CN100564949C - Power transmitting deice and manufacture method thereof - Google Patents
Power transmitting deice and manufacture method thereof Download PDFInfo
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- CN100564949C CN100564949C CN 200680003563 CN200680003563A CN100564949C CN 100564949 C CN100564949 C CN 100564949C CN 200680003563 CN200680003563 CN 200680003563 CN 200680003563 A CN200680003563 A CN 200680003563A CN 100564949 C CN100564949 C CN 100564949C
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000003754 machining Methods 0.000 claims abstract description 22
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- 238000010791 quenching Methods 0.000 claims description 19
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- 230000015572 biosynthetic process Effects 0.000 claims description 2
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- 238000012545 processing Methods 0.000 description 13
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- 238000003199 nucleic acid amplification method Methods 0.000 description 2
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- 230000001629 suppression Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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Abstract
The present invention relates to a kind of power transmitting deice and manufacture method thereof, this power transmitting deice can be suppressed in the distortion that adds man-hour.Spiral gear (10) as rotary component has the dish portion (12) that extends radially outwardly from hub portion (11), and this dish portion (12) is provided with the through hole (122) as the slit-shaped apertures portion that forms by laser beam machining.
Description
Technical field
The present invention relates to a kind of power transmitting deice and manufacture method thereof.More specifically, the present invention relates to a kind of power transmitting deice and manufacture method thereof that is installed on the vehicle.
Background technique
A kind of traditional power transmitting deice is for example open in Japanese Patent Application No.2001-116115.
Summary of the invention
Above-mentioned conventional art discloses a kind of gearing that is combined at first gear that upwards can be shifted relatively in week and second gear that has, wherein be provided with integratedly and follow first gear to bear the flexing arm of resiliently deformable with second gear in the relative displacement that makes progress in week, this flexing arm extends laterally from the hub portion of second gear diametrically.
The known metal gear passes through the manufacturing step of forging, punching press, flank of tooth processing, quenching and tempering usually successively in the fabrication stage.Under the situation that adopts above-mentioned arm, carried out before quenching if form the step of arm, then the distortion in the quenching process will alter a great deal.If this step is carried out after quenching, the additional step that need on crust, process after then quenching.The problem that has processing difficulties.
In view of the above problems, the purpose of this invention is to provide a kind of power transmitting deice, it can prevent noise, and can suppress to add the distortion in man-hour.
Power transmitting deice of the present invention is a kind of via the power transmitting deice of the rotary component transmission of rotating around predetermined axle center from the power of power source.This rotary component comprises the dish portion that extends radially outwardly from hub portion.In this dish portion, be provided with the slit-shaped apertures portion that gets out by laser beam machining.
Gou Zao power transmitting deice has the slit-shaped apertures portion that gets out by laser beam machining as mentioned above.Thereby, a kind of power transmitting deice that can suppress to add the distortion in man-hour and can prevent noise or vibration can be provided.
Preferably, this rotary component is a gear.
Preferably, this power transmitting deice is the speed changer that is arranged in the vehicle, and this rotary component is the rotary component that is arranged in the speed changer.
Preferably, this slit-shaped apertures portion is a C shape.The first step of this slit-shaped apertures portion by forming through hole at an end of slit, form second step of through hole and the center region of the through hole that will form at first step constitutes as the center region of the starting point and the through hole that will form in second step third step as terminal point formation slit at the other end of slit.
Manufacture method according to power transmitting deice of the present invention is via the manufacture method of rotary component transmission from the power transmitting deice of the power of power source, and this rotary component comprises the dish portion that extends radially outwardly from hub portion.This manufacture method comprises the step of the rotary component that quenches at least and get out the step of slit-shaped apertures portion by laser beam machining in dish portion after quenching.
In the manufacture method of the power transmitting deice of constructing as mentioned above,, can be suppressed so add the distortion in man-hour owing to after quenching, get out slit-shaped apertures portion in dish portion by laser beam machining.
According to the present invention, can provide a kind of and can suppress to add the distortion in man-hour and can prevent to produce the power transmitting deice of noise and/or vibration.
Description of drawings
Fig. 1 is the front view according to the spiral gear of first embodiment of the invention.
Fig. 2 is the sectional view that the II-II line in Fig. 1 is done.
Fig. 3 is the view that explanation reduces the principle of noise that spiral gear produces.
Fig. 4 is the front view according to the spiral gear of second embodiment of the invention.
