Общий каталог OSG 2018 - 2019 - страница 678

ISO-5H Internal Thred ISO-6H Internal Thred Thread Mill How-To Guide Radius Offset (RPRG) RPRG is the reference value of tool radius offset. NOTES: Conventionally, the tool radius was entered during setup as a parameter of the NC system, whichwas corrected by checking the thread with a gauge. However, it has become possible to reduce thechecking and correction simply by entering the RPRG value indicated on the tool shank.1. RPRG are reference values.Determine optimal values aftertrial cutting as values depend on machining environment. +0.150 Example 2.RPRG values are optimally +0.118 • Tool diameter:φ7.5; Pitch: 1; Minimum cutting bore diameter: 10 established to achieve ISO:5H(EDP: 8304721)(formerly Grade 1) internal • Internal thread size: M10 × 1 thread limits for metric threads • Tolerance for pitch diameter: 0 to +0.118 (ISO-5H), 0 to +0.150 (ISO-6H) and ANSI:3B internal threadlimits for unified threads. RPRG values established for taper Entered value of RPRG: 3.681 pipes (R/Rc) are effective when using the thread milling NC code generator software ThreadPro available on our website. 3. For diameters of thread mills, Radius RPRG values are calculated Pitch Dia. 0 RPRG=3.681 based on the minimum cutting bore diameter (the minimum cutting internal thread size of the tool diameter). To cut other diameters, it is necessary to use a smaller value than RPRG. Entered value of Radius: 3.75 ThreadPro (Thread Milling NC Code Generator Software) www.osgtool.com/threadpro • Available in 12 different languages • Supports 8 NC programming languages • Incorporates RPRG* value to further simplify process * RPRG = reference value of tool radius offset Powered by 678 Threading Technical WWW.OSGTOOL.COM