CN112845783B - Spin forming method and spin forming device for W-shaped metal sealing ring - Google Patents
Spin forming method and spin forming device for W-shaped metal sealing ring Download PDFInfo
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- CN112845783B CN112845783B CN202110004999.7A CN202110004999A CN112845783B CN 112845783 B CN112845783 B CN 112845783B CN 202110004999 A CN202110004999 A CN 202110004999A CN 112845783 B CN112845783 B CN 112845783B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
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Abstract
The invention discloses a spin forming method of a W-shaped metal sealing ring, which comprises the following steps: s100, calculating the height of an annular blank of the W-shaped metal sealing ring according to the axial section of the W-shaped metal sealing ring, and preparing the annular blank with the height; s200, processing an annular waist groove part by spinning along the radial center of the annular blank prepared in the step S1, wherein the waist groove part is sunken towards the direction of the axis of the annular blank; s300, spinning the parts, located on the two sides of the waist groove, of the annular blank to form the W-shaped metal sealing ring. The invention can obtain the flat, complete and uniform spinning W-shaped metal sealing ring; according to the invention, the support ring is inserted into the waist groove part of the annular blank to increase the strength of the edge of the second mold core, so that the technical problem that the annular blank is difficult to position is effectively solved.
Description
Technical Field
The invention relates to the field of metal ring manufacturing, in particular to a spinning forming method of a W-shaped metal sealing ring, and further relates to a spinning device of the W-shaped metal sealing ring.
Background
The W-shaped metal sealing ring is an axial self-tightening static sealing structure with a new sealing form and a better sealing effect, has the advantages of good resilience, strong vibration absorption capacity, large deformation range, good high vibration following performance, high vibration absorption capacity, long service life, good wear resistance and the like, and is particularly suitable for working in severe environments such as high temperature, high pressure, vibration, strong corrosive media and the like in aviation and aerospace.
The forming and manufacturing of the W-shaped metal sealing ring usually adopts a multi-pass rolling process, and the rolling forming process is a processing mode of continuous incremental forming without cutting scraps. Although the rolling forming has the advantages of convenience in operation, good flexibility, high efficiency, convenience in control, good universality and the like, the defects of non-uniform rolling deformation, wrinkling, cracking, warping, local thinning and the like are easily caused due to the fact that the cross section of the W-shaped metal sealing ring is small in size and the workpiece is difficult to position during multi-pass rolling.
The invention patent with publication number CN110918750A discloses a thin-wall metal sealing ring spin forming device with an omega-shaped section, which is used for spin forming a first half edge and a second half edge respectively, and is difficult to position the sealing ring in the spin forming process.
Disclosure of Invention
Aiming at the defects of the prior art and aiming at solving the defect that the workpiece is difficult to position when the W-shaped metal sealing ring is rolled for multiple times, the invention provides the following technical scheme: a spin forming method of a W-shaped metal sealing ring comprises the following steps:
s100, calculating the height of an annular blank of the W-shaped metal sealing ring according to the axial section of the W-shaped metal sealing ring, and preparing the annular blank with the height;
s200, processing an annular waist groove part by spinning along the radial center of the annular blank prepared in the step S1, wherein the waist groove part is sunken towards the direction of the axis of the annular blank;
s300, spinning parts, located on two sides of the waist groove, of the annular blank to form a W-shaped metal sealing ring;
before the parts, located on two sides of the waist groove part, of the annular blank are spun, the waist groove part is embedded into the cavity of the second mold core, and the support ring is filled into the waist groove part, so that the support ring and the second mold core clamp the annular blank.
Further, the calculating process of the height of the ring-shaped blank in the step S1 includes:
s101, obtaining an axial section profile of the W-shaped metal sealing ring, wherein the obtained axial section profile is symmetrical along the center line of the waist groove part;
s102, offsetting the cross section profile on one side of the central line according to half of the thickness of the W-shaped metal sealing ring to obtain a middle contour line, and obtaining the length of the middle contour line;
s103, connecting two highest points symmetrical along a central line in the axial section outline to obtain an intersection point with the central line, and drawing a straight line with the same length as the middle contour line by taking the intersection point as a starting point;
s104, the straight line drawn in the step S103 is symmetrical along the center line, and the height of the annular blank is obtained.
