JP2000005969A - Method and device for preventing scattering of chip, for cutting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and device for preventing scattering of chips, for a cutting tool, so that the chips do not scatter and that cutting fluid does not splash nor fume. SOLUTION: In a method for cutting a workpiece by pressing a rotating part having a cutting bite against the workpiece, the surface of contact between the rotating part and the workpiece is covered with a cover. Air is blown into the cover and chips diffused are sucked by means of the air. In a cutting device, a cover body 4 formed into a freely expanding and contracting cylindrical body is provided to cover the surface of contact surface between the rotating part 2 and the workpiece 3. Further, the cover body 4 formed into the freely expanding and contracting cylindrical body is provided to cover the surface of contact between the rotating part 2 and the workpiece 3 and the cover body 4 is provided with a suction passage 6 for sucking cutting chips 5 while the rotating part 2 is provided with an air feed passage 7 for feeding compressed air into the cover body 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preventing chips generated by using a cutting tool from scattering around and an apparatus for preventing the chips from scattering.

[0002]

2. Description of the Related Art Generally, in a drilling machine or a milling machine, a rotating cutting tool 1 is applied to a workpiece 3 as shown in FIG. 2 to perform a cutting operation. Chips 12 are generated in large quantities.

Normally, the chips 12 are dropped on the floor as they are, or fall into the chip box 10 placed below. In any case, the chips 12 are scattered around the cutting device 11. Inevitable.

At the time of cutting, a cutting oil or the like is used in some cases, but it may drift around as smoke 13 due to heat generated in the cut portion.

[0005]

The chips scattered in this manner may interfere with the cutting operation or hinder the inspection and maintenance of the cutting device. Therefore, it is necessary to periodically collect and reuse the chips. is there. For this reason, the number of collection operations other than the original operation increases, and the productivity does not improve.

[0006] In addition, the scattering and fumes of the cutting oil cause deterioration of the working environment, so that improvement is required.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and is intended to prevent chips from being scattered, and also to prevent chips and fumes from being emitted from a cutting oil for a cutting tool. An object of the present invention is to provide a prevention method and a device used for the prevention method.

[0008]

The present invention employs the following method to solve the above technical problems. That is, in the method of performing a cutting by applying a rotating part having a cutting tool to a workpiece, while covering so as to cover a contact surface between the rotating part and the workpiece, while blowing air into the cover, the air is used. The scattered chips were sucked.

Further, as an apparatus used in this method, an apparatus for performing cutting by applying a rotating part 2 having a cutting bite 1 to a workpiece 3 so that a contact surface between the rotating part 2 and the workpiece 3 is covered. The cover body 4 formed in a telescopic tubular body was provided.

The cover 4 can be formed by vacuum molding a transparent flexible synthetic resin sheet.
It is desirable to form a bellows to provide elasticity. Further, an annular portion for reinforcement can be provided on the sliding contact surface with the rotating portion 2. Further, it is also possible to divide the cover body 4 into two short cylindrical bodies, form a spline on the two, and fit them so that the entire length can be expanded and contracted.

The above-mentioned cover body 4 is further provided with chips 5.
A suction passage 6 for sucking air is provided, and an air supply passage 7 for supplying compressed air into the cover body 4 can be provided in the rotating unit 2.

The suction passage 6 is preferably provided at a position which becomes the bottom of the cover 4 with the cover 4 attached to a predetermined position, and is used by connecting a suction device. The air supply path 7 has a distal end opened in the cover body 4, and an air compressor is connected to a proximal end. If the tip opening is formed at a position where compressed air is blown onto the cutting tool 1, an air cooling effect can be expected.

By adopting such a method and configuration, the air in the cover 4 can be rapidly and powerfully ventilated.
Chips and smoke are forcibly discharged.

In the above configuration, the cutting is performed by rotating the cutting tool side to fix the object to be cut. However, naturally, the cutting is performed by fixing the cutting tool side and rotating the object to be cut. Of course, it can be implemented in exactly the same way.

