CN101839328A - The making method of speed reducer and speed reducer - Google Patents
The making method of speed reducer and speed reducer Download PDFInfo
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- CN101839328A CN101839328A CN201010135842A CN201010135842A CN101839328A CN 101839328 A CN101839328 A CN 101839328A CN 201010135842 A CN201010135842 A CN 201010135842A CN 201010135842 A CN201010135842 A CN 201010135842A CN 101839328 A CN101839328 A CN 101839328A
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Abstract
The invention provides the making method of a kind of speed reducer and speed reducer, it becomes by the minimizing operation with the gap and reduces the gap easily and really, and keeps the speed reducer whole rigidity than the highland.The 1st shell (32) is bonded with the 2nd shell (34) and the 1st output flange (output shaft) (40) exports flange (42) with the 2nd but one is bonded rotatably, and the 1st input shaft (16) and the 2nd input shaft (18) are being bonded in axial end portion (44A, the 44B) position (zone of X1) more in the inner part than above-mentioned the 1st, the 2nd output flange (40,42) or the 1st, the 2nd shell (32,34) (shell (44)) to bear the state of preload mutually in the opposite direction on sense of rotation.
Description
Technical field
The application advocates the preference based on the Japanese patent application of on March 16th, 2009 application 2009-63481 number.The full content of this application is quoted in this manual by reference.
The present invention relates to the making method of a kind of speed reducer and speed reducer.
Background technique
For example, in the purposes as high-precision burr remover, not only need very close to each otherly in the speed reducer side, can overcome from the counter-force of workpiece side and with correct size deburring suitable " rigidity " but also need with instrument.
In patent documentation 1, disclose, prepare two retarders of the so-called internal-gearing planet gear of employing mechanism, each retarder integral body is used for the speed reducer that forward or reverse ground constitutes.In this speed reducer, link the 1st, the 2nd crank body of the 1st, the 2nd retarder mutually, and the 1st, the 2nd supporting mass or the 1st, the 2nd internal gear of supporting the 1st, the 2nd crank body that interfixes.And at the state (to bear the state of preload) that makes the 1st, the 2nd internal gear or the 1st, the 2nd support relatively to rotate in the opposite direction, the 1st, the 2nd internal gear or the 1st, the 2nd supporting mass interfix.
In patent documentation 2, disclose and utilize coupling that 2 retarders are used for the speed reducer that forward or reverse ground constitutes.In this speed reducer, an input shaft of speed reducer is extended to the outside of this retarder, and link another input shaft of speed reducer with the state of additional initial moment (preload) in the part of this extension.When between 2 input shafts, applying initial moment, an input shaft is fixed into not along with above-mentioned coupling rotation, and another input shaft is rotated with certain torque by torque wrench.And, utilize wedging ring (spannung ring) to be pressed on the position of its rotation to fix 2 input shafts making.The output of motor by after this freely coupling be delivered to synchronously on 2 input shaft of speed reducer.
Patent documentation 1:PCT WO 2008/146748A1 (Fig. 1, paragraph 0014)
Patent documentation 2: Japanese kokai publication hei 8-11079 (Fig. 1 to Fig. 3)
Yet disclosed speed reducer is the structure that applies preload from the outside of the 1st, the 2nd retarder between as each internal gear of shell or the 1st, the 2nd supporting mass as output shaft in above-mentioned patent documentation 1.Thereby the required torque of preload is big, and the movably scope that internal gear and the 1st, the 2nd supporting mass is moved by this preload is narrow.In fact be difficult to thus applying interfix on the basis of preload the 1st, the 2nd internal gear or the 1st, the 2nd supporting mass.
In fact, in patent documentation 1, advocate the gap to be controlled to about 0.3 degree from 0.5 degree by this structure, and reducible gap and little (patent documentation 1, paragraph 0014)
On the other hand, therefore disclosed technology exists the axial length of input shaft to have to elongated and can not keep the undesirable condition of rigidity than the highland owing to make 2 input shaft of speed reducer extend to the position of coupling each other in patent documentation 2.Thus, when applying on the arm of loading from the outside in deburring work etc., input shaft twists easily, the problem that the result exists the machining accuracy of workpiece also to reduce.
