JPS6188017A - Linearly sliding roller bearing - Google Patents

Abstract

PURPOSE:To facilitate installation to a movable body and adjustment of pre-load by connecting a pair of sliding-base half bodies having many rollers to each other by means of an elastically deformable top board which connects the top surfaces of said half bodies. CONSTITUTION:Each of a pair of sliding-base half bodies 1 having nearly an L-shaped longitudinal section, has a horizontal part 1a and a vertical part 1b which extends downward from one end of the horizontal part 1a, and is connected to the other by a top board 3, which connects their top surfaces forming a downward recess part 4, while which is elastically deformable in a position between both of the sliding-base half bodies. Thereby, in order to give a defined pre-load to a bearing, one of the sliding-base half bodies 1 is pressed toward a track base 5 side with an adjusting bolt 24 which is advanced from a movable body A side, causing the top board 3 to be subjected to elastic defomation at its thin wall part 16, to adjust the pre-load. The sliding-base half bodies 1 are installed to a movable body A with bolts 19.

Description

[Detailed description of the invention] U Industrial application g! P] This invention is applicable to sliding parts of machine tools such as NC machines, industrial robots, etc., for example. I'JJ (1t7 to guide A in a straight line)
Since we have written about J-line sliding roller bearings, in detail, we will discuss how to attach the sliding platform that makes up the hair ring to the movable body (
The present invention relates to a roller bearing for linear sliding, which has the following advantages: it makes it easy to adjust the distance between the sliding base and the track base, and the gap 1:υ between the sliding base and the track base can be easily adjusted.

[Conventional technology] Conventional bearings for this type of linear activity are usually.

A sliding base having a C-shaped cross section on the road side and having a concave portion on the lower surface side, a track base in which a part of J is fitted into the concave portion of the sliding base while maintaining a predetermined gap, and the sliding base formed on the sliding base. These holes 9-(・Up and down acting on the sliding table, ! [4 in the right direction; 11 p. C:'t l=
:r It is configured to guide linear reciprocating motion along the track base.

In such linear sliding bearings, the direction change is 0. 'Moment of inertia at J or overhang 1~
In cases where strong rigidity is required due to the impact load of It is important to select an appropriate gap τ depending on the application, such as when it is necessary to reduce the weight.

For example, in conventional linear bearings of this type, the method of adjusting the preload as described above is to select the ball of the sliding table or to cut the transfer pattern of the track.
Alternatively, tighten the adjustment bolt slightly from the oil part of the sliding table. υ
Adjusting the gap between the moving base and the track base.

[Problems to be Solved by the Invention] However, in conventional bearings for linear motion of this type, there is a movement of the ball to selectively fit the balls or to cut the cash during transfer. It is troublesome to assemble the sliding table to the movable body, and the center of gravity may become higher when the sliding table is assembled to the movable body. Therefore, when the horizontal axis Φ is applied, the load application point becomes higher. ,
For this reason, there was a problem in that the load acting on the ball transfer surface between the sliding base of the bearing and the track base became large.

1 “Means for solving problems” This invention was made in view of the above circumstances.

As a means to solve the above technical problem, a water V part and a hanging part hanging down from one end are formed into a vertical blood-curve shape, and the tip 4 of the horizontal part (; Dried sardines; on the inner side, respectively, along its axis direction 1.: along the r cola - corner 6 of the transfer surface that constitutes the load area of the endless track.
P! , is installed between the upper surfaces of the pair of sliding table halves on which the load section is formed and each of the 16 sliding tables facing each other at a predetermined interval. A top plate that can be elastically deformed between these pair of sliding table halves.

A pair of roller tracks are attached to the top end of the horizontal part and the bottom end of the hanging part of each of the sliding table halves, respectively, and cooperate with the load grooves in the horizontal part and the hanging part, or with the load grooves and the non-load grooves to form a roller endless track. The roller guide and the upper part are fitted into the recesses formed by both of the sliding table halves and the top plate while maintaining a predetermined distance from each other, and the horizontal part and the hanging part of each sliding table half. f'r formed in the front groove; a track base with a stone-layered transfer surface facing opposite to the transfer surface of the front groove; and each roller infinite inside the orbit
! I! It is an object of the present invention to provide a roller hair ring for linear sliding, which is characterized in that it is constituted by a large number of rollers that apply a load between the transfer surface on the slide half side and the transfer surface on the track platform side. It is something that

[Action Co. The above technical means works as follows.

