Welding type carbide hob apparatus

The utility model relates to a welded carbide hob device. The welded carbide hob with 25-degree engaging angle for a large module interlacing cutting edge has the structure that: a right cutter blade (2) is arranged on a left shoulder locating block (3) by the welding way, a left cutter blade (5) is arranged on a right shoulder locating block (6) by the welding way, the cutter blades (5) and (2) are respectively fixed at the same position through the shoulder locating block adopted by a same row of axial tooth shape, the cutter blades have same arrangement, the shoulder locating block adopted by the row of axial tooth shape is opposite to the shoulder locating block adopted by the previous row of axial tooth shape, the left and the right shoulder locating blocks are respectively fixed on a carbide hob body (1) by using bolts (4) so as to form the carbide hob device.