WO2014042089A1 - 案内体及びこれを備えた運動案内装置 - Google Patents
案内体及びこれを備えた運動案内装置 Download PDFInfo
- Publication number
- WO2014042089A1 WO2014042089A1 PCT/JP2013/074063 JP2013074063W WO2014042089A1 WO 2014042089 A1 WO2014042089 A1 WO 2014042089A1 JP 2013074063 W JP2013074063 W JP 2013074063W WO 2014042089 A1 WO2014042089 A1 WO 2014042089A1
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- WO
- WIPO (PCT)
- Prior art keywords
- guide body
- rolling
- guide
- load
- track rail
- 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
- F16C29/0602—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
- F16C29/0611—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the return passages, i.e. the passages where the rolling elements do not carry load
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C21/00—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement
-
- 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
- F16C29/005—Guide rails or tracks for a linear bearing, i.e. adapted for movement of a carriage or bearing body there along
-
- 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
- F16C29/007—Hybrid linear bearings, i.e. including more than one bearing type, e.g. sliding contact bearings as well as rolling contact bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- 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
-
- 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
- F16C29/0616—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 essentially in a single direction
-
- 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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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B2210/00—General construction of drawers, guides and guide devices
- A47B2210/0002—Guide construction for drawers
- A47B2210/0029—Guide bearing means
- A47B2210/0032—Balls
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B2210/00—General construction of drawers, guides and guide devices
- A47B2210/0002—Guide construction for drawers
- A47B2210/0029—Guide bearing means
- A47B2210/0032—Balls
- A47B2210/0035—Balls cages therefor, e.g. for telescopic slides
-
- 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
- F16C2314/00—Personal or domestic articles, e.g. household appliances such as washing machines, dryers
- F16C2314/70—Furniture
- F16C2314/72—Drawers
Definitions
- the present invention relates to a guide body for moving a movable body such as a drawer relative to a structure such as furniture and a motion guide apparatus including the guide body.
- This motion guide device is composed of a track rail in which a rolling surface of the rolling element is formed, and a guide body that is movably assembled to the track rail via a large number of rolling elements.
- the guide body can move along the track rail by rolling while applying a load between the rolling surface of the track rail and the rolling surface of the guide body.
- Such a motion guide device is mainly used for a linear guide portion of a machine tool.
- a motion guide device for such an application is required to guide a target with high accuracy while requiring a high load capacity.
- the use of the motion guide apparatus having the above-mentioned configuration is expanding, and its market is promising for use in wood furniture furniture drawers, interiors such as aircraft or trains, and home appliances.
- high accuracy of movement of the guide body is not required, and three points of weight reduction, cost reduction, and smooth movement are mainly required as an evaluation index of the motion guide device.
- a material having a relatively low rigidity such as a resin material or aluminum is used as a production material for the track rail and the guide body.
- the rolling surface formed on the track rail may be wavy. For this reason, a gap is generated between the rolling surface formed on the track rail and the rolling element, between the rolling surface of the guide body and the rolling element, and the guide body is detached from the track rail. Challenges are envisaged.
- the rolling surface provided in the structure may be undulated, as in the case of using a low-rigidity material such as a resin material or aluminum as the material of the track rail, The subject that a guide body will remove
- the present invention is a guide body that includes a number of rolling elements that roll on a rolling surface formed in the structure and is relatively movable with respect to the structure, and the rolling elements circulate.
- the load opening for contacting the rolling elements in the endless circulation path with the rolling surface of the structure, and having at least one side of the load opening from the load opening A guide portion is formed that protrudes toward the structure from the protruding end of the rolling element that protrudes toward the structure.
- the motion guide device provided with the guide body of the present invention includes a track rail in which a rolling surface of the rolling element is formed, and a guide body that is movably assembled to the track rail via a number of rolling elements.
- the guide body has an infinite circulation path through which the rolling elements circulate, and has a load opening for bringing the rolling elements in the endless circulation path into contact with the rolling surface of the track rail, At least one side of the load opening is formed with a guide portion that protrudes toward the track rail from the protruding end of the rolling element that protrudes from the load opening toward the track rail.
