JP3281157B2 - Track rail mounting structure for linear motion unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a track rail mounting structure for a linear motion unit which is slidable with a large number of rolling elements interposed on a track rail having a slider having a casing fixed to a mounting base.

[0002]

2. Description of the Related Art Conventionally, there is a linear motion rolling guide unit disclosed in Japanese Patent Application Laid-Open No. 5-138428. The linear motion rolling guide unit will be described with reference to FIGS. 10 is a partially broken perspective view showing an example of a conventional linear motion rolling guide unit, FIG. 11 is a front view of an end cap of the linear motion rolling guide unit of FIG. 10, and FIG. 12 is a linear motion rolling guide of FIG. It is sectional drawing of the attachment part of the track rail of a unit, and an attachment base.

In the linear motion rolling guide unit, a track groove 4 is formed on both longitudinal side walls 3 of a track rail 2.
The slider 1 is laid on the track rail 2 so as to be able to reciprocate. The track rail 2 has a plurality of mounting holes 15 spaced apart in the longitudinal direction. The track rail 2 is a mounting base 20 for a bed, a machine stand, a processing stand, and the like.
It is fixed to. A bolt 16 is inserted into a mounting hole 15 formed in the track rail 2 and the bolt 16
Is screwed into a screw 21 formed on the mounting base 20, whereby the track rail 2 is fixed to the mounting base 20. An embedding plug 13 is fitted into the upper part of the mounting hole 15 so that dust, moisture and the like do not enter after the bolt 16 is inserted.

The slider 1 is relatively movable with respect to the track rail 2 and each track groove 4 of the track rail 2
A casing 5 having a raceway groove 9 at a position facing the raceway 5, a plurality of rolling elements 7 such as balls rolling in the raceway grooves 4, 9 and end caps 6 attached to both ends of the casing 5, respectively. ing. A plurality of screw holes 19 for mounting a slide table (not shown) are formed in an upper part of the casing 5. Rail insertion recesses 10 are respectively formed on the lower surfaces of the casing 5 and the end cap 6 such that the casing 5 and the end cap 6 move across the track rail 2. Further, in order to prevent the rolling elements 7 from falling off from the casing 5, a holding band 18 is attached to the casing 5 so as to surround the many rolling elements 7, and a seal between the track rail 2 and the lower end of the casing 5 is formed. To achieve this, a lower seal 8 is attached to the lower surface of the slider 1.

The end cap 6 has a raceway groove 22 in which the rolling element 7 forms a sliding surface with the track rail 2 and a direction change path 11 for turning the rolling element 7 for circulation of the rolling element 7. Are formed on both sides. The end cap 6 is provided with a side seal 17 for sealing between the track rail 2 and both ends of the slider 1 in the longitudinal direction.
A grease nipple 23 for supplying a lubricant is mounted on the sliding surface therebetween. The end cap 6 is attached to both end surfaces of the casing 5 by screws 25 and the like penetrating through the plurality of attachment holes 24.

The linear motion rolling guide unit is configured as described above, and is mounted with the slider 1 straddling the track rail 2 and circulating along the track groove 4 of the track rail 2. It slides freely with the interposition of the moving body 7. The rolling elements 7 in the load area running on the track groove 4 of the track rail 2 are guided to a direction change path 11 formed in the end cap 6, and are then formed on the upper part of the casing 5 in parallel with the track groove 9. To the return passage hole 12
A large number of rolling elements 7 endlessly circulate in an infinite circulation path. As described above, the rolling of the loaded rolling element 7 located between the raceway groove 9 formed on the slider 1 and the raceway groove 4 formed on the track rail 2 causes the track rail 2 and the slider 1 to move relative to each other. I can exercise.

