WO2008098635A1 - Trennscheibe für werkzeugmaschinen - Google Patents
Trennscheibe für werkzeugmaschinen Download PDFInfo
- Publication number
- WO2008098635A1 WO2008098635A1 PCT/EP2007/063904 EP2007063904W WO2008098635A1 WO 2008098635 A1 WO2008098635 A1 WO 2008098635A1 EP 2007063904 W EP2007063904 W EP 2007063904W WO 2008098635 A1 WO2008098635 A1 WO 2008098635A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- segment receiving
- cutting
- disc according
- segment
- receiving portions
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/12—Cut-off wheels
- B24D5/123—Cut-off wheels having different cutting segments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/12—Cut-off wheels
-
- 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
- B23D1/00—Planing or slotting machines cutting by relative movement of the tool and workpiece in a horizontal straight line only
- B23D1/02—Planing or slotting machines cutting by relative movement of the tool and workpiece in a horizontal straight line only by movement of the work-support
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/12—Saw-blades or saw-discs specially adapted for working stone
- B28D1/121—Circular saw blades
-
- 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
- Y10T83/9372—Rotatable type
- Y10T83/9403—Disc type
Definitions
- the invention relates to a cutting disc for
- Machine tools in particular for abrasive hand tool machines, such as e.g. Angle grinder, according to the preamble of claim 1.
- a blade for an angle grinder which consists of a circular master blade with a central recess for placement on a drive spindle and radially on the outer edge of the master blade patch individual cutting segments.
- Cutting segments which are materially connected to the outer edge of the stem sheet, for example by soldering or welding, are constructed identically to each other and are at a distance from each other, so that between each two adjacent cutting segments a gap is formed.
- the cutting segments have an approximately rectangular cross-section, the gap-limiting wall sides of adjacent cutting segments are approximately parallel.
- the size and shape of the cutting segments is on the
- the invention is based on the object to reduce the variety of types of cutting wheels with different sized stem leaves and corresponding associated cutting segments with simple measures.
- the cutting blade for machine tools has a master blade whose outer edge, viewed in the circumferential direction, is subdivided into at least two identically constructed segment receiving sections, which are each assigned to a cutting segment.
- the segment receiving portions are formed in such a way that at least a portion of such
- Segment receiving portion based on an envelope, which is placed around the outer edge of the master sheet, radially offset, in particular set back. This means that the segment receiving portions are not on a continuous circular path, but that the segment receiving portions are offset from the circular path, so that there is an uneven outer edge course in the circumferential direction. This opens up the possibility of forming the segment receiving sections independently of the master blade diameter in the same way, so that also similar cutting segments for
- Segment receiving sections which are arranged over the circumference in the various circle segments of the master sheet, constructed identically, so that per master sheet and identical cutting segments can be used. However, it is also possible to use two or more types of cutting segments on a master sheet, either similar or possibly different Segment receiving sections are assigned to the outer edge of the master sheet.
- segment receiving sections different designs are possible. It is possible for a straight-line design of a segment receiving portion or a curved, in particular a circular arc-shaped or part-circular design, wherein in the case of circular arc execution of the radius is different from the radius of the master blade, so either larger or smaller than the stem radius, but preferably smaller as this one.
- the master sheet takes the form of a polygon.
- segment receiving sections of different shape are provided on a master blade, then these can differ both in terms of their length and (additionally or alternatively) with regard to their geometry, ie they can be curved or rectilinear. With a different length of the segment receiving portions, the correspondingly assigned cutting segments can also have a different length. But it is also possible to use cutting segments of constant length, so that gaps of different widths are formed between adjacent cutting segments. Such gaps are preferably provided in each case, that is, both at segment receiving portions of constant length and at different lengths.
- At least one, but preferably all segment receiving portions of a master blade are formed in such a way that the center line through the two peripheral end points of the segment receiving portion is perpendicular to a straight line which is passed through the center of the master blade and bisected the segment receiving portion.
- the straight line is the middle bisector of the segment receiving section, which is guided radially through the center of the cutting disc.
- center line of the segment receiving portion to this line forms a tangent to the circumference or parallel to the circumference of the master sheet.
- the centerlines of immediately adjacent segment receiving sections enclose an angle with each other. This embodiment is applicable to both rectilinear and curved segment receiving sections.
- the angle between the centerline of a segment receiving portion and said straight line deviates from 90 ° such that the centerline is not parallel to a tangent on the circular envelope, but rather includes an angle with these tangents. If a plurality of such segment receiving sections are provided over the circumference of the master blade, a sawtooth-like profile of the outer edge of the master blade results.
