Help with Atlas 7B Shaper

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alcostich

alcostich

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Joined
Aug 7, 2007
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Location
Upstate New York
Because my mill was tied up with another project, I decided to use my shaper to make a nut for a quick change tool post.
Encountered a problem I could use some help or advise with.
I can adjust the length of stoke but I can't set the position of the ram. In order to turn the adjusting screw (S7-103),
I have to use a big wrench.
That ain't right.
I've tried loosening the ram plates and the ram gibs.
No joy.
What am I missing?

Seems the last time I used the shaper, I could fairly easily turn the adjusting screw (S7-103) with the crank (S7-100).
I'm concerned that if I put too much torque on the screw (S7-103), I'll strip the bevel gears on it and on the screw (S7-37).

Thanks.

Alan
 
alcostich said:
Because my mill was tied up with another project, I decided to use my shaper to make a nut for a quick change tool post.
Encountered a problem I could use some help or advise with.
I can adjust the length of stoke but I can't set the position of the ram. In order to turn the adjusting screw (S7-103),
I have to use a big wrench.
That ain't right.
I've tried loosening the ram plates and the ram gibs.
No joy.
What am I missing?

Seems the last time I used the shaper, I could fairly easily turn the adjusting screw (S7-103) with the crank (S7-100).
I'm concerned that if I put too much torque on the screw (S7-103), I'll strip the bevel gears on it and on the screw (S7-37).

Thanks.

Alan
Click to expand...
Do you have the atlas shaper instruction book? If not I could email you the pages on adjustment. Regards Bill
 
Under operating instructions, it says ram position is adjusted by turning the stud on the rear of the ram after loosing the lock handle. If you have a blow up of the ram and levers assembly there is a set of bevel gears that translate motion and adjustment to the ram lever which accepts the threaded rod attached to the gears. It's possible the set screw on one of these gears is loose. If the gears are binding, this could prevent you from positioning the ram.
 
Hopsteiner, post: 318392,
Thanks.
I do have that picture.
>>>>It's possible the set screw on one of these gears is loose.
There appears to be only one set screw. And do get at it would require some serious disassembling.
Something is binding someplace in there.

Alan
 
I know thats going to be difficult. I'm not near my shaper now. I'm wondering if you can reach up through the access opening and wiggle the bevel gear. If you can't, than its tight. If a machine hasnt been used for awhile in a cold garage things seize up to a certain extent. You could put your wrench on the adjustment nut with your other hand through the access opening and see if you're getting even some small movement. Whatever you do don't force it. Parts for this machine are hard to come by as you well know.
 
Alan, I just took a look at my shaper through the access opening with a mirror. Run the ram full forward. The gear on S7-37 has a drive pin which if you look down a small hole behind the square end of the upright shaft, S7-103. You should be able to see this drive pin holding S7-118 in place. This pin may be broken causing your problem. The gear may just be spinning on the shaft. The access hole in the top of the ram allows you to drive the pin out and put a new one in. This all without removing the ram. let me know if this helps. Bill
 
Alan, what I find interesting is that on my parts blow-up it does not show a drive pin holding the horizontal bevel gear in place. They may have used set screws on some and pins on others. They're probably all not assembled the same. Well, that's all I can possibly say on this. I'm presently trying to get my 1946 Round Ram Bridgeport up and running. Good luck with your project. Bill
 
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