JP2022099884A - Assembling method of linear motion guide device and assembling device - Google Patents

Abstract

To provide an assembling method of a linear motion guide device which can extremely easily assemble rolling bodies into a rolling body circulation path in a short time by a simple work process, and an assembling device.SOLUTION: A penetration hole 31 for making a face at a side opposite to a slider main body 16 and a direction conversion path 21 communicate with each other, and allowing the passage of rolling bodies 13 is formed at an end cap 17 of a linear motion guide device 1. An assembling method of the linear motion guide device has: an alignment process for aligning the rolling bodies 13 and holding pieces 14 alternately, and accommodating them in a main body 42a; an insertion process for inserting an end face side opening part 41b of an alignment supply device 41 into a penetration hole 31 of the end cap 17; and a moving process for moving the rolling bodies 13 and the holding pieces 14 into a slider 12 via the penetration hole 31. The moving process is a process for pushing out the rolling bodies 13 and the holding pieces 14 by a push member 43 which is inserted into a long hole 41f formed at a side face of the alignment supply device 41 in a longitudinal direction.SELECTED DRAWING: Figure 8

Description

The present invention relates to an assembly method and an assembly device of a linear motion guide device used in a machine tool or the like as a linear guide for guiding a reciprocating linear moving object in the moving direction thereof.

Conventionally, a linear motion guide device used in a machine tool or the like includes a guide rail as a guide member and a slider provided so as to be movable along the longitudinal direction (axial direction) of the guide rail. The guide rail is provided with rail-side track surfaces on its left and right side surfaces. The slider includes a slider body formed in a C-shaped cross section and end caps attached to both ends in the axial direction of the slider body. The slider is provided so as to straddle the guide rail, and the slider side raceway surface is provided at a position facing the rail side raceway surface of the guide rail. A load rolling path is formed by the rail-side track surface and the slider-side track surface.

Further, the slider is provided with a rolling element return path substantially parallel to the slider-side track surface and a turning path connecting the load rolling path and the rolling element return path, and the load rolling path, The rolling element circulation path is composed of the rolling element return path and the turning path.
Further, a plurality of rolling elements are loaded in the rolling element circulation path. The rolling element rolls on the load rolling path with a load and rolls on the rolling element return path and the turning path without a load. By rolling the rolling element in this way, the slider is movable along the longitudinal direction of the guide rail while supporting the load.

As such a linear motion guide device, there is one that uses a roller as a rolling element. Compared to a ball, the roller has the advantage of being highly rigid and having a large contact area with the raceway surface constituting the rolling path, so that the load that can be loaded can be increased.

On the other hand, when only the rollers are loaded into the rolling element circulation path and used, the traveling directions of the roller surfaces are opposite to each other at the contact portions between the adjacent rollers, so that the frictional force generated at the contact portions causes the slider. There is a problem that the smooth operation of is hindered. In addition, shaft shake called skew may occur at the rollers, which is a factor that reduces the operability of the slider.

Therefore, conventionally, a linear motion guide device in which holding pieces are arranged between adjacent rollers has been used. The holding piece has a holding piece main body having concave curved surfaces formed at both front and rear ends in the traveling direction of the roller, and an arm portion provided integrally with the holding piece main body and holding both end faces in the axial direction of the roller. When the holding piece is placed between the rollers and the rollers, the rollers are held by the concave curved surface of the holding piece body, and the rollers and the holding piece rotate while sliding when the slider moves, causing shaft shake of the rollers. It can be prevented and the slider can be operated smoothly.

By the way, when assembling a linear motion guide device using a roller and a holding piece, care must be taken to prevent them from falling off the rolling surface when incorporating the roller and the holding piece into the rolling element circulation path. Further, in a narrow work space, since the rollers and the holding pieces are manually aligned and inserted, there is a problem that a lot of labor and time are required. Further, since the time and the holding piece incorporated in the rolling element circulation path cannot be visually confirmed, there is a problem that even if the holding piece is tilted in the rolling element circulation path, it is assembled without being noticed.

