Threading Technology – Clamping Technology 520

633 Tap Holders Soft- synchro Speed- synchro KSN MQL SFM HF EM Accessories Tech. Info Product Finder 7.1 Description of the symbols for performance characteristics C T Length compensation on compression and tension Length compensation on compression This type of length compensation compensates differences between spindle feed and the pitch of the thread to be produced. If a quick-change adapter with overload clutch is used, the length compensation on compression accommodates spindle feed as soon as the overload clutch responds. Initial position Activated length compensation on compression at • Plus programming of the control • Overload on the quick-change adapter with overload clutch Length compensation on tension This type of length compensation compensates differences between spindle feed and the pitch of the thread to be produced, as well as a spindle overrun at the point of reversal of the thread production cycle. With the tapping attachments, the length compensation on tension assumes the function of switching the sense of rotation from right-hand to left-hand rotation. Initial position Activated length compensation on tension at • Minus programming of the control • Manual retraction C T Soft Minimal length compensation An integrated minimal length compensation on compression and tension compensates minimal pitch differences between synchronous spindle and tool which would lead to excessive friction forces on the thread flanks. A possible increase of axial force during the thread production cycle is reduced to a minimum. The resulting advantages are: • No miscut threads • Optimized tool life • Suitable for internal coolant supply For more detailed information, see 7.4 Rigid tapping . F Pressure-point mechanism The patented pressure-point mechanism guarantees a safe start of the thread cutting process. The length compensation movement is released by the pressure-point mechanism only when the effective axial force exceeds the normal, permissible start-of-cut force. This helps to achieve reproducible, uniform thread depths. Pressure-point mechanism ZA Front release T Tension Compression C