JP2001087977A - Processing method and machine tool system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the mist and chips from splashing to outside the processing region certainly even if the processing point has moved by adding a simple mechanism to an existing machine tool. SOLUTION: A machine tool 1 has a spindle 2 with which the processing position for a work 4 is movable, and a tool 3 is attached to the spindle 2 for processing the work 4, and an air curtain forming device 5 is mounted on the spindle 2 removably for forming an air curtain surrounding a processing point of the tool 3 to the work 4.

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 performing machining such as cutting and grinding, and more particularly, to a machining method having a function of preventing scattering of cutting powder, abrasive dust and mist generated by machining and having a function of sucking and discharging. And machine tool systems.

[0002]

2. Description of the Related Art Machine tools for machining such as cutting and grinding,
A tool such as a drill is attached to the main shaft, the tool is rotated and pressed against the workpiece, and a mist (cutting fluid) is supplied to cut the workpiece. In this cutting process,
Since swarf generated by mist and cutting scatters,
Measures have been taken to prevent this.

For example, Japanese Patent Application Laid-Open No. Hei 6-190679 discloses that when a workpiece is cut while supplying mist in the form of a mist using a drill, a plurality of blowing nozzles are fixedly arranged so as to surround a processing area. Then, air is blown out from these blowing nozzles, and the front and rear of the processing area are surrounded and closed by a space formed by an air curtain. It is described that components are prevented from leaking to the outside. The mist in the form of a mist in the processing area is sucked together with air by the suction nozzle.

[0004]

In a machine tool, the position of a spindle is moved to change a processing position on a workpiece, that is, a processing point on a workpiece is moved. However, in the above machine tool, since the plurality of blowing nozzles are fixedly arranged, it is difficult to change the position of the space formed by the air curtain as the processing point moves.

[0005] For this reason, in the above technique, the air curtain must be formed large so that the entire space where the processing point is likely to move is surrounded by the air curtain. In addition, wasteful energy is required to blow air from the plurality of blowing nozzles, and the arrangement range of the plurality of blowing nozzles must be widened, and the processing machine itself must be large.

However, if the air curtain is formed large, the chips, which are prevented from being scattered by the air curtain, are left on the air curtain to collect on the workpiece, thereby preventing the chips from being discharged during cutting. Hinder. Further, there is a possibility that an air current generated in the air curtain during processing may affect the processing.

[0007] Therefore, the present invention provides a machining method and a machine tool capable of reliably preventing mist and swarf from scattering outside a machining area even when a machining point moves by adding a simple mechanism to an existing machine tool. The purpose is to provide a system.

[0008]

According to the first aspect of the present invention,
In a machining method in which a tool is attached to a main spindle capable of moving a machining position with respect to a workpiece and the tool interferes with the workpiece to perform removal machining, a tool is provided by air curtain forming means detachably provided to the spindle. This is a processing method of performing removal processing while forming an air curtain surrounding a processing point according to.

According to a second aspect of the present invention, in the processing method according to the first aspect, the air curtain forming means has a plurality of air outlets formed on a circumference centered on the main shaft.

According to a third aspect of the present invention, in the processing method according to the second aspect, the air blowing port blows air in an outward direction centering on a processing point.

According to a fourth aspect of the present invention, in the processing method of the first aspect, an air adjusting means for adjusting an amount of air supplied to the air curtain forming means is provided.

According to a fifth aspect of the present invention, there is provided the processing method according to the first aspect, further comprising a mist suction unit disposed in the air curtain generated by the air curtain forming unit and sucking a mist sealed by the air curtain. ing.

According to a sixth aspect of the present invention, in the processing method of the first aspect, a swarf sucking means is disposed within the air curtain generated by the air curtain forming means and sucks swarf sealed by the air curtain. It has.

According to a seventh aspect of the present invention, there is provided a machine tool which mounts a tool on a main spindle capable of moving a machining position with respect to a workpiece and rotates the tool to perform machining on the workpiece. It is provided detachably,
Air curtain forming means for forming an air curtain surrounding a processing point on a workpiece with a tool, and a mist arranged in the air curtain generated by the air curtain forming means and sucking mist sealed by the air curtain together with air. A suction means, a swarf suction means arranged in the air curtain generated by the air curtain forming means, and suctioning the swarf sealed by the air curtain together with air; A dust collector that collects mist and swarf and purifies the air, and an air adjusting unit that compresses and adjusts the air cleaned by the dust collector to adjust the amount of air supplied to the air curtain forming unit. Machine system.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall block diagram of a machine tool system. The machine tool system includes a machine tool 1. FIG. 2 is a configuration diagram of a main part of the machine tool 1. A tool 3 such as a drill is attached to the main shaft 2. The main shaft 2 is rotated by a driving unit (not shown) and is configured to process the workpiece 4 by being pressed against the workpiece 4 by a predetermined pressing force together with the supply of the mist. It is movable in the xyz-axis direction by operation.

