JPH06246584A - Leakage preventing device of lubricating oil from sliding face in feed mechanism - Google Patents

Abstract

PURPOSE:To prevent lubricating oil from being intermixed with cutting oil due to the leakage of the lubricating oil to the outside of the guide face of a slide base from the sliding face of a sliding body so as to prolong the service life of the cutting oil and to enable the reuse of the lubricating oil. CONSTITUTION:A saddle 3 serving as a sliding body is slidably supported along the guide face 20 of a slide base 1. A wiper 13 is fitted to the end face of the saddle 3, and chips and dust stuck to the guide face 2a is scraped off by the sliding contact of the wiper 13 with the guide face 2a. A seal 17 is provided between the wiper 13 and the end face of the saddle 3 so as to prevent lubricating oil from leaking to the outside of the guide face 2a of the slide base 1 from the sliding face 3a of the saddle 3. An oil recovery hole 10 is piercingly formed at the saddle 3, and the lubricating oil in an oil groove 5 is recovered through this oil recovery hole 10 so as to be used repeatedly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating oil leakage prevention device for a sliding surface of a feed mechanism of a machine tool or the like.

[0002]

2. Description of the Related Art Conventionally, in a feed mechanism in which a sliding body is slid along a guide surface of a slide base, a wiper is attached to the sliding body. Then, when the sliding body slides, the wiper slides on the guide surface to scrape and scrape off chips and dust adhering to the guide surface.

[0003]

However, since this wiper does not have a function of preventing leakage of the lubricating oil supplied to the sliding surface of the sliding body, the lubricating oil guides the sliding surface of the sliding body and the slide base. There is a risk of leaking out from between the surface and mixing with the cutting oil. Therefore, there is a problem that the cutting oil is easily deteriorated to shorten the service life and the consumption amount of the lubricating oil is increased.

The present invention has been made by paying attention to the problems existing in the prior art as described above, and its purpose is to guide the lubricating oil to the sliding surface of the sliding body and the slide base. It is possible to prevent leakage from the surface to the outside as much as possible, prevent mixing into cutting oil, prevent deterioration of cutting oil and extend service life, and reduce consumption of lubricating oil Another object of the present invention is to provide a lubricating oil leakage prevention device for a sliding surface of a feed mechanism that can be used.

[0005]

In order to achieve the above-mentioned object, in the first invention, in the feed mechanism in which the slide body is slid along the guide surface of the slide base, In addition to the wiper slidingly contacting the guide surface and scraping the guide surface, a seal is provided between the wiper and the sliding body to prevent leakage of lubricating oil from the sliding surface of the sliding body, and An oil recovery hole communicating with the sliding surface is formed in the sliding body.

In the second invention, the guide surface of the slide base is composed of at least two surfaces, and the seals are provided corresponding to the respective guide surfaces.

[0007]

In the lubricating oil leakage prevention device for the sliding surface of the feed mechanism configured as described above, when the sliding body slides along the guide surface of the slide base, the wiper slides on the guide surface, Cutting chips and dust adhering to the guide surface are scraped. Further, when the sliding body slides, lubricating oil is supplied to the sliding surface of the sliding body with respect to the guide surface of the slide base, but since a seal is provided between the wiper and the side surface of the sliding body, lubrication is performed. Oil does not leak outside between the sliding surface of the sliding body and the guide surface of the slide base.

Thus, the shielded lubricating oil is recovered from the oil recovery hole into the tank and reused. Therefore, it is possible to prevent the lubricating oil from mixing into the cutting oil, prevent the deterioration of the cutting oil and extend the service life,
The consumption of lubricating oil can be considerably reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a lubricating oil leakage prevention device for a sliding surface in a feed mechanism embodying the present invention will be described below with reference to FIGS.
This will be described in detail with reference to FIG.

As shown in FIGS. 2 to 4, the slide base 1 has a pair of guide rails 2 projectingly provided on its upper surface, and the guide surfaces 2a, 2 are provided on the upper surface, the inner surface and the lower surface of each guide rail 2.
b and 2c are formed. A saddle 3 as a sliding body is slidably supported on a guide rail 2 of a slide base 1, and has a lower surface on which a sliding surface 3 slidably contacting the guide surfaces 2a and 2b.
a and 3b are formed. The pair of contact plates 4 are fixed to the lower surfaces of both sides of the saddle 3, and the guide surfaces 2c are provided on their upper surfaces.
Is formed with a sliding surface 4a.

