Our EDM Rapid hole drilling machine uses low cost electrode tube (normally brass or copper material) to drill holes on a electrically conductive material at a very high speed, the hole depth diameter ratio can reach up to 300.
The hole diameter is normally from 0.3mm (0.10mm opt) to 3.0mm (6.0 mm opt) and the machine can even drill holes on a inclined surface workpiece.
High-speed EDM hole drilling was designed especially for fast, accurate small- and deep-hole drilling applications.
Small holes that were once almost impossible to drill by conventional machine tools are now being performed with ease.
With the capability of drilling through virtually any conductive material, the use of this technology is continually expanding.
Considered a last resort for drilling holes, Fast Hole EDM Drilling (Electrical Discharge Machining) is quickly becoming the standard method for producing small, tight tolerance holes.
It is an extremely cost effective method for producing fast and accurate holes into all sorts of whether hard or soft conductive materials.
Designed to meet the needs of any job shop and the most demanding Toolmaking workshop, the Novidrill is simply the most unique range of EDM Drill on the market today.
This feature packed machines combine affordability, precision and versatility with a host of standard features.
An EDM drilling system simply must get the job done – and must not distract from important tasks. The Novidrill is therefore designed to bring the user quickly and simply to his goal. Speed and simplicity are also all-important as far as maintenance and organization are concerned – everything is readily accessible and accommodated immediately in the machine.
Compare the features with others and we are sure you’ll agree: The Novidrill offers more than competitive machines that sell for twice the price!
The perfect complement to the wire-cutting machines. The start-EDM drilling systems not only master small dimensions on start holes with 0,3–3,0 mm(0.1 /6.0 mm opt) electrodes, but also functional bores.
Novidrill‘s ability to use ordinary tap water as dielectric, coupled with a unique super high pressure pump system which provides excellent flush and stability at the electrode during the burn.
Drilling times are based on the hole size and type of material.
A few samples of possible speeds for reference:
|Material||Electrode Dia.||Drill Depth||Machining Time|
|Alloy Tool Steel||0,5mm||12,5mm||25 to 35 seconds|
|0,5mm||25mm||50 to 60 seconds|
|1,0mm||25mm||55 to 65 seconds|
|Tungsten Carbide||0,5mm||12,5mm||4 to 5 minutes|
|0,5mm||25mm||8 to 9 minutes|
|Aluminum||0,5mm||12,5mm||40 to 50 seconds|
|0,5mm||25mm||90 to 100 seconds|
Observing the mentioned times explains why high-speed EDM hole drilling has become an alternate method to conventional machining in mould manufacturing. In addition, this method of drilling produces burr-free holes, which results in the elimination of secondary deburring processes.
Today, every Novidrill can use distilled water/tap water as the flushing agent, which opens new and very economically application possibilities in the medical field. With continued improvement in this technology, more and more applications are being seen on the horizon-it has become a whole new method of manufacturing moulds and parts.
High-speed EDM hole drilling was designed especially for fast, accurate small- and deep-hole drilling applications. Small holes that were once almost impossible to drill by conventional machine tools are now being performed with ease. With the capability of drilling through virtually any conductive material, the use of this technology is continually expanding.
Initially shops were using this technology specifically for start holes in wire EDM jobs. Because of this technology, workpiece materials are being sent out for heat treating prior to drilling the start hole. This removed two major problems: having to program, locate and drill the holes by conventional machine methods in the “soft” workpiece prior to heat treat and by heat treat the workpiece before drilling, all the stresses are being removed prior to the drilling process. As this process became more widely known, test burns were being done in more than just hardened tool steel; tungsten carbide, aluminium, stainless, titanium, brass and inconel were being tested. High-speed EDM hole drilling applications began to expand to mould and part manufacturing-injection nozzles, oil drain holes, hydraulic cylinders and dowel pins, as well as turbine blades, ball bearings and safety wire holes in hex nuts, to name a few.
The EDM Drilling Process
The process consists of using a precision tubular electrode (generally brass or copper) mounted into the drill chuck located on the “Z” axis and held in location on top of the workpiece by the ceramic guide. The top of the workpiece is located and the drilling depth is set. The electrode rotation is turned on and the deionized water solution, which is pressurized between 30 and 120 kg/cm2, is sent through the tubular electrode as a flushing agent. The power supply parameters are set-which normally consist of on-time, off-time, peak current and amount of capacitance. At this point, the discharge is turned on to begin the drilling cycle. At the end of the drilling cycle, the discharge is turned off and the “Z” axis is retracted above the workpiece.
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