JPH10166239A - Milling cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently suck cutting rubbish by providing a suppression plate to be abutted on the cutting face of each cutting edge chip for each cutting edge chip mounted on the tip outer peripheral part of a milling cutter main body revolving around an axis life. SOLUTION: A suppression plate 12 is provided to be abutted on the cutting face 11a of a cutting edge chip 11. Therefore, when a sucking is performed from each sucking port, much air is not flowed in by being passed between the suppression plate 12 and the cutting face 11a of the cutting edge chip 11 and sucking efficiency of cutting rubbish cut by the cutting edge chip 11 becomes high. As a result, cutting rubbish cut is led to the suppression plate 12 provided to be abutted on the cutting face 11a of each cutting edge chip 11 and cutting rubbish is efficiently led into a cover for sucking along a guide part 12a inclined toward the inner peripheral side on the outer peripheral side of this suppression plate 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a milling apparatus used for cutting an object to be machined to perform a plane machining of the object, and more particularly, to sucking and discharging cutting chips generated by the cutting. TECHNICAL FIELD The present invention relates to a milling device provided with a suction cover having an open end so as to cover the periphery of a milling body having a plurality of cutting blade tips attached to the outer periphery of the end.

[0002]

2. Description of the Related Art Conventionally, when a workpiece is cut to perform planar processing on the workpiece, generally, as shown in FIG.
The plurality of cutting tips 1
1 is detachably attached at appropriate intervals in the circumferential direction,
The milling body 10 is rotated around its axis by a rotating device (not shown), and the object to be cut is cut and plane-processed by each of the cutting blade tips 11 attached to the milling body 10. .

[0003] Here, when the cutting object is cut by each cutting edge tip 11 of the rotating milling body 10, cutting chips are generated.

Conventionally, the cutting chips generated as described above are guided from the rake face 11a of each cutting edge tip 11 to the wall surface of the tip pocket 13 and rounded. To be discharged.

[0005] However, when the cutting chips are simply discharged outward in the circumferential direction of the milling body 10, the cutting chips are widely scattered to the surroundings with the rotation of the milling body 10, and as a result, There are problems that the working environment is degraded, danger is caused in the work, and that it takes time to process the chips after cutting.

For this reason, in the prior art, the actual fairness 7-7
As shown in Japanese Patent No. 053 and the like, a suction cover having an open end is provided so as to cover the periphery of the milling body that rotates around the axis as described above, and the rake face of each cutting edge chip is provided. The cutting chip guide member is arranged on the outer periphery of the tip of the milling body so as to form a gap for guiding the cutting chips therebetween, and the cutting chips of the work to be cut by the cutting chip are removed from the rake face of the cutting chip. Through the gap between the cutting chip guide member and the inner peripheral surface of the suction cover and the outer peripheral surface of the milling body, and into the cutting chip storage chamber through the suction port provided in the suction cover. A device that sucks and collects cuttings was developed.

[0007] However, as described above, the cutting chip guide member is arranged so as to form a gap for guiding the cutting chips between the rake face of the cutting blade tip and the cutting chips are introduced into the cutting chip storage chamber through this gap. In the case where air is guided, there is a problem that air flows into the suction cover through the gap, and the effect of sucking cutting chips is reduced.

In the case where the cutting chips cut by the cutting chip as described above are introduced into the cutting chip storage chamber through the gap between the rake face of the cutting chip and the cutting chip guide member, the cutting chips may be removed. Between the rake face and the cutting waste guide member and fuses, the cutting waste is no longer guided to the cutting waste storage chamber, and the cutting waste is not sufficiently collected. There are problems such as damage to the cutting edge chip and the cutting waste guide member due to fusion with the member, and deterioration of the cutting finish of the workpiece.

[0009]

According to the present invention, a plurality of cutting blade tips are attached to the outer peripheral portion of the front end of the milling body as described above, and the suction end is opened so as to cover the periphery of the milling body. A milling machine that arranges a cover for cutting, rotates the milling body around the axis, cuts the workpiece with each cutting tip, and sucks and collects the cutting chips thus cut through the suction cover. An object of the present invention is to solve the above-described problems in the device.

That is, in the present invention, the milling body is rotated around the axis as described above, and the cutting object is cut by each cutting tip provided on the outer peripheral portion of the front end thereof. Is collected through the above-mentioned suction cover provided so as to cover the periphery of the milling body, the cutting chips are effectively suctioned, and the cutting chips are sufficiently collected. An object of the present invention is to provide a milling device that can cut a workpiece well without being fused to the cutting edge chip or the like and causing the cutting edge chip or the like to be damaged.

