SpinOffs

A blog on what's new, notable, and next in turbomachinery

Posts about 5-Axis Machining

Increased Milling Capability and Capacity for Large 5-Axis Impellers

Increased Milling Capability and Capacity for Large 5-Axis Impellers

By Sean McDermott
Aug 30, 2019

Concepts NREC has added two additional Hermle 5-axis mills in our shop, and we’re excited  about the increased capabilities these new machines bring! In August of 2018 we received the  first of these...

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Designing Ruled Surfaces for Flank Milling

Designing Ruled Surfaces for Flank Milling

By Peter Klein
Mar 15, 2019

As discussed in my previous blog post, Flank Milling, How Hard Can it Be?, turbomachinery blades are commonly designed as ruled surfaces, with the goal of making manufacturing easier and faster with...

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Flank Milling - How Hard Can It Be?

Flank Milling - How Hard Can It Be?

By Peter Klein
Jan 4, 2019

 When designing compressors, engineers often use ruled-surface blades with the goal of making a shape that’s easily manufactured on a 5-axis machine.  Theses blades can be quickly machined in one...

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Yellow Ropes

Yellow Ropes

By Jim Miller
Aug 17, 2018

In the mid 1980’s, while serving in the Canadian Air Force, I had the good fortune, on one of my many adventures, to fly into Sondrestrom Air Base in Greenland. The Base is at the head of a beautiful...

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Are You a Smooth Operator? Different Approaches to Collision Avoidance in CAM Software

Are You a Smooth Operator? Different Approaches to Collision Avoidance in CAM Software

By Peter Klein
Aug 9, 2018

 

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How Our Shop Slashed Their Roughing Time in Half

How Our Shop Slashed Their Roughing Time in Half

By Christos Maninos
Feb 22, 2018

The guiding principle behind Concepts NREC’s Computer-Aided Manufacturing (CAM) software, MAX-PAC, is to simplify the task of creating efficient milling toolpaths for turbomachinery. Since we are...

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Shrouded or Open Impellers for Compressor Chillers - That is the Question

Shrouded or Open Impellers for Compressor Chillers - That is the Question

By Steve Kohr
Aug 2, 2017

One of the most important design choices facing a chiller compressor designer is whether to utilize open or shrouded impellers. The impacts of this verdict are wide ranging, which arguably makes this...

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Design Elements that Affect Machining Time in Turbomachinery

Design Elements that Affect Machining Time in Turbomachinery

By Mark R. Anderson
Mar 9, 2017

The primary options for laying out an impeller (i.e. flank milled versus point milled, open versus covered impellers, integral versus welded shrouds) determine the basic manufacturing process (see ...

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Manufacturing Methods Used for Turbomachinery

Manufacturing Methods Used for Turbomachinery

By Mark R. Anderson
Feb 22, 2017

There are two dominant manufacturing methods used to produce turbomachinery parts – Casting and 5-axis machining. This blog will explore some of the applications and restrictions of these two methods.

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