KR200485027Y1

KR200485027Y1 - Side cutter

Info

Publication number: KR200485027Y1
Application number: KR2020160004575U
Authority: KR
Inventors: 한운식
Original assignee: 주식회사 한현엔트; 한운식
Priority date: 2016-08-08
Filing date: 2016-08-08
Publication date: 2017-11-20

Abstract

The present invention relates to a side cutter, which is formed in a disk shape and has a tip accommodating portion spaced apart along a periphery thereof, a groove for reducing frictional heat is formed between the tip accommodating portions, and is rotatably connected to a rotary shaft of a cutting tool A body portion having a connection hole at the center; A lower end surface, a narrower upper end surface than the lower end surface, and a trapezoidal end surface having oblique surfaces that obliquely obish both sides of the lower end surface and the upper end surface, wherein a semicircular cutting edge is formed at one end and a rear end surface is formed at the opposite end, A side cutter for cutting a workpiece including a plurality of cutting tips each of which is integrally welded to the tip accommodating portion, wherein the lower end surface of the cutting tip is inclined in either one of the two inclined surfaces Wherein the tapered surface of the side cutter is formed as an asymmetric tapered surface, and a portion of the body adjacent to the connection hole is formed with two anti-flow holes at intervals of half the interval of the cutting tips along the circumferential direction. The cutting tip can be smoothly entered into the workpiece during the cutting operation, The load and the abrasion of the cutting tip can be minimized and the cutting operation can be smoothly performed. Further, since the time for replacing the side cutter is made longer, the cost of the cutting operation can be reduced, It is possible to prevent breakage of the cutting tip during circulation since the cutting tips do not interfere with each other during packaging, and the bulk packaging is advantageous in that the packaging cost can be reduced.

Description

Side cutter {SIDE CUTTER}

The present invention relates to a side cutter, more specifically, it can minimize the load and wear of the cutting tip by facilitating the entry of the cutting tip smoothly into the workpiece during the cutting operation, To a side cutter capable of preventing breakage due to interference between cutting tips.

In general, as shown in Fig. 1, a cutting tool (hand grinder) usually uses a flat cutter. After the flat cutter is mounted on the cutting tool, the flat cutter is rotated using the rotational force of the cutting tool, The workpiece is processed such as cutting or polishing.

In order to make an article such as a tank having a large thickness, the cutting tool is firstly cut so that the steel plate is cut to an appropriate size, and the outer side of the workpiece is cut using a cutting tool so as to easily weld .

However, since the flat cutter has a narrow contact area with the workpiece, the worker can not accurately cut the portion to be welded, and the worker can not accurately contact the workpiece with the workpiece, so that the flat cutter slides on the workpiece , Which leads to a disadvantage that workability is deteriorated. In addition, the blade of the flat cutter is easily worn down and the workability is remarkably deteriorated.

In order to secure such a problem, a side milling cutter of Patent Document 1 has been proposed.

As shown in FIG. 2, the patent document 1 includes a rotating unit that is connected to a power transmission unit such as a motor through a connection hole and rotates, and a rotating unit that is integrally coupled to an end of the body unit by welding, A blade receiving portion 11 formed at an end of the rotating means at a predetermined interval with a blade shape and a partition groove 12 formed between the blade receiving portions 11 to cool frictional heat And a connecting hole 13 to which a power transmission unit is connected. The cutting unit includes a cutting edge 21 formed in a semicircular shape, a bottom surface 22, The cutting tool 100 is mounted on the cutting tool 100 so as to have a formed upper end surface 23 and a tapered surface 24 formed to taperably connect the bottom surface 22 and the upper end surface 23, Cutting the workpiece In this case, since the blade of the side milling cutter 1 has a wider blade than the conventional one and has a high strength, the workpiece can be machined in a short period of time, and slip during contact with a conventional workpiece And the division grooves 12 are formed between the carbide blades 20, there is an effect of discharging the frictional heat generated at the cutting with the workpiece.

However, since the cutting edge 21 of the hard blade 20 approaches the same direction as the rotation direction of the body 10 when it enters the workpiece during the cutting operation of Patent Document 1, resistance is generated to discharge the cut chip And the motor required for the rotation drive is forcibly driven, which is a cause of failure of the cutting tool.

In addition, because of the contact between the blades 20 during packaging and distribution, the bulk packing is unreasonable because of the fear of breakage. Therefore, the side milling cutter 1 needs to be individually packed, which increases the packaging cost.

