JP2013083347A - Motion device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motion device that can reduce a moment load caused by a difference in an installation surface, and also can adjust and maintain the rigidity when a moment load acts.SOLUTION: The motion device 40 includes: at least one or more track bodies 1; a plurality of moving bodies 2 movable on the track body 1; a mounting body 3 spaced apart from a placement surface 17 of the moving body 2; an elastic body 32 disposed between the moving body 2 and the mounting body 3, and for separating the moving body 2 and the mounting body 3; and a plurality of coupling parts 36 for coupling the moving body 2 and the mounting body 3 such that the relative attitude thereof is variable.

Description

  The present invention relates to an exercise device in which a moving body can reciprocate on a track body along its extending direction.

Conventionally, exercise devices such as linear motion guides have been used in precision processing devices in the semiconductor field, for example, and in recent years, they have been used in a wide variety of fields.
As the exercise apparatus is used for multiple purposes, the following problems have arisen.

In other words, for example, there are irregularities in the place where the track body is installed, the rigidity of the installation device is not secured, or displacement occurs due to the temperature change of the installation location, and there is an error in the installation and operation of the exercise device. It sometimes occurred.
In addition, this type of motion apparatus includes a plurality of moving bodies that are separated from each other in the extending direction of the track body on one track body, and each of the plurality of track bodies in parallel includes a moving body. Since each moving body is connected to a target object such as a table that moves each other, the above-mentioned error causes a force to be applied to each other and smooth operation cannot be performed. Could break down.

  For example, an exercise device shown in Patent Literature 1 below includes a track rail (track body), a block (movable body) movable on the track rail, and an upper plate (mounting body) connected to the block. I have. And in order to cope with the above-mentioned subject, the disc spring is arrange | positioned between a block and an upper plate, and the height of an up-down direction is adjusted.

Japanese Utility Model Publication No.54-21817

  However, the conventional exercise device cannot absorb machining errors in the pitching direction and the rolling direction. Specifically, in the use in which a plurality of moving bodies are provided as described above, it is required that moment loads in all directions can be applied so that these moving bodies do not exert forces on each other.

  The present invention has been made in view of such circumstances, and can reduce a moment load (acting on a moving body) caused by an error of a mounting surface (a place where a track body is installed), and the moment load can be reduced. An object of the present invention is to provide an exercise device capable of adjusting and maintaining rigidity when a load is applied.

In order to achieve the above object, the present invention proposes the following means.
The exercise device according to the present invention includes at least one or more track bodies, a plurality of mobile bodies that are movable on the track bodies, an attachment body that is disposed apart from a mounting surface of the mobile bodies, An elastic body that is disposed between the moving body and the mounting body and separates the moving body and the mounting body; and a plurality of connecting portions that connect the movable body and the mounting body in a changeable relative posture. It is characterized by providing.

  According to the exercise device of the present invention, the moment load caused by the error of the mounting surface can be reduced, and the rigidity can be adjusted and maintained when the moment load is applied.

It is a disassembled perspective view of the exercise device which concerns on 1st Embodiment of this invention, and is a figure which shows the principal part in a cross section. It is a front view of the exercise device of FIG. 1, and is a figure which shows a principal part in cross section. It is sectional drawing which expands and shows the support part vicinity of the exercise device of FIG. It is sectional drawing which shows the modification of the support part of the exercise device of FIG. It is a partial see-through perspective view showing an exercise device concerning a 2nd embodiment of the present invention. FIG. 6 is a front sectional view of the exercise device of FIG. 5. It is a disassembled perspective view of the exercise device which concerns on 3rd Embodiment of this invention, and is a figure which shows the principal part in a cross section. FIG. 8 is a front sectional view for explaining a main part of the exercise device of FIG. 7. It is a figure which shows the principal part of the exercise device which concerns on 4th Embodiment of this invention in a cross section. It is sectional drawing which shows the modification of the support part of the exercise device of FIG. It is a figure which shows the principal part of the exercise apparatus which concerns on 5th Embodiment of this invention in a cross section. It is a side view explaining the Example and comparative example of this invention. It is a top view explaining the Example and comparative example (MA direction rolling resistance confirmation test) of this invention. It is a top view explaining the Example and comparative example (MC direction rolling resistance confirmation test) of this invention. It is a graph explaining the Example and comparative example (MA direction rolling resistance confirmation test) of this invention. It is a graph explaining the Example and comparative example (MC direction rolling resistance confirmation test) of this invention. It is a permeation | transmission perspective view explaining the Example (endurance confirmation test) of this invention. It is a permeation | transmission perspective view explaining a comparative example (endurance confirmation test). It is a figure explaining the Example (load distribution simulation) of this invention. It is a figure explaining a comparative example (load distribution simulation).

(First embodiment)
Hereinafter, the linear motion guide 40 which is 1st Embodiment of the exercise device which concerns on this invention is demonstrated with reference to FIGS.
As shown in FIGS. 1 and 2, the linear motion guide 40 includes at least one or more track rails (track bodies) 1 and a plurality of blocks (movable on the track rails 1 along the extending direction) ( (Moving body) 2 and an upper plate (attachment body) 3 connected to the block 2.
A plurality of blocks 2 are provided on one track rail 1 so as to be spaced apart from each other in the extending direction of the track rail 1, provided on each of the plurality of parallel track rails 1, or a combination thereof. It is done. 1 and 2, one track rail 1 and one block 2 are shown.

In the following description, the direction in which the track rail 1, the block 2, and the upper plate 3 overlap each other is referred to as a height direction H (the vertical direction in FIG. 2). The rail 1 side is called the lower side. Of the surface directions perpendicular to the height direction H, the direction in which the track rail 1 extends is referred to as a length direction L, and the direction perpendicular to the length direction L is referred to as a width direction W (left-right direction in FIG. 2). say.
In the present embodiment, the height direction H is the vertical direction, and the surface direction perpendicular to the height direction H is the horizontal plane direction.

  In FIG. 2, the track rail 1 has a substantially rectangular cross section perpendicular to the length direction L. Of the outer surface of the track rail 1, the upper surface 4 facing the upper side in the height direction H and the lower surface 5 facing the lower side are flat surfaces that are not ground (that is, flat surfaces that have not been finished). Moreover, the center part of the height direction H of the pair of side surfaces 6 facing the width direction W among the outer surfaces of the track rail 1 is recessed from the upper part and the lower part. A plurality of grooved rolling element rolling surfaces 7 extending along the length direction L are formed in the upper portion of the side surface 6.

