BRIGHTSTAR
PROTOTYPE CNC CO., LTD
+86 137 5010 5351
EN
March. 20, 2026
In modern precision manufacturing, CNC turning stands as one of the two core processes alongside CNC milling. Whether it's transmission shafts in automotive engines, orthopedic implants in medical devices, or hydraulic fittings in the aerospace sector, almost all rotational parts rely on turning machining. According to industry reports, the global CNC lathe market continues to grow steadily---sufficient proof of this process's fundamental position in industrial manufacturing.
However, for engineers and procurement professionals who deal with drawings and suppliers daily, truly understanding CNC turning is not easy. Engineers may design features that cannot be fixtured or that incur excessive costs; procurement staff may face quotes without understanding the cost structure. This knowledge gap often leads to project delays, cost overruns, and even quality incidents.
This article will start from the process principles, gradually delving into equipment selection, design guidelines, material science, tolerance control, and finally, from a procurement perspective, break down the cost structure, quoting process, and supplier evaluation methods. Whether you are a newly qualified mechanical designer or a procurement manager responsible for the supply chain, you will find the answers you need here.
To help you navigate quickly, we suggest:
• If you are a design engineer: Focus on Part 3 (Design Guidelines)
• If you are in procurement: Focus on Part 4 (Cost and Supplier Management)
CNC turning is a subtractive manufacturing process that removes material through the rotation of the workpiece and the linear feed of the cutting tool, ultimately forming the desired rotational shape. CNC stands for Computer Numerical Control, meaning the entire machining process is controlled by a computer program, offering high precision, high repeatability, and a high degree of automation.
Unlike conventional manual lathes, CNC turning can machine complex contours (such as arcs, tapers, and threads) and ensures consistency across every part in batch production.
CNC Turning vs. CNC Milling: Core Differences
Understanding the difference between turning and milling is crucial for selecting the correct process:
• Motion Type: In turning, the workpiece rotates and the tool moves linearly; in milling, the tool rotates and the workpiece is fixed
• Typical Geometry: Turning suits rotational parts (shafts, discs, bushings); milling suits prismatic parts (boxes, plates)
• Machined Features: Turning excels at external diameters, internal holes, faces, threads; milling excels at flats, slots, cavities
Simply put, turning is suitable for "round" parts, while milling is suitable for "square" or complex-shaped parts.
A modern CNC lathe comprises several precision components:
• Bed: The foundation structure, typically made from high-strength cast iron, providing vibration damping and thermal stability
• Headstock: Houses the spindle and bearings, determining the workpiece's roundness and surface finish
• Chuck: The work-holding device, common types include three-jaw chucks, four-jaw chucks, and collet chucks
• Turret: Holds the cutting tools and rapidly indexes them for tool changes
• Tailstock: Supports the other end of long workpieces, preventing deflection or chatter during machining
• CNC Control: The brain of the lathe, common systems include FANUC, Siemens, and Mitsubishi
2-Axis CNC Lathes (X/Z): The most common type, suitable for simple rotational parts. Capable of external turning, internal boring, facing, and threading. Cannot perform milling operations.
3-Axis CNC Lathes (X/Z/C): Adds a C-axis to control spindle rotational position, enabling indexed drilling and simple milling of flats. Suitable for parts requiring cross holes or simple milling features.
4-Axis CNC Lathes with Live Tooling: Live tooling allows tools to rotate, enabling milling, drilling, and tapping operations. Transforms the lathe into a true turning center, completing complex parts in a single setup.
Multi-Axis Turning Centers: Adds a Y-axis for 3D milling, a sub-spindle for back-side machining, and a B-axis for angled machining. Ideal for extremely complex, high-precision parts in aerospace and medical industries.
Horizontal CNC Lathes: The most common configuration with a horizontal spindle. Excellent chip disposal, easy operator access, suitable for shaft-type parts.
Vertical Turning Lathes (VTLs): Vertical spindle orientation, workpiece rotates in a horizontal plane. Ideal for large-diameter, heavy parts like discs and flanges, offering stable fixturing.
Inverted Vertical Lathes: Spindle inverted facing downward. Excellent chip disposal, inherently automated, perfect for lights-out manufacturing.
