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Dr. Scott Smith

Dr. Scott Smith is a professor and chair of the Department of Mechanical Engineering at the William States Lee College of Engineering, University of North Carolina at Charlotte, specializing in machine tool structural dynamics. Contact him via e-mail at [email protected] on the author to view all of their articles!

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Articles March 1, 2015 Dr. Scott Smith
Fixing linear positioning errors
In a typical machine-tool-axis positioning system, the workpiece is mounted on a table that slides along flat, straight guide ways. The table may be supported on the guide ways by rolling elements or by a thin film of oil or grease. A screw controls the table position along the guide way. The rotation of the screw in the nonrotating nut that is fixed to the table drives the table left or right. The rotation of the motor translates into linear table position through the pitch of the screw.
Articles February 1, 2015 Dr. Scott Smith
A clear view on vision panels
The cutting zone in a machine tool is dangerous. Hot chips and large quantities of coolant are often safety threats, but a tool rotating at a high speed is an even greater one.
Articles January 1, 2015 Dr. Scott Smith
Measuring with capacitance sensors
Capacitance sensors are noncontact sensors used in machine tools to measure the distance between a noncontact probe and a target sensor. Because the probe does not physically touch the target, capacitance sensors are beneficial in instances where the target surface is moving, such as a rotating spindle, or delicate, such as a silicon wafer.
Articles September 1, 2014 Dr. Scott Smith
Pros and cons of different guide ways
Scraping is one of the oldest and most historically significant metal-removal processes, notes Dr. Scott Smith in his Machine Technology column of the September 2014 issue of Cutting Tool Engineering magazine.
Articles June 1, 2014 Dr. Scott Smith
Milling with constant force
There are many reasons for cutting force to vary, even during stable milling. These include tool teeth entering and exiting the cut, instantaneous changes in chip thickness, and tooth orientation changing as the tool rotates. However, it is possible to arrange the cutting conditions in a simple way and keep the cutting force constant.
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