CN117983759A - Forging method for long cylinder barrel with liquid injection side block - Google Patents
Forging method for long cylinder barrel with liquid injection side block Download PDFInfo
- Publication number
- CN117983759A CN117983759A CN202410194666.9A CN202410194666A CN117983759A CN 117983759 A CN117983759 A CN 117983759A CN 202410194666 A CN202410194666 A CN 202410194666A CN 117983759 A CN117983759 A CN 117983759A
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- die
- cylinder barrel
- liquid injection
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- 239000007788 liquid Substances 0.000 title claims abstract description 30
- 238000002347 injection Methods 0.000 title claims abstract description 27
- 239000007924 injection Substances 0.000 title claims abstract description 27
- 238000005242 forging Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004140 cleaning Methods 0.000 claims description 6
- 239000002826 coolant Substances 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000004080 punching Methods 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/08—Accessories for handling work or tools
- B21J13/085—Accessories for handling work or tools handling of tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J9/00—Forging presses
- B21J9/02—Special design or construction
- B21J9/06—Swaging presses; Upsetting presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K29/00—Arrangements for heating or cooling during processing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention relates to a long cylinder barrel forging method with a liquid injection side block, when a first punch extrudes a blank, the blank grows upwards and sideways, the blank grows sideways, namely enters a side cavity of a formed liquid injection side block, but the blank can grow upwards, so that the side cavity is not fully filled with the blank growing sideways, and after the blank grows upwards under the limit of a first base, the blank continues to grow sideways, so that the side cavity is filled, thereby realizing the first deepening of a blind hole, simultaneously enabling the blank to grow sideways, and forming the length and the width of the liquid injection side block; the blind hole is deepened and the blank is grown upwards by the arrangement of the second punch, so that the cylinder barrel is formed; therefore, the cylinder barrel and the liquid injection side block are integrally formed, the integral strength of the long cylinder barrel is enhanced, and the blind hole of the cylinder barrel is formed by sequentially extruding the two punches, so that the condition that the demolding is influenced due to overhigh temperature caused by continuously extruding blanks by one punch is avoided.
Description
Technical Field
The invention relates to the field of machinery, in particular to the technical field of mechanical parts, and particularly relates to a long cylinder barrel forging method with a liquid injection side block.
Background
The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). The device has simple structure and reliable operation. When it is used to realize reciprocating motion, it can eliminate speed reducer, has no transmission gap and stable motion, and is thus widely used in hydraulic systems of various machines.
At present, the cylinder length that needs production according to the demand is longer, and still is equipped with along the notes liquid side piece of cylinder axial extension on the periphery of cylinder, and at present cylinder is at first shaping a cylinder tube in the manufacturing process, then welds bottom and notes liquid side piece on the cylinder tube, and this kind of cylinder intensity that forms is low, receives very big influence in the use.
The Chinese patent application No. 202211108402.4 discloses a forging die and a forging method for a large blind hole forging, but the method cannot forge a long cylinder barrel with a liquid injection side block, and in the forging process, a punch is directly left in a blind hole of a blank, the residual of the punch can prevent the later processing, meanwhile, the temperature of the punch cannot reach the temperature of the blank, the punch can locally cool the blank, and the final forming of the cylinder barrel can be influenced to a certain extent.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a long cylinder barrel forging method with a liquid injection side block, which is convenient for integrally forming a cylinder barrel and the liquid injection side block and enhances the integral strength of the long cylinder barrel.
The invention is realized by the following technical scheme, and the long cylinder barrel forging method with the liquid injection side block comprises the following steps:
preheating the lower die and the blank, and cleaning oxide scales on the surface of the blank;
b. Placing the blank into a die cavity of a lower die, enabling a first punch and the die cavity to be coaxially arranged, driving the first punch to extrude the blank downwards, driving the blank to grow upwards and sideways while forming a blind hole on the blank by the first punch, and continuing to grow sideways after the blank grows upwards and is propped against the first support as the section of a first support fixedly connected with the first punch is matched with the section of the die cavity until the blank fills the die cavity below the first support;
c. taking the first punch out of the die cavity, coaxially arranging the second punch and the die cavity, then driving the second punch to be inserted into the blind hole to extrude the blank downwards, and forming an annular channel for the blank to grow upwards between the die cavity and the first punch, so that the blank grows upwards under the extrusion of the second punch, deepens the blind hole, and simultaneously increases the length of the blank, thereby forming the cylinder barrel;
d. Separating two side dies spliced into a lower die and radially arranged along the cylinder barrel, taking the cylinder barrel out from between the two side dies, and flushing and cooling the part of the two side dies forming the die cavity by using a coolant so as to remove oxide scales remained in the die cavity;
e. After the cylinder barrel is cooled, redundant parts at the top of the cylinder barrel are cut off, so that the length of the cylinder barrel and the depth of the blind hole meet the requirements of products.
