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WO2018168765A1 - Dispositif de réduction de vitesse - Google Patents

Dispositif de réduction de vitesse Download PDF

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Publication number
WO2018168765A1
WO2018168765A1 PCT/JP2018/009494 JP2018009494W WO2018168765A1 WO 2018168765 A1 WO2018168765 A1 WO 2018168765A1 JP 2018009494 W JP2018009494 W JP 2018009494W WO 2018168765 A1 WO2018168765 A1 WO 2018168765A1
Authority
WO
WIPO (PCT)
Prior art keywords
casing
bolt
carrier member
speed reducer
carrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2018/009494
Other languages
English (en)
Japanese (ja)
Inventor
卓 小浜田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissei Corp
Original Assignee
Nissei Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nissei Corp filed Critical Nissei Corp
Priority to CN201880010399.8A priority Critical patent/CN110268180B/zh
Publication of WO2018168765A1 publication Critical patent/WO2018168765A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear

Definitions

  • the present invention relates to a casing rotation type speed reducer.
  • Patent Document 1 As a casing rotation type speed reducer, one described in JP 2010-216551 A (Patent Document 1) is known.
  • the tool magazine 3 is connected to the rotary casing 317 of the speed reducer 310, and the speed reducer 310 (first support block 314) is fixed to the fixing portion 308 with a thick bolt 328.
  • the thick bolt 328 is disposed only on the lower side in order to avoid the pinion 304 and the like.
  • the pinion 304 meshes with a bevel gear 307 fixed by a small bolt 305 with respect to the input shaft 311 of the speed reducer 310.
  • the first support block 314 and the second support block 315 that support the external gear 312 of the speed reducer 310 and rotatably support the rotary casing 317 include an inner pin 323 and an inner pin 323 formed integrally with the first support block 314. They are connected by thin bolts 316.
  • a disc 319 is fixed to the rotary casing 317 so as to overlap the end surface of the first support block 314 in the rotational axis direction of the speed reducer 310 (rotary casing 317). When the thin bolt 316 is broken, the disc 319 is placed on the end surface of the first support block 314 so that the rotary casing 317 or the tool magazine 3 is prevented from falling off.
  • a main object of the present invention is to provide a speed reducer that can prevent the entire speed reducer from falling from a fixed portion.
  • the invention according to claim 1 supports a casing having a cylindrical inner surface, an inscribed member having an outer surface inscribed in the inner surface of the casing, and the inscribed member.
  • a recess is formed on the other of the carrier members, and the retaining member reaches the inside of the recess.
  • the carrier member is fixed to the fixing portion by a fastening member, and the retaining member is opposite to the fastening member with respect to the rotation center axis of the casing. It is arrange
  • a plurality of the retaining members are provided and arranged in the circumferential direction.
  • the concave portion is a circumferential groove.
  • the retaining member is a bolt, and a bolt hole into which the bolt is inserted is provided in the one of the fixing portion or the carrier member. To do.
  • the invention described in claim 6 is characterized in that, in the above invention, a gap is provided between the retaining member and the recess.
  • the main effect of the present invention is to provide a speed reducer that can prevent the entire speed reducer from falling from the fixed portion.
  • FIG. 2 is a sectional view taken along line AA in FIG. 1.
  • FIG. 1 is a longitudinal sectional view of a reduction gear 1 according to the present invention
  • FIG. 2 is a sectional view taken along line AA in FIG.
  • the speed reduction device 1 includes a fixed portion 2 and a speed reducer 4 fixed to the fixed portion 2.
  • the fixed portion 2 includes a fixed portion case 10 as an outer shell.
  • a motor as a drive source (not shown) is attached above the fixed portion 2, and a motor shaft as an output shaft of the motor is connected to a joint shaft 12 disposed in the fixed portion case 10.
  • the joint shaft 12 is supported via bearings 14 and 14 so as to be rotatable around its own axis.
