Fanuc Corporation

Hidehiro Miyajima

Osamu Hanaoka

Nobuaki Aizawa

Mitsuto Miyata

Kiwamu Saitou

Eiji Genma

Teruo Masuda

Yousuke Ootomo

Kouji Yamamuro

A machining command improving system is in an integrated system in which a CNC machine tool for machining of a machining target into a predetermined machining geometry a machining command and a shared database are connected to each other. The machining command improving system includes: a machining state recording unit that associates requested information indicating a request to be satisfied in the machining when the CNC machine tool performs the machining and state information indicating a state of implementation of the machining, and registers the associated requested information and state information as machining technique information; and a machining method improving unit. The machining method improving unit improves the machining command of the improvement target at the CNC machine tool based on machining technique information registered with the shared database and including requested information conforming at least partially to requested information corresponding to a machining command of an improvement target.

Machining command improving system and machining command improving method

A single machining program including turning and milling program steps together with a turning mode command or a milling mode command is stored in a program memory. When the turning mode command is read out from the program, a numerical control apparatus analyzes the program according to a G code architecture for lathe by numerical controller &num;1 for turning to control servo motors and a spindle motor. When the milling mode command is read out from the program, the apparatus analyzes the program according to the G code architecture for milling by a numerical controller &num;2 for milling to control the servo motors and the spindle motor.

Numerical control apparatus

Tool feed speed Fa (mm/min) is calculated for each tool feed step on the basis of a tool feed speed F (mm/rev) specified in advance and the actual rotational speed Sact of the spindle (rev/min). The tool feed speed Fa (mm/min) and the tool feed speed Fold of the previous cycle (initially, a value based on the maximum rotational speed S of the spindle as a tentative feed speed Fold) are compared, and if a change has been detected, a tool feed speed Fb (mm/min) for the subsequent tool feed step is calculated based on the relation between the tool feed speed Fc (mm/min) based on the subsequent maximum rotational speed S of the spindle (rev/min), the maximum rotational speed S of the spindle (rev/min), and the rotational speed Sact of the spindle (rev/min); and the tool feed speed undergoes pre-interpolation acceleration/deceleration control on the basis of the subsequent tool feed speed Fb (mm/min) and the tool feed speed Fa (mm/min).

Acceleration/deceleration control method for numerical control, and numerical control device

Machining data display system

Growing community of inventors

Yamanashi, Japan

Hidehiro Miyajima