According to the invention, through the arrangement of the first support, when the first punch extrudes the blank, a closed space is formed, when the first punch extrudes the blank, the blank grows upwards and laterally, namely, the blank enters a side cavity of a formed liquid injection side block, but the blank can grow upwards, so that the laterally grown blank cannot completely fill the side cavity, and therefore, when the blank grows upwards and is limited by the first base, the blank continues to grow to the side surface, so that the side cavity is filled, the first extrusion of the blank is realized, the first deepening of a blind hole is realized, the blank grows to the side surface, and the length and the width of the liquid injection side block are formed; the blind hole is deepened and the blank is grown upwards by the arrangement of the second punch, so that the cylinder barrel is formed; therefore, the cylinder barrel and the liquid injection side block are integrally formed, the integral strength of the long cylinder barrel is enhanced, and the blind hole of the cylinder barrel is formed by sequentially extruding the two punches, so that the condition that the demolding is influenced due to overhigh temperature caused by continuously extruding blanks by one punch is avoided.
Preferably, the lower die further comprises a base which is positioned between the two side dies and is at the bottom of the cavity of the die cavity, and a limiting device which limits the opening of the two side dies, wherein the limiting device comprises limiting side plates and limiting inserts which are positioned on two sides of the side dies, limiting blocks which are respectively inserted into the two side dies are fixedly connected to the limiting blocks, the limiting inserts comprise first inserts which are embedded into the side dies and extend along the height direction, and the two first inserts which are oppositely arranged on the two side dies are connected through a second insert.
When the two side dies are in butt joint, the limiting blocks are respectively inserted into the two side dies, and the first embedded block and the second embedded block are embedded into the two side dies, so that the two side dies are limited to be separated outwards, and the butt joint strength of the two side dies is ensured.
Preferably, the first punch and the second punch are transversely arranged and are arranged on the top plate, four guide posts which extend downwards and are arranged in a rectangular mode are further arranged on the top plate, guide cylinders matched with the guide posts are fixedly connected on the side dies, the four guide posts enclose a first rectangle, the second punch is located on the central line of the first rectangle, the die cavity is located on the central line of a second rectangle enclosed by the four guide cylinders, and the first punch and the second punch are symmetrically arranged on the first side edge of the first rectangle.
When the die cavity is opposite to the first punch, the first guide column and the fourth guide column are respectively inserted into the second guide column and the third guide column, when the second punch is needed to extrude, the top plate moves transversely, and as the first punch and the second punch are symmetrically arranged relative to the first side, the first guide column, the second guide column and the third guide column are correspondingly inserted into the first guide column, the second guide column, the third guide column and the fourth guide column, namely, the second punch is arranged in the second guide column, the second punch and the fourth guide column, namely, the second punch is arranged opposite to the die cavity, and the second blind hole is guaranteed to be aligned with the second punch.
Preferably, the second punch is in a truncated cone shape with a top end diameter larger than a bottom end diameter.
The second punch is arranged in a truncated cone shape, and the second punch is conveniently pulled out of the blind hole.
Preferably, the side mold comprises a first mold body, a second mold body inserted into the inner side surface of the first mold body, the inner side surfaces of the first mold body and the second mold body are flush, the inner side surface of the second mold body is provided with mold grooves, and the two mold grooves and the base form the mold cavity.
According to the preferred scheme, through the arrangement of the second die body, the second die body is convenient to replace according to the cylinder barrels with different inner diameters or shapes, so that the cylinder barrels with different inner diameters or shapes can be conveniently forged and formed.
Preferably, the first die body is embedded with a third insert extending along the radial direction of the second die body, and the other end of the third insert is embedded into the second die body.
The arrangement of the third embedded block is convenient for positioning the first die body and the second die body.
Preferably, the first punch and the second punch are pressurized at a pressure of 5MPA, and the speed of punching by the first punch and the second punch is 120-200mm/s.
Preferably, the mass of the blank is 1.03-1.05 times of the mass of the cylinder barrel.
According to the preferred scheme, extrusion unevenness possibly occurs when the punch is used for punching, the grown part of the blank is inclined, and the top surface of the blank is bent, so that after the cylinder barrel is molded, the part is cut off, and the overall uniformity of the cylinder barrel is ensured.
