JP2021032408A - Guide carriage for linear guide - Google Patents

Abstract

To provide a guide carriage improved for a linear guide, capable of securing the coating of a lubricant over the whole length of the guide carriage.SOLUTION: A guide carriage for a linear guide is provided with a lubricant supply element (6) between a first part guide carriage (2) and a second part guide carriage (4). The lubricant supply element has first and second traveling grooves (8a, 10a, 12a, 14a; 8b, 10b,12b, 14b) of the first part guide carriage at a first axial side, and first connection traveling grooves (18a, 20a, 22a, 24a) extended in an axial direction and second connection traveling grooves (18b, 20b, 22b, 24b) extended in the axial direction, connected to the first and second traveling grooves of the second part guide carriage at a second axial side, and the lubricant supply element includes at least one lubricant supply passage (16) fluidically connected to at least one connection traveling groove.SELECTED DRAWING: Figure 1

Description

The present invention relates to a guide carriage for a linear guide as described in claim 1.

Linear guides or linear rolling bearings are used in a wide variety of applications and are regularly used for linear guides of moving members such as machine tool parts. Such a linear guide usually consists of a guide rail and a carriage that rolls on the guide rail and runs on a bearing. The carriage side is provided with at least two endless rolling element grooves, in which a rolling element such as a ball or a roller orbits, and each rolling element groove receives a rolling element running on a rail. It is provided with a groove portion (also called forward) on which a load is applied, and a portion (also called retrograde) on which the rolling element is returned along the groove and no load is applied. The rolling elements can make a suitable U-turn at the axial end of the carriage, resulting in an endless groove. For this purpose, the ends of the carriage are provided with two headpieces or end caps, each with a U-turn piece.

Since the lubricant can be applied to keep the frictional resistance as small as possible, a lubricating film is formed on both the running surface of the rail and the rolling element. Lubricant is typically applied to the area of the U-turn piece of each end cap.

However, it may not seem possible to guarantee sufficient lubrication over the entire length of the guide carriage. This is the case, for example, if the guide carriage is long, that is, if the lubricant has already peeled off inside the guide carriage, and / or if the guide carriage transition path is short, that is, where the supplied lubricant is loaded on the guide carriage. It can happen when there is a danger of not being carried to the carriage.

Therefore, an object of the present invention is to provide an improved guide carriage for a linear guide, particularly an improved lubricant supply element, which can guarantee lubrication over the entire length of the guide carriage.

This problem is solved by the guide carriage for the linear guide according to claim 1.

In the following, it has at least one first partial guide carriage having at least one first and second running grooves extending axially and at least one first and second running grooves extending axially. A guide carriage for a linear guide having at least one second partial guide carriage is proposed. It has been proposed to provide a lubricant supply element between the first partial guide carriage and the second partial guide carriage to ensure lubrication over the entire length of the guide carriage. , The first and second travel grooves of the first partial guide carriage on the first axial side, and the first and second travel grooves of the second partial guide carriage on the second axial side. And having a first connecting carriage extending axially and a second connecting carriage extending axially, the lubricant supply element fluidly with at least one connecting carriage. It comprises at least one connected lubricant supply path. Preferably, the traveling groove and the connecting traveling groove of the respective partial guide carriages are connected to each other in a straight line. At that time, the partial guide carriage can be understood as a part or a part of the guide carriage, or a joint of a plurality of partial guide carriages.

Providing a lubricant supply element between the first partial guide carriage and the second partial guide carriage has the additional advantage that the rolling elements pass linearly through the lubricant supply element. That is, the lubricant supply is not performed at the end of the guide carriage, but rather within the guide carriage itself. This, on the one hand, provides greater flexibility with respect to the placement of the lubricant supply, and on the other hand, lubrication inside the long guide carriage, as the lubricant supply can be improved even when the guide carriage is long. The possibility of the film peeling can be reduced. This is because the long guide carriage may be split and a lubricant supply element may be provided between the two partial guide carriages. Even if the transition path of the guide carriage is short, that is, there is a risk that the supplied lubricant will not be delivered to the loaded part of the guide carriage, the proposed guide carriage is higher in terms of lubrication supply placement. Flexibility allows the lubricant to be delivered immediately before and / or immediately after the loaded portion of the guide carriage. In other words, the lubricant can be supplied closer to the loaded portion of the guide carriage. Further, the application of the lubricant on the straight portion makes it possible to better distribute the lubricant to the rolling elements.

