公开(公告)号：US20230358304A1

公开(公告)日：2023-11-09

申请号：US17639630

申请日：2020-10-30

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Norio SHIROKOSHI ,  Satoshi KISHI ,  Yoshihide KIYOSAWA

IPC: F16H49/00

CPC classification number: F16H49/001 ,  F16H2049/003

Abstract: A three-dimensional tooth profile of internal teeth in a strain wave gearing is a basic internal-teeth tooth profile at an internal-teeth outer end, and is a reduced tooth profile, in which the basic internal-teeth tooth profile is proportionally reduced only in the lateral direction, at other tooth-trace-direction positions. A three-dimensional tooth profile of external teeth is a basic external-teeth tooth profile at an external-teeth outer end, and is an increased tooth profile, in which the basic external-teeth tooth profile is proportionally increased only in the lateral direction, at other tooth-trace-direction positions. Tooth cutting process becomes easier than when only the external teeth employ a three-dimensional tooth profile. Since the tooth profiles, which are proportionally reduced and increased only in the lateral direction along the tooth trace direction, are employed, it is further easier in tooth cutting process.

公开(公告)号：US20190203819A1

公开(公告)日：2019-07-04

申请号：US15322640

申请日：2015-07-03

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Jun HANDA ,  Yoshihide KIYOSAWA ,  Noboru TAKIZAWA ,  Xin Yue ZHANG

IPC: F16H49/00 ,  F16H55/08 ,  F16H1/32

CPC classification number: F16H49/001 ,  F16H1/32 ,  F16H55/08 ,  F16H55/0833

Abstract: An externally toothed gear of a dual-type strain wave gearing is provided with first and second external teeth having different teeth numbers, and a gap formed between these teeth as a cutter clearance area for tooth cutters. The maximum width L1 of the gap is 0.1 to 0.3 times the width L of the externally toothed gear. The depth from the tooth top land of the first external teeth to the deepest part of the gap is 0.9 to 1.3 times the depth of the first external teeth, and the depth from the tooth top land of the second external teeth to the deepest part of the gap is 0.9 to 1.3 times the depth of the second external teeth. The tooth bottom fatigue strength of the externally toothed gear provided with differing numbers of first and second external teeth is increased.

公开(公告)号：US20170198802A1

公开(公告)日：2017-07-13

申请号：US15327750

申请日：2015-07-03

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Yoshihide KIYOSAWA ,  Jun HANDA ,  Xin Yue ZHANG ,  Noboru TAKIZAWA

IPC: F16H49/00 ,  F16C19/06

CPC classification number: F16H49/001 ,  F16C19/06 ,  F16C2370/00 ,  F16H1/32 ,  F16H2049/003

Abstract: An externally toothed gear of a dual-type strain wave gearing is provided with first and second external teeth having different teeth numbers. The first and second external teeth are flexed by a wave generator by the same flexing amount, into an ellipsoidal shape. The average pressure angle of main-tooth-surface sections of tooth profiles of the first external teeth having a low teeth number is less acute than the average pressure angle of main-tooth-surface sections of tooth profiles of the second external teeth having a high teeth number. Accordingly, a dual-type strain wave gearing can be achieved with which the first and second external teeth having different teeth numbers can be suitably flexed to form excellent meshing states with respective internally toothed gears.

公开(公告)号：US20170082187A1

公开(公告)日：2017-03-23

申请号：US15126329

申请日：2014-03-31

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Masaru KOBAYASHI ,  Yoshihide KIYOSAWA

IPC: F16H49/00 ,  B23P15/14 ,  F16C33/58

CPC classification number: F16H49/001 ,  B23P15/14 ,  B23P2700/12 ,  F16C19/06 ,  F16C19/362 ,  F16C33/581 ,  F16C2361/61

Abstract: A wave plug of a wave generator of a wave gear device includes: a metallic outer hollow body with an elliptical wave plug outer circumferential surface formed thereon; a metallic inner hollow body with a wave plug inner circumferential surface formed thereon; and an intermediate hollow body sandwiched between the outer hollow body and the inner hollow body. The intermediate hollow body includes CFRP layers. It is possible to implement a light wave plug in which a big hollow portion can be formed while assuring a required rigidity. Using the wave plug makes it possible to implement a light wave gear device which allows jumping to occur at a high load torque and which includes a big hollow portion.

公开(公告)号：US20160201783A1

公开(公告)日：2016-07-14

申请号：US14901237

申请日：2013-07-04

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Sotaro MIYAKE ,  Yoshihide KIYOSAWA

IPC: F16H49/00

CPC classification number: F16H49/001 ,  F16H2049/003

Abstract: A press plate is tacked to a boss of a cup-shaped flexible externally toothed gear of a wave gear device unit. A second arm as a driven member is attached by a fastening bolt to an end surface on an outer side of an output flange of the wave gear device unit. The fastening bolt is screwed into and secured in a tap hole of the press plate from each bolt insertion hole of the second arm, via a flange-side bolt insertion hole and a boss-side bolt insertion hole. A fastening structure can be achieved in which a driven member is fastened to a wave gear device unit in which holes are easily machined into the output flange, and only a few fastening bolts are needed to fasten the boss, the output flange, and the driven member.

