-
公开(公告)号：US12292106B2
公开(公告)日：2025-05-06
申请号：US18699493
申请日：2021-11-05
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Masaru Kobayashi
IPC: F16H49/00
Abstract: A strain wave gearing includes a wave generator that creates a state in which a flexible externally toothed gear is flexed into a non-circular shape and partially meshes with a rigid internally toothed gear, and that includes a wave plug having a non-circular outer peripheral surface and a wave bearing attached to the non-circular outer peripheral surface of the wave plug. The wave bearing includes an outer ring having an inner peripheral surface and an outer-ring-side raceway surface formed on the inner peripheral surface, an inner ring having an outer peripheral surface and an inner-ring-side raceway surface formed on the outer peripheral surface, and a plurality of rolling elements rotatably inserted between the outer-ring-side raceway surface and the inner-ring-side raceway surface.
-
公开(公告)号：US12234903B2
公开(公告)日：2025-02-25
申请号：US18576392
申请日：2021-09-21
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Masaru Kobayashi
Abstract: In the interior of a device housing of a strain wave gearing, a detection mechanism is incorporated at a site on the outer peripheral side of a hub of a wave generator. The hub of the wave generator is linked to a motor shaft so that axial force does not act thereon. The detection mechanism detects minute displacements in the axial direction that occur in the hub of the wave generator due to thrust acting on the wave generator. Thrust acting on the wave generator is obtained on the basis of the detected minute displacements. With this strain wave gearing in which the detection mechanism is incorporated, operation control that is responsive to sensed thrust is possible through the use of thrust information during operation.
-
公开(公告)号：US11841071B2
公开(公告)日：2023-12-12
申请号：US17630351
申请日：2019-09-27
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Masaru Kobayashi
CPC classification number: F16H49/001 , F16H55/0833
Abstract: The flat strain wave gearing is provided with an axially arranged rigid gear, flexible gear and wave generator. The flexible gear forms a flat truncated cone shape, has a tooth formation portion connected via a bellows-shaped cross-sectional diaphragm to a rigid boss which is an output shaft linking part. The flat strain wave gearing can ensure axial flexibility of the tooth formation portion, and can enable teeth of the flexible gear to mesh favorably with teeth of the rigid gear in the axial direction in each position in the tooth trace direction. Local bias of the load torque in the meshing portion in the tooth formation portion can also be suppressed.
-
公开(公告)号：US11035452B2
公开(公告)日：2021-06-15
申请号：US16305598
申请日：2016-07-30
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Masaru Kobayashi
Abstract: A wave bearing of a wave generator of a strain wave gearing is provided with steel or stainless steel cylindrical hollow rollers between an inner-race-side raceway surface and an outer-race-side raceway surface, the hollow rollers serving as rolling elements. The ratio Di/Do of the inner diameter Di to the outer diameter Do of the hollow rollers is set to 0.95 or more. The relative radius of curvature of hollow rollers that have been flexed into an ellipsoidal shape increases with respect to the inner-race raceway surface and the outer-race raceway surface with which the hollow rollers are in contact, and the Hertz maximum contact stress is reduced. The hardness of the hollow rollers, the inner-race raceway surface, and the outer-race raceway surface can be reduced.
-
公开(公告)号：US10718420B2
公开(公告)日：2020-07-21
申请号：US15541390
申请日：2015-01-08
Applicant: Harmonic Drive Systems Inc.
Inventor： Masaru Kobayashi , Tatsuro Hoshina
Abstract: A strain wave gearing has a wave generator provided with a plug and a roller bearing. The roller bearing is provided with flange plates fixed to both sides of the plug, and outer circumferential edge portions of the flange plates protrude outwardly from a plug outer circumferential surface so as to locate on both sides, in an axial line direction, of the raceway of rollers. The movements of the rollers in the axial line direction are constrained by the outer circumferential edge portions. The movement of retainer in the axial line direction is constrained by engaging with the rollers. The movement of each component part of the roller bearing in the axial line direction can be constrained without using additional components.
