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Rapid manufacturing method for impression cylinder casting

A manufacturing method and embossing roller technology, which is applied in the manufacture of tools, casting molding equipment, casting molds, etc., can solve the problems of time and labor consumption of outer molds and core boxes, high production costs, and long production cycles, so as to shorten production Cycle, production cycle shortened, the effect of accurate size

Inactive Publication Date: 2021-08-31
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional manufacturing process takes a long time, low efficiency, and poor quality. The main time and labor are spent on the production of outer molds and core boxes. Although the production of roller castings can be completed, the production cycle is long and the production cost is high. Fast Launch products to meet equipment R & D and design

Method used

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  • Rapid manufacturing method for impression cylinder casting
  • Rapid manufacturing method for impression cylinder casting
  • Rapid manufacturing method for impression cylinder casting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 1. According to the external dimension of the casting is Φ809×842mm and the drawing, the three-dimensional model of the casting is obtained, such as figure 2 shown.

[0046] 2. Determine the parts that can be rapidly formed according to the casting structure, and divide the parts into three parts, and number them as 1#, 2#, and 3#.

[0047] 3. Through the UG software Boolean operation, reverse the core entity to obtain the three-dimensional model of the cavity, and obtain the original structure and three-dimensional solid model of the 1#, 2#, and 3# block cores, and improve the core head according to the process 3D design.

[0048] 4. According to the size of the core, apply an appropriate margin to make a cuboid sand blank. The size and quantity of the sand blank are shown in Table 1, and the technical parameters of the sand blank are shown in Table 2;

[0049] Table 1 The original size and quantity of sand blanks

[0050]

[0051] Table 2 Technical parameters o...

Embodiment 2

[0064] Qualified samples are quickly produced by using the non-pattern casting process based on CNC machining. Combined with the actual production situation of the impression cylinder, see Table 3 and Table 4 for the comparison of the manufacturing cycle and manufacturing cost between the moldless casting process based on CNC machining technology and the traditional casting process.

[0065] Table 3 Single casting manufacturing cycle

[0066]

[0067] Table 4 Single casting manufacturing cost

[0068]

[0069] It can be seen from the table that when producing a single piece, compared with the traditional casting process, the moldless casting process based on numerical control processing technology saves 35,000 yuan in cost and shortens the production cycle by about 47 days for a single person. The manufacturing cost and production cycle are mainly saved due to the adoption of casting mold manufacturing technology based on CNC machining, and the rest of the links are not...

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Abstract

The invention provides a rapid manufacturing method for an impression cylinder casting. The method comprises the following steps of determining parts capable of being rapidly formed, and performing partition numbering on the parts capable of being rapidly formed; reversely solving a mold core entity according to a three-dimensional model diagram of the casting to obtain a cavity three-dimensional model, respectively solving a three-dimensional model of a mold core of each numbered partition part, and manufacturing a sand blank of each part; adopting a manner that main body structures of sand cores are sequentially machined firstly, and then local structures of the sand cores are finely machined, and machining sand blanks on all the parts till all the sand cores are formed; and performing casting mold cavity sand box molding in a segmented manner, enabling all sand cores to fall into a mold cavity in sequence for mold closing, and then performing molten metal pouring through a raining pouring system till the casting is formed. According to the rapid manufacturing method, the mold core can be directly formed without manufacturing a core box, so that the production period can be shortened, the production cost can be reduced, and casting manufacturing can be rapidly completed.

Description

technical field [0001] The invention relates to the technical field of metal casting, in particular to a rapid manufacturing method for stamping cylinder castings. Background technique [0002] Roller castings generally refer to castings whose main structure is a cylinder with a cavity. The manufacturing process steps of traditional drum castings are: add process margin according to technical requirements → make outer mold and core box → form outer mold to form cavity of casting → core box to form internal structure of drum → mold forming → pouring → cleaning and grinding. The traditional manufacturing process takes a long time, low efficiency, and poor quality. The main time and labor are spent on the production of outer molds and core boxes. Although the production of roller castings can be completed, the production cycle is long and the production cost is high. Fast Launch products to meet equipment R & D and design. Contents of the invention [0003] The purpose of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/02B22C9/08B22C9/10B22C9/24B22C21/02B22D15/02
CPCB22C9/02B22C9/088B22C9/10B22C9/24B22C21/02B22D15/02
Inventor 杨爱成颜银标
Owner NANJING UNIV OF SCI & TECH
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