Further, it is not always necessary to provide both the suction device and the air compressor, and a similar ventilation effect can be expected in either one.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method and an apparatus for preventing chips from scattering for a cutting tool according to the present invention will be described in more detail with reference to the embodiment shown in FIG. The method will be described together with the description of the apparatus. This device is applied to a device similar to the milling machine shown in FIG. 2, and a cutting tool 1 is attached to a rotating unit 2 connected to a motor (not shown) via a rotary joint and a spindle (neither is shown). ing. The rotating unit 2 has a function of a holder that holds the cutting tool 1 in a replaceable manner, and rotates while moving in the horizontal direction.

Then, cutting is performed by applying the cutting tool 1 to the workpiece 3 fixed to a chuck (not shown). In the figure, a boring process for expanding the diameter of a hole formed in the workpiece 3 is shown.

A cover body 4 formed of a telescopic tubular body is provided so as to cover the cut portion. The cover body 4 is formed in a cylindrical shape as a whole, one end of which is in contact with the front surface 3 a of the workpiece 3, and the other end is formed in a circular window slightly larger than the diameter of the rotating part 2. It is supported by two non-rotating parts.

The cover body 4 is formed by vacuum-molding a transparent flexible synthetic resin sheet, and a bellows 4a is formed on its body. The bellows are provided to prevent the cover body 4 from contracting smoothly even during the horizontal movement of the rotating part 2 so that the airtightness is not impaired.

The above-mentioned cover body 4 is further provided with chips 5.
Is provided, and a suction device (not shown) is connected. This suction device is provided with a filter for collecting the chips 5, and is configured to facilitate the collection of the chips.

On the other hand, an air supply path 7 for supplying compressed air into the cover body 4 is formed inside the rotating section 2. An air compressor (not shown) is connected to the base end of the air supply path 7, and a distal end opening is formed toward the cutting tool 1, and compressed air is supplied to the cutting tool 1 in the direction of arrow F. It is configured to cool by spraying it. Furthermore, by forming the tip opening portion in a slightly spiral shape, a whirl (swirl) can be generated in the cover body 4 and the effect of discharging the chips 5 can be enhanced.

The air compressor and the air supply path 7
And an oil mist adding device can be interposed therebetween. The oil mist applying device makes the oil mist, and is expected to have the effect of reducing the friction between the cutting tool 1 and the workpiece 3 and the cooling effect.

The air volume of the suction device is set to exceed the air volume of the air compressor, and the inside of the cover 4 is always kept at a negative pressure. Thereby, the cover body 4
Is adsorbed to the front surface 3a to enhance the sealing of the cover body 4.

In the above configuration, when used, cutting is started in a state where the suction device and the air compressor are operated. Chips 5 generated by the cutting are sucked into a suction passage 6.
And collected in the suction device. With such a configuration, the air in the cover body 4 can be rapidly and powerfully ventilated, and chips and smoke are not discharged to the surroundings.

[0025]

According to the present invention, since the cover body formed in the expandable and contractible cylindrical body is provided so as to cover the contact surface between the rotating part and the workpiece, chips are not scattered. .

Further, in the case where a suction passage for sucking chips is provided in the cover body, and an air supply path provided in the rotating portion for supplying compressed air to the cover body is provided, the chips are automatically removed. It can be collected in a timely manner. Moreover, the working environment can be kept clean since the cutting oil and its smoke can also be sucked.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a method and an apparatus for preventing chip scattering for a cutting tool according to an embodiment of the present invention.

FIG. 2 is a side view showing the periphery of a conventional cutting tool.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cutting bite 2 Rotating part 3 Workpiece 4 Cover body 5 Chip 6 Suction passage 7 Air supply passage

Claims (3)

[Claims] 1. A method for performing cutting by applying a rotating part having a cutting tool to a workpiece, wherein the cover covers a contact surface between the rotating part and the workpiece, and air is blown into the cover. A chip scattering prevention method for a cutting tool, wherein the chip diffused by the air is sucked. 2. A device for performing cutting by applying a rotating part having a cutting tool to a workpiece to be cut, wherein a cover body formed in a telescopic tubular body so as to cover a contact surface between the rotating part and the workpiece. A chip scattering prevention device for a cutting tool, comprising: 3. An apparatus for performing cutting by applying a rotating part having a cutting bit to a workpiece to be cut, wherein a cover body formed in a stretchable tubular body so as to cover a contact surface between the rotating part and the workpiece. Wherein a suction path for sucking chips is provided in the cover body, and an air supply path for supplying compressed air into the cover body is provided in the rotating portion. Shatter prevention device.