CN102974900A - Rotational motion clearance eliminating mechanism for working table of gear hobbing machine - Google Patents
Rotational motion clearance eliminating mechanism for working table of gear hobbing machine Download PDFInfo
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- CN102974900A CN102974900A CN2012105823720A CN201210582372A CN102974900A CN 102974900 A CN102974900 A CN 102974900A CN 2012105823720 A CN2012105823720 A CN 2012105823720A CN 201210582372 A CN201210582372 A CN 201210582372A CN 102974900 A CN102974900 A CN 102974900A
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Abstract
The invention discloses a rotational motion clearance eliminating mechanism for a working table of a gear hobbing machine, which comprises a worm gear, an indexing worm and a damping worm, wherein the indexing worm is matched with the worm gear and is used for controlling a rotating angle of the worm gear; and the damping worm is matched with the worm gear and is used for eliminating a transmission clearance of the indexing worm. According to the rotational motion clearance eliminating mechanism for the working table of the gear hobbing machine, which is disclosed by the invention, in the process that the indexing worm drives the worm gear to rotate, the transmission surface of the damping worm of the rotational motion clearance eliminating mechanism provides a pushing force in the direction opposite to the rotating direction of the worm gear to the worm gear to enable the transmission surface of the worm gear and the transmission surface of the indexing worm to be always kept in contact, so that the transmission clearance of a worm gear and worm transmission pair is eliminated, indexing rotating accuracy of the working table fixed on the worm gear is improved and the rotational motion clearance eliminating mechanism is beneficial for improving gear processing accuracy; the damping worm is supported by a hydrostatic bearing structure; and the hydrostatic bearing structure has good rigidity and large bearing capacity, is difficult to damage, can also ensure transmission accuracy when the worm gear and worm transmission pair bears a large load, and can enable the clearance eliminating mechanism to be free of maintenance for a long time.
Description
Technical field
The present invention relates to a kind of gear-hobbing machine, particularly a kind of workbench of gear-hobbing machine.
Background technology
The gyration of gear hobbing machine worktable of the prior art generally all is to drive by Worm and worm-wheel gearing, and the stage body that is about to work is fixed on the worm gear, drives worm screw by actuating unit and rotates, and realizes that the calibration of work stage body rotates.
But, because there is fit clearance in the Worm Wheel System pair, therefore can cause workbench calibration rotation error, and then reduce the machining accuracy of gear-hobbing machine.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of gear hobbing machine worktable anti-backlash mechanism that rotatablely moves, it can eliminate the secondary error of Worm Wheel System, improves the calibration rotation precision of workbench, and then the raising machining accuracy, the defective that exists to solve existing Worm and worm-wheel gearing.
The gear hobbing machine worktable of the present invention anti-backlash mechanism that rotatablely moves comprises worm gear, cooperates the indexing worm that is used for control worm gear rotational angle with worm gear and cooperates the damping worm screw that is used for elimination indexing worm drive gap with worm gear.
Further, described worm gear is the duplex worm gear, and described indexing worm cooperates with first of duplex worm gear, and described damping worm screw cooperates with second of duplex worm gear;
Further, also comprise the worm screw supporting seat, the two ends of described damping worm screw are separately positioned on the worm screw supporting seat, and are provided with static-pressure oil chamber between the mating surface of the two ends of damping worm screw and worm screw supporting seat, are provided with oil inlet passage and the oil discharge passage that is communicated with static-pressure oil chamber on the described worm screw supporting seat;
Further, the end of described damping worm screw is provided with it and upwards is rotatably assorted in week, and the piston of secure fit in the axial direction, described piston cooperates formation driving damping worm screw to move along its axis with the worm screw supporting seat cylinder structure;
Further, described cylinder structure is the two-way cylinder structure, be provided with annular boss on the described outside piston face, form two oil pockets of two-way cylinder structure between the both ends of the surface of described annular boss and the worm screw supporting seat, be provided with the oil duct that is communicated with oil pocket on the described worm screw supporting seat.
