ENG
KOR
TECHNOLOGY
Wire-cut Discharge Machinery Technology with Best Performance.
Composition of product and development assignment
The wire cut electric discharge machine discharge all the member who controls a processing misfortune feed mechanism and discharge for the wire control device which treats the wire which is a tool and a cooling and processing chip removal energy and control circuit and is composed with CNC systems which control like this whole system Like this each system will be combined the trade name organically and when being operated expense with, as the discharge processor makes the function of optimum display.
Point technology
SPM achieved development of successfully do cnc controller, discharge power supply and controlling element, wire transfer controlling element, processing supply chapter and semiautomatic connection , and developed item is applying in mass production.
CNC controller
SPM’s CNC device uses a high-speed signal processor (DSP) to control up to six axes simultaneously and can process up to 128 I/O points. This capability enables the implementation of various programs and allows easy expansion for new features in the future. Additionally, by integrating USB functionality, the device allows communication with PCs, enhancing the efficiency of the entire system by enabling user interfaces such as interpreters and monitoring via PC. The device also features a battery backup to safely store critical parameters during power outages, ensuring maintenance service capabilities.
Discharge power supply and control unit
The discharge power supply consists of a main discharge unit and an auxiliary discharge unit. The main discharge unit is capable of supplying high-speed discharge pulses of several hundred amps within microseconds by connecting MOSFET elements in parallel. The auxiliary discharge unit is adjustable from 0 to 150V to accommodate different workpiece materials. The discharge control unit is the core device that detects the discharge voltage in real-time and controls the application of the most efficient discharge pulses. It uses FPGA technology for high-speed processing and implements complete mechanical discharge control.
Wire controller unit
The wire's feed speed and tension, used as the tool in wire-cut EDM, significantly influence factors such as speed, breakage, and accuracy. The wire control unit plays a vital role in establishing optimal conditions for these parameters and must be durable, flexible, and expandable. SPM's equipment is designed with an expandable structure for wire bobbin devices, ensuring long-term operation of the machine and providing ease of wire mounting for operators.
Fluid supplier unit
During wire-cut EDM, the wire and workpiece make indirect contact, generating discharge heat and causing cutting chips to scatter. The coolant supply unit provides ionized water to the machining area, lowering the temperature, removing cutting chips, and eliminating sludge, thereby improving overall machining efficiency. SPM is actively researching ways to enhance the filtration efficiency of the coolant supply unit and make it more compact for longer-term use.Key technologies under development
SPM is not only focused on domestic production but is also dedicated to advancing technology to secure global competitiveness. With the increasing demand for technologies such as 64-bit CNC devices, electroless power supplies, ultra-precision power supplies, and real-time communication methods, SPM is continuing to accumulate technical expertise through its in-house research laboratory and industry-academia collaboration.
High precision power supply unit
For ultra-fine machining, the power supply generally increases the frequency of machining voltage to apply energy at small, high-speed rates, improving the surface roughness of the workpiece. To perform this process, high-efficiency and high-speed power switch control technologies are required. SPM is focused on developing ultra-precision power supplies capable of achieving a surface roughness of Ra 0.2µm and plans to improve power switch performance.Electroless power supply unit
Ions in the coolant cause rust on the workpiece, leading to inevitable loss. SPM aims to minimize the movement of ions dissolved in the coolant, thereby preventing hardware damage or corrosion over extended periods. The company is strengthening control through the use of AC high-frequency power to reduce this effect.Real-time communication type
Real-time communication methods, which are used to monitor equipment operation and predict workload for 24-hour operation systems, have become essential in the machine tool industry. SPM is working to develop a real-time communication system using fieldbus technology, ensuring ideal interaction between the CNC device, servo drivers, and various I/O devices. This system simplifies wiring between devices, supports the integration of additional hardware or software, and enhances the reliability and maintainability of the equipment. SPM plans to further develop this system within an expandable range.