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Non die-casting type digitalization fast manufacturing method

A manufacturing method and rapid technology, applied in the directions of casting molds, casting mold components, manufacturing tools, etc., can solve the problems of high product development cost, difficulty in cleaning sand, and high equipment cost, shortening the processing cycle, shortening the processing time, and saving raw materials. Effect

Active Publication Date: 2011-02-16
BEIJING NAT INNOVATION INST OF LIGHTWEIGHT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process is difficult to remove sand and requires special treatment procedures, which will affect the accuracy and surface quality of sand molds
[0010] In short, in the existing technology, for large-scale castings produced in small batches, the rapid prototyping-based non-pattern casting manufacturing technology has high equipment costs and high product development costs, which cannot meet the overall needs of customers

Method used

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  • Non die-casting type digitalization fast manufacturing method
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  • Non die-casting type digitalization fast manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: A 20×20×30 mm cubic mold cavity is manufactured by using the present invention.

[0033] (1) Utilize computer to establish a cube of 20×20×30mm;

[0034] (2) Determine the size of the sand blank according to the size of the part, and use the casting simulation software to establish the casting system plan, and determine that it is divided into upper and lower sand blanks without sand cores;

[0035] (3) The washed sand with the particle size of the original sand is 50 / 80 and 100 / 200 is mixed according to the ratio of 1:2, the amount of curing agent accounts for 50% of the resin, and the amount of resin added accounts for 1.5% of the washed sand. The mixed molding sand should be First add curing agent;

[0036] (4) According to the outline to be processed, the numerical control program is compiled, and the depth of the mold cut out is 15mm. The processing parameters are: the feed rate F is 100mm / min, and the rotating speed of the milling cutter is 640r / min...

Embodiment 2

[0041] Embodiment 2: A 60×60×40mm cuboid is manufactured by using the present invention, and a through hole with a diameter of 30mm is formed on the 60×60mm surface.

[0042] (1) Use 3D modeling software to build a cube of 60×60×40mm, and drill a through hole with a diameter of 30mm;

[0043] (2) Determine the size of the sand blank according to the size of the part, and establish the casting system plan in the casting simulation software, and determine that it is divided into upper and lower sand blanks, without sand cores;

[0044] (3) The ceramic powder with the particle size of the original sand is 30 / 50 and the washed sand of 50 / 80 are mixed according to the ratio of 3:1, the amount of curing agent accounts for 50% of the resin, and the amount of resin added accounts for 3% of the washed sand;

[0045] (4) According to the outline to be processed, the numerical control program is compiled. The processing parameters are that the feed rate F is 80mm / min, and the rotating spee...

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Abstract

The invention discloses a casting manufacturing method for general sand casting, which pertains to a digital-driven rapid manufacturing casting technology. The steps of the process are: the establishment of a model, the establishment of a casting system, the simulation of the casting process, the evaluation and the optimization; a molding sand with a certain proportion is mixed for preparation according to the requirements of the performance of a cast, thus preparing a sand billet; a procedure code is compiled according to the shape of a processing cavity, and the procedure code is input to asand numerical control machine tool; the cast and a core are processed; the cast is cleared and detected; the core setting and the assembly of the cast are carried out; and the casting is carried outto form the cast. The casting manufacturing method adopts the casting and the cutting machining technologies for organic combination, which is a new cast production method. The numerical control cutting technology is adopted for processing the complicated large cast directly, which can not only eliminate the chain for manufacturing the mold, but can also improve the processing precision of the cast, reduce the thickness of the cast, improve the rigidity and reduce the weight; furthermore, the method has the green advantages of saving materials and reducing energy consumption.

Description

technical field [0001] The invention relates to a casting mold manufacturing method for ordinary sand casting, in particular to a digitally driven rapid manufacturing casting mold method, which belongs to the technical fields of casting and numerical control cutting. Background technique [0002] Casting is one of the main methods to obtain mechanical product blanks, and is an important basic process in the machinery industry. The foundry industry is an important basic industry for the development of the national economy, the foundation of pillar industries such as automobiles, petrochemicals, steel, electric power, shipbuilding, textiles, and equipment manufacturing, and an important part of the manufacturing industry. An important part, the function of the mold is mainly forming, and its quality directly affects the performance of the final casting. With the globalization of the market and the intensification of competition, the speed of product replacement is acceleratin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/00
CPCY02P70/10
Inventor 单忠德战丽董晓丽
Owner BEIJING NAT INNOVATION INST OF LIGHTWEIGHT LTD
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