Riser design method of automobile motor end cover and its casting mold

A technology of motor end cover and design method, which is applied in computer-aided design, manufacturing tools, casting and molding equipment, etc., can solve the problems of shrinkage porosity, inconvenient operation of riser parts, low processing efficiency, etc., and achieves simple and clear design ideas. The process is simple and efficient, and the effect of mold preparation is convenient

Active Publication Date: 2021-09-21
NINGBO QUANLI MACHINERY MOLD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Gravity casting includes sand casting, metal casting, investment casting, lost foam casting, etc. Among them, the whole process of sand core casting is relatively complicated, resulting in low processing efficiency. It is necessary to use the method of darkening the riser in the middle, but the riser designed according to the traditional casting process design theory does not sufficiently feed the hot joint of the casting, so it is easy to cause shrinkage inside the casting due to insufficient feeding. Pores, shrinkage; or there will be inconvenient operation on the riser, which makes the paint on it always incomplete, affecting the overall appearance of the casting

Method used

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  • Riser design method of automobile motor end cover and its casting mold
  • Riser design method of automobile motor end cover and its casting mold
  • Riser design method of automobile motor end cover and its casting mold

Examples

Experimental program
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Effect test

Embodiment 1

[0060]A riser design method for an automobile motor end cover, comprising the following steps:

[0061] (1) Apply UG-3D software section analysis to find out the heat joint, which is located in the middle of the casting;

[0062] (2) The thermal junction is equivalent to a cylindrical structure, and the size of the thermal junction is determined: radius R 1 30mm, height H 1 50mm;

[0063] (3) Calculate the volume V of the thermal junction 1 =π×R 1 2 ×H 1 =3.14×30 2 ×50=141300mm 2 , to calculate the mass M of the thermal junction 1 =ρ 1 ×V 1 , where ρ 1 is the density of thermal nodes, V 1 is the volume of thermal junction, where ρ 1 =2700kg / m 3 , namely M 1 =ρ 1 ×π×R 1 2 ×H 1 , Substitute the above data into the formula to get M 1 =0.382kg.

[0064] (4) Introducing M 2 =2M 1 Calculation formula to calculate the mass M of the riser 2 =a×ρ 1 ×π×R 1 2 ×H 1 , that is, M 2 =0.764kg.

[0065] (5) Calculate the volume V of the riser 2 = M 2 / ρ 2 , whe...

Embodiment 2

[0068] A riser design method for the end cover of an automobile motor is the same as that in Embodiment 1, except that the mass of the thermal joint in step (4) is M 1 , the mass of the riser is M 2 , and M 2 =0.5M 1 .

Embodiment 3

[0070] A riser design method for the end cover of an automobile motor is the same as that in Embodiment 1, except that the mass of the thermal joint in step (4) is M 1 , the mass of the riser is M 2 , and M 2 = M 1 .

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Abstract

This application discloses a riser design method for the end cover of an automobile motor, which includes the following steps: S1, applying simulation software to analyze and find out the hot joint of the casting, the hot joint is located in the middle of the casting, S2, making the hot joint equivalent to a cylinder structure, and determine the size of the thermal junction: radius R 1 , with height H 1 , S3, calculate the mass M of the thermal junction 1 =ρ 1 ×V 1 , where ρ 1 is the density of thermal nodes, V 1 is the volume of the thermal junction, S4, according to M 2 =a M 1 Calculate the formula to calculate the mass M of the riser 2 , S5, design the riser as a cylindrical structure, and determine the radius of the riser as R 2 , where R 2 less than R 1 , R 2 =bR 1 , S6, calculate the height H of the riser 2 The size of the riser in this application is calculated and optimized based on the three-dimensional simulation process. Using the riser under this size to feed the casting, the casting can be fully fed and the pass rate of the product is improved.

Description

technical field [0001] The present application relates to the technical field of gravity casting, in particular to a method for designing a riser of a gravity casting automobile motor end cover and a casting mold thereof. Background technique [0002] Gravity casting refers to the process in which molten metal is poured into the mold under the action of the gravity of the earth, also known as gravity casting. Gravity casting includes sand casting, metal casting, investment casting, lost foam casting, etc. Among them, the whole process of sand core casting is relatively complicated, resulting in low processing efficiency. It is necessary to use the method of darkening the riser in the middle, but the riser designed according to the traditional casting process design theory does not sufficiently feed the hot joint of the casting, so it is easy to cause shrinkage inside the casting due to insufficient feeding. Pores, shrinkage; or there will be inconvenient operation of the ri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/17G06F30/20B22C9/08B22C9/22B22D15/00G06F119/08
CPCB22C9/088B22C9/22B22D15/00G06F30/17G06F30/20G06F2119/08
Inventor 王庆林陈行全贺贤栋
Owner NINGBO QUANLI MACHINERY MOLD
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