CN211660865U - Metal forming device - Google Patents
Metal forming device Download PDFInfo
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- CN211660865U CN211660865U CN202020163046.6U CN202020163046U CN211660865U CN 211660865 U CN211660865 U CN 211660865U CN 202020163046 U CN202020163046 U CN 202020163046U CN 211660865 U CN211660865 U CN 211660865U
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Abstract
The utility model relates to the field of metal forming, and discloses a metal forming device, which comprises a base, wherein a first motor, a mold and a hollow shaft sleeve are all fixed on the base, a triangular chuck is fixedly arranged on the inner wall of the hollow shaft sleeve, one end of a shell is sleeved on the outer side wall of the hollow shaft sleeve, the other end of the shell is sleeved on the outer side wall of the mold, and the outer wall of the shell is in gear engagement with an output shaft of the first motor; the second motor and the limiting disc are fixed in the shell, the limiting disc is fixed on one side of the die, and the track disc is meshed with an output shaft gear of the second motor; the plurality of extrusion blocks are arranged circumferentially and adjacent two extrusion blocks are in sliding contact with each other; one end of each extrusion block is respectively limited in each limiting hole circumferentially distributed on the limiting disc, and the other end of each extrusion block is respectively limited in each track hole circumferentially distributed on the track disc; the hollow shaft sleeve, the track disc and the limiting disc are coaxially arranged in sequence. The device can greatly reduce the external loading force required during metal forming, and can realize the purpose of metal plastic deformation by using smaller force.
Description
Technical Field
The utility model relates to a metal forming field, in particular to metal forming's device.
Background
The traditional forming method of the metal material mainly comprises liquid forming and pressure processing forming. Liquid molding is a molding method mainly based on casting technology; the pressure forming belongs to solid forming, and is a method for forming by applying a certain positive pressure to a blank to force the blank to deform and flow, and the representative processes are extrusion, rolling, forging and the like. The positive pressure applied by solid state forming must be greater than the compressive strength of the billet in the state in which it is in order for the billet to deform and flow, and a greater positive pressure is required if the billet being formed is ferrous metal or in a cold state. This places high demands on the capabilities of the device. In addition, the applied force is large, the abrasion is serious, and the requirements on equipment and the material of a die are high.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: to the problem that exists among the prior art, the utility model provides a fashioned device of metal, required additional loading power when this device can the greatly reduced metal shaping uses less power just can realize metal plastic deformation's purpose.
The technical scheme is as follows: the utility model provides a metal forming method, which comprises the following steps: s1: preparing a cylindrical metal blank; s2: winding n circles of high-strength thin strips on the outer side wall of the metal blank; s3: preheating the metal blank wound with the thin strip to 0-0.6 Tm, wherein the Tm is the melting point of the metal blank; s4: and fixing the position of the metal blank, simultaneously continuously applying a tangential force and a radial force pointing to the direction of the metal blank on the outer ring of the thin strip according to the winding direction of the thin strip, wherein the metal blank generates plastic deformation under the winding action of the thin strip, and the plastic-deformed metal blank enters a die to form a product.
Further, the friction between the metal blank and the thin strip is greater than the friction between the turns of the thin strip, and the tangential force is less than the tensile strength of the thin strip.
Preferably, the thin strip is divided into two parts, one part is pi D, the other part is L-pi D, D is the diameter of the cylindrical metal blank, and L is the length of the thin strip; one surface of the section of thin strip with the length of pi D is processed to increase the sliding friction coefficient, and the surface is contacted with the outer wall of the metal blank; and the other surface of the section of thin strip with the length of pi D and the two surfaces of the section of thin strip with the length of L-pi D are processed for reducing the sliding friction coefficient.
Preferably, the method of increasing a sliding friction coefficient process includes: surface roughening, plating or adding friction-increasing particles or fibers; the method of the sliding friction coefficient reducing process includes: surface smoothing, plating of antifriction material coating or smearing of lubricant.
The utility model also provides a metal forming device, which comprises a base, wherein the first motor, the die and the hollow shaft sleeve are fixed on the base, the triangular chuck is fixedly arranged on the inner wall of the hollow shaft sleeve, one end of the shell is sleeved on the outer side wall of the hollow shaft sleeve, the other end of the shell is sleeved on the outer side wall of the die, and the outer wall of the shell is in gear engagement with the output shaft of the first motor; the second motor and the limiting disc are fixed in the shell, the limiting disc is fixed on one side of the die, and the track disc is meshed with an output shaft gear of the second motor; the plurality of extrusion blocks are arranged in the circumference and are in sliding contact with each other; one end of each extrusion block is respectively limited in each limiting hole circumferentially distributed on the limiting disc, and the other end of each extrusion block is respectively limited in each track hole circumferentially distributed on the track disc; the hollow shaft sleeve, the track disc and the limiting disc are sequentially and coaxially arranged.
Furthermore, one end of each extrusion block is limited in each limiting hole through a limiting bolt, and the other end of each extrusion block is limited in each track hole through a track bolt.
Furthermore, one end of the shell is rotatably connected with the outer side wall of the hollow shaft sleeve through a first bearing, and the other end of the shell is rotatably connected with the outer side wall of the mold through a second bearing.
Preferably, each limiting hole is distributed on the limiting disc in a radial circumferential manner; each track hole is distributed on the track disc in a throwing-shaped circumference distribution.
Preferably, each of the limiting holes and each of the track holes are kidney-shaped holes.
Preferably, each of the pressing blocks is triangular prism-shaped, and the opposite surfaces of two adjacent pressing blocks are in contact with each other.
The principle and the beneficial effects are as follows: in the metal forming process, the metal blank is subjected to rheological by winding the thin strip which is gradually tightened on the outer side wall of the metal blank, and then the rheological metal blank is guided into a die for forming, wherein the tangential force T1 applied to the innermost thin strip wound on the metal blank and the tangential force T2 applied to the outermost thin strip meet the formula (1):
wherein mu is a friction factor between the thin strip and the metal blank; phi is the total angle of the thin strip wound around the metal blank, phi is 360 degrees when the thin strip is wound around the metal blank for 1 turn, and phi is n multiplied by 360 degrees when the thin strip is wound around the metal blank for n turns;
the positive pressure N generated by the innermost thin strip on the metal blank satisfies the formula (2):
ɵ is the wrapping angle of the innermost thin strip to the metal blank;
combining and finishing the formulas (1) and (2) to obtain:
according to the actual wrapping condition, the wrapping angle of the innermost circle of the thin strip to the metal blank is generally 360 degrees, and then
；
The positive pressure N of the strip against the metal blank is therefore proportional to the tangential force T2 to which the outermost turn of strip is subjected, and is exponential to the number N of windings, and therefore it can be demonstrated that: the wrapping force (positive pressure) of the thin strip on the metal blank is far greater than the positive pressure directly acting on the blank. And the utility model discloses an among the metal forming process, the drive power that the metal blank warp comes from the positive pressure that the cramp power of thin area produced promptly, and can know by above-mentioned analysis, this positive pressure becomes the exponential relation with applied external force, required additional loading power when can greatly reduced metal forming uses less power just can realize metal plastic deformation's purpose.
Drawings
FIG. 1 is an overall configuration view of a metal forming apparatus;
FIG. 2 is an exploded view of the fit between the limiting plate, the track plate and the extrusion block;
fig. 3 to 6 are perspective views of the cooperation between the limiting disc, the track disc and the extrusion block;
fig. 7 is a schematic top view of a pure aluminum billet wrapped with a thin steel strip on the outer wall thereof, placed in an extrusion block and tightened.
Detailed Description
The present invention will be described in detail with reference to the following embodiments and accompanying drawings.
Embodiment 1:
the embodiment provides a metal forming method, which mainly comprises the following steps:
s1: preparing a cylindrical pure aluminum blank with the diameter D of 20 cm;
s2: 3 circles of high-strength thin steel strips with the length L of 188.4cm are wound on the outer side wall of the pure aluminum blank; the friction between the pure aluminum blank and the thin steel strip is required to be larger than the friction between the rings of the thin steel strip. The method can be realized by the following steps:
dividing a thin steel strip into two parts, wherein one part is 62.8cm in length, and the other part is 125.6 cm; one surface of the section of thin steel strip with the length of 62.8cm is subjected to surface roughening treatment so as to increase the sliding friction coefficient of the surface; when the pure aluminum blank is wound, the surface is contacted with the outer wall of the pure aluminum blank;
the other surface of the section of thin steel strip with the length of 62.8cm and the two surfaces of the section of thin steel strip with the length of 125.6cm are subjected to surface smoothing treatment so as to reduce the sliding friction coefficient of the section of thin steel strip; when winding the pure aluminum billet, the part of the thin steel strip with the smooth surface is wound outside the part of the thin steel strip with the rough surface.
