JP2018105489A - Method for assembling linear motion guide device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique capable of improving shock resistance of a linear motion guide device.SOLUTION: A method for assembling a linear motion guide device 10 comprises: a step of preparing a slider body 20, an end cap 40, and a positioning jig 6; a step of attaching the positioning jig 6 to the slider body 20 by screwing a screw part 6a of the positioning jig 6 into an attaching screw hole 26 of the slider body 20; a step of positioning a raceway surface 22b of the slider body 20 and a rolling element initial contact place 43a of the end cap 40 by inserting an insertion part 6b of the positioning jig 6 into a through hole 46 of the end cap 40 with the positioning jig 6 fixed to the slider body 20; and a step of fixing the end cap 40 to the slider body 20 with the raceway surface 22b of the slider body 20 and the rolling element initial contact place 43a of the end cap 40 positioned.SELECTED DRAWING: Figure 11

Description

  The present invention relates to a method for assembling a linear motion guide device.

  The linear motion guide device includes a guide rail, a slider, and a plurality of rolling elements. Each of the guide rail and the slider has a raceway surface that forms a rolling passage of the rolling element at a position facing each other. The linear motion guide device includes a circulation path through which the rolling elements circulate, and one of the guide rail and the slider moves linearly relative to the other through the rolling elements that circulate in the circulation path. ing.

  The slider includes a slider body and end caps provided at both ends of the slider body in the longitudinal direction of the guide rail. The circulation path mainly includes a rolling path, a return path, and a direction changing path that communicates the rolling path and the return path. The return passage is provided in the slider body. The direction change path is provided in the end cap. The rolling elements in the rolling path move in the same direction as the slider with respect to the guide rail while rolling in the rolling path. And when a rolling element reaches the end point of a rolling passage, it will be scooped up from a rolling passage by the tongue part provided in the end cap, and will be sent to a direction change path. The rolling element that has entered the direction change path makes a U-turn and is introduced into the return path, and reaches the opposite direction change path through the return path. Here, the U-turn is performed again to return to the starting point of the rolling path, and the circulation in the circulation path is repeated infinitely.

In such a linear motion guide device, the end of the end cap tongue portion on the side of the rolling path, that is, between the rolling element first contact point where the rolling element first contacts the direction change path and the raceway surface of the guide rail. There is a step higher on the tongue side. And since the rolling element sent to the direction change path from the rolling passage is scooped up by colliding with the rolling element first contact portion of the tongue part, the rolling element first contact of the tongue part with the passage of the running time of the slider The possibility of damage to the part increases.
Therefore, Patent Document 1 discloses a technique for suppressing damage caused to the rolling element first contact portion of the tongue portion by increasing the rigidity by increasing the thickness of the rolling member first contact portion of the tongue portion. It is disclosed.

JP 2004-68880 A

  By the way, since the linear motion guide device has a structure in which the end cap is assembled to the slider main body, a positional shift may occur in the positional relationship between the track surface of the slider main body and the tongue portion of the end cap. This misalignment affects the gap between the end cap tongue and the guide rail track surface. When this gap increases, the contact angle between the rolling element first contact point of the tongue and the rolling element increases, and the rolling element sent from the rolling path to the direction change path collides with the rolling element first contact point of the tongue. The impact force to be increased. For this reason, possibility that a tongue part and a rolling element will be damaged becomes high. In particular, in a high-speed linear motion guide device, a ceramic ball may be used as a rolling element, and a metal end cap may be used. In such a case, damage to the tongue portion and the ceramic ball becomes significant.

Such damage to the tongue and rolling elements hinders the improvement in impact resistance of the linear motion guide device, so there is room for improvement.
The present invention has been made paying attention to the above problems, and an object of the present invention is to provide a technique capable of improving the impact resistance of the linear motion guide device.

