Znc EDR Mesin Small-size EDM Machine di harga pabrik secara langsung Dijual oleh produsen Tionghoa

   
Our history

2003 In 2003, it was founded by 5 senior engineers of state-owned machine tool factory, and was named: Jinan Zhengri Technology Co., Ltd.
2004-2006 The workshop was put into use, mass production of EDM machine tools
2007 Started production of 400/500 graphite engraving machine/engraving and milling machine supporting EDM machine tool
2008 Started R&D of ESD unimpeded power supply
2009 EDM power supply 150A electric cabinet supporting rectangular tire mold EDM machine tool
2010 EDM unimpeded power supply supporting tire mold EDM machine tool
2011 The new R&D center was established and put into use. 500 Series Carving Machine/Carving Mill Supporting Tool Magazine
2012 Research and development of four-axis engraving machine/engraving and milling machine, swing head B-axis harmonic reducer
2013 R&D of the third generation climbing circuit of ESD unimpeded power supply
2014 The hydrological plant was put into use, and energy circuits such as electric spark power supply were successfully developed
2015 1280 gantry machining center development
2016 Purchase of large-scale grinding machines and boring machines, 80% of machine tool parts are processed independently
2017 R&D of 5-axis engraving machine/engraving and milling machine
2018 Successfully renovated Taiwan's BXT and SIT cabinets due to tire mold sparks
2019 Trial production of desktop-grade small five-axis machine tool succeeded



Description

Electrical Discharge Machine(EDM), Die-sinking EDM, also called cavity type EDM or volume EDM, consists of an electrode and workpiece submerged in an insulating liquid such as, more typically, oil or, less frequently, other dielectric fluids. The electrode and workpiece are connected to a suitable power supply. The power supply generates an electrical potential between the two parts. As the electrode approaches the workpiece, dielectric breakdown occurs in the fluid, forming a plasma channel, and a small spark jumps.

These sparks usually strike one at a time because it is very unlikely that different locations in the inter-electrode space have the identical local electrical characteristics which would enable a spark to occur simultaneously in all such locations. These sparks happen in huge numbers at seemingly random locations between the electrode and the workpiece. As the base metal is eroded, and the spark gap subsequently increased, the electrode is lowered automatically by the machine so that the process can continue uninterrupted. Several hundred thousand sparks occur per second, with the actual duty cycle carefully controlled by the setup parameters. These controlling cycles are sometimes known as "on time" and "off time". The on time setting determines the length or duration of the spark. Hence, a longer on time produces a deeper cavity for that spark and all subsequent sparks for that cycle, creating a rougher finish on the workpiece. The reverse is true for a shorter on time. Off time is the period of time that one spark is replaced by another. A longer off time, for example, allows the flushing of dielectric fluid through a nozzle to clean out the eroded debris, thereby avoiding a short circuit. These settings can be maintained in microseconds. The typical part geometry is a complex 3D shape, often with small or odd shaped angles. Vertical, orbital, vectorial, directional, helical, conical, rotational, spin and indexing machining cycles are also used.

                               



Main Features

1. Complex shapes that would otherwise be difficult to produce with conventional cutting tools.
2. Extremely hard material to very close tolerances.
3. Very small work pieces where conventional cutting tools may damage the part from excess cutting tool pressure.
4. There is no direct contact between tool and work piece. Therefore delicate sections and weak materials can be machined without any distortion.
5. A good surface finish can be obtained.
6. very fine holes can be drilled.