Standard

 

ACR 122 - Unibody Measuring and Fixturing Systems

Course Description

Provides instruction in a variety of alignment measuring and fixturing systems. Topics include: universal mechanical measuring system, universal laser measuring system, dedicated fixture system, upper body panel measurement, and English/metric tape alignment measurement.

 

 

Competency Areas

Hours

 

Universal Mechanical Measuring System

Class

1

Universal Laser Measuring System

D. Lab

1

Dedicated Fixture System

P. Lab/O.B.I.

3

Upper Body Panel Measurement

Credit

2

English/Metric Tape Alignment Measurement

 

 

 

Prerequisite/Corequisite:

ACR 121

 

Course Guide

 

Competency

After completing this section, the student will:

Hours

Class

D.Lab

P.Lab/

O.B.I.

UNIVERSAL MECHANICAL MEASURING SYSTEM

                                                                       

3

2 

8

Control points

Identify the four basic control points used in measuring frame damage.

 

 

 

Centering gauges

Demonstrate installing a set of four universal mechanical centering gauges and identify damage.

 

 

 

Measurements

Make diagonal measurements with Tram gauge and/or English/metric tape.

 

 

 

UNIVERSAL LASER MEASURING SYSTEM

3

4 

8

Datum points

Identify datum measurements from a frame manual.

 

 

 

Master control bar

Demonstrate the use of a master control bar by centering, squaring, and leveling bar to the vehicle with attachments and Laser gun.

 

 

 

Measurements

Determine amount of damage by attaching two more control bars to damage and measuring with Laser gun and English/metric tape.

 

 

 

DEDICATED FIXTURE SYSTEM            

2

2 

8

Fixture locations

Duplicate location of fixtures on transverse beams of dedicated bench to mate with underbody control points of vehicle according to manufacturers specifications.

 

 

 

 

Identify four of the more common types of fixtures used on the bench.

 

 

 

Measurements

Analyze damage and explain how to match fixtures to control points.

 

 

 

UPPER BODY PANEL MEASUREMENT

1

2 

6

Measurement systems

Specifications

Demonstrate the measuring process of the upper body panels and MacPherson Strut Systems using the different measuring systems and specification manuals available.

 

 

 

Safety

Follow all shop safety regulations.        

 

 

 

ENGLISH/METRIC TAPE ALIGNMENT MEASUREMENT

1

0

0

Measurement and conversion

Demonstrate the ability to measure using the English or the metric system and convert from one system to the other.

 

 

 

 

Suggested Resources

 

Books

 

Car-O-Liner Southeast. (Year). Car-O-Liner Manual. Atlanta: Author.

Chudy, H. T. (1988). The complete guide to automotive refinishing (2nd ed.). Englewood Cliffs, NJ: Prentice Hall.

Deroche, A. G. (1988). Automotive collision estimating and repair. Englewood Cliffs, NJ: Prentice Hall.

Deroche, A. G. (1988). Automotive refinishing handbook. Englewood Cliffs, NJ: Prentice Hall.

Duenk, L. G., et al. (1984). Auto body repair. Encino, CA: Bennett & McKnight.

I-CAR. (1984). Unibody auto collision repair (Series 1-9). Des Plaines, IL: Author.

Interstate Market Corporation. (Year). Kansas Jack operations manual. Nashville: Author.

Scharff, R. (1988). Motor auto body repair. Albany, NY: Delmar.