  In order to solve the above problems, a method for assembling a linear motion guide device according to an aspect of the present invention includes a raceway surface that forms a rolling passage of a rolling element with a raceway surface of a guide rail, and the longitudinal direction of the guide rail. The slider body is provided with mounting screw holes on the end face in the moving direction along the moving surface, and the rolling element first contact portion is provided on the end face facing the end face in the moving direction of the slider body. And a step of preparing an end cap provided with a through hole at a position facing the mounting screw hole, and a rod-shaped positioning jig having a screw part attached to the mounting screw hole and an insertion part inserted into the through hole; The step of attaching the positioning jig to the slider main body by screwing the screw portion of the positioning jig into the mounting screw hole of the slider main body, and the insertion of the positioning jig with the positioning jig fixed to the slider main body Is inserted into the through hole of the end cap to position the raceway surface of the slider body and the first contact point of the rolling element of the end cap, and the track surface of the slider body and the first contact point of the rolling element of the end cap are positioned. And a step of fixing the end cap to the slider body, and the guide rail and the end cap can be easily positioned.

  According to one aspect of the present invention, it is possible to improve the impact resistance of the linear motion guide device.

It is a perspective view showing a schematic structure of a linear motion guide device according to an embodiment of the present invention. It is a disassembled perspective view which shows schematic structure of the slider of FIG. It is the front view which looked at the linear motion guide apparatus of FIG. 1 from the axial direction of the guide rail. It is a perspective view which shows the structure by the side of the slider main body of the end cap of FIG. FIG. 4 is a cross-sectional view showing a cross-sectional structure along the line AA in FIG. 3. It is the expanded sectional view which expanded the part of the tongue part of FIG. In the linear motion guide device according to one embodiment of the present invention, it is a main part sectional view showing a state in which a side seal is attached to a slider body via an end cap with a screw member. In the linear guide apparatus which concerns on one Embodiment of this invention, it is a figure which shows the part of the fitting recessed part of a slider main body, and the part of a fitting convex part of an end cap. In the linear motion guide device according to one embodiment of the present invention, it is a main part sectional view showing a state in which an end cap is attached to a slider body with a screw member. It is a perspective view of the positioning jig used with the assembly method of the linear guide apparatus which concerns on one Embodiment of this invention. It is a figure for demonstrating the assembly method of the linear guide apparatus which concerns on one Embodiment of this invention. It is a figure for demonstrating the assembly method of the linear guide apparatus which concerns on one Embodiment of this invention.

Hereinafter, a linear motion guide device and an assembly method thereof according to an embodiment of the present invention will be described with reference to the drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiments of the invention, and the repetitive description thereof is omitted.
In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the present invention. However, it will be apparent that one or more embodiments may be practiced without such specific details. In other instances, well-known structures and devices are schematically shown in order to simplify the drawing.

As shown in FIGS. 1 to 3, a linear guide apparatus 10 according to an embodiment of the present invention includes a guide rail 1 and a slider that is movably attached along the longitudinal direction of the guide rail 1 in the X direction. 2 are provided. The guide rail 1 has an outer surface 11 and extends along the X direction. Although not shown, the slider 2 has an inner surface facing the outer surface 11 of the guide rail 1.
The linear motion guide device 10 according to this embodiment includes a plurality of balls 3 as rolling elements and an endless circulation path 31 (see FIG. 5) through which the plurality of balls 3 circulate. As the ball 3, for example, a ceramic ball is used.

  The slider 2 includes a slider body 20, end caps 40 provided at both ends in the moving direction of the slider body 20, and sides provided on opposite sides of the end caps 40 to the slider body 20 side. And a seal 50. The end cap 40 passes through the through-hole 45 provided in the end cap 40 and moves in the moving direction of the slider body 20 by the screw member 8 screwed into the mounting screw hole 25 provided in the end surface in the moving direction of the slider body 20. It is fastened and fixed to the end face. Further, the side seal 50 passes through the through hole 56 provided in the side seal 50 and the through hole 46 provided in the end cap 40, and enters the mounting screw hole 26 provided in the end surface of the slider body 20 in the moving direction. The end cap 40 is fastened and fixed to the end surface of the end cap 40 opposite to the end surface on the slider body 20 side by the screw member 9 to be screwed.

