CNC milling prismatic parts: faces, bores and pockets
Mounting faces provide the references for bores, pockets and openings. These datums and the accessible holding orientations determine the milling route.
Bores and pockets located from mounting faces
Locating faces provide the references for the bores and pockets. We review the model to establish the holding orientations and any repositioning included in the quote.
Identify the locating faces
The drawing locates bores and pockets from the mounting datums, with sizes and fits specified. We use these relationships, stock details and clamping restrictions to plan the setup.
Plan the accessible faces
Each orientation must leave a clear cutter approach. We review repositioning against the drawing’s flatness, pocket depths and mating surfaces, including dimensions affected by treatment.
Check the part family
Each part number has its own drawing revision and quantity. Its inspection plan covers critical dimensions and positions, sampling and report format.
Checking bores and mounting faces across setups
Critical bores and hole patterns are checked relative to the mounting faces and feature positions on the drawing. We agree the inspection method, sampling plan and report format before production.
Bores and hole patterns
Define critical dimensions and common datums for bores and hole patterns, with the positional measurement method and records.
Faces and pockets
Define locating faces, pocket depths and mounting interfaces. Agree flatness and dimensional checks.
Several orientations
Define feature relationships across setups, with datum-transfer checks and a sampling plan.
For your part, we agree the measurement method, condition after finishing, support, sampling and report format before production.
Discuss a similar component
- Controlled drawing and model revision
- Mounting datums, bores and hole patterns
- Pocket depths and feature relationships
- Material, finish and post-treatment dimensions
- Part numbers, quantities and sampling plan
- Inspection method, reports and delivery destination
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