{"id":1866,"date":"2016-11-29T11:00:18","date_gmt":"2016-11-29T17:00:18","guid":{"rendered":"http:\/\/blog.misumiusa.com\/?p=1866"},"modified":"2021-11-02T16:58:58","modified_gmt":"2021-11-02T21:58:58","slug":"linear-bushings-more-application-examples","status":"publish","type":"post","link":"https:\/\/us.misumi-ec.com\/blog\/linear-bushings-more-application-examples\/","title":{"rendered":"Working With Linear Bushings Pt 5: More Application Examples"},"content":{"rendered":"

The applications using linear bushings<\/a> are infinite.\u00a0 Where there is any linear movement a bushing can be used.\u00a0 Diving into more applications using linear bushings we will examine ball screw<\/a> drives, air cylinder drives, and even a vertical guide.\u00a0 Looking at these applications may give us more inspiration for future designs and insight as to how linear bushings are applied.<\/p>\n

Stepping Motors and Ball Screw Drive<\/strong><\/p>\n

The first application we will examine utilizes ball screws and a stepper motor.\u00a0 Ball screws<\/a>\u00a0provide good transmission efficiency and utilization of motor efficiency.\u00a0 They directly convert motor’s rotary motion into linear motion and the ball screw pitch works as a deceleration mechanism.<\/p>\n

[Fig.4] below is a drive mechanism with ball bushings and a ball screw drive on the Y-axis, typically used where reduced cycle times and increased positioning accuracy are needed.\u00a0 The red arrows point to the location of the ball bushings, in this case, they are not easily seen but you can see the 2 guide shafts where the ball bushings would be incorporated.<\/p>\n

\"ball-screw\"<\/p>\n\n\n\n
Supplementary Explanation<\/strong><\/p>\n

a) Stepping Motor Characteristics<\/strong>
\n-Stepping motors generate high torques in low speed (starting\/decelerating) ranges, thus suitable for multiple position incremental moves over short distances.<\/p>\n

b) Required Motor Accuracy to Achieve Targeted Positioning Accuracy<\/strong>
\n-When a 10mm lead (10mm\/rev.) ball screw is selected for required accuracy of \u00b10.01mm, the following equation can be used to obtain the required motor accuracy (resolution).<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\"required-motor-accuracy\"<\/p>\n

\u00a0Air Cylinder Drive<\/strong><\/p>\n

[Fig.5] below is clamp mechanism driven by an air cylinder on a guide bearing.\u00a0 [Photo 2] also below is a magnetically coupled air cylinder mechanism. They both use\u00a0linear bushings<\/a>\u00a0highlighted by the red arrows. \u00a0These bushings allow for less friction in the cylinders movement and also provide rotation prevention.<\/p>\n

Since the air cylinders cannot be velocity controlled during acceleration and deceleration, shock absorbers are used to reduce the shocks when stopping ([Photo 2]).<\/p>\n

\"air-cylinder\"<\/p>\n

Vertical Guide Examples with Flanged Linear Bushings<\/strong><\/p>\n

Flanged linear bushings are used in a variety of vertical guide applications for its ease in mounting and compact size. \u00a0They can be mounted\u00a0securely on a vertical guide without special holding devices, allowing for a compact and simple mechanism. \u00a0Photo 3 shows that a vertical base plate is needed on the slide guide to stabilize the rail. \u00a0The linear bushings are highlighted by the red arrows.<\/p>\n

Photo 4 shows them used as elevation guides from the lower parts of transfer conveyors, highlighted by the red arrows. \u00a0Photo 6 shows a conveyor example with linear bushings on the shafts. \u00a0Figure 7 shows them in a locating mechanism, all highlighted by the red arrows.<\/p>\n

\"vertical-application\"<\/p>\n

\"application-example\"<\/p>\n

If you would like to see more application examples using linear bushings, check out inCAD Library<\/a>, the Misumi Application Library. \u00a0Search “Linear Bushings” and it will render many applications that use linear bushings! All applications are free to download and available in many 3D CAD platforms. \u00a0This concludes the series on Working with Linear Bushings!<\/p>\n

 <\/p>\n

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

The applications using linear bushings are infinite.\u00a0 Where there is any linear movement a bushing can be used.\u00a0 Diving into more applications using linear bushings we will examine ball screw drives, air cylinder drives, and even a vertical guide.\u00a0 Looking at these applications may give us more inspiration for future designs and insight as to how linear bushings are applied. […]<\/p>\n","protected":false},"author":46,"featured_media":1875,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false},"categories":[1136],"tags":[335,334,329,16,12,223],"aioseo_notices":[],"gutentor_comment":0,"_links":{"self":[{"href":"https:\/\/us.misumi-ec.com\/blog\/wp-json\/wp\/v2\/posts\/1866"}],"collection":[{"href":"https:\/\/us.misumi-ec.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/us.misumi-ec.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/us.misumi-ec.com\/blog\/wp-json\/wp\/v2\/users\/46"}],"replies":[{"embeddable":true,"href":"https:\/\/us.misumi-ec.com\/blog\/wp-json\/wp\/v2\/comments?post=1866"}],"version-history":[{"count":5,"href":"https:\/\/us.misumi-ec.com\/blog\/wp-json\/wp\/v2\/posts\/1866\/revisions"}],"predecessor-version":[{"id":2387,"href":"https:\/\/us.misumi-ec.com\/blog\/wp-json\/wp\/v2\/posts\/1866\/revisions\/2387"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/us.misumi-ec.com\/blog\/wp-json\/wp\/v2\/media\/1875"}],"wp:attachment":[{"href":"https:\/\/us.misumi-ec.com\/blog\/wp-json\/wp\/v2\/media?parent=1866"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/us.misumi-ec.com\/blog\/wp-json\/wp\/v2\/categories?post=1866"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/us.misumi-ec.com\/blog\/wp-json\/wp\/v2\/tags?post=1866"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}