Live Centers - University of Idaho

Live Centers - University of Idaho

Boring Bars Purpose Boring bars are used to size a hole when there is not a drill or reamer that can meet the appropriate tolerance. Boring bars come in various shapes and sizes. They can be used to cut contours such as those found in nozzles. Nozzle Types of Boring Bars Tips -Always use cutting oil. -Stop periodically to remove chips if they are building up in the part. -Cuts are made to the diameter, not the radius. -Initial cuts are made to slightly less than the desired depth. A finishing cut is made to the final depth. -Reduce the protruding length of the boring bar as much as possible to reduce deflection. -Borings bars are universal, however the tool mounts are different for CNC and manual lathes. by Bryce Winterbottom & Beth Madsen Boring Bars (contd) Mounted Boring Bar

Centered Bar Setup 1. Choose a size that is relative to the size of the hole in which you are boring. 2. Mount the boring bar in the tool holder using the Allen screws to secure it in place. 3. Place the mounted boring bar on the lathe with the tool parallel to x-axis. Lock the tool in place with the handle shown. 4. The tool needs to be centered vertically on the part as shown. Operation 1. Use a standard drill or reamer to cut the hole as close to the actual size as possible. 2. Zero the lathe measurement controls for the y-axis on the cutting surface. 3. Cut with the bar traveling into the part, cutting .005 to .030 per pass, to a depth slightly short of the desired final depth. 4. Decrease the speed of the lathe as the cutting diameter becomes larger. 5. Cut .002 on the final pass.

Recently Viewed Presentations

  • SS8H11 -

    SS8H11 -

    Others want to keep Georgia history alive. Martin Luther King, Jr.(1929 - 1968) Preacher & Activist. ... became the 1st African American woman from GA elected to Congress. ... Savannah's port is the fourth-busiest container port in the U. S....
  • P14452: Detailed Design Review - EDGE

    P14452: Detailed Design Review - EDGE

    Review (10 mins) Updated Specifications. Mechanical Design (30 minutes) Temperature. Vibration. Solutions. Analog Design (20 minutes) Analog Signal Conditioning. Example Sensors. Power. Digital Design (10 minutes) Microprocessor Selection. Software Processes. Moving Forward (10 minutes) Questions (10 minutes)
  • Nervous System - Western Oregon University

    Nervous System - Western Oregon University

    Selection has favored a central nervous system to control responses. Four basic operations Determine type of stimulus Signal the intensity of a stimulus Integrate responses from many sources Initiate and direct operations Type of stimulus How does the brain "know"...
  • Diego Rivera

    Diego Rivera

    Frida Kahlo (1907-l954) El accidente del bus, 1925 Frida Kahlo y Diego Rivera el día de su boda 19 de agosto, 1929 La casa azul Fotos de Frida Kahlo Autorretratos de Frida Kahlo Fotos de su sufrimiento Retratos de otras...
  • Marcum Construction Industry

    Marcum Construction Industry

    An asset is transferred when (or as) the customer obtains control of that asset . Revenue to be recognized over time (i.e. use of percentage of completion), the transfer of control of the goods and services have to meet ....
  • Chapter 1 Matter, Measurement, and Problem Solving

    Chapter 1 Matter, Measurement, and Problem Solving

    U.S. Customary System. Also called: American System. English System. Inch. Gallon. Pound. Teaspoon. Metric system. Syst. è. me International (SI) International decimalized system of measurement. First adopted by France in 1791 . Length - meter. Mass - kilogram. Time -...
  • ME 3031 Lecture Notes Week 1

    ME 3031 Lecture Notes Week 1

    Types of Errors Difference between measured result and true value. Illegitimate errors Blunders resulting from mistakes in procedure. You must be careful.
  • Mesopotamia Review

    Mesopotamia Review

    Mesopotamia Review What's in your brain? Lesson 1 - Geography What is the name of the Region that we are studying? What does the name mean? What 2 rivers lie at the outsides of the region? Identify the advantages and...