{"id":6355,"date":"2021-09-08T11:42:52","date_gmt":"2021-09-08T03:42:52","guid":{"rendered":"http:\/\/www.epochnc.com\/?p=6355"},"modified":"2023-04-23T16:27:56","modified_gmt":"2023-04-23T08:27:56","slug":"english-etk2708%e6%95%b0%e6%8e%a7%e9%92%a2%e6%b4%bb%e5%a1%9e%e5%bc%82%e5%bd%a2%e9%94%80%e5%ad%94%e9%95%97%e5%ba%8a","status":"publish","type":"post","link":"http:\/\/www.epochnc.com\/archives\/6355?lang=en","title":{"rendered":"ETK2708 NC Boring Machine for Non-circular Steel Piston Pinhole"},"content":{"rendered":"\"\"<\/p>\n

Function introduction:<\/strong><\/p>\n

This machine tool is mainly used for finishing and semi-finishing non-circular pinholes for forged steel pistons(tapered holes, curved holes,\u00a0hyperbolic\u00a0holes). Equipped with\u00a0double spindles arranged\u00a0left and right\u00a0, the one is for fine boring (the left spindle), the other is for semi-fine boring (the right spindle).<\/p>\n

The fine boring spindle is the static-dynamic pressure spindle and equipped with precision micro-displacement servo boring device, which completes non-circular piston pinholes (tapered holes, curved holes) surface machining under the condition of high-speed rotation of the spindle. The size of the pinhole can be fine-tuned by program, and the non-circular pinhole size and length can be adjusted by program.<\/p>\n

SIEMENS 828D system\u00a0is adopted, for which the programming is flexible and convenient, and the reliability is high.<\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

M<\/strong>ain technical parameter<\/strong>s<\/strong>:<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n

S\/N<\/strong><\/p>\n<\/td>\n

\n

Item<\/strong><\/p>\n<\/td>\n

\n

Unit<\/strong><\/p>\n<\/td>\n

\n

ETK2708A<\/strong><\/p>\n<\/td>\n<\/tr>\n

\n

1<\/p>\n<\/td>\n

\n

Outer diameter range of machined piston<\/p>\n<\/td>\n

\n

mm<\/p>\n<\/td>\n

\n

\u03a680\u00a0~ \u03a6200<\/p>\n<\/td>\n<\/tr>\n

\n

2<\/p>\n<\/td>\n

\n

Pinhole diameter\u00a0range of the machined piston<\/p>\n<\/td>\n

\n

mm<\/p>\n<\/td>\n

\n

\u03a630\u00a0~\u03a680<\/p>\n<\/td>\n<\/tr>\n

\n

3<\/p>\n<\/td>\n

\n

Fine boring spindle<\/p>\n<\/td>\n

\n

\n<\/td>\n

\n

Static-dynamic Pressure Spindle<\/p>\n<\/td>\n<\/tr>\n

\n

4<\/p>\n<\/td>\n

\n

Semi-fine boring spindle<\/p>\n<\/td>\n

\n

\n<\/td>\n

\n

Bearing Spindle: A2-6<\/p>\n<\/td>\n<\/tr>\n

\n

5<\/p>\n<\/td>\n

\n

Fine boring Spindle Accuracy<\/p>\n<\/td>\n

\n

mm<\/p>\n<\/td>\n

\n

0.002<\/p>\n<\/td>\n<\/tr>\n

\n

6<\/p>\n<\/td>\n

\n

Semi-fine boring\u00a0Spindle Accuracy<\/p>\n<\/td>\n

\n

mm<\/p>\n<\/td>\n

\n

0.003<\/p>\n<\/td>\n<\/tr>\n

\n

7<\/p>\n<\/td>\n

\n

Fine boring Spindle Speed<\/p>\n

(stepless speed regulation)<\/p>\n<\/td>\n

\n

rpm<\/p>\n<\/td>\n

\n

50~1500<\/p>\n<\/td>\n<\/tr>\n

\n

8<\/p>\n<\/td>\n

\n

Semi-fine boring\u00a0Spindle Speed<\/p>\n

(stepless speed regulation)<\/p>\n<\/td>\n

\n

rpm<\/p>\n<\/td>\n

\n

50~1500<\/p>\n<\/td>\n<\/tr>\n

\n

9<\/p>\n<\/td>\n

\n

Maximum effective offset of the fine boring edge<\/p>\n<\/td>\n

\n

mm<\/p>\n<\/td>\n

\n

0.06<\/p>\n<\/td>\n<\/tr>\n

\n

10<\/p>\n<\/td>\n

\n

Processing roughness<\/p>\n<\/td>\n

\n

\u00b5m<\/p>\n<\/td>\n

\n

Ra0.63<\/p>\n<\/td>\n<\/tr>\n

\n

11<\/p>\n<\/td>\n

\n

Fine-boring straight hole roundness<\/p>\n<\/td>\n

\n

mm<\/p>\n<\/td>\n

\n

0.002<\/p>\n<\/td>\n<\/tr>\n

\n

12<\/p>\n<\/td>\n

\n

Fine-boring monoliteral pinhole straight-line cylindricity<\/p>\n<\/td>\n

\n

mm<\/p>\n<\/td>\n

\n

0.004<\/p>\n<\/td>\n<\/tr>\n

\n

13<\/p>\n<\/td>\n

\n

Machine\u00a0(L\u00d7W\u00d7H)<\/p>\n<\/td>\n

\n

mm<\/p>\n<\/td>\n

\n

2900\u00d71700\u00d72450<\/p>\n<\/td>\n<\/tr>\n

\n

14<\/p>\n<\/td>\n

\n

Net weight of the machine<\/p>\n<\/td>\n

\n

kg<\/p>\n<\/td>\n

\n

5500<\/p>\n<\/td>\n<\/tr>\n

\n

15<\/p>\n<\/td>\n

\n

Overall power\u00a0of the machine<\/p>\n<\/td>\n

\n

kW<\/p>\n<\/td>\n

\n

25<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"excerpt":{"rendered":"

Function introduction: This machine tool is mainly used for finishing and semi-finishing non-circular pinholes for forged steel pistons(tapered holes, curved holes,\u00a0hyperbolic\u00a0holes). Equipped with\u00a0double spindles arranged\u00a0left and right\u00a0, the one is for fine boring (the left spindle), the other is for semi-fine boring (the right spindle). The fine boring spindle is the static-dynamic pressure spindle and […]<\/p>\n","protected":false},"author":1,"featured_media":7114,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[33],"tags":[],"_links":{"self":[{"href":"http:\/\/www.epochnc.com\/wp-json\/wp\/v2\/posts\/6355"}],"collection":[{"href":"http:\/\/www.epochnc.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.epochnc.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.epochnc.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.epochnc.com\/wp-json\/wp\/v2\/comments?post=6355"}],"version-history":[{"count":12,"href":"http:\/\/www.epochnc.com\/wp-json\/wp\/v2\/posts\/6355\/revisions"}],"predecessor-version":[{"id":7456,"href":"http:\/\/www.epochnc.com\/wp-json\/wp\/v2\/posts\/6355\/revisions\/7456"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.epochnc.com\/wp-json\/wp\/v2\/media\/7114"}],"wp:attachment":[{"href":"http:\/\/www.epochnc.com\/wp-json\/wp\/v2\/media?parent=6355"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.epochnc.com\/wp-json\/wp\/v2\/categories?post=6355"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.epochnc.com\/wp-json\/wp\/v2\/tags?post=6355"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}