JP2653966B2 - Machine Tools - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machine tool for processing a work while spraying a coolant on the work.

[0002]

2. Description of the Related Art Conventionally, when a workpiece is machined by a machine tool, the workpiece is held by a jig mounted on a rotatable table, and various kinds of tools are sprayed onto the workpiece while spraying a coolant which serves as both cooling and cutting oil. Processing with.

[0003]

However, in a conventional machine tool, when the above-mentioned work is completed and the work is taken out of the jig, it takes time to remove the coolant attached to the work, or the removal work is difficult. Man-hours increase.
In addition, the coolant and chips are taken out of the machine tool while adhering to the workpiece, thereby contaminating the surroundings and increasing the consumption of coolant. Japanese Patent Application Laid-Open No. 4-193451 discloses a technique for preventing coolant from splashing around during processing of a work, but this technique cannot solve the above-mentioned problem that occurs after the work is processed.

[0004] It is an object of the present invention to provide a machine tool in which it takes a long time to remove the coolant and prevents the coolant and chips from adhering to the work and being taken out.

[0005]

Means for Solving the Problems] To achieve the above object, a machine tool according to claim 1, and the jig attached to the rotatable table, the supply port is fixed to the jig, holding the jig A coolant supply means for spraying the coolant on the worked work; and an air blowing means having a supply port fixed to the jig, for spraying air to the work after spraying the coolant to remove the coolant.

Further, in the machine tool according to the first aspect , the coolant supply means is fixed to the jig side and is located concentrically with the center of rotation of the jig, and the first coolant supply pipe is provided with the first coolant supply pipe.
A second coolant supply pipe connected to the coolant supply pipe by a connecting member so as to be relatively rotatable, and the air blowing means is fixed to the jig side and positioned concentrically with the rotation center of the jig. A first air supply pipe; and a second air supply pipe connected to the first air supply pipe by a connecting member so as to be relatively rotatable. The first air supply pipe has a smaller diameter than the first coolant supply pipe and the first air supply pipe. One concentrically penetrates the inside of the portion of the other having a large diameter and connected by the connecting member.

According to a second aspect of the present invention, in the machine tool of the first aspect, the air blowing means is provided with a cleaning air nozzle for blowing air toward a hole of the workpiece machined in the previous step.

[0008]

According to the machine tool of the first aspect, when processing a work, the work is held by a jig mounted on a rotatable table, and a supply port for the jig is provided in the work.
Processing is performed with various tools while spraying coolant from the fixed coolant supply means . Then, when the processing of the work is completed, air is blown to the work from an air blowing means having a supply port fixed to the jig, so that coolant and chips attached to the work are removed. .

Further, according to the machine tool of the first aspect, the first coolant supply pipe and the second coolant supply pipe on the jig side constituting the coolant supply means relatively rotate via the connecting member, Further, the first air supply pipe and the second air supply pipe on the jig side constituting the air blowing means relatively rotate via the connecting member.

Accordingly, the first upper SL, and a second coolant supply pipe and the first, rather than that the second air supply pipe to inhibit rotation of the jig-side, these coolant supply pipe and the air supply pipe, the coolant And air can be smoothly supplied to the work side.

Furthermore, in the second aspect, since the blown air toward a hole machined in the workpiece in the preceding process from the cleaning air nozzles, it is possible to clean the hole of the workpiece. As the cleaning air, the same air as that used for the air blowing means can be used, so that the air supply system does not become complicated .

[0012]

An embodiment of the present invention will be described below with reference to the drawings. In the machine tool shown in FIG. 3, a tool turret T and a table 1 are mounted on a base B, and a jig 2 is mounted on the table 1. The table 1 is driven to rotate by a driving device (not shown). The jig 2 holds a work W such as a cylinder block of an engine, and the work W rotates together with the jig 2 by the rotation of the table 1. Due to this rotation, different surfaces to be processed are directed toward the tool turret T, and are sequentially processed by various tools held on the tool turret T.

As shown in FIG. 1, the jig 2 has a frame 21 having an open front surface, and a plurality of chuck fittings 22 for holding the work W, a work W A plurality of receiving tools 23 for receiving the workpiece, a plurality of knock pins 24 for positioning the workpiece W, and the like are provided.
Further, the frame body 21 has a coolant supply means 3 for spraying a coolant around the outer periphery of the work W held by the chuck fitting 22 and the receiving tool 23, and a coolant for blowing the coolant to the work W after spraying the coolant. And an air blowing means 4 for removing air. sand
In other words, the frame 21 of the jig 2
The tip of the first coolant supply pipe 31 serving as a supply port is
Air blowing nozzle 47 serving as a supply port of
The sweeping air nozzle is fixed.

More specifically, as is apparent from FIG. 2, the coolant supply means 3 is positioned concentrically with the rotation center line 20 of the jig 2 and provided on the upper wall 21a of the frame 21 thereof. A first coolant supply pipe 31 fixed upward and a second coolant supply pipe 31 connected to an upper side of the first coolant supply pipe 31 via a first connection member 32 having a sealing function and a bearing function. A coolant supply pipe 33 is provided. A connection fitting 34 extending radially outward is screwed into an upper side of the second coolant supply pipe 33, and a coolant supply pipe 35 is connected to the connection fitting 34.

The air blowing means 4 is fixed to the first coolant supply pipe 31, that is, is fixed to the jig 2 side, and the rotation center line 20 is fixed inside the second coolant supply pipe 33. A first air supply pipe 41 concentrically positioned with the first air supply pipe 41 and a second air supply pipe 42 connected to the upper side of the first air supply pipe 41 so as to be relatively rotatable. Is connected to an air supply pipe 43 extending from a high-pressure air source such as a compressor.

Further, the first air supply pipe 41 includes a cylindrical pipe 41a extending vertically in the second coolant supply pipe 33, a vent pipe 41b screwed to a lower end of the cylindrical pipe 41a, The connection pipe 41c is screwed to the vent pipe 41c, fixed to the first coolant supply pipe 31 in a liquid-tight manner, and protrudes radially outward.

The upper end of the cylindrical pipe 41a is rotatably fitted into the second coolant supply pipe 33 and protrudes upward. A seal member 49 for preventing liquid leakage is provided between the two. It is interposed. A connection fitting 44 is screwed to the upper end of the cylindrical tube 41a.
4 is connected to the second air supply pipe 42 via a second connection member 45 having a bearing function attached to the tip of the air supply pipe 42 so as to be relatively rotatable. That is, the second air
The supply pipe 42 is connected to the first air supply pipe 41 by the second connection member 45.
Are connected so as to be relatively rotatable. In addition, the first
Small diameter of the coolant supply pipe 31 and the first air supply pipe 41
The first air supply pipe 41 is a large-diameter first coolant.
Part of the feed pipe 31 connected by the first connection member 32
Concentrically penetrates the inside of the minute.

In addition to connecting the air delivery pipe 46 to the connection pipe 41c, as shown in FIG. 1, the work W is provided at a plurality of locations around the work W inside the frame 21 of the jig 2, for example. The air blowing nozzles 47 are arranged at four places around the outside of the vehicle, and these nozzles 47 are connected to the air delivery pipe 46. Further, a plurality of cleaning air nozzles 48 are disposed inside the frame body 21 so as to face the holes machined in the previous step in the work W, and these cleaning air nozzles 48 are connected to the air delivery pipe 46. Connect to

Next, the operation of the above configuration will be described.
First, when the work W is held on the frame 21 of the jig 2 and machining such as cutting and drilling is performed with various tools, the inside of the first and second coolant supply pipes 31 and 33 from the coolant supply pipe 35 is removed. After that, the coolant C is supplied into the frame body 21, and the coolant C is sprayed on the work W. Thereby, an excessive rise in temperature of the work W is prevented.

When the work W is finished and the work W is taken out of the jig 2, the high-pressure air A flows through the air supply pipe 43, the first and second air supply pipes 41 and 42,
Work W through the air delivery pipe 46 and each nozzle 47
The coolant and the swarf that are sprayed on the entire outer periphery of the workpiece W and adhered to the workpiece W are removed. It is preferable that the supply of the high-pressure air A be started after the supply of the coolant C is stopped after the processing of the work W is completed. However, the supply of the high-pressure air A may be started while the coolant C is being sprayed on the work W. In this case, this air blowing is continued until after the coolant supply is stopped.

