WO2024095552A1 - 揺動テーブル - Google Patents

揺動テーブル Download PDF

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Publication number
WO2024095552A1
WO2024095552A1 PCT/JP2023/028732 JP2023028732W WO2024095552A1 WO 2024095552 A1 WO2024095552 A1 WO 2024095552A1 JP 2023028732 W JP2023028732 W JP 2023028732W WO 2024095552 A1 WO2024095552 A1 WO 2024095552A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
attached
rolling bearing
slider
oscillating
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2023/028732
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
拓明 下吉
悟 加藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Thompson Co Ltd
Original Assignee
Nippon Thompson Co Ltd
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 Nippon Thompson Co Ltd filed Critical Nippon Thompson Co Ltd
Priority to KR1020257001587A priority Critical patent/KR20250026265A/ko
Priority to CN202380069744.6A priority patent/CN119998563A/zh
Priority to IL320584A priority patent/IL320584A/en
Priority to DE112023003960.7T priority patent/DE112023003960T5/de
Publication of WO2024095552A1 publication Critical patent/WO2024095552A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/02—Sliding-contact 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
    • F16C31/00—Bearings for parts which both rotate and move linearly
    • F16C31/04—Ball or roller bearings
    • F16C31/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • 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
    • 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
    • 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
    • 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
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • 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
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/61—Toothed gear systems, e.g. support of pinion shafts
    • 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

Definitions

  • a sliding device consisting of a base body and a sliding body is known (see, for example, Patent Document 1).
  • a meshing body such as a worm or pinion is used as the drive system.
  • the rack teeth that mesh with this meshing body are formed on the first sliding member side fixed to the base body or the second sliding member side fixed to the sliding body.
  • one of the objectives is to provide an oscillating table that allows for easy calculation of the service life, accurate positioning of the table section, and appropriate high-speed operation.
  • the oscillating table comprises a base portion, a linear motion mechanism including a rail attached to the base portion and a slider attached to the rail so as to be movable relative to the rail, a drive source for linearly reciprocating the slider, a first support portion attached to the slider and performing linear reciprocating motion together with the slider, a first rolling bearing attached to the first support portion, a table portion to which power from the drive source is transmitted for oscillating motion, a second support portion supporting the table portion, a second rolling bearing attached to the second support portion, and an eccentric shaft including a first shaft portion and a second shaft portion disposed in an eccentric position relative to the first shaft portion, the first shaft portion being supported by the first rolling bearing, and the second shaft portion being supported by the second rolling bearing.
  • the above-mentioned oscillating table makes it easy to calculate the service life, and allows accurate positioning of the table section, allowing for proper high-speed operation.
  • FIG. 1 is a schematic perspective view showing an oscillating table according to a first embodiment of the present disclosure.
  • FIG. 2 is a schematic plan view of the oscillating table shown in FIG.
  • FIG. 3 is a schematic side view of the oscillating table shown in FIG.
  • FIG. 4 is a schematic front view of the oscillating table shown in FIG.
  • FIG. 5 is a schematic perspective view showing the oscillating table in the first embodiment with a table portion, which will be described later, removed and some members indicated by dashed lines.
  • FIG. 6 is a schematic plan view of the oscillating table shown in FIG.
  • FIG. 7 is a schematic side view of the oscillating table shown in FIG.
  • FIG. 8 is a schematic front view of the oscillating table shown in FIG. FIG.
  • FIG. 9 is a schematic cross-sectional view of the rocking table shown in FIG. 5, including a base portion to be described later, cut along the YZ plane.
  • FIG. 10 is a schematic plan view of the oscillating table shown in FIG.
  • FIG. 11 is a schematic side view of the oscillating table shown in FIG.
  • FIG. 12 is a schematic front view of the oscillating table shown in FIG.
  • FIG. 13 is an enlarged view of region XIII shown in FIG.
  • FIG. 14 is a schematic side view of the oscillating table shown in FIG.
  • FIG. 15 is a schematic side view of the oscillating table showing a state in which a table portion, which will be described later, is tilted by oscillating.
