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Custom 7075-T6 Aluminum Robotic Arm Joint Housing with 5-Axis CNC Machining and Hard Anodizing for Precision Automation

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CNC 제조 솔루션

저희와 연락

Mrs. Yang

kristen.yang@jinbo-china.com

+86 13798898651

Y13798898651

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Custom 7075-T6 Aluminum Robotic Arm Joint Housing with 5-Axis CNC Machining and Hard Anodizing for Precision Automation

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Custom CNC Machined Aluminum 7075 Robotic Arm Joint Housing

Product Overview

Robot joints demand uncompromising precision. Every degree of backlash compromises positioning accuracy, and every gram of excess weight amplifies across the arm's kinematic chain. This is why serious robotic arm designers consistently choose Aluminum 7075-T6. While not the most economical option, its 572 MPa tensile strength and 2.81 g/cm³ density deliver a strength-to-weight ratio unmatched by 6061 aluminum.

The true challenge lies in maintaining tolerances. A robotic joint housing typically requires bearing bores within ±0.005mm, concentricity between bearing seats under 0.01mm, and mating surfaces flat enough to maintain consistent contact under dynamic loading. Achieving this on parts with curved outer profiles, internal cable routing channels, and multi-face bolt patterns demands 5-axis machining and expert craftsmanship.

Since 2003, we have specialized in machining robotic joint housings for automation OEMs. Complex curved mounting interfaces and integrated cable channels that challenge most shops are routine for our operations. Our 5-axis mills process complete geometries in single setups, eliminating datum transfer errors between operations. Every component undergoes first article inspection with comprehensive CMM reporting on all critical dimensions.

These housings serve in pick-and-place robots, welding automation cells, semiconductor wafer handlers, packaging systems, and laboratory automation equipment. Hard anodizing (Type III) remains the preferred surface treatment, providing Rockwell 60-70 HRC surface hardness essential for robots cycling millions of times annually.

Key Features

7075-T6 Strength: 572 MPa tensile strength at approximately one-third steel's weight – enabling faster robot arm acceleration and reduced energy consumption per cycle
Bearing Bore Precision: ±0.005mm on bearing seats, achieving H7 tolerance class for proper bearing seating and retention
5-Axis Single Setup: Complete machining of curved profiles, cable channels, mounting flanges, and weight-reduction pockets in one clamping operation, eliminating re-fixturing and datum stack-up
Integrated Cable Routing: Internal channels machined directly into housing bodies eliminate external cable bundles prone to snagging, abrasion, and contamination
Hard Anodize Available: Type III hard coat provides 60-70 HRC surface hardness for high-cycle wear resistance without significant weight addition

Technical Specifications

Specification	Details
Product Name	Custom CNC Machined Aluminum 7075 Robotic Arm Joint Housing
Material Options	Aluminum 7075-T6, Aluminum 6061-T6, Aluminum 5052
Tolerance	±0.01mm (standard), ±0.005mm (bearing seats)
Surface Treatment	Hard Anodizing Type III, Black Anodizing, Nickel Plating, Shot Peening
Certifications	ISO 9001:2015, IATF 16949, RoHS, CE
Lead Time - Prototype	3-7 days
Lead Time - Production	7-15 days
MOQ	1 piece (prototype), 100+ (production)
Origin	Dongguan, China

Applications

Industrial Robotics: Pick-and-place joint housings, SCARA arm sections, articulated robot shoulder and elbow joints, material handling structural components
Welding Automation: Welding robot arm housings, torch mounting interfaces, wire feeder brackets, collaborative welding joint structures
Assembly Automation: Assembly line robot joints, precision placement arms, multi-axis system frames, screwdriver robot housings
Packaging Systems: Packaging robot arm joints, palletizer housings, box erecting structural components, food packaging frames
Semiconductor Equipment: Wafer handling robot joints, cleanroom-grade components, EMI-shielded anodized housings for electronics manufacturing
Laboratory Automation: Liquid handling robot joints, automated testing equipment frames, precision dispensing arm structures

