Browse by Editorial Category
Browse by Edition Date

May 2017

Skip Navigation Links.
Expand Applying TechnologyApplying Technology
Collapse Automotive-Motorsports Mfg TechAutomotive-Motorsports Mfg Tech
High Production CNC Crankshaft Grinding Machines
VMC Offers Accuracy, More Productivity
BAAM to be Centerpiece of Local Motors Automotive Microfactories
Divergent 3D Enters Partnership with SLM Solutions Group
6/8 Inch Class Compact Turning Center
Mill-Turn Center for Performance Shops
2,200 Degree F Inert Atmosphere Pit Furnace
Machining Center for 5-Axis Profiling and Head Porting
5-Axis Machining Center Offers High Capacity and Performance
Hyundai Motor Group Investing in the USA
Racing Manufacturer Opens Waterjet Job Shop, Extends Customer Base
KBDM Face Milling Platform for Automotive Aluminum
Ultra Compact HMC Reduces Floor Space by 20%
HMC Built for Large, Heavy Part Production
Multi-Bladed PCD Fine Boring Tools for Valve Housings
Flexible Solution for High-Precision Measurements
Compact, High-Speed Horizontal and Vertical Machines for High-Volume Production
Innovative, Compact Horizontal Machining Center
Endless Rotating Axis for Automotive Industry
Compact and Flexible Horizontal CNC Lathe
GKN Driveline Seeks Traceabililty
Metal 3-D Printing Pushes the Boundaries in Moto2
Power-Operated Chucks Deliver Secure Holding for Gear Grinding
Partnership Brings AM to Formula 1
Cylinder Hone Updated with Siemens Control, Safety-Integrated Drives
Vertical Grinding Machine with Automatic Chuck Changer
Synchronous Control of Skiving Technology
Capture 3-D Point Clouds on the Car Body Production Line
Expand Cutting ToolsCutting Tools
Expand EASTEC ShowEASTEC Show
Expand General EditorialsGeneral Editorials
Expand Heat TreatingHeat Treating
Expand Literature-Web TutorialsLiterature-Web Tutorials
Expand Mold MakingMold Making
Expand People In The NewsPeople In The News

show all editions →

Click here to watch Tutorial Videos >

Multi-Bladed PCD Fine Boring Tools for Valve Housings



In automatic transmissions, the switching unit is the central component that controls the clutch and the transmission brake in order to change gears depending on the engine load and the vehicle speed. In the manufacturing of the switchgear housing, the valve bores play a central role. For a significant increase in productivity during machining, MAPAL has developed multi-bladed PCD tools with permanently brazed cutting edges.

The housings consist mainly of alloy die cast aluminum (AlSi9Cu3Mg). "The tolerances of cylinder form < 8 µm, roundness < 4 µm and surface finish with Rz < 3 µm have to continually and reliably be achieved during their production," said a company spokesperson. "These requirements are particularly put upon the mostly stepped valve bores. Their machining is divided into several sequences. In these situations, different tools are used for piloting, semi-finishing and finishing."

"Since not every valve bore requires the maximum manufacturable precision, alongside the finely adjustable boring tools, MAPAL also offers permanently brazed PCD fine boring tools that achieve a considerable reduction in process time, despite a tolerance range that is only minimally extended," continued the spokesperson. "In addition, the fixed multiple-bladed tools display their quality by eliminating the fine adjustment of the cutting edges, thereby minimizing adjustment efforts."

For intermediate machining, a four-edged PCD tool with brazed cutting edges has been developed that can be used as an alternative to a twin-edged standard tool as long as the length/diameter ratio and stock situation allow. "A shorter process time and the required positional accuracy are thereby achieved. This is the basis for finish machining," said the spokesperson.

The outcome of the finishing depends largely on the quality of the intermediate machining. "Previously, the high standards placed upon finishing work had been met by using a single-bladed finely adjustable PCD fine boring tool," said the spokesperson. "Again, a new reliable and economical machining strategy has been designed. Depending on the requirement, three- to six-edged fixed PCD fine boring tools are available for finishing work. These provide a significant improvement in cycle times with almost the same precision."

For more information contact:

MAPAL Inc.

4032 Dove Road

Port Huron, MI 48060

810-364-8020

info@us.mapal.com

www.mapal.com

< back

Email   email