[0007]

The above-described conventional linear motion rolling guide unit is for moving relatively heavy devices back and forth with high precision over a relatively long distance. However, in a small linear motion rolling guide unit for moving small and light-weight devices back and forth, the track rail 2 has a width of about 5 mm.
Is M2 or less (screw diameter 2 mm or less). In such situations, bolts and screws 1
6 is troublesome, and since the mounting holes 15 for inserting the bolts and screws 16 into the track rail 2 are formed, the strength of the track rail 2 also becomes a problem.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problem, and is applied to a small linear motion unit in which it is difficult or undesirable to form a mounting hole for inserting a bolt or the like into a track rail. It is not necessary to form a mounting hole in the track rail, the track rail can be firmly mounted on the mounting base, and it is preferable to apply to a thin and short track rail.
Without warping or bending of the track rail,
An object of the present invention is to provide a track rail mounting structure in a linear motion unit capable of fixing a track rail to a mounting base by utilizing spaces at both ends of the track rail.

[0009]

SUMMARY OF THE INVENTION The present invention relates to a track rail having track grooves formed on both side walls in the longitudinal direction, a casing having track grooves opposed to the track grooves, and a rolling element rolling between the track grooves. And a linear motion unit having a slider that relatively moves across the track rail and a mounting base to which the track rail is fixed.
The track rail includes a mounting member provided with a mounting portion which is disposed opposite to both ends in the longitudinal direction of the track rail and has a mounting hole for fixing to the mounting base, wherein the mounting member includes the track rail. A second engaging portion that engages with a first engaging portion formed at both ends in the longitudinal direction of
The second engaging portion provided on the mounting member is a first projecting portion provided on an upper portion, and the first engaging portion formed on the track rail is fitted with the first projecting portion. A first fitting groove having a cut upper surface, wherein the first protruding portion of the second engaging portion is fitted in the first fitting groove of the first engaging portion, and A track rail mounting structure in a linear motion unit, wherein the track rail is fixed to the mounting base by inserting a screw into a mounting hole and screwing into a screw hole formed in the mounting base, respectively. .

The present invention also provides a track rail having track grooves formed on both side walls in the longitudinal direction, a casing having track grooves opposed to the track grooves, and a rolling element rolling between the track grooves. In a linear motion unit having a slider that moves relatively over a track rail and a mounting base to which the track rail is fixed, the slider is disposed opposite to both longitudinal ends of the track rail and fixed to the mounting base. And a second engaging member which engages with first engaging portions formed at both ends in the longitudinal direction of the track rail. A mating portion is provided, the first engaging portion formed on the track rail is a second projecting portion projecting from an end of the track rail, and the first engaging portion is provided on the mounting member. The second engaging portion is a second fitting groove into which the second protruding portion of the track rail is fitted, and the second protruding portion is fitted into the second fitting groove so that the mounting member has The present invention relates to a track rail mounting structure for a linear motion unit, wherein the track rail is fixed to the mounting base by inserting a screw into a mounting hole and screwing into a screw hole formed in the mounting base.

The present invention also provides a track rail having track grooves formed on both side walls in the longitudinal direction, a casing having track grooves opposed to the track grooves, and a rolling element rolling between the track grooves. In a linear motion unit having a slider that moves relatively over a track rail and a mounting base to which the track rail is fixed, the slider is disposed opposite to both longitudinal ends of the track rail and fixed to the mounting base. And a second engaging member which engages with first engaging portions formed at both ends in the longitudinal direction of the track rail. A mating portion is provided, and a contact surface of the first engagement portion formed on the track rail and a contact surface of the second engagement portion provided on the mounting member are formed on inclined surfaces that contact each other. Made is, the said second engagement portion first
The track rail is attached to the mounting rail by engaging the abutting surfaces with an engaging portion with each other and inserting a screw into the mounting hole of the mounting member and screwing into a screw hole formed in the mounting base. The present invention relates to a track rail mounting structure for a linear motion unit fixed to a base.

