US 4,872,384 A · Tube cutting apparatus

Abstract

A tube cutting apparatus of the type in which jaws carried by relative reciprocal slides move into and out of clamping engagement with tubing, the clamped tubing is thereof notched at its upper periphery with a scarfing blade, and the notched tubing is thereafter severed with a guillotine blade. The scarfing blade and the guillotine blade each are secured to their respective holders by a cam pin which coacts with a cam surface to bring an eccentric portion of the cam pin into wedging coaction with the blade in response to rotation of the pin and firmly and wedgingly secure the blade to its respective holder. The blade may be removed from the respective holder by simply rotating the cam pin a fraction of a revolution and then withdrawing the blade. A new or reground blade is replaced in the respective holder by simple insertion into the holder and rotation of the cam pin a fraction of a revolution in the opposite direction.

Claims17

Dependent claims

A tube cutting apparatus comprising:

clamping means operative to clamp tubular stock;
a blade holder;
a blade;
a wedge member movable between a locked position in which said blade is locked to said blade holder and a released position in which said blade is released from said blade holder;
and
a clamping plate carried by said blade holder and positioned at one side face thereof against said blade;
said wedge member cammingly engaging the other side face of said clamping plate in response to movement of said wedge member to its locked position to clamp said blade upper portion between said blade holder and said clamping plate;
said one side face of said clamping plate and said blade having complimentary inter-engaging teeth which augment the locking action of said wedge member and provide selective vertical adjustment of said blade in said blade holder.

5 more elements

A notching blade assembly for notching elongated stock prior to a severing operation, said notching blade assembly comprising:

(A) a blade holder;
(B) a notching blade including a cutting portion and a handle portion mounted on said blade holder and defining a recessed cam face;
and
(C) a pin journalled in said blade holder and including an eccentric wedging surface engagable with said recessed cam face on said handle portion of said notching blade in response to rotation of said pin and operative when rotated to lock said blade to said blade holder.

1 more element

Dependencies are inferred from the claim text.

Tube cutting apparatus

Life of this patent

Tube cutting apparatus

Life of this patent

Abstract

Claims17