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Automotive Checking Fixture
An automotive checking fixture is a precision tool used in the automotive industry to inspect and verify the dimensional accuracy, quality, and assembly of automotive components. It ensures parts meet design specifications and tight tolerances before production or assembly. Checking fixtures play a critical role in maintaining quality control for parts like body panels, trims, bumpers, dashboards, and other automotive components.
Production Details
Design and Development:
- CAD Modeling: A 3D design is created based on the part’s geometry and customer requirements.
- GD&T Standards: Fixtures are designed to accommodate Geometric Dimensioning and Tolerancing requirements.
Manufacturing Process:
- Material Selection: Depending on application, lightweight aluminum or steel is commonly used.
- Machining: CNC milling, turning, and grinding ensure the fixture’s accuracy and precision.
- Assembly: Components like clamps, pins, gauges, and measurement points are installed to match part tolerances.
- Testing and Calibration: Fixtures are tested to ensure they can accurately verify part dimensions and functionality.
Fixture Types:
- Attribute Checking Fixture: Verifies if the part meets basic “go/no-go” dimensional checks.
- Variable Gauging Fixture: Measures specific points and provides numeric measurements for analysis.
- Assembly Fixture: Ensures proper alignment and assembly of multiple parts.
- CMM Fixture: Used with Coordinate Measuring Machines to inspect parts with high precision.
Materials
- Aluminum: Lightweight, easy to machine, and corrosion-resistant. Suitable for fixtures requiring mobility.
- Steel: High strength and durability, ideal for long-term production use.
- Tooling Boards: Cost-effective for low-volume fixtures or prototypes.
- Composites: Used for lightweight yet durable applications.
Applications
- Body Panels: Ensures dimensional accuracy of doors, hoods, fenders, and trunks.
- Interior Components: Verifies dashboards, trims, consoles, and panels.
- Exterior Components: Checks bumpers, grilles, and spoilers.
- Structural Parts: Inspects chassis components and structural brackets.
- Assembly Lines: Fixtures assist in ensuring alignment and assembly accuracy of multiple components.
Features
- High Precision: Ensures tight tolerances to maintain quality in automotive parts.
- Customizable Design: Tailored to specific components and customer requirements.
- Durability: Built to withstand continuous use in production environments.
- Portability: Lightweight fixtures can be moved for use across multiple stations.
- Ease of Use: Equipped with clamps, pins, and visual markers for efficient inspections.
- .Dongguan Ruixin Precision Mold Company specializes in manufacturing high-quality injection mold components, including Mold Cavities, Mold Sliders, Mold Inserts, Mold Lifters, Guide Bushings, and more. With years of expertise, we deliver precision-engineered solutions tailored to meet the demands of modern industrial and manufacturing applications. Our commitment to quality, innovation, and customer satisfaction ensures that every component we produce enhances efficiency and product performance. Trusted by clients worldwide, we pride ourselves on reliability and attention to detail, making us a preferred partner in the precision mold industry
China CNC Precision Machining Factory
- At RUIXIN Precision Mold Company, we understand that every project has unique quality requirements. That’s why we offer a range of inspection services to ensure your parts meet the highest standards of precision and performance. Our inspection services can be tailored to your project’s needs—giving you the flexibility and confidence you deserve.
- Our Inspection Services:
1.Standard Inspection
2. Standard Inspection with Dimensional Report
3. CMM Inspection with Dimensional Report
4. First Article Inspection Report (per AS9102)
5.Source Inspection
6.Additive Part Inspections - Custom Inspection
If your project demands specific inspection requirements, we’ve got you covered. Our Custom Inspection option allows for additional services such as: - Non-destructive testing
Serialization
Custom sampling plans
Use of your provided inspection datasheets
At RUIXIN, your quality standards are our priority. We’re committed to delivering accurate, reliable inspection results that align with your project requirements.
What is the purpose of an automotive checking fixture?
What types of parts require checking fixtures?
How accurate are automotive checking fixtures?
What materials are used to manufacture checking fixtures?
Can checking fixtures accommodate different vehicle models?
Advantages and Challenges of CNC Machining
CNC milling and turning are highly accurate and repeatable processes. Tight tolerances between +/-0.001″ – 0.005″ can be achieved, depending on specifications. Machines can be programmed to reliably run for 24 hours, 7 days a week if necessary, so CNC milling is a good way of getting parts produced on demand.
Using standard tooling, a CNC machining service is particularly valuable for creating one-off parts, custom CNC parts, i.e., for replacing legacy components or delivering a specialized upgrade to a customer. It is also conceivable to scale single-part production to runs exceeding 10,000 units. Depending on the unit number, size, and complexity, the turnaround for CNC machined parts can be as short as one day. With shipping and delivery, deadlines can be met within a week.
One trade-off when taking advantage of the high performance of CNC machining processes is that geometric complexity comes at a cost. Simple, chunky parts are the best designs for CNC milling and turning. There will always be some design limitations due to tool access, although the degree of this effect is relative to the number of axes on the machine. In other words, the more axes used, the more complex the features can be achieved.
Another trade-off is that start-up CNC machining costs can be expensive. It is necessary to have a trained professional perform the setup, tool loading, and programming on CNC mills and lathes. Luckily this cost is fixed, so by taking advantage of the same setup for multiple parts, it becomes more economical. Saving money is also achieved by keeping part repositioning to a minimum. Machining at 5-axis and above can sometimes be more economical on multi-faceted geometries because it eliminates the need to manually reposition the part.
