EXCAVATOR DIPPER TOOTH AND METHOD OF ITS MANUFACTURE Russian patent published in 2006 - IPC E02F9/28 

FIELD: mechanical engineering; design of excavator dipper teeth.

SUBSTANCE: parallelepiped inserts are fitted in tooth point and inserts of cylindrical form are fitted further on along working plane. Inserts manufactured of wear-resistant cast iron, owing to shadow effect, prevent intensive abrasive wear of steel base, thus increasing service life of tooth. As wear-resistant inserts are arranged only on one of working surfaces, other surfaces (opposite one) is subjected to more intensive wear which provides finally sharpening of tooth in process of operation. Use of such design and method of manufacture make it possible to increase service live more than two times and provided reliability of operation of excavator dipper.

EFFECT: increased service life and provision of self-sharpening of tooth point owing to fitting-in small size wear-resistant cast iron parts in steel base.

4 cl, 4 dwg