CN103883679B - The Property of Plane-enveloped Worm Transmission of precision can be kept after worm gear teeth abrasion - Google Patents
The Property of Plane-enveloped Worm Transmission of precision can be kept after worm gear teeth abrasion Download PDFInfo
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- CN103883679B CN103883679B CN201310026371.2A CN201310026371A CN103883679B CN 103883679 B CN103883679 B CN 103883679B CN 201310026371 A CN201310026371 A CN 201310026371A CN 103883679 B CN103883679 B CN 103883679B
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- worm gear
- worm
- described worm
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- tooth
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/22—Toothed members; Worms for transmissions with crossing shafts, especially worms, worm-gears
- F16H55/24—Special devices for taking up backlash
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F11/00—Making worm wheels, e.g. by hobbing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/08—Profiling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/08—Profiling
- F16H55/0846—Intersecting-shaft arrangement of the toothed members
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
- Gear Transmission (AREA)
Abstract
The present invention can keep the Property of Plane-enveloped Worm Transmission of precision after the abrasion of a kind of worm gear teeth, wherein the teeth portion of worm gear is made up of the cutter axis direction along worm gear or the gear teeth consistent along the tooth length direction profile of tooth of the gear teeth that process along the rectilinear direction feeding angled with the axis of worm gear, the tooth top of worm gear is the face of cylinder, two lateral tooth flanks of worm gear teeth are plane, and two lateral tooth flanks of worm gear teeth are equal relative to the inclination angle of the axis of worm gear；Worm and wheel engages, can move along the axis of worm gear, when worm screw is moved to different position along the axis of worm gear, the flank of tooth of worm screw both sides is all respectively using the corresponding lateral tooth flank of worm gear teeth as generatrix, makes, by the meshing relation of worm gear Yu worm screw, the enveloping surface that generating motion is formed.The present invention is the characteristic distributions according to contact wire, after the wheel odontotripsis of worm gear, adopt mobile worm screw to worm gear teeth not with the region of worm screw contact wear, when not affecting its contact performance, extend service life.
Description
Technical field
The present invention relates to a kind of worm-drive, the Property of Plane-enveloped Worm Transmission of precision after particularly relating to the abrasion of a kind of worm gear teeth, can be kept.
Background technology
Worm-drive belongs to crossed-axes gear drive, has compact conformation, stable drive, the features such as noise is low, and kinematic error is little.Therefore it is widely used in plant equipment as deceleration device and accurate transmission mechanism.Along with the development of precision optical machinery, the requirement of precision indexing and accurate retarding machine is more and more higher, demand is also increasing.Property of Plane-enveloped Worm Transmission, compared with common worm-drive, except having common worm geared all advantages, also has the advantage that
1) number of teeth that common worm-drive contacts simultaneously is 1-2, and the worm screw of Property of Plane-enveloped Worm Transmission surrounds the number of teeth is the worm gear number of teeth 1/10th of worm gear, the number of teeth simultaneously contacted is up to more than 4～10, therefore bearing capacity is big, when same load, size can be substantially reduced, reduce material consumption.Simultaneously as Property of Plane-enveloped Worm Transmission is multiple tooth to contact simultaneously, and hence it is also possible to produce error average effect, improve precision.
2) common worm geared worm screw can grinding, but worm gear grinding is difficult, and the worm gear of Property of Plane-enveloped Worm Transmission and worm screw can grinding, thus, it is easy to precision manufactureing, it is possible to produce the worm-drive of higher precision.
3) common worm geared friction is big, and efficiency is low, and Property of Plane-enveloped Worm Transmission to be prone to set up dynamic pressure oil film, coefficient of friction little, transmission efficiency is high, generally can improve transmission efficiency 10-15%, saves the energy.Simultaneously as the coefficient of friction of Property of Plane-enveloped Worm Transmission is little, therefore, the dead band of its fine motion is little, it is possible to achieve fine motion less, it is achieved precision also just higher.
It is applied to the worm-drive of accurate indexing mechanism and accurate retarding machine, it is desirable to there is high precision and strict sideshake.From the foregoing, Property of Plane-enveloped Worm Transmission is more advantageous compared to common worm-drive from precision and life-span aspect, it is more suitable for accurate indexing mechanism and accurate retarding machine.But currently known Property of Plane-enveloped Worm Transmission is general upon wear, it is impossible to enough in adjusting the initial precision of maintenance and sideshake, such accurate indexing mechanism and accurate retarding machine just cannot be continuing with upon wear.