  A plurality of through-holes 8 extending in the height direction H and opening in the upper surface 4 and the lower surface 5 are formed in the track rail 1 at intervals in the length direction L. The through hole 8 is used when the track rail 1 is attached to a base portion (not shown) where the linear motion guide 40 is installed, and a bolt or the like is inserted at the time of installation. In addition, by installing the track rail 1 on the base portion, the lower surface 5 of the track rail 1 comes into contact with the mounting surface of the base portion, so that the lower surface 5 becomes the installation surface of the track rail 1.

The block 2 includes a rectangular parallelepiped block main body 9 and a pair of flat end plates 11 disposed so as to sandwich the block main body 9 from both sides in the length direction L.
In FIG. 2, the block body 9 has a C-shape or a U-shape in which a cross section perpendicular to the length direction L opens downward, extends in the length direction L, and extends downward. The upper part of the track rail 1 can be accommodated in the recessed part 12 having a groove shape that is open.

As shown in FIG. 4, a plurality of load rolling element rolling surfaces 13 extending along the length direction L are formed in the recess 12 of the block 2 so as to face the rolling element rolling surface 7 of the track rail 1. ing.
Further, a space (a chamber extending in the length direction L) formed by the rolling element rolling surface 7 of the track rail 1 and the loaded rolling element rolling surface 13 disposed to face the rolling element rolling surface 7. However, the load rolling element rolling path 14 is formed.
Further, a gap is formed between the back surface 16 facing downward in the recess 12 and the upper surface 4 of the track rail 1. Further, a gap is also formed between the inner side surface 37 facing the width direction W in the recess 12 and the side surface 6 of the track rail 1.

  Further, the loaded rolling element rolling path 14 is an endless elliptical ring or an elliptical annular path formed in the block 2 and is one linear part of a pair of linear parts extending in the length direction L. Is forming. The other linear part in the infinite circulation path is a rolling element return path. In addition, the semicircular arc-shaped curved portion connecting the ends of the pair of linear portions in the infinite circulation path is a rolling element direction changing path, and the rolling element direction changing path is the length of the infinite circulation path. A pair is formed at both ends in the length direction L. In FIG. 4, illustrations other than the load rolling element rolling path 14 in the infinite circulation path are omitted.

  Of the endless circulation path formed in the block 2, the load rolling element rolling path 14 and the rolling element return path are formed in portions corresponding to the block body 9. Further, the rolling element direction changing path is formed at a portion corresponding to the end plate 11.

  A plurality of balls (rolling elements) 15 that roll (roll) between the block 2 and the track rail 1 are held in the endless circulation path of the block 2. These balls 15 are arranged in the endless circulation path configured as described above with almost no gap, and can circulate in the path. The block 2 is connected to the track rail 1 through these balls 15, and the block 2 can reciprocate on the track rail 1 by rolling and circulation of the balls 15.

  In FIG. 1, the upper surface (mounting surface) 17 of the block 2 has a rectangular shape, and the central portion in the width direction W is a recess 18 that is recessed by one step from both ends. Moreover, the said both ends in the upper surface 17 become a grinding-less plane. In FIG. 2, four screw holes 19 are formed at both ends of the upper surface 17 so as to be positioned at the four corners of the upper surface 17. It should be noted that the screw holes 19 need only be provided at four locations on the upper surface 17 and may not be disposed at the four corners of the upper surface 17.

  In addition, a pair of wall portions 38 are formed at both end portions in the width direction W of the concave portion 18 of the upper surface 17. The wall 38 is formed so as to be gradually inclined upward as it goes outward from the center of the recess 18 along the width direction W.

  The upper plate 3 includes a rectangular plate-shaped plate main body 23, a belt-plate-shaped side surface portion (attachment body side surface portion) 24 that extends from the both end portions in the width direction W of the plate main body 23 and extends along the length direction L. It is equipped with.

  The plate body 23 is disposed above the block 2 so as to be separated from the upper surface 17 of the block 2. Between the lower surface 25 of the plate body 23 and the upper surface 17 of the block 2, a later-described collar 41 and A space for disposing the disc spring 32 is formed. In the plate body 23, multi-stage through holes 27 that extend in the height direction H and open to the upper surface 26 and the lower surface 25 are formed at positions corresponding to the screw holes 19 of the block 2. The through hole 27 has a large-diameter portion that opens to the upper surface 26 of the plate body 23, a small-diameter portion that opens to the lower surface 25 of the plate body 23, and an annular shape that is located between these large-diameter portion and small-diameter portion and faces upward. And a step portion.

  Bolts (connection portions) 36 are respectively inserted into the four through holes 27 of the plate body 23. The bolt 36 includes, for example, a large-diameter head portion in which screwing means such as a hexagonal hole is formed, and a small-diameter neck portion whose outer periphery is processed with a male screw. The bolt 36 penetrates the upper plate 3 and is fitted into the screw hole 19 of the block 2 by a screw action, whereby the upper plate 3 and the block 2 are connected.

  Specifically, the head portion of the bolt 36 is accommodated in the large diameter portion of the through hole 27 and abuts against the step portion of the through hole 27 from above. The neck portion of the bolt 36 is inserted into the small diameter portion of the through hole 27, and the tip end portion (lower end portion) is screwed into the screw hole 19. These bolts 36 are arranged at four locations on the upper surface 17 of the block 2, and the relative posture between the block 2 and the upper plate 3 can be changed by adjusting the screwing amount (tightening amount) into the screw hole 19. These are connected.

  A cylindrical collar 45 is inserted into the small diameter portion of the through hole 27 of the plate body 23. The collar 45 has a neck portion (small-diameter portion where a screw is formed) of the bolt 36 inserted therein, and a lower portion of the collar 45 is inserted into the disc spring 32. Further, the lower end surface of the collar 45 is in contact with the upper surface 17 of the block 2, and the upper end surface of the collar 45 is in contact with the lower end surface of the head portion (large diameter portion) of the bolt 36. That is, the bolt 36, the collar 45 and the disc spring 32 are arranged coaxially with each other so as to be a common axis with the screw hole 19, and the bolt 36 and the collar 45 are arranged through the disc spring 32.

  The collar 45 is defined so that the screwing amount of the bolt 36 into the screw hole 19 is not more than a predetermined value (predetermined range), and the state shown in FIG. 2 (the head portion of the bolt 36 abuts on the upper end surface of the collar 45). In the state where the lower end surface of the collar 45 is in contact with the upper surface 17), the bolt 36 is restricted from being screwed further into the screw hole 19. Such a collar 45 prevents the upper plate 3 from coming too close to the block 2 when the bolt 36 is tightened during manufacturing or maintenance, and the amount of tightening of the bolt 36 is simple. It has come to be specified in.

