| 摘要 |
<p>PURPOSE:To improve a machine's availability factor, by attaching tools of a different type to n (n<N) pieces of a tool pot and then allocating each of different NC programs to these tools, while attaching tools of the same type to N-n pieces of the tool pot and allocating the same NC program code to them. CONSTITUTION:An automatic tool hanger is provided with tool magazine having N pieces of tool pots. In this case, a numerical control system operates with a NC program corresponding to machining details of a work cell, while tool designation takes place with a prealloted NC program, namely, a T code. Among N pieces of tool pots, tools of a different type are attached to n pieces, and each of different T codes is allocated to them, while tool of the same type are attached to N-n pieces, and the same T code is allocated to them. When the existing tool in use reaches to its srvice life limits, a spare tool within the same group is used in time of the next operation whereby a machine's availability factor is in no case reduced at all.</p> |