Summary of the invention
The present invention makes for solving this problem in the past, and its problem is to become by the minimizing operation with the gap and reduces the gap easily and reliably, and keeps the speed reducer whole rigidity than the highland.
The present invention solves above-mentioned problem by being set as following structure, that is, possess: the 1st retarder with the 1st input shaft, the 1st output shaft and the 1st stationary axle; The 2nd retarder with the 2nd input shaft, the 2nd output shaft and the 2nd stationary axle, above-mentioned the 1st stationary axle and above-mentioned the 2nd stationary axle are bonded and but above-mentioned the 1st output shaft and the 2nd output shaft one are bonded rotatably, and, above-mentioned the 1st input shaft and the 2nd input shaft bear the state of preload in the other direction with mutual on sense of rotation, but are bonded rotatably in the axial end portion position one more in the inner part than above-mentioned the 1st, the 2nd output shaft or the 1st, the 2nd stationary axle.
The the 1st of the 1st, the 2nd retarder the, the 2nd input shaft is bonded in the axial end portion position more in the inner part than above-mentioned the 1st, the 2nd output shaft or the 1st, the 2nd stationary axle with bearing the state of preload in the other direction mutually in the present invention.Because input shaft is applied preload, get final product so this preload is less, and the scope that 2 input shafts can relatively move is also big.And because 2 input shafts are bonded the position more in the inner part at the axial end portion than the 1st, the 2nd output shaft or the 1st, the 2nd stationary axle, therefore structurally be easy to guarantee significantly the external diameter of each input shaft, and very the rigidity of rotary system is kept on the highland.
In addition, when the 1st, the 2nd shell of above-mentioned the 1st, the 2nd retarder was fixed on (the retarder outside) fixing part, the 1st, the 2nd shell became so-called the 1st, the 2nd stationary axle.When the 1st, the 2nd shell rotates when housing rotational delay device (so-called), the 1st, the 2nd shell becomes so-called the 1st, the 2nd output shaft.Under any circumstance the 1st, the 2nd input shaft all is bonded in the axial end portion position more in the inner part than the 1st, the 2nd output shaft or the 1st, the 2nd stationary axle.
The present invention also can adopt binding arranged side by side to use the making method of the speed reducer of the 1st, the 2nd retarder, it is characterized in that, comprising: link operation, the stationary axle that links above-mentioned the 1st, the 2nd retarder respectively each other and output shaft each other; Fixedly operation is fixed this stationary axle that is bonded each other; Application of force operation makes the rotation relatively in the opposite direction each other of above-mentioned the 1st, the 2nd input shaft of speed reducer, and applies predetermined preload; Integrated operation to have applied the state of this preload, links the 1st, the 2nd input shaft of speed reducer each other in the position more in the inner part at the axial end portion than the 1st, the 2nd output shaft or the 1st, the 2nd stationary axle.
The invention effect
According to the present invention, become by minimizing operation and to reduce the gap easily and reliably, and very the speed reducer whole rigidity is kept on the highland the gap.
Description of drawings
Fig. 1 is the sectional drawing of the related speed reducer of an example of expression embodiments of the present invention.
Fig. 2 be from Fig. 1 to looking the side view that the II direction is observed.
Fig. 3 is near the side view the 2nd output flange of looking the observation of III direction from Fig. 1.
Fig. 4 is the sectional drawing of the related speed reducer of an other example of expression embodiments of the present invention.
Fig. 5 is from the sectional drawing to the 2nd input shaft of looking the related mode of execution of V direction observation Fig. 4.
Fig. 6 is the sectional drawing of the related speed reducer of an other example of expression embodiments of the present invention.
Fig. 7 is the sectional drawing of the related speed reducer of an other example of expression embodiments of the present invention.
Among the figure: 12,14 ... 1st, the 2nd retarder, 16,18 ... 1st, the 2nd input shaft, 32,34 ... 1st, the 2nd shell, 40,42 ... 1st, the 2nd output flange (output shaft), 64,66 ... 1st, the 2nd hollow portion, 70 ... connection shaft
Embodiment
Below, at length describe based on the example of accompanying drawing embodiments of the present invention.
Fig. 1 is the sectional drawing of the related speed reducer of an example of expression embodiments of the present invention.Fig. 2 be from Fig. 1 to looking the side view that the II direction is observed, Fig. 3 be from Fig. 1 to looking the side view that the III direction is observed.
