| 摘要 |
PROBLEM TO BE SOLVED: To eliminate the processes and carry out precise work even for a fine and complicated shape by inputting data on the dimension and the shape of a mold to an automatic control working machine to execute working. SOLUTION: The data related to the shape and the dimension of the three- dimensional mold is stored in a computer 1, and based on these stored data, the driving of the working machine 2 is controlled. In the working device 2, a suction pipe 9 for sucking and removing powdery and granular body of sand, etc., produced accompanying cutting of a block 4 is arranged at a specified position of a working table 5 and connected with a vacuum pump. By this constitution, it is prevented that the worked surface is flawed by insertion of the cut sand between a tool 7 and a block 4. |