Beneficial effect of the present invention:
1, the gear hobbing machine worktable of the present invention anti-backlash mechanism that rotatablely moves, drive in the process of worm gear rotation at indexing worm, the driving face of its damping worm screw is to one on the worm gear thrust with the worm gear direction of rotation, the worm-drive face is remained with the indexing worm driving face to be contacted, thereby eliminated the drive gap of Worm Wheel System pair, improve the calibration rotation precision that is fixed on the worm gear upper table, be conducive to improve the Gear Processing precision.
2, the gear hobbing machine worktable of the present invention anti-backlash mechanism that rotatablely moves, it is by hydrostatic bearing structure supporting damping worm screw, the hydrostatic bearing structure good rigidly, the carrying greatly, not fragile, when the Worm Wheel System pair is born large load, also can guarantee transmission accuracy, can make anti-backlash mechanism non-maintaining for a long time.
Description of drawings
Fig. 1 is that the invention gear hobbing machine worktable anti-backlash mechanism that rotatablely moves is assembled in sectional structure schematic diagram on the workbench;
Fig. 2 is the axial cutaway view of damping worm screw section;
Fig. 3 is B section zoomed-in view among Fig. 2.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
As shown in the figure, the present embodiment gear hobbing machine worktable anti-backlash mechanism that rotatablely moves comprises worm gear 1, cooperates the indexing worm 2 that is used for control worm gear 1 rotational angle with worm gear 1 and cooperates the damping worm screw 3 that is used for elimination indexing worm 2 drive gaps with worm gear 1.
In implementation, gear hobbing machine worktable 4 is fixed on the worm gear 1, drives worm gear 1 by indexing worm 2 and does the calibration rotation, realizes the rotary feed campaign of Gear Processing.
Drive in the process that worm gears 1 rotate at indexing worm 2, give 1 one on the worm gear thrust with the worm gear direction of rotation by damping worm screw 3, the worm-drive face is remained with the indexing worm driving face contact, with the drive gap of elimination Worm Wheel System pair.This anti-backlash mechanism has improved the calibration rotation precision of workbench 4, is conducive to improve the machining accuracy of gear.
As the improvement to present embodiment, described worm gear 1 is the duplex worm gear, described indexing worm 2 cooperates with first of duplex worm gear, described damping worm screw 3 cooperates with second of duplex worm gear, adopt the duplex worm gear, can simplify the overall structure of gear hobbing machine worktable, the package assembly of anti-backlash mechanism and workbench is simplified, be convenient to make.Certainly in different embodiments, adopt the simply connected worm gear, indexing worm 2 is arranged on the different circumferential parts of simply connected worm gear with damping worm screw 3, also can realize purpose of the present invention.
As the improvement to present embodiment, this gear hobbing machine worktable anti-backlash mechanism that rotatablely moves also comprises worm screw supporting seat 5, the two ends of described damping worm screw 3 are separately positioned on the worm screw supporting seat 5, and be provided with static-pressure oil chamber 6 between the mating surface of the two ends of damping worm screw 3 and worm screw supporting seat 5, be provided with the oil inlet passage 7 and the oil discharge passage 8 that are communicated with static-pressure oil chamber 6 on the described worm screw supporting seat 5.By hydrostatic bearing structure supporting damping worm screw 3, the hydrostatic bearing structure good rigidly, the carrying greatly, not fragile, when the Worm Wheel System pair is born large load, also can guarantee transmission accuracy, can make anti-backlash mechanism non-maintaining for a long time.