When adjusting the preload when assembling a sliding base into a movable body that moves along the +lL road platform, the bolts are removed and the sliding base consisting of a pair of sliding base halves and a top plate is temporarily attached to the 01 moving body. When the gap between the sliding table and the +A road table is adjusted by elastically deforming the above-mentioned rear part by adjusting the pre-stability with the adjustment bolt 4j, a preload is applied to the roller. be done. Furthermore, since the sliding table is incorporated by utilizing the rigidity of the movable body, the top plate can be made thin. In addition, by making the top plate R9 thick, it is possible to reduce the overall height of the bearing.
The goal is to improve stability by lowering the p-center of the movable body.

[Examples] Examples of the present invention will be described in detail below based on the drawings.

FIG. 1 is a sectional view showing the state of use of a first embodiment of the roller hair ring for linear sliding according to the present invention. As shown in FIG. 2, a pair of sliding platform halves (1) having an abbreviated vertical cross-section have a horizontal part (1a) and a hanging part (1b) that hangs down from one end of the horizontal part (1a). And, attach the horizontal part (1a) tip and small part of each sliding table half (1) to the part (1b) bottom end fJ.
Connect a pair of rolled roller kites (2) and the soil surfaces of both moving platform halves (1) to form a downward recess (4).
When formed, there is a top plate (3) that can be elastically deformed between the two half-layer moving table halves (1), and an upper part of the top plate is formed in the recess (4).
a track base (5) that is fitted to the base while maintaining a predetermined interval;
Roller rollers formed in the horizontal part (1a) and the hanging part (1b) respectively circulate in the infinite VL path to move the sliding table half (1
) and a large number of rollers (6) that handle the load between the track (5) and the main part is made up of 4x6.

As shown in FIGS. 1 and 2, the sliding table half (1) has a horizontal portion (1a) on the bottom side of the tip and a hanging portion (1).
b) A transfer surface that constitutes the load area of the roller track along the respective axial directions on the approximately 45° inner surface of the lower end (
7a), and a non-load portion (8) constituting a roller endless track is formed corresponding to each of these load grooves (7). In addition, the sliding table half (1
) is provided with a synthetic resin body (9) as shown in Figs. Different identification bolts (11
) is fixed.

Further, as shown in Figs. 7 and 8, the roller guide (2) is formed by press molding of a metal plate or injection molding of sandy synthetic resin, and has approximately semicircular μ shapes at both ends. Along with the roller turning parts (12), there is a holding part (13) formed in an abbreviated cross-section between these roller turning parts (12). And this holding part (
13) is combined with the load groove (7) and the spiral non-load portion (8) formed at the tip of the horizontal part (1a) and the hanging part (1b) of the sliding table half (1) to make the roller infinite. A cylindrical opening is formed between the loaded area of the track and the unloaded area of the track, and each of the roller turning parts (12) is a cylindrical mouth of each roller (6) between the loaded area and the unloaded area of the roller track. It is designed to guide you by circling around. J5, a locking pawl (13a) for preventing the roller (6) from falling off is formed at the tip of the holding portion (13) of the roller guide (2). 11. In the figure, 71 'E (14) is a through hole drilled in the holding part (13) of this roller kite (2), and the sliding platform half is inserted through this through hole (14). (1)
The roller kite (2) can be attached to the No. II moving platform half (1) by means of screws (15) screwed into each mounting hole (not shown). ,
The roller turning portion (12) of the roller guide (2) is fitted and fixed to the mounting structure (92E) in a substantially semicircular shape (92E) on the body (9).

