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A wire-cut EDM machine using the CNC drawing plotter and optical line follower techniques was produced in 1974. Dulebohn later used the same plotter CNC program to directly control the EDM machine, and the first CNC EDM machine was produced in 1976. [10] Commercial wire EDM capability and use has advanced substantially during recent decades. [11]
Electrical discharge machining (or EDM) is one of the most accurate manufacturing processes available for creating complex or simple shapes and geometries within parts and assemblies. A machining method typically used for hard metals, EDM makes it possible to work with metals for which traditional machining techniques are ineffective.
Most total stations use purpose-built glass prism (surveying) reflectors for the EDM signal. A typical total station can measure distances up to 1,500 meters (4,900 ft) with an accuracy of about 1.5 millimeters (0.059 in) ± 2 parts per million.
Originally developed at Itek on the PDP-1 as EDM (Electronic Drafting Machine), the efforts were purchased by Control Data Corporation and ported to their machines, along with a new graphics terminal to support it. Systems cost almost $500,000 and supported only a few users at a time, so in spite of a number of advantages it was not cost ...
The Clarks of Cooperstown: Their Singer Sewing Machine Fortune, Their Great and Influential Art Collections, Their Forty-year Feud (Alfred A. Knopf, 2007). Wickramasinghe, Nira. "Following the Singer Sewing Machine: Fashioning a Market in a British Crown Colony," in Metallic Modern: Everyday Machines in Colonial Sri Lanka. (Berghahn Books, 2014 ...
The EDM4S or EDM4S SkyWiper (Electronic Drone Mitigation 4 - System), is a portable electronic warfare anti-drone device produced and developed by the Lithuanian company NT Service [1] It is designed to disrupt small and medium sized UAVs by jamming their communication and satellite navigation systems with an electromagnetic pulse.
The CoAX 2D/2R was originally known as the FLIP 2 (Fly In Perfection) and is a derivative of the FLIP 1, a conventional helicopter with a main and tail rotor.[1]The CoAX 2D/2R was designed to comply with the European Class 6 microlight helicopter rules, including the category's maximum takeoff weight of 450 kg (992 lb).
Prostitution is not as widespread in Sri Lanka as in some neighbouring countries. [4] It is estimated that there are 40,000 prostitutes (known as "ගණිකාව" (Ganikawa)) [5] in the country, [6] and nearly half of them operate in Colombo. [7] Child Sex tourism [4] [8] and human trafficking [9] are problems in Sri Lanka.