WO2019182327A1 - Dispositif de guidage de déplacement linéaire - Google Patents

Dispositif de guidage de déplacement linéaire Download PDF

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Publication number
WO2019182327A1
WO2019182327A1 PCT/KR2019/003190 KR2019003190W WO2019182327A1 WO 2019182327 A1 WO2019182327 A1 WO 2019182327A1 KR 2019003190 W KR2019003190 W KR 2019003190W WO 2019182327 A1 WO2019182327 A1 WO 2019182327A1
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WO
WIPO (PCT)
Prior art keywords
block
longitudinal direction
outer circumferential
curved portion
block body
Prior art date
Application number
PCT/KR2019/003190
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English (en)
Korean (ko)
Inventor
이택원
서철
권혁도
손기동
Original Assignee
(주)원에스티
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
Priority claimed from KR1020180033762A external-priority patent/KR20190111521A/ko
Priority claimed from KR1020180033759A external-priority patent/KR102061550B1/ko
Application filed by (주)원에스티 filed Critical (주)원에스티
Publication of WO2019182327A1 publication Critical patent/WO2019182327A1/fr

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    • 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

Definitions

  • the present invention is a linear motion guide device, it is assembled to move on the track rail, noise is suppressed during operation and operation failure due to foreign matter due to damage and damage during operation, the ball smoothly rolls during operation and generates noise
  • This relates to a linear motion guide device that is suppressed.
  • a linear motion guide device having a straight track rail As the rolling guide device, a linear motion guide device having a straight track rail, a curved motion guide device having a curved guide rail and a ball screw device are known.
  • FIG. 1 is a cross-sectional view of the linear motion guide device 10 in the longitudinal direction of the guide rail 1 on the guide rail 1 via a ball train consisting of a guide rail 1 and a plurality of balls 5 as rolling elements.
  • the slider main body 2 provided so that a movement is possible is provided.
  • the slider body 2 is provided with a block body 3 and a pair of end caps 4 which are provided at both ends of the block body 3 and form a direction change path 15.
  • the block body 3 has an inverted U-shaped cross section, and includes a horizontal portion 8 facing the upper surface of the guide rail 1 and a pair of skirt portions 9 respectively facing both sides of the guide rail 1. Equipped.
  • ball retaining portions 12 are provided between the upper and lower rail circumferential grooves 1a.
  • An electric pole in which the rolling element 5 is poled by the block pole groove 3a and the rail pole groove 1a is formed.
  • the return passage 3b is formed by a guide member 14 which is a return passage member inserted into the through hole 13 formed in each skirt portion 9.
  • the guide member 14 is provided in the form of a cylindrical hollow body.
  • the end cap 4 has an inverted U-shaped cross section corresponding to the shape of the block body 3.
  • the turning path 15 for raising the ball 5 from the block electroplating groove 3a is formed to guide the ball 5 to the return passage 3b.
  • the end cap 4 is provided with an outer circumferential guide portion 4a that forms the direction change path 15, and a round single part 6 constituting the inner circumferential guide portion 6a at the end of the block body 3 is provided. It is provided, the direction change path 15 is formed by the inner circumferential guide (6a) and the outer circumferential guide (4a).
  • the end cap 4 is fixedly coupled to the round unit part 6.
  • the ball retaining portion 12 is provided around the rail pole groove 1a, and the guide member 14, which is a member for forming a round unit part 6, which is an inner circumferential portion of the direction change path 15, and a rolling element return passage, It is provided integrally coupled to the block body 3 by inserting the block body 3 with a molding die.
  • the rolling element 5 When the slider main body 2 is moved to one side in the longitudinal direction of the guide rail 1, the rolling element 5 is an electric pole, the direction change path 15 of one end, the return passage 3b, and the direction change of the other end.
  • the rolling element 5 When the slider main body 2 is moved to the other side in the longitudinal direction of the guide rail 1, the rolling element 5 returns to the return passage 3b, the direction change path 15 of one end, the electric pole, and the direction change of the other end. Endless circulation is performed while passing through the furnace 15 and the return passage 3b.
