WO2012020801A1 - 運動案内装置 - Google Patents
運動案内装置 Download PDFInfo
- Publication number
- WO2012020801A1 WO2012020801A1 PCT/JP2011/068291 JP2011068291W WO2012020801A1 WO 2012020801 A1 WO2012020801 A1 WO 2012020801A1 JP 2011068291 W JP2011068291 W JP 2011068291W WO 2012020801 A1 WO2012020801 A1 WO 2012020801A1
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- WO
- WIPO (PCT)
- Prior art keywords
- track rail
- seal portion
- moving block
- motion guide
- guide device
- 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
- F16C29/0633—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
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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
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
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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
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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
- F16C29/08—Arrangements for covering or protecting the ways
- F16C29/084—Arrangements for covering or protecting the ways fixed to the carriage or bearing body movable along the guide rail or track
Definitions
- a moving block is assembled to a track rail through rolling elements such as a large number of balls or rollers in which the moving block circulates infinitely, and a mounted object fixed to the moving block can freely reciprocate along the track rail.
- the present invention relates to a motion guide device capable of performing the above.
- a motion guide device in which a moving block carrying a movable body such as a table moves continuously along a track rail is frequently used.
- the moving block is assembled to the track rail via a number of balls or rollers (hereinafter referred to as “rolling elements”), and the rolling element is interposed between the moving block and the track rail.
- rolling elements balls or rollers
- the moving block is provided with an infinite circulation path of rolling elements, and the moving block can be continuously moved along the track rail by circulating the rolling elements in the infinite circulation path. It has become.
- the moving block is generally equipped with a pair of end seal members at both ends in the moving direction.
- the end seal member has an end seal portion that is in sliding contact with the surface of the track rail.When the moving block moves along the track rail, the end seal portion wipes off the adherence of the track rail from the surface of the track rail. , Such a deposit is prevented from entering the inside of the moving block (Patent Document 1).
- a plurality of end seal members are stacked and attached to the end of the moving block. That is, in the conventional motion guide device, the end seal member removes the adherence of the track rail with the passage of the moving block, and the adhering matter is put inside the moving block by increasing the certainty of the removal. Preventing intrusion.
- the track rail is fastened to a fixed portion such as a bed using a mounting bolt, and an insertion hole for the mounting bolt is formed through the track rail.
- a fixed portion such as a bed using a mounting bolt
- an insertion hole for the mounting bolt is formed through the track rail.
- Measures to solve the problems related to the existence of such track rail insertion holes may be that the insertion holes are blocked after the installation bolts are inserted, and this is implemented when laying the track rails as necessary. That is, after fastening the mounting bolt and fastening the track rail to the fixed portion, the plug is fitted into the insertion hole of the track rail, and the surface of the track rail that the end seal portion is in sliding contact with is smooth without a step. Keep it.
- the end seal portion of the end seal member needs to be in sliding contact with the surface of the track rail without a gap, it is pressed against the track rail with elastic deformation. Further, in order to prevent the adherence of the track rail from passing through the end seal portion, the end seal portion needs to be in contact with the track rail with a certain amount of pressure. For this reason, the presence of the end seal member tends to increase the movement resistance of the moving block with respect to the track rail.
- the present invention has been made in view of such problems, and an object of the present invention is to eliminate the phenomenon that the end seal portion of the passage forming member attached to the moving block is caught in the insertion hole of the track rail, thereby An object of the present invention is to provide a motion guide device capable of preventing the wear and loss of a seal portion and reducing the movement resistance of a moving block with respect to a track rail.
- the insertion holes of the mounting bolts are formed through the longitudinal direction at appropriate intervals, and a plurality of rolling element rolling surfaces are sandwiched between the insertion holes.
- a track rail formed along the longitudinal direction, a moving block which is assembled to the track rail via a large number of rolling elements and includes an infinite circulation path for the rolling elements, and is freely movable along the track rail; , Is composed of.
- the moving block is provided with an adhering passage for passing the adhering matter of the track rail from one end to the other end of the moving block at a position facing the insertion hole of the track rail. Further, a passage forming member constituting an entrance of the deposit passage is fixed to both ends of the moving block in the moving direction.
