Anti-deformation method for cutting thin-walled model of lost foam
A technology of lost foam and anti-deformation, which is applied in the direction of casting mold, core, casting mold composition, etc., to achieve the effects of reducing scrap rate, preventing deformation problems, improving processing accuracy and labor efficiency
Inactive Publication Date: 2017-01-04
BEIJING NAT INNOVATION INST OF LIGHTWEIGHT LTD
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Problems solved by technology
[0005] Aiming at the deformation problem existing in the cutting process of the current lost foam thin-walled model, the purpose of the present invention is to provide a method for cutting and preventing deformation of the lost foam thin-walled model
Method used
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Embodiment
[0017] Embodiment: use the lost foam thin-walled model that the present invention cuts, and the reinforcement rib material is selected as resin sand, and width is 20mm.
[0018] Step 1: Fix the lost foam white mold blank on the machine tool platform;
[0019] Step 2: cutting the inner side of the thin-walled model to obtain the internal shape of the lost foam thin-walled model;
[0020] Step 3: According to the height and inner shape of the thin-walled model, use a cutter to cut the resin sand block to obtain the required reinforcement;
[0021] Step 4: Bond the prepared ribs to the easily deformed part of the thin-walled model during cutting, and bond the outer surface of the ribs with the surface of the cut blank;
[0022] Step 5: After the ribs are bonded, cut the outer side of the lost foam thin-walled model;
[0023] Step 6: Obtain the final lost foam thin-walled model.
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The invention discloses an evanescent mold thin-wall model cutting anti-deformation method. The method comprises the following steps: fixing an evanescent mold workblank, cutting a white mold workblank to obtain an inner side shape of the thin-wall model; bonding a well-prepared reinforcing rib onto the surface of a cut surface, cutting the outer side of the workblank after the bonding is completed to finally obtain the evanescent mold thin-wall model. By adopting the method, the deformation problem of the evanescent mold thin-wall model in the cutting process can be prevented.
Description
technical field [0001] The invention belongs to the technical field of lost foam casting, and in particular relates to a method for preventing deformation during cutting of a thin-walled model of lost foam. Background technique [0002] The key issue in the lost foam casting technology is the production of the lost foam white mold model. At this stage, the production methods of lost foam models mainly include foam molding and cutting molding. Foam molding adopts a method of foaming polystyrene foam beads in a mold, which requires the production of molds, and the molding cycle is long, which is suitable for the production of large-scale castings; cutting molding uses a tool to directly cut out the lost foam The model is mainly suitable for the production of single-piece, small-batch and complex-shaped castings. [0003] CNC machine tool cutting lost foam model belongs to one of the methods of cutting forming. The forming process of this method is: using CAD software to est...
Claims
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IPC IPC(8): B22C7/02B22C9/04
Inventor 刘丰单忠德宋祥宇卢泽宇
Owner BEIJING NAT INNOVATION INST OF LIGHTWEIGHT LTD