- the ridge has a ridge extending along the longitudinal direction. The ridge is provided with a rolling surface of the rolling element, and a side surface of the ridge faces the guide of the guide.
- the rolling element that rolls on the rolling surface is rolling even detached from contact surface
- the guide portion provided on the guide body engages in the structure or the like, sliding further along the guide member guiding portion is in sliding contact with the structure or the like to a structure such as a guide Will do.
- FIG. 1 It is a schematic diagram which shows the guide body to which this invention is applied. It is a perspective view which shows an example of the exercise
- FIG. 1 is a schematic diagram showing the relationship between a guide body and a structure to which the present invention is applied.
- the guide body 2 is used by being movably assembled to the structure 1 such as furniture.
- a rolling surface 11 is formed on the structure 1, and the guide body 2 includes a plurality of balls 3 as rolling elements that roll on the rolling surface 11 and an infinite circulation path 4 of these balls 3. have.
- the ball 2 circulates in the endless circulation path 4 so that the guide body 2 can move relative to the structure 1.
- the guide body 2 of the present invention has a load opening 5 for bringing the ball 3 in the endless circulation path 4 into contact with the rolling surface 11 of the structure 1. That is, a part of the spherical surface of the ball 3 in the endless circulation path 4 is exposed from the load opening 5 to the outside of the guide body 2.
- a guide portion 6 is formed on at least one side of the load opening 5. The guide portion 6 protrudes toward the structure 1 with respect to the top S of the spherical surface of the ball 3 exposed from the load opening 5.
- the spherical surface of the ball 3 exposed from the load opening 5 is arranged at a position farther from the structure 1 than the tip of the guide 6. According to this structure, the site
- the rolling surface 11 is undulated by using a material having low rigidity as the structure 1, and the rolling surface 11 is moved when the guide body 2 moves relative to the structure 1.
- a gap is formed between the ball 3 exposed from the load opening 5 and the spherical surface of the ball 3.
- the ball 3 may be detached from the rolling surface 11 and the guide body 2 may be detached from the structure 1.
- the guide body 2 of the present invention the guide portion 6 is locked to the raised portion 12 formed in the structure 1, and further, the guide portion 6 is in sliding contact with the raised portion 12, and the guide body 6 is engaged. Therefore, the guide body 2 can be prevented from falling off the structure body 1.
- the rolling surface 11 is directly formed on the structure 1, but the track rail on which the rolling surface 11 is formed is fixed to the structure 1, and the guide body 2 is attached to the track rail. Can be assembled.
- the guide body 2 has a single endless circulation path 4. However, if the ball 3 can be endlessly circulated, a plurality of endless circulation paths 4 may be provided. Further, the size and molding material of the ball 3 that rolls in the endless circulation path 4 can be arbitrarily set.
- one guide portion 6 is formed for the guide body 2 to prevent the guide body 2 from falling off the structure 1 against gravity. From the viewpoint of simplifying the attaching operation of the guide body 2 to the guide opening 6, the guide portions 6 may be provided on both sides of the load opening 5.
- the molding material of the guide body 2 various metal materials, resin materials, and the like can be considered. Further, in the production of the guide body 2, forging and casting processes of various metal materials, resin materials in consideration of cost reduction. It is possible to arbitrarily use injection molding or the like.
- the guide portion 6 slides and guides the guide body 2 along the structure 1 while being in sliding contact with the raised portion 12, so that the guide body 2 is resistant to friction and resistance such as POM (polyoxymethylene). It is preferable to be molded from a material rich in wear characteristics.
- FIGS. 2 and 3 show a guide body and a motion guide apparatus provided with the same according to an embodiment of the present invention
- FIG. 2 is a perspective view
- FIG. 3 is a front sectional view
- the track rail 10 on which the rolling surface 120 of the ball 30 is formed is fixed to the structure 1A such as furniture.
- the motion guide apparatus includes a track rail 10 fixed to the structure 1A, and a guide body 20 assembled to the track rail 10 via a large number of balls 30.
- the guide body 20 is a track rail 10. It is possible to move along.
- the track rail 10 is formed linearly along the longitudinal direction of the structure 1A.
- the track rail 10 is provided with a raised portion 110 continuous along the longitudinal direction, and a rolling surface 120 on which the ball 30 rolls is formed on the tip surface of the raised portion 110.
- the track rail 10 is formed with fixing bolt mounting holes 130 at predetermined intervals along the longitudinal direction, and is used when the track rail 10 is fixed to the structure 1A.
- reference numeral 101 in FIG. 2 indicates that the guide body 20 can smoothly move between adjacent track rails 10 when a plurality of track rails 10 having the above-described configuration are arranged on the same line in the structure 1A. It refers to the auxiliary loose surface provided for the purpose. The configuration of the auxiliary loose surface 101 is not necessary when a plurality of track rails 10 are not arranged with respect to the structure 1A.
- the guide body 20 has one endless circulation path 40 of the ball 30, and the guide body 20 moves along the track rail 10 as the ball 30 circulates in the endless circulation path 40. Be able to.
- a movable body such as a table is fixed to the guide body 20, and the movable body can be moved relative to the structure 1A by the movement of the guide body 20 along the track rail 10. It has become.
- the guide body 20 is composed of a pair of halves 210 formed in the same shape, and the pair of halves 210 are coupled by a fixing bolt 220.
- each half 210 is formed with a ball rolling groove 230 as an endless rolling element rolling groove.
- the pair of halves 210 are combined so that the ball rolling grooves 230 face each other, and a large number of balls 30 are formed between the ball rolling grooves 230 of one half 210 and the other ball rolling grooves 230. It is arranged. That is, the endless circulation path 40 of the ball 30 is completed by connecting the pair of halves 210 so as to face each other.
- the ball rolling groove 230 formed in each half 210 includes a load rolling groove 230a formed linearly along the long side of the half 210, and a non-rolling groove 230a formed in parallel with the load rolling groove 230a. It is comprised from the load rolling groove 230b and a pair of direction change groove 230c which connects these load rolling groove 230a and no-load rolling groove 230b.
- a protrusion 240 is formed between the load rolling groove 230a and the no-load rolling groove 230b.
- the load rolling grooves 230a face each other and the load passage of the ball 30
- the no-load rolling grooves 230b face each other so that a no-load passage of the ball 30 is formed.
- the direction change grooves 230c face each other to form a direction change path for the ball 30. In this manner, the tunnel-shaped infinite circulation path 40 of the balls 30 is completed in the guide body 20, and a large number of balls 30 are arranged in the infinite circulation path 40.
- the load rolling groove 230a is formed along the long side of the half body 210, and is formed so as not to completely cover the spherical surface of the ball 30 by 180 ° (see FIG. 3). For this reason, in the state where the pair of halves 210 are coupled to each other, the load rolling groove 230a is opposed to form a load opening 260 opened toward the rolling surface 120 of the track rail 10, A part of the spherical surface of the ball 30 rolling in the load passage is exposed from the load opening 260 to the outside of the guide body 20. A part of the spherical surface of the ball 30 exposed to the outside of the guide body 20 comes into contact with the rolling surface 120 of the track rail 10.
- the load rolling grooves 230a face each other, whereby a load rolling surface 270 that faces the rolling surface 120 of the track rail 10 is formed.
- the load rolling surface 270 has a cross section perpendicular to the longitudinal direction of the guide body 20 formed in a Gothic arch shape.
- the Gothic arch-shaped load rolling surface 270 is formed by two arcuate curved surfaces intersecting at an angle of approximately 90 °, and the ball 30 contacts the negative load rolling surface 270 at two points. ing.
- the shape of the load rolling surface 270 is not necessarily a Gothic arch shape, and if the ball 30 is in contact with the load rolling surface 270 at two points, the longitudinal direction of the guide body 20 It does not matter if the cross section perpendicular to is V-shaped.
- the ball 30 applies a load between the rolling surface 120 of the track rail 10. While rolling.
- the no-load passage where the no-load rolling grooves 230b face each other has an inner diameter larger than the diameter of the ball 30, and the ball 30 does not apply a load, and the inside of the no-load passage Roll over. Also, the ball 30 rolls without applying a load on the direction change path where the direction change grooves 230c face each other.
