WO2018138856A1 - 軸継手 - Google Patents
軸継手 Download PDFInfo
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- WO2018138856A1 WO2018138856A1 PCT/JP2017/002871 JP2017002871W WO2018138856A1 WO 2018138856 A1 WO2018138856 A1 WO 2018138856A1 JP 2017002871 W JP2017002871 W JP 2017002871W WO 2018138856 A1 WO2018138856 A1 WO 2018138856A1
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- Prior art keywords
- hub
- shaft
- shaft coupling
- driven
- drive
- Prior art date
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
- F16F15/1215—Leaf springs, e.g. radially extending
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
- F16D3/78—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members shaped as an elastic disc or flat ring, arranged perpendicular to the axis of the coupling parts, different sets of spots of the disc or ring being attached to each coupling part, e.g. Hardy couplings
- F16D3/79—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members shaped as an elastic disc or flat ring, arranged perpendicular to the axis of the coupling parts, different sets of spots of the disc or ring being attached to each coupling part, e.g. Hardy couplings the disc or ring being metallic
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
- F16D3/12—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted for accumulation of energy to absorb shocks or vibration
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
- F16F15/1216—Torsional springs, e.g. torsion bar or torsionally-loaded coil springs
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
- F16F15/1407—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers the rotation being limited with respect to the driving means
- F16F15/1414—Masses driven by elastic elements
- F16F15/1435—Elastomeric springs, i.e. made of plastic or rubber
- F16F15/1442—Elastomeric springs, i.e. made of plastic or rubber with a single mass
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
- F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
- F16D1/0852—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping between the mating surfaces of the hub and shaft
- F16D1/0864—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping between the mating surfaces of the hub and shaft due to tangential loading of the hub, e.g. a split hub
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0004—Materials; Production methods therefor metallic
- F16D2200/0008—Ferro
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0004—Materials; Production methods therefor metallic
- F16D2200/0008—Ferro
- F16D2200/0021—Steel
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0004—Materials; Production methods therefor metallic
- F16D2200/0026—Non-ferro
- F16D2200/003—Light metals, e.g. aluminium
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0034—Materials; Production methods therefor non-metallic
- F16D2200/0056—Elastomers
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2300/00—Special features for couplings or clutches
- F16D2300/22—Vibration damping
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/14—Torsion springs consisting of bars or tubes
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2224/00—Materials; Material properties
- F16F2224/02—Materials; Material properties solids
- F16F2224/0208—Alloys
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2224/00—Materials; Material properties
- F16F2224/02—Materials; Material properties solids
- F16F2224/025—Elastomers
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
- F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
Definitions
- the present invention relates to a shaft coupling.
- a shaft coupling disposed between a drive shaft and a driven shaft is connected to a drive hub connected to the drive shaft and the driven shaft.
- Patent Document 1 and Patent Document 2 a leaf spring and an elastic body are interposed between a drive hub and a driven hub in order to increase vibration absorption.
- An object of the present invention is to provide a shaft coupling capable of providing vibration absorption while maintaining torsional rigidity.
- a drive hub connected to a drive shaft so as to be integrally rotatable, a driven hub connected to a driven shaft so as to be integrally rotatable, and the drive hub,
- a shaft coupling provided with a rotation transmission portion that transmits rotation to and from the driven hub, wherein the shaft coupling is a portion of at least one of the drive hub and the driven hub, and the torsional rigidity of the entire shaft coupling is increased.
- a dynamic vibration absorber is integrally connected to a non-participating portion that is not involved.
- the vibration absorber can be improved while maintaining the torsional rigidity by attaching the dynamic vibration absorber to the non-participating part that does not participate in the torsional rigidity of the entire shaft coupling.
- the dynamic vibration absorber includes an inertial body, an attachment member that attaches the inertial body to the non-participating site, and one or a plurality of inertial bodies that are interposed between the inertial body and the attachment member. It is preferable that the inertial body, the attachment member, and the elastic member are arranged in a non-contact manner with the drive shaft and the driven shaft.
- the hub is formed in a columnar shape, and has a shaft hole into which the driving shaft or the driven shaft is fitted, and a pair of end surfaces in the axial direction. One of the end faces is preferred.
- the inertial body includes a cover portion that covers an outer peripheral surface of the hub to which the attachment member is attached, and a supported portion that is a portion supported by the elastic member and is integrally connected to the cover portion. It is preferable to have.
- the inertial body arranged so as to cover the outer peripheral surface of the hub has the same vibration absorption as the inertial body formed in a disk shape, for example, the inertial body is compared with the disk-shaped inertial body.
- the outer diameter from the rotation axis can be shortened, and the size of the outer shape can be reduced.
- the inertia body is formed in a disk shape so as to protrude in a radial direction from the outer shape of the hub.
- the elastic member is singular, and the elastic member and the mounting member are formed in a circular ring shape, and each has an insertion hole into which the drive shaft or the driven shaft is inserted without contact.
- the elastic member is preferably overlapped with a portion of the inertial body supported by the elastic member and the attachment member.
- the elastic member formed in a circular ring shape is overlaid on the attachment member and the inertial body that are also formed in a circular ring shape, and the drive shaft and the driven shaft are provided in each insertion hole.
- the dynamic vibration absorber is attached only to the drive hub.
- the drive hub is close to the excitation source and vibrates greatly as compared with the driven shaft, so that the vibration suppressing effect is increased.
- the dynamic vibration absorber is preferably attached to each of the driving hub and the driven hub. According to this configuration, compared to a case where a dynamic vibration absorber is attached to one hub, it is strong against fluctuations in parameters such as acceleration / deceleration, that is, robustness can be enhanced. Also, compared to the case where a dynamic vibration absorber is attached to one hub, the response to changes on the drive side is the same at the same moment of inertia ratio, for example, the response to a motor command when the drive shaft is a motor output shaft. Can be high.
