JP3379879B2 - Curve guide device and manufacturing method thereof - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curved guide device and a method for manufacturing the curved guide device, and more particularly to a curved track rail formed by bending a predetermined curvature in a vertical direction and a slide that slides along the curved track rail. The present invention relates to a curve guide device including a moving table and a method for manufacturing the curve guide device.

[0002]

2. Description of the Related Art Pendulum type railway vehicles, various measuring devices,
Machine tools, various robots, and the like may require a so-called vertical arc motion that moves on an orbit formed in an arc shape with a predetermined curvature in the vertical direction.
In this case, conventionally, rollers, wheels and the like are rolled on an arcuate rail.

However, the above-mentioned method has a drawback in that the rail or the roller or the wheel has a rattling or a clearance due to vibrations or the like, which makes it impossible to accurately guide the circular arc movement.

As a device capable of accurately guiding an arc motion, a track rail having a ball rolling groove and an infinite ball circulation path slidably supported on the track rail via a large number of balls are formed. There is a curved guide device provided with the sliding base. This curvilinear guide device is usually used to guide an arc motion in a horizontal plane,
If this curved guide device is used in a state of being rotated by 90 °, it is possible to guide an arc motion in a vertical plane.

FIG. 20 is a perspective view showing an example of guiding an arc motion in a vertical plane using the above-mentioned curved guide device.
The curved guide device includes a track rail 51 and a slide base 61 that is slidably supported on the track rail 51 via balls 52 and forms an infinite ball circulation path. The track rail 51 is fixed to a vertical support surface 55 by a plurality of bolts 56. The track rail 51 has a substantially rectangular cross section and is formed in an arc shape with a predetermined curvature in the vertical direction.
As shown in FIG. 21 (cross-sectional view taken along the line XXI-XXI of FIG. 20), ball rolling grooves 59, 59 are formed in the longitudinal direction on the upper surface 57 on the center side of the arc and the lower surface 58 facing the upper surface 57. ing. The ball rolling grooves 59, 59 are configured so that the balls can roll in rows.

A slide base 61 fitted to the track rail 51
21, has upper and lower sleeve portions 62 and 63 and a connecting portion 64 that connects the sleeve portions 62 and 63, and is formed in a substantially U-shaped cross section. The sleeve portions 62, 63 are formed with ball rolling grooves 65, 65 on the inner surface thereof for sandwiching a large number of balls 52 with the ball rolling grooves 59, 59 of the track rail 51. In addition, the ball rolling groove 65 is provided on the sliding base 61.
An unloaded ball hole 67 corresponding to is formed.

Further, as shown in FIG. 20, a pair of side lids 68, 68 are attached to the front and rear ends of the sliding base 61 in the moving direction, and these side lids 68, 68 have ball rolling grooves. A ball direction changing passage is formed by connecting both ends of 65, 65 and both ends of the unloaded ball hole 67 to form an endless track. The plurality of balls 52 circulate in these endless tracks and slide. Rolling is performed while applying a load between the loaded ball rolling grooves 65, 65 of the base 61 and the ball rolling grooves 59, 59 of the track rail 51.

FIG. 22 is a perspective view showing a ball rolling groove 65 formed in the sleeve portion 62 of the sliding base 61. As shown in FIG. 22, the ball rolling groove 65 extends linearly in the longitudinal direction of the sliding base 61. The groove depth is formed in an arc shape in which both ends are shallow and the center is deep.

[0009]

Since the above-mentioned conventional curved guide device is constructed for the purpose of guiding the circular motion in the horizontal plane, the circular motion of the heavy object is guided in the vertical plane. Has the drawback of being unsuitable for If this is described in detail, the ball rolling grooves 59,
The track rail 51 having 59 is fixed to the vertical support surface 55 by a plurality of bolts 56, and as shown in FIG.
It is fixed to the side surface 61a of the slide base 61 fitted in 1.
That is, the heavy object 70 is supported in a cantilever state by the slide base 61 and the track rail 51. for that reason,
Due to the weight W of the heavy object 70, a large bending moment acts on the slide base 61 and the track rail 51.

