CN202963671U - 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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- CN202963671U CN202963671U CN 201220737173 CN201220737173U CN202963671U CN 202963671 U CN202963671 U CN 202963671U CN 201220737173 CN201220737173 CN 201220737173 CN 201220737173 U CN201220737173 U CN 201220737173U CN 202963671 U CN202963671 U CN 202963671U
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- worm screw
- worm gear
- damping
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Abstract
The utility model discloses a rotational motion clearance eliminating mechanism for a working table of a gear hobbing machine. The rotational motion clearance eliminating mechanism 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, 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 so that the transmission surface of the worm gear and the transmission surface of the indexing worm are 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, can not be damaged easily, can also ensure transmission accuracy when the worm gear and worm transmission pair bears a heavy load, and can enable the clearance eliminating mechanism to be free of maintenance for a long time.
Description
Technical field
The utility model 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 is all generally to drive by Worm and worm-wheel gearing, and the stage body that is about to work is fixed on 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.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of gear hobbing machine worktable anti-backlash mechanism that rotatablely moves, and 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 utility model gear hobbing machine worktable anti-backlash mechanism that rotatablely moves comprises worm gear, coordinates with worm gear and be used for controlling the indexing worm of worm gear rotational angle and coordinating 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 coordinates with first of duplex worm gear, and described damping worm screw coordinates 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 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 coordinates 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 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 worm screw supporting seat, be provided with the oil duct that is communicated with oil pocket on described worm screw supporting seat.
The beneficial effects of the utility model:
1, the utility model gear hobbing machine worktable 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, 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 utility model gear hobbing machine worktable 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, also can guarantee transmission accuracy when the Worm Wheel System pair is born large load, can make anti-backlash mechanism non-maintaining for a long time.
Description of drawings
Fig. 1 is that the utility model gear hobbing machine worktable anti-backlash mechanism that rotatablely moves is assembled in sectional structure schematic diagram on workbench;
Fig. 2 is the axial cutaway view of damping worm screw section;
Fig. 3 is B section zoomed-in view in Fig. 2.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
As shown in the figure, the present embodiment gear hobbing machine worktable anti-backlash mechanism that rotatablely moves comprises worm gear 1, coordinates with worm gear 1 and be used for controlling the indexing worm 2 of worm gear 1 rotational angle and coordinating the damping worm screw 3 that is used for elimination indexing worm 2 drive gaps with worm gear 1.
In concrete enforcement, gear hobbing machine worktable 4 is fixed on 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, 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 the present embodiment, described worm gear 1 is the duplex worm gear, described indexing worm 2 coordinates with first of duplex worm gear, described damping worm screw 3 coordinates 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 and damping worm screw 3 are arranged on the different circumferential parts of simply connected worm gear, also can realize the purpose of this utility model.
As the improvement to the 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 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 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, also can guarantee transmission accuracy when the Worm Wheel System pair is born large load, can make anti-backlash mechanism non-maintaining for a long time.
As the improvement to the 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.Control the axial distance of damping worm screw 3 by cylinder structure, 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 with the worm gear asynchronous rotary time difference resistance that 3 pairs of worm gears of damping worm screw apply, can play equally the purpose of eliminating the Worm Wheel System gap.
As the improvement to the 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 worm screw supporting seat 3, be provided with the oil duct 11 that is communicated with oil pocket 10 on described worm screw supporting seat 5; Cylinder structure is integrated on worm screw supporting base 5, can make gear hobbing machine worktable compactness simple for structure, simultaneously the two-way cylinder structure can accurately be controlled the distance that damping worm screw 3 moves back and forth in the axial direction, 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 the technical solution of the utility model to be described, although with reference to preferred embodiment, the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not breaking away from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (5)
1. gear hobbing machine worktable anti-backlash mechanism that rotatablely moves is characterized in that: comprise worm gear, coordinate with worm gear and be used for controlling the indexing worm of worm gear rotational angle and coordinating 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 coordinates with first of duplex worm gear, and described damping worm screw coordinates 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 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 coordinates 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 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 worm screw supporting seat, be provided with the oil duct that is communicated with oil pocket on described worm screw supporting seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220737173 CN202963671U (en) | 2012-12-28 | 2012-12-28 | Rotational motion clearance eliminating mechanism for working table of gear hobbing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220737173 CN202963671U (en) | 2012-12-28 | 2012-12-28 | Rotational motion clearance eliminating mechanism for working table of gear hobbing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202963671U true CN202963671U (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220737173 Expired - Lifetime CN202963671U (en) | 2012-12-28 | 2012-12-28 | Rotational motion clearance eliminating mechanism for working table of gear hobbing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202963671U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102974900A (en) * | 2012-12-28 | 2013-03-20 | 重庆机床(集团)有限责任公司 | Rotational motion clearance eliminating mechanism for working table of gear hobbing machine |
| CN105171143A (en) * | 2015-10-31 | 2015-12-23 | 重庆机床(集团)有限责任公司 | Static-pressure supporting structure for indexing worm of hobbing machine |
| CN103817380B (en) * | 2014-03-10 | 2016-04-06 | 重庆大学 | Numerical control gear making machine synchronizing shaft error compensating method |
-
2012
- 2012-12-28 CN CN 201220737173 patent/CN202963671U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102974900A (en) * | 2012-12-28 | 2013-03-20 | 重庆机床(集团)有限责任公司 | Rotational motion clearance eliminating mechanism for working table of gear hobbing machine |
| CN103817380B (en) * | 2014-03-10 | 2016-04-06 | 重庆大学 | Numerical control gear making machine synchronizing shaft error compensating method |
| CN105171143A (en) * | 2015-10-31 | 2015-12-23 | 重庆机床(集团)有限责任公司 | Static-pressure supporting structure for indexing worm of hobbing machine |
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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: 20130605 |