- the perspective view of the shaft coupling with a dynamic vibration absorber of 1st Embodiment The disassembled perspective view of the shaft coupling with a dynamic vibration absorber of 1st Embodiment.
- the disassembled perspective view of the shaft coupling of 1st Embodiment Sectional drawing of the shaft coupling with a dynamic vibration absorber of 1st Embodiment.
- the disassembled perspective view of the dynamic vibration damper of 2nd Embodiment The perspective view of the shaft coupling with a dynamic vibration absorber of 3rd Embodiment.
- the disassembled perspective view of the dynamic vibration damper of 3rd Embodiment The graph which shows the test result in 3rd Embodiment.
- the shaft coupling 10 has a pair of dynamic vibration absorbers 20 and 30.
- the shaft coupling 10 includes a drive hub 40 connected to the drive shaft 12, a driven hub 50 connected to the driven shaft 14, a drive hub 40 and a driven hub 50. And a pair of disk units 80 and 90 disposed between the drive hub 40 and the transmission member 60 and between the driven hub 50 and the transmission member 60, respectively.
- the shaft coupling 10 of this embodiment is a double disk type flexible coupling provided with disk units 80 and 90.
- the drive hub 40 is formed in a cylindrical shape from aluminum, stainless steel, or the like.
- the drive hub 40 includes an outer peripheral surface 41 having a circular cross section, a circular outer end surface 42 and an inner end surface 43.
- a shaft hole 44 having a circular cross section is formed through the center of the outer end face 42 and the inner end face 43.
- the drive hub 40 includes a slit 45 formed from the outer peripheral surface 41 to the inner peripheral surface of the shaft hole 44, and a slit 46 formed from the outer end surface 42 to the slit 45. ing.
- the drive shaft 12 is inserted into the shaft hole 44 from the outer end face 42 side, and is tightened to the extent permitted by the slit 46 by the connecting screw 48 (see FIG. 2). By being reduced in diameter, it is connected to the drive hub 40 so as to be integrally rotatable.
- the driven hub 50 is formed in a cylindrical shape from aluminum, stainless steel, or the like.
- the driven hub 50 has an outer peripheral surface 51 having a circular cross section and an outer end surface 52 and an inner end surface 53 that are circular in the axial direction.
- a shaft hole 54 having a circular cross section is formed through the center of the outer end surface 52 and the inner end surface 53.
- the driven hub 50 has a slit 55 formed from the outer peripheral surface 51 to the inner peripheral surface of the shaft hole 54, and a slit 56 formed from the outer end surface 52 to the slit 55.
- the driven shaft 14 is inserted into the shaft hole 54 from the outer end surface 52 side, and is tightened by a coupling screw 58 (see FIG. 2) to the extent that the slit 56 allows, so that the shaft hole 54 By being reduced in diameter, it is connected to the driven hub 50 so as to be integrally rotatable.
- the disk unit 80 includes a plurality of metal leaf springs that are formed in a disk shape with the same size. Each leaf spring constituting the disk unit 80 is formed with a through hole 82 having a circular cross section at the center. As shown in FIG. 4, the disk unit 80 is fastened and fixed to the inner end face 43 of the drive hub 40 by a plurality of transmission bolts 81 inserted from the transmission member 60 side. Each transmission bolt 81 is arranged at an equal angle around the rotation center of the shaft coupling 10. As shown in FIG. 4, a spacer 85 is interposed between the head of the transmission bolt 81 and the disk unit 80 and is fastened by the transmission bolt 81.
- the transmission member 60 is formed in a cylindrical shape from aluminum, stainless steel, or the like, and a through hole 61 is provided between the pair of end surfaces 62 and 63.
- the disk unit 80 is fastened to the end surface 62 of the transmission member 60 by a plurality of transmission bolts 83 inserted from the drive hub 40 side so as to be integrated.
- the transmission bolts 83 are disposed between the transmission bolts 81 on the ring-shaped end surface of the disk unit 80, and the transmission bolts 81 adjacent to each other are equiangular about the rotation center of the shaft coupling 10. So as to be spaced apart from each other.
- the head of the transmission bolt 81 is fitted with a recess 64 provided on the end face 62 of the transmission member 60 so as to have play. Further, the head of the transmission bolt 83 is fitted to the recess 47 of the drive hub 40 so as to have play.
- the disk unit 90 has the same size as the metal leaf spring of the disk unit 80, and a plurality of metal leaf springs that are the same size and are formed in a disk shape are overlapped. Each leaf spring constituting the disk unit 90 is formed with a through hole 92 having a circular cross section at the center. As shown in FIG. 4, the disk unit 90 is fastened and fixed to the inner end surface 53 of the driven hub 50 by a plurality of transmission bolts 91 inserted from the transmission member 60 side.
- the transmission bolts 91 are arranged at equal angles around the rotation center of the shaft coupling 10. As shown in FIG. 4, a spacer 95 is interposed between the head of the transmission bolt 91 and the disk unit 90 and is fastened by the transmission bolt 91.
- the disk unit 90 is fastened to the end surface 63 of the transmission member 60 by a plurality of transmission bolts 93 inserted from the driven hub 50 side so as to be integrated.
- a spacer 94 is interposed between the head of the transmission bolt 93 and the disk unit 90 and is fastened by the transmission bolt 93.
- the transmission bolts 93 are arranged between the transmission bolts 91 on the ring-shaped end face of the disk unit 90 and are equiangular with respect to the transmission bolts 91 adjacent to each other and the rotation center of the shaft coupling 10. Are spaced apart from each other.
- the head of the transmission bolt 91 is fitted with a recess 65 provided in the end surface 63 of the transmission member 60 so as to have play. Further, the head of the transmission bolt 93 is fitted so as to have play with respect to the recess 57 formed on the inner end surface 53 of the driven hub 50.
