US20020174758A1 - Cutting-off apparatus - Google Patents
Cutting-off apparatus Download PDFInfo
- Publication number
- US20020174758A1 US20020174758A1 US10/090,729 US9072902A US2002174758A1 US 20020174758 A1 US20020174758 A1 US 20020174758A1 US 9072902 A US9072902 A US 9072902A US 2002174758 A1 US2002174758 A1 US 2002174758A1
- Authority
- US
- United States
- Prior art keywords
- tip saw
- cutting
- casting
- rotated
- diamond
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 30
- 239000010432 diamond Substances 0.000 claims abstract description 30
- 238000005266 casting Methods 0.000 claims abstract description 29
- 238000005520 cutting process Methods 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
- B22D29/04—Handling or stripping castings or ingots
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D45/00—Sawing machines or sawing devices with circular saw blades or with friction saw discs
- B23D45/26—Sawing machines or sawing devices with circular saw blades or with friction saw discs with high-speed cutting discs, performing the cut by frictional heat melting the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
- B23D61/02—Circular saw blades
- B23D61/025—Details of saw blade body
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/929—Tool or tool with support
- Y10T83/9319—Toothed blade or tooth therefor
Definitions
- the present invention relates to an apparatus for cutting off an unnecessary object deposited on any of various castings such as automobile parts produced from an aluminum alloy or the like by a casting process, and particularly, to an apparatus for cutting off an unnecessary object, which includes a diamond tip saw for cutting off an unnecessary object such as a gate of a casting, and a rotary device such as a motor for rotating the tip saw.
- the present invention relates to an apparatus for cutting off an unnecessary object deposited on a casting, which includes a diamond tip saw for cutting off an unnecessary object such as a gate deposited on a casting, and a rotary device such as a motor for rotating the tip saw at a high speed, wherein the amount of diamond tips used can be reduced; an energy-saving for a cutting power can be achieved, and the amount of chips produced upon the cutting of the unnecessary object can be reduced to decrease the useless amount of a material for the casting.
- various parts for an automobile e.g., a cylinder head, a cylinder block, an intake manifold and the like are produced from an aluminum alloy by a casting process.
- a casting produced by such casting process has an unnecessary object such as a gate deposited thereon, and it is necessary to cut off the unnecessary object from the casting, thereby remarkably reducing the production cost for the casting.
- the rotational speed of the diamond tip saw is in a range of 1,000 to 3,600 rpm, but in order to prevent the occurrence of a vibration during the cutting, the thickness of the tip saw is required to be on the order of 6 to 8 mm, if the diameter of the tip saw is on the order of 400 ⁇ .
- the present inventors have found that if the rotational speed of the tip saw is increased to 4,000 rpm or more, an increase in rigidity of the tip saw is provided remarkably by a centrifugal force provided by the tip saw itself and a gyroscopic moment effect and as a result, the thickness of the tip saw can be decreased by a value corresponding to an increment in rigidity of the tip saw.
- the present invention has been accomplished from the above finding.
- an object of the present invention to provide an apparatus for cutting off an unnecessary object deposited on a casting, which includes a diamond tip saw for cutting off an unnecessary object such as a gate deposited on a casting, and a rotary device such as a motor for rotating the tip saw at a high speed, wherein the amount of diamond tip used can be reduced; an energy-saving for a cutting power can be achieved, and the amount of chips produced upon the cutting of the unnecessary object can be reduced.
- an apparatus for cutting off an unnecessary object deposited on a casting comprising a rotary device having a rotary shaft adapted to be rotated at a high speed, and a disk-shaped diamond tip saw mounted at a tip end of the rotary shaft and adapted to be rotated by the rotation of the rotary shaft to cut off the unnecessary object on the casting, so that the tip saw is rotated at a rotational speed of 4,000 rpm or more, whereby the amount of diamond tip used can be reduced; an energy-saving for a cutting power can be achieved, and the amount of chips produced upon the cutting of the unnecessary object can be reduced to decrease the useless amount of a material for the casting, thereby remarkably reducing the production cost for the casting and overcoming the disadvantage associated with the conventionally known technology.
- the thickness of the tip saw can be decreased by a value corresponding to an increment in rigidity of the tip saw, for example, to 2.5 mm from the range of 6 mm to 8 mm, thereby reducing the cost.