When a large bending moment is applied to the slide base 61, this bending moment acts to separate the sleeve portions 62 and 63 from each other, so that the opposing pairs formed on the inner surfaces of the sleeve portions 62 and 63 are opposed to each other. There is a problem in that the distance between the formed ball rolling grooves 65, 65 changes and accurate arc movement cannot be guided. Further, the track rail 51 is fixed to the vertical support surface 55 by the bolts 56, but since a large bending moment acts on the track rail 51, the portion fixed to the track rail 51 by the bolts 56 and the vicinity thereof are the support surfaces. However, there is a problem in that the other portion does not adhere to the support surface 55 and swells to the left and right.
Therefore, when the slide base 61 slides along the track rail 51, there is a problem in that the slide base 61 is swayed to the left and right, and accurate arc movement cannot be guided.

In order to avoid this, as shown in FIG. 23, a pair of track rails 51, 51 are provided symmetrically, and a pair of slide bases 6 fitted to these track rails 51, 51, respectively.
There is proposed a curved guide device provided with 1, 61 and connecting the sliding bases 61, 61 with a mounting base 71 for mounting the heavy load 70.

In the curved guide device shown in FIG. 23, the bending moment generated by the load of the heavy object 70 can be shared by the two slides 61, 61 and the two track rails 51, 51. However, since the structure in which the load is applied to the slide base 61 and the track rail 51 from the side remains unchanged, depending on the weight of the heavy object 70,
Similar to the example shown in FIG. 21, there is a problem that the distance between the ball rolling grooves forming a pair of the sliding base changes and the track rail swells left and right. Further, in the curved guide device shown in FIG. 23, since the number of elements (parts) constituting the device is too large, the device becomes expensive, which is an obstacle to practical use. there were.

The present invention has been made in view of the above-mentioned circumstances, and by adopting a structure in which a bending moment is not generated in a slide base and a track rail due to the load of a load, a highly accurate vertical arc motion is achieved. It is an object of the present invention to provide a curved guide device and a manufacturing method for the same, which is capable of guiding the above and minimizes the number of elements (parts) constituting the device.

[0014]

In order to achieve the above-mentioned object, a curved guide device of the present invention is formed so as to be curved with a predetermined curvature in the vertical direction, the upper surface is concave or convex, and both left and right sides. > A curved track rail having a ball rolling groove formed along a side surface along an arc of a predetermined vertical curvature, and a lower surface having a horizontal portion and a pair of sleeve portions hanging downward from both sides thereof And a ball rolling groove formed along both sides of the sleeve along a circular arc having a predetermined vertical curvature at a position corresponding to the ball rolling groove of the track rail. And a slide base having an unloaded ball hole formed adjacent to each other, and attached to the front and rear end surfaces of the slide base, and between the end portions of the ball rolling groove and the unloaded ball hole on the inner surface side. A ball direction change passage that connects the two together to form an infinite ball circulation passage. And a plurality of balls that circulate in the ball infinite circulation passage and that apply a load between the ball rolling groove of the track rail and the ball rolling groove of the slide base. and opposed contact angle line connecting the contact point of the ball rolling groove which is set to 45 degree angle relative to the horizontal, and the curvature of the ball rolling grooves of the track rail
The ball rolling grooves of the slide base have the same curvature .

One aspect of the method for manufacturing a curved guide device according to the present invention is the method for manufacturing a curved guide device according to claim 1,
Ball rolling grooves of both sleeves of the sliding block, in a state of cut a grindstone predetermined depth, the sliding Dodai fixed, by the finish grinding is moved along the grinding wheel in an arc of a predetermined curvature It is characterized by being formed.

Another aspect of the method for manufacturing a curved guide device according to the present invention is the method for manufacturing a curved guide device according to claim 1, wherein the ball rolling grooves on both side surfaces of the curved track rail are:
The grinding wheel at a predetermined cut depth's state, secure the orbital rail
The grindstone is then moved along an arc of a predetermined curvature to finish the grinding.

