CN214601098U - Special die carrier device of multi-step deep hole backward extrusion - Google Patents
Special die carrier device of multi-step deep hole backward extrusion Download PDFInfo
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- CN214601098U CN214601098U CN202120584825.8U CN202120584825U CN214601098U CN 214601098 U CN214601098 U CN 214601098U CN 202120584825 U CN202120584825 U CN 202120584825U CN 214601098 U CN214601098 U CN 214601098U
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Abstract
A special die set device for multi-step deep hole backward extrusion comprises an upper die assembly, a lower die assembly and a forge piece demoulding assembly, wherein the upper die assembly and the lower die assembly are both positioned on a vertical central line of a die set, and the demoulding assembly is positioned between the upper die assembly and the lower die assembly; the upper die assembly comprises an upper die plate and a punch, the upper die plate is integrally arranged on an upper sliding block of the press, the upper die plate is respectively provided with a central stepped hole and diagonal part holes positioned at two sides, and the punch is arranged in the central stepped hole of the upper die plate in a matched manner; the lower die component comprises a main ejector rod, an auxiliary ejector rod, a lower die plate, a die holder and a female die component, the lower die plate is integrally arranged on the table surface of the press, the lower die plate is respectively provided with a central stepped hole and holes at the diagonal positions at two sides, the main ejector rod and the auxiliary ejector rod are arranged in the central stepped hole of the lower die plate, and the auxiliary ejector rod is arranged at the upper part of the main ejector rod and contacts with a forge piece; the demoulding component comprises a pull rod, a return spring, a discharging plate and a discharging stop dog; realize the extrusion forming of the multi-step high-precision hole and the special-shaped hole thereof.
Description
Technical Field
The utility model belongs to metal plasticity cold forming device field, concretely relates to special die carrier device of deep hole backward extrusion of many steps.
Background
At present, in the industrial fields of automobiles, electric power, machinery, ships and the like, a plurality of cup-shaped and rod-shaft parts with step deep holes, particularly non-circular special-shaped holes are provided, the parts with large using amount are machined by a machining method, the machining efficiency is low, and due to the fact that a plurality of deep holes are machined, a cutter cannot reach a designated machining position easily, and the machining difficulty is high. The part is manufactured by a metal extrusion forming method, the production efficiency is ensured, the utilization rate of metal materials is improved, the forming of a common step hole generally adopts a backward extrusion forming method, the forming is carried out by a step forging method, a larger inner hole of one stage is formed firstly, and a smaller inner hole of the next stage is formed secondly. The technical difficulty of deep hole extrusion is as follows: because the positioning of the punch with the deep hole is difficult, if the die orifice is adopted for guiding, the punch is required to be made long so as to ensure that the punch is always in the guiding state during the backward extrusion, the die is required to be designed to be thick so as to facilitate the guiding of the punch, the cost of the die is high, the service life of the punch is difficult to ensure due to long service life, a press sliding block and a table piece are required to have a large space distance, the formed extrusion stroke is long, and the forming efficiency is low. The above problem is particularly acute when extruding a small diameter hole of a stepped hole, the smaller the forming hole diameter, the larger the punch aspect ratio, and the shorter the punch life.
SUMMERY OF THE UTILITY MODEL
In view of this, in order to solve the above-mentioned deficiencies of the prior art, the present invention provides a special die carrier device for multi-step deep hole backward extrusion, which can realize the extrusion forming of multi-step high-precision holes and special-shaped holes thereof.
In order to achieve the above object, the utility model adopts the following technical scheme:
a special die set device for multi-step deep hole backward extrusion comprises an upper die assembly, a lower die assembly and a forge piece demoulding assembly, wherein the upper die assembly and the lower die assembly are both positioned on a vertical central line of the die set, and the demoulding assembly is positioned between the upper die assembly and the lower die assembly;
the upper die assembly comprises an upper die plate and a punch, the upper die plate is integrally arranged on an upper sliding block of the press, the upper die plate is respectively provided with a central stepped hole and diagonal part holes positioned at two sides, and the punch is arranged in the central stepped hole of the upper die plate in a matched manner; the lower die component comprises a main ejector rod, an auxiliary ejector rod, a lower die plate, a die holder and a female die component, the lower die plate is integrally arranged on the table surface of the press, the lower die plate is respectively provided with a central stepped hole and diagonal part holes positioned at two sides, the main ejector rod and the auxiliary ejector rod are arranged in the central stepped hole of the lower die plate, and the auxiliary ejector rod is arranged at the upper part of the main ejector rod and contacts with a forge piece; the demolding component comprises a pull rod, a reset spring, a discharging plate and a discharging stop block, the lower end of the pull rod is arranged in the lower template, the discharging plate is arranged at the upper end of the pull rod, the discharging stop block is arranged in the discharging plate, and the reset spring is sleeved outside the pull rod.
Further, an upper padding plate and a punch guide sleeve are sequentially arranged in a central stepped hole of the upper die plate from top to bottom, a punch cushion block and a punch sleeve cover are sequentially arranged in an inner cavity of the punch guide sleeve from top to bottom, a punch is arranged in the inner stepped hole of the punch sleeve, punch locking nuts enabling the punch guide sleeve and the punch to be installed in a locating mode are respectively connected to two sides of the bottom of the punch guide sleeve, a guide sleeve is arranged in a diagonal position hole in one side of the upper die plate, and the guide sleeve is connected to the upper die plate through a guide sleeve fixing flange.
Further, a lower base plate and a die holder are sequentially arranged in a central stepped hole of the lower die plate from bottom to top, two sides of the die holder are connected to the lower die plate through die holder press rings respectively, a die cushion block, a die height adjusting block and a die assembly are arranged in the die holder from bottom to top, the die assembly comprises a die I and a die II which are arranged from top to bottom, and die holder internal parts are connected to the die holder through the die press rings on two sides.
Furthermore, the main ejector rod and the auxiliary ejector rod are arranged in the female die cushion block, and the main ejector rod sequentially penetrates through the lower cushion plate and the lower template and is connected to the press ejection cylinder.
Furthermore, the lower die assembly further comprises a guide pillar, the guide pillar is arranged in a diagonal position hole on the other side of the lower die plate, and the guide pillar is arranged on the lower die plate through a guide pillar fixing flange.
Furthermore, the lower end of the pull rod is arranged in holes which are symmetrically distributed on the left and right of the lower template and is fixed on the lower template by a pull rod fixing flange, the upper end of the pull rod is provided with a stripper plate, and a stripper stop block is arranged in a central stepped hole of the stripper plate.
Furthermore, the punch and the auxiliary ejector rod are positioned on the same vertical line, and the unloading stop block is positioned between the punch and the auxiliary ejector rod; the guide sleeve corresponds to the guide pillar in the up-down position, and the guide pillar is movably sleeved in the inner cavity of the guide sleeve in a matching manner.
Further, the die orifice of the female die I22 is a conical orifice with an angle of 1-1.5 degrees, and the lower end line of the conical orifice is higher than the upper end line of the forged piece 28 after the forged piece falls into the die.
Further, the punch 18 is of a step structure, the section transition position of the punch 18 is of a conical structure, the extrusion end of the punch 18 is provided with a ligament structure, and the length L of the thin rod part at the rear part of the ligament is larger than the hole depth of the formed forged piece.
The utility model has the advantages that:
the utility model discloses a special die carrier device of many steps deep hole backward extrusion can realize deep hole, many steps hole extrusion, because its design has guide pillar, guide pin bushing etc. and lead parts, the effectual position precision problem of having guaranteed last mould subassembly, bed die subassembly avoids using the problem that the deep hole that die orifice direction mode caused backward extrudees drift overlength guide pillar life and crosses lowly. Meanwhile, the device is provided with a forging demoulding component, so that the problem that the punch is wrapped outside the punch when the punch is withdrawn and the female die is pulled out along with the punch due to overlarge deformation of the extrusion-molded forging can be solved, and the forging can be demoulded due to the blocking of the demoulding component. The die height adjusting block and the die cushion block designed by the device can be adjusted in time along with the shape characteristics of a forging piece so as to ensure that a forming die has proper forming height and ejection stroke.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the first-stage deep hole extrusion of the present invention;
FIG. 3 is a schematic view of the structure of the lower template;
FIG. 4 is a partial schematic view of an inner forming die portion;
FIG. 5 is a schematic view of the punch;
FIG. 6 is a three-dimensional cross-sectional view of a two-stage stepped bore part forging;
the labels in the figure are: 1-main ejector rod, 2-lower backing plate, 3-lower template, 4-die holder, 5-die holder pressing ring, 6-pull rod fixing flange, 7-pull rod, 8-reset spring, 9-stripper plate, 10-punch locking nut, 11-punch guide sleeve, 12-punch cushion block, 13-upper backing plate, 14-upper template, 15-guide sleeve, 16-guide sleeve fixing flange, 17-punch sleeve, 18-punch, 19-guide column, 20-discharge baffle, 21-die pressing ring, 22-die I, 23-die II, 24-die height adjusting block, 25-guide column fixing flange, 26-die cushion block, 27-auxiliary ejector rod and 28-forged piece.
Detailed Description
The following provides specific embodiments, which will further clearly, completely and specifically explain the technical solutions of the present invention. The present embodiment is the best embodiment based on the technical solution of the present invention, but the scope of the present invention is not limited to the following embodiments.
A die set device special for backward extrusion of a step deep hole comprises an upper die assembly, a lower die assembly and a forge piece demoulding assembly, wherein the upper die assembly and the lower die assembly are both positioned on a vertical central line of the die set, and the demoulding assembly is positioned between the upper die assembly and the lower die assembly;
the upper die assembly comprises an upper die plate 14 and a punch 18, the upper die plate 14 is integrally arranged on an upper sliding block of the press, the upper die plate 14 is respectively provided with a central stepped hole and diagonal part holes positioned at two sides, and the punch 18 is arranged in the central stepped hole of the upper die plate 14 in a matched manner; the lower die component comprises a main ejector rod 1, an auxiliary ejector rod 27, a lower die plate 3, a die holder 4 and a female die component, the lower die plate 3 is integrally arranged on the table surface of the press, the lower die plate 3 is respectively provided with a central stepped hole and diagonal part holes positioned at two sides, the main ejector rod 1 and the auxiliary ejector rod 27 are arranged in the central stepped hole of the lower die plate 3, and the auxiliary ejector rod 27 is arranged at the upper part of the main ejector rod 1 and contacts with a forge piece 28; drawing of patterns subassembly includes pull rod 7, reset spring 8, stripper 9, the dog 20 of unloading, 7 lower extremes of pull rod are established in lower bolster 3, and the upper end sets up stripper 9, is equipped with the dog 20 of unloading in the stripper 9, and the outside cover of pull rod 7 is equipped with reset spring 8.
Further, the forging 28 is a formed forging.
Further, an upper backing plate 13 and a punch guide sleeve 11 are sequentially arranged in a central stepped hole of the upper die plate 14 from top to bottom, a punch cushion block 12 and a punch sleeve 17 are sequentially arranged in an inner cavity of the punch guide sleeve 11 from top to bottom, a punch 18 is arranged in the stepped hole in the punch sleeve 17, punch locking nuts 10 enabling the punch guide sleeve 11 and the punch 18 to be located and installed are respectively connected to two sides of the bottom of the punch guide sleeve 11, a guide sleeve 15 is arranged in a diagonal position hole in one side of the upper die plate 14, and the guide sleeve is connected to the upper die plate 14 through a guide sleeve fixing flange 16.
Further, a lower base plate 2 and a die holder 4 are sequentially arranged in a central stepped hole of the lower die plate 3 from bottom to top, two sides of the die holder 4 are respectively connected to the lower die plate 3 through a die holder pressing ring 5, a die cushion block 26, a die height adjusting block 24 and a die assembly are arranged in the die holder 4 from bottom to top, the die assembly comprises a die I22 and a die II 23 which are vertically arranged, and internal parts of the die holder 4 are connected to the die holder 4 through die pressing rings 21 on two sides.
Further, the die orifice of the female die I22 is a conical orifice with an angle of 1-1.5 degrees, and the lower end line of the conical orifice is higher than the upper end line of the forged piece 28 after the forged piece falls into the die. The design can reduce the ejection stroke, improve the forming efficiency and facilitate the demoulding of the forge piece.
Furthermore, the punch 18 is of a step type, the section transition position of the punch 18 is of a conical structure, the extrusion end of the punch 18 is provided with a ligament structure, and the length L of the thin rod part at the rear part of the ligament is larger than the hole depth of the formed forged piece.
Further, the main ejector rod 1 and the auxiliary ejector rod 27 are arranged in the die cushion block 26, and the main ejector rod 1 sequentially penetrates through the lower backing plate 2 and the lower template 3 and is connected to a press ejection cylinder.
Further, the lower die assembly further comprises a guide pillar 19, the guide pillar 19 is arranged in a diagonal hole on the other side of the lower die plate 3, and the guide pillar 19 is arranged on the lower die plate 3 through a guide pillar fixing flange 25.
Further, the lower end of the pull rod 7 is arranged in holes which are symmetrically distributed on the left and right of the lower template 3, the pull rod fixing flange 6 is fixed on the lower template 3, the upper end of the pull rod 7 is provided with a discharging plate 9, and a discharging stop block 20 is arranged in a central stepped hole of the discharging plate 9.
Further, the punch 18 and the auxiliary mandril 27 are positioned on the same vertical line, and the discharge stop 20 is positioned between the punch 18 and the auxiliary mandril 27; the guide sleeve 15 corresponds to the guide post 19 in the up-down position, and the guide post 19 is movably sleeved in the inner cavity of the guide sleeve 15 in a matching manner.
