CN217166311U - Upper male die device for friction press to forge spline hub - Google Patents
Upper male die device for friction press to forge spline hub Download PDFInfo
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- CN217166311U CN217166311U CN202121325784.7U CN202121325784U CN217166311U CN 217166311 U CN217166311 U CN 217166311U CN 202121325784 U CN202121325784 U CN 202121325784U CN 217166311 U CN217166311 U CN 217166311U
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- 238000003825 pressing Methods 0.000 claims abstract description 12
- 238000005242 forging Methods 0.000 claims description 64
- 238000007493 shaping process Methods 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 15
- 238000007906 compression Methods 0.000 claims description 15
- 238000009497 press forging Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000002788 crimping Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The upper male die device for the friction press to forge the spline hub comprises an upper die frame and a male die assembly, wherein the upper die frame is fixedly arranged at the bottom of a lifting slide block of the friction press; the upper die frame comprises an upper die plate horizontally arranged, an upper connecting hole is formed in the upper die plate, an upper fastening bolt in threaded connection with the lifting slider penetrates through the upper connecting hole, the upper die plate is fastened and connected to the bottom of the lifting slider through the upper fastening bolt, the bottom surface of the upper die plate is detachably connected with the upper end of the male die assembly through a detachable positioning connecting structure, the male die assembly comprises a male die and a forming pressing die sleeved outside the male die, and an elastic demolding assembly is arranged between the detachable positioning connecting structure and the forming pressing die. The utility model discloses well upper die carrier and terrace die component's simple structure, the drawing of patterns of being convenient for, the processing degree of difficulty is little, and the die carrier size is less relatively on going up simultaneously, low in production cost. Parts such as the male die, the forming disc, the forming ring and the like are all complete revolution bodies, the processing difficulty is small, the precision of the integral die is easy to guarantee, and the production cost is favorably reduced.
Description
Technical Field
The utility model belongs to the technical field of the automotive industry, concretely relates to friction press forges spline hub and uses last terrace die device.
Background
The splined hub forging is of a hollow tubular construction and, as shown in fig. 1, includes a head portion 43, a conical connecting portion 44 and a long stem portion 45. At present, a flat forging machine is generally adopted to forge and produce a spline hub forging, the flat forging machine is also called a horizontal forging machine, a tubular blank is horizontally placed, the center lines of a male die device and a female die device are arranged along the horizontal direction, and the flat forging machine has the following problems in the process of forging the spline hub: the terrace die device (including terrace die carrier and terrace die subassembly) of horizontal forging machine's structure is more complicated, and the processing cost is high, and the axiality and the fit clearance between installation adjustment terrace die and the die are higher to workman's operation requirement, and the adjustment operation is loaded down with trivial details, and in addition, the terrace die drives spline hub forging easily when the drawing of patterns, influences drawing of patterns effect.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the weak point among the prior art, provide a friction press forging spline last terrace die device for hub of simple structure, convenient adjustment axiality, the drawing of patterns of being convenient for, low in production cost.
In order to solve the technical problem, the utility model adopts the following technical scheme: the upper male die device for the friction press to forge the spline hub comprises an upper die frame and a male die assembly, wherein the upper die frame is fixedly arranged at the bottom of a lifting slide block of the friction press; the upper die frame comprises an upper die plate horizontally arranged, an upper connecting hole is formed in the upper die plate, an upper fastening bolt in threaded connection with the lifting slider penetrates through the upper connecting hole, the upper die plate is fastened and connected to the bottom of the lifting slider through the upper fastening bolt, the bottom surface of the upper die plate is detachably connected with the upper end of the male die assembly through a detachable positioning connecting structure, the male die assembly comprises a male die and a forming pressing die sleeved outside the male die, and an elastic demolding assembly is arranged between the detachable positioning connecting structure and the forming pressing die.
The male die sequentially comprises a limiting portion, a forming portion, a conical section and a guide portion from top to bottom, wherein the limiting portion, the forming portion and the guide portion are cylindrical, the outer diameter of the limiting portion is larger than that of the forming portion, the outer diameter of the forming portion is larger than that of the guide portion, the outer diameter of the upper end of the conical section is equal to that of the forming portion, the outer diameter of the lower end of the conical section is equal to that of the guide portion, and a positioning convex ring is integrally arranged on the outer circle of the upper end of the limiting portion.
The detachable positioning connection structure comprises an integrated mounting ring arranged on the bottom surface of an upper die plate, a positioning sleeve is arranged inside the mounting ring, the excircle diameter of the positioning sleeve is equal to the excircle diameter of the mounting ring, the positioning sleeve is fixedly connected with the upper die plate through a positioning bolt, a compression ring is integrally arranged at the inner circle lower end of the positioning sleeve, a positioning convex ring of a male die is assembled inside the positioning sleeve, the upper end surface of the male die is in compression joint with the upper die plate through an upper backing plate, the lower side ring surface of the positioning convex ring is in compression joint with the upper side ring surface of the compression ring, and the compression ring is sleeved on the excircle of the limiting part of the male die.
The shaping moulding-die includes the shaping dish and the shaping ring of an organic whole structure, and shaping ring upper end and shaping dish lower surface fixed connection, the shaping portion external diameter of shaping ring internal diameter, shaping dish internal diameter and terrace die equals.
The elastic demoulding component comprises a countersunk head bolt and a disc spring combination, an upper through countersunk head hole and a lower through countersunk head hole are formed in the forming disc, a threaded hole which is open at the bottom and corresponds to the countersunk head hole is formed in the positioning sleeve, the countersunk head bolt penetrates through the countersunk head hole from bottom to top and then is in threaded connection with the threaded hole in the positioning sleeve, the disc spring combination sleeve is arranged on the countersunk head bolt, the upper end and the lower end of the disc spring combination are respectively in compression joint with the positioning sleeve and the forming disc, and the head part and the rod part of the countersunk head bolt have movable gaps with the countersunk head hole.
By adopting the technical scheme, the lower die carrier is arranged on the fixed workbench of the friction press, and the lower die carrier is provided with the female die component which corresponds to the male die component up and down and has a superposed central line. When the spline hub forging operation is carried out, the heated tubular blank is vertically placed inside the female die assembly; starting a friction press, driving an upper die frame and a male die to move downwards by a lifting slide block on the friction press, firstly extending a guide part of the male die into an upper port of a tubular blank, then enabling a conical section of the male die to enter the upper port of the tubular blank and expanding the upper port of the tubular blank outwards, then enabling a forming part to enter the tubular blank, then downwards forging and pressing the upper end of the tubular blank by the lower end of a forming ring, supporting the lower end of the tubular blank on a cushion block, compressing the tubular blank along the axial direction under the pressure action of the forming ring, increasing the wall thickness of the tubular blank in the radial direction, namely filling the tubular blank in an annular space between the guide part, a limiting part and the inner circle of a die cavity of a female die assembly, and forging a spline hub forging piece until the forming ring enters the upper port of the tubular blank and a forming disc is contacted with the upper end of the female die assembly, so as to finish the forging operation;
when the lifting slide block drives the upper die frame and the male die to move upwards to an initial position, the lower end of the disc spring is pressed against the forming disc, the lower end of the forming ring is pressed against the upper end of the spline hub forging, the forming disc is separated from the head of the countersunk head bolt at the moment, the forming disc, the forming ring and the spline hub forging are kept still when the guide part and the forming part of the male die move upwards, the forming part of the male die moves upwards along the inner circles of the forming disc and the forming ring, and after the disc spring returns to the initial length, the forming disc and the forming ring move upwards along with the male die after the forming disc and the upper end ring surface of the head of the countersunk head bolt are pressed and connected; and the lifting slide block drives the upper die frame and the male die assembly to move upwards to the initial position, and the friction press is closed.
The spline hub forging is a slender hollow forging, the blank is completely formed in the die cavity of the female die assembly during forging, meanwhile, the male die also needs to enter the tubular blank for a long length, so that the outer wall of the spline hub and the inner wall of the die cavity of the female die assembly as well as the inner wall of the spline hub and the outer wall of the male die have a large contact area when the forging is completed, and the contact length in the die stripping direction is long. Therefore, after the forging is finished, great friction force exists between the inner wall of the spline hub forging and the excircle of the punch, and between the outer wall of the spline hub forging and the inner wall of the die cavity of the die assembly, and the spline hub forging is possibly left in the die assembly or on the punch, so that the forging and the die are scrapped. Therefore, when the friction press is used for producing the spline hub forging, in order to ensure that the size of the forging of the spline hub meets the requirements and the smooth demolding is realized, the spline hub forging, the corresponding mold and the mold frame are designed, the spline hub forging is provided with a 50mm inclination-free part at one section of the lower part of the excircle of the long rod part, one section of the upper part of the long rod part and the head are provided with 0.5-degree drawing inclination, and the head is provided with 1.5-degree drawing inclination.