This speed reducer 10 is devices of binding arranged side by side the 1st, the 2nd retarder 12,14 that has identical reducing gear respectively.At first the brief configuration from the 1st, the 2nd retarder 12,14 describes.
1st, the 1st, the 2nd input shaft 16,18 of the 2nd retarder 12,14 has 3 the 1st, the 2nd eccentric body 20,22 respectively.The the 1st, the 2nd external gear 24,26 arranged in that the periphery of the 1st, the 2nd eccentric body 20,22 is chimeric respectively.1st, the 2nd external gear 24,26 is engaged in the 1st, the 2nd internal gear 28,30 in the periphery of the 1st, the 2nd eccentric body 20,22 swing rotation.
The shell of this speed reducer 10 (stationary axle) 44 comprises the 1st shell (the 1st stationary axle) 32 (32A, 32B) of the 1st retarder 12; The 2nd shell of the 2nd retarder 14 (the 2nd stationary axle) 34; Be used in the 1st, the 2nd retarder 12,14, be the 1st shell also be the common enclosure 33 of the 2nd shell.The 1st shell 32 and the 2nd shell 34 are linked by bolt 46,48,50 integratedly across the common enclosure 33 of central authorities.In addition, the 2nd stationary axle of the 1st stationary axle of the 1st retarder and the 2nd retarder is as long as become " formation that is linked mutually " on the result in the present invention, about specifically by which type of shape, at which position, (or by incorporate) parts how to cut apart constitute, be not a problem especially.
In the present embodiment, above-mentioned the 1st, the 2nd internal gear 28,30 respectively with the 1st shell 32B, the 2nd shell 34 becoming one.1st, the number of teeth of the 2nd internal gear 28,30 is set for than the number of teeth of the 1st, the 2nd external gear 24,26 and is only Duoed 1.
1st, the 2nd sold inside the country 36,38 runs through (movable fit) the 1st, the 2nd external gear 24,26, and can export the rotation composition of the 1st, the 2nd external gear 24,26 with the the 1st, the 2nd sold inside the country 36,38 incorporate the 1st, the 2nd output flange (the 1st, the 2nd output shaft) 40,42 sides.
The 2nd opposed output flange the 54, the 2nd sold inside the country the 38 and the 2nd output flange (the 2nd output shaft) of the 1st sold inside the country the 36, the 1st output flange (the 1st output shaft) the 40, the 2nd retarder 14 of the 1st retarder 12 but 42 all link rotatably and constitute single output system by bolt 56,58 or by one such as being pressed into.Wherein the 2nd of the 2nd retarder 14 the opposed output flange 54 and the 2nd output flange 42 are respectively by a pair of tapered roller bearing 60,62 supportings.But the 1st output flange 40 of the 1st retarder 12 is not by independently bearing supporting.If this is because with the bearing both sides that support the 1st, the 2nd retarder 12,14 independently respectively, the assembling that the skew (deviation of radial direction) in axle center causes when linking will take place interfere.
The 1st input shaft 16 of the 1st retarder 12 becomes the coaxial hollow shaft that all has the 1st, the 2nd hollow portion 64,66 and passes through connection shaft 70 bindings with the 2nd input shaft 18 of the 2nd retarder 14.
Axial motor side at the 2nd hollow portion 66 of the 2nd input shaft 18 is formed with and the identical profile of tooth of the 1st internal spline 16B of the 1st input shaft 16, the 2nd internal spline 18B of the identical number of teeth (40).As shown in Figure 3, the periphery at the 2nd input shaft 18 also is formed with parallel cutting surface 18C, 18D.Be rotated and apply preload to the 2nd retarder 14 by clamping this cutting surface 18C, 18D.
Be formed with external splines 70B with the both sides of the 1st, the 2nd internal spline 16B, 18B engagement at connection shaft 70.1st, the 2nd input shaft 16,18 is bonded (aftermentioned) by this connection shaft 70 with the state that bears preload.1st, being attached at than the axial end portion position more in the inner part of the 1st, the 2nd output shaft or the 1st, the 2nd stationary axle of the 2nd input shaft 16,18 carried out.Particularly the 1st, in the 22 output shaft and the 1st, the 2nd stationary axle,, linking than axial end portion position more in the inner part though axial end portion is positioned at the position in the more close axial outside.Because axial end portion 42S, the axial end portion 32S of the 1st shell 32 of the 2nd output flange 42 are equivalent to this axial end portion, therefore linking in the present embodiment than its position (in the regional X1) more in the inner part.Thus, can become the 1st, the 2nd input shaft 16,18 all is made of big (the rigidity high) axle of diameter d 1, d2.In addition, connection shaft 70 is by in the embedding of the engaging of stepped part 70C and positioning ring 72 and axially positioning with respect to the 2nd input shaft 18.