Fig. 5 is the block diagram of expression Gear Processing step.
Fig. 6 is the front view with spiral gear of non-slit-shaped apertures portion 322.
Fig. 7 is the front view with spiral gear of slit-shaped through hole 122.
Fig. 8 is the frequency of each example of expression and the plotted curve that always concerns between the acoustic pressure.
Fig. 9 is the front view according to the spiral gear of third embodiment of the invention.
Figure 10 is the amplification front elevation of the cutting residual part among Fig. 9.
Figure 11 is the sectional view according to the power transmitting deice of fourth embodiment of the invention.
Figure 12 is the front view from the planetary carrier of being observed by direction shown in the arrow XII of Figure 11.
Figure 13 is the plan view according to the spiral gear of fifth embodiment of the invention.
Figure 14 is the block diagram of the manufacturing step of through hole shown in Figure 13.
Figure 15 is the plan view according to the spiral gear of a comparative example.
Embodiment
Embodiments of the invention are described below with reference to accompanying drawings.In the following embodiments, identical or corresponding element is marked by identical reference character, and its explanation also no longer repeats.
(first embodiment)
Fig. 1 is the front view according to the spiral gear of first embodiment of the invention, and Fig. 2 is the sectional view that the II-II line in Fig. 1 is done.
As illustrated in fig. 1 and 2, the spiral gear 10 according to first embodiment of the invention comprises hub portion 11, dish portion 12 and edge portion 13.Hub portion 11 forms the cylindrical configuration that has through hole 111 at the center.One running shaft inserts in the through hole 111 so that hub portion is attached on the running shaft.Dish portion 12 is arranged in the footpath of running shaft upwards from hub portion 11 outward extending thin parts.Edge portion 13 is positioned on the peripheral edge of dish portion 12.The outer circumferential face of edge portion 13 has tooth, forms the flank of tooth 131.
As shown in Figure 1, in the spiral gear 10 according to first embodiment of the invention, joint 121 is set to less than through hole 122 in the length L 2 that makes progress in the week of running shaft in the length L 1 that makes progress in the week of running shaft.Week at running shaft upwards is provided with three through holes 122 evenly and at intervals in spiral gear 10 of the present invention as mentioned above, and each through hole 122 is identical in the length L 2 that makes progress in the week of running shaft for all through holes.And joint 121 is also identical in the length L 1 that makes progress in the week of running shaft.
Fig. 3 is the view that explanation reduces the principle of noise that spiral gear produces.With reference to this figure the mechanism that noise produces is described.
With reference to Fig. 3, consider the situation of running shaft 20 along the rotation of direction shown in the arrow A.The tooth of set tooth and another spiral gear is when some B engagement on the outer circumferential face of edge portion 13 in the spiral gear 10 on being fitted to running shaft 20, and engaging force is applied on the spiral gear 10 at this B.As shown in Figure 3, this engaging force is broken down into three component on the direction, that is, and and tangential component, radial component and axial thrust load.Engagement when being engaged with each other with spur wheel is compared, and difference is also to be applied with in the axial direction engaging force.
Set through hole 122 is used to prevent to decompose to three engaging forces on the direction and is passed to hub portion 11 via dish portion 12 in the dish portion 12 of spiral gear 10.In other words,, reduced dish portion 12, the rigidity on promptly tangential, radial and axial in three directions owing to be provided with through hole 122 in the dish portion 12.Therefore, joint 121 bending by resiliently deformable is to relax the transfer of vibration that is produced on the flank of tooth 131.Thereby generation of vibration and transmission can be suppressed effectively.As a result, can reduce generating noise.
Especially, by joint 121 is set at less than through hole 122 in the length L 2 that makes progress in the week of running shaft in the length L 1 that makes progress in the week of running shaft, joint 121 rigidity in the axial direction can reduce effectively.The axial thrust load ratio that is passed to the engaging force of hub portion 11 reduces, to suppress generation of vibration and transmission.Thereby generating noise is significantly reduced.
Because three through holes 122 upwards roughly were provided with evenly and at intervals in the week of running shaft, excessive resiliently deformable upwards will can not take place in the week of running shaft.Thereby eigentone will be not easy to be energized, and allow to suppress vibration and generating noise.
In sum, first embodiment's spiral gear 10 is used as around the rotary component of predetermined axle center rotation, and transmits via this spiral gear from the power of power source.Spiral gear 10 comprises the dish portion 12 that extends radially outwardly from hub portion 11.Dish portion 12 is provided with the slit-shaped through hole 122 that gets out by laser beam machining.
