WO2015064444A1 - Actionneur uniaxe - Google Patents

Actionneur uniaxe Download PDF

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Publication number
WO2015064444A1
WO2015064444A1 PCT/JP2014/078096 JP2014078096W WO2015064444A1 WO 2015064444 A1 WO2015064444 A1 WO 2015064444A1 JP 2014078096 W JP2014078096 W JP 2014078096W WO 2015064444 A1 WO2015064444 A1 WO 2015064444A1
Authority
WO
WIPO (PCT)
Prior art keywords
slider
rolling
screw shaft
uniaxial actuator
guide rail
Prior art date
Application number
PCT/JP2014/078096
Other languages
English (en)
Japanese (ja)
Inventor
裕哉 下村
Original Assignee
日本精工株式会社
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 日本精工株式会社 filed Critical 日本精工株式会社
Priority to DE212014000209.5U priority Critical patent/DE212014000209U1/de
Priority to JP2015544944A priority patent/JPWO2015064444A1/ja
Publication of WO2015064444A1 publication Critical patent/WO2015064444A1/fr

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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
    • 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
    • F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
    • F16H25/2214—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls with elements for guiding the circulating balls
    • F16H25/2219—Axially mounted end-deflectors
    • 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
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/063—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body, e.g. a carriage or part thereof, provided between the legs of a U-shaped guide rail or track
    • 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
    • F16C2322/00—Apparatus used in shaping articles
    • F16C2322/39—General buildup of machine tools, e.g. spindles, slides, actuators
    • 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
    • F16H2025/2031—Actuator casings
    • F16H2025/2034—Extruded frame casings
    • 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 single-axis actuator.
  • a uniaxial actuator in which a ball screw mechanism and a linear guide mechanism are combined includes a guide rail having a U-shaped cross section perpendicular to the longitudinal direction, a slider disposed in a U-shaped recess of the guide rail, a guide rail, A plurality of rolling elements disposed between the sliders; A nut is formed in the slider in parallel with the guide rail, and a plurality of balls are arranged on a track formed by the spiral groove of the nut and the spiral groove of the screw shaft passing through the nut.
  • the guide rail has a rolling surface that constitutes a rolling passage of the rolling element on the inner surface facing each side surface of the slider.
  • the slider has a rolling surface that forms a rolling path facing the rolling surface of the guide rail, a return path of the rolling element, and a direction change path that communicates the return path and the rolling path.
  • a rolling element is disposed in a circulation path constituted by the rolling path, the return path, and the direction changing path.
  • the uniaxial actuator further includes a circulating component that returns the ball from the end point of the track to the start point.
  • the uniaxial actuator is a slider in which the rotational force of the screw shaft is transmitted to the nut through the ball by the rotation of the screw shaft, and the rolling element circulates in the circulation path while rolling the rolling passage in a loaded state. Moves along the guide rail.
  • Patent Literature 1 and Patent Literature 2 describe a uniaxial actuator in which rollers are incorporated as rolling elements. By using a roller as a rolling element, load capacity and rigidity can be increased while ensuring weight reduction and compactness compared to the case of using a ball.
  • the internal thread portion of the bearing block that is, the nut of the slider is formed by insert molding.
  • the single-axis actuator described in Patent Document 2 rolls through a DF (Double Face) contact structure, that is, two rows of rolling passages formed on each inner surface, in order to ensure weight reduction and compactness at a low cost.
  • DF Double Face
  • a nut is directly formed on the slider.
  • a circulation tube is used to form a ball return path for returning the ball from the end point of the track to the start point.
  • a through hole is provided in the slider along the direction perpendicular to the longitudinal direction of the screw shaft, the leg of the circulation tube is inserted into this through hole, and the circulation tube is fixed to the upper or lower surface of the slider with a mounting bracket.
  • the area of the outer circumference of the screw shaft is less than 20% of the area of the cross section perpendicular to the longitudinal direction of the screw shaft of the slider.
  • the circulation tube When the circulation tube is fixed to the lower surface of the slider with a uniaxial actuator, if the projection tube protrudes from the lower surface of the slider, the circulation tube must be provided with sufficient space between the bottom surface of the U-shaped guide rail. There is a risk of contact.
