Hi, it’s Morio!

Welcome back to Morio’s blog, “Dig Here, Bowwow!!”
We’ve been diving deep into the bed structure of our TF series spring machines.

And now… it’s time to move on!
Starting today, we begin the Frame Edition!

🧱 What’s the Role of the Frame?

In a spring coiling machine, the frame plays a really important role!

Its main functions are:

• To serve as the foundation for each processing unit (like feeding, coiling, bending, and cutting)
• To absorb and distribute shocks and vibrations that occur during operation

In other words, it’s the unsung hero that supports stable processing and high repeatability precision!

🧩 What’s the Frame Structure Like in the TF Series?

The TF series frame is made of two cast-iron plates—front and rear.
These are securely mounted on top of the bed we talked about last time, forming a well-balanced overall structure.

And of course, there are plenty of technical points hidden in here too!

🏭 Wait, What Exactly Is “Cast Iron”?

Great question! Let’s break it down here!

Cast iron is a material made by melting metal, pouring it into a mold, and letting it cool and solidify.

Thanks to this method:

• You can easily make complex shapes in one piece
• Even large and heavy parts can be formed in a single shot

That’s why it’s so widely used in machine frames!

⚙️ TF Frames Use “FC250”

The material used in the TF series frames is a type of cast iron called FC250.
It’s also known as gray cast iron, and one of its key features is that it contains 3–4% carbon.

(By the way, most of that carbon is present as graphite, or black carbon flakes embedded in the metal!)

🟢 The Great Things About Cast Iron (FC250)!

• Excellent vibration damping!
  → It reduces chatter during machining—super important! ✨
• Resistant to heat!
  → It won’t warp even under high temperatures 💪
• Highly wear-resistant!
  → So it lasts longer, making machines more durable!
• Easy to machine!
  → Complex shapes, mounting surfaces, and chamfering? Bring it on!

🔴 But… Cast Iron Has Its Challenges

Of course, it’s not all roses.

Here’s a big downside: cutting FC250 produces a lot of carbon dust!

That black graphite powder:

• Can contaminate sensors and motors in the machine used to process the frame
• Can get inside machining equipment and…
• Cause serious malfunctions over time 😱

So yes, it’s a tricky material that gives our partner companies a real headache sometimes 💦

That said, the foundry we work with is top-notch—truly skilled and experienced. We owe them a huge thank-you!

And just so you know…
Even here in Osaka, which is famous for its metalworking industries, it’s getting harder and harder to find good foundries.

That makes our partnerships even more precious.

✨ What’s Next?

Next time, we’ll dig even deeper into how the frame is designed and manufactured!

So don’t miss it!

See you again soon on “Dig Here, Bowwow!!” 🐾

This blog is created with the support of generative AI.