CN111237336B

CN111237336B - Linear guide rail pair for long-term oil supply

Info

Publication number: CN111237336B
Application number: CN202010022377.2A
Authority: CN
Inventors: 张康东; 楼鑫鑫; 其他发明人请求不公开姓名
Original assignee: Zhejiang Machinery Of Pheako Co ltd
Current assignee: Zhejiang Machinery Of Pheako Co ltd
Priority date: 2020-01-09
Filing date: 2020-01-09
Publication date: 2021-04-30
Anticipated expiration: 2040-01-09
Also published as: CN111237336A

Abstract

The invention provides a linear guide rail pair for supplying oil for a long time, which comprises a linear guide rail pair, wherein the linear guide rail pair comprises a guide rail and a sliding block, a rolling ball is arranged between the guide rail and the sliding block, the relative motion of the guide rail and the sliding block is realized by the rolling ball, the sliding block comprises an upper bottom surface and two side surfaces, two ends of the sliding block are provided with end shells, the sliding block is provided with an infinite circulating channel matched with the end shells, the rolling ball rolls in the infinite circulating channel in an infinite circulating mode, the sliding block is provided with an oil storage device, the oil storage device is arranged on the upper bottom surface of the sliding block, the oil storage device is arranged on a sliding pair main body serving as an upper retainer, one surface of the sliding pair main body facing the sliding block is provided with a sunken oil storage groove, the other surface of the sliding pair main body faces the guide rail surface, the sliding pair. The oil storage warehouse has a simpler structure, can achieve a better oil storage effect and a larger oil storage amount, and can achieve the effect of long-term trace oil supply.

Description

Linear guide rail pair for long-term oil supply

Technical Field

The invention relates to the field of guide rails, in particular to a linear guide rail pair for long-term oil supply, which relates to a slide block guide rail.

Background

The slider guide rail structure and function, as disclosed in patent publication No. CN110081079A, the slider moves on the guide rail, and the slider has a rolling ball therein, and the rolling ball slides in contact with the guide rail, increasing the slidability. Lubrication is of course maintained by oiling.

The slide block guide rail is a structure that the slide block moves on the guide rail, a rolling ball is arranged in the slide block, and the rolling ball slides in contact with the guide rail, so that the sliding property is improved. Lubrication is of course maintained by oiling. For example, patent publication No. CN1369651A discloses a linear rolling guide, which is composed of a guide rail, a slider, rolling elements, and ball returning devices, wherein the rolling guide can bear load by means of the rolling elements, and can realize precise linear movement on the guide rail, the guide rail and the slider are both provided with raceways, the rolling elements are filled between the raceways of the guide rail and the slider, the rolling elements extruded from one end of the raceway of the slider are reversed by the ball returning devices installed at one end of the slider, pass through the ball returning channel, and then pass through the ball returning devices at the other end of the slider, and return to the other end of the raceway of the slider, thereby forming a cycle.

An improved linear guide positioning structure disclosed in patent publication No. CN2603485Y also discloses structures such as guide rails, sliding blocks, rolling elements, ball returning devices, etc.

The existing oil storage mode has the following common mode,

as shown in patent publication No. CN106812795A, a resin sliding pair is provided on the bottom surfaces of the guide rail and the slider, and an oil storage groove can be scraped or carved on the contact surface between the resin sliding pair and the top surface of the guide rail bar, and this oil storage groove is a reverse carved oil storage with a small oil storage capacity. The friction loss of the resin sliding pair is large.

For example, patent No. CN109185335A discloses that an oil storage box is arranged on the end shell of the slider, and the rolling balls are stained with lubricating oil/grease one by one after passing through the oil storage box.

For example, in patent No. CN108506340A, oil reservoirs are provided on the side walls of the slider cover and the slider, the slider cover can be formed at one time during injection molding, but it is very difficult to process the oil reservoir on the metal slider and then radially re-open the slot holes connected to the rolling balls.

Disclosure of Invention

The invention aims to solve the technical problem of providing a linear guide rail pair which has large oil storage capacity, long lubrication time and convenient manufacture and can supply oil for a long time.

The technical scheme adopted by the invention for solving the technical problems is as follows: a long-term oil-supplying linear guide rail pair comprises a guide rail and a slide block arranged on the guide rail and sliding, wherein the slide block is provided with a plurality of groups of rolling balls which are contacted with the guide rail and comprises an upper bottom surface and two side surfaces,

the sliding block is characterized in that a sliding pair main body is arranged on the upper bottom surface of the sliding block and fixed on the sliding block, a sunken oil storage groove is formed in one surface, facing the sliding block, of the sliding pair main body, the other surface of the sliding pair main body faces the surface of the guide rail, the sliding pair main body is in contact with a rolling ball in the sliding block, a through hole penetrating through the sliding pair main body is communicated to the oil storage groove, and the through hole faces the rolling ball.

Furthermore, arc edges are arranged on two sides of the sliding pair main body.

Furthermore, an arc-shaped groove is formed in the sliding block, and the arc-shaped edge and the arc-shaped groove form an upper rolling ball hole.

Furthermore, the rolling ball slides in the upper rolling ball hole, the arc edge is in contact with the rolling ball, and the arc edge is provided with a through hole.

Furthermore, a plurality of arrays of through holes are arranged in each arc-shaped edge.

Furthermore, the direction of the through hole array is the same as the linear rolling direction of the rolling ball.

Furthermore, end shells are arranged at the front end and the rear end of the sliding block, an oil channel for storing oil is arranged on one surface, facing the sliding block, of each end shell, and an oil filling nozzle is arranged on each end shell and communicated to the oil channel.

Furthermore, the length of the sliding pair main body is not less than the length of the sliding block, the two ends of the sliding pair main body are provided with receiving grooves which are communicated with the oil storage groove, the receiving grooves extend into the end shell of the sliding block, an oil passage is arranged in the end shell of the sliding block, and the oil passage is in butt joint with the receiving grooves.

Furthermore, a reinforcing rib is arranged in an oil storage tank of the sliding pair main body.

Furthermore, the reinforcing ribs are provided with notches for circulating lubricating oil/grease.

Furthermore, the sliding pair main body is connected with the sliding block through a screw, a screw hole is formed in the sliding pair main body, a containing groove is formed in one surface, facing the guide rail, of the sliding pair main body, the screw tail of the screw is hidden in the containing groove, a raised boss is arranged in the oil storage groove, and the screw head penetrates through the boss and then is connected with the sliding block.

Furthermore, the diameter of the through hole is 0.1 mm-4 mm, or the width of the through hole is 0.1 mm-4 mm.

Furthermore, the sliding pair main body material is PPS plastic, or a composite material of nylon and glass fiber, or a composite material of nylon and carbon fiber, or a carbon fiber reinforced composite material, or a composite material of molybdenum disulfide and polyformaldehyde, or a composite material of polyformaldehyde and aluminum alloy metal powder, or a composite material of polyformaldehyde and graphene, or a graphene material.

Compared with the prior art, the oil storage warehouse has a simpler structure, and can achieve better oil storage effect and larger oil storage capacity.

The through holes are slowly infiltrated, the through holes with smaller apertures are adopted, the oil can not flow out under the action of the tension of lubricating oil/grease when the rolling ball is static, the oil can be infiltrated under the action of vibration force, meanwhile, the through holes can be blocked by the rolling ball, and the lubricating oil/grease can be directly adhered to the surface of the rolling ball. The effect of long-term trace oil supply can be achieved.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the background art and explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

FIG. 1 is a schematic view of the present invention with the end shell removed;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic view of a sliding pair body in a first state;

FIG. 4 is a bottom view of the sliding pair body;

FIG. 5 is a schematic view of the sliding pair body in a second state; (ii) a

In the figure: 1, end shell; 2, an oil filling nozzle; 3 rolling ball holes; 4, rolling balls are arranged on the upper part; 5, a guide rail; 6, an oil storage tank; 7, a bearing groove; 8 sliding pair main body; 9, a lower rolling ball; 10, a slide block; 10-1, upper bottom; 11 connecting the threaded hole; 12 a lower retainer; 13 lower rolling ball holes; 14 rolling ball holes; 15 arc-shaped edges; 15-1 through holes; 16 reinforcing ribs; 17 a boss; 18 notches; 19 are placed in the receiving grooves.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the invention.

