WO2007055208A1 - 運動案内装置、相対可動システム及び変位吸収機構 - Google Patents
運動案内装置、相対可動システム及び変位吸収機構 Download PDFInfo
- Publication number
- WO2007055208A1 WO2007055208A1 PCT/JP2006/322194 JP2006322194W WO2007055208A1 WO 2007055208 A1 WO2007055208 A1 WO 2007055208A1 JP 2006322194 W JP2006322194 W JP 2006322194W WO 2007055208 A1 WO2007055208 A1 WO 2007055208A1
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- WIPO (PCT)
- Prior art keywords
- moving block
- base
- track rail
- displacement absorbing
- moving
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/002—Elastic or yielding linear bearings or bearing supports
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/40—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers consisting of a stack of similar elements separated by non-elastic intermediate layers
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/42—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing
- F16F1/52—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing loaded in combined stresses
- F16F1/54—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing loaded in combined stresses loaded in compression and shear
-
- 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
- F16C29/004—Fixing of a carriage or rail, e.g. rigid mounting to a support structure or a movable part
-
- 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
- F16C29/008—Systems with a plurality of bearings, e.g. four carriages supporting a slide on two parallel rails
-
- 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
- F16C29/0633—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides
- F16C29/0635—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end
- F16C29/0638—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls
- F16C29/0642—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls with four rows of balls
- F16C29/0647—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls with four rows of balls with load directions in X-arrangement
Definitions
- Motion guide device relative movable system, and displacement absorbing mechanism
- the present invention relates to a motion guide device for considering that a moving body relatively linearly or curvedly moves with respect to a base, a relative movable system incorporating the motion guide device, and a motion guide device.
- the present invention relates to a displacement absorbing mechanism provided in the above.
- a motion guide device is a machine element for guiding a moving body to perform a linear motion or a curved motion relative to a base, such as a machine tool, a semiconductor 'liquid crystal manufacturing device, an automobile, a mouth bot, etc. Installed in various machines.
- FIG. 16 shows an example in which this type of motion guide device is used uniaxially.
- the motion guide device is constructed by assembling a moving block 2 so as to be capable of linear motion or curved motion on an elongated track rail 1.
- Track rail 1 is attached to base 3 and moving block 2 is attached to moving body 4 such as a table.
- moving body 4 such as a table.
- a large number of rolling elements are interposed between the track rail 1 and the moving block 2 so as to be capable of rolling, and the moving block 2 slides along the track rail 1 in a sliding manner.
- the moving body 4 may be slightly displaced relative to the base 3 in the vertical direction or the horizontal direction in FIG.
- the moving body 4 may be slightly displaced relative to the base 3 in the vertical direction or the horizontal direction in FIG.
- the coefficient of thermal expansion of a structure such as the base 3 and the moving body 4 is different in a machine used in an environment where temperature changes are severe, the moving body 4 may be displaced with respect to the base 3. is there.
- the curvature of the track rail 1 changes due to the action of a force metal having different thermal expansion coefficients.
- the applicant has proposed a movable body mounting plate that can absorb the displacement of the movable body 4 relative to the base 3 in the vertical direction or the horizontal direction (see Patent Document 1).
- a radial plate 5 and a horizontal plate 6 are stacked on the upper surface of the moving block as movable body mounting plates.
- the thin wall portions 5a and 6a of the movable body mounting plates 5 and 6 are elastically deformed to absorb the displacement of the movable body 4 in the upward / downward direction or the lateral direction with respect to the base 3.
- Patent Document 1 Japanese Patent Laid-Open No. 7-190053
- the motion guide device may be requested to increase the rigidity in the left-right direction while lowering the rigidity in the vertical direction.
- the movable body 4 it may be desired that the movable body 4 be easily displaced in the vertical direction with respect to the base 3 while being displaced in the horizontal direction.
- the moving body 4 since the moving body 4 is generally coupled to the upper surface side of the moving block 2, the rigidity on the upper surface side of the moving block 2 is increased, so that it is difficult to meet this requirement.