  The collar 45 regulates the tightening amount of the bolt 36 so that the distance between the upper surface 17 of the block 2 and the lower surface 25 of the upper plate 3 is within a predetermined range, while the relative relationship between the upper surface 17 and the lower surface 25 is relatively small. It does not regulate approach and separation. The relative approach between the upper surface 17 of the block 2 and the lower surface 25 of the upper plate 3 is regulated by a disc spring (elastic body) 32 and a collar (supporting portion) 41, which will be described later, and the upper surface 17 of the block 2 and the upper plate. 3 is regulated by a bolt 36. That is, the plurality of bolts 36 define the maximum distance between the block 2 and the upper plate 3.

In FIG. 1, a plurality of mounting holes 29 extending in the height direction H and opening at least on the upper surface 26 are formed in the plate body 23. In the illustrated example, a total of four attachment holes 29 are formed so as to be located on both outer sides in the length direction L of the through holes 27 in the plate main body 23. Bolts or the like are inserted into the mounting holes 29, and a target member (object) such as a table to be moved on the upper surface 26 of the plate body 23 is placed.
The linear guide 40 guides and conveys the target member along the track rail 1 as the upper plate 3 and the block 2 supporting the upper plate 3 reciprocate on the track rail 1.

  In FIG. 2, the side surface portion 24 of the upper plate 3 is formed so as to cover the side surface 21 portion of the block 2 from the width direction W. Specifically, the side surface portion 24 is disposed so as to face the upper end portion of the side surface 21.

  2 and 4, a gap C that allows the block 2 and the upper plate 3 to swing within a predetermined range is provided between the side surface 21 portion (the upper end portion of the side surface 21) and the side surface portion 24. Is formed. The gap C is set to allow the rocking in the rolling direction and the yawing direction among the rocking. In the present embodiment, the width dimension (outer dimension in the width direction W) of the upper plate 3 is about 50 mm, while the gap C is about 0.5 mm.

  Between the block 2 and the upper plate 3, a collar (supporting portion) 41 and a disc spring (elastic body) 32 for separating the block 2 and the upper plate 3 are disposed. Specifically, the collar 41 is disposed between the upper surface 17 and the lower surface 25 so as to restrict the upper surface 17 of the block 2 and the lower surface 25 of the upper plate 3 from approaching a predetermined distance or less. The collar 41 is directed to either the block 2 or the upper plate 3 in the height direction H (in the present embodiment, downward) so as to support the relative posture of the block 2 and the upper plate 3 in a changeable manner. ) Protrusively formed.

  In the example of FIG. 2, the collar 41 is provided integrally with the upper plate 3, and in the example of FIG. 4, the collar 41 is provided separately from the upper plate 3. Specifically, in the collar 41, a surface (tip surface) facing one of the height directions H in which the block 2 and the upper plate 3 face each other has a protruding shape (convex shape) and the block 2 and the upper plate 3. It can contact either one.

  As shown in FIGS. 2 and 3, the plate main body 23 of the upper plate 3 is integrally formed with a columnar collar 41 protruding downward from the lower surface 25. The collar 41 and the upper plate 3 are integrally manufactured by cold forging, for example. The lower surface 42 (the surface facing one side) 42 of the collar 41 has a protruding shape and can contact the concave portion 18 of the upper surface 17 of the block 2 with a gap G.

In FIG. 3, the lower surface 42 of the collar 41 includes a seating surface 42 a made up of a circular plane opposed to and substantially parallel to the recess 18 of the upper surface 17, and a taper formed in an annular shape so as to surround the seating surface 42 a. And a surface 42b. The cross-sectional shape of the taper surface 42b is gradually inclined upward as the distance from the seat surface 42a in the width direction W increases.
The gap G between the seating surface 42a and the recess 18 is set to a size within a predetermined range in which the seating surface 42a and the recess 18 can come into contact with each other as the disc spring (elastic body) 32 is elastically deformed. .

  1 and 2, a plurality of disc springs 32 are arranged around the collar 41 around the collar 41. The disc spring 32 is disposed between the block 2 and the upper plate 3 to separate the block 2 from the upper plate 3. The disc springs 32 are arranged at four locations on the upper surface 17 corresponding to the positions of the screw holes 19 of the block 2, and a plurality of disc springs 32 are stacked in the height direction H on each screw hole 19. .

  Specifically, the disc spring 32 has an annular plate shape, and the position of the outer peripheral edge portion and the position of the inner peripheral edge portion are shifted in the height direction H (the central axis direction of the disc spring 32). And is elastically deformable in the height direction H. And the disc springs 32 adjacent to each other in the height direction H are stacked so as to be staggered in a state where the outer peripheral edge portions and the inner peripheral edge portions are in contact with each other.

Further, the number of disc springs 32 stacked corresponding to the same screw hole 19 is an even number.
As a result, of the stacked disc springs 32, the outer peripheral edge of the uppermost disc spring 32 is brought into contact with the lower surface 25 of the plate body 23, and the outer peripheral portion of the lowermost disc spring 32 is blocked. 2, the abutting range of the bottom surface 25 and the top surface 17 with the disc spring 32 is ensured. The disc spring 32 is penetrated through the collar 45 through the neck of the bolt 36.

  In the illustrated example, four disc springs 32 are disposed in a stacked state with respect to one bolt 36. Of these disc springs 32, the disc spring 32 positioned at the upper end contacts the opening edge of the through hole 27 in the lower surface 25 of the upper plate 3, and the disc spring 32 positioned at the lower end is a screw on the upper surface 17 of the block 2. It is in contact with the opening edge of the hole 19. A preload is applied to these disc springs 32 by screwing bolts 36 into the screw holes 19. When an external force exceeding the preload is applied from above the upper plate 3 toward the block 2, these disc springs 32 are provided with these disc springs. The spring 32 is elastically deformed to allow the upper plate 3 to approach the block 2.

As described above, according to the linear motion guide 40 of the present embodiment, although at least one or more track rails 1 are provided with a plurality of blocks 2 that can move on the track rail 1. The following excellent effects are obtained.
That is, as described in the present embodiment, when the plurality of blocks 2 are connected to an object such as a table and the object is transported integrally along the track rail 1, There may be an error in the installation or operation of the linear motion guide due to unevenness or rigidity of the installation location, temperature change of the installation location, and the like.

  According to the linear motion guide 40 of the present embodiment, since the plurality of bolts 36 are provided to connect the relative posture of the block 2 and the upper plate 3 so as to be changeable, the upper plate 3 of each block 2 is an object such as a table. Even when an attachment error (misalignment) occurs in the state of being connected to an object, the attachment error can be easily eliminated by adjusting the screwing amounts of these bolts 36, respectively. Specifically, from the state where the head portion of the bolt 36 is in contact with the upper end surface of the collar 45 (tightened state), the screws are tightened so that the screwing amount of each bolt 36 into the screw hole 19 is shallow as necessary. Loosen.