The supply of lubricant to the lubricant supply element itself may be possible, for example, through a lubricant tank provided within the lubricant supply element. Alternatively or additionally, the lubricant supply element may include a lubricant main conduit that is connected to the tank if necessary or permanently. In that case, the tank may be provided at a remote location.

According to a preferred embodiment, the first and second partial guide carriages are formed with a plurality of first and second travel grooves, and the lubricant supply element is provided with first and second portions. A plurality of first and second connecting running grooves are formed to connect the first and second running grooves of the guide carriage, respectively. Thereby, the load is distributed to the plurality of traveling grooves, so that the guide of the guide carriage on the rail can be improved.

According to a preferred further embodiment, the lubricant supply path is fluidly connected to the plurality of first and / or plurality of second connecting runways.

This has the advantage that the lubricant passage can easily supply the lubricant to the plurality of connecting run grooves. In particular, the number of first and / or second connecting run grooves that are fluidly connected to the lubricant supply path may depend on the lubricant requirement.

Alternatively, a plurality of lubricant supply paths may be provided in one connecting traveling groove, of course. Thereby, the lubricant can be supplied over the entire length of the lubricant supply element, and the lubrication application is improved as a whole. In addition, a circumferential supply position may be mounted specifically around the connecting run groove for the lubricant.

According to a preferred further embodiment, each of the first and / or second connecting runways is connected to one or more separate lubricant supply paths, respectively.

Thus, advantageously, each connecting runway can be supplied with lubricant via one or more of its own lubricant supply paths. In particular, it is possible to meet the individual lubricant requirements of each connecting runway.

According to a further preferred embodiment, the first run groove and the first connecting run groove are formed as an antegrade groove for at least one rolling element, the rolling element having a guide carriage along it. It is designed to contact the movable rail and movably bearing the guide carriage with respect to the rail. Further, the second traveling groove and the second connecting traveling groove are formed as a retrograde groove in which at least one rolling element is guided without contacting the rail. Preferably, one or more rolling elements are provided, and the rolling elements may exist, for example, in the form of a chain of rolling elements. The rolling element may be, for example, a ball, a roller, a needle or other rolling element.

Preferably the lubricant may be deliberately supplied to the forward and / or retrograde grooves. The supply to the forward groove has the advantage that the lubricant can be put directly into the contact area between the element and the rail, thus easily preventing a lubricant shortage condition. .. On the other hand, the supply of the lubricant to the retrograde groove has the advantage that the loss of the lubricant can be minimized because the contact of the retrograde groove with respect to the rail is not loaded.

Of particular advantage is that at least one lubricant supply path is fluidly connected to at least one retrograde groove and / or each lubricant supply path is connected to one retrograde groove. That is.

According to a preferred further embodiment, the lubricant supply element further comprises at least one receptor to distribute the prescribed amount of lubricant into and / or in contact with the receptor. A designed lubricant distribution element and / or a sensor designed to monitor the lubricant supply can be installed.

Thereby, in particular, a defined amount of lubricant may be supplied to one or more travel grooves via one or more lubricant supply paths. Moreover, the lubricant supply can be monitored directly at the lubricant supply element.

Further, the lubricant supply element may include a sensor signal conductor and / or a receiver for the sensor signal evaluation electronic device. Alternatively, the sensor signal may be transmitted wirelessly.

According to a preferred further embodiment, the lubricant distribution element is a metering piston or metering insert that distributes the lubricant at the specified piston stroke of the distribution piston.

According to a preferred further embodiment, each lubricant supply path is provided with one lubricant distribution element.

This has the advantage that each lubricant supply path can be supplied with an individually adjustable amount of lubricant. Therefore, in particular, the amount of lubricant supplied to each traveling groove can be individually specified.

In particular, all lubricant distribution elements may be connected to the lubricant main conduit and / or tank.

According to a preferred further embodiment, each lubricant supply path is provided with one sensor, and / or each lubricant distribution element is provided with one sensor.

The presence of a unique arrangement of the sensor and the lubricant supply path and / or the sensor and the lubricant distribution element advantageously provides a individually configurable lubricant supply status for the corresponding connecting run groove. Can be monitored.

According to a preferred further embodiment, each lubricant distribution element and / or each sensor is received by a separate receiver, preferably the receiver is formed as a cavity within the lubricant supply element. As such, the lubricant distribution element and / or sensor can be incorporated into the lubricant supply element.

