JP2001079705A - Cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve compactness and lightness of a cutting device by rotating a rotary blade installed on a rotary cylinder by torque of a workpiece, to prevent entanglement of chips discharged from a drill with the drill by cutting chips, and to improve working environments by eliminating scattering of chips and oil mist. SOLUTION: This device comprises a tool holding base 18 which moves to/from a main shaft, the drill 11 installed on the tool holding base 18, a slide member 15 and a spring 25 installed on the tool holding base 18, the rotary cylinder 16 installed on a tip of the slide member 15 through a bearing so as to be rotatable around the drill 11, a cutting means comprising a rotary blade installed on the rotary cylinder 16 and a satitc blade installed on the slide member 15, and a chip containing box 17 installed on the slide member 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device, and more particularly to a cutting device for cutting chips while rotating a work.

[0002]

2. Description of the Related Art As a cutting apparatus for cutting chips while rotating a work, there is, for example, a cutting apparatus disclosed in Japanese Patent Application Laid-Open No. 6-170605. According to FIG. 1 of the publication, the chip cutting device includes a nozzle unit 1 for sucking chips, a cutting machine 2 for cutting chips, a storage container 3 for storing chips, and a suction machine 4 for sucking chips. Consists of The cutting machine 2 includes a cutting ring fixed inside the main body 5, a cutter that rotates along the inner surface of the cutting ring, and a motor 9 that rotates the cutter.
And cutting chips generated from the work material A by the cutting tool B.

[0003]

The above-described cutting machine 2 has a main body 5 and a motor 9 mounted on a common base.
Because it is large enough, a large installation space is required.
In addition, cutting oil scatters with cutting, and if this oil can be treated, the working environment can be improved.

Therefore, an object of the present invention is to provide a compact
An object of the present invention is to provide a cutting device capable of obtaining a good working environment.

[0005]

In order to achieve the above object, a first aspect of the present invention is to provide a tool gripper which is disposed opposite to a main shaft for gripping a workpiece and rotating at a cutting speed, and which advances and retreats toward the workpiece. A drill attached to the gripper, a slide member attached to the tool gripper so as to be able to advance and retreat toward the work, and an urging means for urging the slide member toward the work, and a bearing so as to be rotatable around the drill A rotary cylinder which is attached to the tip of a slide member via a shaft and rotates with the rotational force of the work as a drive source when pressed against the work, and cuts chips passing between the inner peripheral surface of the rotary cylinder and the outer peripheral surface of the drill. Cutting means comprising a rotary blade attached to a rotary cylinder and a stationary blade attached to a slide member.

[0006] A slide member is mounted on the tool holder, a rotary cylinder is mounted on the slide member, and a rotary blade is mounted on the rotary cylinder. Since the rotary cylinder is brought into contact with the work by the urging means by moving (feeding) the tool holding table, the rotational force of the work rotates the rotary blade. In addition, a rotary blade is attached to the rotary cylinder, and a stationary blade is attached to the slide member. Since the chips discharged through between the inner peripheral surface of the rotary cylinder and the drill are cut by the rotary blade, the chips are not entangled with the drill and the chips are not scattered from the cutting portion.

According to a second aspect of the present invention, a cup-shaped chip storage box surrounding the drill and having an open surface on the work side is attached to the slide member near the cutting means, and one end of a tube is connected to the chip storage box. Then, a vacuum suction machine is attached to the other end of the tube, and chips in the chip storage box are discharged through the tube. Surround the drill and cutting means with a chip storage box. The chip storage box stores chips cut short by the cutting means, thereby preventing the chips from scattering. In addition, a vacuum suction machine is attached to the chip storage box via a tube. By cutting the chips by the cutting means, the chips can be sucked and collected by a vacuum suction machine. As a result, the worker does not need to touch the chips and the cutting oil.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is a perspective view of a cutting device according to the present invention. A cutting device 10 includes a drill 11 mounted at the center and a collet 1 holding a base of the drill 11.
2, a holder portion 13 fitted with the collet portion 12,
A support means 14 attached to the holder 13, a slide member 15 attached to the holder 13 so as to be able to advance and retreat via the support means 14, a rotary cylinder 16 and a chip storage box 17 attached to the slide member 15. , A tool holding table 18. Reference numerals 19... (... indicate a plurality, the same applies hereinafter) are bolts for attaching the chip storage box 17 to the slide member 15. The configuration of the tool holder 18 will be described later.

