CN1019756B - Mold body modelling method - Google Patents
Mold body modelling methodInfo
- Publication number
- CN1019756B CN1019756B CN88105593A CN88105593A CN1019756B CN 1019756 B CN1019756 B CN 1019756B CN 88105593 A CN88105593 A CN 88105593A CN 88105593 A CN88105593 A CN 88105593A CN 1019756 B CN1019756 B CN 1019756B
- Authority
- CN
- China
- Prior art keywords
- micro unit
- type body
- moulding
- moulding mixture
- micro
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
The invention belongs to formative technology, the formative method of type body.Known formative method must and be rebuild or renovate or cut or more technology such as extruding could moulding through molding, and operation is many, complex process, and the complicated type body of difficult system shape more is unfavorable for improving automated procedures.This method is with the type body material and the material of filling a vacancy, and is pressed into the minimum micro unit of size, at moulding mixture micro unit surface coating adhesive.With two kinds of specific being disposed in order of micro unit, make all moulding mixture micro units be combined into required type body, through the compacting bonding closely, remove filler again.Reduced proper motion technology is convenient to the computer control moulding, improves automaticity, boosts productivity.
Description
The invention belongs to formative technology, the forming method of various type bodies such as casting mold.
The formative method of known type body can divide three classes: (1) first processing mold, with mould moulding mixture is rebuild or renovate formed body again, as casting mold etc.; (2) mechanical or manual cutting, ponder moulding such as moulding mixture operation.(3) with the extruding of plasticity moulding mixture, roll forming.Generally all need several procedures, consume more equipment, material, artificial, time etc., the type body of more difficult appearance shape complexity, the difficult automaticity that improves.
The object of the invention is the moulding mixture micro unit made with type body material to be arranged to required type body, removes above-mentioned various manufacturing procedures from.
The present invention quotes the approximate principle of geometry: a geometrical body can be with extremely approximate approximate a replacement of body that is combined into by a large amount of enough little micro units, as long as both areas (or volume) difference is enough little in many occasions.The present invention is applied to Mold body modelling method, and micro unit is combined into a required type body.This method is combined by the following step.
This method is pressed into small-sized moulding mixture micro unit and filler micro unit respectively with the type body material and the material of filling a vacancy earlier, and its volume is generally at least less than type body volume 1/10th.General type body material can directly be made micro unit.If flour sand shape material (as molding sand etc.) then need be admixed a spot of corresponding binding agent equably, be pressed into micro unit.Should look operating process such as helping compacting, layout, and type surface quality requirement is selected the micro unit shape and size.The geometrical body of simple shape such as the optional cube of shape, cuboid, polyhedron, curved body, size is often got more than 0.05 millimeter.For a type body, generally all select the moulding mixture micro unit of same shape and size and filler micro unit to make up.
Constitute a large amount of micro units of same type body and function, each micro unit shape and size can be inequality, because often the micro unit of several difformities and size also can closely be combined into a required type body.
Secondly, when making final combination forming body, micro unit is bonded to firm type body mutually solidly, must make before layout on the moulding mixture micro unit surface and attach binding agent.Unless admixed binding agent as flour sand shape moulding mixture, generally there are enough cohesive forces on the micro unit surface of compacting; Not so at micro unit surface dipping bath or the very thin layer binder of spraying.Material as binding agent is a lot, needs only toughness, does not make the moulding mixture micro unit be out of shape all available of obvious chemical reaction with moulding mixture.Common clay, glue, paste, resin etc.
Its three, arrange moulding mixture micro unit and filler micro unit.Space in a case that is used as molding box, with moulding mixture micro unit one by one, the filler micro unit is respectively in an orderly manner with separately designated state (direction etc.) one by one, be arranged in assigned address separately in the case, arrange together until making the moulding mixture micro unit, and fill out when moulding mixture micro unit structure formed body, in the molding box or in the inner cavity that forms of type body.Micro unit all is that the basic order of placement of same shape and size is along the case feather edge in a kind of molding box, side by side arranges slivering earlier, is being close to second again ..., finally become one meagre body, be layering on it, until specified altitude assignment.
The mechanism that has arranges in order to be more convenient for, and can remove to constitute a type body with the same material micro unit of different shape and size.At this moment, order of placement is just answered corresponding establishment, thereby, make several micro units closely be arranged in assigned address without interfering with each other, constitute a type body.General order of placement is by the program decision of input computer, and this programs and has considered each micro unit shape and size and the position that will arrange, determines correct order of placement.
When this method is arranged, must fill most of cavity of the cavity that the moulding mixture micro unit reserved when the combination forming body with the filler micro unit.Because, make each infinitesimal physical efficiency that support is arranged, must be laminated on down on one deck.Yet the moulding mixture micro unit of type body internal cavity top area can only be stacked on the filler micro unit that fills up cavity substantially.The filler micro unit fills up the cavity of type body inside and molding box inside substantially.Selected filler must be not and moulding mixture, binding agent generation chemical reaction, finally can separate substantially with the type body.It is in place that institute's cloth filler amount should help all micro units to arrange on request.
