821 Каталог GUHRING 2016 Режущий инструмент для обработки наружной и внутренней резьбы Стр.809

Каталог GUHRING 2016 Режущий инструмент для резьбы Стр. 809 0821 Lab2u

PRACTICAL APPLICATION OF THREAD MILLING CUTTERS Practical application of thread milling cutters 1.) Tool clamping: good concentricity is important, therefore clamping as short and rigid as possible 2.) Enter tool data in machine memory 1.) Tool length from the front face, take drill/thread milling cutters (DTMC) rom point. 2.) Measure tool radius with tool pre-setting equipment. General rule: measured radius - 0.022 x pitch provides the input value in machine memory. 3.) Input of CNC program in control (preferably integrated as sub-program at corresponding positions) a.) Call-up of a self-controlling cycle (procedures should be known) b.) Integration of data file from our threadmill-software (DIN or Haidenhain). 4.) Trial run over workpiece a) Tool length dimension in memory extending by an approximate value dependent on contact length (i.e. 30 mm) or offset zero point. b) Run program in single set, visual check of travel path. c) Allow program to run in automatic mode. Attention: With controls where it is not definitely clear what milling path is assigned it it must be clarified if the feed is positioned on the external path vf or at the centre path vm. As a rule we specify the milling centre point path vm. 5.) Application in workpiece Re-set the tool extension or the zero point. Then allow the program to run in the workpiece the feed regulation must be 100% selected. Should the thread not be true to gauge, the tool radius requires correction in the tool memory: Example: thread too tight: Radius correction - input thread too large: Radius correction + input GUHRING 809 Technical section