Sumitomo Heavy Industries, Ltd.

Hitachi, Ltd.

Jun Tamenaga

Kiyoji Minegishi

Akira Yamamoto

Yasuo Morooka

Taizo Miyazaki

Takashi Haga

Yoshitaka Shizu

Kazuyoshi Umeda

Masahiro Shimada

Takato Sugino

Kiyoji Mingishi

Teijirou Yamanaka

Noriyuki Yamasaki

Kenichi Kanemitsu

Hiroshi Watanabe

Hiroki Matsuoka

Tetsuzou Ishikawa

Kenji Matsunaga

A master machine supporting system includes a master machine in which a speed reducer is incorporated, and a server configured to store performance data of the speed reducer in association with a speed reducer ID of each speed reducer. The server transmits performance data corresponding to the speed reducer ID in response to a performance data transmission request including the speed reducer ID. The master machine receives an input of the performance data of the speed reducer incorporated in the master machine and controls an operation of the master machine based on the input performance data.

Master machine supporting system

A joint driving apparatus for a robot comprises an oscillating internally meshing reduction mechanism, a center shaft member, a ring portion, and an oil seal disposed between the ring portion and the center shaft member. The oscillating internally meshing reduction mechanism is fixed to a first member and rotates the second member relatively with respect to the first member. An output member is arranged at the side of an external gear in an axial direction so as to output a relative rotation of an internal gear with the external gear. The center shaft member is fixed to the output member, and has a shaft portion extending up to the side opposite to the external gear in the axial direction of the output member. The ring portion is integrally formed with the first member and faces to the shaft portion of the center shaft member. The oil seal is disposed between the ring portion and the shaft portion.

Joint driving apparatus for robot

A bearing structure where a plurality of bearings is disposed in line in an axial direction, the bearing structure having the plurality of bearings of which at least one set of adjacent bearings include rollers and retainers, respectively. Portions of the respective retainers of at least one set of the adjacent bearings are disposed so as to overlap each other in a radial direction.

Bearing structure and retainer of bearing

A speed reducer that can fundamentally eliminate the cause of lubricant leakage is provided. A speed reducer that reduces the speed of input rotation includes at least a first space and a second space separated by an oil seal, and the first space and the second space are each put with lubricant. A level of the lubricant put in the first space is set to be higher than a level of the lubricant put in the second space, and the level of the lubricant put in the second space is set to be at or lower the level of a lowermost oil seal among oil seals that separate the second space and the exterior of the speed reducer.

Speed reducer

To provide an oscillating internally meshing planetary gear reducer capable of realizing a low cost and a high speed reduction ratio, the oscillating internally meshing type planetary gear reducer is constituted so as to include: an input shaft provided with an input gear which is circumscribed and meshed with a pinion provided on a motor; an input shaft gear formed on the input shaft; a plurality of eccentric body shafts each provided with an eccentric body for oscillating an oscillating external gear; an eccentric body shaft gear which is formed on each eccentric body shaft; and a distributing gear which is meshed with the input shaft gear and the eccentric body shaft gear.

Oscillating internally meshing planetary gear reducer

It is an object to obtain a power transmission device capable of allowing conflicting needs to coexist rationally and effectively in accordance with a driving situation. As powertransmitting mechanisms of a power transmission device, there are provided a plurality of characteristically-differentiated internally meshing planetary gear mechanisms, each having an external gear and an internal gear having external teeth and internal teeth the difference in the number of teeth between which is slight. In this structure, at least two of the internally meshing planetary gear mechanisms are disposed in parallel on a path of power transmission, and power transmission characteristics of the two mechanisms are designed to differ from each other.

Power transmission device

An electric rotating machine has a rotor, a stator and a casing. A planetary roller mechanism constituted by a sun roller, a planet roller, a ring roller and a carrier is provided within the rotor so as to transmit the driving force of the rotor to the outside from a power shaft. Oil is sealed within the rotor or the casing. The planetary roller mechanism may be provided within the casing or at the outside of the rotor and, in this case, oil is sealed within the casing.

Electric rotating machine

A series of electric valve drive units is provided, which can set up rotational efficiency and anti-counter-rotating function of a valve. In a series of electric valve drive units which can drive a valve body via reduction gears, at least one gear mechanism of the reduction gears is provided with an eccentric wobbling inscribed gear type of a planetary gear mechanism which has an input shaft, an external gear eccentrically and wobbly rotating about the input shaft, an internal gear engaged with the external gear, and a carrier absorbing a wobbling ingredient of the external gear. At least two types of valve drive units are supplied, one of which places prime importance on the anti-counter-rotating function, and the other places prime importance on the rotational efficiency.