- Such a passage forming member is provided between the end seal portions and a pair of end seal portions that traverse the rolling element rolling surface of the track rails and abut against the surface of the track rails, and is attached to the moving block.
- a passage opening that forms the entrance of the passage.
- an attachment passage is provided at a position opposite to the track rail insertion hole with respect to the moving block, and when the moving block moves along the track rail, the insertion The deposit around the hole passes through the moving block through the deposit passage formed in the moving block.
- the passage forming member fixed at both ends in the moving direction of the moving block is provided with an end seal portion that crosses the rolling element rolling surface of the track rail and is in sliding contact with the surface of the track rail. Deposits on the rolling element rolling surface are removed at the end seal portion as the moving block moves.
- the passage forming member is provided with a passage opening that forms the entrance of the deposit passage of the moving block, and the pair of end seal portions provided in the passage forming member is divided by the passage opening.
- the passage opening is also provided at a position facing the insertion hole of the track rail, and the end seal portion is connected to the insertion hole of the track rail. It does not exist at the opposite position. That is, in the motion guide device of the present invention, the end seal portion of the passage forming member is not caught on the peripheral edge of the insertion hole of the track rail, thereby preventing wear and loss of the end seal portion in use over time. It is possible.
- the end seal portion since the end seal portion does not exist in the portion where the passage opening is formed, the end seal portion is in sliding contact with the surface of the track rail as compared with the conventional motion guide device. Less is. Accordingly, the movement resistance of the moving block relative to the track rail can be reduced.
- FIG. 1 shows an example of the exercise
- FIG. 9 It is the schematic which shows 2nd embodiment of the connection structure of an end seal part and an inner seal part. It is a perspective view which shows the detail of the connection structure shown in FIG. 9, and has shown the state which isolate
- FIG. 1 shows an embodiment of a motion guide device to which the present invention is applied.
- This motion guide device includes a track rail 1 formed in a straight line, a moving block 2 that is assembled to the track rail 1 via a ball 3 as a rolling element, and has an infinite circulation path for the ball 3 therein. It is comprised from a pair of channel
- the ball 3 rolls on the track rail and circulates in the endless circulation path of the moving block 2 so that the moving block 2 reciprocates on the track rail 1.
- a part of the moving block 2 is drawn in order to facilitate understanding.
- the track rail 1 is formed in a substantially rectangular cross section, and two rolling element rolling surfaces 11 on which the balls 3 roll are formed along the longitudinal direction on each side surface.
- insertion holes 12 are formed through the track rail 1 at appropriate intervals in the longitudinal direction.
- the moving block 2 includes a metal block main body 21 and a pair of lid bodies 22 fixed to both front and rear end faces in the moving direction of the block main body 21.
- the block main body 21 has four load rolling surfaces facing the rolling element rolling surface 11 of the track rail 1, and corresponds to each load rolling surface and has an inner diameter slightly larger than the diameter of the ball 3.
- the load rolling surface is opposed to the rolling element rolling surface 11 of the track rail 1, thereby constituting a load path in which the ball 3 rolls while applying a load acting on the moving block 2.
- each lid body 22 has a substantially U-shaped direction changing path through which the ball moves between the load passage and the ball return hole.
- Each cover body is provided with four direction changing paths corresponding to the four load rolling surfaces of the block body.
- the direction changing path provided on one of the lids causes the ball 3 that has finished rolling on the load path to become unloaded.
- the direction change path provided in the ball return hole of the block main body 21 and provided in the other cover body sends the ball 3 that rolls in the ball return hole in an unloaded state to the entrance of the load passage. That is, by fixing the pair of lid bodies 22 to both end faces of the block main body 21, an endless circulation path for the balls 3 is completed in the moving block 2.
- the balls 3 housed in the endless circulation path are protected by a synthetic resin belt 31 in order to maintain the alignment state of the balls 3.
- FIGS. 2 and 3 show a first embodiment of a pair of passage forming members 4 fixed to the lid 22.
- the passage forming member 4 is fixed from above the lids 22 to the outside in the moving direction of the moving block 2 by fixing bolts 43.