The present invention also provides a track rail having a track groove formed on both side walls in the longitudinal direction, a casing having a track groove opposed to the track groove, and a rolling element rolling between the track grooves. In a linear motion unit having a slider that moves relatively over a track rail and a mounting base to which the track rail is fixed, the slider is disposed opposite to both longitudinal ends of the track rail and fixed to the mounting base. And a second engaging member which engages with first engaging portions formed at both ends in the longitudinal direction of the track rail. A mating portion is provided, the second engaging portion provided on the mounting member is constituted by a pressing member separate from the mounting member, and the pressing member is formed by a preload means for applying a preload. Pressing engagement engaged with the first engagement portion Te,
A track in a linear motion unit, wherein the track rail is fixed to the mounting base by inserting a screw into the mounting hole of the mounting member and screwing into a screw hole formed in the mounting base. The present invention relates to a rail mounting structure. Further, the preload means includes a spring for urging the pressing member with a spring force and an adjusting screw for adjusting the spring force of the spring.

Since the track rail mounting structure of this linear motion unit is configured as described above, both ends of the track rail are fixed by mounting members provided on a mounting base. When the track is small, there is no need to form a small mounting hole for inserting a bolt or screw into the track rail, and it is not necessary to use a small screw having a screw specification of M2 or less (screw diameter of 2 mm or less). A rail can be firmly fixed to the mounting base, and the strength of the track rail is not reduced. Further, since the track rail is fixed to the mounting base by a mounting member, both ends of the track rail can be set at optimum positions, and furthermore, a space is formed such that the mounting base does not exist below the track rail. If the mounting bases are present at both ends of the track rail, the track rails can be fixed to the mounting base even in a place where the vehicle is located. In addition, the track rail mounting structure in this linear motion unit is preferable when applied to a relatively short track rail in consideration of the warpage or bending generated in the track rail.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a track rail mounting structure in a linear motion unit according to the present invention will be described below with reference to the drawings. When each embodiment of the track rail mounting structure in this linear motion unit is described with reference to each drawing, in each drawing for describing each embodiment, FIG.
12 to FIG. 12 basically have parts corresponding to those of the conventional linear motion rolling guide unit, and the parts corresponding to the parts shown in FIG. 10 to FIG. .

First, an embodiment of a track rail mounting structure in a linear motion unit according to the present invention will be described with reference to FIGS. FIG. 1 is a side view showing an embodiment of a track rail mounting structure in a linear motion unit according to the present invention, and FIG. 2 is an exploded perspective view showing a track rail mounting structure in the linear motion unit of FIG.

In the track rail mounting structure of the linear motion unit, the slider 1 is straddled on the track rail 2 fixed to the mounting base 20 in the same manner as the conventional linear motion rolling guide unit. Reciprocate to. The track rail 2 has a track groove 4 formed in a lower portion of both side walls 3 in the longitudinal direction. The slider 1 includes a casing 5 having a raceway groove 9 formed at a portion corresponding to a position facing the raceway groove 4, and a rolling element 7 rolling between the raceway groove 4 and the raceway groove 9. In order to fix the track rail 2 to the mounting base 20, mounting members 27 disposed opposite to both ends of the track rail 2 at locations where both ends of the track rail 2 are located are fixed to the mounting base 20. Is provided.

In particular, the track rail mounting structure is provided with a fitting groove 30 forming a first engaging portion formed at both longitudinal ends 34 of the track rail and a second engaging portion provided on the mounting member 27. It has a protruding part 28 constituting a part. The attachment member 27 can be made of synthetic resin or metal. Fitting groove 3 formed at the end of track rail 2
Reference numeral 0 denotes a triangular cross section in which the upper surface of the end is cut, and the bottom surface is formed as a tapered surface, that is, an inclined surface 31. Further, the mounting member 27 has mounting portions 29 on both side surfaces thereof, and mounting holes 33 are formed in the mounting portions 29. Mounting member 2
The lower surface of the protruding portion 28 constituting the second engaging portion provided on the tapered surface 7 is formed as a tapered surface, that is, an inclined surface 26.

In FIG. 1, the projection 28 is formed as a projection 28 having an upper surface 35 at the same height as the upper surface 14 of the track rail 2. However, the projection 28 need not always be at the same height. When the protrusion 28 provided on the mounting member 27 is fitted into the fitting groove 30 of the track rail 2 and the track rail 2 is fixed to the mounting base 20, the inclined surface 26 of the protrusion 28
Is in contact with the inclined surface 31 on the bottom surface of the fitting groove 30. Therefore, the track rail 2 is arranged at a predetermined position,
The mounting member 27 is arranged at both ends 34 of the track rail 2, the protrusion 28 is fitted into the fitting groove 30, the screw 32 is inserted into the mounting hole 33 of the mounting portion 29, and the screw hole 45 formed in the mounting base 20 is formed. , The track rail 2 can be fixed to the mounting base 20. In addition, if the length of the track rail 2 is properly selected, the mounting member 27 can be fixed at an optimum position of the mounting base 20.

FIG. 3 is a sectional view showing another embodiment of the track rail mounting structure in the linear motion unit. In this embodiment, one end 34 of the track rail 2 has the same mounting structure as the above embodiment, but the other end 3
The mounting structure 4 is provided with a preload means. The second engaging portion formed on the mounting member 36 is configured by a pressing member 37 separate from the mounting member 36. Pressing member 37
Is fitted into a fitting hole 39 formed in the mounting member 36,
It is pressed toward the end face of the track rail 2 by the spring 38 of the preload means disposed in the fitting hole 39. FIG.
In the embodiment, the preload means is provided at one end 34 of the track rail 2. However, in some cases, the preload means may be provided at both ends 34 of the track rail 2. The pressing member 37 can be made of metal,
In some cases, it can be made of an elastic material such as synthetic resin or metal.

FIG. 4 is a sectional view showing still another embodiment of the track rail mounting structure in the linear motion unit.
This embodiment has the same configuration as the embodiment shown in FIG. 3 except that the preload by the preload means is adjusted. That is, one end of the track rail 2 has the same mounting structure as the embodiment shown in FIG.
The mounting structure of the other end 34 is provided with a preload means. An attachment member 36A having a fitting hole 39 is used. The preload means is provided in a fitting hole 39 of the mounting member 36A and includes a spring 38 for urging the pressing member 37 with a spring force and an adjusting screw 40 for adjusting the spring force of the spring 38. In the mounting member 36A,
A screw 41 into which the adjusting screw 40 can be screwed is formed.
Accordingly, by pressing the adjusting screw 40 into the screw 41, the pressing force of the pressing member 37, that is, the preload is adjusted. FIG.
In the embodiment, the preload means is provided at one end 34 of the track rail 2. However, in some cases, the preload means may be provided at both ends 34 of the track rail 2.

FIG. 5 is a sectional view showing another embodiment of the track rail mounting structure in this linear motion unit. This embodiment has the same configuration as the embodiment shown in FIG. 1 except that the structures of the fitting groove formed on the track rail 2 and the protrusion formed on the mounting member are different. . This embodiment is different from the first embodiment in that a fitting groove 44 forming a first engaging portion formed on both ends 34 in the longitudinal direction of the track rail 2 and a projecting portion 43 forming a second engaging portion provided on the mounting member 42. Having. The fitting groove 44 formed at the end of the track rail 2 has the top surface 14 of the end cut into a square cross section. The mounting member 42 is provided with a mounting portion (the mounting portion 29 may be as shown in FIG. 1), and a mounting hole 33 is formed in the mounting portion. The protruding portion 43 constituting the second engaging portion provided on the mounting member 42 is formed in a rectangular cross section on the upper portion of the mounting member 42. In FIG. 5, the projection 43 is formed as the projection 43 having the upper surface 35 having the same height as the upper surface 14 of the track rail 2. In this embodiment, one end portion 34 of the track rail 2 is provided so that no gap is generated between the mounting member 42 and the track rail 2.
By adopting a mounting structure provided with preload means as shown in FIG. 3 or FIG. 4, the track rail 2 can be fixed to the mounting base 20 accurately and without backlash, which is preferable. . In this embodiment, similarly to the above embodiment, if the length of the track rail 2 is properly selected, the mounting member 42 can be fixed to the optimum position of the mounting base 20.

