WO2012144371A1 - 直動案内機構 - Google Patents

直動案内機構 Download PDF

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Publication number
WO2012144371A1
WO2012144371A1 PCT/JP2012/059751 JP2012059751W WO2012144371A1 WO 2012144371 A1 WO2012144371 A1 WO 2012144371A1 JP 2012059751 W JP2012059751 W JP 2012059751W WO 2012144371 A1 WO2012144371 A1 WO 2012144371A1
Authority
WO
WIPO (PCT)
Prior art keywords
linear motion
guide
screw shaft
guide mechanism
mechanism according
Prior art date
Application number
PCT/JP2012/059751
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
鈴木克義
Original Assignee
Ntn株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ntn株式会社 filed Critical Ntn株式会社
Priority to CN201280019070.0A priority Critical patent/CN103492758B/zh
Publication of WO2012144371A1 publication Critical patent/WO2012144371A1/ja

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/006—Guiding rollers, wheels or the like, formed by or on the outer element of a single bearing or bearing unit, e.g. two adjacent bearings, whose ratio of length to diameter is generally less than one
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/045—Ball or roller bearings having rolling elements journaled in one of the moving parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H2025/204—Axial sliding means, i.e. for rotary support and axial guiding of nut or screw shaft

Definitions

  • the present invention relates to a linear motion guide mechanism used for guiding a linear advance / retreat member that advances and retreats on a straight line in a machine tool, a measuring device, a conveyance device, and the like.
  • a linear rail 30 and a slide unit 31 that slides along the linear rail 30 are provided.
  • a linear rail guide also called linear motion rolling bearing.
  • a variety of products having different sizes, shapes, and the like are sold by manufacturers, and it is possible to select an appropriate linear rail guide that suits application conditions such as load load and use posture.
  • linear rail guides there are two types of linear rail guides that are widely used.
  • One is a circulation type in which rolling elements (not shown) such as balls and rollers in the linear rail guide circulate inside the slide unit 31.
  • the other type is a finite stroke type in which rolling elements called cross roller guides are constrained by a cage.
  • Both types use a hardened steel material such as bearing steel for the linear rail 30 or the rolling element that serves as a guide surface, thereby improving durability.
  • FIGS. 17 (A) and 17 (B) by combining the ball screw mechanism and the linear rail guide and installing them in parallel with each other, the radial load and the moment load do not directly act on the ball screw mechanism. Thus, it is possible to realize a linear guide with excellent durability performance and high accuracy.
  • Patent Documents 1 to 4 As a method of linear motion guidance without using a linear guide rail, in Patent Documents 1 to 4, vertical grooves and vertical guide surfaces are provided on the inner surface of the housing, and a bearing such as a cam follower is rotated along these vertical grooves and vertical guide surfaces. Technologies have been proposed to achieve linear motion guidance by running. Patent Document 5 proposes a technique for realizing linear motion guidance by providing a plurality of bearings arranged in the circumferential direction on the housing side and applying the outer ring surface of these bearings to a linearly advancing / retracting member disposed at the center. Has been.
  • the cylinder type linear actuator 7 driven by the motor 6 is being used in production facilities and transfer facilities as an alternative to an air cylinder for the purpose of energy saving.
  • the linear motion guide mechanism to be used is important, and the linear motion guide mechanism is a main factor that determines the appearance, cost, and performance of the cylinder type linear motion actuator.
  • the linear motion guide mechanism using a linear rail guide has a high rigidity and straightness guide structure, but the linear rail 30 is fixed by a plurality of fixing means 32 such as bolts as shown in FIGS. 17 (A) and 17 (B). This is an obstacle to promoting space saving and cost reduction.
  • the linear motion guide mechanism that does not use a linear rail guide has the following problems.
  • the main purpose is to prevent rotation of a linear motion member in a mechanism that converts rotational motion into linear motion (Patent Documents 1 and 2), and to be able to receive a load.
  • Patent Documents 3 and 4 there is a main purpose (Patent Documents 3 and 4), the latter also has a limit in the load direction that can be received due to the number and arrangement of bearings. In particular, the structure cannot be applied to a load from an oblique direction.
  • Patent Document 5 it is possible to receive loads from various directions, but the method of fixing the bearing and the adjustment of the pressing pressure to the linear advance / retreat member of the bearing are complicated.