- This passage forming member 4 has a guide groove having a slightly larger cross-sectional shape than the cross-sectional shape of the track rail 1 and is formed in a channel shape.
- a pair of end seal portions 41 that are in sliding contact with the surface of the track rail 1 are provided at the edge of the guide groove.
- a passage opening 42 is formed between the pair of end seal portions 41 corresponding to the insertion hole 12 of the track rail 1.
- the passage forming member 4 is configured by vulcanizing and bonding an elastic body such as urethane rubber to the surface of the metal thin plate having the guide groove, and the end seal portion 41 is formed of an elastic body. . Accordingly, the passage forming member 4 is assembled to the track rail 1 so as to slightly crush the end seal portion 41.
- Each end seal portion 41 includes a first seal portion 41 a that is in sliding contact with the upper surface of the track rail 1, and a second seal that crosses the rolling element rolling surface 11 of the track rail 1 and is in sliding contact with the side surface of the track rail 1. Part 41b.
- the first seal portion 41 a is formed with an inclination exclusion surface 41 c that is inclined toward the passage opening 42 at a position adjacent to the passage opening 42.
- FIG. 4 is a perspective view showing a contact portion of the end seal portion 41 with the track rail 1.
- the first seal portion 41 a and the second seal portion 41 b that constitute the end seal portion 41 have seal lips 44 and 45 that are arranged in double at the contact end with the track rail 1.
- the seal lip 44 located on the outer side with respect to the moving block 2 is a dust lip, which mainly acts on the deposits on the track rail 1 in the moving direction of the moving block 2, and is attached as the moving block 2 moves.
- the kimono is removed from the track rail 1.
- the seal lip 45 disposed in the vicinity of the moving block 2 is an oil lip, and a lubricant such as grease filled in the moving block 2 adheres to the track rail 1 and flows out of the moving block 2. Is preventing.
- Each seal lip 44, 45 has a tapered tip at the abutting position on the track rail 1, and suppresses an increase in surface pressure when contacting the track rail 1.
- the dust strip 44 of the first seal portion 41a and that of the second seal portion 41b are continuous without interruption, and the oil lip 45 of the first seal portion 41a and that of the second seal portion 41b are similarly continuous. is doing. Further, a groove is formed between the dust lip 44 and the oil lip 45, and the dust lip 44 and the oil lip 45 are in contact with the surface of the track rail 1 in an independent state.
- an inclination exclusion surface 41c formed in the first seal portion 41a adjacent to the passage opening 42 is continuous with the dust lip 44 of the first seal portion 41a, and the first seal portion 41a is tracked.
- the deposit removed from the upper surface of the rail 1 has a function of pushing away in the direction of the passage opening 42 as the moving block 2 advances.
- a double seal lip structure is provided for the end seal portion 41.
- a single seal lip structure may be used for carrying out the present invention.
- the passage forming member 4 When the two passage forming members 4 configured in this way are fixed to the front and rear ends of the moving block 2 in the moving direction, and the moving block 2 is moved along the track rail 1, the passage forming member 4 is provided.
- the pair of end seal portions 41 function to remove the deposits on the track rail 1, and deposits accumulate on the contact end with the track rail 1 in the end seal portion 41 located on the moving block 2 in the traveling direction side.
- the passage opening 42 is provided between the pair of end seal portions 41, and the adhering matter of the track rail 1 is not removed in the passage opening 42 and enters the moving block 2 as it is. To do.
- the moving block 2 Since there is a gap narrower than the diameter of the ball 3 between the track rail 1 and the moving block 2, the moving block 2 enters the moving block 2 from the passage opening 42 located on the front side in the traveling direction. The attached deposits are discharged out of the moving block 2 from the passage opening 42 located on the rear side in the traveling direction without being removed.
- the deposit block 40 () allows the deposit on the track rail 1 to pass through the moving block 2 from one end to the other end of the moving block 2. 3) (indicated by a one-dot chain line in FIG. 3).
- the deposit passage 40 is provided at a position facing the insertion hole 12 of the track rail 1, and the insertion hole 12 passes through the deposit passage as the moving block 2 advances.
- the passage opening 42 formed in the passage forming member 4 is configured as an inlet or an outlet of the deposit passage 40 provided in the moving block 2.
