阅读说明：本技术 高筒铝合金环制坯装置及制坯方法 (High-cylinder aluminum alloy ring blank making device and blank making method ) 是由 刘平军 韩军 佘毅赟 刘铭皓 赵彦民 于 2020-06-02 设计创作，主要内容包括：一种高筒铝合金环制坯装置及方法,装置包括制坯圆筒模、长冲头、短冲头、第一退料模、第二退料模和退料冲头,圆形铝坯在制坯圆筒模内,长冲头和短冲头压入圆形铝坯,第一退料模在制坯圆筒模和圆形铝坯底部,第二退料模在第一退料模底部,退料冲头在圆形铝坯顶部。方法包括S1：圆形铝坯放置在制坯圆筒模内；S2：长冲头和短冲头压入圆形铝坯；S3：制坯圆筒模和圆形铝坯承载在第一退料模上,第二退料模支撑在第一退料模底部；S4：长冲头和短冲头退出；S5：第一退料模拆卸,制坯圆筒模承载在第二退料模上；S6：圆形铝坯退出。具有操作简单、可提高成型效率、能避免喇叭口、能克服不均匀性及表面缺陷、适于批量生产的优点。(A high-cylinder aluminum alloy ring blank making device and a method thereof are disclosed, the device comprises a blank making cylinder die, a long punch, a short punch, a first material returning die, a second material returning die and a material returning punch, wherein a round aluminum blank is arranged in the blank making cylinder die, the long punch and the short punch are pressed into the round aluminum blank, the first material returning die is arranged at the bottom of the blank making cylinder die and the round aluminum blank, the second material returning die is arranged at the bottom of the first material returning die, and the material returning punch is arranged at the top of the round aluminum blank. The method comprises the following steps of S1: placing the round aluminum blank in a blank making cylindrical die; s2: pressing a long punch and a short punch into the round aluminum blank; s3: the blank making cylindrical die and the round aluminum blank are borne on the first material returning die, and the second material returning die is supported at the bottom of the first material returning die; s4: withdrawing the long punch and the short punch; s5: the first material returning die is disassembled, and the blank making cylinder die is loaded on the second material returning die; s6: and (4) withdrawing the round aluminum blank. The method has the advantages of simple operation, improved molding efficiency, no horn mouth, no unevenness and surface defect, and suitability for mass production.)

1. The utility model provides a high section of thick bamboo aluminum alloy ring system base device which characterized in that: including base cylinder mould (1), long drift (2), short drift (3), first annealing mould (4), second annealing mould (5) and material returned drift (6) that are used for placing circular aluminium base (7), circular aluminium base (7) are placed in base cylinder mould (1), long drift (2) and short drift (3) are impressed in circular aluminium base (7) to the centre from the center at circular aluminium base (7) both ends respectively, first annealing mould (4) support base cylinder mould (1) and circular aluminium base (7) bottom, second annealing mould (5) support base cylinder mould (4) bottom, material returned drift (6) set up at circular aluminium base (7) top.

2. The high-cylinder aluminum alloy ring blank making device according to claim 1, characterized in that: the inner cavity of the blank making cylinder die (1) and the outer walls of the long punch head (2) and the short punch head (3) have conicity.

3. The high-cylinder aluminum alloy ring blank making device according to claim 2, characterized in that: the diameter of the small-diameter end of the short punch (3) is larger than that of the small-diameter end of the long punch (2), and the diameter of the large-diameter end of the short punch (3) is larger than that of the large-diameter end of the long punch (2).

4. The high-cylinder aluminum alloy ring blank making device according to claim 3, characterized in that: the large-diameter end of the short punch (3) is provided with a straight cylinder section (31).

5. The high-cylinder aluminum alloy ring blank making device according to claim 4, characterized in that: the diameter of the inner cavity of the first stripping die (4) is larger than the diameter of the large-diameter end of the long punch (2).

6. The high-cylinder aluminum alloy ring blank making device according to claim 5, characterized in that: the diameter of the inner cavity of the second material returning die (5) is larger than the diameter of the large-diameter end of the inner cavity of the blank making cylindrical die (1).

7. The high-cylinder aluminum alloy ring blank making device according to claim 6, characterized in that: the diameter of the material returning punch head (6) is smaller than the diameter of the small-diameter end of the inner cavity of the blank making cylindrical die (1).

