EP 0355436 A3 19900905 - SAWBLADE SEGMENTS CONTAINING FINE DIAMOND OR CUBIC BORON NITRIDE PARTICLES
Title (en)
SAWBLADE SEGMENTS CONTAINING FINE DIAMOND OR CUBIC BORON NITRIDE PARTICLES
Publication
Application
Priority
US 23658088 A 19880825
Abstract (en)
[origin: EP0355436A2] The object of the invention is to provide saw blades having abrasive cutter segments which will wear non-uniformly so as to provide a concave wear surface and to thereby minimize blade path deviation, i.e. lateral vibration of the saw blade. Figure 2 illustrates a preferred embodiment of a cutting segment for use on saw blades for cutting granite, marble, filled concrete and other hard materials. As can be seen, the concentration of diamond cutting elements (1) in the centre section (2) is preferably about the same as the concentration of diamond cutting elements (1) in the side sections or matrices (3). It should be appreciated, however, that a larger or smaller concentration of diamond cutting elements (1) can be employed in the centre section (2) without departing from the spirit or intended scope of the invention. For example, it is expected that in some applications it may be desirable that the concentration of diamond cutting elements (1) in the centre section (2) be greater than the concentration of diamond cutting elements (1) in the side sections (3). The most important consideration in the practice of the invention is that a non-uniform cutting rate be achieved by including an effective amount of abrasion-resistant particles (4) in side sections (3). Saw blade segments manufactured with abrasion resistant particles (4) in side sections (3) will exhibit concave wear and will form a ridge on stone workpiece (5) as shown in Figure 2. It is the presence of this ridge which minimize the ability of the saw blade to deviate from its cutting path. Any suitable particles may be utilized as the abrasion-resistant particles (4). However, it has been found that diamond, CBN and tungsten carbide particles are particularly effective. In general, the abrasion-resistant particles (4) should be less than about 80 mesh. Of course, the optimum mesh size for a particular application can be determined without undue experimentation. The concentration of abrasion-resistant particles can also vary depending upon the particular application, but a concentration of from about 0.10 to about 0.35 carats per cubic centimeter has been found to be effective.
IPC 1-7
IPC 8 full level
B24D 3/00 (2006.01); B24D 5/12 (2006.01); B28D 1/12 (2006.01)
CPC (source: EP)
B24D 5/12 (2013.01); B28D 1/12 (2013.01); B28D 1/121 (2013.01)
Citation (search report)
- [X] DE 2438601 A1 19760226 - WINTER & SOHN ERNST
- [X] US 3203774 A 19650831 - PRATT WILLARD R
- [X] DE 2318378 A1 19740919 - BRONAT KG GEORG
- [X] DE 1652480 A1 19710211 - BUETTNER WILLI
- [A] EP 0169081 A2 19860122 - MEGADIAMOND IND INC [US]
- [A] DE 1917957 A1 19701029 - PAHLITZSCH DR ING GOTTHOLD
- [A] DE 3204276 A1 19830818 - KOENIG J GMBH & CO WERKZEUGFAB [DE]
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI SE
DOCDB simple family (publication)
EP 0355436 A2 19900228; EP 0355436 A3 19900905; JP H0276681 A 19900316
DOCDB simple family (application)
EP 89113645 A 19890725; JP 21765689 A 19890825