  • the rolling element passes the boundary between the inner circumferential guide portion 6a of the round one-piece part 6 which is the "A" part of FIG. 3 and the rolling element pole paths 1a and 3a, the inner circumference of the round one-piece part 6 at the boundary part. It is preferable that the end of the guide portion 6a and the end of the block pole groove 3a of the block body 3 coincide with each other, but the block body 3 is made of metal and the round unit part 6 is made of synthetic resin.
  • Tolerance management is not easy, and when forming the round unit part 6, dimensional tolerances occur during the cooling process, it is not easy to accurately adjust the height of the height of both ends, the inner peripheral guide part of the round unit part 6 When the end of 6a is protruded high, there is a risk of breakage at the end due to contact with rolling element 5, and when the end of the pole groove 3a of block body 3 is protruding because of high rolling element 5 There was a problem that the noise caused by the contact with and damage to the rolling element (5) All.
  • FIG. 7 is a partially cutaway perspective view of the linear motion guide device 10, the guide rail 1 being guided on the guide rail 1 via a ball train composed of a guide rail 1 and a plurality of balls 5 as rolling elements.
  • the slider main body 2 provided so that the movement to the longitudinal direction of () is provided.
  • the slider body 2 is provided with a block body 3 and a pair of end caps 4 which are provided at both ends of the block body 3 and form a direction change path.
  • the block body 3 has an inverted U-shaped cross section, and includes a horizontal portion facing the upper surface of the guide rail 1 and a pair of skirt portions respectively opposite to both sides of the guide rail 1.
  • On the inner side surface of each of the left and right skirt portions a block electroplating groove 3a corresponding to the rail electroplating groove 1a formed on the right and left surfaces of the guide rail 1 is formed.
  • An electric pole in which the rolling element 5 is poled by the block pole groove 3a and the rail pole groove 1a is formed.
  • the skirt portion is formed with a return passage 3b extending in the axial direction in which the rolling element returns from one end to the other end of each block electroplating groove 3a.
  • the return passage 3b is formed in the same number as the block electroplating groove 3a.
  • the block pole groove 3a and the return passage 3b are provided side by side to form a circulation path in which the balls 5 circulate together.
  • the end cap 4 has an inverted U-shaped cross section corresponding to the shape of the block body 3. As shown in FIG. 8, the end cap 4 is formed in a concave arcuate shape with an outer circumferential guide portion 4a forming a direction change path.
  • the round unit part 6 constituting the inner circumferential guide portion 6a is provided at the end of the block body 3, and the direction change path is formed by the inner circumferential guide portion 6a and the outer circumferential guide portion 4a.
  • the end cap 4 is fixedly coupled to the round unit part 6.
  • the round unit 6 is provided integrally coupled to the block body 6 by inserting the block body 6 into a molding die.
  • the rolling element 3 When the slider main body 2 is moved to one side in the longitudinal direction of the guide rail 1, the rolling element 3 is an electric pole, a change of direction of one end, a return passage 3b, a change of direction of the other end, a pole Infinite cycles through the furnace; When the slider main body 2 is moved to the other side in the longitudinal direction of the guide rail 1, the rolling element 5 returns to the return passage 3b, the change direction of one end, the electric pole, the change direction of the other end, and return. Infinite circulation while passing through the passage (3b) in turn.
  • the trajectory of the outer circumferential guide 4a and the inner circumferential guide 6a forms a semicircle, and is formed by the outer circumferential guide 4a and the inner circumferential guide 6a.
  • the trajectory also forms a semicircle to form a leading semicircle that connects the center of the ball 5 traveling through the direction change path.
  • the linear motion guide device 10 when the slider main body 2 is driven, the movement of the rolling element (entrance side rolling element) that enters the direction change path from the electric main road and the direction that exits the electric pole from the direction change path Due to the difference of moving body (outlet rolling element) moving amount, the gap between rolling elements is not constant and collision between rolling elements occurs, and some rolling elements have a sliding element, which makes noise and friction increases. There was a problem that damage occurs in the turning direction or the rolling element.