- the disk unit 80, the transmission bolts 81 and 83, the transmission member 60, the transmission bolt 93, the disk unit 90, and the transmission bolts 91 and 93 constitute a rotational transmission section.
- the shaft coupling 10 is transmitted to the plurality of transmission bolts 81 via the drive hub 40. Then, it is transmitted from the transmission bolt 81 to the plurality of transmission bolts 83 via the disk unit 80 and transmitted to the transmission member 60.
- the rotational motion transmitted to the transmission member 60 is transmitted to the disk unit 90 via a plurality of transmission bolts 93 and to the driven hub 50 via the transmission bolt 91.
- the rotational motion transmitted to the driven hub 50 is transmitted to the driven shaft 14.
- the shaft coupling 10 is bent by the elastic force of the disk units 80 and 90, and the center axis of the drive shaft 12 and the center axis of the driven shaft 14 are displaced. Even in a state where they are not on the same straight line, the rotational motion is transmitted smoothly.
- the dynamic vibration absorber 20 is attached to the drive hub 40.
- the dynamic vibration absorber 20 includes a mounting body 21, a vibration damping body 22, and an inertial body 23.
- parameters such as its mass are set by, for example, a fixed point theory or an optimal tuning method in order to suppress vibration on the side of the shaft coupling 10 where the drive hub 40 is located.
- the mounting body 21 is made of a metal such as aluminum and is formed in a circular ring shape, and has a certain thickness and rigidity.
- the attachment body 21 corresponds to an attachment member.
- the mounting body 21 is fixed to the outer end face 42 of the drive hub 40 by mounting bolts 25 arranged at an equal pitch.
- the outer end surface 42 corresponds to a non-participating portion that does not participate in the torsional rigidity of the entire shaft coupling.
- the attachment body 21 has a circular insertion hole 21a at the center.
- the insertion hole 21 a has an inner diameter larger than the diameter of the drive shaft 12 so that it does not interfere with the inserted drive shaft 12.
- a part of the attachment body 21 formed along the circumferential direction is cut by a slit 24 extending in the radial direction from the insertion hole 21a.
- the vibration damping body 22 is formed in a circular ring shape by an elastic material such as synthetic rubber or elastomer, and has a certain thickness.
- the vibration damping body 22 corresponds to a single elastic member.
- the vibration damping body 22 is fixed to the attachment body 21 with an adhesive.
- the vibration attenuator 22 has a circular insertion hole 22a at the center.
- the insertion hole 22a has the same diameter as the insertion hole 21a, is coaxially arranged, and has an inner diameter larger than the diameter of the drive shaft 12, so that the drive shaft 12 is inserted so as not to interfere. .
- a recess 27 is formed on the inner peripheral surface of the insertion hole 22 a of the vibration attenuator 22 so that the inner peripheral surface does not contact the head of the mounting bolt 25.
- the vibration attenuating body 22 has a portion cut along a circumferential direction by a slit 26 extending in the radial direction.
- the inertial body 23 is made of a metal such as stainless steel or iron, and has a disk-shaped plate portion 28 and a cylindrical tube integrally connected to the peripheral portion of the plate portion 28. Part 29.
- the inner surface of the plate portion 28 is fixed to the mounting surface 22b of the vibration attenuator 22 with an adhesive.
- the plate portion 28 corresponds to a supported portion.
- a circular insertion hole 28 a is formed at the center of the plate portion 28.
- the insertion hole 28a has the same diameter as that of the insertion hole 21a and is coaxially arranged. Since the inner diameter is larger than the diameter of the drive shaft 12, the drive shaft 12 is inserted so as not to interfere.
- a recess 28b is formed on the inner peripheral surface of the insertion hole 28a so that the inner peripheral surface does not contact the head of the mounting bolt 25.
- the cylindrical portion 29 is disposed so as to be coaxial with the drive hub 40 and to cover the entire outer peripheral surface of the drive hub 40.
- the cylinder part 29 is equivalent to a cover part.
- the cylindrical portion 29 is formed with a through hole 29a penetrating between the inner peripheral surface and the outer peripheral surface, and the connecting screw 48 can be inserted therethrough.
- the dynamic vibration absorber 30 is attached to the driven hub 50.
- the dynamic vibration absorber 30 includes a mounting body 31, a vibration damping body 32, and an inertial body 33.
- parameters such as its mass are set by, for example, a fixed point theory or an optimum tuning method in order to suppress vibration on the side of the shaft coupling 10 where the driven hub 50 is located.
- the various components on the drive hub side including the drive hub 40 are the same as the various components on the driven hub side including the driven hub 50, so the attachment body 31 of the dynamic vibration absorber 30 is used.
- the vibration attenuating body 32 and the inertial body 33 have the same size and weight as the attachment body 21, the vibration attenuating body 22 and the inertial body 23 of the dynamic vibration absorber 20.
- the attachment body 31 is made of a metal such as aluminum and is formed in a circular ring shape, and has a certain thickness and rigidity.
- the attachment body 31 corresponds to an attachment member.
- the mounting body 31 is fixed to the outer end surface 52 of the driven hub 50 by mounting bolts 35 arranged at an equal pitch with respect to the outer end surface 52 of the driven hub 50.
- the outer end surface 52 corresponds to a non-participating portion that does not participate in the torsional rigidity of the entire shaft coupling.
- the attachment body 31 has a circular insertion hole 31a at the center.
- the insertion hole 31 a is configured not to interfere with the inserted driven shaft 14 by making the inner diameter larger than the diameter of the driven shaft 14.
- a part of the attachment body 31 formed along the circumferential direction is cut by a slit 34 extending in the radial direction from the insertion hole 31a.
- the vibration damping body 32 is formed in a circular ring shape by an elastic material such as synthetic rubber or elastomer, and has a certain thickness.