  • a recess for arranging the circulation tube is provided on the upper surface of the slider, or the circulation tube is protruded from the upper surface of the slider so that the circulation tube is disposed on the workpiece, that is, the member fixed on the slider. It is necessary to provide a relief part.
  • the cross-sectional shape perpendicular to the longitudinal direction of the screw shaft of the slider becomes large.
  • the manufacturing cost increases.
  • the problem of the present invention is that, when compared with a single-axis actuator that uses a circulation tube to form a ball return path of the single-axis actuator, the diameter of the outer circumference of the screw shaft is the same as that of the slider. This is to increase the load capacity when the cross-sectional shape is small and the dimensions of the slider in the longitudinal direction of the screw shaft are the same.
  • the uniaxial actuator of the present invention is: A guide rail whose section perpendicular to the longitudinal direction is U-shaped; A slider disposed in a U-shaped recess of the guide rail; A plurality of rolling elements disposed between the guide rail and the slider; A nut formed in the slider in parallel with the guide rail; A screw shaft passing through the nut; A plurality of balls disposed between tracks formed by the spiral groove of the nut and the spiral groove of the screw shaft;
  • the guide rail has a rolling surface that constitutes a rolling path of the rolling element on an inner surface facing each side surface of the slider,
  • the slider is configured to change the direction of communication between the rolling surface that constitutes the rolling passage so as to face the rolling surface of the guide rail, the return passage of the rolling element, and the return passage and the rolling passage.
  • the rolling element is disposed in a circulation path including the rolling path, the return path, and the direction changing path.
  • the ball return path for returning the ball from the end point of the track to the start point has a through hole that penetrates the slider along the longitudinal direction of the screw shaft, and a direction changing path that connects the through hole to the screw of the slider. Consists of circulating parts arranged at both ends in the longitudinal direction of the shaft, The rotational force of the screw shaft is transmitted to the nut through the ball by the rotation of the screw shaft, and the rolling element circulates in the circulation path while rolling the rolling path in a loaded state. Thus, the slider can be moved along the guide rail.
  • the circulating parts for returning the ball from the end point of the track to the starting point are arranged at both ends of the slider in the longitudinal direction of the screw shaft.
  • the entire direction is used as the ball trajectory of the ball screw mechanism. Therefore, the load capacity can be increased when the dimensions of the slider in the longitudinal direction of the screw shaft are the same as when the circulation tube is used as the circulation component.
  • both ends of the screw groove in the longitudinal direction of the screw groove of the nut are not used as balls of the ball screw mechanism.
  • the uniaxial actuator of the present invention there is no circulating component on the upper and lower surfaces of the slider, so that the cross-sectional shape perpendicular to the longitudinal direction of the screw shaft of the slider is not enlarged by the circulating component. Therefore, the area of the outer periphery circle of the screw shaft can be 20% or more of the area of the cross section perpendicular to the longitudinal direction of the screw shaft of the slider. That is, in the uniaxial actuator of the present invention, the relationship between the area S 1 of the outer circumference of the screw shaft and the area S 2 of a cross section obtained by cutting the slider along a plane perpendicular to the longitudinal direction of the screw shaft is S 1 ⁇ 0. .2S 2 may be satisfied.
  • the rolling element is a roller, and two rows of rolling passages are formed on each inner surface, and the load acting line of the roller row rolling on these two rows of rolling passages. It is good also as a structure where the intersection of these exists inside the said rolling channel
  • the uniaxial actuator of the present invention may have a configuration in which at least one circulating component pressing lid is provided at both ends of the circulating component in the longitudinal direction of the screw shaft.
  • the circulating component can be fixed by at least one circulating component pressing lid, and it is possible to provide a high-quality single-axis actuator by suppressing loosening and vibration of the circulating component. It should be noted that it is desirable to fix the circulating parts with a plurality of circulating part pressing lids so that the circulating parts can be used in common for products having different screw shaft lead dimensions.
  • the uniaxial actuator of the present invention may be configured such that the circulating portion pressing lid is made of a metal material or an elastomer material.
  • the uniaxial actuator according to the present invention may be configured such that the circulating portion pressing lid is formed of a polyolefin resin, and the circulating portion pressing lid contains 50% by weight or more of lubricating oil.