- Essential is the segmentation of the master sheet with the segment receiving portions, wherein preferably the number of differently shaped segment receiving portions is kept as low as possible. Irrespective of the diameter of the master blade, the cutting segments can then be placed on the respectively assigned segment receiving sections and connected to the master blade, in particular by material bonding by means of soldering or welding.
- the radial inner side of the cutting segments is adapted to be placed on the outer edge of the master blade uniformly to the respectively associated type of segment receiving portion.
- the radial outer side of the cutting segment can be designed independently of the segment receiving portion; possible is both a straight-line design of the radial outer side and a curved, in particular circular arc-shaped design or wavy or zig-zag designs.
- FIG. 2 is a plan view of the cutting disc, which consists of a master sheet with attached to the outer edge cutting segments, wherein the outer edge of the master sheet is divided into similarly constructed segment receiving portions, each associated with a cutting segment,
- Fig. 3 shows a detail of a cutting disc with a
- Master blade the outer edge of which has arc-shaped segment-receiving portions for receiving a respective cutting segment
- Fig. 4 is a schematic representation of a
- Welding device for welding the cutting segments to the segment receiving sections on the master blade
- FIG. 6 shows a cutting disk with concavely curved segment-receiving portions
- Fig. 7 shows a cutting disc with round cutting segments.
- Fig. 1 In the grinding hand tool machine shown in Fig. 1 is an angle grinder 1, in the housing 2, an electric drive motor is arranged, via a
- Electric connection cable 3 is to be supplied with electricity.
- a transmission device drives the electric drive motor Work spindle 4, on which a fastening device 5 rotatably a cutting disc 6 is fixed, which is surrounded by a protective hood 7 partially.
- the cutting disk 6 consists of a master blade 8 and cutting segments 9, which are placed on the radial outer edge of the master blade and connected thereto.
- the master blade 8 is designed as a polygon and has at the radial outer edge a plurality of identically constructed segment receiving sections 10, which are each designed to receive a cutting segment 9.
- the cutting segments 9 are formed in a straight line according to a preferred embodiment, they have in the circumferential direction the length L.
- the cutting segments 9 are centered in each
- Segment receiving portion 10 is arranged.
- the cutting segments 9 may be formed rectangular, or, as shown in Fig. 2 in dashed line, trapezoidal, wherein the
- Narrow side of the trapezoid on the segment receiving portion 10 radially remote side.
- the outer contour of the master blade 8 is bordered by an imaginary circular envelope 11, which only touches the corner points to transition between two adjacent segment receiving portions 10.
- the central area of each segment receiving portion 10 is radially recessed from this imaginary envelope 11.
- the segment receiving portions 10 are perpendicular to one
- the master sheet 8 has the shape of a regular polygon.
- Segment receiving portion 10 so that it includes an angle ⁇ with the straight line 12, which deviates from 90 °.
- the master sheet 8 has a sawtooth-shaped circumference. Based on the direction of rotation of the master blade 8, the segment receiving portions 10 may be radially sloping or radially increasing in the circumferential direction.
- FIG. 3 a further embodiment of a cutting disc 6 with a master blade and arranged on the outer edge cutting segments 9 is shown.
- the individual segment receiving portions 10 on the outer edge of the master blade 8 are curved, in particular circular arc-shaped and have the radius T 1 , which is smaller than the radius r of the circular envelope 11 around the outer contour of
- the segment receiving portions 10 are convexly shaped with radial curvature to the outside, in principle, a concave curvature inward is possible.
- the cutting segments 9 have on their the segment receiving portion 10 side facing a contact surface with the same radius as the segment receiving portions. On its radially outer side, the cutting segments 9 are also formed in a circular arc.
- FIG. 4 shows a welding device 13 for welding individual cutting segments 9 onto the outer contour in the region of the segment receiving sections of the master blade 8.
- the welding device 13 consists of a rotatable foot 14 and a thereto held displaceable welding arm 15, at the opposite ends in each case a cutting segment 9 is to be welded to the outer contour of the master blade 8.
- a rectilinear design of the segment receiving portion of the Welding process per cutting segment 9 be accomplished by a translational displacement of the welding arm 15 alone.
- a rotation about the axis of the foot 14 or possibly a superimposed movement with rotational and translatory adjustment must be carried out.
- a cutting segment 9 can each be welded to the diametrically opposite sides.
- Segment receiving portion 10 two cutting segments 9 is provided.
- the cutting segments 9 per segment receiving portion 10 may be the same or different structure.
- Segment receiving portions 10 similar to the embodiment of FIG. 3 each have a circular arc and have the radius r lr, however, the segment receiving portions 10 are concave, so that the curvature of each segment receiving portion extends radially inwardly.
- the cutting segments 9 have a round cross-sectional shape.
- the segment receiving portions 10 are constructed accordingly and have a contour adapted to the cross-sectional shape of the cutting segments.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/446,916 US20090286457A1 (en) | 2007-02-14 | 2007-12-13 | Cutting wheel for power tools |
EP07857551A EP2125294A1 (de) | 2007-02-14 | 2007-12-13 | Trennscheibe für werkzeugmaschinen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007006997.0 | 2007-02-14 | ||
DE200710006997 DE102007006997A1 (de) | 2007-02-14 | 2007-02-14 | Trennscheibe für Werkzeugmaschinen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008098635A1 true WO2008098635A1 (de) | 2008-08-21 |
Family
ID=39219886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/063904 WO2008098635A1 (de) | 2007-02-14 | 2007-12-13 | Trennscheibe für werkzeugmaschinen |
Country Status (6)
Country | Link |
---|---|
US (1) | US20090286457A1 (de) |
EP (1) | EP2125294A1 (de) |
KR (1) | KR20090119855A (de) |
CN (1) | CN101605633A (de) |
DE (1) | DE102007006997A1 (de) |
WO (1) | WO2008098635A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009030484A1 (de) * | 2009-06-24 | 2010-12-30 | Rhodius Schleifwerkzeuge Gmbh & Co. Kg | Segmenttrennschleifscheibe |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB668144A (en) * | 1949-08-29 | 1952-03-12 | John Quincy St Clair | Diamond tools and method of making the same |
US3110579A (en) * | 1960-01-04 | 1963-11-12 | Vanguard Abrasive Corp | Method of making a diamond abrasive saw blade |
DE4424093A1 (de) * | 1993-07-13 | 1995-01-19 | Karlheinz Dietel | Segmenttrennschleifscheibe, Stammblatt und Segment |
US6401705B1 (en) * | 1998-11-20 | 2002-06-11 | Sankyo Diamond Industrial Co., Ltd. | Diamond blade and method of manufacturing the same |
WO2006106391A1 (en) * | 2005-04-05 | 2006-10-12 | Heger Gmbh European Diamond Tools | Cut-off wheel |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10321629A1 (de) | 2003-05-13 | 2004-12-02 | Robert Bosch Gmbh | Trennscheibe für Handwerkzeugmaschinen |
-
2007
- 2007-02-14 DE DE200710006997 patent/DE102007006997A1/de not_active Withdrawn
- 2007-12-13 US US12/446,916 patent/US20090286457A1/en not_active Abandoned
- 2007-12-13 CN CNA2007800513640A patent/CN101605633A/zh active Pending
- 2007-12-13 EP EP07857551A patent/EP2125294A1/de not_active Withdrawn
- 2007-12-13 WO PCT/EP2007/063904 patent/WO2008098635A1/de active Application Filing
- 2007-12-13 KR KR1020097016987A patent/KR20090119855A/ko not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB668144A (en) * | 1949-08-29 | 1952-03-12 | John Quincy St Clair | Diamond tools and method of making the same |
US3110579A (en) * | 1960-01-04 | 1963-11-12 | Vanguard Abrasive Corp | Method of making a diamond abrasive saw blade |
DE4424093A1 (de) * | 1993-07-13 | 1995-01-19 | Karlheinz Dietel | Segmenttrennschleifscheibe, Stammblatt und Segment |
US6401705B1 (en) * | 1998-11-20 | 2002-06-11 | Sankyo Diamond Industrial Co., Ltd. | Diamond blade and method of manufacturing the same |
WO2006106391A1 (en) * | 2005-04-05 | 2006-10-12 | Heger Gmbh European Diamond Tools | Cut-off wheel |
Also Published As
Publication number | Publication date |
---|---|
US20090286457A1 (en) | 2009-11-19 |
EP2125294A1 (de) | 2009-12-02 |
DE102007006997A1 (de) | 2008-08-21 |
KR20090119855A (ko) | 2009-11-20 |
CN101605633A (zh) | 2009-12-16 |
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