8. A high-cylinder aluminum alloy ring blank making method, which is carried out by the high-cylinder aluminum alloy ring blank making device of claim 7, and comprises the following steps:

s1: placing the circular aluminum blank (7) in the blank-making cylindrical die (1), wherein the small-diameter end of the inner cavity of the blank-making cylindrical die (1) faces downwards;

s2: respectively pressing a long punch (2) and a short punch (3) into the round aluminum blank (7) from the centers of the upper end and the lower end of the round aluminum blank (7) to the middle;

s3: turning over the blank-making cylindrical die (1), bearing the blank-making cylindrical die (1) and the round aluminum blank (7) on the first material-returning die (4), and supporting the second material-returning die (5) at the bottom of the first material-returning die (4);

s4: pressing the short punch (3) downwards until the long punch (2) and the short punch (3) are all withdrawn from the first stripping die (4);

s5: disassembling the first material returning die (4), turning the blank making cylinder die (1) and bearing the blank making cylinder die on the second material returning die (5);

s6: and (3) pressing down the material returning punch head (6) to drive the round aluminum blank (7) to be withdrawn from the second material returning die (5).

Technical Field

The invention mainly relates to a blank making technology of a high-cylinder aluminum alloy ring piece, in particular to a blank making device and a blank making method of a high-cylinder aluminum alloy ring.

Background

The forming process of the existing high-tube aluminum alloy ring piece generally comprises the following steps: heating → pier thickening → punching → core rod drawing → flat end face → repair → heating → ring rolling, because the forging temperature range of the aluminum alloy is narrower, for some aluminum alloys with larger height-diameter ratio, the blank making before the ring rolling often needs two or more fire times, and the problem that easily exists in the production process is: 1. the shape of the blank is irregular, so that a bell mouth is easy to appear in the ring rolling process, and the machining allowance is large; 2. surface defects are easy to occur in the blank making process, polishing and repairing are needed, and the process is complicated and overlong; 3. the molding fire frequency is more, and the product performance is influenced; 4. the product performance is not uniform due to the fact that deformation of all parts of the same product is inconsistent; 5. the variation of each product in mass production is inconsistent, resulting in differences in performance. For some products with larger performance margins, the method does not affect the use of the products, but for some products with strict use conditions, the consistency of the products needs to be improved.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a high-cylinder aluminum alloy ring blank manufacturing device and a blank manufacturing method which are simple to operate, can improve the forming efficiency, can effectively avoid a bell mouth in the ring rolling process, can overcome non-uniformity and surface defects and are suitable for batch production.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a high section of thick bamboo aluminum alloy ring base device, is including base cylinder mould, long drift, short drift, first material returned mould, second material returned mould and the material returned drift of placing circular aluminium base, circular aluminium base is placed in base cylinder mould, long drift and short drift are impressed in the circular aluminium base to the centre from the center at circular aluminium base both ends respectively, first material returned mould supports base cylinder mould and circular aluminium base bottom, second material returned mould supports in first material returned mould bottom, the material returned drift sets up at circular aluminium base top.

As a further improvement of the above technical solution:

the inner cavity of the blank making cylinder die and the outer walls of the long punch and the short punch are provided with conicity.

The diameter of the small-diameter end of the short punch is larger than that of the small-diameter end of the long punch, and the diameter of the large-diameter end of the short punch is larger than that of the large-diameter end of the long punch.

And a section of straight cylinder section is arranged at the large-diameter end of the short punch.

The diameter of the inner cavity of the first stripping die is larger than the diameter of the large-diameter end of the long punch.

The diameter of the inner cavity of the second material returning die is larger than the diameter of the large-diameter end of the inner cavity of the blank making cylindrical die.

The diameter of the material returning punch is smaller than the diameter of the small-diameter end of the inner cavity of the blank making cylinder die.

The high-cylinder aluminum alloy ring blank making method is carried out by the high-cylinder aluminum alloy ring blank making device, and comprises the following steps of:

s1: placing the round aluminum blank in a blank making cylindrical die, wherein the small-diameter end of the inner cavity of the blank making cylindrical die faces downwards;

s2: respectively pressing a long punch and a short punch into the round aluminum blank from the centers of the upper end and the lower end of the round aluminum blank to the middle;

s3: turning over the blank making cylindrical die, bearing the blank making cylindrical die and the round aluminum blank on a first material returning die, and supporting a second material returning die at the bottom of the first material returning die;

s4: pressing the short punch downwards until the long punch and the short punch are all withdrawn from the first stripping die;

s5: disassembling the first material returning die, turning the blank making cylindrical die and bearing the blank making cylindrical die on the second material returning die;

s6: and pressing the material returning punch downwards to drive the circular aluminum billet to be withdrawn from the second material returning die.