  • FIG. 16 is a schematic side view of the rocking table before it is tilted, that is, showing a state in which a table portion, which will be described later, is horizontal.
  • the oscillating table of the present disclosure comprises a base portion, a linear motion mechanism including a rail attached to the base portion and a slider attached so as to be movable relative to the rail, a drive source for linearly reciprocating the slider, a first support portion attached to the slider and performing linear reciprocating motion together with the slider, a first rolling bearing attached to the first support portion, a table portion to which power from the drive source is transmitted and which can perform oscillating motion, a second support portion supporting the table portion, a second rolling bearing attached to the second support portion, and an eccentric shaft including a first shaft portion and a second shaft portion arranged in an eccentric position relative to the first shaft portion, the first shaft portion being supported by the first rolling bearing and the second shaft portion being supported by the second rolling bearing.
  • the slider included in the linear motion mechanism reciprocates linearly due to the power from the drive source.
  • the first support part attached to the slider reciprocates linearly together with the slider.
  • the table part attached to the second support part via the eccentric shaft oscillates with the linear reciprocating motion of the first support part.
  • the first shaft part of the eccentric shaft is supported by the first rolling bearing
  • the second shaft part of the eccentric shaft is supported by the second rolling bearing.
  • the configuration employs the first rolling bearing and the second rolling bearing, unlike the drive system employing the worm gear, no gap is generated, so the table part can be accurately positioned and is suitable for high-speed operation. Therefore, with such an oscillating table, the life calculation is easy, the table part can be accurately positioned, and high-speed operation can be performed appropriately.
  • accurate positioning of the table part means that the angle of inclination of the table part tilted by the oscillating motion can be accurately determined.
  • the linear motion mechanism may include a linear motion guide unit. This allows the table portion to oscillate smoothly and allows for more accurate positioning.
  • At least one of the first rolling bearing and the second rolling bearing may include an angular bearing.
  • the table portion can be oscillated smoothly while properly supporting the eccentric shaft, and accurate life calculations can be performed.
  • the driving source may include a ball screw having a ball screw nut attached to the screw shaft and the first support portion, and a motor that rotates the screw shaft.
  • the rotational motion of the motor can be converted into linear motion of the slider, allowing the table portion to oscillate more smoothly, and the rotation of the motor can be controlled to achieve high-speed operation and accurate positioning.
  • the direction in which an imaginary line segment connecting the center of the first shaft portion and the center of the second shaft portion extends may be horizontal when the table portion is horizontal.
  • the above-mentioned oscillating table may be provided with multiple sliders.
  • the first support part can be accurately moved back and forth in a straight line by multiple sliders, enabling more accurate positioning and high-speed operation.
  • the table portion may include a sliding portion having a sliding surface formed of a curved surface.
  • the base portion may include a guide portion formed of a curved surface, having a guide surface that contacts the sliding surface, and guiding the table portion. In this way, the rocking motion of the table portion can be made smoother by the sliding portion having the sliding surface and the guide portion having the guide surface.
  • the guide parts may be provided in pairs on either side of the rail. This allows the oscillating table part to be guided more appropriately.
  • FIG. 1 is a schematic perspective view showing a rocking table in the first embodiment of the present disclosure.
  • the Y direction is the direction in which a rail described later extends, and indicates the longitudinal direction of the rocking table
  • the X direction indicates the short side direction of the rocking table
  • the Z direction indicates the thickness direction (height direction) of the rocking table.
  • the X direction, the Y direction, and the Z direction are each perpendicular to each other.
  • FIG. 2 is a schematic plan view of the rocking table shown in FIG. 1.
  • FIG. 2 is a view of the rocking table shown in FIG. 1 as viewed in the direction indicated by the arrow II.
  • FIG. 1 is a schematic perspective view showing a rocking table in the first embodiment of the present disclosure.
  • the Y direction is the direction in which a rail described later extends, and indicates the longitudinal direction of the rocking table
  • the X direction indicates the short side direction of the rocking table
  • the Z direction indicates the thickness direction (height direction) of
  • FIG. 3 is a schematic side view of the rocking table shown in FIG. 1.
