People always advocated lean manufacturing, lean production, but many people wonder can you do?
Lean can you do?
I use two instances of manufacturing cycle time to analyze lean production can do.
Example 1
If company executives received a 6000 order information of commodities, the average daily production capacity of 600, a 12-step rhythm Similarly, no inter-process in crafts, manufacturing cycle time of three days, I would like to ask, 12 days centralization We can make all manufacturing orders information?
The answer: no.
Why-- because the manufacturing cycle time determines, first a commodity run thorough steps must be three days behind the production capacity will be in accordance with the output rate of 600 a day. In other words only guaranteed within 7 days 12 * 600 = 4000. Manufacturing cycle time to give you a first order information significantly delay, the time delay key is manufacturing cycle time, production rhythm, the total number of requirements.
Example 2
If the 12 steps, each of the intermediate process to save enough 12 large quantities after the craft moves to the next step (liquidity mass), and the manufacturing this product must be 1 minute (manufacturing rhythm), Comparative no middle in crafts continuous flow, how the cycle time change?
I divided into two kinds, mutatis mutandis, to the situation:
① Not Crafts continuous production, the first step of a product 12 must be completed 12 minutes later the remaining product in accordance with the rhythm of one minute duration yield.
② a step 10 between the members when the article, the first product needs to finish the step 10 1 (production time) +10 (WIP wait time) + 1 + 10 + 1 + 10 + 1 + 10 + 1 + 10 + 1 + 10 + 1 + 10 + 1 + 10 + 1 + 10 + 1 = 100 minutes. After 1 minute, the remaining product in accordance with a continuous output of beats.
In other words, when there is an intermediate process in the middle of the craft, and at 10 is then large quantities of cash flow, production cycle time is 10 minutes, changed to 100 minutes, and 10 times before. The greater cash flow in large quantities, the longer period of time. (In line with the vast majority of company status)
About two orders, nor harm the progress of the abnormal production of all kinds appear.
According about two simple examples can see, manufacturing cycle time to your order information delivery times lengthened again and the middle of large quantities of unlimited increases in manufacturing cycle time crafts and cash flow, continuing harm your delivery ability to work.
Lean Production Solution:
1) Under the program, freight logistics, work improvement, remove blocking elements to ensure rapid mobility.
2) lifting equipment rational layout, process of rectifiers, try to clear the cash flow process.
3) improve production planning, the use of balanced technical line, create a module production lines, etc., cleared the middle of the crafts.
4) improve the process, merged process, reducing manufacturing cycle time immediately.
5) improve the fixture and reduce cash flow in large quantities, take Jane reduce manufacturing cycle time.
6) for each process, particularly in the short board improved process, reduce tact time to enhance the productivity.
7) improving the equipment is abnormal, perform a quick changeover, standardize and reduce the harm abnormal time.
8) improve production management, production organization and coordination to improve the ability to create, to create a problem-solving ability to work quickly and reduce the hazards elements.
According to a series of improved posture, together reduce cycle time, improve product delivery to work, as a reasonable increase productivity, improve the ability to spot management, control costs, and reduce all kinds of abnormal and so on.
I want, that is to say a strong unique Lean Production.