- the vibration damping body 32 corresponds to a single elastic member.
- the vibration damping body 32 is fixed to the attachment body 31 with an adhesive.
- the vibration attenuator 32 has a circular insertion hole 32a at the center.
- the insertion hole 32a has the same diameter as the insertion hole 31a, is coaxially arranged, and has an inner diameter larger than the diameter of the driven shaft 14, so that the driven shaft 14 is inserted so as not to interfere. .
- a recess 27 is formed on the inner peripheral surface of the insertion hole 32 a of the vibration attenuating body 32 so that the inner peripheral surface does not contact the head of the mounting bolt 35.
- the vibration attenuating body 32 has a part cut along a circumferential direction by a slit 36 extending in the radial direction.
- the inertial body 33 is made of a metal such as stainless steel or iron, and has a disk-shaped plate portion 38 and a cylindrical tube integrally connected to the peripheral portion of the plate portion 38. Part 39.
- the inner surface of the plate portion 38 is fixed to the mounting surface 32b of the vibration damping body 32 with an adhesive.
- the plate part 38 corresponds to a supported part.
- An insertion hole 38 a is formed at the center of the plate portion 38.
- the insertion hole 38a has the same diameter as that of the insertion hole 31a and is coaxially arranged.
- the inner diameter of the insertion hole 38a is larger than the diameter of the driven shaft 14, so that the driven shaft 14 is not interfered. .
- a recess 38 b is formed on the inner peripheral surface of the insertion hole 38 a so that the inner peripheral surface does not contact the head of the mounting bolt 35.
- the cylindrical portion 39 is arranged so as to be coaxial with the driven hub 50 and cover the entire outer peripheral surface of the driven hub 50.
- the cylindrical portion 39 is formed with a through hole 39a penetrating between the inner peripheral surface and the outer peripheral surface, and the connecting screw 58 can be inserted therethrough.
- the dynamic vibration absorber 30 connected to the driven hub 50 absorbs the vibration of the driven hub 50 by applying a reaction force proportional to the vibration and amplitude of the driven hub 50 by the inertial body 33. Further, the vibration damping body 32 of the dynamic vibration absorber 30 attenuates the vibration of the driven hub 50 by its own damping performance.
- the dynamic vibration absorbers 20 and 30 are attached to the drive hub 40 and the driven hub 50 of the shaft coupling 10, respectively.
- the shaft coupling 10 of the present embodiment at the same load inertia moment, that is, at the same inertia moment ratio, only one dynamic vibration absorber is a hub of either the drive hub 40 or the driven hub 50 of the shaft coupling 10.
- the response to the change on the driving side for example, the response to the motor command can be increased.
- the robustness can be increased, and it is also possible to make the change strong in the parameters related to the torque transmission system.
- the cylinder portions 29 and 39 of the inertia bodies 23 and 33 of the dynamic vibration absorbers 20 and 30 are arranged so as to cover the drive hub 40 and the driven hub 50, so Compared with the case where the whole is formed in a disk shape, the size in the radial direction can be reduced and the size can be reduced.
- the shaft coupling 10 is a part of the drive hub 40 and the driven hub 50, and the dynamic vibration absorbers 20 and 30 with respect to the outer end surfaces 42 and 52 that are non-participating parts that are not involved in the torsional rigidity of the shaft coupling 10 as a whole. Are connected together.
- the vibration absorber can be improved while maintaining the torsional rigidity by attaching the dynamic vibration absorber to the non-participating part that does not participate in the torsional rigidity of the entire shaft coupling.
- the dynamic vibration absorbers 20 and 30 include inertia bodies 23 and 33, attachment bodies 21 and 31 as attachment members for attaching the inertia bodies 23 and 33 to non-participating portions of the drive hub 40 and the driven hub 50, and inertia. It includes vibration damping bodies 22 and 32 as a single elastic member that is interposed between the bodies 23 and 33 and the attachment bodies 21 and 31 and supports the inertia bodies 23 and 33. Moreover, the inertia bodies 23 and 33, the attachment bodies 21 and 31, and the vibration damping bodies 22 and 32 are arrange
- the drive hub 40 and the driven hub 50 of the shaft coupling 10 are formed in a cylindrical shape, and the shaft holes 44 and 54 into which the drive shaft 12 and the driven shaft 14 are fitted, and the outer end surfaces 42 and 52 in the axial direction. It has inner end faces 43 and 53, respectively, and the outer end faces 42 and 52 are non-participating parts to which attachment members are attached.
- the vibration absorbers 20 and 30 are attached to the outer end faces 42 and 52 of the cylindrical drive hub 40 and the driven hub 50, so that the vibration absorption can be improved while maintaining the torsional rigidity.
- the inertia bodies 23 and 33 are supported by the cylinder part 29 which covers the outer peripheral surface of the drive hub 40 and the driven hub 50 to which the attachment bodies 21 and 31 are attached, and the vibration damping bodies 22 and 32 as elastic members. It is a site
- the vibration damping bodies 22 and 32 as elastic members and the attachment bodies 21 and 31 as attachment members are formed in a circular ring shape, and the insertion hole 21a into which the drive shaft 12 and the driven shaft 14 are inserted without contact. , 22a, 31a, 32a.
- the vibration attenuating bodies 22 and 32 are overlapped with the attachment bodies 21 and 31 and the portions of the inertial bodies 23 and 33 that are supported by the vibration attenuating bodies 22 and 32.
- the vibration damping bodies 22 and 32 formed in a circular ring shape are superposed on the attachment bodies 21 and 31 and the inertia bodies 23 and 33 that are also formed in a circular ring shape, and each insertion hole
- the drive shaft 12 and the driven shaft 14 are inserted in a non-contact manner into 21a, 22a, 31a, and 32a.
