CN201149037Y

CN201149037Y - Rolling guide rail pair

Info

Publication number: CN201149037Y
Application number: CNU2007201186357U
Authority: CN
Inventors: 李一前; 李敬宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-02-15
Filing date: 2007-02-15
Publication date: 2008-11-12
Anticipated expiration: 2017-02-15

Abstract

The utility model discloses a rolling guide rail pair, comprising guide rails and a sliding block. The guide rails comprise guide rail bodies and steel rails which are embedded on the guide rail bodies; the sliding block comprises a sliding block body, two end covers, at least two rows of bearing rolling balls and a rolling groove which is embedded on the sliding block body; and the steel rails and a rolling way of the rolling groove are arc-shaped grooves. The arc-shaped grooves can increase the contact surfaces between the rolling way and the rolling balls, reduce the contact stress between the two, greatly improve the bearing ability and prolong the service life of the rolling guide rail pair. Compared with the cylindrical steel bar rails, the rolling guide rail pair is provided with the groove-shaped steel rails with the arc-shaped grooves and the rolling groove, the appearance size is small, the weight is light, the consumption of materials is low; furthermore, the rolling guide rail pair can be formed by cold drawing, the manufacturing process is simple and the production cost is low.

Description

Rolling guide-rail pairs

[technical field]

The utility model relates to the precision machinery technology field, relates in particular to a kind of rolling guide-rail pairs of inlaying the hard raceway on the base material of guide rail and slide block.

[background technique]

Put into some balls between guiding element and the movement parts and make the not direct guiding pairs of contact of two slideway matching holding, be called rolling guide-rail pairs.The characteristics of rolling guide-rail pairs are that surface friction drag is little, the motion light and flexible; It is little to wear and tear, and can keep precision for a long time; Dynamic and static friction factor difference is little, is not prone to " creeping " phenomenon during low speed, so the motion uniform and stable.Therefore, rolling guide-rail pairs require trace to move and pinpoint equipment on, obtain increasingly extensive utilization.

The guide rail of traditional rolling guide-rail pairs and slide block all are to make with alloyed steel, and through Overheating Treatment and accurate grinding, the course of working complexity, manufacture cost is higher.

Publication number is that the Chinese invention patent ublic specification of application " a kind of linear rolling track " of CN 1369651A has disclosed a kind of new technological scheme: guide rail and slide block extrusion modling, the arc groove of inlaying raceway is arranged on it, and each raceway on guide rail and the slide block all is embedded in the above-mentioned groove with a pair of cylindrical steel rods through hardening and constitutes.Though this technological scheme has been simplified production technology, reduced cost of production, but, all very little as the ball of rolling element with radius of curvature as the cylindrical steel rods outer surface of raceway, form the some contact each other, contact stress is very big, and bearing capacity is poor, has a strong impact on the working life of rolling guide-rail pairs.

[summary of the invention]

It is simple that the technical problems to be solved in the utility model provides a kind of manufacturing process, low production cost, and the raceway contact stress is little, bearing capacity height, the rolling guide-rail pairs of long service life.

The technical problem that the utility model further will solve provides a kind of lightweight rolling guide-rail pairs.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is, a kind of rolling guide-rail pairs comprises guide rail and slide block, and described guide rail comprises guide rail body and is embedded in rail on the guide rail body; Described slide block comprises slide block body, 2 end caps, at least 2 row carrying balls and is embedded in rolling groove on the slide block body that the raceway of described rail and rolling groove is the groove of circular arc.

Above-described rolling guide-rail pairs, described ball are preferably 4 row, and described score-rail and rolling groove respectively are 2, and 2 row raceways are arranged on every score-rail and the rolling groove.

Above rolling guide-rail pairs is characterized in that, described score-rail can be the A font, and described rolling groove can be W shape.

Above-described rolling guide-rail pairs, the base material of described guide rail body and slide block body is aluminum alloy preferably.

Above-described rolling guide-rail pairs, the angle of the best same level direction of direction that ball is stressed are 40 to 50 degree.

Above-described rolling guide-rail pairs, described end cap comprises the reverser of ball, and the both sides of described slide block body have with the isometric cover plate of slide block body, and the inboard of described cover plate constitutes back the pearl passage with the outer side surface fastening of slide block body.

Above-described rolling guide-rail pairs, described cover plate inwardly stretches out, and constitutes the following retainer of ball.

Above-described rolling guide-rail pairs also comprises the holder of ball in slide block.

Above-described rolling guide-rail pairs has grease fitting on end cap, have accumulator is arranged in the end cap.

The raceway that the utility model is embedded in the score-rail on the guide rail body and is embedded in the rolling groove on the guide rail body all adopts the groove of circular arc, the groove of circular arc can adopt with the approaching radius of curvature of ball, greatly increased raceway with the surface of contact between the ball, reduce contact stress between the two, greatly improved the bearing capacity and the working life of rolling guide-rail pairs.The utility model has the score-rail of arc-shaped groove to be compared with the cylindrical steel rods track with rolling groove, and boundary dimension is little, and is in light weight, and consumable material is few, and can the cold-drawn moulding, and manufacturing process is simple, low production cost.

The utility model then can improve the bearing capacity and the working life of rolling guide-rail pairs further as adopting 4 row balls.

