Patent ID: 6855038

Claim:
A shaping pulley assembly for a belt notching machine, including on a frame ( 1 ) a pair of pulleys ( 3 , 4 ) carrying a grinding belt ( 5 ), the one of the pulleys ( 3 , 4 ) being a driving pulley ( 3 ) for the grinding belt ( 5 ), and the other one being a shaping pulley ( 4 ) that is interchangeably mounted on the frame ( 1 ) to co-operate with the grinding belt ( 5 ) for forming differently sized recesses in tubular workpieces and/or solid sections, characterized in that the shaping pulley assembly comprises: a shaping pulley holder element ( 9 ) like a fork supported by the frame ( 1 ), having a C-shaped body with end brackets ( 90 , 91 ), one ( 90 ) of which is provided with a housing ( 10 ) coaxial to another housing ( 11 ) in the other end bracket ( 91 ) a stationary centre ( 7 ) and a removable counter-centre ( 8 ), both being live centres which are housed in the respective said housings ( 10 , 11 ) of stationary centre and removable counter-centre; an idle shaping pulley ( 4 ) in the form of a cylindrical roller, which is provided with centre holes ( 42 , 43 ) opposite to each other for said fixed centre ( 7 ) and said removable counter-centre ( 8 ), respectively on the bases ( 40 , 41 ) of the shaping pulley ( 4 ).