- the dynamic vibration absorbers 20 and 30 of this embodiment are attached to the drive hub 40 and the driven hub 50, respectively. As a result, the vibration at the drive hub 40 and the vibration at the driven hub 50 can be individually absorbed by the dynamic vibration absorbers 20 and 30.
- the shaft couplings of the other embodiments have the same configuration as the shaft coupling 10 of the first embodiment, except that the dynamic vibration absorbers 120, 220, and 320 are attached only to the drive hub 40, and the dynamic vibration absorber 120. , 220 and 320 are greatly different from those of the first embodiment. Below, the structure different from 1st Embodiment is demonstrated further.
- the dynamic vibration absorber 120 of the second embodiment shown in FIGS. 5 and 6 includes an attachment body 121, a plurality of vibration damping bodies 122, and an inertial body 123.
- the mounting body 121 is made of metal such as aluminum, has an outer diameter longer than the outer diameter of the drive hub 40, is formed in a circular ring shape, has a certain thickness, and has rigidity. ing.
- the attachment body 121 corresponds to an attachment member.
- the attachment body 121 is fixed to the outer end face 42 of the drive hub 40 by attachment bolts 125 arranged at an equal pitch, and is arranged so as to be coaxial with the drive hub 40.
- the attachment body 121 has a circular insertion hole 121a at the center.
- the insertion hole 121 a has an inner diameter larger than the diameter of the drive shaft 12, so that it does not interfere with the inserted drive shaft 12.
- a part of the attachment body 121 formed along the circumferential direction is cut by a slit 124 extending in the radial direction from the insertion hole 121a.
- the vibration damping body 122 is formed in a pin shape from an elastic material such as synthetic rubber or elastomer.
- the vibration damping body 122 corresponds to a plurality of elastic members. Inner ends of the plurality of vibration attenuating bodies 122 are fixed to the attachment body 121 with an adhesive so as to have an equal pitch around the insertion hole 121a.
- the vibration attenuating body 122 is arranged around the insertion hole 121a so as not to interfere with the drive shaft 12 by being separated in the radial direction.
- the inertial body 123 is made of a metal such as stainless steel or iron, and is formed in a disk shape having the same outer diameter as the mounting body 121. That is, it is formed so as to protrude in the radial direction from the outer shape of the drive hub 40.
- the inner surface of the inertial body 123 is fixed to the outer end of each vibration attenuating body 122 by an adhesive, and is arranged in parallel to and spaced from the attachment body 121. As described above, both ends of the vibration damping body 122 in the axial direction are fixed to the inertia body 123 and the attachment body 121.
- the inner surface of the inertial body 123 corresponds to the supported portion.
- An insertion hole 123 a is formed at the center of the inertial body 123.
- the insertion hole 123a has the same diameter as the insertion hole 121a and is arranged coaxially with the insertion hole 121a.
- the insertion hole 123a of the inertial body 123 has an inner diameter larger than the outer diameter of the drive shaft 12, and is inserted so that the drive shaft 12 does not interfere.
- the inertial body 123 has a plurality of through holes 123b.
- the through hole 123b is formed to have a larger diameter than the head of the mounting bolt 125 so as not to contact the head of the mounting bolt 125 that fixes the mounting body 121 to the drive hub 40.
- the dynamic vibration absorber 120 is attached only to the drive hub 40. According to this embodiment, the following effects can be obtained.
- the inertial body 123 of the present embodiment is formed in a disc shape so as to protrude in the radial direction from the outer shape of the drive hub 40.
- the dynamic vibration absorber 120 of this embodiment includes a plurality of vibration damping bodies 122, which are formed in a pin shape.
- the vibration attenuating body 122 is arranged around the drive shaft, and both ends in the axial direction are fixed to the inertial body 123 and the attachment body 121.
- both ends of the plurality of vibration damping bodies 122 arranged around the drive shaft are fixed to the inertia body and the attachment member, whereby the inertia body 123 can be supported.
- the dynamic vibration absorber 220 includes a mounting body 221, a single vibration damping body 222, and an inertial body 223.
- the mounting body 221 and the vibration attenuating body 222 have the same configuration as the mounting body 21 and the vibration attenuating body 22 of the first embodiment, respectively, and the same as that of the first embodiment with respect to the outer end surface 42 of the drive hub 40. Installed on. For this reason, for each part of the attachment body 221 and the vibration attenuating body 222 and the attachment bolt 225, 200 is assigned to the reference numerals attached to each part of the attachment body 21, the vibration attenuation body 22 and the attachment bolt 25 of the first embodiment. The added code is attached and the description is omitted.
- the inertia body 223 is made of a metal such as stainless steel or iron, and has an outer diameter larger than that of the attachment body 221 and is formed in a disk shape. That is, it is formed so as to protrude in the radial direction from the outer shape of the drive hub 40.
- the inner surface of the inertial body 223 is fixed to the outer end of each vibration attenuating body 222 with an adhesive, and is disposed in parallel to and spaced from the attachment body 221. As described above, both sides of the vibration damping body 222 in the axial direction are fixed to the inertial body 223 and the attachment body 221.
- the inner surface of the inertial body 223 corresponds to the supported portion.
- an insertion hole 223a is formed at the center of the inertial body 223.
- the insertion hole 223a has the same diameter as the insertion holes 221a and 222a and is arranged coaxially with the insertion hole 221a.
- the insertion hole 223a of the inertial body 223 has an inner diameter larger than the outer diameter of the drive shaft 12, and is inserted so that the drive shaft 12 does not interfere.
- the insertion hole 223a has a plurality of recesses 223b.
- the recess 223b is formed to have a larger diameter than the head of the mounting bolt 225 so as not to contact the head of the mounting bolt 225 that fixes the mounting body 221 to the drive hub 40.
- FIG. 9 shows the test results when mounted between the driven shaft and the driven shaft.
- the horizontal axis indicates the moment of inertia ratio
- the vertical axis indicates the response of auto-tuning. In the vertical axis, the higher the position, the higher the response.
- the control device that controls the drive shaft has an auto-tuning function and measures the response in auto-tuning when the inertia moment ratio is changed.
- Auto-tuning estimates the inertia and friction of the entire drive unit including the motor from the motor current and motor speed during operation, and automatically adjusts the servo system gain online based on a predetermined control law. It is a function that improves responsiveness, robustness, and steady-state characteristics while updating and maintaining stability.
- the response of auto-tuning is higher when the dynamic vibration absorber 220 is attached to the drive hub 40 as in this embodiment.
- the response is higher when the dynamic vibration absorber 220 is attached to the drive hub 40 because the drive side is closer to the motor that is the vibration generation source. Is considered to be easily demonstrated.
- the shaft coupling 10 configured as described above can easily realize the following effects in addition to (7) of the second embodiment.
- the dynamic vibration absorber 220 is attached only to the drive hub 40.
- the response of auto-tuning can be enhanced when the dynamic vibration absorber 220 is attached to the drive hub 40.
- the dynamic vibration absorber 120 is attached only to the drive hub 40, it can be expected that the responsiveness of auto-tuning is increased as in the present embodiment.
- the dynamic vibration absorber 320 of the fourth embodiment shown in FIGS. 10 and 11 includes a mounting body 321, a single vibration damping body 322, and an inertial body 323.
- the mounting body 321 shown in FIG. 11 is made of metal such as aluminum, has substantially the same diameter as the outer diameter of the drive hub 40, is formed in a circular ring shape, and has a certain thickness. It has rigidity.
- the attachment body 321 corresponds to an attachment member.
- the attachment body 321 is fixed to the outer end face 42 of the drive hub 40 by attachment bolts 325 arranged at an equal pitch, and is arranged so as to be coaxial with the drive hub 40.
- a fitting hole 321a is formed through the center of the mounting body 321.
- the vibration attenuating body 322 is formed in a cylindrical shape, and is bonded and fixed in a state where the inner end in the axial direction is fitted into the fitting hole 321a.
- the outer peripheral surface 322b of the vibration damping body 322 is formed in a gear shape, and meshing with a gear-shaped portion formed on the inner peripheral surface of the fitting hole 321a makes it impossible to rotate around the axis. It has become.
- a part of the attachment body 321 formed along the circumferential direction is cut by a slit 324 extending in the radial direction from the fitting hole 321a.
- the vibration damping body 322 is formed of an elastic material such as synthetic rubber or elastomer.
- the vibration damping body 322 corresponds to a single elastic member.
- An insertion hole 322a through which the drive shaft is inserted in a non-contact manner is provided in the center of the vibration damping body 322. That is, the inner diameter of the insertion hole 322a is made larger than the outer diameter of a drive shaft (not shown) attached to the shaft hole 44 of the drive hub 40.
- the inertial body 323 is made of a metal such as stainless steel or iron, and has a disk-like plate portion 328 and a cylindrical shape integrally connected to the peripheral portion of the plate portion 328. And a cylindrical portion 329.
- a fitting hole 328 a is formed at the center of the plate portion 328. In the fitting hole 328a, the outer end in the axial direction of the vibration attenuating body 322 is bonded and fixed.
- the vibration attenuating body 322 has a gear-shaped outer peripheral surface 322b meshed with a gear-shaped portion formed on the inner peripheral surface of the fitting hole 328a, so that rotation around the axis is impossible.
- the plate part 328 corresponds to a supported part.
- the plate portion 328 is spaced apart and parallel to the attachment body 321 so as not to contact each other.
- the plate portion 328 is provided with a storage hole 328b through which the head of the mounting bolt 325 is stored separately.
- the cylinder portion 329 is disposed so as to be coaxial with the drive hub 40 and to cover the outer peripheral surface of the drive hub 40.
- the cylinder part 329 corresponds to a cover part.
- a through-hole (not shown) penetrating between the inner peripheral surface and the outer peripheral surface is formed in the cylindrical portion 329, and the connection screw 48 described in the first embodiment is inserted therethrough.
- the vibration attenuator 322 is single and is formed in a cylindrical shape so that it can be inserted in a non-contact state with respect to the drive shaft. Further, the vibration attenuating body 322 is fixed by fitting both ends in the axial direction to the inertial body 323 and the attachment body 321. As a result, both ends of the single vibration damping body 322 in the axial direction are fitted and fixed to the inertia body and the attachment member, so that the inertia body 323 can be supported.
- the shaft coupling is a double disc type, but may be a single disc type. Further, the shaft coupling is not limited to the disk-type shaft coupling, and may be replaced with another type of flexible shaft coupling or a rigid coupling.
- the outer end surfaces 42 and 52 of the hubs 40 and 50 are non-participating portions to which the attachment members are attached.
- the inner end surfaces 43 and 53 of the hubs 40 and 50 may be non-participating portions to which the attachment members are attached.
- the non-participating portion may be the outer peripheral surface of the drive hub 40 and the driven hub 50, and a dynamic vibration absorber may be attached and fixed to the outer peripheral surface.
- a dynamic vibration absorber may be attached and fixed to the outer peripheral surface.
- the dynamic vibration absorbers 120, 220, and 320 are attached to the drive hub 40, but the dynamic vibration absorber may be attached only to the driven hub 50.
- the outer peripheral surface of the vibration damping body 322 has a gear shape, but is not limited to this shape.
- a groove or protrusion is provided on the outer peripheral surface of the vibration attenuating body 322, and the inertia member and the mounting member that are fitted to the vibration attenuating body 322 are provided with a protrusion or groove that is fitted to the groove or protrusion. Just do it.
