Ram/Sink/Plunge EDM Services

Electrical Discharge Machining Producing Fine Detail and Intricate Shapes

Owens Industries specializes in Electrical Discharge Machining work, offering Ram/Sink/Plunge EDM services capable of producing fine detail/surface finish work, precision gears and intricate cavities/shapes.

Ram/Sink/Plunge Electrical Discharge Machining

Sinker EDM vs Wire EDM

Sinker EDM and Wire EDM both produce a spark using an electrode to cut or erode the material being machined. In both processes, the spark created by the electrode never comes into physical contact with the machined part, maintaining the integrity of the material being cut and resulting in a burr-free finish. The difference between Sinker EDM and Wire EDM lies greatly in the type of electrode used in each process, the fact that no pre-drilled hole is required with Sinker EDM, as well as the 3D capacities the Sinker EDM is capable of achieving (Wire EDM only has the capabilities to produce 2D parts). Sinker EDM can produce parts that Wire EDM cannot – components that do not need to be cut all the way through.

What is Sink/Ram/Plunge EDM?

Sink EDM, Ram EDM, and Plunge EDM are one and the same. This EDM process uses custom machined electrodes (typically made from copper, graphite or tungsten) which creates a spark between the material being machined and the electrode. The spark erodes materials in the EDM tools pathway, creating the complex cavities or shapes desired.

Industries Commonly Utilizing Sink/Ram/Plunge EDM:

Medical EDM Contributing to the Future of Medicine

The growth of the medical industry has no end in sight. As the population grows and technology advances more and more medical products are put on the market; with new innovations being created every day. Product engineers and manufacturers need an EDM Shop they can trust. The majority of our clients experience reduced costs when switching to Owens – our state-of-the-art equipment allows our CNC programmers to get medical parts machined in less time with more accuracy, reducing the number of bad parts. Whether your surgical component requires micron tolerances, fine surface finishes, thin walls or any intricacy in between, we will deliver as expected.

Industries served by Owens

Sink/Ram/Plunge EDM is used across a number of industries to produce precision-dependent components with fast manufacturing times and repeatable accuracy, including:

Owens Industries serves these industries and more, consistently exceeding industry quality standards and the capabilities of normal CNC machine shops. We are happy to take on prototype or production machining work.

Getting the Most from 5-Axis Machining

Understanding the full capabilities for 5-axis machining is the difference between an ordinary component and an extraordinary one. CNC machinists trained to use CNC machines may not have the knowledge or expertise to get the most from 5-axis technology, but Owens Industries is different. We have an arsenal of the best 5-axis machinery on the market produced by the best brands and are always operated by expert machinists who know how to utilize 5-axis technology for your particular components.

Owens uses the best CNC machines manufactured by AGIE, Hermle, DMG, Okuma and more. We have consistently delivered remarkable results using our 5-axis machining services for multiple industries all over the United States.

Precision Gears Machined to Your Exact Specifications with EDM

Owens Industries uses Wire EDM and Sink/Ram EDM to manufacture precision gears with Micron Tolerances, including worm gears and pinion gears.

Please note that Owens is not a gear house. We do not manufacture “normal” gears. We machine only small gears that need accuracies of a few microns. If tolerances for your gears are more than 30 microns, or if the size of your gear is larger than a few inches, we would not be a good fit.

The required patterns, fixtures and blanks used to produce precision gears are all manufactured in-house at Owens, using our precision calibrated 5-Axis Machining Centers and Super Precision Lathes. It is this complete in-house control over all of the required CNC machining processes which allows us to manufacture gears with such extreme precision. Our commitment to ultra-precision gear work limits our gear sizes to be small.

Owens Experience With Gears for the Medical Industry

Owens has a long history of producing precision gears. We have manufactured AGMA Class 11 gears for the medical industry. Class 11 gears have tolerances in the range of +/- 0.0003” on the pitch diameter. We have also taken on projects for even more precise AGMA Class 12 gears that require 1-micron tolerance. In addition to these gears, we also have experience producing pinion gears and linear gear patterns with extreme accuracy. Typically, the material used for gears in the medical industry is 17-4 Precipitation Hardened Stainless Steel. We can certainly work with other alloys per your design requirements.

Ram/Sink/Plunge EDM FAQ

EDM uses a high intensity spark and electrode to precisely remove metal using a computer controlled system. The two types of EDM machining are sinker and wire EDM.
Sinker EDM uses a custom electrode to plunge into the material. Wire EDM cuts through the material with an electrode wire. Both methods utilize the same means of eliminating material. Wire EDM cuts all the way through the material, while sinker EDM is designed to only go part of the way through the piece.
Sinker/ram/plunge EDM can machine any conductive material, including aluminum, carbide, brass, copper, rhenium, steel, titanium and more.
Electrical Discharge Machining (EDM) produces a high-powered spark in a process similar to welding but designed to eliminate material instead of joining the material.
EDM allows for a very fine almost mirror-like finish when multiple skimming passes are made.

Conductive materials machined by Sinker EDM:

Sinker EDM applications:

  • Aluminum
  • Brass
  • Copper
  • Hastelloy
  • Inconel
  • Kovar
  • Rhenium
  • Stainless Steel
  • Titanium
  • Blind Cavities
  • Intricate Details
  • Sharp Corners
  • Fine Surface Finishes
  • Thin Walls
  • Machining threads into hardened parts
  • Blind Keyways
  • Internal Splines, Squares and Hexes
  • Tolerances can be held to .0001”

Components We've Built Using Sinker EDM:

Part Application Industry Material Specific Feature
Objective Head Catheter Head Medical 17-4PH Steel EDM Sink with Miniature Copper Electrodes
Nut, Inner Race Shaft Control Oil & Gas M50 Vim-Var IAW AMS 6491 Sink Internal Ball Screw Thread

Precision Gears Machined to Your Exact Specifications with EDM

Owens Industries uses Wire EDM and Sink/Ram/Plunge EDM to manufacture precision gears with Micron Tolerances, including worm gears, pinion gears and more.

Contact our EDM Machine Shop for information on our precision manufacturing experience.

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