  Thereby, the upper plate 3 can be easily aligned with the block 2 in the pitching direction and the rolling direction. Further, the distance between the block 2 and the upper plate 3 can be easily changed by separating the upper plate 3 from the block 2 or changing the height of the collar 45 to bring the upper plate 3 closer to the block 2.

  Further, since a plurality of disc springs 32 for separating the block 2 and the upper plate 3 are disposed between the block 2 and the upper plate 3, even if an error occurs in the operation of the linear guide 40, The disc spring 32 is elastically deformed so that the upper plate 3 and the block 2 are relatively swung, and such an error can be easily absorbed. Therefore, it is possible to effectively remove the load on the apparatus due to the moment load, and it is possible to prevent failure of parts and the like. As described above, when the screwing amount of the bolt 36 is adjusted to be shallow, the disc spring 32 is restored and deformed, so that a sufficient return is ensured (the disc spring 32 is sufficiently elastically deformed in advance). Therefore, it is possible to reliably apply a preload to the disc spring 32 regardless of the adjustment of the bolt 36, which is preferable.

As described above, according to the linear motion guide 40 of the present embodiment, it is possible to load a moment load in all directions such as the pitching direction and the rolling direction while ensuring sufficient rigidity as a device, and to sufficiently prevent errors. Absorbing, smooth and stable operation is ensured, and it is possible to expect an extension of the device life.
The moment load caused by the error of the mounting surface (where the track rail 1 is installed) (acting on the block 2) can be relaxed, and the rigidity can be adjusted and maintained when the moment load is applied.

  In addition, since the bolts 36 are arranged at four locations on the upper surface 17 of the block 2, the alignment in the pitching direction and the rolling direction described above can be easily performed with high accuracy. That is, for example, when there are two bolts 36 as in the prior art, only one of the pitching direction and the rolling direction can be aligned. Is difficult. On the other hand, if the bolts 36 are arranged in four places as in the present embodiment, alignment in any direction can be easily performed with high accuracy. If the number of bolts 36 is five or more, the adjustment work becomes complicated and the manufacturing cost increases.

  Further, since the disc spring 32 is disposed through the bolt 36 that connects the upper plate 3 and the block 2, the disc spring 32 has a height direction H in which the upper plate 3 and the block 2 face each other. It is possible to prevent a large movement in the horizontal plane direction intersecting with. That is, according to this configuration, the position of the disc spring 32 can be stabilized at a predetermined position by using the bolt 36 for connecting the upper plate 3 and the block 2, so that the increase in the number of parts can be suppressed. On the other hand, the effect of the disc spring 32 can be stably obtained over a long period of time.

  Further, a collar 41 that supports the relative posture of the block 2 and the upper plate 3 so as to be changeable is provided, and the upper plate 3 is disposed on the block 2 so as to be supported by the collar 41. In addition, a surface (lower surface 42) facing one side of the collar 41 has a protruding shape and can come into contact with the block 2. As a result, the following effects are obtained.

  In other words, the lower surface 42 of the collar 41 abuts against the concave portion 18 of the block 2 when an external force exceeding a predetermined value is applied to the upper plate 3 toward the block 2 while the above-described effects are achieved by the bolt 36 and the disc spring 32. Thus, it is possible to prevent the upper plate 3 and the block 2 from being too close to each other. Further, when the collar 41 abuts against the block 2, the collar 41 receives an external force, and an excessive force is suppressed from being applied to the disc spring 32. Therefore, the performance of the disc spring 32 is stably maintained over a long period. Further, the upper plate 3 can swing with respect to the block 2 around the collar 41 in a state where the collar 41 is in contact with the block 2.

  As a result, the upper plate 3 can swing in the pitching direction and the rolling direction with respect to the block 2. For example, the place (base portion) where the track rail 1 is installed has irregularities and the rigidity is not secured. Even if there is an error in the mounting or operation of the linear motion guide 40 due to a displacement due to a temperature change, such an error is caused by the relative oscillation between the upper plate 3 and the block 2. Can be absorbed. Therefore, it is possible to effectively remove the load on the apparatus due to the moment load, and it is possible to prevent failure of parts and the like. In addition, according to the configuration of the present embodiment, since the rigidity with respect to an external force exceeding a predetermined value is ensured while applying a moment load in all directions, the above-described effect is ensured and stable over a long period of time. It is obtained.

  Further, a disc spring 32 is disposed around the collar 41 between the block 2 and the upper plate 3. As a result, the collar 41 receives a central load in the horizontal direction so that the distance between the block 2 and the upper plate 3 is secured, and the load around the collar 41 is distributed so that the disc spring 32 distributes the load of the collar 41. Therefore, it is possible to secure the rigidity of the apparatus by minimizing the above-mentioned swinging, and to suppress rattling during operation. Therefore, the block 2 can move smoothly and stably on the track rail 1.

Specifically, the linear motion guide 40 ensures rigidity by applying a radial load with a collar 41 at the center of the plate body 23. The moment load in the pitching direction and the rolling direction is ensured by applying a load with the side portion 24 of the upper plate 3 or the head portion of the bolt 36 tightening the collar 45 as a support point. Further, with respect to the horizontal load and the moment load in the yawing direction, rigidity is ensured by applying a load on the side surface portion 24 of the upper plate 3.
And since the structure is simple while the rigidity is sufficiently ensured in this way, the manufacturing cost can be reduced.

  Further, since the collar 41 is located at the center in the horizontal plane direction between the block 2 and the upper plate 3, the moment load can be applied at the center of the block 2 (center in the horizontal plane direction). Accordingly, when an unbalanced load (moment load) is applied to the upper plate 3, it is prevented that an unbalanced load is applied to the track rail 1 via the block 2, and relative movement between the block 2 and the track rail 1 is prevented. Highly stable and stable.

Further, since the gap G is provided between the lower surface 42 of the collar 41 and the concave portion 18 of the upper surface 17 of the block 2, it is easier to absorb errors.
In addition, since the seating surface 42a of the lower surface 42 is formed so as to be in surface contact with the recess 18, the moment load becomes stronger and the rigidity is improved.

  Further, since the disc spring 32 is used as the elastic body, a large spring constant can be ensured even when the space between the block 2 and the upper plate 3 is small. Therefore, the rigidity of the apparatus can be reliably increased.

  In addition, since a plurality of disc springs 32 are stacked, the balance between rigidity and error absorption can be easily adjusted. In the present embodiment, the configuration in which the disc springs 32 are stacked can absorb a large error of, for example, about 0.2 mm to 0.3 mm in the height direction H, while ensuring sufficient rigidity.

