JP2005249113A - Linear guide device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a linear guide device capable of straightening a track rail even when it is curved with a simple structure without forming a mounting hole on the track rail, and mounting the track rail on a rail fixing member such as a base. <P>SOLUTION: In this linear guide device composed of the track rail 1 mounted on the base 2 and a slide member 6 assembled in the track rail 1 and movable along the longitudinal direction of the track rail 1, male screws 15, 15 projecting to both ends of the track rail 1 are mounted through through holes 3a, 3a formed on supports 3, 3, the supports 3, 3 are fixed to the base 2 by bolts 17 to mount the supports, nuts 16, 16 are engaged with the male screws 15, 15 and fastened, and the tensile force is applied to the track rail 1 to fasten both ends of the track rail 1 to the supports 3, 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a linear guide device having a configuration in which a track rail mounted on a rail fixing member such as a base and a slide member are provided, and the slide member is assembled to the track rail so as to be movable along the longitudinal direction thereof. The present invention relates to a linear guide device characterized by a track rail mounting structure of a small linear guide device with small dimensions of the track rail and slide member.

  Conventionally, as this type of guide device, as shown in FIG. 9, a device in which a track rail 101 and a slide member 102 are assembled so as to be relatively movable via a ball 100 as a rolling element is known. Specifically, a plurality of ball rolling grooves 103 are formed along the longitudinal direction, and a track rail 101 having a substantially rectangular cross section perpendicular to the longitudinal direction is formed on the top of the track rail 101. A slide member which has a recess for loose fitting, is formed in a substantially saddle shape in cross section, and is assembled to the track rail 101 via a large number of balls 100 that circulate infinitely, and is movable along the longitudinal direction of the track rail 101 102, the track rail is disposed on a fixed portion such as a bed, and the movable member can be freely moved along the track rail on the fixed portion by attaching a movable member such as a table to the slide member 102. To guide you. In some cases, the track rail 101 is attached to the movable body, and the slide member 102 is attached to the fixed portion.

  In general, in this type of linear guide device, for mounting the track rail 101, mounting holes 104 penetrating from the upper surface to the lower surface of the track rail 101 are provided at predetermined intervals, and mounting bolts or An attachment structure is adopted in which the screws are attached to a rail fixing member such as a bed through screws.

  As described above, the mounting structure in which mounting holes are provided in the track rail and fixed through bolts and screws is not a problem when the track rail has a large width dimension, but the track rail width is small (for example, the width dimension is several). In the mounting structure in which mounting holes are provided in the track rail and fixed with bolts or screws, it is difficult to drill holes for mounting without distorting the track rail. There is a problem that the track rail cannot be easily and accurately attached or is extremely difficult.

  In addition, there is one described in Patent Document 1 as a mounting structure of the track rail when the width dimension of the track rail is small as described above. In this track rail mounting structure, the track rail has mounting members disposed opposite to both ends of the track rail in the longitudinal direction, the mounting members are engaged with both ends of the track rail, and the mounting members are further mounted on the base. The track rail is fixed to the base. The track rail mounting structure described in Patent Document 1 is such that both ends of the track rail are fixed to the base via mounting members without providing a mounting hole in the track rail. The structure of the engaging portions of the mounting members and the both ends of the mounting member is complicated, and it is difficult to perform processing for engaging the ends and mounting members of the track rail with a small width dimension, and the track rail is bent. In this case, there is a problem that the base is fixed in a bent state.

The present invention has been made in view of the above points, and can be corrected even when the track rail is bent without providing a mounting hole in the track rail with a simple structure. It aims at providing the linear guide apparatus which can be attached to a rail fixing member.
Japanese Patent Laid-Open No. 7-190054

  In order to solve the above-mentioned problem, the invention according to claim 1 is a linear guide device comprising a track rail and a slide member assembled to the track rail and movable along the longitudinal direction of the track rail. A pair of supports are provided at intervals equal to or greater than the length of the rail, and both ends of the track rail are fastened to each of the supports with fastening means by applying tension to the track rail.

  According to a second aspect of the present invention, in the linear guide device according to the first aspect, the fastening means includes a male screw projecting at both ends of the track rail and a nut, and the male screw is inserted into a through hole formed in the support. It is characterized in that both ends of the track rail are fastened to the support body by penetrating them and screwing and tightening nuts to the male screws.

  According to a third aspect of the present invention, in the linear guide device according to the first aspect, the fastening means includes a female screw hole formed at both ends of the track rail, and a bolt having a male screw screwed into the female screw hole. Then, the bolt is passed through a through hole formed in the support, and the male screw is screwed into the female screw hole at both ends of the track rail and tightened to fasten the both ends of the track rail to the support.