Its four, arrange the type body of moulding, during pre-profiling, because of the moulding mixture micro unit leaves the very little gap of causing when arranging each other, at this moment the type body does not also have bonding closely.Thereby, every arranged several layers after, before taking advantage of binding agent and not parching, compress reality equably with a proper method.Final a densification, solid, firm type body.After the compacting, originally the microgap between the micro unit disappears, and makes type body overall shape and dimensional variations, and minimum change is generally only arranged.Debulking methods can with very evenly apply on it static pressure or surge, outlier surface on all four pressing plate (plane pressing plate or curved surface pressing plate) in exert pressure face and the molding box, or vibration or mechanical system such as the centrifugal method of exerting pressure.Mainly be to make the even compacting of all moulding mixture micro units, in order to avoid dislocation, slump between the micro unit in the case, so that damage type body.Pressure generally can be taken at 1.0 * 10
4～1.0 * 10
7N/M
2
At last, remove filler.Fill out the filler of type external body mainly with knock, vibrate, peel off, shovel from etc. mechanical system remove.Fill out filler at the type intracoelomic cavity, main removal method is: default earial drainage duct (or utilizing cast gate) in the type body, fusing, gasification, dissolving filler, become the physics or the chemical method of gas or liquid with filler generation chemical reaction, from runner, discharge filler, and do not damage the type body.
This method can make required solid, firm type body with above-mentioned steps.
In sum, basic, the most most crucial feature that can summarize this method is that the type body material and the material of filling a vacancy are made very little one by one moulding mixture micro unit and filler micro unit respectively, each is arranged in certain space separately assigned address with separately assigned direction with two kinds of micro units, make the moulding mixture micro unit form required type body, the filler micro unit is filled up in the cavity of type inside and outside.
Advantage and good effect: compare with the known type mold body modelling method, the present invention does not need special mfg. moulding die, turns over molding body, does not need more process meanses such as special equipment extruding, rolling cutting yet, and expends respective material, equipment, artificial, time etc.Only change the micro unit position, just can get the type body of required shape and size.Particularly for single and mini-batch production, and the complicated type body of shape have outstanding convenient.Reduced proper motion technology is convenient to computer control, and this method can improve the versatility of mo(u)lding equipment, can improve automaticity.Improve Forming Quality.
Embodiment: make a casting die cavity, die cavity is the about D=50 millimeter of diameter, length L=70 millimeter, approximate circle cylinder.As shown in the figure.Filler paraffin; Moulding mixture is the molding sand that quartz sand, bentonite etc. mix, and admixes 1～5% glue again.Be pressed into the moulding mixture micro unit and the filler micro unit of 1 * 1 * 1 mm cube body respectively.Molding box is 300 * 110 * 80 millimeters (1).Each moulding mixture (molding sand) micro unit is arranged in diagram position separately, becomes casting mold, in proper order: single → slice → sake → casting mold (3).The paraffin micro unit fills up die cavity and dead head (2).Exposing behind 20 layers of micro unit of every layout is a plane, long by=300, wide 110 millimeters with a rectangular planes pressing plate, with 3.0 * 10
6N/M
2The pressure compacting.Micro unit among the figure (4)
Claims (1)
- A kind of formative method of using unit of the group combination forming body of type body material system, it is characterized in that the type body material and the material of filling a vacancy are made very little one by one moulding mixture micro unit and filler micro unit respectively, each is arranged in certain space separately assigned address with separately assigned direction with two kinds of micro units, make the moulding mixture micro unit form required type body, the filler micro unit is filled up in the cavity of type inside and outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88105593A CN1019756B (en) | 1988-10-10 | 1988-10-10 | Mold body modelling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88105593A CN1019756B (en) | 1988-10-10 | 1988-10-10 | Mold body modelling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1041896A CN1041896A (en) | 1990-05-09 |
| CN1019756B true CN1019756B (en) | 1992-12-30 |
Family
ID=4833772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88105593A Expired CN1019756B (en) | 1988-10-10 | 1988-10-10 | Mold body modelling method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1019756B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042188C (en) * | 1994-12-28 | 1999-02-24 | 华中农业大学 | Hybrid seeding method of high-yield, high-quality and wild cabbage type rape |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106862484B (en) * | 2017-04-17 | 2019-02-22 | 山东豪迈机械科技股份有限公司 | A kind of device, method and casting mould for processing casting mould |
-
1988
- 1988-10-10 CN CN88105593A patent/CN1019756B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042188C (en) * | 1994-12-28 | 1999-02-24 | 华中农业大学 | Hybrid seeding method of high-yield, high-quality and wild cabbage type rape |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1041896A (en) | 1990-05-09 |
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| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |