CN105057753B

CN105057753B - Special-shaped aviation thin-walled parts Cold-forming process

Info

Publication number: CN105057753B
Application number: CN201510495004.6A
Authority: CN
Inventors: 石强; 邓斌胜
Original assignee: Chengdu Yuanxiang Aviation New Material Technology Co Ltd
Current assignee: Chengdu Yuanxiang Aviation New Material Technology Co Ltd
Priority date: 2015-08-13
Filing date: 2015-08-13
Publication date: 2018-04-27
Anticipated expiration: 2035-08-13
Also published as: CN105057753A

Abstract

The invention discloses special-shaped aviation thin-walled parts Cold-forming process, it comprises the following steps：Blank is processed into the part blank being made of the thin-wall part that thickness is 6mm and the process area that thin-wall part at least side has；Installation lastblock is removably secured on the inside of the web of thin-wall part to be used to prevent the support plate shaken during thin-wall part milling；Milling Process is carried out to the thin-wall part for being not provided with support plate side, until the thickness of thin-wall part is at most equal to 3mm, and a circular through hole or a circular groove are formed at the center of web；Remove the process area to link together with thin-wall part；Remove the support plate being fixedly mounted on web and form finished product.

Description

Special-shaped aviation thin-walled parts Cold-forming process

Technical field

The present invention relates to thin-wall part processing technology, and in particular to a kind of abnormity aviation thin-walled parts Cold-forming process.

Background technology

It is known that the air resistance coefficient of aircraft is small, own wt will also have control, and intensity is sufficiently high, and multifrequency nature is determined Abnormity, the thin-wall construction of airplane component are determined.These thin-walled workpieces are in milling process, since cutter rotates cutting for generation Shear force can be such that thin-walled is shaken because of insufficient strength, and the part shaken repeatedly can injure part milling in the place that cutter passes through Cut, crossing to cut such as part means part rejection.

Generally it is processed at present using vacuum milling folder method with gypsum is filled out, vacuum milling folder method must be by ancillary equipment （Vacuumize machine）, fixture also wants Milling Process in itself, and is only used for processing corresponding part, it is seen that this method is of high cost, raw Produce cycle length, without versatility.

And it is that quenched good soft gypsum is sticked to the reprocessing after gypsum condensation of the behind of thin-wall part to prevent part to fill out gypsum Vibrations, gypsum are originally that powder composition long-time service can cause the precision of precise numerical control machine certain damage, it is impossible to sharp again Environment is also polluted with wasting.

The content of the invention

For the above-mentioned deficiency of the prior art, the present invention provides special-shaped aviation thin-walled parts Cold-forming process and reduces as solution Certainly there is the spent processing cost of vibrations in thin-wall part process.

In order to reach foregoing invention purpose, the technical solution adopted by the present invention is：

There is provided a kind of special-shaped aviation thin-walled parts Cold-forming process, it is characterised in that comprise the following steps：

Blank is processed into zero be made of the thin-wall part that thickness is 6mm and the process area that thin-wall part at least side has Part blank；

Installation lastblock is removably secured on the inside of the web of thin-wall part to be used to prevent from shaking during thin-wall part milling Support plate；

Milling Process is carried out to the thin-wall part for being not provided with support plate side, until the thickness of thin-wall part is at most equal to 3mm, and A circular through hole or a circular groove are formed at the center of web；

Remove the process area to link together with thin-wall part；

Remove the support plate being fixedly mounted on web and form finished product.

Beneficial effects of the present invention are：This programme on the inside of the web of thin-wall part by being removably secured one piece of branch of installation Fagging to provide a support force to web, occurs repeatedly to solve thin-wall part when cutter rotational shear removes thin-wall part margin Vibrations milling injured the problem of cutting；Only need to provide stress by one piece of support plate in whole milling process, it is not necessary to take out true The materials such as empty machine or gypsum prevent the vibrations of thin-wall part, thus greatly reduce being processed into for special-shaped thin wall aviation part This；The support plate of this programme can be repeatedly after removing utilization, there is no the waste of auxiliary work-piece, and also there is no the dirt of environment Dye.

Brief description of the drawings

Fig. 1 is the flow chart of special-shaped aviation thin-walled parts Cold-forming process.

Fig. 2 is the structure diagram that support plate is fixedly mounted on part blank.

Fig. 3 is structure diagram when not moving out support plate and process area after the completion of thin-wall part milling.

Wherein, 1, part blank；11st, thin-wall part；111st, web；112nd, circular through hole；12nd, process area；2nd, support plate.

Embodiment

The embodiment of the present invention is described below, in order to facilitate understanding by those skilled in the art this hair It is bright, it should be apparent that the invention is not restricted to the scope of embodiment, for those skilled in the art, As long as various change in the spirit and scope of the present invention that appended claim limits and determines, these changes are aobvious and easy See, all are using the innovation and creation of present inventive concept in the row of protection.

Below exemplified by the blank by a size for 294mm × 188mm × 54mm, to special-shaped aviation thin-walled parts cold working Method is described in detail.

With reference to figure 1, Fig. 1 shows the flow chart of special-shaped aviation thin-walled parts Cold-forming process.As shown in Figure 1, the abnormity Aviation thin-walled parts Cold-forming process specifically includes following steps：

Blank is processed into by the thin-wall part 11 that thickness is 6mm and 12 groups of the process area that at least side of thin-wall part 11 has Into part blank 1（As shown in Figure 2）.