Valve drive unit and series thereof

A series of motors with speed reducers which can meet user demands for reduction ratios or requests for the types of speed reducers with flexibility and reliability and can lower noise and vibration level. When a plurality of types of speed reducers are combined with motors to make arbitrary motors with speed reducers selectable, a plurality of simple planetary roller unitseach including a sun roller, planetary rollers, and a ring rollerare provided. The plurality of simple planetary roller unitsare selected and coupled to coversaround the output shafts of the motors to make a plurality of medium-speed motor groups SMC configurable. The plurality of types of speed reducers are selectable and connectable to medium-speed motors of the same size through a carrierfor synchronizing with the revolution component of the planetary rollers

Series of motors with speed reducers

A compact conveyor drive system which prevents resonance-induced noise and vibration caused by a polygonal motion observed in transmission gearing. The conveyor belt of the conveyor is driven through a chain trained over a driven sprocket mounted to the shaft of a drum and a drive sprocket on the side of a motor. The drive system is a motor built-in reducer, and a simple planetary roller mechanism is employed for the reducer. This enables the diameter of the sprockets to be made smaller. The motor generates lower vibration, while providing sufficient torque.

Conveyor drive system and motor built-in reducer therefor

A conveyor roller drive device is provided to mechanically prevent conveyed goods from falling down on a conveyor system. The conveyor roller drive device includes a power generator for generating rotational power and a coupling portion which is coupled to a conveyor roller. A traction roller transmission mechanism is disposed in the rotational power transmission path between the power generator and the coupling portion. The traction roller transmission mechanism includes a sun roller, planetary rollers disposed on the periphery of the sun roller to roll in contact with the sun roller, a ring roller for allowing the planetary rollers to roll in contact with the inner periphery surface of the ring roller, and a carrier being in phase with the revolution component of the planetary rollers. Any one of the sun roller, the ring roller, and the carrier is employed as an input element for receiving rotational power, another one employed as an output element for outputting the rotational power, and the remaining one employed as a fixed element.

Conveyor roller drive device and drive roller assembly

A belt-type door opening and closing drive apparatus is provided, which can reduce the noise and dimensions thereof and make full use of the mechanical safety function in the event of an accident. The belt-type door opening and closing drive apparatus allows the output of a motor unit to drive a belt (timing belt), thereby opening and closing the door of an elevator cage or the like. Between the motor unit and the timing belt, interposed are planetary roller mechanisms for transmitting power by the mutual rotation of sun rollers, a plurality of planetary rollers supported rotatably by carriers and circumscribing the sun rollers, and ring rollers inscribed by the planetary rollers. The planetary roller mechanism receives the output from the motor unit and the output from the planetary roller mechanism is transmitted to the timing belt.

Belt-type door opening and closing drive apparatus

A geared motor in which user needs for change gear ratios are met with flexibility and reliability, and an increase in noise is suppressed. The geared motor comprises a motor unit and a change gear unit for transmitting rotational power from this motor unit in combination. A simple planetary roller unit including a simple planetary roller mechanism and a casing for accommodating this simple planetary roller mechanism is interposed between the change gear unit and the motor unit. The simple planetary roller mechanism has a sun roller, planetary rollers, and a ring roller. Flange portions spreading outward in the radial directions of the sun roller are formed on both axial ends of the casing. One of the flange portions is coupled to the motor unit, and the other is to the change gear unit. Moreover, the geared motor is configured so that rotational power from the motor unit is transmitted to the change gear unit through the simple planetary roller unit.

Geared motor and geared motor series

A frictional transmission apparatus comprising a simple planetary roller mechanism and a brake mechanism, the simple planetary roller mechanism having friction rollers including a sun roller, a planetary roller, and a ring roller. Static friction torque Y obtainable from the brake mechanism is set to fall within the range of 0.1Xd<Y<0.7Xd, where Xd is the value of test torque at which any of the friction rollers starts to make sliding rotations when the test torque is input in gradually increasing values to the sun roller with a carrier and the ring roller fixed stationary. Besides, a squeezing force from the ring roller is set so that Xd, critical test torque, falls within the range of 1.4-10.0 times static friction torque Y of the brake mechanism. The static friction torque Y and the critical test torque Xd are otherwise set to satisfy Y<Xd, as well as dynamic friction torque Ys obtainable from the brake mechanism at a rated revolution speed and limit transmission toque Xs of the simple planetary roller mechanism with the sun roller rotating at the rated revolution speed are set to satisfy 0.65Ys<Xs <3.4Ys.

Frictional planetary roller mechanism and brake

A geared motor comprising a reduction gear unit of oscillating internal meshing planetary gear structure type and a motor unit coupled to each other, the reduction gear unit having a first shaft and a second shaft located on its center axis L, external gears and being fitted on the outer periphery of the first shaft so as to be capable of oscillating rotations, an internal gear with which the external gears mesh internally being provided concentrically with the first shaft, the second shaft being coupled to the external gears via means for extracting the rotational components of the external gears. A simple planetary roller mechanism for transmitting rotational power by means of the friction between rollers is interposed between the reduction gear unit and the motor unit to reduce the vibration and noise levels greatly.

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Ohbu, Japan

Jun Tamenaga