Thereby, advantageously, the lubricant supply element can be shaped more compactly. For example, the cavity may be drilled and / or cut into the lubricant supply element. Alternatively or additionally, the lubricant feed element may be manufactured using additional manufacturing methods, including its cavities or receptors and / or passages.

According to a preferred further embodiment, the second partial guide carriage is formed as an end cap of the guide carriage, and the first and second travel grooves of the end cap are connected via a U-turn lane. Has been done.

Further advantages and advantageous embodiments are presented in the description, figures and claims. In particular, the combination of features presented in the description and the figure is purely exemplary, so the features may exist individually or in different combinations.

Hereinafter, the present invention will be described in more detail based on the examples illustrated in the figure. At that time, the examples and the combinations shown in the examples are purely exemplary and do not determine the scope of protection of the present invention. This scope of protection is defined only by the dependent claims. The figure shows the following.

FIG. 6 is a schematic perspective view of a guide carriage for a linear guide according to an embodiment. It is a side view of the lubricant supply element of the guide carriage for the linear guide shown in FIG. It is sectional drawing which follows the line AA of FIG. It is sectional drawing which follows the line BB of FIG.

In the following, elements that have the same or functionally the same action are designated by the same reference numerals.

FIG. 1 shows a schematic perspective view of a guide carriage 1 for a linear guide according to an embodiment. The guide carriage 1 for the linear guide has one first traveling groove 8a, 10a, 12a, 14a, and a second traveling groove 8b, 10b, 12b, 14b, respectively, and extends in the axial direction 4 Includes a first partial guide carriage 2 having two run groove pairs 8, 10, 12, 14.

The guide carriage 1 is equipped so as to be guided by a rail (not shown), and the first traveling grooves 8a, 10a, 12a, 14a of the traveling groove pairs 8, 10, 12, and 14, respectively, are forward. It is formed as a groove, and a plurality of rolling elements (not shown) are guided in the forward groove, the rolling elements are in contact with the rail, and the guide carriage 1 is designed to be bearing on the rail. Therefore, the guide carriage 1 can move along the rail. The second traveling grooves 8b, 10b, 12b, and 14b of the traveling groove pairs 8, 10, 12, and 14 are formed as retrograde grooves, and a plurality of rolling elements are guided in the retrograde grooves without contacting the rail. Will be done.

Further, the guide carriage 1 includes a second partial guide carriage 4 which may be formed as an end cap as shown, with the respective forward grooves 8a, 10a, 12a, 14a corresponding retrograde grooves 8b, 10b, It is equipped with U-turn lanes (not shown) that connect to 12b and 14b. Alternatively, the second partial guide carriage 4 may undertake a load-bearing function, like the first partial guide carriage 2.

A lubricant supply element 6 shown in a side view in FIG. 2 is provided between the first partial guide carriage 2 and the second partial guide carriage 4.

Similarly, the lubricant supply element 6 has a plurality of pairs of connecting carriages 18a, 18b, 20a, 20b, 22a, 22b, 24a, 24b extending in the axial direction, and the connecting carriages are the first. The forward grooves 8a, 10a, 12a, 14a and the retrograde grooves 8b, 10b, 12b, 14b of the partial guide carriage 2 are connected to the forward groove and the retrograde groove of the second partial guide carriage.

The connecting traveling grooves 18a, 20a, 22a, and 24a of the lubricant supply element 6 are provided so that the rolling elements guided in the traveling grooves come into contact with the rails, such as the forward grooves 8a, 10a, 12a, and 14a. On the other hand, the connecting traveling grooves 18b, 20b, 22b and 24 guide the rolling elements without contacting the rails like the retrograde grooves 8b, 10b, 12b and 14b. Preferably, the traveling grooves pairs 8, 10, 12, 14 of the first partial guide carriage 2 and the connecting traveling grooves 18a, 18b, 20a, 20b, 22a, 22b, 24a, 24b of the lubricant supply element 6 are in a straight line with each other. Is formed in. Further, the connecting traveling grooves 18a, 18b, 20a, 20b, 22a, 22b, 24a, 24b and the traveling groove pair of the second partial guide carriage 4 are formed in a straight line with each other.

The lubricant supply element 6 further has at least one lubricant supply path 16 (FIGS. 3 and 4), and in the embodiments shown, the four connecting run groove pairs 18a, 18b, 20a, 20b, 22a. , 22b, 24a, 24b are each connected to one lubricant supply path. Only one lubricant supply path 16 is shown in FIGS. 3 and 4 so that the overall view is well understood.

