JP6340324B2 - Sliding guide device - Google Patents

Description

  The present invention relates to a slide guide device that prevents foreign matter from entering between a sliding surface of a moving body and a guide surface of a base in a guide device used in a machine tool.

  In the sliding guide device, when foreign matter such as chips enters between the guide surface of the base and the sliding surface of the moving body, lubrication is poor and seizure or a failure of the machine tool is caused. In order to prevent this, lubricating oil is periodically supplied between the guide surface and the sliding surface, and the foreign matter is forced out of the guide surface. The lubricating oil that has flowed out of the guide surface is collected in the lubricating oil tank. At that time, since it is difficult to separate and collect the cutting oil and the lubricating oil used when cutting, the lubricating oil and the cutting oil are collected together. Thereafter, the cutting oil and the lubricating oil are separated, the cutting oil is reused, and the lubricating oil is discarded.

  Discarding the lubricating oil resulted in high costs due to an increase in the purchase cost of new lubricating oil, which was uneconomical. In addition, frequent replacement of the cutting oil also induces a problem of increasing industrial waste (waste oil).

  Therefore, as a conventional slide guide device, a base having a flat guide surface and a moving body having a sliding surface slidingly contacting the guide surface and moving relative to the base, the guide surface includes 2. Description of the Related Art A frame groove-shaped lubricating oil recovery groove having a long side and a short side along the periphery is known. (See Patent Document 1 below).

Japanese Patent Application Laid-Open No. 11-280995

  The slip guide device as described above collects lubricating oil mixed with foreign matter from the guide device, and then separates the foreign matter from the lubricating oil with a filter. Therefore, the slip guide device from the side between the guide surface and the sliding surface is used. There was no need to consider the entry of foreign objects. However, since the amount of foreign matter entering between the sliding surface and the guide surface has increased from the side of the slide guide device due to the increase in the types of work materials, it is necessary to consider the prevention of foreign matter intrusion of the slide guide device. Has increased.

  The object of the present invention is to collect lubricating oil that has flowed out between the sliding surface of the moving body and the guide surface of the base, and from the side of the slide guide device, the sliding surface of the moving body and the guide surface of the base It is an object of the present invention to provide a slide guide device that prevents foreign matter from entering between.

  A slide guide device according to the present invention is a slide guide device in which a sliding surface of a moving body is slid on a guide surface of a base via lubricating oil, and the moving body includes a guide surface and a sliding surface. A side skirt portion extending downward along the side surface of the base is formed so as to cover the side of the gap, and the side skirt portion is an upper surface that opens upward on an inner surface portion facing the side surface of the base. The upper part of the side surface of the base has a lower lubricating oil storage recess, so that the lubricating oil flowing out from the side of the gap between the guide surface and the sliding surface is guided to the lubricating oil storage recess. A hanging wall portion is formed to divide the lubricating oil storage recess into two chambers, the inner and outer chambers communicating with each other at the bottom, and the both ends of the lubricating oil storage recess in the side skirt portion can be passed through the same portion. The space between the hanging wall is sealed with a contact seal, and the side skirt is A lubricating oil discharge passage for discharging lubricating oil in the lubricating oil storage recess is formed, and the level of the lubricating oil in the lubricating oil storage recess is set to a position higher than the tip of the drooping wall by the discharge control means. It is characterized by being held.

  The side skirt portion is provided at an end portion in the width direction of the moving body and receives the lubricating oil that has flowed out to the left and right of the guide surface, and a base portion that is perpendicular to the outer wall from the lower end of the outer wall. And an inner wall extending vertically upward from the tip of the bottom wall and having a bowl-like lubricating oil storage recess opened upward.

  You may provide the clearance gap between the inner wall of a side skirt part, and the side surface of a base for preventing the friction with the inner wall and base side accompanying the movement of a moving body.

  According to this invention, since the side skirt portion is provided on the movable body so as to cover the side of the gap between the guide surface and the sliding surface, foreign matter can be prevented from entering between the guide surface and the sliding surface. Can be blocked.

  In this invention, the lubricating oil discharge part is opened at a position lower than the inflow opening on the surface of the side skirt part and the inflow opening opened to a position above the tip of the hanging wall part in the lubricating oil storage recess. It is preferable that the discharge control means is constituted by an overflow hole having an outlet formed therein.

  In this way, when a certain amount of lubricating oil is stored in the lubricating oil storage recess, the lubricating oil flows out of the sliding guide device from the inside of the lubricating oil storage recess. When the is connected, the lubricating oil can be recovered.

