GB2405365A - Cutting tool - Google Patents

Cutting tool Download PDF

Info

Publication number
GB2405365A
GB2405365A GB0415676A GB0415676A GB2405365A GB 2405365 A GB2405365 A GB 2405365A GB 0415676 A GB0415676 A GB 0415676A GB 0415676 A GB0415676 A GB 0415676A GB 2405365 A GB2405365 A GB 2405365A
Authority
GB
United Kingdom
Prior art keywords
cutting
tool
tooth
teeth
fine
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.)
Granted
Application number
GB0415676A
Other versions
GB2405365B (en
GB0415676D0 (en
Inventor
Michael Gregory
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cromwell Group Holdings Ltd
Original Assignee
Cromwell Group Holdings Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to GB0320105A priority Critical patent/GB0320105D0/en
Application filed by Cromwell Group Holdings Ltd filed Critical Cromwell Group Holdings Ltd
Publication of GB0415676D0 publication Critical patent/GB0415676D0/en
Publication of GB2405365A publication Critical patent/GB2405365A/en
Application granted granted Critical
Publication of GB2405365B publication Critical patent/GB2405365B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C5/00Milling-cutters
    • B23C5/02Milling-cutters characterised by the shape of the cutter
    • B23C5/10Shank-type cutters, i.e. with an integral shaft
    • B23C5/1009Ball nose end mills
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B51/00Tools for drilling machines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C5/00Milling-cutters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27GACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G13/00Cutter blocks; Other rotary cutting tools
    • B27G13/002Rotary tools without insertable or exchangeable parts, except the chucking part
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C3/00Dental tools or instruments
    • A61C3/02Tooth drilling or cutting instruments; Instruments acting like a sandblast machine
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C2220/00Details of milling processes
    • B23C2220/60Roughing
    • B23C2220/605Roughing and finishing

Abstract

A rotary cutting tool or burr (figure 1,10) with a shank for engagement with a power tool and a cylindrical body (figure 1,14) which can be used in the manufacturing sector, medical, dentistry and veterinary professions. The cylindrical body (figure 1,14) has an outer cutting surface provided with a plurality of sets 16, 18, 20 of integral first and second cutting teeth 16, 20 that extend the length of the body (figure 1, 14). The first cutting teeth provide a coarse cut 20 and said second teeth 16 provide a fine cut. Each set of teeth has a coarse cutting tooth as a leading tooth 20 and a fine cutting tooth 16 as a trailing tooth. The cutting teeth 16, 18, 20 may also extend helically along said body (figure 1, 14).