-
Patent Agency Ranking
公开(公告)号：US10655721B2
公开(公告)日：2020-05-19
申请号：US15542872
申请日：2015-01-13
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Masaru Kobayashi
Abstract: An internal contact part of a wave generator of a strain wave gearing, a contact part between an externally toothed gear and the wave generator, and tooth surface parts are lubricated by a lubricating fine powder. When the strain wave gearing is in operation, the lubricating fine powder is supplied to the internal contact part and the contact part by a first powder guide that rotates integrally with the wave generator. Having passed through these sections, the lubricating fine powder is supplied to the tooth surface parts by a second powder guide that rotates integrally with the wave generator. Each component part can be reliably lubricated regardless of the orientation of the strain wave gearing during operation.
-
公开(公告)号：US10557539B2
公开(公告)日：2020-02-11
申请号：US15519677
申请日：2014-11-21
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Masaru Kobayashi
Abstract: A wave generator of a strain wave gearing has a rigid plug provided with an elliptical outer peripheral surface, and a roller bearing. The outer peripheral surface of the plug is provided with a major-axis-side outer-peripheral surface portion formed at a major axis position L1, and a minor-axis-side outer-peripheral surface portion formed at a minor axis position L2. The major-axis-side outer-peripheral surface portion is a tapered surface that is tapered along a center axis line, and the minor-axis-side outer-peripheral surface portion is an inverted tapered surface that is tapered in the opposite direction. An externally toothed gear can be supported and flexed into an elliptical shape without partial contact by using the wave generator in which the roller bearing is used.
-
公开(公告)号：US10132398B2
公开(公告)日：2018-11-20
申请号：US15126329
申请日：2014-03-31
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Masaru Kobayashi , Yoshihide Kiyosawa
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：US10352426B2
公开(公告)日：2019-07-16
申请号：US15033815
申请日：2015-05-29
Applicant: Harmonic Drive Systems Inc.
Inventor： Masaru Kobayashi , Tatsuro Hoshina
Abstract: A flat strain wave gearing (1) has a mechanism for preventing a flexible externally toothed gear (4) from moving in the direction of the device center axis (1a) with respect to a rigid internally toothed gears (2, 3). The mechanism has an inner-peripheral groove (11) formed on inner teeth (3a) of the internally toothed gear (3), an outer-peripheral groove (12) formed on outer teeth (4a) of the externally toothed gear (4), and a flexible ring (13) mounted between the inner-peripheral groove (11) and the outer-peripheral groove (12). The ring (13) is engageable with groove inner-peripheral surfaces (11a, 11b, 12a, 12b), from the direction of the device center axis (1a), at meshing positions of the both gears (2, 4).
-
公开(公告)号：US09874273B2
公开(公告)日：2018-01-23
申请号：US14611304
申请日：2015-02-02
Applicant: Harmonic Drive Systems Inc.
Inventor： Masaru Kobayashi , Daisuke Orii
IPC: C21D9/32 , C21D1/22 , F16H55/06 , F16H55/08 , C21D6/00 , C21D8/00 , C22C38/02 , C22C38/04 , C22C38/22 , C22C38/34 , C22C38/38 , C21D7/06 , F16H49/00
CPC classification number: F16H55/0833 , C21D1/22 , C21D6/002 , C21D6/005 , C21D6/008 , C21D7/06 , C21D8/005 , C21D9/32 , C21D2211/008 , C22C38/02 , C22C38/04 , C22C38/22 , C22C38/34 , C22C38/38 , F16H55/06 , F16H2049/003
Abstract: A method for manufacturing a flexible externally toothed gear includes: a first step (ST1) for producing a primary molded article by performing near-net-shape plastic working on a material comprising a nickel-free low-alloy steel having a silicon content of 1.45-1.5 wt %; a second step (ST2) for martempering the primary molded article; a third step (ST3) for producing a secondary molded article from the primary molded article; and a fourth step (ST4) for shot-peening the secondary molded article to change the surface portions of the tooth part and other parts to martensite. A flexible externally toothed gear can be obtained in which the surface hardness is kept within a prescribed range and the fatigue strength and abrasion resistance are high.
-
-
-
-
-
-
-
-
-
Search Results
33
records
(took 0.015 seconds)
