WO2017000943A1

WO2017000943A1 - Guide carriage and linear antifriction bearing

Info

Publication number: WO2017000943A1
Application number: PCT/DE2016/200298
Authority: WO
Inventors: Christian Vogelgesang; Patrick Daniel; Michael Heid
Original assignee: Schaeffler Technologies AG & Co. KG
Priority date: 2015-07-02
Filing date: 2016-06-29
Publication date: 2017-01-05
Also published as: DE102015212439B4; DE102015212439A1

Abstract

Guide carriage (1, 19) of a linear antifriction bearing, comprising head pieces (22) that are arranged on the end faces thereof, a support member (2, 20), and rolling elements (3) that are accommodated in such a way as to revolve in at least one raceway (4) of the guide carriage (1, 19); the raceway (4) has a loaded section (5) associated with the support member (2, 20), a return section (6) associated with the support member (2, 20), and two redirecting sections (7) which are associated with the head pieces (22) and which connect the loaded section (5) and the return section (6) at the ends thereof; the guide carriage (1, 19) is characterized in that the support member (2, 20) and/or at least one of the head pieces (22) has at least one breakthrough (10, 12) which opens the return section (6) and/or the redirecting section (7).

Description

F yourunpswaqeo and üneatwälzlager;

The invention relates to a guide carriage of a linear roller bearing with front cable ends arranged on it, comprising supporting bodies and rolling elements, which are received circumferentially in a roller body raceway of the guide carriage, wherein the rolling elements are connected to the supporting body assigned to the support body

has cut and the Ruckiaufabschnftt at their ends connecting the headers associated ümlenkäbschnitt.

From DE 44 13 373 A1 a guide carriage is known, which is movable on a guide rail of a Profiischienenführuhg angeord net. Each de Umlenkabschnttte there has an inner deflection provided with an inner deflection and a provided with an outer Umlenkbabo outer deflection,

Another carriage is known from DE 10 2ÖÖS 05S 194 Ä. In such known from the prior art carriage mostly high demands are placed on a sealing de Wälzkörperkanals This ensures that no foreign matter can penetrate into the Wälzkörperkanai of the supporting body of the linear bearing and a loss of lubricant; a friction-free movement of the rolling elements in the Waizkör rk ^

kan let us know

Gleichwöhl makes this seal: mostly not completely safe, that keek foreign bodies can get into the Wälzkörperkanai. With regard to the application areas on Ünean / välzlagern where high demands on hygiene di or the sterility of made it MUST THEREFORE possible that look microorganisms in de Wäizkörperkanäi form by entering foreign body ^'or fluid or accumulate pcler as Verunreinigüng ( can deposit The invention is therefore based on the object to provide a carriage, which can be cleaned einfac, To solve this problem is provided according to the invention in a carriage of the type mentioned that the Tragkorpex and / or ^ s most; de de head pieces has at least one DurGhbreebung that cut the return

The breakthrough provided by the invention for the support body and / or the head piece enables a fluid, in particular a liquid and / or a gas or pasty media, to surround the guide carriage and thus the support body, the interior of the rolling body passage can flow. By rounding in this case any opening of the Wälzkörperkanafs is understood, which is suitable de rewinding section and spring to open the deflection, the fluid used for cleaning the älzkörperkanal analogously again u ^ the at least one opening or through the already open loadabschniit leave. By flowing through the rolling body channel with a suitable fluid, the cleaning of the guide carriage, in particular of the rolling body cage and the rolling element chain circumscribing therein, can be carried out effectively. By flowing through the Wälzkörperkanais all Wälzkörperi particular balls that circulate in the Wälzkörperkanal, are flowed around. Thus, a cleaning or 'even a sterilization of the entire carriage inside, especially during operation, take place.