  • lubricating oil can be supplied to a rolling passage with a compact structure. That is, it is possible to reduce wear and damage by supplying lubricating oil directly to the metal contact surface.
  • a through-hole may be provided at an arbitrary position of the circulating component pressing lid to secure an air circulation path.
  • the uniaxial actuator of the present invention may be configured such that the circulating portion pressing lid is made of an aluminum material. If the circulating part presser lid that does not receive a large load directly is formed of aluminum material, carbon fiber, or a composite material using carbon fiber, the load on the motor can be suppressed by reducing the weight of the slider. In addition, a low-cost holding lid can be supplied.
  • the uniaxial actuator of the present invention may be configured such that the through hole of the ball return path is formed in a thick part of the slider. With this configuration, the slider can be uniformly heat-treated. Accordingly, deformation of the slider due to heat treatment is alleviated, and uniform heat treatment quality can be obtained.
  • the direction changing path of the circulating component is substantially perpendicular or substantially parallel to the installation surface of the guide rail. It is good also as a structure arrange
  • the uniaxial actuator of the present invention may be configured such that the right and left screws are formed with the same lead from the axial center to both ends, and sliders are provided on the left and right screw shafts. Thereby, each slider can be operated symmetrically with respect to the reference line.
  • the uniaxial actuator of the present invention may have a configuration in which two independent ball screw shafts and a slider are disposed in the U-shaped recess of the guide rail. Thereby, each slider can be freely operated with respect to the reference line.
  • the present invention in comparison with a uniaxial actuator that uses a circulation tube to form a ball return path of the uniaxial actuator, when the diameter of the outer circumference of the screw shaft is the same, it is perpendicular to the longitudinal direction of the screw shaft of the slider.
  • the load capacity can be increased when the cross-sectional shape is small and the length of the slider in the longitudinal direction of the screw shaft is the same.
  • FIG. 3 is a cross-sectional view taken along 3A-3A in FIG. 4A is a view showing the slider of FIG. 1
  • FIG. 4B is a cross-sectional view of 4A-4A of FIG. 4A and showing an end deflector and an end deflector holding lid.
  • FIG. 5B is a view showing a direction change path
  • FIG. 5A is a left side view or rear view of FIG. 5B
  • FIG. 5C is a right side view or front view of FIG. 5B.
  • FIG. FIG. 6A is a side view of FIG. 6B and FIG. 6C is a view showing different thicknesses of FIG.
  • FIG. 7A is a view showing a modified example of the slider
  • FIG. 7B is a cross-sectional view taken along the line 7A-7A in FIG. 7A and showing an end deflector and a plurality of end deflector holding lids.
  • It is sectional drawing of the uniaxial actuator which shows the state which removed the end deflector from the slider main body shown in FIG.
  • FIG. 1 Comprising: The center of a screw shaft.
  • a screw shaft is a top view which shows the uniaxial actuator by which the right-hand screw and the left-hand screw were formed with the same lead toward the both ends from the axial center. It is a figure which shows the uniaxial actuator different from FIG. 1, Comprising: It is a top view which shows the uniaxial actuator comprised by the some ball screw and the some slider.
  • FIGS. 1 to 3 are a plan view, a side view, and a cross-sectional view perpendicular to the linear motion direction showing a uniaxial actuator corresponding to an embodiment of the present invention.
  • FIG. 1 is a cross-sectional view taken along 3A-3A in FIG.
  • the uniaxial actuator includes a guide rail 1, a slider 2, a screw shaft 3, balls 4, rollers 5, and an end deflector 6.
  • the cross section perpendicular to the longitudinal direction of the guide rail 1 is U-shaped, and the slider 2 is accommodated in a U-shaped recess 11.
  • the guide rail 1 includes a pair of side portions 12, a bottom portion 13, and end members 14 ⁇ / b> A and 14 ⁇ / b> B, and the inner side surface of the side portion 12 faces the side surface of the slider 2.
  • a rolling surface 12 a that constitutes a rolling path of the roller 5 is formed on the inner surface of each side portion 12.
  • a through hole 15 for inserting a mounting bolt is formed in the bottom portion 13 of the guide rail 1. The through hole 15 is formed at a boundary position with each side portion 12 of the bottom portion 13 in the width direction.
  • the slider 2 is formed with a nut 21 having an internal thread penetrating in parallel with the guide rail 1.
  • the nut 21 is formed by directly machining a spiral groove in the slider 2.
  • the screw shaft 3 passes through the nut 21, and the ball 4 is disposed between the nut 21 and the screw shaft 3.
  • Both ends in the longitudinal direction of the screw shaft 3 are rotatably supported by end members 14A and 14B at both ends in the longitudinal direction of the guide rail 1.
  • One end of the screw shaft 3 in the length direction that is, a portion protruding to the right end in FIGS. 1 and 2 is attached to the motor in use.
  • the slider 2 is divided into a slider body 2A, an end cap 2B, a side seal 2C, and a side cover 2D in the linear motion direction.
  • a direction change path for the rollers 5 is formed in the end cap 2B.
  • slide plates 2E disposed on the upper surface of the side portion 12 of the guide rail 1 are formed over the entire linear motion direction.
  • a rolling surface 22a is formed on each side surface of the slider body 2A at a position facing the rolling surface 12a of the guide rail 1.
  • This rolling passage has two to four rows, and the intersection C of the load acting lines L1 and L2 of the roller rows rolling on the two rows of rolling passages of each side portion 12 is located inside the rolling passage in the width direction.
  • a horizontal line LC passing through the intersection C is disposed below the line L3, which is the height of the center of the screw shaft 3, by a dimension K.
  • the angle between the horizontal line LC and the load action lines L1 and L2, that is, the contact angle is 45 °.
  • the end deflector 6 includes a main body 61 and a fixed piece 62, and a direction changing path 61a and a tongue 61b are formed in the main body 61.
  • the slider body 2A is formed with through holes 24 and 25 penetrating along the longitudinal direction of the screw shaft.
  • the through hole 25 is a hole into which a sleeve 51 a for forming the return passage 51 of the roller 5 is inserted.
  • the through hole 24 is a hole constituting a return path of the ball 4 and is formed in the lower right portion of the nut 21.
  • a notch 26 for fitting the main body 61 of the end deflector 6 is formed in the end surface of the slider main body 2A in the longitudinal direction of the screw shaft in a range including the through hole 24 continuously with the spiral groove of the nut 21.
  • a recess 27 into which the fixed piece 62 of the end deflector 6 is fitted is formed next to the notch 26.
  • the end deflector 6 is fixed to the end portion of the slider 21 in the linear motion direction of the nut 21 by fitting the main body 61 of the end deflector 6 into the notch 26 and fitting the fixing piece 62 into the recess 27. .
  • FIG. 3 shows this state.
  • the direction change path 61a of the main body 61 of the end deflector 6 is connected to the return path 24 of the slider main body 2A. Further, by fitting the fixing piece 62 into the recess 27, the end deflector 6 is restrained in the linear movement direction of the slider main body 2A and the radial direction and circumferential direction of the nut 21, and the main body 31 is prevented from rotating in these directions. ing.
  • the end deflector holding lid 7 shown in FIGS. 4, 6A and 6B is further fitted into the notch 26 of the slider body 2A. Thereby, the end deflector 6 can be fixed and loosening and vibration can be suppressed. It is desirable to fix the end deflector 6 with a plurality of end deflector presser lids 7 as shown in FIGS. 6A-6C, 7A and 7B so that the end deflector 6 can be commonly used for products having different screw shaft lead dimensions.
  • the end deflector holding lid 7 may be made of a metal material or an elastomer material. Further, the end deflector holding lid 7 may be made of a polyolefin resin and contain 50% by weight or more of lubricating oil. Thereby, lubricating oil can be supplied to a rolling passage with a compact structure.
  • the end deflector holding lid 7 may be made of an aluminum material, carbon fiber, or a composite material using carbon fiber. Thereby, the slider main body 2A can be reduced in weight.
  • Area S 2 in a cross section perpendicular to the linear direction of the slider main body 2A, and corresponds to the area of the range surrounded by the contour line of a circle and the slider main body 2A constituting the inner peripheral surface of the nut 21, the slide plate 2E Does not include cross-sectional area.
  • the guide rail 1 is fixed to the support base by bolting using the attachment holes 15.
  • a spacer is fixed to a female screw hole 28 formed on the upper surface of the slider body 2 ⁇ / b> A, and a moving member is fixed to the upper part at both ends in the width direction of the spacer.
  • a ball screw mechanism that is, the nut 21, the screw shaft 3, the ball 4, the direction changing path 61a of the end deflector 6, the through hole 24 of the slider body 2A, and the linear guide mechanism That is, the slider 2 moves along the guide rail 1 via the rolling surface 12a of the guide rail, the rolling surface 22a of the slider body 2A, the rollers 5, the return passage 51 of the slider body 2A, and the direction changing path of the end cap 2B. Moving. Along with this, the moving member moves linearly.