The outer surface 11 of the guide rail 1 includes a main surface portion (front surface portion) 11a and a rear surface portion 11b that are located on opposite sides in the height direction in the Z direction orthogonal to the longitudinal direction of the guide rail 1, and the axis of the guide rail 1. It has two side surface parts 11c and 11d located on opposite sides in the width direction in the Y direction perpendicular to the direction and the height direction. And the raceway surface 12a on which the ball | bowl 3 rolls is provided in the ridgeline part which the main surface part 11a, the side part, and 11c, 11d cross | intersect. In addition, a track surface 12b on which the ball 3 rolls is provided at an intermediate portion in the Z direction of each of the two side surface portions 11c and 11d. The raceway surface 12a has a concave surface shape with a cross section orthogonal to the longitudinal direction of the guide rail 1 having a substantially ¼ arc. The track surface 12b has a concave shape with a cross section orthogonal to the longitudinal direction of the guide rail 1 having a substantially ½ arc. The raceway surfaces 12 a and 12 b are arranged in a two-stage arrangement in the thickness direction of the guide rail 1 and extend along the longitudinal direction of the guide rail 1.
Here, the main surface portion 11a, the back surface portion 11b, and the side surface portions 11c, 11d are relatively expressed parts of the outer surface 11 of the guide rail 1, and the “main surface portion” is referred to as the “first surface portion”. The “back surface portion” may be expressed as a “second surface portion”, and the “side surface portion” may be expressed as a “third surface portion”.

  As shown in FIGS. 2 and 3, the slider body 20 includes a pair of body portions 21a facing the main surface portion 11a of the guide rail 1 and a pair of body portions 21a that are separated from each other in the width direction of the guide rail 1 and connected to the body portion 21a. It has leg portions 21c and 21d. One leg portion 21 c is disposed to face one side surface portion 11 c of the guide rail 1, and the other leg portion 21 d is disposed to face the other side surface portion 11 d of the guide rail 1. In the inner surface of the slider body 20, a raceway surface 22a on which the ball 3 rolls is provided at a corner where the body portion 21a and the leg portions 21c and 21d intersect. In addition, on the inner surface of the slider main body 20, a track surface 22b on which the ball 3 rolls is provided at an intermediate portion in the Z direction of each of the two leg portions 21c and 21d. Similar to the track surface 12 a of the guide rail 1, the track surface 22 a has a concave shape with a cross section orthogonal to the X-direction moving direction of the slider 2 having a substantially ¼ arc. Similar to the track surface 12b of the guide rail 1, the track surface 22b has a concave shape with a cross section orthogonal to the moving direction of the slider 2 having a substantially ½ arc. The raceway surfaces 22 a and 22 b are arranged in a two-stage arrangement in the height direction of the slider 2 in the Z direction, and extend along the moving direction of the slider 2.

The raceway surface 12a of the guide rail 1 and the raceway surface 20a of the slider body 20 are opposed to each other to form a rolling passage 32 in which the ball 3 rolls. Further, the raceway surface 12b of the guide rail 1 and the raceway surface 22b of the slider body 20 face each other to form a rolling passage 32 where the ball 3 rolls. That is, the guide rail 1 and the slider body 20 have raceway surfaces 12a, 12b, 22a, and 22b that form the rolling passages 32 of the balls 3 at positions facing each other.
The slider body 20 also has a return passage 33 for the ball 3. Two return passages 33 are arranged in a two-stage arrangement in each of the two leg portions 21c and 21d of the slider body 20 in the Z direction. The return passage 33 is formed as a through hole that penetrates through both ends of the slider body 20 in the moving direction and extends substantially parallel to the track surface 22b.

  As shown in FIGS. 2 and 4, the end cap 40, as with the slider body 20, is separated from each other in the width direction of the guide rail 1 by the body 41 a facing the main surface portion 11 a of the guide rail 1. It has a pair of leg parts 41c and 21d connected to 41a. As shown in FIGS. 4 and 5, the end cap 40 has a direction change path 34 that is formed on the contact surface on the slider body 20 side and communicates the rolling path 32 and the return path 33. . Further, the end cap 40 has a tongue portion 43 that scoops up the ball 3 at the starting point of the rolling passage 32 and guides it to the direction changing passage 34. For example, a metal end cap is used as the end cap 40.

