 |
|||||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||
 
|
|||||||||||||||||||||||||||||||||||||||||||||
Active Machining Systems (AMS)
AMS is the fastest, most rigid and accurate fast tool servo system on the market specifically designed to turn the non-round skirts of pistons. It is synchronized to the rotation of machine tool spindles. The solid-state position of the tool is controlled by the elongation of a solid bar of ETREMA Terfenol-D. By mounting the tool to activate along the X axis of a machine tool, oval parts can be turned. The dynamic mass of the system has purposefully been kept low in order to minimize the accelerations seen at the machine tooling plate. This combination of rigidity, speed, and mass makes the AMS system the ideal choice for manufacturers of large volumes of pistons. The AMS' unique combination of attributes makes it ideal for rapidly positioning a cutting insert for turning elliptical pistons. The basic AMS system is capable of machining ovals at speeds up to 6000 RPM.
Speed - The speed of motion can be extremely fast. Terfenol-D has been used to actuate devices at over 20,000 cycles per second. In comparison, machining pistons requires relatively slow operation at 200 cycles per second. What this means is that is that there is sufficient bandwidth to reject disturbances from interrupted cuts arising from voids in the castings and wrist pin axis 'windows' designed into the piston, thereby giving excellent surface finish at production spindle rates. Reliability - The mechanism that generates the change in shape of the material is 'cast in' to the alloy at the time of manufacture. What this means is that the material will never lose its ability to change shape. Other types of shape change materials can not make this claim. The popular piezoceramic materials are artificially poled after manufacture. Heat and operating cycles will cause these materials to degrade over time. Billions of operational cycles have proven that Terfenol-D does not have this same issue. Specifications:
Other potential areas of application include cam machining, butterfly valve disks, diamond-turning contact lenses and other glass lenses, and non-round boring (for example, wrist bin holes in pistons or connecting rod bearings). Several small engine piston manufacturers currently utilize AMS technology. Each customer has multiple AMS machines currently running production. The first production machine was installed in June, 2001. AMS Options Due to many customer requests, ETREMA has made available an AMS Service and Software Plan, as well as a Spare Parts list to insure that you have maximum redundancy and up time. AMS training classes are also available - call for scheduling and availability. Contact ETREMA Products for more information regarding AMS today. Call Etrema Products or email customer.service@etrema-usa.com for a price quotation today! Most quotations returned in under 24 hours! |
|||||||||||||||||||||||||||||||||||||||||||||
 |
|||||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||
 |
|||||||||||||||||||||||||||||||||||||||||||||
Rigidity - unlike voice-coil technology, the position of the tooling insert is
generated by the change in shape of 