- the deposit on the upper surface of the track rail 1, particularly the deposit around the insertion hole 12 of the mounting bolt, passes through the moving block 2 without being eliminated by the passage forming member 4, It remains on the track rail 1 as it is.
- a passage opening 42 is formed in the passage forming member 4 at a position facing the insertion hole 12 of the track rail 1.
- the end seal portion 41 that abuts the track rail does not exist at the site where 42 is formed. For this reason, even if the moving block 2 is moved along the track rail 1, the sealing member that seals the gap between the track rail 1 and the moving block 2 is caught on the periphery of the insertion hole 12 of the track rail 1 as in the conventional case. Therefore, it is possible to prevent the seal member from being worn or damaged during use over time.
- the movement guide device according to the present invention is equivalent to the presence of the passage opening 42, and the end seal portion 41 of the passage forming member 4 is attached to the track rail 1 with pressure compared to the conventional movement guide device. Since the contact length is shortened, the movement resistance of the movement block 2 with respect to the track rail 1 can be reduced.
- the first seal portion 41 excludes it from the surface of the track rail 1. Since a part of the adhered material is guided to the adhered material passage 40, it is possible to suppress excessive accumulation of the adhered material on the first seal portion 41a. Therefore, it is possible to further reduce the movement resistance of the moving block 2 with respect to the track rail 1 by forming such an inclination exclusion surface 41c.
- FIG. 5 is a front view showing a second embodiment of the passage forming member.
- the inclination exclusion surface 41c is formed only in a part adjacent to the passage opening 42 of the first seal portion 41a.
- the entire tip end portion of the first seal portion 141a that is in contact with the upper surface of the track rail is formed as the inclination exclusion surface 141c.
- the passage forming member 104 of the second embodiment most of the deposits excluded from the upper surface of the track rail by the first seal portion 141a can be guided to the deposit passage 40. It is possible to prevent deposits from accumulating on the tip of the seal portion 141a, and the moving block 2 fitted with the passage forming member 104 can move more easily with respect to the track rail 1.
- the dust or coolant liquid that adheres to the upper surface of the track rail 1 and passes through the deposit passage 40 of the moving block 2 is applied to the adjacent rolling element rolling surface 11 while passing through the deposit passage 40.
- FIG. 6 and 7 show the inner seal plate 5 provided with the inner seal portion 50.
- FIG. 1 the internal seal plate 5 is attached to the lower surface of the moving block 2 at a position facing the upper surface of the track rail 1.
- the inner seal plate 5 includes a metal fixed plate 51 having a width slightly smaller than the width of the upper surface of the track rail 1 and a pair of inner seal portions 50 provided along the long side of the fixed plate 51.
- the inner seal portion 50 is made of an elastic body such as urethane rubber, and is vulcanized and bonded to the long side of the fixed plate simultaneously with molding.
- Each inner seal portion 50 is provided along the rolling element rolling surface 11 of the track rail 1 and is in contact with the upper surface of the track rail 1 in which the insertion hole 12 is provided, and between the pair of inner seal portions 50.
- the insertion hole 12 of the track rail 1 is positioned at the position. That is, the fixed plate 51 is provided so as to cover the insertion hole 12 of the track rail 1 from above.
- the tip of each inner seal portion 50 in contact with the track rail 1 is formed as a tapered seal lip 50a, so that an increase in surface pressure when contacting the track rail 1 is suppressed.
- a single seal lip 50a is provided for the inner seal portion 50.
- a double seal is provided.
- a lip structure may be provided.
- FIG. 4 shows the inner seal portion 50 that abuts against the back side of the end seal portion 4. More specifically, the end portion of the inner seal 50 is in contact with the back surface side of the first seal portion 41 a that is in contact with the upper surface of the track rail 1. Part of the dust lip 44 is continuous with the seal lip 50 a of the inner seal part 50.
- FIG. 9 shows a second embodiment of the connection structure between the end seal portion 41 and the inner seal portion 50.
- the end face in the longitudinal direction of the inner seal portion 50 is abutted against the back surface of the end seal portion 41.