- each half 210 is formed with a guide portion 280 adjacent to the load opening 260 formed by the load rolling groove 230a facing each other, and the pair of halves 210 are connected to each other.
- each guide portion 280 is arranged so as to sandwich the load opening 260.
- the guide portion 280 is formed along the load opening 260, that is, the guide portion 280 is formed along the longitudinal direction of the half body 210.
- FIG. 5 is an enlarged view showing the configuration of the guide unit 280 in detail.
- the guide portion 280 having the above configuration protrudes toward the rolling surface 120 of the track rail 10 from the top S ′ of the spherical surface of the ball 30 exposed from the load opening 260 to the outside of the guide body 20.
- a storage space T into which the raised portion 110 of the track rail 10 is inserted is formed between the top surface S ′ of the ball spherical surface.
- the guide portion 280 of each half body 210 faces the side surface 110 a of the raised portion 110.
- the guide member 280 is slidably brought into contact with the side surface 110 a as the guide body 20 is moved, and the guide body 20 is slid along the track rail 10. As a result, it is possible to prevent the guide body 20 from being detached from the track rail 10.
- the structure of the guide unit 280 can prevent the guide body 20 from being detached from the track rail 10, and the rolling surface 120 provided in the track rail 10 and the load rolling surface provided in the guide body 20.
- 270 may be wavy, and a material having low rigidity such as a resin material can be used as the material of the track rail 10 and the guide body 20. Accordingly, the weight of the entire motion guide device can be reduced.
- the track rail 10 and the guide body 20 can be produced by a relatively inexpensive molding method such as injection molding of a resin material. As a result, the production cost of the motion guide device can be reduced.
- the guide body 2 is preferably formed from a material rich in friction resistance and wear resistance such as POM (polyoxymethylene). Further, from the viewpoint of securing the strength of the guide body 2, it is preferable to manufacture each half body 210 constituting the guide body 2 by insert molding a resin material on a base material made of, for example, an aluminum alloy.
- the guide body 20 to which the present invention is applied and the motion guide device using the guide body 20 even if the rolling surface 120 of the track rail 10 on which the ball 30 rolls is wavy, the guide Since the structure of the portion 280 can prevent the guide body 20 from being detached from the track rail 10, it is not necessary to prepare the track rail 10 in which the straightness of the rolling surface 120 is secured, and the straightness is ensured. It is possible to process the rolling surface of the ball on the structure itself that is not formed, and to use the guide body 20 for this structure. That is, it is rich in versatility because it is not necessary to prepare a specially processed track rail, and it is possible to provide an inexpensive motion guide device provided with the guide body.
- the guide body 20 to which the present invention is applied has a simple configuration that is completed simply by connecting a pair of half bodies 210 facing each other, and the pair of half bodies 210 are formed in the same shape. Accordingly, the number of parts in producing the guide body 20 can be reduced. Further, when each half body 210 is produced by, for example, injection molding of a resin material, the half bodies 210 are molded from the same mold. It becomes possible to do. As a result, the production cost of the half body 210 can be reduced, and the guide body 20 itself can be produced at low cost.
- Such a guide body 20 to which the present invention is applied can arrange a plurality of track rails 10 on the same line with respect to the structure 1A and move along these track rails 10, for example.
- 6 and 7 show the configuration of the track rail 10 and the guide body 20 in such a use example.
- the auxiliary loose surface 101 is formed at the longitudinal end of the track rail 10 (see FIG. 2).
- the auxiliary gentle surface 101 is continuous with the rolling surface 120 and is inclined with respect to the rolling surface 120.
- the guide part 280 is formed in the guide body 20 to which the present invention is applied, and when the guide body 20 tries to move between the adjacent track rails 10, the guide part 280 becomes the track rail 10 ⁇ / b> A. And it will be in the state which is in sliding contact with the side surface 110a of the protruding part 110 formed in the track rail 10B. As a result, even if the ball 30 disposed between the guide body 20 and the track rail 10 is not in contact with the track rail 10, the guide body 20 moves from one track rail 10A to the other track rail 10B. It becomes possible.
