JP4261380B2 - Linear guide with self-lubricating system - Google Patents

Description

The present invention relates to a linear guide with a self-lubricating system, and a linear guide is generally a linear guide mechanism that provides precision control, and includes a wide range of machine arms, industrial machinery, mechanical industry, automation equipment, measuring equipment, electronic equipment, etc. The present invention relates to a linear guide with a self-lubricating system that can be applied to the above mechanism.

Many machines have linear guides installed.
The linear guide is a kind of linear guide mechanism, and if the ball is lubricated with sufficient oil, the linear guide can be operated normally and does not affect the service life.
There are two types of current lubrication methods: indirect lubrication balls (indirect lubrication method) and direct lubrication balls (direct lubrication method).
US Pat. Nos. 6,155,717 and 5,722,333 show the method of indirect lubrication of the linear guide.

The patent adds oil-containing slide blocks at both ends of the slide block, contacts the surface of the guide, lubricates the ball rolling route on the guide surface first with the oil of the slide block, and when the ball passes through the lubricated route, Since it is lubricated with the oil above, it is not effective.
Furthermore, if it is rubbed against the lubrication important point where it comes into contact with the slide block and the guide, it will be damaged and difficult to replace, and if the slide block is installed, the length of the slide block will become long and space will be wasted.
Another direct lubrication ball method is disclosed in US Pat. No. 5,694,811. In this patent, the slide block body is equipped with an oil-containing lubricating material, and the anti-friction oil is in direct contact with the ball and directly lubricates the ball with the oil in the oil-containing material. This method is more effective than indirect lubrication by directly lubricating the ball, but since the lubrication effect is achieved by attaching a lubricating material on the bottom of the slide block or near the ball groove, it is difficult to process the slide block. In addition, there are problems such as an increase in procedure and cost.
Further, since the fibers are directly contacted and rubbed with the balls, the fibers are liable to be damaged, and the fibers are likely to adhere to the balls and enter the rolling route to make the operation of the balls unsuccessful.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a linear guide with a self-lubricating system that eliminates oil leakage and can directly lubricate a rolling body without contact. .
A further object of the present invention is to provide a linear guide with a self-lubricating system that can increase the period of lubrication, stop the operation of the equipment, and reduce the number of times the lubricating oil is replenished.

The present invention can provide a linear guide with a self-lubricating system that eliminates oil leakage and can directly lubricate a rolling body without contact.
Furthermore, the present invention can provide a linear guide with a self-lubricating system that can increase the lubrication period and reduce the number of times of replenishment of anti-friction oil performed by stopping the operation of the equipment.

In order to achieve the above-mentioned problems, the present invention provides a linear guide comprising a rectangular guide and a slide block set that slides provided on the guide, wherein the slide block set includes a slide block body in which a hollow groove is formed; Including a cover, a plate, and a rolling body, the cover is disposed at both ends of the slide block body, and the plate is disposed between the cover and the slide block body, and the inner surface of the cover and the cover form a complete turning direction route. The rolling body is rotatably disposed between the guide and the slide block set, and the slide block set is provided with a self-lubricating system that adjusts the oil supply amount of the anti-friction oil according to the motion speed of the rolling body, self lubricating system includes an oil storage device and lubrication route, the oil storage unit oil storage tank and the bottom plate The left and right rolling bodies are held so as not to fall by the holding portions provided on both sides of the bottom plate, and the oil storage device is fixed to the slide block set by combining the fixing portions provided on both ends of the bottom plate and the cover. and, the oil storage unit stores the antifriction oil hollow groove of the sliding block body, through holes provided between the hollow groove and sliding block body end face, antifriction oil in the hollow groove of the oil storage device The oil-containing material composed of a material having capillary action is configured to guide the lubricating oil to the lubrication position where the plate and the cover are combined to lubricate the rolling body. .
Furthermore, the present invention provides the above-described linear guide with a self-lubricating system, wherein the oil-containing material is made of a material such as felt, cotton flannel, cocoon (or shoreline), high-density oil-resistant cocoon, or sponge. The unit is located in the oil storage device, and the lubricant oil is led out from the oil storage device.
Furthermore, the present invention is characterized in that, in the above-described linear guide with a self-lubricating system, the oil-containing material placed in the oil storage device is branched, and the branched oil-containing material is arranged at the lubricating position of the rolling body. To do.
The present invention, in the above-mentioned self-lubrication system with linear guide, an oil storage device is characterized in that consists of an oil storage tank and the bottom plate formed by molding or bonding a metal or non-metal.
Furthermore, the present invention provides a linear guide with a self-lubricating system as described above, in which a small gap is formed on the mating surface between the plate and the cover, and the anti-friction oil in the oil-containing material is caused to flow out to the circulatory turning route through capillary action. It is configured as described above.

