KR20100081391A - Rotary cutter for rounding and chamfering both sides of work - Google Patents

Rotary cutter for rounding and chamfering both sides of work Download PDF

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Publication number
KR20100081391A
KR20100081391A KR1020090000614A KR20090000614A KR20100081391A KR 20100081391 A KR20100081391 A KR 20100081391A KR 1020090000614 A KR1020090000614 A KR 1020090000614A KR 20090000614 A KR20090000614 A KR 20090000614A KR 20100081391 A KR20100081391 A KR 20100081391A
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KR
South Korea
Prior art keywords
rotary cutter
insertion hole
chamfering
shaft insertion
key groove
Prior art date
Application number
KR1020090000614A
Other languages
Korean (ko)
Inventor
장두한
Original Assignee
장두한
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Filing date
Publication date
Application filed by 장두한 filed Critical 장두한
Priority to KR1020090000614A priority Critical patent/KR20100081391A/en
Publication of KR20100081391A publication Critical patent/KR20100081391A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/02—Milling-cutters characterised by the shape of the cutter
    • B23C5/12—Cutters specially designed for producing particular profiles
    • B23C5/14—Cutters specially designed for producing particular profiles essentially comprising curves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/12—Trimming or finishing edges, e.g. deburring welded corners
    • B23C3/126—Portable devices or machines for chamfering edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/26—Securing milling cutters to the driving spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2220/00—Details of milling processes
    • B23C2220/16—Chamferring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2260/00—Details of constructional elements
    • B23C2260/04—Adjustable elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2260/00—Details of constructional elements
    • B23C2260/68—Rings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)

Abstract

PURPOSE: A rotary cutter for chamfering two sides of a workpiece are provided to easily control the interval between upper and lower rotary cutters according to the thickness of a workpiece using a height adjusting spacer. CONSTITUTION: A rotary cutter for chamfering two sides of a workpiece comprises upper and lower rotary cutters(2,5). The upper rotary cutter is formed into an inverse truncated cone shape having a shaft insertion hole(3) in the center and cutting edges(4) on the exterior thereof, wherein shaft insertion hole has a key groove(3a) on a side of the interior thereof. The lower rotary cutter is formed into a conical shape having a shaft insertion hole(6) in the center and cutting edges(7) on the exterior thereof, wherein a key groove(6a) of the shaft insertion hole is connected to the key groove of the upper rotary cutter.

Description

Rotary cutter for rounding and chamfering both sides of work}

The present invention relates to a rotary cutter for double-sided chamfering, and more specifically, the upper rotary cutter is formed in the shape of an inverted cone and the center portion is inserted through the shaft insertion hole formed with a key groove on one side of the inner circumferential surface and a plurality of cutting blades on the outer circumferential surface; It is formed to form the upper and lower symmetry with the upper rotary cutter is formed in a truncated conical shape and the shaft insertion hole communicating with the shaft insertion hole of the upper rotation cutter in the center portion is formed through and communicates with the key groove of the upper rotary cutter on one side of the inner peripheral surface of the shaft insertion hole. The key groove is formed and the outer circumferential surface is composed of a lower rotary cutter having a plurality of cutting blades, so that the upper and lower edges of the iron plate can be chamfered at the same time without turning the iron plate at the time of chamfering of the edge of the iron plate. Workability is reduced by reducing the time and effort required for chamfering of corners. It is possible to improve the width, and since the height adjusting spacer is inserted between the upper and lower rotary cutters, the gap between the upper and lower rotary cutters can be easily adjusted according to the thickness of the steel plate, thereby greatly improving practicality. It relates to a double-sided chamfering rotary cutter.

In general, after cutting a steel plate in a shipyard, it is chamfered by grinding the sharp edges of the cut steel plate using a grinder equipped with an abrasive disc, and the chamfering work using such an abrasive disc takes much time and effort. There was a problem that workability is significantly reduced.

In order to solve this problem, conventionally, a method of chamfering by cutting with a rotary cutter has been devised instead of grinding a sharp edge of an iron plate with an abrasive disc.

Conventional chamfering rotary cutter used in the chamfering processing method using such a rotary cutter is formed in the shape of an inverted cone as shown in Figure 1, the central portion is formed through the shaft insertion hole formed with a key groove on one side of the inner peripheral surface and a plurality of the outer peripheral surface Cutting edge portions 10a are configured.

Conventional chamfering rotary cutter configured as described above is inserted into the shaft insertion hole formed in the center portion so that the rotary shaft of the power tool or air tool 20 is inserted into the outer peripheral surface of the key groove and the rotation shaft formed on one side of the inner peripheral surface of the shaft insertion hole The cutter fixing key is inserted in accordance with the formed key groove, and then the cutter fixing bolt is firmly fixed by fastening the cutter fixing bolt to the bolt fastening hole formed at the center of the rotating shaft, so that it can be easily mounted and used on an electric tool or an air tool. Rotating at a high speed, so that the sharp edges of the iron plate 30 can be cut quickly, thereby greatly improving workability.

However, when chamfering the corner portion of the iron plate 30 using the conventional chamfering rotary cutter 10 as described above, first chamfer the upper edge of the iron plate 30 so that the bottom face upwards When the iron plate 30 is turned upside down, the corner portion is chamfered, but when the size of the iron plate 30 is small, the steel plate can be easily turned upside down, but when the size is large, such as a ship iron plate, the upper edge of the iron plate 30 is chamfered. After machining, the steel plate 30 should be carefully turned upside down using a crane, and then the bottom edge should be chamfered. Therefore, more time is needed to flip the steel plate 30 rather than the time and effort required to chamfer the steel plate 30. There was a problem that the workability is significantly degraded as time and effort are required.

The present invention is to solve the above problems, the upper cone cutter is formed in the shape of an inverted cone and formed in the center portion through the shaft insertion hole formed with a key groove on one side of the inner circumferential surface and a plurality of cutting blades on the outer circumferential surface, the upper rotary cutter It is formed so as to form up and down symmetrical and is formed in a truncated conical shape, the center portion is formed through the shaft insertion hole communicating with the shaft insertion hole of the upper rotary cutter, and the inner side of the shaft insertion hole is formed in the key groove of the upper groove cutter to communicate with the key groove The outer circumferential surface is composed of a lower rotary cutter with a plurality of cutting edges, so that the upper and lower edges of the iron plate can be chamfered at the same time without inverting the iron plate when chamfering the corners of the iron plate. To greatly improve workability by reducing the time and effort required for work Also, since the height adjusting spacer is inserted between the upper and lower rotary cutters, the gap between the upper and lower rotary cutters can be easily adjusted according to the thickness of the steel plate, thereby greatly improving practicality. It is a technical problem.

The present invention for achieving the above technical problem is formed in the shape of an inverted truncated cone, the central portion is formed through the shaft insertion hole formed with a key groove on one side of the inner circumferential surface and a plurality of cutting blades are formed on the outer circumferential surface, the upper rotary cutter and It is formed to form the upper and lower symmetry, is formed in a truncated cone shape in the center portion is formed through the shaft insertion hole communicating with the shaft insertion hole of the upper rotary cutter, the key groove is formed on one side of the inner peripheral surface of the shaft insertion hole in communication with the key groove of the upper rotary cutter The outer circumferential surface is characterized in that consisting of a lower rotary cutter formed with a plurality of cutting edges.

In addition, the present invention is formed between the upper rotary cutter and the lower rotary cutter is formed in the center of the through-hole communicating with the shaft insertion hole of the upper and lower rotary cutter, and the key groove of the upper and lower rotary cutter to communicate with the key groove of the upper and lower rotary cutter Characterized in that the configured height adjustment spacer is inserted.