- the load rolling groove 230a is formed linearly along the long side of the half body 210, but the configuration of the load rolling groove 230a is not limited thereto. Absent.
- FIG. 8 shows a modification of the load rolling groove 230a, and is a schematic view of the load rolling groove observed from a direction perpendicular to the moving direction of the guide body 20.
- FIG. The load rolling groove 230a-2 according to this modification is formed in a convex curved surface along the moving direction of the guide body 20.
- the radius of curvature R of the convex curved surface is a numerical value of the moving direction distance L of the guide rolling body 20 of the load rolling groove 230a-2, and the protrusion of the load rolling groove 230a-2 at the center of the guiding body 20 in the moving direction. It is calculated based on the numerical value of the distance M.
- the movement direction distance L of the guide body 20 is set to 15 mm, and the protrusion distance M at the center in the movement direction of the guide body 20 is set to 0.1 mm.
- the radius of curvature R is set to 281.3 mm.
- the convex curved surface is set so as to pass through a connecting point P with the direction changing groove 230c and a central portion Q in the moving direction of the guide body 20 of the load rolling groove 230a-2.
- the curved surface of the load rolling groove 230a-2 is exaggerated for easy understanding of the curvature of the load rolling groove 230a-2.
- the ball 30A located at the center in the longitudinal direction of the load rolling groove 230a-2 It contacts the rolling surface 120 and the load rolling groove 230a-2.
- the balls 30B other than the ball 30A are placed at a distance from the rolling surface 120 of the track rail 10 and the load rolling groove 230a-2.
- the distances between the balls 30B and the rolling surfaces 120 and the load rolling grooves 230a-2 increase as the balls 30B move away from the balls 30A in the moving direction of the guide body 20. That is, there is room for the balls 30B to move between the rolling surface 120 and the load rolling groove 230a-2.
- the load rolling groove When the load rolling groove is formed in a straight line shape, if the rolling surface 120 of the track rail 10 is wavy, the posture of the guide body 2 changes following the shape of the rolling surface 120. However, when the load rolling groove 230a-2 is a convex curved surface, the ball 30B has room to move between the rolling surface 120 and the load rolling groove 230a-2. The posture of the guide body 20 is easily stabilized.
- FIG. 9 shows a modified example of the guide unit 280. Comparing FIG. 9 and FIG. 3, it can be understood that the guide portion 280 according to this modified example protrudes toward the track rail 10 as compared with the guide portion 280 shown in FIG. 3. Accordingly, the raised portion 110 of the track rail 10 protrudes toward the guide body 20.
- the guide body 20 can be slidably guided along the track rail 10, so that the guide body 20 can be more reliably prevented from detaching from the track rail 10.
- each half body 210 has the guide portion 280 and is formed in the same shape.
- the guide body 20 is separated from the track rail 10 by the configuration of the guide portion 280. If it is possible to prevent this, the guide portion 280 may be provided only in one half 210 as shown in FIG.
- each half body 210 is configured to include the guide portion 280, and it is superior in terms of production simplification that each half body 210 is formed in the same shape.
- FIG. 11 shows a modification of the guide body to which the present invention is applied.
- components having the same shape as the guide body 20 are denoted by the same reference numerals as those of the guide body 20.
- a single raised portion 1100 is formed on a structure 11A such as furniture, and two raised rolling surfaces 120 are formed on the raised portion 1100.
- the guide body 20-2 according to this modification is assembled so as to be movable with respect to the structure 11A.
- the guide body 20-2 includes a pair of plate bodies 20-2a in which endless ball rolling grooves 230 are formed, and an intermediate body 20 in which two ball rolling grooves 230 are formed in directions opposite to each other. -2b.
- the pair of plate bodies 20-2a is fixed to the intermediate body 20-2b with the intermediate body 20-2b interposed therebetween, thereby forming a two-end infinite circulation path 40.
- the guide body 20-2 is formed with a load opening 260 for bringing a part of the spherical surface of the ball 30 in the endless circulation path 40 into contact with the rolling surface 120 of the structure 11A.
