Trinity Operating Procedures - TOPs

TOP-SOLID: Solid Model Creation & Analysis 

Rev: 2/27/2023

Scope: This procedure covers the construction and inspection of computer-aided design (CAD) solid models. Typically produced in Pro/Engineer.

Procedure:

STEP	WHO	WHEN	INFO TO USE	WHAT TO DO
FOR ANY MODEL CREATION AND INSPECTIONS OTHER THAN DIES - Steps 1 & 2
1	Forging Engineer or Machining Department Programmer	3D model creation for part, gage, die sets, etc. is required	Print, customer supplied model, verbal instructions, sample part or other source documents provided	Begin 3D Model construction. When a print exists, mark, in green the dimensions that are achievable; Mark, in red, the dimensions that are not achievable; Dimensions or notes that present questions should be marked in blue and note on the print. NOTE: red and blue markups MUST be properly addressed. Compare the model to the customer supplied model or other source documents provided. Forward to another Forging Engineer for inspection and approval once model construction is complete; place a copy of the model into Pro/Engineer parts directory Be sure 3D model is properly identified and named correctly to align with M2M.
2	Forging Engineer or Machining Department Programmer (other than the one in Step 1)	Once model is created and passed on for inspection	Print; customer supplied model, verbal instructions, sample part or other source documents provided and newly constructed 3D Model	Inspect the 3D Model. Strike through the marked up green dimensions once it is verified that they match; the dimensions marked in red indicating not achievable should be validated and verified that not possible; dimensions with questions in blue should be validated. NOTE: red and blue markup issues MUST be signed off once addressed. Inspect the model so that critical features of the model compare to the last cast, pattern, customer supplied model or other source documents provided. Validate that model is properly identified and named to correctly align with M2M. If approved, note approval on 3D Die Design Checksheet and go to Step 5. Otherwise go back to Step 1
FOR DIE MODEL CREATION AND INSPECTIONS - Steps 3, 4 & 5
3	Forging Engineer or Machining Department Programmer	Die and/or trimmer tooling model creation is required	Print, customer supplied model, scanned image, verbal or written instructions or own knowledge	Construct die 3D Model and/or trimmer tooling 3D Models. Fill in the 3D Die Design Checksheet with information for all impressions and tooling. Forward to another Forging Engineer for inspection
4	Forging Engineer	If directed by VP-Quality & Engineering, after new die and/or trim tooling models completed and before approval	Supplied die models, 3D Die Design Checksheet, info from discussion	Using forging simulation software (e.g., DEFORM), simulate forge process until satisfied with results; forward to another Forging Engineer for forging simulation, die and trim tooling models inspection and approval
5	Forging Engineer or Machining Department Programmer (other than the one in Step 3 or 4)	Once forging simulation (if any), die model and trim tooling models are created and passed on for inspection	Print, customer supplied model, scanned image, and newly constructed die and/or trim 3D Models, 3D Die Design Checksheet, forging simulation (if any)	Review and approve any forging simulation then inspect the die and/or trim tooling models. Use all tools including own knowledge and experience and 3D Die Design Checksheet; If approved note on 3D Die Design Checksheet, if not approved go back to Step 3
6	Forging Engineer or Machining Department Programmer (originator)	Once die model approved	Print, customer supplied model, scanned image, and newly constructed die model and 3D Die Design Checksheet	Place a copy of the 3D Die Design Checksheet in Pro/Engineer parts directory

Revision history: