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Cards are a method of production control, making it easier to track and plan throughout the process. There are a variety of cards, the functions of which sometimes overlap depending upon the production and the preferences of the company producing it. Most of us are familiar with the idea of time cards or library slips; these are a decent analogy, but they tend to contain less detail than a job or route card. Cards do not necessarily have to be physical either.
Route cards are more like guides. They detail the sequence of events and necessary materials for a production, and are more useful for planning than for tracking. A route card does not necessarily mean a particular physical path or direction of travel; we might better describe them as "sequence" cards. They are essentially handed down from someone who has knowledge of the process to someone who is going to actually execute it.
Job cards are a means of tracking what actually takes place in the production process. The job card is created for a single production, and the work and time that goes into that production is then recorded on the card. We might consider the job card to be a demonstration of one or more steps detailed in the route card. This is then used for bookkeeping, payroll, and so forth.
Quite simply, a job card involves time to completion and a route card involves travel of a certain part.
A job card is all about timing. There are many details involved. What are the materials used? What is the time allowed so that production doesn't run over? What did the current report of inspection say? These are all things that could be found on a job card. A business will have the number of job cards that equal exactly the number of operations that are done in that business.
A job card provides the details related to the time it takes to complete the job and the material required for the job completion. It is used to allocate material cost and labor cost. In general, each operator will fill the time taken to complete an operation. Thus the total number of job cards will be equal to the number of operations performed in that particular shop or unit. Typical information available on the filled job card includes:
- part details
- operator number
- quantity to produce
- time allowed
- inspection report
- destination of the part after last operation, etc.
Route card, on the other hand, details the route a part will take during various operations in a shop. This information helps the operator in deciding the sequence of operations needed in order to get the final component. These will vary for each shop and can be provided as printed documents for routine work or can be edited printed documents (edited with a different colored ink) if small changes are required in the routine.
A job card is a card that gives the detail of a job to be performed in a production facility. It is used as a means to authorise and instruct the production people to take up the production work. The content and formats of the job card varies from company to company. But in general job cards will contain details such as:
- component or product to be produced.
- Quantities to be manufactured
- planned manufacturing schedule
- Actual manufacturing time
- Any additional instructions that may be required by the production workmen
The job card may or may not contain the details of operations to be performed at different operating stations. This information identifies how a job lot under production from work center to work center. In this way the job card traces the route to be taken by the job during the production process. A job card of this type may be called a route card.
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