Further, the method for preparing the ring-shaped blank in the step S100 includes
Rolling the plate material into a circle according to the radius of the W-shaped sealing ring, and welding the end part of the rolled plate material to obtain an annular blank;
or opening the plate in advance, and cutting the allowance after adopting a hole flanging process to obtain the annular blank without the welding line.
Further, the spinning method of the waist groove portion in step S200 includes:
s201, sleeving an annular blank on the outer side of a first mold core, wherein the first mold core comprises a left mold core and a right mold core which are symmetrical along the radial central plane of the annular blank, and a space is reserved between the left mold core and the right mold core;
s202, pressing the annular blank part sleeved on the left mold core through a first pressing plate, and pressing the annular blank part sleeved on the right mold core through a second pressing plate;
s203, rotating the first mold core, and respectively moving the left mold core and the right mold core towards the radial center of the annular blank until the left mold core is contacted with the right mold core;
s204, feeding the first rotary wheel towards the axis of the annular blank along the direction perpendicular to the outer surface of the annular blank while rotating the first mold core, and spinning the annular blank to form a waist groove part.
Further, the reserved space between the left mold core and the right mold core is equal to the length of the waist groove after the waist groove is unfolded.
Further, the method for spinning the portions of the annular blank located at the two sides of the waist groove portion in the step S300 includes:
s301, sleeving a split second mold core on a second rotating shaft, wherein the part of the second rotating shaft sleeved with the second mold core is conical;
s302, embedding the waist groove part into a cavity of a second mold core, and filling a support ring into the waist groove part;
s303, enabling the second rotating shaft to axially slide towards the direction of the conical tip, so as to extrude the second mold core, and enabling the second mold core and the support ring to clamp the annular blank;
s304, driving a second mold core to rotate through a second rotating shaft; and simultaneously, feeding the second spinning wheel along the first side surface of the outer contour of the second mold core towards the axis of the annular blank, spinning a first bent part positioned on one side of the waist groove part, feeding the third spinning wheel along the second side surface of the outer contour of the second mold core towards the axis of the annular blank, spinning a second bent part positioned on the other side of the waist groove part, and forming the W-shaped metal sealing ring, wherein the first bent part and the second bent part are symmetrical along the radial central plane of the annular blank.
The invention also provides a spinning device of the W-shaped metal sealing ring according to the spinning forming method of the W-shaped metal sealing ring.
The invention also claims a spinning device of the W-shaped metal sealing ring, which comprises a waist groove spinning device and two end face spinning devices, wherein the waist groove spinning device is used for processing the waist groove part in the annular blank;
the two end surfaces spinning device comprises
A second rotating shaft including a conical portion having a conical shape;
the second mold core consists of at least two split mold cores, and each split mold core is in transmission connection with the conical part of the second rotating shaft; the split mold core comprises a cavity matched with the shape of the waist groove part, a first side face matched with the shape of a first bent part of the W-shaped metal sealing ring, and a second side face matched with the shape of a second bent part of the W-shaped metal sealing ring;
the second rotating wheel is always in contact with the outer surface of the first bending part in the spinning process and can feed towards the axis of the second rotating shaft;
and the third spinning wheel is always in contact with the outer surface of the second bending part in the spinning process and can feed towards the axis of the second rotating shaft.
Furthermore, both ends face spinning device still includes the backup pad, the backup pad is including cup jointing the backup pad body on the second rotation axis and the spacing portion of arranging along the side circumference of backup pad body, each the split mold core is connected with the backup pad slidable through the guide rail respectively to each mold core is connected with spacing portion through reset spring respectively.
Further, the waist groove spinning device comprises
A first rotating shaft;
the first mold core comprises a left mold core and a right mold core which are respectively in transmission connection with a first rotating shaft, the left mold core and the right mold core can respectively move along the axial direction of the first rotating shaft, and a space is reserved between the left mold core and the right mold core before spinning processing;
the first pressing plate is used for pressing the annular blank on the left mold core;
the second pressing plate presses the annular blank on the right mold core;
the first spinning wheel is perpendicular to the axis of the first rotating shaft and located on a plane where the symmetric centers of the left mold core and the right mold core are located, and the first spinning wheel can feed to the axis of the first rotating shaft in the spinning process.
Further, the distance reserved between the left mold core and the right mold core before spinning is equal to the length of the waist groove after being unfolded.