The holder 13 is provided with a shank 21 (for example,
JIS B 4003) and the main body 22. The support means 14 includes a support plate 23 fitted to the holder portion 13 and the rod 2 having one end slidably fitted to the support plate 23.
4 and 24, and springs 25 and 25 which are urging means disposed on the outer periphery of the rods 24 and 24 and attached so as to push out the slide member 15.
Reference numeral 26 denotes a bolt for tightening and fixing the support plate 23.

FIG. 2 is a view taken in the direction of arrow 2 in FIG.
3 and a slide member 15 is attached to the support means 14 at a predetermined distance, and the chip storage box 17 is attached to the slide member 15.
Indicates that was attached. The chip storage box 17 includes a storage portion 27 and an outlet 28 formed below the storage portion 27.
And a drill through hole 29 formed in the center.

FIG. 3 is a sectional view taken along line 3-3 of FIG. 1, and shows that the rotary cylinder 16 is mounted on the slide member 15 and the chip storage box 17 is mounted near the cutting means 60.
The drill 11 has an oil hole 31 (oil hole) in the center. The collet portion 12 includes a stopper 33 formed at an end portion, a straight hole 34 formed at the center, and an O-ring mounting groove 3 formed at an inner peripheral surface of the straight hole 34.
5 and the cutting oil passage 36 drilled at the bottom of the straight hole 34
And a stopper 37 formed on the outer peripheral surface.

The main body 22 has a mounting hole 41 formed in the center.
An O-ring mounting groove 42 formed on the inner peripheral surface of the mounting hole 41; and a cutting oil passage 43 formed at the bottom of the mounting hole 41.
And a cutting oil supply port 44 communicating with the cutting oil passage 43.
And a stop hole 45. 46 is a set screw. By screwing the set screw 46 into the stop hole 45, the stop portion 37 of the collet portion 12 is pressed down, and the collet portion 12 is prevented from slipping (stopping and stopping).

The rotary cylinder 16 is attached to the slide member 15 via a bearing 51, and includes a first rotary cylinder 52 and a second rotary cylinder 53. The first rotary cylinder 52 includes a flange 55 formed at an end, an O-ring mounting groove 56 formed at the flange 55, and a first discharge hole 57 drilled at the center. Second rotary cylinder 5
3 comprises a flange 58 formed at the end and a second discharge hole 59 drilled at the center.

The cutting means 60 includes a rotary blade 61 attached to the flange 58 of the second rotary cylinder 53 and the sliding member 1.
5 attached to the stationary blade 62. 64 is an O-ring.

FIG. 4 is a sectional view taken along line 4-4 of FIG. 2, showing the rotary blade 61 and the stationary blade 62, and
And the chip storage box 17 is attached to the support means 14 with four bolts 19.
6 indicates that it was attached.

FIG. 5 is a perspective view of the rotary blade and the stationary blade according to the present invention. The rotary blade 61 includes a mounting portion 71 formed outward, three cutting blades 72 formed inwardly and horizontally from the mounting portion 71, and mounting holes 73 formed in the mounting portion 71.・ ・ Consists of The rotary blade 61 is rotated by the second rotary cylinder 53 in the direction of the arrow.

The stationary blade 62 has a mounting portion 75 formed outward and four elastic portions 76 formed by bending the mounting portion 75 inward and slightly toward the rotary blade 61.
And cutting blades 77 formed on the elastic portions 76. Note that the stationary blade 62 is stationary by being attached to the slide member 15. Reference numerals 78, 79, ... denote mounting bolts.

FIG. 6 is a sectional view taken along line 6-6 of FIG. The support means 14 includes bearings 81, 81 for slidably supporting the rod 24, and retaining rings 82 for stopping these bearings 81, 81. The rod 24 has a stopper 83,
The stopper 83 is fixed at a predetermined position by a bolt 85 via a resin piece 84, and maintains the stroke amount of the rod 24 and adjusts the standby position of the slide member 15. The resin pieces 84 prevent scratches caused by the bolts 85.

A stop portion 91 is formed on the drill 11,
A stop hole 92 is formed in the collet portion 12 and the drill 11 is stopped with a set screw 93, thereby preventing the drill 11 from slipping (stopping rotation and stopping). O-rings 94 and 95 prevent oil mist and compressed air from leaking.

