CNC İşleme Tasarım Kılavuzu
CNC Machining Design Guide for Custom Parts
Review practical DFM points for CNC machined parts before quotation, including tolerance planning, wall thickness, hole design, thread features, material selection, surface finish impact, and inspection requirements.
Design review before machining
What This CNC Design Guide Helps You Prepare
A clear drawing and manufacturable design help reduce quotation uncertainty, machining risk, inspection questions, and lead time delays. JADE-CNC reviews part geometry, malzeme kalitesi, kritik boyutlar, tolerans bölgeleri, yüzey kalitesi, thread callouts, hole depths, veri referansları, and inspection requirements before production planning.
This guide does not replace project-specific engineering review. It helps sourcing teams and engineers prepare the information JADE-CNC commonly checks during RFQ and DFM review for custom CNC machined parts.
DFM review note
For faster quotation, provide STEP / IGES / X_T files plus 2D PDF drawings when tolerances, Konular, GD&T, yüzey pürüzlülüğü, bitiş gereksinimleri, or inspection records are important.
Core manufacturability checks
Key Design Areas JADE-CNC Reviews
Identify critical dimensions, functional fits, veri referansları, and inspection points instead of applying tight tolerances to every feature.
Review thin walls, tall ribs, deep pockets, and material behavior to reduce vibration, distortion, and machining marks.
Plan corner radii according to tool access, pocket depth, malzeme, and finish expectations.
Confirm hole depth, thread depth, blind-hole clearance, countersinks, counterbores, and gauge requirements.
Match aluminum, paslanmaz çelik, bakır, pirinç, titanyum, GÖZ ATIN, or engineering plastics with strength, sona ermek, and machining needs.
Review Ra value, kozmetik yüzler, kaplama kalınlığı, masking areas, and after-finish dimensions before machining begins.
Reference planning table
CNC Design Factors That Affect Quote and Production Review
| Design Factor | What JADE-CNC Checks | Why It Matters | Helpful RFQ Detail |
|---|---|---|---|
| Critical Tolerances | Functional dimensions, mating faces, hole position, düzlük, diklik, and GD&T callouts. | Controls inspection scope, machining setup, maliyet, and risk. | Mark only dimensions that require close control and explain fit or assembly function. |
| Minimum Wall Thickness | Thin walls, deep pockets, tall features, material stiffness, and clamping stability. | Thin features may deform, vibrate, or show visible tool marks. | Identify flexible walls and surfaces where appearance or flatness is important. |
| Internal Radius | Pocket depth, cutter access, required corner radius, and whether sharp internal corners are functional. | Tool diameter determines realistic internal corner geometry. | Confirm if a radius is acceptable or if EDM / special processing is required. |
| Hole and Thread Features | Blind hole depth, tap depth, thread standard, countersink angle, counterbore diameter, and plug gauge needs. | Incorrect callouts can delay machining, denetleme, or assembly. | Provide thread standard, derinlik, tolerance class, and whether full thread depth is critical. |
| Surface Roughness | Ra target, machined surface marks, visible faces, sealing surfaces, and functional contact surfaces. | Roughness affects finish method, denetleme, toolpath, and cycle time. | Specify roughness only where it is needed and separate cosmetic from functional surfaces. |
| Post-Machining Finish | Eloksal, pasivasyon, kaplama, tablo, boncuk patlatma, parlatma, kaplama kalınlığı, and masking areas. | Finishing can affect dimensions, dış görünüş, conductivity, and assembly fit. | State finish name, renk, coating thickness if controlled, and surfaces to protect. |
RFQ to delivery workflow
How JADE-CNC Reviews a CNC Machined Part
File Review
Check 3D model, 2D drawing, malzeme, tolerans notları, bitiş gereksinimleri, and inspection expectations.
DFM Feedback
Identify machining risk, araç erişimi, thin features, kritik boyutlar, material concerns, and finish impact.
Machining Plan
Arrange CNC milling, dönüm, 5-eksen işleme, setup sequence, iş tutma, and in-process inspection points.
