Chambering mandrel, chambering trestle and chambering device

Abstract

The utility model belongs to the technical field of chambering, and discloses a chambering mandrel, a chambering trestle and a chambering device. The chambering saddle comprises a body part, transition parts, positioning parts and supporting parts are sequentially arranged at the two ends of the body part, one end of each transition part is connected with the body part, and the peripheral face of each transition part is an inwards-concave arc face; the body part and the transition part are matched and connected with a blank; the positioning part is arranged at the end, away from the body part, of the transition part. The cross section area of the positioning part is gradually increased in the direction away from the transition part. The supporting part is arranged at one end of the positioning part away from the transition part. The chambering saddle improves the axial deformation of the blank during chambering, so that the axial performance of the blank is improved. The chambering mandrel supporter adopts the chambering mandrel and the mandrel supporter bracket, and the supporting part of the chambering mandrel is mounted on the mandrel supporter bracket, so that the quality reliability of the chambering procedure of the mandrel supporter is improved, and the quality stability of high-barrel thin-wall ring products is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hole enlarging, in particular to a hole enlarging horse lever, a hole enlarging horse frame and a hole enlarging device. Background Art

[0002] High-tube thin-walled titanium alloy ring parts such as Figure 1 As shown, it mainly refers to the height H of the high-tube thin-walled titanium alloy ring 1 Greater than 600mm, outer diameter D and height H 1 All kinds of titanium alloy rings with a ratio of less than 3.3 and a wall thickness B in the range of 70mm-150mm. This type of ring has high requirements for grain size and ultrasonic inspection. The grain size is generally tested according to GB / T6394, with a level >5 or even higher, and the ultrasonic flaw detection is tested according to GB / T 5193 and meets the A1 level.

[0003] The height of the high-tube thin-walled titanium alloy ring is relatively high. After the traditional horse frame expansion + ring rolling process is used for forming, some rings are found to have coarse grains in the middle area of ​​the ring after ultrasonic flaw detection, resulting in unqualified products with an unqualified rate of about 30%. In addition, due to the high height of the ring, folding defects often occur at the upper and lower end faces during the ring rolling process of the radial and axial ring rolling machine, with a defect rate of about 10-15%, which can lead to product scrapping in severe cases.

[0004] The traditional improvement method for the problem of high-tube thin-walled titanium alloy ring parts failing to pass the flaw detection in the prior art is generally to increase the deformation of the initial blank forging or adjust the deformation of the frame expansion and ring rolling. Although there is a certain improvement, it increases the number of firings, resulting in increased costs and reduced efficiency. The folding defects near the upper and lower end faces of the ring are mainly improved by controlling the height of the blank. However, in actual production, the fluctuation of the blank height and the axial metal deformation during ring rolling cause the end face folding problem, which cannot be completely improved.

[0005] Therefore, how to improve the deformation of the blank, increase the deformation of subsequent ring rolling, improve the grain size, completely solve the folding defects at the end face, and stabilize product quality has important technical and economic value for this type of high-tube thin-walled titanium alloy ring parts. Utility Model Content

[0006] One purpose of the utility model is to provide a hole expansion lever to increase the axial deformation of the blank during hole expansion, thereby improving the axial performance of the blank, and at the same time increase the middle thickness of the blank after hole expansion to prepare for further refinement of the structure and grains in subsequent ring rolling.

[0007] To achieve this object, the utility model adopts the following technical solutions: a hole-expanding horse lever, comprising a main body, both ends of which are sequentially provided with a transition portion, a positioning portion and a supporting portion; the transition portion is arranged at both ends of the main body, one end of the transition portion is connected to the main body, and the outer peripheral surface of the transition portion is an inner concave arc surface; the main body and the transition portion are used for matching and connecting with the blank; the positioning portion is arranged at one end of the transition portion away from the main body, and the cross-sectional area of ​​the positioning portion gradually increases in the direction away from the transition portion; the supporting portion is arranged at one end of the positioning portion away from the transition portion.