  According to the slip guide device of the present invention, the side skirt portion can prevent foreign matter from entering between the guide surface of the base and the sliding surface of the movable body. Furthermore, even if foreign matter enters the gap between the inner side wall of the side skirt portion and the side surface of the base from the lower side of the side skirt portion, if the lubricating oil is accumulated in the lubricating oil storage recess, it is stored. The lubricating oil prevents foreign matter from entering between the guide surface and the sliding surface. In addition, since the lubricating oil that has flowed out between the guide surface and the sliding surface is guided to the hanging wall portion and collected by the discharge control means, the coolant liquid (cutting oil) used during the cutting operation is discharged control means. When recovered by a recovery device different from the hanging wall portion, the mixture of the coolant liquid and the lubricating oil can be suppressed, and the deterioration of the coolant liquid and the decrease in the service life can be suppressed.

It is a front view of the slip guide apparatus which concerns on one Embodiment of this invention. It is a right view of the same guidance device. FIG. 3 is a horizontal sectional view taken along line III-III in FIG. 1. FIG. 4 is a vertical sectional view taken along line IV-IV in FIG. 2.

Embodiments of the present invention will be described below with reference to the drawings.
In this embodiment, the left side of FIG. 1 is “left”, the right side is “right”, the front side of the drawing is “front”, and the back side is “rear”.
As shown in FIG. 1 and FIG. 2, the sliding guide device (1) has a flat guide surface (2a) extending in the front-rear direction and a side surface (2b) extending downward from the guide surface (2a) to the left and right. A movable body having a base (2) having a sliding surface (3a) that can be slid on the guide surface (2a) of the base (2) via a lubricant and moving back and forth on the guide surface (2a) The width of the movable body (3) extending downward along the side surface (2b) of the base (2) so as to cover the side of the gap between (3) and the guide surface (2a) and the sliding surface (3a) It has side skirt portions (4) formed at both ends in the direction, and a hanging wall portion (5) provided on the upper edge of the side surface (2b) of the base (2) and extending downward.

  The base (2) is formed on a lathe bed (not shown) and has a base (21) whose upper surface is a guide surface (2a), and a guide surface of the base (21) ( It comprises a sliding guide part (22) formed on the base part (21) extending in parallel with the longitudinal direction with respect to 2a). The sliding guide part (22) has a narrow part (22a) provided on the central upper surface in the width direction of the base part (21), and a projecting piece projecting parallel to the guide surface (2a) in the left-right direction. It consists of a wide part (22b). A concave groove (22c) extending in the front-rear direction at the center in the width direction of the sliding guide portion (22) is opened from the wide portion (22b) to the narrow portion (22a).

  The movable body (3) includes an upper wall (31) having a flat upper surface and extending in the front-rear direction, a side wall (32) extending vertically downward from the left and right sides of the upper wall (31), and a side wall (32). And a lower wall (33) that extends inward in the width direction and is partially opened, the widthwise vertical cross-sectional shape is formed in a substantially box shape. The distance between the inner surfaces of the left and right side walls (32) and (32) is substantially the same as the width of the wide part (22b) so that the wide part (22b) fits between the left and right side walls (32) and (32). . The center in the width direction of the lower wall (33) is opened with a length substantially the same as the width of the narrow portion (22a) so that the narrow portion (22a) fits. The lower surface of the lower wall (33) forms a sliding surface (3a) and is in contact with the guide surface (2a) of the base portion (21) through the lubricating oil.

  The movable body (3) is slidably fitted with the sliding guide portion (22) so as to surround the wide portion (22b) and so that the center in the width direction of the lower wall (33) sandwiches the narrow portion (22a). Yes. A ball nut (34) supported by a ball screw (6) is provided at the center of the inner surface of the upper wall (31) of the movable body (3). The concave groove (22c) is formed larger than the ball nut (34), and the ball nut (34) is fitted with a gap between the concave groove (22c).

  A substantially flat wiper (7) having a predetermined thickness is attached to the front end surface (3b) and the rear end surface (3c) of the moving body (3). The wiper (7) is formed of a flexible synthetic resin or the like that can be bent with a predetermined force, and has a substantially box shape that is the same as the longitudinal cross-sectional shape of the movable body (3). The lower end portion (7a) of the wiper (7) attached to the front end surface (3b) is smoothly curved in the forward direction and is tapered to contact the guide surface (2a) of the base portion (21). The lower end portion (7a) of the wiper (7) attached to the rear end surface (3c) is smoothly curved in a rearward direction and is tapered to be in contact with the guide surface (2a) of the base portion (21). The wiper (7) moves to the outside of the guide surface (2a) while wiping off foreign matter that has entered the guide surface (2a) from the front-rear direction of the sliding guide device (1) as the moving body (3) moves in the front-rear direction. It is supposed to be eliminated.