FIG. 6 is a sectional view showing still another embodiment of the track rail mounting structure in this linear motion unit.
This embodiment has the same configuration as the embodiment shown in FIG. 5 except that the positions of the fitting grooves formed on the track rail 2 and the protrusions formed on the mounting member are different. is there. In this embodiment, a protruding portion 46 forming a first engaging portion is formed at an end of the track rail 2, and the protruding portion 46 has a middle portion protruding in a square cross section.
The mounting member 47 is provided with a mounting portion (or the mounting portion 29 as shown in FIG. 1), and a mounting hole 33 is formed in the mounting portion. The fitting hole 48 forming the second engaging portion provided in the mounting member 47 is cut into a square shape in the middle of the mounting member 47. Also in this embodiment, a mounting structure in which a preload means as shown in FIG. 3 or FIG. 4 is provided at one end 34 of the track rail 2 so that no gap is generated between the mounting member 47 and the track rail 2. By adopting this, the track rail 2 can be fixed to the mounting base 20 accurately and without backlash, and if the length of the track rail 2 is properly selected, the optimum position of the mounting base 20 can be obtained. The mounting member 47 can be fixed.

FIG. 7 is a sectional view showing another embodiment of the track rail mounting structure in this linear motion unit. This embodiment has the same configuration as the embodiment shown in FIG. 6 except that the positions of the fitting grooves formed on the track rail 2 and the protrusions formed on the mounting member are different. is there. In this embodiment, a projecting portion 49 forming a first engaging portion is formed at the end of the track rail 2 and the projecting portion 4 is formed.
In 9, the lower surface of the end protrudes in a square cross section. The mounting member 50 is provided with a mounting portion 52 (or the mounting portion 29 as shown in FIG. 1), and the mounting portion 52 has a mounting hole 33 formed therein. A fitting hole 51 that forms a second engagement portion provided in the mounting member 50 is cut into a lower surface of the mounting member 50 in a rectangular cross section. In this embodiment, too, a mounting structure in which a preload means as shown in FIG. 3 or FIG. 4 is provided at one end 34 of the track rail 2 so that no gap is generated between the mounting member 50 and the track rail 2. By adopting this, the track rail 2 can be fixed to the mounting base 20 accurately and without backlash, and if the length of the track rail 2 is properly selected, the optimum position of the mounting base 20 can be obtained. The mounting member 50 can be fixed.

FIG. 8 is a cross-sectional view showing another embodiment of the track rail mounting structure in the linear motion unit, and FIG. 9 is a cross-sectional view of the track rail mounting structure in the linear motion unit of FIG. This embodiment has the same configuration as the embodiment shown in FIG. 7, except that the shape of the fitting groove formed on the track rail 2 and the shape of the protrusion formed on the mounting member are different. . In this embodiment, a projecting portion 53 constituting a first engaging portion is formed at an end of the track rail 2, and the end of the projecting portion 53 is cut off in a triangular cross section. The mounting member 55 is provided with a mounting portion (or the mounting portion 29 as shown in FIG. 1), and a mounting hole 33 is formed in the mounting portion. A fitting groove 56 that forms a second engaging portion provided on the mounting member 55 is cut into the lower surface of the mounting member 55 in a triangular cross section. The inclined surface 54 of the projecting portion 53 formed on the track rail 2 and the mounting member 55
And the inclined surface 57 of the fitting groove 56 constitute a contact surface that comes into contact with each other. Also in this embodiment, the mounting member 55
So that there is no gap between the track rail 2
The track rail 2 is fixed to the mounting base 20 accurately and without backlash by employing a mounting structure in which one end 34 of the track rail 2 is provided with preload means as shown in FIG. 3 or FIG. If the length of the track rail 2 is properly selected, the mounting member 55 can be fixed to an optimum position of the mounting base 20.

