WO2013002064A1 - リニアアクチュエータ - Google Patents
リニアアクチュエータ Download PDFInfo
- Publication number
- WO2013002064A1 WO2013002064A1 PCT/JP2012/065588 JP2012065588W WO2013002064A1 WO 2013002064 A1 WO2013002064 A1 WO 2013002064A1 JP 2012065588 W JP2012065588 W JP 2012065588W WO 2013002064 A1 WO2013002064 A1 WO 2013002064A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- linear actuator
- ball
- guide block
- cover
- holding
- Prior art date
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Classifications
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1471—Guiding means other than in the end cap
-
- 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
- F16C29/0602—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
- F16C29/0604—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the load bearing section
- F16C29/0607—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the load bearing section of parts or members for retaining the rolling elements, i.e. members to prevent the rolling elements from falling out of the bearing body or carriage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
-
- 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
- F16C29/0602—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
-
- 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
- F16C29/0602—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
- F16C29/0609—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the ends of the bearing body or carriage where the rolling elements change direction, e.g. end caps
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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
- F16C29/0614—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a shoe type bearing body, e.g. a body facing one side of the guide rail or track only
- F16C29/0621—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a shoe type bearing body, e.g. a body facing one side of the guide rail or track only for supporting load in essentially two directions, e.g. by multiple points of contact or two rows of rolling elements
- F16C29/0623—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a shoe type bearing body, e.g. a body facing one side of the guide rail or track only for supporting load in essentially two directions, e.g. by multiple points of contact or two rows of rolling elements with balls
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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
- 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
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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
- F16C29/0678—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body, i.e. the body carrying the circulating rolling elements, provided in the interior of a sleeve-like guide member defining the opposing raceways, e.g. in a telescopic shaft
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6681—Details of distribution or circulation inside the bearing, e.g. grooves on the cage or passages in the rolling elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1404—Characterised by the construction of the motor unit of the straight-cylinder type in clusters, e.g. multiple cylinders in one block
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/24—Other details, e.g. assembly with regulating devices for restricting the stroke
-
- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
Definitions
- the present invention relates to a linear actuator that reciprocates a slide table along the axial direction of a cylinder body.
- a linear actuator such as a fluid pressure cylinder is used as a means for conveying a workpiece or the like under the action of supplying a pressure fluid.
- a linear actuator such as a fluid pressure cylinder
- the applicant of the present invention can linearly reciprocate the slide table along the cylinder body to convey the workpiece placed on the slide table.
- linear actuators such as those described above have been required to be simplified in configuration and reduced in manufacturing cost.
- a general object of the present invention is to provide a linear actuator that can be simplified in configuration and can be manufactured at low cost.
- the present invention relates to a linear actuator that reciprocates a slide table along the axial direction of the cylinder body.
- a guide block attached to the cylinder body and formed with a circulation groove through which a plurality of rolling elements circulate, and a cover member provided at an end of the guide block, the slide table being arranged in the axial direction of the cylinder body
- a holding means that is mounted on the guide block, holds the rolling element in the circulation groove so as to be freely circulated, and holds the cover member with respect to the guide block;
- the circulation groove is formed to open in the longitudinal direction in the guide block, and the holding means is detachably provided to the guide block.
- the guide mechanism constituting the linear actuator includes a circulation groove opened along the longitudinal direction of the guide block, and a plurality of rolling elements circulating in the circulation groove are held by the holding means.
- the holding means holds a plurality of rolling elements in a circulating manner with respect to the circulation groove of the guide block and holds a cover member provided at an end of the guide block.
- the cover member can be easily assembled by using the holding means and the structure can be simplified as compared with the case where the cover member is assembled to the guide block with a bolt or the like.
- FIG. 1 is an external perspective view of a linear actuator according to a first embodiment of the present invention.
- FIG. 2 is an exploded perspective view of the linear actuator shown in FIG.
- FIG. 3 is an exploded perspective view of the linear actuator of FIG. 2 viewed from another direction.
- 4 is an overall longitudinal sectional view of the linear actuator of FIG.
- FIG. 5 is a sectional view taken along line VV in FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 7 is a cross-sectional view taken along line VII-VII in FIG.
- FIG. 8 is an external perspective view of a guide mechanism constituting the linear actuator of FIG.
- FIG. 9 is an external perspective view of the guide mechanism of FIG. 8 viewed from another direction.
- FIG. 1 is an external perspective view of a linear actuator according to a first embodiment of the present invention.
- FIG. 2 is an exploded perspective view of the linear actuator shown in FIG.
- FIG. 3 is an exploded perspective view of the linear actuator of FIG. 2 viewed
- FIG. 10 is an exploded perspective view of the guide mechanism shown in FIG.
- FIG. 11 is an external perspective view of a linear actuator according to the second embodiment of the present invention.
- 12 is a cross-sectional view taken along line XII-XII in FIG.
- FIG. 13 is an exploded perspective view of a linear actuator according to the third embodiment of the present invention.
- FIG. 14 is an external perspective view of a guide mechanism constituting the linear actuator of FIG.
- FIG. 15 is an external perspective view of the guide mechanism of FIG. 14 viewed from another direction.
- FIG. 16 is an exploded perspective view of the guide mechanism shown in FIG.
- FIG. 17 is an external perspective view of a ball clip used in the guide mechanism of FIG. 18 is a cross-sectional view taken along line XVIII-XVIII in FIG.
- FIG. 19 is a longitudinal sectional view showing a direction orthogonal to the longitudinal direction of the linear actuator of FIG.
- FIG. 20 is an external perspective view showing a ball clip according to a
- the linear actuator 10 is provided on a cylinder body 12 and an upper portion of the cylinder body 12, and reciprocates linearly along the longitudinal direction (arrows A and B directions).
- a slide table 14 a guide mechanism 16 interposed between the cylinder body 12 and the slide table 14 to guide the slide table 14 along the longitudinal direction (arrows A and B directions), and the slide table 14 And a stopper mechanism 18 capable of adjusting the amount of displacement.
- the cylinder body 12 is rectangular in cross section and is formed with a predetermined length along the longitudinal direction (arrows A and B directions).
- a concave portion 20 is formed in a substantially arcuate shape in a substantially arcuate cross section. (See FIG. 2).
- the recess 20 extends along the longitudinal direction (the directions of arrows A and B), and a set of bolt holes 24 through which the connecting bolts 22 that connect the cylinder body 12 and the guide mechanism 16 are inserted. Yes.
- first and second ports 26 and 28 through which pressure fluid is supplied and discharged are formed so as to be orthogonal to the longitudinal direction of the cylinder body 12 (arrows A and B directions). These are communicated with a pair of through holes 30a and 30b which will be described later.
- sensor mounting grooves 32a and 32b are formed on both side surfaces of the cylinder body 12 along the longitudinal direction (arrows A and B directions), and sensors not shown are mounted.
- a pair of bolt holes 24 are formed in the lower surface of the cylinder body 12 at the center in the width direction on the axis, and the connecting bolts 22 are inserted from below.
- the connecting bolts 22 are connected to each other by protruding from the upper surface of the cylinder body 12 and screwed to the guide block 76 of the guide mechanism 16.
- a pair of through-holes 30a and 30b penetrating along the longitudinal direction (arrow A and B directions) are formed inside the cylinder body 12, and one through-hole 30a and the other through-hole 30b are predetermined. They are arranged in parallel and spaced apart from each other.
- the through holes 30a and 30b are respectively provided with a cylinder mechanism 42 including a piston 38 having a seal ring 34 and a magnet 36 mounted on the outer peripheral surface thereof and a piston rod 40 connected to the piston 38.
- the cylinder mechanism 42 includes a pair of pistons 38 and a piston rod 40 that are respectively provided in a pair of through holes 30a and 30b.
- one end of the through holes 30a and 30b is closed by a cap 44, and the other end of the through holes 30a and 30b is airtight by a rod holder 46 held via a retaining ring. Blocked.
- one through hole 30a communicates with the first and second ports 26 and 28, respectively, and the other through hole 30b passes through a set of connection passages 48 formed between the one through hole 30a. Communicate with each other. That is, the pressure fluid supplied to the first and second ports 26 and 28 is introduced into one through hole 30 a and then introduced into the other through hole 30 b through the connection passage 48.
- the connection passage 48 is formed so as to be orthogonal to the extending direction of the through holes 30a and 30b (directions of arrows A and B).
- the slide table 14 includes a table main body 50 and an end plate 52 connected to the other end of the table main body 50, and the end plate 52 is connected to the table main body 50 so as to be orthogonal to the table main body 50.
- the table main body 50 includes a base portion 54 extending at a predetermined thickness along the longitudinal direction (arrows A and B directions), and a pair of guides extending downward so as to be orthogonal to both side portions of the base portion 54. It consists of walls 56a and 56b.
- a first ball guide groove 60 for guiding a ball (rolling element) 58 of the guide mechanism 16 to be described later is formed on the inner surfaces of the guide walls 56a and 56b.
- the first ball guide groove 60 is formed to be recessed in a substantially semicircular cross section.
- a holder portion 64 of the stopper mechanism 18 described later is fixed to one end portion of the table body 50 by a pair of bolts 62a.
- the end plate 52 is fixed to the other end of the table body 50 by another pair of bolts 62b.
- workpiece holding holes 66 are formed in the base portion 54 so as to be spaced apart from each other by a predetermined distance.
- the workpiece holding holes 66 are formed on the slide table 14. Used to fix (not shown).
- the end plate 52 is fixed to the other end of the table main body 50 and is provided so as to face the end surface of the cylinder main body 12, and the end of the piston rod 40 inserted through the pair of rod holes 68 is fixed. . Thereby, the slide table 14 including the end plate 52 is displaced along the longitudinal direction (arrow A and B direction) of the cylinder body 12 together with the piston rod 40.
- a damper 70 is mounted at a substantially central portion of the end plate 52 through a damper mounting hole.
- the damper 70 is made of, for example, an elastic material such as rubber, and its end portion protrudes from the end surface of the end plate 52.
- the damper 70 abuts against the end surface of the cylinder body 12 together with the displacement action of the slide table 14.
- the stopper mechanism 18 includes a holder portion 64 provided on the lower surface of one end portion of the table body 50, a stopper bolt 72 that is screwed to the holder portion 64, and a lock nut 74 that restricts the forward and backward movement of the stopper bolt 72. And is provided so as to face the end surface of the guide mechanism 16 provided in the cylinder body 12.
- the holder part 64 is formed in a block shape, and is fixed to the base part 54 of the table body 50 constituting the slide table 14 with two bolts 62a. The center portion of the holder portion 64 is screwed to the stopper bolt 72 through a screw hole.
- the stopper bolt 72 is made of, for example, a shaft-shaped stud bolt with a screw engraved on the outer peripheral surface, and is screwed into the screw hole of the holder portion 64, and a lock nut 74 is protruded from the end surface of the holder portion 64. Screwed together.
- the stopper bolt 72 is screwed around the holder portion 64, the stopper bolt 72 is displaced along the axial direction (arrows A and B directions) so as to approach and separate from the guide mechanism 16, and a lock nut.
- the forward / backward movement of the stopper bolt 72 is regulated by screwing 74.
- the guide mechanism 16 includes a wide and flat guide block 76, a pair of cover blocks (cover members) 78a and 78b provided at both ends of the guide block 76, and the guide A plurality of balls 58 that circulate along the longitudinal direction of the block 76, and a pair of ball clips (holding members) 82 a and 82 b that hold the balls 58 in the ball circulation groove 80 of the guide block 76.
- the guide mechanism 16 includes a pair of cover clips (another holding members) 84a and 84b for holding the cover blocks 78a and 78b with respect to the guide block 76, and two pairs attached to the cover blocks 78a and 78b. Cover plates 86a and 86b.