Swiss-Type Automatic Lathes: Uses a guide bushing to support the material right at the cutting point. Ideal for slender parts (L/D ratios up to 20:1). Widely used in medical devices, watches, and precision electronics. The key difference from conventional lathes: the headstock moves while the tools remain stationary.
Dual-Spindle Lathes: Main and sub-spindle work together to machine both ends of a part in one setup, eliminating errors from secondary fixturing.
Mill-Turn Centers: Combine the capabilities of a lathe and a machining center, enabling 5-axis simultaneous machining of extremely complex parts.
Bar Feeders: Enable long periods of unattended operation by automatically feeding bars into the spindle. Robots and Gantry Loaders: Automate loading and unloading, allowing one operator to tend multiple machines. In-Process Gauging: Measures parts during the cycle and automatically compensates for tool wear. Industry 4.0: Digital twins and machine monitoring enable smart manufacturing.
DFM is the practice of designing parts to optimize manufacturability and reduce costs.
Principle 1: Respect the Tool Path. Design features with consideration for how the tool will approach and exit. Avoid sudden direction changes and ensure adequate clearance for tooling.
Principle 2: Standardize Features. Use standard sizes whenever possible: standard drill diameters, standard thread sizes (e.g., M6, 1/4-20), standard groove widths. This allows standard tooling rather than expensive custom tools.
Principle 3: Design for Symmetry. Parts that are balanced around the axis of rotation are easier to machine at high speeds. Significant asymmetry can cause vibration.
Principle 4: Avoid Interference. Always consider the space occupied by the turret, tool holder, and tailstock. Ensure long parts have adequate clearance.
This is one of the most important and common DFM considerations. All cutting tools have a radius at their tip (common radii: 0.2mm, 0.4mm, 0.8mm). When the tool moves along a path, this radius creates a curved transition at internal corners. If you design a sharp internal corner, the tool cannot cut it perfectly---it will leave a radius equal to its own nose radius.
Design Rule: Always specify a minimum internal corner radius, at least equal to the intended tool nose radius. If unspecified, the machinist will use a small radius tool (e.g., 0.2mm), but this may increase machining time and cost. On your drawing, clearly note the requirement, e.g., "MAX R0.4".
Undercuts (or relief grooves) are recesses machined at the base of a shoulder or at the end of a thread. Their purposes include: allowing a threading tool to exit cleanly; providing clearance for a grinding wheel; creating space for mating parts; and providing tool clearance. Whenever possible, use standard sizes (e.g., DIN 509 standard) with recommended widths and depths for different shoulder diameters. If the part requires grinding, a relief groove is almost always necessary.
Designing threads for CNC turning requires careful specification of key parameters:
• Thread Type: Metric (M), Unified (UN/UNF), Pipe (NPT/BSPT)
• Nominal Size: e.g., M10, 1/4-20
• Thread Class: e.g., 6H (internal), 6g (external)---defines the tolerance
• Thread Length: The length of fully formed thread
Internal Threads: The tap drill hole diameter must be calculated (formula: tap drill dia ≈ major dia - pitch). For blind holes, specify the required thread depth, not just the hole depth, and account for the tap's lead.
External Threads: At the end of a thread, there is typically a small unthreaded portion or "washout." If the thread must go all the way to a shoulder, you must specify a thread relief groove. A small chamfer at the start of an external thread helps engage a nut.
Machining thin-walled parts is challenging because they are prone to distortion from clamping and cutting forces.
Challenges: Chuck jaws can deform the part, which may spring back when released but not be perfectly round. Cutting forces can push the wall inward or outward, causing chatter or dimensional errors. Thin walls resonate easily, leading to poor surface finish.
Design Strategies:
• Increase Wall Thickness: The simplest solution if the design allows
• Use Stiffening Ribs: Design temporary ribs to be machined away later
• Specify Soft Jaws: Indicate using soft jaws machined to the part's contour to distribute clamping force evenly
• Consider Material: Stiffer materials (like steel) are easier to machine thin-walled than softer materials (like aluminum)
• Secondary Operations: Very thin walls may require stress-relieving between roughing and finishing
Minimum Wall Thickness Guidelines (approximate, depends on diameter and material): Aluminum 0.5-1.0mm, Steel 0.3-0.8mm, Stainless Steel 0.5-1.0mm.
