Thk Co., Ltd.

Nitta Corporation

Ryuji Furusawa

Satoshi Kashiwagura

Ayako Miyajima

Shinji Aoki

Takeki Shirai

Kaoru Hoshide

Katsuya Iida

Hiroyuki Kishi

Takuya Horie

Soshi Miyahara

Atsuhiro Tanaka

Yoshiyuki Honjo

Toshiro Tojo

Marie Horikawa

Ryunosuke Ozeki

Keisuke Nagaike

Yuki Nakamura

Toru Takahashi

Shinya Saito

Shinya Mori

Akimasa Yoshida

Mitsumasa Wada

Toshikazu Ban

Yoji Ishizaki

Kenichiro Aoki

Hiroyoshi Yasutake

Teruaki Ooka

Sho Iwashiro

Bin Zhao

Yosuke Irie

Atsushi Matsumoto

Masanori Yoshino

Hideyuki Myoga

Mihoko Miura

Ryosuke Maruki

Tetsuro Kurokawa

A guide device includes a track member and a moving member with rolling elements interposed therebetween. A lubricating path is formed in the moving member for supplying lubricant to a circulation path for the rolling elements. The lubricating path has a common path including an inlet portion that serves as a supply port for the lubricant, a first path through which grease flows, and a second path through which lubricating oil flows. A cross-sectional area of the second path is smaller than a cross-sectional area of the first path, and in the common path, a second communication portion of the second path is located closer to the inlet portion than a first communication portion of the first path. Further, the guide device includes a plug member for blocking the inlet portion of the common path, the plug member being removable and able to be moved within the common path.

Motion guidance device

A motion guide apparatus which prevents a retainer from falling-off. A motion guide apparatus includes a track member having a rolling element rolling portion; a movable member having a loaded rolling element rolling portion facing the rolling element rolling portion of the track member; a return path; and a turn-around path connected to a loaded path and the return path; a plurality of rolling elements placed in the loaded path, the return path, and the turn-around path; and a retainer configured to hold at least one of the plurality of rolling elements. Grooves into which an end of the retainer in a width direction thereof enters are formed in the loaded path, the return path, and the turn-around path. A width of the grooves in at least a part of the turn-around path and/or in the return path is greater than a width of the groove in the loaded path.

Motion guide apparatus

Provided is a diagnosis method of appropriately recognizing a state of a rolling surface of a track member of a rolling guide device or a lubrication state of rolling elements using a sensor mounted to the rolling guide device. The diagnosis method is applied to a rolling guide device including: a track member having a rolling surface extending along a longitudinal direction of the track member; and a moving member, which is assembled to the track member through intermediation of a plurality of rolling elements configured to roll on the rolling surface so that the moving member is movable along the track member, and has an endless circulation path for the rolling elements. The diagnosis method includes: detecting a moving speed of the moving member relative to the track member while detecting relative vibration displacement of the moving member relative to the track member using a vibration sensor mounted to the moving member; and diagnosing a running state of the moving member relative to the track member based on those detection results.

Method for diagnosing state of rolling guide device

A slider slidably straddling over a guide rail, an attachment plate having a square U-shape attached to an end surface of the slider and including opposite vertical frames and a horizontal frame connecting the vertical frames, and a sliding scraper fitted in a square U-shape groove of the attachment plate and including opposite vertical portions and a horizontal portion connecting the opposite vertical portions, and a groove portion that is in sliding contact with the guide rail are provided, and protrusion portions at which the vertical frames and the vertical portions are in abutment with each other are provided an open end portion of an inner side surface of each of the opposite vertical frames of the attachment plate or an end portion of an outer side surface of each of the opposite vertical portions of the sliding scraper, the end portion facing the relevant open end portion.

Attachment structure for sliding scraper, and linear guide device

A motion guide device including a hollow track base that has a rolling element rolling face formed along a longitudinal direction and has a hollow portion formed to be substantially rectangular in section along the longitudinal direction, and a moving member that has a load rolling element rolling face formed in a position facing the rolling element rolling face, the moving member being assembled movably in the longitudinal direction of the track base via a plurality of rolling elements between the rolling element rolling face and the load rolling element rolling face, wherein in the track base, a heat-treated region in which heat treatment is applied to a region including the rolling element rolling face and a non-heat-treated region to which heat treatment is not applied are formed in a section orthogonal to the longitudinal direction, and the heat-treated region is not superimposed on corner portions of the hollow portion.

Motion guide device

A cap for a motion guide apparatus which can reduce generation of a burr and can also increase the fixing force. The cap of the present invention is for blocking a fastening member insertion hole of a guide rail of a motion guide apparatus. The cap includes a disc-shaped top surface portion, a cylindrical side surface portion hanging down from the top surface portion, and a plurality of protrusions provided on an outer peripheral surface of the side surface portion. The plurality of protrusions is apart from each other in a circumferential direction on the outer peripheral surface of the side surface portion, and is present at an upper end portion, or from the upper end portion to an axially middle portion, of the outer peripheral surface. A thickness of the side surface portion between the protrusions is less than a thickness of the top surface portion.

Cap for motion guide apparatus

Provided is a rolling guide device which is capable of directly recognizing an operation condition of a moving member with respect to a track member or a circulation state of rolling elements in an endless circulation path, the rolling guide device including: a track member having a rolling surface; and a moving member, which is assembled to the track member through intermediation of a large number of rolling elements which roll on the rolling surface, and has an endless circulation path for the rolling elements, the moving member including: a main body member having a load rolling surface and a no-load return path for the rolling elements, the load rolling surface being opposed to the rolling surface of the track member to define a load path for the rolling elements, a pair of covers, which have direction change paths for allowing the rolling elements to move between the load path and the no-load return path, and is mounted to the main body member; and a measurement plate, which is interposed at least between the main body member and one cover to form part of the endless circulation path, and has a mounting portion for a sensor configured to detect an operation condition of the moving member with respect to the track member.

Rolling guide device

Provided is a screw device nozzle that can gas-cool a screw device effectively. A screw device cooling nozzle () of the present invention is placed in such a manner as to surround at least one of a screw shaft () and a nut (). The cooling nozzle () includes an internal passage () into which gas is introduced, an opening () for releasing the gas flow introduced into the internal passage (), a deflection surface (), provided adjacent to the opening (), for bending the gas flow released from the opening (), and a guide path () for drawing in gas outside the cooling nozzle ().

Screw device cooling nozzle and motion guide device cooling nozzle

A motion guide apparatus cooling nozzle is provided which can gas-cool a motion guide apparatus. Cooling nozzlesandof the present invention are mounted on a blockof the motion guide apparatus to cool at least one of a guide railand a blockthat is assembled to the guide railvia a rolling elementin such a manner as to be movable relatively. The cooling nozzlesa andinclude an inner passageinto which gas is introduced, an openingconfigured to emit a gas flow introduced into the inner passage, a deflection surfacethat is provided adjacently to the openingto bend the gas flow emitted from the opening, and a guiding surfaceconfigured to attract gas outside the cooling nozzlesand

Motion guide apparatus cooling nozzles, motion guide apparatus with cooling nozzles, and motion guide apparatus cooling system

The linear guideincludes a track rail, a movable block, and rollersarranged between the track railand the movable blockand capable of endlessly circulating. A section of the linear guideincluding an axis line of the rollersand taken vertically across an unloaded roller rolling pathor a direction change path, the unloaded roller rolling pathor the direction change pathincludes attitude support portionsthat support an attitude of the rollersrolling on the unloaded roller rolling pathor the direction change path, and space portions, andthat release a lubricant present inside the unloaded roller rolling pathor the direction change path. With such configuration, a smooth guide motion of a motion guide device is achieved unaffected by the lubricant in an unloaded circulation path.

A motion guide device including a track shaft having a rolling surface; a moving member movable along the track shaft; a first seal member in sliding contact with a surface of the track shaft to close a gap between the track shaft and the moving member; and a second seal member provided along the rolling surface of the track shaft and closes the gap between the track shaft and the moving member. The second seal member includes: a fixing substrate locked to the moving member; and a seal portion fixed to the fixing substrate along the rolling surface of the track shaft and includes a seal lip portion in sliding contact with the surface of the track shaft and an extended seal portion in close contact with the first seal member while being compressed by the first seal member when the first seal member is fixed to the moving member.

The motion guide device includes: a track rail including insertion holes for fixing bolts; and a moving block assembled to the track rail through intermediation of a large number of rolling elements. The moving block includes an adhering matter path provided at a position opposed to the insertion holes of the track rail, the adhering matter path allowing matters adhering on the track rail to pass from one end to another end of the moving block. A pair of path forming members are fixed to both ends of the moving block in a moving direction thereof. The path forming members each include: a pair of end seal portions which traverse rolling-element rolling surfaces of the track rail and abut against a surface of the track rail; and a path opening portion which is provided between the end seal portions and forms an entrance of the adhering matter path.

A linear actuator unit has a slide plate which is allowed to freely move along the outer rail while causing a cover to retreat. The linear actuator unit includes: an outer rail, which is formed into a cylindrical shape, and includes the slit-opening portion formed along an axial direction thereof; the slide plate (), which is coupled to an inner block in the hollow portion through the slit-opening portion; a cover belt, which is tensioned between both ends in a longitudinal direction of the outer rail so as to cover the slit-opening portion; a belt-guiding member, which separates the cover belt from the outer rail correspondingly to movement of the slide plate; and a seal member, which seals between the belt-guiding member and the cover belt and between the belt-guiding member and the outer rail.

Growing community of inventors

Tokyo, Japan

Ryuji Furusawa