As shown in Fig. 4, the above-mentioned person & (3) is formed of a substantially rectangular steel plate, etc., and a thin wall portion (16) for controlling elastic deformation is formed in the center thereof. 1. : (Figures 1 and 2), this thin part (16)
The two fixing screws 18) that attach the top plate (3) to the sliding table half (1) in symmetrical positions with respect to the holes (17) and the sliding table half (1) respectively. Three through holes (15) are drilled through which bolts (19) pass through for mounting on the movable table (A (Δ)). Connect the fixing screw (18) to the Kt part of the sliding table half (1) and the 24J tap hole (not shown), and attach the top plate (3) to each door and one sliding table half (A (
1). In this case, the top plate (3) covers the entire surface of the sliding table half (1) and each of the lids (9), and is slightly protruded from each of the lids (9). This means that when in use, the roller bearing of this invention reciprocates; f
This is to protect the lid (9) by the person (3) when the lid body (9) moves and collides with a fixed side of a mechanical device or the like at its terminal position.

In addition, the means for fixing the sliding table half (1) and the top plate (3) are as follows:
It does not necessarily have to be a fixing screw (18), for example,
Fixing means such as welding may also be used.

On the other hand, as shown in FIGS. 1 and 2, the vL platform (5) is provided with approximately 900 notches (20) on both sides thereof, and the upper surface of each notch (20). above on the side []
There is a transfer surface (2) that corresponds to the load groove (7) and constitutes a load area.
1) is formed. In addition, a through hole (22) is drilled in the center of the track base (5) for fixing the track base (5) to a bed (B) such as machine v1. In this installation, the table (5) is fixed to the bed (B) with a fixing bolt (23) passing through the through hole (22).

As shown in FIG. 1, the linear sliding roller bearing of the present invention, which is constructed as follows, has a track base (5) mounted on a base i (surface (C)) of a bed (B) that is attached to a mechanical device, etc.
A sliding platform half body (1) that is fixed with a fixing bolt (23) and also constitutes a bearing that slides along the track platform (5).
A rigid movable body (A>) is constructed on top of the top plate (3), and is attached using ports 1 to (19), and is incorporated into a linear sliding double that guides the linear reciprocating motion of various mechanical devices. At this time, in order to apply a predetermined preload (J) to the bearing, one sliding table half (1) is moved to the movable body (J).
The adjustment port (24) entering from the A) side is pressed against the vL dodai (5) side, but at this time, the one-man board (3)
The thin-walled part (16) of the sliding table half (1) elastically deforms around the periphery of the sliding table half (1), and the gap between the sliding table half (1) and the track table (5) is adjusted based on this elastic deformation. can be done depending on the purpose of use.

In addition, in the above embodiment, the thin wall # (1
6) so that the top plate (3) can be elastically deformed when adjusting the preload, but it is not necessarily limited to the thin wall part (16), but the shape shown in FIG. As in the second embodiment, a bent portion (25) for taking elastic deformation by 61 is formed in the center of the top #ft (3) to achieve the same effect as in the second embodiment.

Further, in the first embodiment, the case where the roller (6) is a circular roller has been explained, but as shown in the third embodiment of FIG. 15, a spherical roller can be used instead of a cylindrical roller. . In this case, the f1 load i- (7) of the sliding platform half (1) and the transfer surface (21) of the track platform (5) are each formed in an arc shape, and these arc-shaped Ω front grooves (7 ) and the diameter of the curvature of the transfer surface (21) are formed to be slightly more crowded than the radius of curvature of the spherical roller. By using the spherical rollers in this way, even if there is a slight bend in the track, automatic A alignment can be performed, so it is possible to avoid local high-angle forward movement Φ.

In addition, in the second and third embodiments, other parts are the same as those in the first embodiment, so the same parts have the same meaning.
n8 is attached and its explanation is omitted.

