Showing posts with label kern pyramid nano. Show all posts
Showing posts with label kern pyramid nano. Show all posts

Monday, March 4, 2019

It takes (at least) two



Vacuum part holding: in-house work holding design

Our Kern Pyramid Nano was a custom built machine: the vacuum holding was added on as a special 'watchmaking' accessory. And, until now, we simply had no need to use it.  However, for the past couple of months Josh has been 'secretly' working on a vacuum fixture prototype which he showed me today. I got a lesson on air/oil separation, a Kern custom built compressor and pump, the new 9 mainplate holder - down to asymmetric seal. The first prototype is working fine, and he is now ready to scale it up. 

I've learned a lot – and, once again, it was obvious that neither a watchmaker nor a machinist can make a watch. It is a collaboration and collective effort of two completely different trades and tradesmen that creates a little miracle of mechanical engineering. 

Life is not fair: it is always the watchmaker who takes the credit for it all; it is his name on the dial - where a great deal of credit should really go to the clever, hard-working CNC machinist behind the scene. 

Congrats to all machinists - be proud and keep working hard- you are priceless!




Friday, August 24, 2018

The cutting edge of manufacturing

Today was an incredibly exciting day. 

Earlier this year I went to the Louis Belet factory in Switzerland. At the risk of succumbing to cliches, I would like to say that it was life altering. 


The organisation of the factory, the workplace culture, the care and commitment for on-time delivery, the massive investment into RnD, the pursuit for perfection in every day tasks and the seeming laser focus of every single machine operator, sales manager, design team member etc. Etc. It blew me away. If you ever have the opportunity to tour, please - do it.

On my tour I asked about something that I had seen at a trade fair the previous year, solid ceramic cutting tools. The response I got was interesting, a mixture of technical explanation and sales pitch, but surprisingly, very very little sales pitch. 


There was almost hesitation in Arnaud's voice when talking about these tools (Arnaud - the 3rd generation CEO of the family owned company) 


These tools were the venture into uncharted territory in this field. Ceramic tools have been made before, usually in the form of turning inserts for hard metals, but this was different. This was micro tooling specifically for high efficiency cutting in brass. Almost exclusively used in the watchmaking industry. The problem being that watch manufacturers usually aren't too willing to buy into new forms of tooling, and, therefore, very few people are willing to test these tools. We were.

The benefits? Almost no wear. The claim is that these tools last orders of magnitude longer than brass. Further, the surface finish should not degrade as quickly. 


This is due to the almost magical edge retention of the cutting surfaces.

The drawbacks? You need an extremely rigid and dynamic machine to use these tools. They don't withstand vibrations or shocks - think of how brittle your fine China dining set is. Yep. That's what we are cutting with. (Thank you Kern Pyramid Nano for the ability to use these tools!) I ordered these tools on Monday afternoon, they travelled around the world and arrived in Brookvale, in Sydney's northern beaches, on Friday morning. Amazing! 


The white is ceramic, grey- carbide.

Josh






Friday, March 23, 2018

What others call fine-gloss finish we call roughing



Yesterday we undertook a practical exercise; the roughing of a piece of 316L steel.  Roughing simply means removing the top layer of material rapidly in order to prepare a surface for machining.  In other words, think of it as levelling your block before starting the build of a house.  

The tool of choice was a 4mm end mill.  The machining was done in the Kern Pyramid Nano and it was Andrew and Josh's first job in the workshop.

After the milling operation the surface finish was so smooth and even that it left them speechless.  Actually it's so good that the process can be applied straight away to watch bridges and finish.  
We can only imagine what kind of surface we will achieve with a diamond or ceramic tool.  

Certainly the credit goes to the hydro-static guides of the Pyramid Nano.