JPH04366016A - Side plate of four rows infinite straightly moving guide unit - Google Patents

Abstract

PURPOSE:To reduce the production cost of a member by forming four side plates mounted on right and left sides of front and rear surfaces of a easing of a guide unit with the same member in which the form on the side made in contact with a suspending parts on a easing is symmetrical relative to the centerline of a side plate in horizontal direction. CONSTITUTION:A guide unit is composed of a track rail 1, a slide unit 2 mounted on the rack rail 1, and four sets of rolling elements 3,3. On both sides 4,4 of the track rail 1, raceway surfaces 5, 5 and 6, 6 are formed. Also a total of four side plates 10, 10 are mounted at front and rear ends 9, 9 of both right and left suspending parts 8, 8 on a easing 7 of a slide unit 2. The four side plates 10 are formed with the same members in which the form on the side 12 made in contact with the suspending part 8 on the casing 7, i.e., the position and form of a total of four inlet and outlet bolt holes 15, 15, oil holes 19, 19, etc., in two directional converting ways 11a, 11b crossed in right angle X-shape are symmetrical relative to the centerline 16.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to four side plates attached to the left and right sides of both front and rear end surfaces of a casing of a four-row infinite linear motion guide unit.

0002

2. Description of the Related Art A four-row infinite linear motion guide unit is disclosed in Japanese Patent Laid-Open No. 139912/1983.

[0003] This publication discloses a configuration in which separate side plates are attached to the left and right hanging parts of the casing, and a direction change path forming a right-angled X-shaped crossing is provided within the side plates. .

0004

[Problem to be solved by the invention] In the above publication,
As is clear from FIGS. 3, 5, etc., each of the four side plates (end caps 6) has an irregular shape suitable for attachment.

On the other hand, it is desired to reduce the production cost of the four-row infinite linear motion guide unit including the side plates by making the length of the endless circulation path including the cross-over direction change path at the front and rear ends the same length for both the left and right four-row rows. There were many requests, and the challenge was to present a four-row infinite linear motion guide unit that would meet these requests.

[0006]

[Means for Solving the Problems] The present invention comprises a track rail, a slide unit that straddles the track rail, and four sets of rolling elements, and has two strips on each side on both sides of the track rail. Four raceway surfaces are formed, and a total of four side plates are attached to both the front and rear end surfaces of both the left and right hanging parts of the casing of the slide unit, and in the side plates, there are formed a right-angled X-shape when viewed from the direction of movement. Two direction change paths are provided that intersect with each other, and the slide unit moves within the endless circulation path of two rows on each side and a total of four rows provided in the slide unit including the direction change path. In a four-row infinite linear motion guide unit that is capable of linear motion on the track rail through four sets of rolling elements that each roll along one of the surfaces, all of the four side plates are , the shape of the side of the contact surface with the hanging part of the casing, that is, the positions and shapes of the four entrances and exits, bolt holes, oil holes, etc. of the two turning paths intersecting in the right-angled X shape, and the external shape, The above-mentioned problem could be solved by adopting a side plate of a four-row infinite linear motion guide unit made of the same member and symmetrical with respect to the horizontal center line of the side plate.

[0007]

[Function] The production cost of the side plates can be reduced by using the four side plates made of the same material as described above, and by attaching the side plates of the same configuration to both the front and rear end surfaces of the left and right hanging parts of the casing, the side plates can be formed inside the casing. The lengths of the four endless circulation paths can all be made the same length.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be explained with reference to illustrated embodiments.

As shown in FIGS. 1 to 3, the four-row infinite linear motion guide unit includes a track rail 1, a slide unit 2 that straddles the track rail 1, and four sets of rolling elements 3, 3. Both sides 4 of the track rail 1,
A total of four raceway surfaces 5, 5 and 6, 6, two on each side, are formed on 4, and a total of four raceway surfaces 5, 5 and 6, 6 are formed on both front and rear end surfaces 9, 9 of both left and right hanging parts 8, 8 of the casing 7 of the slide unit 2. side plates 10, 10 are attached, inside the side plates 10,
Two direction change paths 11a and 11b are provided which cross each other in a right-angled X shape when viewed from the direction of travel, and the slide unit 2 includes the direction change paths 11a and 11b. Through four sets of rolling elements 3, 3 that roll along either of the raceway surfaces 5, 6 in an endless circulation path with two rows on each side and a total of four rows provided,
It is capable of direct movement on the track rail 1.