Chinese patent 99117383.X proposes a kind of side gap adjustable, plane enveloped torus worm-drive.It has better performance compared to common dual lead cylindrical worm transmission.This side gap adjustable, plane enveloped torus worm-drive is made up of a worm gear and an enveloping worm, and wherein the gear teeth two lateral tooth flank of worm gear is all plane, and the inclination angle of they relative worm gear axis such as is not desired at (the β1≠β2), so that worm-gear toothing is axially wedge shaped along it, by worm screw moving axially along worm gear, obtain suitable sideshake.This side gap adjustable, plane enveloped torus worm-drive is when initially installing, it is possible to sideshake adjusts suitable value, but after abrasion, it may appear that problems with:
1) owing to worm gear is easy to wear, and worm screw is worn and torn hardly, and the worm screw do not worn and not torn cannot be moved to the wedge area of the less than that worm gear that do not wear and tear, and cannot adjust sideshake after causing worm gear abrasion.
2) owing to being subject to the impact of load, it is impossible to ensure that uniformly, therefore after abrasion, side gap adjustable, plane enveloped torus worm-drive can lose original precision in the abrasion of the worm gear flank of tooth,
Patent 99117383.X only proposes a kind of adjustable Property of Plane-enveloped Worm Transmission of adjacent teeth side clearance, does not suggest that the original precision how keeping Property of Plane-enveloped Worm Transmission.
As can be seen here, above-mentioned existing Property of Plane-enveloped Worm Transmission is in product structure, method and use, it is clear that has still suffered from inconvenience and defect, and has urgently been further improved.In view of this, the design people is based on being engaged in practical experience and the Professional knowledge that this type of product design manufacture is enriched for many years, and coordinate the utilization of scientific principle, actively in addition research and innovation, to the Property of Plane-enveloped Worm Transmission of precision can be kept after founding a kind of new worm gear teeth abrasion, general existing Property of Plane-enveloped Worm Transmission can be improved so that it is have more practicality.Through constantly research, design, and after repeatedly studying sample and improving, finally create the present invention having practical value.
Summary of the invention
It is an object of the invention to, overcome the defect that existing Property of Plane-enveloped Worm Transmission exists, and the Property of Plane-enveloped Worm Transmission of precision after a kind of new worm gear teeth abrasion is provided, can be kept, to be solved technical problem is that makes it after the wheel odontotripsis of worm gear, by mobile worm screw to worm gear teeth not with the region of worm screw contact wear, can when keeping precision and the sideshake of worm gear and worm engaging, extend the service life of Property of Plane-enveloped Worm Transmission, be very suitable for practicality.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to the Property of Plane-enveloped Worm Transmission that can keep precision after a kind of worm gear teeth abrasion that the present invention proposes, including worm gear and worm screw, the teeth portion of described worm gear is made up of along the axis direction of described worm gear or the gear teeth consistent along the tooth length direction profile of tooth of described worm gear teeth that process along the rectilinear direction feeding angled with the axis of described worm gear cutter or emery wheel, the tooth top of wherein said worm gear is the face of cylinder, two lateral tooth flanks of described worm gear teeth are plane, and two lateral tooth flanks of described worm gear teeth are equal relative to the inclination angle of the axis of described worm gear；Described worm screw engages with described worm gear, and can move along the axis of described worm gear, when described worm screw is moved along the axis of described worm gear and to engage with described worm gear to different positions, the flank of tooth of described worm screw both sides is all respectively using the corresponding lateral tooth flank of described worm gear teeth as generatrix, makes, by the meshing relation of described worm gear Yu described worm screw, the enveloping surface that generating motion is formed.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
The Property of Plane-enveloped Worm Transmission of precision can be kept after the abrasion of aforesaid worm gear teeth, wherein said worm screw is the situation of the contact wire distribution engaged with described worm gear according to described worm screw, it is determined that the initial position of described worm screw and after described worm gear weares and teares described worm screw move along the direction that the axis of described worm gear moves and distance along the axis of described worm gear.
The Property of Plane-enveloped Worm Transmission of precision can be kept after the abrasion of aforesaid worm gear teeth, wherein when described cutter or emery wheel process the described gear teeth along the rectilinear direction feeding angled with the axis of described worm gear, the axis angulation of the direction of feed of described cutter or emery wheel and described worm gear is more than 0 degree and less than 90 degree.