[0011]

In the milling apparatus according to the present invention, in order to solve the above-mentioned problems, a plurality of cutting tips 11 are attached to the outer periphery of the tip of a milling body 10 which rotates around an axis. In a milling apparatus provided with a suction cover 20 having an opening at the tip so as to cover the periphery of the milling body 10, the rake of each of the cutting edge chips 11 is formed on the outer periphery of the tip of the milling body 10. The restraining plate 12 is provided so as to abut the surface 11a, and a guide portion 12a inclined toward the inner circumferential side is provided at an outer peripheral portion of the restraining plate 12 abutting on the rake face 11a of the cutting edge chip 11. It was.

Here, like the milling device of the present invention, each cutting edge 11 attached to the outer peripheral portion of the tip of the milling body 10 is restrained by contacting the rake face 11 a of each cutting edge 11. When the plate 12 is provided,
Air does not flow into the suction cover 20 from between the rake face 11a of the cutting edge tip 11 and the deterrent plate 12, and the effect of sucking the cutting chips is not reduced, and the cutting chips are efficiently sucked. Become like

Further, in the milling apparatus according to the present invention, the rake face 11 of each cutting edge tip 11 is provided as described above.
Since the guide plate 12a inclined toward the inner peripheral side is provided on the outer peripheral portion of the depressing plate 12 provided to come into contact with the rake face 11a of the cutting blade tip 11, the milling cutter is used. When the main body 10 is rotated around the axis and the cut object is cut by each cutting edge chip 11, the generated cutting chips are guided into the suction cover 20 along the guide portion 12 a provided on the restraining plate 12. As a result, the cutting chips guided into the suction cover 20 are efficiently sucked and collected as described above.

Further, in the milling apparatus of the present invention, when the above-mentioned restraining plate 12 is provided so as to be movable toward the cut portion of the cutting edge chip 11, the material of the work to be cut, the feed speed and the cutting depth of the milling apparatus are provided. In consideration of such cutting conditions, the distance between the cut portion of the cutting edge tip 11 and the outer peripheral end of the suppression plate 12 can be adjusted.

If the guide portion 12a of the restraint plate 12 is brought close to the cut portion of the cutting edge tip 11 to reduce the gap on the outer peripheral side, the effect of sucking the cutting chips is further enhanced, and the cutting by the guide portion 12a is performed. Guidance of waste can be done well.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

Also in the milling apparatus of this embodiment, as shown in FIG. 2, a plurality of cutting tips 11 are attached to the outer peripheral portion of the tip of the milling body 10.

In the milling apparatus of this embodiment, as shown in FIGS.
At the outer peripheral portion of the tip, a restraining plate 12 is attached so as to be slightly inclined downward toward the cutting edge chip 11, and the restraining plate 12 rakes each cutting edge tip 11 at a position slightly above the tip of the cutting edge tip 11. It came into contact with the surface 11a.

In this embodiment, as shown in FIGS. 3 to 5, the above-mentioned depressing plate 12 has a corner at the upper part on the outer peripheral side and is inclined toward the inner peripheral side. In addition to providing the guide portion 12a and attaching the restraining plate 12 to the milling body 10, the milling body 1
For example, the mounting position of the deterrent plate 12 can be moved toward the cut portion of the cutting edge chip 11 by making the mounting hole (not shown) attached to the slot 0 long, so that the cut portion of the cutting edge tip 11 and the cut portion are suppressed. The distance between the plate 12 and the end on the outer peripheral side can be adjusted. In addition, this cutting blade tip 1
The distance between the cut portion in FIG. 1 and the outer peripheral end of the suppression plate 12 was determined in consideration of the material of the workpiece 1 and the cutting conditions such as the feed speed and cutting depth of the milling device.

In order to rotate the milling body 10 around the axis, as shown in FIG. 6, a mounting member 33 is fitted into the central hole 14 on the tip side of the milling body 10 and rotated by the rotating device 30. The milling body 10 is sandwiched between the adapter 32 attached to the spindle 31 and the attachment member 33. In this state, the attachment member 33 is attached to the adapter 32 by a fastening member 34 such as a bolt. Key 35 provided between main body 10 and adapter 32
Thus, the milling body 10 is rotated around the axis with the rotation of the spindle 31.

