I have engineering lab due in 30 hours

EIND 313 Laboratory #5 Demonstration + Study - Introduction to Time Studies

Time Study Equipment

• Stopwatch o Decimal Minute Watch (Meylan Stopwatch Co, Models 204 &

208)  Large Dial 1 division = 0.01 min, 100 divisions = 1.0

min  Small Dial 30 divisions = 1.0 min  Best for continuous time study method

o Digital Stopwatch (Accusplit AX 725)  0.01 sec divisions  typical accuracy of +/- 0.002%  continuous or snapback time study methods

• Time study board (clipboard with various features/add-ons) • Time study forms (many exist – use provided form) • Calculator • Hand-held PC/Tablet/PDA with time study software (optional, many

exist) • Video recorder (optional) • Metronome (optional, many phone apps exist)

Procedure (items to be annotated in your lab log/notebook) 1. Understanding performance Rating (Metronome Use)

Standard pace can be defined as the effective rate of performance of a conscientious, self-paced, qualified employee when working neither fast nor slow and giving due consideration to physical, mental or visual requirements of the specific job. The instructor (or operator) can synchronize the work pace with the metronome so as to demonstrate a particular level of performance.

Grave is extremely slow and solemn at 20 to 40 beats per minute. Playing or listening to a song at this pace can be difficult, as the pulse of the song is literally about every two seconds.

Largo 40 - 50 bpm. Adagio 51 - 60 bpm and literally means 'at ease.' Andante 61-80 bpm is meant to be at walking pace. Moderato 81-90 bpm. Allegretto is moderately quick at 91 to 104 bpm. Allegro 105-132 bpm, is a very commonly-used tempo, partly because of its happy, quick pace and

partly because the range of BPM is so large: its range is from 105 to 132 beats per minute. Many commercials will use this tempo because it is slightly higher than the average heart rate and therefore gives a sense of excitement.

Vivace livens the pace at 132 – 167 bpm. Presto imitates a sprinter's heart at a quick 168 – 177 bpm. Prestissimo is extremely fast 178 –208 bpm.

a. In groups of 3-4 students deal cards at paces of (comment = what did the pace “feel” like):

i. 40 bpm; 1 brief comment: _________________________________________________________ ii. 60 bpm; 1 brief comment: _________________________________________________________

iii. 80 bpm; 1 brief comment: _________________________________________________________ iv. 90 bpm; 1 brief comment: _________________________________________________________ v. 104 bpm; 1 brief comment: ________________________________________________________

vi. 150 bpm; 1 brief comment: ________________________________________________________ vii. 170 bpm; 1 brief comment: ________________________________________________________

viii. 190 bpm; 1 brief comment: ________________________________________________________

b. To demonstrate various levels of performance to a group of union stewards, the time study supervisor of the Attainment Company is using the metronome while dealing card hands. Assume level of performance for 100% is 104 bpm. How many times per minute should the metronome beat to demonstrate the following levels of performance: 60 percent, 75 percent, 100 percent, 125 percent?

i. 60 percent = 0.60 × 104 beats = 62 beats/min ii. 75 percent = 0.75 × 104 beats = ___ beats/min

iii. 100 percent = ____ × ___ beats = ___ beats/min iv. 125 percent = ____ × ___ beats = ___ beats/min

c. Rate the overall study for each of the following jobs shown by the instructor via video:

i. Stamping extrusions => Level of Performance ______

ii. Stamping end couplings => Level of Performance ______ iii. Flashlight assembly => Level of Performance ______ iv. Union assembly => Level of Performance ______

**check your answers with TA/instructor before moving on.

2. Understating Time Studies

(use your textbook and other resources to answer these questions) a. Operators and their Responsibilities During a Time Study

• Select an operator who has a record of performing at standard pace or somewhat above standard pace, who is cooperative, dependable and conscientious. The operator should have a favorable attitude to the work measurement procedure and should have an open mind in connection with method improvement.

• A qualified operator is one who can achieve the established standard of performance when following the prescribed method at an average pace.

• The operator should be rated in order to adjust the time of a good operator up to the standard and the time of a poor operator down to the standard.

b. Analyst Responsibilities During a Time Study

Summarize 3 key responsibilities 1-2 sentences each: • Responsibility 1: • Responsibility 2: • Responsibility 3:

c. Supervisor and Union’s Responsibilities

Summarize 3 key responsibilities 1-2 sentences each: • Responsibility 1: • Responsibility 2: • Responsibility 3:

d. Time Study Script Write a short script and practice twice for how you will approach an operator and discuss your time study. How can you quickly convey information and develop rapport with an operator? **conduct script with instructor/TA (acting as an operator) for approval before moving on.

3. Time Study Practice Part 1 Find the observed, normal, and standard times for the following jobs shown on the website. Assume standard performance and a 10 percent allowance. a) Stamping extrusions b) Stamping end couplings c) Flashlight assembly d) Union assembly

Job | Time Observed Time Normal Time Standard time Stamping Extrusions

Stamping End Couplings

Flashlight Assembly

Union Assembly

**check your answers with TA/instructor before moving on.

4. Time Study Practice Part 2 Use the flashlight video to complete the following tasks. Use the Therblig Handout to assist you. The following forms need to be completed:

a. CTD Risk Index Analysis – assume a grip force of 15% MVC b. Two-Hand Process Chart (might need one or two iterations to establish) c. Therbligs Analysis Checklist (to guide establishment of method) d. Fundamental motions used for flashlight assembly e. Time Study Observation Form (due this last, once your method is established) – 3 cycles,

assume 110% overall performance rating, and 10% allowance.

Technical Summary

• Attainment Company has contracted your firm to complete the following tasks and to submit a formatted 2-3 page executive summary of your results combining your interpretations and results from the flashlight assembly video from lab 2 (flow process, etc) to your analysis in Lab 5.

a. Focus your discussion primarily on the current analyses within lab 5 but do not discount what you learned about the flashlight assembly in lab 2 to extend and enrich your discussion particularly with respect to CTDs.

b. Discuss direct time study method. c. Discuss performance rating method did you use the speed method? Was this adequate? d. Discuss fixed allowance of 10% - adequate or not adequate? What would you modify for the

allowance? e. What did you learn including challenges/difficulties, best practices, how you will conduct your

next study differently. f. Propose how will you conduct the next analyses of the flashlight using predetermined time

systems. g. Attach additional forms/documentation (you can use DesignTools!) to your summary. h. 5 external references must be included and properly cited. i. No lab log/notebook pages required.