I have engineering lab due in 30 hours

Therblig Analysis Checklist - Page 1 of 2

THERBLIG ANALYSIS CHECKLIST

Reach and Move Yes No

1. Can either of these therbligs be eliminated? ì ì 2. Can distances be shortened to advantage? ì ì 3. Are the best means (conveyors, tongs, tweezers) being used? ì ì 4. Is the correct body member (fingers, wrist, forearm, shoulder) being used? ì ì 5. Can a gravity chute be employed? ì ì 6. Can transports be effected through mechanization and foot-operated devices? ì ì 7. Will time be reduced by transporting in larger units? ì ì 8. Is time increased because of the nature of the material being moved or because of a

subsequent delicate positioning? ì ì 9. Can abrupt changes in direction be eliminated? ì ì

Grasp Yes No

1. Would it be advisable for the operator to grasp more than one part or object at a time? ì ì 2. Can a contact grasp be used rather than a pickup grasp? ì ì 3. In other words, can objects be slid instead of carried? ì ì 4. Will a lip on the front of bins simplify grasping small parts? ì ì 5. Can tools or parts be pre-positioned for easy grasp? ì ì 6. Can a vacuum, magnet, rubber fingertip, or other device be used to advantage? ì ì 7. Can a conveyor be used? ì ì 8. Has the jig been designed so that operators may grasp the part easily when removing it? ì ì 9. Can the previous operator pre-position the tool or the work, simplifying grasp for the

next operator? ì ì 10. Can tools be pre-positioned on a swinging bracket? ì ì 11. Can the work table surface be covered with a layer of sponge material so that the fingers

can enclose small parts more easily? ì ì

Release Yes No

1. Can the release be made in transit? ì ì 2. Can a mechanical ejector be used? ì ì 3. Are the bins that contain the part after its release the proper size and design? ì ì 4. At the end of the therblig release, are the hands in the most advantageous position for the next

therblig? ì ì 5. Can multiple units be released? ì ì

Pre-Position Yes No

1. Can a holding device at the workstation keep tools in the proper positions and the handles in upright positions? ì ì

2. Can tools be suspended? ì ì 3. Can a guide be used? ì ì 4. Can a magazine feed be used? ì ì 5. Can a stacking device be used? ì ì 6. Can a rotating fixture be used? ì ì

Use Yes No

1. Can a jig or fixture be used? ì ì 2. Does the activity justify mechanized or automated equipment? ì ì 3. Would it be practical to make the assembly in multiple units? ì ì 4. Can a more efficient tool be used? ì ì 5. Can stops be used? ì ì 6. Is the tool being operated at the most efficient feeds and speeds? ì ì 7. Should a power tool be employed? ì ì

Therblig Analysis Checklist - Page 2 of 2

Search Yes No

1. Are articles properly identified? ì ì 2. Perhaps labels or color could be utilized? ì ì 3. Can transparent containers be used? ì ì 4. Will a better layout of the workstation eliminate searching? ì ì 5. Is proper lighting being used? ì ì 6. Can tools and parts be pre-positioned? ì ì

Select Yes No

1. Are common parts interchangeable? ì ì 2. Can tools be standardized? ì ì 3. Are parts and materials stored in the same bin? ì ì 4. Can parts be pre-positioned in a rack or tray? ì ì

Position Yes No

1. Can such devices as a guide, funnel, bushing, stop, swinging bracket, locating pin, recess, key, pilot, or chamfer be used? ì ì

2. Can tolerances be changed? ì ì 3. Can the hole be counterbored or countersunk? ì ì 4. Can a template be used? ì ì 5. Can the elimination of burrs decrease the problem of positioning? ì ì 6. Can the article be pointed to act as a pilot? ì ì

Inspect Yes No

1. Can inspection be eliminated or combined with another operation or therblig? ì ì 2. Can multiple gages or tests be used? ì ì 3. Will inspection time be reduced by increasing the illumination? ì ì 4. Are the articles being inspected at the correct distance from the worker's eyes? ì ì 5. Will a grazing light accentuate defects and facilitate inspection? ì ì 6. Would an electric eye be useful? ì ì 7. Does the volume justify automatic electronic inspection? ì ì 8. Would a magnifying glass facilitate the inspection of small parts? ì ì 9. Is the best inspection method being used? ì ì

10. Has consideration been given to polarized light, template gages, sound tests, performance tests, and so on? ì ì

Rest to Overcome Fatigue Yes No

1. Is the best order-of-muscles classification being used? ì ì 2. Are temperature, humidity, ventilation, noise, light, and other working conditions satisfactory? ì ì 3. Are benches of the proper height? ì ì 4. Can the operator alternately sit and stand while performing work? ì ì 5. Does the operator have a comfortable chair of the right height? ì ì 6. Are mechanical means being used for heavy loads? ì ì 7. Is the operator aware of his or her average intake requirements in calories per day? ì ì

Hold Yes No

1. Can a mechanical jig, such as a vise, pin, hook, rack, clip, or vacuum, be used? ì ì 2. Can friction be used? ì ì 3. Can a magnetic device be used? ì ì 4. Should a twin holding fixture be used? ì ì