  • the present invention is proposed to solve the problems of the prior art as described above, it is not necessary to strictly manage the manufacturing tolerances, easy to manufacture, reduced production costs, rolling elements or rounds that can be caused by rolling elements It is an object of the present invention to provide a linear motion guide device capable of suppressing damage to a single part and preventing generation of noise.
  • an object of the present invention is to provide a linear motion guide device in which a ball passing through a redirection path smoothly passes through a redirection path, thereby preventing collision of the ball company and sliding of the ball.
  • the guide rail is formed with a rail pole groove extending in the longitudinal direction on both sides, the guide rail is provided to be movable in the longitudinal direction block
  • the block body is recessed in the longitudinal direction in the block body toward the guide rail is formed in the block pole grooves, parallel to the block pole grooves are formed in the through hole penetrated in the longitudinal direction;
  • the block electroplating groove is formed with a rail electroplating groove, the electric raceway is rolled around the rolling element, the through hole is provided with a guide member for forming a return passage on the inside made of synthetic resin; Round one-piece parts made of synthetic resin are provided at both ends of the longitudinal direction of the block body;
  • the round unit part is formed with an inner circumferential guide portion toward the end cap, and the end cap is formed with an outer circumferential guide portion forming a direction change path together with the inner circumferential guide portion on the side toward the
  • the one-piece inclination portion is characterized in that formed inclined outward in the longitudinal direction.
  • the one-piece first end is lower than the block end which is the end of the block body and the two-piece single end is higher than the block end.
  • block inclined portions are formed at both ends in the longitudinal direction of the block pole grooves, and the distance between the block pole grooves and the track pole grooves is characterized by increasing toward the block end.
  • the guide rail is formed with a rail pole groove extending in the longitudinal direction on both sides, the guide rail is provided to be movable in the longitudinal direction block
  • a slide body including end caps positioned at both ends of the body and the longitudinal direction of the block body
  • the block body is provided with a block pole groove forming an electric pole along with a rail pole groove along a longitudinal direction on a surface facing the guide rail, and a return passage being a through-hole which is parallel to the block pole groove;
  • Round one ends are provided at both ends in the longitudinal direction of the block body to form a curved turning direction in which one side communicates with the main circumference and the other side communicates with the return passage between the end caps;
  • the direction change path consists of an outer circumferential guide portion formed concave on the inner surface of the end cap and an inner circumferential guide portion formed on the surface facing the end cap of the round unit part;
  • the path line which is a line extending from the center of the ball passing through the redirection
  • the path line is a first straight portion on the electric pole side, a first curved portion connected to the first straight portion, a second straight portion on the return passage side, and a second curved portion connected to the second straight portion.
  • a third curved portion connected at both sides to the first curved portion and the second curved portion;
  • the third curved portion has a larger radius of curvature than the first curved portion and the second curved portion and is circumscribed by the first curved portion and the second curved portion.
  • first straight portion is a tangent to the first curved portion and the second straight portion is a tangent to the second curved portion;
  • the first straight portion and the second straight portion are characterized in that parallel.
  • first curved portion and the second curved portion pass through the inner and outer center of the first straight portion and the second straight portion and are located inside and outside, respectively, with respect to the center line parallel to the first straight portion and the second straight portion;
  • the first curved portion is an arc and the center of the radius of curvature is spaced inwardly away from the centerline
  • the second curved portion is an arc and the center of the radius of curvature is spaced outwardly away from the centerline;
  • the third curved portion is a circular arc and the center is located on the centerline and characterized in that the center of the slider body eccentrically located in the longitudinal direction than the center of the first curved portion and the second curved portion.
  • the outer circumferential guide portion includes a first outer circumferential curve portion located toward the main road, a second outer circumferential curve portion located toward the return path, and a third outer circumferential curve provided between the first outer circumferential curve portion and the second outer circumferential curve portion.
