CNC Machining of Billet Cylinder Head

Here the solid aluminum block is being rough machined in the CNC Machining Centre. As you can see, it "likes" to work with this material and hoggs through it without any effort. Were just roughing the outside profile and is being run somewhat conservatively (8000 rpm)

Category:

Autos & Vehicles

Tags:

• CNC
• Machining

[Markitos203]

how did you guys machined the water passages?

[promach1]

@Markitos203 This is a air cooled motor

[Gracana]

@JohnxWaynexGacy That's what I'm wondering too. This head is for an air cooled engine, so they don't have to worry about that... But I'm designing a motor that will be water cooled, and it's impossible to mill the sort of coolant passages and pockets you'd find in a normal cast head. It's going to take some compromises and clever ideas to come up with something that will work.

[JohnxWaynexGacy]

I actually came to this video wanting to see how the coolant passages are machined. Is it even possible?

[btwbrand]

@Markitos203 Old comment, but a good question. Odds are there weren't any water passages put into this head. It's common to find race engines built for cool burning fuels such as alcohol without any water jackets, or to have their water jackets filled with some stiffening agent. The engine generally starts up, works hard for a few minutes and is then shut down. The added strength and freedom to shape intake ports beyond the limitations of engines components with water jackets is a strong plus.

[20GeneStarwind20]

@Galfonz no cause it would never be as caret

[1hyllek]

not so much.

[cncit]

Nice! Would sound better with climb milling only and not bi-directional side cutting!!

[Galfonz]

Wouldn't it be faster/cheaper/more effective just to cut it out with a saw? Say a table saw with carbide tipped blade?

[ke5hbd]

Listen to the spindle rpm's. I worked for a shop that loved to rough in rapid travel and max spindle rpm's.