  • a pinion 16 is formed at the tip of the joint shaft 12 by direct cutting.
  • the reduction gear 4 includes a crankshaft 20 as an input shaft, two planetary gears 22A and 22B as inscribed members, a first carrier member 24 and a second carrier member 26 as carrier members, and a rotating casing.
  • a casing main member 28 and a casing guide member 30 are provided as (output unit).
  • the first carrier member 24 and the second carrier member 26 are cylindrical block-shaped members each having a central hole of the same size, and are connected in a state where the central holes are continuous with a space therebetween.
  • the crankshaft 20 is passed through these central holes in a state where the central axis thereof coincides with the central axis of the central hole.
  • the coincident center axis (center axis C in FIG. 1) intersects with the center axis of the joint shaft 12 of the fixed portion 2 in a state where the angle on the speed reducer 4 side is an obtuse angle.
  • a bevel gear 32 is fixed to an end portion of the crankshaft 20 on the fixed portion 2 side.
  • the bevel gear 32 meshes with the pinion 16 of the joint shaft 12.
  • Two disc-shaped eccentric portions 34 ⁇ / b> A and 34 ⁇ / b> B that are eccentric with respect to the central axis C are formed in the central portion of the crankshaft 20.
  • the central axis of the eccentric part 34A on the fixed part 2 side is disposed at a position of 180 ° with respect to the central axis C with respect to the central axis of the eccentric part 34B on the opposite side.
  • the crankshaft 20 is rotatably supported by bearings 36A and 36B.
  • the bearing 36 ⁇ / b> A on the fixed portion 2 side is fixed in the central hole of the first carrier member 24, and the bearing 36 ⁇ / b> B on the opposite side is fixed in the central hole of the second carrier member 26.
  • the planetary gears 22A and 22B are disk-shaped members having outer teeth 38A and 38B and a central hole, respectively.
  • An eccentric part 34A of the crankshaft 20 is located in the central hole of the planetary gear 22A, and the planetary gear 40A is interposed between the eccentric part 34A and the central hole of the planetary gear 22A.
  • 22A is supported so as to be rotatable around the eccentric portion 34A.
  • the planetary gear 22 ⁇ / b> A can revolve by the eccentric rotation of the eccentric portion 34 ⁇ / b> A caused by the rotation around the central axis C of the crankshaft 20.
  • the eccentric portion 34B of the crankshaft 20 is located in the central hole of the planetary gear 22B, and the needle bearing 40B is interposed between the eccentric portion 34B and the central hole of the planetary gear 22B.
  • the planetary gear 22B is supported so as to be able to rotate around the eccentric portion 34B.
  • the planetary gear 22B can revolve due to the eccentric rotation of the eccentric portion 34B.
  • Six pin holes 42A are arranged at equal intervals in the circumferential direction at a portion between the outer tooth portion 38A and the central hole in the planetary gear 22A. Each pin hole 42A has a central axis parallel to the central axis C.
  • pin holes 42B are arranged at equal intervals in the circumferential direction at a portion between the outer tooth portion 38B and the central hole in the planetary gear 22B.
  • Each pin hole 42B has a central axis parallel to the central axis C.
  • Six pin holes 44 are arranged at equal intervals in the circumferential direction at a portion between the outer curved surface and the central hole in the first carrier member 24. Each pin hole 44 has a central axis parallel to the central axis C.
  • six pin holes 46 are arranged at equal intervals in the circumferential direction at a portion between the outer curved surface and the central hole in the second carrier member 26. Each pin hole 46 has a central axis parallel to the central axis C. Then, a total of six cylindrical carrier pins 48 are passed through the pin holes 44 and 46 in a state where the corresponding pin holes 46 and the corresponding pin holes 46 are matched, whereby the first carrier member 24 and the second carrier The member 26 is connected with an interval.
  • the inner diameters of the pin holes 44 and 46 coincide with the outer diameter of the carrier pin 48.
  • Planetary gears 22 ⁇ / b> A and 22 ⁇ / b> B are disposed between the first carrier member 24 and the second carrier member 26.
