Sheldon said:
Ah-ha! That was the missing link...the long dead center that you put in the other end
I am going to stick with the steady rest for now...but if gets cumbersome....?
Thanks Sheldon!
Chris
Facing "A" joint parts?
- Thread starter Tommy-D
- Start date
Ah-ha! That was the missing link...the long dead center that you put in the other end
I am going to stick with the steady rest for now...but if gets cumbersome....?
Thanks Sheldon!
Chris
Sligthtly off topic... I worked in a toolroom for a couple years with 5 Hardinge Tool Room lathes. One of them was brand new ($50,000 with Hardinge collets). Once you use these lathes, you just don't want to use any other. They are so smooth in operation and in part finish.
These lathes are generally used by toolmakers making precision components to repair manufacturing machinery or to make precision tools and dies that make other parts.
As a general purpose lathe, they are sometimes limited. You can't take huge cuts, because the belt will slip. The distance between centers is quite small for a lathe this big. Note how long the tailstock is. This lathe has about 20 inch centers, but it is as big and weighs more than most 36 to 40 inch lathes. This is one of the reasons it cuts so smoothly, because of its mass.
For cuemaking, it probably wouldn't be a good machine. Although the speces state 1.25 spindle hole, the collet closer reduces this quite a bit. And this lathe is almost always used with collets, so taking out the collet closer would be foolish. The spindle does not have a morse taper. It has a 5C collet taper ground into its end (one piece with the spindle, not a collet adapter like on other lathes). You also can't offset the tailstock.
The feed on this machine is a joy to use. It is not driven off of the headstock gearing, and is therefore completely independant of the spindle. There is an individiual motor for both the carraige and the cross slide. You just flip a lever and it starts the motor and moves your axis. You can also run the feed on both axes simultaneously (I think, its been 7 years since I used one). And, you can adjust the feed rate on the fly by turning the feed dial located on the extreme right of the bed.
There are lots more unique features on this lathe that really aid in speed changing, and especiallly threading.
If you ever have the chance, give one a try, if the machinist will let you
These lathes are generally used by toolmakers making precision components to repair manufacturing machinery or to make precision tools and dies that make other parts.
As a general purpose lathe, they are sometimes limited. You can't take huge cuts, because the belt will slip. The distance between centers is quite small for a lathe this big. Note how long the tailstock is. This lathe has about 20 inch centers, but it is as big and weighs more than most 36 to 40 inch lathes. This is one of the reasons it cuts so smoothly, because of its mass.
For cuemaking, it probably wouldn't be a good machine. Although the speces state 1.25 spindle hole, the collet closer reduces this quite a bit. And this lathe is almost always used with collets, so taking out the collet closer would be foolish. The spindle does not have a morse taper. It has a 5C collet taper ground into its end (one piece with the spindle, not a collet adapter like on other lathes). You also can't offset the tailstock.
The feed on this machine is a joy to use. It is not driven off of the headstock gearing, and is therefore completely independant of the spindle. There is an individiual motor for both the carraige and the cross slide. You just flip a lever and it starts the motor and moves your axis. You can also run the feed on both axes simultaneously (I think, its been 7 years since I used one). And, you can adjust the feed rate on the fly by turning the feed dial located on the extreme right of the bed.
There are lots more unique features on this lathe that really aid in speed changing, and especiallly threading.
If you ever have the chance, give one a try, if the machinist will let you