The term swedged

M

mikebell

Member
I have a 1934 ford with mechanical brakes. Are the wheel studs pressed into the brake drums. The reason I ask this is because the term (swedged) was used in another post
What the heck is swedged?
 
It's a type of riveting. Metal from the shoulder is pressed down to lock the stud in it's hole and the two piece (drum and hub) together. this is done on a 20+ ton press using a tool that fits over the threads and rest on the shoulder of the stud with a backing piece under the new stud. Depending on whether the drum or hub is on top, there will be a recess in one that the upset metal is pressed into.
 
mikebell said:
What the heck is swedged?
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Hi Mike, the word "swedge" is a derivative of the word "swage", basically it's about "forcing" metal, using an outside source, to conform to a specific shape!

It is the exact same procedure required when installing wrist-pin bushings in connecting rods, including the Flathead rods!

The tool actually "forces" the newly installed bronze bushing into the machining grooves left by the cutter used to bore the original hole.

We start by "heating" the pin-end of the rod (old bushing already removed), pressing in the new bushing (goes in relatively easy due to the heat), running the "swedging" tool thru, and then finish honing the bushing for the desired pin clearance!

This is one area for "swedging". There are many others.

Thanks, Gary in N.Y.

P.S. All the rod work above here gets done on a Sunnen rod machine, including the "swedging"! Sunnen has the tooling to get it all done the "right" way.
 
FlatheadTed said:
The v8s are just pressed in no swaging Ted
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That is some really bad info! The V8 studs are swaged through 1948!! There MAY be some '32-'35 cast fronts with the windows that are one piece, and fitted with UN-SWAGED, press-in studs.......MAYBE! DD
 
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The sledging expands and clamps the stud to the hub- drum making them an assembly-- on the model A the stamped hub and drum need to be riveted together for strength, unlike modern drums that center on the hub the seedbed studs keep the drum centered too

On the press I have it is just under 25 tons, at 20 tons there is still looseness though it seems to be swedged

The 36 drums are swedged I know

Baisically the sledging process swells the diameter to fill the hole and clamps the pieces together
 
The 39 to 48 drum/hub can be put together without swaging the studs if the right studs are used but they sure didn't come from Ford that way.

The term swage refers more to a tool that is used to shape metal so just about any tool that is used for forming metal to a different shape can be refered to as a swage. The term swaged can be used to refer to any metal item that has had its shape altered with some form of a swaging tool. A lot of aircraft parts are swaged with various metal locking features to hold parts securely together. Riveting is a form of swaging process but we have different tool names to get more specific about those processes.
 
Hi guys, I have experience as a Tool & Die / machinist who built many Swage tools in the @ GE's Electrical Switchgear Factory in '60's & '70's. Pretty much to some degree all are right. The most correct is from Gofast Gary. Many different types of swaging or swedging. Two major differences, cold swedging or hot. It's more a process of moving metal changing the shape for many different application. On the studs on the brake drum application the tool simply take the stud material and reshape so it becomes stronger than a simple press fit actually moving the softer stud metal cells at a molecular level with surface material actually combining into the cast iron pores. Other applications change shape transitioning for example from round pipe to a square or octagonal or other shapes. Think that gives a good discription without trying to cover all applications. Sorry to be so wordy��
 
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