Industry-Verified Manufacturing Data (2026)

Case Positioning Fixture

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Case Positioning Fixture used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

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

A specialized fixture designed to precisely hold and position a case or housing during assembly operations.

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Product Specifications

Technical details and manufacturing context for Case Positioning Fixture

Definition
A critical component within the Primer Assembly and Insertion Module, the Case Positioning Fixture is responsible for securely clamping and accurately aligning a case or housing component to ensure proper orientation and location for subsequent assembly steps, such as primer insertion or component attachment. It provides the necessary stability and repeatability required for automated or manual assembly processes.
Working Principle
The fixture typically employs mechanical clamps, pneumatic actuators, or servo-driven mechanisms to engage with specific features or surfaces of the case. It holds the case in a predefined, fixed position relative to the module's coordinate system, ensuring that the case's critical interfaces (e.g., openings for primers) are correctly presented to other tools or robots within the assembly station.
Common Materials
Tool Steel, Aluminum Alloy
Technical Parameters
  • Positioning accuracy and repeatability of the fixture. (mm) Standard Spec
Components / BOM
  • Base Plate
    Provides the foundational mounting surface and reference plane for the fixture.
    Material: steel
  • Clamping Arm
    Actuated arm that moves to engage and secure the case against locators.
    Material: steel
  • Locating Pin
    Precision pin that engages with a hole or feature on the case to define its position.
    Material: hardened steel
Engineering Reasoning
0.01-0.05 mm positioning tolerance, 0-150 N clamping force, -20°C to 80°C operating temperature
Positioning error exceeding 0.1 mm, clamping force exceeding 200 N causing plastic deformation, temperature exceeding 100°C causing thermal expansion beyond compensation range
Design Rationale: Thermal expansion coefficient mismatch (steel fixture vs. aluminum case: α=11×10⁻⁶/°C vs. 23×10⁻⁶/°C) causing positional drift, Hertzian contact stress exceeding yield strength (σ_y=250 MPa) at clamping interfaces, wear-induced clearance accumulation beyond kinematic constraint limits
Risk Mitigation (FMEA)
Trigger Thermal gradient of 50°C across fixture structure
Mode: Positional drift of 0.08 mm due to differential thermal expansion
Strategy: Invar alloy (α=1.2×10⁻⁶/°C) critical components, active thermal compensation with Peltier elements and RTD feedback
Trigger Vibration at 120 Hz resonance frequency with 0.5 g acceleration
Mode: Clamping force relaxation due to fretting wear at contact surfaces
Strategy: Anti-resonance mounting with 40 Hz natural frequency isolators, diamond-like carbon coating (HV=3000) on clamping surfaces

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Case Positioning Fixture.

precision case positioning fixture tool steel clamping fixture aluminum alloy housing fixture machinery assembly positioning tool case holding fixture for manufacturing

Applied To / Applications

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

Primer Assembly and Insertion Module
View system integration details

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: N/A (mechanical fixture, no fluid pressure)
other spec: Max Load Capacity: 50 kg, Positioning Accuracy: ±0.05 mm, Vibration Tolerance: <5 g RMS
temperature: -20°C to 80°C
Media Compatibility
✓ Aluminum Housings ✓ Plastic Enclosures ✓ Stamped Steel Cases
Unsuitable: High-corrosive chemical environments (e.g., acid baths)
Sizing Data Required
  • Case Dimensions (LxWxH)
  • Weight of Case/Assembly
  • Required Clamping Force

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Wear and misalignment
Cause: Repeated clamping cycles and abrasive particles causing dimensional inaccuracies and loss of positioning precision
Hydraulic/pneumatic system failure
Cause: Seal degradation, fluid contamination, or pressure loss leading to insufficient clamping force
Maintenance Indicators
  • Visible misalignment or workpiece slippage during operation
  • Unusual hissing sounds (pneumatic) or fluid leaks (hydraulic) from the fixture
Engineering Tips
  • Implement regular calibration checks and preventive cleaning to remove debris from clamping surfaces
  • Use filtered air/hydraulic fluid and monitor pressure gauges to maintain optimal system performance

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality management systems ANSI B5.54 - Machine tool components - Workholding devices DIN 6325 - Cylindrical pins with internal thread
Manufacturing Precision
  • Bore diameter: +/-0.01mm
  • Parallelism of mounting surfaces: 0.02mm
Quality Inspection
  • Coordinate Measuring Machine (CMM) dimensional verification
  • Surface roughness measurement per ISO 4287

Factories Producing Case Positioning Fixture

Verified manufacturers with capability to produce this product in China

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✓ 96% Supplier Capability Match Found

S Sourcing Manager from Australia Jan 20, 2026
★★★★★
"The technical documentation for this Case Positioning Fixture is very thorough, especially regarding technical reliability."
Technical Specifications Verified
P Procurement Specialist from Singapore Jan 17, 2026
★★★★☆
"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the Case Positioning Fixture so far. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
T Technical Director from Germany Jan 14, 2026
★★★★★
"Testing the Case Positioning 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.”

19 sourcing managers are analyzing this specification now. Last inquiry for Case Positioning Fixture from Poland (1h ago).

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Frequently Asked Questions

What materials are used in this case positioning fixture?

This fixture is constructed from durable tool steel for structural components and lightweight aluminum alloy for moving parts, providing both strength and precision.

How does this fixture improve assembly operations?

The fixture precisely holds and positions cases or housings during assembly, reducing human error, increasing consistency, and speeding up production cycles.

What industries commonly use this type of positioning fixture?

This fixture is essential in machinery and equipment manufacturing, particularly for assembling engines, gearboxes, pumps, and other mechanical housings requiring precise alignment.

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 Machinery and Equipment Manufacturing sector.

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