Bucking bar and vice

[mhorowit]

New to riveting here.

Reading on basics show the impact on the manufactured head is
transmitted along the rivet and forces the bucking bar off the
bucktail. It then slams back, causing the rivet shaft to begin to
deform.

Because the bucking bar needs to move, does this mean it can not be
clamped in a vice? - Mike

[John[_9_]]

On Sep 5, 7:58*am, mhorowit > wrote:
> New to riveting here.
>
> Reading on basics show the impact on the manufactured head is
> transmitted along the rivet and forces the bucking bar off the
> bucktail. It then slams back, causing the rivet shaft to begin to
> deform.
>
> Because the bucking bar needs to move, does this mean it can not be
> clamped in a vice? - Mike

You could clamp it in vice. There is a process called back riveting
in which the rivet gun and a flush set is used to directly upset the
buck tail while the manufactured head is held against the bucking bar;
I have seen it used when someone is riveting flush rivets in thin
skins and the flush head is held against a flat plate. This would be
similar to what you propose. The key is to keep the slamming effect
to a minimum by keeping pressure through the rivet from the gun to the
bucking bar. Once the bar or the set or the rivet really move around
that is when you will have smiles at best or tool strikes at worst.

John Dupre'

[John Kunkel]

"mhorowit" > wrote in message
...
> New to riveting here.
>
> Reading on basics show the impact on the manufactured head is
> transmitted along the rivet and forces the bucking bar off the
> bucktail. It then slams back, causing the rivet shaft to begin to
> deform.
>
> Because the bucking bar needs to move, does this mean it can not be
> clamped in a vice? - Mike

The "slam back" of the bucking bar is classroom theory, in reality a
vice-mounted bucking bar will make the same shop head as a hand-held bar
(try it).

Picture a bulldozer pushing a Mercedes into a concrete wall, same process as
when using a hand-held or pneumaric rivet squeezer.

[Orval Fairbairn[_2_]]

In article
>,
mhorowit > wrote:

> New to riveting here.
>
> Reading on basics show the impact on the manufactured head is
> transmitted along the rivet and forces the bucking bar off the
> bucktail. It then slams back, causing the rivet shaft to begin to
> deform.
>
> Because the bucking bar needs to move, does this mean it can not be
> clamped in a vice? - Mike

I would not clamp my rivets in a vice. What kind of vice do you have in
mind?
Gambling?
Drinking?
Sloth?
Gluttony?
Fornication?

Or, do you mean "vise"?

--
Remove _'s from email address to talk to me.

[Bob Kuykendall]

On Sep 5, 4:58*am, mhorowit > wrote:

> Because the bucking bar needs to move, does this mean it can not be
> clamped in a vice? - Mike

Not in my experience, and I would dispute the assertion that the
bucking bar actually has to move. I've done plenty of rivets with a
bucking bar clamped in a vise, and have found it a perfactly
reasonable way to go. The dynamics are a bit different than with the
bucking bar held by hand, but plenty workable.

Where I found it necessary to control the dynamics of a bucking bar, I
constructed a machine that uses a Bilstein shock absorber to rebound
and reposition the bar. That was for riveting HP-18 sailplane box
spars. There's a page about it at Wayne Paul's Screder Sailplane
Designs web site:

http://www.soaridaho.com/Schreder/Construction/Spar_Riveting_Tool.html

Thanks, Bob K.

[Dan[_12_]]

Orval Fairbairn wrote:
> In article
> >,
> mhorowit > wrote:
>
>> New to riveting here.
>>
>> Reading on basics show the impact on the manufactured head is
>> transmitted along the rivet and forces the bucking bar off the
>> bucktail. It then slams back, causing the rivet shaft to begin to
>> deform.
>>
>> Because the bucking bar needs to move, does this mean it can not be
>> clamped in a vice? - Mike
>
> I would not clamp my rivets in a vice. What kind of vice do you have in
> mind?
> Gambling?
> Drinking?
> Sloth?
> Gluttony?
> Fornication?
>
> Or, do you mean "vise"?
>

I have an assortment of vises for various purposes. I guess my vice
is vises? Or vice versa?

Dan, U.S. Air Force, retired

[jerry wass]

Dan wrote:
> Orval Fairbairn wrote:
>> In article
>> >,
>> mhorowit > wrote:
>>
>>> New to riveting here.
>>>
>>> Reading on basics show the impact on the manufactured head is
>>> transmitted along the rivet and forces the bucking bar off the
>>> bucktail. It then slams back, causing the rivet shaft to begin to
>>> deform.
>>>
>>> Because the bucking bar needs to move, does this mean it can not be
>>> clamped in a vice? - Mike
>>
>> I would not clamp my rivets in a vice. What kind of vice do you have
>> in mind? Gambling?
>> Drinking?
>> Sloth?
>> Gluttony?
>> Fornication?
>>
>> Or, do you mean "vise"?
>>
>
> I have an assortment of vises for various purposes. I guess my vice is
> vises? Or vice versa?
>
> Dan, U.S. Air Force, retired

The man is truly wice beyond his years!!

[Dan[_12_]]

Jerry Wass wrote:
> Dan wrote:
>> Orval Fairbairn wrote:
>>> In article
>>> >,
>>> mhorowit > wrote:
>>>
>>>> New to riveting here.
>>>>
>>>> Reading on basics show the impact on the manufactured head is
>>>> transmitted along the rivet and forces the bucking bar off the
>>>> bucktail. It then slams back, causing the rivet shaft to begin to
>>>> deform.
>>>>
>>>> Because the bucking bar needs to move, does this mean it can not be
>>>> clamped in a vice? - Mike
>>>
>>> I would not clamp my rivets in a vice. What kind of vice do you have
>>> in mind? Gambling?
>>> Drinking?
>>> Sloth?
>>> Gluttony?
>>> Fornication?
>>>
>>> Or, do you mean "vise"?
>>>
>>
>> I have an assortment of vises for various purposes. I guess my vice
>> is vises? Or vice versa?
>>
>> Dan, U.S. Air Force, retired
>
> The man is truly wice beyond his years!!

Vise guy.

Dan, U.S. Air Force, retired