DE102004050818B4 - Linear guide with a cylindrical roller module - Google Patents

Abstract

Linear guide with a cylindrical roller module, which has at least:
a slide rail (10) formed as an elongate member with four rolling surfaces (11, 12);
a sliding carriage (20) having four return paths (21, 22) and four rolling surfaces (23, 24) and is movably mounted on the slide rail (10);
a cylindrical roller module (50) consisting of a plurality of cylindrical rollers;
a circulation module composed of U-shaped half-circulation sections (30a, 30b), each of which has a diverter (33a and 33b), a support rod (31a and 31b) and a return half-pipe (32a and 32b) integrally and wherein the half circulation module (30) comprises a deflection section (33), a support section (31) and a return section (32), and wherein the support section (31) and the return section (32) via the deflection section (33) with each other wherein the deflection section (33) has an inner deflection path and an outer deflection path (332), and wherein the two half-circulation modules (30) at a certain angle through the two ...

Description

The Invention relates to a linear guide, the for precise Control ensures and mechanical arms, industrial mechanics, automation equipment, measuring equipment, electronic Plants, etc. is used. In particular, the linear guide according to the invention relates to a design with a cylindrical roller module, with the mechanical strength and accuracy can be increased are and are therefore at large Machines and used where a big burden is available.

conventional linear guides include one as a rolling surface for rolling body serving Slide rail, a sliding carriage movably mounted on the slide rail and a plurality of rolling bodies, the movably mounted between the slide rail and the sliding carriage are.

The Circulating system for roll body the provided with a cylindrical roller module linear guide comprises a rolling body holding device, a return path and a return diverter. Furthermore This circulating system can be composed of parts or parts Injection molding from one piece be made.

Out JP 2002-54633 discloses a circulating system for linear guides, which consists of individual parts is composed. This means, that the rolling body holding device, Return path and return diverter all executed as a single part and not in one piece connected to the sliding carriage but with the sliding carriage to a movable assembly are joined together. The disadvantage is that too many components are present, whereby the assembly only with great Time and effort possible is.

Out JP 7-317762 discloses a circulation system which is injection molded is integrally formed. The slider car is part of it the injection mold, whereupon the rolling body supporting device, return path and return diverter are made in one piece by injection molding. At this Design becomes a big one Mold needed, if the slider is big Dimensions. Furthermore this places high demands on the accuracy of the injection molding process, what the making of the big Sliding trailer difficult. Furthermore is the rolling body support device formed narrow, which makes their formation considerably difficult.

The US 6 132 093 A discloses a linear guide with a slide rail and a slide carriage having four return tracks and four rolling surfaces and is movably mounted on the slide rail. The sliding carriage consists of a block-shaped body, ball-receiving counter-grooves, a resin body with recirculating ball channels, which is insertable into the block-shaped body, and two side plates, which are fixed to the two end faces of the block-shaped body, in which the synthetic resin body can be inserted. The sliding carriage is therefore composed of several individual parts whose assembly requires a corresponding assembly time. Further, when the slider is large, the resin body is also large; this requires a large mold for producing the resin body. The injection molding process for producing the resin body must be performed with high accuracy; otherwise, the synthetic resin body does not fit properly into the block-shaped body of the sliding carriage. The required manufacturing accuracy is also reflected in high production costs.

The DE 694 10 397 T2 discloses a linear guide with a slide rail and a slide carriage having four return tracks and four rolling surfaces and is movably mounted on the slide rail. The slider comprises a slide table C-shaped cross-section and four linear guide mechanisms 100 of identical shape, two on each side of the guide rail, which are mounted in the slide table via bolts. The structure of this linear guide is relatively complicated, since each of the guide mechanisms represents an independent circulation system consisting of a guide block, a plurality of balls, two cover members, two scrapers and two bolts. Each cover element comprises a rectangular body, a cover of L-shaped cross section and a retainer. This linear guide is therefore relatively expensive both in terms of their production and installation.

Of the present invention is the object of a linear guide with a cylindrical roller module of the specified type so on, that their manufacture and assembly are simplified.

The Invention has the features specified in claim 1. In the dependent claims embodiments of the invention are given.

It is possible that the circulation module according to the invention in the construction of cylindrical rollers can replace that in the construction of rolling balls of the conventional linear guide. The cylindrical rollers have a flat contact surface with the sliding carriage and thus has a larger contact surface than the rolling balls, which leads to an increase in the load capacity. Therefore, he can inventive linear guide with a cylindrical roller module in large machines and are used where a large load is present.

Of Furthermore, the linear guide according to the invention comprises a cylindrical roller module a slide rail, as an elongated Element with four rolling surfaces is formed, a sliding carriage, which is movably mounted on the slide rail is and four custom roll surfaces and four return paths having. The two half-round modules are at a certain angle through the opposite end surfaces the sliding carriage plugged and assembled into a complete circulation module. Besides that is the cylindrical roller module composed of a plurality of cylindrical rollers and movably mounted in the circulation module. After that, the end sections on both end surfaces attached to the sliding carriage and used in adaptation to the circulation module.

Further is the circulation module of substantially U-shaped half-round sections each composed of a diverter, a support rod and a return half pipe has, the three in one piece connected to each other. The half circulation module comprises a deflection section, a support section and a return section, the support section and the return section over the Deflection section are interconnected. In addition, the deflection section an inner deflecting path and an outer deflecting path to get an X-shaped one crossing, deflecting rolling motion of the two cylindrical roller modules make in the deflection. Therefore, a complete orbit is created in the way that the inner deflection path of the deflection of a Semi-rotary module the support section and the return section connects and then to the outer deflection track the deflection of the other circulating module is connected.

Farther is the cylindrical roller module according to the invention composed of several cylindrical rollers. Alternatively, it may look like a plurality of cylindrical rollers and a spacer are assembled, wherein the spacer is a chain-like configuration or a Has single-part structure and serves to the cylindrical rollers from each other separate.

Summarized the present invention is characterized by a circulation module, in which several half circulation sections are integrated, without several To need components whereby the assembly with less time is possible. Furthermore the maintenance is facilitated due to the smaller number of components. About that In addition, the present invention provides a lower requirement Injection molding, so that the required production forms cheaper are.

in the Following are objects, features and operation of the invention based on the preferred embodiments and the accompanying drawings be explained in more detail. Show it:

1 an exploded perspective view of a linear guide according to the invention;

2 a schematic representation of the end face of the linear guide according to the invention without the end portion;

3 a perspective drawing of a half-round module according to the invention in a disassembled design;

4 a procedure for assembling two inventive half-round modules;

5 an enlarged section 4 ;

6 a perspective drawing of a complete circulation module according to the invention according to 4 ;

7 a cross section along the line AA 6 ;

8th a cross section along the line BB 6 ;

9 a cross section along the line CC 6 ;

10 an end view of the inside of the end portion of the invention according to 1 ;

11 in a schematic perspective view of another embodiment of the cylindrical roller module according to the invention; and

12 in a schematic perspective view of another embodiment of the cylindrical roller module according to the invention.

How out 1 and 2 it can be seen, a linear guide according to the invention has a slide rail 10 as an elongated element with four rolling surfaces 11 . 12 is formed, a sliding carriage 20 with four return paths 21 . 22 and four rolling surfaces 23 . 24 , four half-round modules 30 , two end sections 40 , a cylindrical roller module consisting of cylindrical rollers 50 , two dust-proof rods 60 and two oil scraper 70 on. The sliding car 20 is on the slide rail 10 movably mounted, with the rolling surfaces 11 . 12 the slide rail 10 to the rolling surfaces 24 . 23 of the slide car 20 are adapted to the cylindrical roller module 50 to move in between. The half-round modules 30 be from the end faces of the slide car 20 in the respective associated return paths 21 . 22 introduced. The two end sections 40 are on the end surfaces of the sliding carriage 20 appropriate. The dust-proof rods 60 are in the columns below the slide car 20 mounted to prevent entry of contaminants. The oil scrapers 70 are outside at the end sections 40 attached to foreign matter from the slide rail 10 to remove and their entry into the sliding carriage 20 to prevent.

The following will be referred to 3 to 5 taken. The half-round module 30 is made of two substantially U-shaped half-round sections 30a . 30b constructed, with the half-round sections 30a . 30b one deflector each 33a respectively. 33b , a support rod 31a respectively. 31b and a return half pipe 32a respectively. 32b have, which are integrally connected to each other. The smaller support bar 31a and the return half pipe 32a are over the deflector 33a connected while the larger support rod 31b and the return half pipe 32b over the deflector 33b are connected. The deflectors 33a . 33b Both have an outer deflection surface 332a and an inner deflection surface 333b , Along the orbit is a guide groove 322 provided to the cylindrical roller module 50 respectively. The width of the guide groove 322 is over one third of the diameter of the cylindrical rollers. There are also oil inlet and oil outlet grooves 34b . 341b . 342b in the deflectors 33a . 33b available. The free end of the support bar 31a . 31b is with a fixing pin 311 . 311b Mistake. Will the two half circulation sections 30a . 30b using the connector between positioning pins 321b . 331b and holes are joined together, the support rods 31a . 31b to a support section 31 , the return half pipes 32a . 32b to a return section 32 and the deflectors 33a . 33b to a deflection section 33 together. In addition, the return section 32 of the half circulation module 30 on its outer surface with a plurality of fastening nubs 35a provided with which the half-round module 30 in the return path 21 . 22 of the slide car 20 is attached. A return path is inside the return section 32 trained and serves to allow a smooth return of the cylindrical roller module. The deflection section 33 has one of the inner deflection surfaces 333b existing, inner deflection path and one of the outer deflection surfaces 332a existing outer deflection track 332 on. In addition, one of the oil inlet grooves 34b existing oil inlet opening 34 , one from the Ölauslassnuten 341b existing, outer oil outlet 341 and one of the oil outlet grooves 342b existing, provided internal oil outlet. Occurs the lubricating oil from the oil inlet 34 On, it passes through the outer Ölauslassöffnung to the deflection path to lubricate the cylindrical roller module. The two half circulation modules 30 be at right angles through the two opposite end faces of the in 1 shown sliding carriage 20 plugged to form a complete circulation module.

Furthermore, reference is made to 6 to 9 taken. Out 8th it can be seen that the cylindrical roller module 50 is constructed of a plurality of cylindrical rollers and a spacer, wherein the circulation module has two orbits, in which the cylindrical roller module 50 is movably mounted. One of the orbits contains the cylindrical roller module 50 while the other no cylindrical roller module 50 contains. The return channel 323 is from the return half pipes 32a . 32b built during the rolling channel 312 out of support rods 31a . 31b consists. The guide groove 322 serves to guide the spacer of the cylindrical roller module 50 , Out 7 it can be seen that the cylindrical roller module 50 containing orbit is transferred via the located on the right side of the circulation module, inner deflection path of load and return state in return or load condition. On the other hand, the no cylindrical roller module is used 50 containing orbit that the other half circulation module 30 through the on the right side of the cylindrical roller module 50 located, outer deflection track 332 is diverted. In this way, the two orbits in the deflection 33 Crossed X-shaped. This results in an X-shaped crossing, deflecting rolling motion of the cylindrical roller module 50 in the deflection section 33 the orbit. In 9 is shown that the no cylindrical roller module 50 containing orbit is transferred via the located on the left side of the circulation module, inner deflection path of load and return state in return or load condition. On the other hand, the cylindrical roller module serves 50 containing orbit that the other half circulation module 30 through the on the left side of the cylindrical roller module 50 located, outer deflection track 332 is diverted. In this way, the two orbits in the deflection 33 Crossed X-shaped. This results in an X-shaped crossing, deflecting rolling motion of the cylindrical roller module 50 in the deflection section 33 the orbit.

The end sections 40 are on both end surfaces of the sliding carriage 20 appropriate. How out 10 can be seen, the end portion 40 one to the outer deflection track 332 of in 5 shown half circulation module 30 adapted deflection curve 47 on, which avoids that the cylindrical roller module 50 when passing the outer deflection track 332 falls downwards. In the end section 40 are mounting holes 43 . 44 provided to the fixing pins 311 respectively. 311b are adapted to secure fixation of the support rod 31a respectively. 31b to effect. There are also recesses 46 present to the return section 32 of the half circulation module 30 are adjusted. To achieve the lubricating effect is the end portion 40 with an oil filler opening 41 and two laterally downwardly extending oil supply paths 42 provided, wherein at the rear end of the oil supply paths 42 one to the oil inlet 34 of the deflection section 33 of the half circulation module 30 adapted oil chamber 45 is formed, which is a guide of the oil filler opening 41 filled lubricating oil through the oil supply paths 42 to two-sided oil chambers 45 causes. In this way, the lubricating oil can then to the oil inlet 34 of the half circulation module 30 get to the cylindrical roller module 50 to lubricate.

How out 11 can be seen, includes the cylindrical roller module 50 several cylindrical rollers 51 and a spacer 52 , where the cylindrical rollers 51 with the spacer 52 be separated from each other. The spacer 52 is made of spacers 521 and a leadership chain 522 built like a chain. With the respective spacers 521 can the cylindrical rollers 51 separated, the spacers 521 with the leadership chain 522 be assembled into a chain-like configuration. The spacer 52 is with grooves 523 provided, with which a smooth diversion is possible. The spacer 53 according to 12 is designed as a single piece and a spacer 531 and a guide pin 532 composed. With the spacer 53 can the cylindrical rollers 51 also be separated from each other.

Claims (9)

Linear guide with a cylindrical roller module, comprising at least: a slide rail ( 10 ), which is an elongated element with four rolling surfaces ( 11 . 12 ) is trained; a sliding carriage ( 20 ), the four return tracks ( 21 . 22 ) and four rolling surfaces ( 23 . 24 ) and on the slide rail ( 10 ) is movably mounted; a cylindrical roller module ( 50 ) consisting of a plurality of cylindrical rollers; a circulation module consisting of U-shaped half circulation sections ( 30a . 30b ), each of which is a deflector ( 33a respectively. 33b ), a support rod ( 31a respectively. 31b ) and a return pipe ( 32a respectively. 32b ), which are integrally connected to each other, and wherein the half-round module ( 30 ) a deflection section ( 33 ), a support section ( 31 ) and a return section ( 32 ), and wherein the support section ( 31 ) and the return section ( 32 ) over the deflection section ( 33 ), wherein the deflecting section ( 33 ) an inner deflecting path and an outer deflecting path ( 332 ), and wherein the two half circulation modules ( 30 ) at a certain angle through the two opposite end surfaces of the slide carriage ( 20 ) are pluggable to form a complete circulation module, and wherein the circulation module via two cylindrical roller modules ( 50 ), which are movably mounted in the orbit, wherein an X-shaped crossing, deflecting rolling movement of the two cylindrical roller modules ( 50 ) in the deflection section ( 33 ) takes place; and two end sections ( 40 ), which on both end surfaces of the sliding carriage ( 20 ), each of the end sections ( 40 ) one to the outer deflection path ( 332 ) of the half circulation module ( 30 ) adapted deflection curve ( 47 ), with which it is avoided that the cylindrical roller module ( 50 ) when passing the outer deflection path ( 332 ) falls downwards. Linear guide according to claim 1, characterized in that the inner deflection path of the deflection ( 33 ) of a half circulation module ( 30 ) of the circulation module the support section ( 31 ) and the return section ( 32 ) and then with the outer deflection path ( 332 ) of the deflection section ( 33 ) of the other circulation module is connected to form a complete orbit. Linear guide according to claim 1, characterized in that the two half circulation modules ( 30 ) of the circulation module are at right angles. Linear guide according to claim 1, characterized in that the deflection section ( 33 ) of the half circulation module ( 30 ) with an oil inlet opening ( 34 ) and oil outlet openings ( 341 ) is provided, through which the lubricating oil enter the circulation module and to the inner deflection path and the outer deflection path ( 332 ) can be guided to the cylindrical roller module ( 50 ) to lubricate. Linear guide according to claim 1, characterized in that the cylindrical roller module ( 50 ) several cylindrical rollers ( 51 ) and a spacer ( 52 ), wherein the cylindrical rollers ( 51 ) with the spacer ( 52 ) are separable from each other. Linear guide according to claim 5, characterized in that the spacer ( 52 ) of the cylindrical roller module ( 50 ) of spacers ( 521 ) and a leadership chain ( 522 ) is constructed chain-like, with the respective spacers ( 521 ) the cylindrical rollers ( 51 ) are separable from each other, and wherein the spacers ( 521 ) with the leadership chain ( 522 ) are joinable into a chain-like configuration, and wherein the spacer ter ( 52 ) with grooves ( 523 ), with which a smooth diversion is possible. Linear guide according to claim 5, characterized in that the spacer ( 53 ) formed as a single piece and from a spacer ( 531 ) and a guide pin ( 532 ), wherein with the spacer ( 53 ) the cylindrical rollers ( 51 ) are separable from each other. Linear guide according to one of claims 5 to 7, characterized in that the deflection section ( 33 ), Supporting section ( 31 ) and return section ( 32 ) of the half circulation module ( 30 ) with a guide groove ( 322 ), which has the task of the spacer ( 52 ) of the cylindrical roller module ( 50 ) respectively. Linear guide according to claim 1, characterized in that the return section ( 32 ) of the half circulation module ( 30 ) on its outer surface with a plurality of fastening knobs ( 35a ), with which the half circulation module ( 30 ) in the return path ( 21 . 22 ) of the sliding carriage ( 20 ) is attached.