[modeleng] Re: Is the list quiet or has my name dropped off the list ?
- From: "Jessie Livingston" <fernj1@xxxxxxxxxxx>
- To: <modeleng@xxxxxxxxxxxxx>
- Date: Wed, 2 Jun 2010 10:51:37 -0500
I used my little Logan 7" shaper to cut keyways as well as internal splines.
We had a large internally splined coupling to strip on the hydrostatic drive
on our sawmill carriage feed. This was between the hydrostatic pump and
150hp motor. Mill would not operate w/out it of course so I built up the
splined area with 7018 electrodes and bored it out a bit. I then
Afro-engineered an index device by purchasing a sprocket with the proper
number of teeth and fastening it to the coupling. A setscrew held the
sprocket while I cut the splines one at a time. Worked a treat as you
Aussies and Brits say and I had the milll running the next morning.. The
coupling was still in service several years later when the hydrostatic drive
was replaced by a hydraulic cylinder feedworks that operated via a large
hydaulic pump, but this was after I retired. The hydraulic cylinder was 35
feet long and actually there were two of them. One pushed the carriage one
direction and the other one pushed it back the other way. No internal
pistons, the piston rod was several inches in diameter and only required
packing glands on the cylinder ends.
Jesse in 88° F Troy Tennessee located 400 miles inland from the BP oil
spill!
----- Original Message -----
From: "Phill Smith" <steam@xxxxxxxxxxxxxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Wednesday, June 02, 2010 4:46 AM
Subject: [modeleng] Re: Is the list quiet or has my name dropped off the
list ?
> G'Day Tony,
>
> Whether it's steel or CI, it will still flex. Most shapers have a support
> for the front of the table, to help remove the flex. The flex comes from
> everywhere. Column casting, cross feed carriage, table itself. Table flex
> can be the worst problem, as it is generally a hollow casting and some
> manufacturers made them a bit thin to reduce costs, and it's almost
> impossible to fix.
>
> I have an 1.25" thick angle plate that I use for slotting on my 10"
> shaper,
> and it flexes without the support straps on it. It's OK for general
> keyways
> (where there's clearance), but no good for splines.
>
>
> Cheers,
>
> Phill.
>
>
> ----- Original Message -----
> From: "Tony Wells" <oaksfield@xxxxxxxxxxxx>
> To: <modeleng@xxxxxxxxxxxxx>
> Sent: Wednesday, June 02, 2010 4:03 PM
> Subject: [modeleng] Re: Is the list quiet or has my name dropped off the
> list ?
>
>
>> Hello Phill, and thanks for this.
>>
>> The angle plate I am bidding for is an inch thick, so I do not expect
>> that
>> to flex or crack very much if at all. If I end up with angle iron instead
>> however, then I will weld some stiffening webs on. Either way, I will be
>> truing the top surface of whatever I end up using though.
>>
>> Regards,
>>
>> Tony.
>>
>>
>> ----- Original Message -----
>> From: "Phill Smith" <steam@xxxxxxxxxxxxxxxxxxxxxx>
>> To: <modeleng@xxxxxxxxxxxxx>
>> Sent: Wednesday, June 02, 2010 5:25 AM
>> Subject: [modeleng] Re: Is the list quiet or has my name dropped off the
>> list ?
>>
>>
>>> Tony,
>>>
>>> Make sure you put some heavy bracing across the corners, otherwise you
>>> will
>>> get either a large deflection or you could crack your angle plate.
>>> Once you have it all mounted to your satisfaction, don't forget to take
>>> a
>>> cut across it with the shaper. This was done to true the table up to the
>>> ram
>>> and cross slide.
>>>
>>> Cheers,
>>>
>>> Phill.
>>>
>>
>>
>> MODEL ENGINEERING DISCUSSION LIST.
>>
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>
> MODEL ENGINEERING DISCUSSION LIST.
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>
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