  According to a fourth aspect of the present invention, in the linear guide device according to any one of the first to third aspects, the support member abuts on an upper end portion of the track rail, and a nut or a bolt is closed to the track rail. A taper surface that presses the track rail against the rail fixing member by applying tension is formed.

  According to a fifth aspect of the present invention, in the linear guide device according to any one of the first to fourth aspects, the raceway rail has a rolling element transfer surface formed in a longitudinal direction, and the slide member is the rolling element. It is characterized in that it is assembled to the track rail via a rolling element train that rolls on the transfer surface and infinitely circulates.

  According to a sixth aspect of the present invention, in the linear guide device according to any one of the first to fifth aspects, the support is mounted on a rail fixing member that fixes the track rail.

  According to the first aspect of the present invention, since both ends of the track rail are fastened to the support body by applying tension to the track rail by the fastening means, the track rail is fastened to the support body in a state where the tension is applied. As a result, even if the track rail is bent, it is corrected, so that it can be attached with high straightness, accuracy and stability. In particular, it is suitable for mounting an ultra-compact track rail having an extremely small width dimension.

  According to the second aspect of the present invention, the male screws projecting at both ends of the track rail are passed through the through holes of the support body, the nuts are screwed into the male screws and tightened, and both ends of the track rail are fastened to the support body. The track rail can be attached to the rail fixing member via the support body with a tension applied to the track rail with a simple fastening means.

  According to the invention described in claim 3, the both ends of the track rail are fastened to the support by screwing the male screws of the bolts penetrated into the through holes of the support into the female screw holes formed at both ends of the track rail. Therefore, the track rail can be attached to the rail fixing member via the support member with a simple structure by applying tension to the track rail with a simple fastening means.

  According to the fourth aspect of the present invention, the support body is formed with the tapered surface that presses the track rail against the rail fixing member by applying tension to the track rail by the fastening means. The member can be fixed by being pressed and adhered to the member, and the track rail can be attached to the rail fixing member more firmly and stably.

  According to the invention described in claim 5, since the slide member is assembled to the track rail via the rolling element row that rolls on the rolling element transfer surface provided on the track rail and infinitely circulates, It is possible to smoothly move on the track rail attached with high straightness and accuracy on the rail fixing member, and it is possible to provide a guide device having excellent performance as an ultra-compact linear guide device having a particularly small width dimension.

  According to the invention described in claim 6, since the support body is mounted on the rail fixing member for fixing the track rail, the track rail is highly straight and accurate and stable in a tensioned state. It can be mounted on the rail fixing member in a state. In particular, it is suitable for mounting a very small track rail having a very small width dimension on a rail fixing member such as a base.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 3 are views showing a configuration example of a linear guide device according to the present invention. FIG. 1 is an exploded perspective view showing the entire configuration of the linear guide device. FIG. 2 is a front view of the linear guide device. 3 is a cross-sectional view taken along arrow AA in FIG. As shown in the figure, reference numeral 1 denotes a track rail, and the track rail 1 is not less than the length of the track rail 1 on a base 2 which is a rail fixing member as described in detail later (a size slightly exceeding the length of the track rail 1). ) And a pair of supports 3, 3 provided at intervals, and both ends thereof are fastened by applying tension to the track rail 1 via fastening means 4, 4.

  The track rail 1 has a substantially rectangular cross section and is formed with rolling element rolling grooves 5 and 5 as rolling element rolling surfaces along the longitudinal direction on both sides thereof. Reference numeral 6 denotes a slide member that is assembled to the track rail 1 and is movable along the longitudinal direction of the track rail 1. The slide member 6 includes a block main body 7 having an attachment surface 7a for attaching a movable body (or fixed body) (not shown) such as a table, and a pair of end plates fixed to both front and rear end faces of the block main body 7. 8 and 8, and a recess 9 into which the track rail 1 is loosely fitted is provided on the lower surface side and is formed in a substantially saddle shape in cross section. The mounting surface 7a is formed with a tap hole 10 into which a fixing bolt (not shown) penetrating the movable body is screwed. As shown in FIG. 3, the block body 7 includes a base portion 7b on which a mounting surface 7a is formed and a pair of skirt portions 7c, 7c depending from both ends of the base portion 7b. On the inner side surfaces of the skirt portions 7c and 7c, there are formed load rolling grooves 12 which are load rolling surfaces on which balls 11 as rolling elements roll.

  Further, ball return holes 13 corresponding to the load rolling grooves 12 are formed in the skirt portion 7c, respectively, and these ball return holes 13 are formed in a substantially U-shaped direction changing path formed in the end plate 8 (see FIG. (Not shown) is connected to the load rolling groove 12 in communication. That is, this direction change path scoops up the ball 11 that has finished rolling in the load rolling groove 12 of the block body 7 at the scooping portion 8a provided on the inner side of the end plate 8 and sends it to the ball return hole 13, while this The ball 11 is sent out from the ball return hole 13 to the load rolling groove 12. Therefore, by fixing these end plates 8 to the front and rear end faces of the block body 7 using the mounting bolts 14, an infinite circulation path for the balls 11 as rolling elements is formed in the slide member 6. Yes.

