CNC Operator

Job Description
CNC Operator (Willemin)
Responsibilities

• Prepare and operate CNC machines to perform tasks such as drilling, grinding, milling etc.
• Understand specifications of the task at hand and the desired result by reading blueprints, mechanical drawings etc.
• Translate instructions into computer commands so the machines can perform the correct function
• Prepare and load raw materials and parts onto the machines
• Prepare a test run to check if the machines produce outputs according to specifications
• Set machines to complete full cycles to fabricate large number of parts
• Supervise the machines while they execute the tasks and make any necessary adjustments to produce a better result
• Inspect and measure finished products and compare them with requirements to determine if the process has been completed properly

Motion is controlled along multiple axes, normally at least two (X and Y), and a tool spindle that moves in the Z (depth). The position of the tool is driven by motors through a series of step-down gears, in order to provide highly accurate movements, or in modern designs, direct-drive stepper motor or servo motors. Open-loop controls work as long as the forces are kept small enough and speeds are not too great.

On commercial metalworking machines, closed-loop controls are standard and required in order to provide the accuracy, speed, and repeatability demanded.

• CNC machining is ideal for forgings, castings, plates, or blocks of steel
• The use of higher production, special fixturing, and palletizing systems are created to facilitate the volume efficiently
• Tool changers in the machine store multiple tools, and the machine picks a tool for the operation, puts it back, picks the next tool and repeats the process until the product is machined to a finished state
• Fixtures can hold any number of parts from approximately one to 40