According to the present invention, when a heavy object is mounted on the upper surface of the slide base, the weight of the heavy object acts vertically on the central portion of the slide base and track rail, and the weight of the slide base and track is increased. Since the ball rolling groove of the rail is evenly loaded, no bending moment acts on the slide base and track rail.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the curve guide device according to the present invention will be described below with reference to FIGS. 1 and 2 are views showing the overall configuration of a curved guide device of the present invention, FIG. 1 is a side view of the curved guide device, and FIG. 2 is a perspective view of the curved guide device. 3 is an enlarged view of a main part of FIG. 2, and FIG. 4 is FIG.
FIG. 4 is a sectional view taken along line IV-IV of FIG.

As shown in FIGS. 1 and 2, the curved guide device has a curved track rail 1 which is curved vertically with a predetermined curvature, and a curved track rail 1 which is curved with a predetermined curvature. From a support base 2 that supports the lower surface of the curved track rail 1 so that it can be maintained, and a slide base 3 that forms an infinite ball circulation path that is slidably supported on the curved track rail 1 via a number of balls 4. It is configured.

The curved track rail 1 has a substantially rectangular cross section and is formed in an arc shape with a predetermined curvature in the vertical direction. The curved track rail 1 has a center of curvature O in the vertical direction and a radius of curvature set to R, and the curved track rail 1 has an upper surface 1a concave and a lower surface 1b convex.

As shown in FIGS. 3 and 4, a pair of upper and lower ball rolling grooves 11 and 12 are formed on the left and right side surfaces 1c and 1d of the curved track rail 1 along an arc having a predetermined curvature. The slide base 3 has a horizontal portion 3a and a pair of left and right sleeve portions 3b, 3b hanging downward from both sides thereof, and has a recessed portion on the lower surface side. Then, both sleeve portions 3b of the slide base 3,
3b includes ball rolling grooves 11 of the curved track rail 1,
A pair of upper and lower ball rolling grooves 21, 22 are formed at a position corresponding to 12 along an arc (curvature radius R) having a predetermined curvature.

Further, on the slide base 3, a pair of upper and lower unloaded ball holes 2 are provided adjacent to the pair of upper and lower ball rolling grooves 21, 22 and corresponding to these ball rolling grooves 21, 22.
3, 24 are formed. As shown in FIG. 3, the ball rolling groove 2 is formed on the inner surface of each of the front and rear end surfaces of the slide base 3.
Side covers 5 and 5 having ball direction changing passages 13 which connect end portions of the unloaded ball holes 23 and 24 to each other to form an endless circulation passage are attached. And
The large number of balls 4 circulate in the respective endless circulation passages, and load is applied between the ball rolling grooves 11 and 12 of the curved track rail 1 and the ball rolling grooves 21 and 22 of the slide base 3. It is designed to roll. Further, as shown in FIG. 4, a pair of lower holding plates 6 a,
6a and the upper holding plate 6b are fixed,
The balls 4 are held on the slide base 3 by these holding plates 6a and 6b.

The ball rolling grooves 11, 12, 21, 22
The rolling surface of the ball is a circular groove formed into a curved surface with a radius larger than the ball radius.
1, 12, 21, 22 have only one contact surface with which the ball 4 makes contact rolling. The contact angle line connecting the ball 4 and the contact points of the ball rolling grooves 11, 21 or 12, 22 facing each other is set at an angle of 45 ° with respect to the horizontal line.

In this embodiment, when a heavy object 70 (shown by phantom lines) is mounted on the upper surface of the slide table 3 as shown in FIG. 4, the weight W of the heavy object 70 is the weight of the slide table 3 and the track. It acts on the central part of the rail 1 from the vertical direction, and also the ball rolling grooves 11, 12, 21, 22 of the slide base 3 and the track rail 1.
Load evenly on the slide table 3 and track rail 1
Bending moment does not act on.

Next, a method of manufacturing the curved guide device shown in FIGS. 1 to 4 will be described with reference to FIGS. FIG. 5 shows the upper and lower ball rolling grooves 2 formed on the slide base 3 of the present invention.
It is a perspective view which shows 1 and 22. Ball rolling grooves 21,22
Are formed in an arc shape with a predetermined curvature in the vertical direction, and these ball rolling grooves 21, 22 are convex downward.
The ball rolling grooves 21 and 22 have a center of curvature O located vertically above and a radius of curvature set to R. The depth of the ball rolling grooves 21, 22 is uniform along the longitudinal direction of the slide base 3. The ball rolling grooves 11 and 12 formed on both side surfaces 1c and 1d of the curved track rail 1 are also formed in an arc shape with a predetermined curvature (curvature radius R) in the vertical direction.

