Angle adjusting mechanism and machining equipment

In the angle adjusting mechanism, a first angle adjusting assembly comprises a first connecting piece, a first scale piece and a first rotating piece, the first scale piece and the first rotating piece are sequentially stacked in the first direction, and the first connecting piece is connected to the center of the first rotating piece and penetrates through the first scale piece to be fixedly connected with a second angle adjusting assembly; the second angle adjusting assembly comprises a second connecting piece, a second scale piece and a second rotating piece, the second scale piece and the second rotating piece are sequentially stacked in the second direction, the second connecting piece comprises a first connecting body and a second connecting body with the included angle larger than zero degree, and the second connecting piece is connected to the center of the second rotating piece and penetrates through the second scale piece to be fixedly connected with the third angle adjusting assembly. The third ang