At that time, each of the lubricant supply paths 16 is fluidly connected to the related connecting traveling grooves 18a, 18b, 20a, 20b, 22a, 22b, 24a, 24b. Preferably, the lubricant supply path 16 is fluidly connected to the connecting traveling grooves 18b, 20b, 22b, 24b arranged in the retrograde grooves 8b, 10b, 12b, 14b. Additional or alternative, the lubricant supply path may also be fluidly connected to the connecting run grooves 18a, 20a, 22a, 24a disposed in the forward grooves 8a, 10a, 12a, 14a.

Preferably, since the respective lubricant supply paths 16 are provided separately from each other, between the lubricant supply paths 16 and the accompanying connecting traveling grooves 18a, 20a, 22a, 24a, 18b, 20b, 22b, 24b. , There is a unique arrangement. A plurality of connecting run grooves 18a, 20a, 22a, 24a, 18b, 20b, 22b, 24b may be fluidly connected to the same lubricant supply path 16 or one connecting running groove 18a, 20a, 22a, 24a, Of course, it is also possible to dispose a plurality of lubricant supply paths 16 in 18b, 20b, 22b, and 24b. For example, lubricant may be supplied to the connected connecting run grooves 18b and 20b, respectively, via the same lubricant supply path on one side of the rail.

FIG. 3 shows a cross-sectional view taken along line AA of FIG. 2, while FIG. 4 shows a cross-sectional view taken along line BB of FIG. As can be seen from FIG. 3, the lubricant supply element 6 incorporates four lubricant distribution elements 26, 28, 30, 32.

Lubricant distribution elements 26, 28, 30, 32 are designed to distribute a specified amount of lubricant. At that time, each of the lubricant distribution elements 26, 28, 30, 32 is fluidly connected to one of the lubricant supply paths 16 (see FIG. 4). Alternatively, the lubricant distribution elements 26, 28, 30, 32 may also be connected to the plurality of lubricant supply channels. The lubricant distribution elements 26, 28, 30, 32 themselves are supplied with lubricant via the lubricant main conduit passage 34 connected to the lubricant main conduit connecting portion 36. Alternatively, each lubricant distribution element 26, 28, 30, 32 may also be supplied with lubricant via a separate supply pipe.

Designed to receive one sensor 40 in each of the lubricant supply elements 6 to monitor the lubricant supply to the connecting run grooves 18a, 20a, 22a, 24a, 18b, 20b, 22b, 24b. The sensor receiving unit 38 (FIG. 4) is formed. The sensor 40 may be particularly suitable for monitoring the lubricant flow or lubricant supply.

The sensor signal of the sensor 40 is sent to the sensor signal evaluation electronic device 44 (FIG. 2) provided for appropriately evaluating the sensor signal and providing evaluation data via the sensor signal lead wire 42. Preferably, the sensor signal evaluation electronic device 44 may be incorporated in the lubricant supply element 6. For example, a receptacle that can accept the lubricant supply element 6 may be provided. Alternatively or additionally, the sensor signal may be transmitted wirelessly. Preferably, for each lubricant supply path, there is one sensor each with a sensor receiver. Additional or alternative, one sensor may be provided for each lubricant distribution element.

In summary, the lubricant supply element 6 provided between the first partial guide carriage 2 and the second partial guide carriage 4 of the guide carriage 1 so that the rolling elements of the linear guide pass through the lubricant supply element 6. Is provided. Thereby, on the one hand, higher flexibility can be achieved with respect to the placement of the lubricant supply, and on the other hand, the lubricant supply can be improved even when the guide carriage is long.

Further, since one lubricant distribution element 26, 28, 30, 32 and a sensor may be arranged in each lubricant supply path 16, an individually adjustable amount of lubricant is supplied to each lubricant. Since it can be supplied to the road 16 and this amount can also be monitored individually, it is possible to control and monitor the respective lubricant supply status for the corresponding traveling groove.

