11

I don't think there is any formal standard way out of this mess. The good news is that at least tracked the changes by serial number. Inventing different models after fact seems pointless because the customers won't know what models they have. From the customer view, these are all one model but vary by serial number. Document it that way. You could ...


5

One advantage for fixed length serial numbers is that it's easier to do database searches, particularly if there's a pattern in the numbers. Try writing the code to interrogate a database for variable length numbers. With leading zeros in a list of numbers the number 2 always comes before 10,11,100 and any other multiple digit number beginning with a 1. It'...


5

Tracking the various product versions by serial number is a good idea, but be careful to standardize that as well. Years ago while working for an electronics manufacturer in service and repair, I discovered two units; one was serial number 0024, the other was 00024. They had changed from a four-digit number to a five-digit one and in the process created a ...


3

There are lots of different ways to approach this problem - I've presented below one which I have seen in more than one company, and has worked well for each. The file name becomes [Project Name]-[Document Type]-[Sequential]-[Revision]-[Version]-[Optional Description] The first three are self-explanatory. Revision: This is either an Alpha (A, B, C) or ...


3

The main purpose of a ECO process is to communicate changes to team members, other departments, customer and suppliers. ECO is industry accepted process that has now been automated using various tools. All affected parties need to provide input for the system to work effectively. Many global organization require multiple levels of approvals. In one such ...


2

The formal way to avoid such situation is called configuration management. Even with such a formal process there are occasions that engineering run into such scenarios. One of the most recent is the Takata Air Bag Recall. Therefore there are plenty of examples to handle such scenarios, but one size doesn't fit all. Following are few suggestions to address ...


2

Fixed-width serial numbers are just easier to handle. It also allows you to know where the serial number is within a overall product ID string without special rules to parse the string. For example, if the serial number is expressed in hexadecimal in the string, it can contain letters A-F in addition to the digits 0-9. If the part ID string might also ...


2

Most engineering discipline are capable of defining manufacturing and test process. It is the management function to ensure the processes are followed. Generally depending on the size and structure of the organization most defining manufacturing and testing process are mostly handled by manufacturing test and process engineering teams. If a Quality ...


2

Typical ISO practice is the most recently approved and released drawing is valid. A common work around for off the shelf parts, like bolts, is to have one generic drawing number for multiple part numbers that just lists a table of dimensions for a common part. An example for your bolt: DRAWING DRW-0010: BOLT, HEX HEAD, M20 P/N LENGTH PITCH DRW-...


1

Depending on the type of spline you're defining, there are different characteristics that you'll need to identify the spline to either a machinist or to the customer who will need to design the mating part. Some of them are pretty straightforward and will be needed regardless of the type of spline, such as physical diameters (major and minor), number of ...


1

With out a cost benefit analysis it is hard to tell with method will bring the best financial value to your organization. I am assuming that the analysis suggest that using a test automation will bring the best value for your organization. Base on the current industry standard test automation will bring you the best value in almost all cases. In one of my ...


1

Have you looked at NI Test Stand? When I worked in the medical device industry that's what was used at every step along the way. The devices weren't built completely and then tested, but tested after each stage of production with a final programming and validation at the end. The devices were serialized by a ROM, which was tied to an engraved s/n on the ...


1

Smaller organizations naturally have simpler ECO processors. In one such organization with about 500 employees, the change owner submitted the change to the change management board. The board consisted of VP manufacturing Engineering, VP of Research and Development, VP of Quality, representative of other affected departments. These included engineer, ...


Only top voted, non community-wiki answers of a minimum length are eligible