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Thread: Casting machining.
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21st April 2014, 02:05 PM #1
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Casting machining.
Pics of a mandrel casting I milled recently.
Was cast in 4140 steel.
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21st April 2014, 04:50 PM #2
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Nice... What sort of HBM is it?
Light red, the colour of choice for the discerning man.
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21st April 2014, 04:59 PM #3
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Interesting looking job, nicely setup.
I'm trying to guess what the part is for, some sort of cutting or drilling head?
Ray
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21st April 2014, 05:31 PM #4
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Part is a mandrel core that has three segment leaves fitted to it for roll steel strip.
Expands and roll strip onto, then compress and remove roll.
Core is pushed along shaft to expand and compress segment diameter.
Leaves are fitted onto tapered ramps.
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21st April 2014, 06:05 PM #5
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Any chance of a photo or two assembled and/or in action?
How gig is that piece? I can't find anything conclusive in the photos to really scale it to...Cheers,
Joe
9"thicknesser/planer, 12" bench saw, 2Hp Dusty, 5/8" Drill press, 10" Makita drop saw, 2Hp Makita outer, the usual power tools and carpentry hand tools...
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21st April 2014, 06:47 PM #6
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Unfortunately it went out to customer for assembly.
it was about 1600mm long and 400 dia.
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21st April 2014, 07:06 PM #7
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So about 3 times the size that I thought.....
Nice job, was it all done with carbide? Do steel castings get a hard skin on them like CI does?
Ew1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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22nd April 2014, 07:29 AM #8
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Great job Clubman.
Looks like there were multiple setups to machine the various faces. Did you turn the ends on a lathe first or did all the work on a boreing mill, would have been nice to see a set of pictures of each step of the operation.
Regards,
Keith_W
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22nd April 2014, 08:39 PM #9
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Nice home workshop
. Interesting job, do you do this sort of thing often??
Kryn
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22nd April 2014, 10:30 PM #10
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Have machined a few different designs over the years.
Followed this one with a slightly smaller cast iron version.
Being cast steel it didn't really have a tough skin to machine through, although most cutters were carbide because of toughness of material.
End diameters and bore were machined first, then outside machined concentric to bore.
Castings can be fun to machine sometimes.