FIG. 7 is an explanatory view of a typical lathe to which the cutting apparatus according to the present invention is attached. A lathe 100 includes a base 101, a headstock 102 provided on the upper left side of the base 101, and a headstock. A spindle 103 provided at 102;
Tailstock 1 placed on the right side of bed 104 of base 101
An NC (numerical control) lathe including a turret 05 (tailstock), a tool rest 106 (turret) placed in the center of the bed 104, and an operation panel 107 (including a separately installed control panel). 108 is an oil mist generator, and 109 is a suction device which is a vacuum suction machine. Z indicates the moving direction (Z axis) of the tool rest 106.

The oil mist generator 108 atomizes cutting oil with compressed air and discharges compressed air together with the atomized cutting oil. The oil mist generator 108 can adjust the particle size and supply amount of oil. is there. The suction device 109 is for suctioning with a general negative pressure, separates chips and cutting oil, collects chips in a chip collection box, and returns cutting oil to the oil mist generator 108. . The tailstock 105 has a center 111.

The cutting device 10 is attached to the tool rest 106 (turret), and one end 113 of the mist supply hose 112 is connected to the cutting device 10 so that the mist supply hose 1
The oil mist generator 108 is attached to the other end 114 of the tube 12 and one end 116 of the tube 115 is attached to the chip storage box 17.
And the suction device 10 is connected to the other end 117 of the tube 115.
9 is attached.

FIG. 8 is an enlarged view of a tool post to which the cutting apparatus according to the present invention is attached, and a tool post 106 (turret).
The cutting device 10 is attached via a holding tool 121 to the cutting oil supply port 44, one end 113 of a mist supply hose 112 for supplying oil mist is connected, and one end of a tube 115 is connected to the discharge port 28 of the chip storage box 17. 116 is connected.

The tool holding table 18 includes a Z-axis table 118 mounted on the bed 104, an X-axis table 119 mounted on the Z-axis table 118, and a tool rest 106 (turret) rotatably provided on the X-axis table 119. ) And a holding tool 121 attached to the tool rest 106 (turret).
And

Next, an example of a cutting procedure will be described. First, after attaching the cutting device 10 as shown in FIG.
The work W is attached to the main shaft 103 via the chuck 122, and predetermined processing conditions such as the number of rotations of the work W and the feed amount of the Z axis are set on the operation panel. The work W is rotated at the cutting speed as shown by the arrow, the tool post 106 (turret) is fed in the Z-axis direction as shown by the arrow, oil mist is supplied by the oil mist generator as shown by the arrow, and suction is performed by the suction device as shown by the arrow. Start and carry out cutting according to the NC program.

The operation of the above-described cutting apparatus will now be described. FIG. 9 is a first operation view of the cutting apparatus according to the present invention. The tool rest 106 is fed in the Z-axis direction as shown by the arrow while the work W is being rotated by the main shaft 103 as shown by the arrow, and the cutting device 10 is brought into contact with the work W. When the rotary cylinder 16 comes into contact with the work W, the spring 25
, The rotational force of the work W is transmitted to the rotary cylinder 16 as shown by the arrow, and the rotary blade 61 rotates with the work W. As a result, since a driving source for the rotary blade 61 is not required, the cutting apparatus 10 can be made compact (miniaturized).

When the oil mist 123 generated in the form of a mist by the oil mist generator is supplied together with the compressed air as shown by an arrow, both the oil mist 123 and the compressed air
Cutting oil supply port 44 → Cutting oil passage 43 → Cutting oil passage 36 →
The oil reaches the tip of the drill 11 in the order of the oil holes 31 (oil holes) of the drill 11.

FIG. 10 shows a second embodiment of the cutting apparatus according to the present invention.
FIG. When the tool post 106 is further fed in the Z-axis direction (the direction of the arrow) (feed amount S), the drill 11
To produce chips. The chips are sent backward by the grooves of the drill 11, pass through the inner peripheral surfaces (the first discharge holes 57 and the second discharge holes 59) of the rotary cylinder 16, and reach the cutting means 60.

The cutting means 60 cuts the chips 124... Into short pieces and discharges them to the chip storage box 17. Specifically, the rotation of the work W is transmitted to the rotary blade 61 as shown by an arrow, and the rotary blade 61 rotates, thereby cutting the chips 124... With the stationary blade 62. Since the chips 124... Are cut short, there is no concern that the chips 124.

The O-ring 64 of the rotary cylinder 16 is attached to the work W.
, And the drill 11 is surrounded by the rotary cylinder 16 and the chip storage box 17, so that the chips 124,.
Even if the oil mist 123 and the cutting chips 125 are blown off, they can be stored without scattering.
As a result, the operator can collect the chips 124 and the oil mist 123 without touching the chips 124 and the oil mist 123. Therefore, the working environment can be improved.

The chips 124 are formed by the rotary blade 61 and the stationary blade 62.
... into short cutting chips 125 ...
Chips can be collected by the suction device. Holder part 1
Since the cutting oil passage 43 is formed in 3 and the cutting oil passage 36 is formed in the collet portion 12, the oil mist 123 and the compressed air are blown directly to the cutting portion of the work W through the oil hole 31 (oil hole) of the drill 11. be able to. As a result, the cutting section can be cooled by the compressed air, and the production efficiency can be improved.

The lathe 100 (NC lathe) of FIG. 7 shown in the embodiment of the present invention is an example, and the lathe 100 may be replaced with a general-purpose lathe. Also, the cutting device 10 is attached to the tool rest 106 (turret).
May be attached to the tailstock 105 (tailstock). The center 111 of the tailstock 105 is removed, the cutting device 10 is fitted, and the handle of the tailstock 105 is manually operated to feed the cutting device 10 in the Z-axis direction.

[0033]

According to the present invention, the following effects are exhibited by the above configuration. In the first aspect, the work is attached to the main shaft, and the rotary cylinder is pressed against the work by the urging means, so that the rotary blade attached to the rotary cylinder can be rotated by the rotational force of the work. As a result, it is possible to reduce the size and weight of the cutting device without the need for a conventional motor. In addition, since the rotary blade is attached to the rotary cylinder and the stationary blade is attached to the slide member, chips discharged from the groove of the drill can be cut, and entanglement with the drill can be prevented. Further, since the rotary cylinder moves along the outer periphery of the drill while contacting the work by sliding of the slide member, chips and oil mist discharged from the groove of the drill do not scatter. As a result, the operator is less likely to touch chips and oil mist, and the working environment can be improved.

According to the second aspect of the present invention, since the cup-shaped chip storage box is attached to the slide member and surrounds the drill and the cutting means, chips and oil mist discharged from the cutting means can be stored without being scattered. it can. Further, since the chips are cut by the cutting means, the chips stored in the chip storage box can be sucked by the vacuum suction machine. The chips can be collected and the oil mist can be collected (circulated) without the operator touching the chips and the oil mist, and the working environment can be further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cutting apparatus according to the present invention.

FIG. 2 is a view taken in the direction of arrow 2 in FIG. 1;

FIG. 3 is a sectional view taken along line 3-3 in FIG. 1;

FIG. 4 is a sectional view taken along line 4-4 of FIG. 2;

FIG. 5 is a perspective view of a rotary blade and a stationary blade according to the present invention.

FIG. 6 is a sectional view taken along line 6-6 in FIG. 2;

FIG. 7 is an explanatory view of a typical lathe to which the cutting device according to the present invention is attached.

FIG. 8 is an enlarged view of a tool post to which the cutting device according to the present invention is attached.

FIG. 9 is a first operation view of the cutting apparatus according to the present invention.

FIG. 10 is a second operational view of the cutting apparatus according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Cutting apparatus, 11 ... Drill, 15 ... Slide member, 16 ... Rotary cylinder, 17 ... Chip storage box, 18 ... Tool holding table, 25 ... Biasing means (spring), 51 ... Bearing, 60 ... Cutting means , 61: rotating blade, 62: stationary blade, 103: spindle, 109: vacuum suction machine (suction device),
115 ... tube, 116 ... one end, 117 ... other end, 12
4: Chips, W: Work.

Claims (2)

[Claims] 1. A tool gripper for gripping and rotating a workpiece at a cutting speed so as to be opposed to a main spindle and moving forward and backward toward the workpiece, a drill attached to the tool gripper, and capable of moving forward and backward toward the workpiece. A slide member attached to the tool holding table and an urging means for urging the slide member toward the work; and attaching to a tip of the slide member via a bearing so as to be rotatable around the drill, and A rotary cylinder that rotates with the rotational force of the work as a drive source when pressed, a rotary blade attached to the rotary cylinder and the slide mounted on the rotary cylinder to cut chips passing between the inner peripheral surface of the rotary cylinder and the outer peripheral surface of the drill. A cutting device comprising a stationary blade attached to a member. 2. A cup-shaped chip storage box surrounding the drill and having a work-side surface opened is attached to the slide member near the cutting means, and one end of a tube is connected to the chip storage box. The cutting device according to claim 1, wherein a vacuum suction machine is attached to the other end of the tube, and chips in the chip storage box are discharged through the tube.