The base material of guide rail body of the present utility model and slide block body such as employing are aluminum alloys, can also reduce the weight and the cost of production of product.

[description of drawings]

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the utility model rolling guide-rail pairs embodiment's a outline drawing.

Fig. 2 is the exploded view of the utility model rolling guide-rail pairs embodiment when being inverted.

Exploded view when Fig. 3 is the inversion of the utility model rolling guide-rail pairs embodiment slide block.

Fig. 4 the utility model rolling guide-rail pairs embodiment's sectional view.

[embodiment]

To the embodiment of the utility model rolling guide-rail pairs shown in Figure 4, comprise guide rail and the slide block 17 that can on guide rail, slide at Fig. 1.Guide rail is made up of with the score-rail 15 that is embedded in 2 two raceway A fonts on the guide rail body 14 guide rail body 14 of aluminum alloy; 7,2 end caps of rolling groove of the 2 piece two raceway W shapes of slide block 17 by the slide block body 1 of aluminum alloy, on being embedded in the slide block body and 4 row balls 13 etc. are formed; The raceway of score-rail 15 and rolling groove 7 all is the arc-shaped groove that cooperates with ball.

The ball reverser that labyrinth 2 that plastics make and circulator 4 are formed is housed on the end cap at slide block body 1 two ends, and be equipped with the isometric plastic cover plate 5 of slide block body 1 both sides of slide block body 1.There are 2 road grooves the inboard of cover plate, constitutes back pearl passage 18 with 2 road groove combination of the outer side surface of slide block body.Ball reverser on the end cap has constituted the closed-circuit circuit system of ball with time pearl passage 18 of the inboard of cover plate.

For the ease of dismounting, inwardly stretch out the lower end of cover plate 5, withstands on the bottom of ball row, has constituted the following retainer of ball.The holder 6 of ball also is housed in slide block.In disassembly process, the ball in the slide block can not be scattered like this.

For rolling guide-rail pairs is lubricated, on the cover plate 9 of end cap, grease fitting 11 is housed, sponge accumulator 8 is housed having between cover plate 9 and the labyrinth 2.

As shown in Figure 4, present embodiment rolling guide-rail pairs, the angle of the stressed direction same level direction of every row ball are 45 degree, and the rolling guide-rail pairs load of bearing 4 directions is equal like this, has improved the load ability to bear.

The utility model has following advantage:

The utility model is embedded in the score-rail on the guide rail body and is embedded on the slide block body The raceway of rolling groove has all adopted the groove of circular arc, and the groove of circular arc can adopt with ball and connect Near radius of curvature increased raceway with the contact-making surface between the ball, reduced between the two Contact stress, bearing capacity and the service life of greatly improving rolling guide-rail pairs.

The utility model adopts 4 row balls, and 4 row ball stress equalizations, and accumulator has simultaneously Self-lubricating function, bearing capacity and the service life that can improve rolling guide-rail pairs.

The base material of guide rail body of the present utility model and slide block body adopts aluminium alloy, remaining part Adopt working of plastics more, can reduce weight and the production cost of product, compare with the steel product, Weight reducing 70%. Aluminium matter slide block is in light weight, and inertia is little, and staring torque is little, and movement velocity can Reach 1.5 times of equal specification steel slide block.

Main parts size of the present utility model all can adopt the processing of mould molding technology, adds work efficiency The rate height, the process energy consumption is low, no waste material and pollution, cost is low, and quality consistency is good, easily In assembling.

Claims

1. a rolling guide-rail pairs comprises guide rail and slide block, and described guide rail comprises guide rail body and the rail that is embedded on the guide rail body; Described slide block comprises slide block body, 2 end caps, at least 2 row carrying balls and is embedded in rolling groove on the slide block body, it is characterized in that the raceway of described rail and rolling groove is the groove of circular arc.

2. rolling guide-rail pairs according to claim 1 is characterized in that, described ball is 4 row, and described score-rail and rolling groove respectively are 2, on every score-rail and the rolling groove 2 row raceways are arranged.

3. rolling guide-rail pairs according to claim 2 is characterized in that, described score-rail is the A font, and described rolling groove is a W shape.

4. according to the described rolling guide-rail pairs of arbitrary claim in the claim 1 to 3, it is characterized in that the base material of described guide rail body and slide block body is an aluminum alloy.

5. according to the described rolling guide-rail pairs of arbitrary claim in the claim 1 to 3, it is characterized in that the angle of the direction same level direction that ball is stressed is 40 to 50 degree.

6. according to the described rolling guide-rail pairs of arbitrary claim in the claim 1 to 3, it is characterized in that, described end cap comprises the reverser of ball, the both sides of described slide block body have with the isometric cover plate of slide block body, and the inboard of described cover plate constitutes back the pearl passage with the outer side surface fastening of slide block body.

7. rolling guide-rail pairs according to claim 6 is characterized in that described cover plate inwardly stretches out, and constitutes the following retainer of ball.

8. according to the described rolling guide-rail pairs of arbitrary claim in the claim 1 to 3, it is characterized in that, in slide block, also comprise the holder of ball.

9. according to the described rolling guide-rail pairs of arbitrary claim in the claim 1 to 3, it is characterized in that grease fitting is arranged on end cap, have accumulator is arranged in the end cap.