- FIG. 1 is a perspective view of an embodiment of a cutting-off apparatus according to the present invention.
- FIG. 2 is an enlarged sectional view of a portion of the apparatus shown in FIG. 1.
- FIG. 1 shows a cutting-off apparatus A according to the present invention.
- the cutting-off apparatus A includes a rotary device 1 such as a motor and a disk-shaped diamond tip saw 2 .
- the motor 1 (rotary device) includes a rotary shaft 3 having the disk-shaped diamond tip saw 2 mounted at its tip end 4 .
- the rotary shaft 3 of the motor 1 is rotated at a high speed by driving the motor 1
- the disk-shaped diamond tip saw 2 mounted at the tip end 4 of the rotary shaft 3 is also rotated at a high speed with the rotation of the rotary shaft 3 .
- the disk-shaped diamond tip saw 2 has a tip saw body 5 provided at its peripheral edge with a large number of tips 6 arranged in a circumferential direction, as shown in FIG. 2 which is an enlarged side view of a portion indicated by a in FIG. 1, and diamond blades 7 are mounted to the tips 6 , respectively.
- Each of the diamond blades 7 has a size of, for example, 4 mm ⁇ 4 mm ⁇ 1 mm and mounted to carbide portions 10 .
- the diamond tip saw 2 is rotated in more than 4000 rpm, preferably in the range of 4000 rpm to 10,000 rpm, by the rotation of rotating shaft 3 by a motor 1 , to cut-off and to remove an unnecessary object 9 deposited on a casting 8 , such as a cylinder head of the engine parts of a car, when casting 8 , such as aluminum alloy is produced, as illustrated in FIG. 1.
- a casting 8 such as a cylinder head of the engine parts of a car
- the diamond tip saw 2 rotated at the high speed has a rigidity remarkably increased by its own centrifugal force and a gyroscopic moment effect, and the thickness of the diamond tip saw 2 can be reduced by a value corresponding to the increment in the rigidity.
- the thickness of the tip saw is required to be on the order of 6 mm to 8 mm, but according to the present invention, when a gate having an area to be cut of 50 mm ⁇ 100 mm is cut at a cutting shaft rotational speed of 7,000 rpm and at a feed rate of 30 mm/sec, the thickness of the tip saw can be 2.5 mm.
- the amount of diamond tips used is decreased to 4 mm ⁇ 4 mm ⁇ 1 mm, and an energy-saving for a cutting power, i.e., a cutting power provided by the motor 1 shown in FIG. 1 is achieved, and the amount of chips produced from a cut portion 11 upon cutting of an unnecessary object 9 on a casting 8 is decreased.
- a cutting power i.e., a cutting power provided by the motor 1 shown in FIG. 1
- the amount of chips produced from a cut portion 11 upon cutting of an unnecessary object 9 on a casting 8 is decreased.
- Reference character 12 in FIG. 1 designates clamps 12 secured to a support plate 13 for clamping and retaining the casting 8 . Clamps 12 are also mounted to a support plate 13 of an opposed device (not shown) to clamp and retain the casting 8 from opposite sides.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
An apparatus A for cutting off an unnecessary object deposited on a casting includes a motor having a rotary shaft 3 adapted to be rotated at a high speed, and a disk-shaped diamond tip saw 2 mounted at a tip end 4 of the rotary shaft 3 and adapted to be rotated by the rotation of the rotary shaft 3 to cut off the unnecessary object 9 on the casting 8, so that the tip saw 2 is rotated at a rotational speed in a range of 6,000 rpm to 8,000 rpm. Thus, the rigidity of the diamond tip saw 2 rotated at the high speed is increased by a centrifugal force provided by the diamond tip saw 2 itself and a gyroscopic moment effect to reduce the thickness of the diamond tip saw 2 can be reduced by a value corresponding to an increment in rigidity of the tip saw 2, whereby the amount of diamond tips (diamond blades) used can be decreased; an energy-saving for a cutting power can be achieved, and the amount of chips produced upon the cutting of the unnecessary object can be reduced.
