NUM1050 is an open and powerful CNC system with 64-bit CPU for fast processing speed and high position control accuracy. The system can perform simple RS232C serial communication or complex FIPWAY network communication. The parameter setting and transmission of the system and the loading and unloading of the machine part program are quite convenient. The following is a brief introduction to the electrical control of a three-axis gantry milling machine with NUM1050 and NUMDRIVE.
1 Machine tool electrical control system composition
The machine has three linear coordinates, the X coordinate drives the gantry, the stroke is up to 10.5m, the three coordinates adopt the HEIDEHAIN linear encoder (1Vpp sine wave) full closed loop feedback mode, and the machine tool spindle is the electric spindle. According to the structural characteristics of the machine tool, the NUMI050 numerical control system, NUMDRIVE digital servo drive system and MDLU digital feed drive module are equipped for its electrical control system. In consideration of the DNC control of the machine tool and the FMS incoming line function, the plug-in type is configured. FIPWAY network communication module; BPH motor is installed in 3 feed coordinates (X: 36N"m, 200r/min, Y: 17N·m, 200r/min, Z: 17N·m, 200r/min), spindle equipment Schneider inverter.
2 NUM1050 CNC system peripheral interface module
The NUM1050 machine operator panel has up to 39 custom keys. The panel and system are connected by fiber optics. In combination with the requirements of the machine control operation, we have defined some operation keys on the operation panel, which fully meet the requirements of machine control.
NUM1050 provides users with a variety of input output modules. Among them, 32-bit input modules, each with LED indication, can be connected to the three-wire proximity sensor signal in addition to the general 24VDC switch. This provides a convenient and reliable connection to some of the three-wire proximity switches of the machine. 24-bit output relay module with a maximum output current of 8A. It fully meets the control requirements for solenoid valves and contactors in the electrical system of the machine tool.
The NUM1050 itself has an analog input and output and an external interrupt interface (IT/ANA) that provides a flexible analog output for the machine to easily interface with other modules. This machine tool uses this interface as the command voltage output of the spindle inverter, and successfully realizes the stepless speed regulation of the numerical control system to the variable frequency electric spindle.
3 NUM1050 CNC system software development tools
The NUM1050 CNC system provides machine tool manufacturers with a wealth of software resources and powerful software development tools such as PLCTOOL, SETTOOL, MMITOOL and PCKITTOOL. They are all built on the WINDOWS platform, which brings great convenience to the machine control system developers.
NUM1050 also provides users with a variety of position compensation software, among which the inter-coordinate position correction software (INTERAXIS CALIBRATION) is a feature, it is a position compensation software designed for the portal milling machine. Due to the movement of the main shaft on the gantry, the weight of the main shaft causes longitudinal deformation of the beam, and this deformation varies nonlinearly along the direction of the main shaft. Through the software, the system can compensate the position of the Z direction in real time according to the movement amount of the spindle head on the beam, so that the machine tool can obtain good position control precision.
We use PLCTOOL software to develop the PLC control program of the machine tool in a short time, and use SETTOOL to quickly and accurately set and adjust the machine parameters and servo drive parameters, and adjust the movement data related to the machine tool (reference point, Soft limit, maximum feedrate of the machine, etc.). Using the laser interference range finder, the positioning error of the 3 coordinates is measured, and the parameter position correction is performed by using the "axis correction" software provided by the system.
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