KR 20-0307146 Y1

In order to solve the above-mentioned problems, the present invention is directed to a cutting tool for cutting a cutting tip, And an object of the present invention is to provide a side cutter capable of preventing breakage due to interference between cutting tips during bulk packaging by forming a flow prevention hole.

In order to achieve the above object, the present invention provides a cutting tool having a tip receiving portion formed in a disk shape and spaced apart along a circumference, a partition groove for reducing frictional heat is formed between the tip accommodating portions, A body portion having a connecting hole at a center thereof so as to be connected thereto; A lower end surface, a narrower upper end surface than the lower end surface, and a trapezoidal end surface having oblique surfaces that obliquely obish both sides of the lower end surface and the upper end surface, wherein a semicircular cutting edge is formed at one end and a rear end surface is formed at the opposite end, A side cutter for cutting a workpiece including a plurality of cutting tips each of which is integrally welded to the tip accommodating portion, wherein the lower end surface of the cutting tip is inclined in either one of the two inclined surfaces The side cutter being formed of an asymmetric tapered surface.

Here, the cutting tip is divided into a left tapered tip having a tapered surface and a right tapered tip, and the left tapered tip and the right tapered tip are alternately provided in the tip accommodating portion along the circumference of the body portion.

In addition, the left tapered tip and the right tapered tip are alternately welded one by the other at the tip accommodating portion, and the tip of the flat tip is welded to the tip accommodating portion located therebetween.

In the portion of the body adjacent to the connection hole, two anti-flow holes are formed at intervals of half the arrangement interval of the cutting tips along the circumferential direction.

By providing the present invention configured as described above, first, the cutting tip smoothly enters the workpiece during the cutting operation, and the chip is easily discharged, thereby minimizing the load and wear of the cutting tip. And the time for replacing the side cutter becomes longer, thereby reducing the cost of the cutting operation.

Secondly, since the flow prevention holes formed in the body part do not interfere with each other during the bulk packing, breakage of the cutting tip during circulation can be prevented, and bulk packaging is advantageous in that the packaging cost can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exemplary view showing a conventional cutting tool. FIG.
Fig. 2 is a configuration diagram showing a side milling cutter applied to Patent Document 1. Fig.
3 is a configuration diagram showing a side cutter according to the present invention;
Fig. 4 is a perspective view showing a state of use of the side cutter according to the present invention; Fig.
Fig. 5 is an exemplary sectional view showing the use state of the side cutter according to the present invention; Fig.
6 is a view showing another embodiment showing a side cutter according to the present invention;
7 is an exemplary view showing a packaging state of the side cutter according to the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can readily implement the present invention.

The side cutter 200 of the present invention is formed in a disk shape and has a tip accommodating portion 213 formed at intervals along the periphery and a partition groove 215 for reducing frictional heat is formed between the tip accommodating portions 213 A body portion 210 having a connection hole 211 at the center so as to be rotatably connected to the rotary shaft 110 of the cutting tool 100; A bottom surface 221 and a top surface 223 that is narrower than the bottom surface 221 and a sloping surface 225 that obliquely obscures both sides of the bottom surface 221 and top surface 223 And a rear end surface 229 is formed on the opposite side of the semicircular cutting edge 227 at one end so that the upper end surface 223 and the rear end surface 229 are integrally welded to the tip accommodating portion 213, And cutting a workpiece 300 including a plurality of cutting tips 220 that are formed on the workpiece 300. [

3 to 7, the lower end surface 221 of the cutting tip 220 has an asymmetric shape that is inclined in either direction with respect to the both side inclined surfaces 225, And is formed as a tapered surface 221a.

3 and 4, the cutting tip 220 is divided into a left tapered tip 220a having a tapered surface 221a and a right tapered tip 220b. The left tapered tip 220a, The right tapered tip 220b is provided alternately in the tip accommodating portion 213 along the circumference of the body portion 210. [

That is, as the left tapered tip 220a and the right tapered tip 220b are alternately formed along the circumference of the body 210, as shown in FIG. 5 (a), the workpiece 300 is cut The cutting groove 310 can be cut along the proceeding direction.

5 (b), the surface of the workpiece 300 can be easily cut, and the grinding work previously performed by the flat cutter can be performed.

4, the left-side tapered tip 220a and the right-side tapered tip 220b of the cutting tip 220 are rotated along the body 210 to cut chips 210 on both sides of the cutting groove 310, (320).