In the present invention, the method of grinding the ball rolling grooves formed on the slide base 3 and the curved track rail is characteristic as compared with the conventional method, so this grinding method will be described. In the following description of the manufacturing method, elements having the same function will be described using the same symbols.

FIG. 6 shows the ball rolling grooves 21 and 22 of the slide base 3.
It is explanatory drawing which shows an example of the grinding method. This example is a grinding method when the radius of curvature of the ball rolling grooves 21, 22 is large and the arc is close to a straight line. As shown in FIG.
The horizontal portion 3a of is fixed to the table 16 of the grinder. The grindstone 14 fixed to the tip of the grindstone shaft 13 is located in the recess of the slide base 3. The grindstone 14 moves up and down by NC control while the grindstone shaft 13 maintains a vertical state as the work (sliding table 3) or the grindstone 14 moves in a direction orthogonal to the plane of the drawing. In this case, the cutting direction of the grindstone 14 is horizontal.

FIG. 7 shows the ball rolling grooves 21 and 22 of the slide base 3.
7 (a) is a plan view, FIG. 7 (b) is a side view, and FIG. 7 (c) is a view showing the relationship between the grindstone and the ball rolling groove. is there. This example is a grinding method when the radius of curvature of the ball rolling grooves 21, 22 is small.

As shown in FIGS. 7 (a) and 7 (b), the grindstone 14 fixed to the tip of the grindstone shaft 13 has a sliding base 3
Located in the recess of. Then, as shown in FIG. 7C, the axis of the grindstone shaft 13 is always in the ball rolling grooves 21, 22.
NC of the inclination of the grindstone shaft 13 so that it goes to the center O of the arc
Control. Then, the movement of the grindstone 14 is NC controlled so that the grindstone 14 always moves on an arc having a predetermined curvature. In this case, the cutting direction of the grindstone 14 is horizontal. The smaller the diameter of the grindstone 14, the closer the ball rolling grooves 21, 22 can be to the set shape.

FIG. 8 shows the ball rolling grooves 21 and 22 of the slide base 3.
FIG. 8 is an explanatory view showing still another example of the grinding method of FIG.
FIG. 8A is a side view, and FIG. 8B is a view showing the relationship between the grindstone and the ball rolling groove. As shown in FIG. 8A, the slide base 3 is fixed to the XY table or the rotary table 16 using a jig 17. In the case of a turntable, table 1
6 is rotatable about the Y-Y axis. The grindstone 14 fixed to the tip of the grindstone shaft 13 is located in the recess of the slide base 3.

As shown in FIG. 8 (b), the slide base 3 rotates about the center O of the arc of the ball rolling grooves 21 and 22. In this case, the grindstone 14 is fixed, and the grindstone 14
The cutting direction of is vertical. A pair of ball rolling grooves 2 that oppose each other by reciprocally rotating the slide base 3
Grind 1 and 22.

FIG. 9 shows the ball rolling grooves 21, 2 of the slide base 3.
9 is an explanatory diagram showing still another example of the grinding method of FIG.
9A is a plan view, FIG. 9B is a side view, and FIG. 9C is a diagram showing a relationship between a grindstone and a ball rolling groove. In this example, the direction of the ball rolling groove is opposite to that of the example shown in FIG. 7, and the ball rolling groove is convex upward.

As shown in FIGS. 9 (a) and 9 (b), the grindstone 14 fixed to the tip of the grindstone shaft 13 has the sliding base 3
Located in the recess of. Then, as shown in FIG. 9C, the axis of the grindstone shaft 13 is always in the ball rolling grooves 21, 22.
NC of the inclination of the grindstone shaft 13 so that it goes to the center O of the arc
Control. Then, the movement of the grindstone 14 is NC controlled so that the grindstone 14 always moves on an arc having a predetermined curvature. In this case, the cutting direction of the grindstone 14 is horizontal.

