EP2251164B1 - Zerspanungswerkzeug - Google Patents

Zerspanungswerkzeug Download PDF

Info

Publication number
EP2251164B1
EP2251164B1 EP10004772.9A EP10004772A EP2251164B1 EP 2251164 B1 EP2251164 B1 EP 2251164B1 EP 10004772 A EP10004772 A EP 10004772A EP 2251164 B1 EP2251164 B1 EP 2251164B1
Authority
EP
European Patent Office
Prior art keywords
cutting
projection
chipping tool
projections
tool according
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.)
Active
Application number
EP10004772.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2251164A1 (de
Inventor
Oliver Galli
Ewald Westfal
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.)
Ledermann GmbH and Co KG
Original Assignee
Ledermann GmbH and Co KG
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
Application filed by Ledermann GmbH and Co KG filed Critical Ledermann GmbH and Co KG
Priority to PL10004772T priority Critical patent/PL2251164T3/pl
Publication of EP2251164A1 publication Critical patent/EP2251164A1/de
Application granted granted Critical
Publication of EP2251164B1 publication Critical patent/EP2251164B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
    • B27B33/20—Edge trimming saw blades or tools combined with means to disintegrate waste
    • 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
    • B23D61/021—Types of set; Variable teeth, e.g. variable in height or gullet depth; Varying pitch; Details of gullet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
    • B27B33/02—Structural design of saw blades or saw teeth
    • B27B33/08—Circular saw blades

