TOY PIG Assembly

By group 5:

Angelica AgacitaFruilene Isabel PanesLanmark MabasaIan Nilo Andales

Objectives :

At the end of the activity the students are expected to:

• Apply the concept of hand and motion economy as well as the use of therbligs in the study

• Analyze every step in the toy pig assembly process

• Make an effective data sheet• Make use of predetermine time standard

worker

toy pig

Apparatus : body

nose

face

feet

Procedure:• Prepare the parts of toy pig to be assembled• Assign a worker to perform the experiment (the

toy pig assembly)• Create a workstation that is the best workstation

in assembling the toy pig• Make a data sheet containing left and right hand

chart, therbligs, including the descriptions of every motion of the worker and standard time of assembly by using PTSS

• After creating the best workstation and the data sheet, perform now the experiment (the toy pig assembly)

• While the worker performs, make an observation ,

do the time study and record the motions of the

worker.

• Fill the data sheet with the information gathered.

• Compute the units that a worker can finish on a

day(8hrs).

• Publish the results.

What is Predetermined Time Standard?

Theoretical Background

• MTM (Mynard, Stegemerten & Schwab, 1948) gives time values for the

fundamental motions of reach, move, turn, grasp, position, disengage

and release. The author defined MTM as “a procedure which analyzes

any manual operation or method into the basic motion required to

perform it, and assigns to each motion a pre-determined time standard

which is determined by the nature of the motion and the conditions

under which it is made.”

• Provides detailed information of the work elements (Groover,2007)

Theoretical Background

• Experience has proved that companies that have developed sound

standards based on measurement are more likely to meet scheduled

delivery dates for their products.

• The use of PTS allows the introduction of up – to – date production

control procedure, with the resulting advantage to customers who get

their merchandise when they want and need it.

• Also, it tends to make any company more time – and – cost conscious;

this usually results in lower selling prices.(Freivalds, et.al)

Theoretical background

• In measuring the time standard, you must take the step-by-step procedure.

1. Select the job to study2. Collect information about the job 3. Divide the job into elements4. Do the actual time study5. Extend the time study6. Determine the number of cycles to be timed7. Rate, level and normalize the operator’s performance8. Apply allowances9. Check for logic10. Publish the time standard

Proposal

Chair Table acrylic bin

WORKSTATION

DESIGN

Proposal

WRONG SITTING FORMATION OF THE BODY IN DOING THE WORK

CORRECT SITTING FORMATION OF THE BODY IN DOING THE WORK

LEFTTHERBLIGS

DISTANCES TMU THER

BLIGSRIGHT

Reach for the body of the toy pig

TE 16.3 11.4 TEReach for the body of the toy pig

Grasp the body of the toy pig G 16.3 2.0 G Grasp the body of the toy pig

Transport the body of the toy pig to the 1st jig

TL 10 13.5 TLTransport the body of the toy pig to the 1st jig

Position the body of the toy pig to the 1st jig

P 10 16.2 PPosition the body of the toy pig to the 1st jig

Reach for the face of the toy pig

TE 17.9 12.3 TEReach for the face of the toy pig

Grasp the face of the toy pig G 17.9 2.0 G Grasp the face of the toy pig

Transport the face of the toy pig to the body

TL 10 13.5 TLTransport the face of the toy pig to the body

LEFTTHERBLIGS

DISTANCES TMU THER

BLIGSRIGHT

Position the face of the toy pig to the body

P 10 16.2 PPosition the face of the toy pig to the body

Reach for the nose of the toy pig

TE 20.9 13.1 TEReach for the nose of the toy pig

Grasp the nose of the toy pig G 20.9 2.0 G Grasp the nose of the toy pig

Transport the nose of the toy pig to the face

TL 10 13.5 TLTransport the nose of the toy pig to the face

Position the nose of the toy pig to the face

P 10 16.2 PPosition the nose of the toy pig to the face

Grasp the assembled body, face and nose of the toy pig

G 10 2.0 GGrasp the assembled body, face and nose of the toy pig

Transport the assembled body,face and nose of the toy pig to the 2nd jig.

TL 12 15.2 TLTransport the assembled body,face and nose of the toy pig to the 2nd jig.

LEFTTHERBLIGS

DISTANCES TMU THER

BLIGSRIGHT

Place the assembled body, face and nose of the toy pig to the 2nd jig

P 1216.2

PPlace the assembled body, face and nose of the toy pig to the 2nd jig

Reach for the 1st feet of the 1st toy pig

TE 26.315.8

TEReach for the 1st feet of the 2nd toy pig

Grasp the 1st feet of the 1st toy pig

G 26.3 2.0 GGrasp the 1st feet of the 2nd toy pig

Transport the 1st feet of the 1st toy pig to the assembled body, face, and nose

TL 1215.2

TLTransport the 1st feet of the 2nd toy pig to the assembled body, face, and nose