  The rolling element rolling groove 5 of the track rail 1 faces the load rolling groove 12 of the block body 7 of the slide member 6. The ball 11 rolls while applying a load between the load rolling groove 12 and the rolling element rolling groove 5 of the track rail 1, whereby the slide member 6 moves on the track rail 1. In other words, the slide member 6 is assembled to the track rail 1 via a row of balls 11 that endlessly circulates through the endless circulation path. The base 2 as the rail fixing member may be a fixed body or a movable body.

  The fastening means 4 for fastening both ends of the track rail 1 to the support 3 includes a male screw 15 and a nut 16 protruding from both ends of the track rail 1. The support 3 has a structure in which a through hole 3a through which the male screw 15 passes is formed at the center, and through holes 3b through which the support mounting bolts 17 pass are formed on both sides. The male screws 15, 15 projecting from both ends of the track rail 1 are passed through the through holes 3 a of the supports 3, 3, and the supports 3, 3 are arranged at both ends of the track rail 1. The support body mounting bolts 17 and 17 are inserted into the through holes 3b and 3b, and screw portions 17a of the support body mounting bolts 17 are screwed and tightened into screw holes (not shown) formed in the base 2. The bodies 3 and 3 are fixed on the base 2. Thereafter, the nuts 16 and 16 are screwed and tightened to the male screws 15 and 15 projecting from both ends of the track rail 1, thereby fastening the both ends of the track rail 1 to the supports 3 and 3.

  At this time, by tightening the nuts 16 and 16, a strong tension is applied to the track rail 1, and even when the track rail 1 is bent, the bending is corrected. 2 can be attached. In particular, it is suitable for mounting an ultra-compact track rail 1 having an extremely small width dimension. In addition, since a strong tension is applied to the track rail 1, the track rail 1 is restored to its original position even when the track rail 1 is displaced.

  4 and 5 are diagrams showing another configuration example of the linear guide device according to the present invention, FIG. 4 is a diagram showing a fastening means of the track rail 1 of the linear guide device, and FIG. It is a front view. In the present embodiment, as shown in FIG. 4, the fastening means 4 includes a female screw hole 18 formed at both ends of the track rail 1 and a bolt 19 having a male screw 19 a that is screwed into the female screw hole 18. Then, as shown in FIG. 5, the track rail 1 is disposed between the supports 3 and 3 fixed on the base 2 at a predetermined interval (a size slightly larger than the length of the track rail 1), and the bolt 19 Is passed through the through holes 3a and 3a of the support bodies 3 and 3 positioned at both ends of the track rail 1, and the male screw 19a is screwed into the female screw hole 18 and tightened to fix the both ends of the track rail 1 to the support bodies 3 and 3 To conclude.

  At this time, by tightening the bolts 19 and 19, a strong tension is applied to the track rail 1, and even when the track rail 1 is bent, the bend is corrected. Therefore, the track rail 1 is attached with high straightness and high accuracy. be able to. In particular, it is suitable for mounting an ultra-compact track rail 1 having an extremely small width dimension. In addition, since a strong tension is applied to the track rail 1, the track rail 1 is restored to its original position even when the track rail 1 is displaced.

  FIG. 6 is a front view showing another configuration example of the linear guide device according to the present invention. In this embodiment, protrusions 3d having a tapered surface 3c that contacts the upper end of the track rail 1 are provided on the side surfaces of the supports 3 and 3 positioned at both ends of the track rail 1 on the track rail 1 side. Flat portions 1a are formed at portions where the tapered surfaces 3c and 3c at both upper ends of the rail 1 abut. By providing the protrusions 3d having the tapered surfaces 3c as described above on the supports 3 and 3 positioned at both ends of the track rail 1, the male screws 15 and nuts 16 protruding from both ends of the track rail 1 are screwed. When tightening and applying tension to the track rail 1, both ends of the track rail 1 are pressed by the tapered surfaces 3c and 3c, and receive a downward force, that is, a force pressing the track rail 1 against the upper surface of the base 2. Thereby, the track rail 1 is attached to the base 2 more stably and firmly.

  In this case, the through hole 3b through which the support body mounting bolt 17 of the support body 3 passes is formed in an oval shape as shown in FIG. 7, and the support body 3 is temporarily fixed on the base 2 with the support body mounting bolt 17. (Fixed with a weak tightening force), and then, a nut 16 is screwed onto the male screw 15 projecting from both ends of the track rail 1 so that a sufficient tightening tension is applied, and the track rail 1 is mounted on the upper surface of the base 2. In this state, the support 3 may be permanently fixed on the base 2 (the support mounting bolts 17 are strongly tightened to fix the support 3 to the base 2).

