CN102996758A - Back clearance eliminating device of transmission mechanism - Google Patents
Back clearance eliminating device of transmission mechanism Download PDFInfo
- Publication number
- CN102996758A CN102996758A CN201110275337XA CN201110275337A CN102996758A CN 102996758 A CN102996758 A CN 102996758A CN 201110275337X A CN201110275337X A CN 201110275337XA CN 201110275337 A CN201110275337 A CN 201110275337A CN 102996758 A CN102996758 A CN 102996758A
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- worm
- worm screw
- driving mechanism
- worktable
- elimination device
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Abstract
The invention discloses a back clearance eliminating device of a transmission mechanism. A transmission mechanism which can drive a worktable to act is arranged on a platform and is provided with a worm which is driven by a power source and has a left toothed section and a right toothed section which are integrally molded. The worm is arranged in parallel with the gear rack of the worktable, so as to ensure that when the worm respectively drives two worm gears to rotate, one worm gear realizes steering transmission through an intermediate gear to drive the worktable to move horizontally. Besides, a back clearance eliminating device is arranged between the left tooth section and the right toothed section of the worm. The back clearance eliminating device drives a piston through a power unit to generate power and realize pre-pressing adjustment, so as to push the worm to axially move to eliminate a back clearance. Therefore, the pushing force can be mutually set off and the torsion can be averagely born through the left toothed section and the right toothed section of the worm to drive the worm gears, the transmission of the large torsion is realized and the back clearance eliminating device reaches the effects of accurate transmission and accurate positioning.
Description
Technical field
The present invention is relevant for a kind of back gap elimination device of driving mechanism, refers in particular between a kind of backlash of the driving mechanism for worktable, except the transmission effect with large torsion, also reaches the back gap elimination device of the driving mechanism of back clearance eradicating efficacy.
Background technique
General in mechanically actuated the most common to be the utilization of driving mechanism, and the using scope of driving mechanism is for the most extensive, the technology of using simultaneously also has all multi-methods, lift such as Japanese kokai publication hei 7-148632 number, it is respectively at being provided with the two parallel and worm screws of establishing in the board, two worm screws are corresponding transmission two worm gears respectively, and this two worm gear worktable of corresponding transmission top again, yet, said structure is two to be arranged in parallel because of worm screw, make its thrust of can't cancelling out each other when transmission, therefore, the transmission end thrust is large.
In addition, disclosed another embodiment's technology in this day this case is for being provided with interior worm screw in board, and in interior worm screw outside corresponding socket one outer worm screw again, by corresponding transmission two worm gears of two concentric inside and outside worm screws, and this two worm gear worktable of corresponding transmission top again, yet, though this inside and outside worm screw is the transmission of concentric, but it is because of sheathed combination, and mechanism is complicated, simultaneously, the fabricating cost of two worm screws is high, and also need manually to adjust accurate corresponding assembling could with the worm gear engagement driving; In addition, the inside and outside worm screw of corresponding socket also can't have the design (can't have the control of adjustment back clearance function) that axial displacement is controlled, namely being assembled in of this inside and outside worm screw there is no tool back clearance state basically, if but needs are adjusted the words of back clearance state, it needs the adjustment for the circumferential phase of inside and outside worm screw, just the back clearance state can be eliminated, but then need dismantle clamp holder for the circumferential phase adjustment of above-mentioned inside and outside worm screw just can carry out, therefore, has the defective that hinders procedure at implementation and operation.
And for defects, inventor and research and development application have the back gap elimination device of No. 201033501 a kind of driving mechanisms of publication number, it mainly is provided with the driving mechanism that can drive the worktable start in board, wherein be provided with the worm screw that a power source drives the left and right tooth of tool, allow worm screw drive respectively two worm gears, so that the worm drive worktable rotates, this worm screw has the back clearance of Adjustment of displacement transmission worm gear simultaneously.Yet, said structure because of worm screw by the center line intersection at angle between two worm gears, and the element of action worm screw axial displacement need place the rear side end of this worm screw, therefore, the configuration on the board takes up space.
Edge is, in view of this inventor adheres to for many years the abundant of these relevant industries and designs and develops and the actual fabrication experience, is studied improvement for existing structure and disappearance, provide a kind of back gap elimination device of driving mechanism, in the hope of reaching the purpose of better practical value.
Summary of the invention
The technical problem that the present invention solves provides a kind of back gap elimination device of driving mechanism, eliminates the back clearance of worm and wheel when transmission.