It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

As shown in figure 1, the invention comprises a linear guide rail pair, wherein the linear guide rail pair comprises a guide rail 5 and a slide block 10, a rolling ball is arranged between the guide rail 5 and the slide block 10, and the relative motion of the guide rail 5 and the slide block 10 is realized through the rolling ball. Two ends of the sliding block 10 are provided with end shells, and the sliding block 10 is provided with an upper two groups of infinite circulation channels and a lower two groups of infinite circulation channels which are matched with the end shells. The rolling balls are arranged in the infinite circulation path, and the rolling balls are connected end to realize infinite circulation rolling. As prior art, the end shell also serves as a return device, and the rolling ball can turn around after passing through the end shell, so that the rolling ball can be connected end to end.

Specifically, the slider 10 includes two side surfaces and an upper bottom 10-1 surface, the two side surfaces are clamped on the guide rail 5, and the upper bottom 10-1 surface faces the upper surface of the guide rail 5. Two ends of the sliding block 10 are provided with end shells 1, the end shells 1 are provided with oil filling nozzles 2, and the oil filling nozzles 2 are communicated with an oil duct in the end shells 1.

The infinite circulation path comprises a sliding block 10 provided with a through rolling ball hole 3, the rolling ball groups connected end to end are arranged in the rolling ball hole 3, and the rolling balls can also pass through an oil duct or an oil storage cavity of the end shell and are contaminated by lubricating oil/grease. However, since the rolling ball rolls at an excessively long distance, grease is lost on the guide rail 5 when the rolling ball rubs against the guide rail 5, and a lubrication part needs to be arranged again.

As shown in fig. 2, when viewed from the cross section of the slider 10, the rolling ball components are the upper rolling ball 4 and the lower rolling ball 9, the machine part is connected above the slider 10, the upper rolling ball 4 is in contact with the guide rail 5 under pressure, the upper rolling ball 4 is the most stressed rolling ball, so that the amount of lubricating oil/grease is large, and the lower rolling ball 9 is in contact with the side edge of the guide rail 5 and only has a collision effect, so that the oil consumption is small, and only the oil consumption of the oil channel of the conventional end housing 1 is needed.

Specifically, a C-shaped arc-shaped groove on the sliding block 10 and the lower retainer 12 form a lower rolling ball hole 13, and the lower rolling ball 9 is positioned in the lower rolling ball hole 13. The slider 10 is shaped like a rectangle, the upper bottom 10-1 is provided with a sliding pair main body 8, the two sides of the sliding pair main body 8 are provided with arc edges 15, the arc edges 15 and the C-shaped arc-shaped groove on the slider 10 form an upper rolling ball hole 14, and the upper rolling ball 4 is arranged in the upper rolling ball hole 14. The arc-shaped edge 15 of the sliding pair main body 8 also serves as an upper retainer.

Specifically, the sliding pair main body 8 is fixed with the slider 10, the length of the sliding pair main body 8 is not less than the length of the slider 10, for example, when the linear guide rail 5 is used, the length direction of the sliding pair main body 8 is consistent with the extending direction of the guide rail 5, one surface of the sliding pair main body 8 facing the slider 10 is provided with the concave oil storage tank 6, and the other surface of the sliding pair main body 8 faces the surface of the guide rail 5.

Specifically, as shown in fig. 3 and 4, the arc-shaped edge 15 of the sliding pair main body 8 is provided with a plurality of through holes 15-1, and the through holes 15-1 are arranged along the sliding direction of the rolling ball. The through hole 15-1 will guide the lubricating oil/grease in the oil reservoir 6 to the rolling ball surface. Preferably, the through hole 15-1 is a circular hole with the diameter of 0.03-0.5 times multiplied by D (diameter of the rolling ball); or the diameter of the through hole 15-1 is 0.03-0.5 times multiplied by D (rolling ball diameter) and is larger than 0.1 mm. This is to maintain a minute amount of oil supply for a long period of time. The through hole 15-1 with small diameter makes the lubricating oil not flow out under the action of surface tension, and the rolling ball is blocked on most of the through hole 15-1 to prevent the lubricating oil from falling. Of course, vibration occurs when the rolling ball rolls, so that the surface tension of the lubricating oil is broken and the lubricating oil is oozed out from the through hole 15-1.

Preferably, the through-opening 15-1 abuts against the bottom of the oil reservoir 6, so that the lubricant/grease can flow through as far as possible. The middle of the bottom of the oil storage tank 6 is convex and inclined to two sides, and the lubricating oil/grease flows to two sides.

For another example, it is difficult to form the through hole 15-1 on the arc-shaped edge 15, so that the plane of the sliding pair main body 8 can be used as a positioning plane, and the through hole 15-1 is formed on the arc-shaped edge 15 along the bottom surface of the sliding pair main body 8. As shown in fig. 5.

The sliding pair main body 8 needs to be filled with lubricating oil/grease, preferably, two ends of the sliding pair main body 8 are provided with the receiving grooves 7, the receiving grooves 7 are communicated with the oil storage tank 6, the length directions of the receiving grooves 7 extend out from two ends of the sliding block 10, the receiving grooves 7 extend into the end shell 1 of the sliding block 10, and the oil duct in the end shell 1 is in butt joint with the receiving grooves 7. The end shell 1 enters an oil duct through an oil inlet of the oil injection nozzle, and lubricating oil/grease in the oil duct flows into the oil storage tank 6 again.

Preferably, a reinforcing rib 16 is arranged in the oil storage tank 6 of the sliding pair main body 8, the reinforcing rib 16 divides the oil storage tank 6 into a left side and a right side, each side is divided into a plurality of grids, and a notch 18 is arranged on the reinforcing rib 16 and used for circulating lubricating oil/grease, so that the lubricating oil/grease can be distributed in the whole receiving groove 7.

In connection between the slide pair main body 8 and the slider 10, it is preferable that the slide pair main body 8 is provided with a screw hole by screwing, the slide pair main body 8 is provided with an accommodating groove 19 on a surface facing the guide rail 5, and a screw end of the screw is hidden in the accommodating groove 19 to prevent the screw end from touching the slider 10. The oil storage tank 6 is provided with a raised boss 17, the screw head passes through the boss 17 and then is connected with the slide block 10, and the top surface of the boss 17 is abutted against the upper bottom 10-1 of the slide block 10.

The main body 8 of the sliding pair is mainly made of light materials, and the wear resistance and the lubricating property are both considered. Therefore, the composite material can be PPS plastic, or a composite material of nylon and glass fiber, or a composite material of nylon and carbon fiber, or a carbon fiber reinforced composite material, or a composite material of molybdenum disulfide and polyformaldehyde, or a composite material of polyformaldehyde and aluminum alloy metal powder, or a composite material of polyformaldehyde and graphene, or a graphene material.

In use, the machine is fixed on the connecting threaded hole 11 of the sliding block 10, the machine gives pressure to the sliding block 10 towards the guide rail 5, the upper rolling ball 4 is subjected to main pressure, and the sliding block 10 is also supported by the upper rolling ball 4. The upper rolling ball 4 needs a larger lubricating property, so the invention adopts the oil collection and supply on the sliding pair main body 8, and the lubricating oil/grease can be added according to the directionality of the guide rail 5. The sliding pair main body 8 is provided with a through hole 15-1 along the linear rolling direction of the upper rolling ball 4, and the oil quantity injected into the rolling ball each time is proper and the range is long, so that the sliding pair main body can be used for a long time. The vibration of the sliding block 10 and the rolling ball can drive the lubricating oil/grease to fall down when rolling, and the lubricating oil/grease can not flow out under the action of the caliber of the through hole 15-1 and the liquid tension when not in use. The upper rolling ball 4 is contacted with the arc-shaped edge 15 of the sliding pair main body 8 and can also block the through hole 15-1.

The sliding pair main body 8 needs to be filled with lubricating oil/grease, preferably, the two ends of the sliding pair main body 8 are provided with receiving grooves 7, the receiving grooves 7 are communicated with the oil storage groove 6, the receiving grooves 7 extend into the end shell of the sliding block 10, and an oil duct or an oil storage cavity in the end shell is butted with the receiving grooves 7. The length L of the sliding pair main body 8 is more than L1 (the length of the sliding block 10) -D (the diameter of the rolling ball)/2, or L is more than L1 the length of the sliding block 10) -0.2 mm. The oil channel of the bearing groove 7 inserted into the end shell 1 can be conveniently filled with oil, and the oil filling structure of the sliding pair main body 8 can be simple.

The present invention has been described in detail, and the principles and embodiments of the present invention have been described herein using specific examples, which are provided only to assist in understanding the present invention and the core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. Linear guide rail pair of long-term fuel feeding, its characterized in that, it includes: the linear guide rail pair comprises a guide rail and a slide block, a rolling ball is arranged between the guide rail and the slide block, the relative motion of the guide rail and the slide block is realized through the rolling ball,

the sliding block comprises an upper bottom surface and two side surfaces, end shells are arranged at two ends of the sliding block, an infinite circulation channel matched with the end shells is arranged on the sliding block, the rolling ball rolls in the infinite circulation channel in an infinite circulation manner,

the sliding block is provided with an oil storage device which is arranged on the upper bottom surface of the sliding block, the oil storage device is arranged on a sliding pair main body which is used as an upper retainer, one surface of the sliding pair main body facing the sliding block is provided with a sunken oil storage groove, the other surface of the sliding pair main body faces the surface of the guide rail, the sliding pair main body is contacted with the rolling ball in the sliding block, the sliding pair main body is provided with a through hole which is communicated with the oil storage groove and faces the rolling ball,

the sliding block is characterized in that end shells are arranged at the front end and the rear end of the sliding block, an oil duct for storing oil is arranged on one surface of each end shell facing the sliding block, an oil filling nozzle is arranged on each end shell and communicated to the oil duct, receiving grooves are arranged at the two ends of the sliding pair main body and communicated with the oil storage grooves, the receiving grooves extend into the end shells of the sliding block, the oil ducts are arranged in the end shells of the sliding block, and the oil ducts are in butt.

2. The long-term oil supply linear guide rail pair as claimed in claim 1, wherein the sliding pair body is provided with arc-shaped edges at both sides, the slider is provided with an arc-shaped groove, the arc-shaped edges and the arc-shaped groove form an upper rolling ball hole, the rolling ball rolls in the upper rolling ball hole, the arc-shaped edges contact with the rolling ball, and the arc-shaped edges are provided with through holes.

3. The long term oil fed linear guide pair of claim 2 wherein each arcuate edge has an array of through holes therein.

4. The long-term oil-feeding linear guide pair as claimed in claim 1, wherein the length L of the sliding pair main body is greater than the length L1 of the slider to the diameter D/2 of the rolling ball, or the length L of the sliding pair main body is greater than the length L1 to 0.2mm of the slider.

5. The long term oil feeding linear guide pair as set forth in claim 1, wherein a reinforcing rib is provided in the oil storage groove of the sliding pair body.

6. The long term oil fed linear guide pair of claim 5 wherein said ribs are notched for the flow of lubricant/grease.

7. The long-term oil supply linear guide rail pair as claimed in claim 1, wherein the sliding pair main body is connected with the sliding block through a screw, the sliding pair main body is provided with a screw hole, one surface of the sliding pair main body facing the guide rail is provided with an accommodating groove, a screw tail of the screw is hidden in the accommodating groove, a raised boss is arranged in the oil storage groove, and a screw head passes through the boss and then is connected with the sliding block.

8. The long-term oil supply linear guide rail pair as claimed in claim 1, wherein the diameter of the through hole is 0.03-0.5 times the diameter of the rolling ball; or the diameter of the through hole is 0.03-0.5 times the diameter of the rolling ball and is larger than 0.1 mm.

9. The long-term oil supply linear guide rail pair as claimed in claim 1, wherein the sliding pair main body is made of PPS plastic, or a composite material of nylon and glass fiber, or a composite material of nylon and carbon fiber, or a carbon fiber reinforced composite material, or a composite material of molybdenum disulfide and polyformaldehyde, or a composite material of polyformaldehyde and aluminum alloy metal powder, or a composite material of polyformaldehyde and graphene, or a graphene material, and the sliding pair main body is formed by metal injection molding, or the sliding pair main body is formed by plastic injection molding.