Deep hole drilling generally refers to holes with a length-to-diameter (L/D) ratio greater than 3:1. Challenges include: chip evacuation, delivering coolant to the cutting tip, drill deflection, and chatter.
Design Considerations: Be aware of L/D limits---standard twist drills have limits; L/D > 10 may require specialized processes like gun drilling. The entry surface should be flat and perpendicular to the drill axis to prevent drill walking. Through holes are easier than blind holes. For moderately deep holes, specify peck drilling cycles to clear chips.
Sometimes a feature must be offset from the part's centerline---this is an
eccentric feature. On a standard lathe, this requires a 4-jaw chuck and manual indicating, which is time-consuming. On a lathe with C-axis and live tooling, the C-axis can position the spindle precisely, and live tools can machine eccentric features through X and C-axis interpolation. Eccentric features add significant cost and setup time.
Low Carbon Steels (1018/1020): Good weldability, moderate strength, low cost. Machinability is fair; may produce long chips. Suitable for general shafts, pins, brackets.
Free-Machining Steels (12L14/1215): Contain added sulfur or lead to improve machinability. Excellent machinability---good chip breaking, good surface finish, extended tool life. Ideal for high-volume standard parts. Note: 12L14 contains lead and is not suitable for food contact or medical implants.
Medium Carbon Steels (1045/1144): Higher strength than low carbon steels, heat-treatable. Machinability is good (as-rolled). Suitable for shafts, bolts, gears.
Alloy Steels (4140/4340): Contain chromium, molybdenum, nickel for enhanced strength and hardenability. Machinability is fair (annealed), difficult after hardening. Suitable for high-strength components.
303 Stainless Steel: The "free-machining" version of 304, with added sulfur. Best machinability among stainless steels. Suitable for fittings, fasteners, shafts.
304 Stainless Steel: The most common stainless steel, excellent corrosion resistance. Poor machinability due to rapid work hardening. Requires sharp tools and rigid setups. Not ideal for high-volume turning.
316 Stainless Steel: Contains molybdenum for enhanced corrosion resistance (especially against salt water). Machinability is similar to 304---difficult.
17-4 PH Stainless Steel: Precipitation-hardening stainless, achieves very high strength after heat treatment. Machinability is good (annealed state).
6061 Aluminum: The most versatile aluminum alloy, good strength, good corrosion resistance. Excellent machinability. Suitable for brackets, housings, fittings, prototypes.
2024 Aluminum: High-strength aerospace alloy, slightly lower corrosion resistance. Good machinability, excellent finish. Suitable for aircraft structures.
7075 Aluminum: Very high strength, similar to many steels. Good machinability, requires sharp tools. Suitable for aerospace and high-performance parts.
360 Brass (Free-Cutting Brass): Excellent machinability, good strength, corrosion resistant, attractive gold color. Suitable for electrical connectors, fittings, valves, decorative hardware.
Bronze: High strength, excellent wear resistance. Machinability is fair; can be abrasive to tools. Suitable for bearings, bushings.
Copper: Extremely high electrical and thermal conductivity. Poor machinability---very "gummy," produces long chips and poor finish.
Titanium Alloys (Grade 5/6Al-4V): Excellent strength-to-weight ratio, good corrosion resistance, biocompatible. Difficult to machine due to low thermal conductivity; heat stays in the cutting zone. Requires low speeds, high coolant flow, and rigid setups.
Inconel / Nickel-Based Alloys (e.g., 718): Maintain high strength at elevated temperatures, excellent corrosion resistance. Extremely difficult to machine---work harden rapidly, abrasive, retain heat. Requires specialized tooling (ceramics/CBN), very low speeds, and high-pressure coolant.
Delrin (POM): High stiffness, low friction, excellent dimensional stability. Excellent machinability. Suitable for gears, bushings, insulators.
PTFE (Teflon): Extremely low friction, excellent chemical resistance. Very soft and "gummy"; requires extremely sharp tools and careful fixturing.
Nylon: Tough, good wear resistance, but absorbs moisture. Machinability is good.