  • An object of the present invention is to provide a linear motion guide mechanism and a linear motion actuator that can receive loads from various directions, have high rigidity, have high linear motion guide accuracy, and can be configured compactly.
  • the linear motion guide mechanism includes a housing, a screw shaft supported by the housing so as to be rotatable about the axis and immovable in the axial direction, and a nut screwed into the screw shaft. And a linear motion body that is moved in the axial direction of the screw shaft.
  • the housing is provided with a plurality of guide surfaces along the axial direction of the screw shaft, and each of the plurality of guide surfaces forms a pair, and the two guide surfaces forming the pair are not mutually connected.
  • a plurality of guided bodies that are parallel to each other and face each of the guide surfaces are provided on the linear motion body.
  • the linear motion body including the nut moves in the axial direction of the screw shaft.
  • the plurality of guided bodies provided on the linear moving body are moved in contact with the plurality of guide surfaces provided on the housing, respectively, so that the linear moving body is accurately guided in the axial direction of the screw shaft.
  • Each of the plurality of guide surfaces forms a pair, and the two guide surfaces that form a pair are not parallel to each other and face each other, so that the load acting on the linear motion body is distributed by each guide surface. I can receive it. Therefore, it can receive loads from various directions and large loads.
  • the two guided bodies that are in contact with the two guide surfaces facing each other are in a state of sandwiching the portion of the housing that is sandwiched between the two guide surfaces, thereby improving the rigidity. Since the guide surface is provided on the inner surface of the housing and it is not necessary to provide a separate rail for guiding the guided body, a compact configuration can be achieved.
  • the guided body is a guide bearing including a support shaft provided to project from the outer surface of the linear motion body, and a rolling bearing attached to the support shaft and having an outer peripheral surface rolling to the guide surface. It is good.
  • the guided body is a guide bearing composed of a support shaft and a rolling bearing, the frictional resistance between the guide surface and the guided body is small, and the linear motion body can be moved smoothly.
  • a plurality of pairs of the guide surfaces may be provided so as to be positioned on both sides in the diameter direction of the screw shaft.
  • the guide surfaces When the housing has a flat bottom surface, the guide surfaces may be inclined with respect to the bottom surface.
  • the inclination angle of the guide surface may be determined according to the load condition.
  • the shaft center of the support shaft may be offset with respect to a straight line orthogonal to the axis center of the screw shaft and parallel to the shaft center of the support shaft.
  • a plurality of the guided bodies may be provided side by side in the axial direction of the screw shaft on the linear motion body. In this case, the load capacity can be increased.
  • the plurality of guided bodies may be arranged so as to be shifted from each other in the axial direction of the screw shaft on the linear motion body. In this case, it is possible to arrange the guided bodies that meet the load conditions.
  • the guided body on the side surface of the moving bracket is determined so that the axial center of the screw shaft does not coincide with the center of the moving bracket.
  • the guide bearing of the guided body may be a deep groove ball bearing. Deep groove ball bearings are easy to assemble, are easily available, and are low cost.
  • the bearing of the guided body is an angular ball bearing, and a plurality of the angular ball bearings are arranged in the axial direction on the support shaft in a rear combination or a front combination, and preload is applied to the plurality of angular ball bearings. May be given.
  • the rolling bearing is a double row angular contact ball bearing, in addition to a load in a direction perpendicular to the guide surface, a load in the width direction of the guide surface can be received. Further, by applying the preload, it is possible to increase the rigidity by eliminating the gap between the bearings.
  • the guide bearing of the guided body may be a cam follower in which a roller that also serves as an outer ring is provided on the outer periphery of the support shaft via a rolling element.
  • the cam follower can increase the width of the outer ring as compared with a ball bearing of a deep groove ball bearing or an angular ball bearing, and therefore can improve the load capacity of a single unit.
  • the rolling element is made of a roller such as a cylindrical roller, the load capacity can be further improved.
  • the cam follower does not have an inner ring, the cam follower can be arranged in a narrow space in the diameter direction.
  • a resin coating may be applied to the outer peripheral surface of the outer ring of the guide bearing of the guided body. Thereby, the slidability between the outer ring of the guide bearing and the guide surface of the housing can be improved.
  • the guide surface may be a curved surface that is convex in an arc shape in a cross section perpendicular to the axial center of the screw shaft.
  • the outer peripheral surface of the outer ring of the guide bearing can be prevented from making edge contact with the guide surface.
  • An oil sump groove extending in the axial direction may be provided within a width of the guide surface in contact with the guide bearing.
  • the outer peripheral surface of the outer ring of the guide bearing is prevented from running out of lubricating oil, and the durability of the guide bearing can be improved.
  • a wear-resistant plate-like member having a surface hardness higher than that of the guide surface may be interposed between the guide surface and the rolling bearing of the guided body.
  • the plate-like member is provided by being attached to the surface of the guide surface. In this case, it is possible to improve the durability against the surface wear of the guide surface due to the rolling contact of the rolling bearing.
  • the surface of the guide surface may be subjected to surface hardening treatment. In this case, the durability of the guide surface can be improved.
  • the housing may be hardened by heat treatment. Also in this case, the durability of the guide surface can be improved.
  • the housing may include a housing main body and a guide surface forming member that has the guide surface and is fixed to the housing main body.
  • the guide surface can be easily processed.
  • the guided body may be a sliding contact member that protrudes from the linear motion body and slides in contact with the guide surface. Even if the guided body is a sliding contact member that makes sliding contact with the guide surface, the linear motion body can be accurately guided in the axial direction of the screw shaft.
  • the linear motion actuator of the present invention includes any of the linear motion guide mechanisms described above and a drive source that rotates the screw shaft of the linear motion guide mechanism. Since the linear motion guide mechanism has the actions and effects described above, the linear motion actuator to which this linear motion guide mechanism is applied can receive loads from various directions, has high rigidity, and linear motion guide accuracy. Is good.
  • the linear guide mechanism 1 includes a housing 2, a screw shaft 3 supported by the housing 2 so as to be rotatable about an axis O and immovable in the axial direction, And a linear motion body 5 including a nut 4 screwed onto the screw shaft 3.
  • the linear motion guide mechanism 1 constitutes a linear motion actuator 7 together with a motor 6 that is a drive source.
  • the housing 2 includes a cylindrical linear motion guide portion 2a, a screw shaft support portion 2b coupled to the left and right ends of the linear motion guide portion 2a, and a coupling housing coupled to the tip of the screw shaft support portion 2b.
  • the screw shaft 3 includes a ball screw portion 3a to which the nut 4 is screwed, a cylindrical surface portion 3b extending from the ball screw portion 3a to the base end side, and a male screw portion 3c.
  • the screw shaft 3 has a cylindrical surface portion 3b rotatably supported by a double row support bearing 8 fitted to the inner periphery of the screw shaft support portion 2b of the housing 2.
  • the support bearing 8 is a rolling bearing such as an angular ball bearing.
  • a retaining nut 9 is screwed onto the male screw portion 3c, and the axial movement of the screw shaft 3 is restricted.
  • the screw shaft 3 is coupled to a rotating shaft 6 a of the motor 6 installed outside the housing 2 through a coupling 10 housed in a coupling housing portion 2 c of the housing 2.
  • the nut 4 is, for example, a ball nut that circulates a ball (not shown) along a contact surface with the ball screw portion 3a of the screw shaft 3, and the ball screw portion 3a and the nut 4 constitute a ball screw mechanism 11. To do.
  • the ball screw mechanism 11 rotates the screw shaft 3 so that the linear motion body 5 including the nut 4 moves in the axial direction.
  • the linear moving body 5 includes the nut 4, a moving bracket 12 fitted to the outer periphery of the nut 4, and a shaft 13 extending from the moving bracket 12 in the axial direction of the screw shaft 3.
  • the nut 4 and the moving bracket 12 are coupled to each other so as not to rotate with each other by a spline or the like, and are not movable in the axial direction with respect to a retaining means (not shown).
  • the shaft 13 has a cylindrical shape, and a distal end portion protruding from the nut 4 of the screw shaft 3 is inserted into the hollow portion.
  • the shaft 13 is supported so as to be slidable in the axial direction of the screw shaft 3 by a linear sliding bearing 14 fitted to the inner periphery of the shaft support portion 2 d of the housing 2.
