Toyama-shi, Japan
Toyama-shi, Japan

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Patent
Daihen Corporation and Nachi Fujikoshi Corporation | Date: 2010-12-01

A robot control system has a portable operating device TP and a robot control device RC. The portable operating device TP is actuated by a rechargeable secondary battery and used to operate a robot R. The robot control device RC is capable of wireless communication with the portable operating device TP and performs automatic operation of the robot R based on teaching data provided by the portable operating device TP. The robot control system causes an emergency stop of the robot R when the wireless communication between the portable operating device TP and the robot control device RC is interrupted. The robot control system further includes a charging device CU, a connection monitoring section 12, and an automatic operation continuing section 11. The charging device CU charges the secondary battery by electrically connecting the portable operating device TP to the robot control device RC. The connection monitoring section 12 monitors whether connection between the portable operating device TP and the robot control device RC through the charging means is established. Even if it is detected that the aforementioned connection is not established when the robot R is in automatic operation, the automatic operation continuing section 11 ends wireless communication without causing an emergency stop of the robot R and continues automatic operation of the robot R solely through the robot control system RC.


Shiozawa K.,University of Toyama | Murai M.,Nissan Chemical Industries Ltd. | Shimatani Y.,Nachi Fujikoshi Corporation | Yoshimoto T.,Nachi Fujikoshi Corporation
International Journal of Fatigue | Year: 2010

Transition of the fatigue failure mode in very high cycle regime was investigated based on the experimental results obtained under a fully reversed tension-compression test in air at room temperature using a hourglass shaped specimen of a Ni-Cr-Mo low-alloy steel, JIS SNCM439. A clear duplex S-N curve existed in an emery-polished specimen as a result of the change from surface-induced failure to internal-induced failure with GBF area. On the other hand, a smooth and continuous S-N curve appeared in a specimen treated by a shot-peening, even though the failure mode changed depending on applied stress amplitude level. An internal-induced failure without GBF area was observed on the fracture surface of the shot-peened specimen in addition to the above two failure modes. Stress amplitude for the transition of the failure mode was explained by considering an effect of compressive residual stress in the surface layer, and competing subsurface crack growth rate with surface one. A map for transition of failure mode was proposed through the experimental and theoretical investigation. © 2009 Elsevier Ltd. All rights reserved.


Patent
NACHI FUJIKOSHI Corporation and Toyota Jidosha Kabushiki Kaisha | Date: 2013-06-27

There is provided a manufacturing process of a battery equipped with a case and an electrode body having a positive electrode, a negative electrode and separators. The electrode body has an upper R portion and the respective separators have surplus portions. The case has an accommodation portion that has an opening in an upper face thereof and accommodates the electrode body, and a lid portion that closes up the opening in the upper face of the accommodation portion.


Patent
NACHI FUJIKOSHI Corporation | Date: 2012-05-23

There is provided a vacuum degreasing and cleaning apparatus, including a cleaning chamber having an injector and a sprayer that eject a solvent to an object to be cleaned, a plurality of storage tanks that store the solvent, a distiller that distills the solvent in the storage tank, and a replenisher tank that stores the solvent distilled by the distiller, wherein a heating means is provided in the inside of the sprayer in a nesting way. There is also provided a vacuum degreasing and cleaning method using the aforementioned vacuum degreasing and cleaning apparatus, wherein the solvent is pressurized and supplied to the inside of the sprayer, heated to a temperature not lower than a saturation temperature in the cleaning chamber under a reduced pressure, and thereafter sprayed in the cleaning chamber under the reduced pressure.


Patent
NACHI FUJIKOSHI Corporation | Date: 2012-01-10

An industrial robot comprises an arm which includes a proximal portion rotatably supported on a horizontal rotation shaft of a frame in a cantilever state, a cylindrical case portion formed from the proximal portion side to a distal end of the arm to have an opening portion on the proximal portion side, and an arm distal end portion. The industrial robot also comprises a balancer device which includes a rod, and a cylinder 3a in which the rod is reciprocated. An engagement portion at a distal end of the rod, and a rear end of the cylinder are rotatably supported between a pair of first support portions of the frame, and between a pair of second support portions inside the cylindrical case portion, respectively, so that the cylindrical case portion and the balancer device do not interfere with each other in an extent of rotation of the arm.


Patent
NACHI FUJIKOSHI Corporation | Date: 2011-11-16

A drill capable of suppressing inter-layer peeling (delamination) while keeping hole diameter accuracy even if the number of holed to be worked increases is provided. The drill includes a first flank which has a ridge line forming a cutting edge, a second flank which is adjacent to the first flank and has a ridge line forming a land portion, and a third flank which is adjacent to the first flank and has a ridge line forming a chisel edge. The drill further includes a fourth flank which is surrounded by a ridge line forming the first flank, a ridge line forming the third flank, and a trough line forming the second flank


Patent
Nachi Fujikoshi Corporation | Date: 2012-11-28

There is provided a vacuum degreasing and cleaning apparatus (1), including a cleaning chamber (4) having an injector (2a, 2b) and a sprayer (3) that eject a solvent to an object to be cleaned, a plurality of storage tanks (5a-5c) that store the solvent, a distiller (6) that distills the solvent in the storage tanks, and a replenisher tank (7) that stores the solvent distilled by the distiller, wherein a heating means (30) is provided in the inside of the sprayer in a nesting way. There is also provided a vacuum degreasing and cleaning method using the aforementioned vacuum degreasing and cleaning apparatus, wherein the solvent is pressurized and supplied to the inside of the sprayer, heated to a temperature not lower than a saturation temperature in the cleaning chamber under a reduced pressure, and thereafter sprayed in the cleaning chamber under the reduced pressure.


Patent
Nachi Fujikoshi Corporation | Date: 2013-06-27

In a melt molding method of germanium, the germanium which is brought into a molten state is sealed in molding dies in an inert gas atmosphere. The molding dies are temperature-controlled from the outside. While gradually cooling the molding dies at a portion or a plurality of portions thereof up to the whole, the germanium is gradually solidified from a side of the portion or sides of the plurality of portions up to the whole. An external ambient temperature of the molding dies is controlled to decrease gradually while ensuring a temperature below a germanium melting point temperature but higher than an inner temperature of the molding die which is cooled. After solidification of the germanium is completed, cooling of the molding dies is continued, and the external ambient temperature is decreased to mold the germanium.


Patent
Nachi Fujikoshi Corporation | Date: 2016-11-23

In order to prevent deterioration of sliding performance of a piston and center core misalignment of the piston when the piston moves for its stroke, there is provided an air bypass valve 10 including: a coil casing 12 in which a coil 25 is accommodated; a pilot valve section 13 covered by the coil casing 12 and having a movable iron core 27 inserted in the coil 25; and a piston section 14 fitted in the coil casing 12 and having a piston 16 with a hole 35. The air bypass valve 10 further includes a protrusion provided at an edge of an opening portion of the piston casing 15 which constitutes the piston section 14.


Patent
NACHI FUJIKOSHI Corporation | Date: 2015-02-27

A cable drawn from a lower arm of a robot into a first upper arm part of an upper arm is further drawn out to an exterior space of the robot through a first hole of a second upper arm part. The cable is drawn in contact with a sidewall part of the second upper arm part, and is disposed in a wrist arrangement portion through a second hole. A slack part is formed taking account of a length of the cable pulled by a wrist when the wrist pivots in the wrist arrangement portion, and the cable is drawn to a tool through a through hole of the wrist.

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