  The number of disc springs 32 stacked at the same location (on the same screw hole 19) on the upper surface 17 of the block 2 is an even number, and the uppermost of the stacked disc springs 32 is the uppermost. The outer peripheral edge portion of the disc spring 32 positioned is in contact with the lower surface 25 of the plate body 23, and the outer peripheral edge portion of the disc spring 32 positioned in the lowermost position is in contact with the upper surface 17 of the block 2. And the disc spring 32 are secured in a wide contact range. Accordingly, the disc spring 32 is likely to receive a force between the upper plate 3 and the block 2, and the above-described effects can be more reliably obtained.

Moreover, in the structure which the track rail 1 and the block 2 move relatively via the ball | bowl 15 like this embodiment, conventionally, the ball | bowl 15, the rolling-element rolling surface 7, and the load rolling-element rolling surface 13 ( In order to prevent damage to the loaded rolling element rolling path 14) and the like, it is necessary to keep the mounting error as small as possible, at most about several tens of μm. Therefore, the installation surface (lower surface) facing the side opposite to the block 2 of the track rail 1 5) had to be finished. On the other hand, according to the linear motion guide 40 of the present embodiment, the error can be sufficiently absorbed as described above, so that it is not necessary to finish the installation surface of the track rail 1. Therefore, manufacture of the track rail 1 is simple and an effect of cost reduction can be obtained.
Similarly, finishing can be omitted for the upper surface 17 of the block 2, the lower surface 25 and the upper surface 26 of the upper plate 3.

  Further, since a large error can be absorbed as described above, a user using the linear motion guide 40 can easily place the target member (object such as a table) on the upper surface 26 of the upper plate 3 without special adjustment. Can be attached to.

  Further, the upper plate 3 is formed with a side surface portion 24 so as to cover the side surface 21 portion of the block 2, and between the side surface 21 portion and the side surface portion 24, a relative predetermined relationship between the block 2 and the upper plate 3 is formed. Since the gap C that allows the swing of the range is formed, the following effects are obtained.

  In other words, when the relative swing between the block 2 and the upper plate 3 (especially in the rolling direction or yawing direction) is within a predetermined range, this swing is absorbed in the gap C and allowed. On the other hand, when the swing exceeds a predetermined range, the side surface portion 24 of the upper plate 3 comes into contact with the side surface 21 of the block 2 to restrict further swing. Thus, a large load in the rolling direction and the yawing direction can be applied by the contact between the high rigidity block 2 and the upper plate 3 in addition to the collar 41 and the elastic portion. Therefore, the rigidity of the apparatus is improved, and the performance is stably maintained with high accuracy.

  Further, since the plurality of bolts 36 define the maximum distance between the block 2 and the upper plate 3, it is possible to reliably apply a preload to the disc spring 32 and to the block 2 with respect to the upper plate 3. An error can be absorbed by elastically deforming the disc spring 32 when an external force exceeding a predetermined level is applied. Therefore, the linear motion guide 40 is stable in operation by suppressing the rattling during operation and accurately absorbing errors.

  Further, since the collar 45 that regulates the tightening amount of the bolt 36 is provided, when the bolt 36 is tightened, the distance between the upper surface 17 of the block 2 and the lower surface 25 of the upper plate 3 is easily within a predetermined range. Can be adjusted.

Here, a modification of the collar 41 of the linear motion guide 40 will be described with reference to FIG.
In the example shown in FIG. 4, the plate body 23 of the upper plate 3 is formed with a protrusion 39 that protrudes downward from the lower surface 25. Further, the central portion of the upper surface 17 of the block 2 in the width direction W is a flat surface that does not have the concave portion 18 described above.

  Further, the block 2 and the upper plate 3 are separated from each other so as to support the relative posture of the block 2 and the upper plate 3 so as to be changeable. A disc-shaped collar 41 is provided. Of the two surfaces facing the height direction H of the collar 41, the lower surface (surface facing one side) 42 is hemispherical (projecting shape) and is in contact with (can be contacted with) the upper surface 17 of the block 2. ing. In addition, the said hemisphere said here does not mean only the shape of the hemisphere which divided the spherical surface into two equal parts, for example, a convex curved surface shape with a small curvature formed by cutting off a part of the spherical surface, The concept includes a bulging surface shape having a gentle gradient. In the illustrated example, the hemispherical lower surface 42 is a convex curved surface having a circular shape in a bottom view and having a small curvature formed by cutting out a part of the spherical surface.

  Of the two surfaces facing the height direction H of the collar 41, the upper surface (the surface facing the other) 43 is an annular flat surface and is in contact with the lower surface 25 of the plate body 23. A circular hole 44 is formed in the center of the upper surface 43 of the collar 41 in the horizontal plane direction, and a protrusion 39 is fitted in the circular hole 44.

According to this modification, the hemispherical lower surface 42 of the collar 41 acts so as to roll on the upper surface 17 of the block 2 so that the upper plate 3 can swing with respect to the block 2. Therefore, the same effect as described above can be obtained.
Further, since the block 2 where the load rolling element rolling surface 13 of the infinite circulation path is formed is subjected to quenching processing, the lower surface 42 of the collar 41 is made hemispherical in this way and makes point contact. Thus, even when it contacts the upper surface 17 of the block 2, the upper surface 17 is difficult to be deformed by a load. Therefore, the effect by the above-mentioned oscillation can be obtained stably over a long period of time.

(Second Embodiment)
Next, the linear motion guide 50 which is 2nd Embodiment of the exercise device which concerns on this invention is demonstrated with reference to FIG.5 and FIG.6. In addition, the same code | symbol is attached | subjected to the same member as above-mentioned embodiment, and the description is abbreviate | omitted.

  The linear motion guide 50 of the present embodiment is different from the linear motion guide 40 described above mainly in the following points.

A plurality of set screw holes 22 that open to the side surface 21 and communicate with the screw hole 19 are formed on the side surface 21 facing the width direction W of the block 2. A set screw (not shown) is disposed in the set screw hole 22 and accommodated. The female screw prevents the bolt 36 from loosening because its tip abuts against the neck of the bolt 36.
The upper end portion of the side surface 21 of the block 2 and the set screw hole 22 opened to the upper end portion are covered with the side surface portion 24 of the upper plate 3.

  Further, the collar 45 is not provided in the through hole 27 of the upper plate 3, and the bolt 36 is tightened so that the distance between the upper surface 17 of the block 2 and the lower surface 25 of the upper plate 3 falls within a predetermined range. After that, it is fixed by the action of the imine screw.

  In addition, a pin insertion hole 28 that extends in the height direction H and opens to the upper surface 26 and the lower surface 25 is formed in the plate body 23 in the center of the plate body 23 in the horizontal plane direction. Specifically, the pin insertion hole 28 is formed at a position corresponding to the center in the width direction W and the length direction L on the upper surface 17 of the block 2.

  A cylindrical pin 30 having a predetermined rigidity and elastically deformable is fitted in the pin insertion hole 28. The lower end portion of the pin 30 protrudes from the lower surface 25 of the plate body 23.