Therefore, in Patent Document 1, the rolling element (roller) and the holding piece can be incorporated into the rolling element circulation path without requiring a lot of time and labor at the time of assembly, and the assembly work is to be automated and refined. A method of assembling a linear motion guide device that can be used has been proposed. In the assembly method described in Patent Document 1, the end cap of the slider is provided with a through hole reaching the turning path, and an alignment supply device in which a rolling element and a holding piece are alternately arranged is inserted into the through hole. Then, the rolling element and the holding piece can be incorporated into the rolling element return path in the rolling element circulation path.

The alignment supply device used in the above assembly method comprises a sleeve that rotatably accommodates the rolling element and the holding piece, and a lid that covers the sleeve, and the rolling elements arranged in an aligned manner in the sleeve. It is moved by a pushing member inserted from the opening of the lid.

Japanese Unexamined Patent Publication No. 2005-164008

However, when the rolling element is incorporated into the rolling element circulation path by the alignment supply device, the position where the rolling element is pushed becomes unstable depending on the insertion direction and the moving direction of the pushing member, and the smooth movement of the rolling element becomes difficult. There was something. Further, when the portion of the rolling element or the holding piece deviated from the axial center is pushed by the pushing member, an unusual force is applied to the rolling element and the holding piece, and the shafts of the rolling element and the holding piece arranged in an aligned manner. There was also the possibility that the directions would be different. As a result, work such as rearranging the rolling element and the holding piece is required, and the work efficiency is lowered.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to assemble a linear motion guide device capable of incorporating a rolling element into a rolling element circulation path extremely easily and in a short time with a simple work process. To provide methods and assembly equipment.

The above object of the present invention is achieved by the following configuration.
(1) Guide rail and
A rail-side raceway surface formed along the longitudinal direction of the guide rail on both left and right sides of the guide rail,
A slider body having inner surfaces facing the left and right sides of the guide rail, and
The end caps attached to both ends of the slider body in the front-rear direction,
A slider-side raceway surface formed on the inner surface of the slider body along the longitudinal direction of the guide rail,
It is incorporated inside a slider composed of the slider body and the end cap, and rolls a load rolling path formed between the rail-side track surface and the slider-side track surface, and inside the slider body. A plurality of rolling elements that roll on the rolling element return path formed in the above and the turning path formed in the end cap, and
A method for assembling a linear motion guide device including a plurality of holding pieces interposed between the plurality of rolling elements.
The end cap is provided with a through hole that communicates the surface opposite to the slider body with the direction turning path and allows the rolling element to pass through.
An alignment step of aligning and accommodating the rolling element and the holding piece in an alignment supply device having an end face side opening.
An insertion step of inserting the end face side opening of the alignment supply device into the through hole, and
It has a moving step of moving the rolling element and the holding piece into the inside of the slider through the through hole.
The moving step is a step of pushing out the rolling element and the holding piece by a pushing member inserted into an elongated hole provided in the longitudinal direction of the side surface of the aligned feeding device. Method.
(2) Guidance rail and
On the left and right sides of the guide rail, rail-side raceway surfaces formed along the longitudinal direction of the guide rail, and
A slider body having inner surfaces facing the left and right sides of the guide rail, and
The end caps attached to both ends of the slider body in the front-rear direction,
A slider-side raceway surface formed on the inner surface of the slider body along the longitudinal direction of the guide rail,
It is incorporated inside a slider composed of the slider body and the end cap, and rolls a load rolling path formed between the rail-side track surface and the slider-side track surface, and inside the slider body. A plurality of rolling elements that roll on the rolling element return L path formed in the above and the turning path formed in the end cap, and
An assembly device for a linear motion guide device including a plurality of holding pieces interposed between the plurality of rolling elements.
The end cap is provided with a through hole that communicates the surface opposite to the slider body with the direction turning path and allows the rolling element to pass through.
An alignment supply device for aligning and accommodating the rolling elements and the holding pieces, and
It has a pushing member inserted into an elongated hole provided in the longitudinal direction of the side surface of the alignment feeding device, and has.
An assembly device for a linear motion guide device, wherein the push member pushes out the rolling element and the holding piece through the through hole and moves the rolling element and the holding piece into the inside of the slider.
(3) The assembly device for a linear motion guide device according to (2), wherein a dropout prevention portion having a width dimension larger than the lateral width dimension of the elongated hole is provided at at least one end of the push member.
(4) In the load rolling path, the rolling element return path, and the direction changing path, the plurality of roller-shaped rolling elements and a plurality of holding pieces for holding the plurality of rolling elements at substantially equal intervals are alternately arranged. The holding pieces are arranged so that the holding piece main body has a concave curved surface along the outer peripheral surface of the rolling elements on both end faces facing the adjacent rolling elements, and both sides of the holding piece main body in the width direction. (2) or (3), which has a pair of arms provided parallel to each other, and a guide portion for supporting the arms of the holding piece is provided on the inner surface of the alignment feeding device. The assembly device of the linear motion guide device described.

