Out with the old, in with the new

The Chick One-Lok CNC vice system is the latest evolution of workholding technology to be added to 1st Machine Tool Accessories' (1st MTA's) portfolio of high productivity machining equipment.

Developed from scratch to meet the speed, precision and flexibility demanded by modern CNC machining operations, One-Lok eliminates the shortcomings of standard knee mill vices based on 1950s technology.

With a maximum grip of up to 432mm, One-Lok incorporates Chick's new ‘Boltfast' interchangeable jaw system, which enables soft or hard jaws to be replaced with a single turn of a locking screw, to provide locational repeatability of 0.02mm. Machining accuracy is further enhanced by the unit's ‘squeeze' clamping configuration, which applies an equal and opposite internal force to the fixed jaw as the moving jaw closes – providing virtually deflection free component clamping with a maximum retaining force of 10,000lbf. In operation, the vice also imparts a pull down action to the workpiece for increased security and precision.

Unlike traditional machining vices, which require up to 70 complete revolutions of their operating handle to be fully opened or closed, One-Lok features a ‘QwikSlide' mechanism that allows the moveable jaw to be easily unlocked and slid forwards or backwards to achieve rapid set-ups. A further feature of the unit's compact, modular design is its hardened, precision ground cast iron base, which not only provides a solid working surface, but also eliminates swarf traps – reducing the need for fixture cleaning between machining cycles.

Available as a standalone workholding system, complete with a set of hard jaws, toe clamps, operating handle and jaw change T wrench, the One-Lok is complemented by an extensive range of machining accessories, including stepped hard jaws, outboard mounted hard jaws, soft jaws, an adjustable work stop, foundation stops and locating keys. In addition, purpose designed spacers enable existing knee mill vice jaws to be quickly installed to the One-Lok base unit without modification.

1st MTA
www.1mta.com