Technical solution of the present invention is:
A kind of back gap elimination device of driving mechanism, be provided with the tooth bar that is stationary state in board, use described tooth bar engagement transmission mechanism and drive worktable displacement, wherein: this driving mechanism is provided with power source driving and has a left side, the worm screw of right tooth section, and the left side of this worm screw, the back gap elimination device that has energy Adjustment of displacement worm gear between right tooth section, allow the left side of this worm screw, right tooth section drives respectively first, the second worm gear, and the central shaft of this first worm gear is provided with drive wheel, the breast wheel engagement driving of this drive wheel correspondence and one in order to turn to, again with power transmission to the first follower, and via the set drive wheel of this first follower central shaft and the tooth bar engagement of this worktable; And the central shaft of this second worm gear is provided with drive wheel, transmit power and this drive wheel is corresponding with the engagement of the second follower, and via the tooth bar engagement of the set drive wheel of this second follower central shaft and this worktable, to allow the drive wheel of described first, second follower drive this worktable parallel shift.
It mainly is provided with the driving mechanism that can drive the worktable start in board, be provided with power source and drive the worm screw that is formed with left and right tooth section, and this worm screw is parallel to setting with the tooth bar of worktable, rotate to drive respectively two worm gears when this worm screw, and the one worm gear turns to transmission via a breast wheel, by this can drive table translation person; By this, with the left and right tooth section of worm screw transmission worm gear can cancel out each other thrust, equalization of incidence torsion, reach the reception and registration effect of large torsion.
A kind of back gap elimination device of driving mechanism, have in worktable and to make the driving mechanism that this worktable carrying workpiece can parallel shift, this driving mechanism is provided with power source, this power source drives the left and right tooth section of worm screw and drives worm gear in the tooth bar action of stationary state, to make worktable displacement, and corresponding group is provided with back gap elimination device on this worm screw, this back gap elimination device includes: a shaft joint, corresponding group is established force-output shaft and this worm screw that links described power source, and is provided with the member that absorbs this worm screw microdisplacement; One axle sleeve, correspondence are mounted between the left and right tooth section of this worm screw, and this axle sleeve is provided with pipeline; One power unit, correspondence are led on the pipeline that is located at this axle sleeve; And a piston, it is inner that correspondence is arranged on this axle sleeve, and coat this worm screw by bearing, and this piston correspondence is positioned at this power unit input power part, drives and related this worm screw displacement and answer to be subjected to this power unit.
It mainly is provided with the driving mechanism that can drive the worktable start in board, be provided with power source and drive the worm screw that is formed with left and right tooth section, between the left and right tooth section of worm screw, be provided with back gap elimination device, this back gap elimination device produces power and precompressed adjustment via a power unit driven plunger, uses to promote worm screw axial displacement elimination back clearance person; By this, reach the effect person of accurate transmission and location with back gap elimination device.
The back gap elimination device of driving mechanism of the present invention, it is mainly torsion when increasing transmission, eliminate thrust and improve the factor such as space configuration, use the mode of utilizing the motivational drive piston, so that it reaches the axial displacement worm screw, eliminate the back clearance of worm and wheel when transmission, and then reach the elimination of the back clearance between worm screw and worktable transmission.
By the above, the composition of this element with use implementation as can be known, the present invention and existing structure have following plurality of advantages in comparison, details are as follows:
1, the back gap elimination device of driving mechanism of the present invention, at fixing tooth bar upper driving, with the drive worktable displacement, so shared space is little and relatively can reach fast transmission effect, has the existing defective of improvement by the worm and wheel correspondence.
2, set integrally formed worm screw with left and right tooth in the back gap elimination device of driving mechanism of the present invention drives respectively worm gear and rotates, and can allow thrust cancel each other and equalization of incidence torsion, reaches with simple small organization, passes on the design of large torsion.
3, the back gap elimination device of driving mechanism of the present invention utilizes the transmission of worm and wheel can control wearing and tearing and the impact wreckage that causes without the back clearance state, except reaching the transmission location of worm and wheel in pre-Trimetaphan, the working life that also can guarantee member.
Description of drawings
Fig. 1 is whole cross-sectional schematic one of the present invention;
Fig. 2 is whole cross-sectional schematic two of the present invention;
Fig. 3 is the transmission schematic representation of overlooking of the present invention;
Fig. 4 is the local enlarged diagram of action of the present invention (the back clearance state is arranged);
Fig. 5 is action schematic representation of the present invention (back clearance elimination state);
Fig. 6 is rack-driving enlarged diagram of the present invention (back clearance elimination state);
Fig. 7 passes on the view one of power when being back clearance elimination of the present invention;
Fig. 8 passes on the view two of power when being back clearance elimination of the present invention;
Fig. 9 is rack-driving enlarged diagram of the present invention (not doing back clearance eliminates).
