2016-12-28 | 2017-05-31 | 深圳安科高技术股份有限公司 | A kind of worm gearing |
| CN106763510B (en) * | 2016-12-28 | 2019-06-25 | 深圳安科高技术股份有限公司 | A kind of worm gearing |
| DE102017128182A1 (en) * | 2017-11-28 | 2019-05-29 | Moog Gmbh | screw drive |
| US11719323B2 (en) | 2017-11-28 | 2023-08-08 | Moog Gmbh | Worm drive |
| DE102017128182B4 (en) | 2017-11-28 | 2023-09-21 | Moog Gmbh | Worm drive |
| CN108953582A (en) * | 2018-06-21 | 2018-12-07 | 长春花明科技有限公司 | A kind of list worm gear twin worm deceleration device initialization gap removing method |
| CN109290396A (en) * | 2018-11-06 | 2019-02-01 | 广东双兴新材料集团有限公司 | A kind of perpendicular wheel seat of tuber forming |
| CN109630618A (en) * | 2019-01-17 | 2019-04-16 | 杭州星河传动机械研究院有限公司 | A kind of synchronous high-mechanic speed reducer |
| CN112696462A (en) * | 2020-12-23 | 2021-04-23 | 河南易沃克工业设备有限公司 | Gear transmission device for pipeline cutting equipment |
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| CN103335064B (en) | 2017-11-10 |
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Granted publication date: 20171110 Termination date: 20180704 |