  • the third outer circumference portion circumscribes the first outer circumference portion and the second outer circumference portion;
  • the radius of curvature of the third outer circumference portion may be greater than the radius of curvature of the first outer circumference portion and the second outer circumference portion.
  • the outer circumferential guide portion further comprises a first outer circumferential portion connected to the first outer circumferential portion opposite the third outer circumferential portion, and a second outer circumferential straight portion connected to the second outer circumferential portion opposite to the third outer circumferential portion;
  • the first outer circumferential linear portion is a tangent to the first outer circumferential curve portion
  • the second outer circumferential linear portion is a tangent to the second outer circumferential curve portion
  • the first outer circumferential linear portion and the second outer circumferential linear portion are parallel to each other.
  • the rolling element 130 when the rolling element 130 is rolled from the direction change path 115 to the electric pole by operation, the rolling element 130 does not contact the block end 110b. Since the electric pole is moved to the block electroplating groove 110, the damage of the rolling element 130 or the damage and deformation of the block end 110 b is prevented. On the contrary, the rolling element 130 can be moved from the electric pole to the turning path 115.
  • the rolling element 130 firstly contacts the single-piece inclined portion 116-1 and passes over the single-piece second end portion 116b, the shock caused by the rolling element 130 is alleviated to damage the round single-piece portion 116. Or deformation is prevented, and the occurrence of noise or vibration is minimized and the lifespan due to damage is prevented.
  • the rolling of the rolling element 150 when the rolling element 150 is shifted from the electric pole to the turning direction and the rolling of the rolling element 150 to be moved from the turning path to the electric pole is smoothly prevented, so that the rolling of the rolling element 150 is prevented. Even without the form, the collision between the rolling elements 150 is prevented from occurring, noise is suppressed, and the friction caused by the sliding running can be prevented from increasing, and there is an effect of preventing the shortened life due to damage.
  • FIG. 1 is a cross-sectional view of a linear motion guide device according to the prior art
  • FIG. 2 is a side cross-sectional view of the linear motion guide device shown in FIG.
  • FIG. 3 is a cross-sectional view showing a direction change passage of the linear motion guide device shown in FIG. 1,
  • FIG. 5 is a side cross-sectional view of the moving block shown in FIG. 4,
  • Figure 6 is a cross-sectional view corresponding to Figure 3 showing a linear motion guide device according to the present invention
  • FIG. 7 is a partially cutaway perspective view of a linear motion guide device according to the prior art
  • FIG. 8 is a perspective view of an end cap provided in the linear motion guide device of FIG.
  • FIG. 9 is a longitudinal cross-sectional view of the linear motion guide device of FIG. 7 illustrating a circulation path and a rolling element
  • FIG. 10 is a cross-sectional view of the linear motion guide device according to the invention corresponding to FIG.
  • FIG. 11 is a view illustrating a direction change path of the linear motion guide device according to the present invention.
  • Figure 6 is a cross-sectional view corresponding to Figure 3 showing a linear motion guide device according to the present invention.
  • the linear motion guide device 100 is a guide rail 120 having a rod-shaped rail pole groove 105 extending in the longitudinal direction to both sides, and moves along the longitudinal direction to the guide rail 120. It is provided with a slide body 140, which is possibly provided and includes a block body 160 and the end cap 170. At least one rail pole groove 105 may be formed on both side surfaces of the guide rail 120. The end cap 170 is provided at both ends of the block body 160 in the longitudinal direction.
  • the guide rail 120 and the block body 160 is made of metal, and the end cap 170 may be made of synthetic resin such as nylon 6.
  • the block body 160 has a cross-sectional shape formed in a "reverse U” shape and includes a horizontal part positioned at an upper portion of the guide rail 120 and a skirt part provided at both sides of the horizontal part to face a side surface of the guide rail.