The primary component label declaration:
The present invention:
2: driving mechanism 21: power source 211: force-output shaft
22: worm screw 221: right tooth section 222: left tooth section
241: drive wheel 25: 26: the first followers of breast wheel
261: 27: the second followers 271 of drive wheel: drive wheel
28: tooth bar 3: back gap elimination device 31: shaft joint
32: axle sleeve 321: pipeline 33: power unit
34: piston 341: bearing X: backlash space
Y: gap
Embodiment
For the technology contents, the goal of the invention that make the present invention use and the effect reached thereof have more complete and clearly disclose, hereby in lower detailed description it, and see also the graphic and figure number of taking off:
At first, see also Fig. 1 to shown in Figure 3, whole cross-sectional schematic for the back gap elimination device of a kind of driving mechanism of the present invention, it has the driving mechanism 2 that makes worktable carrying workpiece and have parallel shift in worktable, this driving mechanism 2 be provided with power source 21 drive have left and right tooth section 222,221 worm screw 22 (this left and right tooth section 222,221 is integrally formed on the worm screw 22) drives respectively two worm gears 23,24 and make the worktable action, and be provided with back gap elimination device 3 in worm screw 22, this back gap elimination device 3 includes:
One shaft joint 31, corresponding group are established and are linked power source 21 force-output shafts 211 with worm screw 22 and be provided with the member that absorbs worm screw 22 microdisplacements;
One axle sleeve 32, correspondence are mounted between the left and right tooth section 222,221 of worm screw 22, and axle sleeve 32 is provided with pipeline 321;
One power unit 33, correspondence are led on the pipeline 321 that is located at axle sleeve 32; And
One piston 34, correspondence are arranged on axle sleeve 32 inside, and mat bearing 341 coating worm screws 22, and these piston 34 correspondences are positioned at power unit 33 input power parts, drive related worm screw 22 displacements and answers to be subjected to power unit 33.
See also Fig. 1 to shown in Figure 8, when assembling, correspondence is provided with driving mechanism 2 in the worktable below, be provided with a power source 21 in this driving mechanism 2, and the corresponding group of force-output shaft 211 ends of power source 21 is established the shaft joint 31 of back gap elimination device 3, make shaft joint 31 1 end windings have a left side, right tooth section 222,221 worm screw 22, the left side of this worm screw 22, right tooth section 222,221 is corresponding to first respectively, the second worm gear 23,24 engagements, make its first, the second worm gear 23,24 switched in opposite, can allow thrust cancel each other and equalization of incidence torsion, continue, this is first years old, the second worm gear 23, be respectively equipped with the drive wheel 231 of interlock on 24 the central shaft, 241, and drive wheel 231 correspondences and of this first worm gear 23 turn to breast wheel 25 engagement driving of effect, again with power transmission to the first follower 26, and via the first follower 26 central shafts set drive wheel 261 and tooth bar 28 engagements; The drive wheel 241 of the second worm gear 24 is correspondence and the second follower 27 engagement transmission power then, and via the second follower 27 central shafts set drive wheel 271 and tooth bar 28 engagements that are stationary state, so, first, second follower 26,27 drive wheel 261,271 are rotating in same direction and drive the worktable parallel shift on tooth bar 28.
Continue, between worm screw 22 left and right tooth sections 222,221, be provided with axle sleeve 32 again, and pipeline 321 correspondences on the axle sleeve 32 connect power unit 33, this power unit 33 can oil pressure or the air pressure mode for it, be pneumatic cylinder or oil hydraulic cylinder (for utilizing the action of programmable control power unit), in axle sleeve 32 interior built-up pistons 34, allow piston 34 mat bearings 341 coat worm screw 22, and correspondence is positioned at power unit 33 input power parts again.