Description

- 1 - 2405365 Cutting Tool The present invention relates to a cutting tool
and particularly to a cutting tool for use with a power tool.
Rotary cutting tools, known as burrs, are used for machining various types of ferrous and non-ferrous metals as well as materials such as fibre glass, hard rubber, plastics, ceramics and hardwood. Three types of rotary cutter are generally available, these being for coarse, standard and fine machining. The to coarse rotary cutting tool produces a rough cut which can be effected quite rapidly whilst the fine cutting tool produces a fine cut which is effected relatively slowly but produces a fine surface as opposed to a roughened surface. The intermediate cutting tool is used to provide an intermediate step between the coarse cut and the fine cut, where necessary.
The present invention seeks to provide an improved rotary cutting tool.
Accordingly, the present invention provides a rotary cutting tool having a shank for engagement with a power tool, and a generally cylindrical body; wherein: said body has an outer, cutting surface provided with a plurality of sets of integral first and second cutting teeth extending the length of said body; said first cutting teeth are adapted to provide a coarse cut and said second cutting teeth are adapted to provide a fine cut; and each said set of cutting teeth has a coarse cutting tooth as a leading tooth and a fine cutting tooth as a trailing tooth.
Preferably, said sets are equi-angularly spaced about said cuttingsurface.
In a preferred embodiment of the invention each said cutting tooth extends helically along said body, and said cutting teeth extend parallel with one another along said body. - 2
Preferably, each tooth in a set extends radially of the body by substantially the same amount.
The present invention is further described hereinafter, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a side elevation of a preferred form of rotary cutting tool according to the present invention; to Figure 2 is an end elevation of the cutting tool of Figure 1 in the direction of arrow A of Figure 1; and Figure 3 is an opposite end elevation of the end cutting tool of Figure 1 in the direction of arrow B. Referring to the drawings, these show a preferred form of cutting tool or burr 10 which has a shank 12 for engagement in the chuck of a power tool. The tool is used primarily for cutting wood, metals, composites and the like. The cutting tool has a cutting head 14 which is provided with a plurality of cutting teeth 16, 18, 20 which are arranged in a spiral formation in the radially outer surface of the cutting tool head 14.
As can be seen from Figures 2 and 3, the cutting teeth are arranged in groups or sets of three, each group being equi-angularly spaced about the periphery of the cutting tool head 14.
In addition, each set of teeth comprises three cutting teeth, 16, 18, 20 with the leading cutting tooth 20 being a coarse cutting tooth and the trailing cutting tooth 16 being a fine cutting tooth. The intermediate cutting tooth 18 may be a fine cutting tooth or a standard cutting tooth, which provides a cut intermediate the coarse cut and the fine cut provided by the teeth 20, 16. - 3
As can be seen from Figure 3 each of the cutting teeth 16, 18, 20 makes a respective angle off, a2, oc3 with the radius of the cutting tool head 14 and in addition each tooth has a cutting depth, d1, d2, d3. Each of these angles and cutting depths can be varied to provide a desired form of cutting action and finished cut in the material being machined.
In use, the cutting tooth rotates in the direction of arrow C as seen in Figures 2 and 3.
As can be seen from Figure 1, the actual end of the cutting tool remote from the shank 12 has a part spherical or curved end with the cutting teeth 16, 18, 20 meeting at the actual centre of the cutting tool. This allows the head of the cutting tool also to be used for milling and grinding.
The cutting tool is conveniently made of high speed steel, tungsten carbide or other suitable material.
The advantage of the cutting tool described with reference to the drawings is that in one pass of the tool it can remove a relatively large amount of material and also provide a fine finish to the material being cut. This avoids the need for separate passes with separate coarse and fine toothed burrs.
Although the preferred form of tool has been described with equiangularly spaced sets of teeth, the sets need not be equi-angularly spaced and could be spaced about the axis of the tool at any suitable desired angles. In addition, whilst each set of teeth is described above as having three teeth, this number may be varied and indeed different sets of teeth on the same tool may have different numbers of teeth. - 4
Finally, the number of fine and coarse cutting teeth in each set may be varied from that described.
Although the tool has been described as primarily being used in the manufacturing sector, it can also be used in the medical, dentistry and veterinary profession on materials such as bone and teeth.
The shape of the tool may also be varied to include spherical tools and other shapes. - 5

Claims (6)

  1. Claims 1 A rotary cutting tool having a shank for engagement with a power
    tool, and a generally cylindrical body; s wherein: said body has an outer, cutting surface provided with a plurality of sets of integral first and second cutting teeth extending the length of said body; said first cutting teeth are adapted to provide a coarse cut and said second cutting teeth are adapted to provide a fine cut; and each said set of cutting teeth has a coarse cutting tooth as a leading tooth and a fine cutting tooth as a trailing tooth.
  2. 2 A tool as claimed in claim 1 wherein said sets are equi-angularly spaced about said cuttingsurface.
  3. 3 A tool as claimed in claim 1 or 2 wherein each said cutting tooth extends helically along said body.
  4. 4 A tool as claimed in claim 1, 2 or 3 wherein said cutting teeth extend parallel with one another along said body.
  5. A tool as claimed in any of claims 1 to 4 wherein each tooth in a set extends radially of the body by substantially the same amount.
  6. 6 A rotary cutting tool substantially as hereinbefore described with reference to the accompanying drawings.
GB0415676A 2003-08-28 2004-07-14 Cutting tool Expired - Fee Related GB2405365B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0320105A GB0320105D0 (en) 2003-08-28 2003-08-28 Cutting tool

Publications (3)

Publication Number Publication Date
GB0415676D0 GB0415676D0 (en) 2004-08-18
GB2405365A true GB2405365A (en) 2005-03-02
GB2405365B GB2405365B (en) 2007-05-09

Family

ID=28686437

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0320105A Ceased GB0320105D0 (en) 2003-08-28 2003-08-28 Cutting tool
GB0415676A Expired - Fee Related GB2405365B (en) 2003-08-28 2004-07-14 Cutting tool

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0320105A Ceased GB0320105D0 (en) 2003-08-28 2003-08-28 Cutting tool

Country Status (1)

Country Link
GB (2) GB0320105D0 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1872739A1 (en) * 2006-06-27 2008-01-02 Straumann Holding AG Dental implantology drill
EP1958589A1 (en) * 2007-02-15 2008-08-20 Acurata G + K Mahnhardt Dental e.K. Dental milling cutter
EP1971456A2 (en) 2006-01-04 2008-09-24 Sgs Tool Company Rotary cutting tool
EP2404689A1 (en) * 2010-07-07 2012-01-11 Gebr. Brasseler GmbH & Co. KG Dental tool
CN102328127A (en) * 2011-09-22 2012-01-25 山东理工大学 Superfine tapered ball end milling cutter
WO2012127171A1 (en) * 2011-03-22 2012-09-27 Renault S.A.S. Milling/surfacing method and device
US20140003873A1 (en) * 2011-02-16 2014-01-02 Hitachi Tool Engineering, Ltd. End mill for cutting of high-hardness materials
US9597738B2 (en) 2011-03-22 2017-03-21 Renault S.A.S. Milling/surfacing method and device
CN109128325A (en) * 2018-09-27 2019-01-04 基准精密工业(惠州)有限公司 Ball knife
EP3782752A1 (en) * 2019-08-05 2021-02-24 Gühring Kg End mill

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109352838A (en) * 2018-09-27 2019-02-19 基准精密工业(惠州)有限公司 Round nose knife
CN109262863A (en) * 2018-09-27 2019-01-25 基准精密工业(惠州)有限公司 Forming cutter

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2082947A (en) * 1980-09-02 1982-03-17 Hougen Everett D Annular hole cutter
GB2106018A (en) * 1981-09-21 1983-04-07 Hougen Everett D Annular hole cutter
DE3243522A1 (en) * 1982-11-25 1984-05-30 Lukas-Erzett Vereinigte Schleif- und Fräswerkzeugfabriken, 5250 Engelskirchen Cutting tool
SU1143527A1 (en) * 1983-07-15 1985-03-07 Всесоюзный Проектно-Конструкторский Институт Технологии Электротехнического Производства Cutting tool
DE3700754A1 (en) * 1986-01-16 1987-07-23 Alps Electric Co Ltd End milling cutter
DD273791A1 (en) * 1988-07-08 1989-11-29 Werkzeugind Forschzent MILLING MACHINE, IN PARTICULAR ROLLING MACHINE, FOR SHRINDING AND FINISHING
EP1243366A1 (en) * 2001-03-22 2002-09-25 Busch & Co.KG Milling tool

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2082947A (en) * 1980-09-02 1982-03-17 Hougen Everett D Annular hole cutter
GB2106018A (en) * 1981-09-21 1983-04-07 Hougen Everett D Annular hole cutter
DE3243522A1 (en) * 1982-11-25 1984-05-30 Lukas-Erzett Vereinigte Schleif- und Fräswerkzeugfabriken, 5250 Engelskirchen Cutting tool
SU1143527A1 (en) * 1983-07-15 1985-03-07 Всесоюзный Проектно-Конструкторский Институт Технологии Электротехнического Производства Cutting tool
DE3700754A1 (en) * 1986-01-16 1987-07-23 Alps Electric Co Ltd End milling cutter
DD273791A1 (en) * 1988-07-08 1989-11-29 Werkzeugind Forschzent MILLING MACHINE, IN PARTICULAR ROLLING MACHINE, FOR SHRINDING AND FINISHING
EP1243366A1 (en) * 2001-03-22 2002-09-25 Busch & Co.KG Milling tool

