CNC Mill Quiz and Answers

The X-axis moves to the ______ ___ ______ from the operator. - left and right The Y-axis moves ______ ___ ______ from the operator. - front and back True or False: Angles can be cut on a vertical milling machine by tilting the head. - True True or False: The table can be moved up or down, manually or by power. - False Describe two methods for holding a work piece on a milling machine. - The use of clamps or vises. Explain the basic difference between a horizontal milling machine and a vertical milling machine. - Vertical milling machine has a vertically oriented spindle. Name three common operations, other than machining a rectangular shape, which can be done using a vertical milling machine. - Cutting slots, contours and groves, and for various drilling operations. Identify the cutting tools that would usually be used to cut slots and grooves. - the endmill Why is an endmill better suited for cutting grooves than other cutters? - Because an endmill can cut steel with either the bottom or side edges. Name the adapter used to hold a straight-shank cutter in a machine spindle. - a collet What is the normal direction of rotation for nearly all cutters used in a vertical milling machine? - clockwise Name the milling accessory used to block a work piece up so that it clears the top or the vise jaws. - parallels Up and Down = __ axis - Z Side to Side = __ axis - X Front to Back = __ axis - Y FPT (feed per tooth) or IPT (inches per tooth) or Chip Load - The thickness of the chip removed by one revolution of the cutting tool Edge finder - Used to find a reference edge in milling operations Face milling - When the face of a cutting tool machines a surface Peripheral milling - Using the outside boundary of a tool to machine a surface Conventional milling - The workpiece travels in an opposite rotational direction to the cutting tool