S3: preheating the pure aluminum blank wound with the steel thin strip to 300 ℃;
s4: fixing the position of the pure aluminum blank, and continuously applying 50MPa of tangential force and 80MPa of radial force pointing to the direction of the pure aluminum blank on the outer ring of the steel thin strip according to the winding direction of the steel thin strip. In the process of continuously applying tangential force and radial force to the steel thin strip, the steel thin strip is gradually tightened due to the existence of friction force and finally tightly wraps the pure aluminum blank, the wrapping force is increased along with the continuous action of the tangential force and the radial force, when the wrapping force exceeds the compressive strength of the pure aluminum blank, the pure aluminum blank starts to be plastically deformed, and the plastically deformed pure aluminum blank enters a forming die to be formed through diversion to form a product.
Embodiment 2:
this embodiment provides a metal forming's device, as shown in fig. 1 to 7, including base 1, first motor 2, mould 3 and hollow shaft sleeve 4 are all fixed on base 1, triangle chuck 5 (preferred general model is SC 315's triangle chuck) sets firmly at hollow shaft sleeve 4 inner wall, a pot head of the casing 6 of cylinder is established at hollow shaft sleeve 4 lateral wall, and rotate with the lateral wall of hollow shaft sleeve 4 through first bearing 15 and be connected, another pot head of casing 6 is established at mould 3 lateral wall, and rotate with the lateral wall of mould 3 through second bearing 16 and be connected, and have round meshing tooth on the outer wall of casing 6, can form gear engagement between the meshing tooth on the lateral wall of casing 6 and the output shaft of first motor 2. The second motor 7 and the limiting disc 8 are fixed in the shell 6, the limiting disc 8 is fixed on one side of the die 3, and a plurality of waist-shaped limiting holes 11 are radially and circumferentially distributed on the limiting disc 8; the edge of the track disk 9 is provided with meshing teeth, so that gear meshing can be formed between the meshing teeth and the meshing teeth on the output shaft of the second motor 7, and a plurality of kidney-shaped track holes 12 are distributed on the track disk 9 in a throwing shape in the circumferential direction.
A plurality of triangular columnar extrusion blocks 10 are arranged circumferentially, opposite faces of two adjacent extrusion blocks 10 are in sliding contact with each other, one end of each extrusion block 10 is limited in each limiting hole 11 circumferentially distributed on the limiting disc 8 through a limiting bolt 13, and the other end of each extrusion block 10 is limited in each track hole 12 circumferentially distributed on the track disc 9 through a track bolt 14. The hollow shaft sleeve 4, the track disc 9 and the limiting disc 8 are sequentially and coaxially arranged, and the limiting disc 8 and the track disc 9 are parallel to each other.
The working principle of the metal forming device is as follows:
firstly, winding 3 circles of high-strength steel thin strips on the outer side wall of a cylindrical pure aluminum blank; then preheating the pure aluminum blank wound with the steel thin strip to 300 ℃, extending the pure aluminum blank from the left opening end of the hollow shaft sleeve 4, sequentially passing through the triangular chuck 5 and the track disc 9 to enter cylindrical holes surrounded by the extrusion blocks 10, stopping extending after one end of the pure aluminum blank reaches the limiting disc 8, clamping and fixing one end of the pure aluminum blank through the triangular chuck 5, then simultaneously starting the first motor 2 and the second motor 7, driving the shell 6 to rotate through a gear on an output shaft of the first motor 2, wherein the rotating direction of the shell 6 is the same as the winding direction of the steel thin strip wound on the outer side wall of the pure aluminum blank; the rotation of the shell 6 drives the second motor 7, the track disc 9, the extrusion blocks 10 and the limiting disc 8 to integrally rotate, so that the extrusion blocks 10 rub the steel thin belt wrapped outside the pure aluminum blank in the extrusion blocks; meanwhile, the second motor 7 drives the track disc 9 to rotate through a gear on an output shaft of the second motor, the rotation of the track disc 9 forces the track bolts 14 at one end of each extrusion block 10 to move from the periphery to the middle along the track holes 12 on the track disc 9, and further the limit bolts 13 at the other end of each extrusion block 10 move from the periphery to the middle along the limit holes 11 on the limit disc 8, so that each extrusion block 10 moves from the periphery to the middle to extrude