Due to its importance for safety and performance, the quality control of EV battery enclosures requires strict standards. Scantech 3D scanners have proven to be an effective and accurate tool in meeting these requirements.
To address these limitations, 3D scanning technology, particularly the Simscan 3D Scantech series, has emerged as an advanced solution, offering the capability to collect precise and rapid data, thereby optimizing the entire process
The transition from ICE vehicles to EVs presents unique challenges due to the fundamental differences between the two power systems. Therefore, ensuring the high quality of battery systems is essential as manufacturers and suppliers accelerate their research, development, and engineering production for electric vehicles.
A checking fixture is similar to a gauge, except it can hold the part it is measuring. It can contain any number of measuring devices while holding the part to be checked
Checking fixture is a quality assurance tool used in industries to verify the quality of complex shaped parts. They are not used to create parts but rather to accept or reject parts that have been manufactured according to dimensional accuracy. Manufacturers seek the assistance of checking fixtures to examine the dimensional accuracy of their products. They also check parts for deformation, scratches, and verify if the parts are properly aligned. In summary, a checking fixture provides a certification that the product meets all requirements for safe operation.
As the name suggests, this is a fixed fixture consisting of a frame placed on the floor or a workbench, and the part to be checked is brought to it and mounted. Once the part is correctly positioned on the fixture frame, other measuring devices are used. These measuring parts may or may not be attached to the frame. Sometimes, the frame may have a structure to hold the part, and a series of inspection surfaces are placed at a distance from the part. A feeler gauge is inserted between the part and the inspection surface to confirm the correct shape of the part.
Apply-type checking fixtures work in complete contrast to standard types. These fixtures are placed on larger parts or assemblies and checked for the dimensional accuracy and profile of the parts. Some heavier parts, especially automotive parts, cannot be placed on a fixture. But companies cannot accept poor accuracy of any part that could damage the product and cost them thousands of dollars. Apply-type fixtures do the job in such situations. They are brought to the desired locations and placed on the parts to be measured to check for accuracy.
A Coordinate Measuring Machine (CMM) is a measuring device used to inspect the physical geometry of an object by sensing discrete points on the surface of the object or a part using a sensing probe. When the probe touches a surface, the transducer records the input and sends it as an electrical impulse to the computer.
The computer then interprets the signal and registers its location in space. The points are recorded in coordinates (X, Y, Z), where X, Y, Z are the distances of each point in the X, Y, and Z directions from the coordinate origin (0,0,0) using a Cartesian coordinate system. CMM fixtures are built to hold the work part in the exact position as in actual operation. A known point in space is located on the fixture or on the part to be checked, and the CMM is positioned relative to that point.
It starts inspecting other points on the workpiece to determine their locations. In this way, the dimensional accuracy and position of complex and intricate shaped parts or assemblies can be measured using CMM fixtures.
Although we have other fixtures to check all parts of a car, they are not suitable for checking a newly designed car or its prototype. Any single flaw can cause millions of dollars in damage and take a lot of time and effort to detect the flaw after the car is assembled. To avoid such a mistake, PIMM fixtures are used. These fixtures confirm whether all the sheet metal parts of an assembly fit together during the prototype stage. The PIMM fixture comes with a large frame, a series of locating elements to fit the panels, and clamps to hold the panels in place.
Each prototype panel is placed on its locating elements and positioned with clamps. This is repeated until a complete side of the car is virtually formed. All of them must fit the fixture accurately. Fit and gap are checked using feeler gauges, and any mismatches or flaws are inspected. If everything fits well, then the parts are within acceptable limits.
Coordinate Metal Match Inspection Fixtures are a combination of CMM fixtures and PIMM fixtures. Car body parts may have specific shapes, but after being welded together, they may become twisted. The CIMM fixture detects this and reports whether the twist is within acceptable limits.
All these fixtures work together to inspect a complete assembly of a product. A set of fixtures can be integrated into a single fixture, saving the time and cost of building additional fixtures. The combination of one or more fixtures can be used to check specific parts. In the case of automotive manufacturing, there are several operations involved in making individual parts, which are later assembled to form a complete car.
The accuracy of each of these operations must be checked to avoid deformation and damage. Welded assemblies can be checked using fixed checking fixtures. While sheet metal parts that have been formed are checked using CMM fixtures. A partially assembled car can have the accuracy of its trunk opening checked using an apply-type fixture, while a newly designed car can be checked using a Progressive Inspection Metal Match (PIMM) fixture when the part is still in the prototype stage.
Although both are widely used in the automotive industry, there is a slight difference between them. A BIW (Body in White) fixture is a production tool that holds three-dimensional parts together for welding. In the automotive industry, a checking fixture is used to inspect the final parts of sheet metal body components so that when all the parts of the car's undercarriage are placed in a BIW fixture, they are precisely positioned relative to each other.
FIXTURES/JIG will wear out over time and affect the performance as well as the final quality of the product. For high-value and high-risk manufacturing items, services that support performance assurance and maximize revenue are very important. V-Proud respectfully offers FIXTURES/JIG/ĐỒ GÁ measurement and inspection services, customers can ensure that their fixtures are always in the best condition, reducing the risk of production errors, improving product quality, and ultimately saving time and costs.
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