  • the end cap 170 is provided at both ends of the block body 160 and corresponds to the block body 160 so that the end cap 170 is formed in an inverse U shape.
  • the block main groove 190 is formed in the block body 160 to be concave along the longitudinal direction on the surface facing the guide rail 120.
  • the block pole groove 190 is formed in the same number as the rail pole groove 105.
  • the block pole groove 190 forms a raceway in which the rolling element 130 poles together with the rail pole groove 105.
  • the block body 160 has a through hole 161 formed in parallel with the block pole groove 190 and penetrated in the longitudinal direction.
  • the through holes 161 are formed in the same number as the block electroplating grooves 190.
  • the through hole 161 is provided with a guide member 140 made of synthetic resin to form a return passage 111 inside.
  • An example of the guide member 140 may be a synthetic resin, which is a cylindrical hollow body, and the inner side of the guide member 140 becomes the return passage 111.
  • Both ends of the block body 160 in the longitudinal direction are provided with a round unit part 116 made of synthetic resin.
  • the guide member 140 and the round unit part 116 may be injection molded by using the block body 160 as an insert, and the guide member 140 and the round unit part 116 may be integrally provided. .
  • the round unit part 116 is provided at both ends of the longitudinal direction of the block body 160, the end cap 170 is coupled to the round unit part 116 is provided at both ends of the longitudinal direction of the block body 160 Can be.
  • the round unit part 116 is provided in a form protruding toward the end cap 170, the outer surface is formed with an inner circumferential guide portion 115b having a concave groove shape.
  • the trajectory of the inner circumferential guide portion 115b follows a convex curved shape.
  • the end cap 170 is formed with an outer circumferential guide portion 115a that forms a direction change path 115 together with an inner circumferential guide portion 115b on the side facing the round unit part 116.
  • the cross section of the outer circumferential guide portion 115a has a concave groove shape, and the trajectory has a concave curved shape.
  • the direction change path 115 formed by the inner circumferential guide portion 115b and the outer circumferential guide portion 115a has a curved shape protruding in the longitudinal direction as shown in FIG. 6.
  • the direction change paths 115 are formed on both sides of the slide body 140 in the longitudinal direction.
  • the direction change path 115 is connected to the main road to one side and to the return passage 111 to the other side.
  • the direction change paths 115 on both sides in the longitudinal direction, and the electric poles and the return passages 111 form a circulation path through which the rolling element 130 circulates.
  • a single piece inclination part 116-1 is formed at an end of the round unit part 116 in contact with the block body 160.
  • the single part slope 116-1 is formed to be inclined outward in the longitudinal direction. Therefore, as shown in the cross section of FIG. 6, the extension line of the single-piece inclined portion 116-1 faces outward in the longitudinal direction and toward the guide rail 120.
  • the single unit first end 116a is an end of the block body 160 which is an end of the block body 160.
  • the block end 190a protrudes from the single unit first end 116a
  • the single unit second end 116b is higher than the block end 190a and the single unit second end 116b is the block end 190a. More protruding. Therefore, the extension line of the block pole groove 190 is connected to the one piece inclination portion (116-1).
  • the single second end portion 116b is formed in a round shape.
  • Block inclined portions 190a are formed at both ends of the block pole groove 190 in the longitudinal direction. It is formed to be inclined so as to lower the protruding height toward the end, the distance between the block pole groove 190 and the track pole groove 105 becomes larger toward the block end (190a).
  • the rolling element 130 When the slide body 140 moves in the longitudinal direction along the guide rail 120 in the linear motion guide device 100, the rolling element 130 is circulated along the circulation path.
  • the rolling element 130 When the rolling element 130 is moved from the direction change path 115 to the rolling pole, the rolling element 130 is not moved in contact with the block end 190a and rolls into the block rolling groove 190 so that the rolling element 130 of the rolling element 130 is rotated. Damage or deformation of the block end 190a is prevented.
  • the rolling element 130 when the rolling element 130 is moved from the electric pole to the direction change path 115, the rolling element 130 primarily contacts the single part inclination part 116-1 and rides over the second end part 116b separately. Therefore, the impact caused by the rolling element 130 is alleviated to prevent damage or deformation of the round unit part 116.
  • the single end of the second end 116b is preferably formed in a round shape rather than attached to prevent damage or deformation.
  • FIG. 10 is a cross-sectional view of the linear motion guide device according to the present invention corresponding to FIG. 9, and FIG. 11 is a diagram illustrating a direction change path of the linear motion guide device according to the present invention.
  • the linear motion guide device 100 includes a guide rail 110 having a rod-shaped rail pole groove 110a extending in the longitudinal direction to both sides, and moving along the longitudinal direction to the guide rail 110.
  • the slide body 120 includes a block body 123 and an end cap 124. At least one rail pole groove 110a may be formed at each side of the guide rail 110.
  • the end cap 124 is disposed at both ends of the block body 123 in the longitudinal direction.
  • the guide rail 110 and the block body 123 is made of metal, the end cap 124 may be made of synthetic resin, such as nylon 6.
  • the block body 123 is formed in a cross-sectional shape of "inverted U” shape is provided on both sides of the horizontal portion and the horizontal portion located on the upper side of the guide rail 110 and the skirt facing the side of the guide rail 110 It is made of wealth.
  • the end cap 124 is provided at both ends of the block body 123, and has a cross-section "inverse U” shape corresponding to the block body 123.
  • the block circumferential groove 123a is formed in the block body 123 to be concave along the longitudinal direction on the surface facing the guide rail 110.
  • the block pole grooves 123a are formed in the same number as the rail pole grooves 110a.
  • the block pole groove 123a forms a raceway along which the rolling element 150 poles together with the rail pole groove 110a.
  • the block body 123 is provided with a through hole 123b which is parallel to the block electric groove 123a and penetrates in the longitudinal direction.
  • the through holes 123b are formed in the same number as the block electroplating grooves 123a.
  • the through hole 123b forms a return passage through which the ball 150 returns to the electric pole.
  • the through hole 123b may be provided with a guide member which is a pipe member made of synthetic resin to form a return passage therein.
  • Both ends of the block body 123 in the longitudinal direction are provided with a round unit part 116 made of synthetic resin.
  • the guide member and the round unit part 126 may be provided by injection molding using the block body 160 as an insert.
  • the guide member 140 and the round unit part 116 may be integrally injected. Can be molded.
  • the round unit part 126 is provided at both ends of the block body 123 in the longitudinal direction, and the end cap 124 is coupled to the round unit part 125 and is disposed at both ends of the block body 123 in the longitudinal direction. Can be.
  • the round unit part 126 is provided in a form protruding toward the end cap 124, the outer surface is formed with an inner circumferential guide portion 126a having a concave groove shape.
  • the trajectory of the inner circumferential guide portion 126a follows a convex curved shape.
  • the end cap 124 is formed with an outer circumferential guide portion 124a forming a direction change path together with an inner circumferential guide portion 126a on the side facing the round unit part 126.
  • the cross section of the outer circumferential guide portion 124a has a concave groove shape, and the trajectory has a concave curved shape.
  • the direction change path formed by the inner circumferential guide part 126a and the outer circumferential guide part 124a has a curved shape protruding in the longitudinal direction as shown in FIGS. 10 and 11.
  • the direction change paths are formed at both sides in the longitudinal direction of the slide body 120.
  • the redirection path communicates with the main path on one side and the return path on the other side.
  • the direction change paths on both sides in the longitudinal direction, and the electric main road and the return passage form a circulation path through which the rolling element 150 circulates.
  • the path line BR is not formed of one arc, It consists of a plurality of curves.
  • the path line BR includes a first curved portion BR1 on the electric pole side, a second curved portion BR2 on the return passage side, and a first curved portion BR1 and a second curved portion BR2 on both sides. It comprises a third curved portion BR3 connected to.