When operation, it drives first when power source 21 drives worm screw 22, the second worm gear 23,24 and make worktable action, under transmission at a high speed, its worm screw 22 and first, the second worm gear 23,24 transmission meeting formation has inertia and can transmit rotation, and make its worm screw 22 and first, the second worm gear 23, produce the backlash space X of tooth and between cog between 24, and the existence of backlash space X reduces abrasion and the collision of tooth and between cog generation, but in stopping or during the low speed precompressed, need this backlash space X is eliminated to allow tooth and between cog accurate positioning transmission, therefore, namely start this back gap elimination device 3, can move by programmable control power unit 33, allow power unit 33 via pipeline 321 input powers pushing piston 34, make its piston 34 together with driving worm screw 22 displacements, this moment, shaft joint 31 meetings absorbed the slightly displacement amount (this shaft joint 31 is provided with gap Y and absorbs displacement amount) that this worm screw 22 produces, make its worm screw 22 left sides, right tooth section 222,221 tooth and first, the second worm gear 23,24 tooth is fitted, and the backlash space X between tooth and the tooth is eliminated, can smooth-going transmission and accurate location when downshifting.
Continue, by the state that Figure 6 shows that the expression back clearance is eliminated, when when back clearance is eliminated its first, the second follower 26,27 drive wheel 261,271 are reverse drive, therefore, drive wheel 261, the reverse corresponding transmission worktable tooth bar 28 of 271 meetings, in accompanying drawing, represent, the drive wheel 261 of this first follower 26 is the right-hand rotation transmission, therefore, the right flank of tooth of drive wheel 261 and the left flank of tooth of tooth bar 28 fit, and the drive wheel 271 of the second follower 27 is the left-hand rotation transmission, therefore, the left flank of tooth of drive wheel 271 and the right flank of tooth of tooth bar 28 fit, so that accurate transmission position to be arranged under the state of eliminating at back clearance; And the view one, two of Fig. 7 and expression back clearance shown in Figure 8 reception and registration power when eliminating, the kind of drive of its power when back clearance is eliminated, in the left-hand rotation transmission of drive wheel 271 on tooth bar 28 of the right-hand rotation transmission on the tooth bar 28 or the second follower 27, drive the worktable parallel shift via the drive wheel 261 of selecting the first follower 26.
And the state that back clearance is eliminated of not doing that is expressed as shown in Figure 9, work as drive state, its first, second follower 26,27 drive wheel 261,271 are rotating in same direction and drive the worktable parallel shift on tooth bar 28, this two drive wheel 261,271 is the left-hand rotation transmission, therefore, drive wheel 261,271 the left flank of tooth and the right flank of tooth of tooth bar 28 fit, and in tooth bar 28 upper drivings, reach the effect of sharing out equally simultaneously torsion.In addition, above-mentioned tooth bar 28 structures reach speed soon and the effect that does not take up space with the conduction of the rolling between gear.
The back gap elimination device of a kind of driving mechanism of the present invention, back clearance removing structure between especially a kind of backlash of the driving mechanism for worktable, divided by driving worm gear, worm screw has outside the transmission effect of large torsion, the mode of recycling motivational drive piston, so that it reaches the axial displacement worm screw, eliminate the back clearance of worm and wheel when transmission, and then the back clearance that reaches between worm screw and worktable transmission is eliminated effect.
The above only is the schematic embodiment of the present invention, is not to limit scope of the present invention.Any those skilled in the art, the equivalent variations of having done under the prerequisite that does not break away from design of the present invention and principle and modification all should belong to the scope of protection of the invention.
Claims (6)
1. the back gap elimination device of a driving mechanism is characterized in that, the back gap elimination device of this driving mechanism is provided with the tooth bar that is stationary state in board, use described tooth bar engagement transmission mechanism and drive worktable displacement, wherein:
This driving mechanism is provided with a power source and drives the worm screw with left and right tooth section, and the intersegmental back gap elimination device with energy Adjustment of displacement worm gear of the left and right tooth of this worm screw, allow the left and right tooth section of this worm screw drive respectively first, second worm gear, and the central shaft of this first worm gear is provided with drive wheel, the breast wheel engagement driving of this drive wheel correspondence and one in order to turn to, again with power transmission to the first follower, and via the set drive wheel of this first follower central shaft and the tooth bar engagement of this worktable; And the central shaft of this second worm gear is provided with drive wheel, transmit power and this drive wheel is corresponding with the engagement of the second follower, and via the tooth bar engagement of the set drive wheel of this second follower central shaft and this worktable, to allow the drive wheel of described first, second follower drive this worktable parallel shift.
2. the back gap elimination device of driving mechanism as claimed in claim 1 is characterized in that the left and right tooth section of this worm screw is integrally formed.
