I work for an injection moulding company and most of our products come from multi-cavity tools. One tool produces at least two different items. In our system, both items have separate numbers (separate item cards). When I try to plan production using a planning worksheet, both items from one tool are planned one after the other, not simultaneously. Is there any way to configure Navision to use the same machine to produce multiple items in the same time?
Could you explain how you have this setup? Is tools considered a machine center or work center? also, are you getting multiple items out of 1 production order? Are you using item families at all?
Thank you for reply.
We are 2nd tier supplier, and we have low volume production rate. In our system is over 400 items and we run them in 9 presses with different tonnage. Tool changes happen few times a day on most of the presses. Majority of the tools can run only in one press, only few have backup press. We would like to start planning through Navision as we have more and more tools and our production planner works with excel spreadsheet and struggle to correctly accommodate resources.
For now, I am testing production planning possibilities in Navision (MPS/MRP). I’ve tried many different setups for machine centres and work centres, and all end up with the items being planned one after the other which is not right as they come from the same tool, but Navision doesn’t know that, and I don’t know if there is any way to change it.
I know that I can create production orders using item families, but I cannot plan them using planning worksheet. As far as I can see Planning Worksheet gives me only an option to plan items/SKU.
We would like to set up Navision in the way where when I calculate regenerative plan (in planning worksheet) system tells me when I should put each tool/item in the press to have the parts ready before the due date. Problem is that we may not have enough capacity on the presses and that’s why I have to add some machine centres/work centres to ‘capacity constrained resources’. Without this system ask me to put all parts which are due in the same day (even if they come form different tools) in the same press simultaneously.
Having additional outputs on production orders (sometimes refereed to as by-products or reclaimed material) is a common requirement. It could be scrap that should go back into inventory for further processing (melting it down, regrinding it, etc…) or it could be multiple products that are produced at the same time in a process. This can basically be handled in two ways in Dynamics NAV:
In both ways you need to consider both the operational aspect and the inventory costs aspect. Option #1 is easier from an operational point of view since it allows defaulting an item in the Production BOM with a negative quantity and you can back flush it based on the output or have users enter the quantity that goes back into inventory manually. If the additional output should have an inventory value then the better option from an inventory cost aspect is #2 since with this option the additional output can have both Routing and Components that forwards the costs (option #1 is similar to making a positive adjustment from an costing perspective, which should be avoided). The downside with option #2 is that a user manually needs to enter the additional output on the production order.
I can tell you there are Addon's that have work well for injection molding for this like:
I would look at the addon, which will meet your requirements.