FIG. 10 shows the ball rolling grooves 21 and 2 of the slide base 3.
FIG. 11 is an explanatory view showing still another example of the grinding method of FIG.
10A is a side view, and FIG. 10B is a diagram showing a relationship between a grindstone and a ball rolling groove. In this example, the direction of the ball rolling groove is opposite to that of the example shown in FIG. 8, and the ball rolling groove is convex upward.

As shown in FIG. 10A, the slide base 3 is fixed to the XY table or the rotary table 16 by using a jig 17. In the case of a rotary table, the table 16 is Y
It is possible to rotate around the -Y line. Wheel axis 13
The grindstone 14 fixed to the tip of the is located in the recess of the slide base 3.

As shown in FIG. 10 (b), the slide base 3 rotates about the center O of the arc of the ball rolling grooves 21 and 22. In this case, the grindstone 14 is fixed, and the cutting direction of the grindstone is vertical. A pair of ball rolling grooves 2 that oppose each other by reciprocally rotating the slide base 3
Grind 1 and 22.

FIG. 11 is an explanatory view showing an example of a method for grinding the ball rolling grooves 11, 12 of the curved track rail 1. This example is a grinding method when the radius of curvature of the ball rolling grooves 11 and 12 is large and the arc is close to a straight line. As shown in FIG. 11, the curved track rail 1 is a mount 1 having an arc-shaped upper surface.
It is fixed to the table 16 of the grinding machine via 8. The grindstone 14 fixed to the tip of the grindstone shaft 13 moves up and down by NC control while the grindstone shaft 13 keeps the vertical state as the work (track rail 1) or the grindstone 14 moves in a direction orthogonal to the paper surface. Exercise in the direction. In this case, the cutting direction of the grindstone 14 is horizontal.

12A and 12B are explanatory views showing another example of the method for grinding the ball rolling grooves 11, 12 of the curved track rail 1, FIG. 12A being a side view, and FIG. 12B being a grindstone and a ball. It is a figure which shows the relationship with a rolling groove. In this example, ball rolling groove 1
This is a grinding method when the curvature radii of 1 and 12 are small.

As shown in FIG. 12 (a), the curved track rail 1 is fixed to the table 16 of the grinder through a mount 18 having an arcuate upper surface. As shown in FIG. 12B, the inclination of the grindstone shaft 13 is NC controlled so that the axis of the grindstone shaft 13 always faces the center O of the arc of the ball rolling groove.
Then, the movement of the grindstone 14 is NC controlled so that the grindstone 14 always moves on an arc having a predetermined curvature. In this case, the cutting direction of the grindstone 14 is horizontal. The smaller the diameter of the grindstone, the closer the ball rolling grooves 11, 12 can be to the set shape.

Next, a second embodiment of the curve guide device according to the present invention will be described with reference to FIGS. 13 to 20. FIG. 13 is a sectional view of the curved guide device, and FIG. 14 is a perspective view of the curved guide device. In the embodiment shown in FIGS. 13 and 14, elements having the same operations as those of the embodiment shown in FIGS. 1 to 4 will be described using the same reference numerals.

The main structures of the curved track rail 1 and the sliding base 3 in this embodiment are the same as those of the first embodiment shown in FIGS. 1 to 5, but only the structure of the ball rolling groove is different. That is, in the curved guide device of the present embodiment, as shown in FIGS. 13 and 14, the upper ball rolling groove 11 of the curved track rail 1 is formed on the rail upper surface 1a, and the upper ball rolling of the slide base 3 is formed. The groove 21 is formed on the lower surface of the horizontal portion 3a. Further, lower ball rolling grooves 12 are formed on the left and right side surfaces 1c and 1d of the curved track rail 1 along an arc having a predetermined curvature. On both sleeves 3b, 3b of the slide base 3, a lower ball rolling groove 22 is formed along a circular arc having a predetermined curvature at a position corresponding to the lower ball rolling groove 12 of the curved track rail 1. . Other configurations are similar to those of the embodiment shown in FIGS.

Upper ball rolling groove 1 facing the ball 4
A contact angle line connecting the contact points 1 and 21 is set in the vertical direction. The contact angle line connecting the contact points of the lower ball rolling grooves 12 and 22 facing the ball 4 is 3 with respect to the horizontal line.
The angle is set to 0 °.

Next, a method for manufacturing the curved guide device shown in FIGS. 13 and 14 will be described with reference to FIGS. FIG. 15 is a perspective view showing upper and lower ball rolling grooves 21 and 22 formed in the horizontal portion 3a and the sleeve portion 3b of the sliding base 3 of the present invention. The upper and lower ball rolling grooves 21, 22 are formed in an arc shape with a predetermined curvature (curvature radius R) in the vertical direction, and these ball rolling grooves 21, 22 are convex downward. Since the lower ball rolling groove 22 has the same structure as the ball rolling groove 22 shown in FIG. 6, it can be ground by the same method as that shown in FIGS. 6 to 10. in this case,
As shown in FIG. 16, the grindstone 14 has a shape corresponding to one ball rolling groove 22 in order to grind only one groove.

FIG. 17 shows the upper ball rolling groove 21 of the slide base 3.
It is explanatory drawing which shows an example of the grinding method. This example is applicable to both cases where the radius of curvature of the ball rolling groove is large and small. As shown in FIG. 17, the slide base 3
The horizontal portion 3a of is fixed to the table 16 of the grinder. A part of the grindstone 14 fixed to the tip of the grindstone shaft 13 is the sliding base 3
Located in the recess of. The grindstone 14 moves along with the work (sliding table 3) or the grindstone 14 in a direction orthogonal to the paper surface.
The grindstone shaft 13 moves vertically by NC control while maintaining a horizontal state. In this case, a large grindstone 14 can be used, and the cutting direction of the grindstone 14 is a vertical direction.

FIG. 18 shows the ball rolling grooves 21 and 2 of the slide base 3.
It is explanatory drawing which shows the other example of the grinding method of 2. This example is a grinding method when the radius of curvature of the ball rolling grooves 21, 22 is large and the arc is close to a straight line. As shown in FIG. 18, the upper and lower ball rolling grooves 21 and 22 can be simultaneously ground. The grindstone 14 fixed to the tip of the grindstone shaft 13 is positioned in the concave portion of the slide base 3 in an inclined state. The grindstone 14 moves vertically by NC control while the grindstone shaft 13 remains tilted (150 °) with the movement of the workpiece (sliding table 3) or the grindstone 14 in the direction orthogonal to the paper surface. To do. in this case,
The cutting direction of the grindstone 14 is the direction of arrow A. In this example, the two ball rolling grooves are ground at the same time, which facilitates adjustment grinding when setting the preload amount.

FIG. 19 is an explanatory view showing an example of a method of grinding a curved track rail. FIG. 19 (a) is a side view and FIG.
(B) is a figure which shows the relationship between a grindstone and a ball rolling groove.
This example is a grinding method when the rolling grooves 11 and 12 have a small radius of curvature. The curved track rail 1 is fixed to a table 16 of a grinding machine via a mount 18 having an arcuate upper surface. Grinding of the lower ball rolling groove 12 is performed by the grindstone 14A in the same manner as in the example shown in FIG. 11 or 12. on the other hand,
The grinding of the upper ball rolling groove 11 is performed similarly to the example shown in FIG. That is, the grindstone 14B moves up and down by NC control while the grindstone shaft 13B keeps the horizontal state as the work (sliding table 3) or the grindstone 14B moves in the direction orthogonal to the paper surface. In this case, a large grindstone 14B can be used, and the cutting direction of the grindstone 14B is vertical.

In the embodiment shown in FIGS. 1 to 4 and the embodiments shown in FIGS. 13 and 14, a ball having a center of curvature existing vertically above the curved track rail and the slide base and having a convex downward shape is used. Although the embodiment having the rolling groove has been described, the present invention is
Of course, the present invention is also applicable to the type in which the center of curvature exists in the vertical direction below the curved track rail and the slide table and the ball rolling groove has a convex shape on the upper side.