6, the cutting tip 220 alternately welds the left tapered tip 220a and the right tapered tip 220b across the tip accommodating portion 213, and the tip accommodating portion 213 The flat tip 220c may be welded to the portion 213. [

That is, the cutting tip 220 is provided with three types of tips alternately disposed along the periphery of the body 210 in the tip accommodating portion 213, so that the workpiece is cut through the flat tip 220c with a strong cutting force And smoothly enters the work 300 through the left tapered tip 220a and the right tapered tip 220b so that the cutting chip 320 can be smoothly discharged.

Here, the flat tip 220c has the same shape as the cemented carbide blade proposed in Patent Document 1, and the lower end surface 221 is parallel.

Meanwhile, it is preferable that the body 210 reduces cost by casting, and the cutting tip 220 is made of a metal having a hardness comparatively stronger than that of the workpiece 300 or higher.

7, in the portion of the body 210 adjacent to the connection hole 211, two anti-flow balls (not shown) are formed at intervals of one half of the spacing of the cutting tips 220 along the circumferential direction, (217) is formed.

That is, in the conventional bulk packing case 400, a center rod 410 passing through the connection hole 211 of the body 210 is formed at the center, and the flow prevention hole 217 The center bar 410 is formed to have the same length as the center bar 410. [

At this time, the side cutter 200 of the present invention is accommodated in the bulk packing case 400 corresponding to the center rod 410, and the two flow prevention holes 217 formed in the body portion 210 are alternately fixed The side cutter 200 is stacked with the insert 420 and the cutting tip 220 is not overlapped or contacted with each other.

The side cutter 200 of the present invention does not flow through the inside of the bulk packaged case 400 through the combination of the fixing rod 420 and the flow preventive hole 217 to break the cutting tip 220 during the packaging flow There is no concern.

Therefore, the present invention is configured as described above, and the following effects can be obtained.

First, the cutting tip can smoothly enter the workpiece during the cutting operation, and the chip can be easily discharged. Therefore, the load and the wear of the cutting tip can be minimized, so that a smooth cutting operation can be induced. So that the cutting operation cost is reduced.

The terms and words used in the present specification and claims should not be construed in an ordinary or dictionary sense and the inventor should not be construed as to the concept of a term in order to describe its own design in the best way possible. And to be able to define it in terms of the concept of the technical idea of the present invention should be interpreted as meaning and concept.

Therefore, the configurations shown in the drawings and the embodiments described herein are merely the most preferred embodiments of the present invention, and are not intended to represent all of the technical ideas of the present invention. Therefore, It should be understood that various equivalents and modifications are possible.

100: Cutting tool
110:
200: Side cutter
210:
211: Connection hole
213: Tip accommodating portion
215:
217:
220: Cutting tip
220a: Left tapered tip
220b: Right tapered tip
220c: Balanced tip
221: bottom surface
221a: tapered surface
223: Top surface
225:
227: cutting edge
229: rear section
300: Workpiece
310: cutting groove
320: Cutting chip
400: Bulk packing case
410:
420: Fixing rod

Claims

A tip accommodating portion 213 is formed at an interval along the circumference of the tip accommodating portion 213 and a groove 215 for reducing frictional heat is formed between the tip accommodating portions 213, (210) having a connection hole (211) at the center so as to be rotatably connected to the body (110); A bottom surface 221 and a top surface 223 that is narrower than the bottom surface 221 and a sloping surface 225 that obliquely obscures both sides of the bottom surface 221 and top surface 223 And a rear end surface 229 is formed on the opposite side of the semicircular cutting edge 227 at one end so that the upper end surface 223 and the rear end surface 229 are integrally welded to the tip accommodating portion 213, A side cutter (200) for cutting a work (300) including a plurality of cutting tips (220)
The lower end surface 221 of the cutting tip 220 is formed as an asymmetrical tapered surface 221a inclined in either direction with respect to the both side inclined surfaces 225. The cutting tip 220 has a tapered surface 221a, And the right tapered tip 220a and the right tapered tip 220b are divided into a left tapered tip 220a and a right tapered tip 220b having the tip accommodating portion 213 The tip 213a of the left tapered tip 220a and the tip of the right tapered tip 220b are alternately welded while crossing the tip accommodating portion 213 one by one. 220c are welded.

delete

The method according to claim 1,
And two anti-flow holes 217 are formed in the body 210 adjacent to the connection holes 211 at intervals of half the interval between the cuts 220 along the circumferential direction Side cutter.