  • the corresponding carrier pins 48 pass through the pin holes 42A and 42B of the planetary gears 22A and 22B.
  • a cylindrical metal 49 is disposed on the outer side in the radial direction of each carrier pin 48 and in each pin hole 42A, 42B.
  • the inner diameters of the pin holes 42 ⁇ / b> A and 42 ⁇ / b> B are larger than the outer diameter of the metal 49.
  • Bolt holes 50 are opened in parallel to the central axis C on the surface of the fixed part 2 side in the lower part of the first carrier member 24 (the part opposite to the joint shaft 12 with respect to the central axis C).
  • a bolt hole 52 is formed in the lower portion of the fixed portion case 10. Then, the first carrier member 24 and thus the speed reducer 4 are fixed to the fixing portion 2 by the bolt 54 (fastening member) common to the bolt hole 52 or the bolt hole 50.
  • the casing main member 28 is a cylindrical member having a central hole.
  • the central axis of the casing main member 28 or its central hole coincides with the central axis C.
  • Inner teeth 60A and 60B that mesh with the outer teeth 38A and 38B of the planetary gears 22A and 22B are formed on the inner surface of the center hole on the fixed portion 2 side.
  • the inner diameter of the central hole is larger than the outer diameter of the planetary gears 22A and 22B, and the number of inner teeth of the casing main member 28 is larger than the number of outer teeth of the planetary gears 22A and 22B.
  • a second carrier member 26 is disposed on the inner side of the central hole on the side opposite to the fixed portion 2.
  • a cover 62 that covers the central hole of the casing main member 28 is attached to the surface of the casing main member 28 opposite to the fixed portion 2 by a plurality of bolts 64.
  • a plurality of connecting portions 66 for connecting a tool magazine or the like (not shown) are provided on the outer surface portion of the casing main member 28.
  • the casing guide member 30 is a cylindrical member having a central hole, and the central axis and the central axis of the central hole coincide with the central axis C.
  • a cross roller 70 is interposed between the casing guide member 30 and the first carrier member 24, and the first carrier member 24 rotatably supports the casing guide member 30.
  • the first carrier member 24 (inner ring), the cross roller 70, and the casing guide member 30 (outer ring) can be regarded as a cross roller bearing.
  • a plurality of bolt holes 72 parallel to the central axis C are arranged at equal intervals in the circumferential direction on the peripheral edge of the casing guide member 30.
  • a bolt hole 74 parallel to the central axis C is opened on the surface of the casing main member 28 on the fixed portion 2 side so as to correspond to the bolt hole 72.
  • Bolts 76 are inserted into the respective pairs of bolt holes 72 to 74, and the casing guide member 30 is connected to the casing main member 28.
  • the groove 80 goes around the outer curved surface of the first carrier member 24.
  • a gap exists between the fixed case 10 and the casing guide member 30.
  • a plurality of bolt holes 82 orthogonal to the central axis C are arranged at equal intervals in the circumferential direction on the radially outer portion of the groove 80 in the fixed portion case 10.
  • the bolt holes 82 are provided on the top and bottom (FIGS. 1 and 2) and on the left and right (FIG. 2).
  • Each bolt hole 82 is provided with a bolt 84 as a retaining member.
  • Each bolt 84 is inserted so that the head portion protrudes from the inner surface of the fixed portion case 10 at the radially outer side and the distal end portion at the radially inner side.
  • the width of the tip of each bolt 84 (the dimension in the direction of the central axis C) is made smaller than the width of the groove 80.
  • the tip of each bolt 84 reaches the inside of the groove 80. A gap exists between the tip of each bolt 84 and the groove 80.
  • the speed reducer 4 or the tool magazine is prevented from dropping as follows. That is, when the speed reducer 4 tries to move away from the fixing portion 2, the front end portion of each bolt 84 comes into contact with the groove 80 (mainly the surface on the fixing portion 2 side) of the first carrier member 24, and each bolt 84 is in the first The carrier member 24 and thus the speed reducer 4 is supported.