Further, the suction cover 20 having an open end is provided so as to cover the periphery of the milling body 10 attached so as to rotate together with the spindle 31 as described above.

Here, as the suction cover 20,
As shown in FIGS. 6 and 7, the lower cover 20 b is rotatably attached to the upper cover 20 a by the hinge 21, and the lower cover 20 b is attached to the upper cover 2.
In this state, the lower cover 20b is fixed to the upper cover 20a by the retaining pin 22 in a state where the lower cover 20b is adjusted to 0a.

In the lower cover 20b,
Around the periphery thereof, a cutting chip guide path 23 protruding so as to gradually expand to the outer peripheral side is provided, and the lower end on the inner peripheral side of the guide path 23 gradually protruding in this manner has elasticity to contact the surface of the workpiece 1. And a first suction port 25a for sucking and discharging cutting chips is provided at the end of the cutting chip guide path 23 on the swelling side. Two air inlets 26a and 26b for introducing air to a suitable position are provided, and in addition to the first suction port 25a, a second suction port 25b for sucking and discharging cutting chips is provided.

When the suction cover 20 is provided so as to cover the periphery of the milling body 10, the stop pin 22 is removed, and the lower cover 20b is rotated downward and opened. Top cover 20a
The spindle 31 is inserted into the upper cover 20a.
To be attached to the cover 36 of the rotating device 30.

Thereafter, the lower cover 20b in the open state as described above is rotated upward to
b was closed to the upper cover 20a, and in this state, the lower cover 20b was fixed to the upper cover 20a by the retaining pin 22.

When the workpiece 1 is cut by the milling apparatus of this embodiment and the plane is machined, the milling body 10 is rotated about an axis by the spindle 31 of the rotating device 30 and the milling body is rotated. A milling body 10 that cuts the workpiece 1 by a plurality of cutting blade tips 11 provided on the outer periphery of the tip of the cutter 10 and rotates air from the air introduction ports 26a and 26b provided in the suction cover 20; While being introduced between the suction cover 20 and each suction port 25
The suction is performed through the suction ports 25a and 25b, and the cut chips are collected through the suction ports 25a and 25b.

Here, when the workpiece 1 is cut by each of the cutting blade tips 11 provided on the milling body 10 which rotates as described above, the cut chips are removed by the respective cutting blade chips 11.
The cutting chips are guided to the above-mentioned restraining plate 12 provided so as to contact the rake face 11a, and the cutting chips are sucked along the above-mentioned guide portion 12a inclined toward the inner circumferential side on the outer circumferential side of the restraining plate 12. Since the cutting chips are guided into the cover 20, the cutting chips are not clogged between the rake face 11 a of the cutting edge chip 11 and the deterrent plate 12 and fused, so that the cutting edge chip 1
1 and the deterrent plate 12 were not damaged.

Further, in the milling apparatus of this embodiment, since the restraining plate 12 is provided so as to contact the rake face 11a of the cutting edge tip 11 as described above, the suction ports 25a and 25b are provided as described above. When suction is performed from the cutting edge, air rarely flows through the space between the deterrent plate 12 and the rake face 11a of the cutting edge tip 11, and the suction efficiency of the cutting chips cut by the cutting edge tip 11 increases, and As described above, the cutting chips cut by the blade tip 11 are efficiently guided into the suction cover 20 along the guide portion 12a of the restraining plate 12.

The cutting chips thus guided into the suction cover 20 are guided between the milling body 10 and the suction cover 20 by suction from the suction ports 25a and 25b. The cutting chips guided as described above are blown off by the air introduced from the air introduction ports 26a and 26b, and the cutting chips are removed from the suction ports 25 described above.
a, 25b, it was efficiently collected.

In this embodiment, the suppression plate 12
As the above, the one in which the corner at the upper part on the outer peripheral side is chamfered to provide the guide part 12a inclined toward the inner peripheral side is used, but the restraining plate 12 is not limited to the above. It is sufficient if the outer peripheral portion has a guide portion 12a inclined toward the inner peripheral side.

