Precision Nut Tightening & Quality Inspection for Battery Case Assembly

    ✓Multi-product compatibility in one machine - ✓Torque accuracy within ±3% and max 0.1 N·m control precision - ✓Real-time OK or NG inspection and full traceability

Automate fastening, guarantee accuracy, and achieve zero-defect assembly with Openex's high-precision servo-controlled tightening system — engineered for the battery manufacturing industry.

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Openex Automation

Let Openex help you eliminate defective products and improve production efficiency. Whether you need a standalone inspection machine or a complete integrated solution with assembly and packaging — we're here to support your goals.

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Product Overview

The Nuts Tightening and Inspection Automation System from Openex is a high-precision, fully automated solution designed for the assembly and quality control of battery case top plates.
It performs automatic tightening of nuts while simultaneously checking torque accuracy, rotation parameters, and fastening quality, ensuring consistency, reliability, and traceability in large-scale battery manufacturing.
Built on our advanced servo-controlled tightening technology and integrated vision/torque inspection systems, this machine delivers unmatched precision for electric vehicle batteries, energy storage modules, and other battery pack applications.

nut tightening machine

Key Features

Multi-Product Compatibility

  • Handles different nut sizes, battery case designs, and product types in one machine without extensive changeover time.
    • Full Torque & Speed Control
  • Adjustable torque, rotation speed, waiting time, and rotation direction to meet various process requirements.
    • High Precision Servo Tightening
  • Torque Error: ≤ ±3%
  • Speed Error: ≤ ±3%
  • Torque Control Accuracy: max 0.1 N·m
  • Torque Range: 0.5 N·m to 5 N·m
    • Integrated OK/NG Inspection
  • Automatically detects and records whether each fastening meets torque and process requirements.
    • Traceability & Data Logging
  • All inspection results are recorded for quality tracking and production reporting.
    • Consistent Quality
  • Eliminates variations caused by manual tightening and ensures repeatable high-quality fastening.

    • nuts tightening machine inspection

    Technical Specifications

  • Speed: Up to 6 pcs/min
  • Torque Range: 0.5 N·m - 5 N·m
  • Torque Error: ≤ ±3%
  • Speed Error: ≤ ±3%
  • Torque Control Accuracy: max 0.1 N·m
  • Product Size Range: Multiple nut sizes and case dimensions
  • Inspection Function: Automatic OK/NG judgment with result recording
  • Control System: Servo motor + PLC control
  • Process Adjustments: Torque, speed, waiting time, rotation direction
    • nuts tightening

    Applications

    This system is ideal for:

  • Electric Vehicle Battery Assembly
  • Energy Storage Battery Modules
  • Industrial Battery Packs
  • Other precision fastening operations requiring torque verification

    • Why Choose Openex Nuts Tightening & Inspection Automation?

  • Zero-Defect Quality Control: Every fastening is verified in real-time.
  • Enhanced Productivity: Reduce manual labor and increase assembly throughput.
  • Multi-Model Flexibility: One system adapts to multiple battery designs.
  • Data-Driven Traceability: Detailed records for audits, warranty claims, and process improvement.
  • High ROI: Minimized rework, reduced errors, and longer product life.

    • Integration with Industrial Automation

    This tightening and inspection system can be seamlessly integrated into:

  • Automated battery assembly lines
  • Robotic handling and palletizing systems
  • AI-powered quality inspection workflows

    • Get a Tailored Solution

    Openex specializes in customized automation and vision inspection systems for the battery industry. Whether you need inline integration, robotic automation, or AI inspection, our engineers can design a solution to meet your exact requirements.
    📩 Contact us today to discuss your project and get a detailed proposal.