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Abstract
Description
本発明の目的は、捩り剛性を維持したまま振動吸収性を持たせることができる軸継手を提供することにある。
また、前記動吸振器は、慣性体と、前記慣性体を前記非関与部位に取付ける取付部材と、前記慣性体と前記取付部材との間に介在して前記慣性体を支持する単数または複数の弾性部材とを含み、前記慣性体、前記取付部材及び前記弾性部材は、前記駆動軸及び前記従動軸とは非接触で配置されることが好ましい。
また、前記ハブは、円柱状に形成されて、前記駆動軸または前記従動軸が嵌合する軸孔と、軸方向に一対の端面とを有しており、前記非関与部位が前記ハブの何れか一方の端面であることが好ましい。
また、前記慣性体は、前記取付部材が取付けられた前記ハブの外周面を覆う覆い部と、前記弾性部材に支持される部位であって、前記覆い部と一体に連結された被支持部とを有することが好ましい。
この構成にすれば、簡単な構成で捩り剛性を維持したまま振動吸収性を持たせることができる。
この構成にすれば、駆動ハブは加振源に近くて、従動軸に比して大きく振動するため、振動抑制効果が大きくなる。
この構成にすれば、1つのハブに動吸振器が取付けられている場合に比して、加減速等のパラメータの変動に強く、すなわち、ロバスト性を高くすることができる。また、1つのハブに動吸振器を取付けた場合に比して、同じ慣性モーメント比においては、駆動側の変化に対する応答性、例えば、駆動軸がモータの出力軸の場合、モータ指令に対する応答性を高くできる。
図1~図4を参照して、本発明の軸継手を具体化した第1実施形態について説明する。
図1、図2に示すように、軸継手10は一対の動吸振器20、30を有している。
図4に示すように、ディスクユニット80は、駆動ハブ40側から挿通された複数の伝動ボルト83により、伝達部材60の端面62に対して締め付けされて一体となるように固定されている。なお、各伝動ボルト83は、ディスクユニット80のリング状の端面において伝動ボルト81間に配置されるとともに、相互に隣接する伝動ボルト81とは、軸継手10の回転中心を中心として等角度となるように離間配置されている。
図4に示すように使用状態において、軸継手10は、図示しないモータによって駆動軸12が回転されると、この回転運動は、駆動ハブ40を介して複数の伝動ボルト81に伝達される。そして、伝動ボルト81からディスクユニット80を介して複数の伝動ボルト83に伝達され、伝達部材60に伝達される。この伝達部材60に伝達された回転運動は、複数の伝動ボルト93を介して、ディスクユニット90に伝達されるとともに、伝動ボルト91を介して従動ハブ50に伝達される。そして、この従動ハブ50に伝達された回転運動は、従動軸14に伝達される。上述した駆動軸12から従動軸14へのトルクの伝達中において、ディスクユニット80、90の弾性力によって、軸継手10に撓みが生じ、駆動軸12の中心軸線と従動軸14の中心軸線とが同一直線上にない状態においても、回転運動が円滑に伝達される。
図示しないモータによって駆動軸12が回転されると、この回転運動は、駆動ハブ40、ディスクユニット80、伝達部材60、従動ハブ50等を介して、従動軸14に伝達される。また、駆動ハブ40に連結された動吸振器20は、慣性体23により、駆動ハブ40での振動及び振幅に比例した反力を与えて、駆動ハブ40の振動を吸収する。また、動吸振器20の振動減衰体22は、自身の減衰性能により駆動ハブ40の振動を減衰する。
(1)軸継手10は、駆動ハブ40及び従動ハブ50の部位であって、軸継手10全体の捩り剛性に関与しない非関与部位である外端面42、52に対して動吸振器20、30がそれぞれ一体に連結されている。この結果、軸継手全体の捩り剛性に関与しない非関与部位に対して動吸振器が取付けられることにより、捩り剛性を維持したまま振動吸収性を上げることができる。
図5及び図6に示す第2実施形態の動吸振器120は、取付体121と、複数の振動減衰体122と、慣性体123とを備えている。取付体121はアルミ等の金属製であって、駆動ハブ40の外径よりも長い外径を有していて、円形リング状に形成されているとともに、一定の厚みを有して剛性を備えている。取付体121は、取付部材に相当する。取付体121は、駆動ハブ40の外端面42に対して、等ピッチに配置された取付ボルト125により、固定されていて、駆動ハブ40と同軸となるように配置されている。取付体121は、中央部に円形の挿入孔121aを有している。挿入孔121aは、駆動軸12の径よりも内径が大きくされていることにより、挿入された駆動軸12と干渉しないようにされている。取付体121は、挿入孔121aから径方向に延びたスリット124により、周方向に沿って形成された部位の一部が切れている。
本実施形態によれば、以下のような効果を得ることができる。
図7及び図8に示す第3実施形態の動吸振器220は、取付体221と、単数の振動減衰体222と、慣性体223とを備えている。取付体221及び振動減衰体222は、第1実施形態の取付体21及び振動減衰体22とそれぞれ同様の構成を備えていて、駆動ハブ40の外端面42に対して、第1実施形態と同様に取付けられている。このため、取付体221及び振動減衰体222の各部位、並びに取付ボルト225については、第1実施形態の取付体21及び振動減衰体22、並びに取付ボルト25の各部位に付した符号に200を加算した符号を付して、その説明を省略する。
図10及び図11に示す第4実施形態の動吸振器320は、取付体321と、単数の振動減衰体322と、慣性体323とを備えている。
(10)本実施形態では、振動減衰体322は、単数であって、駆動軸に対して非接触の状態で挿入可能に筒状に形成されている。また、振動減衰体322は、慣性体323と取付体321とに対して、軸方向の両端が嵌合して固定されている。この結果、単数の振動減衰体322の軸方向の両端が慣性体と取付部材とに対して嵌合して固定されていることにより、慣性体323を支持することができる。
前記実施形態では、軸継手は、ダブルディスクタイプとしたが、シングルディスクタイプとしてもよい。また、軸継手は、ディスクタイプの軸継手に限定されず、他のタイプの撓み軸継手、或いはリジッドカップリングに代えることも可能である。
第2実施形態、第3実施形態、及び第4実施形態では、駆動ハブ40に動吸振器120、220、320を取付けたが、動吸振器を従動ハブ50に対してのみ取付けてもよい。
Claims (8)
- 駆動軸に対し一体回転可能に連結される駆動ハブと、従動軸に対し一体回転可能に連結される従動ハブと、前記駆動ハブと前記従動ハブとの間で回転を伝動する回転伝動部とを備えた軸継手において、
前記駆動ハブ及び前記従動ハブの少なくともいずれか一方のハブの部位であって、該軸継手全体の捩り剛性に関与しない非関与部位に対して一体に連結された動吸振器を備える軸継手。 - 前記動吸振器は、慣性体と、前記慣性体を前記非関与部位に取付ける取付部材と、前記慣性体と前記取付部材との間に介在して前記慣性体を支持する単数または複数の弾性部材とを含み、前記慣性体、前記取付部材及び前記弾性部材は、前記駆動軸及び前記従動軸とは非接触で配置される請求項1に記載の軸継手。
