The power required from the spindle to rotate a cutting tool (milling machine) or workpiece (turning machine) during a machining operation. The spindle horsepower is typically less than the machine's motor horsepower due to the machine efficiency being less than 100%.
The speed of the cutting tool, measured in inches per minute (IPM), when it is not engaged in the workpiece and rapidly moves from one position to another. The rapid travel rate is used to move between features as well as moving to and from the tool changing position.
An additional mold piece that is used to form an internal undercut that cannot be accessed from the side of the part. Unlike a side-core, an internal core lifter enters the mold along the parting direction, not through the side, and is actuated by the ejection system.
Polyethylene Terephthalate (PET or PETE) has excellent toughness and good gas and moisture barrier properties. PET is used to make blow molded food and non-food containers (soda bottles), sheet applications, carpet and textile yarns, strapping, and molding compounds.
In additive fabrication processes, a part is built by adding layers of material upon one another. The part accuracy and surface finish improve with a smaller layer thickness. The minimum layer thickness is dependent upon the specific process and equipment being used.
A piece of sheet metal that is used as an initial workpiece on which other sheet metal operations will be performed. Blanks are cut from a larger piece of sheet stock in the blanking process and typically have a simple geometric shape, such as a rectangle or circle.
A low melting point polymer that is tough, flexible, transparent, and has stable electrical properties. Applications include flexible films like dry cleaning and grocery bags, flexible lids and bottles, wire and cable applications, and heat sealing applications.
The amount of time (hours) required to program (CNC) or manually layout the instructions for a series of machining operations. This time may include performing calculations, developing the program or instructions, and any testing or inspection that is required.
