Tube cutting apparatus

A flying tube cutting apparatus comprising:

• a supporting base;
• a carriage assembly movably supported on said base;
• motor means including a rotating shaft having a rotor secured thereto intermediate the ends thereof and a stator secured within a motor housing and surrounding said rotor and first and second end plates secured to opposite ends of said motor housing, said end plates supporting said motor means on said carriage assembly;
• a rotatably cutting assembly supported by said motor means on said carriage assembly and including a rotatably housing engaging and directly removably connected to said rotating shaft and adapted to be directly driven thereby, said cutting assembly having a bore extending therethrough positioned substantially coaxially with the axis of rotation of said cutting assembly and cutting blade means radially movably disposed within said housing, said cutting blade means including a portion movable into said bore and into engagement with said workpiece so as to sever a predetermined length thereof;
• said rotating shaft having a bore extending therethrough, said bore being positioned coaxially with said bore in said cutting assembly whereby a workpiece may be moved axially through said motor means and said cutting assembly;
• means engageable with said workpiece to enable relative rotation between said workpiece and said cutting housing;
• a stop assembly adjustably supported on said carriage assembly and spaced from said cutting blade means a predetermined distance, said stop means being engageable by an end portion of said workpiece whereby predetermined lengths of stock may be severed from said workpiece by said cutting blade means, said predetermined length being substantially equal to said predetermined distance.

A tube cutting apparatus comprising:

• a supporting base;
• motor means supported on said base, said motor means including a rotating shaft;
• a rotatable cutting assembly directly connected to said rotating shaft and adapted to be driven thereby, said cutting assembly having a housing with a bore extending therethrough positioned substantially coaxial with the axis of rotation of said cutting assembly and cutting blade means radially movably disposed therein, said cutting blade means including a portion movable into said bore and into engagement with said workpiece so as to sever a predetermined length thereof;
• means engageable with said workpiece to enable relative rotation between said workpiece and said cutting assembly;
• said rotating shaft having bore extending therethrough, said bore being positioned coaxially with said bore in said cutting means whereby a workpiece may be moved axially through said motor means and said cutting assembly;
• and
• a stop assembly adjustably supported on said base and spaced from said cutting blade means a predetermined distance, said stop means being engageable by an end portion of said workpiece whereby predetermined lengths of stock may be severed from said workpiece by said cutting blade means, said predetermined length being substantially equal to said predetermined distance, said stop assembly including means engageable with said workpiece for exerting a lateral force thereon.

A flying cutoff machine for severing lengths of stock from a continuously moving workpiece comprising:

• a supporting base;
• carriage means movably supported on said base for reciprocable movement relative thereto;
• motor means including a rotating shaft having a bore extending axially therethrough, a rotor secured to said shaft intermediate the ends thereof and a stator secured within a motor housing and surrounding said rotor;
• non-rotatable clamp means supportingly secured to said carriage means, said clamp means being operable to clampingly engage said workpiece, one end of said motor means being directly secured to said clamp means to support said motor means on said carriage means;
• a cutting assembly secured directly to the other end of said motor means, and supporting said other end of said motor means on said carriage means, said cutting assembly including a cutting head engaging and removably directly drivingly connected to said rotating shaft whereby said motor means is operative to continuously rotationally drive said cutting head, said cutting head having cutting means movably disposed therein and a bore extending therethrough, said cutting head bore being positioned coaxially with said bore in said rotating shaft whereby said continuously moving workpiece may be fed through said bore to said rotatable head;
• and
• said cutting means being operative to sever said length of stock from said continuously moving workpiece.

A flying cutoff machine for severing predetermined lengths of stock from a continuously moving workpiece comprising:

• a supporting base;
• carriage means movably supported on said base for reciprocable movement with respect thereto;
• stop means adjustably secured to said carriage assembly, said workpiece being movable into engagement with said stop means and thereafter being operative to move said carriage assembly from a first position to a second position;
• motor means including a rotatig shaft having a bore extending axially therethrough, a rotor secured to said shaft intermediate the ends thereof and a stator secured within a motor housing and surrounding said rotor;
• non-rotatable clamp means supportingly secured to said carriage means, said clamp means being operable to clampingly engage said workpiece, one end of said motor means being secured to said clamp means to support said motor means on said carriage means;
• a cutting assembly including support means secured to the other end of said motor means and supporting said other end of said motor means on said carriage means and a cutting head engaging and removably directly drivenly connected to said rotating shaft whereby said motor means is operative to continuously rotationally drive said cutting head, said cutting head having a bore extending axially therethrough and disposed in substantially coaxially alignment with said bore in said rotating shaft;
• clamp actuating means associated with said machine and operative to actuate said clamp means in response to initial movement of said carriage means;
• said cutting head including at least one cutting element disposed therein, said cutting element being movable in a radial direction;
• and
• actuating means for moving said cutting element radially inwardly into engagement with said workpiece so as to sever said predetermined length of stock therefrom, said cutting element being urged radially outwardly in response to centrifugal force resulting from rotation of said head.