4.1 Correctly Load And Unload Parts - Basic Mill Operator Questions And Answers With Latest Study Solutions

It is important to spend time in front of an actual CNC machine to become familiar with what they do and how they operate. A good place to do this is: - Answer-Your local Haas Factory Outlet What is the most common workholding device? - Answer-A mill vise Every workpiece in a job run needs to be located in the same position every time you load the vise. - Answer-True The bottom of the vise locates the workpiece for which axis? - Answer-Z axis Vise jaws come in a number of different configurations. There is a straight, hard Jaw for clamping a part that sits all the way down in the vise. We call these hard jaws because: - Answer-They are made from hardened steel, and are more durable What are the two main components that all machine fixtures have in common? - Answer-They all have a method for locating the part that is repeatable, and they all have a way to clamp the part tightly. The best position for the Operator when blowing off the part and the workholding fixture is: - AnswerStanding behind one of the doors while it's in the closed position, and using only one arm and the airgun in the machine enclosure to blow off the fixture and workpiece There are 3 steps to keep in mind when blowing off the workpiece and fixture. What are the correct 3 steps for this process? - Answer-Open the doors of the machine. First, blow off the part in the fixture; second, remove the workpiece and blow it off; and third, open the fixture or workholding and blow it off, to make sure there are no chips or debris on any locating surface. Cleaning the fixture or workholding device is critical. By not properly cleaning the workholding, you run the risk of: - Answer-Putting a dent or a ding in the surface of your next part(s), or possibly causing the workpiece to be out of position in the viseWhen loading a new part into the workholding vise or fixture, what are the correct steps? - AnswerGently place the workpiece in the vise, first locating the piece against the Z-axis locating surface, then pushing the workpiece against the X and Y locating surfaces. While holding the part in place, firmly tighten the vise or fixture clamp. Pay special attention to ensure the workpiece has not moved away from any of the locating surfaces. Once you have the new workpiece loaded into the vise, and have verified it is in the correct position, the next step is: - Answer-While keeping an eye on the part in the vise, hit the Cycle Start button. Keep your hands near the Feed Hold and E-Stop buttons in case there is a problem. Watch and listen to the cutter engage with the part. If all seems OK, you can take your hands off the keypad panel