a middle pure aluminum blank and a steel thin strip wrapped by the outer wall of the middle pure aluminum blank; due to the rotation and contraction of the extrusion blocks 10, the steel thin strip on the outer wall of the pure aluminum blank can be gradually tightened under the action of the tangential friction force and the radial extrusion force of the extrusion blocks 10, the steel thin strip is gradually increased in the pure aluminum blank, the wrapping force is gradually increased along with the continuous action of the tangential force and the radial force, when the wrapping force exceeds the compressive strength of the pure aluminum blank, the pure aluminum blank starts to be plastically deformed, the plastically-deformed pure aluminum blank passes through the hole of the limiting disc 8 and then is guided into the die 3 to be formed, and then the product is formed after cooling and taken out.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (6)
1. A metal forming device is characterized by comprising a base (1), wherein a first motor (2), a mold (3) and a hollow shaft sleeve (4) are fixed on the base (1), a triangular chuck (5) is fixedly arranged on the inner wall of the hollow shaft sleeve (4), one end of a shell (6) is sleeved on the outer side wall of the hollow shaft sleeve (4), the other end of the shell is sleeved on the outer side wall of the mold (3), and the outer wall of the shell (6) is in gear engagement with an output shaft of the first motor (2);
a second motor (7) and a limiting disc (8) are fixed in the shell (6), the limiting disc (8) is fixed on one side of the die (3), and a track disc (9) is meshed with an output shaft gear of the second motor (7);
the plurality of extrusion blocks (10) are arranged in the circumference, and two adjacent extrusion blocks (10) are in sliding contact with each other; one end of each extrusion block (10) is respectively limited in each limiting hole (11) circumferentially distributed on the limiting disc (8), and the other end of each extrusion block is respectively limited in each track hole (12) circumferentially distributed on the track disc (9);
the hollow shaft sleeve (4), the track disc (9) and the limiting disc (8) are sequentially and coaxially arranged.
2. A metal forming apparatus according to claim 1, wherein one end of each extrusion block (10) is retained in each retaining hole (11) by a retaining pin (13), and the other end is retained in each track hole (12) by a track pin (14).
3. Metal forming apparatus according to claim 1, characterized in that the housing (6) is rotatably connected at one end to the outer side wall of the hollow sleeve (4) by means of a first bearing (15) and at the other end to the outer side wall of the mould (3) by means of a second bearing (16).
4. A metal forming apparatus according to claim 1, wherein each of the limiting holes (11) is radially circumferentially distributed on the limiting disc (8); the track holes (12) are distributed on the track disc (9) in a throwing-shaped circumference distribution.
5. Metal forming apparatus according to claim 4, wherein each of the limiting holes (11) and each of the trace holes (12) are kidney-shaped holes.
6. Metal forming apparatus according to one of the claims 1 to 5, wherein each of the press blocks (10) is triangular prism shaped, and the opposing faces of two adjacent press blocks (10) are in contact with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020163046.6U CN211660865U (en) | 2020-02-12 | 2020-02-12 | Metal forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020163046.6U CN211660865U (en) | 2020-02-12 | 2020-02-12 | Metal forming device |
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| Publication Number | Publication Date |
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| CN211660865U true CN211660865U (en) | 2020-10-13 |
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| CN202020163046.6U Active CN211660865U (en) | 2020-02-12 | 2020-02-12 | Metal forming device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111112451A (en) * | 2020-02-12 | 2020-05-08 | 宿迁学院 | Method and apparatus for forming metal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111112451A (en) * | 2020-02-12 | 2020-05-08 | 宿迁学院 | Method and apparatus for forming metal |
| CN111112451B (en) * | 2020-02-12 | 2024-08-02 | 宿迁学院 | Method and apparatus for forming metal |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220523 Address after: 223800 No. 89, Songshan Road, high tech Industrial Development Zone, Suqian City, Jiangsu Province Patentee after: Jiangsu applied Element Technology Co.,Ltd. Address before: 223800 South Huanghe Road, Suqian City, Jiangsu Province, 399 Patentee before: SUQIAN College |
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| TR01 | Transfer of patent right |