In addition, the 1st, the 2nd input shaft 16,18 need interlink with connection shaft 70 applying on the basis of preload, therefore, and in the present embodiment respectively independently with ball bearing 74,76,78,80 supportings the 1st, the 2nd input shaft 16,18.1st, the skew in the axle center of the 2nd input shaft 16,18 (deviation of radial direction) absorbs by the play of this ball bearing 74,76,78,80.Mark 82 is to be set between the 1st, the 2nd input shaft 16,18 among the figure, is used to seal the O shape ring of the oiling agent in the speed reducer 10.
Secondly, carry the explanation of the binding of especially relevant the 1st, the 2nd input shaft 16,18 secretly, the effect of this speed reducer 10 is described.
Linking the 1st, the 2nd input shaft 16,18 will reverse to approximate equality the 1st, the 2nd input shaft 16,18 in the opposite direction by (relatively) and carry out.Reverse by this, the 1st, the 2nd output flange 40,42 becomes the state that stops in the position of load equilibrium.In addition, in the time of for example can't reversing the 1st, the 2nd input shaft 16,18 both sides etc. simultaneously, also can be, relatively the shell 44 of speed reducer 10 is fixed on the basis of the 1st, the 2nd output flange 40,42 (being in particular the 2nd output flange 42 wherein), makes in the 1st, the 2nd input shaft 16,18 any one one by one mutually in opposite spin.Also not assembling of connection shaft 70 this moment in addition.
1st, the reversing of the 2nd input shaft 16,18 (rotation relatively) be by cutting surface 16C, 16D that clamps the 1st input shaft 16 and section 18C, the 18D that clamps the 2nd input shaft 18, reverses the 1st input shaft 16 and the 2nd input shaft 18 mutually in the opposite direction and carry out on sense of rotation.For example then become the 1st retarder 12 and become the state that the gap is filled on positive veer if the 1st input shaft 16 reverses towards positive veer.Equally, reverse towards reverse directions by the 2nd input shaft 18, the 2nd retarder 14 becomes the state that is filled in the reverse directions gap.
The size of preload specifically is set as 15% to 60% size of the quota torque that is equivalent to the 1st, the 2nd retarder 12,14.In the present embodiment as mentioned above, 1st, the size of the number of teeth of the 2nd internal spline 16B, 18B (size of tooth) is set for and can be made in the 1st, the 2nd retarder 12,14 when state just in time very close to each other only reverses the amount of a tooth with the 1st, the 2nd input shaft 16,18, applies the size of about 40% preload of the quota torque of the 1st, the 2nd retarder 12,14.Thus, if during the tooth of at the beginning the 1st, the 2nd internal spline 16B, 18B overlapping small, reverse to the tooth of the 1st, the 2nd internal spline 16B, 18B consistent the 1st time.When the tooth of the 1st, the 2nd internal spline 16B, 18B is just quite overlapping from the beginning on the other hand, reverse to the tooth of the 1st, the 2nd internal spline 16B, 18B consistent the 2nd time.Thus, the preload of 15% to 60% of the quota torque that (need not to use mensuration machine etc. especially) rotation (reversing) with " being less than bidentate " just can apply to be equivalent to the 1st, the 2nd retarder 12,14 size.
Then, under this state, insert connection shaft 70, and make the external splines 70B of this connection shaft 70 be engaged on the 2nd internal spline 18B and the 1st internal spline 16B successively.Embed the axial restraint that positioning ring 72 carries out this connection shaft 70 after inserting connection shaft 70.
