AI for spring manufacturers, tested on prints you already quoted and lots you already shipped.

Two federal codes for one shop floor. The 2022 NAICS definitions put spring manufacturing, 332613, at making springs from purchased wire, strip or rod, and put fabricated wire products in 332618, springs excepted. A shop coiling compression springs on one machine and forming wire clips on the next belongs to both, so the quote requests on its desk don't share a shape. They do share one thing: your team already answered every one of them, and those closed files are the key a draft gets graded against.

Your trade has its own library. The Spring Manufacturers Institute's regular members are North American companies making precision mechanical springs for general sale, and it lists a Handbook of Spring Design and an Encyclopedia of Spring Design among what it offers them. The engineer sending you a print often works outside that library, which is why one sheet states a load at a length while the next gives a rate and a diameter and stops. Reading those gaps is the first job here.

The published limits stop short of your product line. EN 15800, the European quality specification for cold coiled compression springs, is bounded: wire from 0.07 to 16 mm, mean coil diameter from 0.63 to 200 mm, unloaded length up to 630 mm and a spring index from 4 to 20. Wire forms and flat springs sit outside it. Machinery's Handbook bases its flat spring formulas on standard beam formulas where deflection is small, and it says results for spiral, clock and motor springs cannot be calculated with precise accuracy. So a draft has to know which family it is reading, and the design stays with your people.

A quality package asks what a failure investigation asks. The Institute of Spring Technology calls background information the foundation of every failure analysis: the spring's design, its material certification, grinding, heat treatment, coatings and shot peening, what it was exposed to, and whether it broke during prestressing, scragging or installation. Much of that same record is what a quality manager gathers before signing for a lot. Every package you've shipped is already assembled and on file, so your reviewer has something concrete to hold each draft against.

Accounts ask in different ways. Automotive, appliance and industrial customers don't want the same paper at the same time, and a print can carry a requirement the PO never repeats. Your reviewer picks requests and lots from each kind of account, so the test runs on your real mix.

One limit covers both jobs. The proof of concept never touches your shop system, a coiling machine, a live quote or a live certificate. It never designs a spring, prices a job, judges a reading or signs a certificate. An estimator approves every quote and a quality manager signs every package. Defense and aerospace work stays out, and the standards named here are for context, not legal or engineering advice.