  A supply port (not shown) that opens upward is formed at the center in the width direction of the left and right guide surfaces (2a) and (2a) of the base portion (21), and a lubricant supply device that supplies lubricant to the guide surface (2a) ( (Not shown) is connected from below the supply port.

  One supply port may be formed on each of the left and right guide surfaces (2a) and (2a), or a plurality of supply ports may be formed at regular intervals in the front-rear direction.

  The lubricating oil supply device is installed outside the sliding guide device (1) together with a lubricating oil tank (not shown) filled with lubricating oil, receives the lubricating oil from the lubricating oil tank, and receives left and right guide surfaces (21) of the base (21) ( 2a) Lubricating oil is supplied to the guide surface (2a) from the supply port provided in (2a). The lubricating oil supplied to the guide surface (2a) is diffused over the entire surface of the guide surface (2a) and the sliding surface (3a) by the reciprocating movement of the moving body (3).

  The left and right end portions of the lower wall (33) of the movable body (3) are formed with recesses (33a) extending forward and backward, and the side skirt portion (4) is attached downward to the recess (33a).

  As shown in FIG. 4, the side skirt portion (4) includes an outer wall (41) that receives lubricating oil that has flowed outward from the left and right sides of the guide surface (2a), and an outer wall ( 41) formed by a bottom wall (42) extending inward in the width direction of the base (21) and an inner wall (43) extending vertically upward from the tip of the bottom wall (42) so as to form a right angle with respect to 41). It has a bowl-like lubricating oil storage recess (44) opened upward. The outer surface of the outer wall (41) of the side skirt portion (4) and the outer surface of the side wall (32) of the movable body (3) are flush with each other. The side skirt portion (4) is formed with the same length as the length of the sliding surface (3a) of the moving body (3) in the front-rear direction, and the capacity of the lubricating oil storage recess (44) is determined by the guide surface. It is determined by the amount of lubricating oil supplied to (2a) and the installation angle of the slip guide device (1).

  A linear step formed by an upper stage on the base (21) side and a lower stage on the lubricating oil storage space side is formed in the upper part of the inner wall (43) so as to extend in the front-rear direction. The lower stage is formed so as to be positioned above the tip of the hanging wall part (5).

  The inner wall (43) is formed with a lubricating oil discharge passage (45) for discharging the lubricating oil in the lubricating oil storage recess (44). The lubricating oil discharge passage (45) has an inflow opening (45a) opened upward at the lower stage of the upper part of the inner wall (43) located above the tip of the hanging wall (5) in the lubricating oil storage recess (44). ) And an outlet port (45b) opened downward from the inlet port (45a) on the surface of the side skirt portion (4).

  The discharge control means (46) is configured by an overflow hole provided in the inner wall (43) with a certain interval in the front-rear direction. Since the inlet (45a) of the overflow hole constituting the discharge control means (46) is located above the tip of the drooping wall (5), the oil level of the lubricating oil in the lubricating oil storage recess (44) The level is held at a position above the tip of the drooping wall (5). Since the oil level exceeding the height of the inlet (45a) flows into the overflow hole, the highest oil level is substantially the same as the height of the inlet (45a). Therefore, the highest oil level is determined by the height of the inlet (45a) of the overflow hole.

  If the discharge control means (46) has a structure capable of determining the oil level of the lubricating oil storage recess (44), for example, the lubricating oil can flow through the bottom wall (42) instead of the overflow hole. A through-hole with a lid penetrating in the vertical direction may be formed and the lid may be opened and closed by a sensor or the like, and the oil level may be appropriately discharged by opening and closing the lid to keep the oil level constant.

  The outlet (45b) of the lubricating oil discharge passage (45) is connected to a lubricating oil recovery tank (not shown) for recovering the lubricating oil.

  The hanging wall (5) is provided on the upper edge of the side surface (2b) of the base (2) so that the upper surface thereof is flush with the guide surface (2a) of the base (2). ) And the sliding surface (3a) so that the lubricating oil flowing out from the side of the gap extends downward and communicates at the bottom with the lubricating oil storage recess (44) so as to guide it to the lubricating oil storage recess (44). It is formed so as to be divided into two chambers inside and outside. The hanging wall (5) is formed with the same length as the length in the front-rear direction of the guide surface (2a) of the base (2). The downward length of the drooping wall portion (5) is determined by the direction and installation angle of the slip guide device (1).

  As shown in FIGS. 1 to 3, a drooping wall portion (5) that is penetrated through the same portion as both end portions of the lubricating oil storage recess (44) at both ends in the front-rear direction of the side skirt portion (4). A contact seal (8) is provided for sealing between the two. The contact seal (8) prevents the lubricating oil from flowing out from the front-rear direction of the drooping wall portion (5) and the lubricating oil storage recess (44).

  A gap is provided between the inner side wall (43) of the side skirt portion (4) and the side surface (2b) of the base portion (21) so that friction is not generated by the movement of the moving body (3).

  As shown in FIGS. 3 and 4, since the contact seal (8) is fixed to the side skirt (4), the movable body (3) reciprocates in the front-rear direction and the contact seal (8) also reciprocates. Moving. Since the hanging wall portion (5) is fixed to the side surface (2b) of the base (2), the hanging wall portion (5) remains stationary even when the moving body (3) reciprocates.

Next, a lubricating oil recovery method in the slip guide device (1) of the present invention will be described with reference to FIGS.
The lubricating oil is supplied from the lubricating oil tank onto the guide surface (2a) of the base (2) by the lubricating oil supply device. The supplied lubricating oil causes the moving body (3) to slide smoothly on the guide surface (2a) of the base (2) and penetrates from the front-rear direction of the slide guide device (1) by cutting work or the like. The foreign matter adhering to the guide surface (2a) is pushed away outward in the front-rear direction and the left-right direction of the guide surface (2a). Intrusion of foreign matter from the side of the sliding guide device (1) between the guide surface (2a) and the sliding surface (3a) is prevented by the outer wall (41) of the side skirt (4). .

  The lubricating oil pushed outward in the left-right direction of the sliding surface (3a) is guided by the drooping wall portion (5) and flows down into the lubricating oil storage recess (44). As the lubricating oil accumulates in the lubricating oil storage recess (44), the lubricating oil level exceeds the tip of the drooping wall (5) and the inlet (45a) of the lubricating oil discharge channel (45). ) Is the same height. Furthermore, the lubricating oil exceeding the height of the inlet (45a) flows into the inlet (45a) of the lubricating oil discharge passage (45) and is discharged from the outlet (45b). The lubricating oil discharged from the lubricating oil discharge passage (45) is collected in the lubricating oil collection tank.

  In this way, the lubricating oil is pushed away outward in the left-right direction of the guide surface (2a) each time the moving body (3) reciprocates in the front-rear direction, but a certain amount of oil is accumulated in the lubricating oil storage recess (44). At the same time, it is discharged from the lubricating oil discharge passage (45). Even if foreign matter enters through the gap between the inner side wall (43) of the side skirt (4) and the side surface (2b) of the base (2), the lubricating oil remains in the lubricating oil storage recess (44). The lubricant prevents foreign matter from entering between the sliding surface (3a) and the guide surface (2a). Accordingly, it is possible to prevent foreign substances from entering not only from the side of the sliding guide device (1) but also from below the side skirt (4).

  As another embodiment, a concave groove extending in the front-rear direction is formed in the lower stage of the inner wall (43) of the side skirt portion (4), and an inflow path of the lubricating oil discharge path (45) is formed in the concave groove. May be.

(1) Slip guide device
(2) Base
(2a) Guide surface
(2b) Side view
(3) Mobile object
(3a) Sliding surface
(4) Side skirt
(44) Lubricant reservoir recess
(45) Lubricating oil discharge passage
(46) Emission control means
(5) Hanging wall
(8) Contact seal

Claims (2)

A sliding guide device in which the sliding surface of the moving body is slid on the guide surface of the base through the lubricating oil,
The moving body is formed with a side skirt portion extending downward along the side surface of the base so as to cover the side of the gap between the guide surface and the sliding surface.
The side skirt portion has a lubricating oil storage recess on the ridge that opens upward on the inner surface portion facing the side surface of the base, and a guide surface and a sliding surface on the upper edge of the side surface of the base. A drooping wall section is formed that extends downward and guides the lubricating oil flowing out from the side of the gap to the lubricating oil storage recess and divides the lubricating oil storage recess into two chambers that communicate with each other at the bottom. ,
Between the both end portions of the lubricating oil storage recess in the side skirt portion and the drooping wall portion penetrating the same portion is sealed by a contact seal,
In the side skirt part, a lubricating oil discharge passage for discharging the lubricating oil in the lubricating oil storage recess is formed,
A slip guide device in which the level of the lubricating oil in the lubricating oil storage recess is held at a position above the tip of the hanging wall by the discharge control means. Lubricating oil outlet has an inlet that is opened above the tip of the drooping wall in the lubricating oil reservoir, and an outlet that is opened below the inlet on the surface of the side skirt. The slip guide device according to claim 1, wherein a discharge control means is configured by the overflow hole.

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