  • the reduction gear 1 is a planetary gear having casing main members 28 and casing guide members 30 having cylindrical inner teeth 60A and 60B and outer teeth 38A and 38B meshing with the inner teeth 60A and 60B of the casing main member 28.
  • the first carrier member 24 and the first carrier member 24 and the second carrier member 26 that support the casing main member 28 and the casing guide member 30 so as to be rotatable while supporting the planet gears 22A and 22B and the planetary gears 22A and 22B are fixed.
  • a fixing portion 2 and a bolt 84 disposed in the fixing portion 2 and a groove 80 is formed in the first carrier member 24, and the bolt 84 reaches the inside of the groove 80. .
  • the first carrier member 24 is fixed to the fixed portion 2 by a bolt 54, and the upper bolt 84 is disposed on the opposite side of the bolt 54 with respect to the rotation center axis C of the casing main member 28. Therefore, the movement at the time of the fall start of the reduction gear 4 centering on the volt
  • a plurality of bolts 84 are provided and are arranged in the circumferential direction. Therefore, the reduction gear 4 is supported by each bolt 84 from various directions when the bolt 54 is broken, and the reduction gear 4 is more reliably prevented from dropping.
  • the recess into which the tip of each bolt 84 is inserted is a circumferential groove 80. Therefore, the groove 80 can be formed with a lathe at low cost, and the addition of the bolt 84 can be easily performed by omitting the new formation of the recess by using the groove 80.
  • the retaining members of the speed reducer 4 are the respective bolts 84, and the bolt holes 82 for inserting the respective bolts 84 are provided in the fixing portion 2. Therefore, the retaining member can be easily attached and detached, and the retaining member can be easily manufactured and maintained. Further, a gap is provided between each bolt 84 and the groove 80. Therefore, the impact with respect to the 1st carrier member 24 is not transmitted directly to each volt
  • the number of bolts 84 as a retaining member may be three or less (including one), or may be five or more. Further, the plurality of bolts 84 may be arranged at unequal intervals in the circumferential direction, or may not be arranged on the same virtual circle.
  • the retaining member may be a pin that is press-fitted into the pin hole, or may be a protrusion formed on the inner surface of the fixed portion case 10.
  • the recess may be a hole or the like that is opened at each opposed portion of the tip of the bolt 84. A part or all of the bolts 84 may be arranged so as to contact the groove 80 without a gap.
  • the bolt 84 may be fixed to the first carrier member 24, and the groove 80 in which the bolt 84 enters may be formed in the fixed portion case 10.
  • the first carrier member 24 may be disposed outside the fixed part case 10.
  • the number of the planetary gears 22A and 22B, the number of the eccentric portions 34A and 34B, or the eccentric angle may be increased or decreased.
  • the number and type of various bearings can be changed in various ways, such as increasing or decreasing the number of bearings 14 or using needle bearings 40A and 40B as ball bearings.
  • the casing main member 28 and its internal teeth 60A and 60B are separated from each other, the casing main member 28 and the casing guide member 30 are integrally formed, the cover 62 and its bolt 64 are omitted, the shaft
  • the configuration of various members may be variously changed such that 12 is not used and a pinion is formed on the motor shaft.
  • the configuration of the speed reducer 4 is not limited to the above.
  • a reduction gear of a casing rotation type having a sun gear, a plurality of planetary gears (inscribed members) meshing with the sun gear, an internal gear meshing with the sun gears, and a connecting member that rotatably holds the planetary gears. May be.
  • Reduction gear 1 ... Reduction gear, 2 ... Fixing part, 4 ... Reduction gear, 22A, 22B ... Planetary gear (inscribed member), 24 ... First carrier member (part of carrier member), 26 ... 2 Carrier member (a part of carrier member), 28 ..Case main member (a part of casing), 30 ..Case guide member (a part of casing), 38 A, 38 B. Outer surface), 54... Bolt (fastening member), 60 A, 60 B... Internal toothed portion (inner surface of casing), 80.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)