- a pair of connecting seal portions 52 bent with respect to the inner seal portion 50 are provided at both ends in the longitudinal direction, and each of the connecting seal portions 52 of the passage forming member 4 attached to both ends of the moving block 2 is provided.
- the end seal portion 41 is configured to abut.
- connection seal portion 52 When the connection seal portion 52 is brought into contact with the end seal portion 41, the end of the connection seal portion 52 may be connected to the end of the end seal portion 41 facing the passage opening 42. From the viewpoint of surely sealing the boundary between the inner seal portion 50 and the end seal portion 41, when the connecting seal portion 52 is brought into contact with the end seal portion 41, both of them overlap each other to some extent. Preferably they are arranged. As a result, the boundary between the inner seal portion 50 and the end seal portion 41 can be reliably sealed, and the deposit on the track rail 1 passing through the deposit passage 40 is applied to the rolling element rolling surface 11 of the track rail 1. Intrusion can be effectively prevented.
- a connecting seal portion 52 bent with respect to the inner seal portion 50 is superposed on the outer surface of the end seal portion 41, that is, the surface opposite to the moving block 2, and in this state the inner seal portion 50 is overlapped.
- the seal portion 50 is fixed to the moving block 2, the boundary between the inner seal portion 50 and the end seal portion 41 can be more reliably sealed.
- the total length of the inner seal portion 50 is longer than the total length of the moving block 2.
- FIG. 10 and 11 show more specifically the connection structure between the end seal portion 41 and the inner seal portion 50 described in FIG. 9, and FIG. 10 shows that the inner seal portion 50 and the end seal portion 41 are separated.
- FIG. 11 shows a state where the inner seal portion 50 is slid in the direction of the arrow and connected to the end seal portion 41.
- the end seal portion 41 is formed with a recess 46 so as to cut out a part of the first seal portion 41 a adjacent to the passage opening 42, and the connecting seal portion 52 protruding from the inner seal portion 50 is provided. It is configured to fit into the recess 46.
- the recess 46 is formed by cutting out the dust lip 44 of the first seal portion 41a, while the connecting seal portion 52 has a seal lip 52a continuous from the seal lip 50a of the inner seal portion 50. Is formed. For this reason, when the coupling seal portion 52 is fitted in the recess 46 of the end seal portion 41, the coupling seal portion is disposed so as to overlap the oil lip of the first seal portion, and the seal lip 52a of the coupling seal portion 52 is provided. It is connected to the dust strip 44 of the first seal portion 41a, and a continuous seal structure is formed from the first seal portion 41a to the inner seal portion 50.
- connection seal portion 52 since the seal lip 52a that connects the dust lip 44 of the first seal portion 41a and the seal lip 50a of the inner seal portion 50 is formed in the connection seal portion 52, the inner seal portion and the connection seal portion An inclination exclusion surface 53 is formed at the corner where the two intersect. This inclination exclusion surface 53 exhibits the same function as the inclination exclusion surface 41c formed in the first seal portion in the first embodiment, and is deposited on the tip of the seal lip 52a of the connection seal portion 52 as the moving block 2 moves. The attached matter on the track rail 1 is moved in the direction of the passage opening 42 to prevent the attached matter from accumulating on the connecting seal portion 52.
- the inner seal portion 50 is formed at both ends in the longitudinal direction of the inner seal portion 50 by sliding the inner seal portion 50 in a direction perpendicular to the longitudinal direction, as indicated by arrows in FIG. It is possible to combine the connected sealing portion 52 simultaneously with the pair of end seal portions 41 positioned in the front and rear of the moving block 2 in the moving direction. For this reason, it is difficult to configure the pair of inner seal portions 50 facing each other with the insertion hole 12 of the track rail 1 interposed therebetween as a single inner seal plate 5 as shown in FIG. It is preferable that the part 50 is configured to be mounted separately on the moving block 2.
- FIG. 12 schematically shows a connection structure between the end seal portion 41 and the inner seal portion 50 of the passage forming member 4 shown in FIGS. 10 and 11.
- the connecting seal portion 52 protruding from the inner seal portion 50 only fits into the recess 46 of the end seal portion 41, so that the inner seal portion 50 is moved during the movement of the moving block 2.