For this purpose, a plurality of apertures may preferably be provided on the carrier body, so that the fluid can flow through the roller body channel. Likewise, e is possible with a suitable fluid, cleaning, cooling and lubrication of the rolling elements

According to the invention, it is therefore proposed to allow the flow through the inside of the interior

To allow by open-designed Wälzkörperkanäle, thus bypassing the entire Wälzkörperkette, thus all in the Wälzk rperkanal recorded rolling elements to pass. The Ausvrahl the fluid or di composition thereof depends on the requirements to which the carriage or a Uneafwalzfager, which is associated with the carriage, must meet. So z. B to take care of appropriate Sehmiereigenschaft, Kühifähigkeit and cleaning effect of the fluid. Further, the materials of the components of the guide washer and / or the fluid should be selected such that there is a resistance of the materials used to the fluid flowing through. In particular, all parts of the guide carriage can be protected from corrosion by the corresponding corrosion coatings, use of a stainless steel and / or g-suitable plastics from the fluid. Of course, countless modifications are possible depending on the intended use of the materials used for de carriage and the fluid used. Particularly preferably, it may be provided in the guide carriage according to the invention, that the support body has on both sides each one: opening, which is arranged laterally on the support body. In each of the two limbs formed by the U-shaped guer cut, at least one rolling body channel is assigned to the support body in the rolling body endlessly circulating the support body of the hauling carriage has a substantially U-shaped cross section , Each of these Wälzkörperkanäle has a Lastabschniti, a return section and two each recorded in the headers, the L-branch section with the FiQckiauf section at the ends connecting deflection sections. In the load section, the rolling elements roll on running arches of the profiled section and in the interior of the rolling element channel. At the end of the load section or at both ends of the load section, a deflection section is arranged, which guides the rolling elements out of the load section into the return section and at the end of the return section i into the load section. The circulation of the rolling elements is dependent on the direction of movement of the guide rail on the profiled rail. According to an advantageous embodiment, each of the rolling element channels has a length of one of the legs of the supporting body

at least two perforations to the preferably on the R cklaufaibschriitt are geschördnet. Accordingly, a flow through the corresponding section can be assured.

A preferred Ä «guide carriage may consist in that the support body has at least one retaining web, which is arranged on the at least one perforated portion of the at least one Wälzkörperkanals un daz formed to keep the Wäizkörper in the Wälz örperkanal« Particularly preferred is the retaining web as Restqüersehnitt the Wälzkörperkanals formed in such a way that the rolling elements can not leave the Wälzkörpefkanal in the openwork part of the Wälzkörpefkanals, therefore a loss of rolling elements is therefore prevented, since they are held by the retaining web in the rolling element.

In addition to the ability to form the retaining web such that the Du rchbre- re-establishment of the support body only so far that, although a flow through a fluid through the Walzkörperkänäi is möglieh, but the rolling elements in the

näi can be provided, it can be seen to arrange a retaining web separately to the Wälzkorpe rkan l or, the body to bj Sden and d iesen d erart to the perforated portion of the at least one Wälzkörperkanals to order, so that this prevents loss of rolling elements from the Wälzkörperkanai ,

Particularly preferably, the carriage according to the invention four W lzkörper- kah! E, which are arranged in pairs one above the other on one leg of the support body, each pair has at least two breakneck- A derar- tiger guide carriage accordingly has on each leg of the support body two Wälzkörperkanäle on, in which wäkelnkörper circulate endlös. Each pair of superimposed Wälzkörperkanäle preferably has two openings. Particularly preferred is a large part j d ^ s ü ^

Broken through channel, so that a large part of Wälzkörpefkette könttnuierlich can be traversed by the fluid. According to this embodiment of the guide carriage according to the invention, each return section is thus broken open, so that a corresponding fluid can enter the rolling body passage from the outside and the rolling body chain can flow around it. The support body therefore has at least one through brechungfe ^ ^a: ng ^{^{'ecffdneteß:'} '^} i ^ ^ är erl ÖIE on.

Particularly preferred may be provided in the ^' embodiment with four Wälzkörperkahälen that the jamming web is formed integrally with drums separately from the headers and arranged or can be arranged thereon _* wherein the Rückhaitesteg is also formed, ie rolling elements of the Lastäbschnitte and / or the return sections between which the RückhaStesteg is arranged to hold in the Wälzkörperkanal.

Accordingly, it can be provided that the head pieces are designed to take up the backhaite web bzyv, that the retaining web between two Köpfstücken: can be arranged. By holding the Rückhaitestegs between the headers this is between the two RückSaufebschnitten or between see the two Lasiabschht the leg of the _* support body.

Of course, it is also possible, the restraining web as a residual cross-section of the Wilzkörperkanals aus¬ that thereby an opening which is smaller than the diameter of the rolling elements, formed w Sonach a loss of rolling elements by the Rückhaitesteg is prevented.

Particularly preferably, a head piece according to the invention has at least one extension, which is designed to häiten the vValzkörper in the Wäizkörperkanal. In other words, the opening of the head piece is designed in such a way that it also heals a loss of rolling elements.

In addition, the invention relates to a Linearwälziager with a carriage and forth guide rail _^ The guide carriage according to the invention can therefore be arranged longitudinally displaceable and roller bearings on a ehtspreGhenden Fuhruhgsschiehe. Of course, all described variants and Einzefhei- part, which have been described to the erfinduhgsgemäßen carriage, also on the Linearwäizl ager übe question. The invention will hereinafter anha me under Bezugnah- to the drawings drawings are schematic representations UOD zei ^{^} ^ _^

FIG. 1 shows an inventive embodiment of the invention in a perspective view;

FIG. 2 shows a carriage of the first type in FIG. 1 in a partly cut-away housing; FIG.

FIG. 3 shows a head of the carriage of FIG. 1;

Figure the head piece of Figure 3; and FIG. 5 shows a guide carriage according to the invention according to FIG

guide example in a partially cut representation,

Figure 1 shows a carriage 1, comprising a support body 2, two head pieces 22 and rolling elements 3, which in four Wälzkörperkanälen 4 of the guide carriage: 1 are endlessly aufjgenmoprnen. Each of the preform body channel 4 has a load section 5 associated with the support body 2 and a return section 6 associated with the support body and two end sections 5 connecting the load section 5 and the return section $ at their ends, which are inserted into the section 22. are taken. The load sections 5 are concealed in FIG. 1 and thus not shown, each shown in FIG. The head pieces 22 are fixed in this Äusführungsbeispiei by means of screws S to the support body 2. Of course, as a one-story connections between the headers 22 and the support body 2 are possible, it is clear that the support body 2 in the region of a side surface 9 is interrupted by two openings 0. By the Dürchbrechungeri 10 is a connection between the environment of the guide carriage 1 and the support body 2 and the Wälzkörperkanälen 4, in particular the Rücklaufabschhitte 6 of both Wälzkörperka- Of course, the support body 2 on the opposite S

10, which likewise establish a connection between the circumference of the supporting body 2 and the two roller body channels 4 arranged there, and thereby open the rolling body channels 4, in particular the return stroke center 6.

By the Dumhbrechüngen 10 tri the $ eitenfiä h 9 of the support body 2 remains according to this ÄUsführungsbeisplel a residual cross section of VVäizkörperkahäle 4. The thus formed iRückhaltstege 11 limit the openings 10 of the Wälzkörperkänäle 4, so d ass the rolling elements 3 through the retaining webs 11 in the Wälzkörperkanälen 4 are held. De diameter of the rolling elements 3 sonaqh is greater than the corresponding opening of the Wälz örperkanals. 4

It is therefore possible any fluid, such as a gaseous

ges öder pasty detergent through the Durehbrechungeh 1 in the Wälzkörperkanäle 4 introduce so that the circulating there Wäizkörper 3 lubricated or can be cooled or cleaned or sterilized.

FIG. 1 also shows that the head pieces 22 also have apertures 12, which also allow inflow of a suitable fluid to the head piece 22 and thus into the end piece portions 7. The heads i -: - 22 also have extensions 13, which are designed in such a way that the rollers 3 can not leave the wate body channels 4 in the region of the deflection sections 7. Figure 2: shows that through the openings 14 of the support body 2, the environment of the support body 2! Connect with the i-stäbschnitten 5, a suitable fluid then into the Lastabsc nitte 5 of the Wälzkörperkanäle 4 and can flow through them through the Durcbbrechuhgen: 10, 12 and the openings 14 is a complete flow around the entire Wälzkörperketteni that of the total number the Wäizkörper 3 is formed, in springs dr W I Izkörperkanäle 4 provides hr wä körkkörper 4 of the FüHrun swägens

be cooled, lubricated and sterilized. Figures 3 and 4 each show a perspective view of a head piece 22 from different n Perspectives. As can be seen, the headpiece 2 has fastening means 15, through which the screws 8 can be inserted in order to attach the head piece 22 to the support body 2. Each of the head piece 22 associated Ünilenk- sections 7 each have a turnaround 16 which connects one end of the load section 5 with one end of the respective return section 6. For this purpose, the individual deflections 16 have an outer deflection 17 and an inner deflection 18, on which the Vvaizkörper 3 circulate in the Umienkuhgert 16 and thus guided by the load section 5 in the Rückiaufabschnitt 6 and vice versa.

Figure 5 shows a carriage 19 with a support body 20, which also four Wäizkörperkanä e 4 with it _. .endlos circulating VVälzkörp rn 3 has. The basic structure of the Führüngwagen 19 corresponds to that of the previously described carriage 1, in contrast to the carriage 1 is the support body 20 of the carriage 19 on the side surfaces 9 over the entire range of Rücklaufa sections 6 of Wälzkörperkänäie in the supporting body 20 durc skate ;. Between the headers 22 is a back-restraint 21 a omm @ n, which holds the rolling elements 3 in the return sections 6. The head piece '..2.2 have corresponding brackets. In which the retaining web 21 is added.

The load sections 5 which run on the inside of the legs of the support body 20 are also open along their entire length between the deflection sections 7. There is also arranged eih Rückhaitesteg 21 between the headers 22, which holds the rolling elements 3 i the load sections 5 of the Wäizkörperkanäle 4 of the support body 20. The endless circulation d Wälzkörpef 3 in the Wälzkörperkanäleh 4 is thus gewä guaranteed.

Furthermore, it can be seen from FIG. 4 that the head pieces 22 likewise have apertures 12 which make possible a further improvement with regard to the flowability of the heat transfer means 4 of the carrying body 20: Reference sign guide carriage

supporting body

VVäfekörper

Wäizkörperkanal

Last section

Return section

deflecting

screw

side surface

perforation

Retaining web

perforation

extension

opening

fastening opening

Umienkun

Äum redirection

inner deflection

carriages

supporting body

Retaining web

Head piece

Claims

claims

Guide carriage (1, 19) of a linear roller bearing with end pieces arranged thereon on the head pieces (22), comprising a support body (2, 20) and rolling elements (3) which are received circumferentially in at least one rolling element channel (4) of the guide carriage (1, 19), wherein the rolling element channel (4) has a load section (5) associated with the support body (2, 20) and a return section (6) associated with the support body (2, 20) and two connecting the load section (5) and the return section (6) at their ends , the deflecting sections (7) assigned to the head pieces (22), characterized in that the supporting body (2, 20) and / or at least one of the head pieces (22) has at least one opening (10, 12) which forms the return section (6). and / or the deflection section (7) opens.

Guide carriage according to claim 1, characterized in that the support body (2, 20) on both sides each have an opening (10, 12) which are arranged laterally on the support body (2, 20).

Guide carriage according to claim 1 or 2, characterized in that the supporting body (2, 20) at least one retaining web (1 1, 21) which is arranged on the at least one perforated part of the at least one Wälzkörperkanals (4) and adapted to To keep rolling elements (3) in the rolling element channel (4).

Carriage according to one of the preceding claims, characterized in that it comprises four Wälzkörperkanäle (4) which are arranged in pairs one above the other on one leg of the support body (2, 20) and that each pair has at least two openings (10, 12).

Guide carriage according to claim 4, characterized in that the support body (2, 20) in each case at least one opening (10, 12) for the return sections (6) of the paired Wälzkörperkanäle (4).

6. carriage according to claim 4 or 5, characterized in that the retaining web (1 1, 21) integrally formed with or separately from the head pieces (22) and arranged thereon or can be arranged, wherein the retaining web (11, 21) further formed thereto is, the rolling elements (3) of the return sections (6) between which the retaining web (11, 21) is arranged to hold in the rolling body channel (4).

7. carriage according to one of the preceding claims, characterized in that at least one deflection section (7) of the head pieces (22) has an extension (13) which is adapted to hold the rolling elements (3) in the rolling body channel (4) ,

8. carriage according to claim 7, characterized in that the extension (13) is formed integrally with the head piece (22).

9. linear roller bearing with a guide carriage (1, 19) according to one of the preceding claims and a guide rail on which the carriage (1, 19) is roller-mounted and arranged linearly displaceable.