Abstract

Le problème décrit par la présente invention est de produire un dispositif de réduction de vitesse grâce auquel on peut éviter à l'ensemble du réducteur de vitesse de tomber d'une section de fixation. La solution selon la présente invention concerne un dispositif de réduction de vitesse équipé : d'un élément principal 28 de carter comportant des sections de dents internes cylindriques 60A, 60B, et d'un élément de guidage 30 de carter ; de satellites 22A, 22B comportant des sections de dents externes 38A, 38B pour s'engrener avec les sections de dents internes 60A, 60B de l'élément principal 28 de carter ; d'un premier élément porteur 24 et d'un second élément porteur 26 pour supporter les satellites 22A, 22B et supporter en rotation l'élément principal 28 de carter et l'élément de guidage 30 de carter ; d'une section de fixation 2 sur laquelle est fixé le premier élément porteur 24 ; et de boulons 84 disposés sur la section de fixation 2. Une rainure 80 est formée dans le premier élément porteur 24, et les boulons 84 s'étendent vers l'intérieur de la rainure 80.
PCT/JP2018/009494 2017-03-17 2018-03-12 Dispositif de réduction de vitesse Ceased WO2018168765A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201880010399.8A CN110268180B (zh) 2017-03-17 2018-03-12 减速装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-053275 2017-03-17
JP2017053275A JP6756649B2 (ja) 2017-03-17 2017-03-17 減速装置

Publications (1)

Publication Number Publication Date
WO2018168765A1 true WO2018168765A1 (fr) 2018-09-20

Family

ID=63523274

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/009494 Ceased WO2018168765A1 (fr) 2017-03-17 2018-03-12 Dispositif de réduction de vitesse

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Country Link
JP (1) JP6756649B2 (fr)
CN (1) CN110268180B (fr)
WO (1) WO2018168765A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7737281B2 (ja) * 2021-05-20 2025-09-10 ナブテスコ株式会社 脱落防止機能付き変速機

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004138094A (ja) * 2002-10-15 2004-05-13 Sumitomo Heavy Ind Ltd 減速機
JP2010156430A (ja) * 2008-12-29 2010-07-15 Sumitomo Heavy Ind Ltd 減速装置
JP2010216551A (ja) * 2009-03-16 2010-09-30 Sumitomo Heavy Ind Ltd 減速装置
JP2016194324A (ja) * 2015-03-31 2016-11-17 住友重機械工業株式会社 歯車装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW334500B (en) * 1994-06-16 1998-06-21 Sumitomo Heavy Industries Series of geared motor
JP2001289314A (ja) * 2000-04-03 2001-10-19 Suzuki Motor Corp 変速機ケース結合部構造
JP3935033B2 (ja) * 2002-09-06 2007-06-20 住友重機械工業株式会社 架台付の減速機のシリーズ
JP2009287634A (ja) * 2008-05-28 2009-12-10 Nabtesco Corp 歯車伝動装置
JP2010156530A (ja) * 2008-07-08 2010-07-15 Panasonic Corp 食品貯蔵庫
WO2015194058A1 (fr) * 2014-06-17 2015-12-23 Ｊｈｌ株式会社 Dispositif de génération d'énergie

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004138094A (ja) * 2002-10-15 2004-05-13 Sumitomo Heavy Ind Ltd 減速機
JP2010156430A (ja) * 2008-12-29 2010-07-15 Sumitomo Heavy Ind Ltd 減速装置
JP2010216551A (ja) * 2009-03-16 2010-09-30 Sumitomo Heavy Ind Ltd 減速装置
JP2016194324A (ja) * 2015-03-31 2016-11-17 住友重機械工業株式会社 歯車装置

Also Published As

Publication number Publication date
JP6756649B2 (ja) 2020-09-16
JP2018155345A (ja) 2018-10-04
CN110268180A (zh) 2019-09-20
CN110268180B (zh) 2023-03-10

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