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승인된 고객 사례 Study

Precision CNC 가공
자동차 Prototype

Custom Center-Lock Wheel Hubs for FSAE Racing. ±0.01 mm tolerance in Aluminum 7075-T6. Delivered in just 10 days.

프로젝트 개요

Industry
자동차
Material
Al 7075-T6
Precision
±0.01 mm
Tech
CNC 선반 가공
Lead Time
10 Days
Volume
4 Sets

과제

"For Brown Formula Racing, wheel hubs are mission-critical components integrating the drivetrain, bearings, and wheels. These parts withstand massive cornering forces and braking torques."

Critical Requirements

  • Excellent concentricity to prevent vibration at high speeds.
  • High-strength performance combined with aggressive lightweighting.
  • Precise thread engagement for reliable wheel locknut safety.

Our Execution

As a premier provider for motorsports, we developed a comprehensive strategy combining lathe work and 5-axis milling.

1

Minimized Setup Strategy

We used a two-sided turning strategy. Each end was rough-turned, finish-turned, drilled, bored, and threaded with controlled flipping to maintain datums and ensure alignment.

2

Deep Pocket Machining

For challenging internal pockets, we used a multi-step approach: pilot drilling for chip clearance, helical rough milling, and controlled finishing passes.

3

Custom 5-Axis Fixtures

Dedicated fixtures were designed for secure clamping during 5-axis machining, eliminating cumulative positioning errors.

기술 포인트

  • CNC 선반 가공 (Rough & Finish)
  • Deep Hole Drilling
  • Precision Boring
  • Dynamic Pocket Milling
  • 5-Axis Contour Finishing

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CAD 검토 업로드

Evidence basis

엔지니어링 evidence record

자동차 prototype machining record. This public case summary is based on anonymized RFQ notes, engineering review, inspection planning, and packing handoff records; customer-sensitive details removed.

Last reviewed: 2026-07-01
Customer industry
자동차 prototype development; customer-sensitive details removed.
Part use
Wheel-hub validation sample for assembly, dimensional fit, and finish review.
Quantity
Small prototype batch for engineering validation, not mass-production release.
Material
7075 aluminum or equivalent material confirmed from RFQ notes and drawing requirements.
Process
CNC turning, milling, drilling, tapping, deburring, and surface-finish review.
Critical dimensions / tolerances
Bearing bores, bolt pattern, datum faces, and runout callouts controlled per approved drawing.
표면 마감
Machined and deburred surfaces reviewed against drawing notes and visible cosmetic zones.
Max manufacturing risk
Datum stack-up and bore/runout alignment could affect assembly validation if the setup sequence is wrong.
DFM before / after
Before: thin ribs and sharp internal transitions increased chatter risk. After: tool access, radius, and fixture sequence were reviewed before machining.
Inspection method
In-process gauge checks plus final dimensional report; CMM or FAI can be scoped during RFQ for critical features.
Shipping documents
Commercial invoice, packing list, export handoff photos, and agreed inspection documents when requested before production.
Lead time / result
Prototype route completed after engineer review; timing depends on drawing freeze, inspection scope, and queue capacity.
Customer authorization
Representative case shared with customer-sensitive details removed; public photo use is limited to approved imagery.
Evidence basis
Based on anonymized RFQ notes, DFM review, inspection planning, and packing handoff records. Last reviewed: 2026-07-01.
견적 boundary: This case does not imply default CMM, FAI, certification, regulatory approval, or production readiness. Inspection method, shipping documents, customer authorization, and documentation package must be agreed during RFQ.
This case study is shared as a representative manufacturing example with customer-sensitive details removed. All intellectual property rights remain with the original owner.
견적 가능한 RFQ 준비 방법

자동차 prototype case notes for sourcing teams

자동차 prototype work needs practical communication around material, fit, finish, inspection, and timeline because a part may be used for assembly checks, design validation, display, or early vehicle testing.

Common route

CNC machining, 5-axis machining, sheet metal fabrication, surface finishing, and small-batch assembly support.

견적 focus

Mark critical dimensions, mating interfaces, finish surfaces, material grade, and whether the part is for visual review or functional test.

Inspection proof

Before-shipment photos, key dimension reports, finish confirmation, packaging review, and revision notes for future batches.

Related buyers

자동차 suppliers, engineering teams, mobility startups, aftermarket product teams, and industrial design groups.

견적 가능한 RFQ 준비 방법

Before quoting, send the part purpose, CAD revision, material target, finish, tolerance-critical features, inspection expectations, packaging needs, and destination so engineering can price the correct route.

정확한 검토에 필요한 정보

강한 RFQ는 기능 목표, 중요 치수, 외관 요구, 수량, 조정 가능한 조건, 출하 전 필요한 검사 증빙을 명확히 합니다.

Phone-photo case evidence

Case pages need project-context proof, not only finished render-style images. This evidence shows drawing review and quote-stage engineering work before prototype production.

Engineer reviewing prototype drawings and CAD notes at a laptop
Drawing and CAD review before prototype route confirmation
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