My note for my future dumb-dumb self when I get amnesia Takt time = time you need to complete customer demand Takt time = [Working hour - non working hour] : Customer demand Cycle time = time you need to produce 1 product Cycle time = {[value added activity (VA) + non value added activity (NVA) + necessary non value added activity (NNVA)] - downtime } : production capacity Lead time = order completed - order received or process ended - process started Lead time = value added activity (VA) + non value added activity (NVA) + necessary non value added activity (NNVA) In real life you need to consider allowance for the worker, and it's called standard time. Takt time is the maximum limit for cycle time When cycle time > takt time, then it's too slow (bottleneck) and need some manipulation/fixing in the production line. 😢 👎 When cycle time = takt time, then it's a meh. 😕 Be careful when workers slack it will pass the time limit. 😢 When cycle time < takt time, then the process is done too fast. 😊 👍
Can you tell me if I might be able to edit/use this video? No offense, but I would like to cut it down and fast forward through some parts - it is very useful but for my purpose/intention I would like a short version (I don't plan on monetizing, and I would provide you with the result if you would like to do so). Please let me know if this would be possible. Thanks
If it is really custom, it can be tremendously difficult to get a good sense of pace. Ideally, over time, you can identify trends and work to set known high points, low points, but some things are really unique. Instead of trying to get a pace for a month, you might be able to look at 'worst case scenarios' on how many would be needed and try to get a sense from that. Sorry, no great answers from me, at least...
[Hope to get reply] Great video! Why when calculate the takt time use 7.5hours and not putting 3 operativers into account? For a bigger assembly company shall we calculate available time by considering of head count or not?
Great question. Takt time is calculated as the demand from your company for your customer. So, how often does the company need to produce one item for the customer. You may be looking for the planned cycle time. If you have 3 assembly stations producing for the customer, you may want to calculate the planned cycle time for each to meet your customer's demand (takt). So, in that case, you might calculate takt x 3 to understand the demand on each assembly station. Further, you might want to build in a safety margin for change overs, or things of that nature, so you run a little faster than the demand. That would end up being your planned cycle time at the assembly station level.
Why didn`t you add in the video about defects?? waste!!!!! the operators not being consistant with there process??? especially when sticking the circle to a piece of paper!!!!! here, there, everywhere!!!!!! : ( under pressure to meet demand?? quality suffers!!! in the TIMWOOD meaning, D for defects!!! customer returns.......................................... a bit of extra time should be added for the process!! after all, we are not robots : )
Absolutely waste plays a big part in setting your planned cycle time. For the purposes of understanding the theoretical takt, cycle, and lead times, waste makes it a little more murky. Waste is what gets in your way of achieving your desired states. Thus, understanding your theoretical demand verses your actual helps you see what you need to work on to achieve your goals.
Great way of explaining how takt/cycle/lead time works. As a special bonus how QUALITY is forgotten so production metrics are met (Did you see all the scrap that was generated?). I think it is always good to add some extra time to ensure quality. This way PRODUCTION is not pressured to meet takt/cycle/lead metrics and forget about QUALITY. I am a software engineer, and I think this is an excellent video don't get me wrong. But Quality should also not be forgotten, please add some extra time to meet customer demands and quality.
Bang on the money Hector Andrade! the cutting, and especially the glueing process! stuck here there and everywhere!! not in a specified place! customer returns!!!!!! in a TIM WOOD enviroment? D for defects!!!...............
Nice simulations, how can we consider for effeciency losses in cycle time...?? Because a process will never run at same cycle time and or 100% effeciency..