PEEK: High-performance engineering plastic, high strength, high temperature resistance. Machinability is good but material is expensive.
The ISO system defines International Tolerance (IT) grades. A lower IT number means a tighter tolerance.
• IT6-IT7: Precision grade (grinding/fine boring), ±0.004-0.009mm
• IT8-IT9: Finish turning grade, ±0.014-0.021mm
• IT10-IT11: Rough turning grade, ±0.036-0.055mm
Typical CNC Turning Capabilities:
• Standard Tolerances: ±0.13mm or ±0.1mm (IT10-IT12), achievable without special effort
• Precision Tolerances: ±0.025mm or ±0.02mm (IT7-IT8), requires careful setup, sharp tools, and multiple passes
• Ultra-Precision Tolerances: ±0.005mm or better (IT5-IT6), requires specialized machines, controlled environments, and may require grinding
Design Rule: Only specify tight tolerances where functionally necessary. Use general tolerances (like ISO 2768-m) for non-critical dimensions.
Machine Tool Accuracy: Spindle runout, axis positioning accuracy.
Tool Wear: Dimensions change as the tool wears, compensated by tool offsets.
Thermal Expansion: Heat from cutting and the machine causes expansion; stabilizing temperature is key.
Workpiece Material: Some materials (like brass) hold tolerances better than others (like soft plastics).
Fixturing and Clamping: Parts can distort when clamped and spring back when released.
Operator and Inspection: Careful setup and accurate measurement are essential.
Ra (Roughness Average) is the arithmetic average of the profile heights.
• Ra 0.1-0.2: Mirror finish, grinding/superfinishing
• Ra 0.4-0.8: Precision finish, fine turning (with wiper inserts)
• Ra 1.6: Good finish, finish turning
• Ra 3.2: Medium finish, semi-finish turning
• Ra 6.3: Rough finish, rough turning
Design Rule: Specify the required Ra value. Do not over-specify; Ra 1.6 is adequate for most functional surfaces. Ra 0.4 adds significant cost.
Concentricity: Controls how well the axis of one diameter aligns with the axis of another. Critical for rotating parts. Machining both ends in the same setup is the best way to ensure good concentricity.
Circular Runout: Controls how much a surface deviates when the part is rotated 360°. A practical control for rotating parts.
Cylindricity: Controls the combined effects of roundness, straightness, and taper along a cylindrical feature. Important for sealing surfaces and bearing fits.
Position: Controls the location of features like cross holes or slots relative to the part's axis. Used for assembly alignment.
Understanding cost structure helps procurement professionals read quotes accurately, negotiate effectively, and make informed sourcing decisions.
A typical CNC turned part cost consists of:
• Material Cost: Approximately 20-40%
• Machining Cost: Approximately 40-60%
• Tooling Cost: Approximately 5-15%
• Overhead and Profit: Approximately 10-20%
Material cost depends on raw material size, material grade, and purchase quantity. Optimization strategies include: selecting appropriate bar diameter to minimize machining allowance and improve material utilization; considering scrap value; and purchasing in larger quantities to reduce unit price. For some materials (like titanium or Inconel), material cost may dominate the total.
Machining cost is based on machine hourly rate multiplied by machining time. Machine hourly rates vary by equipment type: basic 2-axis lathes approximately $12-18/hour; turning centers with live tooling approximately $18-27/hour; Swiss-type lathes approximately $22-37/hour; 5-axis mill-turn centers approximately $45-75/hour.
Machining time includes: cutting time (spindle running); auxiliary time (tool changes, rapid moves, loading/unloading); and one-time programming and setup time (NRE). Complex parts, deep holes, and multiple passes significantly increase machining time.
Tooling cost includes: standard tools (indexable inserts, drills, taps)---lower cost, consumed based on usage; custom form tools---specially manufactured, higher cost, suitable for high-volume production; and special tool materials (CBN, PCD, ceramics) for difficult-to-machine materials---very expensive. Tool life and change frequency also affect total cost.
Post-processing: Surface treatments (anodizing, plating, black oxide, passivation) are priced by part area or weight and typically add 2-5 days to lead time. Heat treatment (quenching, carburizing) carries distortion risks and may require grinding stock. Secondary operations like cleaning, deburring, and marking also have associated costs.
