JP4499238B2 - Air-cooled / cleaned machine tools - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a machine tool in which a machine body is forced to be air-cooled and processing waste of a workpiece or oil mist that has cooled the workpiece and the workpiece is discharged as needed to clean a processing unit.
[0002]
[Prior art]
Conventionally, protecting the machine tool from the outside, preventing the processing waste processed in the processing part and coolant (including oil mist) to cool the workpiece from jumping out of the machine, A cover covering the machine tool was used to protect the worker. In particular, when the machine tool is small, a cover for sealing the machine tool is used.
[0003]
Although this sealed cover fits the purpose of use of the cover described above, it becomes difficult to release the heat generated during machine tool operation to the atmosphere, and heat accumulates in the cover, raising the temperature of the machine tool. There was a problem of letting it go. On the other hand, machining scraps from the work piece generated in the processing part of the machine tool accumulates in the processing part, falls below the cover, accumulates used coolant, or accumulates under the processing part or the cover, Often there was also the problem that the covers had to be opened and removed.
[0004]
[Problems to be solved by the invention]
Accordingly, an object of the present invention is to air-cool the machine body in a sealed cover to prevent the temperature of the machine body from rising, and to automatically process workpiece waste and used oil mist generated by machining. An object of the present invention is to provide an air-cooled / cleaned machine tool that can be removed from the machine.
[0005]
[Means for Solving the Problems]
In order to solve this problem, an air-cooled / cleaned-type machine tool according to the present invention includes a machine body portion and a processing portion, and a machine tool installed in a sealing cover. A partition plate is provided in the boundary region, and the sealing cover is divided into a machine main body side cover portion that defines a machine main body side chamber and a processing portion side cover portion that defines a processing portion side chamber therein, and the machine body An air passage that communicates the part side chamber and the processing part side chamber is provided, an air inlet is formed on the end wall opposite to the partition plate of the machine body part side cover part , and a suction device is connected to the processing part side chamber. Configure.
[0006]
Based on this configuration, the operation of the suction device, the air introduced from the air inlet to the machine body side chamber, after cooling the machine body portion, and further flows into the working side chamber through the air passage, It is discharged out of the machine along with the processing waste of the workpiece formed in the processing section .
[0008]
The suction device preferably includes an exhaust pipe led out from the processing portion side chamber and a vacuum exhaust device connected to the exhaust pipe.
[0009]
The air passage is preferably formed by a gap between the outer peripheral surface of the partition plate and the inner wall of the sealing cover.
[0010]
It is desirable that the air in the processing unit side chamber is discharged from the lower end of the processing unit side chamber by a suction device.
[0011]
The machine tool of the present invention has an oil mist injection nozzle that injects oil mist onto a workpiece in a processing section, and cools the workpiece and discharges the used oil mist together with air from the processing section chamber. It is also desirable.
[0012]
It is also desirable to form the sealing cover so that the side of the working part can be released.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an air-cooled / cleaned machine tool of the present invention will be described based on embodiments with reference to the drawings. Although the present invention can be applied to various machine tools, the description here will be made on a spindle moving drum index type multi-axis automatic lathe.
[0014]
As shown in FIG. 1, a spindle moving drum indexing type multi-axis automatic lathe (hereinafter simply referred to as “automatic lathe” for the sake of simplicity) 1 includes a machine body portion 2 on the left side and a machining portion 3 on the right side. And is installed in the sealing cover 4.
[0015]
Referring to FIGS. 1 and 2, a machine main body 2 is inserted into a column 5 and a spindle indexing drum 6 (FIG. 1) that indexes the rotation of the spindle centered around its own axis when indexing the spindle position described below. 2) and a spindle moving mechanism 29. A plurality of spindles 7 are equally arranged in the spindle indexing drum 6 in the circumferential direction, and inserted into the spindle indexing drum 6 so that a predetermined amount is fed while rotating the rod-like workpiece 8 held by the collet chuck. is doing.
[0016]
The same number of tool rests 9 are arranged in the circumferential direction corresponding to the main shaft 7 on the front surface of the column 5 (right end surface in FIG. 1) (FIG. 2). Each tool post 9 can move in a tangential direction and a circumferential direction with respect to the circumferential direction, and a desired cutting edge of a tool (for example, a tool 10, a milling tool 11, a drill 12, etc.) fixed to each tool post 9. Can be moved to the machining position or retracted from here.
[0017]
An oil mist pipe 13 extends from the front surface of the column 5, and an oil mist 15 is sprayed onto the workpiece 8 from an oil mist spray nozzle 14 provided at the tip thereof.
[0018]
A partition plate 17 is provided in a boundary region 16 between the machine body 2 and the processing unit 3 in a state of being fixed to the front surface of the column 5. The partition plate 17 divides the inside of the sealing cover 4 into a machine main body side chamber 18 in which the machine main body 2 is accommodated and a processing part side chamber 19 in which the machining part 3 is accommodated. A gap 20 is formed between the outer peripheral edge 17a of the partition plate 17 and the inner peripheral surface 4a of the sealing cover 4 so that the machine main body side chamber 18 and the processing part side chamber 19 communicate with each other. .
[0019]
The sealing cover 4 covers the machine main body 2 and has a machine main body side cover 21 that substantially becomes the machine main body side chamber 18 and a machining part side cover that substantially becomes the machining part side chamber 19. 22. An air inlet 24 is formed on the lower side of the end wall 23 opposite to the partition plate 17 of the machine main body side cover portion 21. The processing portion side cover portion 22 is hinged at the upper end portion or the rear end portion, and can be released at any time to access the internal automatic lathe 1 (machine tool), in particular, the processing portion 3.
[0020]
A hole 25 is formed at the lower edge of the partition plate 17 so as to open to the bottom of the processing portion side chamber 19. A front end of an exhaust pipe 26 (see FIG. 1 is connected to the right end). The rear end (left end in FIG. 1) of the exhaust pipe 26 is connected to the vacuum exhaust device 27 via a hose, for example. Processing waste (chip) and oil mist from the workpiece 8 sucked into the exhaust pipe 26 from the hole 25 to the vacuum exhaust device 27 can be removed by conventional means. Here, the means, the exhaust pipe 26 and the vacuum exhaust device 27 constitute a suction device.
[0021]
Next, air cooling of the machine main body 2 of the automatic lathe 1 and automatic removal of processing waste (chip) and used oil mist of the workpiece 8 will be described.
[0022]
When the automatic lathe 1 is operated, the workpiece 8 is machined by the cutting tool such as the cutting tool 10, the milling tool 11, and the drill 12, and accordingly, the machining waste (chip) 28 and the used oil mist 15 are generated. If no special measures are taken in this state, the temperature in the sealing cover 4 rises due to the heat generated from the automatic lathe 1, and the processing waste 28 and the oil mist 15 accumulate on the bottom of the processing unit 3 and the processing unit side chamber 19. End up.
[0023]
However, when the vacuum exhaust device 27 is operated during the operation of the automatic lathe 1, air outside the sealing cover 4 is sucked into the machine main body side chamber 18 from the air introduction port 24, in which arrows A, B, C, It spreads like D and flows toward the processing portion side chamber 19. As a result, the heat generated from the machine main body 2 is taken away by the air, so that the temperature does not rise for a long time although the machine main body 2 is in the sealing cover 4.
[0024]
On the other hand, the air that has cooled the machine main body portion 7 flows into the processing portion side chamber 19 through the gap 20 and is drawn downward along with the processing waste 28 and the used oil mist 15 generated therein. As indicated by E, the air is sucked through the exhaust pipe 26 toward the vacuum exhaust device 27. Therefore, the processing waste 28 and the used oil mist 15 are automatically discharged from the processing unit 3 and the processing unit side chamber 19. Thus, the processing unit 3 and the processing unit side chamber 19 are kept clean, and the man-hours required to remove the processing unit side cover portion 22 which has been necessary in the past are often removed. Omitted. In addition to the cooling action by the oil mist 15, the heat generated in the processing unit 3 by processing is also absorbed by the air flowing in the processing unit side chamber 19 to additionally prevent the processing unit 3 from rising in temperature.
[0025]
Since the partition plate 17 is provided in the boundary region 16 between the machine main body 2 and the processing section 3, the processing waste 28 and the used oil mist 15 do not enter the machine main body 2 from the processing section 3. The cleaning of the part 2 is also maintained.
[0026]
【The invention's effect】
According to the present invention, the machine tool can be operated without increasing the temperature for a long time, improving the operating characteristics of the machine tool, and automatically removing machining waste (chip) and used oil mist of the workpiece. There is an effect that the machine tool can be cleaned without taking much time.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an embodiment of a machine tool according to the present invention.
FIG. 2 is a cross-sectional view taken along the line AA of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 (Spindle moving drum index type) Multi-spindle automatic lathe 2 Machine body part 3 Processing part 4 Sealing cover 4a Inner peripheral surface 5 Column 7 Spindle 8 Workpiece 10 Bit 11 Milling tool 12 Drill 14 Oil mist injection nozzle 15 Oil mist 16 Boundary region 17 Partition plate 17a Outer peripheral edge 18 Machine main body side chamber 19 Processing part side chamber 20 Clearance 21 Machine main part side cover part 22 Processing part side cover part 23 End wall 24 Air inlet 26 Exhaust pipe 27 Vacuum Exhaust device 28 Processing waste