As shown in FIGS. 1 and 5, the oil groove 5 is formed in the sliding surfaces 3a, 3b, 4a of the saddle 3 and the contact plate 4, and an oil sump portion 6 is formed at the outer end of the oil groove 5. It is formed so as to extend to the outer side surface of the contact plate 4. Oil supply hole 7 is saddle 3
The lubricating oil in the tank 8 is formed by penetrating into the oil groove 5 by the pump 9 via the oil supply hole 7. The oil recovery hole 10 is formed through the saddle 3, and after the lubricating oil in the oil groove 5 is recovered through the oil recovery hole 10, the filter 1
It is returned to the tank 9 through 1.

Lubricating oil leakage prevention devices 12 are provided on both end faces of the saddle 3. And this leak prevention device 1
The scrap 2 scrapes off chips and dust adhering to the guide surfaces 2a to 2c of the slide base 1, and the saddle 3
Also, the leakage of the lubricating oil from the sliding surfaces 3a, 3b, 4a of the contact plate 4 onto the guide surfaces 2a to 2c of the slide base 1 is prevented as much as possible.

Therefore, the lubricating oil leakage prevention device 12 will be described in detail. Wiper 1 made of elastic material such as synthetic rubber
3 are attached to both end surfaces of the saddle 3 by a plurality of bolts 14, and wiper pieces 13a that are in sliding contact with the guide surfaces 2a to 2c of the slide base 1 are formed on the inner peripheral edges of them. A plurality of scraping plates 15 made of a metal plate such as an iron plate are attached to the outer surface of the wiper 13, and their tips are in sliding contact with the guide surfaces 2a to 2c.

The metal seal holder 16 is interposed and fixed between the wiper 13 and both end surfaces of the saddle 3, and particularly, the receiving groove 16a is formed at the edge portion facing the guide surface 2a to which a large amount of lubricating oil is supplied. Are formed. The seal 17 and the pressing body 18, which are made of an elastic material such as rubber, are housed in the housing groove 16a of the seal holder 16, and by the elastic action of the pressing body 18,
The edge of the seal 17 is in pressure contact with the guide surface 2a of the slide base 1.

Next, the operation of the lubricating oil leakage prevention device for the sliding surface of the feed mechanism constructed as described above will be described. Now, in the lubricating oil leakage prevention apparatus of the first embodiment, when the saddle 3 is slid along the guide rail 2 of the slide base 1, the wiper piece 13a of the wiper 13 and the scraping plate 15 of the guide rail 2 are moved. The chips and dust adhering to the guide surfaces 2a to 2c are scraped off by slidingly contacting the guide surfaces 2a to 2c. Also, when the saddle 3 slides,
The pump 9 is operated every predetermined time, and the lubricating oil is periodically fed under pressure to the sliding surfaces 3a, 3b, 4a of the saddle 3 and the contact plate 4 with respect to the guide surfaces 2a to 2c of the slide base 1.

At this time, since the seal 17 is provided between the wiper 13 and the end surface of the saddle 3 and is pressed against the guide surface 2a, the lubricating oil supplied to the guide surface 2a is guided by the slide base 1. It does not leak out of the surface 2a.
Therefore, it is possible to surely prevent the lubricating oil from being mixed with the cutting oil, prevent the cutting oil from deteriorating, and repeatedly use it for a long period of time, thereby extending the service life of the cutting oil. Moreover, since the lubricating oil can be recovered from the oil recovery hole 10 and repeatedly used, the consumption amount of the lubricating oil can be reduced.

[0017]

Another Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. Now, FIG. 6, FIG. 10 and FIG.
As shown in FIG. 2, in the second embodiment, the seal 17 is pressed against the other guide surfaces 2b and 2c of the guide surface 2a formed on the upper surface of the slide base 1 as compared with the first embodiment. It is placed in contact. That is, each guide surface 2
A housing groove 16a is formed at each of three edges of the seal holder 16 that faces a, 2b, and 2c. Then, the seal 17 and the pressing body 18 are housed in the housing grooves 16a, respectively, and the elastic action of the pressing body 18 causes the end edges of the seal 17 to be guided by the guide surfaces 2a, 2b, 2c of the slide base 1, respectively. It is pressed and contacted.

Further, in the second embodiment, as shown in FIGS. 7 to 9 and 12, on one guide rail 2 side, a guide surface 2b formed on the outer side surface of the guide rail 2 is provided.
And a saddle 3, a jib 21 having a planar wedge shape is arranged along the longitudinal direction of the saddle 3. As shown in FIG. 8, the jib 21 has an inclined contact surface with the saddle 3 so that the width becomes narrower as it goes upward in the figure. The contact surface of the saddle 3 with the jib 21 is also formed in a slanted shape along the slanted surface of the jib 21. Also, jib 2
On the surface of the first guide rail 2 facing the guide surface 2b, a sliding surface 21a that is in sliding contact with the guide surface 2b is formed.

