CN202824488U - Reverse extruding die - Google Patents
Reverse extruding die Download PDFInfo
- Publication number
- CN202824488U CN202824488U CN 201220382424 CN201220382424U CN202824488U CN 202824488 U CN202824488 U CN 202824488U CN 201220382424 CN201220382424 CN 201220382424 CN 201220382424 U CN201220382424 U CN 201220382424U CN 202824488 U CN202824488 U CN 202824488U
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- walled portion
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Abstract
The utility model provides a reverse extruding die which is characterized by comprising an upper punch, a lower die for forming a lower die cavity, a guide sleeve fixedly connected with the lower die, a positioning pin arranged in a key slot of the upper punch, and a positioning groove formed on the inner side of the guide sleeve and corresponding to the positioning pin. Compared with the prior art, the reverse extruding die has the advantages that by adopting the mode of key slot positioning, the guide sleeve is positioned to the lower die, and the key slot on the punch is positioned to the guide sleeve, so that the positioning of the lower die is realized. The positioning mode is simple, the structure of the mode is also simple, the positioning of the reverse extruding die is more accurate than that of a traditional module, and the reverse extruding die is convenient to operate.
Description
[technical field]
The utility model relates to metal precision forging field, particularly a kind of anti-extruding mold.
[background technology]
Tubular sliding sleeve class part shape is comparatively complicated, and profile is revolving body, and inner chamber is abnormity.Please refer to shown in Fig. 1 a, it is a kind of axial section of tubular sliding sleeve forging.Please refer to shown in Fig. 1 b, it is a kind of radial section figure of tubular sliding sleeve forging.This tubular sliding sleeve forging comprises tubular bar section 110 and the head 120 that links to each other with the cylinder end of tubular bar section.Tubular bar section 110 comprises thick wall part B and thin-walled portion C, and the outward flange of thick wall part B and thin-walled portion C forms cylinder, and inward flange forms special-shaped inner chamber.Described special-shaped inner chamber comprises interior raceway and inner cylinder, and interior raceway is connected by fillet A transition with inner cylinder.
Because higher to the inner chamber required precision, finish forge obtains no longer carrying out machined behind the tubular sliding sleeve forging, assembling is used after the direct quenching.In the forging process in order to guarantee the precision of inner chamber, the technique that adopts warm cold junction to close, at first warm forging forms blank, then to this blank cold-finish to form tubular sliding sleeve forging.
Please refer to shown in Fig. 2 a, it is the radial section figure of the blank that forms by warm forging technique in the prior art.The structural similarity of the shape and structure of this blank and the tubular sliding sleeve forging among Fig. 1, wherein S1 is the section shape of the thick wall part of blank, S2 is the section shape of the thin-walled portion of blank.Please refer to shown in Fig. 2 b, the radial section figure (namely consistent with figure shown in Fig. 1 b) of the tubular sliding sleeve forging that it obtains after for the blank cold-finish among Fig. 2 a wherein S3 is the section shape (being the S1 after the cold-finish) of the thick wall part of cylinder row sliding sleeve forging, and S4 is the section shape (being the S2 after the cold-finish) of the thin-walled portion of cylinder row sliding sleeve forging.
Because the deflection in the certain hour reflects its metal flow speed, the deflection of the cold-finish operation of expression front and back thick wall part and thin-walled portion is inconsistent in the accompanying drawing 2, (S1-S3)/S3＜(S2-S4)/S4, therefore, the speed of the thick wall part S1 of blank and thin-walled portion S2 metal flow is inconsistent in the cold-finish process, and the metal flow speed of thick wall part S1 is less than the metal flow speed of thin-walled portion S2.The fillet of raceway and inner cylinder is in the junction of thick wall part S1 and thin-walled portion S2 in connecting, because the metal flow velocity of variation at two places is inconsistent, therefore can undergo mutation in fillet place metal flow speed, thereby produce the Material Flow trapping phenomena at fillet A place, not foot phenomenon appears filling, produce hickie, form product defects, affect the assembling after Product Precision and the quenching.
Therefore, be necessary to propose a kind of improved technical scheme and solve the problems referred to above.
