JPH0240463B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention forms an air film between a workpiece support stand of a machine tool, etc. and a base that supports it, so that the workpiece can slide without contact and without wear, and can be completely held in place. This relates to an air slide device that is held stationary, and a ventilation device for air supply and intake is provided on the stationary base side without connecting a ventilation hose for air supply and intake to the work supporting table side.

Naturally, in the air slide device as described above, the base is configured to have a required length, and the workpiece support is slid on the base only by the required stroke.

Therefore, it is generally considered to supply air from the workpiece support side, but in that case, a ventilation hose for air supply and intake must be connected to the sliding workpiece support side. There is a drawback that handling of the hose is troublesome.

In other words, the hose must be configured so that it does not get in the way when the workpiece support is slid by becoming tense or hanging down.

The present invention eliminates the above-mentioned drawbacks, and is configured so that air is supplied and vented from the base side, and is further configured to be completely stationary in a fixed position.

Although this configuration solves the above-mentioned problems such as handling of the hose, constantly supplying air to the entire sliding surface of the workpiece support on the base side results in wasted air consumption.

Therefore, the present invention is configured so that air supply and intake are automatically performed in accordance with the sliding position of the workpiece support.

Therefore, handling of the ventilation hose is not a problem, and there is no need to waste air.
It is economical and enables more accurate control.

An embodiment of the present invention will be described in detail below with reference to the drawings.

In the figure, 1 is a base, and 2 is a workpiece support stand. In the illustrated embodiment, the workpiece support 2 is slid by a screw 3.

That is, a screw 3 is supported on support parts 1a at both ends of the base 1 via bearings 4 so as to be parallel to the base 2, and a nut 5 supported on a bracket 2a provided on the workpiece support stand 2 is screwed onto the screw 3. It will be combined.

In the figure, 6 is a motor that rotates the screw 3.

However, it is also possible to fix the ends of the timing belt to both sides of the bracket 2a and stretch it with a timing pulley, so that the workpiece support base 2 can be slid.

In the present invention, an appropriate number of ventilation holes 7, 7a, 7b, and 7c are further provided at intervals such that at least one of them is located in the workpiece supporter 2 when the workpiece supporter 2 is slid.

As shown in the second figure, they are attached to the workpiece support stand 2.
It is sufficient if the interval is narrower than the width W of .

In the case of the embodiments shown in FIG. 1 and FIG.
b and 7c, the workpiece support 2 may be provided in a U-shape surrounding the top and both side surfaces of the base 1, as shown in the third figure, in which case manufacturing becomes easier.

In addition, in the case of the drawing embodiment, the above-mentioned ventilation holes 7, 7
A, 7b, and 7c are ventilated from one end of the base 1.

That is, the ventilation holes 7, 7a, 7 of the base 1
Communication holes 8, 8a, 8b, 8 are provided at the configuration positions of b and 7c.
Partition walls 9, 9a, 9b, 9c are provided, and one end thereof is connected to the ventilation holes 7, 7a, 7b, 7, respectively.
c, and the communication holes 8, 8a, 8b, 8
a ventilation hose or pipe 10 at the other end of c;
10a, 10b, 10c are connected to form the base 1.
Solenoid valves 11, 11a, 11b, 11 lead out to one end and each have a three-way switching function.
It is connected to c.

In addition, the solenoid valves 11, 11a, 11
Hose 12 etc. from an air supply source and an air suction source are communicated with b and 11c, respectively.

Furthermore, in the present invention, the ventilation holes 7, 7a, 7
Proximity sensors 13 are provided in accordance with the points b and 7c.

In the case of the embodiment shown in the drawings, the proximity sensor 13 is buried adjacent to the ventilation holes 7, 7a, 7b, and 7c of the base 1, but as shown by the dashed line in FIG. It may be provided at the second slide position so as not to get in the way.

In the figure, 14 is a lead wire from the proximity sensor 13, which is connected to the adjacent ventilation holes 7, 7a, 7, respectively.
Solenoid valves 11, 11 corresponding to b, 7c
a, 11b, and 11c.