Have the through hole 122 that forms by laser beam machining because the helical tooth of above-mentioned structure swings 10, compare by the situation that the method beyond the laser beam machining forms with through hole, the distortion that adds man-hour can be suppressed.
(second embodiment)
Fig. 4 is the front view according to the spiral gear of second embodiment of the invention.Be that according to the spiral gear of second embodiment of the invention and difference the outer circumferential face of hub portion 11 is provided with a plurality of through holes 123 according to first embodiment's spiral gear.(compliance, compliance) to reduce the structure of noise, second embodiment's spiral gear 10 is being provided with slit-shaped through hole 122 by laser beam machining after the quenching in dish portion 12 based on the flexibility that changes gear.Power transmission mechanism by the gear engagement transferring power will cause because the power of enforcement that is produced by engagement produces the noise of bothering with the transmission of vibration mode.Though the power of enforcement in order to reduce to be produced by engagement is adjusted to several microns the order of magnitude with the precision of the flank of tooth usually, be difficult to realize strict adjusting, carry out unless and then flank of tooth processing quench.This has difficulties at manufacture view.
Notice that the present invention is provided with slit-shaped through hole 122 in dish portion 12.By change the dynamic rate of spiral gears 10 by means of through hole 122, the flexibility of spiral gear 10 (frequency response of displacement) can change itself, with the noise that allows to reduce to be caused by engagement.
This through hole 122 forms by the laser beam machining after the quenching step.If the hole forms before the quenching step, then the shape in hole will become complicated, can increase the variation of deflection in quenching process.The problem that this causes tooth accuracy to reduce.Processing after the use of laser beam machining allows to quench has suppressed the reduction of tooth accuracy.
Slit-shaped can produce by scanning laser beam.Owing to can only realize any slit-shaped, so degrees of freedom is higher by the scanning that changes laser beam.Can realize the optimum shape of each gear.In addition, by the position of correct selection groove, can reduce vibration in the mode identical with forming slotted hole.Thereby, compare with the situation that obtains hole shape, can shorten the required time of processing.
Fig. 5 is the block diagram of Gear Processing step.At first, plain carbon steel is forged (step S1).
Then, carrying out punching press (step S2), flank of tooth processing (step S3) and quenching (step S4), is laser beam machining (step S5) then.By laser beam machining, get out through hole 122.After laser beam machining is finished, carry out the back processing (step S6) of quenching.
According to the manufacture method of the power transmitting deice of second embodiment of the invention is a kind ofly to transmit manufacture method from the power transmitting deice of the power of power source via spiral gear 10, and this spiral gear 10 comprises the dish portion 12 that extends radially outwardly from hub portion 11.This manufacture method may further comprise the steps: spiral gear 10 at least quenches; In dish portion 12, getting out slit-shaped through hole 122 by laser beam machining after the quenching; And processing after forming through hole 122 backs on spiral gear 10, to carry out quenching.
To illustrate below and reduce the spiral gear anti noise according to the present invention.Preparation has according to the spiral gear of slit-shaped through hole 122 of the present invention, the spiral gear that has the spiral gear of non-slit-shaped through hole and do not have through hole.Fig. 6 is the front view with spiral gear of non-slit-shaped through hole 322, and Fig. 7 is the front view with spiral gear of slit-shaped through hole 122.The size of these spiral gears is basic identical with the size of the spiral gear of no through hole, and difference is through hole 122 width diametrically.The slit-shaped through hole has the width of only realizing by laser scanning, and is consistent with the through hole 122 that gets out by laser beam machining.In the present embodiment, non-slit-shaped through hole 322 and slit-shaped through hole 122 are diametrically apart from the planar central 52mm of spiral gear 10.
Based on these three kinds of spiral gears, check the noise generation level under the various frequencies.The result as shown in Figure 8.In Fig. 8, the relation between frequency and the total acoustic pressure is represented by solid line 301 for the spiral gear of no through hole, is represented by dotted line 302 for the spiral gear of Fig. 7, and is represented by double dot dash line 303 for spiral gear of the present invention as shown in Figure 6.As can be seen from Figure 8, be lower than total acoustic pressure according to total acoustic pressure (double dot dash line 303) of spiral gear of the present invention corresponding to the spiral gear of solid line 301.It can also be seen that spiral gear of the present invention shows and reduces effect corresponding to the equal noise of the example with hole of dotted line 302.
