What does a CMM Operator do?

Learn all about CMM Operator duties, skills and much more. Get expert advice on how to become a CMM Operator.

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Brenna Goyette
Certified Professional Resume Writer, Career Expert

Published 4 min read

A CMM operator is responsible for running a Coordinate Measuring Machine (CMM), which is used to inspect the dimensions of parts and products. The CMM operator must be able to set up the machine, load the part or product being inspected, and run the necessary programs to perform the inspection. The CMM operator must also be able to interpret the results of the inspection and make any necessary adjustments to the machine or the part being inspected.

CMM Operator job duties include:

  • Read and interpret blueprints, engineering drawings, and work orders to determine the best methods for measuring parts
  • Select and set up the appropriate measuring equipment for each job, including calipers, micrometers, gauges, and CMM machines
  • Perform first-article inspections to ensure that all parts meet the required tolerances
  • Inspect in-process parts at various stages of production to ensure that they are being produced to specifications
  • Use CMM machines to measure parts and record data for quality control purposes
  • Compare CMM data with engineering drawings to identify any deviations from the desired dimensions
  • Investigate causes of dimensional deviations and recommend corrective actions
  • Maintain accurate records of all inspections performed and results achieved
  • Prepare reports detailing the inspection results and corrective actions taken

CMM Operator Job Requirements

A CMM Operator is responsible for operating and maintaining Coordinate Measuring Machines (CMM). They must have a high school diploma or equivalent, as well as on-the-job training. Some employers may require certification from the American Society of Mechanical Engineers (ASME). CMM Operators typically have 1-3 years of experience.

CMM Operator Skills

  • CMM
  • Operator
  • Programming
  • Gauging
  • Inspection
  • Quality Control
  • Blueprint reading
  • GD&T
  • Shop math
  • Metrology
  • CNC

Related: Top CMM Operator Skills: Definition and Examples

How to become a CMM Operator

A CMM Operator is responsible for operating and maintaining a Coordinate Measuring Machine (CMM). This machine is used to measure the physical characteristics of objects, usually metal parts. The CMM Operator must be able to follow instructions and blueprints, as well as perform basic mathematical calculations.

The first step to becoming a CMM Operator is to complete a high school education or equivalent. Many employers prefer candidates who have completed some post-secondary education, such as a certificate or diploma in machining, engineering technology, or manufacturing.

It is also important to have experience working with hand tools and measuring instruments. Many CMM Operators start out as machinists or machine operators. Some companies may require that applicants have experience working with specific types of CMM machines.

Once you have the necessary education and experience, the next step is to find an open position. You can search for job postings online, in newspapers, or through job boards at your local library. When applying for a position, be sure to include your resume and any relevant certificates or licenses.

After being hired, most companies will provide on-the-job training. This training will teach you how to operate the CMM machine and how to use the software associated with it. Once you have completed your training, you will be able to work independently and will be responsible for measuring parts accurately and efficiently.

Related: CMM Operator Resume Example

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