Checking Fixture
Checking fixtures play an important role in production and manufacturing, ensuring the quality of molds and components, meeting production requirements, reducing errors and defects, improving manufacturing efficiency, and reducing scrap rates.
Inspection Fixture Fundamentals
In the production of automotive components, an inspection fixture is a professional measuring fixture specifically used to detect a certain characteristic and several performance characteristics of a product. Due to different measurements of inspection fixtures, they can be divided into two types: qualitative checking fixture and quantitative checking fixture. The purpose of inspection fixtures is to assist technicians in identifying problems during the inspection of automotive components and promptly finding solutions.
The Technology of Inspection Fixture
In the modular design application of automotive inspection fixture, modules can be formed into a series of modules according to different size specifications, and the series of modules can then be parameterized. The same type of automotive inspection fixtures mainly have different external dimensions and tolerances, and their designs need to be redrawn and annotated, which not only wastes design time but also increases the labor of designers. Therefore, inspection fixture designs similar to this should implement parametric design.
The parameterized design of automotive inspection fixtures has the following advantages.
① Technicians adjust parameters appropriately based on the data in the database when designing the car inspection fixture scheme, and design the car inspection fixture according to the specified requirements. Technicians can establish a database using either the company’s internal general database or a market-oriented standard industry database, which is a module provided by a professional inspection fixture manufacturing company.
② Effectively improving production and reducing product design cycles.
③ The biggest advantage of parameterized design for automotive inspection fixtures is the effective improvement of the automation level of design, which promotes and supports innovative and rapid design of new products.
④ In the market environment of mass customization production and innovation requirements, this development trend is of particular significance for the survival, competition, and development of enterprises.
The standardization of automotive inspection fixture is a comprehensive technical and management task that greatly facilitates the use of automotive inspection fixtures. It is the foundation for specialized production, specialized manufacturing, and the adoption of modern technological equipment for automotive inspection fixtures. The automotive inspection fixture market has formed a standardized modular system, but more development and improvement are needed.
Components of Automotive Inspection Fixture
The structural components and working principles of automotive inspection fixtures are the same. There are many types of components in automotive inspection fixtures, and each automotive inspection fixture consists of six components, namely: inspection fixture information identification, moving device, functional device (clamping device, skeleton), measuring reference, basic component, and auxiliary device (fasteners, assemblies, and other components). The types of components in each inspection fixture are different, and the purposes of each component are also different. These inspection fixture components play their respective roles, and none of them are indispensable.
Identification of Inspection Fixture Information
The role of inspection fixture information identification is to identify the main source of information for automotive inspection fixtures. Mainly including the categories and models of automotive inspection fixtures.
Mobile Devices
The function of mobile devices is mainly used for moving and transporting automotive inspection fixtures, such as casters and lifting devices.
Auxiliary Devices
- Fasteners: Connecting or fastening components
- Combination component: a combination component used for specific functions such as guidance and support
- Other components: Auxiliary elements in automotive inspection fixtures
Functional Device
- Clamping Device: Ensure that the product is positioned and clamped in the correct position, clamp the product onto the car inspection fixture, and keep the product in place under other external forces.
- Detection Device: The detection device plays an important role in automotive inspection fixtures, and the accuracy of the detection device and the selection of measurement point positions directly affect the reliability of the measurement results.
- Positioning Device: The function of this device is to ensure the accurate installation of the product and to ensure the positioning accuracy, connection strength, and reliability of each component in the automotive inspection fixture.
Basic Components
Basic Base: Usually used as the assembly foundation for automotive inspection fixtures, it is the largest component in automotive inspection fixtures, connecting other components and parts to form a set of automotive inspection fixtures.
Skeleton: Skeleton mainly serves as a connecting and transitional element in automotive inspection fixtures, connecting structural units such as functional devices, auxiliary devices, and mobile devices with the base body.
Testing Standards
There are multiple types of testing standards in different automotive inspection fixtures. The purpose of the detection benchmark is to measure the accuracy of the planned measuring fixtures.
There are various types of automotive inspection fixtures, with different sizes and shapes. Due to different product testing elements, the positioning methods may sometimes vary. There are differences between different types of automotive inspection fixtures, and the goal is to achieve high-quality workpieces and improve production stability through automotive inspection fixtures.
Design Requirements for Inspection Fixture
The determination of the overall structural form is related to the selection of standard parts, manufacturing, and assembly, operation and maintenance, service life and economy, as well as the stability, safety, and reliability of production work. Therefore, structural design is the key to the design of automotive inspection fixtures and is a problem that must be solved before design.
Strong Structural Stability and Versatility
- The operation is safe and simple, and the components can be replaced promptly.
- Damaged components are easy to replace.
- The installation between parts should be accurate, reliable, and firm.
Simple Structure
- The structure of the automotive inspection fixture has a complete assembly positioning reference.
- The overall structure is simple.
- Easy to manufacture, with good processing performance.
- Choose the corresponding materials and process them on the equipment to minimize material consumption.
The overall design requirements for automotive inspection fixture are based on customer product needs, fully considering measurement methods, and the need for later maintenance and replacement of spare parts, which is of great help to the design of automotive inspection fixtures.
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