Compared with the prior art, the invention has the advantages that:

when the high-cylinder aluminum alloy ring blank manufacturing device is used, a round aluminum blank is placed in a blank manufacturing cylinder die, a long punch and a short punch are respectively pressed into the round aluminum blank from the center of the upper end and the lower end of the round aluminum blank to the middle, the blank manufacturing cylinder die is turned over, the blank manufacturing cylinder die and the round aluminum blank are borne on a first material returning die, a second material returning die is supported at the bottom of the first material returning die, the short punch is pressed downwards until the long punch and the short punch are all withdrawn from the first material returning die, the first material returning die is disassembled, the blank manufacturing cylinder die is turned over and borne on the second material returning die, and finally the material returning punch is pressed downwards to drive the round aluminum blank to be withdrawn from the second material returning die. Compared with the traditional structure, the blank making device adopts a double-punch bidirectional pressing mode to form the inner cavity, so that the operability is strong and the efficiency is high; the inner cavity can be automatically corrected into a straight cylindrical surface in the descending process of the short punch, the uniformity of the wall thickness of the cylindrical part and the perpendicularity of the inner diameter and the outer diameter and the end surface are ensured, and a horn mouth in the ring rolling process can be effectively avoided. Meanwhile, the blank making of the barrel part can be realized by one fire, the non-uniformity and the surface defects of the forming are avoided by using the die, the effect is obvious, and the method is suitable for batch production. The high-cylinder aluminum alloy ring blank making method of the invention is carried out by the high-cylinder aluminum alloy ring blank making device, so the technical effects corresponding to the high-cylinder aluminum alloy ring blank making device are achieved.

Drawings

FIG. 1 is a schematic structural view (opposed punching state) of a high-cylinder aluminum alloy ring blank making device according to the present invention.

FIG. 2 is a schematic structural view (in a compacted state) of the high-cylinder aluminum alloy ring blank making device of the invention.

FIG. 3 is a schematic structural view (material returning state) of the high-cylinder aluminum alloy ring blank manufacturing device of the invention.

FIG. 4 is a schematic structural view of a short punch in the high-cylinder aluminum alloy ring blank making device of the invention.

FIG. 5 is a schematic structural view of the high-cylinder aluminum alloy ring blank of the present invention.

FIG. 6 is a flow chart of the high-cylinder aluminum alloy ring blank manufacturing method of the invention.

The reference numerals in the figures denote:

1. making a blank cylindrical die; 2. a long punch; 3. a short punch; 31. a straight cylinder section; 4. a first material returning die; 5. a second stripper die; 6. a material returning punch; 7. and (5) round aluminum billets.

Detailed Description

The invention will be described in further detail below with reference to the drawings and specific examples.

Fig. 1 to 5 show an embodiment of the high-cylinder aluminum alloy ring blank making device of the invention, which comprises a blank making cylinder die 1 for placing a circular aluminum blank 7, a long punch 2, a short punch 3, a first material returning die 4, a second material returning die 5 and a material returning punch 6, wherein the circular aluminum blank 7 is placed in the blank making cylinder die 1, the long punch 2 and the short punch 3 are respectively pressed into the circular aluminum blank 7 from the center of two ends of the circular aluminum blank 7 to the middle, the first material returning die 4 is supported at the bottom of the blank making cylinder die 1 and the circular aluminum blank 7, the second material returning die 5 is supported at the bottom of the first material returning die 4, and the material returning punch 6 is arranged at the top of the circular aluminum blank 7. During the use, the round aluminum blank 7 is placed in the blank making cylinder die 1, the long punch 2 and the short punch 3 are respectively pressed into the round aluminum blank 7 from the center of the upper end and the lower end of the round aluminum blank 7 to the middle, the blank making cylinder die 1 is turned, the blank making cylinder die 1 and the round aluminum blank 7 are borne on the first material returning die 4, the second material returning die 5 is supported at the bottom of the first material returning die 4, the short punch 3 is pressed down until the long punch 2 and the short punch 3 are completely withdrawn from the first material returning die 4, the first material returning die 4 is disassembled, the blank making cylinder die 1 is turned and borne on the second material returning die 5, and finally the material returning punch 6 is pressed down to drive the round aluminum blank 7 to be withdrawn from the second material returning die 5. Compared with the traditional structure, the blank making device adopts a double-punch bidirectional pressing mode to form the inner cavity, so that the operability is strong and the efficiency is high; the inner cavity can be automatically corrected into a straight cylinder surface in the descending process of the short punch 3, the uniformity of the wall thickness of the cylinder part and the perpendicularity of the inner diameter and the outer diameter and the end surface are ensured, and a horn mouth in the ring rolling process can be effectively avoided. Meanwhile, the blank making of the barrel part can be realized by one fire, the non-uniformity and the surface defects of the forming are avoided by using the die, the effect is obvious, and the method is suitable for batch production.

