Toyota Jidosha Kogyo Kabushiki Kaisha

Toyota Jidosha Kabushiki Kaisha

Taiho Kogyo Co., Ltd.

Toyota Motor Corporation

Yaskawa Electric Mfg. Co. Ltd.

Nobuo Fukuma

Yoshito Kato

Hideyuki Matsubara

Yoshito Katou

Kouji Nogami

Kunio Hayashi

Tatsuhiko Fukuoka

Akira Matsui

Kenichiro Futamura

Eizi Asada

Hisaji Nakao

Kimimasa Murayama

Yoshihiro Tokudome

Tadahiro Takasu

Kenichi Kawai

Takao Yoneda

Takao Terui

Hisayasu Hasegawa

Soldering material essentially consists of 20-50% of Pb, 0.5-less than 1% of Sb, 0.1-5% of In, and balance of Sn. Such material is suitable to solder electronic parts exposed to temperature variation and mechanical vibration.

Pb-Sn-Sb-In solder alloy

A method of making valve sleeves used for controlling the flow of hydraulic fluid in devices, such as power steering units in motorized vehicle, and the product of the utilized method. The method utilizes a grooving male die which forms a groove on an interior surface of a valve sleeve.

Method of making valve sleeves

An apparatus for controlling a DC motor driven screw feed which moves the table of a machine tool into prescribed positions including a plurality of limit switches which detect the position of the table, a rate change control circuit which receives signals from the limit switches and changes the rate of revolution of the DC motor when the table has reached prescribed rate change positions and a current limiting circuit which supplies the DC motor with a prescribed constant current and keeps the output torque of the DC motor at a prescribed level when the table has reached a prescribed dwell position.

Device for controlling the feed of machine tools

An improved feed for a D.C. motor driven feed including a feed screw and nut which moves the table of a machine tool through predetermined positions in accordance with orders to change the rate of feed. The improved feed includes a power damping circuit, a switching circuit for electrically coupling the power damping circuit for a predetermined length of time to the D.C. motor whenever there is an order to change the rate of feed, thrust bearings provided in the D.C. motor whereby loads applied to the table are borne by the thrust bears and a cylindrical protective cover coupled to the nut and covering the feed screw such that the bottom inside surface of the cover is in relative near proximity to the feed screw and the top inside surface of the cover is in relative far proximity to the feed screw.

Method and apparatus for controlling the feed of machine tools

A friction speed change gearing of the type comprising a plurality of planetary cylindrical rollers which make a planetary movement along an annular space defined by inner and outer races and a spider member engaged among the rollers in a sliding contact therewith, wherein flexible bearing shoes are provided in the spider member for improving the lubricating oil film maintained between the engaging surfaces of the roller and the spider member.

Planetary gearing with flexible friction surfaces

A protective means for a feeder of machinery having means for transmitting control signal formed from the differential between a predetermined revolution speed and an actual revolution speed of a DC-motor for driving the feeder, and a means to control current in the DC-motor according to said control signal, thereby protecting the motor against excessive current.

Protective means for feeder of machinery with DC-motor

A directional switching device for a feeder in a machine tool driven by a direct current motor. The armature circuit of the direct current motor is provided with a relay contact circuit for switching the forward and backward movements of the conveyor. The relay contact circuit is controlled by signals from a sequencing circuit.

Switching device for feeder in machine tools

A method of manufacturing a friction speed change gearing of the type which comprises a housing, inner and outer races, a plurality of cylindrical planetary rollers mounted between the inner and outer races subject to elastic deformation, and a spider member engaging the planetary rollers, wherein the method is characterized by forming a first assembly including the inner race and the planetary rollers and a second assembly including the housing and the outer race, forming a temperature differential between the two assemblies, inserting the first assembly into the outer race in the second assembly and removing the temperature differentiation so that the rollers are uniformly compressed due to a thermal deformation which occurs when the temperature differentiation has been removed.

Method for manufacturing a friction speed change gearing

In the cam-controlled 'sizematic' type grinding method and apparatus therefor, a novel 'in process' 'gagematic' type measuring means has been introduced so as to maintain the strong points of the former and develop a new grinding method and apparatus capable of securing high precision and fine surface finish of workpieces at the same time. For attaining the above purpose (a) a novel process of comparing the timing of signals of reaching the target final dimension and lapsing of the minimum required 'spark-out' grind time and (b) a compensation process for wear of the dresser point are introduced.

Cam-controlled grinding machine

In the cam-controlled 'sizematic' type grinding method and apparatus therefor, a novel 'in process' 'gagematic' type measuring means has been introduced so as to maintain the strong points of the former and develop a new grinding method and apparatus capable of securing high precision and fine surface finish of workpieces at the same time. For attaining the above purpose (a) a novel process of comparing the timing of signals of reaching the target final dimension and lapsing of the minimum required 'sparkout' grind time and (b) a compensation process for wear of the dresser point are introduced.

Cam-controlled grinding method

An automatic quality control system for a machine which measures workpieces processed by the machine. An estimated value to be obtained from an unprocessed workpiece depending upon information obtained from previously processed workpieces is calculated and is compared with a predetermined control limit. An instruction signal is generated when the estimated value is beyond the control limit to indicate a need for adjustment of the machine.

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Toyota, Japan

Nobuo Fukuma