{"id":1852,"date":"2016-11-22T11:00:02","date_gmt":"2016-11-22T17:00:02","guid":{"rendered":"http:\/\/blog.misumiusa.com\/?p=1852"},"modified":"2021-11-02T16:59:05","modified_gmt":"2021-11-02T21:59:05","slug":"linear-bushings-application-examples","status":"publish","type":"post","link":"https:\/\/blog.misumiusa.com\/linear-bushings-application-examples\/","title":{"rendered":"Working With Linear Bushings Pt 4: Application Examples"},"content":{"rendered":"

The past few blog posts have been regarding the types of bushings and load capacity for the next few posts we will focus on application examples.\u00a0 Linear bushings can be used in a variety of ways to carry out certain functions and move on a desired axis.\u00a0 Many characteristics come into play.\u00a0 Linear bushings are great for low cost solutions or for a more well-balanced linear guide design there are bearings.\u00a0 Choosing bushing style helps narrow down what type of actuator to use, cylinder driven which is low in price or motor driven which is higher in price.\u00a0 For vertical direction guidance, the drive center can be placed at the guide center enabling simple and compact mechanism structure.<\/p>\n

In this post we will explain the usage and characteristics of\u00a0linear bushings<\/a>\u00a0through application examples on simplified automation machinery.<\/p>\n

XYZ Drive Mechanism<\/strong><\/p>\n

This application is called an XYZ Drive Mechanism.\u00a0 It utilizes synchronous belt drives and a step motor.\u00a0 Synchronous belt drives have various advantages such as quietness, light-weight, low cost, as well as not requiring lubrication maintenance. In 2-axis XY table designs, top Y axis weight is lightened to reduce the load on the bottom X axis. For this, synchronous belt drive is often used for Y-axis design.<\/p>\n

[Fig.1] shows a typical 3-axis XYZ drive mechanism.\u00a0 As you can see in the outlined drawing, linear guides are used on X-axis with the bearings being supported throughout the entire length of the axis.\u00a0 On the Y and Z axis, linear bushings are used on linear shafts supported on both ends.\u00a0 For driving, synchronous belts and a ball screw are used.\u00a0 All movement is driven by the step motor on each axis converting rotary movement to linear movement via the synchronous belts.<\/p>\n

\"xyz-drive\"<\/p>\n

Pallet Transfer Machine, Y-Axis<\/strong><\/p>\n

Below is [Photo 1] which depicts an IC chip pallet transfer machine, a Y-axis application example. The Y-axis motion is converted into reciprocation motion with a synchronous belt, this is where you will see the linear bushings at work on the 2 supported shafts.<\/p>\n

\"ic-chip-pallet\"<\/p>\n

Single Axis Robot<\/strong><\/p>\n

\"single-axis-robot\"<\/p>\n

[Fig.2] is an application example for a single axis robot.\u00a0 The dual linear bushing guides are widely spaced for good load capacity and accuracy.\u00a0 The synchronous belt<\/a> drive has light weight and quiet operational characteristics.\u00a0 Vertical inline orientation of the shaft and belt prevents the bushings from rotating, even for this one shaft structure design.<\/p>\n

The traveling pulley arrangement in [Fig. 3] below is used for high motor power efficiency and precision positioning.<\/p>\n

\"traveling-pulley\"<\/p>\n

In order to lift the load (W) in [Fig. 3] by the distance of (S), the rope will need to be pulled up by twice the distance of (S).\u00a0 This requires only half the force of the load (W).\u00a0 If move distance is doubled, motor angular resolution is doubled and the positioning resolution improves.\u00a0 Also, pulley backlash and lost motion is reduced by half.\u00a0 Overall this improves precision.\u00a0 If load is reduced by half, then the motor speed can be doubled for higher motor efficiency and a smaller motor can be used.\u00a0 This improves efficiency.\u00a0 Applying this principal to linear bushings will allow the designer to choose the correct types for high load, high speed or high accuracy.<\/p>\n

These are a few of the simplest machines and applications linear bushings are used on.\u00a0 \u00a0More application examples using linear bushings will be covered in the next post!<\/p>\n","protected":false},"excerpt":{"rendered":"

The past few blog posts have been regarding the types of bushings and load capacity for the next few posts we will focus on application examples.\u00a0 Linear bushings can be used in a variety of ways to carry out certain functions and move on a desired axis.\u00a0 Many characteristics come into play.\u00a0 Linear bushings are great for low cost solutions […]<\/p>\n","protected":false},"author":46,"featured_media":1857,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false},"categories":[1136],"tags":[332,91,12,333],"aioseo_notices":[],"gutentor_comment":0,"_links":{"self":[{"href":"https:\/\/blog.misumiusa.com\/wp-json\/wp\/v2\/posts\/1852"}],"collection":[{"href":"https:\/\/blog.misumiusa.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.misumiusa.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.misumiusa.com\/wp-json\/wp\/v2\/users\/46"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.misumiusa.com\/wp-json\/wp\/v2\/comments?post=1852"}],"version-history":[{"count":4,"href":"https:\/\/blog.misumiusa.com\/wp-json\/wp\/v2\/posts\/1852\/revisions"}],"predecessor-version":[{"id":1863,"href":"https:\/\/blog.misumiusa.com\/wp-json\/wp\/v2\/posts\/1852\/revisions\/1863"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.misumiusa.com\/wp-json\/wp\/v2\/media\/1857"}],"wp:attachment":[{"href":"https:\/\/blog.misumiusa.com\/wp-json\/wp\/v2\/media?parent=1852"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.misumiusa.com\/wp-json\/wp\/v2\/categories?post=1852"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.misumiusa.com\/wp-json\/wp\/v2\/tags?post=1852"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}