Numerically controlled machine tool and method

A method of operating a numerical controller for controlling a machine tool, said numerical controller being operative to command a series of predetermined machine operations to be all performed by a single miscellaneous command and to command each operation of said series of predetermined machine operations to be performed by an individual miscellaneous command, comprising:

• automatically determining which operation of said series of machine operations has stopped, if any of the operations has been stopped during the execution of a single miscellaneous command for commanding said series of machine operations to be all performed, by incrementally and automatically comparing individual miscellaneous command values corresponding to the series of machine operations with a command value of the individual miscellaneous command of the stopped operation;
• and
• automatically executing the operations subsequent to the determined stopped operation under the control of a series of individual miscellaneous commands.

A numerical controller for controlling a machine tool, said numerical controller being operative to command a series of predetermined machine operations to be all performed by a single miscellaneous command and to command each operation of said series of predetermined machine operations to be performed by an individual miscellaneous command, comprising:

• judging means for determining which operation of said series of machine operations has stopped, if any of the operations has been stopped during the execution of a single miscellaneous command for commanding said series of machine operations to be all performed, by incrementally comparing individual miscellaneous command values corresponding to the series of machine operations with a command value of the individual miscellaneous command of the stopped operation;
• and
• means for commanding and executing the operations subsequent to the stopped operation judged by said judging means under the control of a series of individual miscellaneous commands.

A method of operating a numerical controller for controlling a machine tool, said numerical controller being operative to command a series of predetermined machine operations to be all performed by a single miscellaneous command and to command each operation of said series of predetermined machine operations to be performed by an individual miscellaneous command, comprising:

• determining which operation of said series of machine operations has stopped, if any of the operations has been stopped during the execution of a single miscellaneous command for commanding said series of machine operations to be all performed, by incrementally comparing individual miscellaneous command values corresponding to the series of machine operations with a command value of the individual miscellaneous command of the stopped operation;
• and
• executing the operations subsequent to the determined stopped operation under the control of a series of individual miscellaneous commands.