  • FIG. 3 is a view of the rocking table shown in FIG. 1 as viewed in the direction indicated by the arrow III.
  • FIG. 4 is a schematic front view of the rocking table shown in FIG. 1.
  • FIG. 4 is a view of the rocking table shown in FIG. 1 as viewed in the direction indicated by the arrow IV.
  • FIG. 5 is a schematic perspective view of the oscillating table in embodiment 1 with the table portion described below removed and some components indicated by dashed lines.
  • FIG. 6 is a schematic plan view of the oscillating table shown in FIG. 5.
  • FIG. 6 is a view of the oscillating table shown in FIG. 5 as viewed in the direction indicated by arrow VI.
  • FIG. 7 is a schematic side view of the oscillating table shown in FIG. 5.
  • FIG. 7 is a view of the oscillating table shown in FIG. 5 as viewed in the direction indicated by arrow VII.
  • FIG. 8 is a schematic front view of the oscillating table shown in FIG. 5.
  • FIG. 8 is a view of the oscillating table shown in FIG. 5 as viewed in the direction indicated by arrow VIII.
  • FIG. 9 is a schematic cross-sectional view of the rocking table shown in FIG. 5, including a base portion described later, cut along the Y-Z plane.
  • FIG. 10 is a schematic plan view of the rocking table shown in FIG. 9.
  • FIG. 10 is a view of the rocking table shown in FIG. 9, seen in the direction indicated by arrow X.
  • FIG. 11 is a schematic side view of the rocking table shown in FIG. 9.
  • FIG. 11 is a view of the rocking table shown in FIG. 9, seen in the direction indicated by arrow XI.
  • FIG. 12 is a schematic front view of the rocking table shown in FIG. 9.
  • FIG. 12 is a view of the rocking table shown in FIG. 9, seen in the direction indicated by arrow XII.
  • FIG. 13 is an enlarged view of region XIII shown in FIG. 10.
  • FIG. 14 is a schematic side view of the rocking table shown in FIG. 13.
  • FIG. 15 is a schematic side view of the rocking table showing a state in which a table portion described later is tilted by rocking.
  • FIG. 16 is a schematic side view of the rocking table before tilting, i.e., showing a state in which the table portion described later is horizontal.
  • the oscillating table 10 includes a base portion 11, a linear motion mechanism 12, a drive source 13, a first support portion 14, a first rolling bearing 15, a table portion 16, a second support portion 18, a second rolling bearing 19, and an eccentric shaft 20.
  • both the first rolling bearing 15 and the second rolling bearing 19 are angular bearings.
  • the base portion 11 is rectangular when viewed in the thickness direction, that is, the Z direction.
  • the base portion 11 is the base of the oscillating table 10, and each member is directly or indirectly attached to the base portion 11.
  • the base portion 11 includes a plate-shaped base plate 34 and a pair of guide portions 17a and 17b.
  • a pair of guide portions 17a and 17b are integrally formed with the base plate 34.
  • Guide portion 17a and guide portion 17b are spaced apart in the X direction to sandwich a rail 21 described later.
  • Guide portion 17a and guide portion 17b are each provided to rise from base plate 34.
  • Guide portion 17a is formed of a curved surface and has guide surface 29a that comes into contact with sliding surface 38a described later.
  • Guide portion 17b is formed of a curved surface and has guide surface 29b that comes into contact with sliding surface 38b described later.
  • Guide surface 29a and guide surface 29b are provided at the Z direction ends of guide portion 17a and guide portion 17b, respectively.
  • Guide surface 29a and guide surface 29b are each arc-shaped when viewed in the X direction.
  • Guide surface 29a and guide surface 29b have the same curvature.
  • Guide surface 29a and guide surface 29b guide table portion 16 during the swinging motion of table portion 16.
  • the linear motion mechanism 12 is a linear motion guide unit.
  • the linear motion mechanism 12 includes a rail 21 and multiple sliders, in this embodiment two sliders 22a and 22b.
