member of Vergnano - Vebro Group English Home Products Company Contact Download Intranet Vergnano - Sincro Tapping Attachments technical information Presentation Assembly Instructions Overall Length Order Example Tightening torque table Vergnano Sincro Tapping Attachments Vergnano Sincro synchronous tapping attachments are specifically designed to enhance the performance of the Vergnano S-Series taps for synchronous tapping processes. Synchronous Tapping Attachments In modern CNC machine tools with synchronous spindles, the rotational and axial movements of the spindle are coordinated by the numeric control of the machine. On these modern machine tools standard compensated tapping attachments are not recommended since the large compensation in extension can negatively influence the performance of the tool. Vergnano Sincro synchronous tapping attachments are specifically designed for synchronous tapping: micro-compensation reduces the axial and radial forces generated during the tapping process and enhances tool life. Since machine, tapping attachment and tool are synchronised it is possible to reach high machining speeds. This advantage, together with increased tool life, leads to improved productivity. Compensation difference in conventional and synchronous tapping Requirements for Synchronous Tapping CNC machine with synchronised rotational and axial movements of the spindle. Spindle with sufficient rotational speed in order to reach the requested cutting speeds also with small diameter taps. Synchronous tapping attachment with micro-compensation. In order to work at the requested cutting speed during the entire machining process, the spindle must be able to accelerate to the full final speed before the tapping process begins. Technical Features The new Vergnano synchronous tapping attachments have an innovative quick-change adaptor system and are characterised by a differential compensation in traction and compression. Quick-Change System Vergnano offers a new system consisting in tapping attachment and quick-change adaptor which allows worn tools to be substituted without changing the entire tapping attachment thereby saving precious machining time. It is recommended to have a second quick-change adaptor (in addition to that delivered with the tapping attachment) sold separately to exploit this advantage. Also available are extended quick-change adaptors which permit extension of the tapping attachment in order to reach threads in difficult positions. This versatile and cost-saving system covers a wide range of applications with just one tapping attachment. The extended adapter is sold assembled and consists of two parts (adaptor and terminal adaptor). Further extensions are available on request. Micro-Compensation During tap reversal high axial forces are generated on the tap which cause mechanical stresses and micro-wear. This in turn leads to reduced tool life and tool precision. For this reason Vergnano synchronous tapping attachments are designed with differential micro-compensation in traction and compression which compensates the stresses on the tap. Compensation in traction (1 mm) is obtained by steel springs which guarantee greater reliability while compensation in compression (0,2 mm) is obtained by elastomer rings. Quick-Change Tap adaptor with Setting Screws Setting screws on the quick-change adaptors allow the use of standard ER collets without square drives further limiting purchasing costs. Through Coolant Capability All Vergnano synchronous tapping attachments are designed for use with internal lubrication up to 50 bars. For higher values a special pressure-tight nut screw is available on request. The special attachment design forces the through coolant to enter the tap adaptor from the sides without interfering with the compensation length. Advantages Reduced machining cycle times, due to higher cutting speeds. High tool life. High quality threads. Cost reduction due to versatile system with one tapping attachment and multiple Quick-Change adaptors. Comparative test with tap S17 M12x1,5 TiN Workpiece: Wheel hub Material: 38MnVS6+P (M.G. P.5) Hole: Through Thread depth [mm] 14 Lubrication: Minimal lubrication Vc [m/min] 25 Machine: Stama MC10014 Tapping direction: Vertical Tapping attachment: Rigid standard vs Vergnano Sincro Terms & Conditions - Sitemap ©2015. Fratelli Vergnano S.r.l. P.I. 00474150018 Loading...