Description
- 1. Field of the Invention
- The present invention relates to an apparatus for cutting off an unnecessary object deposited on any of various castings such as automobile parts produced from an aluminum alloy or the like by a casting process, and particularly, to an apparatus for cutting off an unnecessary object, which includes a diamond tip saw for cutting off an unnecessary object such as a gate of a casting, and a rotary device such as a motor for rotating the tip saw. More particularly, the present invention relates to an apparatus for cutting off an unnecessary object deposited on a casting, which includes a diamond tip saw for cutting off an unnecessary object such as a gate deposited on a casting, and a rotary device such as a motor for rotating the tip saw at a high speed, wherein the amount of diamond tips used can be reduced; an energy-saving for a cutting power can be achieved, and the amount of chips produced upon the cutting of the unnecessary object can be reduced to decrease the useless amount of a material for the casting.
- 2. Description of the Related Art
- In general, various parts for an automobile, e.g., a cylinder head, a cylinder block, an intake manifold and the like are produced from an aluminum alloy by a casting process. A casting produced by such casting process has an unnecessary object such as a gate deposited thereon, and it is necessary to cut off the unnecessary object from the casting, thereby remarkably reducing the production cost for the casting.
- There is such a conventionally known cutting-off apparatus which includes a diamond tip saw mounted at a tip end of a rotary shaft of a rotary device such as a motor, so that the diamond tip saw is rotated at a high speed by driving the rotary device to cut off an unnecessary object deposited on a casting.
- In the conventional apparatus, the rotational speed of the diamond tip saw is in a range of 1,000 to 3,600 rpm, but in order to prevent the occurrence of a vibration during the cutting, the thickness of the tip saw is required to be on the order of 6 to 8 mm, if the diameter of the tip saw is on the order of 400 φ.
- The present inventors have found that if the rotational speed of the tip saw is increased to 4,000 rpm or more, an increase in rigidity of the tip saw is provided remarkably by a centrifugal force provided by the tip saw itself and a gyroscopic moment effect and as a result, the thickness of the tip saw can be decreased by a value corresponding to an increment in rigidity of the tip saw. Thus, the present invention has been accomplished from the above finding.
- Accordingly, it is an object of the present invention to provide an apparatus for cutting off an unnecessary object deposited on a casting, which includes a diamond tip saw for cutting off an unnecessary object such as a gate deposited on a casting, and a rotary device such as a motor for rotating the tip saw at a high speed, wherein the amount of diamond tip used can be reduced; an energy-saving for a cutting power can be achieved, and the amount of chips produced upon the cutting of the unnecessary object can be reduced.
- To achieve the above object, according to the present invention, there is provided an apparatus for cutting off an unnecessary object deposited on a casting, comprising a rotary device having a rotary shaft adapted to be rotated at a high speed, and a disk-shaped diamond tip saw mounted at a tip end of the rotary shaft and adapted to be rotated by the rotation of the rotary shaft to cut off the unnecessary object on the casting, so that the tip saw is rotated at a rotational speed of 4,000 rpm or more, whereby the amount of diamond tip used can be reduced; an energy-saving for a cutting power can be achieved, and the amount of chips produced upon the cutting of the unnecessary object can be reduced to decrease the useless amount of a material for the casting, thereby remarkably reducing the production cost for the casting and overcoming the disadvantage associated with the conventionally known technology.
- With the above arrangement, by increasing the rotational speed of the diamond tip saw to 4,000 rpm or more, an increase in rigidity of the diamond tip saw is provided remarkably by a centrifugal force provided by the tip saw itself and a gyroscopic moment effect and as a result, the thickness of the tip saw can be decreased by a value corresponding to an increment in rigidity of the tip saw, for example, to 2.5 mm from the range of 6 mm to 8 mm, thereby reducing the cost.
- The above and other objects, features and advantages of the invention will become apparent from the following description of the preferred embodiment taken in conjunction with the accompanying drawings.
- FIG. 1 is a perspective view of an embodiment of a cutting-off apparatus according to the present invention; and
- FIG. 2 is an enlarged sectional view of a portion of the apparatus shown in FIG. 1.
- The present invention will now be described by way of an embodiment with reference to FIGS.1 to 3.