Claims (6)

In a machine tool having a machine main body and a processing part and installed in a sealed cover, a partition plate is provided in a boundary region between the machine main body and the processed part, and the sealing cover is provided inside the machine main body side chamber. A machine body side cover portion that defines a machining portion and a machining portion side cover portion that defines a machining portion side chamber therein, and an air passage that communicates the machine body portion side chamber and the machining portion side chamber is provided. the air inlet formed in the partition plate and opposite end wall of the machine main unit-side cover portion, by forming isosamples and connected to a suction device to the processing unit side chamber, by the operation of the suction device, The air introduced from the air introduction port into the machine body side chamber is cooled by the machine body portion, and then flows into the processing portion side chamber through the air passage and is formed in the processing portion. It is discharged out of the machine along with the work waste of the work piece. Air-cooled cleaning machine tool, characterized in that it is configured to.  2. The air-cooled / cleaned machine tool according to claim 1, wherein the suction device includes an exhaust pipe led out from the processing unit side chamber and a vacuum exhaust device connected thereto.  3. The air-cooled / cleaned machine tool according to claim 1, wherein the air passage is a gap between an outer peripheral surface of the partition plate and an inner wall of the sealing cover.  The air-cooled / cleaned machine tool according to any one of claims 1 to 3, wherein the air in the processing unit side chamber is discharged from the lower end of the processing unit side chamber by the suction device. .  The machine tool has an oil mist injection nozzle that injects oil mist onto a workpiece in the processing section, and discharges the oil mist that has cooled the workpiece together with air from the processing section side chamber. The air-cooled / cleaned machine tool according to any one of claims 1 to 4.  The air-cooled / cleaned machine tool according to any one of claims 1 to 5, wherein the sealing cover is releasable on the processing part side.

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