- 前記ハブは、円柱状に形成されて、前記駆動軸または前記従動軸が嵌合する軸孔と、軸方向に一対の端面とを有しており、
前記非関与部位が前記ハブの何れか一方の端面である請求項2に記載の軸継手。 - 前記慣性体は、前記取付部材が取付けられた前記ハブの外周面を覆う覆い部と、前記弾性部材に支持される部位であって、前記覆い部と一体に連結された被支持部とを有する請求項3に記載の軸継手。
- 前記慣性体は、前記ハブの外形よりも径方向に張り出して円板状に形成されている請求項3に記載の軸継手。
- 前記弾性部材は、単数であって、
該弾性部材及び前記取付部材は、円形リング状に形成されて、前記駆動軸または前記従動軸が非接触で挿入される挿入孔をそれぞれ有し、
前記弾性部材は、前記慣性体の該弾性部材に支持される部位と前記取付部材とに重ね合わされている請求項4または請求項5に記載の軸継手。 - 前記駆動ハブのみに、前記動吸振器が取付けられている請求項1乃至請求項6のうちいずれか1項に記載の軸継手。
- 前記駆動ハブ及び前記従動ハブの各々に、前記動吸振器が取付けられている請求項1乃至請求項6のうちいずれか1項に記載の軸継手。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES17894475T ES2926496T3 (es) | 2017-01-27 | 2017-01-27 | Acoplamiento de árbol |
CN201780079698.2A CN110192043B (zh) | 2017-01-27 | 2017-01-27 | 联轴节 |
PCT/JP2017/002871 WO2018138856A1 (ja) | 2017-01-27 | 2017-01-27 | 軸継手 |
JP2018564035A JP6791513B2 (ja) | 2017-01-27 | 2017-01-27 | 軸継手 |
US16/479,439 US11486450B2 (en) | 2017-01-27 | 2017-01-27 | Shaft coupling |
KR1020197022747A KR102639799B1 (ko) | 2017-01-27 | 2017-01-27 | 샤프트 커플링 |
EP17894475.7A EP3575623B1 (en) | 2017-01-27 | 2017-01-27 | Shaft coupling |
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PCT/JP2017/002871 WO2018138856A1 (ja) | 2017-01-27 | 2017-01-27 | 軸継手 |
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EP (1) | EP3575623B1 (ja) |
JP (1) | JP6791513B2 (ja) |
KR (1) | KR102639799B1 (ja) |
CN (1) | CN110192043B (ja) |
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JP2020167849A (ja) * | 2019-03-29 | 2020-10-08 | 本田技研工業株式会社 | アクチュエータ |
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TWM608704U (zh) * | 2020-11-27 | 2021-03-01 | 第一傳動科技股份有限公司 | 用於升降裝置的固定機構 |
US20220240657A1 (en) * | 2021-01-29 | 2022-08-04 | Nomadd Desert Solar Solutions | Shaft and a coupling member for coupling shafts |
US20230235605A1 (en) * | 2022-01-24 | 2023-07-27 | Cornellcookson, Llc | Vibration isolator for overhead doors |
US20230235616A1 (en) * | 2022-01-24 | 2023-07-27 | Cornellcookson, Llc | Vibration isolator for overhead doors |
CN117646765B (zh) * | 2024-01-30 | 2024-05-03 | 吉林天池钼业有限公司 | 一种输出部带自启动功能的联轴器 |
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- 2017-01-27 US US16/479,439 patent/US11486450B2/en active Active
- 2017-01-27 CN CN201780079698.2A patent/CN110192043B/zh active Active
- 2017-01-27 JP JP2018564035A patent/JP6791513B2/ja active Active
- 2017-01-27 EP EP17894475.7A patent/EP3575623B1/en active Active
- 2017-01-27 KR KR1020197022747A patent/KR102639799B1/ko active IP Right Grant
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Also Published As
Publication number | Publication date |
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CN110192043A (zh) | 2019-08-30 |
KR20190111968A (ko) | 2019-10-02 |
ES2926496T3 (es) | 2022-10-26 |
KR102639799B1 (ko) | 2024-02-22 |
JP6791513B2 (ja) | 2020-11-25 |
US11486450B2 (en) | 2022-11-01 |
EP3575623B1 (en) | 2022-08-03 |
JPWO2018138856A1 (ja) | 2019-11-14 |
EP3575623A1 (en) | 2019-12-04 |
EP3575623A4 (en) | 2020-09-09 |
US20190345986A1 (en) | 2019-11-14 |
CN110192043B (zh) | 2022-05-27 |
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