C620普通车床、CE7112液压仿形车等,其车刀在刀架上的紧定,都用M16方头螺栓。长期使用后发现,因螺栓紧定端面面积较小,使头部变形,加之用力过大螺纹损坏,甚至损伤刀架螺孔,车刀背面留下压痕。为了能用较小的力量可靠地压牢刀杆,我们将现有刀架螺栓加以改进。如图1所示,在螺栓端部再车出M12×1螺纹,并拧入压 C620 ordinary lathe, CE7112 hydraulic profiling cars, etc., the lathe on the turret on the tight, all with M16 square head bolts. After long-term use, it is found that due to the small area of ​​the bolt-on end face, the head is deformed, and the excessive force is used to damage the thread, or even to damage the screw hole of the tool holder, leaving an indentation on the back of the tool. In order to press the cutter bar securely with less force, we improved the existing cutterhead bolts. Shown in Figure 1, then M12 × 1 thread in the end of the bolt, and screwed into the pressure