  • the first curved portion BR1, the second curved portion BR2, and the third curved portion BR3 each have a circular arc shape that is part of a circle.
  • the third curved portion BR3 has a larger radius of curvature than the first curved portion BR1 and the second curved portion BR2, and is externally connected to the first curved portion BR1 and the second curved portion BR3.
  • the radius of curvature of the first curved portion BR1 and the second curved portion BR3 has the same magnitude.
  • the path line BR of the rolling element 150 for rolling the direction change path includes a plurality of curves as described above, so that the rolling elements 150 are maintained at the rolling element 150. As a result, the load acting on the turning path is kept constant.
  • the path line BR is connected to the first curved portion BR1 on the opposite side of the third curved portion BR3 and positioned on the electric pole road side, and is opposite to the third curved portion BR3. And a second straight portion BR5 connected to the second curved portion BR2 and positioned on the return passage side.
  • the first straight portion BR4 is a tangent of the first curved portion BR1
  • the second straight portion BR5 is a tangent of the second curved portion BR2
  • the first straight portion BR4 and the second are straight.
  • the straight portions BR5 are parallel to each other and extend in the longitudinal direction.
  • the first curved portion BR1 and the second curved portion BR1 pass through the inner and outer directions of the first straight portion BR4 and the second straight portion BR5, and the first straight portion BR4 and the second straight line. It is located inside and outside with respect to the center line CL which is a line parallel with the part BR5, respectively.
  • a center of the radius of curvature of the first curved portion BR1 is spaced apart inward from the center line CL, and a center of the radius of curvature of the second curved portion BR2 extends outward from the center line CL. Are spaced apart.
  • the center of the radius of curvature of the third curved portion BR3 is located on the center line CL and is longer in the longitudinal direction of the slider body 2 than the centers of the first curved portion BR1 and the second curved portion BR2. Eccentrically located in the center direction.
  • the outer circumferential guide portion 124a includes a first outer circumferential curve portion 124a-1 positioned toward the electric pole, a second outer circumferential curve portion 124a-2 positioned toward the return passage, and the first outer circumferential curve portion 124a. -3) and a third outer circumferential curve portion 124a-3 provided between the second outer circumferential curve portion 124a-2.
  • the outer circumferential guide portion 124a includes a first outer circumferential linear portion 124a-4 connected to the first outer circumferential curve portion 124a-1 and a third outer circumferential curve portion opposite to the third outer circumferential curve portion 124a-3.
  • a second outer circumferential line portion 124a-5 connected to the second outer circumference curve portion 124a-2 opposite to 124a-3.
  • the length of the first outer circumferential linear portion 124a-4 is shorter than the length of the second outer circumferential linear portion 124a-5.
  • the paths of the first outer circumferential curve portion 124a-1, the second outer circumferential curve portion 124a-2, and the third outer circumferential curve portion 124a-3 are circular arcs that form part of a circle.
  • the third outer circumference portion 124a-3 is externally connected to the first outer circumference portion 124a-1 and the second outer circumference portion 124a-1.
  • the radius of curvature of the third outer circumference portion 124a-3 is greater than the radius of curvature of the first outer circumference portion 124a-1 and the second outer circumference portion 124a-2, and the first outer circumference portion 124a-.
  • the radius of curvature of 1) and the second outer circumferential curve portion 124a-2 are the same size.
  • the first outer circumference linear portion 124a-4 is a tangent of the first outer circumference curve portion 124a-1
  • the second outer circumference linear portion 124a-5 is a tangent of the second outer peripheral curve portion 124a-2.
  • the first outer circumferential linear portion 124a-4 and the second outer circumferential linear portion 124a-5 are parallel to each other and extend in the longitudinal direction.
  • the ball which is the rolling element 150, travels while pressing the outer guide portion 124a in the direction change path by the centrifugal force.
  • the path of the outer circumferential guide portion 124a is formed in a plurality of curves and in addition to a straight line at both ends, the external force that the rolling element 150 presses the outer circumferential guide portion 124a does not change depending on the position and is maintained between balls. The spacing of the is also maintained to prevent balls from colliding with each other.