[0008] Preferably, the concave arc surface of the transition portion is a circular arc surface.

[0009] Preferably, the transition portion is connected to the positioning portion via a rounded corner.

[0010] Preferably, the radius R of the fillet 1 ≥60mm.

[0011] Preferably, the step height h of the transition portion is 10 mm-30 mm.

[0012] Preferably, the length L of the main body 2 The design height H of the ring product finally obtained after the blank is processed 1 1 / 4 of.

[0013] Preferably, the length L of the main body 2 The sum of the lengths of the transition sections at both ends is L 0 The height H of the final ring product obtained after the blank is processed 1 0.97 times of.

[0014] Another object of the utility model is to provide a hole-expanding horse rack to improve the quality reliability of the hole-expanding process of the horse rack, thereby improving the stability of product quality.

[0015] To achieve this purpose, the utility model adopts the following technical solution: a hole-expanding horse rack, comprising the hole-expanding horse lever and a horse rack bracket, wherein the supporting portion of the hole-expanding horse lever is installed on the horse rack bracket.

[0016] Preferably, the horse rack bracket includes a left bracket and a right bracket, each of which is provided with a receiving groove, the supporting part is installed in the receiving groove, the receiving groove is configured as a V-shaped groove, the bottom of the V-shaped groove is flat and can abut against the supporting part.

[0017] Another object of the utility model is to provide a hole expanding device, which can improve the yield rate of the hole expanded high-tube thin-walled titanium alloy ring parts.

[0018] To achieve this purpose, the utility model adopts the following technical solution: a hole expansion device, including the hole expansion horse frame and the press as described above, the press including a press upper anvil through which the press upper anvil cooperates with the press upper anvil to extrude the blank.

[0019] The beneficial effects of the utility model: the utility model provides a hole expansion horse lever, including a main body part, a transition part, a positioning part and a supporting part. The main body part and the transition part are processed in coordination with the blank, so the axial deformation of the blank during hole expansion is improved, thereby improving the axial performance of the blank, and can effectively control the height of the blank after hole expansion. At the same time, compared with traditional horse rack hole expansion, the middle thickness of the blank after hole expansion is increased to prepare for further refinement of the structure and grains in subsequent ring rolling.

[0020] The utility model also provides a hole-expanding horse rack, which adopts the hole-expanding horse lever and the horse rack bracket. The supporting part of the hole-expanding horse lever is installed on the horse rack bracket, thereby improving the quality reliability of the horse rack hole-expanding process and the quality stability of the high-tube thin-walled ring product.

[0021] The utility model also provides a hole expanding device. By adopting the hole expanding horse frame and the press, the yield rate of the high-tube thin-wall titanium alloy ring parts expanded by the hole expanding device of the utility model is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of a high-tube thin-walled titanium alloy ring;

[0023] Figure 2 It is a structural schematic diagram of the hole-enlarging horse lever of the utility model;

[0024] Figure 3 It is a three-dimensional schematic diagram of the utility model of the hole-enlarging horse lever;

[0025] Figure 4 It is a schematic diagram of the blank structure of the utility model;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the utility model hole expansion horse frame

[0027] Figure 6 This is a side view of the hole-expanding horse stand of the utility model;

[0028] Figure 7 This utility model Figure 6 Cross-section along BB.

[0029] In the figure:

[0030] 1. Hole-enlarging horse lever; 11. Main body; 12. Transition part; 13. Positioning part; 14. Support part; 2. Horse frame bracket; 21. Left bracket; 22. Right bracket; 3. Upper anvil of press; 4. Blank. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0035] In recent years, with the development of titanium alloy metallurgy technology and forming process, it has been more and more widely used in aerospace, new energy, petrochemical equipment, marine engineering and other fields. Among them, a series of high-tube thin-walled ring parts such as titanium alloy casings for aircraft engines, cathode rollers for new energy copper foil equipment, and titanium cylinders for marine engineering equipment play a key role in related field equipment with their high specific strength, high temperature resistance, corrosion resistance, and high performance stability.

[0036] At present, the titanium alloys widely used in the industrial field are mainly α-type, α+β-type, and β-type. The three types of titanium alloys are mainly distinguished by adding different α and β stabilizing elements. Titanium alloys cannot be refined by traditional heat treatment processes due to their phase transformation and recrystallization characteristics. Grain refinement is mainly carried out by deformation dynamic crystallization. In actual use, obtaining a uniformly refined grain structure is of great significance to titanium alloy components.

[0037] High-tube thin-walled titanium alloy ring parts such as Figure 4 As shown, the main ring height H 1 Greater than 600mm, outer diameter D and height H 1 All kinds of titanium alloy rings with a ratio of less than 3.3 and a wall thickness B in the range of 70mm-150mm. This type of ring has high requirements for grain size and ultrasonic inspection. The grain size is generally tested according to GB / T 6394, with a level >5 or even higher, and the ultrasonic flaw detection is tested according to GB / T 5193 and meets the A1 level.

[0038] Due to the high height of the high-tube thin-walled titanium alloy ring, after the traditional horse frame expansion + ring rolling process, some rings were found to have coarse grains in the middle area of ​​the ring after ultrasonic flaw detection, resulting in unqualified products with an unqualified rate of about 30%. In addition, due to the high height of the ring, folding defects often occur at the upper and lower end faces during the radial and axial ring rolling process, with a defect rate of about 10-15%, which can lead to product scrapping in severe cases.

[0039] The traditional improvement method for the problem of high-tube thin-walled titanium alloy ring parts failing flaw detection in the prior art is generally to increase the deformation of the initial blank forging or adjust the deformation of the horse frame expansion and ring rolling. Although there is a certain improvement, it increases the number of firings, resulting in increased costs and reduced efficiency. The folding defects near the upper and lower end faces of the ring parts (high-tube thin-walled titanium alloy ring parts) are mainly improved by controlling the height of the blank. However, in actual production, the fluctuation of the blank height and the axial metal deformation during ring rolling cause the end face folding problem to occur from time to time, which cannot be completely improved.

[0040] Therefore, how to improve the deformation of the blank, increase the deformation of subsequent ring rolling, improve the grain size, completely solve the folding defects at the end face, and stabilize product quality has important technical and economic value for this type of high-tube thin-walled titanium alloy ring parts.

[0041] To this end, the utility model provides a hole-expanding horse lever 1, such as Figure 3As shown, it includes a main body 11, and both ends of the main body 11 are sequentially provided with a transition portion 12, a positioning portion 13 and a support portion 14. The diameter of the main body 11 is the same as the diameter of the horse lever in the prior art; one end of the transition portion 12 is connected to the main body 11, and the other end is connected to the positioning portion 13, and the outer peripheral surface of the transition portion 12 is an inner concave arc surface; the positioning portion 13 is arranged at the end of the transition portion 12 away from the main body 11, and the cross-sectional area of ​​the positioning portion 13 gradually increases in the direction away from the transition portion 12; the support portion 14 is arranged at the end of the positioning portion 13 away from the transition portion 12. Among them, the main body 11 and the transition portion 12 cooperate with the blank 4 to perform hole expansion processing, and the positioning portion 13 can prevent the blank 4 from shifting during processing and control the height of the blank 4. Preferably, the main body 11, the transition portion 12, the positioning portion 13 and the support portion 14 of the hole expansion horse lever 1 are integrally formed, and then different parts are processed.

[0042] like Figure 2 As shown, the transition portion 12 in this embodiment is provided with a transitional inner concave arc surface, which cooperates with the blank 4 for hole expansion to improve the axial deformation of the blank 4 during hole expansion, thereby improving the axial performance of the blank 4. The cross-sectional area of ​​the positioning portion 13 gradually increases in the direction away from the transition portion 12, so that the outer side of the transition portion 12 at both ends has a taper. When expanding the hole, the positioning portion 13 can prevent the blank 4 from deviating from the hole expansion station on the one hand, and on the other hand, when the height of the blank 4 is close to the spacing distance of the positioning portions 13 at both ends (i.e., the sum of the lengths of the main body 11 and the two transition portions 12), it can be judged that the horse frame hole expansion process is completed, so that the height of the blank after hole expansion can be intuitively and effectively controlled.

[0043] In this embodiment, the concave arc surface of the transition portion 12 is a circular arc surface, and the arc radius of the circular arc surface is R 0 The transition portion 12 is connected to the positioning portion 13 by a fillet, and the radius of the fillet is R 1 As a preference, the radius of the fillet R 1 ≥60mm, preferably, R 1 =80mm.

[0044] like Figure 2 As shown, the difference between the maximum radius and the minimum radius of the transition portion 12 is h. In some embodiments, the difference h between the maximum radius and the minimum radius of the transition portion 12 is 10 mm to 30 mm. The difference h between the maximum radius and the minimum radius of the transition portion 12 is determined by the wall thickness B of the ring. The greater the wall thickness B of the ring, the greater the difference h between the maximum radius and the minimum radius of the transition portion 12. The arc radius R of the arc surface of the transition portion 12 is 0The ring is a high-tube thin-walled titanium alloy ring, which is the final product obtained after the blank 4 is expanded and rolled. The wall thickness and height of the final product are pre-designed parameters.

[0045] like Figure 2 As shown, the length L of the main body 11 2 is the ring height H 1 1 / 4 of the length L of the main body 11 0 The sum of the lengths of the transition sections 12 at both ends is L 0 is the ring height H 1 The length of the positioning portion 13 is L 1 As a preference, the length L of the positioning portion 13 is 1 The angle between the tapered hypotenuse of the positioning portion 13 and the horizontal direction is θ. In some embodiments, the angle between the tapered hypotenuse of the positioning portion 13 and the horizontal direction is θ=3°.

[0046] It is understandable that the length of the support portion 14 can be set according to actual needs to meet the use requirements, and the present invention does not limit this.

[0047] The utility model also provides a hole-expanding horse rack to improve the quality reliability of the hole-expanding process of the horse rack, thereby improving the stability of product quality. Figure 5 or Figure 7 As shown, the reaming horse frame includes the reaming horse lever 1 and the horse frame bracket 2 . The horse frame bracket 2 can be placed on a processing operating table, and the supporting portion 14 of the reaming horse lever 1 is installed on the horse frame bracket 2 .

[0048] In some embodiments, the horse frame bracket 2 includes a left bracket 21 and a right bracket 22, and both the left bracket 21 and the right bracket 22 are provided with a receiving groove, and the support portion 14 is installed in the receiving groove. In other embodiments, the left bracket 21 and the right bracket 22 can also be connected and arranged integrally at the bottom.

[0049] In some embodiments, Figure 6 As shown, the accommodating groove is configured as a V-shaped groove, the bottom of which is a plane and can abut against the supporting portion 14 , thereby providing better support and positioning for the hole-reaming horse lever 1 .

[0050] The utility model also provides a hole expanding device, which adopts the above-mentioned hole expanding horse frame and press, the press includes a press upper anvil 3, and the press upper anvil 3 is used to cooperate with the hole expanding horse 1 to extrude the blank. The yield rate of the high-tube thin-walled titanium alloy ring parts expanded by the hole expanding device of the utility model is greatly improved.

