Provide both part and assembly definition
Send native 3D data where available plus readable 2D drawings with revision, material and critical dimensions. Include all variants the fixture must accept and identify which dimensions drive the finished assembly.
- STEP/STP and controlled PDF drawing
- Part numbers, revisions and variants
- Material, thickness and finish
Mark datums and variation
Identify primary, secondary and tertiary locating surfaces, critical tolerances and known incoming variation. Explain where variation may float and where the fixture must force repeatable location.
- Functional datums
- Critical-to-quality dimensions
- Expected tolerance stack and distortion
Protect clamping and process access
Show permitted clamp zones, no-clamp surfaces, weld seams, torch angles, fastener access, inspection points and load/unload direction. Include utilities and sensor needs for automated clamps.
- Clamp sequence and force sensitivity
- Robot/tool access and keep-out zones
- Manual, pneumatic or automated operation
Define interfaces and acceptance
Specify robot, table or positioner interfaces, base envelope, changeover target, wear parts and required inspection. State whether the quotation covers design only, build, trial fit, measurement report or production validation.
- Mounting pattern and utilities
- Inspection and repeatability test
- Design, fabrication and trial responsibilities
Decision checklist
Use the same inputs when comparing supplier proposals.
| Decision area | Inputs to confirm |
|---|---|
| Provide both part and assembly definition | STEP/STP and controlled PDF drawing; Part numbers, revisions and variants; Material, thickness and finish |
| Mark datums and variation | Functional datums; Critical-to-quality dimensions; Expected tolerance stack and distortion |
| Protect clamping and process access | Clamp sequence and force sensitivity; Robot/tool access and keep-out zones; Manual, pneumatic or automated operation |
| Define interfaces and acceptance | Mounting pattern and utilities; Inspection and repeatability test; Design, fabrication and trial responsibilities |
Move from research to a commercial review
Upload the part and assembly files; we will identify missing datum, clamp and access information.