The present invention compared with prior art has clear advantage and beneficial effect.By technique scheme, the Property of Plane-enveloped Worm Transmission of precision can be kept at least to have following advantages and beneficial effect after worm gear teeth of the present invention abrasion: the present invention characteristic distributions according to contact wire, adopt mobile worm screw to worm gear teeth not with the region of worm screw contact wear, when not affecting its contact performance, extend the service life of Property of Plane-enveloped Worm Transmission.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, and can be practiced according to the content of description, and in order to the above and other purpose of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Accompanying drawing explanation
Figure 1A to Fig. 1 D the is worm gear teeth teeth directional scattergram of the contact wire of worm and wheel when being different angles with the axis of worm gear.
Fig. 2 is the scattergram that the worm screw of the present invention moves the contact wire of front and back worm and wheel along the axis of worm gear.
The schematic diagram in the direction of tool feeding when Fig. 3 A to Fig. 3 B is the worm gear of the processing present invention.
Fig. 4 is two lateral tooth flanks schematic diagram relative to the inclination angle of the axis of worm gear of worm gear teeth of the present invention.
Fig. 5 is the schematic diagram of the position of the worm and wheel engagement of the present invention before and after abrasion.
Detailed description of the invention
For further setting forth that the present invention reaches technological means and effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, its detailed description of the invention of Property of Plane-enveloped Worm Transmission of precision, structure, step, feature and effect thereof can be kept to after the worm gear teeth abrasion proposed according to the present invention, describe in detail as after.
For the present invention aforementioned and other technology contents, feature and effect, can clearly appear from following cooperation is with reference to the detailed description of graphic preferred embodiment.By the explanation of detailed description of the invention, it should can be reach technological means that predetermined purpose takes and effect obtains one more deeply and concrete understanding to the present invention, however institute's accompanying drawings be only to provide with reference to and purposes of discussion, be not used for the present invention is any limitation as.
Whether known Property of Plane-enveloped Worm Transmission is parallel with the axis of worm gear according to worm gear teeth teeth directional, it is divided into straight-tooth and two kinds of forms of helical teeth, as shown in Figure 1A to Fig. 1 D, Figure 1A to Fig. 1 D the is worm gear teeth teeth directional scattergram of the contact wire of worm and wheel when being different angles with the axis of worm gear.Be can be seen that by the distribution of contact wire in figure, no matter it is straight-tooth (β=0 °) or helical teeth (β ≠ 0 °), the gear teeth of worm gear have the flank of tooth of half to be not in contact with line (being called not in contact with region), namely the gear teeth of worm gear have the flank of tooth of half do not contact with worm screw and engage, and the flank of tooth of this half does not have any abrasion.
Refer to shown in Fig. 2, be the worm screw of the present invention scattergram that moves the contact wire of front and back worm and wheel along the axis of worm gear.Can keep the Property of Plane-enveloped Worm Transmission of precision after worm gear teeth of the present invention abrasion is the scattergram of the contact wire according to worm and wheel engagement, worm screw is enable axially to do corresponding movement along worm gear, so that the contact wire of the worm and wheel engagement after mobile be distributed in the worm gear teeth flank of tooth not in contact with region, to be kept by mobile worm screw initial precision and the sideshake of worm and wheel engagement after worm gear teeth weares and teares.