An air curtain forming device 5 is mounted on the main shaft 2.
Are provided detachably. The air curtain forming apparatus 5 forms an air curtain so as to surround a processing point of the tool 3 with respect to the workpiece 4. FIG. 3 is a plan view of the main shaft 2 viewed from the axial direction, and FIG. FIG. 3 is a cross-sectional view as viewed from a direction perpendicular to the axial direction of FIG.

The air curtain forming apparatus 5 includes a disk-shaped air blowing main body 7 having a circular hole 6 formed in the center for holding the main shaft 2, and an outer peripheral side of the air blowing main body 7 to the main shaft 2. Clamping frame 8 for clamping, and clamping frame 8
And fixing members 9a and 9b for fixing the air blow-out main body 7 to the main shaft 2 by tightening.

In the air curtain forming apparatus 5, the amount of air supplied by the air adjusting section 43 is adjusted. The air adjusting section 43 has a function of receiving the purified air sent from the dust collector 30, compressing and adjusting the air, and adjusting the amount of air supplied to the air curtain forming device 5. Note that a factory air compressor 44 is connected to the air adjustment unit 43.

A plurality of air outlets, for example, eight air outlets (hereinafter, referred to as air outlet nozzles) 10-1 to 10-8 are provided on the air outlet main body 7 on the circumference around the main shaft 2. Is formed. The air blowing nozzles 10-1 to 10-8 are formed in a conical shape as shown in FIG. 5, and the blowing inclined surface 1 is configured to blow air outward in a direction centered on a processing point (processing center).
1 is attached.

These air blowing nozzles 10-1 to 10-1
-8 communicates with an air relay pipe 12 formed inside the air blowing main body 7. The air relay pipe 12 is formed on the circumference around the main shaft 2 along the position where the air blowing nozzles 10-1 to 10-8 are formed. A plurality of air supply pipes, for example, six air supply pipes 13-1 to 13-6 are connected to the air relay pipe 12. As shown in FIG. 3, the air supply pipes 13-1 to 13-6 are provided at three places on one side, for example, each of the fixing members 9a and 9b.
At an angle of 45 ° with respect to a line L passing through
Each of the air blowing nozzles 10-1 to 10-8 is formed at a position at an angle of 22.5 ° on the left and right of the air supply pipes 13-1 to 13-6.

The air outlet main body 7 is also provided with an air relay pipe 12 in the radial direction.

FIG. 6 is a schematic structural view of the air curtain forming apparatus 5. It should be noted that in FIG.
3-1 to 13-2, air blowing nozzles 10-1 to 10
Only -3 is shown. With such a configuration, the air supplied from the air supply pipes 13-1 to 13-6 flows through the air relay pipes 12 to the respective air blowing nozzles 10-1 to 10-1.
An air curtain is formed so as to be blown out from 0-8 and surround a processing area including a processing point.

In the hole 6 of the air outlet main body 7, a buffer member 14 is provided on a contact surface with the main shaft 2. The circular hole 6 is formed with respective insertion ports 17 and 18 for inserting a mist collector 15 and a swarf collector 16 to be described later.

Each of the holding frames 8 is made of an elastic body such as a spring member, and is formed in a semicircular shape along the outer peripheral wall of the air blowing body 7. The fixing members 9a and 9b provided at the joints of the holding frames 8 are respectively provided with bolts 1
Each holding frame 8 is tightened by the nut 9 and the nut 20.

A mist collector 15 is inserted into the insertion opening 17 of the air blowing main body 7. The mist collector 15 is disposed in an air curtain generated by the air curtain forming device 5 and sucks mist sealed by the air curtain. The suction nozzle of the mist collector 15 is provided with a simple filter so that the cutting chips are not sucked in simultaneously with the suction of the mist. In the vicinity of the processing point, a swarf collector 1
Since 6 is arranged, there is no possibility of sucking chips, but a simple filter is provided for completeness.

The swarf collector 16 includes the air blowing body 7.
Is arranged at the insertion port 18 of the first embodiment. This swarf collector 1
Numeral 6 is disposed in the air curtain generated by the air curtain forming device 5, and its tip is disposed in the vicinity of the processing point and sucks chips that are sealed by the air curtain.

The description returns to FIG. The dust collector 30 generates a suction action, and includes a motor and a suction fan 31 driven by the motor. A bellows-like mist-side filter 32 is connected to the mist-side intake port of the dust collector 30. The exhaust port 33 passes from the mist side filter 32 through the suction fan 31.
Is provided with a ventilation pipe. Mist side filter 32
Collects air sucked by the suction fan 31,
The mist contained in the air is extracted and stored in a tray provided below. This mist side filter 32
Is provided with a mist storage container 34 via a drain pipe.

Further, the intake port on the chip side of the dust collector 30 has
The chip side filter 35 is connected. A ventilation pipe is provided from the chip side filter 35 to the exhaust port 33 through the suction fan 31. The chip side filter 35 collects the air sucked by the suction fan 31 and extracts the chips contained in the air. The chip-side filter 35 is provided with a chip-collecting container 36 via a drain pipe.

FIG. 7 shows another filter structure for mist and chips. The air in the air curtain sucked by the suction fan (not shown) is supplied to the inside of the filter body 38 through the pipe 37. The filter body 38 is provided with a three-stage filter.
The filter 39 for swarf is on the stage, the filter 40 used for the mist collector 15 is on the second stage, and the filter 41 for mist is on the third stage. As the third-stage filter 41, a large-sized filter is used so that the cutting powder does not fall to the lower part. Each of the second-stage and third-stage filters 40 and 41 is provided with a mist storage container 42 via a drain pipe, and the mist extracted by these filters 40 and 41 is collected in the storage container 42. It is supposed to be.

The dust collector 30 is provided with an air discharge port for discharging purified air.

Next, the operation of the system configured as described above will be described.

When a tool 3 such as a drill rotates the main spindle 2 attached to the main spindle 2 to press the tool 3 against the workpiece 4 and supply mist in the form of a mist to perform cutting on the workpiece 4, FIG. First, the main shaft 2 is rotated and the air compressor 44 and the suction fan 31 of the dust collector 30 are driven by the processing machine shown in FIG. By driving the air compressor 44, air is sent to the air adjustment unit 43. The air adjusting section 43 includes an air compressor 44
And controls the amount of air supplied to the air curtain forming apparatus 5 by attenuating or controlling the flow rate of the air.

The air curtain forming apparatus 5 converts the air supplied from the air adjusting section 43 through the respective air supply pipes 13-1 to 13-6 into the respective air blowing nozzles 10-1 to 10-8 through the air relay pipe 12. And blows out from these air blowing nozzles 10-1 to 10-8. Thereby, a space by the air curtain is formed so as to surround a processing area including a processing point of the tool 3. The formation of the space by the air curtain prevents mist and chips from scattering outside the processing region.

Since the air curtain forming device 5 is integrally attached to the main shaft 2, even when the main shaft 2 is moved in processing the workpiece 4, the air curtain forming device 5 moves integrally with the main shaft 2. I do. Accordingly, the space formed by the air curtain is always formed around the processing point, and the mist and the chips are prevented from scattering outside the processing area.

In this state, the mist collector 15 drives the suction fan 31 of the dust collector 30 to suck the mist sealed in the space of the air curtain together with the air.

At the same time, the swarf collector 16 sucks swarf sealed in the space of the air curtain together with air by driving the suction fan 31 of the dust collector 30.

Since the mist collector 15 and the swarf collector 16 are provided in the air blowing body 7,
Even if the main shaft 2 moves, its tip is always arranged in the space formed by the air curtain, and sucks mist and chips.

In the dust collector 30, the air sucked in through the mist collector 15 by the mist side filter 32 is collected, and the mist contained in the air is extracted and stored in a tray provided below. The mist stored in the tray is stored in the mist storage container 34 through the drain pipe.

The dust collector 30 is provided with a chip-side filter 35.
To collect the air sucked through the chip collector 16 and take out the chips contained in the air. The extracted chips are collected in a chip collecting container 36 through a drain pipe.

Then, the dust collector 30 discharges the purified air through the mist side filter 32 and the chip side filter 35.

As described above, in one embodiment,
A tool 3 is mounted on a main spindle 2 that allows a machining position to be movable with respect to a workpiece 4 and performs processing on the workpiece 4.
Since the air curtain forming apparatus 5 for forming an air curtain surrounding the processing point for the workpiece 4 in the above is provided, even if the main shaft 2 moves, a space by the air curtain can always be formed around the processing point, and The curtain prevents scattering of chips and mist. In addition, since the air curtain forming device 5 is detachable with respect to the main spindle 2, it can be easily attached to the existing machine tool 1 with a simple structure, and can be easily attached to an existing machine tool 1, such as a machine tool of another model, such as a grinding machine. The present invention can be applied to the main shaft as long as the shape of the main shaft matches.

Further, since the mist collector 15 and the swarf collector 16 are arranged in the space defined by the air curtain, mist and swarf generated during processing can be efficiently collected.
In this case, the mist collector 15 and the swarf collector 16
Is provided in the air blowing main body 7, so that even if the main shaft 2 moves, mist and chips can be reliably sucked.

Also, air blowing nozzles 10-1 to 10-
Since the blowing direction from 8 is inclined outward from the processing center, it is possible to reduce the influence of the air flow generated by the formation of the air curtain.