During running, for example if by the 1st input shaft 16 when motor is imported the rotation of positive veer, then power is only by being filled the 1st retarder transmission in gap on positive veer.If the 1st input shaft 16 rotate towards positive veer, then make the 1st external gear 24 be driven (swing) particularly Yi Bian and be connected to the 1st internal gear 28 and swing in one side by the 1st eccentric body 20.Very close to each other in should moving.In the present embodiment, because the 1st internal gear 28 is in stationary state, therefore the 1st internal gear 28 is offset towards the direction identical with the rotation of the 1st input shaft 16 gradually with " engaging position " of the 1st external gear 24, and the 1st external gear 24 blows slowly to the direction autobiography opposite with the sense of rotation of the 1st input shaft 16 with respect to the 1st internal gear 28 as a result.At this moment, carry out identical moving by the 2nd input shaft 18, the 2 retarders 14, but can't carry out the transmission of power on opposite direction because therefore the gap is filled with 16 bindings of the 1st input shaft.
On the other hand, if be imported into the 2nd input shaft 18 from the rotation of the reverse directions of motor by the 1st input shaft 16, this order 2 retarders 14 are very close to each other and similarly be driven so, and the 1st retarder 12 only becomes simple driven rotation.
In the present embodiment, owing to bear the preload of 15% to 60% size of the quota torque that is equivalent to the 1st, the 2nd retarder 12,14, when any direction during therefore no matter speed reducer 10 just changes, reverses rotates, although more or less load change can both carry out running very close to each other all the time.And, in the present embodiment, than more in the inner part position of the axial end portion 32S of the 2nd input axial end portion 42S of flange 42 and the 1st shell 32 (than the axial end portion position more in the inner part of the 1st, the 2nd output shaft or the 1st, the 2nd stationary axle: in the regional X1), that is, in fact at interior bonds the 1st, the 2nd input shaft 16,18 of speed reducer 10.Thus, outside diameter d 1, the d2 of the 1st, the 2nd input shaft 16,18 can be more slightly kept, and the rigidity of the 1st, the 2nd retarder 12,14 of the rigidity that comprises the 1st, the 2nd input shaft 16,18 can be kept highly.The result can overcome the extremely strong driving of load as speed reducer 10 integral body.
In addition, when bearing preload, all still become the state that is bearing preload basically no matter begin or stop the rotation.Yet, adopt (rotation of the 1st, the 2nd input shaft 16,18 is not to transmit successively simply) internal-meshing planetary gear construction in the present embodiment.In this structure, when not loading,, but, then can obtain to reduce the effect of preload if bear load even begin to rotate the state that is bearing preload that is still.Though definite mechanism is indeterminate, infer this be because, the external gear that bears load carry out resiliently deformable in the mode that can produce the gap in the place ahead of sense of rotation of itself, therefore the resiliently deformable of the external gear that is caused by preload is cancelled out each other or is eliminated.
In other words, this effect all means and can obtain characteristic what is called " in when starting (when a certain direction begins to rotate) is by the preload state in filling gap reliably; but if begin rotation; then preload reduces and rotation efficiency increases; if stopping load disappearing, then bear preload once more and fill the gap automatically ", extremely good qualitatively in any case.According to experimental verification if external torque be applied to the quota torque, then efficient roughly approaches the efficient of single-piece, the effects of load that is caused by preload exists hardly.
In the above-described embodiment, the 1st, the 2nd input shaft 16,18 all becomes hollow shaft, inserts connection shaft 70 in its 1st, the 2nd hollow portion 64,66, has carried out the fixing of the 1st, the 2nd input shaft 16,18 thus.Yet the method for fixing with the state that applies preload to the 1st, the 2nd input shaft is not limited to the method in the present invention.
An example of other mode of execution of the present invention shown in Fig. 4, Fig. 5.
In the related speed reducer 81 of present embodiment, show hollow shaft, the 2nd input shaft 86 that the 1st input shaft 82 has the 1st hollow portion 84 and be the example of solid shaft.The blocked wall 90 in the end of the 2nd input shaft side of the 1st input shaft 82 stops up.Be formed with a plurality of penetration hole 90A to 90G (in Fig. 4, only illustrating wherein 90A, 90D) at this obstruction wall 90 with same intervals.On the other hand, as shown in Figure 5, on the end face 86 of the 1st input shaft side of the 2nd input shaft 86, be formed with the slightly different bolt hole 86A to 86G of phase place accordingly with this penetration hole 90A to 90G.In this structure, the the 1st, the 2nd input shaft 82,86 is being applied under the state of preload, hollow portion 84 sides from the 1st input shaft 82, via among the penetration hole 90A to 90G any one, in the bolt hole 86A to 86G of the 2nd input shaft 86, be screwed into for example bolt 92,93 in any bolt hole more than 2.Thus, can link the 1st, the 2nd input shaft 82,86 with the state that applies suitable preload to the 1st, the 2nd input shaft 82,86.
Other structure is because identical with the mode of execution of front, and is therefore only identical in the drawings or have the additional identical mark in position of identical function and omitted repeat specification.
An example of expression another other mode of executions of the present invention among Fig. 6.
In the related speed reducer 91 of present embodiment, the 1st input shaft 92 also becomes the hollow shaft with hollow portion 94, and the 2nd input shaft 96 also becomes solid shaft.The blocked wall 100 in the end of the 2nd input shaft side of the 1st input shaft 92 stops up.Yet, in this example, on this obstruction wall 100, be formed with the plane of inclination 100A of circular section.On the other hand, be formed with jut 102 on the end face of the 1st input shaft side of the 2nd input shaft 96.The plane of inclination 102A of jut 102 is corresponding to the 1st input shaft 92 lateral incline 100A.Front end one at jut 102 is fixed with screw division 104.In this structure, screw in from the hollow portion 94 side direction screw divisions 104 of the 1st input shaft 92 and twist the nuts 106 that connect, the plane of inclination 100A of the 1st input shaft 96 sides is firmly rubbed with the plane of inclination 102A of the 2nd input shaft 96 sides be connected.In this structure, preload can be set on the basis of (unlike the mode of execution of front stage by stage or optionally value) continuous arbitrary value, link the 1st, the 2nd input shaft 92,96.Other structures are the same with the mode of execution of front.
In addition, in the mode of execution of Fig. 4 to Fig. 6, having only the 1st input shaft is the hollow shaft that the end is arranged, and that the 2nd input shaft becomes is solid.Yet, the connecting arrangement of the 1st, the 2nd input shaft that the structure of the mode of execution of these Fig. 4 to 6 is related, in time, equally also can adopt even the 2nd input shaft and the 1st input shaft similarly become hollow shaft that the end is arranged (having the hollow shaft that stops up wall in the end of the 1st input shaft side).
One example of another other mode of execution of the present invention has been shown among Fig. 7.
In the related speed reducer 105 of present embodiment, the 1st, the 2nd retarder 130,132 is identical as single-piece.1st, the 2nd input shaft 106,108 both sides become the hollow shaft of the hollow portion 110,112 with simple circular section.By being with 116 to be delivered to the 2nd pulley 118, be delivered to the 1st input shaft 106 that links (only illustrating bolt hole 120) with the 2nd pulley 118 bolts from the power of not shown motor-side again from the 1st pulley (pulley) 114.
In the present embodiment, the binding of the 1st, the 2nd input shaft 106,108 is undertaken by friction connector 122.Friction connector 122 possesses by expanding body 124, expanding body 126 and binder bolt 128 (only illustrating two).The 1st plane of inclination 124A that is possessed the mortar shape of circular section by expanding body 124, expanding body 126 possesses the 2nd plane of inclination 126A corresponding with it.If will be furthered in the axial direction by expanding body 124 and expanding body 126 by binder bolt 128, face 124A, the 126A that tilts just brings into play the chock effect so mutually, thereby enlarged towards the radial direction outside by expanding body 124.Thus, strong extruding force (frictional force) can take place at inner peripheral surface 106A, the 108A of the 1st, the 2nd input shaft 106,108 and between by expanding body 124, can be by being linked the 1st, the 2nd input shaft 106,108 by expanding body 124.Preload can be set in the present embodiment (be not stage or optionally value but) arbitrary value.