Inspection and Delivery
Confirm dimensional report, CMM report, FAI-style record, finish review, ambalajlama, and shipment readiness when required.
Drawing checklist
Information That Helps Faster CNC Quote Review
ADIM, IGES, X_T, and 2D PDF drawings with revision level and clearly marked critical features.
Malzeme kalitesi, acceptable equivalent, ısıl işlem, hardness, certification needs, and blank condition if relevant.
Prototype quantity, low-volume batch quantity, repeat-order expectation, and target delivery date.
Kritik boyutlar, veri referansları, GD&T, hole position, mating surfaces, and inspection method.
Yüzey pürüzlülüğü, anotlama, pasivasyon, parlatma, boncuk patlatma, tablo, masking, and color needs.
Assembly use, load, heat, corrosion, giymek, sealing, dış görünüş, electrical contact, or packaging needs.
Need DFM Review Before CNC Machining?
CAD dosyalarını gönder, 2çizimleri, malzeme kalitesi, tolerans notları, bitiş gereksinimleri, ve miktar. JADE-CNC will review manufacturability before quotation and machining planning.
What JADE-CNC Checks Before CNC Machining Design Approval
A CNC part drawing should clearly show which features control fit, işlev, dış görünüş, and inspection. JADE-CNC reviews these design points together so the machining route, setup plan, finishing process, and inspection scope can support the intended part use.
Part Geometry
Pockets, ribs, yuvalar, bosses, alttan kesmeler, internal corners, and tool access directions are reviewed to identify machining limits and setup needs.
Tolerance and Datums
Kritik boyutlar, mating faces, veri referansları, düzlük, hole position, and GD&T notes are checked so inspection focuses on functional features.
Wall Thickness and Pocket Depth
Thin walls, deep cavities, tall ribs, and unsupported features are reviewed for vibration, deformation, tool reach, and surface mark risk.
Holes and Threads
Blind holes, tapped holes, counterbores, countersinks, thread depth, clearance, and gauge requirements are checked for machining and assembly fit.
Finish and Inspection
Yüzey pürüzlülüğü, kozmetik yüzler, kaplama kalınlığı, masking areas, and dimensional checks after finishing are reviewed against the drawing requirement.
SSS
DFM for CNC machining means reviewing a part design for manufacturability before machining. It checks whether geometry, malzeme, tolerans, wall thickness, delikler, Konular, yüzey kalitesi, and inspection requirements can be produced reliably.
A 3D CAD file defines geometry, but a 2D drawing can show tolerances, GD&T, kritik boyutlar, Konular, yüzey pürüzlülüğü, bitiş gereksinimleri, material notes, and inspection expectations.
Critical tolerances should be applied to mating faces, delik pozisyonları, sealing surfaces, bearing fits, thread features, veri referansları, and dimensions that affect assembly or function.
Evet. Tight tolerances may require slower machining, additional setups, controlled inspection, special tooling, or more process checks. Use tight tolerances only where function requires them.
There is no single wall thickness for every material or part. Thin walls should be reviewed based on material stiffness, part size, pocket depth, setup method, and flatness or appearance requirements.
Internal corners should allow enough radius for cutter access. Sharp internal corners may require EDM or special processing if they are functionally necessary.
Useful details include hole depth, thread standard, thread depth, tolerance class, countersink or counterbore size, blind-hole clearance, and whether full thread depth is required.
Surface finish can affect dimensions, kaplama kalınlığı, masking, dış görünüş, korozyon direnci, conductivity, and sealing surfaces. Functional and cosmetic surfaces should be marked separately.
Evet. JADE-CNC can review CAD files and drawings to identify tool access limits, ince duvar riski, tolerance concerns, finish impact, inspection needs, and unclear drawing requirements.
Send STEP, IGES, or X_T files, 2D PDF drawings, malzeme kalitesi, miktar, tolerans notları, surface finish requirements, inspection needs, and any assembly or application context.