The technical scheme of the invention has the following advantages:
1. according to the invention, the annular waist groove part is formed by spinning the radial center of the annular blank, and then the parts of the annular blank positioned at two sides of the waist groove part are spun, so that the flat, complete and uniformly spun W-shaped metal sealing ring can be obtained; then, inserting a support ring into the waist groove part of the annular blank to increase the strength of the second mold core edge; according to the invention, the waist groove part is firstly processed, and then the mold core and the support ring are matched to clamp the waist groove part, so that the technical problem that the annular blank is difficult to position is effectively solved.
2. The calculation process of the height of the annular blank is simple and clear, the operation is simple, and a relatively accurate height value of the annular blank can be obtained.
3. The method for preparing the annular blank has more than one method, can obtain the annular blank with seams or no seams, and has full consideration and ingenious design.
4. The second rotating shaft drives the second mold core to rotate; meanwhile, the second rotating wheel feeds towards the axis of the annular blank along the first side surface of the outer contour of the second mold core, and the third rotating wheel feeds towards the axis of the annular blank along the second side surface of the outer contour of the second mold core, so that the W-shaped metal sealing ring can be formed. The two-end-face spinning device is simple to assemble and convenient to disassemble, and the W-shaped metal sealing ring with uniform spinning can be obtained.
5. According to the waist groove spinning device, the annular blank is horizontally fed through the left mold core, the right mold core, the first pressing plate and the second pressing plate, and then the annular blank is fed towards the axis of the annular blank through the first spinning wheel in the direction perpendicular to the outer surface of the annular blank, so that a waist groove part with uniform spinning can be obtained.
6. The split type second mold core is adopted, in the assembly process, part of the split type mold core is assembled firstly, the waist groove part is embedded into the cavity of the split type mold core in cooperation with the guide rail, and then the rest split type mold cores are assembled in cooperation with the guide rail, so that the waist groove part is completely embedded into the cavity of the second mold core, and the positioning of the annular blank with the waist groove part is realized.
Drawings
FIG. 1 is a schematic structural view of two end faces of a W-shaped metal sealing ring in spinning;
FIG. 2 is a schematic view of a waist groove of a W-shaped metal seal ring;
FIG. 3 is a schematic structural view of an axial cross section of a W-shaped metal seal ring;
FIG. 4 is a schematic structural diagram of a plate;
FIG. 5 is a schematic structural view of the rolled sheet;
FIG. 6 is a schematic structural diagram of an open type plate;
FIG. 7 is a schematic structural view of an open type panel veneer after being rolled;
FIG. 8 is a schematic view showing the structure of the ring-shaped blank after the waist groove is spun;
FIG. 9 is a schematic structural view of a ring-shaped blank after spinning of two end faces;
FIG. 10 is a schematic view of the structure of the support ring;
fig. 11 is a schematic structural view of the split second mold core sliding on the guide rail;
description of reference numerals:
the device comprises an annular blank 1, a waist groove part 11, a first bending part 111, a first bending part 112, a second mold core 2, a support ring 3, a plate 4, a first mold core 5, a left mold core 51, a right mold core 52, an axial cross-sectional profile 6 of a W-shaped metal sealing ring, a mold core A21, a mold core B22, a mold core C23, a mold core D24, a first pressing plate 61, a second pressing plate 62, a first spinning wheel 71, a second spinning wheel 72, a third spinning wheel 73, a second rotating shaft 81, a waist groove spinning device 9, a first rotating shaft 91, two end face spinning devices 10, a support plate 101, a support plate body 102, a return spring 103, a limiting part 104, a guide rail 105, a step plate 106, a guide rail E1051 and a guide rail F1052.
Detailed Description
Example 1
As shown in fig. 1, 2, 8, 9 and 10, the invention provides a spin forming method of a W-shaped metal sealing ring, which comprises the following steps:
s100, calculating the height of an annular blank 1 of the W-shaped metal sealing ring according to the axial section of the W-shaped metal sealing ring, and preparing the annular blank 1 with the height;
s200, processing an annular waist groove part 11 by spinning along the radial center of the annular blank 1 prepared in the step S100, wherein the waist groove part 11 is sunken towards the direction of the axis of the annular blank 1;
s300, spinning parts, located on two sides of the waist groove part 11, in the annular blank 1 to form a W-shaped metal sealing ring;
before spinning the parts of the annular blank 1 positioned at two sides of the waist groove part 11, the waist groove part 11 is embedded into the cavity of the second mold core 2, and the support ring 3 is filled in the waist groove part 11, so that the support ring 3 and the second mold core 2 clamp the annular blank 1.
In the invention, the spin forming method of the W-shaped metal sealing ring comprises the following steps:
firstly, calculating the height of an annular blank 1; calculating the height of an annular blank 1 of the W-shaped metal sealing ring according to the axial section of the W-shaped metal sealing ring, so as to prepare the annular blank 1 with the height value;
secondly, spinning the annular blank 1 to form a waist groove part 11; carrying out spinning processing along the radial center of the prepared annular blank 1 to obtain an annular waist groove part 11, wherein the obtained waist groove part 11 is sunken towards the direction of the axis of the annular blank 1;
thirdly, spinning the parts of the annular blank 1 positioned at two sides of the waist groove part 11 to form a W-shaped metal sealing ring.
The method is characterized in that the waist groove part 11 is embedded into a cavity of the second mold core 2, and the support ring 3 is filled in the waist groove part 11, so that the support ring 3 and the second mold core 2 clamp the annular blank 1; then, spinning is performed along portions of the annular blank 1 located on both sides of the waist groove portion 11, thereby obtaining a W-shaped metal seal ring.
The invention mainly processes the annular waist groove part 11 by spinning the radial center of the annular blank 1, and then processes the parts of the annular blank 1 positioned at two sides of the waist groove part 11 by spinning, thus obtaining the flat, complete and uniform-spinning W-shaped metal sealing ring; according to the invention, the support ring 3 is inserted into the waist groove part 11 of the annular blank 1 to increase the strength of the edge of the second mold core 2, so that the technical problem that the annular blank 1 is difficult to position is effectively solved.
As shown in fig. 3, in the present embodiment, the calculation process of the height of the annular blank 1 in step S100 includes:
s101, obtaining an axial section profile 6 of the W-shaped metal sealing ring, wherein the obtained axial section profile is symmetrical along the center line of the waist groove part 11;
s102, offsetting the cross section profile on one side of the central line according to half of the thickness of the W-shaped metal sealing ring to obtain a middle contour line, and obtaining the length of the middle contour line;
s103, connecting two highest points symmetrical along a central line in the axial section outline to obtain an intersection point with the central line, and drawing a straight line with the same length as the middle contour line by taking the intersection point as a starting point;
and S104, the straight line drawn in the step S103 is symmetrical along the central line to obtain the height of the annular blank 1.
The calculation process of the height of the annular blank 1 is simple and clear, the operation is simple, and the accurate height value of the annular blank 1 can be obtained.
As shown in fig. 4, 5, 6, and 7, in the present embodiment, the method for preparing the ring-shaped blank 1 in step S100 includes:
rolling the plate 4 according to the radius of the W-shaped sealing ring, and welding the end part of the rolled plate 4 to obtain an annular blank 1;
or opening the plate 4 in advance, and then cutting the allowance after adopting a hole flanging process to obtain the annular blank 1 without the welding line.
In the embodiment, two methods are used for preparing the annular blank 1, one method is to roll the plate 4 and weld the end part of the rolled plate 4; and the other method is to pre-open the plate 4, then cut the allowance after adopting the hole flanging process, and obtain the annular blank 1 without the welding seam.
In this embodiment, there is more than one method for manufacturing the ring-shaped blank 1 according to the present invention, and the ring-shaped blank 1 having a seam or no seam can be obtained.
As shown in fig. 2 and 8, in the present embodiment, the spinning method of the waist groove portion 11 in step S200 includes:
s201, sleeving the annular blank 1 on the outer side of a first mold core 5, wherein the first mold core 5 comprises a left mold core 51 and a right mold core 52 which are symmetrical along the radial central plane of the annular blank 1, and a space is reserved between the left mold core 51 and the right mold core 52;
s202, pressing the part of the annular blank 1 sleeved on the left mold core 51 through the first pressing plate 61, and pressing the part of the annular blank 1 sleeved on the right mold core 52 through the second pressing plate 62;
s203, rotating the first mold core 5, and respectively moving the left mold core 51 and the right mold core 52 towards the radial center of the annular blank 1 until the left mold core 51 is contacted with the right mold core 52;
and S204, feeding the first rotary wheel 71 towards the axis of the annular blank 1 along the direction vertical to the outer surface of the annular blank 1 while rotating the first mold core 5, and spinning the annular blank 1 to form the waist groove part 11.
In the embodiment, the method of forming the waist groove 11 by spinning the annular blank 1 is as follows:
adjusting the distance between the left mold core 51 and the right mold core 52, wherein the length of the distance is equal to the length of the unfolded waist groove part 11, sleeving the annular blank 1 on the top parts of the left mold core 51 and the right mold core 52, then pressing the part of the annular blank 1 sleeved on the left mold core 51 through the first pressing plate 61, pressing the part of the annular blank 1 sleeved on the right mold core 52 through the second pressing plate 62, and pressing the annular blank 1 on the top parts of the left mold core 51 and the right mold core 52; when the first mold core 5 rotates, the first rotating wheel 71 is fed towards the axis of the annular blank 1 along the direction vertical to the outer surface of the annular blank 1, the annular blank 1 is spun, meanwhile, the first pressing plate 61 and the second pressing plate 62 are both inverted L-shaped, and the left mold core 51 and the right mold core 52 are respectively moved towards the radial center of the annular blank 1 through the first pressing plate 61 and the second pressing plate 62 until the left mold core 51 is contacted with the right mold core 52; the annular blank 1 is spun to form a waist groove 11.
According to the waist groove spinning device 9, the annular blank 1 is horizontally fed through the left mold core 51 and the right mold core 52, the first pressing plate 61 and the second pressing plate 62, and then the first spinning wheel 71 feeds towards the axis of the annular blank 1 along the direction vertical to the outer surface of the annular blank 11, so that the waist groove 11 of the annular blank 1 can be spun, the waist groove spinning device 9 is simple in assembly and convenient to disassemble, and the waist groove 11 which is uniformly spun can be obtained.
As shown in fig. 1, 9 and 11, in the present embodiment, the method of spinning the portions of the ring-shaped blank 1 on both sides of the waist groove portion 11 in step S300 includes:
s301, sleeving a split second mold core 2 on a second rotating shaft 81, wherein the sleeved part of the second rotating shaft 81 and the second mold core 2 is conical;
s302, embedding the waist groove part 11 into a cavity of the second mold core 2, and filling the support ring 3 into the waist groove part 11;
s303, sliding the second rotating shaft 81 along the axial direction towards the direction of the conical tip, so as to extrude the second mold core 2, and enabling the second mold core 2 and the support ring 3 to clamp the annular blank 1;
s304, driving the second mold core 2 to rotate through the second rotating shaft 81; meanwhile, the second spinning wheel 72 is fed towards the axis of the annular blank 1 along the first side surface of the outer contour of the second mold core 2, the first bent portion 111 on one side of the waist groove portion 11 is spun, the third spinning wheel 73 is fed towards the axis of the annular blank 1 along the second side surface of the outer contour of the second mold core 2, and the second bent portion 112 on the other side of the waist groove portion 11 is spun to form a W-shaped metal sealing ring, wherein the first bent portion 111 and the second bent portion 112 are symmetrical along the radial center plane of the annular blank 1.
In the embodiment, the second mold core 2 is designed into a petal type, and includes a mold core a21, a mold core B22, a mold core C23 and a mold core D24, and the method for spinning the portions of the annular blank 1 located at both sides of the waist groove portion 11 is as follows:
embedding the waist groove part 11 into a cavity of the second mold core 2, wherein a first bending part 111 at one side of the waist groove part 11 and a second bending part 112 at the other side of the waist groove part 11 are required to be symmetrical along a radial central plane of the annular blank 1, and then filling the support ring 3 into the waist groove part 11;
in this embodiment, two side edges of the mold core a21 and the mold core C23 are straight edges respectively, and the mold core a21, the mold core B22, the mold core C23 and the mold core D24 are circular after being assembled; the process of embedding the waist groove portion 11 in the cavity of the second mold core 2 includes: firstly, respectively assembling a mold core B22 and a mold core D24 to a conical part of a second rotating shaft 81, wherein the outer contours of the mold core B22 and the mold core D24 are smaller than the inner contour of the waist groove part 11, and sleeving the annular blank 1 with the waist groove part 11 on the outer sides of the mold core B22 and the mold core D24 to align the waist groove part 11 with the cavities of the mold core B22 and the mold core D24; then moving the mold core B22 and the mold core to enable the waist groove part 11 to be respectively embedded into the mold cavities of the mold core B22 and the mold core D24; then, the mold core a21 and the mold core C23 are mounted and arranged on the conical part of the second rotating shaft 81, and the mold core a21 and the mold core C23 are moved to enable the waist groove part 11 to be respectively embedded into the mold cavities of the mold core a21 and the mold core C23; finally, the second rotating shaft 81 is moved toward the direction of the tip of the conical portion, and the core a21, the core B22, the core C23 and the core D24 are pressed against each other.