Definitions

  • the invention relates to the use of a cutting tool for formatting plates, in particular of a wood-like material having the features according to the preamble of claim 1.
  • a cutting tool for formatting plates in particular of a wood-like material having the features according to the preamble of claim 1.
  • Such a use is in DE10107881 disclosed.
  • Sheets of wood-like materials such as chipboard or the like are machined with rotary driven cutting tools and brought into shape.
  • One step here is the formatting, in which in particular straight edges are to be produced cleanly and free from spalling by means of a suitable cutting tool.
  • Such cutting tools comprise a base body, on the circumference of cutting teeth are arranged, wherein the cutting teeth each have a peripheral edge and a relative to the axis of rotation in the axial direction over the base body protruding, adjacent to the peripheral cutting edge cutting edge.
  • the cutting edges act both on the peripheral side and on the end face facing the workpiece with the aim of achieving the cleanest possible cutting surface.
  • the DE 10 2004 012 619 A1 discloses yet another tool having a base body and cutting teeth having a first cutting projection and a second cutting projection.
  • the tool is used to make drills in drills, with only the first cutting protrusions in use.
  • the second cutting projections stand out functionally in the axial direction over the body. They are kept ready only as a replacement for worn first cutting projections and brought into operation position by rotated assembly of the inserts as needed.
  • the invention has for its object to provide a cutting tool for use for formatting plates such that the quality of cut is improved and maintained over a longer life.
  • the use of a tool in which the cutting teeth radially on the inside of the axially projecting cutting projection at least a second, preferably also at least one third in the axial direction over an end face of the main body protruding cutting projection.
  • the radially inner cutting projection is offset relative to the radially outer adjacent cutting projection in the axial direction and in particular set back.
  • the radially inner and radially outer cutting projections support each other. Individual chips that are not cut clean by the radially outer cutting projections are finally separated cleanly by the radially inner cutting projections and vice versa. This mutual support effect is maintained even with the onset of wear, so that the life of the cutting tool is increased.
  • the axial offset between the radially outer and radially inner cutting projections causes first the axially further projecting cutting projections are used primarily. Thus, they are subject to the usual wear and tear, while the more recessed cutting projections are less loaded and have a later onset wear. With progressive wear of the particular radially outer cutting projections come the set back, here radially inner cutting projections increasingly used.
  • the cutting projections of a single cutting tooth lie on a straight line which is inclined at an angle with respect to a radial direction perpendicular to the axis of rotation.
  • the angle is preferably in a range of 0.5 ° to 2.0 ° inclusive, and more preferably about 1.0 °.
  • the cutting projections have axially outer tips.
  • the tips are formed asymmetrically.
  • the cutting projections have a contour with a rounded waveform. Both embodiments lead to a clean, outbreak-free cutting result with significantly extended service life.
  • the peripheral cutting edge simultaneously forms the radially outermost, axially projecting cutting projection by means of its corner projecting in the axial direction.
  • a chamfer is arranged between the radially outer, axially projecting cutting projection and the peripheral cutting edge.
  • the chamfer reduces the impact sensitivity of the cutting edge. The risk of cutouts in the cutting edge is reduced, which ensures the quality of the cut surface with higher reliability.
  • To further improve the cutting result contributes to an embodiment in which the peripheral edge is inclined in the direction of the cutting projection to the axis of rotation.
  • Fig. 1 shows a cross-sectional view of a first embodiment of a cutting tool 1 according to the invention for wood-like materials.
  • the cutting tool in the embodiment according to the invention can also be used for other materials, in particular for non-ferrous metals, plastics, plasterboard, fiber composites or the like.
  • the cutting tool 1 is provided in the present embodiment for the formatting of plates, in particular chipboard and is for this purpose driven about a rotation axis 2.
  • the cutting tool 1 comprises a substantially circular disk-shaped base body 3, on whose circumference 4 a plurality of cutting teeth 5 is in particular evenly distributed.
  • the cutting teeth 5 are arranged on the circumference 4 of the base body 3 in such a way that they partially protrude beyond an associated end face 14 of the base body 3 in the axial direction predetermined by the rotation axis 2.
  • the cutting tool 1 is moved in a plane perpendicular to the axis of rotation 2 radial direction 11 relative to the workpiece, not shown.
  • the cutting teeth 5 machine on its peripheral side and on its front side, the material of the workpiece.
  • Fig. 2 shows in an enlarged detail the in Fig. 1 specified detail II arranged on the circumference 4 of the base body 3 cutting tooth 5 in the radial direction 11 outer peripheral edge 6 and a relative to the in Fig. 1 illustrated rotational axis 2 in the axial direction on the base body 3 protruding, adjacent to the peripheral cutting edge 6 first cutting projection 7.
  • the cutting projection 7 can be formed by a corner of the rectilinearly formed peripheral cutting edge 6.
  • a chamfer 13 is arranged between the radially outer cutting projection 7 and the peripheral cutting edge 6.
  • the peripheral cutting edge 6 can also have a curved course.
  • the circumferential cutting edge 6 runs from left to right, that is to say sloping in the direction of the cutting projection 7, that is to say to the axis of rotation 2 (FIG. Fig. 1 ) inclined.
  • the cutting tooth 5 is provided on the radially inner side of the cutting projection 7 with at least one second cutting projection 8 protruding beyond the main body 3 in the axial direction.
  • a third, in the axial direction above the base body 3 protruding cutting projection 9 is also provided radially inside the second cutting projection 8.
  • the second cutting projection 8 is slightly offset from the radially outer adjacent cutting projection 7 in the axial direction.
  • the third cutting projection 9, which is arranged offset in the axial direction relative to the radially outwardly junachagten cutting projection 8.
  • it can also be a reverse arrangement or axial offset between the cutting projections 7, 8, 9 expedient, in which the respective radially outer cutting projection 7, 8 with respect to the radially inner adjacent cutting projection 8, 9 is arranged set back.
  • the cutting projections 7, 8, 9 have axially outer tips 12.
  • they or their tips 12 lie on a straight line 10, which is inclined ⁇ to the radial direction 11 to form the axial offset described above by a small angle.
  • the amount of the angle ⁇ is preferably in a range of from 0.5 ° to 2.0 ° inclusive, and is 1.0 ° in the illustrated embodiment.
  • the cutting tooth 5 is sharpened not only in the region of its peripheral cutting edge 6, but also on its chamfer 13 and in the entire end area covering the cutting projections 7, 8, 9.
  • a ground contour is selected, according to which the cutting projections 7, 8, 9 are formed asymmetrically relative to the axial direction. This means that the flanks of the cutting projections 7, 8, 9 adjoining the respective tips 12 lie radially outward at a shallower angle to the axial direction than the radially inner legs respectively adjacent to the tips 12. But it can Also, a symmetrical configuration of the tips 12 and the cutting projections 7, 8, 9 or a non-symmetrical in the reverse direction configuration may be appropriate.
  • Fig. 2 shows an example of one of many cutting teeth 5, wherein all cutting teeth 5 are formed identically. Due to the arrangement of the cutting teeth 5 on the circumference 4 of the base body 3, the peripheral cutting edges 6 of all cutting teeth 5 lie on a common conical surface. The same also applies to the chamfers 13 as well as to the straight lines 10 of all the cutting teeth 5. However, an arrangement may also be expedient in which not all the cutting teeth 5 are formed in the form shown. One possibility is, for example, that the cutting projections 7, 8, 9 of a single cutting tooth 5 are offset relative to those of an adjacent in the circumferential direction cutting tooth 5 in the radial direction 11 and / or have a different shape and / or a different number.
  • Fig. 3 shows a variant of the arrangement according to Fig. 1 in which the cutting teeth 5 have a different shape.
  • specified detail IV is in enlarged detail in Fig. 4 shown, therefore, the cutting projections 7, 8, 9 have a contour with rounded waveform. Sharp-edged tips 12 as shown Fig. 2 are not available. Nevertheless, the cutting tooth 5 as well as in the embodiment Fig. 2 in its entire, the cutting projections 7, 8, 9 covering area sharply ground to form the rounded waveform.
  • the embodiment is correct after the 3 and 4 with the one after the Fig. 1 and 2 match.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Drilling Tools (AREA)
EP10004772.9A 2009-05-16 2010-05-06 Zerspanungswerkzeug Active EP2251164B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10004772T PL2251164T3 (pl) 2009-05-16 2010-05-06 Narzędzie skrawające