- the guide block 76 is made of, for example, a metal material such as stainless steel or carbon steel, and second ball guide grooves 88 are formed along the longitudinal direction (arrows A and B directions) on both side surfaces thereof, and the bottom surface thereof.
- a pair of ball circulation grooves 80 into which the balls 58 are loaded is formed along the longitudinal direction (the directions of arrows A and B). That is, the second ball guide groove 88 and the ball circulation groove 80 are formed substantially in parallel.
- the second ball guide groove 88 is formed in a semicircular cross section like the first ball guide groove 60.
- the second ball guide groove 88 is formed at a position facing the first ball guide groove 60, and the ball circulation groove 80 is formed on the upper surface of the cylinder body 12. It is formed to face.
- a projecting portion 90 extending in the longitudinal direction at the center thereof and bulging upward is formed.
- the projecting portion 90 is formed in a trapezoidal shape that is slightly narrower upward.
- the cover blocks 78a and 78b are made of, for example, a resin material such as nylon, and include a main body 92 and a notch 94 cut out at a substantially center in the width direction of the main body 92.
- the main body 92 is formed by being divided into two in the width direction with the notch 94 as the center, and one end surface that contacts the guide block 76 is formed in a flat shape, and the other end surface opposite to the one end surface is formed. It is formed in a stepped shape.
- an arc portion 96 that bulges in a cross-section arc shape downward is formed at the approximate center in the width direction of the main body portion 92, and the arc mechanism 96 is connected to the upper portion of the cylinder body 12 with the guide mechanism 16. At that time, it is inserted into the recess 20.
- a pair of return guides 98 for reversing the circulation direction of the ball 58 are provided on one end surface of the main body 92 through the mounting holes 100, respectively.
- the return guide 98 is formed in a semicircular cross section and includes a groove-shaped guide portion 102 on which the ball 58 rolls on the outer peripheral surface.
- the ball circulation groove 80 and the second ball guide groove 88 are continuously connected by the return guide 98, and the ball 58 is first and second from the ball circulation groove 80 via the guide portion 102 in the return guide 98.
- the ball guide grooves 60 and 88 are continuously rotated by changing the direction by 180 °.
- a pair of holding holes 104a and 104b are formed on the other side surface of the main body 92 with the notch 94 as a center and spaced apart from each other at an equal interval, and on the outer side in the width direction with respect to the holding holes 104a and 104b.
- the positioning pins 106a and 106b projecting in the longitudinal direction are formed.
- the holding holes 104a and 104b are formed with a predetermined depth toward one end surface of the main body 92.
- the other end surface of the main body 92 is formed such that a portion having the positioning pins 106a and 106b protrudes in a direction away from the one end surface with respect to a portion where the holding holes 104a and 104b are formed.
- the other end surface of the main body portion 92 is formed in a stepped shape that protrudes by a predetermined height in the direction in which the outer side in the width direction is separated from the one end surface with respect to the vicinity of the center portion adjacent to the notch portion 94.
- a clip groove 108 into which a part of the ball clips 82a and 82b is inserted is formed in the main body 92 at the side of the holding holes 104a and 104b.
- the clip groove 108 is formed in a substantially L-shaped cross section so as to continue from the other end surface of the main body portion 92 to the lower surface, and one end portion thereof communicates with the ball circulation groove 80, and the other end portion includes the main body portion 92.
- a clip hole (not shown) recessed toward the one end surface is formed.
- the clip groove 108 is formed with a width dimension corresponding to the thickness of ball clips 82a and 82b described later.
- the ball clips 82a and 82b are made of, for example, a wire made of a metal material such as stainless steel, and the first straight portion 112 formed on a straight line and a pair formed at both ends of the first straight portion 112.
- First bent portions 114a and 114b are formed so as to be substantially orthogonal to the first straight portion 112. Note that one first bent portion 114a and the other first bent portion 114b are bent in the same direction with respect to the first linear portion 112 and are formed to be substantially parallel to each other.
- first bent portions 114a and 114b are respectively formed with engaging portions 116 that are bent at substantially right angles from the end portions and extend in directions approaching each other.
- the engaging portion 116 is formed substantially in parallel with the first straight portion 112 and is formed with a predetermined length with respect to the first bent portions 114a and 114b.
- the ball clips 82a and 82b have a distance between the first bent portion 114a and the other first bent portion 114b in the longitudinal direction (arrow A, B direction) so that the pair of cover blocks 78a,
- the length 78b and the guide block 76 are formed so as to be approximately equal to or slightly smaller than the length along the longitudinal direction (arrows A and B directions).
- the ball clips 82 a and 82 b are mounted so that the first straight portion 112 is on the lower surface side of the guide block 76 and inserted into the ball circulation groove 80. Specifically, the first straight portion 112 is disposed in the ball circulation groove 80 at the center side of the guide block 76 and at a position close to the lower surface of the guide block 76 (see FIG. 7).
- the first linear portion 112 is held in contact with the outer peripheral surface of the ball 58 in the ball circulation groove 80, and the ball 58 is dropped in a direction away from the ball circulation groove 80. It is held in the ball circulation groove 80 in a prevented state.
- the first straight portion 112 guides the plurality of balls 58 in the ball circulation groove 80 so as to be circulated along the longitudinal direction (arrow A, B direction) of the guide block 76.
- the ball clips 82a and 82b have a pair of cover blocks 78a and 78b provided on both end surfaces of the guide block 76, respectively, and both end portions of the first straight portion 112 and the first bent portions 114a and 114b are While being inserted into the clip grooves 108 of the cover blocks 78a and 78b, the engaging portions 116 are respectively inserted into the clip holes.
- the ball clips 82a and 82b are held with respect to the guide block 76 and the cover blocks 78a and 78b, and at the same time, the pair of cover blocks 78a and 78b sandwich the guide block 76 with the ball clips 82a and 82b. Since they are biased in the direction of being pulled together, they are held in contact with the guide block 76.
