CN103537741B - A kind of Press Tools for Automobiles vanish mould for casting processing method - Google Patents

A kind of Press Tools for Automobiles vanish mould for casting processing method Download PDF

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Publication number
CN103537741B
CN103537741B CN201210245128.5A CN201210245128A CN103537741B CN 103537741 B CN103537741 B CN 103537741B CN 201210245128 A CN201210245128 A CN 201210245128A CN 103537741 B CN103537741 B CN 103537741B
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datum level
added
outline
workpiece
positioning element
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CN103537741A (en
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武伟刚
李树新
王存第
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Beiqi Foton Motor Co Ltd
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Beiqi Foton Motor Co Ltd
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Abstract

The invention provides a kind of Press Tools for Automobiles vanish mould for casting processing method, comprise the following steps: the first datum level of described workpiece to be added is fitted in machining tool surface, positioning element on described machining tool contacts with the outline close to described first datum level, is fixed described workpiece to be added; From described second datum level, Milling Machining is carried out to described workpiece to be added, and retain described workpiece to be added close to the part for being fixed with described positioning element on the outline of described second datum level; Second datum level of described workpiece to be added is fitted in machining tool surface, positioning element is fixed by the reservation outline part close to the second datum level; From described first datum level, Milling Machining is carried out to described workpiece to be added, by the outline mill off of described workpiece to be added close to the first datum level; Manual to remove close to the part for being fixed with positioning element on the outline of the second datum level.

