Drawing-based CNC parts · Prototype to repeat productionwendy@honmetmfg.comWhatsApp +86 188 2450 6096
Dimensional inspection for CNC machined parts
Quality & inspection

CNC Machining Quality Control and Inspection

Measurement methods and inspection records are planned around the dimensions that control fit, alignment, motion and acceptance.

Measurement capability

Different features require different tools

Inspection method is selected according to geometry, tolerance, accessibility and the evidence agreed at quotation.

2D measuring instrument
2D measurementProfiles, hole positions and planar dimensions
Height gauge
Height measurementSteps, heights and datum-based checks
Concentricity tester
Concentricity & runoutRelated diameters and rotational features
Surface roughness tester
Surface roughnessFunctional and cleanable surface requirements
Hardness tester
Hardness testingMaterial condition and heat-treatment verification
Profile projector
Profile inspectionContours, angles and small feature geometry
Evidence options

Agree the records before production

Not every order needs the same documentation. The appropriate level should be stated in the RFQ or purchase order.

First-article result

Useful when a new drawing, revision or process route needs approval before the remaining quantity.

Critical-dimension report

Records the features that affect fit, alignment, motion, sealing or customer acceptance.

Material documentation

Material certificate, hardness or related evidence can be requested when relevant.

Visual & packing standard

Appearance limits, protective packing, labels and kit requirements can be agreed with the order.

Inspection flow

Four checkpoints instead of one final check

01Drawing reviewIdentify critical features and unclear tolerances.
02First-piece checkConfirm setup and measurement method.
03In-process controlMonitor the features most likely to drift.
04Final releaseComplete agreed checks and packing verification.

Tell us what evidence your approval process needs.

Mark critical dimensions on the drawing and state whether a first article, dimensional report or material documentation is required.

Send Quality Requirements →
Technical Reference

Define inspection requirements in the RFQ

Use the RFQ guide to identify critical dimensions, reports and material records before quotation. The tolerance guide explains how fits, datums and non-critical dimensions should be separated before the inspection plan is agreed.

Define inspection requirements in the RFQ → Read the CNC machining tolerance guide →