• MMS Youtube
  • MMS Facebook
  • MMS Linkedin
  • MMS Twitter
10/22/2010 | 1 MINUTE READ

Video: In-Process Scanning of a Turned Profile—via Robot

Facebook Share Icon LinkedIn Share Icon Twitter Share Icon Share by EMail icon Print Icon

A robot reaching into a lathe measures along the entire part length in seconds, determining whether additional machining is needed.

Loading the player ...


Share

Facebook Share Icon LinkedIn Share Icon Twitter Share Icon Share by EMail icon Print Icon

Autonetics of Chapel Hill, North Carolina is a manufacturing automation specialist, but chief technology officer Chris Wezyk says the specialty is more nuanced than that. The company solves automation challenges by combining off-the-shelf devices in unusual ways, he says. This video shows an example—a pair of digital micrometers mated to a robot in order to provide rapid, accurate measurements of the OD features of a turned workpiece. The robot (from Kawasaki) simply sweeps the length of the part in seconds to let the micrometers (from Micro-Epsilon) obtain thousands of data points in seconds—data that can be used to automatically develop a highly precise CAD model. Software written by Autonetics interprets the measurements, allowing the information to be applied to a follow-up machining pass, among other potential uses.

Mr. Wezyk says the accuracy is better than one might imagine. Robot positioning is precise, but a robot typically is not used for the very finest positioning and measurement applications. In this application, though, the digital micrometer provides for the accuracy in the part’s radial axis, while the location of the lathe’s spindle face is a known value along the part’s axial direction. This value gets used as a reference to compensate for the robot’s positioning along the lathe’s Z axis. As a result, a quick sweep through just a small Z-axis range is enough to let the robot pick up any precise Z-axis location where the diameter measurement needs to be known.

The same robot can also be used to inspect internal features, he says. To do this, the robot would release the digital micrometer set and pick up another device—probably an array of capacitive plug gages enabling it to measure a range of inner diameters.
 

RELATED CONTENT

  • Composites Machining for the F-35

    Lockheed Martin’s precision machining of composite skin sections for the F-35 provides part of the reason why this plane saves money for U.S. taxpayers. That machining makes the plane compelling in ways that have led other countries to take up some of the cost. Here is a look at a high-value, highly engineered machining process for the Joint Strike Fighter aircraft.

  • Surface Texture From Ra to Rz

    The irregularity of a machined surface is the result of the machining process, including the choice of tool; feed and speed of the tool; machine geometry; and environmental conditions. This irregularity consists of high and low spots machined into a surface by the tool bit or a grinding wheel.

  • DFGT - Double Flank Gear Testing

    Functional gear testing, also known as total radial composite deviation, is a method of looking at the total effect of gear errors. This test method simulates the conditions under which a set of gears is likely to operate as a result of the gears meshing together.