According to the method of the present invention, the end cap is provided with a through hole through which the rolling element can pass through the surface opposite to the slider main body and the direction change path. The alignment feeding device has a moving step of moving the rolling element and the holding piece into the inside of the slider, and this moving step is performed by a pushing member inserted into an elongated hole provided in the longitudinal direction of the side surface of the alignment feeding device. Since it is a step of pushing out the rolling element and the holding piece, the rolling element and the holding piece can be moved to the inside of the slider very easily and in a short time with a simple operation.
Further, according to the present invention, the assembly device of the linear motion guide device is inserted into the alignment supply device for aligning and accommodating the rolling elements and the holding piece, and the elongated hole provided in the side longitudinal direction of the alignment supply device. It has a pushing member, and since the pushing member pushes out the rolling element and the holding piece through the through hole, the rolling element and the holding piece can be pushed inside the slider very easily and in a short time with a simple operation. Can be moved to.

It is a perspective view which shows the linear motion guidance apparatus which uses the assembly apparatus which concerns on this invention. It is a front view which shows the end cap of the linear motion guide device shown in FIG. It is a front schematic diagram which a part of the end cap in FIG. 2 was excised. FIG. 2 is a cross-sectional view taken along the line AA of FIG. It is a top view which shows one Embodiment of the assembly apparatus which concerns on this invention. It is a side view of the assembly apparatus shown in FIG. 5A. 5A is a cross-sectional view taken along the line CC of FIG. 5A. 5A is a cross-sectional view taken along the line BB of FIG. 5A. It is a top view of the alignment supply device shown in FIG. 5A. FIG. 5 is a sectional view taken along line CC showing a state in which a roller-shaped rolling element and a holding piece are housed in the assembly device shown in FIG. 5A. FIG. 5 is a sectional view taken along line BB showing a state in which a roller-shaped rolling element and a holding piece are housed in the assembly device shown in FIG. 5A. It is a figure which shows the assembly method of the linear motion guide apparatus using one Embodiment of the assembly apparatus which concerns on this invention. It is sectional drawing which shows the 1st modification of one Embodiment of the assembly apparatus which concerns on this invention. It is sectional drawing which shows the 2nd modification of one Embodiment of the assembly apparatus which concerns on this invention.

Hereinafter, an embodiment of the assembly device for the linear motion guide device according to the present invention will be described in detail with reference to the drawings.

First, a linear motion guide device using the assembly device according to the present invention will be described with reference to FIGS. 1 to 4.

As shown in FIG. 1, the linear motion guide device 1 is attached so as to straddle a guide rail 11 extending in one direction and the guide rail 11, and has a substantially C-shaped cross section that can move in the axial direction with respect to the guide rail 11. The shape of the slider 12 and the like are provided. In the specification of the present application, the front-rear direction is the X direction shown in FIG. 1, and represents the longitudinal direction of the rail 11, that is, the direction in which the slider 12 moves along the guide rail 11. Further, the left-right direction is the Y direction shown in FIG. 1, and represents the width direction of the slider 12 attached to the guide rail 11. Further, in the present specification, the mounted surface to which the guide rail 11 is mounted is shown to be on the lower side, and the vertical direction is the Z direction shown in FIG. Therefore, the lower surface and the lower surface represent the side to be mounted, and the upper surface and the upper surface represent the opposite side.

