JPS6188018A - Linearly sliding bearing - Google Patents

Abstract

PURPOSE:To set the straight linearity of a track base easily and securely by providing an inclined face and a stopping face which erects nearly at a right angle from the lower side end of said inclined face, on a fixed part while providing an installing face and a fixing means installing port on said track base. CONSTITUTION:A track base 5 is formed into nearly a rectangular shape in section having an installing face 22 consisting of a bottom face 22a and the lower part of a side face 22b which erects at a right angle form one end of the bottom face 22a. An upper traveling face 23 facing obliquely upward, which is opposite to a traveling face 9a formed on the bottom face side of the end part of the horizontal part 2a of a sliding base 1, is provided on one of its shoulder parts. The side face of the other of its shoulder parts is cut off in a V-shape, and a side-part traveling face 24 which is opposite to a traveling face 9a formed on the inner face side on the bottom end part 2b of a vertical part 2b of the sliding base 1, is provided on the downwardly inclined face of the cut-off part. And, a fixing means installing port 25 which is nearly perpendicular to the upper-part installing face 3 of the sliding base 1, is provided on the central part of the track base 5.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a linear slide that linearly guides a movable body to be slid in a sliding part of a machine tool such as an NG machine or an industrial robot. This relates to dynamic bearings, and is characterized by the ability to easily and reliably fix the track base.

[Prior Art] For example, as shown in FIG. 21, this type of conventional straight file sliding bearing includes a track (a) fixed to the upper surface of a fixed part (B) such as a bed, An IS that is connected to a movable body (L) such as a table and has a rolling guide means (b) such as a ball or roller that rolls along (a)!
It consists of a moving base (C). In this case, it is necessary to fix the track (a) straight to a bed or the like, so as a fixing method, as shown in FIG. 21, 1. The fixed part (M) described in F has a horizontal mounting surface (d) provided on the upper surface of this fixed part (M), and a locking surface (e) standing at right angles from one end of this horizontal mounting surface (d). and a track (a) that abuts and engages with the horizontal mounting surface (d) and the locking surface (e), and a through hole (f) bored in this track (a). For installation by screwing through and connecting to the fixing part (M), fix it with the bolt (0), and also attach the holding member (1) to the side end (N) of the fixing part (M) with the fixing bolt (h). ) and the above-mentioned locking surface (e).
Alternatively, as shown in Fig. 22, the screw hole (k) provided in the side wall (j) standing up at the side end of the fixing part (M) is engaged with the retaining screw (1) that screws into the screw hole (k). There is a known method for fixing the track base (a) to the surface (e) by tightening the bolts (q).

[Problems to be solved by the invention] However, all conventional linear sliding bearings have a locking surface (e) and a holding member (i) or a retaining screw (1).
The height of the wayway (a) must be made higher than necessary in order to hold the slideway (C) in contact with the rolling surface (m) of the wayway (a). The contact position is also high, and when horizontal direction 611 is applied, there is a problem in that a large fishing force is applied to the contact point. Also, when fixing the track (a), use the bolts (g) to attach it.
After temporarily tightening, clamp the way base (a) with the holding member (i) or the holding screw (1), and then install it using Pol I-(Q).
), there was also the problem that the work of fixing the track (a>) was complicated.

Means for Solving Problem E] This invention was made in view of the above circumstances, and as a means to solve the above technical problem, a track base fixed to the upper surface of a fixed part such as a bed, In this linear sliding bearing comprising a slide base having rolling guide means such as balls or rollers that roll along the track base, the fixed portion is inclined with respect to the upper mounting surface of the slide base. It is composed of an inclined surface and a locking surface that stands up from the lower end of the slope substantially perpendicularly to the slope, and the track base is provided with abutting surface that engages the slope and the locking surface. At the same time as forming two mounting surfaces that fit together, a mounting hole for a fixing means is bored substantially perpendicular to the upper mounting surface of the sliding base, and the mounting hole for the fixing means is passed through L1 to connect the fixing part. The present invention provides a linear sliding bearing characterized in that the track base is fixed to a fixed part by means of a fixing means that engages with the bearing.

[Effect] The above technical means works as follows.

