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How CNC lathe manufacturers solve the problem of Tool Collision

Tool Collision
refers to a machine tool accident in which the tool accidentally collides with the workpiece, chuck or tailstock in the process of moving. Tool collision is the most likely accident for novice NC lathe operators. Once a tool collision accident occurs, the accuracy of the machine tool will be affected in light cases, and the machine tool will be damaged in heavy cases. The operator must pay great attention to it. In order to prevent tool collision, it is suggested that the operator should do a good job in this respect: correctly set the tool and set the tool compensation, and pay attention to that the z-direction zero point used for tool alignment should be consistent with the z-direction zero point used for programming during the z-direction trial cutting and tool alignment, so as to avoid tool collision due to the inconsistent setting of the workpiece coordinate system.

(1) Frequently check whether the lathe limit stop is in the correct position and whether it is loose; (however, it should be noted that the limit of the machine tool can only play a protective role at the limit position of the travel. In most cases, the limit of the machine tool can not effectively prevent tool collision during the machining process due to the different extended positions of the tools and the different sizes of the workpiece blanks).

(2) After the program input is completed, it is necessary to carefully check whether there are errors, so as to avoid tool collision caused by wrong coordinate number input.

(3) At the beginning of phase operation, set the fast magnification to be slower (for example, it can be set to 25%).

(4) After the program is compiled, the single-stage debugging shall be carried out first, and the display screen shall be switched to the page where the workpiece coordinate system and the program being executed can be seen at the same time.

(5) During the debugging process, always pay attention to the current absolute coordinate value and the end coordinate position of the next program segment to determine the distance the tool will move, and then observe the distance between the current tool position and the workpiece position, so as to judge whether the collision is possible.

(6) If the tailstock must be used during machining, the limit position where the electric tool holder does not collide with the tailstock in the X direction and the limit position where the carriage does not collide with the tailstock in the Z direction must be considered when installing the tool.