How to drill a 0.2 mm diameter hole in tool steel?


When you need to drill small holes, finding a drill is not th eproblem but drilling is the problem. Now with our Novidrill400-II you can drill holes of 0.2 mm in ANY conductive material. The machine is affordable and can drill holes from 0.2 till 3 mm with the standard drill holder. Other sizes, bigger and smaller are also possible to drill with an extra toolholder.

 

Drilling an 18 mm deep hole with an 0.2mm diameter at a customer.  NOn contact drilling. Deep hole drilling with standard affordable machine.

 

Novidrill400-II testing capability of the small 0.2 mm  diameter drilling at a customers place.

 

HIGH-SPEED EDM DRILLING

Do you want to expand Your Hole making Capabilities? Look into our Novidrill range


In need of producing Smaller, Deeper, More Precise Holes?

Demand for smaller, deeper and more precise holes produced as fast and as consistently as possible has created a need for more advanced, new Electrical Discharge Machine (EDM) drilling technology in hole making operations.

Here are some tips on how to select the EDM drilling system that will help your shop achieve these holes making goals.
  1. Look for an EDM system that is fast, reliable and simple to operate. It should have enhanced drilling capabilities for extremely small hole sizes, but at the same time maintain good surface finish quality and accuracy at greater depths. Considering some of to-day’s applications, it’s important to look for a system that can drill a 15-mm deep hole as small as 0,20 mm in diameter in hardened steel and at the same moment to be able to drill a cooling hole of 2,5 mm in diameter 250-mm deep in mould steel, and this with minute variations in size and straightness from its entrance to exit.
  2. Most experts recommend selecting an EDM drilling system that utilizes the latest in digital generator technology. Digital generator technology, gives EDM drilling machines more precise spark control. It is this functionality that also helps reduce electrode wear. For optimal productivity, the goal is to generate as many holes as possible or drill as deep as required using the least quantity of electrodes. Thus, the more a generator can help reduce electrode wear the better. Plus, less wear on electrodes allows them to cut faster and more accurately by eliminating the “bullet nosing” of their electrode tips.
  3. Seek out an EDM drilling system that can be operated by any person in the workshop, without any high-level programming skills. Simplicity is here the rule.
  4. High-quality surface finish capability is a must. A growing amount of shops now use EDM drilling machines for generating finished holes that will not require any secondary finishing operations.
  5. Keep in mind that uneven wear increases a drilling electrode’s tendency to “walk” off centre, resulting in crooked and angled holes instead of straight ones. Because they help reduce wear, Supper high pressure coolant/flushing system thus prevent such a scenario and contribute to producing straighter holes and ones that can be held closer to size from top to bottom. For instance, a 200 mm-deep hole drilled with a 1 mm electrode on a digital generator-equipped EDM system will vary in size from top to bottom, usually less than 0,025 mm.
  6. Find an EDM drilling system that provides control over heat-affected zones for generating surface finishes comparable to those typically attained using a wire-type EDM. Such surface finishes are possible only with a super high pressure coolant/flushing system with sufficient debit to take the heat immediately away from the working zone.
  7. High pressure dielectric fluid is one of the most important factors, which is usually supplied to the gap through the bore of tubular electrodes.  The use of a pneumatic intensifier pump results in drilling parts up to 50% faster and with lower operating costs as much as 40%! Pneumatic activated high-pressure pumps produce 30% more pressure than a standard water jet pressure pump, resulting in a 40-50% increase in productivity for many materials. Compared to a water jet pump, typical operating pressures uses 30% less water, 30% less power, and up to 50% less electrode consumption, resulting in a 40% reduction in operating costs. Being green with energy does not only spare the nature but also your wallet.
  8. Request a non conductive table of high precision, by preference Granite.  A work-table from granite offers big advantages:
    • You can’t drill into the table
    • table resist to corrosion of the dielectric liquid: doesn’t get rusty
    • keeps the super precision and guarantees a better flatness
    • parts cannot be welded to the table due to bad contact with table

Conclusion

Today’s technically advanced EDM drilling systems essentially put hole making accuracy in the technological hands of the machine tool. Modern EDM drilling systems dramatically increase a shop’s capability to consistently produce tiny holes that are even more accurate and with higher quality surface finishes.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Our Novidrill-400-II is offering on all these requested criteria a positive answer and this for a VERY attractive budget!

Do you want to expand Your Hole making Capabilities?


In need of producing Smaller, Deeper, More Precise Holes?

HIGH-SPEED EDM DRILLING

Demand for smaller, deeper and more precise holes produced as fast and as consistently as possible has created a need for more advanced, new Electrical Discharge Machine (EDM) drilling technology in hole making operations. Here are some tips on how to select the EDM drilling system that will help your shop achieve these holes making goals.

  1. Look for an EDM system that is fast, reliable and simple to operate. It should have enhanced drilling capabilities for extremely small hole sizes, but at the same time maintain good surface finish quality and accuracy at greater depths. Considering some of to-day’s applications, it’s important to look for a system that can drill a 15-mm deep hole as small as 0,20 mm in diameter in hardened steel and at the same moment to be able to drill a cooling hole of 2,5 mm in diameter 250-mm deep in mould steel, and this with minute variations in size and straightness from its entrance to exit.
  2. Most experts recommend selecting an EDM drilling system that utilizes the latest in digital generator technology. Digital generator technology, gives EDM drilling machines more precise spark control. It is this functionality that also helps reduce electrode wear. For optimal productivity, the goal is to generate as many holes as possible or drill as deep as required using the least quantity of electrodes. Thus, the more a generator can help reduce electrode wear the better. Plus, less wear on electrodes allows them to cut faster and more accurately by eliminating the “bullet nosing” of their electrode tips.
  3. Seek out an EDM drilling system that can be operated by any person in the workshop, without any high-level programming skills. Simplicity is here the rule.
  4. High-quality surface finish capability is a must. A growing amount of shops now use EDM drilling machines for generating finished holes that will not require any secondary finishing operations.
  5. Keep in mind that uneven wear increases a drilling electrode’s tendency to “walk” off centre, resulting in crooked and angled holes instead of straight ones. Because they help reduce wear, Supper high pressure coolant/flushing system thus prevent such a scenario and contribute to producing straighter holes and ones that can be held closer to size from top to bottom. For instance, a 200 mm-deep hole drilled with a 1 mm electrode on a digital generator-equipped EDM system will vary in size from top to bottom, usually less than 0,025 mm.
  6. Find an EDM drilling system that provides control over heat-affected zones for generating surface finishes comparable to those typically attained using a wire-type EDM. Such surface finishes are possible only with a super high pressure coolant/flushing system with sufficient debit to take the heat immediately away from the working zone.

Conclusion

Today’s technically advanced EDM drilling systems essentially put hole making accuracy in the technological hands of the machine tool. Modern EDM drilling systems dramatically increase a shop’s capability to consistently produce tiny holes that are even more accurate and with higher quality surface finishes.

Check out our perfect and affordable solution : novidrill 400-II new model with granite table, super high pressure coolant pump.

 

http://www.novickedm.com/products/?categ1=High%20Speed%20Drill%20EDM&categ2=Small%20Holes&id=29&language=en

novidrill EDM drilling

7 Reasons Why You Should Invest In A High-Speed EDM Drilling machine : Novidrill


Electrical Discharge Machining

EDM represents the thermal erosion process that removes metal by a series of recurring electrical discharges between a cutting tool acting as an electrode and a conductive workpiece, in the presence of a dielectric fluid. In the gap between the electrode and the workpiece occurs a voltage discharge and parts from the workpiece vaporize from the heat of the discharge, this particles ar washed from the gap by the dielectric fluid that flushes continuously.  High-Speed EDM Drilling is used to produce very small and accurate parts as well as large items.

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