Job Ready Assessment Blueprint Precision Machining Test Code: 4052 / Version: 01 Copyright 2009. All Rights Reserved.
General Assessment Information Blueprint Contents General Assessment Information Written Assessment Information Specific Competencies Covered in the Test Sample Written Items Performance Assessment Information Sample Performance Job Test Type: The Precision Machining industry-based credential is included in NOCTI s Job Ready assessment battery. Job Ready assessments measure technical skills at the occupational level and include items which gauge factual and theoretical knowledge. Job Ready assessments typically offer both a written and performance component and can be used at the secondary and post-secondary levels. Job Ready assessments can be delivered in an online or paper/pencil format. Revision Team: The assessment content is based on input from secondary, post-secondary, and business/industry representatives from the states of Missouri, New York, North Carolina, Oregon, Pennsylvania, and Virginia. CIP Code 48.0501- Machine Tool Technology/Machinist Career Cluster 13- Manufacturing 51-4034.00- Lathe and Turning Machine Tool Setters, Operators, and Tenders, Metal and Plastic In the lower division baccalaureate/associate degree category, 1 semester hour in Introduction to Engineering Technology (Continued on the following page) Page 2 of 11
General Assessment Information (continued) The Association for Career and Technical Education (ACTE), the leading professional organization for career and technical educators, commends all students who participate in career and technical education programs and choose to validate their educational attainment through rigorous technical assessments. In taking this assessment you demonstrate to your school, your parents and guardians, your future employers and yourself that you understand the concepts and knowledge needed to succeed in the workplace. Good Luck! The International Sign Association (ISA) represents manufacturers, suppliers and users of on-premise signs and sign products from all 50 states and around the globe. The sign and visual communications industry is a $37.5 billion business that employs more than 200,000 individuals. One of ISA s long term goals is to showcase and promote the many exciting and diverse career opportunities that exist within the sign and visual communications industry and to apprise students of the abundant employment opportunities that are present to skilled and qualified candidates. ISA strongly encourages and supports students that work to enhance their educational achievements by completing NOCTI assessments. Page 3 of 11
Written Assessment NOCTI written assessments consist of questions to measure an individual s factual theoretical knowledge. Administration Time: 3 hours Number of Questions: 149 Number of Sessions: This assessment may be administered in one, two, or three sessions. Areas Covered Organization and Shop Practices Measurement/Inspection Metallurgical Processes and Heat Treating Blueprint Interpretation and Process Planning Layout and Benchwork Band Saw Machines 10% 7% 8% 7% 9% 6% Lathes 22% Milling Machines 15% Surface Grinder Computer Numerical Control (CNC) Programming, Preparation, Operations 7% 9% Page 4 of 11
Specific Standards and Competencies Included in this Assessment Organization and Shop Practices Demonstrate safe work habits and operating procedures Clean and maintain personal work area and equipment Select and appropriately use cutting fluids Identify and appropriately use personal protective equipment (PPE) Identify environmental and safety considerations established by the EPA, OSHA, and listed in MSDS publications Measurement/Inspection Identify, select, and calibrate precision and semi-precision measuring tools Measure workpiece to verify compliance with print specifications Display knowledge of quality control standards and process improvement Metallurgical Processes and Heat Treating Identify the properties and characteristics of common metals Identify the steel identification system (ANSI) Identify properties that affect machinability Identify heat treating processes and objectives Precision Machining Blueprint Interpretation and Process Planning Interpret blueprints with geometric dimensioning and tolerancing (G D & T) symbols Develop a production plan based on blueprint specifications (Continued on the following page) Page 5 of 11
Specific Standards and Competencies (continued) Layout and Benchwork Identify and use hand tools Identify and safely use power hand tools Grind and shape tools using a pedestal/bench grinder Perform semi-precision layout Band Saw Machines Identify parts and preventive maintenance of a band saw Explain safe principles of operation Set up and perform band saw machine operations Lathes Identify parts and preventive maintenance of a lathe Explain safe principles of operation Select and maintain appropriate tools Calculate appropriate cutting speed, feed rate, and depth of cut Grind and form lathe tools Demonstrate knowledge of various workholding methods (independent, universal, collet, faceplate, between centers, steady and follower rests) Set up and perform lathe machine operations (turning, boring, threading, taper turning, knurling, grooving and cut-off, drilling and tapping, filing, polishing) Explain and perform threading procedures Identify appropriate uses for carbine inserts (Continued on the following page) Page 6 of 11
Specific Standards and Competencies (continued) Milling Machines Identify parts and preventive maintenance of a mill Explain safe principles of operation Select and maintain appropriate tools Calculate appropriate cutting speed, feed rate, and depth of cut Demonstrate knowledge of various workholding methods (mill vise, table set-ups, angle plates, rotary table/index, v-blocks) Set up and operate milling machines (head alignment, indicate the vise, select tool holder, establishing a part zero, set DRO) Surface Grinder Identify parts and preventive maintenance of a surface grinder Select appropriate grinding wheel Explain safe principles of operation Computer Numerical Control (CNC) Programming, Preparation, Operations Demonstrate knowledge of the axis and coordinate systems Read and write basic machine code Manually program, setup, and operate a CNC machine Page 7 of 11
The purpose of OSHA is to A. enforce employee benefits B. monitor minimum wages C. publish machining standards D. regulate safety in the workplace The process of stacking gage blocks together for accurate measurements is called A. lapping B. honing C. polishing D. wringing Accurate layout lines can be made with a/an A. awl B. punch C. scriber D. pencil The flutes of a twist drill A. facilitate chip removal B. cut along the length of the hole C. size the hole D. burnish the hole surface Use aluminum oxide wheels for A. carbide B. aluminum C. copper D. alloy steel Sample Questions (Continued on the following page) Page 8 of 11
Sample Questions (continued) The first two digits in the ANSI system for identifying steel indicate the A. type of steel B. approximate percentage of the alloying element C. average carbon content in hundredths of one percent D. amount of tungsten Examine the to verify modifications to an original design. A. revision block B. material requirements plan C. material specifications sheet D. text editor A cut-off parting operation is hazardous when work is turned A. in an independent chuck B. in a universal chuck C. in a collet D. between centers If a 0.015-inch feed is set on the lathe, the number of spindle revolutions required to move the tool bit 2.250 inches along the work is A. 100 B. 125 C. 137 D. 150 An incremental position is relative to a/an A. current position B. fixed datum C. factory preset D. original position Page 9 of 11
NOCTI performance assessments allow individuals to demonstrate their acquired skills by completing actual jobs using the tools, materials, machines, and equipment related to the technical area. Administration Time: 3 hours Number of Jobs: 2 Areas Covered: Performance Assessment 50% Milling Operations Participants will safely operate the mill with correct measurements for quality work, and clean up and take care of the tools and equipment. 50% Lathe Operations Participants will safely operate the lathe with correct measurements for quality work, and clean up and take care of the tools and equipment. 50% 50% Page 10 of 11
Sample Job Milling Operations Maximum Time: 2 hours Participant Activity: The participant will receive a piece of cold rolled steel, machine the part on the milling machine according to the specifications provided on a drawing, deburr the part and break all edges, notify the evaluator to inspect the work and to verify that it is in customer-ready condition, and clean up the machines and work area. Page 11 of 11