- an object of the present invention is to provide a motion guide device, a relatively movable system, and a displacement absorbing mechanism that have low rigidity in the up-down direction and high rigidity in the left-right direction.
- the invention according to claim 1 is directed to a motion guide for guiding the moving body (11) to perform a linear motion or a curved motion relative to the base (12).
- a track rail (15) having a bottom surface (30a), a side surface (30b), and a top surface (30c) and attached to one of the base (12) or the moving body (11), and the track rail A center portion (16a) facing the upper surface (30c) of (15) and a side wall portion (16b) facing the side surface (30b) of the track rail (15), and the track rail (15)
- a moving block (16) assembled so as to be relatively linear or curved, and a displacement absorbing mechanism (17, 38) provided on a side surface (23) of the moving block (16).
- the displacement absorbing mechanism (17, 38) is coupled to the attachment body (26, 34) attached to the other of the base (12) or the movable body (11) and the attachment body (26, 34), A displacement absorbing portion (31, 37) that shears when the mounting body (26, 34) is displaced in a direction intersecting the upper surface of the moving block (16). is there.
- the invention according to claim 2 is the motion guide device according to claim 1, wherein at least a part of the upper surface of the movable block (16) is attached to the attachment body (26, 34). Further, the other force of the base (12) or the movable body (11) is characterized in that a space is provided so as to be easily displaced by the urging force on the upper surface of the movable block (16).
- the invention according to claim 3 is the motion guide apparatus according to claim 1 or 2, wherein the displacement absorbing portion (31, 37) includes a metal plate (28, 36) and a rubber layer (27, 35). ) Is laminated.
- the invention described in claim 4 is the motion guide apparatus according to any one of claims 1 to 3, wherein the displacement absorbing portion (37) is provided on a side surface (23) of the moving block (16). It has a rubber layer (35) to be vulcanized and bonded.
- the invention according to claim 5 is the motion guide apparatus according to any one of claims 1 to 4, wherein the attachment body (34) faces the side surface (23) of the moving block (16).
- Mounting body side wall (34a) and mounting body upper wall (34b) facing the upper surface (24) of the moving block (16), and the mounting body upper wall of the mounting body (34) (34b) is provided with a mounting hole (39) for mounting the mounting body (34) to the other of the base (12) or the moving body (11). It is characterized by.
- the invention according to claim 6 is the motion guide apparatus according to claim 5, wherein the displacement absorbing portion (37) includes a side surface (23) of the moving block (16) and a side wall portion of the attachment body.
- the invention according to claim 7 is the motion guide device according to claim 5 or 6, wherein the attachment body (34) corresponds to a pair of left and right side wall portions (16b) of the moving block (16). It is characterized by being divided into two.
- the invention according to claim 8 is a motion guide device for guiding the moving body (11) relative to the base (12) to perform a linear motion or a curved motion relative to the base (12).
- a displacement absorbing mechanism (17,) provided between the side surface (23) of the moving block (16) and the other of the base (12) or the moving body (11). 38), and at least part of the upper surface of the moving block (16), the base (12) attached to the displacement absorbing mechanism (17, 38) or the moving A space is provided so that the other of the body (11) is easily displaced toward the upper surface (24) of the moving block (16).
- the invention according to claim 9 is a relative movable system in which the movable body (11) is relatively linearly or curvedly moved with respect to the base (12), and the relative movable system includes a wall ( 11a), a base (12) having a wall surface (12a) facing the wall surface (1 la) of the mobile body (11), and the wall surface (1) of the mobile body (11) (1). la) and the wall surface (12a) of the base (12), and a movement for guiding the moving body (11) to perform a linear motion or a curved motion relative to the base (12).
- a guide device (13), and a drive source for linearly moving or curving the movable body (11) relative to the base (12), and the motion guide device (13) has a bottom surface (13).
- the invention according to claim 10 is opposed to the upper surface (30c) of the track rail (15) on the track rail (15) having the bottom surface (30a), the side surface (30b), and the upper surface (30c).
- a moving block (16) having a central portion (16a) and a side wall portion (16b) facing the side surface (30b) of the track rail (15) is disposed relative to the track rail (15).
- the mounting body (26, 34) is coupled to the mounting body (26, 34), and shear deformation occurs when the mounting body (26, 34) is displaced in a direction intersecting the upper surface of the moving block (16).
- a displacement absorbing mechanism (31, 37) that is provided on a side surface (23) of the moving block (16).
- the displacement absorbing mechanism provided on the side surface of the moving block undergoes shear deformation. Absorbs displacement. Therefore, a motion guide device having low rigidity in the vertical direction can be obtained.
- the displacement absorbing portion that undergoes shear deformation is provided on the side surface of the moving block, the cross-sectional area of the displacement absorbing portion can be increased, and a highly rigid motion guide device can be obtained in the left-right direction.
- the vertical rigidity of the motion guide device can be further reduced.
- the vertical rigidity of the displacement absorbing mechanism can be reduced and the horizontal rigidity can be increased.
- the rubber layer is integrally vulcanized and adhered to the side surface of the moving block. This eliminates the need to attach a metal base plate to the side of the moving block. Therefore, the width dimension in the left-right direction of the motion guide device can be reduced.
- rubber can be vulcanized and bonded to the side surface of the moving block.
- the displacement absorbing mechanism provided on the side surface of the moving block undergoes shear deformation. Absorbs displacement. Therefore, a relatively movable system with low rigidity in the vertical direction can be obtained. Further, since the displacement absorbing portion that undergoes shear deformation is provided on the side surface of the moving block, the cross sectional area of the displacement absorbing portion can be increased, and a rigid and relatively movable system can be obtained in the left-right direction.
- the displacement absorbing mechanism provided on the side surface of the moving block undergoes shear deformation. Absorbs displacement. Therefore, when the displacement absorbing mechanism is provided in the motion guide device, a motion guide device having low rigidity in the vertical direction can be obtained. In addition, since the displacement absorbing portion that undergoes shear deformation is provided on the side surface of the moving block, the sectional area of the displacement absorbing portion can be increased, and a motion guide device having high rigidity in the left-right direction can be obtained.
- FIG. 1 is a plan view of a relative movable system in which a motion guide device according to a first embodiment of the present invention is incorporated.
- FIG.5 Front view of motion guide device with displacement absorbing mechanism
- FIG. 7 Diagram showing deformation of the displacement absorption mechanism (Fig. 7 (A) is before deformation, Fig. 7 (B) is after deformation)
- FIG. 8 Plan view of the motion guide device with the displacement absorption mechanism attached
- FIG. 9 Front view of motion guide device with displacement absorbing mechanism
- FIG. 10 is a perspective view of a motion guide device according to a second embodiment of the present invention.
- FIG. 11 Front view of the motion guidance apparatus of FIG.
- FIG. 12 Plan view of the motion guide device of FIG.
- FIG. 13 Side view of the motion guide device of FIG.
- FIG. 15 is a perspective view showing another example of a mounting body.
- FIG. 17 is a perspective view showing a conventional displacement absorbing mechanism.
- FIG. 1 and 2 show a relative movable system in which a motion guide device according to a first embodiment of the present invention is incorporated.
- Fig. 1 shows a plan view of the relative movable system
- Fig. 2 shows a cross-sectional view along line ⁇ - ⁇ in Fig.
- the elongated mobile body 11 is surrounded by a frame-shaped base 12.
- the moving body 11 in the base 12 moves linearly along the base 12.
- the relative linear motion of the moving body 11 with respect to the base 12 is guided to the motion guide devices 13 and 14.
- the vertical direction and the horizontal direction are determined based on the state in which the bottom surface 30a of the track rail 15 is disposed on the lower side and the upper surface 30c is disposed on the upper side. ing.
- the side surface 30b of the track rail 15 may be on the upper side or the lower side. In such a case, the vertical direction and the horizontal direction are determined on the assumption that the bottom surface 30a of the track rail 15 is on the lower side.