- the ball clips 82 a and 82 b have both a function of holding the plurality of balls 58 with respect to the guide block 76 and a function of holding the pair of cover blocks 78 a and 78 b at both ends of the guide block 76. Yes.
- the cover clips 84a and 84b are made of, for example, a wire made of a metal material such as stainless steel, and a pair of second straight portions 118 formed on a straight line and both ends of the second straight portions 118 are formed.
- the cover clips 84a and 84b are formed of, for example, a thicker wire than the ball clips 82a and 82b.
- the second bent portions 120a and 120b are formed so as to be substantially orthogonal to the second linear portion 118, and in the vicinity of the end portion, the extending direction of the second linear portion 118 (arrows A and B). A bulging portion 122 bulging in the direction). Note that one second bent portion 120a and the other second bent portion 120b are bent in the same direction with respect to the second straight portion 118 and are formed to be substantially parallel to each other.
- the bulging portion 122 is formed, for example, in an arc shape in cross section, and bulges in a direction in which the bulging portion 122 in one second bent portion 120a and the bulged portion 122 in the other second bent portion 120b approach each other. I'm out.
- cover clips 84a and 84b have a pair of cover blocks 78a, 78a, a separation distance along the longitudinal direction (arrow A, B direction) between the one second bent portion 120a and the other second bent portion 120b.
- 78b and the guide block 76 are formed so as to be substantially the same as or slightly smaller than the length along the longitudinal direction.
- the cover plates 86a and 86b are formed, for example, by press-molding a plate made of a metal material, and a pair of the cover plates 86a and 86b are attached to the other side surfaces of the main body 92 in the one and the other cover blocks 78a and 78b.
- the cover plates 86a and 86b are formed in a stepped shape corresponding to the other side surfaces of the cover blocks 78a and 78b, an insertion portion 124 formed at one end thereof and inserted into the holding holes 104a and 104b, and the insertion portion 124.
- a pin hole 126 formed at the other end of the cover plates 86a and 86b on the outer side in the width direction is provided.
- the insertion portion 124 is formed in a hemispherical shape on one side surface in the thickness direction of the cover plates 86a and 86b, and the inside on the other side surface is recessed in a concave shape.
- the cover plates 86a and 86b are attached to the cover blocks 78a and 78b, the cover plates 86a and 86b are brought into contact with the other end surfaces of the cover blocks 78a and 78b, and the positioning pins 106a and 106b are inserted into the pin holes 126. And the insertion portion 124 is inserted into the holding holes 104a and 104b.
- the pair of cover plates 86 a and 86 b are mounted in a state of being positioned with respect to the other end surface of the guide block 76.
- the guide block 76 is mounted from above the guide block 76 with a pair of cover blocks 78a and 78b being mounted on both end faces.
- the second straight portions 118 of the cover clips 84 a and 84 b are disposed so as to contact the upper surface of the guide block 76 and to contact the protrusion 90, and the bulging portion 122 is disposed on the other side of the insertion portion 124. It is inserted and engaged with each of the recesses on the side.
- the cover plates 86a and 86b abut against the cover blocks 78a and 78b, and the cover plates 86a and 86b, the cover blocks 78a and 78b,
- the guide block 76 is held by the pair of cover clips 84a and 84b so as not to be relatively displaced in the longitudinal direction (the directions of arrows A and B).
- the cover clips 84a and 84b hold the cover plates 86a and 86b, the cover blocks 78a and 78b, and the guide block 76 in a state where they are connected in the longitudinal direction of the guide block 76 (arrows A and B directions). .
- the cover clips 84 a and 84 b are arranged so that the second straight portion 118 is exposed above the guide block 76, while the ball clips 82 a and 82 b have the first straight portion 112 having the guide block 76. It arrange
- the linear actuator 10 according to the first embodiment of the present invention is basically configured as described above. Next, assembly of the guide mechanism 16 constituting the linear actuator 10 will be described.
- cover blocks 78a and 78b are respectively attached to both end faces of the guide block 76. Make contact.
- the ball 58 loaded in the second ball guide groove 88 is held so as not to fall off from the guide block 76 by a jig or the like (not shown).
- the first bent portions 114a, 114b is inserted into the clip groove 108, and the engaging portion 116 is inserted into the clip hole. Accordingly, the plurality of balls 58 are held by the first straight portions 112 of the ball clips 82a and 82b in the ball circulation groove 80, and the balls 58 are not dropped from the ball circulation groove 80 opened.
- the pair of cover blocks 78a and 78b has the engaging portions 116 of the pair of ball clips 82a and 82b engaged with the clip holes and the first bent portions 114a and 114b inserted into the clip grooves 108.
- each is pressed toward the guide block 76 side. Therefore, the cover blocks 78a and 78b are held against both end faces of the guide block 76 by the ball clips 82a and 82b.
- one cover block 78a and the other cover block 78b are pulled in a direction in which they approach each other by the ball clips 82a and 82b.
- cover plates 86a and 86b are attached to the pair of cover blocks 78a and 78b, respectively.
- the pair of cover clips 84a and 84b are brought close to the guide block 76 and the cover blocks 78a and 78b from the side opposite to the ball clips 82a and 82b, and the second linear portion 118 is brought into contact with the vicinity of the projection 90.
- the bulging portion 122 is inserted into the insertion portion 124 of the cover plates 86a and 86b.
- the cover plates 86a and 86b are held by the both ends of the pair of cover clips 84a and 84b in a state of being attached to the cover blocks 78a and 78b, respectively, and inserted into the clip groove 108 and the clip hole by the cover plates 86a and 86b. Both ends of the ball clips 82a and 82b thus formed are covered and held. Further, the cover plates 86a and 86b, the cover blocks 78a and 78b, and the guide block 76 are fixed integrally.