When the processing of one surface of the work W is completed during the processing as described above, the jig 2 holding the work W is rotated together with the table 1, and the other surface of the work W is processed. The first coolant supply pipe 31 is also rotated following the rotation of the jig 2. At this time, as shown in FIG. 2, the first and second coolant supply pipes 31 and 33 are provided.
Is located on the rotation center line 20 of the jig 2, and the second coolant supply pipe 33 is rotatably connected to the first coolant supply pipe 31 via the first connection member 32. The first coolant supply pipe 31 is a second non-rotating pipe.
It rotates relative to the coolant supply pipe 33.

Further, since the first air supply pipe 41 is fixed to the first coolant supply pipe 31, the first air supply pipe 41 is also rotated following the jig 2. At this time, the first air supply pipe 4
1 is connected to the second air supply pipe 42 via the second connection member 45 so as to be relatively rotatable, so that the second air supply pipe 42 in which the cylinder pipe 41a does not rotate. Rotate relative to. At this time, the cylindrical tube 41a is
It also rotates relative to the coolant supply pipe 33.

Therefore, even if the jig 2 rotates together with the table 1, the second coolant supply pipe 33 and the second air supply pipe 42 do not rotate following the jig 2, respectively. Therefore, the coolant supply pipe 35 is connected to the second
Even if the air supply pipe 43 is connected to the coolant supply pipe 33 and the second air pipe 42, respectively, these pipes 35, 4
The jig 2 is not twisted by the rotation of the jig 2. Further, since the non-rotating second coolant supply pipe 33 is located on the rotation center line 20 of the jig 2, the first air supply pipe 41 is provided in the second coolant supply pipe 33 in a double shape. Thus, the overall configuration can be simplified.

When the work of cutting the work W is completed, air A is blown from each cleaning air nozzle 48 toward the hole processed in the previous process of the work W, so that the hole of the work W is cleaned. Is done. Since the same air A used for the air blowing means 4 can be used as the cleaning air A, there is an advantage that the air supply system is not complicated.

As the air A blown from the air blowing nozzle 47 or the cleaning air nozzle 48 toward the work W, warm air may be used.
The work W can be dried more quickly.

[0026]

As described above, in the machine tool of the present invention, when the work is finished and the work is taken out of the jig, air is blown from the air blowing means to the work and adhered to the work. Coolant and swarf can be removed. Therefore, it is possible to prevent troublesome removal of the coolant and increase in the number of man-hours for removal.
In addition, coolant and chips are not taken out of the machine tool while adhering to the workpiece, and the surrounding area is not stained.
Furthermore, waste of coolant is reduced.

[Brief description of the drawings]

FIG. 1 is a partially omitted perspective view of a machine tool according to an embodiment of the present invention.

FIG. 2 is a vertical sectional front view of the essential part.

FIG. 3 is a front view schematically showing the entire machine tool according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Table, 2 ... Jig, 3 ... Coolant supply means, 4
... air supply means, 20 ... rotation center, 31 ... first coolant supply pipe, 33 ... second coolant supply pipe, 41 ... first air supply pipe, 42 ... second air supply pipe, 48 ... cleaning air nozzle, W: Work.

Continuation of the front page (56) References JP-A 1-166049 (JP, U) JP-A 4-89640 (JP, U) JP-A 64-46148 (JP, U) JP-A 4-128144 (JP , U) Jiko 4-7872 (JP, Y2)

Claims (2)

(57) [Claims] 1. A jig mounted on a rotatable table, a supply port fixed to the jig, coolant supply means for spraying a coolant to a work held by the jig, and a supply port in the jig. A machine tool that is fixed and blows air to the work after spraying the coolant to remove the coolant , wherein the coolant supply means is fixed to the jig side and the
A first coolant supply pipe located concentrically with the rotation center;
The first coolant supply pipe is rotatable relative to the connecting member.
A second coolant supply pipe connected thereto, and the air blowing means is fixed to the jig side, and
A first air supply pipe located concentrically with the center of rotation;
The first air supply pipe is rotatably connected to the air supply pipe by a connection member.
2 air supply pipes, having a small diameter of the first coolant supply pipe and the first air supply pipe.
One is connected by a connecting member on the other, which has a larger diameter.
Machine tool penetrating concentrically through the inside of the cut part . 2. The air blowing means according to claim 1 , wherein
For cleaning by blowing air toward the hole of the machined work
The machine tool according to claim 1, further comprising an air nozzle .