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009021629A DE102009021629A1 (de) 2009-05-16 2009-05-16 Zerspanungswerkzeug

Publications (2)

Publication Number Publication Date
EP2251164A1 EP2251164A1 (de) 2010-11-17
EP2251164B1 true EP2251164B1 (de) 2017-11-29

Family

ID=42752957

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10004772.9A Active EP2251164B1 (de) 2009-05-16 2010-05-06 Zerspanungswerkzeug

Country Status (5)

Country Link
EP (1) EP2251164B1 (pl)
DE (1) DE102009021629A1 (pl)
DK (1) DK2251164T3 (pl)
PL (1) PL2251164T3 (pl)
PT (1) PT2251164T (pl)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1810823A (en) * 1930-06-13 1931-06-16 Henry Disston & Sons Inc Circular saw
GB616664A (en) * 1946-09-19 1949-01-25 Arthur Fredrick Johns An improved circular saw
DE10107881A1 (de) 2001-02-20 2002-09-05 Leitz Gmbh & Co Kg Geb Zerspanwerkzeug
DE102004012619B4 (de) * 2004-03-12 2006-02-16 Keil Werkzeugfabrik, Karl Eischeid Gmbh Schneidplatte sowie Vorrichtung zur Herstellung von Bohrern
CA2676839C (en) * 2007-01-29 2013-10-15 Maurice Micacchi Saw tooth for circular saw

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DK2251164T3 (en) 2018-03-05
DE102009021629A1 (de) 2010-11-18
EP2251164A1 (de) 2010-11-17
PL2251164T3 (pl) 2018-04-30
PT2251164T (pt) 2018-02-12

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