Checking Fixture
Automotive checking fixture is a device used for detecting workpieces, whose function is to measure and evaluate the dimensional quality of parts. At the production site of the parts, online inspection of the parts is completed through automotive checking fixture.
Automotive fixture testing plays a significant role in the manufacturing industry, with its main function being to measure and evaluate the size, shape, and positional characteristics of parts in industrial production. Checking fixture has provided great assistance to the manufacturing industry. It can achieve online inspection of parts, helping technicians to inspect multiple parts of parts through visual inspection, measuring tables, or calipers.
Maintenance Methods for Automotive Fixture Testing
The maintenance and upkeep of automotive fixture testing are crucial for ensuring the accuracy and reliability of the tested products. Here are some common methods for maintaining and servicing automotive fixture testing.
- Usage: Follow the correct usage and operating procedures to avoid excessive or incorrect use of the measuring tool. Ensure that operators have the correct skills and knowledge to reduce the risk of errors and damage.
- Cleaning Measures: Avoid affecting the surface of automotive fixture testing, and operators should not use corrosive substances or strong acid-base cleaning agents. The operator regularly cleans the surface and internal components of the inspection tool, using appropriate cleaning agents and tools to ensure that there is no dust, oil stains, or other pollutant residue.
- Regular Inspection: Calibrate regularly according to the frequency and requirements of using automotive fixture testing. Calibration can be automated through external calibration service agencies or self-calibration according to the calibration standards provided by the manufacturer. Calibration can ensure the accuracy and reliability of the measuring tool.
- Safe Storage: Operators must place the automotive fixture testing in a safe location to prevent external factors from affecting the automotive fixture testing. Avoid stacking, collision, or being affected by external forces. Provide a secure storage location for fixture testing to prevent loss or damage.
- Protective Measures: After using the automotive checking fixture, technicians should properly store it and take appropriate protective measures to prevent dust from affecting the tool. For example, using dust covers, boxes, or packaging materials to prevent dust, collisions, or damage. Avoid placing the measuring tool in a damp, high-temperature, or corrosive gas environment to prevent damage.
- Maintenance Measures: For automotive fixture testing that involves moving parts, lubricants, or other vulnerable components, regular maintenance should be automated according to the manufacturer’s guidelines and requirements. For example, lubricating sliding surfaces, replacing worn parts, etc.
Standard Requirements for Automotive Fixture Testing
To ensure effective judgment of the quality of automotive parts and ensure that the quality of automotive parts meets the requirements, the first step is to correctly select positioning benchmarks, positioning methods, and positioning components based on product drawings. In special circumstances, reasonable positioning should also be automated according to the prescribed requirements to obtain a constant and accurate positioning reference, ensuring maximum repeatability and linearity. Equally important is to pay attention to the impact of other structures in the inspection tool on the detection function. The fixture testing must have sufficient rigidity, and attention should be paid to the strength and wear resistance of related components when using the fixture testing multiple times, which is beneficial for improving the service life of the fixture testing.
The standard design of fixture testing components has many stages, mainly including heat treatment, assembly, cutting production, blank production, etc. These stages are closely related. When designing the fixture structure, technicians must pay attention to comprehensive design, distinguish the role of each structure, and each different structure has different good structures and technical performance.
The fixture testing should meet the requirements of productivity, and the complexity of specialized fixture testing should be suitable for the production process. Various fast and efficient structures should be used as much as possible to ensure easy operation for technicians. Shortening manufacturing time helps improve productivity. It is necessary to appropriately improve the universality and standardization of fixture testing components, choose standardized components, especially commercial standard components, shorten the fixture testing manufacturing cycle, and reduce the time of operators.
Automobile fixture testing has the characteristic of good process performance, and the structure of the fixture testing should be as simple and reasonable as possible to facilitate production, assembly, adjustment, testing, and maintenance. The manufacturing of specialized measuring tools belongs to single-piece production. When ensuring final accuracy through adjustment or maintenance, a structure that is easy to adjust and maintain should be set on the instrument.
Good usability. The operation of specialized vehicle fixture testing should be simple, mainly including product selection and testing, fixture operation and handling, and have the advantages of labor-saving, safety, and reliability. When objective conditions permit and it is economically feasible, physical labor should be avoided as much as possible, and hydraulic-related mechanized clamping devices should be used to reduce the labor intensity of technicians.