[0051] The hole enlarging process of the utility model is summarized as follows:

[0052] like Figure 5 As shown, the reaming horse 1 is inserted into the inner hole of the blank 4 and placed on the horse frame bracket 2. The blank 4 is placed in the middle of the reaming horse 1. The anvil 3 on the press moves back and forth in the vertical direction to extrude the blank 4. The amount of deformation each time is about 15%-20% of the wall thickness of the blank 4, so that the inner wall of the blank 4 fits the main body 11 and the transition part 12 of the reaming horse 1 and deforms circumferentially and axially. In a single extrusion process, when the anvil 3 on the press moves upward and returns, the operating machine is used to rotate the blank 4 by a small angle to the undeformed wall thickness area of ​​the blank 4. The anvil 3 on the press moves downward again for the next extrusion stroke, so that the blank 4 continues to deform circumferentially and axially. After one reciprocating cycle, the wall thickness of the blank 4 is thinned, the diameter is increased, and the height of the blank 4 is also increased. The above-mentioned reaming method is repeated until the wall thickness at both ends of the blank 4 reaches the design requirements of the subsequent ring rolling process, and the height is close to the deformation zone length of the special-shaped horse (the sum of the lengths of the main body 11 and the two transition parts 12 L 0 ), the horse frame hole expansion process is completed, and the blank 4 obtained after hole expansion is the blank 4 for the subsequent ring rolling process. The blank 4 after hole expansion is subjected to the subsequent ring rolling process according to the process and the specified heating temperature to obtain the final ring product.

[0053] In some embodiments, in order to better match the hole-expanding lever 1 of the present invention for hole-expanding and achieve a better hole-expanding effect, the parameters of the blank 4 may be adjusted.

[0054] Before the traditional horse rack is expanded, the inner diameter ID of the blank 4 needs to be 10mm-20mm larger than the diameter of the traditional straight horse rack. 2 Need to be higher than the ring height H 1 , height difference 5mm-15mm.

[0055] Combined with the structural features of the hole-expanding horse bar 1 of the utility model, considering the metal deformation law of the horse frame hole expansion, such as Figure 1 and Figure 4 As shown, for the blank 4 before the horse frame expansion, the inner diameter ID is required to be d+2×h+30, in mm, and the meaning of each symbol is as mentioned above; the height H of the blank 4 2 =H 1 ×K, unit is mm; where H 1 is the ring height, K is the value coefficient, the value range of the value coefficient K is 0.85-0.92, and the larger the design value of the ring outer diameter D, the smaller the K value.

[0056] By adjusting the parameters of the blank 4, the height of the blank 4 can be appropriately reduced, and the amount of axial deformation of the blank 4 during hole expansion can be further increased, thereby better improving the axial mechanical properties of the final ring. Moreover, by adjusting the parameters of the blank 4, the height and wall thickness of the blank 4 after hole expansion are small, and the folding defects at the end face caused by the axial deformation of the metal and the end face cone roller rolling can be further avoided during the subsequent ring rolling, thereby improving the surface quality of the product and avoiding the risk of scrapping due to folding.

[0057] The reaming horse 1 provided by the utility model is processed in cooperation with the blank 4 through the main body 11 and the transition part 12, which improves the axial deformation of the blank 4 during reaming, thereby improving the axial performance of the blank 4, and can effectively control the height of the blank after reaming. At the same time, compared with the traditional horse frame reaming, the middle thickness of the blank after reaming is increased to prepare for the subsequent ring rolling to further refine the structure and grain. The reaming horse frame provided by the utility model adopts the above-mentioned reaming horse 1 and the horse frame bracket. The horse frame bracket 2 can be placed on the processing operating table, and the support part 14 of the reaming horse 1 is installed on the horse frame bracket 2, which improves the quality reliability of the horse frame reaming process, thereby improving the product quality stability of high-tube thin-walled titanium alloy ring parts.

[0058] According to the above design requirements, in an embodiment of a practical application:

[0059] The design dimensions of a TA1 titanium alloy ring are: φ2770 / φ2620x640, calculated wall thickness B=75mm, height H=640mm, outer diameter D=2770mm.

[0060] Design the size of the special-shaped horse bar according to the size of the ring: d = 500mm, L 2 =640 / 4=160mm,h=12mm,L 0 =640×0.97≈620mm.

[0061] According to the size of the ring, the size of the blank 4 before the horse rack expansion is designed: inner diameter ID = 500 + 2 × 12 + 30 = 554 ≈ 560mm, height H 2 =640×0.9=576mm, the outer diameter is converted according to the volume of the blank.

[0062] The dimensions of the blank 4 after the hole expansion by the horse frame are: height ≈ 620mm, wall thickness at both ends ≈ 110mm, and wall thickness in the middle ≈ 134mm.

[0063] Among them, the heating temperature of the horse frame expansion process is 800℃, and the final forging temperature is 630℃; the heating temperature of the ring rolling process is 750℃, and the final forging temperature is 630℃.

[0064] The expanded blank 4 obtained by expanding the hole with the expanding horse 1, the expanding horse frame and the expanding device of the utility model has a thicker wall thickness in the middle and a slightly thinner wall thickness at both ends, and a smaller height than the traditional blank 4 design. When deformed in the subsequent ring rolling process, the middle area is deformed more greatly along the circumferential direction, which will improve the uniformity of the middle structure and grain size. At the same time, the middle metal is also appropriately deformed along the axial direction, which can improve the axial performance of the ring.

[0065] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A hole-enlarging horse bar, characterized in that: include: A main body (11), wherein both ends of the main body (11) are sequentially provided with a transition portion (12), a positioning portion (13) and a supporting portion (14); One end of the transition portion (12) is connected to the main body (11), and the outer peripheral surface of the transition portion (12) is an inner concave arc surface; the main body (11) and the transition portion (12) are used for matching and connecting with the blank (4); The positioning portion (13) is arranged at an end of the transition portion (12) away from the main body portion (11), and the cross-sectional area of ​​the positioning portion (13) gradually increases in a direction away from the transition portion (12); The supporting portion (14) is arranged at an end of the positioning portion (13) away from the transition portion (12).

2. The hole-enlarging horse bar according to claim 1, characterized in that: The concave arc surface of the transition portion (12) is a circular arc surface.

3. The hole-enlarging horse bar according to claim 1, characterized in that: The transition portion (12) is connected to the positioning portion (13) via a rounded corner.

4. The hole-enlarging horse bar according to claim 3, characterized in that: The radius R1 of the rounded corner is ≥60 mm.

5. The hole-enlarging horse bar according to claim 1, characterized in that: The difference h between the maximum radius and the minimum radius of the transition portion (12) is 10 mm to 30 mm.

6. The hole-enlarging horse bar according to claim 1, characterized in that: The length L2 of the main body (11) is 1 / 4 of the height H1 of the ring product finally obtained after processing the blank.

7. The hole-enlarging horse bar according to claim 1, characterized in that: The sum L0 of the length L2 of the main body (11) and the length of the transition portions (12) at both ends is 0.97 times the height H1 of the ring product finally obtained after the blank is processed.

8. A hole expansion horse stand, characterized in that: It comprises a hole-enlarged horse lever (1) and a horse frame bracket (2) as claimed in any one of claims 1 to 7, wherein the support portion (14) of the hole-enlarged horse lever (1) is mounted on the horse frame bracket (2).

9. The hole expansion horse stand according to claim 8, characterized in that: The horse frame bracket (2) comprises a left bracket (21) and a right bracket (22), and the left bracket (21) and the right bracket (22) are both provided with a receiving groove, and the support portion (14) is installed in the receiving groove, and the receiving groove is configured as a V-shaped groove, and the bottom of the V-shaped groove is a plane and can abut against the support portion (14).

10. A hole expanding device, characterized in that: It comprises a reaming horse and a press as described in any one of claims 8 to 9, wherein the press comprises an upper anvil (3) of the press, and the upper anvil (3) of the press is used to cooperate with the reaming horse (1) to extrude the blank (4).

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