The repetition of industrial robot locates how precision is measured

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  • source:WEDEMEYER CNC Machining
Repeating fixed position precision is one of function index with industrial the mainest robot. Positional repeatability is the only position performance index that industrial robot manufacturer appoints, in theirs there is 0 on propagandist book.

010 millimeter and 0.

Change between 100 millimeter. However, metric produced a change from now on, how to measure the volume of positional repeatability after all? If you are lucky, advanced like us metric equipment has a lot of, you can use laser interferometer. Latter is very accurate (0.

001 millimeter uncertainty of measurement) , but the price is high (about 50000 dollars) , build measure to there is a coordinate only in same time hard. You also can use CMM, but this is not actual apparently. What you can use all sorts of types is three-dimensional measure equipment, but use laser of manufacturer of certain industry robot dogs appearance has used laser of demarcate of a few robots to dog because of them appearance. Do so we answer after all not should is the heavy complex number that should believe industrial robot manufacturer is offerred occupied? A basic method is in ISO/TR 13309: The 1995 installation that put forward to rely on 3 orthogonality to use positional sensor. I bought a such unit recently: Accurate project of 31 bougie IBS. Latter is wireless, light and cabinet, and not expensive (about 15000 dollars) . Its uncertainty of measurement is about 0.

001 Mm, its measure range is 3.

5 millimeter. Unfortunate is, it uses sensor of electric vortex flow to need special and fiducial ball, cost exceeds 500 dollars every installation is in fine bine and break very easily. A when the repetition of industrial robot locates precision is how to be measured very important, our three-dimensional explore new package demarcate board. Latter is the principle with 3 balls substantially the athletic platform in chamfer of 3 V form. The industrial robot that sending 200iC of spouse of that division LR in the three-dimensional probe that checks us (the general aviation that borrows us) with robot of ABB IRB 120 when, we use a custom-built center to receive 3 0.

5 ″ fiducial ball, each bisect opens about 300 millimeter. Use very simple Matlab code, we can get positional data to erupt simultaneously from each figure index send robot controller to carry aether network. The controller of every robot, run a program next, carry out automatic test. This test program is as follows. Given to extreme fixed position, the robot is automatic fiducial to 3 of neat three-dimensional probe ball is through adjusting a directive for many times 0 (± 0.

002 millimeter) . Next the position that we record end-effector (the configuration that is a robot actually) send each 30 times with the robot fiducial ball, press order of suitable hour hand first next anticlockwise order. The way that we tested 5 kinds of different end-effector and the setting is in buy of parity of every robot photograph. We believe, our equipment was offerred most the measurement of economic material benefit the repetition of industrial robot locates the method of precision and practice. If you have fun at, we are very glad to can share our experience with you. CNC Milling