[0025]

Since the track rail mounting structure of the linear motion unit according to the present invention is constructed as described above, it is not necessary to form a small-diameter mounting hole through which bolts and screws are inserted in the track rail. There is no loss in rail strength. In particular, the present invention is preferably applied to a small linear motion unit in which it is difficult or undesirable to form a mounting hole for inserting a bolt or the like into a track rail, and to a thin and short track rail. Preferably, the track rail is not warped or bent, and the track rail can be firmly mounted on the mounting base by utilizing the space at both ends of the track rail.

In the track rail mounting structure of this linear motion unit, the first engaging portion is constituted by a pressing member separate from the mounting base, and the pressing member is provided with a second engaging member by a preload means for applying a preload. Since the track rail is pressed into engagement with the track rail, the track rail is reliably pressed against the mounting base by the spring force of the preload means even if the processing accuracy between the track rail and the mounting base is not so high. There is no play between the two. In some cases, the preload means can be constituted by a spring for urging the pressing member with a spring force and an adjusting screw capable of adjusting the spring force of the spring, so that the spring force of the pressing member on the track rail can be properly adjusted. Can be adjusted.

[Brief description of the drawings]

FIG. 1 is a side view showing one embodiment of a track rail mounting structure in a linear motion unit according to the present invention.

FIG. 2 is a perspective view showing an exploded state of a track rail and a mounting member showing a track rail mounting structure in the linear motion unit of FIG. 1;

FIG. 3 is a partial cross-sectional side view showing another embodiment of the track rail mounting structure in the linear motion unit.

FIG. 4 is a partial cross-sectional side view showing still another embodiment of the track rail mounting structure in the linear motion unit.

FIG. 5 is a partial perspective view showing another embodiment of the track rail mounting structure in the linear motion unit.

FIG. 6 is a partial perspective view showing still another embodiment of the track rail mounting structure in the linear motion unit.

FIG. 7 is a partial perspective view showing another embodiment of the track rail mounting structure in the linear motion unit.

FIG. 8 is a partial perspective view showing still another embodiment of the track rail mounting structure in the linear motion unit.

FIG. 9 is a sectional view showing a track rail mounting structure in the linear motion unit of FIG. 8;

FIG. 10 is a partially broken perspective view showing an example of a conventional linear motion rolling guide unit.

FIG. 11 is a front view of an end cap of the linear motion rolling guide unit of FIG. 10;

12 is a cross-sectional view of a mounting portion between the track rail and the mounting base of the linear motion rolling guide unit in FIG. 10;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Slider 2 Track rail 3 Longitudinal side wall surface 4, 9 Track groove 5 Casing 7 Rolling element 20 Mounting base 26, 31, 54, 57 Inclined surface 27, 36, 42, 47, 50, 55 Mounting member 28, 43, 46 , 49, 53 Projecting portion 29 Mounting portion 30, 44, 56 Fitting groove 34 End (end of track rail) 35 Upper surface 37 Pressing member 38 Spring 39, 48, 51 Fitting hole 40 Adjusting screw 41 Screw

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F16C 29/00-29/06

Claims (5)

(57) [Claims] 1. A track rail having track grooves formed on both side walls in the longitudinal direction, a casing having track grooves opposed to the track grooves, and a rolling element rolling between the track grooves, and straddling the track rail. the slider moves relative to the rack, and the linear motion unit having a mounting base fixed to said track rail, attached for fixing in the longitudinal direction at both end portions respectively are opposed to arranged and said mounting base of said track rail has a mounting member which example Bei a mounting portion hole is formed, a second engagement portion engaged with the first engagement portion formed in the longitudinal ends of said track rail is provided on the mounting member Provided on the mounting member.
The second engaging portion is a first projecting portion provided on an upper portion,
Also, the first engagement portion formed on the track rail
Is a first cut-out upper surface into which the first protrusion is fitted.
A fitting groove, wherein the first projecting portion of the second engaging portion is
The first engagement groove of the first engagement portion is fitted into the first engagement groove so as to be in front of the mounting member.
A screw was inserted into the mounting hole to form the mounting base.
A track rail mounting structure in a linear motion unit, wherein the track rail is fixed to the mounting base by screwing into the respective mounting holes . 2. A track having track grooves formed on both side walls in the longitudinal direction.
Rack rails and track grooves formed opposite the track grooves
A rolling element for rolling between the casing and the raceway groove;
Slidable relative to the track rail
And a mounting base to which the track rail is fixed.
Linear unit, the length of the track rail
The mounting brackets are provided opposite to each other at both ends in the direction.
A mounting part with a mounting hole for fixing to the base
A mounting member, and the mounting member has the track rail.
Engages with first engagement portions formed at both ends in the longitudinal direction of the
A second engaging portion is formed on the track rail.
The first engaging portion is formed from an end of the track rail.
A second projecting portion that projects, and is provided on the mounting member.
The second engagement portion is provided with the second engagement portion of the track rail.
A second fitting groove into which the protrusion is fitted;
The mounting hole of the mounting member is fitted in the second fitting groove.
Into the screw holes formed in the mounting base.
Rail mounting structure of the linear motion unit characterized in that the to Rukoto Re screwed respectively, the track rail is fixed to the mounting base. 3. A track having track grooves formed on both longitudinal side walls.
Rack rails and track grooves formed opposite the track grooves
A rolling element for rolling between the casing and the raceway groove;
Slidable relative to the track rail
And a mounting base to which the track rail is fixed.
Linear unit, the length of the track rail
The mounting brackets are provided opposite to each other at both ends in the direction.
A mounting part with a mounting hole for fixing to the base
A mounting member, and the mounting member has the track rail.
Engages with first engagement portions formed at both ends in the longitudinal direction of the
A second engaging portion is formed on the track rail.
The contact surface of the first engaging portion and the mounting member
Inclined surfaces that come into contact with the contact surface of the second engagement portion
Formed between the second engaging portion and the first engaging portion.
The contact surfaces are engaged with each other to fit in the mounting hole of the mounting member.
Insert a screw into the screw hole formed in the mounting base.
Each of the track rails is
Rail mounting structure of the linear motion unit you characterized in that it is fixed to the mounting base. 4. A track having track grooves formed on both longitudinal side walls.
Rack rails and track grooves formed opposite the track grooves
A rolling element for rolling between the casing and the raceway groove;
Slidable relative to the track rail
And a mounting base to which the track rail is fixed.
Linear unit, the length of the track rail
The mounting brackets are provided opposite to each other at both ends in the direction.
A mounting part with a mounting hole for fixing to the base
A mounting member, and the mounting member has the track rail.
Engages with first engagement portions formed at both ends in the longitudinal direction of the
The second engagement portion is provided to said second engagement portion provided on the mounting member is composed of a pressing member separate from the pre-Symbol mounting member, also the pressing member provides the preload preload It is pressed against engagement with the first engaging portion by means of said mounting member
A screw was inserted into the mounting hole to form the mounting base
By screwing into each of the screw holes, the track
It characterized in that the rail is fixed to the mounting base
Rail mounting structure of the linear motion unit. 5. The straightening device according to claim 4 , wherein said preload means comprises a spring for urging the pressing member with a spring force and an adjusting screw for adjusting the spring force of the spring. Track rail mounting structure for moving unit.