CN220444675U - Warm extrusion die for titanium alloy slender stepped rod piece - Google Patents
Warm extrusion die for titanium alloy slender stepped rod piece Download PDFInfo
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- CN220444675U CN220444675U CN202321846613.8U CN202321846613U CN220444675U CN 220444675 U CN220444675 U CN 220444675U CN 202321846613 U CN202321846613 U CN 202321846613U CN 220444675 U CN220444675 U CN 220444675U
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- titanium alloy
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- 238000000304 warm extrusion Methods 0.000 title claims abstract description 21
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 18
- 238000001125 extrusion Methods 0.000 claims abstract description 53
- 230000007246 mechanism Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 13
- 239000000463 material Substances 0.000 abstract description 8
- 238000003825 pressing Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 238000007723 die pressing method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The application relates to the field of titanium alloy rod processing, and particularly discloses a warm extrusion die for a titanium alloy long and thin stepped rod piece, which comprises an upper die capable of vertically reciprocating, a fixed lower die, a first extrusion lower die and a second extrusion lower die, wherein the first extrusion lower die comprises two stages, and the second extrusion lower die comprises three stages. The problem that current warm extrusion die material is extravagant big and can't process step form member can be solved to this scheme.
Description
Technical Field
The utility model relates to the field of titanium alloy rod processing, in particular to a warm extrusion die for a titanium alloy slender stepped rod piece.
Background
I have used warm forming technology to process titanium alloy rod pieces. The warm forming technology is a method for processing the raw materials of parts by applying pressure, namely heating the production parts at normal temperature to a proper temperature, and then preheating the die to a temperature lower than that of the workpiece to be formed, and applying pressure to the raw materials by external force to form the workpiece in the set die. When the titanium alloy slender rod piece is produced, the screw rod is required to be processed through three working procedures of warm extrusion, warm upsetting and warm rolling, wherein in the warm extrusion working procedure, the forged blank is put into a die, and pressure is applied to the blank through external force, so that the rod body of the slender rod is preformed.
Through inspection, the conventional warm extrusion die for titanium alloy slender rods, such as the warm extrusion die disclosed by the utility model with publication number CN206334978U, comprises an extrusion upper die plate, a lower die plate, an upper male die and a lower female die, wherein the upper male die is cylindrical, the axial section of the lower female die is U-shaped, and a through hole is formed in the bottom of the lower female die. And extruding the male die at a speed of 0.1mm/s after the male die contacts the blank until the forging is extruded into a bar. The defects of the scheme are that: 1. the inner cavity of the lower female die is in a T-shaped through hole, an inclined plane is adopted between a large-caliber section at the upper end of the through hole and a small-caliber section at the lower end of the through hole, a cylindrical upper male die is slidably connected in the large-caliber section at the upper end of the through hole, and during extrusion, the upper male die is limited by the inclined plane transition section and cannot completely extrude blanks into the small-caliber section, so that extruded bars are not completely rod-shaped, the head of the bar is provided with a part of excess material with larger diameter and conical side walls, the part of the bar is required to be cut before the next upsetting process, a great amount of material is wasted, and the bar cannot be directly molded; 2. the small-caliber section of the lower female die is a through hole with the same diameter of each section, but the finished product of the titanium alloy rod piece processed by my department is required to be stepped, so that the die cannot meet the processing requirement of my department, and the warm extrusion die of the titanium alloy slender stepped rod piece is provided.
Disclosure of Invention
The utility model provides a warm extrusion die for a titanium alloy slender stepped rod piece, which aims to solve the problems that the conventional warm extrusion die is large in material waste and cannot process the stepped rod piece.
In order to solve the problems, the utility model adopts the following technical scheme: the warm extrusion die comprises an upper die and a fixed lower die which can reciprocate up and down, wherein the lower die is provided with a lower die cavity which is in a column shape and vertically penetrates through the lower die, the lower die comprises a first extrusion lower die and a second extrusion lower die, the lower die cavity of the first extrusion lower die is divided into a first stage and a second stage from low to high, and the inner diameter of the first stage is smaller than that of the second stage; the first stage of the second extrusion lower die is the same as the first extrusion lower die, the second stage of the second extrusion lower die is divided into a second stage and a third stage from low to high, and the inner diameter of the third stage is larger than that of the second stage.
The basic principle of the scheme is as follows: after the slender rod is put into the first extrusion lower die, the upper die is used for extruding the slender rod in a lower extruding mode, so that the diameter of the bottom part of the slender rod is reduced to be a stepped shaft, then the slender rod is put into the second extrusion lower die, and the upper die is used for extruding again, so that the diameter of the lower end of the slender rod is reduced again to be a second-order stepped shaft.
The beneficial effect of this scheme is: the existing warm extrusion die is one-step extrusion, the head of an elongated rod is provided with surplus materials after extrusion, and the rod cannot be completely formed, the scheme adopts two extrusion lower dies, the secondary extrusion has a certain compensation effect on the part which is not fully filled with materials, and the diameter change of a second-order stepped shaft is a progressive process, so that the situation that the material is not fully filled due to overlarge deformation in the extrusion process can be effectively avoided
Further, a ring table is arranged at the edge of the top surface of the lower die. The ring table can be provided with a lower die pressing plate to fix the lower die on a lower die holder of the warm header.
Further, the bottom surface of the upper die is a plane, and the area of the bottom surface of the upper die is 2-3 times of the area of the top surface of the lower die cavity. So that the upper mold bottom surface fully contacts the top surface of the elongated rod and closes the lower mold cavity opening.
Further, a push rod capable of sliding up and down is movably connected in the lower die cavity, and the push rod is fixed on a driving mechanism arranged outside. The elongate rod material is supported by a ejector rod and can be ejected upwards after extrusion.
Further, the diameters of the two ends of the upper die are large, the diameter of the middle of the upper die is small, the side wall of the upper end of the upper die is a conical surface, and the outer wall of the lower end of the upper die is a cylindrical surface. The cylindrical surface enables the upper die to pass through the opening of the pressing sleeve, the conical surface fixes the upper die in the pressing sleeve, and the upper die is installed in the upper die holder through the pressing sleeve.
Further, the side wall of the interface between the first stage and the second stage is smoothly treated, and the side wall of the interface between the second stage and the third stage is smoothly treated. So that the step interface transition of the formed slender rod is smooth.
Drawings
FIG. 1 is a schematic diagram of an assembly of an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a first lower die in the present embodiment;
FIG. 3 is a schematic diagram of a second lower die in the present embodiment;
fig. 4 is a schematic view of a workpiece in this embodiment.
Detailed Description
The following is a further detailed description of the embodiments:
reference numerals in the drawings of the specification include: guide sleeve 1, extrusion upper die 2, lower die pressing plate 3, guide pillar 4, lower die cavity 5, lower die holder 6, lower die pad 7, ejector rod 8, first extrusion lower die 91, second extrusion lower die 92, bolt 10, upper die holder 11, extrusion upper die cushion block 12, press sleeve 13, upper die pressing plate 14.
An embodiment is substantially as shown in figures 1 to 4:
the present embodiment is used in a warm extrusion process in a warm forming process, which includes two extrusion steps, namely, a first step shape of an elongated rod is preformed by using a first extrusion lower die 91, and a second step shape of an elongated rod is preformed by using a second extrusion lower die 92.
As shown in fig. 1, the extrusion upper die 2 is a column, the diameters of two ends of the extrusion upper die 2 are large, the diameters of the middle are small, the upper end of the extrusion upper die 2 is a cone section, the lower end of the extrusion upper die 2 is a cylinder section, the extrusion upper die 2 is fixed in the upper die holder 11, the upper die holder 11 is plate-shaped, the left and right ends of the upper die holder 11 penetrate through vertical guide sleeves 1, the guide sleeves 1 penetrate through vertical guide pillars 4, the guide pillars 4 are fixed on a lower die holder 6 which is horizontally arranged, the upper die holder 11 and the lower die holder 6 are respectively fixed on a warm heading machine, and the reciprocating up-down movement of the extrusion upper die 2 is realized by utilizing a hydraulic system of the warm heading machine.
The upper die holder 11 is provided with a mounting groove with a downward opening at one end of the extrusion upper die 2, a cushion block of the extrusion upper die 2 is placed at the bottom of the mounting groove, the extrusion upper die 2 passes through the cylindrical pressing sleeve 13 from top to bottom, and the inner wall of the pressing sleeve 13 is a conical surface attached to the upper end of the extrusion upper die 2, so that the extrusion upper die 2 is limited in the pressing sleeve 13. The pressing sleeve 13 is arranged in the mounting groove, the upper die pressing plate 14 covering the top surface of the whole mounting groove is arranged outside the pressing sleeve 13, threaded blind holes with downward openings are machined on two sides of the mounting groove, the upper die pressing plate 14 is connected with the blind holes of the upper die holder 11 in a threaded manner through the bolts 10, and the upper die 2 is extruded to be arranged in the upper die holder 11.
The lower die comprises a first extrusion lower die 91 and a second extrusion lower die 92, which are rectangular, and a lower die cavity 5 vertically penetrating through the lower die cavity is formed at the center shaft, wherein the lower die cavity 5 of the first extrusion lower die 91 is divided into a first stage and a second stage from low to high, and the diameter of the first stage is smaller than that of the second stage; the lower die cavity 5 of the second extrusion lower die 92 divides the second step section again, and the upper end of the second stage forms a third stage having a larger diameter than the second stage.
The die holder 6 is "protruding", and the recess that can hold the lower mould and open upward is machined at die holder 6 middle part, and lower die pad piece 7 is placed to the recess bottom, and lower die pad piece 7 axis department machine is made the through-hole that can supply ejector pin 8 to pass, and the top surface outer edge of lower mould is processed out the ring platform, installs the lower die clamp plate 3 that can cover ring platform and whole die holder 6 top surface at the top surface of die holder 6, and the blind hole of open upward screw thread is machined at die holder 6 upper end, fixes lower die clamp plate 3 at die holder 6 top surface through bolt 10.
The specific implementation process is as follows:
the blank is an elongated rod, after the first extrusion lower die 91 is fixed on a warm header, the elongated rod is inserted into the lower die cavity 5 of the first extrusion lower die 91 and is in contact with the ejector rod 8, wen Duiji is started, the upper die is pressed down to extrude the elongated rod, the diameter of the bottom part of the elongated rod is reduced to be a stepped shaft, the left stepped rod-shaped part in fig. 4 is used for ejecting a processed workpiece by the ejector rod 8, the second extrusion lower die 92 is used for extruding the elongated rod again, the diameter of the lower end of the elongated rod is reduced again to be a second stepped shaft, the right stepped rod-shaped part in fig. 4 is used for compensating the part of the first extrusion, and the diameter change of the second stepped shaft is a gradual process. After the assembly of each component is finished, the components are arranged at the corresponding positions of the warm header, and continuous automatic extrusion of the slender stepped rod piece is realized through a machine tool feeding system and a hydraulic system.
The foregoing is merely exemplary embodiments of the present utility model, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (6)
1. The utility model provides a warm extrusion die of long and thin echelonment member of titanium alloy, includes upper die, the fixed lower mould of reciprocating motion from top to bottom, its characterized in that: the lower die is provided with a lower die cavity which is columnar and vertically penetrates through the lower die, the lower die comprises a first extrusion lower die and a second extrusion lower die, the lower die cavity of the first extrusion lower die is divided into a first stage and a second stage from low to high, and the inner diameter of the first stage is smaller than the inner diameter of the second stage; the first stage of the second extrusion lower die is the same as the first extrusion lower die, the second stage of the second extrusion lower die is divided into a second stage and a third stage from low to high, and the inner diameter of the third stage is larger than that of the second stage.
2. The warm extrusion die for a titanium alloy elongated stepped rod member according to claim 1, wherein: the top surface edge of lower mould has seted up the ring platform.
3. A warm extrusion die for a titanium alloy elongated stepped rod member according to claim 2, wherein: the bottom surface of the upper die is a plane, and the area of the bottom surface of the upper die is 2-3 times of the area of the top surface of the lower die cavity.
4. A warm extrusion die for a titanium alloy elongated stepped rod member according to claim 3, wherein: the lower die cavity is movably connected with a push rod capable of sliding up and down, and the push rod is fixed on a driving mechanism arranged outside.
5. The warm extrusion die for a titanium alloy elongated stepped rod member according to claim 4, wherein: the two ends of the upper die are large in diameter, the middle of the upper die is small in diameter, the side wall of the upper end of the upper die is a conical surface, and the outer wall of the lower end of the upper die is a cylindrical surface.
6. The warm extrusion die for a titanium alloy elongated stepped rod member according to claim 5, wherein: and the side wall of the interface between the first stage and the second stage is smoothly treated, and the side wall of the interface between the second stage and the third stage is smoothly treated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321846613.8U CN220444675U (en) | 2023-07-13 | 2023-07-13 | Warm extrusion die for titanium alloy slender stepped rod piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321846613.8U CN220444675U (en) | 2023-07-13 | 2023-07-13 | Warm extrusion die for titanium alloy slender stepped rod piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220444675U true CN220444675U (en) | 2024-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321846613.8U Active CN220444675U (en) | 2023-07-13 | 2023-07-13 | Warm extrusion die for titanium alloy slender stepped rod piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220444675U (en) |
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2023
- 2023-07-13 CN CN202321846613.8U patent/CN220444675U/en active Active
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