The mounting surface of the track base is brought into abutting engagement with the slope formed on the fixed part and the locking surface that stands up from the lower end of the slope at a substantially right angle. By engaging the fixing means with the fixing part by fitting the fixing means mounting holes and tightening the fixing means, the tightening force of the fixing means acts as a vertical component on the inclined surface and the locking surface, respectively, and this result,
The mounting surface of the track base is in close contact with the inclined surface and the locking surface, respectively.

In addition, since there is no need for lateral adjustment members such as holding members or presser screws, the height of the track platform does not become unnecessarily high, and the point of contact between the track platform and the activity platform can be lowered. At the same time, the load acting on the contact point can be made as small as possible even with respect to horizontal loads.

[Embodiments] Examples of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a sectional view of the first embodiment of the direct tfA sliding bearing of the present invention in use, FIG. 2 is a sectional view of its main parts, and FIGS. 3 and 4 are I- 5 is a plan view of FIG. 2, and FIG. 6 is a sectional view of I [[-11] of FIG. The case of dynamic roller bearings is shown.

The roller bearing of the present invention has a horizontal part (2a) and a drooping part (2b) hanging from one end thereof, and the cross section is formed in an upside-down shape, and the upper part thereof has four faces (3). For installation, hold the bolt (7) and attach it to a movable object such as a table (20
), a pair of roller guides (4) attached to the tip of the horizontal part (2a) and the lower end of the hanging part (2b) of this activity table (1),
), the track base (5) is fixed to a fixed part (21) such as a bed with a fixing bolt (8) as a fixing means, and the horizontal part (2a) and the hanging part ( 2b)
1 by circulating within the roller endless track formed in each
J3 is composed of a training table (1) and a number of rollers (6) that carry a load between the track table (5 inches). In this first embodiment, the rollers (6) are spherical rollers. It is configured.

As shown in FIGS. 8 to 10, the sliding table (1) has a horizontal part (2a) on the bottom side of the tip and a hanging part (2b).
The load area of the roller track is created along the axial direction on the inner surface of the lower end of the roller track, and the running surface of the circular arc surface (
A load groove (9) is formed with 9a), and
The upper surface side of the distal end of the horizontal part (2a) and the outer surface side of the lower end of the hanging part (2b) correspond to the load groove (9) along the axial direction, and are free from the roller M limited track. A groove-shaped non-load portion (10) is formed which constitutes a load area.

In addition, a mounting part (2c) is provided protruding from the base of the sliding table (1) in the opposite direction to the horizontal part (2a), and this mounting part (2c)
C) has a hole (2d) into which four mounting bolts (7) pass.
) are drilled. In addition, the horizontal part (2) of the sliding table (1)
The lower surface of a) is a downwardly sloped surface (11) from the base of the slide table toward the tip.

j- At each end of the sliding table (1) in the longitudinal direction, there is a lid (12) made of synthetic resin as shown in FIGS. 13 to 18.
is fixed with fixing bolts (14) passing through four holes (13) drilled in this lid (12).

In addition, the roller guide (4) is shown in FIG.
As shown in Figure 2, it is formed by press molding of a metal plate or injection molding of a hard synthetic resin, and has approximately semicircular roller turning parts (15) at both ends, and these roller turning parts. (15) has a holding part (16) formed in a roughly L-shaped cross section, and this holding part (16) is connected to the tip of the horizontal part (2a) of the sliding table (1) and the hanging part. (2b)
A load groove (9) and an ib-shaped non-load portion (10) formed at the lower end portion (0) form a load region and a non-load region of the roller endless track, and each of the roller rotation portions (15) is designed to rotate and guide each roller, that is, a spherical roller, between the loaded area and the unloaded area of the roller endless track.The reference numeral (17) in the figure indicates the holding part of this roller guide (4). (16) is a through hole drilled in the page through hole (17), and the sliding table (1) is inserted through this page through hole (17).
The roller guide (4) is attached to the sliding base (1) by screws (18) screwed into each attachment hole (not shown). In this case, the roller rotating portion (15) of the roller guide (4) is fitted and fixed in a substantially semicircular mounting groove (19) provided in the lid (12).

On the other hand, as shown in FIGS. 19 and 20, the above-mentioned track (5) has a mounting surface consisting of a bottom surface (22a) and a lower portion of a side surface (22b) that stands up at right angles from one end of the bottom surface (22a). (22) formed into a rectangular cross section,
One of the shoulders has an upper rolling surface (23) facing diagonally upward facing the rolling surface (9a) formed on the lower surface side of the tip of the horizontal portion (2a) of the slide table (1). , the side surface of the other shoulder is notched in a V-shape, and the downwardly inclined surface of the notch has a rolling surface ( The side rolling surface (2) facing opposite to 9a)'
4). In addition, these rolling surfaces (23),
(24) is formed in the shape of a circular arc having the same radius of curvature as the upper and side raceway surfaces (9a). In addition, in the center of the track (5), 1-1. ! ! Upper mounting surface (3) of the first stand (1)
), and a fixing bolt (8) passing through the fixing hole (25) engages with the fixing part (21), that is, screws into the screw joint. By this, it is fixed to the fixing part (21). In this case, the upper raceway surface (23) and the mounting hole (
25) are formed at an angle of about 10' with respect to the perpendicular (A) to the bottom surface (22a) of the mounting surface (22), and the m-section rolling surface (24) is )
It is formed at an angle of about 45° to 60° with respect to the center Fil (B) (see FIG. 20).

Further, the fixed part (21) has an inclined surface (21a) that is inclined at an angle of about 10° with respect to the mounting surface (3) of the sliding table (1), and the inclined surface (21a). A locking surface (21b) is formed which stands up from the lower end at a substantially right angle to this slope (21a), and these slopes (21a) and locking surface (21b) Orbital platform (5
) serves as a reference surface for attaching the fixing part (21) honestly (see Fig. 1).

Therefore, after the mounting surface (22) of the PA passage stand (5) is abutted and engaged with the inclined surface (21a) and the locking surface (21b) of the fixing part (21), it is fixed with the fixing bolt (8). Part (2
1), the upper raceway surface (23) becomes parallel to the upper mounting surface (3) of the sliding base (1), and the upper rolling surface (23) becomes parallel to the upper mounting surface (3) of the sliding base (1).
) The line of load action of the roller at the tip of the horizontal part (2a) can contact the mounting surface (3) on the top surface of the horizontal part (2a) at right angles, and the side rolling surface (24) The hanging part (2b
) The line of load action of the roller (6) at the lower end can be contacted in an inclined manner.

As shown in FIG. 1, the linear sliding bearing of the present invention configured as described above has a track base (5) positioned on a reference surface of a fixed part (21) such as a bed, that is, on an inclined surface (21a).
It is fixed to the locking surface (21b) with a fixing bolt (8), and is movable on the mounting surface (3) of both IS moving bases (1) that constitute a bearing that slides along the track base (5). Body size 20〉
It is installed using bolts (7) and is used by being incorporated into a linear sliding table that guides the linear reciprocating motion of various mechanical devices. In the assembly work in this case, first, the mounting surface (22) of the track (5) is
)1. : After abutting and engaging, when the fixing bolt (8) is screwed to the fixing part (21) through the shell through the mounting hole (25) provided in the track (5), the fixing bolt (8) When tightening due to the fixing operation, the tightening force of the fixing means is applied to the inclined surface (21
a) and the locking surface (21b) as vertical components, and as a result, the wayway (5) comes into close contact with the locking surface (21b), and the straightness of the wayway (5) is maintained. . After installing the track base (5) in this way, the track base (5)
A roller (6) on the sliding table side is engaged with the upper and side rolling surfaces of the movable body (20), and a preload depending on the application is applied by an adjustment bolt (26) that enters from the movable body (20) side.

In the above embodiment, a case was explained in which spherical rollers were used as the rolling guide means, but the rolling guide means may also be cylindrical rollers (6a) as shown in FIG. Further, the same effect can be obtained even with a ball.

C. Effects of the Invention j As explained above, according to the linear motion bearing of the present invention, the fixed part of the bed etc. has an inclined surface and a lock that stands approximately at right angles from the lower side end of this inclined surface. The track base is formed with a mounting surface that abuts and engages the inclined surface and the locking surface, and a mounting hole for the fixing means drilled in the center of the mounting surface, so that it can be fixed easily. At the same time, the mounting surface of the track base is abutted and engaged with the inclined surface and the locking surface of the part, and the fixing means is engaged with the fixed part in an appropriate amount through the mounting holes for the fixing means drilled in the track base, and tightened. As a result, the tightening force of this fixing means acts as a vertical force on the inclined surface and the locking surface, respectively, and as a result, the PA passage block is formed on the fixing part. The straightness of the track can be easily and reliably set 1' by closely contacting the surface. In addition, since there is no need for side adjustment members such as holding members or holding screws, the height of the way is not unnecessarily increased, and the point of contact between the way and the slide is lowered. Therefore, even with respect to the horizontal load applied to the movable body, the load acting on the contact point of the 4/1 road platform and the sliding platform can be reduced, improving stability. Excellent effects can be obtained.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a first embodiment of the linear sliding bearing of the present invention in use, FIG. 2 is a sectional view showing the main parts of FIG. 1, and FIG. 3 is I-I in FIG. Cross-sectional view, Figure 4 is the second
5 is a plan view of FIG. 2, FIG. 6 is a sectional view of FIG. 5, FIG. 7 is a sectional view of the second embodiment of the invention, and FIG. The figure is a front view of the sliding table in this invention.
9 and 10 are a bottom view and a side view of FIG. 8, respectively, FIG. 11 is a front view of the roller guide in this invention, and FIG. 12 is a IV-IV % view of FIG.
Figure 3 is a front view of the lid body of J'-3 according to the present invention, No. 14.
Figures 15 and 15 are the plan view and rear view of Figure 13, respectively, Figures 16 to 18 are the X-arrow diagram, Y-arrow diagram, and v--■ sectional view of Figure 13, respectively, and Figure 19 is the cross-sectional view of Figure 13. A side view of the track base in J3 according to this invention, FIG. 20 is Vl of FIG. 19.
-Vl sectional view, 9121 is a sectional view of a conventional linear sliding bearing, and FIG. 22 is a sectional view showing another mounting state of the track in the conventional linear sliding bearing. Symbol explanation 1... Sliding base 2a... Horizontal part 2b... Drooping part 4... Roller guide 5... Track base
6... Roller 8... Fixing bolt (fixing means) 9... Load groove 10... No-load portion 21...
Fixed part 21a... Inclined surface 21b... Locking surface
22...Mounting surface 22a...Bottom surface 22b
...Side surface 23...Top raceway surface 24...Side raceway surface 25...Mounting hole patent application Person Teramachi
Hiroshi Agent Patent Attorney Masaru Naruse Human
Tomohiro Nakamura Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 21■ Figure 22 Procedures Nichi Masan (self-motivated) November 1985 tJ Commissioner of the Patent Office Michibe Uga 16 Display of case 1982 Patent Application No. 200377 2 Name of invention Linear sliding bearing 3 Case of person making amendment Relationship with Patent Applicant Address (Residence) 2-34-8 Higashi Tamagawa, Setagaya-ku, Tokyo Name: Fu Teramachi 4, Agent Address: 105 Phone: 03 (433) 44
205, Date of notice of reasons for refusal Voluntary amendment 6, Number of inventions increased by amendment None 7, Drawings subject to amendment (Fig. 1, Fig. 2, and Fig. 7) Fig. 2 Fig. 7

Claims (2)

[Claims] (1) A track base fixed to the top surface of a fixed part such as a bed,
In this linear sliding bearing comprising a slide base having rolling guide means such as balls or rollers that roll along the track base, the fixed portion is inclined with respect to the upper mounting surface of the slide base. It is composed of an inclined surface and a locking surface that stands up from the lower end of the slope substantially perpendicularly to the slope, and the track base is provided with abutting surface that engages the slope and the locking surface. At the same time, a fixing means mounting hole is formed at a substantially right angle to the upper mounting surface of the sliding base, and the fixing part is inserted through the fixing means mounting hole. A linear sliding bearing, characterized in that the track base is fixed to a fixed part using a fixing means that engages with the fixed part. (2) The linear sliding bearing according to claim 1, wherein the fixing means is a mounting bolt that passes through a fixing means mounting hole of the track and is screwed to the fixed part.