In the four-row infinite linear motion guide unit, the four side plates 10, 10 are all connected to the casing 7.
The shape of the contact surface 12 side with the hanging part 8, that is, the shape of the two direction change paths 11a and 11b (see FIGS. 3, 14, and 15) intersecting in the right-angled X shape (see FIGS. 3, 14, and 15); Load roadside entrance/exit 13, 13 and return roadside entrance/exit 14, 14
), the positions and shapes of bolt holes 15, 15, oil holes 19, 19, etc., and the external shape are symmetrical with respect to the center line 16.

The side plate 10 includes a side plate body 17 as shown in FIGS. 4 to 9, and a spacer 1 as shown in FIGS. 10 to 12.
8 and more.

As shown in FIGS. 13 to 15, a spacer 18 is fitted into the side plate 17 to form the side plate 10.

As shown in FIGS. 4 to 9, the side plate 17 has the following structure.
A deep direction changing groove 20 is provided on the contact surface 12 with the casing 7.
and a shallow direction change groove 2 having the same width and orthogonal to the direction change groove 20.
A shallow semicircular fitting groove 2 into which the spacer 18 is fitted is formed on both sides of the direction change groove 20 near the center.
2 and 22 are recessed.

Bolt holes 15, 15 for fixing the side plate body 17 to the casing 7 are drilled on the center line 16 in the abutment surface 12, and oil holes 19, 19 are provided in the horizontal direction of the side plate 10. The holes are drilled symmetrically with respect to the center line 16 of.

The outer contour of the abutting surface 12 is symmetrical with respect to the center line 16.

A load end 3 is formed at the end of the direction change groove 20 on the load road side, which is close to the track surface 5 or 6 of the track rail 1 when assembled as a four-row infinite linear motion guide unit. This helps in smooth rolling of the rolling elements 3 between the road and the direction change road 11a.

Similarly, a load end 24 is formed at the end of the direction change path 21 on the load road side, which helps in smooth rolling of the rolling elements 3 between the load path and the direction change path 11b.

The spacer 18 shown in FIGS. 10 to 12 includes:
A tall semicircular arc shaped protrusion 25 and a shallow semicircular arc shaped protrusion 26 perpendicular to the protrusion 25 are formed.
5 is provided with a conversion hole 27.

In the conversion hole 27, the spacer 18 is connected to the side plate 1.
7 to form the side plate 10, it forms the center portion of the direction change path 11b.

The width of the protrusion 26 is wider than that of the protrusion 25 because it also has a shape to be fitted into the fitting grooves 22, 22 of the side plate 17.

A spacer 18 is fitted into the side plate body 17 to form the side plate 10 as shown in FIGS. 13 to 15.

Direction changing groove 20 of side plate 17 and spacer 1
A deep direction change path 11a is formed by the protrusion 25 of 8, and a load road side entrance/exit 13 of the direction change path 11a;
A return roadside entrance/exit 14 is formed on the contact surface 12 .

Furthermore, the direction change groove 21 of the side plate 17 and the protrusion 26 of the spacer 18 allow the direction change path 11 to be made shallower.
b is formed so as to intersect with the direction change path 11a, and the load road side entrance/exit 13 and the return road side entrance/exit 14 of the direction change path 11b are formed on the contact surface 12 as described above.

The aforementioned load roadside entrances 13, 13 are formed symmetrically with respect to the center line 16, and both return roadside entrances 14, 14 are also formed symmetrically with respect to the centerline 16.

Note that an appropriate oil passage can be formed in the side plate 10 depending on the type and size of the four-row infinite linear motion guide unit.

[0026] The slide unit 2 also has a structure shown in Figs.
As shown in FIG. 2, a horizontal side plate 28 is provided as appropriate depending on the type of the four-row infinite linear motion guide unit, and is abutted against the side plate 10 and fixed to the end surface 9 of the casing 7.