3. the back gap elimination device of a driving mechanism, it is characterized in that, the back gap elimination device of this driving mechanism has in worktable and makes the driving mechanism that this worktable carrying workpiece can parallel shift, this driving mechanism is provided with power source, this power source drives the left and right tooth section of worm screw and drives worm gear in the tooth bar action of stationary state, making worktable displacement, and corresponding group is provided with back gap elimination device on this worm screw, and this back gap elimination device includes:
One shaft joint, corresponding group is established force-output shaft and this worm screw that links described power source, and is provided with the member that absorbs this worm screw microdisplacement;
One axle sleeve, correspondence are mounted between the left and right tooth section of this worm screw, and this axle sleeve is provided with pipeline;
One power unit, correspondence are led on the pipeline that is located at this axle sleeve; And
It is inner that one piston, correspondence are arranged on this axle sleeve, and coat this worm screw by bearing, and this piston correspondence is positioned at this power unit input power part, drives and related this worm screw displacement and answer to be subjected to this power unit.
4. the back gap elimination device of driving mechanism as claimed in claim 3 is characterized in that the left and right tooth section on this worm screw is one of the forming, and with described left and right tooth section corresponding engagement two described worm gears respectively.
5. the back gap elimination device of driving mechanism as claimed in claim 3 is characterized in that this power unit is control able to programme.
6. the back gap elimination device of driving mechanism as claimed in claim 4 is characterized in that this power unit is control able to programme.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110275337XA CN102996758A (en) | 2011-09-16 | 2011-09-16 | Back clearance eliminating device of transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110275337XA CN102996758A (en) | 2011-09-16 | 2011-09-16 | Back clearance eliminating device of transmission mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102996758A true CN102996758A (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110275337XA Pending CN102996758A (en) | 2011-09-16 | 2011-09-16 | Back clearance eliminating device of transmission mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335064A (en) * | 2013-07-04 | 2013-10-02 | 济南若泰数控科技有限公司 | Automatic clearance-removing double-worm speed reducer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1984004570A1 (en) * | 1983-05-16 | 1984-11-22 | Roland Guichard | Gear transmission comprising two worm screws |
| US4589299A (en) * | 1983-06-23 | 1986-05-20 | Jidosha Denki Kogyo Kabushiki Kaisha | Reduction motor shaft provided with screw type double |
| US4754660A (en) * | 1983-04-28 | 1988-07-05 | Jidosha Denki Kogyo Kabushiki Kaisha | Reduction gearing device for an automobile accessory motor |
| DE4010162C2 (en) * | 1990-03-30 | 1999-12-16 | Ott Gmbh & Co Kg | Worm gear |
| EP1793143A1 (en) * | 2005-12-01 | 2007-06-06 | Bonfiglioli Riduttori S.p.A. | Worm/Crown-wheel-assembly gear reducer comprising a torque limiter |
| TW200833975A (en) * | 2006-10-27 | 2008-08-16 | Mitsubishi Heavy Ind Ltd | Backlash eliminator |
| TW201033501A (en) * | 2009-03-03 | 2010-09-16 | Factory Automation Technology | Apparatus for elimination of back clearance for a transmission mechanism |
-
2011
- 2011-09-16 CN CN201110275337XA patent/CN102996758A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4754660A (en) * | 1983-04-28 | 1988-07-05 | Jidosha Denki Kogyo Kabushiki Kaisha | Reduction gearing device for an automobile accessory motor |
| WO1984004570A1 (en) * | 1983-05-16 | 1984-11-22 | Roland Guichard | Gear transmission comprising two worm screws |
| US4589299A (en) * | 1983-06-23 | 1986-05-20 | Jidosha Denki Kogyo Kabushiki Kaisha | Reduction motor shaft provided with screw type double |
| DE4010162C2 (en) * | 1990-03-30 | 1999-12-16 | Ott Gmbh & Co Kg | Worm gear |
| EP1793143A1 (en) * | 2005-12-01 | 2007-06-06 | Bonfiglioli Riduttori S.p.A. | Worm/Crown-wheel-assembly gear reducer comprising a torque limiter |
| TW200833975A (en) * | 2006-10-27 | 2008-08-16 | Mitsubishi Heavy Ind Ltd | Backlash eliminator |
| TW201033501A (en) * | 2009-03-03 | 2010-09-16 | Factory Automation Technology | Apparatus for elimination of back clearance for a transmission mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335064A (en) * | 2013-07-04 | 2013-10-02 | 济南若泰数控科技有限公司 | Automatic clearance-removing double-worm speed reducer |
| CN103335064B (en) * | 2013-07-04 | 2017-11-10 | 济南若泰数控科技有限公司 | A kind of automatic anti-backlash twin worm reductor |
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Application publication date: 20130327 |