Why Choose Sinbo Precision

20+ Years Experience: Established in 2003, machining robotic and automation components for global manufacturers across multiple product generations
5-Axis Capability: 50+ CNC machining centers including dedicated 5-axis machines for complex joint geometries and curved surfaces beyond 3-axis capabilities
Quality Control: CMM inspection on bearing seats, first article inspection with comprehensive reporting, concentricity and runout verification on all critical features
Fast Delivery: 3-7 days for prototypes, 7-15 days for production – meeting demanding automation development timelines
Factory-Direct Pricing: No distributor markup, with volume pricing structured for production ramp-up efficiency
One-Stop Service: DFM review, machining, surface treatment, sub-assembly (bearing press-fit, seal installation), and packaging under one roof

Manufacturing Process

DFM Review: Comprehensive analysis of joint geometry, bearing interface specifications, cable routing, and weight reduction opportunities – identifying potential production issues before machining begins
Material Selection: 7075-T6 standard for maximum strength, with 6061-T6 and 5052 alternatives for cost-sensitive applications where joint loads permit
5-Axis CNC Milling: Complete machining of complex joint geometry, curved profiles, precision bearing bores, cable channels, and mounting features in minimal setups
Quality Inspection: CMM measurement of bearing seats and mating surfaces, first article inspection, concentricity and runout verification
Surface Treatment: Hard anodizing for wear resistance, shot peening for fatigue life enhancement, nickel plating for bearing seat durability
Assembly & Delivery: Optional sub-assembly of bearing and seal components, protective packaging for precision surfaces, worldwide shipping

Frequently Asked Questions

What is your minimum order quantity?

1 piece for prototypes. Production MOQ is typically 100 pieces with volume pricing available at 500+ units.

What bearing bore tolerances can you achieve?

±0.005mm using precision boring operations. This achieves H7 tolerance class, compatible with standard precision bearings.

Can you machine the complete joint assembly?

Yes. We provide bearing press-fit, seal installation, and integrated cable connector assembly services for complete joint modules.

Do you provide material certificates?

Material test certificates (MTC) with full chemical composition verification are provided for all aluminum alloys.

What is the typical lead time?

Prototype: 3-7 days. Small batch: 7-15 days. Mass production: 15-25 days depending on complexity and surface treatment requirements.

Can you achieve hard anodizing for wear resistance?

Yes. Type III hard anodizing delivers surface hardness of Rockwell 60-70 HRC, standard for high-cycle robot joint applications.

태그:

Sinbo Precision Mechanical Co., Ltd.

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CNC (컴퓨터에 의한 수치제어) 기기 부품

CNC 회전하는 부분

CNC 밀링 부품

CNC 기계가공 업무

냉간 단조 부분

밀링부를 돌리는 CNC

CNC 알루미늄 부분

CNC 스테인레스강 부품

CNC 놋쇠로 만든 부분

CNC 스탬핑 부

플라스틱 부품 가공

벤딩 시트 금속 부분

새로운 에너지 자동차 부품

에너지 저장 연결기

컨택터 터미널

배터리 터미널 커넥터

CNC 제조 솔루션

제품 세부 정보

CNC (컴퓨터에 의한 수치제어) 기기 부품

CNC 회전하는 부분

CNC 밀링 부품

CNC 기계가공 업무

냉간 단조 부분

밀링부를 돌리는 CNC

CNC 알루미늄 부분

CNC 스테인레스강 부품

CNC 놋쇠로 만든 부분

CNC 스탬핑 부

플라스틱 부품 가공

벤딩 시트 금속 부분

새로운 에너지 자동차 부품

에너지 저장 연결기

컨택터 터미널

배터리 터미널 커넥터

CNC 제조 솔루션

Custom 7075-T6 Aluminum Robotic Arm Joint Housing with 5-Axis CNC Machining and Hard Anodizing for Precision Automation