- the cover plates 86a and 86b are in contact with the cover blocks 78a and 78b, and the cover blocks 78a and 78b are in contact with the end face of the guide block 76, so that the cover plates 86a and 86b, the cover blocks 78a and 78b, and
- the guide block 76 is connected and integrally held by the pair of cover clips 84a and 84b so as not to be relatively displaced in the longitudinal direction (arrows A and B directions).
- the guide mechanism 16 constituting the linear actuator 10
- a plurality of balls 58 are held circulated with respect to the guide block 76 by using the pair of ball clips 82 a and 82 b.
- the pair of cover blocks 78a and 78b brought into contact with both ends of the guide block 76 can be easily fixed by the pair of cover clips 84a and 84b.
- the guide mechanism 16 including the guide block 76, the cover blocks 78a, 78b, and the like can be easily assembled and simplified in configuration as compared with a case where the guide mechanisms 16 are assembled to each other using, for example, bolts. it can. Therefore, the number of manufacturing steps can be reduced in the linear actuator 10 including the guide mechanism 16.
- the guide block 76 is formed with a ball circulation groove 80 that opens downward, and the ball 58 is circulated through the ball circulation groove 80. For this reason, it is possible to reduce the number of processing steps and the processing cost as compared with the case of forming the through hole. As a result, the manufacturing cost of the linear actuator 10 can be reduced.
- the ball clips 82a and 82b have elasticity, the ball clips 82a and 82b are deformed so as to follow the outer peripheral surfaces of the plurality of balls 58 while being attached to the guide block 76 and the cover blocks 78a and 78b. It is possible to hold the ball 58 in a circulatory state.
- the ball clips 82a and 82b are securely and simply positioned by being mounted in the clip grooves 108 formed in the cover blocks 78a and 78b, the ball clips 82a and 82b are always attached to the plurality of balls 58. Thus, the ball 58 can be stably held.
- cover clips 84a and 84b are prevented from dropping off from the cover plates 86a and 86b when the bulging portions 122 are inserted and engaged with the insertion portions 124 of the cover plates 86a and 86b. .
- the cover plates 86a and 86b, the cover blocks 78a and 78b, and the guide block 76 can be reliably and stably connected by the cover clips 84a and 84b.
- the pair of cover blocks 78a and 78b are held with respect to the guide block 76 by the pair of ball clips 82a and 82b, and at the same time, the pair of cover clips 84a and 84b formed of a thicker wire than the ball clips 82a and 82b. Since the cover blocks 78a and 78b are held, the cover blocks 78a and 78b can be securely and firmly fixed to both end faces of the guide block 76.
- the ball circulation groove 80 into which the ball 58 is loaded is provided so as to open to the lower surface facing the cylinder body 12, the ball 58 is held by the ball clips 82a and 82b.
- the ball clips 82 a and 82 b are held by contacting the upper surface of the cylinder body 12. Therefore, it is possible to reliably hold the ball 58 together with the upper surface of the cylinder body 12 without setting the strength of the ball clips 82a and 82b large.
- a pressure fluid is introduced into the first port 26 from a pressure fluid supply source (not shown).
- the second port 28 is opened to the atmosphere under the operation of a switching valve (not shown).
- the pressure fluid supplied to the first port 26 is supplied to one through hole 30a and is supplied to the other through hole 30b through the connection passage 48, and the piston 38 is moved to the rod holder 46 side (in the direction of arrow A). Press toward. Thereby, the slide table 14 is displaced in a direction away from the cylinder body 12 together with the piston rod 40 connected to the piston 38.
- the ball 58 constituting the guide mechanism 16 rolls along the ball circulation path along with the displacement of the slide table 14, whereby the slide table 14 is guided along the axial direction by the guide mechanism 16.
- the stopper mechanism 18 loosens the lock nut 74 and allows the stopper bolt 72 to move forward and backward, and then adjusts the amount of protrusion from the end surface of the holder portion 64 by screwing the stopper bolt 72 to thereby slide the stopper table 72.
- the amount of displacement of 14 can be adjusted.
- the ball clips 82a and 82b for holding the plurality of balls 58 and the pair of cover blocks 78a and 78b, and the cover blocks 78a and 78b and the cover plates 86a and 86b are held.
- the cover clips 84a and 84b are provided respectively.
- the present invention is not limited to this configuration.
- the ball clips 82a and 282b are used only without the cover plates 86a and 86b and the cover clips 84a and 84b.
- the cover blocks 78a and 78b may be held together with the ball 58. In this case, the number of parts of the guide mechanism 16 and the number of assembly steps can be reduced.
- FIGS. a linear actuator 150 according to a second embodiment is shown in FIGS.
- the same components as those of the linear actuator 10 according to the first embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted.
- lubricating oil such as grease is applied to the balls 58 of the ball circulation groove 80 in the cylinder body 12 and the guide mechanism 16.
- a lubricating oil supply unit 152 that can be supplied is provided.
- the lubricating oil supply unit 152 is formed, for example, on the upper surface of the cylinder body 12, and extends in a direction orthogonal to the longitudinal direction (arrows A and B directions) of the cylinder body 12, and the first supply groove 154
- the feed groove 154 communicates with the second feed groove 156 formed on the lower surface of the guide block 76 constituting the guide mechanism 16.
- first supply grooves 154 are provided, arranged at a predetermined interval along the longitudinal direction (arrow A, B direction) of the cylinder body 12, and the recesses of the cylinder body 12. 20 are formed on both sides of the center.
- the first supply groove 154 is formed to be depressed by a predetermined depth with respect to the upper surface of the cylinder body 12 and extends from both side surfaces of the cylinder body 12 to a position facing the ball circulation groove 80 of the guide block 76. .
- a plurality of second supply grooves 156 are provided in the same manner as the first supply groove 154, and extend perpendicular to the longitudinal direction (arrow A, B direction) of the guide block 76, and the guide mechanism 16 is assembled to the cylinder body 12.
- the first supply groove 154 is formed in a straight line.
- the second supply groove 156 extends from both side surfaces of the guide block 76 to the pair of ball circulation grooves 80 and is formed so that the end thereof faces the ball 58 loaded in the ball circulation groove 80.
- the lubricating oil is supplied from the end of the first supply groove 154 with a lubricating oil supply means (for example, a grease injection tool) (not shown), whereby the lubricating oil is guided along the first supply groove 154. And a part of the lubricating oil is guided from the first supply groove 154 to the second supply groove 156. Thereby, the lubricating oil is supplied into the ball circulation groove 80 and lubricates the plurality of balls 58.
- a lubricating oil supply means for example, a grease injection tool
- the plurality of balls 58 can be easily and reliably lubricated, and the balls 58 can be smoothly circulated to smoothly slide the slide table 14. Further, the durability of the ball 58 can be improved.
- the linear actuator 150 can be simply performed via the lubricating oil supply unit 152 without being disassembled, so that the maintenance performance of the linear actuator 150 can be improved.
- the ball circulation groove 80 into which the ball 58 is loaded is open on the lower surface side facing the cylinder body 12, so that the first supply groove 154 is provided on the upper surface side of the cylinder body 12.
- the ball circulation groove 80 it becomes possible to easily supply the lubricating oil to the ball circulation groove 80.
- the guide mechanism 16 having the above-described configuration has a cylinder mechanism 42 that is displaced by the pressure fluid supplied to the cylinder body 12, like the linear actuators 10 and 150 according to the first and second embodiments.
- the present invention is not limited to the case where it is used for a fluid pressure cylinder that drives the slide table 14 via the cylinder mechanism 42 and the guide mechanism 16.
- the above-described guide mechanism 16 may be provided and applied to an electric actuator that displaces the slide table 14 along the cylinder body 12 by a drive source such as a motor.
- FIGS. a linear actuator 200 according to a third embodiment is shown in FIGS.
- the same components as those of the linear actuator 10 according to the first embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted.
- the linear actuator 200 includes a pair of straight portions 204a and 204b and ball clips 202a and 202b that can hold the ball 58, and uses a guide mechanism 206 that eliminates the cover plates 86a and 86b. This is different from the linear actuator 10 according to the first embodiment.
- the guide mechanism 206 includes a wide and flat guide block 76, a pair of cover blocks 208a and 208b provided at both ends of the guide block 76, and the guide block 76.
- a plurality of balls 58 that circulate along the longitudinal direction, a pair of ball clips 202 a and 202 b that hold the balls 58 in the ball circulation groove 80 of the guide block 76, and the cover blocks 208 a and 208 b to the guide block 76.
- a pair of cover clips 84a and 84b to be held.
- the ball clips 202a and 202b are made of a wire material made of a metal material such as stainless steel, for example, and are formed on a straight line and a pair of straight portions 204a formed substantially in parallel. 204b, a connecting portion 210 for connecting one end portions of the straight portions 204a and 204b, and bent portions 212a and 212b formed at the other end portions of the straight portions 204a and 204b.
- the straight portions 204a and 204b are provided, for example, at substantially the same interval as the width dimension of the ball circulation groove 80, and the length along the longitudinal direction (arrow A and B direction) is a pair of cover blocks 208a. , 208b and the guide block 76 are formed so as to be approximately equal to or slightly smaller than the length along the longitudinal direction (direction of arrows A and B).
- the connecting portion 210 is formed in a substantially U-shaped cross section so as to connect one end portion of one straight portion 204a and one end portion of the other straight portion 204b, and is orthogonal to the longitudinal direction of the straight portions 204a and 204b. Formed as follows.
- the bent portions 212a and 212b are formed by being bent so that the end portion is on one end portion side (arrow A direction) with respect to the other end portions of the linear portions 204a and 204b.
- One bent portion 212a and the other bent portion 212b are formed so as to be substantially parallel to each other.
- the ball clips 202a and 202b are formed, for example, by bending a single wire by press molding or the like.
- the cover blocks 208a and 208b are respectively provided at one end and the other end of the guide block 76, and the main clip has a first clip groove at a position aligned with the ball circulation groove 80 of the guide block 76. 214 is formed, and a pair of second clip grooves 216 with which the cover clips 84 a and 84 b are engaged are formed at a position on the arc portion side with respect to the first clip groove 214.
- the first clip groove 214 is formed so as to be recessed toward the guide block 76 side with respect to the end surfaces of the cover blocks 208a and 208b, and inclined so that the upper part thereof faces the guide block 76 side. That is, as shown in FIG. 18, the first clip groove 214 is formed so as to be inclined at a predetermined angle from the lower end portion toward the upper end portion toward the guide block 76 side.
- the first clip groove 214 is spaced upward at a predetermined interval and extends upward, and a convex portion 218 with which the connection portion 210 of the ball clips 202a and 202b is engaged is provided therebetween.
- the convex portion 218 has an upper end formed in a semicircular shape, and protrudes toward the end face of the cover blocks 208 a and 208 b at a predetermined height with respect to the first clip groove 214.
- the second clip groove 216 is formed so that the upper part thereof is inclined in a direction away from the first clip groove 214, and the second bent portions 120a and 120b of the cover clips 84a and 84b are inserted and engaged respectively.
- the guide block 76 When mounting the ball clips 202a and 202b and the cover clips 84a and 84b in the guide mechanism 206, first, the guide block 76 is placed so that the ball circulation groove 80 faces upward, and the ball circulation groove 80 is placed in the ball circulation groove 80. With the plurality of balls 58 loaded, the straight portions 204a and 204b of the ball clips 202a and 202b are placed on the opening 220 of the ball circulation groove 80 so as to contact the outer peripheral surface of the balls 58 (see FIG. 19). ).
- cover blocks 208a and 208b are disposed at both ends of the guide block 76, and the second bent portions 120a and 120b of the cover clips 84a and 84b are engaged with the second clip grooves 216, respectively.
- the cover blocks 208a and 208b are held at both ends of the guide block 76.
- the connecting portions 210 of the ball clips 202a and 202b are engaged with the convex portions 218 of one cover block 208a, and the bent portions 212a and 212b are engaged.
- the ball clips 202a and 202b are held by the pair of cover blocks 208a and 208b via the connecting portion 210 and the bent portions 212a and 212b, and the plurality of balls 58 are placed in the ball circulation groove 80 by the straight portions 204a and 204b.
- the pair of ball clips 202a and 202b and the cover clips 84a and 84b are assembled to the guide mechanism 206.
- the cover plates 86a and 86b used in the linear actuator 10 according to the first embodiment described above are not necessary, the number of parts is reduced. It is possible to reduce the size and weight, and to reduce the number of assembling steps, the productivity can be improved and the manufacturing cost can be reduced.
- the ball 58 loaded in the ball circulation groove 80 of the guide block 76 can be held movably along the traveling direction of the ball 58 by the pair of linear portions 204a and 204b, the ball 58 can be reliably held. , Can be reliably prevented from falling off the ball circulation groove 80. Further, by holding the ball 58 with a pair of straight portions 204a and 204b, for example, compared with the case where the ball 58 is held with respect to the ball circulation groove 80 by one straight portion, the ball 58 slides. Since the resistance can be reduced, the ball 58 can be rolled more smoothly along the ball circulation groove 80 when the slide table 14 is moved.
- the ball 58 in the ball circulation groove 80 can be securely held by the ball clips 202a and 202b, the opening 220 of the ball circulation groove 80 can be formed large.
- the ball circulation groove 80 is provided. The productivity in the case of forming the guide block 76 by drawing or forging can be improved.
- the above-described ball clips 202a and 202b are not limited to the case where the ball clips 202a and 202b are formed as shown in FIG. 17, and like the ball clip 230 according to the modification shown in FIG. 20, for example, You may make it form by press-molding the board
- the ball clip 230 has a predetermined width and extends in the longitudinal direction, and is formed at both ends of the ball holding portion 232 that holds the ball 58 and the ball holding portion 232 and is bent at a substantially right angle. Folded portions 234a and 234b are provided.
- the ball holding portion 232 is formed in, for example, a flat plate shape, and a filling groove 236 filled with lubricating oil such as grease is formed in the central portion thereof.
- a plurality of filling grooves 236 are provided so as to be separated from each other along the longitudinal direction of the ball holding portion 232, and are formed to be recessed with a predetermined depth with respect to the surface of the ball holding portion 232.
- the bent portions 234a and 234b are formed in a frame shape in which an upper end portion is formed in a semicircular cross section and an engagement hole 238 is formed in the center. Note that the bent portions 234 a and 234 b are formed with substantially the same width as the ball holding portion 232.
- the surface of the ball holding portion 232 that is, the filling, with the ball 58 loaded in the ball circulation groove 80 of the guide block 76.
- the bent portions 234a and 234b are inserted into the first clip grooves 21216 of the cover blocks 208a and 208b, respectively, and the engagement holes 238 are formed in the convex portions 218. Engage with each other.
- the ball clip 230 is held by the pair of cover blocks 208a and 208b via the pair of bent portions 234a and 234b, and the plurality of balls 58 are held in the ball circulation groove 80 by the ball holding portion 232.
- the filling groove 236 filled with the lubricating oil is disposed at a position facing the plurality of balls 58, when the ball 58 rolls along the ball circulation groove 80, the lubricating oil is suitably lubricated. Is made.
- the manufacturing cost can be reduced and the productivity can be improved.
- the ball holding portion 232 into a flat plate shape, it is possible to form the filling groove 236 that can be filled with the lubricating oil, and the ball 58 can have a lubricating function.
- linear actuator according to the present invention is not limited to the above-described embodiment, and various configurations can be adopted without departing from the gist of the present invention.