The beneficial effects of the invention are as follows: through the arrangement of the first support, when the first punch extrudes the blank, a closed space is formed, when the first punch extrudes the blank, the blank can grow upwards and laterally, and the blank grows laterally, namely enters a side cavity of a formed liquid injection side block, but the blank can grow upwards, so that the laterally grown blank cannot completely fill the side cavity, and therefore, when the blank grows upwards and is limited by the first base, the blank continues to grow laterally, so that the side cavity is filled, the first extrusion of the blank is realized, the first deepening of a blind hole is realized, the blank grows laterally, and the length and the width of the liquid injection side block are formed; the blind hole is deepened and the blank is grown upwards by the arrangement of the second punch, so that the cylinder barrel is formed; therefore, the cylinder barrel and the liquid injection side block are integrally formed, the integral strength of the long cylinder barrel is enhanced, and the blind hole of the cylinder barrel is formed by sequentially extruding the two punches, so that the condition that the demolding is influenced due to overhigh temperature caused by continuously extruding blanks by one punch is avoided.
Drawings
FIG. 1 is a schematic perspective view of a mold according to the present invention;
fig. 2 is a schematic perspective view of a lower die;
FIG. 3 is a three view of the lower die;
FIG. 4 is a schematic cross-sectional view at A-A of FIG. 3;
FIG. 5 is a schematic perspective view of the upper die; ;
FIG. 6 is a three view of a cleaning apparatus;
FIG. 7 is a schematic side view of a toothed roller shaft;
FIG. 8 is a schematic perspective view of a cylinder;
FIG. 9 is a schematic view of the first punch being tipped onto a blank;
FIG. 10 is a schematic view of a blank filling a cavity below the first support;
FIG. 11 is a schematic view of a second punch extruding a billet;
The figure shows:
1. Bottom plate, 2, side mould, 3, guide cylinder, 4, die cavity, 5, side cavity, 6, base, 7, second die body, 8, first die body, 9, ejector pin, 10, spacing curb plate, 11, first slug, 12, second slug, 13, third slug, 14, tooth roller, 15, annotate liquid side piece, 20, roof, 21, first drift, 22, second drift, 23, first support, 24, guide post.
Detailed Description
In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.
Referring to fig. 1-11, the forging die of the long cylinder barrel forging method with the liquid injection side block comprises an upper die and a lower die, wherein the lower die comprises a bottom plate 1, the bottom plate 1 is connected with a base 6 through bolts, two side dies 2 which are transversely arranged and transversely slide on the bottom plate 1 are arranged on two sides of the base 6, sliding rails for sliding connection of the two side dies 2 are arranged on the bottom plate 1, the two sliding rails are arranged in a collinear manner, and the center of the base 6 is positioned on a connecting line of the two sliding rails.
The side die 2 comprises a first die body 8, a second die body 7 which is inserted into the inner side surface of the first die body 8, the inner side surfaces of the first die body 8 and the second die body 7 are flush, the inner side surface of the second die body 7 is provided with die grooves, the two die grooves and the base 6 form a die cavity 4, the die cavity 4 is matched with the cylinder barrel in structure, the height of the die cavity 4 is smaller than the length of the cylinder barrel, and a push rod 9 which extends upwards to sequentially penetrate through the bottom plate 1 and the base 6 and extends into the die cavity 4 is further arranged below the bottom plate 1.
The die cavity comprises a main cavity for forming the cylinder barrel body and a side cavity 5 for forming the liquid injection side block, wherein the main cavity is communicated with the side cavity.
The first die body 8 is embedded with a third embedded block 13 extending along the radial direction of the second die body 7, and the other end of the third embedded block 13 is embedded into the second die body 7.
Still be equipped with the stop device that restriction two first die bodies 8 moved backward between two first die bodies 8, stop device is including the spacing curb plate 10 and the spacing abaculus that are located first die body 8 both sides, and spacing curb plate 10 and spacing abaculus are arranged along vertical promptly, and the rigid coupling has the stopper of inserting respectively in two side forms 2 on the stopper, spacing abaculus is including embedding side form 2 in and along the first abaculus 11 that the direction of height extends, and two first abaculus 11 that set up relatively on two side forms 2 pass through the second abaculus 12 and connect.
