DE202011005481U1 - Linear guide system - Google Patents

Abstract

Linear guide system (1), comprising a base profile (2) having a plurality of metal sheets (3) as raceways for a carriage (4) provided with rollers (5), characterized in that at least four metal sheets (3) arranged in the base profile (2) planes are arranged such that in a first crossing region (2a) the contact surfaces (3a) for the rollers (5) are directed towards each other and that in a the first crossing region (2a) opposite the second crossing region (2b ) the contact surfaces (3a) of the rollers (5) arranged there are also directed towards each other.

Description

The invention relates to a linear guide system, with a base profile having a plurality of metal sheets as raceways for a carriage, which is provided with rollers.

Such linear guide systems are known. The concept consists of an aluminum base profile, in which steel sheets are introduced as a hard raceway, and a carriage which is supported on the raceways by means of rollers.

This is used quite widely, especially in linear motors.

Furthermore, the patent exists DE 41 02 147 The company SKF from an angled sheet, which is mounted as a prismatic guideway in a basic profile.

The same technique is used in Pacific Bearing's Integral-V Line Guide products.

However, such linear guide systems are very expensive and therefore can be produced only with great skill. In addition, the tracks are usually made of angled sheets. This makes their production very expensive.

The invention is therefore an object of the invention to provide a linear guide system of the type mentioned that simplifies the structure with technically simple means such that the manufacturing cost is reduced and at the same time the structural strength is increased.

This object is achieved according to the invention in a linear guide system of the type mentioned in that at least four metal sheets are arranged on levels crossing in the base profile such that in a first crossing region, the contact surfaces for the rollers are directed towards each other and that in a first Intersection region opposite the second crossing region, the contact surfaces of the rollers arranged there are also directed towards each other.

The essence of the invention is that unlike the prior art according to the invention only flat and not angled sheets are used. As a result, the assembly of the linear guide system is greatly simplified and thus inexpensive to produce.

It is particularly advantageous for a smooth running of the carriage when the respective rollers are arranged in the carriage so that the rollers present in the first crossing region and the second crossing region alternately contact the contact surfaces of the two metal plates arranged there as raceways. Since in this case belonging to the overall system rollers are alternately arranged against the upper and lower raceway one behind the other, is made of the guide carriage in the interior of the base profile and with its external dimensions very compact.

It is particularly advantageous if the base profile consists of an aluminum alloy or aluminum.

If the metal sheets are made of a hard metal alloy, it is possible to achieve such a smooth track, that a particularly smooth running of the rollers on these hard metal sheets is possible.

Due to the special arrangement of the rollers, it is particularly easy to adjust the rollers for optimal run. This is due in particular to the fact that all rollers are very accessible from the outside.

For long and quiet walkways, it is advantageous if the metal sheets have a length> 6 m. This makes it possible to make the shock abutting basic profiles by means of the long metal sheet seamless.

Furthermore, it is advantageous if only the carriage has a contour projecting over the basic profile profile cross-section.

Although the main material will certainly be aluminum or aluminum alloy for manufacturing and cost reasons, it is still possible for the base profile to be made of plastic, stone, wood or any combination thereof.

• – Sehr kompakte Führungseinheit
• – Hohe Systemsteifigkeit, insbesondere bezogen auf den Bauraum
• – Durch die verfügbare große Länge der Blechbänder unterbrechungsfreier Aufbau sehr langer Führungen (> 6 m) durch Stoßverbindung der Profile und durchgehende Stahlbahnen
• – Geringeres Gewicht als bei Führungen mit Rundwellen
• – Schnellere Montage durch weniger Komponenten und einfachere Spieleinstellung
• – Sehr gute Eingliederung der Achse in die Gesamtkonstruktion, da nur der Schlitten eine über den Profilquerschnitt vorstehende Kontur besitzt

Overall, the new profile according to the invention has the following advantages:

• - Very compact guide unit
• - High system rigidity, especially in relation to the installation space
• - Due to the available large length of the metal bands uninterrupted construction of very long guides (> 6 m) by butt joint of the profiles and continuous steel tracks
• - Less weight than guides with round shafts
• - Faster assembly with fewer components and easier game setting
• - Very good integration of the axis in the overall design, since only the carriage has a profile projecting over the profile cross-section

Further features and advantages of the invention will become apparent from the following description of an embodiment and from the figures, to which reference is made. Show it:

1 a cross-sectional view of the linear guide system without carriage;

2 in the l illustrated cross-sectional view with the carriage;

3 a perspective view of a complete linear guide system; and

4 a perspective view of the carriage showing the arrangement of the rollers.

Based on 1 to 4 Now is an embodiment of a linear guide system 1 described in more detail. The linear guide system now shown 1 consists of a basic profile 2 , which consists of a four-groove square base profile and an adjusted two-groove square base profile arranged one above the other.

This basic profile 2 according to 1 at its upper in the former undercut groove, in which the undercuts were removed, each on the right and left facing V-shaped surfaces a hard metal sheet 3 as a roller support. These metal sheets 3 therefore serve as a running surface for rollers 5 sitting at a sled 4 are attached.

In the embodiments shown, the basic profile 2 four metal sheets 3 on, which is based on the basic profile 2 intersecting planes are arranged such that in a first crossing area 2a , left side of 1 , Contact surfaces 3a for the rollers in this area are aligned on, on.

Accordingly, at the opposite crossing area 2 B , the contact surfaces 3a the arranged there rollers 5 arranged.

The hard metal sheets 3 are therefore arranged in a quasi-cross shape, wherein the respective outwardly facing metal sheets 3 with their contact surface 3a for the rollers 5 are also aligned to the outside.

For a particularly smooth rolling or running movement and also a very good guide, it is envisaged that in the sleigh 4 the rollers 5 are arranged so that in the first 2a and second crossing area 2 B existing rollers alternately successively the contact surfaces 3a arranged there serving as tracks metal sheets 3 alternately touching such that the front rollers 5 the pressure rollers and the four intermediate pressure-free rollers 5 are.

This applies in the first place for the illustrated embodiment, since here the metal sheets 3 in the upper part of the basic profile 2 are arranged.

Furthermore, in such an arrangement of the rollers 5 tilting in the longitudinal direction or in the direction of travel of the carriage 4 almost impossible.

Of course, the rollers shown are 5 adjustable for optimum and quiet running, always getting all eight rollers on appropriate metal sheets 3 rest or touch them.

Since the largest area in the middle of the substantially rectangular cross-section profile is a closed cavity, this is a very high torsional stiffness given.

Due to the vertical direction according to the 1 and 2 Most of the material is available for a bend, there is also a particularly high flexural rigidity.

As in 3 shown is the entire linear guide system 1 usually a leader field for a so-called medium run length. However, here are also very cheap run lengths of over 6 m possible because the metal sheets 3 may also have a run length> 6 m and thus the extensions of the individual basic profiles 2 bridge smoothly.

Due to the good integration of the axle or the basic profile 2 In the overall construction, it is possible that only the carriage can protrude beyond the profile cross section contour. This reduces the width of the entire linear system to only the width of the carriage.

The crossing angle of intersecting planes for the metal sheets 3 is of course variable and requirement-dependent. A particularly narrow and thus space-saving construction is however given if the first 2a and the second crossing areas 2 B Have angles greater than 90 °.

As a material for such a linear guide system 1 is metal, plastic, stone, wood or any combination thereof.

For reasons of strength, but also for reasons of weight, here aluminum or an aluminum alloy is used except for the hard metal sheets.

LIST OF REFERENCE NUMBERS

1

Linear guide system

2

basic profile

2a

first crossing area

2 B

second crossing area

3

metal sheet

3a

contact area

4

carriage

5

caster

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 4102147 [0004]

Claims (8)

Linear guide system ( 1 ), with a basic profile ( 2 ), which has several metal sheets ( 3 ) as raceways for a carriage ( 4 ), with rollers ( 5 ), characterized in that at least four metal sheets ( 3 ) in the basic profile ( 2 ) crossing planes are arranged such that in a first crossing area ( 2a ) the contact surfaces ( 3a ) for the rollers ( 5 ) are directed towards each other and that in a first crossing area ( 2a ) opposite second crossing area ( 2 B ) the contact surfaces ( 3a ) of the rollers arranged there ( 5 ) are also directed towards each other. Linear guide system ( 1 ) according to claim 1, characterized in that in the carriage ( 4 ) the respective rollers ( 5 ) are arranged so that in the first crossing area ( 2a ) and the second intersection ( 2 B ) existing rollers ( 5 ) successively alternately the contact surfaces ( 3a ) of the two arranged there as tracks serving metal sheets ( 3 ) alternately. Linear guide system ( 1 ) according to claim 1 or 2, characterized in that the basic profile ( 2 ) consists of an aluminum alloy or aluminum. Linear guide system ( 1 ) according to one of claims 1 to 3, characterized in that the metal sheets ( 3 ) consist of a hard metal alloy. Linear guide system ( 1 ) according to one of claims 1 to 4, characterized in that the rollers ( 5 ) are adjustable for optimal running. Linear guide system ( 1 ) according to one of claims 1 to 5, characterized in that the metal sheets ( 3 ) have a length> 6 m. Linear guide system ( 1 ) according to one of claims 1 to 6, characterized in that only the carriage ( 4 ) has a projecting over the basic profile profile cross-section contour. Linear guide system ( 1 ) according to one of claims 1, 2 and 4 to 7, characterized in that the basic profile ( 2 ) consists of metal, plastic, stone, wood or any combination thereof.

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