  In this embodiment, between the block 2 and the upper plate 3, instead of the collar 41 described above, one of the height directions H in which the block 2 and the upper plate 3 face each other (in this embodiment, the lower side) A collar (supporting portion) 31 having a shape projecting toward) is provided. Specifically, in the collar 31, a surface (lower surface 35) that faces one side in the height direction H forms a protruding shape and can contact the block 2. Like the collar 41 described above, the collar 31 is spaced apart so as to support the relative posture of the block 2 and the upper plate 3 so as to be changeable.

  The collar 31 has a disk shape, and its outer diameter is set slightly smaller than the width of the recess 18. The collar 31 is arranged coaxially with the pin insertion hole 28 at the center in the horizontal plane direction on the lower surface 25 of the upper plate 3. The lower end portion of the outer peripheral surface of the collar 31 is disposed close to the wall portion 38 of the recess 18.

In the present embodiment, of the both surfaces of the collar 31 facing the height direction H, the lower surface 35 is hemispherical and is in contact with the upper surface 17 of the block 2. In the illustrated example, the hemispherical lower surface 35 is a circular convex curved surface having a small curvature and formed so as to cut out a part of a spherical surface.
Of the two surfaces facing the height direction H of the collar 31, the upper surface 34 is an annular flat surface and is in contact with the lower surface 25 of the plate body 23.

  Further, a pin mounting hole 33 is formed in the center of the collar 31 in the horizontal plane direction, the central axis extending in the height direction H and opening in the upper surface 34. The pin 30 is fitted in the pin mounting hole 33, and the collar 31 is integrated with the upper plate 3 through the pin 30.

  Also in the linear motion guide 50 of this embodiment, there exists an effect similar to the linear motion guide 40 mentioned above.

  Further, since the collar 31 is integrated with the upper plate 3 via the pin 30, the position of the collar 31 between the block 2 and the upper plate 3 is accurately determined at the center in the horizontal plane direction. Therefore, the above-described effect can be obtained with high accuracy.

In addition, the alignment mechanism can be manufactured inexpensively and easily by the collar 31, the elastic body (the disc spring 32), and the pin 30.
Although not particularly illustrated, the pin mounting hole 33 of the collar 31 may be formed through the collar 31 in the height direction H. In this case, the lower end opening edge of the pin mounting hole 33 in the lower surface 35 of the collar 31 and the upper surface 17 of the block 2 come into contact with each other so as to make a line contact in an annular shape. The collar 31 is easily dispersed in the circumferential direction, and deformation and breakage of the collar 31 are prevented.

(Third embodiment)
Next, a linear motion guide 60 that is a third embodiment of the exercise device according to the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same member as above-mentioned embodiment, and the description is abbreviate | omitted.

  The linear motion guide 60 of the present embodiment is different from the linear motion guides 40 and 50 described above mainly in the following points.

  The linear motion guide 60 does not have the collars 41 and 31 and the collar 45 of the bolt 36 which are the support portions described in the above embodiment.

Also in the linear motion guide 60 of this embodiment, there exists an effect similar to the linear motion guides 40 and 50 mentioned above.
Further, according to the linear motion guide 60, the adjustment range of the screwing amount of the bolt 36 with respect to the screw hole 19 can be increased, and the change range of the relative posture between the upper plate 3 and the block 2 can be increased. The above mounting error can be absorbed more reliably. Further, even during operation, the upper plate 3 can be moved largely with respect to the block 2 without being restricted by the support portion, so that errors during operation can be reliably absorbed.

(Fourth embodiment)
Next, a linear motion guide 80 which is a fourth embodiment of the exercise device according to the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same member as above-mentioned embodiment, and the description is abbreviate | omitted.

  The linear motion guide 80 of the present embodiment is different from the linear motion guides 40, 50, 60 described above mainly in the following points.

In the linear motion guide 80, the disc spring 32 described in the above-described embodiment is penetrated not by the bolt 36 but by a pin (supporting portion) 81.
A hardened material such as S45C is used for the pin 81. A pin hole 83 is formed in the plate body 23 of the upper plate 3 from the lower surface 25 to the upper side, and the pin 81 is fitted and disposed in the pin hole 83. The lower surface 82 of the pin 81 is formed in a hemispherical shape and protrudes below the plate body 23.
On the other hand, a hemispherical hole 84 is formed in the recess 18 of the upper surface 17 of the block 2 that contacts the lower surface 82 of the pin 81. That is, the pin 81 is supported on the upper surface 17 of the block 2 by the spherical bearing (the lower surface 82, the hole portion 84).
As a result, the linear motion guide 80 can smoothly change the relative posture of the block 2 and the upper plate 3 even when a heavy load is applied to the upper plate 3 due to a heavy load being connected to the upper plate 3.

  Further, the linear motion guide 80 does not have the side surface portion 24 of the upper plate 3. If the four bolts 36 can support a horizontal load and a moment load in the yawing direction, the side surface 24 of the upper plate 3 can be omitted.

Here, with reference to FIG. 10, the modification of the support part of the linear guide 80 is demonstrated.
In the example shown in FIG. 10, a hexagon socket button bolt 85 is used as the support portion. That is, the button-shaped head portion of the hexagon socket button bolt 85 serves as a support portion. And it becomes possible to aim at cost reduction by using the button bolt 85 with a hexagon socket. In this case, the recess 18 on the upper surface 17 may be flat.
Moreover, in this embodiment, although the hexagon socket button bolt 85 is used as a support part, you may change into the other member which exhibits the function equivalent to this.

Also in the linear motion guide 80 of this embodiment, there exists an effect similar to the linear motion guides 40, 50, and 60 mentioned above.
Further, according to the linear motion guide 80, even if a heavy load is applied to the upper plate 3 due to a heavy load connected thereto, the relative posture between the block 2 and the upper plate 3 can be changed smoothly. . Further, by omitting the side surface portion 24 of the upper plate 3 or using the hexagon socket button bolt 85 as a support portion, the cost can be reduced while maintaining the performance.

(Fifth embodiment)
Next, a linear motion guide 90 which is a fifth embodiment of the exercise device according to the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same member as above-mentioned embodiment, and the description is abbreviate | omitted.

  The linear motion guide 90 of this embodiment is different from the linear motion guides 40, 50, 60, 80 described above mainly in the following points.

The linear motion guide 90 is installed on the wall surface.
That is, the height direction in which the track rail 1, the block 2, and the upper plate 3 overlap each other is the horizontal plane direction W (the left-right direction in FIG. 11).
Moreover, the width direction of the track rail 1, the block 2, and the upper plate 3 is a vertical direction H (up and down direction in FIG. 11).
The direction in which the track rail 1 extends remains in the length direction L.

In the linear motion guide 90, the upper plate 3 has a vertical load support portion 91 that abuts on the upper side surface 21 of the block body 9 in order to support the vertical load when the wall surface is arranged on the block 2. .
The vertical load support portion 91 includes an upper surface portion 92 and hexagon socket button bolts 93 disposed on the lower surface of the upper surface portion 92.
The upper surface portion 92 is formed so as to face the upper side surface 21 of the block body 9 from the upper end of the upper plate 3. A gap is formed between the upper surface portion 92 and the side surface 21 of the block body 9. The button-shaped head portion of the hexagon socket button bolt 93 attached to the lower surface of the upper surface portion 92 contacts the upper side surface 21 of the block body 9.
Thus, in the linear motion guide 90, by providing the vertical load support portion 91, the weight of the upper plate 3 and the vertical component of the load applied to the upper plate 3 are directly supported by the block body 9. Thereby, even if the linear motion guide 90 is installed on the wall surface, the relative posture of the block 2 and the upper plate 3 can be changed.

Also in the linear motion guide 90 of this embodiment, there exists an effect similar to the linear motion guide 40, 50, 60, 80 mentioned above.
In particular, according to this linear motion guide 90, since the upper surface portion 92 and the hexagon socket button bolt 93 are used as the vertical load support portion 91, the wall surface of the linear motion guide 90 can be realized without increasing the cost. .

Note that the wall surface on which the linear motion guide 90 is installed is not limited to a vertical surface, and may be an inclined surface.
Further, the vertical load support portion 91 is not limited to the case where the hexagon socket button bolt 93 is provided. A protrusion may be integrally formed on the lower surface of the upper surface portion 92, and this protrusion may be brought into contact with the side surface 21 of the block body 9. Further, the shape of the upper surface portion 92 is not limited to a flat plate shape, and may be a hook shape or the like.

  The present invention is not limited to the first to fifth embodiments, and various modifications can be made without departing from the spirit of the present invention.

For example, in the above-described embodiment, a total of four screw holes 19 are formed in the four corners of the upper surface 17 of the block 2, and bolts 36 and disc springs 32 are provided corresponding to the positions of the screw holes 19, respectively. However, the number and position of these are not limited. In other words, the disc spring 32 and the bolt 36 may be provided at a plurality of locations on the upper surface 17, and may not be disposed at the four corners of the upper surface 17.
Further, the disc spring 32 and the bolt 36 may not be disposed at the same location. However, it is preferable that the disc spring 32 and the bolt 36 are disposed at the same place and the disc spring 32 is penetrated by the bolt 36, so that the effects described in the above-described embodiment can be obtained.
Further, as in the above-described embodiment, the disc spring 32 and the bolt 36 are provided so as to surround the periphery of the collars 31 and 41, so that the adjustment of the mounting error becomes easy and a moment load in all directions is applied. Since it becomes easy, it is preferable.
Further, the number of mounting holes 29 of the upper plate 3 is not limited to four in the above-described embodiment.

In the above-described embodiment, the disc spring 32 is disposed so as to penetrate the bolt 36 that connects the upper plate 3 and the block 2, but the disc spring 32 may be penetrated by a shaft member other than the bolt 36. I do not care.
That is, the upper plate 3 and the block 2 may be connected to each other by a shaft member (connecting portion) other than the bolt 36. Specifically, for example, in FIG. 6, instead of the bolt 36, a shaft member having a neck portion that is not threaded on the peripheral surface and a head portion that is larger in diameter than the neck portion may be used. Then, with the neck portion (small diameter portion) of the shaft member 36 inserted into the hole in place of the screw hole 19 in the block 2, the driving pin is fitted into the pin hole in place of the screw hole 22, and the tip of the driving pin is attached to the tip of the driving pin You may make it control the movement to the axial direction of the shaft member 36 by making it contact | abut (it bites into) a neck part.

  In the above-described embodiment, the disc spring 32 is used as the elastic body, but the present invention is not limited to this. That is, the elastic body may be any material that is disposed between the block 2 and the upper plate 3 and separates the block 2 and the upper plate 3. For example, a metal material such as an elastic leaf spring other than the disc spring 32 is used. Alternatively, a polymer material such as rubber or rubber may be used. However, it is preferable to use the disc spring 32 as the elastic body because the effects described in the above-described embodiment can be obtained.

  In addition, the collars 31, 41, and 81 are positioned at the center in the horizontal plane direction between the block 2 and the upper plate 3, but the present invention is not limited to this. It may be arranged at the position.

Moreover, although the load rolling-element rolling path 14 demonstrated as forming a part of infinite circulation path in the block 2, it is not limited to this. That is, the load rolling element rolling path 14 may be a part of a so-called finite type circulation path where the ball 15 does not circulate.
Moreover, although demonstrated using the ball | bowl 15 as a rolling element, it is not limited to this, For example, rolling elements, such as a substantially cylindrical roller and a roller, may be sufficient.

  In the above-described embodiment, the linear motion guides 40, 50, 60, 80, and 90 have been described as examples of the exercise device. However, other exercise devices such as a ball spline and a ball screw may be used. . Moreover, the exercise device of the present invention also includes a guide device including a simple slider mechanism that does not include rolling elements.

  In addition, you may combine suitably the component demonstrated in the above-mentioned embodiment and modification of this invention. In addition, the above-described components can be replaced with well-known components without departing from the spirit of the present invention.

  Hereinafter, the present invention will be specifically described by way of examples. However, the present invention is not limited to this embodiment.

[MA (pitching) direction rolling resistance confirmation test]
[Example 1]
As Example 1 of the present invention, the linear motion guide 40 described in the first embodiment was prepared.
Then, as shown in FIG. 12, a pair of blocks 2 are arranged on the track rail 1 of the linear motion guide 40 at intervals in the length direction L. The pitch P between these blocks 2 was 350 mm. A table T, which is a target member to be moved, was fixed on the upper plate 3.

As shown in FIG. 13, a shim S was inserted between the upper plate 3 and the table T. Specifically, the shim S is disposed so that a moment load in the pitching direction is easily applied to the linear motion guide 40.
As shown in FIG. 15, the thickness of the shim S is from 0.0 mm (mounting error: 0.0 / 400, ie, no shim S) to 1.400 mm in total length of the table T. Up to 0 mm (mounting error: 1.0 / 400) was prepared stepwise.

Then, using the load cell LC shown in FIG. 12, the rolling resistance was measured under the conditions of a measurement speed: 5 mm / s and a stroke: 150 mm.
The results are shown in the graph of FIG. The vertical axis of the graph shows the increase rate of the rolling resistance when the shim S is present relative to the reference, with the rolling resistance when the shim S is absent as a reference (× 1).