1. Effects of the Invention As explained in 2 below, the linear sliding roller bearing of the present invention has a pair of sliding table halves each having a large number of rollers constituting the bearing, and these sliding table halves. When the upper surfaces are connected and the masonry is placed at a predetermined interval to form a recess into which the track base is fitted, a J-circle is formed, and a bullet P1 deformable top plate is formed between both sliding base halves. Therefore, if it is easy to attach to a movable body, it will be possible to adjust the preload to or not to apply preload to the tool depending on the application, and the degree of preload can also be adjusted. It can be done in a cylinder. However, since it is possible to incorporate a sliding table using the rigidity of the movable body, one top plate can be made thinner, and because of this, the opening effect when 6η in the horizontal direction is applied to the movable body. The point is lower, and it is possible to achieve a stable white clay.In history, compared to bearings using poles, it is possible to provide a bearing that can withstand a load of 19 cm, so that The utility value is that of chopsticks.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing a first embodiment of the roller hair ring for linear sliding according to the present invention in use, FIG. 2 is a front view of the roller bearing for linear sliding according to the present invention, and FIG.
4 is a plan view of FIG. 2, FIG. 5 is a sectional view taken along the line v-■ of FIG. 2, FIG. 6 is a partially sectional bottom view of FIG. Front view of the roller guide, No. 8
The figures are a sectional view taken along the line ■-■ of FIG. 7, FIG. 9 is a front view of the fitted body according to the present invention, FIG. 10 is a side view of FIG. 9, FIG. 11 is a rear view of FIG. 9, and FIG. The figure is a view from the X arrow in Figure 9.
3 is a view taken along the X arrow in FIG. 9, FIG. 14 is a cross-sectional view of the first embodiment of the present invention in a used state, and FIG. 15 is a cross-sectional view of the third embodiment of the present invention in a used state. be. 1゛No.1 explanation ('1>...Sliding metalwork (A(1a)...Horizontal part <1
1))...Drooping part (2)...Roller chi 1
~(3)... Number of people (4) Recess (5)... Track (6)... Roller (7)
1 full load (8)...Unloaded front part (12)
...Roller rotating part (13)...Holding part (16)...Thin wall part (2
1)... Transfer surface (25)... Bent part (Δ)
...Movable body.

Claims (5)

[Claims] (1) It has a horizontal section and a hanging section that hangs down from one end, and is formed in a substantially L-shape in longitudinal section, and the horizontal section has a lower end of the horizontal section and an inner surface of the lower end of the hanging section along its axial direction. A load groove with a transfer surface constituting the load area of the roller endless track is formed, and at the tip of the horizontal part and the lower end of the hanging part, a roller endless track is formed corresponding to each load groove along the axial direction. It is installed between a pair of sliding table halves in which a non-load portion forming a track is formed, and the upper surface of each of the sliding table halves facing each other at a predetermined interval,
A top plate that can be elastically deformed between the pair of sliding table halves, and a load groove in the horizontal portion and the hanging portion or the load A pair of roller guides that cooperate with the grooves and the non-load portion to form a roller endless track, and an upper part of which maintains a predetermined distance from each other in a recess formed by both of the sliding table halves and the top plate. A track base that is fitted together and has a transfer surface that faces the transfer surface of the load groove formed in the horizontal part and the hanging part of each of the slide base halves, and the horizontal part of each of the slide base halves and the It is composed of a large number of rollers that circulate in each roller endless track formed on the hanging part and apply a load between the transfer surface on the sliding platform half side and the transfer surface on the track platform side. When adjusting the preload when installed on a moving body,
A roller bearing for linear sliding, characterized in that the top plate elastically deforms, thereby making it possible to adjust the gap between the sliding platform half and the track platform. (2) A roller bearing for linear sliding according to claim 1, wherein a thin wall portion for controlling elastic deformation is formed in the center of the top plate. (3) A roller bearing for linear sliding according to claim 1, wherein a bent portion for controlling elastic deformation is formed in the center of the top plate. (4) Each transfer surface formed on each half of the sliding table and the track is flat, and each roller circulating in the endless roller track is a cylindrical roller. 3. The linear sliding roller bearing according to any one of items 3 to 3. (5) Each transfer surface formed on each half of the sliding table and the track base is an arcuate surface, and each roller circulating in the endless roller track is a spherical roller.
A linear sliding roller bearing according to any one of items 1 to 3.