Case Positioning Fixture for Assembly Modules

Product Specifications

Technical details and manufacturing context for Case Positioning Fixture

Definition

The Case Positioning Fixture is a critical component within the Primer Assembly and Insertion Module, 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. 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. Key parameters include clamping force (5–20 kN), positioning accuracy (±0.02 mm per ISO 230-2), repeatability (±0.01 mm per ISO 230-2), operating temperature (-10–60 °C), maximum load capacity (500–2000 kg), clamping stroke (10–50 mm), air supply pressure (0.4–0.8 MPa per ISO 8573-1), weight (50–150 kg), base plate dimensions (400×400–800×800 mm), material hardness (HRC 45–60 per ASTM E18), surface finish (Ra 0.8–1.6 μm per ISO 1302), and corrosion resistance (ISO 9227: 72 h). Materials on file include tool steel and aluminum alloy. These values are directory reference ranges and must be confirmed for the actual model and application. Always verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The fixture operates by engaging with the case's external features or surfaces using mechanical clamps, pneumatic actuators, or servo-driven mechanisms. It applies a controlled clamping force to hold the case securely, while precision alignment features ensure the case is positioned accurately relative to the module's coordinate system. This allows subsequent assembly tools to interact with the case's critical interfaces consistently. The fixture's design incorporates adjustable stops or guides to accommodate case size variations within the specified clamping stroke. The clamping force is regulated to prevent deformation or movement during machining or assembly, and the entire system is designed for repeatable positioning within tight tolerances.

Common Materials

Tool Steel, Aluminum Alloy

Technical Parameters

Parameter	Typical range	Notes & selection driver
Clamping Force	5–20 kN	Required to prevent case movement during machining
Positioning Accuracy	±0.02 mm	Ensures consistent assembly alignmentISO 230-2
Repeatability	±0.01 mm	Critical for batch productionISO 230-2
Operating Temperature	-10–60 °C	Outside range may affect seal integrity
Maximum Load Capacity	500–2000 kg	Must exceed workpiece weight with safety factor
Clamping Stroke	10–50 mm	Accommodates case size variations
Air Supply Pressure	0.4–0.8 MPa	Below 0.4 MPa clamping force insufficientISO 8573-1
Weight	50–150 kg	Affects portability and installation
Base Plate Dimensions	400×400–800×800 mm	Must fit machine worktable
Material Hardness	HRC 45–60 HRC	Ensures wear resistanceASTM E18
Surface Finish	Ra 0.8–1.6 μm	Affects corrosion resistance and frictionISO 1302
Corrosion Resistance	ISO 9227: 72 h	Minimum salt spray test durationISO 9227

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Base Plate Part
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 Part
Precision pin that engages with a hole or feature on the case to define its position.

Material: hardened steel

Applied To / Applications

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

Primer Assembly and Insertion Module

View system integration details

Manufacturers of Case Positioning Fixture

Manufacturer profiles associated with Case Positioning Fixture.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 6 September 2026

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Frequently Asked Questions

What is the primary function of a Case Positioning Fixture?

It securely clamps and accurately aligns a case or housing during assembly, ensuring proper orientation for subsequent operations like primer insertion.

What materials are commonly used for this fixture?

Tool steel and aluminum alloy are listed as materials on file, but confirm the specific material for your application with the supplier.

How is positioning accuracy verified?

Positioning accuracy is specified as ±0.02 mm per ISO 230-2. Verification should be performed using appropriate measurement methods and standards.

What is the recommended air supply pressure?

The air supply pressure range is 0.4–0.8 MPa per ISO 8573-1. Ensure your system provides this pressure for proper clamping force.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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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

Case Positioning Fixture

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards