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Grayson County College

Machining Technology



Machining Technology

Associate of Applied Science Degree

Expansion in industry has created a demand for the skilled machinist. Technicians with knowledge of machine shop practices are needed to assist in the design, production, tooling, and machine operation in the manufacturing fields. Related instruction and technical information are closely correlated with laboratory work which provides the opportunity to develop ability in the application of theory to the solution of shop problems.



Machining Technology
Associate of Applied Science Degree
Freshman Year
First Semester Second Semester
Subject Semester Hours Subject Semester Hours
Machining Technology 13103 Machining Technology 13203
Machining Technology 14104 Machining Technology 14204
Drafting 13103 Drafting 2400 4
Mathematics 13143 Speech 13113
English 1301 3Social/Behavioral Sciences*3

16
17
Sophomore Year
First Semester Second Semester
Subject Semester Hours Subject Semester Hours
Machining Technology 23103 Machining Technology 23203
Machining Technology 24104 Machining Technology 24204
Machining Technology 25605 Machining Technology 23703
Social/Behavioral Sciences*3 Machining Technology 24804
Elective3

15
17
*GOVT 2305 or 2306; HIST 1301, 1302 or 2301; PSYC 2301, 2315, 2314; SOCI 1301, 2301, or ANTH 2351

Students who desire Associate of Applied Science Degrees, see degree requirements.

Machining Technology

Exit Point I: Machinist I. Upon completion of MACH 1310, 1410, 1320, 1420, and DRAF 1310, students will be eligible for a certificate.

Exit Point II: Machinist II. Upon completion of requirements in Exit Point I, MACH 2310, 2410, 2320, 2420, and DRAF 2400, students will be eligible for a certificate.

Machine Tool Operator

Certificate Program

This course is a study of theory, operations, and trade practices to provide pre-employment training in precision layouts and measurements as well as machine tools and their operations.

A certificate of completion in Machine Tool Operation will be issued upon successful completion of all work.

Machine Tool Operator
Certificate Program
Freshman Year
First Semester Second Semester
Subject Semester Hours Subject Semester Hours
Machining Technology 14504 Machining Technology 24504
Machining Technology 14604 Machining Technology 24604
Drafting 13103 Drafting 13203
Mathematics 13703 Mathematics 13803
Orientation 01000 MET 22502


MET 21501

14
17

Advanced Machine Shop
(Tool and Die)

Associate of Applied Science Degree

This program is designed to prepare students for occupational entry into the tool, die and mold trade. It is the responsibility of tool, die and mold makers to build special tools which make possible the production of identical parts. Tool, die and mold makers work with many types of machine tools, measuring instruments and materials needed to build the tooling for industry. Prerequisite: Graduate of the Machine Shop Technology program and one year machine shop experience, or proficiency in operating at least three of the following machines: mills, lathes, grinders, jig bores or EDMS, with four years machine shop experience.

Advanced Machine Shop
(Tool and Die)
Associate of Applied Science Degree
Freshman Year
First Semester Second Semester
Subject Semester Hours Subject Semester Hours
Machining Technology 25005 Machining Technology 25105
Machining Technology 25205 Machining Technology 25305
Drafting 13103 Drafting 13203
Core Mathematics**3 Mathematics 1380** 3

16
16
**MATH 1314, 1316, 2324 or 2342
Sophomore Year
First Semester Second Semester
Subject Semester Hours Subject Semester Hours
Machining Technology 25505 Machining Technology 25605
English 1301 3Mathematics 2380**3
Mathematics 2370**3 Social/Behavioral Science*3
MET 21501 Speech 13113
MET 22502 Elective3
Social/Behavioral Science*3


17
17
*GOVT 2305 or 2306; HIST 1301, 1302 or 2301; PSYC 2301, 2315, 2314; SOCI 1301, 2301 or ANTH 2351
**MATH 1314, 1316, 2324 or 2342

Students who desire Associate of Applied Science Degrees, see degree requirements.

Machine Shop Course Descriptions

MACH 1310. Basic Machine Tool Technology. (3-0-3). Metal machining techniques and machining practices in the shop. Types of metals and their machining characteristics and application. Measurement systems and instruments layout and bench work. Introduction to the lathe and basic turning procedures.

MACH 1320. Intermediate Machine Tool Technology. (3-0-3). The lathe, its capabilities and limitations. Cutting tool design and materials, feeds, speeds, and time study methods. The American and Unified system of screw threads and methods of producing them. Calculating the taper and selecting the method of machining tapers on the lathe. Form turning and knurling practices. Introduction to the milling machine. Prerequisite: MACH 1310 or consent of instructor.

MACH 1410. Basic Machining Practices. (0-14-4). Should be taken concurrently with MACH 1310, putting into practice technical information acquired in lecture. Care and use of hand tools, metal cutting hand tools, semi-precision measuring and layout tools. Operation of the metal cutting bandsaw, drill press, and elementary work on the engine lathe. Tool grinding and abrasive machine finishing types and application of lubricants and cutting oils.

MACH 1420. Intermediate Machining Practices. (0-14-4). Should be taken concurrently with MACH 1320. Machining metal on the lathe according to methods and time procedures practiced in industry. Performing such operations as threading, taper turning, form turning, knurling, precision turning, boring and eccentric turning. The milling machines and its operations. Prerequisites: MACH 1410 or consent of instructor.

MACH 2310. Advanced Machine Tool Technology I. (3-0-3). The milling machine, its capabilities, limitations, and adaptation. Milling cutters, their design, operation and maintenance. Theory of indexing, gear cutting, spline machining and helical milling. Precision measuring devices, their care and use. Study of metals and their classification according to the American Iron and Steel Institute (AISI) and the Society of Automotive Engineers (SAE). Application and heat treatment of steels. Precision grinding machines and abrasive grinding wheels. Prerequisite: MACH 1320.

