WORKHOLDING


difference between oil and gas and other machining ap- plications. Whereas a typical 40 × 20" [1016 × 508-mm] vertical machining center might accommodate a 18-mm T-nut with a ½" [12.7-mm] stud and a clamp strap 1¼ "


[31.8-mm] wide and 5" [127 mm] in length capable of a maximum clamping force of 2300 lb [10.2 kN], we frequent- ly sell 1⅛ " [28.6-mm] T-nuts with a 1" [25.4-mm] stud and a clamp strap 33/16" [85.7-mm] wide and 12" [305-mm] long capable of a maximum clamping force of 10,000 lb [44.5 kN].” Carr Lane has invested in the development of many modular fi xtur- ing and quick-change fi xturing suitable for larger parts, he added. At IMTS, the company showed its CL5 fi ve-axis fi xturing solutions, heavy-duty modular clamps, and tooling blocks with quick- change modular tooling plates.


Reducing Large-Part Vibration With larger workpieces, eliminat-


ing or reducing the vibration typi- cal in large, longer parts is an issue for oil & gas manufacturing, noted Gerard Vacio, applications specialist for workholding, BIG Kaiser Precision Tooling Inc. (Hoffman Estates, IL). A new system aimed at deep boring and extended-reach milling operations, the Smart Damper, can substantially reduce the vibration inherent in using longer tools, Vacio said.


Everybody is trying to achieve single-pass threading with pipe.


The Smart Damper incorporates a damping mechanism that functions as both counter and friction dampers. The patent-pending system’s counter weight maximizes the effect of the friction damper, absorbing vibration effectively and allowing higher machining accuracy. BIG Kaiser also has developed a new tombstone made out of mineral casting and coated with a vibration- reducing epoxy. “We take a conven- tional tombstone, add a steel insert


74 AdvancedManufacturing.org | February 2015


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