- FIG. 1 shows a cutting-off apparatus A according to the present invention. The cutting-off apparatus A includes a rotary device1 such as a motor and a disk-shaped diamond tip saw 2. The motor 1 (rotary device) includes a
rotary shaft 3 having the disk-shaped diamond tip saw 2 mounted at its tip end 4. Therotary shaft 3 of the motor 1 is rotated at a high speed by driving the motor 1, and the disk-shaped diamond tip saw 2 mounted at the tip end 4 of therotary shaft 3 is also rotated at a high speed with the rotation of therotary shaft 3. - The disk-shaped
diamond tip saw 2 has a tip saw body 5 provided at its peripheral edge with a large number of tips 6 arranged in a circumferential direction, as shown in FIG. 2 which is an enlarged side view of a portion indicated by a in FIG. 1, anddiamond blades 7 are mounted to the tips 6, respectively. Each of thediamond blades 7 has a size of, for example, 4 mm×4 mm×1 mm and mounted tocarbide portions 10. - The
diamond tip saw 2 is rotated in more than 4000 rpm, preferably in the range of 4000 rpm to 10,000 rpm, by the rotation of rotatingshaft 3 by a motor 1, to cut-off and to remove anunnecessary object 9 deposited on acasting 8, such as a cylinder head of the engine parts of a car, when casting 8, such as aluminum alloy is produced, as illustrated in FIG. 1. - The diamond tip saw2 rotated at the high speed has a rigidity remarkably increased by its own centrifugal force and a gyroscopic moment effect, and the thickness of the
diamond tip saw 2 can be reduced by a value corresponding to the increment in the rigidity. More specifically, in a prior art cutting-off apparatus including a tip saw having a size on the order of 300 to 400 φ and a cutting shaft rotated at a rotational speed of 1,800 rpm, the thickness of the tip saw is required to be on the order of 6 mm to 8 mm, but according to the present invention, when a gate having an area to be cut of 50 mm×100 mm is cut at a cutting shaft rotational speed of 7,000 rpm and at a feed rate of 30 mm/sec, the thickness of the tip saw can be 2.5 mm. - By reducing the thickness of the tip saw to 2.5 mm from the range of 6 mm to 8 mm as described above, the amount of diamond tips used is decreased to 4 mm×4 mm×1 mm, and an energy-saving for a cutting power, i.e., a cutting power provided by the motor1 shown in FIG. 1 is achieved, and the amount of chips produced from a cut portion 11 upon cutting of an
unnecessary object 9 on acasting 8 is decreased. This can contribute to a reduction in production cost of the casting.Reference character 12 in FIG. 1 designatesclamps 12 secured to asupport plate 13 for clamping and retaining thecasting 8.Clamps 12 are also mounted to asupport plate 13 of an opposed device (not shown) to clamp and retain thecasting 8 from opposite sides. - Although the embodiments of the present invention have been described in detail, it will be understood that the present invention is not limited to the above-described embodiments, and various modifications in design may be made without departing from the spirit and scope of the invention defined in claims.
Claims (1)
1. An apparatus for cutting off an unnecessary object deposited on a casting, comprising a rotary device having a rotary shaft adapted to be rotated at a high speed, and a disk-shaped diamond tip saw mounted at a tip end of the rotary shaft and adapted to be rotated by the rotation of the rotary shaft to cut off the unnecessary object on the casting, so that the tip saw is rotated at a rotational speed of 4,000 rpm or more, whereby the amount of diamond tip used can be reduced; an energy-saving for a cutting power can be achieved, and the amount of chips produced upon the cutting of the unnecessary object can be reduced to decrease the useless amount of a material for the casting.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/737,919 US20040132394A1 (en) | 2001-01-11 | 2003-12-18 | Cutting-off apparatus |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001003355A JP2002206278A (en) | 2001-01-11 | 2001-01-11 | Work method for balcony and balcony construction |
JP2001-003355 | 2001-05-28 | ||
JP2001-300250 | 2001-09-28 | ||