Refer to shown in Fig. 3 A to Fig. 3 B and Fig. 4, the schematic diagram in the direction of tool feeding when Fig. 3 A to Fig. 3 B is the worm gear of the processing present invention.Fig. 4 is two lateral tooth flanks schematic diagram relative to the inclination angle of the axis of worm gear of worm gear teeth of the present invention.The Property of Plane-enveloped Worm Transmission of precision can be kept to include worm gear 1 and worm screw 2 after worm gear teeth of the present invention abrasion.Wherein the teeth portion of worm gear 1 gear teeth consistent along the tooth length direction profile of tooth of worm gear 1 gear teeth that the axis direction (β=0 °) along worm gear 1 or the rectilinear direction feeding along angled with the axis of worm gear 1 (β ≠ 0 °) process by cutter or emery wheel form, so, after worm gear 1 weares and teares, it is to ensure that when worm screw 2 moves to new position, engagement when their engagement is with initial position is the same, thus maintaining the precision before abrasion and sideshake.When cutter or emery wheel process the gear teeth along the rectilinear direction feeding angled with the axis of worm gear 1, the axis angulation β of the direction of feed of cutter or emery wheel and worm gear is more than 0 degree and less than 90 degree.The tooth top of the worm gear 1 of the present invention is the face of cylinder, and these are different from the tooth top form of the worm gear of known Property of Plane-enveloped Worm Transmission.The tooth top of the worm gear of known Property of Plane-enveloped Worm Transmission has the throat of an inner ring surface, adding man-hour is adopt cutter or emery wheel radial feed, is circular arc at the bottom of tooth, and this structures shape worm screw cannot moving axially along worm gear.The tooth top of the worm gear 1 of the present invention adopts the face of cylinder identical with the tooth top of ordinary gear, its add man-hour cutter 3 or emery wheel be the axial feed along worm gear 1, processing straight-tooth (as shown in Figure 3A), or the rectilinear direction feeding that edge is angled with the axis of worm gear 1, processing helical teeth (as shown in Figure 3 B), so, worm screw 2 just can being free to move axially along worm gear 1.Two lateral tooth flanks of the gear teeth of the worm gear 1 of the present invention are plane, and two lateral tooth flanks of worm gear 1 gear teeth are equal relative to the inclination angle of the axis of worm gear 1, as shown in Figure 4, and two of which angle of inclination beta1=β2, so, the face of cylinder of the different-diameter from tooth top to tooth root is parallel with the intersection of the gear teeth two lateral tooth flank, and the profile of tooth of the gear teeth namely intercepted by the Different Plane vertical with the axis of worm gear 1 is straight line tooth, and profile of tooth is consistent.
Refer to shown in Fig. 5, be the schematic diagram of the position of the worm and wheel engagement of the present invention before and after abrasion.The worm screw 2 of the present invention engages with worm gear 1, and can move along the axis of worm gear 1, when worm screw 2 is moved along the axis of worm gear 1 and to engage with worm gear 1 to different positions, the flank of tooth of worm screw 2 both sides is all respectively using the corresponding lateral tooth flank of worm gear 1 gear teeth as generatrix, makes, by the meshing relation of worm gear 1 with worm screw 2, the enveloping surface that generating motion is formed.Namely, when the flank of tooth of machining worm 2, when being and adopt with machining worm wheel 1, there is identical inclination angle (β1=β2) plane.As it is shown in figure 5, the initial position of worm screw 2 when wherein a is initially install, b be after abrasion worm screw 2 move along the axis of worm gear 1 after position.The worm screw 2 of the present invention contacts engagement at initial position with worm gear 1, when through after a period of time, the wheel odontotripsis of worm gear 1, do not contact with the region of worm screw 2 contact wear to worm gear 1 engage by the worm screw 2 that moves axially along worm gear 1, it is possible to extend the service life of Property of Plane-enveloped Worm Transmission when keeping initial precision and sideshake.Wherein the worm screw 2 of the present invention is the situation of the contact wire distribution engaged with worm gear 1 according to worm screw 2, determine worm screw 2 initial position and after worm gear 1 weares and teares worm screw 2 along the direction that the axis of worm gear 1 moves and distance.
The present invention is according to concrete use condition, it is possible to suitably changes β angle and makes to touch the changes in distribution of line or suitable thickening worm gear 1, such that it is able to make its contact performance of the maintenance not in contact with regional sustained that worm screw moves on worm gear 1 for more than 2 time.Therefore, it is at least keeping the twice in the life-span of the Property of Plane-enveloped Worm Transmission of original precision and sideshake the service life of the present invention.
The above, it it is only presently preferred embodiments of the present invention, not the present invention is done any pro forma restriction, although the present invention is disclosed above with preferred embodiment, but it is not limited to the present invention, any those skilled in the art, without departing within the scope of technical solution of the present invention, when method and the technology contents of available the disclosure above make a little Equivalent embodiments changing or being modified to equivalent variations, in every case it is the content without departing from technical solution of the present invention, according to any simple modification that above example is made by the technical spirit of the present invention, equivalent variations and modification, all still fall within the scope of technical solution of the present invention.
Claims (2)
1. the Property of Plane-enveloped Worm Transmission of precision after a worm gear teeth abrasion, can be kept, including worm gear and worm screw, it is characterized in that: the teeth portion of described worm gear or is made up of along the axis direction of described worm gear along the gear teeth consistent along the tooth length direction profile of tooth of described worm gear teeth processed with the rectilinear direction feeding that the axis of described worm gear acutangulates cutter or emery wheel, the tooth top of wherein said worm gear is the face of cylinder, two lateral tooth flanks of described worm gear teeth are plane, and two lateral tooth flanks of described worm gear teeth are equal relative to the inclination angle of the axis of described worm gear；Described worm screw engages with described worm gear, and can move along the axis of described worm gear, when described worm screw is moved along the axis of described worm gear and to engage with described worm gear to different positions, the flank of tooth of described worm screw both sides is all respectively using the corresponding lateral tooth flank of described worm gear teeth as generatrix, makes, by the meshing relation of described worm gear Yu described worm screw, the enveloping surface that generating motion is formed.
2. the Property of Plane-enveloped Worm Transmission of precision after worm gear teeth according to claim 1 abrasion, can be kept, it is characterized in that wherein said worm screw is the situation of the contact wire distribution engaged with described worm gear according to described worm screw, it is determined that the initial position of described worm screw and after described worm gear weares and teares described worm screw move along the direction that the axis of described worm gear moves and distance along the axis of described worm gear.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310026371.2A CN103883679B (en) | 2013-01-24 | 2013-01-24 | The Property of Plane-enveloped Worm Transmission of precision can be kept after worm gear teeth abrasion |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310026371.2A CN103883679B (en) | 2013-01-24 | 2013-01-24 | The Property of Plane-enveloped Worm Transmission of precision can be kept after worm gear teeth abrasion |
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| Publication Number | Publication Date |
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| CN103883679A CN103883679A (en) | 2014-06-25 |
| CN103883679B true CN103883679B (en) | 2016-07-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536218B (en) * | 2020-05-15 | 2023-03-24 | 重庆大学 | Point-line evolvable enveloping worm transmission pair and working mode thereof |
| CN115929872B (en) * | 2022-12-30 | 2023-10-20 | 江苏鑫和利精工有限公司 | Wear-resistant worm wheel and processing technology thereof |
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| CN1248504A (en) * | 1999-07-26 | 2000-03-29 | 张光辉 | Approximate grinding method for planer enveloping worm |
| CN1257974A (en) * | 1999-11-24 | 2000-06-28 | 张光辉 | Side gap adjustable, plane enveloped torus worm drive |
| CN101745703A (en) * | 2009-12-22 | 2010-06-23 | 武汉科技大学 | Angle-modified dual-torus double-enveloping toroidal worm pair and manufacturing method thereof |
| CN203082166U (en) * | 2013-01-23 | 2013-07-24 | 洛阳凯环精密机械有限公司 | Planar enveloping ring surface worm drive capable of keeping accuracy after abrasion of gear teeth of worm gear |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6523430B1 (en) * | 1999-10-15 | 2003-02-25 | New Venture Gear, Inc. | Power take-off unit with gearset |
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2013
- 2013-01-24 CN CN201310026371.2A patent/CN103883679B/en active Active
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|---|---|---|---|---|
| CN1248504A (en) * | 1999-07-26 | 2000-03-29 | 张光辉 | Approximate grinding method for planer enveloping worm |
| CN1257974A (en) * | 1999-11-24 | 2000-06-28 | 张光辉 | Side gap adjustable, plane enveloped torus worm drive |
| CN101745703A (en) * | 2009-12-22 | 2010-06-23 | 武汉科技大学 | Angle-modified dual-torus double-enveloping toroidal worm pair and manufacturing method thereof |
| CN203082166U (en) * | 2013-01-23 | 2013-07-24 | 洛阳凯环精密机械有限公司 | Planar enveloping ring surface worm drive capable of keeping accuracy after abrasion of gear teeth of worm gear |
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Effective date of registration: 20170329 Address after: Hsinchu Songshan Lake high tech Industrial Development Zone of Dongguan City, Guangdong province 523000 new No. 4 unit 1 building 17 Guangdong B area 3 Building Room 309 Patentee after: Nami Intelligent Technology (Dongguan) Co., Ltd. Address before: 471000 Luoyang high tech Zone, Henan Road, No. 6 spring Patentee before: LUOYANG KAIHUAN PRECISION MACHINERY CO., LTD. |
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