[Comparative Example 1]
On the other hand, as Comparative Example 1, a conventional linear guide having no collars 41 and 45, a disc spring 32, and an upper plate 3 was prepared. Then, the table T was fixed on the block 2, and the shim S was disposed between the block 2 and the table T. Otherwise, the rolling resistance was measured under the same conditions as in Example 1. The results are shown in the graph of FIG.

[MC (rolling) direction rolling resistance confirmation test]
[Example 2]
Further, as Example 2 of the present invention, as shown in FIG. 14, a shim S is disposed so that a moment load in the rolling direction is easily applied to the linear motion guide 40.
As shown in FIG. 16, the thickness of the shim S is from 0.0 mm (mounting error: 0.0 / 50, ie, no shim S) with respect to the width of 50 mm of the linear guide 40. Up to 1.0 mm (mounting error: 1.0 / 50) was prepared stepwise. Otherwise, the rolling resistance was measured under the same conditions as in Example 1. The results are shown in the graph of FIG.

[Comparative Example 2]
On the other hand, as Comparative Example 2, a conventional linear motion guide having no collars 41 and 45, a disc spring 32, and an upper plate 3 was prepared. Then, the table T was fixed on the block 2, and the shim S was disposed between the block 2 and the table T. Otherwise, the rolling resistance was measured under the same conditions as in Example 2. The results are shown in the graph of FIG.

[Evaluation]
As shown in FIGS. 15 and 16, in Examples 1 and 2, even when the shim S thickness reaches 1.0 mm, the rolling resistance increase magnification is (× 10) or less and is kept sufficiently low. I found out that
As can be seen from this result, according to the linear motion guide 40 of the present embodiment, for example, the place where the track rail 1 is installed is uneven, the rigidity of the installation device is not secured, or the temperature change of the installation place Even if there is an error in the installation or operation due to the displacement caused by, the moment can be loaded in all directions while the rigidity of the device is sufficiently secured, and the error is fully absorbed As a result, smooth and stable operation can be ensured and the life of the apparatus can be extended. That is, the moment load generated by the error of the mounting surface can be relaxed, and the rigidity can be adjusted and maintained when the moment load is applied.

[Endurance confirmation test by moment load in MA direction and MC direction]
[Example 3]
As a third embodiment of the present invention, using the linear motion guide 40 in which a pair of blocks 2 are arranged on the track rail 1 with a space therebetween, the moment load in the MA direction and the moment in the MC direction described in the first and second embodiments are used. The linear motion guide 40 was repeatedly reciprocated in a state where a predetermined amount of load was applied, and the state of the loaded rolling element rolling surface 13 (roughness of the rolling (running) surface) was confirmed. The results are shown in FIG.

[Comparative Example 3]
On the other hand, as Comparative Example 3, a conventional linear motion guide having no collars 41 and 45, a disc spring 32, and an upper plate 3 was prepared. Otherwise, under the same conditions as in Example 3, this linear motion guide was repeatedly reciprocated to confirm the state of the loaded rolling element rolling surface. The results are shown in FIG.

[Evaluation]
In Example 3 shown in FIG. 17, when the traveling distance of the reciprocating movement reaches 1000 km, some roughness of the rolling surface of the loaded rolling element 13 is observed, but damage such as flaking is observed. There wasn't.
On the other hand, in Comparative Example 3 shown in FIG. 18, when the travel distance of the reciprocating movement reached 109 km, many of the loaded rolling element rolling surfaces were rough, and a plurality of flakings were also observed.

[Load distribution simulation by moment load in MA and MC directions]
[Example 4]
As Example 4 of the present invention, using a linear motion guide 40 in which a pair of blocks 2 are spaced apart on a track rail 1, under the same conditions as in Example 3, the rolling elements rolling surface 13 (load rolling A load distribution simulation was performed on each ball 15 arranged on the moving body rolling path 14). The results are shown in FIGS. 19 (a) to 19 (c).
In FIGS. 19B and 19C, the arc-shaped arrow indicates the direction of the moment load. Of the straight arrows, the thick arrow indicates the direction of the external force applied from the table T to the linear guide. The thin arrows indicate the magnitude of the force applied to each member (the ball 15 and the collar 41) by the moment load, the external force, and the like.

[Comparative Example 4]
On the other hand, as Comparative Example 4, a conventional linear motion guide having no collars 41 and 45, a disc spring 32, and an upper plate 3 was prepared. Other than that, a load distribution simulation was performed under the same conditions as in Example 4. The results are shown in FIGS. 20 (a) to (c).
In addition, the meaning of the arrow in FIG.20 (b) (c) is the same as that of FIG.19 (b) (c) mentioned above.

[Evaluation]
As shown in FIGS. 19A to 19C, in Example 4, it can be seen that the load applied to each ball 15 is kept small and a uniform load is applied to the whole.
Further, when the moment load, the external force, or the like becomes large, the load applied to the ball 15 is reduced by receiving the load on the collar 41.
On the other hand, as shown in FIGS. 20 (a) to 20 (c), in Comparative Example 4, the ball 15 receives a large moment load or external force as it is, and a local concentrated load is generated. I understand.

  DESCRIPTION OF SYMBOLS 1 ... Track rail (track body), 2 ... Block (moving body), 3 ... Upper plate (mounting body), 40, 50, 60, 80, 90 ... Linear motion guide (exercise device), 17 ... Upper surface of block ( (Mounting surface), 24 ... side face part, 31, 41, 81 ... pin (support part), 32 ... disc spring (elastic body), 36 ... bolt (connecting part), 91 ... vertical load support part, C ... gap

Claims (8)

At least one orbiting body;
A plurality of movable bodies movable on the track body;
A mounting body disposed apart from the mounting surface of the moving body;
An elastic body disposed between the moving body and the mounting body, and separating the moving body and the mounting body;
A plurality of connecting portions for connecting the movable body and the mounting body in a changeable manner; and
An exercise device comprising:   The exercise device according to claim 1, wherein the plurality of connecting portions are arranged at four locations on the placement surface. A support portion projecting to one of the moving body and the mounting body so as to support the movable body and the mounting body in a changeable relative posture;
The exercise apparatus according to claim 1, further comprising:   The exercise device according to any one of claims 1 to 3, wherein the elastic body is penetrated by the connecting portion.   The exercise device according to any one of claims 1 to 3, wherein the elastic body penetrates the support portion.   The exercise device according to any one of claims 1 to 5, wherein the attachment body includes a side surface portion having a gap that allows rocking within a predetermined range relative to the moving body.   The exercise device according to claim 1, wherein the plurality of connecting portions define a maximum distance between the moving body and the attachment body.   The said attachment body is equipped with the vertical load support part contact | abutted on the upper surface of the said mobile body, in order to support the vertical load at the time of wall-surface arrangement | positioning with the said mobile body. The exercise device according to one item.

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