The present invention is not limited to the above embodiment, but may be modified as follows.

For example, in the above-described embodiment, a case where the present invention is applied to a cutting or grinding machine tool has been described.
The present invention can also be applied to a polishing apparatus as shown in FIG. In this polishing apparatus, a grindstone 51 is rotated in a main body case 50 by a driving source. A plurality of air blowing nozzles, for example, ten air blowing nozzles 52-1 to 52-10 are formed in a lower portion of the main body case 50. These air blowing nozzles 52-1 to 52-10 are formed in a conical shape, as in the above-described embodiment, and blow air outward in a direction centered on a polishing portion. These air blowing nozzles 52-1 to 52-10
Is connected to a compressor, for example, so that the amount of air blown out is adjusted.

When applied to the polishing apparatus in this manner, shavings and the like generated by the polishing will not be scattered outside the polishing area by the air curtain. And if a shavings collector is arrange | positioned in the space of an air curtain, shavings can be collect | recovered efficiently. Further, since the plurality of air blowing nozzles 52-1 to 52-10 are formed in the main body case 50, the air curtain can always be formed around the polished portion even when the polished portion moves.

[0048]

As described above in detail, according to the present invention, by adding a simple mechanism to an existing machine tool, even if the machining point moves, the mist and chips can be reliably removed from the machining area. A processing method and a machine tool system capable of preventing scattering can be provided.

[Brief description of the drawings]

FIG. 1 is an overall block configuration diagram showing an embodiment of a machine tool system according to the present invention.

FIG. 2 is a configuration diagram of a main part of the machine tool in one embodiment of the machine tool system according to the present invention.

FIG. 3 is a plan view of an air curtain forming device in one embodiment of the machine tool system according to the present invention.

FIG. 4 is a cross-sectional view of an air curtain forming apparatus according to an embodiment of the machine tool system according to the present invention.

FIG. 5 is a configuration diagram of an air blowing nozzle in one embodiment of the machine tool system according to the present invention.

FIG. 6 is a schematic configuration diagram of an air curtain forming device in one embodiment of a machine tool system according to the present invention.

FIG. 7 is a configuration diagram showing another filter structure for mist and chips in one embodiment of the machine tool system according to the present invention.

FIG. 8 is a configuration diagram when a machine tool system according to the present invention is applied to a polishing apparatus.

[Explanation of symbols]

1: machine tool, 2: spindle, 3: tool, 4: workpiece, 5: air curtain forming device, 6: hole, 7: air blowing body, 8: clamping frame, 9a, 9b: fixing member, 10- 1 to 10-8: air blowing port (air blowing nozzle), 11: inclined surface of blowing, 12: air relay pipe, 13-1 to 13-6: air supply pipe, 14: buffer member, 15: mist collector, 16 : Chip collector, 17, 18: insertion port, 30: dust collector, 31: suction fan, 32: mist side filter, 33: exhaust port, 34: mist storage container, 35: chip side filter, 36: cutting A powder collection container 36 is provided. 43: Air adjustment unit.

Claims (7)

[Claims] 1. A processing method in which a tool is attached to a main spindle capable of moving a processing position with respect to a workpiece, and the tool interferes with the workpiece to perform removal processing. A removing process while forming an air curtain surrounding a processing point by the tool by an air curtain forming means. 2. The processing method according to claim 1, wherein said air curtain forming means forms a plurality of air outlets on a circumference centered on said main axis. 3. The processing method according to claim 2, wherein the air blowing port blows air in an outward direction around the processing point. 4. The processing method according to claim 1, further comprising air adjusting means for adjusting an amount of air supplied to said air curtain forming means. 5. The processing method according to claim 1, further comprising a mist suction unit disposed in the air curtain generated by the air curtain forming unit and suctioning a mist sealed by the air curtain. . 6. The apparatus according to claim 1, further comprising: a chip suction means disposed in the air curtain generated by the air curtain forming means, for suctioning chip chips sealed by the air curtain. Processing method. 7. A machine tool which mounts a tool on a spindle capable of moving a machining position with respect to a workpiece and rotates the tool to perform machining on the workpiece, and is provided detachably with respect to the spindle. An air curtain forming means for forming an air curtain surrounding a processing point on the workpiece with the tool; and a mist arranged in the air curtain generated by the air curtain forming means and sealed by the air curtain. Mist suction means for sucking chips together with air, chip dust suction means arranged in the air curtain generated by the air curtain forming means, and sucking chip chips sealed with the air curtain together with air, and mist suction means And purify the air by collecting the mist and the swarf sucked by the swarf suction means. That the dust collector and machine tool systems, wherein a cleaned air compressed, equipped with an air regulating means for regulating the amount of air supplied to the air curtain forming means is adjusted, the this dust collector.