In addition, in the present embodiment, for characteristic and further speed reducer 105 whole rigidity that improve of more completely getting all the forward and backward ready, also export flange the 134, the 1st opposed output flanges 136 with 132 the same tapered rollers 138,140 supportings the 1st of the 2nd retarder by special use in the 1st retarder 130 sides.As mentioned above, if use independently each output system of tapered roller bearing 138,140 supportings the 1st, the 2nd retarder 130,132, so because assembling can take place when skew is arranged in manufacturing deviation and axle center interferes, but in the present embodiment, so that the 2nd opposed output flange 142 of the 1st output flange 134 and the 2nd retarder 132 of the 1st retarder 130 links towards the unsteady mode of radial direction by key 144, thereby can absorb the deviation of the radial direction of the 1st, the 2nd retarder 130,132.In addition, in the present embodiment, because oil sealing 146 to 153 is configured in the 1st, the 2nd retarder 130,132 respectively by oneself, even therefore the 1st, the 2nd retarder 130,132 also can use as retarder single-piece independently.
In addition, the binding of the 1st, the 2nd output flange 134,142 may not be that key links.For example can be binding, can obtain identical action effect as long as generally speaking become the radial direction skew that can absorb the 1st, the 2nd output flange 134,142 " float and link " as sliding cross coupling, large diameter spline coupling.
Except the number of the 1st, the 2nd external gear 156,158 or be situations such as two etc., other the structure mode of execution with the front basically is identical.
As above a plurality of examples, generally speaking the 1st input shaft and the 2nd input shaft in the present invention, as long as become the structure that links in axial end portion position more in the inner part, and the concrete structure that is used to link is not particularly limited than the 1st, the 2nd output shaft or the 1st, the 2nd stationary axle.For example, can be not in the inside of hollow shaft and fix at outer circumferential side.
And, structure about reducing gear, if adopt the internal-gearing planet gear structure of institute's example, then can obtain what is called and can take into account the effect of the raising of the minimizing in gap and efficient well, but in the present invention, structure for reducing gear is not limited in this gear configurations, when adopting the reducing gear of suitable structure, also can obtain the high and speed reducer very close to each other of rigidity.Output shaft for example, can adopt reducing gear, even and input, may not be that coaxial reducing gear (for example parallel-axes gears slowing-down structure) also can adopt the present invention as simple planetary mechanism.In addition, in the above-described embodiment, example fix (becoming the 1st, the 2nd stationary axle) reducing gear of the 1st, the 2nd shell, but the 1st, the 2nd stationary axle of the present invention may not be the 1st, the 2nd shell.For example adopt the specific features (for example the 2nd output flange 42) fix the 1st, the 2nd retarder and constitute the 1st, the 2nd stationary axle, and 1st, the 2nd shell rotation and when constituting the revolving reducing gear of the so-called housing of the 1st, the 2nd output shaft, also can use the present invention and obtain identical action effect.
Claims (10)
1. speed reducer is characterized in that possessing:
Have the 1st input shaft, the 1st output shaft and the 1st stationary axle the 1st retarder and
The 2nd retarder with the 2nd input shaft, the 2nd output shaft and the 2nd stationary axle,
Above-mentioned the 1st stationary axle and the 2nd stationary axle are bonded, but and above-mentioned the 1st output shaft and the 2nd output shaft one be bonded rotatably, and
Above-mentioned the 1st input shaft and the 2nd input shaft to be bearing the state of preload in the opposite direction mutually on sense of rotation, but be bonded rotatably in the axial end portion position one more in the inner part than above-mentioned the 1st, the 2nd output shaft or the 1st, the 2nd stationary axle.
2. speed reducer as claimed in claim 1 is characterized in that,
At least one becomes the hollow shaft with hollow portion in above-mentioned the 1st input shaft and the 2nd input shaft, and above-mentioned the 1st input shaft and the 2nd input shaft are bonded in the inside of this hollow portion with the state that bears preload.
3. speed reducer as claimed in claim 2 is characterized in that,
Above-mentioned hollow shaft stops up and stops up the penetration hole that forms on wall more than 2 at this in the blocked wall in the end of another input shaft side,
On the end face of hollow shaft side, form the phase place different many group bolt hole corresponding at above-mentioned another input shaft with this penetration hole,
In any one group of bolt hole in many groups bolt hole of above-mentioned another input shaft, be screwed into bolt from the hollow portion of above-mentioned hollow shaft via above-mentioned penetration hole, and above-mentioned the 1st, the 2nd input shaft is bonded with the state that bears preload.