Specifically, the one side milling of the blank of 294mm × 188mm × 54mm is formed into the deep chamber that a depth is 48mm, And to the deep further milling in intracavitary side, to form what is had by thickness as the L-shaped thin-wall part of 6mm and L-shaped thin-wall part at least side The part blank 1 that process area 12 forms.

Then, in the web 111 of thin-wall part 11（Surface area major part）Inner side is removably secured installation lastblock and uses In the support plate 2 for preventing from shaking during 11 milling of thin-wall part.

The support plate 2 is at least the square plate of 10mm for one piece of thickness, and the shape of support plate 2 can be with 111 following table of web The shape that face matches completely, support plate 2 can also select its surface area less than the surface area of web 111；If support plate 2 is selected When being less than the structure of the surface area of web 111 with its surface area, support plate 2 is needed installed in the middle position of web 111.

After being machined for the ease of thin-wall part 11, support plate 2 is rapidly removed from web 111, the one of the present invention In a embodiment, support plate 2 is fixed on web 111 by the mucigel set at its four angles.In production practices process In, for the ease of rapidly realizing the fixation of support plate 2 and taking-up, mucigel preferably selects AB glue.

Secondly, Milling Process is carried out to the thin-wall part 11 for being not provided with 2 side of support plate, until the thickness of thin-wall part 11 is at most etc. In 3mm, and a circular through hole 112 or a circular groove, at this time, the knot of semi-finished product are formed at the center of web 111 Structure may be referred to the structure that Fig. 3 shows to come.

Can first it be milled out herein on web 111 after circular through hole 112 or circular groove again to whole thin-wall part 11 Thickness carries out milling, first the thickness of whole thin-wall part 11 can also be carried out carrying out circular through hole 112 or circle again after milling Pocket Machining, the herein exchange of two milling actions do not form influence completely on the precision of whole thin-wall part 11.

, may if directly milling out circular through hole 112 on web 111 when above-mentioned thin-wall part 11 is finished The support plate 2 being fixed on web 111 can be damaged, in order to avoid damage support plate 2 only can also mill out one on web 111 A circular groove.But, herein the thickness of circular groove bottom wall should be less than final molding thin-wall part 11 thickness.

Secondly, the process area 12 to link together with thin-wall part 11 is removed；It can use the common pliers of pincers worker will herein Process area 12 removes.

Finally, the support plate 2 being fixedly mounted on web 111 is removed.

When being circular groove at the center of web 111, the support plate 2 being fixedly mounted on web 111 is removed afterwards also Side wall including removing circular groove bottom using pincers worker usual ways such as filing, scrapings.

In one embodiment of the invention, precise numerical control machine can be used to carry out milling to blank and thin-wall part 11 to add Work.

In conclusion this programme is removably secured one piece of support plate 2 of installation by the inner side of web 111 in thin-wall part 11 To provide a support force to web 111, occur to solve thin-wall part 11 when cutter rotational shear removes 11 margin of thin-wall part Vibrations milling repeatedly injured the problem of cutting.

Only need to provide stress by one piece of support plate 2 in whole milling process, it is not necessary to vacuumize machine or gypsum The vibrations of thin-wall part 11 are prevented Deng material, thus greatly reduce the processing cost of special-shaped thin wall aviation part.

The support plate 2 of this programme can be repeatedly after removing utilization, there is no the waste of auxiliary work-piece, also there is no ring The pollution in border.When being processed using this method to special-shaped Thin-walled Workpiece 11, it is found that when the thickness of thin-wall part 11 is less than 1mm When, thin-wall part 11 is still not in vibrations, also very good manipulation during milling.

Claims

1. special-shaped aviation thin-walled parts Cold-forming process, it is characterised in that comprise the following steps：

Blank is processed into the part being made of the thin-walled parts that thickness is 6mm and the process area that thin-walled parts at least side has Blank：The one side milling of the blank of 294mm × 188mm × 54mm is formed into the deep chamber that a depth is 48mm, and to deep intracavitary The further milling in side, to form the process area being had by thickness as the L-shaped thin-walled parts of 6mm and L-shaped thin-walled parts at least side The part blank of composition；

Installation lastblock is removably secured on the inside of the web of thin-walled parts to be used to prevent from shaking during thin-walled parts milling Support plate：Support plate is fixed on web by the mucigel set at its four angles, and the mucigel selects AB glue；

Milling Process is carried out to the thin-walled parts for being not provided with support plate side, until the thickness of thin-walled parts is at most equal to 3mm, and A circular groove is formed at the center of web, the thickness of the circular groove bottom wall is less than the thin-walled parts of final molding Thickness；

The process area to link together with thin-walled parts is removed using pliers；

Remove the support plate being fixedly mounted on web；

The side wall of the circular groove bottom is removed using filing or scraping；

The support plate is at least the square plate of 10mm for one piece of thickness, its surface area is less than the surface area of the web.

2. abnormity aviation thin-walled parts Cold-forming process according to claim 1, it is characterised in that using accurate digital control machine Bed carries out Milling Process to blank and thin-walled parts.