Design Principles of Automotive Fixture Testing
The design of automotive fixture testing has the performance of rationality and high precision, mainly reflected in three aspects: the first is the appearance quality and dimensional stability of automotive fixture testing, and the second is the convenience and speed of processing and manufacturing; Another point is that the operation is not complicated (including product retrieval and testing, worker operation and handling), labor-saving, safe and reliable, and easy to maintain.
Under objective conditions and economic feasibility, mechanical devices such as pneumatic, electric, hydraulic, laser, and electromagnetic induction should be used as much as possible to reduce the labor intensity of operators and mitigate quality hazards caused by visual fatigue. The design principles of automotive fixture testing are the same as those of other machinery, and they must first meet the basic requirements of their job functions. The overall design of automotive fixture testing should be based on the principles of practicality, economy, aesthetics, and reliability.
Automobile fixture testing should not only ensure their performance but also meet the requirements of assembly technology. At the same time, they should strive for a simple, lightweight, and durable structure, with convenient and fast operation, and be easy to manufacture.
- Reliability Principle
Reliability refers to the ability of automotive fixture testing to complete the corresponding specified functions within their design life and given conditions. Reliability is divided into inherent reliability, operational reliability, and environmental adaptability. The measurement indicators of reliability generally include reliability, fault-free rate, and failure rate.
Automobile fixture testing must have installation reliability to ensure that all load-bearing components have sufficient strength, rigidity, and friction resistance during their service life. The operating position should be set in a location that is easily accessible to workers to ensure production safety. The following principles should be followed in the reliability design process of automotive fixture testing :
- In design, the principles and solutions designed by technicians need to be accurate and efficient. But before adopting new technologies, processes, and materials, experiments must be conducted and their impact on reliability must be rigorously demonstrated. For example, the application of foam automotive on fiber new material in automobile opening inspection tool was finally approved by automobile suppliers after experimental demonstration.
- Reliability design must run through all aspects of functional design while meeting basic functions, and comprehensively considering various factors that affect reliability. Such as the strength and stiffness of the parts, the stability of the structure, etc.
- For component failures, such as system, component, or electrical component failures or failures, the design should aim to eliminate or control the possible failure modes that may occur during the product’s lifecycle to the maximum extent possible.
- The complexity of automotive fixture testing should be adapted to the production schedule, and various fast and efficient mechanisms should be used as much as possible to ensure easy operation, shorten auxiliary time, and improve productivity.
- When designing the reliability of automotive fixture testing, various factors such as performance, reliability, cost, and time should be balanced to make the best design solution.
- Economic Principle
Technicians can efficiently design the design scheme, simplify the structure of automotive fixture testing, reduce production costs, shorten processing cycles, and also ensure the manufacturing progress of automotive fixture testing. Whenever possible, design universal automotive fixture testing, combination automotive fixture testing, or flexible automotive fixture testing that can be used for the assembly and testing of similar types of products without the need for adjustments or slight adjustments.
Conduct a comprehensive analysis of product testing content and then develop the optimal design plan for automotive fixture testing. When designing automotive fixture testing, it is necessary to appropriately improve the universality and standardization of automotive inspection components, select standardized components, especially commercial standard components, and make them organically combined with automotive inspection.
- Technical Principles
The technical principle refers to the ability of the designed automotive inspection tool to meet the assembly and testing requirements of the product.
- The structural design of automotive fixture testing should facilitate manufacturing, assembly, adjustment, testing, and maintenance. For example, the manufacturing of specialized automotive fixture testing belongs to single-piece production. When the final accuracy is ensured by adjustment or repair, structures that are easy to adjust and repair should be set on the automotive fixture testing, such as adjustment pads, inserts, etc.
- As high-precision equipment, automotive fixture testing has certain requirements for the production environment. Production workshops inevitably produce smoke, metal, or waste, which can damage the smooth working surface exposed on the automotive fixture testing. Important positioning surfaces such as slides, transmission mechanisms (such as gears, chains, bearings), electrical circuits, etc. should be covered and protected.
- Automotive fixture testing is generally composed of single or multiple components. Some automotive fixture testing has extremely complex structures and numerous operating sequences. Currently, many parts require manual inspection, and a certain amount of operating space should be reserved during design.
Automotive fixture testing can also be used to detect important parts and functional dimensions on components, as well as to check values when needed. In addition, automotive fixture testing can also be used as measuring brackets to provide support for parts. In the parts production industry, automotive furniture helps to ensure the high quality and precision of components, which greatly contributes to the production efficiency of workpieces.
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