- the coupling state between the end seal portion 41 and the end seal portion 41 becomes unstable, and a gap is generated between the connection seal portion 52 and the dust strip 44 of the first seal portion 41a. Therefore, as shown in FIG.
- a fitting projection 54 is formed at the tip of the coupling seal portion 52, while a locking groove 47 for accommodating the fitting projection 54 is formed in the first seal portion 41a. In the state where the inner seal portion 50 and the end seal portion 41 are connected, the fitting projection 54 is configured to be fitted and held in the locking groove 47.
- the inner seal portion 50 can be more firmly connected to the end seal portion 41, and the inner block 50 moves while the moving block 2 is moving with respect to the track rail 1. It is possible to prevent the connection between the seal portion 50 and the end seal portion 41 from being loosened, and to ensure continuity between the connecting seal portion 52 and the dust lip 44 of the first seal portion 41a.
- FIG. 13 is a schematic diagram showing a modification of the connection structure shown in FIG.
- a locking projection 48 that protrudes in a direction orthogonal to the mounting direction of the inner seal 50 (in the direction of the arrow in FIG. 13) is provided with respect to the recess 46 of the end seal portion 41.
- the protruding coupling seal portion 52 is provided with a holding hole 55 into which the locking projection 48 is fitted, and in the state where the coupling seal portion 52 is fitted in the recess 46 of the first seal portion 41a, the locking projection 48 is provided. Is inserted into the holding hole 55.
- the processing error cannot be completely eliminated. Therefore, as described above, the pair of the moving blocks 2 provided at both ends.
- the interval between the pair of connecting seal portions 52 may be different depending on the accumulation of processing errors. It may be slightly larger or smaller than the interval. In the structure shown in FIG. 13, even if a machining error occurs by giving a slight gap to the fitting state of the connecting seal portion 52 and the recess 46 in the longitudinal direction of the inner seal portion 50, The connecting seal portion 52 can be fitted into the recess 46 of the first seal portion 41a.
- the height of the stud 48 is determined in consideration of the maximum accumulated amount of dimensional error of each member along the moving direction of the moving block 2.
- the locking projection 48 is formed in the recess 46 of the end seal portion 41 and the holding hole 55 is formed in the connection seal portion 52.
- this relationship may be reversed.
- a similar locking projection may be formed on the front and back of the fitting projection 54 shown in FIG.
- the motion guide apparatus of the present invention is not necessarily used by laying the track rail 1 on a horizontal plane, and often uses the track rail 1 laid on a wall surface.
- a side seal portion 6 that closes the gap between the side surface of the track rail 1 and the moving block 2 is provided along the longitudinal direction of the track rail 1. preferable.
- the side seal portion 6 When the side seal portion 6 is provided in this way, the end portion in the longitudinal direction of the side seal portion 6 is abutted against the back surface side of the second seal portion 41b of the end seal portion 41 as shown in FIG. It is preferable to connect the two without any gap.
- connection structure between the side seal part and the second seal part it is possible to adopt the connection structure between the first seal part 41a and the inner seal part 50 described with reference to FIGS. . That is, connecting seal portions are provided at both ends in the longitudinal direction of the side seal portion 6, and this connection seal portion is overlapped with the second seal portion 41 b, thereby connecting the side seal portion 6 and the end seal portion 41. Can be planned.
- the sealing structure is formed so as to surround the load rolling surface of the moving block 2 together with the connection structure of the inner seal part and the end seal part described above. It can be provided. That is, the passage forming member 4, the inner seal portion 5, and the side seal portion 6 connected to each other surround the rolling region of the ball 3 on the track rail 1, and the intrusion of the deposit on the track rail 1 into the rolling region Can be prevented.
- the track rail is formed in a straight line shape, but it may be formed in an arc shape with a constant curvature.