 Position the 1st feet to the assembled body, face, and nose

 P 1216.2

P Position the 1st feet to the assembled body, face, and nose

Reach for the 2nd feet of the toy pig

TE 26.315.8

TEReach for the 2nd feet of the toy pig

Grasp the 2nd feet of the1st toy pig

G 26.3 2.0 GGrasp the 2nd feet of the 2nd toy pig

LEFTTHERBLIGS

DISTANCES TMU THER

BLIGSRIGHT

Transport the 2nd feet of the toy pig to the assembled body, face, and nose

TL 1215.2

TLTransport the 2nd feet of the toy pig to the assembled body, face, and nose

 Position the 2nd feet to the assembled body, face, and nose

 P 1216.2

P

 Position the 2nd feet to the assembled body, face, and nose

Reach for the 3rd feet of the 1st toy pig

TE 26.315.8

TEReach for the 3rd feet of the 1st toy pig

Grasp the 3rd feet of the 1st toy pig

G 26.3 2.0 GGrasp the 3rd feet of the 1st toy pig

Transport the 3rd feet of the toy pig to the assembled body, face, and nose

TL 1215.2

TLTransport the 3rd feet of the toy pig to the assembled body, face, and nose

 Position the 3rd feet to the assembled body, face, and nose

 P 1216.2

P

 Position the 3rd feet to the assembled body, face, and nose

LEFTTHERBLIGS

DISTANCES TMU THER

BLIGSRIGHT

Reach for the 4th feet of the 1st toy pig

TE 26.315.8

TEReach for the 4th feet of the 1st toy pig

Grasp the 4th feet of the 1st toy pig

G 26.3 2.0 GGrasp the 4th feet of the 1st toy pig

Transport the 4th feet of the toy pig to the assembled body, face, and nose

TL 1215.2

TLTransport the 4th feet of the toy pig to the assembled body, face, and nose

 Position the 4th feet to the assembled body, face, and nose

P 1216.2

P Position the 4th feet to the assembled body, face, and nose

Grasp the finished assembled toy pig

G 12 2.0 GGrasp the finished assembled toy pig

 Transport the finished assembled toy pig to the finished assembly

 TL 29.129.0

 TL

 Transport the finished assembled toy pig to the finished assembly

Release the finished assembled toy pig to the finished assembly

RL 29.1 2.0 RLRelease the finished assembled toy pig to the finished assembly

THERBLIGS LEFT HAND RIGHT HAND

TE 5 5

G 7 7

TL 7 7

A 4 4

TOTAL 23 23

Summary:

Total TMU COMPUTATION

312.9 312.9 * 0.0006 min = 0.19 min = 11.4 sec

13.3

Eye Travel Time = 15.2 * (T / D) TMU

= 15.2 * (29.1 / 33.35)

PTS = 312.9 + 13.3 = 326.2

= 326.2 * 0.0006 min = 0.20 min = 12 sec

Summary:

Analysis: STRENGHTS

• Principle 1: The two hands should begin as well as complete their motions at the same time.

• Principle 2: The two hand should not be idle at the same time except during rest periods.

Both hands were able to balance the motions where it also able to complete the assembly of the two toy pigs

• PRINCIPLE 3: Motion of the arms should be made

in opposite and symmetrical directions and

should be made simultaneously.

The two hands were able to complete the task

and its use were made effectively. It can be

seen from the simo chart that the hands were

functioning and the task are balanced.

• PRINCIPLE 8: Work should be arranged to permit easy

and natural rhythm wherever possible.

• PRINCIPLE 9: Eye fixations should be as few and as close

together as possible.

The work of the worker permits easy and natural rhythm

because the arrangement of the parts were made

according to the distribution of the task for the hands. The

parts were located in away that the operator can reach

without stretching or causing so much effort in assembling

the toy pig. With these the eye fixations are made few.

• Principle 10: There should be a definite and fixed place for all tools and materials.

• Principle 11: Tool, materials, and controls should be located close to the point of use.

The materials used in assembling the toy ship are readily available for the worker’s reach. The distances were made according to the anthropometric measurements or capability of the operator to reach and work.

• Principle 16: The height of the workplace and the

chair should preferably be arranged so that the

alternate sitting and standing are easily possible.

The chair and the working table were

provided in a way that the worker is

comfortable to use it. The height does not

permit the operator to work in a restricted

motions.

• Principle 18: The hands should relieved of all work that can be done more advantageously by a jig, a fixture, or a foot - operated device.

• The jigs were provided not only to make the operator work effectively but as well to finish the two toy pigs at the same time. As well, the jigs would not affect the quality of the output.

COST-BENEFIT ANALYSIS

 

TOOLS 

 

COST 

BENEFIT

 JIG 1

 P 50.00 

 The operator will no longer hold the

parts of the toy pig.

*For the purchase, the management may contact a furniture maker and ask to make

the designed jigs with a fixed cost of P 50.00 each. 

 JIG 2

 

 P 50.00

  

chair

  

P 1,229

 The operator will have a chance to take

a rest after long hours of standing

 TABLE

 

 P 351.00 

 The working table will be utilized for the assembly of the toy pigs

 ACRYLIC BIN (P 49/ pc.)

 

 P 441.00 for 9 pcs.

 The acrylic bins will be made visible so that searching will be avoided

TOTAL 

 P 2, 121.00

 

Conclusion

Predetermined time standard system is used to establish time

standard in completing a certain job or any given process.

Advantages includes no disruption of the operation during the study

and the standards can be established. They are not too difficult to

apply and can be less time consuming than other methods when

time standards are determined. They are particularly useful for very

short repetitive time cycles such as assembly work in the toy

industry. Establishing time standard may help the company identify

the part of assembly that needs improvement. This will also help the

company maximize the time of each worker working on a certain

assembly thus improving the productivity that will increase the

profit of the company.