Workshop benefits for milling include direct clamping of the component onto a base unit. Holes as sockets for the clamping studs are specified at the design stage. Components can be changed quickly and accurately across all machines for second ops and finishing.
In the case of turning operations the productivity increases are achieved with pre-balanced base units. Maximum safety at high forces comes from the additional retaining elements. EDM workholding functions reliably even under water or in dielectric. The base units are equipped with special drain holes so that the water can escape when the pots are opened.
For the clamping of challenging workpieces, SFT Spannsysteme GmbH, located in southern Bavaria is synonymous for smart and innovative high-precision clamping technology. The company offers a wide range of intelligent and highly innovative multi-purpose clamping solutions for machining operations, including the 5-Axis Multiple Clamping device, as well as the Zentro and Smart vice ranges.
The new SFT two-in-one 5-axis or multiple clamping device has several innovative features. A highly flexible, modular jaw system with positive-locking jaw connection at 40 kN. A 4-tonne clamping force can be achieved with just 85 Nm of torque.
The SFT Zentro centric vice is said to be ideal for high-precision manufacturing with internal and external clamping capability. Repeatable accuracy is just 5 micron from the very high rigidity, modular jaw system design that offers 30 different jaw designs as standard. An enclosed spindle removes concerns of swarf ingress.
Convertible from centrical to double-centrical operation, or for clamping against fixed jaw and/or double-clamping against fixed jaw, the SFT Smart vice is ideal for clamping small parts with outstanding versatility. Offering up to 15 kN clamping force with jaw widths of 22, 32 and 42 mm.
Manufacturing high quality face drivers for over 50 years, only one thing has never changed: the FRB patented balancing and holding system. Being completely mechanical and technologically advanced it still ensures absolute reliability, constant repeatability of the results and unparalleled holding capacity.
Over the same time period, the FRB live centres have been considered one of the best options for all mechanical processes using machine tools. Starting with the timeless FRB patented 65, 80 and 85 live centre series with axial load distribution, the company’s ongoing research and development has produced the latest 2000, 2006 and 2008 series. Today, a wide variety of revolving centres equipped with Morse tapers ranging in size are available, with standard or special features to fit any requirement.
Alongside its automation systems for machine tools, available from workholding, productivity improvement and manufacturing efficiency specialist Leader Chuck International, ZERO CLAMP also offers a new, matching clamping device for handling component blanks and raw billet material.
The pneumatic centring clamping fixture 160 offers powerful, infinitely variable clamping with forces of up to 45 kN at a maximum of 9 bar of compressed air. The compressed air supply is connected to the underside of the clamp. The centring clamping fixture is controlled using the four-channel clamping pots of the company’s advanced zero-point clamping system. Alternatively, the air ports on the side can also be used for this task.
What makes the centring clamping fixture unique is the system’s low pretension of 60 kg, which ‘lightly’ holds loaded material preventing the loss of clamped components when working with shuttle tables, for example, moving in and out of the machining envelope.
In addition to this, the generous clamping jaw stroke of 8.5 mm can be infinitely ‘fine-tuned’ with adjustment slots in the top of each jaw allowing a range of +/- 5 mm each side via the eight Allen head bolts that securely fix the top jaws to the vice. This increases the service life of the jaws as they can be accurately adjusted to compensate for any wear as well as for any deviation in the size of the raw material, such as castings being undersized.
The extensive range of jaw attachments, including grip jaws, carbide-coated jaws, profiled jaws or prism jaws to suit the workpiece, allows the centring clamping fixture to achieve clamping widths of 10 to 130 mm, making it suitable for a huge variety of applications.
Managing Director of Leader Chuck, Mark Jones, says: “For many engineering workshops the highly effective solutions available from ZERO CLAMP make it a one-stop shop for everything – from zero-point clamping systems and modular clamping rail systems to perhaps the most flexible, modular automation on the market. Everything a manufacturing business needs, from a single source.”