GB2364007A - Multi-fluted milling cutter - Google Patents

Multi-fluted milling cutter Download PDF

Info

Publication number
GB2364007A
GB2364007A GB0110829A GB0110829A GB2364007A GB 2364007 A GB2364007 A GB 2364007A GB 0110829 A GB0110829 A GB 0110829A GB 0110829 A GB0110829 A GB 0110829A GB 2364007 A GB2364007 A GB 2364007A
Authority
GB
United Kingdom
Prior art keywords
cutting
milling cutter
tool
flutes
rotary cutting
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.)
Withdrawn
Application number
GB0110829A
Other versions
GB0110829D0 (en
Inventor
Richard Church
Christopher Peter Ralph Hill
James Rodney Watkins
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.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
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 claimed from GBGB0011215.1A external-priority patent/GB0011215D0/en
Application filed by Rolls Royce PLC filed Critical Rolls Royce PLC
Priority to GB0110829A priority Critical patent/GB2364007A/en
Publication of GB0110829D0 publication Critical patent/GB0110829D0/en
Publication of GB2364007A publication Critical patent/GB2364007A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B23C5/10—Shank-type cutters, i.e. with an integral shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2210/00—Details of milling cutters
    • B23C2210/32—Details of teeth
    • B23C2210/326—File like cutting teeth, e.g. the teeth of cutting burrs

Landscapes

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

Abstract

A rotary cutting tool 2 formed with a large number of helical cutting teeth 6, preferably more than 20 and up to over 100, where the ratio of the number of cutting teeth to tool diameter in mm is at least 1.5 and is particularly effective when used in conjunction with the supply of high pressure coolants.

Description

2364007 MULTI-FLUTED MILLING CUTTER The invention concerns rotary cutting
tools.
In particular the invention relates to a milling cutter having an increased number of cutting flutes formed on the cutter.
Acccrding to the present invention a rotary cutting tool is provided with at least twenty helical cutting teeth.
A rotary cutting tool of the kind referred to may have up to i 00 helical cutting teeth and may be even more Expressed in another format, a rotary cutting tool in accordance with the present invention has a ratio of the number of cutting teeth to tool diameter in millimetres of about 1 5:1 or higher.
The invention will now be described in more detail with reference to a milling cutter depicted in Figures 1 and 2 of the accompanying illustration which possesses fifty cutting teeth.
The milling cutter shown has an essentially conventional configuration comprising a hardened steel tool 2 of about 16 mm diameter circular cross-section Smooth sided along most of its length 4, towards its cutting end 6 it is formed with a multiplicity of helically formed cutting flutes The particular cutter shown has 50 cutting flutes, but it has been found beneficial for milling a variety of materials (metals and metal alloys) to use cutters formed with a multiplicity of cutting flutes the number of which are in the range of 20 up to 100 depending upon the material.
It is envisaged that 100 is not a strict upper limit for the number of flutes and that still higher numbers may be useful Further improvements which may assist include the use of high pressure coolant and low friction coatings The rotary cutting tool being described is found to be particularly effective when used in conjunction with the high speed milling method described in our co-pending GB Patent Application No 0011315 9 (priority application).
The depth of the flutes, helix geometry and cutting parameters are also important parameters The number of flutes and the depth of each for swarf evacuation appears to have an optimum number for each material being cut Unless the milling cutter is used for slotting, very deep flutes are not essential and shallower flutes means that the number of cutting helixes can be higher However, it also means that each cut is shallower A reasonable radial depth of cut needs to be maintained to maintain a reasonable metal removal rate Some metals tend to form chips or scallops of a characteristic size which may be used as an indicator The depth of cut, the number of flutes, the speed of cutter rotation all combine to yield the material removal rate.
Coolant pressure, particularly high coolant pressure delivery at tens of bar pressure, and cutter coatings also make significant contributions to milling cutter overall efficiency.
The principles of the invention may also be extended to include drilling tools so that a drill may be formed having not two cutting helixes, as in conventional drills, but having a much larger number at least twenty or so cutting helixes Also the invention may be applied to all types of shaped cutters for example: side mills, end mills, ball end cutters and formed cutters etc The cutting tool illustrated in the drawings is a side mill, those familiar with the art will be aware of the differences between this and the other kinds of tool mentioned.

