Общий каталог ZCC-CT 2019 - страница 462

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TurningMillingDrillingTechnicalInformationIndex Technical information – turning Technical information Choice of angle and shim A Choice of angle The flank clearance angles of the thread profile depend on the helical angle of the thread. The helical angle of the thread must coincide with the insert's angle of inclination angle as far as possible to get the ideal profile, to avoid longer unfavourable wear on one of the flanks and thus to ensure tool life. λ = arctan pd2 × π B p Pitch d2 Flank diameter λ Pitch angle Helix angle (p) Pitch angle (λ) Choice of shim Pitch/mm Threading number/inch Pitch range Dimension Pitch angle Shim 8 3 C 0 MT16-00M 1 MT16-01M 7 0,5–0,3 16 2 MT16-02M 4 3 MT16-03M 6 0 MT22-00M 5 5 1 MT22-01M 3,5–6,0 22 2 MT22-02M 4 6 3 MT22-03M 7 3 89 2 1114 The shim λ = 1° is delivered with the tool holder. 1 182432 D Machining 50 100 150 200 mm diameter 2 4 6 8 Infeed way of threading The number of passes and widths of cut are the key points of threading operation. Please choose the cutting parameters with the recommended form according to experience data. In case of breakages or too much wear please have a look at page A447 (trouble shooting). E Radial width of cut Modified flank width of cut Alternating width of cut Radial width of cut requires low cutting depth, Infeed at an angle of 3–5° to the flank of the Alternating width of cut is mainly used for large sharp cutting edge and tough grade. It is teeth. It is easy for chips flow. Suitable for long pitches and long chip materials. To get equal recommended when the pitch is smaller than chip material and internal threading. insert wear on both edges. 2 mm, not ideal for material with long chips. A 457