CNC Programmer III in Carson, CA at Ducommun

Date Posted: 2/7/2021

Job Snapshot

Job Description

CNC Programmer III       

Job Summary & Essential Functions:

Responsible for writing and updating computer-numerical control (CNC) programs to control contour path machining of metal parts or tooling on automatic machine tools.


Analyzes drawings, sketches, and design data of part to determine dimension and configuration of cuts, selection of cutting tools, and machine speeds and feed rates.
Creates and evaluates tool designs and coordinates with engineering for appropriate changes.
Analyzes and designs machine holding fixtures for parts.
Computes angular and linear dimensions, radii, and curvatures, and outlines sequence of operations required to machine part.
Prepares geometric layout using GIBBS CAM software to show location of reference points and direction of cutting paths.
Writes instruction sheets, check sheets, and cutter lists to guide setup and operation of machine.
Writes programs for multi- axis CNC milling & lathe machines


Compares computer printout with original program sheet to assure accuracy of machine instructions.
Revises program to eliminate instruction errors or omissions.
Observes operation of programs using NC plot software to prove out tool paths.
Responsible for effectively training, mentoring, operators for evaluating and resolving process issues.
Resolve CNC program and associated manufacturing issues with all relevant departments


Initiate continuous improvement To Do list ideas, set-up time and cycle-times improvements.
Effectively write standard operations instructions.
Set-up and operate all CNC machines in facility.


Responsible for the proper handling and management of hazardous waste generated in their work area.
Resolves CNC program and associated manufacturing issues with all relevant departments.
Other duties as assigned.

Required Experience/Education/Training/Certifications: 

Associate’s degree (A. A.) or equivalent from two-year college or technical school; Minimum 5-7 years related experience in job function and/or training; equivalent combination of education and experience
Three years machining background required

Work Environment and Safety Equipment Required
Specific vision abilities required include close vision, distance vision, peripheral vision, depth perception, and the ability to adjust and focus.
Must be able to effectively communicate.
Regularly required to stand; walk; sit; reach with hands and arms; use hands to finger, handle, or feel objects, tools or controls.
Occasionally required to stoop; kneel; or crouch.
Working conditions are:30% office/computer work, 70% manufacturing environment.
Noise level is usually moderate.
Frequently works near moving mechanical parts.
Safety glasses (ANSI Z87 compliant) required in all manufacturing areas.
Hearing protection must be worn in designated manufacturing areas.
Safety Footwear shall be in accordance with the following: ASTM standard F2413-05 with minimum impact resistance, compression resistance and metatarsal designation ratings of 75 foot pounds (i.e. ASTM F2413-05 I/75 C/75 Mt/75), which are viewable on the inside tag of footwear.

Physical Demands (reasonable accommodations may be made, if necessary):

Physical Abilities                                              Lift /Carry     
Stand - Frequently                                             10 lbs or less - Occasionally
Walk - Frequently                                              11-20 lbs - Occasionally
Sit - Continuously                                              21-50 lbs - Occasionally
Climb – N/A                                                      51-100 lbs - N/A
Crawl - N/A                                                        Over 100 lbs - N/A
Squat or Kneel - Occasionally                           
Bend - N/A                                                        Push / Pull
Fine Manipulation - N/A                                      10 lbs or less - Occasionally
Reach Outward - Occasionally                            10-20 lbs - Occasionally
Reach Above Shoulder - Occasionally                20-50 lbs - N/A
Drive - Occasionally                                          50-100 lbs - N/A
                                                                        Over 100 lbs - N/A

N/A (Not Applicable) - Activity is not applicable to this occupation
Occasionally - Occupation requires this activity up to 33% of the time (.25 - 2.5 hrs/day)
Frequently - Occupation requires this activity from 33% - 66% of the time (2.5 - 5.5 hrs/day)
Continuously - Occupation requires this activity more than 66% of the time (5.5+ hrs/day)

Other Physical Requirements:


The company has reviewed this job description to ensure that essential functions and basic duties have been included. Other duties may be assigned. It is not intended to be construed as an exhaustive list of all functions, responsibilities, skills and abilities. Management reserves the right to add, modify, change or rescind the work assignments in accordance with business needs, and to make reasonable accommodations so that qualified employees can perform the essential function of the job.

Equal Opportunity Employer Veterans/Disabled