The external cover of terrace die of spline hub is equipped with axially slidable's shaping moulding-die relatively, and the integrative location bulge loop that sets up of upper end excircle of the spacing portion of terrace die and the location crimping of clamp ring to through positioning bolt fastening connection position sleeve and cope match-plate pattern, make the location of terrace die connect convenient dismouting and strong reliability.
When a lifting slide block of the friction press drives an upper die frame, a male die and a forming pressing die to forge downwards, the lower end of the limiting part drives a forming disc, the forming disc drives a forming ring to forge and press a tubular blank downwards, the head end face of the spline hub forging is formed, the relative movement distance between the male die and the forming ring is limited, and the disc spring combination between the male die and the forming ring is prevented from being extruded and deformed to lose efficacy.
And a forming disc sleeved outside the male die is fixed on the positioning sleeve through a countersunk head bolt and a disc spring combination, and the forming disc and the forming ring have a movement distance of 5-6mm in the vertical direction relative to the male die. The disc spring combination can provide large elastic force under the condition of small compression amount, the disc spring combination is compressed between the positioning sleeve and the forming disc during forging, downward thrust can be provided for the forming ring in the process that the male die is separated from the spline hub forging after forging, the spline hub forging is kept static, the male die moves upwards to be separated from the spline hub forging, and the purpose of smooth demolding is achieved.
To sum up, the utility model discloses the structural design of well upper die carrier and terrace die subassembly is more reasonable, simple structure, and the drawing of patterns of being convenient for, the processing degree of difficulty is little, and the die carrier size is less relatively on the while, low in production cost. Parts such as the male die, the forming disc, the forming ring and the like are all complete revolution bodies, the processing difficulty is small, the precision of the integral die is easy to guarantee, and the production cost is favorably reduced.
Drawings
FIG. 1 is a schematic structural view of a prior art splined hub forging;
fig. 2 is a schematic structural diagram of the present invention.
Detailed Description
As shown in fig. 2, the upper punch device for forging the spline hub of the friction press of the present invention comprises an upper die frame and a punch assembly, wherein the upper die frame is fixedly installed at the bottom of a lifting slide block of the friction press (not shown); the upper die frame comprises an upper die plate 1 horizontally arranged, an upper connecting hole 2 is formed in the upper die plate 1, an upper fastening bolt in threaded connection with the lifting slider is arranged in the upper connecting hole 2 in a penetrating mode, the upper fastening bolt tightly connects the upper die plate 1 to the bottom of the lifting slider, the bottom surface of the upper die plate 1 is connected with the upper end of a male die assembly in a fastening mode through a detachable positioning connecting structure, the male die assembly comprises a male die and a forming pressing die arranged outside the male die in a sleeved mode, and an elastic demolding assembly is arranged between the detachable positioning connecting structure and the forming pressing die.
The male die sequentially comprises a limiting portion 3, a forming portion 4, a conical section 5 and a guide portion 6 from top to bottom, the limiting portion 3, the forming portion 4 and the guide portion 6 are cylindrical, the outer diameter of the limiting portion 3 is larger than that of the forming portion 4, the outer diameter of the forming portion 4 is larger than that of the guide portion 6, the outer diameter of the upper end of the conical section 5 is equal to that of the forming portion 4, the outer diameter of the lower end of the conical section 5 is equal to that of the guide portion 6, and a positioning convex ring 7 is integrally arranged on the outer circle of the upper end of the limiting portion 3.
Can dismantle location connection structure includes an organic whole and establishes the collar 8 in 1 bottom surface of cope match-plate pattern, the inside position sleeve 9 that is equipped with of collar 8, 9 excircle diameters of position sleeve equal the interior diameter of 8 circles of collar, position sleeve 9 passes through positioning bolt 10 and 1 fastening connection of cope match-plate pattern, the integrative clamp ring 11 that is equipped with of the interior lower extreme of 9 circles of position sleeve, the location bulge loop 7 assembly of terrace die is inside 9 nests, the terrace die up end passes through upper padding plate 12 and 1 crimping of cope match-plate pattern, 7 downside anchor rings of location bulge loop and 11 upside anchor rings crimping of clamp ring, 11 covers on 3 excircles of spacing portion of terrace die at the clamp ring.
The forming die comprises a forming disc 13 and a forming ring 14 which are of an integral structure, the upper end of the forming ring 14 is fixedly connected with the lower surface of the forming disc 13, and the inner diameter of the forming ring 14, the inner diameter of the forming disc 13 and the outer diameter of the forming part 4 of the male die are equal.