Next, a configuration for completely stopping the workpiece support 2 at a fixed position on the base 1 will be described.

As shown in Figure 3, if an air film is formed between the top surface of the base 1 and the workpiece support 2 due to the supply of compressed air, it will surround the surface of the workpiece support 2 that corresponds to the top surface of the base 1. A lip-shaped sealing material 15 with an open outer side is provided in the opening, so that air can be supplied to the communication hole 8c, and air can also be taken in.

Further, 16 in the figure is a control section.

The present invention having the above configuration uses the proximity sensor 13 to
When the sliding of the workpiece support base 2 is detected, the solenoid valves 11, 11a, 11b, 11c corresponding to any of the ventilation holes 7, 7a, 7b, 7c adjacent to the proximity sensor 13 are opened,
The ventilation holes 7, 7a, where the workpiece support stand 2 is located,
Compressed air is supplied to either 7b or 7c, and air is shut off to the other ventilation holes.

As described above, when the workpiece support 2 supported on the base 1 is slid, the ventilation holes 7, 7a, 7b, 7c provided in the base 1 at appropriate intervals are provided.
Of these, compressed air is supplied only between the base 1 and the workpiece support 2 from the ventilation hole where the workpiece support 2 is located, and an air film is sequentially formed to allow the workpiece to slide without contact or wear. It is possible,
Compressed air is not supplied from the other ventilation holes 7, 7a, 7b, and 7c, so that air is not wasted.

It should be noted that when the ventilation holes 7, 7a, 7b, and 7c are ventilated, the sealing material 15 is automatically deformed to a state where it is separated from the base 1 by the action of the supplied compressed air.

Next, when we talk about the case where the workpiece support stand 2 is completely stopped at a fixed position, the solenoid valve 1
1c or 11, 11a, and 11b to stop the supply of compressed air to the communication hole 8c and the ventilation hole 7c located on the lower surface of the workpiece support 2, and
Conversely, when air is sucked, the sealing material 15 comes into close contact with the base 1, creating a vacuum between the base 1 and the workpiece support 2 surrounded by the sealant 15, and bringing the workpiece support 2 into close contact with the base 1, resulting in a completely stationary state. It is something that can be maintained.

Holding the workpiece support 2 in close contact is extremely effective when the workpiece support 2 is slid by a timing belt, a linear motor, or the like.

As mentioned above, the present invention ventilates or takes in air from the base side as the workpiece support slides, and there is no need to connect the ventilation hose to the moving workpiece supporter, making it difficult to handle the ventilation hose. It does not require any effort, and when the workpiece supporter is slid, ventilation is performed only at the slide position of the workpiece supporter, so air is not wasted and the workpiece supporter 2 is completely placed in the fixed position of the base 1. This provides the effect of being able to stand still.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a perspective view of the main part, FIG. 2 is a vertical sectional view of the main part, and FIG.
The figure shows another embodiment, and is a longitudinal cross-sectional view of the main parts in a direction different from that of FIG. 2. 1... Base, 2... Work support stand, 7, 7
a, 7b, 7c...Vent hole, 8, 8a, 8b, 8
c...Communication hole, 10, 10a, 10b, 10c...
...Pipe, 11, 11a, 11b, 11c... Solenoid valve, 13... Proximity sensor.

Claims (1)

[Claims] 1 Consists of a workpiece support and a base on which the workpiece support slides, and the base is provided with an appropriate number of ventilation holes at intervals such that at least one is located in the workpiece support when the workpiece support is slid. A lip-shaped sealing material with an open outer side is provided on the lower surface of the workpiece support base so as to surround the corresponding surface with the base, and a proximity sensor that detects the slide position of the workpiece supporter is provided in line with the above-mentioned ventilation hole. 1. An air slide system, characterized in that the air slide system is configured to vent to or take in air from a vent hole located at a slide position of a workpiece support base based on detection by a proximity sensor.