  • the moving bracket 12 and the shaft 13 may be integrated or separate.
  • the linear motion body 5 may have the shaft 13 attached to the nut 4 without having the moving bracket 12.
  • an output member (not shown) corresponding to the shaft 13 may be provided integrally with the nut 4 without having the shaft 4 separate from the nut 4.
  • the linear motion guide portion 2a of the housing 2 has a cylindrical shape having a substantially square cross section perpendicular to the axial direction of the screw shaft 3, and has a constant width along the axial direction of the screw shaft 3 on the inner surface thereof.
  • a plurality of guide surfaces 15 (15A to 15D) are provided. Each guide surface 15 is for guiding a guided body 16 described later in the axial direction of the screw shaft 3. In the example shown in the figure, a total of four guide surfaces 15 are provided, one on each side.
  • Each of the plurality of guide surfaces 15 is arranged in pairs, that is, a guide surface 15A and a guide surface 15B, and a guide surface 15C and a guide surface 15D, respectively, and each pair of guide surfaces 15 is not parallel to each other. They are facing each other. That is, each pair of guide surfaces 15 has a width surface that intersects with each other on its extension line.
  • the moving bracket 12 of the linear moving body 5 is provided with guided bodies 16 that are in contact with the guide surfaces 15 respectively.
  • the guided body 16 is a guide comprising a trunnion shaft-like support shaft 17 provided to protrude from the outer surface of the movable bracket 12 and a rolling bearing 18 attached to the support shaft 17 and having an outer peripheral surface rolling to the guide surface 15. It is considered as a bearing.
  • the support shaft 17 of each guided body 16 has its axis P intersecting the axis center O of the screw shaft 3.
  • the rolling bearing 18 of this embodiment is a deep groove ball bearing.
  • the guided body 16 may be provided in a portion other than the moving bracket 12 of the linear moving body 5, that is, the nut 4 or the shaft 13.
  • the linear motion body 5 including the nut 4 is moved in the axial direction of the screw shaft 3 by rotating the screw shaft 3 by driving the motor 6.
  • the plurality of guided bodies 16 provided on the moving bracket 12 of the linear moving body 5 are moved in contact with the plurality of guide surfaces 15 provided on the housing 2, so that the linear moving body 5 is screw shafts. 3 is guided with high accuracy in the axial direction.
  • Each of the plurality of guide surfaces 15 forms a pair, and the two guide surfaces 15 that form a pair are not parallel to each other and face each other, so that the load acting on the linear moving body 5 is applied to each guide surface 15 by a load. Received in a distributed manner. Therefore, it can receive loads from various directions and large loads.
  • the two guided bodies 16 that are in contact with the two guide surfaces 15 that face each other are pressed against the respective guide surfaces 15 to sandwich the portion of the housing 2 that is sandwiched between the two guide surfaces 15. , Rigidity can be improved.
  • the guided body 16 is a guide bearing including a support shaft 17 and a rolling bearing 18, and the outer ring 18 a of the rolling bearing 18 is in rolling contact with the guiding surface 15, so that the guiding surface 15 and the guided body 16 are Therefore, the linear motion body 5 can be moved smoothly.
  • the deep groove ball bearing used as the rolling bearing 18 is easy to assemble, easily available, and low cost.
  • the guide surface 15 may be a curved surface that is convex in an arc shape in a cross section perpendicular to the axial center O of the screw shaft 3.
  • the outer peripheral surface of the outer ring 18 a of the rolling bearing 18 can be prevented from making edge contact with the guide surface 15.
  • an oil sump groove 20 extending in the axial direction may be provided within the width of the guide surface 15 in contact with the rolling bearing 18.
  • the outer peripheral surface of the outer ring 18a of the rolling bearing 18 is prevented from running out of lubricating oil, and the durability of the rolling bearing 18 can be enhanced.
  • a plate member 21 for wear resistance having a surface hardness higher than that of the guide surface 15 may be interposed between the guide surface 15 and the rolling bearing 18.
  • the plate-like member 21 is provided by being attached to the surface of the guide surface 15. In this case, durability against surface wear of the guide surface 15 due to rolling contact of the rolling bearing 18 can be enhanced.
  • the surface of the guide surface 15 may be subjected to surface hardening treatment. Also in this case, the durability of the guide surface 15 can be improved. Alternatively, the entire housing 2 may be cured by heat treatment. Also in this case, the durability of the guide surface 15 can be improved.
  • the housing 2 may be composed of a housing body 2A and a guide surface forming member 22 having a guide surface 15 and fixed to the housing body 2A.
  • the housing body 2A and the guide surface forming member 22 are fixed by an appropriate method such as bolt fixing.
  • the guide surface 15 can be easily processed.
  • the rolling bearing 18 may be an angular ball bearing in which a plurality of rolling bearings 18 are arranged in the axial direction on the support shaft 17 in a combination of the back surface or the front surface. It is desirable to apply a preload to the plurality of angular ball bearings. If the rolling bearing 18 is a double-row angular ball bearing, in addition to the load in the direction perpendicular to the guide surface 15, a load in the width direction of the guide surface 15 can be received. Further, by applying the preload, it is possible to increase the rigidity by eliminating the gap between the bearings.
  • the guide bearing constituting the guided body 16 is provided with a roller 24c that also serves as an outer ring via a rolling element 24b on the outer periphery of the support shaft 24a, instead of the combination of the support shaft 17 and the rolling bearing 18.
  • the cam follower 24 may be used.
  • the cam follower 24 can increase the width of the roller 24c, which is an outer ring, as compared with the rolling bearing 18 such as a deep groove ball bearing or an angular ball bearing, and therefore can improve the load capacity of a single unit.
  • the rolling elements 24b are made of rollers such as cylindrical rollers, the load capacity can be further improved.
  • the cam follower 24 does not have an inner ring
  • the outer peripheral surfaces 18a and 24c of the guide bearing may be coated with a resin such as polyurethane. Thereby, the slidability between the outer rings 18a and 24c and the guide surface 15 can be improved.
  • the guided body 16 may be in sliding contact with the guide surface 15 as shown in FIG.
  • the guided body 16 is provided with a sliding contact member 26 that slides in contact with the guide surface 15 on a support member 25 that is provided on the movable bracket 12 so as to protrude to the outer peripheral side. Even if the guided body 16 is in sliding contact with the guide surface 15, the linear motion body 5 can be accurately guided in the axial direction of the screw shaft 3.
  • a plurality of guided bodies 16 may be provided on the linear motion body 5 in the axial direction of the screw shaft 3. Thereby, the load capacity can be increased.
  • a plurality of guided bodies 16 may be arranged on the linear motion body 5 so as to be shifted from each other in the circumferential direction of the screw shaft 3.
  • the plurality of guided bodies 16 may be paired guided bodies 16 or guided bodies 16 belonging to different pairs. In this way, by shifting the positions in the axial direction of the plurality of guided bodies 16 to form a staggered arrangement, the guided bodies 16 can be arranged in accordance with the load conditions.
  • the angles ⁇ A , ⁇ B , ⁇ C , and ⁇ D with respect to the bottom surface F of the housing 2 of each guide surface 15 are set to plus 45 ° or minus 45 °. Also good.
  • the inclination angles of the guide surfaces 15 are different, ⁇ A is plus 45 °, ⁇ B is minus 15 °, and ⁇ C and ⁇ D are plus 30 °. It is set to minus 30 °.
  • the shafts 17 of all the guided bodies 16 or the shaft centers P of some of the guided bodies 16 are screwed. It is offset with respect to a straight line orthogonal to the axis O of the shaft 3 and parallel to the axis P of the support shaft 17. As a result, it is possible to receive a wider variety of loads, and it is possible to distribute the load and improve the housing strength.
  • the shape of the cross section orthogonal to the axial direction of the screw shaft 3 of the linear motion guide portion 2a of the housing 2 is not limited to a polygon such as a square, but is a circle or an ellipse as shown in the sixth embodiment shown in FIG. It is good also as a shape (not shown).
  • the number of pairs of guide surfaces 15 may be three or more as shown in the sixth embodiment shown in FIG. In short, the shape and arrangement of the housing 2 and the guide surface 15 may be determined in accordance with the location where the linear guide mechanism 1 is used, the posture, the load condition, and the like.
  • the shaft center O of the screw shaft 3 and the center of the moving bracket 12 do not have to coincide with each other. Even in that case, the linear motion body 5 can be moved by rotating the screw shaft 3.
  • the seventh embodiment shown in FIG. 16 is an example of a linear motion guide mechanism 1 in which the axial center O of the screw shaft 3 and the center Q of the moving bracket 12 do not coincide with each other.
  • the screw shaft 3 is disposed at a location where the guide body 16 is not provided.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Bearings For Parts Moving Linearly (AREA)
  • Rolling Contact Bearings (AREA)
PCT/JP2012/059751 2011-04-21 2012-04-10 直動案内機構 WO2012144371A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201280019070.0A CN103492758B (zh) 2011-04-21 2012-04-10 直线移动导向机构