The elastic demoulding component comprises a countersunk head bolt 15 and a disc spring combination 16, an upper through countersunk hole 17 and a lower through countersunk hole 17 are formed in the forming disc 13, a threaded hole which is open at the bottom and corresponds to the countersunk hole 17 vertically is formed in the positioning sleeve 9, the countersunk head bolt 15 penetrates through the countersunk hole 17 from bottom to top and then is connected to the threaded hole in the positioning sleeve 9 in a threaded manner, the disc spring combination 16 is sleeved on the countersunk head bolt 15, the upper end and the lower end of the disc spring combination 16 are respectively in compression joint with the positioning sleeve 9 and the forming disc 13, and the head part and the rod part of the countersunk head bolt 15 have movable gaps with the countersunk hole 17.
The lower die frame is arranged on the fixed workbench of the friction press, and the lower die frame is provided with a female die assembly which corresponds to the male die assembly up and down and has a coincident central line. When the spline hub forging operation is carried out, the heated tubular blank is vertically placed inside the female die assembly; starting the friction press, driving the upper die frame and the male die to move downwards by a lifting slide block on the friction press, firstly extending the guide part 6 of the male die into the upper port of the tubular blank, then the conical section 5 of the male die enters the upper port of the tubular blank and expands the upper port of the tubular blank outwards, then the forming part 4 enters the inside of the tubular blank, then the lower end of the forming ring 14 downwardly forges the upper end of the tubular blank, the lower end of the tubular blank is supported on the cushion block, the tubular blank is compressed in the axial direction under the pressure of the forming ring 14, the wall thickness of the tubular blank increases in the radial direction, namely, the tubular blank is filled in an annular space between the guide part 6 and the limiting part 3 of the male die and the inner circle of the die cavity of the female die assembly, and the spline hub forging is forged out until the forming ring 14 enters the upper port of the tubular blank and the forming disc 13 is contacted with the upper end of the female die assembly, so that the forging operation is completed;
when the lifting slide block drives the upper die frame and the male die to move upwards to the initial position, the lower end of the disc spring is pressed against the forming disc 13, the lower end of the forming ring 14 is pressed against the upper end of the spline hub forging, at the moment, the forming disc 13 is separated from the pressing connection with the head of the countersunk head bolt 15, the forming disc 13, the forming ring 14 and the spline hub forging are kept still at the initial time when the guide part 6 and the forming part 4 of the male die move upwards, the forming part 4 of the male die moves upwards along the inner circles of the forming disc 13 and the forming ring 14, and after the disc spring returns to the initial length, the forming disc 13 and the forming ring 14 move upwards along with the male die after the forming disc 13 and the annular surface of the upper end of the head of the countersunk head bolt 15 are pressed and connected; and the lifting slide block drives the upper die frame and the male die assembly to move upwards to the initial position, and the friction press machine is closed.
The spline hub forging is a slender hollow forging, the blank is completely formed in the die cavity of the female die assembly during forging, meanwhile, the male die also needs to enter the tubular blank for a long length, so that the outer wall of the spline hub and the inner wall of the die cavity of the female die assembly as well as the inner wall of the spline hub and the outer wall of the male die have a large contact area when the forging is completed, and the contact length in the die stripping direction is long. Therefore, after the forging is finished, great friction force exists between the inner wall of the spline hub forging and the excircle of the punch, and between the outer wall of the spline hub forging and the inner wall of the die cavity of the die assembly, and the spline hub forging is possibly left in the die assembly or on the punch, so that the forging and the die are scrapped. Therefore, when the friction press is used for producing the spline hub forging, in order to ensure that the size of the forging of the spline hub meets the requirements and the smooth demolding is realized, the spline hub forging, the corresponding mold and the mold frame are designed, the spline hub forging is provided with a 50mm inclination-free part at one section of the lower part of the excircle of the long rod part, one section of the upper part of the long rod part and the head are provided with 0.5-degree drawing inclination, and the head is provided with 1.5-degree drawing inclination.
The outside cover of terrace die of spline hub is equipped with relative endwise slip's shaping moulding-die, and the integrative location bulge loop 7 that sets up of upper end excircle of spacing portion 3 of terrace die and the location crimping of clamp ring 11 to through positioning bolt 10 fastening connection position sleeve 9 and cope match-plate pattern 1, make the location of terrace die connect and make things convenient for dismouting and good reliability.
When a lifting slide block of the friction press drives an upper die frame, a male die and a forming pressing die to forge downwards, the lower end of the limiting part 3 drives a forming disc 13, the forming disc 13 drives a forming ring 14 to forge and press a tubular blank downwards, the head end face of the spline hub forging is formed, the relative movement distance between the male die and the forming ring is limited, and the disc spring combination 16 between the male die and the forming ring is prevented from being extruded and deformed to fail.
