Swiss-type turning of spindles/pins
Swiss-type turning of spindles/pins capability for titanium components
What is Swiss-type turning of spindles/pins?
Swiss-type turning of spindles/pins capability for titanium components
Precision machining capability for Swiss-type turning of spindles/pins, utilizing multi-axis CNC centers with in-process inspection and SPC quality control.
Engineering Parameters & Capabilities
Swiss-type automatic lathes use a sliding headstock and fixed guide bushing to machine slender titanium components. The guide bushing supports the bar stock immediately behind the cutting tool, eliminating deflection for high length-to-diameter ratios, specifically for pins. Precision pins for fasteners and medical applications present unique challenges: cylindrical OD tolerance ±0.005 mm with chamfer/radius control. Tight straightness (< 0.02 mm over 50 mm) is required for press-fit applications.
| Parameter | Primary Method | Alternative Method |
|---|---|---|
| Bar Support | Guide bushing supports stock at tool contact point | Chuck-only — no bushing |
| L:D Ratio | Up to 20:1 without chatter | < 4:1 typical |
| Cycle Time | Single op — mill, drill, turn simultaneously | Multiple ops, longer cycle |
Engineering Capabilities & Limits
Precision machining capability for Swiss-type turning of spindles/pins, utilizing multi-axis CNC centers with in-process inspection and SPC quality control.
Hole Types Supported
Heat Control Measures
Synchronized guide bushing with high-pressure oil coolant. Tool engagement is distributed across multiple axes simultaneously, spreading the thermal load.
Flatness & Stress Relief
Guide bushing support eliminates deflection for L:D ratios up to 20:1. Straightness within 0.005 mm over a 100 mm length.
Tolerance
±0.005 mm (diameter) / ±0.01 mm (length)
Typical Applications & Components
This process is used to manufacture the following titanium components.
Titanium Bottom Bracket Spindle
Grade 5 Ti-6Al-4V Cycling / BicycleTitanium Cassette Cog
Grade 5 Ti-6Al-4V Cycling / BicycleTitanium Chainring
Grade 5 Ti-6Al-4V Cycling / BicycleTitanium Chainring Bolt
Grade 5 Ti-6Al-4V Cycling / BicycleTitanium Derailleur Limit Screw
Grade 5 Ti-6Al-4V Cycling / BicycleTitanium Derailleur Pulley
Grade 5 Ti-6Al-4V Cycling / BicycleSecondary Operations & Downstream Processing
Enhance your component with our integrated downstream services:
Thread Rolling
Cold-forming of threads for superior fatigue performance.
Centerless Grinding
OD grinding achieves precision diameters within ±0.002 mm.
Chamfering
Chamfering for Swiss-type turning of spindle and pin components.
Quality Assurance & Inspection
Inspection Items
- Swiss-type turning of spindles/pins specific dimensional verification (CMM / vision)
- Material grade verification (PMI / OES spectrometer)
- Biocompatibility validation per ISO 10993
Quality Standards & Certifications
- ISO 9001:2015 — Quality Management System
- AS9100D — Aerospace Quality Management
- ASTM B265 — Titanium Strip, Sheet, and Plate Standard
- ISO 13485 — Medical Device Quality Management
Frequently Asked Questions
What titanium grades are suitable for Swiss-type turning of spindles/pins?
What tolerances can be achieved with Swiss-type turning of spindles/pins?
What quality certifications apply to Swiss-type turning of spindles/pins?
What is the typical lead time for Swiss-type turning of spindles/pins projects?
Can you provide DFM feedback for my Swiss-type turning of spindles/pins design?
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Guidance for the professionals who specify titanium
Role-specific answers and resources for engineers and buyers in this industry.
Common questions from this audience
What quality systems and certifications do you hold?
AS9100D, ISO 9001, ISO 13485, NADCAP and ITAR-compliant — with full material traceability and in-house CMM inspection.
How do you verify dimensional quality?
In-house CMM metrology and GD&T validation per ASME Y14.5, with first article inspection reports.
Do you provide engineering support and DFM?
Yes—engineering support for DFM, material selection, and tolerance feasibility.
Related resources
Request a quoteOne Metal. One Focus. Infinite Precision.
Founded in 2011 in Baoji's Titanium Valley, BOZE Metal is dedicated exclusively to titanium — from raw material to precision engineering. AS9100D, ISO 13485 & ISO 9001 certified with 500+ clients across Aerospace, Medical & Motorsport industries, we deliver end-to-end precision titanium CNC machining with full material traceability from source to component.
Boze Titanium Manufacturing Center is operated by Baoji Boze Metal Products Co., Ltd.