JPH09210059A - Rail guide with linear guide and rail rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rail guide stably slid and reciprocated and generating no failure and no noises by slidably inserting bearings of a linear guide between two rail rods, and reciprocating the linear guide along the rail guide. SOLUTION: Two grooves are provided in parallel on the inner face of a rail guide 1 having a U-shaped cross section, rail rods 3 are inserted into each of two grooves 2 to form parallel guides 4. The rail guide 1 is made of a material, e.g. a normal steel product applied with no hardness treatment, aluminum, or a plastic. A linear guide 5 fixed to the lower face of the conveying table 7 of an industrial apparatus is slidably inserted into the rail guide 1, for example, bearings 6 of the linear guide 5 are pinched and guided between two parallel guides 4, 4 formed with the side faces exposed from the grooves 2 of two rail rods 3, 3, and the linear guide 5 is reciprocated in the rail guide 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail guide in which a linear guide having a bearing is inserted in a rail guide, and for example, reciprocates a moving mechanism such as a transport table of industrial equipment or an arm of an industrial robot. It is used as a means for moving or as a means for reciprocating by expanding and contracting a telescopic cover or the like.

[0002]

2. Description of the Related Art Conventionally, for example, as a means for reciprocating a moving mechanism such as a carrying table of industrial equipment, a linear guide having a bearing is attached to a lower side surface of the moving mechanism such as a carrying table, and the linear guide is used as a rail guide. The linear guide is slidably inserted into the rail guide, and a moving mechanism such as a transport table which is integral with the linear guide is configured to reciprocate on the rail guide.

Further, when a linear guide provided with a bearing is used as a means for reciprocating the moving mechanism such as the carrying table of the industrial equipment described above, the moving mechanism such as the carrying table and the linear guide provided with the bearing are naked. When exposed, there were the following inconveniences. Foreign matter such as chips and spatters and dust are mixed and adhered to the voids of the moving mechanism, which hinders smooth movement and wears the sliding parts. There is a risk that environmental pollution will occur due to the scattering of oil and that the limbs and clothes of workers will be caught. There is no aesthetic sense of design as an industrial machine.

Therefore, as a countermeasure, both ends of a moving mechanism such as a carrier table are fitted with one end of a covering mechanism such as a telescopic cover (telescopic type), and the other end of the covering mechanism such as the nesting cover is industrially mounted. It was attached to a fixed part of the equipment, and the moving mechanism was reciprocally moved so that a covering mechanism such as a telescopic cover could be expanded and contracted.

In order to inexpensively manufacture a rail guide fitted with a linear guide used as a moving mechanism for industrial equipment as described above, a normal steel material which is not hardened is used as the material of the rail guide. Often.

However, there is a high-performance industrial device that has undergone recent technological innovation, for example, a high-speed moving mechanism for an arm of an industrial robot that reciprocates at high speed. If you use normal steel or aluminum that has not been hardened,
The contact surface of the rail guide with the bearing is abraded, which hinders sliding and reciprocating movement of the linear guide within the rail guide, resulting in failure and noise.

Further, in order to cope with high-speed reciprocating movement in a moving mechanism of high-performance industrial equipment, a steel material hardened to the rail guide, for example, high carbon chrome bearing steel (SUJ) is used. However, in this case, the contact surface of the rail guide with the bearing will not be worn out and will not interfere with sliding. However, the entire rail guide will be expensive and hard carbonized and polished. Since it is made of chrome bearing steel, it has the drawback of being expensive as a rail guide, and has the disadvantage that it can only be used for high-grade, high-value-added industrial equipment.

Furthermore, the conventional rail guide requires a long rail guide because the linear guide bearing contacts the inner surface of the rail guide and the linear guide slides and reciprocates in the rail guide. In this case, if several rail guides are lined up in a row and connected by screwing, welding, etc., there will be joints, which will interfere with the sliding and reciprocating movement of the linear guide bearings, causing defects and noise. It was

[0009]

DISCLOSURE OF THE INVENTION The present invention requires a costly hardening treatment (polishing treatment) as the entire material of a rail guide used as a moving mechanism for reciprocating at high speed in high-performance industrial equipment. Not using low-cost ordinary steel, aluminum, plastic, and other inexpensive materials, the contact surface with the bearing does not wear, sliding of the linear guide in the rail guide, stable reciprocating movement,
The purpose is to provide a rail guide at a low cost that does not cause failures or noise.

Further, according to the present invention, as the whole material of the rail guide, a relatively light weight ordinary steel material, aluminum, plastic or the like is used without using a hardened (abrasive) heavy steel material. The purpose is to reduce the weight of the rail guide and to contribute to the weight reduction of the industrial equipment.

