An end mill is a type of milling cutter. It is distinguished from the drill in its application, geometry, and manufacture.
...and here's the segment from "How It's Made" that covers the more general principles of making a HSS end mill. You can see that OSG has a more advanced process for their carbide end mills.
Mark Your calendar: May 10, 2016 and join us in Los Angeles for Aerospace Composites & High Temperature Alloys Training
by David Aly, Aerospace Specialist, OSG Tap & Die
Just because you’ve tried one forming tap, doesn’t mean you’ve tried them all. We had the recent opportunity to prove that OSG forming taps are better than the rest.
As a supplier of custom fabricated metal products and machinery, one of our customers approached us wanting to get better chip control during their tapping operation. Located in Winona, Mississippi, they have a 92,500 square foot manufacturing facility for producing fuel tanks, hydraulic tanks and custom designed machining fixtures.
After discussing the customer’s chip control needs, I recommended OSG’s EXOTAP® NRT® Forming Tap, a more stable, thread rolling tap that makes threads by compressing the work material without creating chips. Because no chip is produced, breakage due to chip packing and bird nesting is eliminated.
The EXOTAP® NRT® also has significantly reduced friction resistance because of its special threading design and surface treatment. Made from VC-10 Powdered Metal High Speed Steel, this forming tap has a longer tool life when tapping difficult to machine materials like carbon steels, alloy steels, stainless steels and aluminum alloy.
A few days later, I called to check in on their progress. William enthusiastically explained that he was still running the same tap. He had lost count of the number of holes produced but assured me that it was well over 1,000 holes! After such a successful run with the first test tap, he purchased more of the test size, now truly convinced that all forming taps are not created equal.
Next Generation Tooling is excited to offer some new services coming in 2015!
Below is a very fast video of our new training series on Tapping which we can present to your manufacturing team at your site.
It's a comprehensive overview of screw thread terminology, thread forms, fundamentals of threads, classes of fit, Tap basics, types of chamfers, the tapping process,tap types, screw thread inserts, helix angles, core diameters, re an hook angles, thread reliefs, pitch tolerances, H limits, Tap substrates, Surface treatment and coatings, tapping speeds, tap drill sizes.
Understanding tool geometry and selecting the right tap for different workpiece materials can help take the anxiety out of tapping operations.Many machinists have learned to dread tapping. The story goes something like this. They press cycle start and then step back because the machine is in control. If the tap should hit bottom, too bad; the cycle must be completed—no feed-hold is allowed here. If the wrong feed rate was programmed, tough luck; the feed rate override is disabled. What else is there to do but cringe as the tap enters the hole?
For example, lowering the chip load can eliminate premature wear on a tap. Defined as the load induced on any one cutting edge, chip load is typically controlled by altering the feed rate. As mentioned earlier, this is not possible when tapping but the chip load can be altered through tap selection.
OSG’s Hy-Pro tap is designed for vertical and horizontal CNC tapping. The VXL tap (left) has a fast spiral-flute design for vertical machining. The HXL tap, with a slower spiral to break up chips, is for horizontal machining.
For any questions about your specific tapping problems be sure and give us a call at 916.765.4227
Technical Support Blog
At Next Generation Tool we often run into many of the same technical questions from different customers. This section should answer many of your most common questions.
We set up this special blog for the most commonly asked questions and machinist data tables for your easy reference.
If you've got a question that's not answered here, then just send us a quick note via email or reach one of us on our CONTACTS page here on the website
Our technical section is written by several different people. Sometimes, it's from our team here at Next Generation Tooling & at other times it's by one of the innovative manufacturer's we represent in California and Nevada.