Fine Boring Tools feature composite construction.
Press Release Summary:
TruLine Tool® series is constructed of composite carbon fibers epoxied to stainless steel cover or sleeve that can be final machined with necessary insert pockets, screw holes, and wear pads. Combined with polycrystalline diamond guide pads and length-to-diameter ratios suited for all types of machine spindles, products promote chatter-free machining up to 30,000 rpm. They can be manufactured as solid bars or designed with detachable heads, and tool shanks can be CAT, BT, or HSK.
Original Press Release:
Johnson Carbide Products, Inc. Introduces New Family of Composite Tooling for Boring Applications
Johnson Carbide Products has successfully participated in the development and patenting of the TruLine Tool® family of carbon fiber/epoxy composite boring tools that are producing significantly better bored holes in terms of accuracy, surface finish, tool life and productivity.
Called the TruLine Tool® family of composite fine boring tools, these unique cutting tools utilize a fabrication of composite carbon fibers that are epoxied to a stainless steel cover or sleeve that can be final machined with the necessary insert pockets, screw holes and wear pads. By using composite materials, the boring tools are lightweight but have very high strength with density, stiffness, coefficient of friction and damping characteristics that are significantly better than boring tools made from steel or carbide.
Initial applications have been proven in the automotive industry where the major OEM manufacturers are using the TruLine boring tools for boring the camshaft bores in cylinder heads. In some applications, the tools have doubled the number of parts that can be produced before inserts need to be changed, surface finish has been improved nearly eight times and workpiece accuracies in terms of tolerances and roundness have seen up to four times the improvement over conventional steel boring tools.
Combined with polycrystalline diamond (PCD) guide pads and long length-to-diameter ratios for all types of machine spindles, these composite tools offer users boring tools that have:
· 1/8th the weight of carbide body tools
· 8 times the dynamic stiffness of carbide
· Better surface finish
· Chatter-free machining up to 30,000 rpm
· 10 times the dampening of carbide
· Up to 3 times the tool life of comparable steel tools
· Reduced spindle and magazine loads
· Up to 40% increased speeds/feeds
· Large-diameter machining on BT40 and CAT40 spindles
· Improved workpiece tolerance and roundness
TruLine Tool composite boring tools can be manufactured as a solid bar or designed with detachable heads for additional flexibility. Tool shanks can be CAT, BT or HSK. Standard solid boring bars from 3/8 to 1-in diameter and from 6-in to 11-in long are available as well as a variety of boring bar kits that include a complete set of bars.
Because of the inherent lightweight characteristics of the tools, larger bores can be produced on machining centers where weight issues related to the automatic tool changer can be eliminated. Also, with the low coefficient of thermal expansion, the TruLine Tool composite tools eliminate the undesirable additional 6 to 8 micron runout that typically occurs on long boring bars (22-26-inches) when they are stored for extended lengths of time.
Other current applications include boring of the wrist pin and crank bores of connecting rods for automotive engines and large off-highway excavator engines and screw-type pump bodies.
Since 1953, Johnson Carbide Products, Inc., has been designing and developing superior quality, high-precision solid micro-grain carbide cutting tool products including; drills, end mills, reamers, saws, slitting saws, routers countersinks and burrs.
Send Inquiries To:
Richard Theriault
VP Technology & Development
Johnson Carbide Products, Inc.
1422 S. 25th Street
Saginaw, MI 48601
Tel: (989) 754-7496
Fax: (989) 754-7499
rt@asitooling.com