As shown in FIG. 2, the side seal 50 is connected to the body 51 a that is separated from each other in the width direction of the guide rail 1 and the body 51 a facing the main surface portion 11 a of the guide rail 1, similarly to the slider body 20. And a pair of leg portions 51c and 51d. The side seal 50 is in contact with the outer surface 11 of the guide rail 1 so that the end facing the guide rail 1 is slidable (sliding contact), and seals the gap between the slider body 20 and the guide rail 1. Yes.
As shown in FIG. 5, the circulation path 31 includes a rolling path 32, a return path 33, and a direction changing path 34. In the circulation path 31, the ball 3 in the rolling passage 32 moves in the same direction as the slider 2 with respect to the guide rail 1 while rolling in the rolling passage 32. When the ball 3 reaches the end point of the rolling passage 32, the ball 3 is scooped up from the rolling passage 32 by the tongue 43 provided in the end cap 40 and sent to the direction changing passage 34. The ball 3 that has entered the direction change path 34 is U-turned and introduced into the return path 33, and reaches the opposite direction change path through the return path 33. Then, the ball 3 reaching the opposite direction change path makes a U-turn again and returns to the starting point of the rolling path 32, thereby repeating the circulation in the circulation path 31 infinitely.

Note that the linear guide device 10 according to this embodiment includes three circulation paths in addition to the circulation path 31 shown in FIG. These three circulation paths have substantially the same configuration as the circulation path 31 shown in FIG. 5 except that the arrangement and the shape of the raceway surface forming the rolling passage 31 are different. Therefore, the circulation path 3 shown in FIG. This will be described by way of example, and description of the other three circulation paths will be omitted.
As shown in FIG. 6, the linear motion guide device 10 according to this embodiment has a ball first contact location where the ball 3 first contacts the tip of the tongue portion 43 on the rolling passage 32 side, that is, the direction change path 34 ( The rolling element first contact portion) 43a is thickened to increase the rigidity. A gap exists between the tongue 43 and the raceway surface 12 b of the guide rail 1. Here, the thickness of the ball first contact portion 43a on the rolling passage 32 side of the tongue portion 43 is α, and the gap (separation distance) between the ball first contact portion 43a of the tongue portion 43 and the raceway surface 12b of the guide rail 1 is assumed. Where t is the position where the ball 3 is in contact with the ball first contact location 43a of the tongue 43, α + t. This α + t is not more than 0.1 times the diameter of the ball 3.

As shown in FIG. 6, the linear motion guide device 10 according to this embodiment has a tongue portion 43 side between the ball first contact portion 43 a on the rolling passage 32 side of the tongue portion 43 and the raceway surface 12 b of the guide rail 1. There is a step that is one step higher. For this reason, the ball 3 sent to the direction change path 34 from the rolling passage 32 is scooped up by colliding with the ball first contact location 43 a of the tongue portion 43.
When α + t, which is a position where the ball 3 contacts the ball first contact portion 43a of the tongue portion 43, is large, the contact angle at which the ball 3 contacts the ball first contact portion 43a of the tongue portion 43 increases, and the direction from the rolling path 32 increases. The impact force with which the ball 3 sent to the conversion path 34 collides with the ball first contact location 43a of the tongue portion 43 is increased.

  On the other hand, if α + t is small, the contact angle at which the ball 3 comes into contact with the ball first contact portion 43 a of the tongue portion 43 becomes small, and the ball 3 can be scooped up smoothly from the rolling passage 32. And since the impact force which the ball 3 sent to the direction change path 34 from the rolling path 32 collides with the ball | bowl first contact location 43a of the tongue part 43 becomes small, with progress of the running time of the slider 2, the tongue part 43's The possibility of damage to the ball first contact portion 43a and the ball 3 is reduced.

  As shown in FIGS. 2, 3, and 9, a mounting screw hole 25 facing the through hole 45 provided in the end cap 40 is provided on the end surface of the slider body 20 in the moving direction. The end cap 40 is an end surface in the moving direction of the slider main body 20 by the screw member 8 screwed into the mounting screw hole 25 through the through hole 45 from the surface of the end cap 40 opposite to the surface on the slider main body 20 side. It is fastened to the fastening. Two mounting screw holes 25 are provided in the body portion 21a of the slider body 20 side by side in the Y direction. The mounting screw hole 25 has a female screw formed on the inner peripheral surface. The screw member 8 has a male screw formed on the outer peripheral surface.

As shown in FIGS. 2, 3, 7 and 8, a fitting recess 27 is provided on the end surface of the slider body 20 in the moving direction. The fitting recess 27 is provided in each of the two leg portions 21 c and 21 d of the slider body 20. The fitting recess 27 has a planar shape, for example, a circular shape.
At the bottom of the fitting recess 27, a mounting screw hole 26 facing the through hole 46 provided in the end cap 40 and the through hole 56 provided in the side seal 50 is provided. The side seal 50 is formed on the slider body 20 by the screw member 9 screwed into the mounting screw hole 26 through the through hole 56 and the through hole 46 from the surface side opposite to the surface of the side seal 50 on the end cap 40 side. It is fastened and fixed to the end surface in the moving direction via an end cap 40.

  As shown in FIGS. 4, 7, and 8, a fitting convex portion 47 that fits into the fitting concave portion 27 is provided on the surface of the end cap 40 on the slider body 20 side. Conventionally, the track surface 22b of the slider main body 20 and the tongue 43 of the end cap 40 are positioned by fitting the fitting convex portion 47 and the fitting concave portion 27 together. However, the positioning in this case has the following problems.

  That is, in the case of impact resistance, a metal end cap may be used depending on the speed. In this case, the outer diameter of the fitting convex portion 47 of the end cap 40 is made minus 0.1 to 0.2 mm with respect to the inner diameter of the fitting concave portion 27 of the slider body 20. This is because in the resin end cap, even if the outer diameter of the fitting convex portion 47 of the end cap 40 is somewhat larger than the inner diameter of the fitting concave portion 27 of the slider body 20, the fitting convex portion 47 is deformed, and the slider Although it can be inserted into the fitting recess 27 of the body 20, in the case of a metal end cap, the outer diameter of the fitting protrusion 47 of the end cap 40 is larger than the inner diameter of the fitting recess 27 of the slider body 20. If it is large, it will be impossible to assemble. For this reason, if the positioning function is lost and assembled as it is, the positional relationship between the track surface 22b of the slider body 20 and the tongue portion 43 of the end cap 40 is displaced, and the tongue portion 43 of the end cap 40 A positional shift also occurs in the positional relationship between the guide rail 1 and the track surface 12b. This misalignment affects the gap t between the tongue 43 of the end cap 40 and the track surface 12b of the guide rail 1. When the gap t increases, as described above, the contact angle at which the ball 3 comes into contact with the ball first contact portion 43a of the tongue portion 43 increases, and the ball 3 sent from the rolling path 32 to the direction changing path 34 becomes larger. The impact force that collides with the ball first contact location 43a of the tongue portion 43 increases. As the travel time of the slider 2 elapses, the possibility that the tongue 43 and the ball 3 are damaged early increases.

Further, since the fitting convex portion 47 of the end cap 40 protrudes from the side surface of the end cap 40, it easily breaks, and if it is damaged, it is necessary to replace the end cap 40 together.
Therefore, the linear guide apparatus 10 according to this embodiment is assembled by an assembling method using the positioning jig 6 shown in FIG. The positioning jig 6 is formed in a rod shape having a screw part 6 a attached to the attachment screw hole 26 of the slider body 20 and an insertion part 6 b inserted into the through hole 46 of the end cap 40. The positioning jig 6 has a circular cross section orthogonal to the longitudinal direction in accordance with the planar shape of the through hole 46. Hereinafter, a method for assembling the linear guide apparatus 10 according to this embodiment will be described with reference to FIGS. 10 to 12.

First, the slider body 20, the end cap 40, and the side seal 50 shown in FIG. 2 are prepared, and the positioning jig 6 shown in FIG. 10 is prepared.
Next, as shown in FIG. 11A, the positioning jig 6 is attached to the slider body 20 by screwing the screw portion 6 a of the positioning jig 6 into the mounting screw hole 26 of the slider body 20.
Next, as shown in FIG. 11 (b), the insertion portion 6 b of the positioning jig 6 is inserted into the through hole 46 of the end cap 40 in a state where the positioning jig 6 is fixed to the slider body 20. As shown in FIG. 5C, the fitting convex portion 47 of the end cap 40 is fitted into the fitting concave portion 27 of the slider main body 20, and referring to FIG. The part 43 is positioned.

Next, the end cap 40 is fixed to the slider body 20 with the raceway surface 22b of the slider body 20 and the tongue 43 of the end cap 40 positioned. As shown in FIG. 12, the end cap 40 is inserted into the through hole 45 from the surface of the end cap 40 opposite to the surface on the slider body 20 side, and the screw member 8 is inserted into the mounting screw hole 25. By screwing, the slider body 20 is fastened and fixed to the end surface in the moving direction.
Next, after fixing the end cap 40 to the slider body 20, the positioning jig 6 is removed from the slider body 20 and the end cap 40 as shown in FIG.

  Next, after removing the positioning jig 6, the side seal 50 is attached to the slider body via the end cap 40. Referring to FIG. 7, the side seal 50 is attached to the screw member 9 by inserting the screw member 9 into the through hole 56 and the through hole 46 from the side of the side seal 50 opposite to the end cap 40 side. By screwing into the screw hole 26, the slider body 20 is fastened and fixed to the end surface in the moving direction of the slider body 20 via the end cap 40. By this process, the slider 2 in which the end cap 40 and the side seal 50 are attached to the slider body 20 is almost completed.

Thereafter, the plurality of balls 3 are filled in the circulation path 31 of the slider 2, and then the slider 2 is attached to the guide rail 1, whereby the linear motion guide device 10 is almost completed.
Thus, according to the assembling method of the linear guide device 10 using the positioning jig 6, positioning by fitting between the fitting concave portion 27 of the slider body 20 and the fitting convex portion 47 of the end cap 40 is used. Even without this, the track surface 22b of the slider main body 20 and the tongue portion 42 of the end cap 40 can be easily positioned.
Further, conventionally, a ball is filled in the circulation path of the slider body while the end cap is temporarily fixed to the slider body, and the slider body in a state of being filled with the ball is attached to the guide rail, and the guide rail is moved over the guide rail. After reciprocating three to three times, the end cap is fixed to the slider body by performing final tightening, thereby positioning the track surface 22b of the slider body 20 and the tongue 43 of the end cap 40.

On the other hand, in the assembling method of the linear motion guide device 10 of this embodiment, the slider 2 is not attached to the guide rail 1, and the track surface 22b of the slider body 20 and the tongue 43 of the end cap 40 are aligned. be able to. Therefore, since the number of assembly steps and time can be reduced, the cost of the linear motion guide device 10 can be reduced.
Further, the positioning of the track surface 22b of the slider main body 20 and the tongue portion 42 of the end cap 40 can be performed without using the positioning by the fitting concave portion 27 of the slider main body 20 and the fitting convex portion 47 of the end cap 40. Therefore, even when a metal end cap and a ceramic ball are used at high speed, the impact resistance of the linear guide device 10 can be improved.

  Further, since the dimensional difference between the inner diameter φD1 of the fitting concave portion 27 of the slider main body 20 and the outer diameter φD2 of the fitting convex portion 47 of the end cap 40 shown in FIG. When attaching, the collision between the fitting concave portion 27 of the slider body 20 and the fitting convex portion 47 of the end cap 40 can be avoided. Further, the fitting concave portion 27 of the slider body 20 and the fitting convex portion 47 of the end cap 40 can be eliminated. Thereby, in the assembly of the linear motion guide device 10, damage to the slider body 20 and the end cap 40 can be avoided, and the cost of the linear motion guide device 10 can be reduced.

As described above, according to the assembling method of the linear motion guide device 10 according to this embodiment, it is possible to improve the impact resistance of the linear motion guide device 10.
In the above-described embodiment, the circulation path 31 including the raceway surface 12b of the guide rail 1 and the raceway surface 22b of the slider body 20 is described as an example. However, the raceway surface 12a of the guide rail 1 and the raceway surface of the slider body 20 are described. The same effect can be obtained in the circulation path 31 including 22a.
In the above-described embodiment, the case where the slider recess 20 is provided with the fitting concave portion 27 and the end cap 40 is provided with the fitting convex portion 47 is described. However, the fitting concave portion 27 is provided in the end cap 40 and is fitted. The protrusion 47 may be provided on the slider body 20.

Moreover, although the above-mentioned embodiment demonstrated the assembly method of the linear guide apparatus 10 using the ball 3 which consists of ceramics as a rolling element, this invention assembles the linear guide apparatus using a metal ball as a rolling element. Can be applied to the method. Further, the present invention can be applied to a method for assembling a linear motion guide device using a cylindrical roller as a rolling element.
Moreover, although the above-mentioned embodiment demonstrated the assembly method of the linear guide apparatus 10 using a metal end cap as the end cap 40, this invention is an assembly method of the linear guide apparatus using a resin end cap. Can be applied to.

  The present invention has been specifically described based on the above-described embodiment. However, the present invention is not limited to the above-described embodiment, and it is needless to say that various changes can be made without departing from the scope of the invention. .

DESCRIPTION OF SYMBOLS 1 ... Guide rail 10 ... Linear motion guide apparatus 11 ... Outer surface 11a ... Main surface part 11b ... Back surface part 11c, 11d ... Side surface part 12a, 12b ... Track surface 2 ... Slider 20 ... Slider main body 21a ... Trunk part 21b ... Leg part 22a, 22b ... raceway surface 25 ... mounting screw hole 26 ... mounting screw hole 27 ... fitting recess 3 ... ball (rolling element)
DESCRIPTION OF SYMBOLS 31 ... Circulation path 32 ... Rolling path 33 ... Return path 34 ... Direction change path 40 ... End cap 41a ... Body part 41c, 41d ... Leg part 43 ... Tongue part 43a ... Ball first contact location (rolling body first contact location)
45 ... Through hole 46 ... Through hole 47 ... Fitting convex part 50 ... Side seal 51a ... Body part 51c, 51d ... Leg part 57 ... Through hole 6 ... Positioning jig 6a ... Screw part 6b ... Insertion part 8,9 ... Screw Element

Claims (2)

A slider body having a raceway surface that forms a rolling passage of a rolling element with the raceway surface of the guide rail, and provided with a mounting screw hole on an end surface in a moving direction that moves along the longitudinal direction of the guide rail; An end provided with a rolling element first contact portion communicating with the raceway surface of the slider main body on the end surface facing the end surface in the moving direction of the slider main body, and a through hole provided at a position facing the mounting screw hole Preparing a cap and a rod-shaped positioning jig having a threaded portion to be attached to the mounting screw hole and an insertion portion to be inserted into the through hole;
Attaching the positioning jig to the slider body by screwing the screw portion of the positioning jig into the mounting screw hole of the slider body;
With the positioning jig fixed to the slider body, the insertion portion of the positioning jig is inserted into the through hole of the end cap, and the raceway surface of the slider body and the rolling element of the end cap are first inserted. Positioning the contact point;
Fixing the end cap to the slider body in a state where the raceway surface of the slider body and the rolling element first contact portion of the end cap are positioned,
A method for assembling a linear motion guide device, wherein the guide rail and the end cap can be easily positioned. Removing the positioning jig after fixing the end cap to the slider body;
The method for assembling the linear motion guide device according to claim 1, further comprising a step of attaching a side seal to the slider body via the end cap after removing the positioning jig.

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