{"id":331,"date":"2009-07-21T22:43:20","date_gmt":"2009-07-22T05:43:20","guid":{"rendered":"http:\/\/implant-mechanix.com\/blog\/?p=331"},"modified":"2015-10-19T00:17:33","modified_gmt":"2015-10-19T00:17:33","slug":"wire-and-sinker-edm-on-the-same-job","status":"publish","type":"post","link":"http:\/\/www.implant-mechanix.com\/blog\/2009\/07\/21\/wire-and-sinker-edm-on-the-same-job\/","title":{"rendered":"Wire and Sinker EDM on the same job"},"content":{"rendered":"

This is a stainless steel tube that forms part of a needle biopsy instrument.\u00a0 The tubing is very thin…the wall is 0.004″ thick.\u00a0\u00a0\u00a0The slots need square ends and must be precisely oriented around the tube.\u00a0 The slots must be bur-free since other parts slide in the tube.\u00a0 Despite its expense, EDM is the obvious processing choice for a part like this.<\/p>\n

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The slots are 0.015″ wide.\u00a0 There are six of them around the periphery of\u00a0 the tube which is just over 1.0 mm in diameter.\u00a0 The slots were cut using the sinker EDM by vectoring a six pronged electrode around the tube which was oriented standing up in the worktank.\u00a0 The tube is so flimsy that the first attempts resulted in\u00a0deformation of the tube when it was clamped into the vee block even though the clamping was performed very gingerly.<\/p>\n<\/div>\n<\/div>\n

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Here is the electrode.\u00a0 It is made from copper tungsten which is the material of choice for electrodes that are fragile and must stand up to repeated use.\u00a0 This electrode material is quite difficult to machine on conventional equipment, but wire EDM cuts it\u00a0very well.\u00a0 The two big flats cut into the body are reference surfaces for aligning the electrode when it’s used.\u00a0 This electrode has burned 6 tubes and still has a good bit of life in it.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

This is a stainless steel tube that forms part of a needle biopsy instrument.\u00a0 The tubing is very thin…the wall is 0.004″ thick.\u00a0\u00a0\u00a0The slots need square ends and must be precisely oriented around the tube.\u00a0 The slots must be bur-free since other parts slide in the tube.\u00a0 Despite its expense, EDM is the obvious processing […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,11,20,23],"tags":[],"class_list":["post-331","post","type-post","status-publish","format-standard","hentry","category-edm","category-miniature-machining","category-sinker-edm","category-wire-edm"],"_links":{"self":[{"href":"http:\/\/www.implant-mechanix.com\/blog\/wp-json\/wp\/v2\/posts\/331","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.implant-mechanix.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.implant-mechanix.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.implant-mechanix.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.implant-mechanix.com\/blog\/wp-json\/wp\/v2\/comments?post=331"}],"version-history":[{"count":1,"href":"http:\/\/www.implant-mechanix.com\/blog\/wp-json\/wp\/v2\/posts\/331\/revisions"}],"predecessor-version":[{"id":814,"href":"http:\/\/www.implant-mechanix.com\/blog\/wp-json\/wp\/v2\/posts\/331\/revisions\/814"}],"wp:attachment":[{"href":"http:\/\/www.implant-mechanix.com\/blog\/wp-json\/wp\/v2\/media?parent=331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.implant-mechanix.com\/blog\/wp-json\/wp\/v2\/categories?post=331"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.implant-mechanix.com\/blog\/wp-json\/wp\/v2\/tags?post=331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}