The upper die comprises a top plate 20, a first punch 21 and a second punch 22 which are transversely arranged are connected to the bottom surface of the top plate 20, a first support 23 is fixedly connected to the top surface of the first punch 21, the section of the first support 23 is matched with the section of the die cavity 4, the first support 23 is connected to the top plate 20, and the second punch 22 is in a round table shape with the top end diameter larger than the bottom end diameter.
The bottom surface of the top plate 20 is also connected with guide posts 24 extending downwards, guide posts 24 are fixedly connected with guide cylinders 3 matched with the guide posts 24 on the first die body 8, four guide posts 24 are arranged, four guide posts 24 enclose a first rectangle, the die cavity 4 is positioned at the center of the first rectangle, four guide cylinders 3 are correspondingly arranged, two guide cylinders 3 on the same first die body 8 are longitudinally distributed, four guide cylinders 3 enclose a second rectangle, and the die cavity 4 is positioned at the center of the second rectangle.
The first side of the first rectangle is located between the first punch 21 and the second punch 22, and the first punch 21 and the second punch 22 are symmetrically disposed about the first side.
The four guide posts 24 are respectively a first guide post 24, a second guide post 24, a third guide post 24 and a fourth guide post 24, the corresponding four guide cylinders 3 are respectively a first guide cylinder 3, a second guide cylinder 3, a third guide cylinder 3 and a fourth guide cylinder 3, the first guide post 24 and the fourth guide post 24 are longitudinally arranged, the first guide post 24 and the third guide post 24 are transversely arranged, the first side edge is the side edge formed by the first guide post 24 and the fourth guide post 24, when the first punch 21 is taken out from the die cavity 4, the second punch 22 extrudes, the top plate 20 is transversely moved, and the first punch 21 and the second punch 22 are symmetrically arranged about the first side edge, so that when the first guide post 24 and the fourth guide post 24 are respectively inserted into the second guide cylinder 3 and the third guide cylinder 3, the second punch 22 and the die cavity 4 are axially arranged, and the alignment of the second punch 22 and a blind hole of a blank is ensured.
The invention discloses a long cylinder barrel forging method with a liquid injection side block, which comprises the following steps of:
a. Preheating a lower die and a blank, wherein the preheating temperature of the lower die is 300-350 ℃, the preheating temperature of the blank is 1100-1300 ℃, and cleaning oxide skin on the surface of the blank by using cleaning equipment;
b. Placing the blank into a die cavity 4 of a lower die, coaxially arranging a first punch 21 and the die cavity 4 under the driving of an alignment device, driving the first punch 21 to extrude the blank downwards, and driving the blank to grow upwards and sideways when the first punch 21 forms a blind hole on the blank, wherein the section of a first support 23 fixedly connected with the first punch 21 is matched with the section of the die cavity 4, so that the blank continues to grow sideways after growing upwards to the first support 23 until the blank fills the die cavity 4 below the first support 23;
c. Taking the first punch 21 out of the die cavity 4, coaxially arranging the second punch 22 and the die cavity 4 under the drive of the alignment device, then driving the second punch 22 to insert into the blind hole to extrude the blank downwards, and forming an annular channel for the blank to grow upwards between the die cavity 4 and the first punch 21, so that the blank grows upwards under the extrusion of the second punch 22, deepening the blind hole and simultaneously increasing the length of the blank, thereby forming the cylinder barrel;
d. Separating two side dies 2 spliced into a lower die and radially arranged along a cylinder barrel, taking the cylinder barrel out from between the two side dies 2, and then flushing and cooling the part of the two side dies 2 forming the die cavity 4 by using a coolant so as to remove oxide scales remained in the die cavity 4;
e. After the cylinder barrel is cooled, redundant parts at the top of the cylinder barrel are cut off, so that the length of the cylinder barrel and the depth of the blind hole meet the requirements of products.
Wherein the pressure for pressurizing the first punch 21 and the second punch 22 is 5MPA, the speed of punching the first punch 21 and the second punch 22 is 120-200mm/s, and the mass of the blank is 1.03-1.05 times of the mass of the cylinder barrel.
The product can be because of the heat conduction of itself in the mould to and forge the heat that produces and lead to the mould temperature too high, the mould can appear annealing because of the high temperature, loses hardness, so in order to guarantee mould life-span and result of use consequently need use the coolant to carry out timely cooling can.
The coolant is water-based graphite emulsion which has excellent cooling and lubricating effects, when the coolant is used, the high-concentration graphite emulsion is mixed with a certain proportion of water and then poured into a high-pressure container, and the high-pressure gas is pressurized and sprayed out, so that the scale in the die cavity 4 is removed while the lower die is cooled.
The cleaning equipment comprises a base plate 1, two toothed roller shafts 14 which are connected onto the base plate 1 in a shaft mode, the section of each toothed roller shaft 14 in the radial direction is tooth-shaped, a blank is located between the two toothed roller shafts 14, the two toothed roller shafts 14 support the blank, the two toothed roller shafts 14 are arranged in parallel with the blank, and a motor for driving one toothed roller shaft 14 to rotate is further arranged on the base plate 1.
Of course, the above description is not limited to the above examples, and the technical features of the present invention that are not described may be implemented by or by using the prior art, which is not described herein again; the above examples and drawings are only for illustrating the technical scheme of the present invention and not for limiting the same, and the present invention has been described in detail with reference to the preferred embodiments, and it should be understood by those skilled in the art that changes, modifications, additions or substitutions made by those skilled in the art without departing from the spirit of the present invention and the scope of the appended claims.
Claims (8)
1. The long cylinder barrel forging method with the liquid injection side block is characterized by comprising the following steps of:
a. Preheating the lower die and the blank, and cleaning oxide scales on the surface of the blank;
b. Placing the blank into a die cavity (4) of a lower die, enabling a first punch (21) and the die cavity (4) to be coaxially arranged, driving the first punch (21) to extrude the blank downwards, and driving the blank to grow upwards and sideways when the first punch (21) forms a blind hole on the blank, wherein the section of a first support (23) fixedly connected with the first punch (21) is matched with the section of the die cavity (4), so that after the blank grows upwards and is propped against the first support (23), the blank continues to grow sideways until the blank fills the die cavity (4) below the first support (23);
c. Taking the first punch (21) out of the die cavity (4), coaxially arranging the second punch (22) and the die cavity (4), then driving the second punch (22) to insert into the blind hole to extrude the blank downwards, and forming an annular channel for the blank to grow upwards between the die cavity (4) and the first punch (21), so that the blank grows upwards under the extrusion of the second punch (22), deepening the blind hole and simultaneously increasing the length of the blank, thereby forming a cylinder barrel;
d. Separating two side dies (2) spliced into a lower die and radially arranged along a cylinder barrel, taking the cylinder barrel out from between the two side dies (2), and then flushing and cooling the part of the two side dies (2) forming a die cavity (4) by using a coolant so as to remove oxide scales remained in the die cavity (4);
e. After the cylinder barrel is cooled, redundant parts at the top of the cylinder barrel are cut off, so that the length of the cylinder barrel and the depth of the blind hole meet the requirements of products.
2. The long cylinder forging method with a liquid injection side block according to claim 1, wherein: the lower die further comprises a base (6) which is positioned between the two side dies (2) and is at the bottom of the cavity of the die cavity (4), and a limiting device which limits the die opening of the two side dies (2), wherein the limiting device comprises limiting side plates (10) and limiting inserts which are positioned on two sides of the side dies (2), limiting blocks which are respectively inserted into the two side dies (2) are fixedly connected to the limiting blocks, the limiting inserts comprise first inserts (11) which are embedded into the side dies (2) and extend along the height direction, and the two first inserts (11) which are oppositely arranged on the two side dies (2) are connected through second inserts (12).
3. The long cylinder forging method with a liquid injection side block according to claim 1, wherein: the first punch (21) and the second punch (22) are transversely arranged on the top plate (20), four guide posts (24) which extend downwards and are arranged in a rectangular mode are further arranged on the top plate (20), guide cylinders (3) matched with the guide posts (24) are fixedly connected to the side die (2), the four guide posts (24) encircle to form a first rectangle, the second punch (22) is located on the central line of the first rectangle, the die cavity (4) is located on the central line of a second rectangle encircled by the four guide cylinders (3), and the first punch (21) and the second punch (22) are symmetrically arranged on the first side of the first rectangle.
4. The long cylinder forging method with a liquid injection side block according to claim 1, wherein: the second punch (22) is in a truncated cone shape with the top end diameter larger than the bottom end diameter.
5. The long cylinder forging method with a liquid injection side block according to claim 2, wherein: the side die (2) comprises a first die body (8), a second die body (7) which is inserted into the inner side surface of the first die body (8), the inner side surfaces of the first die body (8) and the second die body (7) are flush, die grooves are formed in the inner side surface of the second die body (7), and the die cavities (4) are formed by the two die grooves and the base (6).
6. The long cylinder forging method with a liquid injection side block according to claim 1, wherein: a third insert (13) extending along the radial direction of the second die body (7) is embedded on the first die body (8), and the other end of the third insert (13) is embedded in the second die body (7).
7. The long cylinder forging method with a liquid injection side block according to claim 1, wherein: the pressure for pressurizing the first punch (21) and the second punch (22) is 5MPA, and the speed of punching the first punch (21) and the second punch (22) is 120-200mm/s.
8. The forging method of a long cylinder according to claim 1, wherein: the mass of the blank is 1.03-1.05 times of the mass of the cylinder barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410194666.9A CN117983759B (en) | 2024-02-22 | 2024-02-22 | Forging method for long cylinder barrel with liquid injection side block |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410194666.9A CN117983759B (en) | 2024-02-22 | 2024-02-22 | Forging method for long cylinder barrel with liquid injection side block |
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| CN117983759A true CN117983759A (en) | 2024-05-07 |
| CN117983759B CN117983759B (en) | 2024-08-23 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0663680A (en) * | 1992-08-21 | 1994-03-08 | Nippon Light Metal Co Ltd | Manufacture of cylindrical body with rib |
| JP2004098161A (en) * | 2000-04-25 | 2004-04-02 | Japan Casting & Forging Corp | Hot press molding method for thick metallic cylinder object or cylindrical vessel, and apparatus for manufacturing vessel with bottom |
| US20050016246A1 (en) * | 2003-07-24 | 2005-01-27 | Kubota Iron Works Co., Ltd. | Hollow stepped shaft and method of forming the same |
| CN104259375A (en) * | 2014-09-29 | 2015-01-07 | 泰州浙华机械精锻有限公司 | Vertical precision forging process of oil drill pipe joint |
| CN206139773U (en) * | 2016-10-28 | 2017-05-03 | 郴州市嘉禾红德机电铸造有限公司 | Deep blind hole cylinder forging child contour forming device |
| JP2019098351A (en) * | 2017-11-29 | 2019-06-24 | パナソニックＩｐマネジメント株式会社 | Forging mold, parts former and forging method |
| CN114406161A (en) * | 2021-12-10 | 2022-04-29 | 钢铁研究总院 | A net shape forging die for shaft forgings |
| CN114406160A (en) * | 2021-12-10 | 2022-04-29 | 钢铁研究总院 | Double blind hole fan shaft integrated bidirectional extrusion near-net forming process |
| CN219025817U (en) * | 2022-12-29 | 2023-05-16 | 山东成通锻造有限公司 | Upsetting pipe die for partial thickening of cylinder barrel |
-
2024
- 2024-02-22 CN CN202410194666.9A patent/CN117983759B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0663680A (en) * | 1992-08-21 | 1994-03-08 | Nippon Light Metal Co Ltd | Manufacture of cylindrical body with rib |
| JP2004098161A (en) * | 2000-04-25 | 2004-04-02 | Japan Casting & Forging Corp | Hot press molding method for thick metallic cylinder object or cylindrical vessel, and apparatus for manufacturing vessel with bottom |
| US20050016246A1 (en) * | 2003-07-24 | 2005-01-27 | Kubota Iron Works Co., Ltd. | Hollow stepped shaft and method of forming the same |
| CN104259375A (en) * | 2014-09-29 | 2015-01-07 | 泰州浙华机械精锻有限公司 | Vertical precision forging process of oil drill pipe joint |
| CN206139773U (en) * | 2016-10-28 | 2017-05-03 | 郴州市嘉禾红德机电铸造有限公司 | Deep blind hole cylinder forging child contour forming device |
| JP2019098351A (en) * | 2017-11-29 | 2019-06-24 | パナソニックＩｐマネジメント株式会社 | Forging mold, parts former and forging method |
| CN114406161A (en) * | 2021-12-10 | 2022-04-29 | 钢铁研究总院 | A net shape forging die for shaft forgings |
| CN114406160A (en) * | 2021-12-10 | 2022-04-29 | 钢铁研究总院 | Double blind hole fan shaft integrated bidirectional extrusion near-net forming process |
| CN219025817U (en) * | 2022-12-29 | 2023-05-16 | 山东成通锻造有限公司 | Upsetting pipe die for partial thickening of cylinder barrel |
Non-Patent Citations (1)
| Title |
|---|
| 徐光辉;王路平;刘恒;郝留成;: "高压开关用液压缸缸体模锻成形工艺研究及模具设计", 热加工工艺, no. 17, 24 September 2013 (2013-09-24) * |
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| CN117983759B (en) | 2024-08-23 |
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