In this embodiment, the inner cavity of the blank-making cylindrical die 1 and the outer walls of the long punch 2 and the short punch 3 have tapers. The taper is convenient for material returning on one hand, and the wall thickness of the blank can be ensured to be uniform on the other hand.

In this embodiment, the small diameter end of the short punch 3 is larger than the small diameter end of the long punch 2, and the large diameter end of the short punch 3 is larger than the large diameter end of the long punch 2. The arrangement is favorable for pressing out the center punch.

In this embodiment, the large diameter end of the short punch 3 is provided with a straight cylinder section 31. The straight cylinder section 31 further plays a role in automatically correcting the inner cavity into a straight cylinder surface in the process of running, so that the uniformity of the wall thickness of the cylinder and the perpendicularity between the inner diameter and the outer diameter and the end surface are ensured, and a horn mouth in the ring rolling process can be effectively avoided.

In this embodiment, the inner cavity diameter of the first stripper die 4 is larger than the large diameter end diameter of the long punch 2. This arrangement facilitates the material return operation of the long punch 2.

In this embodiment, the diameter of the inner cavity of the second stripper die 5 is larger than the diameter of the large-diameter end of the inner cavity of the blank-making cylindrical die 1. Thus, the material returning operation of the blank-making cylindrical die 1 is facilitated.

In this embodiment, the diameter of the material returning punch 6 is smaller than the diameter of the small-diameter end of the inner cavity of the blank making cylindrical die 1. The arrangement is convenient for the material returning operation of the round aluminum billet 7.

Fig. 1 to 6 show an embodiment of the high-cylinder aluminum alloy ring blank manufacturing method of the invention, which is performed by the high-cylinder aluminum alloy ring blank manufacturing device, and comprises the following steps:

s1: placing the round aluminum blank 7 in the blank-making cylindrical die 1, wherein the small-diameter end of the inner cavity of the blank-making cylindrical die 1 faces downwards;

s2: respectively pressing a long punch 2 and a short punch 3 into the round aluminum billet 7 from the center of the upper end and the lower end of the round aluminum billet 7 to the middle;

s3: turning over the blank-making cylindrical die 1, bearing the blank-making cylindrical die 1 and the round aluminum blank 7 on the first material-returning die 4, and supporting the second material-returning die 5 at the bottom of the first material-returning die 4;

s4: the short punch 3 is pressed downwards until the long punch 2 and the short punch 3 are all withdrawn from the first stripping die 4;

s5: disassembling the first material returning die 4, turning the blank making cylinder die 1 and bearing the blank making cylinder die on the second material returning die 5;

s6: and the material returning punch 6 is pressed downwards to drive the round aluminum billet 7 to be withdrawn from the second material returning die 5.

The method adopts a double-punch bidirectional pressing mode to form the inner cavity, and has strong operability and high efficiency; the inner cavity can be automatically corrected into a straight cylinder surface in the descending process of the short punch 3, the uniformity of the wall thickness of the cylinder part and the perpendicularity of the inner diameter and the outer diameter and the end surface are ensured, and a horn mouth in the ring rolling process can be effectively avoided. Meanwhile, the blank making of the barrel part can be realized by one fire, the non-uniformity and the surface defects of the forming are avoided by using the die, the effect is obvious, and the method is suitable for batch production.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.