JP2001300250A JP2003103415A (en) | 2001-09-28 | 2001-09-28 | Device for cutting and removing unnecessary materials attached to casting |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/737,919 Division US20040132394A1 (en) | 2001-01-11 | 2003-12-18 | Cutting-off apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
US20020174758A1 true US20020174758A1 (en) | 2002-11-28 |
Family
ID=26607512
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/090,729 Abandoned US20020174758A1 (en) | 2001-01-11 | 2002-03-06 | Cutting-off apparatus |
US10/737,919 Abandoned US20040132394A1 (en) | 2001-01-11 | 2003-12-18 | Cutting-off apparatus |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/737,919 Abandoned US20040132394A1 (en) | 2001-01-11 | 2003-12-18 | Cutting-off apparatus |
Country Status (3)
Country | Link |
---|---|
US (2) | US20020174758A1 (en) |
EP (1) | EP1254732B1 (en) |
KR (1) | KR20020090842A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10220150B2 (en) * | 2014-02-10 | 2019-03-05 | Mitsubishi Gas Chemical Company, Inc. | Manufacturing method of syringe barrel |
CN113649552A (en) * | 2021-08-05 | 2021-11-16 | 大亚车轮制造有限公司 | Simple riser cutting device for aluminum alloy box body casting and using method of simple riser cutting device |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2518939A (en) * | 1946-10-21 | 1950-08-15 | Arnold R Ross | Portable circular saw for cutting plaster of paris casts |
US3327696A (en) * | 1964-10-09 | 1967-06-27 | Howard Aiken Ind | Saw stabilizing means and method |
US4120224A (en) * | 1977-08-17 | 1978-10-17 | Steenberg Wade M Van | Saw blade mounting arrangement |
US4145940A (en) * | 1978-01-26 | 1979-03-27 | Woloveke Eugene L | Brake apparatus for a motor driven saw blade |
EP0083380A1 (en) * | 1981-12-30 | 1983-07-13 | Sankyo Diamond Industrial Co., Ltd. | Diamond saw |
WO1988004970A1 (en) * | 1986-12-24 | 1988-07-14 | Gebrüder Linck Maschinenfabrik "Gatterlinck" Gmbh | Circular saw head |
SE8701468L (en) * | 1987-04-15 | 1988-10-09 | Le Lesotekhnicheskaya Akademia | SAAGKLINGA |
US4979417A (en) * | 1989-09-13 | 1990-12-25 | California Saw & Knife Works | Rotating saw blade having improved critical vibrational speed |
US5351595A (en) * | 1991-12-20 | 1994-10-04 | Vermont American Corporation | Thin kerf circular saw blade |
SE470397B (en) * | 1992-07-06 | 1994-02-14 | Sandvik Ab | Saw blades with radial slots and arcuate recesses for vibration damping |
US5497684A (en) * | 1994-02-22 | 1996-03-12 | Martin; Richard R. | Method for reducing the kerf width made by a circular saw blade |
US5486126A (en) * | 1994-11-18 | 1996-01-23 | Micron Display Technology, Inc. | Spacers for large area displays |
US5555788A (en) * | 1995-03-29 | 1996-09-17 | Credo Tool Company | Saw blade |
US5974674A (en) * | 1998-07-01 | 1999-11-02 | Kelly; Daniel E. | Undercut saw |
JP2000246651A (en) * | 1999-02-26 | 2000-09-12 | Toho Titanium Co Ltd | Diamond saw blade |
US6691596B1 (en) * | 2000-02-29 | 2004-02-17 | Irwin Industrial Tool Company | Circular saw blade for cutting fiber cement materials |
US6739227B2 (en) * | 2000-06-27 | 2004-05-25 | Robert Lindsay Thompson | Apparatus and method for providing an enhanced metal cutting saw blade |
-
2002
- 2002-01-04 EP EP20020250051 patent/EP1254732B1/en not_active Expired - Lifetime
- 2002-01-19 KR KR1020020003149A patent/KR20020090842A/en active Search and Examination
- 2002-03-06 US US10/090,729 patent/US20020174758A1/en not_active Abandoned
-
2003
- 2003-12-18 US US10/737,919 patent/US20040132394A1/en not_active Abandoned
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10220150B2 (en) * | 2014-02-10 | 2019-03-05 | Mitsubishi Gas Chemical Company, Inc. | Manufacturing method of syringe barrel |
CN113649552A (en) * | 2021-08-05 | 2021-11-16 | 大亚车轮制造有限公司 | Simple riser cutting device for aluminum alloy box body casting and using method of simple riser cutting device |
Also Published As
Publication number | Publication date |
---|---|
EP1254732A1 (en) | 2002-11-06 |
KR20020090842A (en) | 2002-12-05 |
EP1254732B1 (en) | 2011-10-05 |
US20040132394A1 (en) | 2004-07-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SHIGA YAMASHITA CO., LTD., JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HARIKAWA, TAKAO;REEL/FRAME:012680/0583 Effective date: 20020121 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |