Free cutting steel has many advantages and is often used for its easy machinability. But these same malleability properties make roller burnishing and surface finishing difficult, as it can easily flake when pressure is applied.
Below, we’ll dive in to learn how Sugino’s Superoll tools helped a customer manage the machining challenges of working with free cutting steel.
Let’s start with the customer’s challenge: When they came to us for help reaching surface finish specs, we recommended Superoll MAC. Why?
The competitor’s tool that they were using was causing the free cutting steel to flake, and they could not achieve their Ra 8u roughness specification. And to add to the problem, the hole diameter was very small, only 0.157” with a 1.67” depth, limiting the range of tools available to fit the part. Two problems that needed a solution.
The Solution
Superoll MAC has an automatic tool diameter compensation function, which allows for consistent, even pressure. It automatically tracks the pre-hole diameter, delivering a stable finishing surface.
And it is compact enough to work in their automotive brake cylinder.
The compensating pressure of Superoll MAC had an unexpected bonus as well. It increased the longevity of the tool parts significantly:
Competitor’s tool life
- Roller – 9,800 (parts burnished)
- Mandrel – 16,000
- Frame – 59,000
Sugino’s Superoll MAC tool life
- Roller – 31,000 (parts burnished)
- Mandrel – 103,000
- Frame – 123,000
Problem, solved. Have your own challenge when it comes to machining? Bring it to us, and we’ll be glad to discuss ways to solve it. Or explore our broad range of Superoll tools to find the right fit for your situation.
Watch the Superoll MAC in action:
If you’re having surface roughness and roundness issues, talk to us. We may be able to meet your specs and exceed your expectations.
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