The utility model discloses concrete forging forming process as follows:
placing a forging 28 into a die cavity of a female die I22 of a lower die assembly, moving an upper slide block of a press downwards to drive an upper die assembly extruded upwards to move downwards, and enabling a punch 18 to penetrate through a discharging stop block 20 fixed in a discharging plate 9; the press continues to move downwards, a guide sleeve 15 fixedly positioned on the upper template 14 is sleeved into a guide post 19 fixed on the lower template 3, so that the upper die assembly and the lower die assembly are guided; the press continues to move downwards, the lower end face of the punch sleeve 17 of the upper die assembly is contacted with the discharging stop block 20, so that the discharging plate 9 moves downwards, and the return spring 8 is compressed; the press continues to descend, the lower end face of the punch 18 contacts the forge piece 28 and then begins to be extruded, and the sliding block on the press stops moving after the extrusion is in place. And resetting the upper sliding block of the press, if the forge piece is left in the female die, after the upper sliding block of the press is reset, the ejection cylinder of the press moves upwards to act on the main ejector rod 1 and the auxiliary ejector rod 27, the formed forge piece is ejected out of the female die I22, after the forge piece is taken out, the ejection cylinder is reset, and the blank placed in the forge piece is repeatedly moved. If the upper sliding block of the press resets, the forging piece wrapping punch 18 is taken out of the female die I22, the reset spring 8 extends and resets in the upward movement process of the sliding block, the discharging plate 9 stops moving when the sliding block reaches the limit position, the punch 18 drives the forging piece to continue to move upwards, the upper end face of the forging piece acts on the discharging stop dog 20, the forging piece is separated from the punch 18, and after the sliding block of the press resets, the forging piece is taken out, and the next forging piece blank is placed into the die to repeat the actions.
When forming the multi-level hole, replacing the punch for forming the next-level hole, putting the forging blank formed with the previous-level hole into the die, and repeating the above actions.
To sum up, the utility model discloses a special die carrier device of many steps deep hole backward extrusion can realize deep hole, many steps hole extrusion moulding, because its design has guide pillar, guide pin bushing etc. and guide parts, the effectual position precision problem of having guaranteed mould subassembly, bed die subassembly, avoids using the anti-problem of extruding drift overlength guide pillar low excessively of deep hole that die orifice direction mode caused. Meanwhile, the device is provided with a forging demoulding component, so that the problem that the punch is wrapped outside the punch when the punch is withdrawn and the female die is pulled out along with the punch due to overlarge deformation of the extrusion-molded forging can be solved, and the forging can be demoulded due to the blocking of the demoulding component. The die height adjusting block and the die cushion block designed by the device can be adjusted in time along with the shape characteristics of a forging piece so as to ensure that a forming die has proper forming height and ejection stroke.
The essential features, the basic principle and the advantages of the invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that the present invention can be modified in various ways according to the actual situation without departing from the spirit and scope of the present invention, and these modifications and improvements are all within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a special die carrier device of deep hole backward extrusion of many steps which characterized in that: the forging die comprises an upper die assembly, a lower die assembly and a forging demoulding assembly, wherein the upper die assembly and the lower die assembly are both positioned on the vertical central line of a die frame, and the demoulding assembly is positioned between the upper die assembly and the lower die assembly;
the upper die assembly comprises an upper die plate (14) and a punch (18), the upper die plate (14) is integrally arranged on an upper sliding block of the press, the upper die plate (14) is respectively provided with a central stepped hole and diagonal part holes positioned at two sides, and the punch (18) is arranged in the central stepped hole of the upper die plate (14) in a matched manner; the lower die component comprises a main ejector rod (1), an auxiliary ejector rod (27), a lower die plate (3), a die holder (4) and a female die component, the lower die plate (3) is integrally arranged on the table surface of the press, the lower die plate (3) is respectively provided with a central stepped hole and diagonal part holes positioned at two sides, the main ejector rod (1) and the auxiliary ejector rod (27) are arranged in the central stepped hole of the lower die plate (3), and the auxiliary ejector rod (27) is arranged at the upper part of the main ejector rod (1) and contacts with a forge piece (28); drawing of patterns subassembly includes pull rod (7), reset spring (8), stripper (9), the dog (20) of unloading, establish in lower bolster (3) pull rod (7) lower extreme, and the upper end sets up stripper (9), is equipped with the dog (20) of unloading in stripper (9), and the outside cover of pull rod (7) is equipped with reset spring (8).
2. The special die carrier device for the backward extrusion of the multi-step deep hole as claimed in claim 1, wherein: the punch press is characterized in that an upper base plate (13) and a punch guide sleeve (11) are sequentially arranged in a central stepped hole of an upper die plate (14) from top to bottom, a punch cushion block (12) and a punch sleeve (17) are sequentially arranged in an inner cavity of the punch guide sleeve (11) from top to bottom, punches (18) are arranged in stepped holes in the punch sleeve (17), punch locking nuts (10) enabling the punch guide sleeve (11) and the punches (18) to be installed in a positioning mode are respectively connected to two sides of the bottom of the punch guide sleeve (11), a guide sleeve (15) is arranged in a diagonal position hole in one side of the upper die plate (14), and the guide sleeve is connected to the upper die plate (14) through a guide sleeve fixing flange (16).
3. The special die carrier device for the backward extrusion of the multi-step deep hole as claimed in claim 2, wherein: the guide sleeve (15) corresponds to the guide pillar (19) in the up-down position, and the guide pillar (19) is movably sleeved in the inner cavity of the guide sleeve (15) in a matching way; the punch head (18) and the auxiliary ejector rod (27) are located on the same vertical line, and the discharging stop block (20) is located between the punch head (18) and the auxiliary ejector rod (27).
4. The special die carrier device for the backward extrusion of the multi-step deep hole as claimed in claim 1, wherein: the die is characterized in that a lower base plate (2) and a die holder (4) are sequentially arranged in a central stepped hole of the lower die plate (3) from bottom to top, two sides of the die holder (4) are connected to the lower die plate (3) through die holder pressing rings (5), a die cushion block (26), a die height adjusting block (24) and a die assembly are arranged in the die holder (4) from bottom to top, the die assembly comprises a die I (22) and a die II (23) which are vertically arranged, and internal parts of the die holder (4) are connected to the die holder (4) through the die pressing rings (21) on two sides.
5. The special die carrier device for the backward extrusion of the multi-step deep hole as claimed in claim 4, wherein: the die orifice of the female die I (22) is a conical orifice with an angle of 1-1.5 degrees, and the lower end line of the conical orifice is higher than the upper end line of the forged piece (28) after the forged piece falls into the die.
6. The special die carrier device for the backward extrusion of the multi-step deep hole as claimed in claim 4, wherein: the die cushion block (26) is internally provided with the main ejector rod (1) and the auxiliary ejector rod (27), and the main ejector rod (1) sequentially penetrates through the lower backing plate (2) and the lower template (3) and is connected to a press ejection cylinder.
7. The special die carrier device for the backward extrusion of the multi-step deep hole as claimed in claim 1, wherein: the lower die assembly further comprises a guide post (19), the guide post (19) is arranged in a diagonal position hole in the other side of the lower die plate (3), and the guide post (19) is arranged on the lower die plate (3) through a guide post fixing flange (25).
8. The special die carrier device for the backward extrusion of the multi-step deep hole as claimed in claim 1, wherein: the lower end of a pull rod (7) is arranged in holes which are symmetrically distributed on the left and right of the lower template (3) and is fixed on the lower template (3) by a pull rod fixing flange (6), a stripper plate (9) is arranged at the upper end of the pull rod (7), and a discharging stop block (20) is arranged in a central stepped hole of the stripper plate (9).
9. The special die carrier device for the backward extrusion of the multi-step deep hole as claimed in claim 1, wherein: the punch (18) is of a step structure, the section transition position of the punch is of a conical structure, the extrusion end of the punch (18) is provided with a ligament structure, and the length L of the thin rod part at the rear part of the ligament is larger than the hole depth of the formed forged piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120584825.8U CN214601098U (en) | 2021-03-23 | 2021-03-23 | Special die carrier device of multi-step deep hole backward extrusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120584825.8U CN214601098U (en) | 2021-03-23 | 2021-03-23 | Special die carrier device of multi-step deep hole backward extrusion |
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| Publication Number | Publication Date |
|---|---|
| CN214601098U true CN214601098U (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120584825.8U Expired - Fee Related CN214601098U (en) | 2021-03-23 | 2021-03-23 | Special die carrier device of multi-step deep hole backward extrusion |
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| CN (1) | CN214601098U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115090704A (en) * | 2022-07-12 | 2022-09-23 | 辽宁华通金属有限公司 | Interference bullet shell body integrated forming device and method |
-
2021
- 2021-03-23 CN CN202120584825.8U patent/CN214601098U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115090704A (en) * | 2022-07-12 | 2022-09-23 | 辽宁华通金属有限公司 | Interference bullet shell body integrated forming device and method |
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Granted publication date: 20211105 |