The guide rail 11 is made of metal, and rail-side track surfaces 15 extending along the longitudinal direction of the guide rail 11 are formed on both left and right sides thereof. The rail-side raceway surface 15 includes a rail-side upper raceway surface 15a and a rail-side lower raceway surface 15b. The rail-side upper track surface 15a is formed so as to be obliquely downward with respect to the upper surface of the guide rail 11. The rail-side lower raceway surface 15b is formed so as to be obliquely upward with respect to the lower surface of the guide rail 11.

As shown in FIGS. 2 to 4, the slider 12 includes a slider main body 16 having sleeves 24 on both left and right sides of the guide rail 11, and a pair of end caps attached to one end and the other end of the slider main body 16 in the front-rear direction. 17 and 18 are provided. On the inner surface of each sleeve portion 24 of the slider main body 16, along the longitudinal direction of the guide rail 11, the slider-side upper raceway surface 19a facing the rail-side upper raceway surface 15a of the guide rail 11 and the rail of the guide rail 11 The side lower track surface 15b and the slider side lower track surface 19b facing each other are formed. The load rolling path 25a is formed by the rail-side upper raceway surface 15a and the slider-side upper raceway surface 19a, and the load rolling path 25b is formed by the rail-side lower raceway surface 15b and the slider-side lower raceway surface 19b. Has been done.

The slider main body 16 has two rolling element return paths 22a and 22b on both sleeve portions 24 in addition to the slider-side raceway surface 19 composed of the slider-side upper raceway surface 19a and the slider-side lower raceway surface 19b. The rolling element return paths 22a and 22b each penetrate the thick portions of both sleeve portions 24 in the axial direction of the guide rail 11.

The end caps 17 and 18 are joined (screwed) to both ends of the slider main body 16 in the front-rear direction. The end caps 17 and 18 are, for example, injection-molded products made of a synthetic resin material, and are formed in a substantially C-shaped cross section like the slider main body 16. The end cap 17 has sleeves 26 on both the left and right sides. As shown in FIG. 2, a turning path 21 connecting the load rolling path 25b and the rolling element return path 22b is formed on the end surface of the sleeve portion 26 on the right side of FIG. 2 on the slider body 16 side. Further, the sleeve portion 26 on the right side of FIG. 2 is formed with a turning path (not shown) connecting the load rolling path 25a and the rolling element return path 22a. The turning path 21 and the turning path (not shown) intersect three-dimensionally inside the sleeve portion 26, and each forms an independent passage.
The sleeve portion 26 on the left side of FIG. 2 also has a turning path similar to that of the sleeve portion 26 on the right side.

Further, the sleeve portion 26 of the end cap 17 is provided with a through hole 31 for communicating the surface opposite to the slider main body 16 and the turning path 21 along the axial direction of the guide rail 11. The through hole 31 has a size that allows the rolling element 13 and the holding piece 14, which will be described later, to pass through, and is closed by the removable closing member 32. The inner surface of the blocking member 32 constitutes a part of the turning path 21.
The end cap 18 has the same configuration as the end cap 17. The sleeve portion 26 of the end cap 18 is formed with a turning path 21 that connects the load rolling path 25b and the rolling element return path 22b and forms a pair with the turning path 21 formed on the end cap 17. (See FIG. 4).

The load rolling path 25b, the rolling element return path 22b, and the pair of turning paths 21 constitute the rolling element circulation path 20. In the rolling element circulation path 20 provided in total of four inside the slider 12, for example, a plurality of roller-shaped rolling elements 13 and a plurality of rolling elements 13 are arranged, and the plurality of rolling elements 13 are abbreviated. A plurality of holding pieces 14 to be held at equal intervals are alternately assembled and arranged.

