Precision Roller Mounting Bracket

Product Overview

• Structural Features: Asymmetric profiled structure integrating multiple shaft holes, threaded holes, and mounting reference surfaces. It enables precise roller shaft assembly, rigid connection to the main machine, and effective load transmission during operation.
• Applications: Widely used in automated production lines, precision machine tools, conveying equipment, industrial robots, and other fields as a critical load-bearing component for continuous and stable operation.
• Design Requirements: Emphasizes structural rigidity, dimensional consistency, and mating accuracy. It must maintain roller coaxiality and positional precision under long-term alternating loads to prevent vibration and uneven wear.

Core Manufacturing Process (Including Forging)

1. Forged Blank Preparation
   • High-strength alloy structural steel is formed using die forging or open die forging to pre-shape the basic contour of the bracket. This eliminates internal porosity and segregation, significantly improving overall fatigue resistance and load-bearing capacity.
   • Post-forging normalizing or quenching and tempering treatments refine grains and homogenize the material structure, providing a stable blank for subsequent machining while minimizing heat treatment distortion.
2. Rough Machining
   • A 5-axis machining center is used to rough machine the outer profile and main hole systems, removing most excess material and leaving uniform stock for finishing. This step also further relieves forging stresses.
3. Semi-Finishing
   • Semi-finishing is performed on reference surfaces, roller shaft mounting holes, and threaded pilot holes to correct rough machining distortions, unify datums, and ensure consistent stock for final finishing.
4. Finishing
   • High-precision grinding machines achieve tight dimensional and geometric tolerances for critical mating surfaces and roller shaft holes, guaranteeing rotational coaxiality.
   • CNC drilling and tapping centers precisely machine threaded holes to ensure the strength and accuracy of connections to the main machine.
   • 5-axis simultaneous machining completes profiled bevels and features, maintaining dimensional consistency and installation compatibility for complex geometries.
5. Surface Treatment & Inspection
   • Optional surface treatments (black oxide, phosphating, carburizing/nitriding) are applied based on customer operating conditions to enhance wear and corrosion resistance.
   • Final inspection is conducted using a coordinate measuring machine (CMM) to verify all dimensional and geometric tolerances, ensuring compliance with quality standards.

Key Manufacturing Challenges & Solutions

1. Forged Blank Precision & Microstructure Control

• Challenge: Complex profiled geometry can lead to insufficient filling, folding defects, or uneven grain structure during forging, affecting machinability and load-bearing performance.
• Solutions:
  • Adopt a pre-forging + finish forging multi-step process with optimized die flow channels to ensure uniform material filling and prevent folding or underfill.
  • Strictly control forging temperature and deformation rate, followed by heat treatment to refine grains and improve toughness and fatigue resistance.
  • Perform 100% non-destructive testing (UT/MT) post-forging to detect internal defects and ensure blank integrity.

2. Roller Shaft Hole & Multi-Datum Precision Control

• Challenge: Strict positional relationships between roller shaft mounting holes and main machine mounting surfaces can lead to cumulative errors from datum shifts, resulting in roller uneven wear, vibration, and reduced operational stability.
• Solutions:
  • Utilize single-setup 5-axis simultaneous machining to minimize clamping 次数 and eliminate datum deviation.
  • Establish a unified product coordinate system, linking all critical features (roller shaft holes, reference surfaces) to a core datum, enforced via CNC programming.
  • Integrate in-process inspection to real-time correct errors and maintain positional accuracy of key features.

3. Deep Hole & High-Precision Thread Machining

• Challenge: Deep internal holes and fine-pitch threads demand high coaxiality, low surface roughness, and precise thread form. Poor machining can cause deflection, excessive roughness, or faulty thread engagement.
• Solutions:
  • Employ peck drilling for deep holes with internal coolant tools to ensure straightness and surface quality.
  • Use high-precision forming taps and rigid tapping cycles, with CNC-controlled feed rates and torque to prevent thread chipping or stripping.
  • Conduct 100% inspection of threads using go/no-go gauges and optical measurement tools to ensure reliable connection.

4. Heat Treatment Distortion & Stress Relief

• Challenge: Complex residual stresses from forging and machining can cause distortion during heat treatment, leading to dimensional deviations in finished parts and loss of roller coaxiality.
• Solutions:
  • Implement stress-relief annealing after rough machining to eliminate residual stresses from forging and rough cutting, stabilizing the blank for finishing.
  • Apply low-temperature stress relieving prior to finishing to further relax residual stresses and prevent in-service distortion.
  • Adopt a symmetrical machining strategy to evenly remove material and minimize distortion tendencies after heat treatment.

5. Surface Quality & Wear Resistance

• Challenge: Critical mating surfaces require ultra-low roughness and high wear resistance to ensure long-term stability of the kinematic pair and avoid premature roller wear.
• Solutions:
  • Use mirror grinding and superfinishing during finishing to achieve extremely low surface roughness on critical mating surfaces.
  • Offer optional surface hardening treatments (carburizing/nitriding) to enhance surface hardness and wear resistance based on application needs.
  • Maintain a clean machining environment throughout production to prevent dents and scratches, ensuring final surface integrity.

Our Delivery Advantages

1. Integrated Forging & Precision Machining: Full in-house control from forging to finishing eliminates errors from external subcontracting, ensuring consistency in strength and precision.
2. Customization Capability: We optimize forging and machining processes to match specific roller specifications, load conditions, and installation spaces, delivering tailored solutions.
3. Quality Assurance: A full traceability system from raw material to finished product, supported by CMM, roughness testers, and NDT equipment, guarantees compliance with design specifications.
4. Efficient Delivery: Mature 5-axis machining and automated inspection workflows enable rapid delivery of small-batch, multi-variety orders to support project iteration.
5. Technical Support: Comprehensive services from forging process simulation and design optimization to on-site installation assistance, helping customers resolve operational challenges.

Value of Partnership

• A roller mounting bracket that combines high load-bearing strength and precision coaxiality, effectively preventing uneven wear and vibration to extend equipment service life.
• Professional forging and machining process optimization to enhance product performance and reduce production costs.
• Reliable delivery and after-sales support to ensure smooth project execution.

TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp：+86 187 5714 8656
Website:https://www.cncliq.com/