Is this the term for cutting the grooves inside a hole that mates to a splined shaft?.... Who does it?... In Phoenix?! How is the process performed?
I think he's talking about the grooves in a steering coupler etc.I don't believe thats called broaching, but I could be wrong.
Broaching?! What the hell is THAT? Only fooling. Blanch, Broach, it's all the same thing. OK, BROACHING. How is it done? ...thanks...
Adjustablejohnsons is right. Used in small to medium holes. Larger holes are more than likely machined . . . and this would be a larger hole than we'd be involved with in the hot rod world. What are you trying to do? If you need a keyway - single square cornered groove - it's easy to cut them on a small lathe.
I'll be laying out a couple of torsion arms in the near future. As of yet, I haven't found anything short enough. I could get an available race car part and cut it short but I may need to have the arm in a sweeping curve shape. My bars are 1" diameter (if I remember right). I'm really curious as to how it's done, regardless.
When a friend and I were about 18 we happened across a cookbook at his folks' house that had a recipe for some dessert with this instruction for blanching an ingredient: "First plunge nuts into boiling water..." Being teenagers we were sick with laughter for hours.
When you go to a machine shop and ask how much? You'll say "that is too much" that is called "*****ING". Running out the door is called "BOLTING".
There is also Blanchard Grinding. It is used to grind metal flat on a rotary table. They range in size up to a 200" table. Thats what I do for a living!
Splines on a inside diameter are usually cut with special machines. Broached ( slowly shaving away material) or cut with a hob. Look for machine shops that specialize in broaching.
AH! Now I get what you are trying to do. Yes broaching, Ellis Race cars should have the tool to do it for you since he makes his own torsion bar ends. Ellis Race Cars 602-278-0450 as to how it's done: http://www.millerbroach.com/broach_tools.html http://www.engineersedge.com/manufacturing/broaching_about.htm http://www.powertransmission.com/cgi-bin/newleads.cgi?Broaching%20Services
Yeah, they are and they ARE 1 inch bars BTW, I just looked at 'em again. I've got the adjustable stops/anchors for one end. As soon as I start mocking things up (frame, axle etc.), I'll know how the torsion arms will need to be shaped.
That's what I'm using. I found the arms on eBay...."vintage sprint". Get steel arms...and make sure they're for 1" splines. Most are 1 1/8".
Yeah, I've got the same stuff 'cept for the arms. I wasn't sure about aluminum and thought to probably run steel, in case. My bars are brand new Schroeder pieces. Are you going to suspend your car similarly? I'm running mine parallel with the frame rails. Similar to Lee Osborne's cool A/32 tub he built a while back.
Jeem asked, "Are you going to suspend your car similarly? I'm running mine parallel with the frame rails. Similar to Lee Osborne's cool A/32 tub he built a while back." Yessir....all four corners.
Blanching is also a machining process.. its is used when 2 surfaces need to be machined at the same time. a blanch grinder has 2 flat grinding wheels ( top and bottom) fixture the part and then machine. blanch grinding isnt used in the hotrodding world, but is very usefull in production. the process of cutting keyways is called broaching.... ive never cut splines.. i just buy that ****....
Cool, you'll have to keep us posted. I'll do the same but I've got two other projects that need finishing first....
It can be done with a broaching attachment on a bridgport or similar milling machine. If you have the right tool you can cut very small splines but its work and you should find someone competent, don't even know who you would ask in your neck of the woods. Some metals don't lend themselves to the process BTW.
Or in production methods: Broaching belongs to the chip forming method of metal cutting. The broach has a great number of cutting teeth arranged one after the other with a predetermined rise in successive teeth. The relative movement between work-piece and tool is rectilinear. Almost any shape of surface, internal or external, can be broached. The broached surface can be in relation to a previously finished surface. Two or more surfaces may be broached simultaneously, holding a close dimensional relationship between them. Irregular shapes and forms are also subject to broaching with ease. Broaching can be used for roughing, semi-finishing or finishing; or for all these three operations in one stroke. Broaching can also be said to be metal cutting with multi teeth tool. Where accuracy and m*** production is required to form shape such as square, spline, keyway, round hole, broaching is the only answer. The feed motion of the broach is compensated by the gradient of the cutting teeth. Why Broaching ? Broaching is one of the most productive and precise metal cutting operations performed today. Broaching is an Economical operation which is another advantage. Initial tool costs generally are higher, the cost per finished part is lower because of the high production rates broaching permits. Unskilled or semiskilled operators can be employed, further reducing operation costs. Special Features of Broaching : High Productivity. Can produce most intricate profiles. High degree of surface finish can be achieved. No further process is required for finishing. No manipulation of tool or work piece required. Normally one p*** operation. Operator skill becomes redundant. TOP
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