Lab 01 CNC Operator Employment versus Skills

(1)

Computer-Controlled Machine Tool

Operator, Metal

Lab 1:

(2)

Typical Job Description

Responsibilities Include:

– _{Develops and proof tests NC programs for each planned machining operation} – _{Plans processing sequences}

– _{Prepares and checks programs}

– _{Trains and instructs shop personnel in program operation/function}

– _{Performs machinist duties as required, including machine set-up and operation} Qualifications Include:

– _{High school diploma or general education degree (GED), or equivalent combination of} education and experience

– _{CAM software experience specific to the manufacturer is essential} – _{Prior lathe/mill programming required}

– _{Must be team oriented}

– _{Must possess good communication skills}

– _{Experience training shop personnel on program operation}

– _{Prior machinist experience highly desirable. Preference will be given to individuals with} set-up and operating experience of mills and lathes (manual or CNC)

– _{Should be able to read and interpret geometric tolerancing} – _{Must be able to perform simple shop math}

(3)

New Mexico Department of Labor



https://www.jobs.state.nm.us/

occprofiledata.asp?session=

occdetail_lms&geo=3501000000

– July 2, 2008



Labor Market Summary for

Computer-Controlled Machine Tool Operator

(4)

Labor Market Wage Rates for

Computer-Controlled Machine Tool Operators, Metal



The March 2007 hourly wage for

“Computer-Controlled Machine Tool Operators, Metal” in

New Mexico:

–

Entry Level

$12.90

–

Mean

$17.08

–

Experienced

$19.17

(5)

Required Skills (NIMS standards)

National Institute for Metalworking Skills Standard - Highlights

 Identify & Demonstrate Usage of Machine Safety & Personal

Protective Equipment

 Demonstrate Compliance with Lock-out/Tag-out Procedures

and OSHA Requirements and Guidelines

 Machine Operations & Material Handling, Hazmat Materials

Handling and Storage, including EPA, Hazmat, and OSHA

 Perform the Inspection of Parts  Process Control

(6)

Required Skills (NIMS standards)

 Manual Operations: Layout

 Manual Operations: Benchwork  Sawing

 Job Process Planning  Drilling Operations

 Milling: Square Up a Block

(7)

Required Skills (NIMS standards)

 CNC: Programming - Milling

 CNC: Write a Simple CNC Milling Program and Review Tool

Path

 CNC: Operate a CNC Milling Machine level I

 CNC: Operate a CNC Milling Machine Level II or CNC

Machining Center

 CNC: Advanced Manual Programming

 Use Manufacturing Modeling Software to Create Milling

Programs

(8)

Required Skills (NIMS standards)

 CNC Programming – Turning

 CNC: Write a Simple CNC Turning Program and Review Tool

Path

 CNC: Operate a CNC Lathe Level I

 CNC: Operate a CNC Lathe Level II or Turning Center  CNC: Advanced Manual Programming

 Use Manufacturing Modeling Software to Create Programs  General Housekeeping & Maintenance

(9)

Most Fabricators are Small Companies



Integrated Mach Co,

Albuquerque



J.W. Industries Inc.,

Albuquerque



K.L. Steven Co, Inc.,

_Rio

Rancho



Kendal Precision,

Albuquerque



Standard Mach Co,

Albuquerque



Sun Country Industries,

Albuquerque



TEAM Techno, Inc.,

(10)

NM Industries that employ

Computer-Controlled Machine Tool Operators

Industry Total % in NM

 Machinery Manufacturing 38 66.7%

 Fabricated Metal Product Manufacturing 7 12.3%  Computer and Electronic Product Mfg 6 10.5%  Electrical Equipment and Appliances 3 5.3%

 Transportation Equipment Manufacturing 3 5.3%

(11)

Scope of Practice Comparison

 In industry, the technician must learn manufacturer

specific processes, machine specific limitations and capabilities, and high performance characteristics

 In these laboratories, you will learn general

processes and basic tooling considerations

 The focus is on helping the designer and engineer

gain a basic understanding of the CNC

(12)

Forethought Lowers Costs

With experience in manufacturing a part, the designer can avoid costly manufacturing procedures, and sell cost saving considerations to clients

Unnecessary tool changes

Material considerations related to

cost of required tooling

Design requiring special cutting

tools

Unnecessary surface finishes

Assembly / disassembly

complications

Unnecessary part reorientation

Using less expensive materials

Using standard material sizes to

reduce machining

Are all machined surfaces

necessary

Are tolerances closer than they

need to be

(13)

Needs Statement

The market to specialize as a Computer-Controlled

Machine Tool Operator is too specialized to ensure

an employment opportunity

HOWEVER

The knowledge needed by engineers and designers

related to designing parts compatible with CNC

(14)

Required Skills (laboratory specific)

 Identify CNC system components, and utilize media input/output and storage of

CNC programs

 Develop an understanding of manual machine tool practices

 Develop an ability to manipulate the control systems, and correctly control tool

movement without damaging equipment using downloaded media

 Develop an ability to manipulate the components, functions and operation of tools

using the Machine Control Unit (MCU).

 Read and interpret CNC prints

 Perform Geometric Dimensioning and Tolerancing (GD&T) and inspection methods  Perform mathematical computations for CNC Programming, use proper

programming terminology, and implement G machine code

 Attempt to use typical machine shop practices, as well as CNC programming and

setup operations

– _{Safe working practices at all times} – _{Clean working environment}

(15)

Parting (pun intended) Thoughts

 If a machined part is to be square on one end and round on the

other, which end do you machine first? Why?

 If a hole must be drilled at a 45 degree angle to a machined

surface, how is the drill kept from slipping? In CNC what does this mean?

 Once you machine one side of a part, how do you flip the part