Abstract translation: 压板被固定到波齿轮装置单元的杯形柔性外齿轮的凸台上。 作为从动构件的第二臂通过紧固螺栓附接到波齿轮装置单元的输出凸缘的外侧的端面。 紧固螺栓通过法兰侧螺栓插入孔和凸起侧螺栓插入孔从第二臂的每个螺栓插入孔旋入并固定在压板的抽出孔中。 可以实现紧固结构，其中从动构件紧固到波形齿轮装置单元中，其中孔容易加工到输出法兰中，并且仅需要几个紧固螺栓来紧固凸台，输出凸缘和被驱动 会员。

公开(公告)号：US20160160985A1

公开(公告)日：2016-06-09

申请号：US14906861

申请日：2013-07-25

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Yoshitomo MIZOGUCHI ,  Yoshihide KIYOSAWA

IPC: F16H49/00

CPC classification number: F16H49/001

Abstract: A flat strain wave gearing device equipped with: a first internal gear and a second internal gear; a flexible tubular external gear; and an elliptically shaped wave generator. In the direction of a central axis, the center of support of the external teeth by the wave generator is offset, by an offset amount of Δ along the direction of the central axis, with respect to the tooth-width center of the external teeth of the external gear. By setting the offset direction and the offset amount appropriately it is possible to achieve a strain wave gearing device which is suitable in terms of the operating conditions and the mechanical characteristics of the first and second internal gears.

Abstract translation: 一种扁平应变波传动装置，配备有：第一内齿轮和第二内齿轮; 柔性管状外齿轮; 和椭圆形波发生器。 在中心轴的方向上，波发生器的外齿的支撑中心偏移量为＆Dgr; 沿着中心轴线的方向相对于外齿轮的外齿的齿宽中心。 通过适当地设定偏移方向和偏移量，可以实现适用于第一和第二内齿轮的运行条件和机械特性的应变波传动装置。

公开(公告)号：US20240255050A1

公开(公告)日：2024-08-01

申请号：US18560761

申请日：2021-07-20

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Yoshihide KIYOSAWA

IPC: F16H57/04 ,  C10M103/02 ,  C10M103/06 ,  C10M107/38 ,  C10N20/06 ,  C10N50/08 ,  F16H49/00

CPC classification number: F16H57/041 ,  C10M103/02 ,  C10M103/06 ,  C10M107/38 ,  F16H49/001 ,  F16H57/0434 ,  F16H57/048 ,  C10M2201/0413 ,  C10M2201/0613 ,  C10M2201/0653 ,  C10M2201/0663 ,  C10M2213/0623 ,  C10N2020/06 ,  C10N2050/08

Abstract: A lubrication mechanism of a strain wave gearing is disposed in an interior space of an externally toothed gear and comprises a powder-accommodating bag that stores solid lubricant powder. A diaphragm of the externally toothed gear is repeatedly deflected during the driving of the strain wave gearing. Vibration or deflection is repeatedly imparted to the powder-accommodating bag and the solid lubricant powder is discharged from a powder discharge hole formed in the powder-accommodating bag into the interior space. A site to be lubricated is lubricated with the solid lubricant powder discharged into the interior space. Harmful effects due to a large amount of the solid lubricant powder being supplied to the site to be lubricated at one time can be resolved, and a necessary amount of the solid lubricant powder can be continuously supplied to the site to be lubricated.

公开(公告)号：US20240255045A1

公开(公告)日：2024-08-01

申请号：US18560780

申请日：2021-07-21

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Yoshihide KIYOSAWA

IPC: F16H49/00 ,  F16C33/66 ,  F16H57/04

CPC classification number: F16H49/001 ,  F16C33/6696 ,  F16H57/041 ,  F16H57/045 ,  F16H57/0471 ,  F16H57/048 ,  F16C2361/61 ,  F16H2049/003

Abstract: A wave bearing of a space strain wave gearing device comprises an inner ring formed from a bearing steel, an outer ring formed from a martensitic stainless steel, and balls formed from ceramics. On the inner ring formed from a bearing steel, a ceramic coating formed by an AD method is formed as a rust-preventive coating. In the space strain wave gearing device that adopts solid lubrication (powder lubrication), it is possible to reliably prevent rust from developing on the inner ring formed from a bearing steel of the wave bearing. In a space environment where the temperature greatly changes, appropriate setting of the linear expansion coefficients of the inner ring, the outer ring, and the balls enables a change in the radial gap of the wave bearing to be suppressed to a range that does not interfere with practical use.

公开(公告)号：US20200240500A1

公开(公告)日：2020-07-30

申请号：US16754030

申请日：2017-10-31

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Yoshihide KIYOSAWA ,  Norio SHIROKOSHI

IPC: F16H49/00 ,  F16H57/021 ,  F16C17/04

Abstract: A cup-type strain wave gearing having a unit structure and having: a stationary-side part including a unit housing and an internally toothed gear; a driving-side part including an output member and an externally toothed gear; and a sliding bearing supporting the stationary-side part and the driving-side part in the radial direction and the thrust direction in a state in which relative rotation is possible. The sliding bearing has a cylindrical bushing accommodated in a radial gap, and annular bushings accommodated respectively in thrust gaps. Thus, it is possible to provide an advantageous strain wave gearing having a unit structure that is more lightweight and compact than when a rolling bearing is used.

公开(公告)号：US20200072338A1

公开(公告)日：2020-03-05

申请号：US16493111

申请日：2017-04-10

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Shunichi TEZUKA ,  Yoshihide KIYOSAWA ,  Toshimi YAMAGISHI

IPC: F16H57/04 ,  F16H1/32 ,  F16H49/00 ,  F01D25/16 ,  F01D25/18 ,  F16C33/10

Abstract: A silk hat-type strain wave gear device has a crossed roller bearing for supporting an internal gear and an external gear so as to allow relative rotation. A first gap part between the inner and outer rings of said bearing is sealed by an oil seal and a second gap part thereof is in communication with a gear-side gap part on the outside of the external gear. A bearing seal separates the second gap part from the gear-side gap part. The bearing seal prevents excessive inflow of lubricant from the gear-side gap part into the second gap part. Excess lubricant that has flowed into the bearing can flow back from the second gap part to the gear-side gap part. Excess lubricant in the bearing is prevented from leaking through the oil seal to the outside.