For example, as shown in FIG. 8, a guide plate 12a is formed by bending an outer peripheral portion of an inhibitor plate 12 made of a thin plate upward on an inner peripheral side, or as shown in FIGS. ), A recess 12b having a guide portion 12a inclined toward the inner peripheral side is provided at a corner on the outer peripheral side of the depressing plate 12 which comes into contact with the rake face 11a of the cutting edge tip 11, and FIG. As shown in FIGS. 10 (A) to 10 (C), a guide portion 12a is provided in which a corner portion on the outer peripheral side of the restraining plate 12 which is in contact with the rake face 11a of the cutting edge tip 11 is cut out and inclined toward the inner peripheral side. Can be used.

[0032]

As described above in detail, in the milling apparatus according to the present invention, the rake face of each cutting edge tip is attached to the cutting edge tip attached to the outer periphery of the tip end of the milling body rotating around the axis. Since the suppression plate is provided so as to abut against the air, the air flows into the suction cover from between the rake face of the cutting blade tip and the suppression plate, and the effect of sucking the cutting chips is not reduced, Cutting chips are now efficiently sucked.

Further, in the milling apparatus according to the present invention, the depressing plate provided so as to come into contact with the rake face of each cutting edge tip as described above includes an outer peripheral portion which comes into contact with the rake face of the cutting edge tip. In order to provide a guide portion inclined toward the inner peripheral side, when the milling body is rotated around the axis to cut the workpiece by each cutting tip, the generated cutting chips are provided on the deterrent plate. Of the suction cover along the guide portion.

As a result, when the workpiece is cut by the milling device of the present invention to perform the flat machining of the workpiece, the cutting chips clogged as in the related art are clogged with the cutting tip or the like. No more fusing,
The cutting work can be stably performed, and the cutting waste can be efficiently collected.

Further, in the milling apparatus according to the present invention, when the above-mentioned restraining plate is provided so as to be movable toward the cut portion of the cutting edge tip, the material of the work to be cut, the feed speed of the milling apparatus, the cutting depth and the like can be reduced. It is possible to adjust the interval between the cutting portion of the cutting edge tip and the outer peripheral end of the suppression plate in consideration of the cutting conditions, and by reducing this interval, the effect of sucking the cutting chips is further increased, The guidance of cutting chips by the guide part can be further improved.

[Brief description of the drawings]

FIG. 1 is a partially sectional explanatory view of a conventional milling body.

FIG. 2 is a partially sectional explanatory view of a milling body used in the milling apparatus according to one embodiment of the present invention.

FIG. 3 is a cross-sectional explanatory view showing a state of an outer peripheral side of a suppression plate provided so as to abut on a rake face of a cutting edge tip in the milling apparatus according to the embodiment.

FIG. 4 is a side view showing a state in which an inhibiting plate is provided so as to abut the rake face of the cutting edge tip in the milling apparatus according to the above embodiment.

FIG. 5 is a plan view showing a state in which an inhibiting plate is provided so as to abut on a rake face of a cutting edge tip in the milling apparatus according to the embodiment.

FIG. 6 is a cross-sectional explanatory view showing a state in which the milling device according to the above embodiment rotates the milling body by the rotating device and cuts the workpiece by the cutting tip.

FIG. 7 is a schematic explanatory view on the bottom side of the milling apparatus according to the above embodiment.

FIG. 8 is an explanatory view showing a first modification of a suppression plate provided so as to contact a rake face of a cutting edge tip in the milling apparatus according to the embodiment.

FIG. 9 is an explanatory view showing a second modification of the inhibiting plate provided so as to abut the rake face of the cutting edge tip in the milling apparatus according to the embodiment.

FIG. 10 shows a milling apparatus according to the above embodiment.
It is explanatory drawing which showed the 3rd modification of the suppression plate provided so that it may contact the rake face of a cutting edge chip.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Milling body 11 Cutting edge tip 11a Rake surface 12 Suppression plate 12a Guide part 20 Suction cover

Claims (2)

[Claims] 1. A plurality of cutting blades 11 are attached to the outer periphery of a front end of a milling body 10 that rotates around an axis, and a suction cover 20 having a front end opened to cover the periphery of the milling body 10. In the milling apparatus provided, an inhibiting plate 12 is provided on the outer peripheral portion of the tip of the milling body 10 so as to contact the rake face 11a of each cutting edge chip 11, and the cutting edge chip 11. A milling device, wherein a guide portion 12a inclined toward an inner peripheral side is provided at a portion on an outer peripheral side which abuts on a rake face 11a of the milling device 11. 2. A milling device according to claim 1, wherein said restraining plate is provided so as to be movable toward a cutting portion of said cutting edge tip.