{"id":573,"date":"2013-10-16T09:31:23","date_gmt":"2013-10-16T07:31:23","guid":{"rendered":"http:\/\/www.floriske.nl\/?p=573"},"modified":"2015-08-26T19:45:49","modified_gmt":"2015-08-26T17:45:49","slug":"speed-up-thanks-to-the-stepper-motor-specsheet","status":"publish","type":"post","link":"https:\/\/www.floriske.nl\/wordpress\/2013\/10\/speed-up-thanks-to-the-stepper-motor-specsheet\/","title":{"rendered":"Speed up thanks to the stepper motor specsheet"},"content":{"rendered":"

The past week I’ve been busy testing the maximum acceleration of the machine.<\/p>\n

I already did this in the beginning but wasn’t really happy with the result. Last week (after months of mailing back and forth to China) I finally received the full spec sheet of the stepper motors. Turned out to be a good thing to keep requesting it until I finally received it. The motors turned out to have a max peak current of 4A (approx. 2,85A RMS). The machines stepper drives where however set to 3,41A peak.<\/p>\n

After rasing the peak current to 3,97A I had to retest. At first with a simple endurance test with a lot of abrubt and fast movements to “torture” the machine a bit. With this test I got a max. acceleration of 1750mm\/s2 instead of the previous maximum of 75mm\/s2!<\/p>\n

A quick example: When the machines max. speed is set to 50mm\/s or 3m\/min like on my machine and max. acceleration is 100mm\/s2 it takes the machine half a second to reach full speed (max speed\/max acc.).<\/p>\n

So in my case this was 50\/75=0,67s before raising the peak current and 50\/1750=0,029s after!<\/p>\n

After the test to find the maximum I started testing irl on a few projects that I had planned. This showed that finding a maximum is one thing, but it being usable is another \ud83d\ude09<\/p>\n

A short movie:<\/p>\n

http:\/\/www.youtube.com\/watch?v=GPjYvDqBtls<\/a><\/p>\n

Since MDF is quite cheap this was an ideal project for testing some settings.<\/p>\n

I routed the pockets on 3m\/min and 1240mm\/s3, that went crazy fast \ud83d\ude00 but resulted in quite some vibrations in the machine.<\/p>\n

After this I roughed the base shape at 2m\/min and 750mm\/s2 and that went a lot better, but stil some slight vibrations on the complex parts.<\/p>\n

The finishing pass (seen in the movie) was done at 2m\/min and 250mm\/s2 and all vibrations where gone, but as a result the machine was a bit slow on the complex parts.<\/p>\n

So I’ll need to find a “base” setting somewhere in between.<\/p>\n

Simple G-code (straight lines, squares and circles) can be done at a higher setting, more complex pieces will need a little lower settings.<\/p>\n

Just to show you the end result:<\/p>\n

<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

The past week I’ve been busy testing the maximum acceleration of the machine. I already did this in the beginning but wasn’t really happy with the result. Last week (after months of mailing back and forth to China) I finally received the full spec sheet of the stepper motors. Turned … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":574,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31],"tags":[],"class_list":["post-573","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cnc-router"],"_links":{"self":[{"href":"https:\/\/www.floriske.nl\/wordpress\/wp-json\/wp\/v2\/posts\/573","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.floriske.nl\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.floriske.nl\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.floriske.nl\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.floriske.nl\/wordpress\/wp-json\/wp\/v2\/comments?post=573"}],"version-history":[{"count":2,"href":"https:\/\/www.floriske.nl\/wordpress\/wp-json\/wp\/v2\/posts\/573\/revisions"}],"predecessor-version":[{"id":611,"href":"https:\/\/www.floriske.nl\/wordpress\/wp-json\/wp\/v2\/posts\/573\/revisions\/611"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.floriske.nl\/wordpress\/wp-json\/wp\/v2\/media\/574"}],"wp:attachment":[{"href":"https:\/\/www.floriske.nl\/wordpress\/wp-json\/wp\/v2\/media?parent=573"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.floriske.nl\/wordpress\/wp-json\/wp\/v2\/categories?post=573"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.floriske.nl\/wordpress\/wp-json\/wp\/v2\/tags?post=573"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}