Further, in the embodiment, the curved track rail and the sliding base have been described as an integral example. However, the curved track rail and the sliding base are divided into two by the center line in the vertical direction, and each curved track rail is divided. A ball rolling groove may be formed on one side surface of one piece, and a ball rolling groove may be formed on each sleeve portion of each sliding base piece. In this case, the curved track rail pieces may be separated and fixed. In addition, each sliding base piece is connected using a connecting member.

[0049]

As described above, according to the present invention, since the bending moment does not act on the slide base and the curved track rail due to the load of the load, even if the load is a heavy load, The slide base is not deformed, and the curved track rail does not undulate, and it is possible to highly accurately guide the circular arc movement in the vertical direction. Therefore, a structure suitable for a seismic isolation device or the like that supports a building can be obtained.

Further, according to the present invention, the device can be constituted by a single curved track rail, a support base for supporting the curved track rail, and a slide base sliding on the curved track rail. The number of constituent elements can be minimized.

Further, according to the method for manufacturing the curved guide device of the present invention, it is possible to accurately grind the arc-shaped ball rolling grooves formed on both sleeve portions of the slide base and both side surfaces of the curved track rail. .

[Brief description of drawings]

FIG. 1 is a side view showing an overall configuration of an embodiment of a curve guide device according to the present invention.

FIG. 2 is a perspective view showing an overall configuration of an embodiment of a curve guide device according to the present invention.

FIG. 3 is an enlarged view of a main part of FIG.

4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a perspective view showing a ball rolling groove formed in the slide base of the present invention.

FIG. 6 is an explanatory view showing an example of a method for grinding a ball rolling groove of a slide base of the present invention.

FIG. 7 is an explanatory view showing another example of the method for grinding the ball rolling groove of the sliding table of the present invention.

FIG. 8 is an explanatory view showing still another example of the method for grinding the ball rolling groove of the sliding base of the present invention.

FIG. 9 is an explanatory view showing still another example of the method for grinding the ball rolling groove of the sliding table of the present invention.

FIG. 10 is an explanatory view showing still another example of the method for grinding the ball rolling groove of the sliding table of the present invention.

FIG. 11 is an explanatory view showing an example of a method for grinding a ball rolling groove of a curved track rail of the present invention.

FIG. 12 is an explanatory view showing another example of the method for grinding the ball rolling groove of the curved track rail of the present invention.

FIG. 13 is a sectional view of a second embodiment of the curved guide device according to the present invention.

FIG. 14 is a perspective view of a second embodiment of the curved guide device according to the present invention.

FIG. 15 is a perspective view showing a ball rolling groove formed in the sliding base of the present invention.

FIG. 16 is an explanatory view showing an example of a method of grinding the ball rolling groove of the sliding table of the present invention.

FIG. 17 is an explanatory view showing an example of a method for grinding the ball rolling groove of the sliding table of the present invention.

FIG. 18 is an explanatory view showing another example of the method for grinding the ball rolling groove of the sliding table of the present invention.

FIG. 19 is an explanatory view showing an example of the ball rolling groove of the curved track rail of the present invention.

FIG. 20 is a perspective view showing the overall configuration of a conventional curve guide device.

21 is a sectional view taken along line XXI-XXI of FIG. 21.

FIG. 22 is a perspective view showing a ball rolling groove of a conventional sliding table.

FIG. 23 is a cross-sectional view showing another example of the conventional curve guide device.

[Explanation of symbols]

1 curved track rail 2 support 3 sliding table Four balls 5 side lid 6a Lower side holding plate 6b Upper side holding plate 11,12,21,22 Ball rolling groove 13 Wheel axis 14 whetstone 16 tables 17 jigs 18 mounting base

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yuichi Ishikawa               3-11-6 Nishigotanda, Shinagawa-ku, Tokyo               Teechique Co., Ltd.                (56) Reference JP-A-6-323332 (JP, A)                 JP-A-8-219152 (JP, A)                 JP-A-8-240033 (JP, A)                 JP-A-8-270661 (JP, A)                 JP 58-126055 (JP, A)                 JP-A-1-120421 (JP, A)                 JP-A-5-87136 (JP, A)                 JP-A-8-21440 (JP, A)                 Japanese Examined Sho 57-38812 (JP, B2)                 Actual public Sho 63-24258 (JP, Y2)

Claims (5)