  Since current linear guides are applied to a wide range of general industrial and precision machines, linear guides should also overcome the problems of high speed in order to respond to the trend of increasing technology speed. It is one of the problems.

  First, in order to increase the lubrication efficiency, the present invention designs a function of automatic lubrication oil amount adjustment of the self-lubricating system of the linear guide and adopts a system called a direct lubrication rolling body. In the present invention, the self-lubricating system is installed in the slide block set, and the lubricating oil is guided to the lubricating position by utilizing the capillary phenomenon of the lubricating route, and the lubricating oil is not restricted to the lubricating route and is not in a state where it flows arbitrarily. Therefore, the oil supply design of this self-lubricating system can prevent the lubricating oil from leaking out from the oil route formed by the joint surface of the cover or the plate and the slide block in the prior art.

Next, the present invention uses an oil-containing material with capillarity in the lubrication route, and there is a small gap or lubrication port on the mating surface of the plate and cover, and the lubricating oil in the oil-containing material is removed therefrom by capillary action. Turn to the revolving route. When the oil-containing material sucks in the anti-friction oil, and the oil is sufficiently infiltrated, an oil film phenomenon will naturally occur in the gap or lubrication port of the lubrication position space (ie, automatically becomes a capillary phenomenon). It goes out of the hole and flows to the turning direction route to lubricate the rolling body. The amount of oil that comes out when the rolling body of the linear guide moves at a slower speed becomes the normal amount of lubricating oil due to capillarity, and the moving rolling body is lubricated slowly with that amount of oil.
When the rolling body of the linear guide moves at a high speed, the rolling body moves to the rolling route and moves the fluid (mainly gas) in the solid, and moves the fluid (mainly in the revolving direction route) (mainly The air pressure is faster than the fluid in the lubrication position (mainly anti-friction oil), and according to the Bonori principle, the fluid pressure in the revolving route at this time is lower than the fluid pressure in the lubrication position. Lubricating oil at the position is sucked in quickly by the pressure difference, enters the turning direction route, and directly lubricates the rolling body. Therefore, the self-lubricating system in the present invention can automatically adjust the oil supply amount of the lubricating oil according to the rolling body motion speed of the linear guide. The lubrication method is a method called direct rolling body lubrication without contact, and the oil supply method is not limited in directionality, and oil can be supplied and lubricated regardless of which direction the linear guide is mounted. Further, since the oil-containing material does not contact the rolling body, it does not affect the rolling route of the rolling body.

Since the present invention has a function of extending the lubrication period during which the linear guide self-lubricating system self-lubricates, it is not necessary to design an oil storage device in the self-lubricating system and shorten the effective stroke of the linear guide. If the oil storage device of the self-lubricating system is installed on the inner surface of the slide block body of the slide block set of the linear guide, the length of the slide block set shaft will not increase and the effective stroke of the linear guide will not be shortened.
Further, in the present invention, a space that does not penetrate or penetrate the slide block body of the slide block set is installed, and the oil storage device is mounted. Lubricating oil is stored in that space, and the self-lubricating system thereby increases the capacity to store the lubricating oil. The lubrication period is extended by self-lubricating by the capillary action of the oil-containing material. Therefore, the speed limit of the linear guide is considerably increased, and the linear guide can be widely applied to high-tech and high-speed industries.

In addition, as the oil-containing material in the present invention, a material such as felt, cotton flannel, cocoon (or shoreline), high-density cocoon, or sponge can be used. This is because these materials are easy to obtain and are excellent in the ability to absorb anti-friction oil and capillarity.

FIG. 1 is a three-dimensional schematic diagram of a linear guide with a self-lubricating system according to the present invention.
The slide block set is installed on the guide 10 and slides. The slide block set mainly includes a slide block body 20, a cover 30, a plate (not shown), and an outer cover 40. A cover 30 and an outer cover 40 are installed at both ends of the slide block main body 20, and a self-lubricating system 50 is installed in the slide block set, and slides on the guide 10 according to the slide block set.

FIG. 2 is an exploded view of FIG. The figure shows the internal structure of the slide block set on the guide 10 which is rectangular. The cover 30 is installed at both ends of the slide block main body 20, and the plate 31 is installed between the cover 30 and the slide block main body 20. A complete diverting route is formed on the inner surfaces of the plate 31 and the cover 30, and the rolling body 60 diverts the diverting route.
The self-lubricating system in the present invention includes an oil storage device 52 and a lubricating route 53. The hollow groove 21 of the through hole is opened at a position that does not affect the strength in the slide block body 20 to increase the space for installing the oil storage device 52. A hole 22 is provided between the hollow groove 21 and both end faces, and the anti-friction oil in the oil storage device 52 installed in the hollow groove 21 is led out to lubricate the rolling body 60.
The present invention specially makes the lubrication route 53 a connection route between the oil storage device 52 and the lubrication position, and the lubricant oil comes out from the hole 22 and then passes through the plate 31 to the outer end surface from the inner end surface of the cover 30. Then, the rolling body 60 is lubricated by being guided from the outer end surface of the cover 30 to the lubrication position between the cover 30 and the plate 31. The present invention separately adds an outer cover 40 to the outside of the cover 30 to prevent leakage of lubricating oil and contamination. In addition, an outer cover 40 is added and brought into contact with the guide 10 so that dust is prevented from entering the slide block set by adopting a dust prevention structure in the guide 10.

FIG. 3 is a schematic diagram of a self-lubricating system according to the present invention.
The self-lubricating system mainly includes a combination of an oil storage device 52 and a lubricating route 53. The oil storage device 52 is assembled by the oil storage tank 521 and the bottom plate 527, and the holding portions 526 are installed on both sides of the bottom plate 527 so that the rolling bodies 60 in both the left and right rows are not dropped.
The lubrication route 53 is divided into three parts including oil-containing materials 531, 532 and 533. First, the anti-friction oil is led out from the oil storage tank 521 by the oil-containing material 531 in a part of the oil storage device 52 and the oil-containing material 532 in which the outer end surface of the cover 30 branches via the plate 31 is reduced. The oil-containing material 532 and 533 are connected to each other, and the oil-containing material 533 guides the lubricating oil to the lubrication position where the plate 31 and the cover (not shown) are combined. Is lubricated with it.

FIG. 4 is a schematic view of the bottom plate of the oil storage device shown in FIG. FIG. 5 is a schematic view of the oil storage device shown in FIG. 3 combined with an oil storage tank and an oil-containing material.
Holes 522 are formed at both ends of the oil storage tank 521 shown in the figure, and these holes 522 can be used as oil outlet holes and can be used as outlets for the anti-friction oil lead-out route.
In addition, it can be used as an oil inlet, and can be used as an oil inlet for replenishing anti-friction oil.
In the present invention, the oil-containing material 531 placed in the oil storage tank 521 is designed to have a large area, so that the oil supply can be continuously performed smoothly even when the amount of lubricant oil decreases. The opening of the oil storage tank 521 is combined with the corresponding groove 525 of the bottom plate 527 to form an oil storage space.
In order to be able to fix the oil storage device 52 to the slide block set, fixing parts 523 or 524 are installed at both ends of the bottom plate 527. The difference between the fixing portions 523 and 524 is that the fixing portion 523 is a continuous pin and the fixing portion 524 is a separated pin. The oil storage device 52 is fixed to the slide block set in combination with the fixing portion 523 or 524 and the cover 30 of FIG.

FIG. 6 is a schematic view of the combination of the plate of FIG. 3 and an oil-containing material.
The oil-containing material 533 shown in the drawing guides the lubricant oil to the lubrication position between the upper and lower circulation turning routes of the plate 31 and provides the lubricating ports 312 on the upper and lower sides of the lubrication position, respectively. Align through the route. When the rolling body 60 moves and passes through the rotational turning route at the position of the lubrication port 312, the rolling body 60 comes into contact with the lubricating oil that flows out directly and is lubricated. The plate 31 is also provided with a hole 311 and a fixing hole 313. The hole 311 is a hole for passing the oil-containing material 531 through the plate 31, and the fixing hole 313 is a hole for fixing the plate 31 to the cover, and completes the circulation turning route between the cover and the complete rolling body 60. The body 60 is rotated in it.

Moreover, the material of the oil storage tank 521 and the bottom plate 527 of the oil storage device 52 in the present invention is a metal or non-metallic material excellent in oil resistance, friction resistance, and high temperature resistance. The oil storage device 52 is an oil storage tank body formed by being packaged or joined so as to be sealed with such a material.

It is a linear guide solid schematic with a self-lubricating system in the present invention. FIG. 2 is an exploded view of FIG. 1. It is a self-lubricating system schematic diagram in the present invention. FIG. 4 is a schematic diagram of a bottom plate of the oil storage device in FIG. 3. It is the schematic combined with the oil storage tank and oil containing material of the oil storage apparatus in FIG. It is the schematic which combined the board and oil containing material of FIG.

Explanation of symbols

10 Guide 20 Slide block body 21 Hollow groove 22 Hole 30 Cover 31 Plate 311 Hole 312 Lubricating port 313 Fixed hole 40 Outer cover 50 Self-lubricating system 52 Oil storage device 521 Oil storage tank 522 Hole 523 Fixed portion 524 Fixed portion 525 Groove portion 526 Holding Portion 527 Bottom plate 53 Lubrication route 531 Oil-containing material 532 Oil-containing material 533 Oil-containing material 60 Rolling body

Claims (4)

In a linear guide with a self-lubricating system comprising a rectangular guide and a slide block set that slides provided on the guide,
The slide block set includes a slide block body having a hollow groove , a cover , a plate, and a rolling body ,
The cover is installed at both ends of the slide block body,
The plate is installed between the cover and the slide block body,
Form a complete diversion route on the inner surface of the plate and cover,
The rolling body is rotatably placed between the guide and the slide block set,
The slide block set is provided with a self-lubricating system that adjusts the oil supply amount of the anti-friction oil according to the motion speed of the rolling body,
The self-lubricating system includes an oil storage device and a lubrication route;
The oil storage device is composed of an oil storage tank and a bottom plate, and the right and left rolling bodies are held so as not to fall by holding portions provided on both sides of the bottom plate, and the fixing portions provided at both ends of the bottom plate are combined with the cover. Fixing the oil storage device to the slide block set,
The oil storage device is installed in a hollow groove of the slide block body to store the anti-friction oil,
Through the hole provided between the hollow groove and the end surface of the slide block main body , the lubricant oil in the hollow groove of the oil storage device is derived ,
Lubricating route is a material containing oil of capillarity, the oil comprises material is derived into the lubricating position to align the anti-friction oil and the plate and the cover, characterized in that constitutes the rolling bodies so as to lubricate,
Linear guide with self-lubricating system.   The linear guide with a self-lubricating system according to claim 1, wherein the oil-containing material is a material such as felt, cotton flannel, cocoon (or shoreline), high-density oil-resistant cocoon or sponge, A linear guide with a self-lubricating system, characterized in that part of it is in the oil storage device and the lubricant oil is led out from the oil storage device. In the linear guide with voluntary lubrication system of claim 1, and characterized in that a oil containing material is placed in an oil storage unit is branched, the oil includes materials that are branched to the lubrication positions of said rolling body Linear guide with self-lubricating system.   The linear guide with a self-lubricating system according to claim 1, wherein the lubricating position in the inside is a small gap on the surface where the plate and the cover are mated, and the anti-friction oil in the oil-containing material is turned around by capillary action. Linear guide with self-lubricating system, characterized by being directed to the route.

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