English 
Product Description
| thing | describe |
| Design/Size | According to customer's drawings or samples |
| Material |
Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc. Stainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416 Steel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc. Alloy steel (15Cr, 20Cr, 42CrMo), etc. Brass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc. Copper, bronze, copper, etc. Titanium: TC4 (TiAl6v4, Grade f5) Plastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc. |
| process | CNC machining, turning, milling, stamping, turning, cutting, etc. |
| Delivery time | Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval. |
| Surface treatment | Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting |
| Test equipment | Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer. |
| Quality Management System |
ISO 9001:2015 ISO 13485:2016 |
| application | Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment. |
| File Format | Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS |
| Package | Inner plastic bag, outer standard carton, or as per customer's requirements |
| Shipping | Sea freight, air freight, international express (DHL, FedEx, TNT, UPS). |
| Serve | The professional foreign trade team provides enthusiastic and fast response services. Dimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing RoHS report/Salt spray test report/Hardness test report |
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Food-Grade Precision Machining Solutions: Custom Base Cup Link for Food Processing Lines
In modern high-speed packaging and food manufacturing industries, precision mechanical links must work in perfect harmony. As a premier non-standard custom precision machining factory, we deliver the secondary critical component of this heavy-duty mechanism to engineering teams worldwide. To fulfill your customized blueprints, we provide full-service food-grade precision machining to ensure seamless component integration on your lines.
Our non-standard custom Base Cup Links (Cooperating Joints) are custom-engineered to pair perfectly with their matching convex links, delivering synchronized, flawless motion on high-vibration food processing lines.
🛠️ Product Overview & Strategic Value
This component acts as the foundational structural link in automated food processing lines, pairing directly with the convex pivot to handle rapid, repetitive mechanical pivoting.
Why Material & Engineering Matter
Operating in close proximity to food products requires exceptional resistance against sanitation chemical washdowns (CIP processes). We utilize the exact same premium Martensitic Stainless Steel for this part, which undergoes rigorous vacuum heat treatment to ensure both components in the assembly maintain uniform wear resistance. Through our food-grade precision machining, this base link eliminates alignment binding and structural stress, ensuring optimal long-term reliability on multi-axis food processing lines.
⚙️ Manufacturing Process & Quality Control
Leveraging our dual capabilities in non-standard custom manufacturing and advanced food-grade precision machining, we manage every single critical variable from the rugged forged blank to the ultra-clean, functional finished component.
| Stage | Process Name | Description & Strategic Purpose |
| 1 | Precision Die Forging | We begin with a high-density, near-net-shape forged blank for non-standard custom processing. Just like its mating component, streamlined hot-die forging maximizes impact strength and high-frequency fatigue resistance. |
| 2 | Vacuum Heat Treatment | The forged blank undergoes a fully enclosed vacuum heat treatment (hardening + tempering) to elevate its overall mechanical strength without altering the surface elemental composition. |
| 3 | Sandblasting | Executed immediately after vacuum heat treatment. Uniform abrasive impact completely removes any microscopic oxide scales generated by high temperatures, exposing a clean stainless steel metallic substrate. |
| 4 | Multi-Axis CNC Milling | Continuous cutting is applied to multiple precise central through-holes, counterbores, and slots. This phase severely tests the relative positional accuracy of cross-regional bore systems, serving as a core stage that showcases our food-grade precision machining capabilities. |
| 5 | Deburring and Passivation | All parts are processed in automated finishing barrels for a comprehensive deburring and passivation cycle. The passivation solution reconstructs a high-concentration chromium-oxide protective shield on the smooth martensitic stainless steel surface, fundamentally solving the rust issue on food lines. |
🎯 Manufacturing Challenges & Our Solutions
1. Precision Fit & Transition Tolerance Control of Mating Bore Systems
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The Challenge: As a base component into which the first link inserts and nests, it not only shares the same dual-sided large main bores but also features an added precise transition-fit intermediate shaft bore. If two independently machined parts experience even a micrometer-level drift in center-to-center distance or position accuracy, it will cause severe single-sided wear or direct mechanical binding after assembly.
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Our Solution: Our engineering team applies a Unified Process Datum Alignment method. Utilizing custom-engineered pneumatic fixture combinations on our multi-axis CNC machining centers, the machining of the main bores and the micrometer-level mating bore is locked into a single coordinate system. Completing the finish machining of multiple holes in one single setup cycle completely eliminates accumulated positioning errors caused by re-clamping, ensuring a zero-binding, silk-smooth fit for these non-standard parts on food processing lines.
2. Micro-Burr Eradication in Complex Local Stepped Surfaces and Counterbores
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The Challenge: Compared to the previous link component, this part possesses more intricate grooves, internal counterbores, and stepped surfaces. These regions are highly prone to harboring hidden, tiny burrs and flash inside dead corners after multi-axis CNC cutting. If the deburring and passivation is incomplete and residual burrs break off during operation, it poses a severe hygienic risk to a high-speed production line.
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Our Solution: We deploy a dual-stage solution combining specialized Chemical-Mechanical Polishing (CMP) with extended barrel tumbling. First, prominent external burrs are removed via fine mechanical vibratory finishing; then, for internal counterbore dead angles, specialized fluid abrasives or targeted manual high-magnification microscope edge-shaving are utilized. Finally, a comprehensive deburring and passivation is conducted, ensuring that all internal blind holes and stepped faces reach mirror-like cleanliness, leaving zero hygienic blind spots.
❓ Frequently Asked Questions (FAQ)
Q1: Can this base cup link perfectly pair with the convex link you machined previously?
A: Absolutely. This is precisely our core advantage as a non-standard custom full-service factory. We possess full-system process planning capabilities. When both components are machined concurrently at our facility, our QA team utilizes custom gauges and go/no-go gauges to perform actual physical mock assembly testing, ensuring the entire assembly achieves a flawless matching tolerance before leaving the factory, eliminating any need for secondary field modifications on your end.
Q2: Will the surface corrosion resistance drop after vacuum heat treatment and sandblasting?
A: Quite the contrary. Our sandblasting process thoroughly eradicates microscopic oxides released during vacuum heat treatment. The subsequent, immediate deburring and passivation process catalyzes a dense, robust, chromium-rich protective layer on the freshly exposed metallic substrate. This passive film perfectly withstands harsh chemical washdowns and acid/alkali sanitizers common on food processing lines.
Q3: How do you ensure these non-standard parts with deep holes and inner grooves do not rust during international transit?
A: Upon completing the full deburring and passivation workflow and passing reinspection, we subject all complex non-standard parts with internal grooves and deep holes to thorough ultrasonic drying, ensuring zero moisture remains in any dead corners. Afterward, components are individually packed in VCI (Volatile Corrosion Inhibitor) bags and vacuum-sealed. This guarantees that the products remain in an absolutely dry, zero-oxidation, and dust-free environment throughout long ocean freight transits or warehouse storage.
📈 Optimize Your Line's Reliability with a Single-Source Expert
Maximize your machinery's lifespan with a single-source manufacturer. Leverage our advanced vacuum heat treatment, state-of-the-art multi-axis CNC cells, and reliable finishing capabilities to perfectly sync your automated mechanisms.
[Contact Our Engineering Team Today] Upload your complete set of assembly drawings for a confidential technical review and a highly competitive B2B quote within 24 hours.
TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp：+86 187 5714 8656
Website:https://www.cncliq.com/