(the 3rd embodiment)
Fig. 9 is the front view according to the spiral gear of third embodiment of the invention.With reference to Fig. 9, be that according to the difference of the spiral gear 10 of third embodiment of the invention and first embodiment's spiral gear through hole 122 is C shape.Through hole 122 forms has the structure of permission with a stroke closed interior zone 125.Inner region 125 links to each other by cutting residual part 126 with the perimeter.Though cutting residual part 126 is arranged on the outer circumferential side of inner region 125, all sides in cutting residual part 126 also can be arranged on.In addition, the cutting residual part also can be arranged on the end that makes progress in week.
In addition, though be provided with three cutting residual parts 126 in the 3rd embodiment, the quantity of cutting residual part is not limited thereto.One or more cutting residual parts 126 can be set.
In addition, each inner region 125 is not limited to symmetric shape, and the asymmetric inner region 125 of a plurality of shapes can be set.
Especially, in dish portion 12, damper structure is set, as the flexibility that changes spiral gear with reduce the structure of noise by the effectiveness in vibration suppression that damper causes by the laser beam machining after quenching.The inner region 125 of damper structure has the natural frequency that is different from spiral gear 10 bodies, to play the effect of vibration of decay spiral gear 10.
Figure 10 is the amplification front elevation of the cutting residual part among Fig. 9.With reference to Figure 10, cutting residual part 126 is the borderline regions between inner region 125 and the perimeter, has the strength level that allows inner region 125 independent vibrations.In other words, if cutting residual part 126 increases at the width that makes progress in week, then inner region 125 will firmly be connected with other zone, make the damper effect that is produced by inner region 125 to realize.In addition, if cutting residual part 126 is too small, the intensity of then cutting residual part 126 causes the possibility that inner region 125 comes off with deficiency.
In the present embodiment, effectiveness in vibration suppression can realize by connecting the damper that causes by inner region via the cutting residual part, add the effect that gets out complete through hole 122 (changing the flexibility of gear).
(the 4th embodiment)
Figure 11 is the sectional view according to the power transmitting deice of fourth embodiment of the invention.With reference to Figure 11, comprise the power transfer assembly that is contained in transaxle case 201, variable speed drives axle housing 202 and the transaxle bonnet 203 as automatic transmission 200 according to the power transmitting deice of fourth embodiment of the invention.In transaxle case 201, accommodate input shaft 205.Input shaft 205 has from the next power of torque-converters transmission, so that this power is transmitted to automatic transmission 200.In variable speed drives axle housing 202, accommodate train of gearings.For example, planetary pinion 212 and sun gear 213 and gear ring 214 engagements.Planetary pinion 212, sun gear 213 and gear ring 214 constitute planetary gear set.
In variable speed drives axle housing 202, accommodate oppositely (counter) actuation gear 206.Reverse direction actuation gear 206 and oppositely driven gear 207 engagements.The power that is passed to reverse driven gear 207 offers differential driving pinion 208.Differential driving pinion 208 meshes with the gear ring 209 of differential mechanism.
In automatic transmission shown in Figure 11 200, vibration passes to housing or live axle shown in arrow 501-506.In order to cut off this vibration transfer, the slit-shaped through hole shown in first to the 3rd embodiment is set.For example, by in reverse direction actuation gear 206, forming through hole, can be suppressed significantly by the vibration transfer on the direction shown in the arrow 502.In addition, by oppositely forming through hole in the driven gear 207, can be suppressed significantly by the vibration transfer on the direction shown in arrow 503 and 504.
In addition, by in gear ring 209, forming through hole, can be suppressed significantly by the vibration transfer on the direction shown in arrow 505 and 506.
In addition, by in planetary carrier 211, forming the slit-shaped through hole, can be suppressed significantly by the vibration transfer on the direction shown in the arrow 501.
Figure 12 is the front view from the planetary carrier of being observed by direction shown in the arrow XII Figure 11.With reference to Figure 12, the planetary carrier 211 that constitutes planetary gear set has a plurality of slit-shaped through holes 222.Though through hole 222 upwards is being arranged on three evenly spaced positions in week in the present embodiment, the allocation position and the quantity of through hole 222 are not limited thereto.More or less through hole 222 can be set.