- the moving body 11 has a flat shape and a constant cross-sectional shape.
- the moving body 11 has a pair of outer wall surfaces 11a parallel to each other.
- the frame-shaped base 12 surrounding the moving body 11 has a pair of inner wall surfaces 12a facing the pair of outer wall surfaces 11a of the moving body 11.
- a pair of motion guide devices 13 and 14 for guiding the moving body 11 to linearly move relative to 12 are arranged.
- the track rails 15 of the motion guide devices 13 and 14 are attached to the moving body 11, and the moving block 16 is attached to the base 12 on the fixed side.
- two moving blocks 16 are assembled on one track rail 15 (see FIG. 2).
- the moving body 11 is linearly driven by a driving source such as a ball screw mechanism, a linear motor, and a belt compressor (not shown).
- a displacement absorbing mechanism 17 that absorbs the vertical displacement of the moving body 11 is provided on the side surface of the moving block 16 of one of the pair of motion guiding devices 13 and 14. Yes. By this displacement absorbing mechanism 17, one motion guide device 13 escapes in the vertical direction as the movable body 11 is displaced in the vertical direction. The remaining motion guides 14 do not change position in the vertical direction.
- FIGS. 3 and 4 show the motion guide devices 13, 14 incorporated in the relative mobile system.
- FIG. 3 shows a side view of the motion guide devices 13 and 14, and FIG. 4 shows a perspective view.
- a saddle-shaped moving block 16 is slidably assembled to the track rail 15. Between the track rail 15 and the moving block 16, a plurality of balls 18 or rolling elements having a roller force are interposed so as to be able to roll.
- the track rail 15 is elongated and linearly extended.
- the track rail 15 has a bottom surface 30a, a pair of left and right side surfaces 30b, and an upper surface 30c, and is formed in a substantially square cross section.
- the track rail 15 is provided with a mounting hole 15b for mounting on the moving body.
- ridges 19 are formed on the upper part of the left and right side surfaces 30b of the track rail 15.
- two ball rolling grooves 15a extending along the track rails 15 are formed as rolling element rolling portions. Since the ridges 19 are formed on each of the left and right side surfaces of the track rail 15, two ball rolling grooves 15a are formed in total.
- the four ball rolling grooves 15a are arranged so that the motion guide device can receive a load substantially evenly in the vertical and horizontal directions in FIG.
- the vertical rigidity of the motion guide device itself excluding the displacement absorbing mechanism 17
- the rigidity in the horizontal direction is about 1: 1 to 3: 1.
- the number and arrangement of the ball rolling grooves 15a are appropriately determined according to the required rigidity.
- the moving block 16 includes a central portion 16a facing the upper surface 30c of the track rail 15, and a side wall portion 16b extending downward from the left and right sides of the central portion 16a and facing the left and right side surfaces 30b of the track rail 15.
- the moving block 16 has a steel moving block main body 20 and a pair of end plates 21 attached to both end surfaces of the moving block main body 20 in the moving direction.
- a load ball rolling groove 16c is formed as a load rolling element rolling portion facing the ball rolling groove 15a of the track rail 15.
- a total of four loaded ball rolling grooves 16c are also provided corresponding to the ball rolling grooves 15a of the track rail 15.
- the moving block body 20 is formed with a ball return passage 22 extending in parallel with the load ball rolling groove 15c at a predetermined interval.
- a U-shaped direction change path is formed in the end plate 21 made of resin attached to both ends of the moving block body 20.
- the load ball rolling groove 16c, the ball return passage 22 and the direction change path of these moving blocks 16 constitute a circuit-like ball circulation path (rolling element circulation path).
- a plurality of balls 18 are arranged and accommodated in the ball circulation path.
- a plurality of balls 18 roll between the ball rolling groove 15a of the track rail 15 and the load ball rolling groove 16c of the moving block 16.
- Load ball One end force of rolling groove 16c Ball 18 that has rolled to the other end enters the direction change path of end plate 21, passes through ball return path 22, then enters the direction change path of end plate 21 on the opposite side, It is returned again to one end of the load ball rolling groove 16c.
- the ball 18 circulates in the ball circulation path.
- FIG. 5 shows the motion guide device 13 to which the displacement absorbing mechanism 17 is attached.
- the displacement absorbing mechanism 17 is attached like an attachment between the side surface 23 of the moving block 16 and the base 12.
- the displacement absorbing mechanism 17 is not arranged between the upper surface 24 of the moving block 16 and the inner wall surface 12a of the base 12. During this time, a space is provided so that the base 12 can be displaced relative to the moving block 16 in the vertical direction.
- the displacement absorbing mechanism 17 It may be attached integrally to the side surface 23 of the lock 16.
- FIG. 6 is a perspective view of the displacement absorbing mechanism 17.
- the displacement absorbing mechanism 17 is formed by laminating a metal plate and a rubber layer parallel to the side surface 23 of the moving block 16. That is, the displacement absorbing mechanism includes a metal base plate 25 attached to the moving block 16, a metal attachment body 26 attached to the base 12, and a displacement absorption part sandwiched between the base plate 25 and the attachment body 26. It consists of 31.
- the displacement absorbing portion 31 may be composed of a single rubber layer, and also has a laminated rubber force in which a plurality of layers of metal intermediate plates 28 and a plurality of layers of rubber layers 27 are laminated as in this embodiment.
- the base plate 25 is formed with mounting holes 25a for mounting on the screw holes on the side surface 23 of the moving block 16. A screw hole is not processed in the upper surface 24 of the moving block 16.
- the mounting body 26 is formed with a mounting hole 26a for mounting to a bracket 29 (see FIG. 5) suspended from the base 12. Adhesion using an adhesive or vulcanization adhesion that is performed simultaneously with rubber molding is used to attach the base plate 25 and the attachment body 26 to the rubber layer 27.
- the displacement absorbing portion 31 is provided on the side surface 23 of the moving block 16, the sectional area of the displacement absorbing portion 31 can be increased, and a motion guide device having high rigidity in the left-right direction can be obtained. If there is a metal intermediate plate 28, the displacement absorbing mechanism 17 is more rigid in the left-right direction.
- the displacement absorbing mechanism 17 When the displacement absorbing mechanism 17 is provided, even when the moving block 16 is displaced upward and downward relative to the base 12, the load due to the displacement is not directly transmitted to the inside of the moving block 16. For example, if the displacement absorbing mechanism 17 is not provided and the base 12 is displaced 0.5 mm, A load of 0.5mm displacement is applied to the inside of the moving block 16. On the other hand, when the displacement absorbing mechanism 17 is provided, the displacement absorbing mechanism 17 absorbs the displacement of 0.5 mm, so that an excessive load is not applied to the inside of the moving block 16. Therefore, the life of the rolling elements inside the moving block 16 can be extended. Since the upper surface 24 of the moving block 16 is provided with a space, the base 12 is easily displaced in the vertical direction toward the upper surface 24 of the moving block 16.
- the vertical rigidity the horizontal rigidity can be made extremely different to less than 1: 100 or the like.
- “rigidity” is the spring constant, and the unit is NZmm.
- the reason why the rigidity in the vertical direction is weakened is to absorb the vertical displacement of the base 12 relative to the moving block 16.
- the rigidity in the left-right direction is increased because, for example, the linear motor coil and magnet that move with a slight clearance, such as the moving body 11 being displaced in the left-right direction, these interfere with each other. This is to prevent it.
- the reason why two moving blocks 16 are assembled per track rail 15 is to increase the lateral rigidity.
- the up / down stiffness and the left / right stiffness are appropriately set according to the structure of the relative movable system and the usage environment.
- FIG. 7 shows a deformation of the displacement absorbing mechanism 17.
- Fig. 7 (A) is before deformation and Fig. 7 (B) is after deformation.
- the shear spring constant of the displacement absorbing mechanism 17 (the spring constant when the mounting body 26 is displaced in the vertical direction with respect to the base plate 25) is the compression spring constant (the mounting body 26 is fixed to the base plate 25).
- the compression spring constant the mounting body 26 is fixed to the base plate 25.
- the attachment body 26 can be easily displaced in the vertical direction with respect to the base plate 25.
- the number of laminated rubber layers may be increased. Factors such as rubber hardness, thickness, area, and number of sheets are adjusted according to the target shear spring constant and compression spring constant.
- the displacement absorbing mechanism is not only a laminate of a metal plate and a rubber layer, but also an elastic formed with slits such as metal pins and couplings.
- a body or a coil spring can also be used.
- metal pins may buckle, and elastic bodies with slits may concentrate stress on thin parts.
- the displacement absorbing mechanism 17 is attached to the left and right side surfaces 23 of the moving block 16.
- the clearance of the upper surface 24 of the moving block 16 is managed by connecting the displacement absorbing mechanism 17 and the base 12 with a shim interposed between the upper surface 24 of the moving block 16 and the base 12, and then This is done by extracting the shim.
- the size of the clearance of the upper surface 24 of the moving block 16 is set to be equal to or greater than the amount of vertical displacement of the base 12 with respect to the moving block 16.
- FIGS. 10 to 13 show a motion guide apparatus according to the second embodiment of the present invention.
- 10 is a perspective view of the motion guide device
- FIG. 11 is a front view
- FIG. 12 is a plan view
- FIG. 13 is a side view.
- the rigidity of the motion guide device in the left-right direction is increased and the rigidity in the vertical direction is decreased. It is the same as the device.
- a device for reducing the lateral width of the motion guide device provided with the displacement absorbing mechanism Although it is not as high as the rigidity in the direction, it has been devised to increase the rigidity in the vertical direction.
- the motion guide device includes a track rail 15 having a bottom surface 30a, a side surface 30b, and a top surface 30c, a central portion 16a facing the top surface 30c of the track rail 15, and a side wall portion 16b facing the side surface 30b of the track rail 15.
- a moving block 16 having: Since the structure of the track rail 15 and the moving block 16 is the same as that of the motion guide device of the first embodiment, the same reference numerals are given and description thereof is omitted. At both ends of the track rail 15 in the axial direction, stoppers 33 for limiting the stroke of the moving block 16 are provided.
- a displacement absorbing mechanism 38 is provided on the side surface 23 of the moving block 16.
- the displacement absorbing mechanism 38 includes a mounting body 34 attached to the base 12, and a displacement absorbing portion 37 interposed between the side surface 23 of the moving block 16 and the mounting body 34.
- the displacement absorbing portion 37 is a laminated rubber including a metal plate 36 parallel to the side surface 23 of the moving block 16 and a rubber layer 35 such as NC rubber.
- the rubber layer 35 is glued to the side surface 23 and the attachment body 34 of the moving block 16 by carbosulfuric. This rubber layer 35 is a moving block connected only by the side surface 23 of the moving block 16. Part of the top 24 of 16
- the mounting body 34 has a mounting body side wall portion 34a facing the side surface 23 of the moving block 16, and an mounting body upper wall portion 34b facing the upper surface 24 of the moving block 16, and has an L-shaped cross section. It is formed.
- the attachment body 34 is divided into two corresponding to the pair of left and right side wall portions 16b of the moving block 16.
- a mounting hole 39 (see FIG. 12) for mounting the mounting body 34 to the base 12 is provided in the mounting body upper wall 34b of the mounting body 34.
- a female screw is machined into the mounting hole 39.
- a mounting hole for mounting on the base 12 is not processed on the upper surface 24 of the moving block 16.
- FIG. 14 shows an example of a method of vulcanizing and bonding rubber to the side surface 23 of the moving block 16.
- the moving block 16 with the side surface 23 coated with adhesive is placed on the molds 41 and 42.
- the mold 41 is in close contact with the inner wall surface of the moving block 16, and the mold 42 is in close contact with the upper surface 24 of the moving block 16.
- an attachment body 34 with an adhesive applied inside is disposed on the side of the moving block 16.
- a metal plate 36 is interposed between the side surface 23 of the moving block 16 and the mounting body 34 and from both sides in the longitudinal direction.
- the metal plate 36 is supported at both ends in the longitudinal direction.
- a rubber compound is injected from the injection port 40 of the attachment body 34.
- the rubber compound moves around the side surface 23 and the metal plate 36 of the moving block 16 and also moves to the upper surface 24 of the moving block 16.
- a pressure P is applied between the mounting body 34 and the side surface 23 of the moving block 16 to raise the temperature.
- rubber is press vulcanized, and the rubber layer 35 is vulcanized and adhered to the side surface 23 of the moving block 16 and the inside of the mounting body 34.
- a portal casing shape that covers the upper surface 24 and the side surface 23 of the moving block 16 is also conceivable.
- rubber press vulcanization it is necessary to pressurize the rubber compound. If the mounting body 34 is formed in a portal casing shape, even if pressure P is applied, it is impossible to apply pressure to the rubber compound injected between the side surface 23 of the moving block 16 and the mounting body 34. Therefore, it is necessary to separate the mounting body 34 into two.
- the upper surface side of the moving block 16 has a single-layer rubber structure.
- the side surface has a two-layer rubber structure with a metal plate 36 in between.
- the rubber is also distributed to the upper surface 24 of the moving block 16 where the tip 42a of the mold 42 does not cover the entire upper surface 24 of the moving block 16.
- the rubber of the mold 42 is prevented so that the rubber does not spread on the upper surface 24 of the moving block 16.
- the tip end portion 42 a may cover the entire upper surface 24 of the moving block 16.
- the moving block 16 replaces the base plate 25 (see Fig. 6) of the displacement absorbing mechanism 17 of the first embodiment. There is no need to provide plate 25.
- the mounting body 34 is formed in an L shape, and the mounting body side wall 34a is made thicker by covering the mounting hole 39 with the mounting body upper wall 34b on the upper surface side of the moving block 16. It is not necessary to provide the bracket 29 (see FIG. 5) like the displacement absorbing mechanism 17 of the embodiment. Therefore, the width dimension in the left-right direction of the motion guide device can be reduced.
- the vertical and horizontal rigidity of the motion guide device can be freely set.
- the upper surface side of the moving block 16 has a single-layer rubber structure and the side surface side has a two-layer rubber structure with a metal plate 36 in between
- the base 12 is easily displaced toward the moving block 16.
- the rigidity of the motion guide device is determined by the thickness of the rubber layer 35, the area of the rubber layer 35, the presence or absence of the metal plate 36, and the like. These are appropriately determined according to the specifications of the motion guide device. For example, when it is desired to further increase the vertical rigidity, a metal plate 36 may be interposed between the upper surface 24 of the moving block 16 and the mounting body 34, or a larger area of the upper surface 24 of the moving block 16 may be provided. The rubber layer 35 may be spread over. If the rigidity in the vertical direction is to be further lowered, the rubber layer 35 should be removed from the upper surface 24 of the moving block 16.
- the number of the metal plates 36 on the side surface of the moving block 16 may be increased to two or three.
- only the single rubber layer 35 may be used without the metal plate 36 interposed.
- the present invention is not limited to the embodiment described above, and various modifications can be made without departing from the scope of the present invention.
- the track rail of the motion guide device may be attached to the moving body, the force track rail attached to the base on the fixed side, the base, and the moving block attached to the moving body.
- the motion guide device of the present invention can be incorporated in various relative movable systems that require a displacement absorbing mechanism that is not limited to the relative movable system of the above embodiment.
- the displacement absorbing mechanism may be provided to absorb the displacement due to the mounting error and the processing error, which are necessary to absorb the displacement due to the thermal expansion and thermal contraction.
- the track rail may have an I shape instead of a substantially square shape.
- the track rail may not be linearly curved but may be curved.
- the present invention can be applied to a sliding motion guide device in which no rolling element is interposed between the track rail and the moving block, and also to a finite stroke type motion guide device in which the rolling element cannot circulate. Can be applied.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Health & Medical Sciences (AREA)
- Child & Adolescent Psychology (AREA)
- Bearings For Parts Moving Linearly (AREA)
- Support Of The Bearing (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/092,781 US8251587B2 (en) | 2005-11-08 | 2006-11-07 | Motion guide device, relative motion system and displacement absorbing mechanism |
CN200680041716XA CN101305191B (zh) | 2005-11-08 | 2006-11-07 | 运动引导装置、相对可动系统及位移吸收机构 |
DE112006003094.9T DE112006003094B4 (de) | 2005-11-08 | 2006-11-07 | Bewegungsführungsvorrichtung, Relativbewegungssystem und Verstellungsauffangmechanismus |
JP2007544146A JP4847965B2 (ja) | 2005-11-08 | 2006-11-07 | 運動案内装置、相対可動システム及び変位吸収機構 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005323526 | 2005-11-08 | ||
JP2005-323526 | 2005-11-08 |
Publications (1)
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WO2007055208A1 true WO2007055208A1 (ja) | 2007-05-18 |
Family
ID=38023211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/322194 WO2007055208A1 (ja) | 2005-11-08 | 2006-11-07 | 運動案内装置、相対可動システム及び変位吸収機構 |
Country Status (5)
Country | Link |
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US (1) | US8251587B2 (ja) |
JP (1) | JP4847965B2 (ja) |
CN (1) | CN101305191B (ja) |
DE (1) | DE112006003094B4 (ja) |
WO (1) | WO2007055208A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009145112A1 (ja) * | 2008-05-30 | 2009-12-03 | Thk株式会社 | リニアモータ |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
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TWI456122B (zh) * | 2011-12-30 | 2014-10-11 | Hiwin Tech Corp | 具覆蓋帶固定裝置的線性滑軌 |
GB201200888D0 (en) * | 2012-01-19 | 2012-02-29 | Hepco Slide Systems Ltd | Track systems |
TW201408895A (zh) * | 2012-08-28 | 2014-03-01 | Nat Univ Tsing Hua | 導引裝置 |
JP5541398B1 (ja) * | 2013-07-02 | 2014-07-09 | 日本精工株式会社 | テーブル装置、及び搬送装置 |
JP5594404B1 (ja) * | 2013-07-02 | 2014-09-24 | 日本精工株式会社 | テーブル装置、搬送装置、半導体製造装置、及びフラットパネルディスプレイ製造装置 |
USD835492S1 (en) * | 2015-02-24 | 2018-12-11 | Thk Co., Ltd. | Slide rail |
CN105443573A (zh) * | 2016-01-26 | 2016-03-30 | 河北书浩轴承有限公司 | 一种高速密封可调心深沟球轴承 |
JP1575127S (ja) * | 2016-11-16 | 2017-05-01 | ||
JP1575891S (ja) * | 2016-12-20 | 2017-05-08 | ||
JP1696218S (ja) * | 2021-03-29 | 2021-10-04 | ||
CN117869545B (zh) * | 2023-12-27 | 2024-05-31 | 东莞市高技传动科技有限公司 | 滑轨的侧板滑动结构及精密模组 |
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- 2006-11-07 WO PCT/JP2006/322194 patent/WO2007055208A1/ja active Application Filing
- 2006-11-07 JP JP2007544146A patent/JP4847965B2/ja active Active
- 2006-11-07 CN CN200680041716XA patent/CN101305191B/zh active Active
- 2006-11-07 US US12/092,781 patent/US8251587B2/en active Active
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Also Published As
Publication number | Publication date |
---|---|
JP4847965B2 (ja) | 2011-12-28 |
DE112006003094T5 (de) | 2008-10-16 |
JPWO2007055208A1 (ja) | 2009-04-30 |
DE112006003094B4 (de) | 2022-06-30 |
US20090154850A1 (en) | 2009-06-18 |
CN101305191B (zh) | 2012-09-26 |
CN101305191A (zh) | 2008-11-12 |
US8251587B2 (en) | 2012-08-28 |
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