MACH 2320. Advanced Machine Tool Technology. (3-0-3). Using reference books to establish limited tolerances and classification of machine fits. Developing needed specifications for machining of standardized hardware. Finding allowances and tolerances for gauges, key way, key seats and keys. Machining power requirements at the cutting tool and motor. Prerequisite: MACH 2310.

MACH 2410. Advanced Machining Practice I. (0-14-4). Should be taken concurrently with MACH 2310. Machining practices employed on the milling machine. Machining of flat, perpendicular and parallel surfaces. Milling simple and compound angles, contours and radii. Uses of a rotary table, dividing head, right angle attachment and the shaping head. Selecting and setting cutting speeds, RPM and feed rates for machining. On-going advanced machining practices on the lathe. Prerequisite: MACH 1420.

MACH 2420. Advanced Machining Practice II. (0-14-4). Should be taken concurrently with MACH 2320. Introduction to precision grinding. Identification and selection of grinding wheels. Grinding surfaces parallel, perpendicular and grinding angular surfaces to tolerances of a few tenths of one thousandth of an inch. Operation of the Universal Tool and Cutter Grinder to grind various types of cutters. Use of an electric or gas furnace to correctly harden tool steels and the hardness testing of these steels. Lathe and millwork to include precision fitting and gauge making. Advance students are taught the beginning elements of Computer Numerical Control (CNC) machining. Prerequisite: MACH 2410.

Machine Tool Operator Course descriptions

MACH 1450. Introductory Principles of Machine Shop. (2-4-4). Related technical information and practical experience in the use of common hand tools, layout and measuring tools, metal cutting bands, power hacksaw, set-up and operation of the drill press. Beginning operations of the engine lathe. Lubricants, cutting oils and coolants, their types and applications.

MACH 1460. Basic Machine Tool Operation. (2-4-4). Comprehensive course in mechanical functions and operations of the lathe. Tool design and grinding as pertains to the lathe ¾ a study in feeds, speeds and time in relation to metal removal. Taper turning, boring and internal threading, and the fitting of mating parts. Prerequisite: MACH 1450 or consent of instructor.

MACH 2450. Intermediate Machining Practices. (2-4-4). Continuation of lathe work, experience in machining to exact tolerances ¾ machining accurate screw threads of various types within the limits specified by A.S.M.E. and S.A.E. Introductory studies and work on the milling machine. Machining surfaces that are flat, pependicular and parallel. Cutting speeds and feeds in relation to various types of metals and sizes and types of cutters. Prerequisite: MACH 1460.

MACH 2460. Advanced Metal Machining Practices. (2-4-4). Continuation in milling machine work with technical information and work experience in the areas of indexing and gear cutting, rotary machining, compound angular work, and work with the vertical slotting attachment. Experiences in surface grinding and the operation of the tool and cutter grinder. Prerequisite: MACH 2450.

MACH 2480. CAD/CAM. (2-4-4). CAD used to design parts. CAM used to set machine tool data, develop tool cutter path. Transfer of program to machine tool controller, machine part as designed. Prerequisite: machining experience and understanding of machine control languages.

Tool and Die Course Descriptions

MACH 2370. Advanced Operator Programming of CNC Machines. (2-2-3). Advanced CNC programming utilizing cutter compensation. Writing and utilizing sub programs within the main program. Programming of multiple axis movement using three dimensional moves. Use and programming of the fourth axis. Prerequisite: MACH 2560 or consent of instructor. (M)

MACH 2500. Introduction to Tooling. (2-6-5). Historical background, present state and future of the craft. Special use of hand tools, machine tools, machine tool attachments, measuring tools, coolants and cutting compounds. Surface texture proving, tolerances, layout, assembly, tool testing and proving. Basic machinery operation. Prerequisites: Graduate of Machine Shop Technology program and one year machine shop experience, or proficiency in operating at least three of the following machines: mills, lathes, grinders, jig bores or EDMS, with four years machine shop experience. (M)

MACH 2510. Advanced Machining. (2-6-5). Sophisticated machinery operation, machining of component parts for dies, jigs, fixtures and gauges. Working to close tolerances, form grinding and cutter grinding, machining intricate shapes, geometry, trigonometry, and the fitting of close tolerance parts. Prerequisite: MACH 2500 or consent of instructor. (M)

MACH 2520. Jigs and Fixtures. (2-6-5). Designing and building jigs and fixtures. Sequence relationship of construction of jigs and fixtures and relationship to machinery where jigs and fixtures are used. Holding and transfer of parts from jig to jig and station to station. Manufactured parts versus purchased parts. Prerequisite: MACH 2510 or consent of instructor. (RM)

MACH 2530. Punch Press Dies and Extrusion. (2-6-5). Designing and building of dies, trim dies for die casting molds, punch press, blank, draw, form, and backward extrusion. Materials used to build dies. Steps used in machining, heat treating, grinding and assembly. Application of these processes to parts being made. Prerequisite: MACH 2510 or consent of instructor. (RM)

MACH 2550. Molds and Mold Making. (2-6-5). Types of molds, injection, cast and compression molds, types of material to be molded, types of material to make molds, design of tooling for all types of molds. (RM)

MACH 2560. Operator Programming of CNC Machines. (2-6-5). Advantages of Computer Numerical Control (CNC) machining in industry. Numerical control terms, definitions and EIA and ISO character coding. Working point to point and contouring machining. Writing programs using standard, R.S. 244, G and miscellaneous code functions. Acquainting students with machine and computer controls, making word set-ups for low production parts run. Prerequisite: MACH 2500 or consent of instructor. (RWM)

Copyright(c) Grayson County College. Updated: 1/24/97

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