(57) [Claims] 1. A curved surface formed in a vertical direction with a predetermined curvature, the upper surface of which is concave or convex, and the left and right side surfaces are perpendicular to each other.
A curved track rail having a ball rolling groove formed along an arc of a predetermined curvature, a horizontal portion, and a pair of sleeve portions that hang downward from both sides thereof, and a concave portion on the lower surface side. And has a ball rolling groove formed along both sides of the sleeve along a circular arc having a predetermined vertical curvature at a position corresponding to the ball rolling groove of the track rail, and is formed adjacent to the ball rolling groove. A slide table having an unloaded ball hole formed therein, and attached to the front and rear end surfaces of the slide table, and connecting the ball rolling groove and each end of the unloaded ball hole to each other on the inner surface side. A side cover having a ball direction changing passage forming an infinite ball circulation passage, and a ball circulating in the ball infinite circulation passage between the ball rolling groove of the track rail and the ball rolling groove of the slide base. A plurality of balls that bear a load, and are opposed to the balls. The contact angle line that connects the contact point of the ball rolling groove is set at an angle of 45 ° with respect to the horizontal line.
Cage, the curvature and the slide stand ball of the ball rolling grooves of the track rail
Curved guide device characterized in that the rolling grooves have the same curvature . 2. The curve guide device according to claim 1, further comprising a support base that supports a lower surface of the curved track rail so that the curved track rail can be maintained in a curved state with a predetermined curvature. 3. The ball rolling grooves formed on both sides of the curved track rail are formed in parallel vertically, and the ball rolling grooves formed in both sleeves of the slide base are vertically arranged in parallel. The curved guide device according to claim 1, wherein the curved guide device is formed as follows. 4. A curved track rail, which is formed to be curved with a predetermined curvature in a vertical direction, has a concave or convex upper surface, and has ball rolling grooves formed on both side surfaces along an arc of a predetermined curvature. , A horizontal portion and a pair of sleeve portions that hang downward from both sides thereof, and a concave portion on the lower surface side, and both sleeve portions have a predetermined curvature at a position corresponding to the ball rolling groove of the track rail. And a slide base having a ball rolling groove formed along the arc of No. 1 and an unloaded ball hole formed adjacent to the ball rolling groove, and attached to the front and rear end surfaces of the slide base. And a side lid having a ball direction changing passage for forming an infinite ball circulation passage by connecting the respective ends of the ball rolling groove and the unloaded ball hole to each other on the inner surface side, and the inside of the ball infinite circulation passage. It circulates, the ball rolling groove of the track rail and the bow of the slide base. A method for manufacturing a curved guide device comprising a plurality of balls for applying a load between the ball rolling groove and the ball rolling groove, wherein the ball rolling grooves on both sleeves of the sliding base are cut to a predetermined depth with a grindstone. In this state, the sliding base is fixed, and the grindstone is moved along an arc of a predetermined curvature to finish the grinding, thereby forming a curved guide device. 5. A curved track rail, which is formed to be curved with a predetermined curvature in a vertical direction, has a concave or convex upper surface, and has ball rolling grooves formed on both side surfaces along an arc of a predetermined curvature. , A horizontal portion and a pair of sleeve portions that hang downward from both sides thereof, and a concave portion on the lower surface side, and both sleeve portions have a predetermined curvature at a position corresponding to the ball rolling groove of the track rail. And a slide base having a ball rolling groove formed along the arc of No. 1 and an unloaded ball hole formed adjacent to the ball rolling groove, and attached to the front and rear end surfaces of the slide base. And a side lid having a ball direction changing passage for forming an infinite ball circulation passage by connecting the respective ends of the ball rolling groove and the unloaded ball hole to each other on the inner surface side, and the inside of the ball infinite circulation passage. It circulates, the ball rolling groove of the track rail and the bow of the slide base. A method for manufacturing a curved guide device comprising a large number of balls for loading a load between the curved rolling rails and the ball rolling grooves on both side surfaces of the curved track rail, in which a grindstone is cut to a predetermined depth. In that state, fix the track rail,
A method for manufacturing a curved guide device, which is formed by moving a grindstone along an arc having a predetermined curvature to finish grinding.