CN2723759Y

CN2723759Y - Rail structure for linear movement guide device

Info

Publication number: CN2723759Y
Application number: CN2004200778077U
Authority: CN
Inventors: 郑镇克
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-07-11
Filing date: 2004-07-12
Publication date: 2005-09-07
Anticipated expiration: 2014-07-12
Also published as: KR200330206Y1

Abstract

The utility model relates to a rail structure for a linear movement guide device. In the linear movement guide device, a plurality of roller components positioned on the bottom surface of a sliding part linearly move along a shaft lever in the form of round lever arranged in the direction of track length, and an upward open slot is formed along the direction of the track length. Guiding parts in the form of ' >' are formed on the inner walls of the two sides of the open slot, and the guiding parts are correspondingly inwards concave. The guiding parts are respectively glidingly contacted with combined slot parts, and the sliding part is in linear motion. The combined slot parts of an outside contact surface are formed on the circumferential surfaces of the rollers of the roller components. In the utility model, the shaft lever for the roller components of the sliding part moving is not arranged, only the track is formed through a stretching working procedure, and then the guiding parts which are in the form of ' >' and the same as the shaft lever are in an integral forming. Because of the shaft lever not required, the utility model has the advantages of high efficiency, simple method, low manufacturing cost and improved dimensional precision and running accuracy.

Description

The track structure of linear movement guide device

Technical field

The utility model relates to a kind of track structure of linear movement guide device, the mode that is specifically related to a kind of axostylus axostyle by shifting roller and track (shaft) sliding contact makes slide part do straight-line structure, shifting roller is not to slide along axostylus axostyle (shaft) in this structure, but directly pass through slide, thereby increase work efficiency, simplify working process, and greatly reduce manufacture cost.

Background technique

Usually, linear motion device (below be called linear movement guide device) is mainly used in the automation equipment of assembling part etc., on the one hand, connected element is moved when doing straight line motion easily, and make and travel and locate more accurately, and on the other hand, can keep long stability and speed, therefore, generally be used for equipment such as industrial robot.

In addition, described linear movement guide device according to its structural feature, multiple type of service occurred at present, and its purposes also becomes more and more wider.

That is, structure open and that come into operation comprises: mobile pulley carries out straight-line structure by the rotation combination of ball screw; Mobile pulley combines with the upper end of guiding device by bearing, and does structure that straight line moves etc. by the driving force of transmission device etc.

In described structure, the former is set side by side with ball screw on the outer side track of linear movement guide device, and the inner pulley (mobile pulley) that this ball screw is slided combines with outer side track by ball, and is formed with electric machine support and sheet metal (plate) respectively in forward end and rear end side.

But there is following some problem in described structure: because therefore contact structures in the ball-shaped grooving of inner pulley are easier to come off, in addition, produce in the bigger surface friction drag when mobile, can not guarantee stable retention force etc. when inner pulley moves.

And, in order to solve described problem, move mode was as shown in Figure 1 once proposed, promptly, the fixing axostylus axostyle of circular bar shape (shaft) 20 alongst in the both sides of rectilinear orbit 10, in the both sides, bottom surface of the slide part 30 that moves, the roller bearing 40 with described axostylus axostyle 20 sliding contacts and rotation is set.But said structure still exists when fixing axostylus axostyle in orbit to make axostylus axostyle expose the problem of certain width.

In other words, there are the following problems, promptly is fixed for the axostylus axostyle 20 of guide roller bearing 40 in the both sides of certain interval track 10, then needs to be used for fixing the groove of described axostylus axostyle, and, also should guarantee the homogeneity of above-mentioned groove when processing this groove.In addition, insert on described groove or inlay after the axostylus axostyle 20, need fix with bolt, at this moment, if operate surpassing certain interval, then thermal distortion etc. can take place, axostylus axostyle 20 is easy to break away from from track 10, thereby influence the mobile of slide part 30.

The model utility content

The utility model is to propose in order to address the above problem, the purpose of this utility model is to provide a kind of track structure of linear movement guide device, it need not to install, and the Rotor block that makes slide part moves and the axostylus axostyle that is provided with, only need when making track, the one symmetry also forms "〉identical with axostylus axostyle projectedly in orbit " the shape guide portion.Owing to do not need to install axostylus axostyle, the high efficiency of its operation and the simplification of method can significantly reduce its manufacturing expense, and can improve the precision of size and the validity of travelling.

Another purpose of the present utility model is to provide a kind of track structure of linear movement guide device, and the guide portion that it will guide the Rotor block of slide part is arranged on the inboard of track, thereby has its outward appearance of when assembling effect more attractive in appearance.

To achieve these goals, in the linear movement guide device of the present utility model, the a plurality of Rotor blocks that are positioned at the slide part bottom surface are done straight line motion along the round bar shape axostylus axostyle on the length direction that is arranged on track, it is characterized in that described track alongst forms the opening slot that opening makes progress; Form corresponding mutually and outstanding to the inside be "〉on the both sides inwall of this opening slot " guide portion of shape; This guide portion respectively with combine slot part and constitute sliding contact, the outside surface of contact on the wherein said roller outer circumferential face that is formed at Rotor block in conjunction with slot part, thus make described slide part do straight line motion.

Description of drawings

Fig. 1 is the partial structurtes schematic representation of existing linear movement guide device;

Fig. 2 is the schematic representation of the track of linear movement guide device of the present utility model;

Fig. 3 is the sectional view of the state of suitable track of the present utility model.

Symbol description

100: track 120: opening slot

140: guide portion

200: slide part

300: Rotor block

Embodiment

Track structure to linear movement guide device of the present utility model describes with reference to the accompanying drawings, for the part beyond the track structure, under the situation that need not to illustrate, will omit its explanation.

As Fig. 2 or shown in Figure 3, the utility model comprises track 100, slide part 200 and Rotor block 300.Wherein, track 100 is guided straight line motions and is the rail shape; Slide part 200 is done straight line motion along described track 100; Rotor block 300 rotatably is set at the bottom surface of described slide part 200, and slides along the guide portion 140 that is arranged on the described track 100, thereby makes described slide part 200 do straight line motion.

Described track 100 is with after high carbon steel or the stretched operation of special rolling-mill section, only operation is heat-treated in the abrading section and be made, and, on its length direction, form the opening slot 120 that opening makes progress, on the inwall of the both sides of described opening slot 120, be formed with projection and corresponding mutually guide portion 140 to the inside.On one side end face of described guide portion 140, be formed centrally "〉on rounded inclined-plane up and down in the median rise point being " shape.In addition, guide portion 140 is heat-treated by methods such as high frequency, carburizing, nitrogenize after stretched operation.

Described slide part 200 is a known structure, that is, be arranged in the opening slot 120 of described track 100, and can move forward and backward, and its bottom surface has at least the Rotor block 300 more than three to arrange with the symmetry or the symmetrical manner that staggers in its both sides.

The jack shaft 320 of described Rotor block 300 is the same with known structure, is combined in the bottom surface of described slide part 200, is adjustable to certain angle when being rotated, and rotatably being combined with roller 340 in the lower end of jack shaft.And, at the outboard end of described roller 340, be formed with engagement groove 360 along its circumferential direction, and above-mentioned engagement groove 360 can closely contact, thereby can be rotated motion with the guide portion 140 of described track 100.

That is, the engagement groove 360 of roller 340 outboard ends of described Rotor block 300 contacts with the guide portion 140 formation faces that form on the opening slot 120 of described track 100, and can slide.

At this moment, described guide portion 140 be that the circular sloped surface of the upper and lower sides at center contacts with the formation of the circular sloped surface up and down face of the engagement groove 360 of described roller 340 with protuberance point, thereby when the roller 340 of described Rotor block 300 is rotated, contact, and move with guide portion 140 formation faces.

Track structure to the linear movement guide device that possesses said structure is applicable to that the state of linear movement guide device is described in detail below.

When making, at first by stretching process, and then the guide portion 140 on integrally formed opening slot 120 and its inwall on the track 100 heat-treats the outer surface of guide portion 140, so just finishes the making of track 100.Afterwards, when assembling, on described track 100, insert the slide part 200 that its bottom surface is combined with a plurality of Rotor blocks 300, thereby make the engagement groove 360 in roller 340 outsides that are formed at described Rotor block 300 closely contact and support mutually, so just finished assembling with the guide portion 140 of described track 100.Afterwards in the both sides of track 100 in conjunction with driving known belt or the belt shifter that slide part 200 moves, can finish its assembling.

The utility model effect

The track structure of linear movement guide device of the present utility model, it need not to be installed as sliding part Rotor block move and the axostylus axostyle that arranges, just need to make track also by stretching process One convexes to form "〉of the symmetry identical with axostylus axostyle in orbit " the shape guide part. Owing to do not need Axostylus axostyle is installed, and the high efficiency of operation and the simplification of method have and greatly reduce its manufacturing expense, And can improve the precision of size and the effect of the accuracy of travelling.

In addition, because will guide the inboard that the guide part of the rotor block of sliding part is arranged on track, Thereby its outward appearance effect more attractive in appearance when having assembling.

Claims

1, a kind of track structure of linear movement guide device, the a plurality of Rotor blocks that are positioned at the slide part bottom surface in this linear movement guide device are done straight line motion along the round bar shape axostylus axostyle on the length direction that is arranged on track, it is characterized in that described track alongst forms the opening slot that opening makes progress; Form corresponding mutually and outstanding to the inside be "〉on the both sides inwall of this opening slot " guide portion of shape; The engagement groove portion that is formed at the outside surface of contact on the roller outer circumferential face of Rotor block constitutes sliding contact with this guide portion respectively, and above-mentioned slide part straight line is moved.

2. the track structure of linear movement guide device according to claim 1 is characterized in that, described guide portion is integrally formed at described track and is made by stretching process.

3. according to the track structure of claim 2 or 3 described linear movement guide devices, it is characterized in that the outer surface that has only described guide portion is to be made of the heat treatment surface that prevents abrasion.