As described above, the rotating cutter for double-sided chamfering according to the present invention is formed in an inverted truncated cone shape and has a central insertion hole formed therein with a key groove formed at one side of the inner circumferential surface thereof, and a plurality of cutting blades formed at the outer circumferential surface thereof. It is formed to form the upper and lower symmetry with the rotary cutter is formed in the shape of a truncated cone in the center portion through which the shaft insertion hole communicating with the shaft insertion hole of the upper rotary cutter is formed through the key groove of the inner peripheral surface of the shaft insertion hole communicated with the key groove of the upper rotary cutter Is formed and the outer circumferential surface is composed of a lower rotary cutter formed with a plurality of cutting edges, the upper and lower edges of the iron plate can be chamfered at the same time without turning the iron plate when chamfering the corner portion of the iron plate Significantly improves workability by reducing the time and effort required for chamfering work It is able to.

In addition, since the rotating cutter for double-sided chamfering according to the present invention is configured such that the height adjusting spacer is inserted between the upper and lower rotary cutters, the gap between the upper and lower rotary cutters can be easily adjusted according to the thickness of the steel plate, thereby greatly improving practicality. It can be improved.

Hereinafter, the present invention will be described in detail with reference to FIGS. 1 to 5 to achieve the above object.

Figure 2 is a perspective view showing a double-sided chamfering rotary cutter according to the present invention, Figure 3 is an explanatory view showing a state of use of the double-sided chamfering rotary cutter according to the present invention, Figure 4 is a double-sided chamfering rotary cutter according to the present invention 5 is a perspective view illustrating another embodiment of the present invention, and FIG. 5 is an explanatory view showing a state of use of a double-sided chamfering rotary cutter according to another embodiment of the present invention.

Double side chamfering rotary cutter according to the present invention is configured such that the upper rotary cutter 2 and the lower rotary cutter (5) to form a pair as shown in FIG.

The upper rotary cutter (2) is formed in the shape of an inverted truncated cone, the central portion is formed through the shaft insertion hole (3) formed with a key groove (3a) on one side of the inner peripheral surface, a plurality of cutting edges (4) is formed on the outer peripheral surface .

In addition, the lower rotary cutter 5 is formed to form the upper and lower symmetry with the upper rotary cutter 2, is formed in a truncated cone shape in the center portion is inserted into the shaft in communication with the shaft insertion hole (3) of the upper rotary cutter (2) A hole 6 is formed therethrough, and a key groove 6a communicating with the key groove 3a of the upper rotary cutter 2 is formed at one side of the inner circumferential surface of the shaft insertion hole 6, and a plurality of cutting edges 7 are formed at the outer circumferential surface thereof. ) Is formed.

In addition, another embodiment of the double-sided chamfering rotary cutter according to the present invention is configured such that the height adjusting spacer 8 is inserted between the upper rotary cutter 2 and the lower rotary cutter 5 as shown in FIG. do.

At this time, the height adjustment spacer (8) is formed in the center of the through hole (9) in communication with the shaft insertion hole (3) (6) of the upper and lower rotary cutter (2) (5), One side of the inner circumferential surface is configured such that a key groove 9a communicating with the key grooves 3a and 6a of the upper and lower rotary cutters 2 and 5 is formed.

Referring to the working relationship of the two-sided chamfering rotary cutter according to the present invention configured as described above are as follows.

In the rotary cutter for double-sided chamfering according to the present invention, the upper rotary cutter 2 and the lower rotary cutter 5 are sequentially arranged on the rotary shaft 21 provided in the electric tool or the air tool 20 as shown in FIG. 3. After insertion, the key groove 3a formed at one side of the inner peripheral surface of the shaft insertion hole 3 of the upper rotary cutter 2 and the key groove 6a formed at one side of the inner peripheral surface of the shaft insertion hole 6 of the lower rotary cutter 5 are inserted. Insert the cutter fixing key 22 in accordance with the key groove 21a formed on one side of the outer circumferential surface of the rotating shaft 21, and then fasten the cutter fixing bolt 23 to the bolt fastening hole 21b formed at the center of the rotating shaft 21. It can be installed easily by fixing it firmly.

Thus, after firmly mounting the double-sided chamfering rotary cutter 1 on the rotary shaft 21 of the electric tool or air tool 20, the upper rotary cutter of the double-sided chamfering rotary cutter 1 mounted on the rotary shaft 21 The cutting edge portion 4 provided at (2) is in contact with the upper edge portion of the iron plate 30 to be processed, and the cutting edge portion 7 provided at the lower rotary cutter 5 is the lower edge portion of the iron plate 30. When the rotating shaft 21 is rotated in a state of being in contact with the upper plate, the upper rotary cutter 2 and the lower rotary cutter 5 of the double-sided chamfering rotary cutter 1 rotate together with the rotary shaft 21 at high speed. The upper and lower corner portions of 30 can be cut simultaneously.

According to the rotary cutter for double-sided chamfering of the present invention as described above, the upper and lower edges of the iron plate 30 can be chamfered at the same time without turning over the iron plate 30 when chamfering the corner portion of the iron plate using a crane By reducing the time and effort required to overturn the iron plate 30, it is possible to significantly improve the workability by reducing the time and effort required for the chamfering work on the edge of the ship steel plate.

In addition, the double-sided chamfering rotary cutter according to another embodiment of the present invention is configured such that the height adjusting spacer 8 is inserted between the upper rotary cutter 2 and the lower rotary cutter 5, the thickness of the iron plate to be chamfered According to it can be easily adjusted the interval between the upper rotary cutter (2) and the lower rotary cutter (5).

At this time, the height-adjusting spacers 8 are manufactured to have a plurality of heights and then used to select the one having a suitable height according to the thickness of the iron plate to be chamfered.

The rotary cutter for double-sided chamfering according to another embodiment of the present invention is the upper rotary cutter 2 and the height adjustment spacer 8 on the rotary shaft 21 provided in the power tool or air tool 20 as shown in FIG. ) And the lower rotary cutter (5) in order, and then the key groove (3a) formed on one side of the inner peripheral surface of the shaft insertion hole (3) of the upper rotary cutter (2) and the through hole (9) of the height adjustment spacer (8) For fixing the cutter by fitting the key groove 9a formed on one side of the inner peripheral surface and the key groove 6a formed on one side of the inner peripheral surface of the shaft insertion hole 6 of the lower rotary cutter 5 to the key groove 21a formed on one side of the outer peripheral surface of the rotary shaft 21. After the key 22 is inserted, the cutter fixing bolt 23 is fastened firmly to the bolt fastening hole 21b formed at the center of the rotating shaft 21 so that the key 22 can be easily mounted.

Thus, after firmly mounting the double-sided chamfering rotary cutter 1 on the rotary shaft 21 of the electric tool or air tool 20, the upper rotary cutter of the double-sided chamfering rotary cutter 1 mounted on the rotary shaft 21 The cutting edge portion 4 provided at (2) is in contact with the upper edge portion of the iron plate 30 to be processed, and the cutting edge portion 7 provided at the lower rotary cutter 5 is the lower edge portion of the iron plate 30. When the rotating shaft 21 is rotated in a state of being in contact with the upper, the upper rotary cutter 2 and the lower rotary cutter 5 of the double-sided chamfering rotary cutter 1 are spaced apart from each other by the height of the height adjusting spacer 8. The upper edge portion and the lower edge portion of the thick iron plate 30 can be simultaneously cut while rotating at a high speed with the rotary shaft 21 in a state.

According to the rotary cutter for double-sided chamfering according to another embodiment of the present invention as described above, the upper rotary cutter (2) and the lower rotary cutter (5) according to the thickness of the iron plate to be chamfered during the chamfering operation for the edge of the thick iron plate ) Using the height adjusting spacer 8 inserted between the upper plate cutter 2 and the lower rotary cutter (5) in the state of easily adjusting the gap between the iron plate 30 without turning the thick plate 30 Since the upper and lower edges can be chamfered at the same time, not only the practicality can be greatly improved, but also the time and effort required to overturn the thick steel plate 30 by using a crane can be reduced, thereby reducing the Work time can be greatly improved by reducing the time and effort required for chamfering of corners.

1 is an explanatory view showing a state of use of the chamfering rotary cutter according to the prior art.

Figure 2 is a perspective view showing a double-sided chamfering rotary cutter according to the present invention.

3 is an explanatory view showing a state of use of the rotary cutter for double-sided chamfering according to the present invention.

Figure 4 is a perspective view showing another embodiment of a double-sided chamfering rotary cutter according to the present invention.

5 is an explanatory view showing a state of use of the double-sided chamfering rotary cutter according to another embodiment of the present invention.

<Explanation of symbols for main parts of drawing>

1: Double sided chamfering cutter 2: Upper rotating cutter

3: shaft insertion hole 3a: keyway

4: Cutting edge part 5: Lower rotary cutter

6: shaft insertion hole 6a: keyway

7: cutting edge portion 8: height adjustment spacer

9: through-hole 9a: keyway

Claims (2)

It is formed in the shape of an inverted truncated cone and the upper rotation cutter (2) is formed through the shaft insertion hole (3) formed with a key groove (3a) on one side of the inner peripheral surface and a plurality of cutting edges (4) on the outer peripheral surface; It is formed to form the upper and lower symmetry with the upper rotary cutter (2), it is formed in a truncated conical shape and the shaft insertion hole (6) communicating with the shaft insertion hole (3) of the upper rotary cutter (2) is formed through the shaft On one side of the inner circumferential surface of the insertion hole (6) is formed a key groove (6a) in communication with the key groove (3a) of the upper rotary cutter (2) and a lower rotary cutter (5) having a plurality of cutting edges (7) formed on the outer peripheral surface Double-sided chamfering rotary cutter, characterized in that configured. According to claim 1, Between the upper rotary cutter (2) and the lower rotary cutter (5) a through hole communicating with the shaft insertion hole (3) (6) of the upper and lower rotary cutter (2) (5) 9) is formed and the height-adjusting spacer 8 is formed on one side of the inner circumferential surface of the through hole 9 formed with a key groove 9a communicating with the key grooves 3a and 6a of the upper and lower rotary cutters 2 and 5. Double-sided chamfering rotary cutter, characterized in that.
KR1020090000614A 2009-01-06 2009-01-06 Rotary cutter for rounding and chamfering both sides of work KR20100081391A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020090000614A KR20100081391A (en) 2009-01-06 2009-01-06 Rotary cutter for rounding and chamfering both sides of work

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020090000614A KR20100081391A (en) 2009-01-06 2009-01-06 Rotary cutter for rounding and chamfering both sides of work

Publications (1)

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KR20100081391A true KR20100081391A (en) 2010-07-15

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KR1020090000614A KR20100081391A (en) 2009-01-06 2009-01-06 Rotary cutter for rounding and chamfering both sides of work

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104084633A (en) * 2014-07-04 2014-10-08 青岛海西重工有限责任公司 Machine clamp type rounding-off milling cutter
CN104107945A (en) * 2013-04-16 2014-10-22 南京永兴铁路配件有限公司 Milling cutter for forming groove in coupler yoke through milling
KR20220074703A (en) * 2020-11-27 2022-06-03 창 신-티엔 Combined chamfering tool
IT202200001280A1 (en) * 2022-01-26 2023-07-26 Raffaele Guerrieri STRUCTURE OF PORTABLE BEVELING MACHINE

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104107945A (en) * 2013-04-16 2014-10-22 南京永兴铁路配件有限公司 Milling cutter for forming groove in coupler yoke through milling
CN104084633A (en) * 2014-07-04 2014-10-08 青岛海西重工有限责任公司 Machine clamp type rounding-off milling cutter
KR20220074703A (en) * 2020-11-27 2022-06-03 창 신-티엔 Combined chamfering tool
US11583941B2 (en) * 2020-11-27 2023-02-21 Hsin-Tien Chang Assembled chamfer mill
IT202200001280A1 (en) * 2022-01-26 2023-07-26 Raffaele Guerrieri STRUCTURE OF PORTABLE BEVELING MACHINE

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