Casting process for positioning by peripheral sand core positioning reference pieces and model thereof
A peripheral sand core and positioning reference technology, which is applied in the direction of casting molding equipment, casting molds, and casting mold components, can solve the problems of machining reference deviation, casting processing size deviation, and the specific position of the core cannot be determined, so as to ensure Position accuracy, the effect of ensuring machining accuracy
Active Publication Date: 2016-10-12
DALIAN JINHE CASTING
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Problems solved by technology
The lower end of the peripheral core is easy to locate, but the specific position of the core cannot be determined, and the outer side of the peripheral core is a scraping surface, and the size is not accurate. Now the processing is mainly based on CNC machining, and the rough surface in three directions is used as the processing reference for the shape. , often due to the inaccuracy of the peripheral core assembly, the machining reference offset will affect the machining size offset of the casting.
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[0017] The present invention is used in the casting process that is composed of cores around the mold, wherein the cores around the mold are called peripheral sand cores, such as Figure 6 When the casting shown is more complicated and very irregular, generally a large cavity is made with a model first, and then the prepared core (peripheral sand core) is placed close to the cavity wall, and then the final mold is formed. cavity.
[0018] The casting process adopts the positioning of the peripheral sand core positioning reference sheet, including mold making, molding, core making, mold fitting, pouring, sand shakeout, cleaning, shot blasting and rust prevention. During the mold making process, the model 5 is connected to the bottom plate 4, Several peripheral sand core positioning reference sheets 6 are inserted into the edge position where the model 5 contacts with the bottom plate 4 .
[0019] During the molding, the model 5 with some peripheral sand core positioning refere...
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The invention belongs to the field of casting, and in particular, relates to a casting process for positioning by peripheral sand core positioning reference pieces. The casting process comprises the steps of mold manufacturing, modeling, core manufacturing, mold closing, casting, shakeout, cleaning, shot blasting and rust prevention; and in the mold manufacturing process, a model is connected with a baseplate, and multiple peripheral sand core positioning reference pieces are arranged in the edge position, contacted with the baseplate, of the model. The casting process forms the periphery of a casting mold by cores, wherein the cores at the periphery of the casting mold are peripheral sand cores; and the method guarantees the position accuracy of the peripheral cores so as to guarantee the machining precision.
Description
technical field [0001] The invention belongs to the field of casting, and in particular relates to a casting process using peripheral sand core positioning reference sheets for positioning. Background technique [0002] When casting complex and very irregular castings, you will be faced with a plan to create a larger cavity with a model, and then put the prepared core (peripheral sand core) close to the cavity wall, and then form the final cavity. The lower end of the peripheral core is easy to locate, but the specific position of the core cannot be determined, and the outer side of the peripheral core is a scraping surface, and the size is not accurate. Now the processing is mainly based on CNC machining, and the rough surface in three directions is used as the processing reference for the shape. , Often due to the inaccurate peripheral core assembly, the machining reference shifts, which affects the machining size shift of the casting. Contents of the invention [0003]...
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IPC IPC(8): B22C9/10
CPCB22C9/108
Inventor 马广华于祥增寇长彬
Owner DALIAN JINHE CASTING