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1971456A2 (en) 2006-01-04 2008-09-24 Sgs Tool Company Rotary cutting tool
EP2138125A1 (en) * 2006-06-27 2009-12-30 Straumann Holding AG dental implantology drill
EP1872739A1 (en) * 2006-06-27 2008-01-02 Straumann Holding AG Dental implantology drill
EP2138125B2 (en) 2006-06-27 2020-01-15 Straumann Holding AG dental implantology drill
US10456144B2 (en) 2006-06-27 2019-10-29 Straumann Holding Ag Bur for dental implantology
DE202008018364U1 (en) 2007-02-15 2013-04-22 Acurata Gmbh & Co. Kg dental bur
EP1958589A1 (en) * 2007-02-15 2008-08-20 Acurata G + K Mahnhardt Dental e.K. Dental milling cutter
DE102007009304B4 (en) * 2007-02-15 2011-11-10 Acurata G + K Mahnhardt Dental E.K. dental bur
EP2404689A1 (en) * 2010-07-07 2012-01-11 Gebr. Brasseler GmbH & Co. KG Dental tool
US8672679B2 (en) 2010-07-07 2014-03-18 Gebr. Brasseler Gmbh & Co. Kg Dental tool
DE102010026334B4 (en) * 2010-07-07 2014-10-23 Gebr. Brasseler Gmbh & Co. Kg dental tool
US20140003873A1 (en) * 2011-02-16 2014-01-02 Hitachi Tool Engineering, Ltd. End mill for cutting of high-hardness materials
US9421624B2 (en) * 2011-02-16 2016-08-23 Hitachi Tool Engineering, Ltd. End mill for cutting of high-hardness materials
FR2972948A1 (en) * 2011-03-22 2012-09-28 Renault Sa METHOD AND DEVICE FOR MILLING SURFACING
US9597738B2 (en) 2011-03-22 2017-03-21 Renault S.A.S. Milling/surfacing method and device
WO2012127171A1 (en) * 2011-03-22 2012-09-27 Renault S.A.S. Milling/surfacing method and device
CN102328127B (en) * 2011-09-22 2013-04-10 山东理工大学 Superfine tapered ball end milling cutter
CN102328127A (en) * 2011-09-22 2012-01-25 山东理工大学 Superfine tapered ball end milling cutter
CN109128325A (en) * 2018-09-27 2019-01-04 基准精密工业(惠州)有限公司 Ball knife
EP3782752A1 (en) * 2019-08-05 2021-02-24 Gühring Kg End mill

Also Published As

Publication number Publication date
GB0415676D0 (en) 2004-08-18
GB2405365B (en) 2007-05-09
GB0320105D0 (en) 2003-10-01

Similar Documents

Publication Publication Date Title
GB2405365A (en) Cutting tool
AU2013257025B2 (en) Dental milling tool, and milling method for producing dental prosthesis parts
US7090442B2 (en) Shaper router and method
TWI476072B (en) Cutting tool and method for implementing the same
JP6039089B2 (en) End mill cutter for machining of fiber reinforced materials such as carbon fiber reinforced plastic
MX2008008597A (en) Rotary cutting tool.
EP1807233A1 (en) Helical flute end mill with multi-section cutting edge
US20050089383A1 (en) Deburring tool
CN108526552B (en) Twist drill with unequal groove spacing and unequal relief angle
JP2004074394A5 (en) Radius end mill and manufacturing method of forging die
EP1559493A3 (en) Ballnose end mill
RU2007146363A (en) PREPARATION FOR THE MANUFACTURE OF THE INSTRUMENT USED IN THE FIELD OF ENDODONTIA AND THE METHOD OF MANUFACTURE OF SUCH INSTRUMENT
CN108472111B (en) Method for manufacturing a dental object
RU2002118112A (en) HAND FOR MACHINING WITH HIGH PRECISION INNER grooves
CN1717206A (en) Endodontic instruments with pilot tips and parabolic cutting flutes
JP2006109917A (en) Rotating work tool
WO2009087339A1 (en) Router cutter
JP3903717B2 (en) Tapered hole machining method and tapered hole machining tool
JP6829360B1 (en) Cutting / polishing bar
WO2017042158A1 (en) Method and tool for machining a blisk
WO2014129517A1 (en) Rotating tool
JP2632388B2 (en) Internal thread cutting tool
JP2021088008A (en) High hardness cutting tool
JP5635838B2 (en) Core drill for punching holes
CN114867574A (en) Drilling tool comprising a stepped drill bit

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20100714