Geometry
Bases, dimensional chains and processing availability.
ENGINEERING CHECK
Engineering verification of initial data
Drawing, fit, material, heat treatment and control before calculation.
Drawingbases and tolerances
DFMmanufacturing route
Controlmeasurable criteria
ENGINEERING CHECK
It is better to close technical issues before making an offer.
Checking the input data reveals inconsistencies between size, material, heat treatment and available technology. Open issues are recorded before settlement so that price and timing are not based on unknown assumptions.
WHAT TO CHECK
What does the engineer check?
Features that affect function and route are given priority.
Material
Compatible with required properties.
Process
Allowances, deformation and sequence of operations.
Acceptance
Controllability of special characteristics.
HOW THE WORK IS CONSTRUCTED
Questions turn into fixed solutions
The answers are included in the agreed drawing, table or technical application. The document version is used by production and acceptance.
RESULT
Job suitable for production and control
The share of hidden assumptions is reduced, and the boundaries of responsibility become clearer to both parties.
- DataConfirmed parameters.
- ExceptionsOpen questions.
- DocumentAgreed version.
BEFORE AGREEMENT
Boundaries of engineering verification before calculation
Engineering verification links the part drawing with the interface and manufacturing sequence. At this stage, unknown parameters, critical dimensions and acceptance criteria are recorded. The test result does not replace the approved design documentation: changes in material, fit or heat treatment are agreed upon before the sample is launched.
Original version
Number and revision of the drawing, units of measurement and tolerances.
Work node
Mating parts, movement, load, contamination and lubrication.
Route
Preparation, allowances, processing, hardening and finishing.
Confirmation
Sample, measurement methods and control of serial batch.
NEXT STEP
Submit the drawing for initial DFM check
Note critical dimensions, material, processing and expected volume.