The forming disc sleeved outside the male die is fixed on the positioning sleeve 9 through a countersunk head bolt 15 and a disc spring combination 16, and the forming disc 13 and the forming ring 14 have a movement distance of 5-6mm relative to the male die in the vertical direction. The disc spring combination 16 can provide large elastic force under the condition of small compression amount, the disc spring combination 16 is compressed between the positioning sleeve 9 and the forming disc 13 during forging, downward thrust can be provided for the forming ring in the process that the male die is separated from the spline hub forging after forging, the spline hub forging is kept static, the male die moves upwards and is separated from the spline hub forging, and the purpose of smooth demolding is achieved.
Claims (5)
1. Friction press forges spline hub and uses punch assembly, its characterized in that: the device comprises an upper die frame and a male die assembly, wherein the upper die frame is fixedly arranged at the bottom of a lifting slide block of a friction press; the upper die frame comprises an upper die plate horizontally arranged, an upper connecting hole is formed in the upper die plate, an upper fastening bolt in threaded connection with the lifting slider penetrates through the upper connecting hole, the upper die plate is fastened and connected to the bottom of the lifting slider through the upper fastening bolt, the bottom surface of the upper die plate is detachably connected with the upper end of the male die assembly through a detachable positioning connecting structure, the male die assembly comprises a male die and a forming pressing die sleeved outside the male die, and an elastic demolding assembly is arranged between the detachable positioning connecting structure and the forming pressing die.
2. The male die assembly for a friction press for forging a splined hub according to claim 1, wherein: the male die sequentially comprises a limiting portion, a forming portion, a conical section and a guide portion from top to bottom, wherein the limiting portion, the forming portion and the guide portion are cylindrical, the outer diameter of the limiting portion is larger than that of the forming portion, the outer diameter of the forming portion is larger than that of the guide portion, the outer diameter of the upper end of the conical section is equal to that of the forming portion, the outer diameter of the lower end of the conical section is equal to that of the guide portion, and a positioning convex ring is integrally arranged on the outer circle of the upper end of the limiting portion.
3. The punch assembly for a friction press forging spline hub according to claim 2, wherein: the detachable positioning connection structure comprises an integrated mounting ring arranged on the bottom surface of an upper die plate, a positioning sleeve is arranged inside the mounting ring, the excircle diameter of the positioning sleeve is equal to the excircle diameter of the mounting ring, the positioning sleeve is fixedly connected with the upper die plate through a positioning bolt, a compression ring is integrally arranged at the inner circle lower end of the positioning sleeve, a positioning convex ring of a male die is assembled inside the positioning sleeve, the upper end surface of the male die is in compression joint with the upper die plate through an upper backing plate, the lower side ring surface of the positioning convex ring is in compression joint with the upper side ring surface of the compression ring, and the compression ring is sleeved on the excircle of the limiting part of the male die.
4. The male die assembly for a friction press for forging a splined hub according to claim 3, wherein: the shaping moulding-die includes the shaping dish and the shaping ring of an organic whole structure, and shaping ring upper end and shaping dish lower surface fixed connection, the shaping portion external diameter of shaping ring internal diameter, shaping dish internal diameter and terrace die equals.
5. The male die assembly for a friction press for forging a splined hub according to claim 4, wherein: the elastic demoulding component comprises a countersunk head bolt and a disc spring combination, an upper through countersunk head hole and a lower through countersunk head hole are formed in the forming disc, a threaded hole which is open at the bottom and corresponds to the countersunk head hole is formed in the positioning sleeve, the countersunk head bolt penetrates through the countersunk head hole from bottom to top and then is in threaded connection with the threaded hole in the positioning sleeve, the disc spring combination sleeve is arranged on the countersunk head bolt, the upper end and the lower end of the disc spring combination are respectively in compression joint with the positioning sleeve and the forming disc, and the head part and the rod part of the countersunk head bolt have movable gaps with the countersunk head hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121325784.7U CN217166311U (en) | 2021-06-15 | 2021-06-15 | Upper male die device for friction press to forge spline hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121325784.7U CN217166311U (en) | 2021-06-15 | 2021-06-15 | Upper male die device for friction press to forge spline hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217166311U true CN217166311U (en) | 2022-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121325784.7U Active CN217166311U (en) | 2021-06-15 | 2021-06-15 | Upper male die device for friction press to forge spline hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217166311U (en) |
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2021
- 2021-06-15 CN CN202121325784.7U patent/CN217166311U/en active Active
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