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bearings For Parts Moving Linearly (AREA)

Abstract

La présente invention concerne un dispositif de guidage de déplacement linéaire comprenant : un rail de guidage comportant des rainures de roulement de rail formées des deux côtés du rail et s'étendant dans une direction longitudinale ; et un corps principal coulissant agencé mobile au niveau du rail de guidage dans une direction longitudinale, et comportant un corps de bloc et des bouchons d'extrémité positionnés au niveau des deux parties d'extrémité longitudinales du corps de bloc. Le corps de bloc comporte une rainure de roulement de bloc formée de manière à être évidée dans une direction longitudinale sur la surface orientée vers le rail de guidage, et comporte un trou traversant parallèle à la rainure de roulement de bloc et formé dans une direction longitudinale ; la rainure de roulement de bloc forme un chemin de roulement, le long duquel roule un corps de roulement, conjointement avec la rainure de roulement de rail, et un élément de guidage en résine synthétique et comportant un passage de retour formé à son intérieur est agencé dans le trou traversant ; des pièces à extrémité ronde en résine synthétique sont agencées au niveau des deux parties d'extrémité longitudinales du corps de bloc ; la pièce à extrémité ronde comporte une partie de guidage périphérique interne formée au niveau du côté faisant face au bouchon d'extrémité, le bouchon d'extrémité comporte une partie de guidage périphérique externe formée au niveau du côté faisant face à la pièce à extrémité ronde et formant un chemin de changement de direction conjointement avec la partie de guidage périphérique interne, et le chemin de changement de direction présente une forme incurvée et saillante vers l'extérieur dont les deux côtés sont en communication avec le chemin de roulement et le passage de retour ; et une partie inclinée de pièce d'extrémité est formée au niveau de la partie d'extrémité de la pièce à extrémité ronde se mettant en contact avec le corps de bloc, de sorte qu'une ligne d'extension de la rainure de roulement de bloc soit reliée à la partie inclinée de pièce d'extrémité.
PCT/KR2019/003190 2018-03-23 2019-03-19 Dispositif de guidage de déplacement linéaire WO2019182327A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR1020180033762A KR20190111521A (ko) 2018-03-23 2018-03-23 직선 운동 안내 장치
KR1020180033759A KR102061550B1 (ko) 2018-03-23 2018-03-23 직선 운동 안내 장치
KR10-2018-0033759 2018-03-23
KR10-2018-0033762 2018-03-23

Publications (1)

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WO2019182327A1 true WO2019182327A1 (fr) 2019-09-26

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WO (1) WO2019182327A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11101231A (ja) * 1997-09-19 1999-04-13 Shangyin Sci & Technol Co Ltd リニア運動転がり軸受における転がり体の循環経路構造
JP2002155936A (ja) * 2000-11-17 2002-05-31 Thk Co Ltd 案内装置
JP2008133837A (ja) * 2006-11-27 2008-06-12 Nsk Ltd 直動案内装置
JP2012229771A (ja) * 2011-04-27 2012-11-22 Nsk Ltd リニアガイド装置
KR20130133287A (ko) * 2011-04-22 2013-12-06 닛본 세이고 가부시끼가이샤 직동안내장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11101231A (ja) * 1997-09-19 1999-04-13 Shangyin Sci & Technol Co Ltd リニア運動転がり軸受における転がり体の循環経路構造
JP2002155936A (ja) * 2000-11-17 2002-05-31 Thk Co Ltd 案内装置
JP2008133837A (ja) * 2006-11-27 2008-06-12 Nsk Ltd 直動案内装置
KR20130133287A (ko) * 2011-04-22 2013-12-06 닛본 세이고 가부시끼가이샤 직동안내장치
JP2012229771A (ja) * 2011-04-27 2012-11-22 Nsk Ltd リニアガイド装置

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