Internal grinding machine

Details Internal grinding machine Internal grinding machine

1988-04-11

1990-01-30

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51215HM, B24B 4722

Patent

active

048964611

ABSTRACT:
In an internal grinding machine of the type in which a workpiece is supported by three contact points by a fixed shoe and two rolls, the present invention facilitates correct feed and discharge of workpieces one by one without regard to the diameter of a workpiece. This is made possible by furnishing an internal grinding machine with a workpiece guide plate having a V-shape projection at its underside by the side of an upper roll in such a manner that the workpiece guide plate can swing up and down. When a workpiece is fed, the workpiece temporarily pushes up the V-shape projection, then reaches the end of the shoe. And it is pushed downward at the end of the shoe by the end portion of the workpiece guide plate, and is fed into the support space. When a finished workpiece is pushed by the workpiece newly fed in the manner as described above and discharged from the support space, the finished workpiece temporarily pushes up the said V-shape projection and is discharged.

REFERENCES:
patent: 3158970 (1964-12-01), Lockwood
patent: 4616448 (1986-10-01), Nagata

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