Further, according to the present invention, a long rail guide, which has been difficult to manufacture in the past, is manufactured by arranging and connecting a plurality of short rail guides, which are easy to manufacture, in a line and connecting the long rail guide. The purpose of the invention is to make it seamless so that the sliding and reciprocating movement of the bearing of the linear guide is not hindered.

[0012]

SUMMARY OF THE INVENTION The present invention relates to a rail guide provided with a linear guide and a rail rod,
The rail guide is made of non-hardened ordinary steel, aluminum, plastic, etc., and a linear guide with bearings is slidably inserted into this rail guide, and the linear guide is guided along the rail guide. In the rail guide to be moved back and forth, two grooves parallel to the surface of the rail guide that contacts the bearing are provided, and a rail bar made of hardened steel is inserted into each of these two grooves. , The side surface of the rail bar is exposed from the groove, and the linear guide bearing is slidably inserted between the two rail bars with this side surface exposed, and the linear guide reciprocates along the rail guide. There is a feature in making it.

[0013]

The rail guide provided with the linear guide and the rail rod of the present invention is a rail rod made of a hardened steel material in each of two parallel grooves provided in the rail guide. Insert the linear guide bearings between the parallel guides formed by the side surfaces exposed from the grooves of these two rail rods so that they are inserted so that they are more exposed.
Since the guide is moved while being guided by the guide, the linear guide stably moves back and forth in parallel along the rail guide.

Further, since the rail rod is made of a hardened steel material, the rail guide is manufactured even though the whole rail guide is made of a non-hardened steel material, aluminum, plastic or the like. The contact surface with the bearing is not worn.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a rail guide of the present invention has two grooves 2 provided in parallel with each other on the inner surface of a rail guide 1 having a U-shaped cross section. On rail bar 3
To form parallel guides 4. The rail guide is made of a material that can be obtained at low cost, such as ordinary steel, aluminum, plastic, etc., which has not been subjected to hardness treatment.

It is desirable that the rail rod 3 is manufactured by hardening treatment such as sub-zero hardening treatment stainless steel or continuous heat treatment silicon chrome steel oil tempered wire or piano wire. It is possible to use any steel material having high wear resistance, and in some cases, since the rail rod 3 has a small area and is easy to process, it is preferable to polish the rail rod 3. The slidability of the rail bar 3 is further improved.

The length of the rail guide 1 is appropriately determined according to the purpose of use, but in the normal case, a length of about 50 to 300 cm is easy to manufacture. However, when the length of the rail guide 1 is 500 cm or more, it is conventionally very difficult to manufacture the rail guide 1. However, in the present invention, for example, a plurality of rail guides 1 each having a length of 100 cm are arranged in a line and each of them is arranged in a line. By inserting the long rail bar 3 into the groove 2 of the rail guide 1, the rail guides 1 are connected to each other to manufacture the long rail guide 1 having the seamless guide 4.

As shown in FIG. 2, the groove 2 of the rail guide 1 is formed in a C shape, for example, and a rail bar 3 having a circular cross section is formed in the C groove 2. When the rail bar 3 is inserted without a gap, the side surface of the rail bar 3 is exposed from the C-shaped groove 2, and the exposed side surface of the rail bar 3 serves as the guide 4.

The groove 2 of the rail guide 1 is formed in a trapezoidal shape, and the rail bar 3 having a trapezoidal cross section is inserted into the trapezoidal groove 2 without any gap. The rail bar 3 may be inserted so that the side surface of the rail bar 3 is exposed from the trapezoidal groove 2. In addition, the shape of the groove 2 of the rail guide 1 and the shape of the rail bar 3 are such that the rail bar 3 is inserted into the groove 2. Any member may be used as long as it can be inserted and fixed in a state without a groove and the side surface of the rail bar 3 can be exposed from the groove 2.

The rail guide 1 may have a monorail shape as shown in FIG. 3. In this case, the groove 2 provided on the side surface of the monorail rail guide 1 is used.
The guide 4 may be formed by inserting the rail bar 3 into the inside.

Inside the rail guide 1, as shown in FIGS. 4 and 7, for example, a transport table 7 for industrial equipment is used.
Insert the linear guide 5 fixed to the lower surface of the
In the state where the bearing 6 of the linear guide 5 is sandwiched between the two parallel guides 4 and 4 formed by the side surfaces of the two rail bars 3 and 3 exposed from the groove 2, the linear guide 5 is configured to reciprocate in the rail guide 1.

The bearing 6 of the linear guide 5 fitted between the guides 4 formed by the rail rods 3 inserted in the grooves 2 provided on both inner surfaces of the rail guide 1 is as shown in FIGS. Alternatively, it may be inserted so as to be sandwiched between the guides 4 formed by the inclined portions of the rail bar 3 having a triangular or square cross section.

As the linear guide 5 provided with the bearing 6, a known one already used in each field is used. For example, the linear guide LS of NSK Corporation is used.
(Compact type), LH (High load type), LY (High load type), LN (Medium load type), LW (Wide type), LU (Miniature type), LE (Miniature wide type), LL (Miniature lightweight type) ) Series are suitable.

As shown in FIGS. 4 and 7, if the linear guide 5 is provided with, for example, a transport table 7 for industrial equipment, the transport table 7 loaded with articles reciprocates together with the linear guide 5 to convey the articles. Transport and other work. Note that, in FIG. 7, two parallel guides 4 including two rail rods 3, a linear guide 5 provided with a bearing 6 and the like are exposed, but for easy understanding of the configuration of the present invention. For the purpose of explanation, these parts are usually covered by the rail guide 1.

[0025]

According to the present invention, as the entire material of the rail guide, an inexpensive hardened steel material is not used, and an inexpensive hardened ordinary steel material, aluminum, plastic or the like is inexpensive. By using such a material, it is possible to reduce the cost of the rail guide.

Further, according to the present invention, it is possible to reliably slide and reciprocate by sandwiching the bearing of the linear guide between the rail guides formed by two parallel rail rods, and Since the contact surface of the rail guide with the bearing does not wear, when used as a moving mechanism for reciprocating industrial equipment, it operates stably, smoothly, without noise, and without malfunction. It is possible to cope with the movement of the moving mechanism of the recent high speed and complicated industrial equipment.

Further, according to the present invention, as the entire material of the rail guide, a relatively light weight non-hardened ordinary steel material, aluminum or plastic is used without using a heavy hardened steel material. It is possible to reduce the weight of the rail guide by using
As a result, there is a merit that contributes to the weight reduction of the moving mechanism of the industrial equipment which has been demanded in recent years.

Furthermore, according to the present invention, a long rail guide, which has been difficult to manufacture in the past, is standardized, and several short rail guides are arranged in a line, and these rail guides are connected by a long rail rod. It is possible to easily and easily manufacture a fairly long rail guide that is seamless and does not hinder bearing sliding and reciprocating movement, and has the advantage of expanding the field of use as a moving mechanism for industrial equipment.

In particular, when several rail guides are arranged in a row to form a long rail guide, even if there is a gap between the rail guides, the rail guides are formed by long rail rods. Since the rail guide can secure the sliding and reciprocating movement of the bearing of the near guide, when manufacturing it as a moving mechanism of industrial equipment, it is possible to significantly reduce the manufacturing cost without requiring precision work and skilled workers. .

The linear guide of the present invention and the guide provided with the rail bar are used, for example, as means for reciprocating a moving mechanism such as a transport table of industrial equipment or an arm of an industrial robot, or a telescopic cover or the like. It can be used not only as a means for expanding and contracting and reciprocating, but also as a means for opening and closing an elevator door or a large factory door.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state where a rail bar having a circular cross section is inserted into a groove of a rail guide.

FIG. 2 is a sectional view showing a state where a rail bar having a circular cross section is inserted into a groove of a rail guide.

FIG. 3 is a cross-sectional view showing a state where a rail bar is inserted into a groove of a monorail rail guide.

FIG. 4 is a cross-sectional view showing a state in which a linear guide provided with a bearing is slidably inserted between guides formed by rail bars provided in the rail guide of the present invention.

FIG. 5 is a cross-sectional view showing a state where a linear guide bearing is inserted between guides formed by inserting a rail bar having a triangular cross section into a groove of the rail guide of the present invention.

FIG. 6 is a cross-sectional view showing a state where a linear guide bearing is inserted into a guide formed by inserting a rail rod having a square cross section into a groove of the rail guide of the present invention.

FIG. 7 is a perspective view showing a state in which a linear guide provided with a bearing is slidably inserted between guides formed by rail bars provided in the rail guide of the present invention.

[Explanation of symbols]

 1 Rail guide 2 Groove 3 Rail rod 4 Guide 5 Linear guide 6 Bearing 7 Transport table

Claims (1)

[Claims] 1. A rail for reciprocating the linear guide along the rail guide by inserting a linear guide having a bearing into a rail guide made of normal steel material, aluminum, plastic or the like which has not been hardened. In the guide, two grooves parallel to the surface of the rail guide with which the bearing of the linear guide comes in contact are provided, and a rail bar made of hardened steel material is inserted into each of the two grooves. One side of the linear guide is exposed from the groove, and the bearing of the linear guide is slidably inserted between the two rail bars that expose this side, and the linear guide reciprocates along the rail guide. Rail guide with guide and rail bar.