Industry-Verified Manufacturing Data (2026)

Clamping Fixture

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Clamping Fixture used in the Fabricated Metal Product Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Clamping Fixture is characterized by the integration of Base Plate and Clamping Arm. In industrial production environments, manufacturers listed on CNFX commonly emphasize Carbon Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A mechanical device used to securely hold and position workpieces during welding operations.

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Product Specifications

Technical details and manufacturing context for Clamping Fixture

Definition
A clamping fixture is an essential component of a welding station designed to firmly secure metal workpieces in precise positions during welding processes. It ensures proper alignment, prevents movement due to thermal expansion or welding forces, and maintains consistent positioning for repeatable weld quality. These fixtures typically incorporate adjustable clamps, locators, and supports to accommodate various workpiece geometries and welding requirements.
Working Principle
The clamping fixture operates by applying mechanical force through screw mechanisms, pneumatic cylinders, or hydraulic systems to hold workpieces against reference surfaces. It maintains positional stability during the welding process by resisting thermal distortion and vibration, ensuring accurate joint alignment and consistent weld bead placement.
Common Materials
Carbon Steel, Alloy Steel
Technical Parameters
  • Maximum workpiece dimensions (length × width × height) that the fixture can accommodate (mm) Standard Spec
Components / BOM
  • Base Plate
    Provides structural foundation and mounting surface for all fixture components
    Material: Steel
  • Clamping Arm
    Applies holding force to secure the workpiece in position
    Material: Alloy Steel
  • Locating Pin
    Ensures precise positioning and repeatable placement of workpieces
    Material: Hardened Steel
  • Clamping Mechanism
    Generates and transmits clamping force through mechanical, pneumatic, or hydraulic means
    Material: Steel
Engineering Reasoning
0.5-15 kN clamping force, 0.01-0.1 mm positional tolerance, -20°C to 150°C temperature range
Clamping force exceeds 18 kN causing permanent deformation, positional error exceeds 0.15 mm causing weld misalignment, temperature exceeds 200°C causing thermal expansion beyond design limits
Design Rationale: Yield strength of AISI 4140 steel (415 MPa) exceeded under excessive clamping force, thermal expansion coefficient mismatch (11.7 μm/m·°C for steel vs 23.1 μm/m·°C for aluminum) causing binding at high temperatures, Hertzian contact stress exceeding 1.5 GPa causing surface pitting
Risk Mitigation (FMEA)
Trigger Thermal cycling between -20°C and 150°C causing differential expansion
Mode: Clamping force reduction below 0.3 kN due to binding in sliding mechanisms
Strategy: Implement Invar alloy (1.2 μm/m·°C expansion) inserts in critical sliding interfaces
Trigger Vibration at 120 Hz resonance frequency from welding equipment
Mode: Positional drift exceeding 0.15 mm during continuous operation
Strategy: Add tuned mass dampers with 85% critical damping at 120 Hz natural frequency

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Clamping Fixture.

welding clamping fixture for metal fabrication carbon steel clamping fixture for welding heavy-duty clamping arm for workpiece positioning alloy steel base plate clamping device mechanical clamping mechanism for welding operations

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Welding Station
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Final Sealing Station
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Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Max clamping force: 5-50 kN (depending on model), workpiece pressure resistance: up to 100 MPa
other spec: Workpiece size range: 50-1000 mm, repeatability: ±0.05 mm, vibration tolerance: up to 5 g
temperature: -20°C to 200°C (operational), up to 500°C (short-term welding exposure)
Media Compatibility
✓ Carbon steel workpieces ✓ Stainless steel workpieces ✓ Aluminum alloy workpieces
Unsuitable: High-corrosion environments (e.g., salt spray, chemical baths) without protective coatings
Sizing Data Required
  • Workpiece dimensions and geometry
  • Required clamping force (based on welding process)
  • Welding process type and heat input

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Wear-induced slippage
Cause: Abrasive wear on clamping surfaces due to repeated contact with workpieces, leading to reduced friction and loss of clamping force
Fatigue fracture
Cause: Cyclic loading from repeated clamping/unclamping operations causing stress concentration at design features like threads or sharp corners, ultimately leading to crack propagation
Maintenance Indicators
  • Visible scoring or galling on clamping surfaces indicating excessive wear
  • Audible clicking or popping sounds during operation suggesting component looseness or impending fracture
Engineering Tips
  • Implement regular surface inspection and reconditioning of clamping faces to maintain optimal surface finish and friction characteristics
  • Apply controlled torque during assembly and periodic retorquing of fasteners to prevent stress relaxation while avoiding over-tightening that accelerates fatigue

Compliance & Manufacturing Standards

Reference Standards
ISO 2768-1: General tolerances for linear and angular dimensions ANSI B5.50: Machine Tools - Workholding Fixtures DIN 6325: Clamping Elements for Machine Tools
Manufacturing Precision
  • Bore diameter: +/-0.01mm
  • Parallelism of clamping surfaces: 0.05mm
Quality Inspection
  • Dimensional verification with CMM (Coordinate Measuring Machine)
  • Hardness testing (Rockwell C scale) for clamping components

Factories Producing Clamping Fixture

Verified manufacturers with capability to produce this product in China

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✓ 92% Supplier Capability Match Found

P Project Engineer from United States Jan 05, 2026
★★★★★
"The technical documentation for this Clamping Fixture is very thorough, especially regarding technical reliability."
Technical Specifications Verified
S Sourcing Manager from United Arab Emirates Jan 02, 2026
★★★★★
"Reliable performance in harsh Fabricated Metal Product Manufacturing environments. No issues with the Clamping Fixture so far."
Technical Specifications Verified
P Procurement Specialist from Australia Dec 30, 2025
★★★★★
"Testing the Clamping Fixture now; the technical reliability results are within 1% of the laboratory datasheet."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

18 sourcing managers are analyzing this specification now. Last inquiry for Clamping Fixture from Brazil (1h ago).

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Frequently Asked Questions

What materials are used in this clamping fixture?

This clamping fixture is constructed from either carbon steel or alloy steel, providing durability and strength for demanding metal fabrication environments.

How does the clamping mechanism secure workpieces during welding?

The clamping mechanism, combined with the base plate, clamping arm, and locating pin, creates a secure hold that prevents movement during welding operations, ensuring precise positioning and safety.

What industries commonly use this type of clamping fixture?

Primarily used in fabricated metal product manufacturing, this clamping fixture is essential for welding operations in automotive, construction, machinery, and other metalworking industries.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Fabricated Metal Product Manufacturing sector.

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