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HEIJUNKAAUTOMOTIVE SYSTEMS INGEENIERING
INSTITUTO POLITCNICO NACIONALESCUELA SUPERIOR DE INGENIERA MECNICA Y
ELCTRICAUNIDAD AZCAPOTZALCO
SUBJECT: TPICOS SELECTOS DE INGENIERA
TEACHER: JOS ALBERTO LPEZ ISLAS
PRESENTERS:
GONZLEZ ARCEO RAMN SARMIENTO HERRERA HERIBERTO SOBERANES GARCA EDREI SOLS PUEBLA SERGIO GUSTAVO YANIZ MRQUEZ ALEXIS
TEAM 4
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TOYOTAS HOUSE
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HEIJUNKA DEFINITON
Leveling customer demand through the volume of production in
a uniform period of time
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HEI: PlaneJUN: LevelKA: Performance
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GENERAL OBJETIVE
Remove Mudas bystandardization ofwork.
Reduce inventories.
SPECIFIC OBJETIVES
Load balance production lines, having an order ofmanufacture of the products.
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HEIJUNKA CHARACTERISTICS
It can be used in conjunction with other tools of LeanManufacturing.
Brings stability in the manufacturing process
Product Leveling Production Leveling
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HEIJUNKA BOX
Also called leveling box, is a physical tool used to level the volumeand variety of production for a certain period of time (pitch)using kanban cards.
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Important Concepts
Takt time
It refers to the rate of production of thecompany based on customer demand.
Pitch:
Refers to the number of pieces per unit timebased on takt time
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Example
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Products A01 B02 C03 D04 TOTAL
Daily Requirement 300 240 180 60 780
Quantity Per Pack 15 15 15 15 60
# of kanbans 20 16 12 4 52
Production time: 8hrs x 60 min = 480 min2 breakfast 15 min= -30 minRest 10 min= -10 min
---------------440 min
440 min x 60 x2 = 52,800 seconds
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Takt time= 52.800 seconds / 780 units =67.6 seconds
Pitch= 67.6 sec. x 15 units = 1,014 seconds or 16.9 min.
So:
The leveling of the production is to be achieved as follows:
Product Quantity
A01 20
B02 16
C03 12
D04 4
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Representation of a Heinjunka box
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HEIJUNKA BOX CHARACTERISTICS
One row for each product
A column for each pitch A single kanban card in each box
Levels of lines in order
Check the pitch
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CONCLUTIONS
Calcular takt time.
Calcular el pitch decada producto.
Establecer el ritmo deproduccin
Crear la caja heijunka
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REFERENCIAS
Manual de Lean Manufacturing gua bsica 2da.Edicin. Autores: Alberto Villaseor Contreras,Edber Galindo Cota, editorial LIMUSA. Pginasconsultadas 93 101
LEAN MANUFACTURING pginas consultadas137-139
Creating your lean future state, how to move
from seeing to doing chapter 5 load leveling, orheijunka. Autores: Tom Louyster, Don Tapping,pginas consultadas: 105 - 115
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