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  • http://www.ctemag.com/pdf/2001/0107-solid.pdf
    significant development in maintaining a complete inter- face between the machine tool’s spindle and the tool - holder is the dual - contact , 7/24 taper system (7" of taper per 24" of length).
  • BIG Kaiser Introduces New ER Collet Chuck, First Industry Standard Collet Chuck With BIG-PLUS Interface
    A standard collet system can now be used in conjunction with a BIG-PLUS tool holder to achieve the benefits that the dual contact spindle system was intended to provide.
  • Cutting Tool Technology
    One of the most significant developments in maintain- ing a complete mechanical interface between the tool - holder and the machine’s spindle was the dual - contact 7/24 taper system .
  • http://www.ctemag.com/pdf/2006/0606-Toolholding.pdf
    The latter consists of spindles and holders that en-sure simultaneous, dual contact at all times between the spindle face and toolholder flange face, as well as the spindle taper and the long-taper shank of the tool .
  • BIG DAISHOWA SEIKI CO LTD. Recommends the Use of Only Genuine BIG-PLUS® Tooling in the Patented BIG-PLUS® Spindle System
    The answer is found in the simultaneous dual contact system, awarded a patent by the U.S. Patent and Trademark Office, which … … only between the BIG-PLUS® spindle and the taper of the BIG-PLUS® tool holder , but also between the …
  • Machine tools, machine types, and scope of application
    Data transmission, 505 recording mediums , profile grinding 25 diode laser ingots, 291 direct drive, 58, 88 … … pistons, 88, 90 diffusion process, 362 DNC, 450 DNC interface, 20 double poor grippers, 174, 191 … … baking feeds, 508 pressure contact time, 53, 63 pressure … … 34 Endrücknahgme, 50 337 EMSIAN, 65 adjusting angles, 335 individual machine, 17 individual tool processing, 422 ejector …
  • Machining of Hard Materials
    Another holder type is the BIG-PLUS® system, with simultaneous dual contact between the machine spindle nose and toolholder flange face. … most currently available standards for JIS-BT, DIN69871 and the CAT-V flange tooling and actually is …
  • Characteristics of elliptical vibration cutting in micro-V grooving with variations in the elliptical cutting locus and excitation frequency
    Attached at the one end of the piezoelectric actuator is a ball tip made of stainless steel which allows a point contact between the piezoelectric actuator and the tool holder , facilitating the sliding of the cutting tool when a lateral force develops … Harmonic excitation voltages which are generated by dual channel function generator (WF1946B, NF corp.) and amplified by …
  • Fixing the Hole Problem
    ideal combination of tool -and-tap holder to attain ideal pro- jection lengths for any machine. Dual contact body models are standard, which in- cludes BIG-PLUS CAT and BT, HSK and BIG Coromant Capto.
  • New VMC Is Compact, But Powerful
    The Big Plus dual - contact tooling system creates full contact along the spindle taper and the toolholder flange, ensuring maximum rigidity for more precise cutting and longer tool life. Both the Big Plus and standard tool holders can be mounted at any automatic tool-changing station …