Description

A kind of Press Tools for Automobiles vanish mould for casting processing method
Technical field
The present invention relates to mold machining technology field, particularly relate to a kind of Press Tools for Automobiles vanish mould for casting processing method.
Background technology
Lost foam casting (ExPendable Casting process, EPC) is a kind of cavityless casting technology.Specifically, be exactly without mould molding in casting process, but by numerical control machine tool, foam board piecemeal is made, bonding forms the true form needing workpiece, then adopts resin sand or water-glass sand to do back-up sand, this foam real type is carried out landfill, one or more tapping hole is left according to evaporative pattern size or shape, finally molten iron is injected from this plug hole, foam real type is melted, forms cast iron part after cooling.
Due to lost foam casting small investment, cost is few, reduces labour intensity, improve operating environment and realize foundry's cleaner production, development in recent years is rapid, in being specially adapted to, the single-piece of heavy castings, small lot batch manufacture, as the production of car panel die, bed piece etc.
But, the precision of workpiece to be cast and the machining accuracy of foam real type closely related, if occur incomplete in foam real type processing or surface is uneven, then can there is same problem in the workpiece cast out.Therefore, the machining accuracy improving foam real type is the important guarantee of casting workpiece precision.
In prior art, foam real type carries out two sides processing by numerically-controlled machine tool, specifically as depicted in figs. 1 and 2.Fig. 1 is for be fixed on lathe by foam board reverse side to be processed, and process tool, from top down-cutting, is processed foam board front; Fig. 2 is for be fixed on lathe by foam board front to be processed, and process tool, from top down-cutting, is processed foam board reverse side.As shown in Figure 1, during fixed foam sheet material reverse side, the alignment pin 3 on lathe is fixed by foam board outline 1, and because outline is regular shape, contact surface is comparatively large, and positioning stablity, front machining accuracy can ensure.When after the completion of processing of foam board front, form half foam real type 2, as Fig. 2 revolves turnback around X-axis, fix its front, because the outline part in foam board front is by mill off, alignment pin can only be fixed half foam real type 2 processed, its contact surface irregular (particularly to thin, long, the thin workpiece that automobile longitudinal girder class mould is such), alignment pin is fixing unstable, process part is caused to tremble, very easily dynamic alive, crudy cannot ensure easily to occur waste product, causes unnecessary loss; And feeding speed cannot normally cut, can only reach 30% of normal cutting speed, working (machining) efficiency is obviously affected.
Summary of the invention
The present invention program's object is: provide a kind of Press Tools for Automobiles vanish mould for casting processing method, by after mill off, cannot be stably fixed at the problem on lathe to solve foam board outline in prior art.
For this reason, the invention provides a kind of Press Tools for Automobiles vanish mould for casting processing method, the workpiece to be added be applied to comprising the first datum level and the second datum level is processed, and described first datum level and described second datum level are oppositely arranged, and the method comprises the following steps:
First datum level of described workpiece to be added is fitted in machining tool surface, and the positioning element on described machining tool contacts with the outline close to described first datum level, is fixed described workpiece to be added;
From described second datum level, Milling Machining is carried out to described workpiece to be added, and retain described workpiece to be added close to the part for being fixed with described positioning element on the outline of described second datum level;
Second datum level of described workpiece to be added is fitted in machining tool surface, positioning element is fixed by the reservation outline part close to the second datum level;
From described first datum level, Milling Machining is carried out to described workpiece to be added, by the outline mill off of described workpiece to be added close to the first datum level;
Remove close to the part for being fixed with positioning element on the outline of the second datum level.
Preferably, separate for the part be fixed with positioning element close on the outline of the second datum level of described reservation workpiece to be added.
Preferably, described reservation workpiece to be added is close to being interconnected for the part be fixed with positioning element on the outline of the second datum level.
Preferably, the end face of described positioning element is plane.
Preferably, described first datum level is parallel with described second datum level.
Preferably, described positioning element is alignment pin.
Compared with prior art, the present invention has the following advantages:
In the present invention, in foam board positive and negative process, not by complete for foam board outline mill off, but retain the outline part contacted with alignment pin, after two sides all processes, remove manual for reserve part.This improves the diel evaporative pattern drawbacks such as evaporative pattern difficult processing is fixed, efficiency is low that are elongated and ultra-thin class part, improve working (machining) efficiency, quality, improve the outward appearance of full mold, ensured personal safety.
Accompanying drawing explanation
Fig. 1 is that in prior art, reverse side fixes workpiece to be added and from the schematic diagram of front Milling Machining;
Fig. 2 is in prior art after reverse side processing, the schematic diagram in fixing workpiece front to be added;
Fig. 3 is a kind of Press Tools for Automobiles vanish mould for casting of the present invention processing method flow chart;
Fig. 4 is a kind of processing mode schematic diagram in the embodiment of the present invention.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward " etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
The invention provides a kind of Press Tools for Automobiles vanish mould for casting processing method, the workpiece to be added be applied to comprising the first datum level and the second datum level is processed, and described first datum level and described second datum level are oppositely arranged.This first datum level can be workpiece reverse side to be added of the prior art, and the second datum level can be workpiece front to be added of the prior art, and vice versa.In addition, conveniently situation first datum level and the second datum level almost parallel, but also can there is certain angle.The method as shown in Figure 3, comprises the following steps:
Step 101, is fitted in machining tool surface by the first datum level of described workpiece to be added, and the positioning element on described machining tool contacts with the outline close to described first datum level, is fixed described workpiece to be added.Wherein positioning element can be the conventional hardware such as alignment pin, and its end face is plane, to increase the contact area with workpiece to be added, improves stability.In addition, according to workpiece difformity to be added, can adjust quantity and the position of positioning element, such as, for slender piece (as shown in Figure 4), can respectively establish a positioning element at two ends, both sides respectively arrange at least three positioning elements.
Step 102, carries out Milling Machining from described second datum level to described workpiece to be added, and retains described workpiece to be added close to the part for being fixed with described positioning element on the outline of described second datum level.Positioning element position on lathe is fixed under normal circumstances, as long as in vertical machining tool surface direction, upwards doing extended line along positioning element, can determining on the outline of the second datum level at workpiece to be added " part 12 for being fixed with described positioning element ".Outline near the second datum level mentioned here, distinguish from the central plane that workpiece to be added is parallel with machining tool in principle, both between this central plane and the second datum level, be then that in fact this plane also can not at central plane near the second datum level.
In addition, can comprise multiple from described second datum level to the mode that described workpiece to be added carries out Milling Machining, such as shown in Fig. 4, " part 12 for being fixed with described positioning element " is retained, and " part 12 for being fixed with described positioning element " passage divides outline to be connected to each other, that is, during from the second datum level Milling Machining, not by unnecessary outline 11 mill off, but remain the outline of some tie points.Another kind of situation is: when Milling Machining, by unnecessary outline 11 mill off, only remain the outline 12 of some tie points.
Step 103, is fitted in machining tool surface by the second datum level of described workpiece to be added, and positioning element is fixed by the reservation outline part close to the second datum level.
Step 104, carries out Milling Machining from described first datum level to described workpiece to be added, by the outline mill off of described workpiece to be added close to the first datum level.
Step 105, manual removes close to the part for being fixed with positioning element on the outline of the second datum level.For the first situation, need whole remaining outline to remove; For the second situation, only the outline 12 remaining some tie points removes just passable by needs.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
The foregoing is only preferred embodiment of the present invention, be not used for limiting the scope of the invention; Protection scope of the present invention is limited by the claim in claims, and every according to inventing the equivalence change and amendment done, all within the protection domain of patent of the present invention.

Claims (6)

1. a Press Tools for Automobiles vanish mould for casting processing method, the workpiece to be added be applied to comprising the first datum level and the second datum level is processed, described first datum level and described second datum level are oppositely arranged, and it is characterized in that, the method comprises the following steps:
First datum level of described workpiece to be added is fitted in machining tool surface, and the positioning element on described machining tool contacts with the outline close to described first datum level, is fixed described workpiece to be added;
From described second datum level, Milling Machining is carried out to described workpiece to be added, and retain described workpiece to be added close to the part for being fixed with described positioning element on the outline of described second datum level;
Second datum level of described workpiece to be added is fitted in machining tool surface, positioning element is fixed by the reservation outline part close to the second datum level;
From described first datum level, Milling Machining is carried out to described workpiece to be added, by the outline mill off of described workpiece to be added close to the first datum level;
Remove close to the part for being fixed with positioning element on the outline of the second datum level.
2. Press Tools for Automobiles vanish mould for casting processing method as claimed in claim 1, is characterized in that, separate for the part be fixed with positioning element close on the outline of the second datum level of described reservation workpiece to be added.
3. Press Tools for Automobiles vanish mould for casting processing method as claimed in claim 1, is characterized in that, described reservation workpiece to be added is close to being interconnected for the part be fixed with positioning element on the outline of the second datum level.
4. Press Tools for Automobiles vanish mould for casting processing method as claimed in claim 1, it is characterized in that, the end face of described positioning element is plane.
5. Press Tools for Automobiles vanish mould for casting processing method as claimed in claim 1, it is characterized in that, described first datum level is parallel with described second datum level.
6. the Press Tools for Automobiles vanish mould for casting processing method according to any one of claim 1 to 5, is characterized in that, described positioning element is alignment pin.
CN201210245128.5A 2012-07-13 2012-07-13 A kind of Press Tools for Automobiles vanish mould for casting processing method Active CN103537741B (en)

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105710424B (en) * 2016-04-06 2017-11-28 哈尔滨飞机工业集团有限责任公司 A kind of flight simulation ice type foam block numerical-control processing method
CN109262791B (en) * 2018-11-23 2021-06-11 青岛宙庆工业设计有限公司 Double-sided processing method of blank
CN111069529A (en) * 2019-12-30 2020-04-28 安徽应流铸业有限公司 Non-mold machining method for small-contact-surface type lost foam model
CN111673150B (en) * 2020-05-06 2021-05-28 信义汽车玻璃(深圳)有限公司 Processing method of car window hardware
CN113333829B (en) * 2021-05-31 2023-03-14 重庆长安汽车股份有限公司 CNC machining method for automobile plastic part

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