[utility model content]
The purpose of this utility model is to provide a kind of anti-extruding mold, and it is used for the blank that the warm forging operation forms is carried out cold-finish to obtain tubular sliding sleeve forging, and it realizes that mould location, school is more accurate, and convenient operation.
In order to address the above problem, the utility model proposes a kind of anti-extruding mold, the alignment pin in the fairlead that it comprises upper punch, forms the counterdie of lower mode cavity, be fixedly connected with counterdie, the keyway that is arranged at upper punch and be arranged at the fairlead inboard locating slot corresponding with alignment pin.
Further, using described anti-extruding mold to carry out the cold-finish operation comprises: the lower mode cavity of the blank of above-mentioned warm forging operation formation being put into described counterdie; Adjust upper punch and make that alignment pin can enter in the locating slot smoothly in its descending process; Upper punch continues descending the contact with blank and extrusion blank, utilize the anti-extruding mold metal filled bottom to bar section that the tubular bar section cylindrical of blank is unnecessary, so that the outside diameter of blank bar section reduces, length lengthens, to obtain meeting the tubular sliding sleeve forging of finished size.
Further, described blank comprises tubular bar section and the head that links to each other with the cylinder end of tubular bar section, the tubular bar section of described blank comprises thick wall part and thin-walled portion, the outward flange of thick wall part and thin-walled portion forms the cylinder that the bottom surface is abnormity, inward flange forms special-shaped inner chamber, described inner chamber comprises interior raceway and inner cylinder, interior raceway is connected by round-corner transition with inner cylinder, the excircle dimension that the excircle dimension that the outward flange of described thick wall part forms forms greater than the outward flange of described thin-walled portion, and greater than the excircle dimension of finished product.
Compared with prior art, the anti-extruding mold in the utility model adopts the mode of keyway location, utilizes fairlead and counterdie location, and keyway and fairlead on the recycling drift are located, and reach the location of drift and counterdie.This kind locate mode is simple, and mould structure is also simple, and is more more accurate than module location, school in the past, convenient operation.
[description of drawings]
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.Wherein:
Fig. 1 a is a kind of axial section of tubular sliding sleeve forging;
Fig. 1 b is a kind of radial section figure of tubular sliding sleeve forging;
Fig. 2 a is the radial section figure of the blank that forms by warm forging technique in the prior art;
Fig. 2 b is the radial section figure of the tubular sliding sleeve forging that obtains after the blank cold-finish among Fig. 2 a;
Fig. 3 is the forging method process chart in one embodiment of the utility model tubular sliding sleeve;
Fig. 4 a is the radial section figure of the blank that forms by warm forging technique in the utility model;
Fig. 4 b is the radial section figure of the tubular sliding sleeve forging that obtains after the blank cold-finish among Fig. 4 a; With
Fig. 5 is for carrying out the structural representation of the anti-extruding mold of cold-finish operation to the blank in the utility model.
[specific embodiment]
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Alleged " embodiment " or " embodiment " refer to be contained in special characteristic, structure or the characteristic at least one implementation of the utility model herein.Different local in this manual " in one embodiment " that occur not are all to refer to same embodiment, neither be independent or the embodiment mutually exclusive with other embodiment optionally.
The utility model is by changing former warm forging operation with the structure of the blank of change warm forging operation formation, namely the profile of blank is suitably revised, so that the excircle dimension that the outward flange of the thick wall part of described blank forms is greater than the excircle dimension of the outward flange formation of thin-walled portion, and the excircle dimension greater than finished product, the blank that warm forging technique is formed, when the cold-finish operation, can guarantee that material is full of mold cavity, the fillet that reaches the interior raceway of the tubular sliding sleeve forging that cold-finish obtains and inner cylinder is sufficient, thereby eliminates the phenomenon that produces hickie after the finishing.
Please refer to shown in Figure 3ly, it is the forging method process chart in one embodiment of the utility model tubular sliding sleeve.Described technological process comprises the steps.
Please refer to shown in Fig. 4 a, it is the radial section figure of the blank that forms by warm forging technique in the utility model.
Described blank comprises tubular bar section and the head that links to each other with the cylinder end of tubular bar section.The tubular bar section of described blank comprises thick wall part S1 ' (S1 ' also can refer to the radial section shape of thick wall part) and thin-walled portion S2 ' (S2 ' also can refer to the radial section shape of thin-walled portion), the outward flange of thick wall part S1 ' and thin-walled portion S2 ' forms the cylinder that the bottom surface is abnormity, and inward flange forms special-shaped inner chamber.Described inner chamber comprises interior raceway and inner cylinder, and interior raceway is connected by round-corner transition with inner cylinder.The excircle dimension that the outward flange of described thick wall part S1 ' forms is greater than the excircle dimension of the outward flange formation of described thin-walled portion S2 ', and the excircle dimension greater than finished product, and guarantee after described blank is carried out the cold-finish operation of following steps 320, so that the deformation quantity of thin-walled portion is consistent with the deformation quantity of thick wall part.
The blank that described warm forging is formed carries out cold-finish, so that the outside diameter of blank reduces, length lengthens, to obtain meeting the tubular sliding sleeve forging of finished size.
Because the excircle dimension of described blank is greater than the excircle dimension of finished product, therefore, in one embodiment, the mould that carries out the cold-finish shaping is indirect-extrusion mould.Its forming process is, utilizes the anti-extruding mold metal filled bottom to blank that the blank cylindrical is unnecessary, so that the outside diameter of blank reduces, length lengthens, to obtain meeting the tubular sliding sleeve forging of finished size.
Please refer to shown in Fig. 4 b the radial section figure (being figure shown in Fig. 1 b) of the tubular sliding sleeve forging that it obtains after for the blank cold-finish among Fig. 4 a.The outside diameter of described tubular sliding sleeve forging is less than the outside diameter of described blank, inner cavity size is identical or approximate with the inner cavity size of blank, thick wall part S3(S3 also can refer to the radial section shape of thick wall part) and thin-walled portion S4(S4 also can refer to the radial section shape of thin-walled portion), and (S1 '-S3)/S3 ≈ (S2 '-S4)/S4, be that forging thin-walled portion before and after finishing is consistent with the thick wall part deflection, the flow rate of material at two places is roughly the same, because fillet A is in the junction of thin-walled portion and thick wall part, so the metal flow speed at fillet A place is consistent with thin-walled portion and thick wall part.
In sum, because the profile to the tubular bar section of blank has been made suitable modification, therefore, when the cold-finish operation, blank is under the effect of power; the metal at the knuckle place between thin-walled portion, thick wall part and thin-walled portion and the thick wall part flows with identical speed, thereby so that the fillet of the interior raceway of the tubular sliding sleeve forging that cold-finish obtains and inner cylinder is sufficient, thereby the phenomenon of generation hickie after the elimination finishing.
Please refer to shown in Figure 5ly, it is for carrying out the structural representation of the anti-extruding mold of cold-finish operation to the blank in the utility model.Alignment pin 540 in the fairlead 530 that described anti-extruding mold comprises upper punch 510, forms the counterdie 520 of lower mode cavity, be fixedly connected with counterdie, the keyway that is arranged at upper punch 510 and be arranged at locating slot 550 corresponding to fairlead 530 inboards and alignment pin 540.
In the present embodiment, counterdie 520 and fairlead 530 utilize pin key 560 to be fixed, and to realize the location of fairlead and counterdie, the position of pin key and counterdie die shape have position relationship.The nose shape of keyway and upper punch 510 has the high position relationship of precision.
Next introduce in detail the process of utilizing anti-extruding mold to carry out cold-finish.
The blank of above-mentioned warm forging operation formation is put into the lower mode cavity of described counterdie 520;
Adjust upper punch 510 and make that alignment pin 540 can enter in the locating slot 550 smoothly in its descending process, alignment pin 540 positions smoothly and shows in the groove 550 that upper punch 510 and fairlead 530 location finish.Because fairlead 530 has been had good positioning with counterdie 520, therefore, alignment pin 540 positions when finishing upper punch 510 with fairlead 530 location in the groove 550 smoothly, also finishes the location, position of upper punch 510 and counterdie 520;
In sum, described anti-extruding mold adopts the mode of keyway location, utilizes fairlead and counterdie location, and keyway and fairlead on the recycling drift are located, and reach the location of drift and counterdie.This kind locate mode is simple, and mould structure is also simple, and is more more accurate than module location, school in the past, convenient operation.