1 Guide carriage 2 1st partial guide carriage 4 2nd partial guide carriage 6 Lubricant supply elements 8, 10, 12, 14 Travel groove vs. 8a, 10a, 12a, 14a Forward groove 8b, 10b, 12b, 14b Retrograde Groove 16 Lubricant supply path 18a, 20a, 22a, 24a Connection carriage (forward)
18b, 20b, 22b, 24b connection running groove (reverse)
26, 28, 30, 32 Lubricant distribution element 34 Lubricant main conduit 36 Lubricant main conduit connection 38 Sensor receiver 40 Sensor 42 Sensor signal lead 44 Sensor signal evaluation Electronic equipment

Claims (10)

An at least one first partial guide carriage (2) having at least one first and second running grooves (8a, 10a, 12a, 14a; 8b, 10b, 12b, 14b) extending in the axial direction.
It has at least one second partial guide carriage (4) having at least one first and second running grooves extending in the axial direction.
In the guide carriage (1) for the linear guide,
A lubricant supply element (6) is provided between the first partial guide carriage (2) and the second partial guide carriage (4), and the lubricant supply element (6) is the first. On the axial side of 1, the first and second traveling grooves (8a, 10a, 12a, 14a; 8b, 10b, 12b, 14b) of the first partial guide carriage (2), and the first. The first connecting traveling groove (18a, 20a,) extending in the axial direction, which is connected to the first and second traveling grooves of the second partial guide carriage (4) on the axial side of 2. The lubricant supply element (6) has at least one of the connecting carriages (18a, 20a) having a 22a, 24a) and a second connecting carriage (18b, 20b, 22b, 24b) extending axially. , 22a, 24a; 18b, 20b, 22b, 24b), the guide carriage (1) comprising at least one lubricant supply path (16) fluidly connected. A plurality of the first and second traveling grooves (8a, 10a, 12a, 14a; 8b, 10b, 12b, 14b) are formed in the first and second partial guide carriages (2, 4). The lubricant supply element (6) is connected to the first and second traveling grooves of the first and second partial guide carriages (2, 4), respectively. The guide carriage (1) according to claim 1, wherein the first and the second connecting traveling grooves (18a, 20a, 22a, 24a; 18b, 20b, 22b, 24b) are formed. The lubricant supply path (16) is fluidly connected to the plurality of first and / or plurality of said second connecting carriages (18a, 20a, 22a, 24a; 18b, 20b, 22b, 24b). The guide carriage (1) according to claim 1 or 2. Each of the first and / or the second connecting carriages (18a, 20a, 22a, 24a; 18b, 20b, 22b, 24b) is one or more separate lubricant supply paths (16). The guide carriage (1) according to claim 1 or 2, which is connected to the guide carriage (1). The first carriage (8a, 10a, 12a, 14a) and the first connecting carriage (18a, 20a, 22a, 24a) are formed as forward grooves for at least one rolling element. The rolling elements are designed such that the guide carriage (1) is in contact with a movable rail along the rail and the guide carriage (1) is movably bearing on the rail. In the second traveling groove (8b, 10b, 12b, 14b) and the second connecting traveling groove (18b, 20b, 22b, 24b), at least one of the rolling elements is formed on the rail. Formed as a non-contact guided retrograde groove, at least one of the lubricant supply paths (16) is fluidly connected to at least one of the retrograde grooves (18b, 20b, 22b, 24b). And / or each of the lubricant supply paths (16) is connected to one of the retrograde grooves (18b, 20b, 22b, 24b), according to any one of claims 1 to 4. The guide carriage (1) described. The lubricant supply element (6) further comprises at least one receiver and is designed to distribute a defined amount of lubricant in and / or in contact with the receiver. 10. One of claims 1-5, wherein the agent distribution element (26, 28, 30, 32) and / or the sensor (40) designed to monitor the lubricant supply can be attached. Guide carriage (1). The guide carriage (1) according to claim 6, wherein each of the lubricant supply paths (16) is provided with one lubricant distribution element (26, 28, 30, 32). Each of the lubricant supply paths (16) is provided with one sensor (40), and / or each of the lubricant distribution elements (26, 28, 30, 32). The guide carriage (1) according to claim 6 or 7, wherein one sensor (40) is provided for each. Each of the lubricant distribution elements (26, 28, 30, 32) and / or the sensor (40) is received by a separate receptor, preferably the lubricant supply element. Since formed as a cavity within (6), the lubricant distribution element (26, 28, 30, 32) and / or the sensor (40) can be incorporated into the lubricant supply element (6). , The guide carriage (1) according to any one of claims 6 to 8. The second partial guide carriage (4) is formed as an end cap of the guide carriage (1), and the first and second traveling grooves of the end cap are connected via a U-turn lane. The guide carriage (1) according to any one of claims 1 to 9.