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011094670A JP5908216B2 (ja) 2011-04-21 2011-04-21 直動案内機構
JP2011-094670 2011-04-21

Publications (1)

Publication Number Publication Date
WO2012144371A1 true WO2012144371A1 (ja) 2012-10-26

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JP (1) JP5908216B2 (zh)
CN (1) CN103492758B (zh)
WO (1) WO2012144371A1 (zh)

Cited By (4)

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WO2014061688A1 (ja) * 2012-10-17 2014-04-24 Ntn株式会社 直動案内装置
EP2886908A1 (en) * 2013-12-19 2015-06-24 Aktiebolaget SKF Anti-rotation device for actuators
WO2015091887A3 (en) * 2013-12-19 2015-08-13 Aktiebolaget Skf Anti-rotation device for actuators
WO2016029965A1 (en) * 2014-08-29 2016-03-03 Aktiebolaget Skf Valve actuating device with anti-rotation and axial guidance means

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DE102013003830A1 (de) * 2013-03-07 2014-09-11 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Hallstadt Spindelantrieb für ein Verstellelement eines Kraftfahrzeugs
JP2014196020A (ja) * 2013-03-29 2014-10-16 株式会社ショーワ ステアリング装置
CN103545978A (zh) * 2013-10-24 2014-01-29 南京工艺装备制造有限公司 一种电动推杆
US9316261B2 (en) * 2014-02-10 2016-04-19 NADELLA S.r.l. Linear guide system
CN105364919B (zh) * 2015-11-20 2017-07-04 杭州长川科技股份有限公司 一种直线运动模组
CN106050915A (zh) * 2016-06-23 2016-10-26 中山市美捷时包装制品有限公司 一种用于直线运动系统的滑块装置
CN107165999B (zh) * 2017-06-01 2019-05-07 中国科学院国家天文台南京天文光学技术研究所 螺杆螺母副的轴向滑动导向机构
JP2019055761A (ja) * 2017-09-22 2019-04-11 株式会社東海理化電機製作所 シフト装置

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6161362U (zh) * 1984-09-28 1986-04-25
JPS6285333U (zh) * 1985-11-18 1987-05-30
JPH01143424U (zh) * 1988-03-28 1989-10-02
JPH02113114A (ja) * 1988-10-20 1990-04-25 Tsubakimoto Seiko:Kk 軸支ローラ式直線運動用ベアリング
JPH0326825U (zh) * 1989-07-25 1991-03-19
JPH0438387U (zh) * 1990-07-30 1992-03-31
JPH10141367A (ja) * 1996-11-07 1998-05-26 Sanshin Ind Co Ltd 送り装置
JPH11105593A (ja) * 1997-10-03 1999-04-20 Ntn Corp 車両用シートスライド装置
JPH11105591A (ja) * 1997-10-03 1999-04-20 Ntn Corp 車両用シートスライド装置
JPH11351249A (ja) * 1998-06-12 1999-12-24 Ntn Corp スライドドア案内装置およびそのローラ装置
JP2004270746A (ja) * 2003-03-06 2004-09-30 Nsk Ltd 直動案内装置
JP2009002471A (ja) * 2007-06-23 2009-01-08 Yushin Precision Equipment Co Ltd 直動案内機構
JP2009503377A (ja) * 2005-07-27 2009-01-29 ギュデル グループ アーゲー リニアガイド
JP2009092131A (ja) * 2007-10-09 2009-04-30 Jtekt Corp 送り案内装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5106145B2 (ja) * 2008-01-22 2012-12-26 オリエンタルモーター株式会社 シリンダ型アクチュエータ
DE102008019002A1 (de) * 2008-04-16 2009-10-22 Robert Bosch Gmbh Linearwälzlager mit gesonderten Wälzflächenteilen
DE102008051682A1 (de) * 2008-10-15 2010-04-22 Robert Bosch Gmbh Linearwälzlager mit geklebten Wälzflächenteilen

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6161362U (zh) * 1984-09-28 1986-04-25
JPS6285333U (zh) * 1985-11-18 1987-05-30
JPH01143424U (zh) * 1988-03-28 1989-10-02
JPH02113114A (ja) * 1988-10-20 1990-04-25 Tsubakimoto Seiko:Kk 軸支ローラ式直線運動用ベアリング
JPH0326825U (zh) * 1989-07-25 1991-03-19
JPH0438387U (zh) * 1990-07-30 1992-03-31
JPH10141367A (ja) * 1996-11-07 1998-05-26 Sanshin Ind Co Ltd 送り装置
JPH11105593A (ja) * 1997-10-03 1999-04-20 Ntn Corp 車両用シートスライド装置
JPH11105591A (ja) * 1997-10-03 1999-04-20 Ntn Corp 車両用シートスライド装置
JPH11351249A (ja) * 1998-06-12 1999-12-24 Ntn Corp スライドドア案内装置およびそのローラ装置
JP2004270746A (ja) * 2003-03-06 2004-09-30 Nsk Ltd 直動案内装置
JP2009503377A (ja) * 2005-07-27 2009-01-29 ギュデル グループ アーゲー リニアガイド
JP2009002471A (ja) * 2007-06-23 2009-01-08 Yushin Precision Equipment Co Ltd 直動案内機構
JP2009092131A (ja) * 2007-10-09 2009-04-30 Jtekt Corp 送り案内装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014061688A1 (ja) * 2012-10-17 2014-04-24 Ntn株式会社 直動案内装置
US10294989B2 (en) 2012-10-17 2019-05-21 Ntn Corporation Linear motion guide device
US10294990B2 (en) 2012-10-17 2019-05-21 Ntn Corporation Linear motion guide device
EP2886908A1 (en) * 2013-12-19 2015-06-24 Aktiebolaget SKF Anti-rotation device for actuators
WO2015091887A3 (en) * 2013-12-19 2015-08-13 Aktiebolaget Skf Anti-rotation device for actuators
WO2016029965A1 (en) * 2014-08-29 2016-03-03 Aktiebolaget Skf Valve actuating device with anti-rotation and axial guidance means
US10161540B2 (en) 2014-08-29 2018-12-25 Aktiebolaget Skf Valve actuating device with anti-rotation and axial guidance means

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