A rapid sand casting mold manufacturing method based on sla prototype
A technology of sand casting and casting molds, which is applied in the field of rapid sand casting mold manufacturing, can solve the problems of not establishing a rapid sand casting process parameter library, and achieve the effects of saving manpower and material resources, shortening engineering time, and improving efficiency and accuracy
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Embodiment 1
[0040] The invention discloses a casting mold manufacturing process parameter correction method for rapid sand casting based on SLA prototype, which includes correcting casting line shrinkage ε and draft angle.
[0041] As a preferred mode, the linear shrinkage rate ε of the casting is according to the formula: ε =(1+ ε 合金 ) / (1- ε SLA树脂 ) for correction, where ε 合金 and ε SLA树脂 are the linear shrinkage rates of the alloy and SLA resin respectively, and the draft angle is increased by 45% on the basis of the value specified in the traditional process ("Casting Handbook (Volume 5, Casting Process)", Machinery Industry Press, 2003) %~97%.
[0042] As a preferred mode, the corrected casting linear shrinkage ε is shown in Table 1, and the corrected draft angle is shown in Table 2. A library of process parameters for different casting materials and sizes for rapid sand casting based on SLA prototypes was established.
Embodiment 2
[0044] Adopt the casting mold manufacturing process of the rapid sand mold casting based on SLA prototype described in the present invention to prepare casting mold, specifically comprise the following steps:
[0045] 1) Analyze parts. Analyze the shape and size of parts to obtain measurement data.
[0046] 2) Determine the mold making plan (pouring position, parting surface, quantity and arrangement of castings in the sand box, sand core design, outer mold design of castings).
[0047] 3) The process parameter is determined by the process parameter correction method described in the present invention. Set process parameters including machining allowance, casting line shrinkage, draft angle, non-processing wall thickness negative allowance, minimum wall thickness, minimum casting hole, reverse deformation, process correction amount and parting negative number, etc. The process parameters are set according to the regulations ("Casting Handbook (Volume 5, Casting Process)", Me...
Embodiment 3
[0055] Adopt the casting mold manufacturing process of the rapid sand mold casting based on SLA prototype described in the present invention to prepare casting mold, specifically comprise the following steps:
[0056] 1) Analyze parts. Analyze the shape and size of parts to obtain measurement data.
[0057] 2) Determine the mold making plan (pouring position, parting surface, quantity and arrangement of castings in the sand box, sand core design, outer mold design of castings).
[0058] 3) The process parameter is determined by the process parameter correction method described in the present invention. Set process parameters including machining allowance, casting line shrinkage, draft angle, non-processing wall thickness negative allowance, minimum wall thickness, minimum casting hole, reverse deformation, process correction amount and parting negative number, etc. The process parameters are set according to the provisions of the "Casting Handbook (Volume 5, Casting Process)...
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Abstract
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