Patent ID: 7302947

Claim:
A cutting machine, comprising: a cutting supporting frame comprising a bottom collecting tray and a cutting table mounted thereon for supporting a work piece; a cutting head arrangement comprising a cutting blade supportively overhanging said cutting table; and a motor air flow arrangement, comprising: a driving motor supported above said bottom collecting tray and a driving shaft which is driven to be rotated by said driving motor to drive said cutting blade to rotate; a motor case having an open inlet end, an opposed open outlet end, and a circumferential wall extended between said open inlet end and said open outlet end to define a motor cavity within said open inlet end, said open outlet end, and said circumferential wall for said driving motor supporting in said motor case, and comprising sucking means for sucking air through said open outlet end and discharging said air through said open outlet end; and an air intake hood, which has: a circumferential wall sheltering around said motor case to define an air intake passage between said circumferential wall of said air intake hood and said circumferential wall of said motor case to communicate with said open inlet end of said motor case; an air intake window communicating said air intake passage with an exterior of said air intake hood; an air discharging slot communicating with said open outlet end of said motor case; and a sidewall defining an air chamber between an inner side portion of said air intake hood and said open inlet end of said motor case, wherein when said air is sucked through said air intake window, said air is detoured to enter into said motor cavity through said air intake passage and said air chamber to generate a circulated motion of air cycle in said air intake hook for enhancing a sucking effect of said driving motor.