As shown in FIG. 7B, which will be described later, the holding piece 14 interposed between the plurality of rolling elements 13 adjacent to each other has a substantially H-shape when viewed from the vertical direction of FIG. 7B, and a pair of arms having an oval plate shape. It has a portion 14b and a holding piece main body portion 14a that connects the central portions of the arm portions 14b. Further, as shown in FIG. 7A described later, the holding piece main body portion 14a has a concave curved surface along the outer peripheral surface of the rolling element 13 on both end faces facing the adjacent rolling elements 13. The pair of arm portions 14b are provided at both ends of the holding piece main body portion 14a in the width direction so as to be parallel to each other. The arm portion 14b integrally provided with the holding piece main body portion 14a has a shape extending in the front-rear direction of the rolling element 13, and holds both end faces in the axial direction of the rolling elements 13 adjacent to each other in the front-rear direction. Further, the arm portion 14b prevents the rolling element 13 from skewing.

In the holding piece 14 configured in this way, the holding piece main body portion 14a prevents the adjacent rolling elements 13 from coming into direct contact with each other. Therefore, the holding piece 14 has an effect of preventing the rolling elements 13 from interfering with each other and causing shaft shake or the like. Then, the plurality of rolling elements 13 and the holding piece 14 infinitely circulate in the rolling element circulation path 20 as the slider 12 moves relative to each other.

Next, the assembly device 40 according to the present embodiment will be described with reference to FIGS. 5 to 10.

As shown in FIGS. 5A to 5D, the assembly device 40 has a substantially hollow rectangular parallelepiped shape having an opening at one end. Further, the assembly device 40 includes an alignment supply device 41 for aligning and accommodating the rolling elements 13 and the holding piece 14, and a rolling element circulation inside the slider 12 for the rolling elements 13 and the holding piece 14 accommodated in the alignment supply device 41. A pushing member 43 to be moved to the road 20 is provided.

As shown in FIG. 6, the alignment supply device 41 has an upper surface side opening 41a on the upper surface, and has an end face side opening 41b on an end surface (longitudinal end surface) in the direction in which the rolling element 13 and the holding piece 14 are aligned. It is composed of a main body 42a and a lid member 42b that closes the upper surface side opening 41a of the main body 42a.

Further, both side walls in the width direction of the alignment supply device 41 are provided with elongated holes 41f penetrating in the width direction and along the direction (longitudinal direction) in which the rolling elements 13 and the holding pieces 14 are aligned. The push member 43 has a cylindrical shape and is inserted into the elongated hole 41f so as to penetrate the alignment supply device 41 in the width direction.
Both ends of the push member 43 project from both sides of the alignment supply device 41 in the width direction. The diameter of the push member 43 is formed to be slightly smaller than the width dimension in the lateral direction of the long hole 41f, and the push member 43 moves smoothly in the longitudinal direction of the long hole 41f without rattling. It is configured to be possible.

Further, a step portion (guide portion) 41c extending in the longitudinal direction is provided in the vicinity of the bottom surface of the inner side surface in the width direction of the main body 42a. The upper surface of the step portion 41c is formed on the same plane as the inner lower surface of the elongated hole 41f. Further, the upper surface side opening 41a of the main body 42a is provided with a lid step portion 41d for fitting the lid member 42b. Further, the side wall of the end face side opening 41b of the main body 42a becomes lower toward the bottom surface as it approaches the tip end, and a curved portion 41e that can be inserted into the through hole 31 of the end cap 17 is formed.

The lid member 42b is a long plate-shaped member, and by fitting the lid member 42b into the lid step portion 41d of the main body 42a, the upper surface side opening 41a of the main body 42a can be closed. The space surrounded by the main body 42a and the lid member 42b preferably has the same shape as the rolling element return paths 22a and 22b in the cross section shown in FIG. 5D, and the length of the space in the cross section shown in FIG. 5C. (The length in the direction in which the rolling elements 13 are aligned) is preferably formed to be equal to or longer than the total length of the rolling elements circulation path 20.

In the present embodiment, the alignment supply device 41 is composed of the main body 42a and the lid member 42b, but the present invention is not limited to such a configuration. For example, the lid member 42b may not be used, and an opening narrower than the width of the rolling element 13 and the holding piece 14 may be integrally formed with the main body 42a on the upper surface side of the main body 42a. With such a configuration, it is possible to prevent the rolling element 13 and the holding piece 14 from falling off from the upper surface side opening 41a.
Further, when the lid member 42b is used, the main body 42a and the lid member 42b may be integrated by something like a hinge.

Next, with reference to FIGS. 7 and 8, a method of assembling the linear motion guide device 1 using the assembly device 40 according to the present embodiment will be described.
First, the pushing member 43 inserted into the elongated hole 41f of the main body 42a is slid and moved to the vicinity of the end portion on the opposite side to the end face side opening 41b. Then, the rolling elements 13 and the holding pieces 14 are alternately aligned and accommodated in the main body 42a from the upper surface side opening 41a of the main body 42a in the alignment supply device 41 (alignment step).
After that, the lid member 42b is fitted to the lid step portion 41d of the main body 42a to close the upper surface side opening 41a, and the assembly device 40 in which the rolling element 13 and the holding piece 14 are housed is configured (see FIG. 7A). ).
In this state, as shown in FIG. 7B, the arm portion 14b of the holding piece 14 is supported by the step portion (guide portion) 41c, and the end surface position of the rolling element 13 is supported by the inner step surface of the step portion (guide portion) 41c. The position in the width direction) is regulated. Further, the vertical position of the central axis of the push member 43 substantially coincides with the vertical position of the central axis of the rolling element 13, and is represented as the central axis O shown by the alternate long and short dash line in FIG. 7B.

After that, as shown in FIG. 8, the end face side opening 41b of the assembly device 40 (alignment supply device 41) is inserted into the through hole 31 of the end cap 17 (insertion step). At this time, when the tip of the end face side opening 41b (curved portion 41e) reaches the vicinity of the rolling element return path 22b (see FIG. 3), the insertion of the assembly device 40 is stopped. Subsequently, the pushing member 43 is slid in the direction of the arrow 44 on the end face side opening 41b side of the assembly device 40, and the rolling element 13 and the holding piece 14 are pushed out. As a result, with the rolling element 13 and the holding piece 14 aligned, the rolling element 13 moves into the rolling element circulation path 20 in the slider 12 through the through hole 31 (movement step), and the rolling element 13 enters the rolling element circulation path 20. And the holding piece 14 are loaded. After that, the through hole 31 is closed with the closing member 32.

The linear motion guide device 1 is provided with two rolling element circulation paths, two on each of the left and right sleeves of the slider 12, for a total of four rolling element circulation paths. Therefore, first, the rolling element 13 and the holding piece 14 are sequentially loaded into the two rolling element circulation paths through the through holes 31 provided at the two positions of the end cap 17, and are closed by the closing member 32. After that, in the same manner, the rolling element 13 and the holding piece 14 are sequentially loaded into the other two rolling element circulation paths through the through holes provided at the two positions of the end cap 18, and are closed by the closing member 32. .. As a result, the roller-shaped rolling element 13 and the holding piece 14 can be loaded into all the rolling element circulation paths in the slider 12.

In the assembly device 40 configured in this way, when the rolling element 13 and the holding piece 14 are pushed out by the pushing member 43 in a state where the pushing member 43 is in contact with the rolling element 13, the outer peripheral surface of the pushing member 43 is used. It comes into linear contact with the outer peripheral surface of the rolling element 13.
On the other hand, when the rolling element 13 and the holding piece 14 are pushed out by the pushing member 43 with the pushing member 43 in contact with the holding piece 14, the outer peripheral surface of the pushing member 43 and the holding piece 14 are separated from each other in the width direction. The two points (a pair of arms 14b) are in contact with each other. Therefore, since the force of the pushing member 43 is applied to the center of gravity of the rolling element 13 and the holding piece 14 (the center in the vertical direction and the width direction of the space surrounded by the main body 42a and the lid member 42b), the rolling element 13 and the holding piece 14 14 can be easily and stably loaded in the rolling element circulation path 20.

Further, if the length of the space in the alignment supply device 41 in which the rolling element 13 and the holding piece 14 are accommodated is formed to be equal to or longer than the total length of the rolling element circulation path 20, the loading operation is completed at one time, which is simpler. The linear motion guide device 1 can be assembled in a simple work process.

Further, in the present embodiment, the step portion (guide portion) 41c provided on the inner surface of the alignment supply device 41 supports the arm portion 14b of the holding piece 14 and has an action of guiding the holding piece 14 in the traveling direction. .. Therefore, when the rolling elements 13 and the holding pieces 14 are alternately housed in the alignment supply device 41, both can be easily aligned. Further, the pushing member 43 can be used to smoothly move the rolling element 13 and the holding piece 14 along the step portion 41c.

As described above, according to the assembly device 40 of the present embodiment, the elongated hole 41f is formed in the longitudinal direction of both side surfaces of the alignment supply device 41 along the direction in which the rolling elements 13 are aligned, and the pushing member. 43 is inserted into the elongated hole 41f so as to penetrate the alignment supply device 41 in the width direction. Therefore, the rolling element 13 can be stably incorporated into the rolling element circulation path 20 in a very short time by a simple work process of sliding the pushing member 43 in the direction of moving the rolling element 13.

Next, a first modification of the assembly device of the present embodiment will be described with reference to FIG. 9. In this modification, as shown in FIG. 9, dropout prevention portions 43a having a width dimension larger than the lateral width dimension of the elongated hole 41f in the radial direction of the push member 43 are provided at both ends of the push member 43, respectively. It is provided. The dropout prevention portion 43a may be provided only at one end of the push member 43. Further, the dropout prevention portion 43a may be integrally formed with the push member 43, or may be formed as a separate body and attached by adhesion or the like.

According to this modification, since the dropout prevention portion 43a is provided at at least one end of the push member 43, it is possible to prevent the push member 43 from falling off (such as falling off) from the elongated hole 41f. As a result, there is no concern that the pushing member 43 will fall off, so that work efficiency can be further improved.

Next, a second modification of the assembly device of the present embodiment will be described with reference to FIG. In this modification, as shown in FIG. 10, the pushing member 53 inserted into the elongated hole 41f of the alignment supply device 41 has a quadrangular prism shape.

According to this modification, since the pushing member 53 has a quadrangular prism shape, when the pushing member 53 moves the rolling element 13 and the holding piece 14, the rolling element 13 is in contact with a plane orthogonal to the moving direction. Push out (linear contact) or holding piece 14 (two-point contact). Therefore, since the force of the pushing member 53 is applied to the center of gravity of the rolling element 13 and the holding piece 14 (the center in the vertical direction and the width direction of the space surrounded by the alignment supply device 41 and the lid member 42b), the rolling element 13 and the holding piece 14 are held. The piece 14 can be easily and stably loaded in the rolling element circulation path 20.

Further, since the pushing member 53 has a quadrangular prism shape, the upper and lower surfaces of the pushing member 53 come into surface contact with the inner upper and lower surfaces of the elongated hole 41f, respectively. As a result, when the pushing member 53 is slid and moved, the upper and lower surfaces of the pushing member 53 are guided by the inner upper and lower surfaces of the elongated holes 41f, respectively, so that the pushing member 53 can be stably slid and moved without rolling. Work efficiency can be further improved.

The present invention is not limited to those exemplified in the above embodiments, and can be appropriately modified without departing from the gist of the present invention.
For example, in the present invention, the shape of the alignment supply device and the lid member is arbitrary because the push member may be inserted so as to penetrate the alignment supply device in the width direction.
Further, the alignment supply device and the lid member are preferably formed of an inexpensive resin molded product, but may be made of metal.
Further, in the above embodiment, the case where the present invention is applied to an assembly device for loading a roller-shaped rolling element is exemplified, but the present invention is not limited to this, and the present invention is applied to an assembling device for loading a ball-shaped rolling element. You may.

