In order to make sure that all our Customer Technical Drawings are kept up-to-date with any changes to the Production Drawings, our internal drawing numbering system is identical to the part number. This means all our Technical Drawings are multi-sheet formats – the first pages are for internal Harwin use, and the last pages are for customer reference.
If you see a drawing that says Sheet 2 of 2, then Sheet 1 is the internal Production Drawing. If the Customer Technical Drawing consists of Sheets 3 and 4, then the internal Production Drawing is sheets 1 and 2.
We keep internal Production Drawings and Customer Technical Drawings as separate sheets of the same drawing, so that each has the data relevant to the purpose:
- An internal Production drawing may only have the list of piece parts required for assembly, one dimension to control that assembly, and the relevant work procedure or machine references – none of which would be helpful or recognizable to you, the customer.
- On the Customer Technical Drawing, we can have all the dimensions relevant to the shape of the final assembly, notes relating to finish and specifications – none of which would be helpful to our production. It would make it unclear to the production staff what information would be relevant, if it was all on the same sheet.
By keeping all these sheets under the same “drawing number”, we ensure that any changes to the Production Drawing Sheets will also be reflected on the Customer Information Sheets.
If you wish to confirm any of this information with us, please use the Contact form to talk to our Technical Teams.
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