As shown in FIG. 2, the side plate 10 that abuts the end surface 9 on the left side in the figure and the side plate 10 that abuts on the end surface 9 on the right side in the figure of the casing 7 are completely the same member. Can be done.

Therefore, as shown in FIGS. 13 to 15,
The long direction change path 11a of the left side plate 10 in FIG. 2 is connected to the short direction change path 11b of the right side plate 10 to form an endless circulation path, and the short direction change path 11b of the left side plate 10 in FIG. , is connected to the long direction change path 11a of the right side plate 10 to form an endless circulation path.

[0029] Therefore, both the endless circulation paths have the same length. As a result, a total of four rows of endless circulation paths formed on both sides of the slide unit 2 are formed to have equal lengths.

Since the four endless circulation paths are formed to have the same shape and length, the number of rolling elements 3 accommodated in each endless circulation path is the same, and the slide unit 2 that moves linearly on the track rail 1 is Smooth linear motion.

Normally, as shown in FIGS. 1 to 3, both front and rear ends of the slide unit 2 are covered with end seals 29.

[0032]

Effects of the Invention As mentioned above, the four side plates attached to both the front and rear end surfaces of the left and right hanging parts of the casing of the slide unit are all made of the same material and have the same shape. Since the types of parts that make up the guide unit can be reduced, the production cost of parts can be reduced, and the assembly process can be further simplified, making it possible to reduce the overall production cost. .

Furthermore, since the four-row endless circulation paths can be made to have the same shape and length, the linear motion of the four-row infinite linear motion guide unit can be made smoother.

[Brief explanation of drawings]

FIG. 1 is a plan view of an embodiment of a four-row infinite linear motion guide unit.

FIG. 2 is a side view of the four-row infinite linear motion guide unit.

FIG. 3 is an elevational view showing the four-row infinite linear motion guide unit with part of the end face seals in the linear motion direction removed.

FIG. 4 is a plan view of the contact surface side of the embodiment of the side plate body.

5 is a side view taken in the direction of arrow A in FIG. 4. FIG.

6 is a side view taken in the direction of arrow B in FIG. 4. FIG.

7 is a side view taken in the direction of arrow C in FIG. 4. FIG.

8 is a sectional view taken along line DD in FIG. 4. FIG.

9 is a cross-sectional view taken along the line E-E in FIG. 4. FIG.

FIG. 10 is an enlarged plan view of an embodiment of a spacer.

11 is a side view taken in the direction of arrow H in FIG. 10. FIG.

12 is a side view in the direction of arrow J in FIG. 10. FIG.

FIG. 13 is a plan view of the contact surface side of the embodiment of the side plate.

14 is a sectional view taken along line FF in FIG. 13. FIG.

15 is a sectional view taken along line GG in FIG. 13. FIG.

[Explanation of symbols]

1 Track rail 2 Slide unit 3 Rolling element 4 Side 5, 6 Raceway surface 7 Casing 8 Drooping part 9 End face 10 Side plate 11a, 11b Turning path 12 Contact surface 13 Load roadside entrance 14 Return roadside entrance 15 Bolt hole 16 Center line 19 Oil hole

Claims (1)

[Claims] Claim 1: Consisting of a track rail, a slide unit that straddles the track rail, and four sets of rolling elements, a total of four track surfaces, two on each side, are formed on both sides of the track rail. A total of four side plates are attached to both the front and rear end surfaces of both the left and right hanging parts of the casing of the slide unit, and in the side plates, there are two side plates each forming a right-angled X-shaped folding intersection when viewed from the direction of movement. A book direction change path is provided, and the slide unit moves along either of the track surfaces within an endless circulation path of two rows on one side and a total of four rows provided in the slide unit including the direction change path. In the four-row infinite linear motion guide unit, which is capable of linear movement on the track rail through four sets of rolling elements, each of the four side plates is in contact with the hanging part of the casing. The shape of the contact side, that is, the positions and shapes of the four entrances and exits of the two turning paths intersecting in the right-angled X shape, bolt holes, oil holes, etc., and the external shape are based on the horizontal center line of the side plate. A side plate of a four-row infinite linear motion guide unit, characterized in that it is made of the same member and is symmetrical with respect to the side plate.