Above-mentioned explanation has fully disclosed the specific embodiment of the present utility model.It is pointed out that and be familiar with the scope that any change that the person skilled in art does the specific embodiment of the present utility model does not all break away from claims of the present utility model.Correspondingly, the scope of claim of the present utility model also is not limited only to previous embodiment.
Claims (2)
1. an anti-extruding mold is characterized in that, the alignment pin in the fairlead that comprise upper punch, form the counterdie of lower mode cavity, is fixedly connected with counterdie, the keyway that is arranged at upper punch and be arranged at the fairlead inboard locating slot corresponding with alignment pin.
2. anti-extruding mold according to claim 1 is characterized in that, described blank comprises tubular bar section and the head that links to each other with the cylinder end of tubular bar section,
The tubular bar section of described blank comprises thick wall part and thin-walled portion, the outward flange of thick wall part and thin-walled portion forms cylinder, inward flange forms inner chamber, described inner chamber comprises interior raceway and inner cylinder, interior raceway is connected by round-corner transition with inner cylinder, the excircle dimension that the excircle dimension that the outward flange of described thick wall part forms forms greater than the outward flange of described thin-walled portion, and greater than the excircle dimension of finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220382424 CN202824488U (en) | 2012-08-02 | 2012-08-02 | Reverse extruding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220382424 CN202824488U (en) | 2012-08-02 | 2012-08-02 | Reverse extruding die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202824488U true CN202824488U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220382424 Expired - Lifetime CN202824488U (en) | 2012-08-02 | 2012-08-02 | Reverse extruding die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202824488U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814440A (en) * | 2012-08-02 | 2012-12-12 | 盐城理研精密锻造有限公司 | Forging method of cylindrical slide sleeve and reverse extrusion mould |
| CN105327962A (en) * | 2015-10-19 | 2016-02-17 | 江苏森威集团飞达股份有限公司 | Die for controlling shape of inverted extrusion bottom of cup-shaped part |
| CN107350409A (en) * | 2017-08-09 | 2017-11-17 | 江苏威鹰机械有限公司 | New-energy automobile slidably engages set back extrusion concave |
| CN113426939A (en) * | 2021-05-11 | 2021-09-24 | 江苏全成奥马热工科技有限公司 | Compound anti-mould structure of crowded of sliding sleeve |
-
2012
- 2012-08-02 CN CN 201220382424 patent/CN202824488U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814440A (en) * | 2012-08-02 | 2012-12-12 | 盐城理研精密锻造有限公司 | Forging method of cylindrical slide sleeve and reverse extrusion mould |
| CN105327962A (en) * | 2015-10-19 | 2016-02-17 | 江苏森威集团飞达股份有限公司 | Die for controlling shape of inverted extrusion bottom of cup-shaped part |
| CN105327962B (en) * | 2015-10-19 | 2017-11-14 | 江苏森威集团飞达股份有限公司 | A kind of mould for controlling cup shell backward extrusion bottom shape |
| CN107350409A (en) * | 2017-08-09 | 2017-11-17 | 江苏威鹰机械有限公司 | New-energy automobile slidably engages set back extrusion concave |
| CN113426939A (en) * | 2021-05-11 | 2021-09-24 | 江苏全成奥马热工科技有限公司 | Compound anti-mould structure of crowded of sliding sleeve |
| CN113426939B (en) * | 2021-05-11 | 2023-01-24 | 江苏全成奥马热工科技有限公司 | Compound anti-mould structure of crowded of sliding sleeve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 224100 West Zone, Dafeng District, Jiangsu, Yancheng City Patentee after: JIANGSU LIKEN TECHNOLOGY CO.,LTD. Address before: 224100 No. three, West Road, Dafeng Economic and Technological Development Zone, Yancheng City, Jiangsu Patentee before: YANCHENG LIKEN PRECISION FORGING CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |