OIL PUMPS GALORE!!! Machining
#82
Sorry I am late to the party on the actual production method. This thread has moved on from there. In any case, I am the sales manager for a CNC machine shop for the last 13 years. We also have three wire EDM machines. Before working here, I was a tool & die maker and used to program and run Wire EDM machines and CNC mills and lathes.
Enough background. When doing production quantities of wire EDM parts, we heat treat larger pieces of stock to whatever required hardness is needed and then surface grind for thickness. That way we do not have to machine individual pieces. If there are details machined into the flat parts of the product, we machine them into the bulk blanks first with CNC at set locations so that when we move to the same locations to drop the parts out of the blank in the EDM, locations of details are bang on. Plus, we do not have to fixture and machine individual parts. Saves labor and $. Also, heat treating larger blanks can cost less per part, unless the heat treat shop quotes by the pound. Then you are paying to heat treat the scrap. The other advantage to heat treating the large blanks is the parts can't be damaged or dinged when handled coming out of the heat treat oven. They are very malleable when being removed at $1600 degrees. They also can't warp in heat treat if you cut them after heat treating.
Enough background. When doing production quantities of wire EDM parts, we heat treat larger pieces of stock to whatever required hardness is needed and then surface grind for thickness. That way we do not have to machine individual pieces. If there are details machined into the flat parts of the product, we machine them into the bulk blanks first with CNC at set locations so that when we move to the same locations to drop the parts out of the blank in the EDM, locations of details are bang on. Plus, we do not have to fixture and machine individual parts. Saves labor and $. Also, heat treating larger blanks can cost less per part, unless the heat treat shop quotes by the pound. Then you are paying to heat treat the scrap. The other advantage to heat treating the large blanks is the parts can't be damaged or dinged when handled coming out of the heat treat oven. They are very malleable when being removed at $1600 degrees. They also can't warp in heat treat if you cut them after heat treating.
#83
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I agree 100%
In this case I might be able to avoid the heat treatment altogether depending on which alloy I choose, so I might add on a few $$ to material cost, but save a lot in labor getting the piece true again. And it removes having to deal with another vendor. I want to order the alloy bring it right to the shop and an hour later have a finished heat pump.
In this case I might be able to avoid the heat treatment altogether depending on which alloy I choose, so I might add on a few $$ to material cost, but save a lot in labor getting the piece true again. And it removes having to deal with another vendor. I want to order the alloy bring it right to the shop and an hour later have a finished heat pump.
#87
Not a problem. Anyone ever have CNC machining or wire EDM questions or plastic injection molding or type of plastic questions (we do injection molding also), don't hesitate to ask.
I assure you I'm not going to ***** for any business here. Just want to return some help, as I will need a bunch in the future when my my Miata-based Locost 7 needs to breathe better after I get it up and running NA.
I assure you I'm not going to ***** for any business here. Just want to return some help, as I will need a bunch in the future when my my Miata-based Locost 7 needs to breathe better after I get it up and running NA.
#90
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Not a problem. Anyone ever have CNC machining or wire EDM questions or plastic injection molding or type of plastic questions (we do injection molding also), don't hesitate to ask.
I assure you I'm not going to ***** for any business here. Just want to return some help, as I will need a bunch in the future when my my Miata-based Locost 7 needs to breathe better after I get it up and running NA.
I assure you I'm not going to ***** for any business here. Just want to return some help, as I will need a bunch in the future when my my Miata-based Locost 7 needs to breathe better after I get it up and running NA.
I may drop you a message at some point
Matt
#91
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Good News guys, I have the oil pumps.
Thanks to Whaaamx5 these gears look perfect. and from looking at the size of the profile (bigger the easier) I can have these modeled by the end of the week. Then next week to talk to the ECM shop and material selection.
Thanks to Whaaamx5 these gears look perfect. and from looking at the size of the profile (bigger the easier) I can have these modeled by the end of the week. Then next week to talk to the ECM shop and material selection.
#93
sidenote, did the gears have any surface rust when they got to you? i was worried they could, i should have lubed then and sealed them in like a zip lock, i just didnt think about it, i hope they are as clean as they were when i send them...good luck bud
i know you'll keep us posted
#97
from miataroadster-Say you've paid our friends at Flyin' Miata $5,000-$10,000 to build you a motor-lol
looky here
http://www.miataroadster.com/gears.html
looky here
http://www.miataroadster.com/gears.html