Руководство по проектированию станков с ЧПУ
CNC Machining Design Guide for Custom Parts
Review practical DFM points for CNC machined parts before quotation, including tolerance planning, толщина стенки, hole design, thread features, выбор материала, surface finish impact, и требования к проверке.
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, сорт материала, критические размеры, зоны допуска, обработка поверхности, thread callouts, hole depths, ссылки на исходные данные, 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, нити, ГД&Т, шероховатость поверхности, требования к отделке, or inspection records are important.
Core manufacturability checks
Key Design Areas JADE-CNC Reviews
Identify critical dimensions, functional fits, ссылки на исходные данные, 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, материал, и завершить ожидания.
Confirm hole depth, thread depth, blind-hole clearance, countersinks, counterbores, and gauge requirements.
Match aluminum, нержавеющая сталь, медь, латунь, титан, ПЭК, or engineering plastics with strength, заканчивать, and machining needs.
Review Ra value, косметические лица, толщина покрытия, Маскирующие области, 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, сопрягающиеся грани, hole position, плоскостность, перпендикулярность, and GD&T callouts. | Controls inspection scope, machining setup, расходы, and risk. | Mark only dimensions that require close control and explain fit or assembly function. |
| Minimum Wall Thickness | Тонкие стены, 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, инспекция, or assembly. | Provide thread standard, глубина, tolerance class, and whether full thread depth is critical. |
| Surface Roughness | Цель Ра, machined surface marks, видимые лица, уплотнительные поверхности, and functional contact surfaces. | Roughness affects finish method, инспекция, toolpath, and cycle time. | Specify roughness only where it is needed and separate cosmetic from functional surfaces. |
| Post-Machining Finish | Анодирование, пассивация, покрытие, рисование, дробеструйная обработка, полировка, толщина покрытия, and masking areas. | Finishing can affect dimensions, появление, проводимость, and assembly fit. | State finish name, цвет, 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 рисунок, материал, примечания о допусках, требования к отделке, and inspection expectations.
DFM Feedback
Identify machining risk, доступ к инструменту, thin features, критические размеры, material concerns, and finish impact.
Machining Plan
Arrange CNC milling, поворот, 5-механическая обработка оси, setup sequence, работа, and in-process inspection points.
Inspection and Delivery
Confirm dimensional report, Отчет ШМ, FAI-style record, finish review, упаковка, and shipment readiness when required.
Drawing checklist
Information That Helps Faster CNC Quote Review
ШАГ, IGES, X_T, and 2D PDF drawings with revision level and clearly marked critical features.
Марка материала, acceptable equivalent, термическая обработка, hardness, certification needs, and blank condition if relevant.
Prototype quantity, low-volume batch quantity, repeat-order expectation, and target delivery date.
Критические размеры, ссылки на исходные данные, ГД&Т, hole position, сопрягаемые поверхности, и метод проверки.
Шероховатость поверхности, анодирование, пассивация, полировка, дробеструйная обработка, рисование, маскировка, and color needs.
Assembly use, нагрузка, нагревать, коррозия, носить, уплотнение, появление, electrical contact, or packaging needs.
Need DFM Review Before CNC Machining?
Отправить файлы САПР, 2Д-чертежи, сорт материала, примечания о допусках, требования к отделке, и количество. 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, функция, появление, и осмотр. 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, ребра, слоты, bosses, подрезает, internal corners, and tool access directions are reviewed to identify machining limits and setup needs.
Tolerance and Datums
Критические размеры, сопрягающиеся грани, ссылки на исходные данные, плоскостность, hole position, and GD&T notes are checked so inspection focuses on functional features.
Wall Thickness and Pocket Depth
Тонкие стены, 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
Шероховатость поверхности, косметические лица, толщина покрытия, Маскирующие области, and dimensional checks after finishing are reviewed against the drawing requirement.
Часто задаваемые вопросы
DFM for CNC machining means reviewing a part design for manufacturability before machining. It checks whether geometry, материал, терпимость, толщина стенки, дыры, нити, обработка поверхности, and inspection requirements can be produced reliably.
A 3D CAD file defines geometry, but a 2D drawing can show tolerances, ГД&Т, критические размеры, нити, шероховатость поверхности, требования к отделке, примечания к материалам, and inspection expectations.
Critical tolerances should be applied to mating faces, позиции отверстий, уплотнительные поверхности, bearing fits, thread features, ссылки на исходные данные, and dimensions that affect assembly or function.
Да. 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, толщина покрытия, маскировка, появление, коррозионная стойкость, проводимость, and sealing surfaces. Functional and cosmetic surfaces should be marked separately.
Да. JADE-CNC can review CAD files and drawings to identify tool access limits, тонкостенный риск, tolerance concerns, finish impact, потребности в инспекциях, and unclear drawing requirements.
Send STEP, IGES, or X_T files, 2D PDF drawings, сорт материала, количество, примечания о допусках, Требования к отделке поверхности, потребности в инспекциях, and any assembly or application context.