Sensor shell and die-casting die and die-casting process thereof

Abstract

The invention relates to the technical field of sensor shell die-casting, in particular to a sensor shell and a die-casting die and a die-casting process thereof. Through a compensation method, when the sensor shell is designed, some recesses or inserts are made in a thick area of a casting product through manual design, the glue amount is reduced, the thick area tends to be balanced, the deformation amount is reduced, and the overall size precision is guaranteed; the risks of hot spots and shrinkage cavities generated in the die casting process are reduced by adding different structures, and it is guaranteed that the whole size of a casting is within the acceptability limit; meanwhile, a feeding nozzle is arranged on the side of a cavity and the side of a mold core, and the filling time sequence of the casting is controlled by adjusting the glue feeding position and controlling the glue feeding position and the glue feeding sequence, so that the product deformation is controlled, and it is guaranteed that the size of the casting is qualified; and die-casting and forming of the sensor shell are achieved by using the debugged proper casting pressure, time and other process parameters to ensure that the size of a casting is qualified.

Description

technical field [0001] The present application relates to the technical field of die-casting of sensor housings, in particular to a sensor housing, a die-casting mold and a die-casting process thereof. Background technique [0002] With the update of driving concepts, the status of driving safety and assisted driving has been paid more and more attention, and more and more intelligent products have been used in the field of automobile manufacturing. The complex traffic conditions in reality are well understood! Millimeter-wave radar has become an indispensable and important sensing element for smart driving cars because it can still provide reliable performance in various weather or light environments. [0003] The existing production process of millimeter-wave radar sensor housing castings is usually formed by die-casting and then processed by CNC to meet the requirements of high-precision dimensions. However, the problem with this production method is that the two-time fo...

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Problems solved by technology

[0004] At the same time, due to the inconsistent wall thickness of most of the existing sensor housings, the unreasonable structural design of the sensor housing will cause a high risk of thermal joints and shrinkage cavities in thick parts due to different solidification times during the solidification process. Further lead to the risk of unqualified all dimensional tolerances of the product; after die-casting, the internal pores of the product increase, the defect rate is high, and batch scrapping occurs, which greatly increases the production cost

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