Inspection costs: Routine sampling inspection is low cost; full First Article Inspection (FAI) requires several hours of CMM time and is more expensive; special inspections (spectroscopy, hardness testing, NDT) incur additional charges. Requiring full inspection and detailed reports will significantly increase cost.
Quantity has a significant non-linear effect on unit price:
• 1 piece (prototype): NRE dominates, highest unit price
• 10-100 pieces (low volume): NRE amortized, unit price begins to drop but remains high
• 100-1000 pieces (medium volume): Economies of scale appear, dedicated tooling may be considered
• 1000+ pieces (high volume): NRE fully amortized, material discounts apply, lowest unit price
Design Rule: Prototype stage may accept high unit prices; before moving to production, discuss process optimization with the supplier to reduce unit price.
Providing complete and accurate information is the foundation for getting a precise quote. Your RFQ should include:
• 3D Model: STEP or IGES format, fully describing the geometry
• 2D Drawing: PDF or DWG format, containing dimensions, tolerances, critical notes, and surface finish requirements
• Material Grade and Condition: e.g., 6061-T6, 304, 17-4PH H900
• Quantity: Clearly specify prototype, pilot run, or production volume
• Surface Finish Requirements: Anodizing, plating, passivation, etc.
• Special Inspection Requirements: Full dimensional report, material certificates, etc.
• Desired Lead Time: Helps the supplier assess scheduling
Why is a 2D drawing essential? The 3D model describes the shape; the 2D drawing defines the requirements. Tolerances, surface finishes, and special notes can only be clearly communicated on a 2D drawing.
When you receive a quote, pay attention to these key elements:
• NRE Fees: What is included? Programming, fixture design, first-article setup? Is it charged once or amortized into the unit price?
• Unit Price: Does it include tax?
• Shipping Terms: EXW (Ex Works), FCA (Free Carrier), DDP (Delivered Duty Paid)? Who bears the shipping cost?
• Payment Terms: Deposit percentage? Payment timeline? Common terms are 30% deposit + 70% before shipment, or net 30 days.
• Quote Validity: Due to material price fluctuations, quotes are typically valid for 15-30 days.
Online Automatic Quote: Upload a 3D model, and the system automatically analyzes features and provides a quote. Pros: Instant feedback. Cons: May not handle complex tolerances, special materials, or specific surface treatments accurately.
Manual Accurate Quote: An engineer reviews the drawing and provides a detailed quote. Pros: Considers process details, highly accurate. Cons: Takes 24-48 hours.
Best Practice: Use automatic quotes for simple parts to quickly compare prices; for complex, high-tolerance, or special material parts, request a manual quote.
Lead time is influenced by part complexity, material availability, and supplier schedule. General benchmarks:
• Prototypes (1-10 pieces): 5-10 business days
• Low Volume (10-100 pieces): 2-3 weeks
• High Volume (100+ pieces): 4-8 weeks (including material procurement)
Material Availability: Common materials (6061, 12L14) are often in stock, leading to shorter lead times. Specialty materials (titanium, Inconel) need to be purchased, adding 1-2 weeks.
Machine Schedule: Lead times extend during peak seasons when schedules are full. Communicate early about upcoming projects.
Part Complexity: Custom tooling requirements, complex multi-axis programming, and deep hole drilling all increase lead time.
Surface Treatment Outsourcing: Anodizing, heat treatment, and other external processes typically add 3-5 days.
Expedited service usually requires an additional fee (approximately 50-100%) as the supplier will prioritize your job. Suitable for urgent prototypes or production line stoppage risks. It's best to plan ahead and avoid frequent expedite requests.
When selecting a supplier, first verify their quality system certifications:
• ISO 9001:2015: Basic quality management system, essential
• AS9100D: Aerospace standard, indicates the supplier can handle demanding requirements
• ISO 13485: Medical device standard, necessary for medical component suppliers
• IATF 16949: Automotive standard, suitable for high-volume automotive parts
A supplier's equipment list defines their capability boundaries:
• Machine Types: Do they have Swiss-type lathes? Turning centers with live tooling? Multi-axis mill-turn centers?
• Machining Envelope: Maximum turning diameter and length? Can they accommodate your parts?
• Machine Brands: Leading brands like DMG MORI, Mazak, Citizen, Star indicate precision and reliability
• Precision Capability: What tolerance grades can their equipment consistently achieve? Do they have precision grinding machines?
Engineering Team: How many process engineers? Average years of experience? Can they provide DFM feedback?
DFM Feedback Quality: Good suppliers will proactively identify manufacturability issues in your design and suggest improvements, rather than simply quoting from the drawing. This is a key differentiator.
Complex Part Experience: Do they have experience with similar parts? Can they provide case studies?
Inspection Equipment: Do they have CMMs, profilometers, optical comparators, hardness testers?
First Article Inspection (FAI): Do they provide full dimensional FAI reports? Do they follow AS9102 format?
Process Control: Do they implement Statistical Process Control (SPC)? Do they use in-process gauging and automatic tool compensation?
Communication Responsiveness: How quickly do they respond to inquiries? Are their answers professional and clear?
Non-Disclosure Agreement (NDA): Are they willing to sign an NDA to protect your intellectual property?
Customer References: Can they provide references from similar industries?
Q1: Can a CNC lathe produce square or hexagonal shapes?
Answer: Standard turning only produces round cross-sections. If you need hexagonal heads or square features, you must use a turning center with live tooling for milling, or secondary operations like broaching.
Q2: What is the core difference between turning and milling?
Answer: In turning, the workpiece rotates and the tool moves linearly; in milling, the tool rotates and the workpiece is fixed (or moves linearly). Turning produces rotational parts; milling produces prismatic parts.
Q3: What is the difference between Swiss-type and conventional lathes?
Answer: Swiss-type lathes have a guide bushing supporting the material at the cutting point, and the headstock moves to feed the material. They are ideal for long, slender, precision parts. Conventional lathes have stationary headstocks with moving tools, suitable for shorter, larger-diameter parts.
Q4: What is the highest precision achievable in CNC turning?
Answer: Standard machining achieves ±0.13mm, precision machining achieves ±0.025mm, and ultra-precision machining can reach ±0.005mm under special conditions.
Q5: What is live tooling? Why use it?
Answer: Live tooling refers to rotating tools in the turret that can perform milling, drilling, and tapping operations on a lathe. It enables complete machining of complex parts in a single setup.
Q6: What causes chatter marks during turning and how to fix it?
Answer: Check if the tool is sharp, if fixturing is rigid, if cutting parameters are appropriate (adjust speed/feed), and if the workpiece needs additional support (tailstock/steady rest).
Q7: How to solve chip breaking problems in turning?
Answer: Use inserts with chip breaker geometry, adjust feed rate and depth of cut, or change tool angles.
Q8: Which is better for machining, 12L14 or 1215?
Answer: 12L14 contains lead and has slightly better machinability than 1215, making it the top choice among free-machining steels. However, 12L14 is not suitable for food contact or medical applications due to lead content.
Q9: Why is 303 stainless steel easier to machine than 304?
Answer: 303 contains added sulfur, which forms inclusions that act as chip breakers and lubricants, significantly improving machinability. 304 lacks these additions and work hardens rapidly.
Q10: Should heat treatment be done before or after turning?
Answer: Typically, rough machining is done first, followed by heat treatment, then finish machining to final dimensions. This controls distortion from heat treatment.
Q11: Can turned parts be anodized? What should be considered?
Answer: Yes, but for aluminum like 6061, be aware that sharp corners may trap solution, threads may need masking or post-tapping, and dimensions will increase slightly due to the anodic coating thickness.
Q12: What is the typical hourly rate for CNC turning?
Answer: In China, rates typically range from $12-45 per hour, depending on machine type, location, and supplier capability.
Q13: Why is my part quote so high?
Answer: Common reasons include: expensive material, overly tight tolerances, complex geometry requiring special tooling, small batch size, and demanding surface finish requirements.
Q14: What is the minimum order quantity? Can I order just one piece?
Answer: CNC machining has no minimum order quantity---1 piece prototypes are completely feasible. However, the unit price will be highest for single pieces as NRE costs are borne entirely by that one part.