Claims (4)

1 A rotary cutting tool formed with at least twenty helical cutting teeth.
2 A rotary cutting tool as claimed in claim 1 formed with a multiplicity of cutting teeth in the range of about 20 to at least 100.
3 A rotary cutting tool as claimed in either claim 1 or claim 2 wherein the ratio of the number of cutting teeth to tool diameter in millimetres is about 1 5:1 or higher.
4 A rotary cutting tool substantially as hereinbefore described with reference to the accompanying drawings.
GB0110829A 2000-05-10 2001-05-03 Multi-fluted milling cutter Withdrawn GB2364007A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0110829A GB2364007A (en) 2000-05-10 2001-05-03 Multi-fluted milling cutter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0011215.1A GB0011215D0 (en) 2000-05-10 2000-05-10 Multi-fluted milling cutter
GB0110829A GB2364007A (en) 2000-05-10 2001-05-03 Multi-fluted milling cutter

Publications (2)

Publication Number Publication Date
GB0110829D0 GB0110829D0 (en) 2001-06-27
GB2364007A true GB2364007A (en) 2002-01-16

Family

ID=26244238

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0110829A Withdrawn GB2364007A (en) 2000-05-10 2001-05-03 Multi-fluted milling cutter

Country Status (1)

Country Link
GB (1) GB2364007A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003086689A1 (en) * 2002-04-08 2003-10-23 Third Wave Systems High-frequency tooth pass cutting system
WO2006014711A1 (en) * 2004-07-22 2006-02-09 Third Wave Systems High-frequency tooth pass cutting device and method
FR2946551A1 (en) * 2009-06-10 2010-12-17 Snecma Rotary tool for machining hardness material e.g. ceramic matrix composite, in machine tool e.g. milling machine, has cutting surface consisting set of edges distributed on circumference of tool in regular manner
WO2012172710A1 (en) 2011-06-17 2012-12-20 日立ツール株式会社 Multi-edge endmill
US9687921B2 (en) 2006-03-28 2017-06-27 Precicarb Carbide cutting tool and method of making such a tool

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB911658A (en) * 1960-02-10 1962-11-28 Svenska Tandsticks Aktiebolage Improvements in and relating to methods and apparatus for making fold lines in fibrous material
GB1088232A (en) * 1964-01-16 1967-10-25 Giddings & Lewis Machine tool power drawbolt
DE3243522A1 (en) * 1982-11-25 1984-05-30 Lukas-Erzett Vereinigte Schleif- und Fräswerkzeugfabriken, 5250 Engelskirchen Cutting tool
FR2635478A1 (en) * 1988-08-19 1990-02-23 Chasset Jean Pierre Rotary cutting tool for surfacing and grooving, of the milling cutter type
JPH09300119A (en) * 1996-05-16 1997-11-25 Toyota Motor Corp Tool for cutting

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB911658A (en) * 1960-02-10 1962-11-28 Svenska Tandsticks Aktiebolage Improvements in and relating to methods and apparatus for making fold lines in fibrous material
GB1088232A (en) * 1964-01-16 1967-10-25 Giddings & Lewis Machine tool power drawbolt
DE3243522A1 (en) * 1982-11-25 1984-05-30 Lukas-Erzett Vereinigte Schleif- und Fräswerkzeugfabriken, 5250 Engelskirchen Cutting tool
FR2635478A1 (en) * 1988-08-19 1990-02-23 Chasset Jean Pierre Rotary cutting tool for surfacing and grooving, of the milling cutter type
JPH09300119A (en) * 1996-05-16 1997-11-25 Toyota Motor Corp Tool for cutting

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003086689A1 (en) * 2002-04-08 2003-10-23 Third Wave Systems High-frequency tooth pass cutting system
WO2006014711A1 (en) * 2004-07-22 2006-02-09 Third Wave Systems High-frequency tooth pass cutting device and method
JP2008507418A (en) * 2004-07-22 2008-03-13 サード ウェイヴ システムズ Cutting device and method with high blade passing frequency
US9687921B2 (en) 2006-03-28 2017-06-27 Precicarb Carbide cutting tool and method of making such a tool
FR2946551A1 (en) * 2009-06-10 2010-12-17 Snecma Rotary tool for machining hardness material e.g. ceramic matrix composite, in machine tool e.g. milling machine, has cutting surface consisting set of edges distributed on circumference of tool in regular manner
WO2012172710A1 (en) 2011-06-17 2012-12-20 日立ツール株式会社 Multi-edge endmill
CN103764326A (en) * 2011-06-17 2014-04-30 日立工具股份有限公司 Multi-edge endmill
CN103764326B (en) * 2011-06-17 2015-12-16 日立工具股份有限公司 Multiflute end mill
US9579734B2 (en) 2011-06-17 2017-02-28 Mitsubishi Hitachi Tool Engineering, Ltd. Multi-flute endmill

Also Published As

Publication number Publication date
GB0110829D0 (en) 2001-06-27

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)