- the guide body 20-2 is provided with two load openings 260.
- the guide portions 280 are formed on each plate body 20-2a. When the pair of plate bodies 20-2a and the intermediate body 20-2b are coupled, the guide portions 280 of each plate body 20-2a have two strips. It arrange
- the track rail 100 is composed of a horizontal portion 100a and a pair of rolling portions 100b erected so as to be orthogonal to the horizontal portion 100a, and is formed in a cross-sectional channel shape.
- a rolling surface 120 of the ball 30 is formed on the inner surface of each rolling portion 100b.
- the guide body 20-3 is inserted between the pair of rolling parts 100b, and is composed of a pair of half bodies 20-3a having the same shape.
- Each half 20-3a is formed with two endless ball rolling grooves 230.
- a pair of half halves 20-3a are coupled to face each other so that two endless circulations are provided to the guide 20-3.
- a path 40 is formed.
- the guide body 20-3 has two load openings 260 for bringing the ball 30 in the endless circulation path 40 into contact with the rolling surface 120 of the track rail 100.
- the load openings 260 are opened in directions opposite to each other.
- each half body 20-3a is provided with the guide portion 280.
- the guide portion 280 of each half body 20-3a sandwiches the load opening 260. Arranged in such a way. Also in the guide body 20-3 according to this modification, the structure of the guide portion 280 can prevent the guide body 20-3 from being detached from the track rail 100.
- the endless ball rolling grooves 230 face each other by connecting the pair of half bodies 210 facing each other so that the endless circulation path of the ball 30 is completed. (See FIG. 2).
- the structure of the guide body to which the present invention is applied is not limited to this, and the structure shown in FIG. That is, the guide body 20-4 shown in FIG. 13 is a guide body in which a load passage 41 in which the ball 30 rolls while applying a load and a no-load passage 42 in which the ball 30 rolls in an unloaded state are formed.
- a main body 20-4a and a pair of lid bodies 20-4b fixed to the guide body main body 20-4a are configured.
- Each lid 20-4b is formed with a direction changing path for changing the rolling direction of the ball 30, and the ball 30 that has finished rolling in the load passage 41 is placed in each lid 20-4b. By entering, the rolling direction of the ball 30 is changed. That is, the endless circulation path of the ball 30 is completed by fixing the pair of lids 20-4b to the guide body 20-4a.
- the guide body 20 is composed of a pair of halves 210, and the pair of halves 210 are coupled by fixing bolts 220. You may couple
- the guide body 20-5 of this embodiment includes a pair of holding members 7 as the fixing mechanism.
- Each holding member 7 includes a pair of side portions 71 and a central portion 72 that connects the pair of side portions 71 and is formed in a U-shaped cross section.
- Each side portion 71 is formed with a locking projection 73 for attaching the holding member 7 to each half body 210.
- each half 210 is formed with a pair of first fixing surfaces 81 on both end surfaces in the moving direction of the half 210, and a second fixing surface 82 is formed so as to be orthogonal to each first fixing surface 81. A pair is formed.
- Each second fixing surface 82 is formed with a locking groove 83 so that the locking projection 71 of the holding member 7 is inserted.
- a positioning projection 91 and a positioning hole 92 are formed in the protrusion 240 of each half body 210.
- the positioning projections 91 of one half body 210 are fitted into the positioning holes 92 formed in the other half body 210.
- the pair of halves 210 are positioned (see FIG. 16).
- FIG. 14 one holding member 7 is detached from the fixing groove 8 in order to facilitate understanding of the fitting relationship between the fixing groove 8 and the holding member 7.
- Reference numeral 84 in FIGS. 14 to 16 denotes a fixing hole used when fixing the movable body to the guide body 20-5.
- the guide body 20-5 it is possible to fix the pair of halves 210 only by fitting the holding member 7 into the fixing groove 8. It is possible to reduce the number of assembly man-hours. Moreover, since the guide body to which the present invention is applied is configured by combining the pair of halves, there is a concern that the guide body may be deformed when an unintended external force is applied to the guide body, for example. In particular, when an external force is applied to the guide body from the moving direction, there is a concern that the joint of the pair of halves expands and the ball falls off from the endless circulation path.
- the pair of half members 210 are sandwiched by the pair of holding members 7 at both ends in the moving direction of the guide body 20-5. It is possible to prevent the guide body 20-5 from being deformed when an external force is applied.
- FIGS. 14 to 16 show a modification of the guide body to which the present invention is applied.
- the guide body 20-6 of this embodiment is different from the guide body 20-5 only in the configuration of the fixing mechanism, and this fixing mechanism is provided directly on each half body 210.
- the same components as those in the embodiment shown in FIGS. 14 to 16 are denoted by the same reference numerals, and the description thereof is omitted.
- Each half 210 of this embodiment is provided with a locking projection 171 and a locking hole 172.
- the locking projections 171 and the locking holes 172 are formed on the same plane as the surface on which the ball rolling groove 230 is formed.
- a locking claw 173 is formed at the tip of the locking projection 171, while a step 174 is formed inside the locking hole 172 (see FIG. 18).
- the locking projections 171A of the half 210A are inserted into the locking holes 172B of the half 210B, and the engagement of the half 210A.
- the locking projection 171B of the half body 210B is inserted into the stop hole 172A.
- the locking claw 173 of the locking projection 171 is locked to the stepped portion 174 in the locking hole 172, thereby fixing the pair of halves 210.
- the guide body 20-6 of the present embodiment is configured such that the pair of half bodies 210 are fixed to each other by a so-called snap-fit method, like the guide body 20-5.
- this guide body 20-6 since the guide body 20-6 is completed simply by assembling the pair of halves 210, there is no need to perform fastening work of fixing bolts, etc., and man-hours for assembling the guide body are reduced. It becomes possible to reduce. Further, since the fixing mechanism is directly provided on each half body 210, for example, when the pair of half bodies 210 is produced by injection molding of a resin material, the fixing mechanism can be provided together with the molding. Therefore, the production cost of the guide body itself can be reduced compared to the guide body 20-5. Further, since the halves 210 have the same shape, the halves 210 can be molded from the same mold when they are produced by resin injection molding. As a result, the production cost of the half body 210 can be reduced, and the guide body 20-6 itself can be produced at low cost.
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Abstract
Description
Claims (7)
- 構造体(1,1A)に形成された転走面(11,120)上を転走する多数の転動体(3,30)を具備して前記構造体(1,1A)に対して相対的に移動可能な案内体(2,20)であって、
前記案内体(2,20)は、前記転動体(3,30)が循環する無限循環路(4,40)を有すると共に、当該無限循環路(4,40)内の転動体(3,30)を前記構造体(1,1A)の転走面(3,30)に接触させるための負荷開口部(5,260)を有し、
前記負荷開口部(5,260)の少なくとも片側には、当該負荷開口部(5,260)から前記構造体(1,1A)側に突出した転動体(3,30)の突出端よりも前記構造体(1,1A)側に突出した案内部(6,280)が形成されることを特徴とする案内体(2,20)。 - 前記案内部(6,280)は前記案内体(2,20)に設けられた負荷開口部(5,260)を挟んで一対設けられ、
一対の案内部(6,280)の先端を結んだ仮想平面と前記負荷開口部(5,260)から前記構造体(1,1A)側に突出した転動体(3,30)の突出端の間には前記構造体(1,1A)が入り込む収納空間が形成されることを特徴とする請求項1記載の案内体(2,20)。 - 前記案内体(20)は同一の形状の一対の半体(210)が結合してなり、
各半体(210)には無端状の転動体転走溝(230)が形成され、一対の半体(210)を互いに向かい合わせに結合することにより、前記転動体(30)の無限循環路(40)及び前記負荷開口部(260)が形成されることを特徴とする請求項2記載の案内体(20)。 - 前記案内体(20)の無限循環路(40)は、前記構造体(1A)の転走面(120)との間で転動体(30)が荷重を負荷しながら転走する負荷転走面(270)を有し、
前記負荷転走面(270)は前記負荷開口部(260)の長手方向に沿った凸曲面に形成されていることを特徴とする請求項1記載の案内体(20)。 - 一対の半体(210)が各半体(210)の移動方向両端部で互いに固定されることを特徴とする請求項3記載の案内体(20)。
- 一対の半体(210)がスナップフィット方式で互いに固定されることを特徴とする請求項5記載の案内体。
- 転動体(30)の転走面(120)が形成された軌道レール(10)と、
この軌道レール(10)に多数の転動体(30)を介して移動自在に組み付けられる案内体(20)と、を有し、
前記案内体(20)は、前記転動体(30)が循環する無限循環路(40)を有すると共に、当該無限循環路(40)内の転動体(30)を前記軌道レール(10)の転走面(120)に接触させるための負荷開口部(260)を有し、
前記負荷開口部(260)の少なくとも片側には、当該負荷開口部(260)から前記軌道レール(10)側に突出した転動体(30)の突出端よりも前記軌道レール(10)側に突出した案内部(280)が形成され、
前記軌道レール(10)は、当該軌道レール(10)の長手方向に沿って延びる***部(110)を有し、
前記***部(110)には前記転動体(30)の転走面(120)が設けられると共に、当該***部(110)の側面は前記案内体(20)の案内部(280)と対向することを特徴とする運動案内装置。
Priority Applications (5)
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EP13837075.4A EP2863078B1 (en) | 2012-09-13 | 2013-09-06 | Guiding body and motion-guiding device provided with same |
CN201380029296.3A CN104350295B (zh) | 2012-09-13 | 2013-09-06 | 引导体以及具备其的运动引导装置 |
BR112015003117-0A BR112015003117B1 (pt) | 2012-09-13 | 2013-09-06 | Corpo-guia e dispositivo guiador de movimento dotado do mesmo |
CA2880468A CA2880468C (en) | 2012-09-13 | 2013-09-06 | Guiding body and motion-guiding device provided with same |
US14/406,434 US10030700B2 (en) | 2012-09-13 | 2013-09-06 | Guiding body and motion-guiding device provided with same |
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DE102016201042A1 (de) * | 2016-01-26 | 2017-07-27 | Festo Ag & Co. Kg | Linearführungseinrichtung |
CN105570297A (zh) * | 2016-02-01 | 2016-05-11 | 嘉兴海菱达精密传动科技有限公司 | 一种滑块 |
DE102019108146A1 (de) * | 2019-03-29 | 2020-10-01 | Bayerische Motoren Werke Aktiengesellschaft | Anordnung eines Befestigungsclips an einer auf einem Kraftfahrzeugbauteil aufgeschweißten Verbindungseinrichtung sowie Verfahren zum Herstellen einer Anordnung eines Befestigungsclips an einer auf einem Fahrzeugbauteil aufgeschweißten Verbindungseinrichtung |
USD931095S1 (en) * | 2019-11-24 | 2021-09-21 | Pmc Industries, Inc. | Slot nut |
DE202021101951U1 (de) * | 2021-04-12 | 2022-07-18 | Igus Gmbh | Statisch optimiertes Hybrid-Rollenlager |
CN114291523A (zh) * | 2022-01-25 | 2022-04-08 | 赵天宝 | 一种适用重型物体直线平移的载重*** |
CN115681328A (zh) * | 2022-09-09 | 2023-02-03 | 东莞市远景自动化科技有限责任公司 | 滚动承载单元及其制作方法 |
CN116292616A (zh) * | 2022-11-23 | 2023-06-23 | 柯拉思利工业科技(上海)有限公司 | 一种轻量化长寿命高承载循环滚子轴承 |
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CN104350295A (zh) | 2015-02-11 |
EP2863078B1 (en) | 2020-03-11 |
CA2880468A1 (en) | 2014-03-20 |
US20150176643A1 (en) | 2015-06-25 |
EP2863078A4 (en) | 2015-11-18 |
US10030700B2 (en) | 2018-07-24 |
BR112015003117B1 (pt) | 2021-11-23 |
EP2863078A1 (en) | 2015-04-22 |
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CN104350295B (zh) | 2017-12-08 |
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