4. speed reducer as claimed in claim 2 is characterized in that,
Above-mentioned hollow shaft stops up and stops up the 1st plane of inclination that forms the section circle on wall at this in the blocked wall in the end of another input shaft side,
On the end face of hollow shaft side, form the 2nd plane of inclination that can link with the 1st plane of inclination friction at above-mentioned another input shaft.
5. speed reducer as claimed in claim 2 is characterized in that,
Above-mentioned the 1st, the 2nd input shaft both sides are made of and insert the friction connector of the butt that can rub in each hollow portion hollow shaft, link the 1st, the 2nd input shaft by this friction connector friction.
6. speed reducer as claimed in claim 2 is characterized in that,
Above-mentioned the 1st, the 2nd input shaft both sides are made of hollow shaft and form the 1st, the 2nd internal spline at each hollow portion,
By being provided with the connection shaft with the external splines of the both sides of the 1st, the 2nd internal spline engagement, above-mentioned the 1st, the 2nd input shaft is bonded with the state that bears preload.
7. speed reducer as claimed in claim 6 is characterized in that,
The internal spline of above-mentioned the 1st, the 2nd input shaft possesses the following number of teeth, this number of teeth can make the result who bears preload at above-mentioned the 1st input shaft and the 2nd input shaft only rotate the amount that is less than bidentate and when applying preload, produces 15% to 60% load of the quota torque that is equivalent to the 1st, the 2nd retarder.
8. the making method of a speed reducer, this speed reducer link side by side and use the 1st, the 2nd retarder, it is characterized in that, comprising:
Link operation, the stationary axle that links above-mentioned the 1st, the 2nd retarder respectively each other and output shaft each other;
Fixing operation, the stationary axle of fixing this binding is each other;
Application of force operation makes the rotation relatively in the opposite direction each other of above-mentioned the 1st, the 2nd input shaft of speed reducer, and applies predetermined preload; And
Integrated operation, the axial end portion position more in the inner part than the 1st, the 2nd output shaft or the 1st, the 2nd stationary axle links the 1st, the 2nd input shaft of speed reducer each other with the state that applies this preload.
9. the making method of speed reducer as claimed in claim 8 is characterized in that,
Above-mentioned the 1st, the 2nd input shaft of speed reducer becomes the hollow shaft with internal spline respectively,
In above-mentioned application of force operation, apply preload up to the tooth of each internal spline consistent location in the axial direction,
In above-mentioned integrated operation, make connection shaft with external splines that the internal spline both sides with the state that applies this preload and above-mentioned the 1st, the 2nd retarder mesh, be engaged on the internal spline of the 1st, the 2nd retarder consistent with this tooth.
10. the making method of speed reducer as claimed in claim 8 or 9 is characterized in that,
In above-mentioned application of force operation, apply 15% to 60% preload of the quota torque that is equivalent to above-mentioned the 1st, the 2nd retarder,
In above-mentioned integrated operation, link above-mentioned the 1st, the 2nd input shaft of speed reducer each other with the state that bears this preload.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009063481A JP5248378B2 (en) | 2009-03-16 | 2009-03-16 | Reduction gear and reduction gear manufacturing method |
| JP063481/2009 | 2009-03-16 |
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| Publication Number | Publication Date |
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| CN101839328A true CN101839328A (en) | 2010-09-22 |
| CN101839328B CN101839328B (en) | 2013-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010135842 Active CN101839328B (en) | 2009-03-16 | 2010-03-12 | Speed reducer and manufacturing method thereof |
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| Country | Link |
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| JP (1) | JP5248378B2 (en) |
| CN (1) | CN101839328B (en) |
Cited By (1)
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| CN106195219A (en) * | 2014-08-11 | 2016-12-07 | 住友重机械工业株式会社 | deceleration device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5844628B2 (en) | 2011-12-07 | 2016-01-20 | 住友重機械工業株式会社 | Planetary gear device and method of manufacturing planetary gear device |
| KR101422411B1 (en) | 2013-06-17 | 2014-07-22 | 창원대학교 산학협력단 | Wear reduction cycloidal speed reducer using roller gear mechanism |
| CN109909198B (en) * | 2019-03-18 | 2020-04-28 | 南京涵铭置智能科技有限公司 | End cover deburring cleaning machine and cleaning method |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2010216558A (en) | 2010-09-30 |
| JP5248378B2 (en) | 2013-07-31 |
| CN101839328B (en) | 2013-05-01 |
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