As the improvement to present embodiment, the end of described damping worm screw 3 is provided with it and upwards is rotatably assorted in week, and the piston 9 of secure fit in the axial direction, and described piston 9 and worm screw supporting seat are joined 5 and closed to form and drive the cylinder structure that damping worm screw 3 moves along its axis.By the axial distance of cylinder structure control damping worm screw 3, realize the resistance that 3 pairs of worm gears of damping adjusting worm screw apply, thereby reliably eliminate the Worm Wheel System gap.Certainly in different embodiments, also can adopt control damping worm screw 3 to control the resistance that 3 pairs of worm gears of damping worm screw apply with the worm gear asynchronous rotary time difference, can play equally the purpose of eliminating the Worm Wheel System gap.
As the improvement to present embodiment, described cylinder structure is the two-way cylinder structure, be provided with annular boss on described piston 9 peripheries, form two oil pockets 10 of two-way cylinder structure between the both ends of the surface of described annular boss and the worm screw supporting seat 3, be provided with the oil duct 11 that is communicated with oil pocket 10 on the described worm screw supporting seat 5; Cylinder structure is integrated on the worm screw supporting base 5, can make gear hobbing machine worktable compactness simple for structure, the two-way cylinder structure can accurately be controlled the distance that damping worm screw 3 moves back and forth in the axial direction simultaneously, can guarantee can not impact Worm Wheel System when eliminating the Worm Wheel System gap.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (5)
1. gear hobbing machine worktable anti-backlash mechanism that rotatablely moves is characterized in that: comprise worm gear, cooperate the indexing worm that is used for control worm gear rotational angle with worm gear and cooperates the damping worm screw that is used for elimination indexing worm drive gap with worm gear.
2. the gear hobbing machine worktable according to claim 1 anti-backlash mechanism that rotatablely moves, it is characterized in that: described worm gear is the duplex worm gear, and described indexing worm cooperates with first of duplex worm gear, and described damping worm screw cooperates with second of duplex worm gear.
3. the gear hobbing machine worktable according to claim 1 and 2 anti-backlash mechanism that rotatablely moves, it is characterized in that: also comprise the worm screw supporting seat, the two ends of described damping worm screw are separately positioned on the worm screw supporting seat, and be provided with static-pressure oil chamber between the mating surface of the two ends of damping worm screw and worm screw supporting seat, be provided with oil inlet passage and the oil discharge passage that is communicated with static-pressure oil chamber on the described worm screw supporting seat.
4. the gear hobbing machine worktable according to claim 3 anti-backlash mechanism that rotatablely moves, it is characterized in that: the end of described damping worm screw is provided with it and upwards is rotatably assorted in week, and the piston of secure fit in the axial direction, described piston cooperates formation driving damping worm screw to move along its axis with the worm screw supporting seat cylinder structure.
5. the gear hobbing machine worktable according to claim 4 anti-backlash mechanism that rotatablely moves, it is characterized in that: described cylinder structure is the two-way cylinder structure, be provided with annular boss on the described outside piston face, form two oil pockets of two-way cylinder structure between the both ends of the surface of described annular boss and the worm screw supporting seat, be provided with the oil duct that is communicated with oil pocket on the described worm screw supporting seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105823720A CN102974900A (en) | 2012-12-28 | 2012-12-28 | Rotational motion clearance eliminating mechanism for working table of gear hobbing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105823720A CN102974900A (en) | 2012-12-28 | 2012-12-28 | Rotational motion clearance eliminating mechanism for working table of gear hobbing machine |