In the 4th embodiment, the slit-shaped through hole is located in the assembly that is configured on the vibration transfer path.By be arranged in by the gear power of enforcement the assembly on the vibrative bang path slit-shaped apertures is set, the vibration characteristics of this assembly can be changed to suppress transfer of vibration.For example, slit-shaped apertures is arranged on the support region, planetary carrier etc. of reverse direction actuation gear-bearing.In addition, slit-shaped can be processed into by laser beam focus.Owing to can only realize any slit-shaped, thereby degrees of freedom is higher by the scanning that changes laser beam.Can realize and the corresponding optimal construction in position of living in.In addition, compare, even also can realize slit-shaped for the assembly of limited space system with boring.
In addition, in slit part, can embed can attenuation vibration material.For example, can in the slit part, embed the material such as resin, to realize attenuation energetically with vibration-damping effect.
(the 5th embodiment)
Figure 13 is the plan view according to the spiral gear of fifth embodiment of the invention.With reference to Figure 13, in dish portion 12, be provided with a plurality of through hole 122 as slit-shaped apertures according to the spiral gear 10 of fifth embodiment of the invention.Be formed with the through hole 135 and 136 of circular at the two end part of through hole 122.Each through hole 135 and 136 has equal inside diameters R1.The radial length that slit-shaped through hole 122 is positioned at distance center is the zone of R2, and forms arc with through hole 135 and 136.The reason that through hole 135 and 136 are set at the two end part of slit-shaped through hole 122 is, concentrating for fear of stress needs the bight to have to a certain degree radius.Though through hole 135 and 136 are set on the two end part of through hole 122 in the present embodiment, also can other through hole be set at the middle part of through hole 122 except that two end part.
The manufacture method of through hole in the spiral gear will be described shown in Figure 13 below.Figure 14 is the block diagram of the manufacturing step of through hole shown in Figure 13.With reference to Figure 14, at first form through hole 135.In this stage, dish portion 12 is carried out laser beam machining, with to a regional perforation, make that the radius of through hole 135 is R1 (step S101).
Then, form another through hole 136 in position away from through hole 135.Dish portion 12 is carried out laser beam machining,, make the radius of through hole 136 be similarly R1 (step S102) with to a regional perforation.
At last, so that through hole 135 and 136 ways of connecting form slit-shaped through hole 122.In the time will forming slit-shaped through hole 122, laser spot is shifted to through hole 136 from through hole 135, forms through hole 122 by laser.Do not need laser is moved around in this stage.The laser beam that focuses on only needs to move once (step S103) from through hole 135 to through hole 136.
The order of step S101 to S103 is arbitrarily.In other words, be not limited to the processing carried out with the order of step S101, S102 and S103 among Figure 14.Among the step S101 to S103 any one can at first or at last be carried out.In other words, except the order shown in Figure 14, processing can be carried out according to the order of step S101, S103 and S102, order according to step S102, S101 and S103 is carried out, order according to step S102, S103 and S101 is carried out, order according to step S103, S101 and S102 is carried out, or carries out according to the order of step S103, S102 and S101.
Figure 15 is the plan view according to the spiral gear of a comparative example.With reference to Figure 15, spiral gear 10 has non-slit-shaped apertures 322.The inner peripheral surface 1221 of non-slit-shaped apertures 322 and outer circumferential face 1222 correspond respectively to radius R 3 and the R2 that differs from one another.322 two end part are provided with through hole 135 and 136 in the hole.Owing to do not have slit-shaped apertures in the spiral gear 10 of this comparative example, radius is the outer circumferential face 1222 of R2 and inner peripheral surface 1221 processing separately that radius is R3, the problem that causes manufacturing step to increase.
In other words, form second step of through hole 136 as manufacture method by the first step that forms through hole 135 in an end of slit, in another end of slit and the center region of the through hole 136 that the center region of the through hole 135 that will form will form as starting point constitutes as the third step of terminal point in second step in first step according to the spiral gear 10 of the 5th embodiment's power transmitting deice.This manufacture method comprises the through hole 135 that forms each interval and 136 step, and forms the step of arcuate slots shape through hole 122 with connecting through hole 135 and 136.The slit-shaped of through hole 122 is not limited to arc, also can be lineal shape.In addition, even when adopting curve form, radius neither be constant.
In another method, can at first form slit-shaped through hole 122, form through hole 135 and 136 at its two end part then.
In addition, can form one of through hole 135 and 136, then form slit-shaped through hole 122, form in through hole 135 and 136 another then.