1 Linear guide device 11 Guide rail 12 Slider 13 Rolling element 14 Holding piece 14a Holding piece main body 14b Arm 15 Rail side track surface 15a Rail side upper track surface 15b Rail side lower track surface 16 Slider body 17, 18 End cap 19 Slider side track surface 19a Slider side upper track surface 19b Slider side lower track surface 20 Rolling element circulation path 21 Directional turning path 22a, 22b Rolling element return path 25a, 25b Load rolling path 31 Through hole 32 Closure member 40 Assembly device 41 Alignment Supply device 41a Top side opening 41b End face side opening 41c Step part (guide part)
41d Step for lid 41e Curved part 41f Long hole 42b Lid member 43 Push member 43a Fall prevention part 53 Push member

Claims (4)

Information rail and
A rail-side raceway surface formed along the longitudinal direction of the guide rail on both left and right sides of the guide rail,
A slider body having inner surfaces facing the left and right sides of the guide rail, and
The end caps attached to both ends of the slider body in the front-rear direction,
A slider-side raceway surface formed on the inner surface of the slider body along the longitudinal direction of the guide rail,
It is incorporated inside a slider composed of the slider body and the end cap, and rolls a load rolling path formed between the rail-side track surface and the slider-side track surface, and inside the slider body. A plurality of rolling elements that roll on the rolling element return path formed in the above and the turning path formed in the end cap, and
A method for assembling a linear motion guide device including a plurality of holding pieces interposed between the plurality of rolling elements.
The end cap is provided with a through hole that communicates the surface opposite to the slider body with the direction turning path and allows the rolling element to pass through.
An alignment step of aligning and accommodating the rolling element and the holding piece in an alignment supply device having an end face side opening.
An insertion step of inserting the end face side opening of the alignment supply device into the through hole, and
It has a moving step of moving the rolling element and the holding piece into the inside of the slider through the through hole.
The moving step is a step of pushing out the rolling element and the holding piece by a pushing member inserted into an elongated hole provided in the longitudinal direction of the side surface of the aligned feeding device. Method. Information rail and
On the left and right sides of the guide rail, rail-side raceway surfaces formed along the longitudinal direction of the guide rail, and
A slider body having inner surfaces facing the left and right sides of the guide rail, and
The end caps attached to both ends of the slider body in the front-rear direction,
A slider-side raceway surface formed on the inner surface of the slider body along the longitudinal direction of the guide rail,
It is incorporated inside a slider composed of the slider body and the end cap, and rolls a load rolling path formed between the rail-side track surface and the slider-side track surface, and inside the slider body. A plurality of rolling elements that roll on the rolling element return L path formed in the above and the turning path formed in the end cap, and
An assembly device for a linear motion guide device including a plurality of holding pieces interposed between the plurality of rolling elements.
The end cap is provided with a through hole that communicates the surface opposite to the slider body with the direction turning path and allows the rolling element to pass through.
An alignment supply device for aligning and accommodating the rolling elements and the holding pieces, and
It has a pushing member inserted into an elongated hole provided in the longitudinal direction of the side surface of the alignment feeding device, and has.
An assembly device for a linear motion guide device, wherein the push member pushes out the rolling element and the holding piece through the through hole and moves the rolling element and the holding piece into the inside of the slider. The assembly device for a linear motion guide device according to claim 2, wherein at least one end of the push member is provided with a dropout prevention portion having a width dimension larger than the lateral width dimension of the elongated hole. In the load rolling path, rolling element return path, and turning path, the plurality of roller-shaped rolling elements and a plurality of holding pieces for holding the plurality of rolling elements at substantially equal intervals are alternately arranged.
The holding pieces are parallel to each other on both sides in the width direction of the holding piece main body having a concave curved surface along the outer peripheral surface of the rolling elements on both end surfaces facing the adjacent rolling elements. With a pair of arms provided,
The assembly device for a linear motion guide device according to claim 2 or 3, wherein a guide portion for supporting the arm portion of the holding piece is provided on the inner surface of the alignment supply device.

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