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| CN102974900A true CN102974900A (en) | 2013-03-20 |
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| CN2012105823720A Pending CN102974900A (en) | 2012-12-28 | 2012-12-28 | Rotational motion clearance eliminating mechanism for working table of gear hobbing machine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104439543A (en) * | 2014-11-20 | 2015-03-25 | 武汉国威重型机床股份有限公司 | Method for installing worm support |
| CN105221688A (en) * | 2015-10-31 | 2016-01-06 | 重庆机床(集团)有限责任公司 | A kind of gear hobbing machine Changeable Lead screw drive mechanism and utilize this mechanism to eliminate the method for index worm gear pair sideshake |
| CN107350567A (en) * | 2017-09-20 | 2017-11-17 | 红河学院 | A kind of high-precision table top of gear grinding machines |
| CN107796343A (en) * | 2017-11-17 | 2018-03-13 | 杭州航验环境技术有限公司 | A kind of high-precision positioner and high accuracy positioning householder method |
| CN109333139A (en) * | 2018-11-29 | 2019-02-15 | 重庆机床(集团)有限责任公司 | A kind of table drive worm screw damped control system |
| CN109780171A (en) * | 2019-01-17 | 2019-05-21 | 广州市昊志机电股份有限公司 | A kind of twin worm to prolong the service life is from gap-eliminating structure |
| CN112324862A (en) * | 2020-10-30 | 2021-02-05 | 广州市昊志机电股份有限公司 | Worm gear and worm transmission mechanism, rotary table and method for eliminating back clearance of worm gear and worm |
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| US6003409A (en) * | 1996-07-08 | 1999-12-21 | Klingelnberg Soehne Gmbh | Play-free device for driving a rotary table |
| CN201544039U (en) * | 2009-11-05 | 2010-08-11 | 齐重数控装备股份有限公司 | Numerical-control double-worm anti-backlash hydrostatic rotating worktable with high precision |
| CN101941155A (en) * | 2010-09-06 | 2011-01-12 | 徐国胜 | Double-worm precision numerically controlled rotary table |
| 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 |
| CN202963671U (en) * | 2012-12-28 | 2013-06-05 | 重庆机床(集团)有限责任公司 | Rotational motion clearance eliminating mechanism for working table of gear hobbing machine |
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2012
- 2012-12-28 CN CN2012105823720A patent/CN102974900A/en active Pending
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| US6003409A (en) * | 1996-07-08 | 1999-12-21 | Klingelnberg Soehne Gmbh | Play-free device for driving a rotary table |
| CN201544039U (en) * | 2009-11-05 | 2010-08-11 | 齐重数控装备股份有限公司 | Numerical-control double-worm anti-backlash hydrostatic rotating worktable with high precision |
| CN101941155A (en) * | 2010-09-06 | 2011-01-12 | 徐国胜 | Double-worm precision numerically controlled rotary table |
| 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 |
| CN202963671U (en) * | 2012-12-28 | 2013-06-05 | 重庆机床(集团)有限责任公司 | Rotational motion clearance eliminating mechanism for working table of gear hobbing machine |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104439543A (en) * | 2014-11-20 | 2015-03-25 | 武汉国威重型机床股份有限公司 | Method for installing worm support |
| CN105221688A (en) * | 2015-10-31 | 2016-01-06 | 重庆机床(集团)有限责任公司 | A kind of gear hobbing machine Changeable Lead screw drive mechanism and utilize this mechanism to eliminate the method for index worm gear pair sideshake |
| CN107350567A (en) * | 2017-09-20 | 2017-11-17 | 红河学院 | A kind of high-precision table top of gear grinding machines |
| CN107796343A (en) * | 2017-11-17 | 2018-03-13 | 杭州航验环境技术有限公司 | A kind of high-precision positioner and high accuracy positioning householder method |
| CN107796343B (en) * | 2017-11-17 | 2024-05-10 | 杭州航验环境技术有限公司 | High-precision positioning device and high-precision positioning auxiliary method |
| CN109333139A (en) * | 2018-11-29 | 2019-02-15 | 重庆机床(集团)有限责任公司 | A kind of table drive worm screw damped control system |
| CN109780171A (en) * | 2019-01-17 | 2019-05-21 | 广州市昊志机电股份有限公司 | A kind of twin worm to prolong the service life is from gap-eliminating structure |
| CN112324862A (en) * | 2020-10-30 | 2021-02-05 | 广州市昊志机电股份有限公司 | Worm gear and worm transmission mechanism, rotary table and method for eliminating back clearance of worm gear and worm |
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Application publication date: 20130320 |