An insertion groove 22 is formed on one end surface side of the saddle 3 at a position adjacent to the jib 21, and the insertion groove 2 is formed.
A cylindrical body 23 having a predetermined length is arranged inside the unit 2. The fixing plate 24 is disposed so as to face each end surface of the jib 21 and the tubular body 23, and the fixing plate 24 is fixed to the end surface of the jib 21 by a bolt 25. Then, the fixing plate 24 and the tubular body 23
When the bolt 26 is inserted into the saddle 3, the bolt 26 is screwed to the saddle 3, so that the jib 21 is integrally movably fixed to the saddle 3.

In this case, the position of the jib 21 with respect to the saddle 3 in the longitudinal direction (vertical direction in FIG. 8) is changed by changing the tubular body 23 to have a different length. Accordingly, as shown in FIG. 7, the guide surfaces 2 of the left and right guide rails 2 are
The width H2 between the sliding surface 3b formed on the inner surface of the saddle 3 and the sliding surface 21a of the jib 21 is changed with respect to the width H1 between the b. Therefore, by changing the tubular body 23 to one having a different length and adjusting the width H2 thereof to the optimum width,
The saddle 3 can be slid smoothly along the guide rail 2 without rattling.

As shown in FIGS. 8, 9 and 11, the seal holder 1 is provided on the side where the jib 21 is provided.
A pressing plate 27 is interposed and fixed between 6 and the end surface of the saddle 3. In other words, by providing the jib 21,
In particular, the seal 17 and the pressing body 18, which are arranged to face the guide surface 2b of the guide rail 2, are in a state of being opened to the end face side of the saddle 3. Therefore, the pressing plate 27 presses the seal 17 and the pressing body 18 from the end surface side of the saddle 3,
They are prevented from coming off from the inside of the accommodation groove 16a of the seal holder 16.

As shown in FIGS. 7, 8 and 12, an oil groove 5 is formed on the sliding surface 21a of the jib 21.
On the surface opposite to the sliding surface 21a, that is, the contact surface with the saddle 3, a long groove 21b extending in the longitudinal direction of the jib 21 is formed.
The long groove 21b and the oil groove 5 are communicated with each other through a communication hole 21c formed through the jib 21.
The oil supply hole 7 formed in the saddle 3 communicates with the oil groove 5 via the long groove 21b and the communication hole 21c.

As shown in FIGS. 7, 10 and 12, also in the second embodiment, as in the first embodiment, the oil groove 5 has the sliding surfaces 3a of the saddle 3 and the contact plate 4 respectively. , 3
b, 4a. The oil supply holes 7 formed in the saddle 3 and the contact plate 4 communicate with the oil grooves 5, respectively. Although not particularly shown, in the second embodiment as well, as in the first embodiment, the lubricating oil in the tank is supplied to each oil groove 5 via the oil supply hole 7 by the pump. Although not shown, this second
Also in the embodiment, the oil recovery hole is formed in the saddle 3 and the contact plate 4 similarly to the oil supply hole 7, and the lubricating oil in each oil groove 5 is recovered through the oil recovery hole, and then the filter Returned to the tank through.

10 to 12, 28 is a bolt for fixing the contact plate 4 to the saddle 3. Again 2
Reference numeral 9 denotes a seal ring which is interposed and fixed between the contact plate 4 and the saddle 3 so as to be located around the oil supply hole 7 and an oil recovery hole (not shown). The seal ring 29 prevents the lubricating oil flowing through the oil supply hole 7 and the oil recovery hole (not shown) from leaking between the contact plate 4 and the saddle 3.

Now, in the lubricating oil leakage prevention apparatus of the second embodiment, when the saddle 3 is slid along the guide rail 2 of the slide base 1, the wiper piece 13 of the wiper 13 is moved.
a and the scraping plate 15 are guide surfaces 2a to 2 of the guide rail 2.
Sliding contact with c and scraping off chips and dust adhering to the guide surfaces 2a to 2c. Also, when the saddle 3 is sliding, a pump (not shown) is operated every predetermined time,
Saddle 3 for the guide surfaces 2a to 2c of the slide base 1
Lubricating oil is periodically pumped and supplied to the sliding surfaces 3a, 3b, 4a of the contact plate 4.

At this time, a seal 17 is provided between the wiper 13 and the end surface of the saddle 3, and the guide surfaces 2a to 2a are provided.
Since it is pressed against c, the lubricating oil supplied to the guide surfaces 2a to 2c does not leak out of the guide surfaces 2a to 2c of the slide base 1. Therefore, as in the first embodiment, it is possible to reliably prevent the possibility that the lubricating oil will be mixed with the cutting oil, prevent the deterioration of the cutting oil, and repeatedly use it for a long time. The life can be extended. Further, since the lubricating oil can be recovered from the oil recovery hole (not shown) and repeatedly used, the effect of reducing the consumption of the lubricating oil is similar to that of the first embodiment.

Moreover, in the second embodiment, the seal 17 is used.
Are arranged in pressure contact with all the guide surfaces 2a to 2c of the slide base 1, so that it is possible to more reliably prevent the lubricating oil from leaking from the guide surfaces 2a to 2c as compared with the first embodiment. it can. Therefore, the service life of the cutting oil can be further extended and the consumption amount of the lubricating oil can be further reduced.

In addition, in this second embodiment, the cylindrical body 23
By changing the length of the jib 21 relative to the saddle 3 in the longitudinal direction, the width H2 between the sliding surface 3b of the inner surface of the saddle 3 and the sliding surface 21a of the jib 21 is changed. Can be changed and adjusted. Therefore, saddle 3
Even when there is rattling between the saddle 3 and the guide rail 2 when sliding, the width H2 is adjusted to an optimum width so that the saddle 3 can be smoothly moved along the guide rail 2 without rattling. It can be slid.

The present invention is not limited to the structure of the above-described embodiment, and for example, the shape and structure of the wiper 13 and the mounting structure of the seal 17 may be changed as appropriate without departing from the spirit of the present invention. Then, it is also possible to embody by arbitrarily changing the configuration of each part.

[0030]

Since the present invention is configured as described above, it is possible to prevent the lubricating oil from leaking out from the sliding surface of the sliding body to be mixed into the cutting oil. It is possible to prevent deterioration of the product and prolong its service life, and at the same time, it is possible to reduce consumption of the lubricating oil and enable reuse.

[Brief description of drawings]

1 shows a first embodiment of a lubricating oil leakage prevention device for a sliding surface in a feed mechanism embodying the present invention, and FIG.
4 is a partial cross-sectional view taken along line BB of FIG.

FIG. 2 is a front view showing the overall configuration of a feeding mechanism.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a partial cross-sectional view showing a part of FIG. 3 in an enlarged manner.

FIG. 5 is a perspective view showing various parts of the lubricating oil leakage prevention device shown in FIG. 4 in a disassembled state and turned upside down.

FIG. 6 is a sectional view taken along line CC of FIG. 9, showing a second embodiment of the lubricating oil leakage prevention device for the sliding surface in the feed mechanism of the present invention.

7 is a cross-sectional view taken substantially along the line DD of FIG.

FIG. 8 is a partial plan view showing a part of the feeding mechanism in a cutaway manner.

9 is a partial cross-sectional view taken substantially along the line EE in FIG.

FIG. 10 is a perspective view showing parts of the lubricating oil leakage prevention device in a disassembled state and turned upside down.

FIG. 11 is a perspective view showing the parts of the lubricating oil leakage prevention device in a disassembled and upside-down state on the side where the jib is provided.

FIG. 12 is a perspective view showing a state in which the jib is disassembled and turned upside down.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Slide base, 2 ... Guide rail, 2a-2c ... Guide surface, 3 ... Saddle as a sliding body, 3a, 3b ... Sliding surface, 4 ... Contact plate, 4a ... Sliding surface, 5 ... Oil groove, 10 ... Oil recovery hole, 12 ... Lubricating oil leak prevention device, 13 ... Wiper, 16
... seal holder, 17 ... seal, 21a ... sliding surface.

Claims (2)

[Claims] 1. A feed mechanism in which a slide body is slid along a guide surface of a slide base, wherein the slide body has a wiper slidingly contacting the guide surface and scraping the guide surface. A seal is provided between the wiper and the sliding body to prevent lubricating oil from leaking from the sliding surface of the sliding body, and the sliding body is provided with an oil recovery hole communicating with the sliding surface. Lubricating oil leakage prevention device on the sliding surface of the feed mechanism. 2. The slide mechanism according to claim 1, wherein the guide surface of the slide base is composed of at least two surfaces, and the seals are provided corresponding to the respective guide surfaces. Lubricating oil leakage prevention device for moving surfaces.