The embodiment of the invention described above can carry out various modifications.Adopting power transmission mechanism of the present invention to be not limited to automatic transmission, also can be manual transmission, stepless speed variator, differential mechanism, distributing means for power supply or hub unit with deceleration feature.
In addition, the present invention can be applicable to the power transmission mechanism of longitudinal or transverse motor.
Should be appreciated that embodiment disclosed herein is exemplary and nonrestrictive in every respect.Scope of the present invention limits by the clause of claim rather than by above-mentioned explanation, and intention comprises any modification that is in this scope and the implication that is equal to the clause of claim.
Claims (5)
1. power transmitting deice, described power transmitting deice is via the power of rotary component (10) transmission of rotating around predetermined axle center from power source, described rotary component (10) comprises the dish portion (12) that extends radially outwardly from hub portion (11), described dish portion (12) has a plurality of slit-shaped apertures portions (122) that get out by laser beam machining, described slit-shaped apertures portion (122) is a C shape, and the length L 1 of the joint between described a plurality of hole portions (122) is less than the length L 2 of described hole portion.
2. power transmitting deice according to claim 1, wherein said rotary component are gear (10).
3. power transmitting deice according to claim 1, wherein said power transmitting deice are the speed changer (200) that is arranged in the vehicle, and described rotary component is the rotary component (206,207,209,211) that is arranged in the described speed changer.
4. the manufacture method of a power transmitting deice, described power transmitting deice is via the power of rotary component (10) transmission of rotating around predetermined axle center from power source, described rotary component (10) comprises the dish portion (12) that extends radially outwardly from hub portion (11), described dish portion (12) has the slit-shaped apertures portion (122) that gets out by laser beam machining, described slit-shaped apertures portion (122) is a C shape, the slit-shaped apertures portion of described C shape passes through first step, second step and third step and constitute, described first step is the end formation through hole (135) at described slit, described second step is to form through hole (136) at the other end of described slit, and described third step forms slit (122) for the center region of the described through hole that the center region of the described through hole that will form at described first step will form in described second step as starting point as terminal point.
5. the manufacture method of a power transmitting deice, described power transmitting deice is via the power of the rotary component transmission that comprises the dish portion that extends radially outwardly from hub portion from power source, described manufacture method comprises the step (S4) of the rotary component that quenches at least (10) and get out the step (S5) of slit-shaped apertures portion (122) by laser beam machining in described dish portion (12) after quenching.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005051603 | 2005-02-25 | ||
| JP051603/2005 | 2005-02-25 | ||
| JP323730/2005 | 2005-11-08 |
Publications (2)
| Publication Number | Publication Date |
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| CN101111698A CN101111698A (en) | 2008-01-23 |
| CN100564949C true CN100564949C (en) | 2009-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200680003563 Expired - Fee Related CN100564949C (en) | 2005-02-25 | 2006-02-22 | Power transmitting deice and manufacture method thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8826765B2 (en) * | 2011-09-14 | 2014-09-09 | Toyota Jidosha Kabushiki Kaisha | Helical gear and power transmission apparatus |
| DE102015221842A1 (en) * | 2015-11-06 | 2017-05-11 | Volkswagen Aktiengesellschaft | Method for producing a gear shaft |
| CN107191543A (en) * | 2017-07-07 | 2017-09-22 | 苏州工业园区凯艺精密科技有限公司 | Structural formula flexible gear reducing transmission structure |
| CN112594351A (en) * | 2020-12-02 | 2021-04-02 | 陕西航天时代导航设备有限公司 | Fan-shaped gear backlash adjusts structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2083217U (en) * | 1990-12-25 | 1991-08-21 | 中国矿业大学 | Flexible wheel disk gear |
| CN1649742A (en) * | 2002-03-05 | 2005-08-03 | 索尼化学株式会社 | Thermo-sensitive recording medium and printed object |
-
2006
- 2006-02-22 CN CN 200680003563 patent/CN100564949C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2083217U (en) * | 1990-12-25 | 1991-08-21 | 中国矿业大学 | Flexible wheel disk gear |
| CN1649742A (en) * | 2002-03-05 | 2005-08-03 | 索尼化学株式会社 | Thermo-sensitive recording medium and printed object |
Non-Patent Citations (1)
| Title |
|---|
| 2000-288834A 2000.10.17 |
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| CN101111698A (en) | 2008-01-23 |
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