  • the uniaxial actuator of this embodiment unlike the case where the ball return path is formed using the circulation tube, the end deflector 6 does not exist on the upper surface and the lower surface of the slider 2, so The cross-sectional shape perpendicular to the direction becomes smaller. Further, the entire longitudinal direction of the screw shaft of the spiral groove of the nut 21 is used as the track of the ball 4 of the ball screw mechanism. Therefore, the uniaxial actuator of this embodiment has a smaller cross-sectional shape perpendicular to the longitudinal direction of the screw shaft of the slider 2 when the diameter of the outer circumference of the screw shaft 3 is the same as that of the conventional uniaxial actuator, and the screw of the slider 2 The load capacity is increased when the axial length is the same.
  • a DF contact structure in which the intersection C of the load acting lines of the roller trains rolling on the two rows of rolling passages on each side portion 12 exists inside the rolling passage in the width direction, that is, a face-to-face contact construction. Therefore, it is excellent in alignment, and the force generated by applying a twisting force is small. For this reason, as a result of forming the rolling surface 22 a of the roller 5 and the spiral groove of the nut 21, that is, the ball rolling groove of the ball screw, in separate steps with respect to the slider 2, relative displacement occurs between the two. In addition, it is possible to suppress a decrease in life due to the application of the twisting force.
  • the line LC that is the height of the center of the two-row rolling passages on one side is arranged below the line L that is the height of the center of the screw shaft 3. That is, the positions of the rolling surfaces 12 a and 22 a are arranged near the boundary position with the bottom 13 of the side portion 12. Therefore, even when the slider 2 receives a load and the side portion 12 of the guide rail 1 is opened and deformed, the rolling surfaces 12a and 22a generated by the inclination of the rolling surfaces 12a and 22a are formed at the contact portions with the five portions. It is possible to minimize the unevenness of the surface pressure distribution and the life reduction due to edge loading.
  • the direction changing path 61a of the end deflector 6 is substantially perpendicular to the installation surface of the guide rail 1 or It arrange
  • the direction changing path 61a of the end deflector 6 shown on the right side of FIGS. 3 and 4B extends substantially parallel to the installation surface of the guide rail 1, and the end shown on the left side of FIG. 4B.
  • the direction changing path 61 a of the deflector 6 extends substantially perpendicular to the installation surface of the guide rail 1.
  • the through hole 24 when the through hole 24 is formed in the slider main body 2A, the through hole 24, that is, the cavity formed by processing, can be formed at a position away from the outer peripheral surface of the slider main body 2A, that is, a thick portion. That is, since the hollow portion and the outer peripheral surface of the slider body 2A are close to each other and a thin portion is not generated in the slider body 2A, the slider body 2A can be uniformly heat-treated. Therefore, the deformation of the slider body 2A due to heat treatment is alleviated, and uniform heat treatment quality can be obtained.
  • the rolling element of the linear guide mechanism is the roller 5
  • the present invention is also applied to the case where the rolling element of the linear guide mechanism is a ball 8 as shown in FIG.
  • the rolling groove 12b of the ball 8 is formed on the inner surface of the side portion 12 of the guide rail 1, and the rolling groove 22b is formed on the slider body 2A.
  • a through hole 29 extending in the longitudinal direction of the screw shaft is formed in the slider body 2A as a return path for the ball 8.
  • the linear guide mechanism of the single-axis actuator is constituted by the rolling groove 12b of the guide rail 1, the rolling groove 22b of the slider body 2A, the ball 8, the return passage 29 of the slider body 2A, and the direction changing path of the end cap 2B.
  • the other points are the same as those of the uniaxial actuator in FIG.
  • the area S 1 of the outer circumference circle of the screw shaft 3, that is, the circle having the diameter indicated by A in FIG. 9, is 23% of the cross section area S 2 perpendicular to the longitudinal direction of the screw shaft of the slider body 2A (S 1 ⁇ 0.2S 2 ).
  • the diameter A is 25 mm
  • the area S 1 is 490.6 mm 2
  • the area S 2 is 2117 mm 2 .
  • Area S 2 in a cross section perpendicular to the linear direction of the slider main body 2A, and corresponds to the area of the range surrounded by the contour line of a circle and the slider main body 2A constituting the inner peripheral surface of the nut 21, the slide plate 2E Does not include cross-sectional area.
  • FIG. 10 shows a uniaxial actuator in which the screw shaft 3 has a right screw and a left screw formed with the same lead from the center in the axial direction toward both ends, and the slider 2 is provided on each of the left and right screw shafts 3. With this configuration, each slider 2 can be operated symmetrically with respect to the reference line.
  • FIG. 11 shows a single-axis actuator having a configuration in which two independent ball screw shafts 3 and a slider 2 are arranged in a U-shaped recess of the guide rail 1. With this configuration, each slider 2 can be freely operated with respect to the reference line.

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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)

Abstract

Actionneur uniaxe, dans lequel un chemin de retour de bille, qui retourne des billes (4) d'un mécanisme de vis à bille depuis le point terminal vers le point de départ d'un chemin de roulement, est configuré à partir d'un trou traversant (24), qui pénètre dans un curseur (2) dans le sens de la longueur d'une tige filetée (3), et d'un déflecteur d'extrémité (6). Le déflecteur d'extrémité (6) possède un chemin de commutation de direction relié au trou traversant (24). Le corps principal (61) du déflecteur d'extrémité (6) est ajusté dans des parties encoches (26) formées dans les deux extrémités du corps principal (2A) de curseur dans le sens de la longueur de la tige filetée (3). Ainsi, la taille de la forme de section transversale perpendiculaire à la direction dans le sens de la longueur de la tige filetée du curseur peut être réduite quand le diamètre de la circonférence extérieure de la tige filetée est identique à celui d'un actionneur uniaxe qui utilise un tube de circulation pour former le chemin de retour de bille, et la capacité de charge peut être augmentée quand les dimensions dans le sens de la longueur de la tige filetée du curseur sont identiques.
PCT/JP2014/078096 2013-11-01 2014-10-22 Actionneur uniaxe WO2015064444A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE212014000209.5U DE212014000209U1 (de) 2013-11-01 2014-10-22 Einachsenaktuator
JP2015544944A JPWO2015064444A1 (ja) 2013-11-01 2014-10-22 一軸アクチュエータ

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP2013-227825 2013-11-01
JP2013227825 2013-11-01
JP2013251242 2013-12-04
JP2013-251242 2013-12-04
JP2013-261365 2013-12-18
JP2013261365 2013-12-18
JP2014-003814 2014-01-13
JP2014003814 2014-01-13
JP2014003895 2014-01-14
JP2014-003895 2014-01-14

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WO2015064444A1 true WO2015064444A1 (fr) 2015-05-07

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PCT/JP2014/078096 WO2015064444A1 (fr) 2013-11-01 2014-10-22 Actionneur uniaxe

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DE (1) DE212014000209U1 (fr)
WO (1) WO2015064444A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017219177A (ja) * 2016-06-10 2017-12-14 日本精工株式会社 一軸アクチュエータ
CN109083995A (zh) * 2017-06-14 2018-12-25 江苏联动轴承股份有限公司 一种带有防晃装置的滚珠丝杠
JP2023076938A (ja) * 2021-11-24 2023-06-05 上銀科技股▲分▼有限公司 リニア伝動装置
US11668378B1 (en) 2021-11-16 2023-06-06 Hiwin Technologies Corp. Linear transmission device
CN116928310A (zh) * 2023-08-24 2023-10-24 东莞市高技传动科技有限公司 自润滑低噪音精磨模组

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006342905A (ja) * 2005-06-09 2006-12-21 Nsk Ltd 搬送装置
JP2009121570A (ja) * 2007-11-14 2009-06-04 Nsk Ltd ボールねじ一体型直動案内ユニット
JP2010190367A (ja) * 2009-02-19 2010-09-02 Nsk Ltd ボールねじ及びそれを備えたボールねじ装置
JP2012219837A (ja) * 2011-04-04 2012-11-12 Nsk Ltd 潤滑剤供給体及び直動装置
WO2013140788A1 (fr) * 2012-03-22 2013-09-26 日本精工株式会社 Actionneur à axe unique

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3431354B2 (ja) 1995-06-22 2003-07-28 Ｔｈｋ株式会社 直線案内装置に用いるベアリングブロック成形体の製造方法
JP5428290B2 (ja) 2008-10-29 2014-02-26 日本精工株式会社 ボールねじ一体型直動案内ユニット

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006342905A (ja) * 2005-06-09 2006-12-21 Nsk Ltd 搬送装置
JP2009121570A (ja) * 2007-11-14 2009-06-04 Nsk Ltd ボールねじ一体型直動案内ユニット
JP2010190367A (ja) * 2009-02-19 2010-09-02 Nsk Ltd ボールねじ及びそれを備えたボールねじ装置
JP2012219837A (ja) * 2011-04-04 2012-11-12 Nsk Ltd 潤滑剤供給体及び直動装置
WO2013140788A1 (fr) * 2012-03-22 2013-09-26 日本精工株式会社 Actionneur à axe unique

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017219177A (ja) * 2016-06-10 2017-12-14 日本精工株式会社 一軸アクチュエータ
CN109083995A (zh) * 2017-06-14 2018-12-25 江苏联动轴承股份有限公司 一种带有防晃装置的滚珠丝杠
US11668378B1 (en) 2021-11-16 2023-06-06 Hiwin Technologies Corp. Linear transmission device
JP2023076938A (ja) * 2021-11-24 2023-06-05 上銀科技股▲分▼有限公司 リニア伝動装置
CN116928310A (zh) * 2023-08-24 2023-10-24 东莞市高技传动科技有限公司 自润滑低噪音精磨模组
CN116928310B (zh) * 2023-08-24 2024-05-14 东莞市高技传动科技有限公司 自润滑低噪音精磨模组

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