- a ball is used as the rolling element, but a roller can be applied.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
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- Bearings For Parts Moving Linearly (AREA)
- Sealing Of Bearings (AREA)
Abstract
Description
Claims (5)
- 取付けボルトの挿入孔(12)が長手方向に適宜間隔をおいて貫通形成されると共に、かかる挿入孔を挟んで複数条の転動体転走面(11)が長手方向に沿って形成された軌道レール(1)と、
多数の転動体(3)を介して前記軌道レールに組み付けられると共に前記転動体の無限循環路を備え、前記軌道レールに沿って自在に移動可能な移動ブロック(2)と、を備えた運動案内装置において、
前記移動ブロック(2)には、前記軌道レール(1)の挿入孔(12)との対向位置に、当該軌道レールの付着物を移動ブロックの一端から他端へ通過させる付着物通路(40)が設けられ、また、
前記移動ブロック(2)の移動方向の両端には前記付着物通路(40)の入口を構成する通路形成部材(4)が固定され、
かかる通路形成部材(4)は、前記軌道レール(1)の転動体転走面(11)を横断すると共に当該軌道レール(1)の表面に当接する一対のエンドシール部(41)と、これらエンドシール部の間に設けられると共に前記移動ブロック(2)の付着物通路(40)の入口をなす通路開口部(42)と、を有していることを特徴とする運動案内装置。 - 前記通路形成部材(4)のエンドシール部(41)には、前記軌道レール(1)の付着物を前記通路開口部(42)に向けて移動させる傾斜排除面(41c)が前記通路開口部に隣接して形成されていることを特徴とする請求項1記載の運動案内装置。
- 前記移動ブロック(2)には、前記軌道レール(1)の挿入孔(12)を挟んでその両側に位置すると共に前記軌道レールの転動体転走面(11)に沿って当該軌道レールに当接して前記付着物通路(40)を区画する一対のインナシール部(50)が設けられ、各インナシール部(50)の長手方向の両端は前記通路形成部材(4)のエンドシール部(41)と接続されていることを特徴とする請求項2記載の運動案内装置。
- 前記インナシール部(50)の長手方向の両端には当該インナシール部に対して屈曲した一対の連結シール部(52)が設けられ、これら連結シール部(52)がエンドシール部(41)と当接していることを特徴とする請求項3記載の運動案内装置。
- 前記インナシール部(50)は、前記連結シール部(52)を前記エンドシール部(41)の移動ブロック(2)と反対側の面に重ね合わせた状態で、前記移動ブロック(2)に固定されていることを特徴とする請求項4記載の運動案内装置。
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US13/811,608 US8596868B2 (en) | 2010-08-11 | 2011-08-10 | Motion guide device |
DE112011102689.7T DE112011102689B4 (de) | 2010-08-11 | 2011-08-10 | Bewegungsführungsvorrichtung |
CN201180037048.4A CN103038524B (zh) | 2010-08-11 | 2011-08-10 | 运动引导装置 |
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JP (1) | JP4964997B2 (ja) |
CN (1) | CN103038524B (ja) |
DE (1) | DE112011102689B4 (ja) |
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JP2013087893A (ja) * | 2011-10-19 | 2013-05-13 | Nsk Ltd | 直動案内装置 |
JP5874337B2 (ja) * | 2011-11-16 | 2016-03-02 | 日本精工株式会社 | リニアガイド装置のシール機構 |
CN105257697A (zh) * | 2015-09-28 | 2016-01-20 | 温州台诠机械有限公司 | 一种新型具有防尘片的线性滑轨 |
CN107477346B (zh) * | 2017-09-30 | 2020-11-03 | 京东方科技集团股份有限公司 | 导轨注油工具 |
DE102017128519A1 (de) * | 2017-12-01 | 2019-05-09 | Schaeffler Technologies AG & Co. KG | Abstreifer für eine Führungsschiene |
WO2019109269A1 (zh) * | 2017-12-06 | 2019-06-13 | 舍弗勒技术股份两合公司 | 端部密封装置和直线导引系统 |
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TW201233918A (en) | 2012-08-16 |
CN103038524B (zh) | 2015-07-01 |
JP2012057793A (ja) | 2012-03-22 |
JP4964997B2 (ja) | 2012-07-04 |
US8596868B2 (en) | 2013-12-03 |
DE112011102689B4 (de) | 2014-07-31 |
CN103038524A (zh) | 2013-04-10 |
DE112011102689T5 (de) | 2013-05-29 |
TWI414694B (zh) | 2013-11-11 |
US20130121625A1 (en) | 2013-05-16 |
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