A deformation detection device suitable for pinholes and its detection method

Abstract

The invention discloses a deformation detection device and detection method suitable for a pinhole and belongs to the field of casting detection. According to the deformation detection device and detection method of the invention, components such as a detecting pin, a pin sleeve and detecting assemblies are adopted; the structure of each component is optimized; the axial movement of the detectingpin is detected, so that a detecting head of each detecting assembly is made to protrude outwardly to abut against the outer peripheral wall surface of the pinhole, and therefore, whether the pinholeis deformed can be judged on the basis of a reaction force fed back by the outer peripheral wall surface of the pinhole to the detecting pin, and the deformation detection of the pinhole is realized.The deformation detection device of the invention has the advantages of simple structure and simple and convenient assembly. The detection method is convenient to operate. With the deformation detecting device and detection method suitable for the pinhole adopted, the deformation detection of the pinhole of a casting can be effectively realized, whether a pinhole and a core pin are deformed can berapidly judged; the accuracy and convenience of the deformation detection of the pinhole can be improved; the cost of the deformation detection of the pinhole can be reduced; the efficiency of the deformation detection of the pinhole can be improved; it can be ensured that the deformation of the pinhole and core pin can be found in time; and the production of non-conforming products can be reduced. The deformation detection device and detection method suitable for the pinhole have a bright application prospect and high popularization and application value.

Description

technical field [0001] The invention belongs to the field of casting detection, and in particular relates to a deformation detection device suitable for pinholes and a detection method thereof. Background technique [0002] Die casting is a metal casting process, which uses the inner cavity of the mold to apply high pressure to the molten metal, and then obtain the corresponding products or parts. Because die-casting often has the advantages of high dimensional accuracy, fast production speed, and good product performance, it is widely used in the mass production of auto parts, aircraft parts and other products, and has good economic effects. [0003] In the casting process, it is often encountered that some castings need to process long pinholes, and the die-casting of the pinholes is often realized by means of core needles; however, due to the long-term cycle of work of the core needle, it may Deformation due to force, resulting in deformation of pinhole processing, affec...

AI Technical Summary

Problems solved by technology

[0004] In the existing technology, the deformation detection of pinholes is generally carried out by adopting three-coordinate measuring machine to pick points or visually inspecting the casting. Although the above methods can realize the deformation detection of pinholes to a certain extent, there are also certain defects defect

First of all, the method of cutting the castings for visual inspection cannot be effectively applied to the batch inspection of workpieces. The detection is difficult, the detection efficiency is low, and it will cause waste of materials, which is not conducive to the control of casting production costs. Moreover, manual visual inspection There are large human differences in detection methods, different judgment standards, and poor detection accuracy, which is not conducive to ensuring the consistency of batch casting product quality; It can meet the accuracy of pinhole deformation detection to a certain extent, but adopting this method will inevitably greatly increase the equipment cost of pinhole deformation detection. low, long casting production cycle and other defects; in addition, the three-coordinate measuring machine cannot effectively meet the deformation detection of the pinhole of the casting blank, because the precision of the casting blank is not high, and the roughness of the pinhole surface cannot be effectively guaranteed. There will be large errors in the detection of coordinate measuring machines, which will affect the accuracy of the detection results and cause false detection and false detection.

Therefore, for the deformation detection of pinholes, the existing methods have great limitations and cannot fully meet the needs of casting detection, which restricts the quality and efficiency of casting forming

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