  The support 3 having the projecting portion 3d having the tapered surface 3c is used not only in the case of the fastening means 4 in which the male screws 15 project from both ends of the track rail 1, but also as shown in FIG. This is also possible in the case of the fastening means 4 in which the female screw holes 18 are formed at both ends. That is, as shown in FIG. 8, the bolts 19 and 19 are respectively passed through the through holes 3a and 3a of the supports 3 and 3 positioned at both ends of the track rail 1, and the male screw 19a is screwed into the female screw hole 18 and tightened. As a result, tension is applied to the track rail 1 and a force for pressing the track rail 1 against the upper surface of the base 2 is applied, and both ends of the track rail 1 are fastened to the supports 3 and 3.

  In the above embodiment, the example in which the slide member 6 is assembled to the track rail 1 via the row of balls 11 which are rolling elements that endlessly circulate in the infinite circulation path is shown, but the rolling elements are not limited to balls. A roller, that is, a cylindrical body may be used. Further, a linear guide device having a configuration in which the slide member 6 slides along the track rail 1 without interposing rolling elements between the track rail 1 and the slide member 6 may be used. Further, in each of the above embodiments, one of the supports 3 and 3 may be formed integrally with the base 2 and the other may be a separate part from the base 2 and attached to the base 2 with the support mounting bolts 17. .

  In the above-described embodiment, the fastening means 4 has a structure in which the male screws 15 and 15 are protruded from both ends of the track rail 1 and tightened with the nuts 16, and female screw holes 18 and 18 are formed at both ends of the track rail 1 to form bolts 19. However, the fastening means 4 is not limited to this, and the fastening means 4 can be attached to the rail fixing member 2 via a support body by applying tension to the track rail 1. If it is. For example, both ends of the track rail 1 may be clamped, and the track rail 1 may be tensioned and fastened to the support.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible.

It is a disassembled external appearance perspective view of the linear guide apparatus which concerns on this invention. (Example 1) It is a front view of the linear guide apparatus which concerns on this invention. (Example 1) It is AA arrow sectional drawing of FIG. (Example 1) It is a figure which shows the fastening means of the track rail of the linear guide apparatus which concerns on this invention. (Example 2) It is a front view of the linear guide apparatus which concerns on this invention. (Example 2) It is a front view of the linear guide apparatus which concerns on this invention. Example 3 It is a top view which shows the support body of the linear guide apparatus which concerns on this invention. Example 3 It is a front view of the linear guide apparatus which concerns on this invention. (Example 4) It is an external appearance perspective view of the conventional linear guide apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Track rail 2 Base 3 Support body 4 Fastening means 5 Rolling body rolling groove 6 Slide member 7 Block main body 8 End plate 9 Recess 10 Tap hole 11 Ball 12 Load rolling groove 13 Ball return hole 14 Mounting bolt 15 Male screw 16 Nut 17 Support mounting bolt 18 Female thread 19 Bolt

Claims (6)

In a linear guide device comprising a track rail and a slide member assembled to the track rail and movable along the longitudinal direction of the track rail,
A pair of supports are provided with an interval equal to or greater than the length of the track rail, and both ends of the track rail are fastened to each of the supports by applying tension to the track rail with fastening means. A linear guide device. The linear guide device according to claim 1,
The fastening means includes a male screw projecting from both ends of the track rail, and a nut. The male screw is passed through a through hole formed in the support, and the nut is screwed into the male screw and tightened. A linear guide device, wherein both ends of a rail are fastened to the support. The linear guide device according to claim 1,
The fastening means includes a female screw hole formed at both ends of the track rail and a bolt having a male screw screwed into the female screw hole, and the male screw is made to penetrate the through hole formed in the support body. The linear guide device is characterized in that the both ends of the track rail are fastened to the support by being screwed into the female screw holes at both ends of the track rail and tightened. The linear guide device according to any one of claims 1 to 3,
The support body is formed with a tapered surface that abuts the upper end of the track rail and presses the track rail against the rail fixing member by tightening the nut or the bolt and applying tension to the track rail. A linear guide device characterized by that. In the linear guide device according to any one of claims 1 to 4,
A rolling element transfer surface is formed in the track rail in the longitudinal direction, and the slide member is assembled to the track rail via a rolling element row that rolls on the rolling element transfer surface and infinitely circulates. A linear guide device characterized by the above. In the linear guide apparatus of any one of Claims 1 thru | or 5,
The linear guide device according to claim 1, wherein the support is mounted on a rail fixing member that fixes the track rail.

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