Sunday, October 4, 2009

Fixing Wobble In Front Wheel Of Bike

Just In Time Part 1


traditional manufacturing system set jadwall production based on forecast demand in the foreseeable come. Though no one can predict the future with certainty, although he has a perfect understanding about the past and has a sharp instinct towards trend in the market

Production based on a prediction of the future in the traditional system has a greater risk of loss due to over production rather than production based on actual demand. Hence the idea of \u200b\u200bJust In Time munculah producing if there is demand. A production process will only produce when signaled by the next process. As a result pemborosoan can be removed in large scale, namely in the form of improved quality and lower production costs. Both companies make it more cooperative. Just In Time The main purpose is to increase profit and competitive position of companies that achieved through cost control efforts, improved quality and delivery performance improvement.


1. Understanding Just In Time

Management Just in time is a management technique first introduced by the Japanese, this management technique known with zero inventory, which means that the company has no inventory, for example, supplies of raw materials to be purchased when needed so that companies do not spend the cost of storage of raw materials and other related costs, this is one way to reduce the cost of production but for this system to work well should be supported by factors which influence supporting infrastructure such as highways, if not available that can be traversed by road transport companies it will hamper the distribution of products and raw materials in and out plant and raw material suppliers who are ready to supply the raw materials needed in ontime if not it will cause delay production time

JIT not only simply "zero inventory" system also requires efficiency, effectiveness and productivity and cooperation system in the company concerned, as to produce a number of products on time, with raw materials that will be purchased when needed and demanding the use of resources efficiently and effectively so will reduce the variable costs incurred due to production errors, so that the number of defective products to be reduced, unused raw materials will also be reduced but this would in Balance with quality products that produced a better

2. JUST IN TIME Inventory System

Just In Time is an overall operating philosophy of management whereby all resources are used to the extent required.

the JIT objective:

1. Lifting productivity

2. Reducing waste

JIT system is effort to reduce or eliminate the supply in an attempt to cut costs.

JIT Inventory System helps managers to cut costs, improve efficiency and expand output.


Four (4) fundamental aspects of JIT:

1. Eliminate all activities that do not add value to a product or service .


Manufacturing Time = Processing Time + Left inspection + Left + Left queued move

Processing Time: The time needed to convert raw materials into finished goods

inspection Time: length of time spent to ensure that the product is high bermuru

Left move: time required to move the BB or BDP from one work station to another work station.

queuing time: The length of time waiting for a product to do, moved, or shipped from the warehouse to the customer.

2. high commitment to quality

3. continuous improvement efforts

4. emphasis on simplification.

JIT Manufacturing Objectives: Produce a product only when necessary and only in the quantity demanded by customers.

4. Important measure of the reliability of the JIT system will include the factors following the effectiveness of the plant cycle;

a. Level product defect / damage

b. cycle time

c. Percentage of timely product delivery

d. Accuracy order

e. Percentage actual production as compared with the budgeted production

f. actual machine hours than planned machine hours available.

5. Key Elements of JIT

Five Key Elements for the success of JIT:

1. a limited number of suppliers

minimal inventory levels

JIT systems cut costs by reducing:

a. space required for storage of raw materials

b. amount of raw material handling

c. amount of obsolete inventory.

2. Settling Factory Layout

Flow Line: physical path to be passed by a product when moving through the manufacturing process from raw material receiving up to the delivery of finished goods.

3. Setup Reduction Time

The machine setting (setup time) is time needed to change gear, move the raw materials , and get the relevant form and move quickly to accommodate elements of the product different.

4. Integrated Quality Control (Total Quality Control)

TQC means that companies will not allow reception reception component and raw materials defective from the supplier, the BDP and the finished goods.

5. flexible workforce

6. The advantages to operate a JIT system in management

- every system that exists in the company to run more efficiently

- Factory cost less to hire the staff.

- Goods production is not necessarily at the checks, stored or duretur back.

- working paper can be more simple

- savings that have been done can be used to get a higher profit for example, by carrying out additional promotions.

7 . Weaknesses JIT

one weakness is the JIT system, the level of orders is determined by historical demand data. If demand rises from exceed average historical planning the inventory will be depleted and will affect the level of customer service. To achieve the 95% level of service companies must submit two standard deviations in safety stock.


Post a Comment