Q15: How can I reduce the cost of CNC turned parts?
Answer: Loosen non-critical tolerances, use standard feature sizes, choose free-machining materials, increase order quantity, and simplify design to reduce machining time.
Q16: How long are quotes typically valid?
Answer: Usually 15-30 days, due to material price fluctuations. For long-term projects, confirm price adjustment mechanisms with the supplier.
Q17: Is CNC machining in China cost-competitive?
Answer: Compared to Europe and North America, Chinese machining still offers significant cost advantages, though logistics, tariffs, and communication factors should be considered.
Brightstar specializes in high-precision CNC turning machining, providing complete solutions from prototypes to production volumes for medical, aerospace, automotive, and industrial equipment sectors.
Equipment Portfolio:
• Swiss-Type Lathes: Multiple Citizen and Star Swiss lathes, maximum turning diameter 32mm, equipped with guide bushings and live tooling. Ideal for precision slender parts, medical devices, and electronic components
• Multi-Axis Turning Centers: DMG MORI and Mazak turning centers with Y-axis and live tooling, maximum turning diameter 300mm. Capable of complete machining of complex parts in one setup
• Dual-Spindle Turning Centers: Equipped with sub-spindles for complete front and back machining, ensuring concentricity
• Inspection Equipment: Zeiss CMM, profilometers, optical comparators, hardness testers ensuring full process quality control
Machining Envelope: Maximum diameter 300mm, maximum length 500mm (Swiss lathes can handle L/D ratios up to 20:1 for slender parts).
Precision Capability: Standard tolerances ±0.01mm, precision tolerances up to ±0.005mm.
• Step 1: Upload Drawings/Models: Submit STEP/IGES 3D models and 2D drawing PDFs via website or email.
• Step 2: Engineering Review: Our engineering team performs DFM analysis, evaluates manufacturability, and provides optimization suggestions (feedback within 24 hours).
• Step 3: Accurate Quoting: Provide detailed quotes including material cost, machining cost, tooling cost, NRE fees, and lead time.
• Step 4: Order Confirmation: Sign contract, confirm payment terms, project initiation.
• Step 5: Production and Process Control: Programming, setup, first article inspection, production, full process quality control.
• Step 6: Full Inspection and Reporting: Provide First Article Inspection (FAI) reports, full dimensional reports, and material certificates as required.
• Step 7: Packaging and Shipping: Professional packaging to protect parts, reliable logistics selection, tracking number provided.
• Step 8: After-Sales Follow-up: Confirm receipt, gather feedback, support long-term cooperation.
• Technical Depth: Engineering team with average 10+ years experience, proficient in Swiss turning, multi-axis machining, and difficult materials (titanium, Inconel, 17-4PH).
• Quality Assurance: ISO 9001:2015 certified, 100% critical dimension inspection, traceable quality records.
• Transparent Communication: Real-time project status updates, no hidden costs, honest and professional DFM suggestions.
• Confidentiality Commitment: NDAs signed to protect your intellectual property and design secrets.
• Flexible Volumes: Competitive solutions from 1-piece prototypes to 100,000-piece production runs.
Medical Orthopedic Customer: Required bone screws with diameter 3mm and length 80mm---L/D ratio >25, impossible on conventional lathes. We used Swiss-type lathes with guide bushings to complete external diameters, threads, and head slots in one setup, holding tolerances at ±0.01mm with 5-day delivery.
Aerospace Customer: Inconel 718 high-temperature alloy fittings requiring strict position tolerance and surface finish. We optimized cutting parameters, used specialized tooling, and provided full FAI reports and material certifications meeting AS9100 requirements.
Automotive Components Customer: Aluminum valve body requiring external diameters, internal bores, cross holes, and seal grooves in one setup. Using Y-axis turning centers with live tooling, we completed what previously required three separate operations in one setup, reducing cost by 30% and lead time by 50%.
Whether you are designing a high-precision medical implant or sourcing the best supplier for high-volume automotive components, Brightstar provides end-to-end solutions.
Contact Us:
Email: amy@brightstarprototype.com
Phone: +86-13750105351
Feel free to reach out for a free technical consultation or a quote!