  • the rail 21 is attached to the base portion 11, specifically, to the central region in the X direction of the base plate 34, so that the longitudinal direction is placed in the Y direction.
  • the rail 21 is attached and fixed to the base plate 34 by multiple bolts.
  • the rail 21 has a rail track surface on which the rolling elements roll that is recessed along the longitudinal direction.
  • Sliders 22a and 22b are each attached to rail 21.
  • Sliders 22a and 22b each have a slider track surface along which the rolling elements roll that is recessed along the longitudinal direction.
  • a plurality of rolling elements, for example balls, are provided between the slider track surface of slider 22a and the rail track surface.
  • a plurality of rolling elements, for example balls are provided between the slider track surface of slider 22b and the rail track surface.
  • Linear motion mechanism 12 which serves as a linear motion guide unit, can smoothly move sliders 22a and 22b back and forth in a straight line in the longitudinal direction of rail 21.
  • the driving source 13 causes the sliders 22a and 22b to perform a linear reciprocating motion.
  • the driving source 13 includes a ball screw 23 and a motor 24.
  • the ball screw 23 includes a ball screw nut 25 and a screw shaft 26.
  • the screw shaft 26 is arranged so that its longitudinal direction extends in the Y direction.
  • a screw groove is provided on the outer diameter surface of the screw shaft 26.
  • the screw shaft 26 is rotated by the motor 24.
  • the ball screw nut 25 is attached to the screw shaft 26, and rolling elements (balls) are arranged between the screw groove and a raceway surface provided on the ball screw nut 25.
  • the ball screw nut 25 performs a linear reciprocating motion in the Y direction, which is the longitudinal direction of the screw shaft 26.
  • the first support 14 is block-shaped and attached to the ball screw nut 25.
  • the first support 14 is also attached so as to be placed on the sliders 22a and 22b. That is, the ball screw nut 25, the first support 14, the sliders 22a and 22b are attached to each other and configured to move as one unit.
  • the first support 14 is provided with a through hole penetrating in the X direction, and the first rolling bearing 15 is attached in this through hole. In this embodiment, the first support 14 is attached so that the outer ring of the first rolling bearing 15 is fitted into the through hole provided in the first support 14.
  • the table portion 16 is plate-shaped and is attached so as to cover the base portion 11 in the Z direction.
  • the table portion 16 can be swung by power transmitted from a drive source.
  • the table portion 16 includes a mounting portion 27 having a plane 37 that can be parallel to the X-Y plane.
  • the plane 37 of the mounting portion 27 is the surface exposed in the Z direction.
  • the surface located on the opposite side of the plane 37 of the mounting portion 27 in the thickness direction faces the base portion 11. Due to the swiveling motion of the table portion 16, the plane 37 of the mounting portion 27 is inclined with respect to the horizontal direction.
  • flange portions 35a and 35b are provided that protrude toward the base plate 34.
  • the Z-direction end faces of the flange portions 35a and 35b are configured with curved surfaces.
  • the Z-direction end face of the flange portion 35a and the Z-direction end face of the flange portion 35b are each arc-shaped when viewed in the X direction.
  • the table portion 16 includes a sliding portion 28a having a sliding surface 38a formed of a curved surface.
  • the table portion 16 includes a sliding portion 28b having a sliding surface 38b formed of a curved surface.
  • the sliding portions 28a and 28b are each attached by bolts to the surface of the mounting portion 27 that faces the base plate 34.
  • the sliding portions 28a and 28b are each detachably attached to the mounting portion 27.
  • the sliding portion 28a is disposed so as to contact the flange portion 35a.
  • the sliding portion 28b is disposed so as to contact the flange portion 35b.
  • the sliding surfaces 38a and 38b are each arc-shaped when viewed in the X direction. The curvatures of the sliding surfaces 38a and 38b are the same.
  • the second support part 18 is attached to the table part 16 and supports the table part 16.
  • the second support part 18 is attached to the surface of the mounting part 27 of the table part 16 that faces the base plate 34.
  • the second support part 18 is also block-shaped. Specifically, when viewed in the X direction, the second support part 18 has a tapered portion whose width in the Y direction narrows as it approaches the base part 11.
  • the second support part 18 is provided with a through hole that penetrates in the X direction, and the second rolling bearing 19 is attached in this through hole.
  • the second support part 18 is attached so that the outer ring of the second rolling bearing 19 is fitted into the through hole provided in the second support part 18.
  • the eccentric shaft 20 is attached so that its axial direction is in the X direction.
  • the eccentric shaft 20 includes a first shaft portion 31, a second shaft portion 32, and a connecting portion 33.
  • the connecting portion 33 is plate-shaped and is provided to connect the first shaft portion 31 and the second shaft portion 32.
  • the second shaft portion 32 is disposed in an eccentric position relative to the first shaft portion 31. Specifically, the X-direction end of the first shaft portion and the X-direction end of the second shaft portion 32 are connected in a state in which the centers of the respective shaft portions are shifted, i.e., in an eccentric state.
  • the eccentric shaft 20 rotates around the center 36b of the second shaft portion 32. In this case, the second shaft portion 32 rotates on its own axis.
  • the first shaft portion 31 revolves around the center 36b of the second shaft portion 32 as the rotation center.
  • the center 36a of the first shaft portion 31 and the center 36b of the second shaft portion 32 are illustrated in Figures 15 and 16.
  • the eccentric shaft 20 is supported by the first rolling bearing 15 and the second rolling bearing 19.
  • the first shaft portion 31 of the eccentric shaft 20 is supported by the first rolling bearing 15.
  • the second shaft portion 32 of the eccentric shaft 20 is supported by the second rolling bearing 19.
  • the first shaft portion 31 is fitted inside the inner ring included in the first rolling bearing 15.
  • the second shaft portion 32 is fitted inside the inner ring included in the second rolling bearing 19.
  • the table portion 16 specifically the plane 37 of the mounting portion 27, is horizontal
  • the direction in which the virtual line segment 39 connecting the center 36a of the first shaft portion 31 and the center 36b of the second shaft portion 32 extends is horizontal.
  • the virtual line segment 39 is illustrated by a dashed line in Figures 15 and 16.
  • this virtual line segment 39 also tilts.
  • the screw shaft 26 of the ball screw 23 rotates due to the transmission of rotational force from the motor 24.
  • the first support portion 14 also performs linear motion.
  • the eccentric shaft 20 rotates in response to the linear motion of the first support portion 14. Due to the rotation of the eccentric shaft 20, the table portion 16 oscillates together with the second support portion 18, guided by the guide surfaces 29a of the pair of guide portions 17a and the guide surfaces 29b of the pair of guide portions 17b.
  • the oscillation of the table portion 16 causes the flat surface 37 of the mounting portion 27 to tilt.
  • the sliders 22a and 22b included in the linear motion mechanism perform linear reciprocating motion due to power from the drive source 13.
  • the first support portion 14 attached to the sliders 22a and 22b performs linear reciprocating motion together with the sliders 22a and 22b.
  • the table portion 16 attached to the second support portion 18 via the eccentric shaft 20 performs an oscillating motion in conjunction with the linear reciprocating motion of the first support portion 14.
  • the first shaft portion 31 of the eccentric shaft 20 is supported by the first rolling bearing
  • the second shaft portion 32 of the eccentric shaft 20 is supported by the second rolling bearing 19.
  • this configuration makes it easy to calculate the lifespan based on fatigue of the rolling elements, etc.
  • the table portion 16 can be accurately positioned and is suitable for high-speed operation. Therefore, with such a rocking table 10, it is easy to calculate the lifespan, the table portion 16 can be accurately positioned, and high-speed operation can be performed appropriately.
  • the linear motion mechanism 12 includes a linear motion guide unit. This allows the table portion 16 to oscillate smoothly and to be positioned more accurately.
  • both the first rolling bearing and the second rolling bearing are angular bearings. Therefore, the table portion 16 can be swung smoothly while properly supporting the eccentric shaft 20, and accurate life calculations can be performed.
  • the driving source 13 includes a ball screw 23 having a ball screw nut 25 attached to the screw shaft 26 and the first support portion 14, and a motor 24 that rotates the screw shaft 26. Therefore, the rotational motion of the motor 24 can be converted into linear motion of the sliders 22a and 22b, making it possible to more smoothly oscillate the table portion 16, and by controlling the rotation of the motor 24, high-speed operation and accurate positioning can be achieved.
  • multiple sliders 22a and 22b are provided. Therefore, the multiple sliders 22a and 22b allow the first support portion 14 to accurately perform linear reciprocating motion, allowing for more accurate positioning and high-speed operation.
  • the table portion 16 includes a sliding portion 28a having a sliding surface 38a formed of a curved surface, and a sliding portion 28b having a sliding surface 38b formed of a curved surface.
  • the base portion 11 includes a guide portion 17a formed of a curved surface, having a guide surface 29a in contact with the sliding surface 38a, and guiding the table portion 16, and a guide portion 17b formed of a curved surface, having a guide surface 29b in contact with the sliding surface 38b, and guiding the table portion 16.
  • the rocking motion of the table portion 16 can be made smoother by the sliding portion 28a and the sliding portion 28b having the sliding surface 38a and the sliding surface 38b, respectively, and the guide portion 17a and the guide portion 17b having the guide surface 29a and the guide surface 29b, respectively.
  • the guide portion 17a and the guide portion 17b are provided as a pair on either side of the rail 21. This allows the oscillating table portion 16 to be guided more appropriately.
  • the guide portion 17a and the guide portion 17b are provided as a pair to sandwich the rail 21, but this is not limiting, and only one of them may be provided.
  • multiple sliders 22a and sliders 22b are provided, but this is not limited, and there may be only one slider.
  • the driving source 13 includes a ball screw 23 having a ball screw nut 25 attached to the screw shaft 26 and the first support portion 14, and a motor 24 that rotates the screw shaft 26.
  • the driving source 13 may use other mechanisms capable of linear reciprocating motion, such as a linear motor.
  • a linear guide unit is used as the linear motion mechanism, but this is not limited to this, and other linear motion mechanisms may be adopted.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Machine Tool Units (AREA)
  • Bearings For Parts Moving Linearly (AREA)
PCT/JP2023/028732 2022-10-31 2023-08-07 揺動テーブル Ceased WO2024095552A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020257001587A KR20250026265A (ko) 2022-10-31 2023-08-07 요동 테이블
CN202380069744.6A CN119998563A (zh) 2022-10-31 2023-08-07 摆动台
IL320584A IL320584A (en) 2022-10-31 2023-08-07 Rocking table
DE112023003960.7T DE112023003960T5 (de) 2022-10-31 2023-08-07 Schwenktisch

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022-174481 2022-10-31
JP2022174481A JP7635190B2 (ja) 2022-10-31 2022-10-31 揺動テーブル

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08211173A (ja) * 1995-02-07 1996-08-20 Kazuya Hirose 多自由度位置決めステージ
JP2008240773A (ja) * 2007-03-26 2008-10-09 Thk Co Ltd 自在走行アクチュエータ
JP2013103303A (ja) * 2011-11-15 2013-05-30 Yoshiharu Nakatomi ステージ機構およびステージ機構の製造方法
JP2017095194A (ja) * 2015-11-18 2017-06-01 日本精工株式会社 搬送装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4464496B2 (ja) 1999-09-30 2010-05-19 日本ベアリング株式会社 摺動装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08211173A (ja) * 1995-02-07 1996-08-20 Kazuya Hirose 多自由度位置決めステージ
JP2008240773A (ja) * 2007-03-26 2008-10-09 Thk Co Ltd 自在走行アクチュエータ
JP2013103303A (ja) * 2011-11-15 2013-05-30 Yoshiharu Nakatomi ステージ機構およびステージ機構の製造方法
JP2017095194A (ja) * 2015-11-18 2017-06-01 日本精工株式会社 搬送装置

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