Abstract
Description
前記シリンダ本体に取り付けられ、複数の転動体が循環する循環溝の形成されたガイドブロックと、前記ガイドブロックの端部に設けられるカバー部材とを有し、前記スライドテーブルを前記シリンダ本体の軸線方向に沿って案内するガイド機構と、
前記ガイドブロックに装着され、前記循環溝内に前記転動体を循環自在に保持すると共に、前記カバー部材を前記ガイドブロックに対して保持する保持手段と、
を備え、
前記循環溝は、前記ガイドブロックにおいて長手方向に沿って開口して形成されると共に、前記保持手段は、前記ガイドブロックに対して着脱自在に設けられることを特徴とする。
Claims (12)
- シリンダ本体(12)の軸線方向に沿ってスライドテーブル(14)を往復動作させるリニアアクチュエータ(10、150、200)において、
前記シリンダ本体(12)に取り付けられ、複数の転動体(58)が循環する循環溝(80、88)の形成されたガイドブロック(76)と、前記ガイドブロック(76)の端部に設けられるカバー部材(78a、78b、208a、208b)とを有し、前記スライドテーブル(14)を前記シリンダ本体(12)の軸線方向に沿って案内するガイド機構(16、206)と、
前記ガイドブロック(76)に装着され、前記循環溝(80)内に前記転動体(58)を循環自在に保持すると共に、前記カバー部材(78a、78b、208a、208b)を前記ガイドブロック(76)に対して保持する保持手段と、
を備え、
前記循環溝(80)は、前記ガイドブロック(76)において長手方向に沿って開口して形成されると共に、前記保持手段は、前記ガイドブロック(76)に対して着脱自在に設けられることを特徴とするリニアアクチュエータ。 - 請求項1記載のリニアアクチュエータにおいて、
前記保持手段は、前記転動体(58)を保持する保持部材(82a、82b、202a、202b、230)を備え、前記保持部材(82a、82b、202a、202b、230)は、前記循環溝(80)に沿って延在し前記転動体(58)を保持する転動体保持部(112、204a、204b、232)と、前記転動体保持部(112、204a、204b、232)に対して折曲して前記カバー部材(78a、78b、208a、208b)を保持するカバー保持部(114a、114b、210、212a、212b、234a、234b)とを有することを特徴とするリニアアクチュエータ。 - 請求項2記載のリニアアクチュエータにおいて、
前記循環溝(80)は、前記シリンダ本体(12)側に向かって開口していることを特徴とするリニアアクチュエータ。 - 請求項2記載のリニアアクチュエータにおいて、
前記保持手段は、前記保持部材(82a、82b、202a、202b、230)と共に前記カバー部材(78a、78b、208a、208b)を前記ガイドブロック(76)の端部に保持する別の保持部材(84a、84b)を備えることを特徴とするリニアアクチュエータ。 - 請求項4記載のリニアアクチュエータにおいて、
前記別の保持部材(84a、84b)は、前記ガイドブロック(76)に沿って延在する直線部(118)と、
前記直線部(118)に対して折曲し、前記カバー部材(78a、78b、208a、208b)を保持する一組のカバー保持部(120a、120b)とを有することを特徴とするリニアアクチュエータ。 - 請求項1記載のリニアアクチュエータにおいて、
前記シリンダ本体(12)には、前記循環溝(80)に潤滑油を供給する潤滑油供給部(152)が設けられることを特徴とするリニアアクチュエータ。 - 請求項6記載のリニアアクチュエータにおいて、
前記潤滑油供給部(152)は、前記シリンダ本体(12)の外部に露呈し、前記循環溝(80)に臨む部位まで延在する供給溝(154、156)であることを特徴とするリニアアクチュエータ。 - 請求項2記載のリニアアクチュエータにおいて、
前記転動体保持部(204a、204b)は、互いに離間して平行に一対設けられ、前記循環溝(80)の開口部(220)に設けられ、前記循環溝(80)の延在方向に沿って配置されることを特徴とするリニアアクチュエータ。 - 請求項2記載のリニアアクチュエータにおいて、
前記保持部材(82a、82b、202a、202b)は、線材を折曲させることで形成されることを特徴とするリニアアクチュエータ。 - 請求項2記載のリニアアクチュエータにおいて、
前記保持部材(230)は、板材をプレス成形することで形成されることを特徴とするリニアアクチュエータ。 - 請求項8記載のリニアアクチュエータにおいて、
前記保持部材(230)は、前記転動体保持部(232)が平面状に形成され、該前記転動体保持部(232)には、潤滑油の充填される充填部(236)が形成されることを特徴とするリニアアクチュエータ。 - 請求項11記載のリニアアクチュエータにおいて、
前記充填部(236)は、前記転動体保持部(232)において前記転動体(58)に臨む位置に設けられることを特徴とするリニアアクチュエータ。
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CN201280032255.5A CN103649561B (zh) | 2011-06-30 | 2012-06-19 | 线性致动器 |
BR112013033506-8A BR112013033506B1 (pt) | 2011-06-30 | 2012-06-19 | atuador linear |
RU2013156455/06A RU2580979C9 (ru) | 2011-06-30 | 2012-06-19 | Линейный исполнительный механизм |
US14/125,485 US8998491B2 (en) | 2011-06-30 | 2012-06-19 | Linear actuator |
JP2013522767A JP6011883B2 (ja) | 2011-06-30 | 2012-06-19 | リニアアクチュエータ |
KR1020137034949A KR101893082B1 (ko) | 2011-06-30 | 2012-06-19 | 리니어 액추에이터 |
DE112012002693.4T DE112012002693T5 (de) | 2011-06-30 | 2012-06-19 | Linearstellglied |
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Cited By (5)
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WO2015114827A1 (ja) * | 2014-02-03 | 2015-08-06 | Smc株式会社 | リニアアクチュエータ |
JP2015200403A (ja) * | 2014-04-01 | 2015-11-12 | Smc株式会社 | 流体圧シリンダ |
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JP1588198S (ja) * | 2017-01-26 | 2017-10-16 | ||
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TWI668378B (zh) * | 2018-04-23 | 2019-08-11 | 直得科技股份有限公司 | 微型線性滑軌及其滑座 |
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- 2012-06-19 RU RU2013156455/06A patent/RU2580979C9/ru active
- 2012-06-19 DE DE112012002693.4T patent/DE112012002693T5/de not_active Withdrawn
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CN113803369A (zh) * | 2020-06-12 | 2021-12-17 | 东佑达自动化科技股份有限公司 | 线性致动器 |
JP2021196050A (ja) * | 2020-06-12 | 2021-12-27 | 東佑達自動化科技股▲ふん▼有限公司 | リニアアクチュエータ |
JP7143392B2 (ja) | 2020-06-12 | 2022-09-28 | 東佑達自動化科技股▲ふん▼有限公司 | リニアアクチュエータ |
Also Published As
Publication number | Publication date |
---|---|
KR101893082B1 (ko) | 2018-08-29 |
WO2013002064A9 (ja) | 2013-05-10 |
TWI540275B (zh) | 2016-07-01 |
JP6011883B2 (ja) | 2016-10-25 |
TW201314078A (zh) | 2013-04-01 |
RU2580979C9 (ru) | 2016-12-20 |
RU2580979C2 (ru) | 2016-04-10 |
US8998491B2 (en) | 2015-04-07 |
BR112013033506A2 (pt) | 2017-01-24 |
CN103649561A (zh) | 2014-03-19 |
JPWO2013002064A1 (ja) | 2015-02-23 |
CN103649561B (zh) | 2016-03-30 |
BR112013033506B1 (pt) | 2021-01-12 |
KR20140048896A (ko) | 2014-04-24 |
US20140133787A1 (en) | 2014-05-15 |
RU2013156455A (ru) | 2015-07-10 |
DE112012002693T5 (de) | 2014-03-20 |
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