CNC加工成本：报价是如何算出来的

CNC加工报价不是一张价目表。它是几个具体输入的总和：您指定的材料、几何形状所需的机时、零件所需的装夹与编程工作量、图纸要求的公差和表面处理，以及订购数量。其中任何一项变化，价格都会随之变化——这也是两家供应商对同一图纸报出不同价格的原因，而获得更低价格的最快途径，通常是对图纸做一点小改动，而不是换一家供应商。

本页说明CNC Machining Hub如何核算价格：我们从您的文件中读取哪些输入，哪些是您在发询盘前就能控制的，以及设计人员最常为不必要的精度买单的地方在哪里。发送附材料、数量和表面处理要求的图纸，您将收到一份注明假定条件的书面报价，可与其他报价在同等条件下比较。

加工能力

• 逐图成本评审：报价前我们读取几何形状、公差、材料和表面处理，并指出哪些特征在推高价格。
• 可制造性反馈（DFM）：我们标出会迫使增加装夹、特殊刀具或手工精整的特征——并在功能允许时建议更便宜的等效方案。
• 数量价格：随着装夹和编程成本被摊薄，单件成本下降；您提出需求时，我们按多个数量档对同一零件报价。
• 选材建议：常用牌号备有库存（6061、7075、304/316、黄铜、紫铜、钛、工程塑料），并在牌号选择推高成本或交期时予以标出。
• 公差建议：标准加工保持±0.1 mm；只有功能确实需要的尺寸才应收紧公差，报价前我们会明确指出。
• 表面处理选项：阳极氧化、电镀、粉末喷涂、抛光和钝化处理作为独立报价项列出，每个环节的加价一目了然。

常用材料

材料通常是最大的单项变量。我们加工铝合金（6061、7075、5052）、不锈钢（304、316、201）、碳钢与合金钢、黄铜、紫铜、钛和工程塑料（ABS、PC、POM、PA6、PMMA、PEEK）。库存情况、切削性能和认证要求都同时影响价格和交期，请告知应用场景，我们会指出换一种牌号能在哪里省下成本。

表面处理

表面处理按工序计价：机加工原表面、阳极氧化、电镀、粉末喷涂、抛光、钝化处理、喷砂或图纸指定的处理方式。装饰性要求是最常见的隐性成本——覆盖整个零件的装饰面，远贵于只在需要的功能面上做明确处理。

公差

标准CNC公差通常为±0.1–0.2 mm，需要之处可做±0.05 mm或更严的精密加工。公差是成本的放大器：每个超出功能需要的收紧尺寸，都会增加检验时间、降低切削速度并推高报废风险，因此报价前我们会审图并确认可实现的公差。

关键规格

工艺选项

• CNC machining is a subtractive manufacturing process.
• Finishing Options: Black Oxide, Electropolishing, ENP, Media Blasting, Nickel Plating, Passivation, Powder Coating, Tumble Polishing, Zinc Plating, Vibratory Tumbling
• EPX 82 is processed using Carbon DLS
• MUD is a type of mold that uses a standard injection molding frame.
• Different taper turning methods suit different jobs. Compound slides often handle short tapers, while CNC interpolation and taper attachments improve repeatability on longer parts
• G92 is used by programming one or more G92's right after the G76 threading cycle
• Estimates are provided through an auto-quoted method.
• EDM relies on a voltage and a thin wire
• Advanced machining processes like micro-machining and EDM are used to create small, precise mold cavities and cores

Surface Finish Reference

• The finish of MoldTech MT11010 is a fine matte texture.
• The finish of MoldTech MT11020 is a medium matte texture.
• The finish of MoldTech MT11030 is a coarse matte texture.
• SPI A-1 has a surface roughness of 0.012–0.025 µm.
• SPI B-2 has a finish of Medium semi-gloss.
• SPI B-2 has a surface roughness of 0.10–0.15 µm.
• SPI C-3 has a surface roughness of 0.63–0.70 µm.
• Super high gloss, polished with a Grade #3 (6000-grit) diamond buff to Ra 0.012–0.025 µm.
• Medium semi-gloss, finished with 400-grit paper to Ra 0.10–0.15 µm.
• Normal matte, polished with 320-grit stone to Ra 0.63–0.70 µm.

Tolerance Reference

• The tolerance with drawing for CNC Milling is as low as +/- 0.005 mm.
• FDM 3D printing offers a low-cost component with average accuracy and uses thermoplastics for 3D printing.
• Wire Cut EDM is highly accurate.
• The U6 H.E.A.T machine achieves tight tolerances.
• Die sinker EDM is capable of maintaining tight tolerances
• The shop needs to have CNC machines that can achieve a specific tolerance.

Industries We Serve

• antennas
• automotive
• CNC machined parts
• custom parts
• electronics
• medical diagnostic
• optical displays
• optical_systems

Material Reference

• ABS
• Austenitic Stainless Steel
• Carbon steel
• ceramic
• composites
• Copper - T2
• copper or graphite
• Hardened Materials
• High Impact Polystyrene
• Low-density polyethylene
• MDF
• metal
• Polybutylene Terephthalate
• SUS304
• thermoplastics
• thick metal sheets
• tungsten carbide

Related Processes

Common Applications

• plastic molded parts
• Aerospace
• Robotics
• consumer goods
• energy

Ordering, Lead Times & MOQ

Custom CNC parts carry no forced MOQ; ordering from a single prototype piece is standard industry practice.

Instant-quote platforms publicly advertise prototype lead times of 1-3 business days.

Online RFQ is the industry-standard flow: upload a 3D model (STEP/STP/DWG/DXF), receive an instant quote or engineer review, then production, inspection, and delivery.

常见问题

相关服务

• CNC加工服务
• CNC铣削服务
• CNC加工制造商与供应商

Related Knowledge