Abstract: A circular saw cutting machine (1) includes a machine main body (10), an articulated robot (60), and a cutter stocker (70). A circular saw (5) is secured and interposed by a cutter clamp cylinder (CYL21) between a front end face (32) of the main spindle (21) and a cutter presser piece (50) with pins (33, 51) inserted in pin insertion holes (5b). When removing the circular saw (5), a hydraulic is switched over to cause the cutter clamp cylinder (CYL21) to perform unclamping so that the cutter presser piece (50) can be pulled out of the main spindle (21). When the articulated robot (60) performs cutter change, a main spindle motor (M10) and a brake (25) are controlled based on the rotation angle detected by a spindle stop position sensor (SE10) to stop the main spindle (21) in a predetermined home angle condition.

Abstract: In a circular cutting machine, a main vice unit includes a stationary rear vice and a front vice disposed to be movable back and forth in a range between a position forward of a preset cutting position and a rearmost position where the rear ends of jaws come into contact with the front ends of jaws of the rear vice. The rear and front vices include clamping cylinders that are independently controllable so as to independently clamp and unclamp their respective vices. When photoelectric sensors detect the rear end of work, the remaining length is calculated, which is then divided by the fixed-length feed amount to calculate a remaining number of possible cutting operations. The remaining number of such operations are carried out by using either a combination of the front vice and a transfer vice unit or the front vice alone to pull out the work.

Abstract: In a circular cutting machine, a main vice unit includes a stationary rear vice and a front vice disposed to be movable back and forth in a range between a position forward of a preset cutting position and a rearmost position where the rear ends of jaws come into contact with the front ends of jaws of the rear vice. The rear and front vices include clamping cylinders, respectively, that are independently controllable so as to independently clamp and unclamp their respective vices. When photoelectric sensors detect the rear end of work, the remaining length is calculated, which is then divided by the fixed-length feed amount to calculate remaining number of possible cutting operations. The remaining number of fixed-length feeding operations are continued to be carried out by using either a combination of the front vice and a transfer vice unit or the front vice alone to pull out the work.