The split second mold core 2 is sleeved on the second rotating shaft 81; the second rotating shaft 81 can be made to slide in the axial direction towards the direction of the conical tip, thereby pressing the second core 2, while the second core 2 and the support ring 3 clamp the annular blank 1;
the second rotating shaft 81 drives the second mold core 2 to rotate, and simultaneously, the second rotary wheel 72 feeds along a first side surface of the outer contour of the second mold core 2 towards the axis of the annular blank 1 to spin the first bending part 111 positioned at one side of the waist groove part 11; meanwhile, the third rotating wheel 73 is fed towards the axis of the annular blank 1 along the second side surface of the outer contour of the second mold core 2, and the second bending part 112 located on the other side of the waist groove part 11 is spun to form a W-shaped metal sealing ring.
The second rotating shaft 81 drives the second mold core 2 to rotate; meanwhile, the second rotary wheel 72 and the third rotary wheel 73 are fed towards the axis of the annular blank 1 along the first side surface of the outer contour of the second mold core 2 and the second side surface of the outer contour of the second mold core 2, so that the W-shaped metal sealing ring can be formed.
Example 2
As shown in fig. 1 and 2, the invention also claims a spinning device of a W-shaped metal sealing ring, which comprises a waist groove spinning device 9 and two end face spinning devices 10 for processing a waist groove part 11 in an annular blank 1;
the two end-face spinning device 10 comprises
A second rotation shaft 81, the second rotation shaft 81 including a conical portion having a conical shape;
the second mold core 2 is composed of at least two split mold cores, and each split mold core is in transmission connection with the conical part of the second rotating shaft 81; the split mold core comprises a cavity matched with the shape of the waist groove part 11, a first side surface matched with the shape of a first bent part 111 of the W-shaped metal sealing ring, and a second side surface matched with the shape of a second bent part 112 of the W-shaped metal sealing ring;
a second spinning roller 72, the second spinning roller 72 being always in contact with the outer surface of the first bent portion 111 during spinning, and being capable of feeding toward the axis of the second rotating shaft 81;
and a third spinning roller 73, wherein the third spinning roller 73 is always in contact with the outer surface of the second bent portion 112 during spinning, and can be fed toward the axis of the second rotating shaft 81.
In the invention, a second split mold core 2 is sleeved on a second rotating shaft 81; embedding the waist groove part 11 into a cavity of the second mold core 2, wherein a first bending part 111 at one side of the waist groove part 11 and a second bending part 112 at the other side of the waist groove part 11 are required to be symmetrical along a radial central plane of the annular blank 1, and then filling the support ring 3 into the waist groove part 11;
sliding the second rotating shaft 81 in the axial direction toward the direction of the conical tip to press the second mold core 2, at which time the second mold core 2 and the support ring 3 clamp the ring-shaped blank 1;
the second rotating shaft 81 drives the second mold core 2 to rotate, and simultaneously, the second rotary wheel 72 feeds along a first side surface of the outer contour of the second mold core 2 towards the axis of the annular blank 1 to spin the first bending part 111 positioned at one side of the waist groove part 11; meanwhile, the third rotating wheel 73 is fed towards the axis of the annular blank 1 along the second side surface of the outer contour of the second mold core 2, and the second bending part 112 located on the other side of the waist groove part 11 is spun to form a W-shaped metal sealing ring.
The second rotating shaft 81 drives the second mold core 2 to rotate; meanwhile, the second rotary wheel 72 and the third rotary wheel 73 are fed towards the axis of the annular blank 1 along the first side surface of the outer contour of the second mold core 2 and the second side surface of the outer contour of the second mold core 2, so that the W-shaped metal sealing ring can be formed. The two-end-face spinning device 10 is simple to assemble and convenient to disassemble, and the W-shaped metal sealing ring with uniform spinning can be obtained.
As shown in fig. 1 and 11, in the present embodiment, the two end-face spinning device 10 further includes a support plate 101, the support plate 101 includes a support plate body 102 sleeved on the second rotating shaft 81 and a limiting portion 104 arranged along a side circumference of the support plate body 102, each split mold core is slidably connected to the support plate 101 through a guide rail 105, and each mold core is connected to the limiting portion 104 through a return spring 103.
In this embodiment, a step plate 106 is machined on the second rotating shaft 81, and the step plate 106 is fixedly connected with the support plate 101 through a bolt, so as to drive the step plate 106 to rotate.
In the present embodiment, the guide rail 105 includes a guide rail E and a guide rail F respectively provided on the support plate 101, the guide rail E and the guide rail F being perpendicular to each other; the second mold core 2 comprises a mold core A21, a mold core B22, a mold core C23 and a mold core D24; the two side edges of the mold core A21 and the mold core C23 are straight edges respectively, and the mold core A21, the mold core B22, the mold core C23 and the mold core D24 are circular after being assembled. The mold core A21 and the mold core C23 can slide on the guide rail F, and the mold core B22 and the mold core D24 can slide on the guide rail E; when the split mold core slides on the guide rail 105, the limiting part 104 can prevent the split mold core from sliding out of the guide rail 105, and the return spring 103 can realize the return of the device.
In this embodiment, when assembling the annular blank 1 and the second mold core, first respectively assembling the mold core B22 and the mold core D24 to the guide rail E, at this time, the mold core B22 and the mold core D24 approach to the middle of the guide rail E, and sleeving the annular blank 11 with the waist groove 11 on the outer sides of the mold core B22 and the mold core D24, so that the waist groove 11 is aligned with the cavities of the mold core B22 and the mold core D24; then the mold core B22 and the mold core D24 are moved along the guide rail E, so that the waist groove parts are respectively embedded into the mold cavities of the mold core B22 and the mold core D24, the mold core A21 and the mold core C23 are assembled on the guide rail E, and then the mold core A21 and the mold core C23 are moved along the guide rail E, so that the waist groove parts 11 are respectively embedded into the mold cavities of the mold core A21 and the mold core C23; finally, the supporting plate 101 is mounted on the second rotating shaft 81, so that the mold core a21, the mold core B22, the mold core C23 and the mold core D24 are in transmission connection with the conical part of the second rotating shaft 81 respectively, and the second rotating shaft 81 is pushed to move towards the tip of the conical part to tightly press the mold core a21, the mold core B22, the mold core C23 and the mold core D24 respectively. When the machining is completed, the second rotating shaft 81 is detached, then the core a21 and the core C23 are detached, and finally the core B22 and the core D24 are detached.
As shown in fig. 2, in the present embodiment, the waist groove spinning device 9 includes
A first rotating shaft 91;
the first mold core 5, the first mold core 5 includes a left mold core 51 and a right mold core 52 which are respectively connected with the first rotating shaft 91 in a transmission manner, the left mold core 51 and the right mold core 52 can respectively move along the axial direction of the first rotating shaft 91, and a space is reserved between the left mold core 51 and the right mold core 52 before spinning;
a first pressing plate 61, wherein the first pressing plate 61 presses the annular blank 1 on the left mold core 51;
a second press plate 62, the second press plate 62 pressing the annular blank 1 against the right mold core 52;
and the first rotating wheel 71, the first rotating wheel 71 is perpendicular to the axis of the first rotating shaft 91 and is positioned on the plane where the symmetrical centers of the left mold core 51 and the right mold core 52 are positioned, and the first rotating wheel 71 can feed to the axis of the first rotating shaft 91 in the spinning process.
As shown in fig. 2, in the present embodiment, the distance reserved between the left core 51 and the right core 52 before the spinning process is equal to the length of the waist groove 11 after the expansion.
In the embodiment, the distance between the left mold core 51 and the right mold core 52 is adjusted, the length of the distance is equal to the length of the expanded waist groove 11, the annular blank 1 is sleeved on the top of the left mold core 51 and the right mold core 52, then the part of the annular blank 11 sleeved on the left mold core 51 is pressed and sleeved by the first pressing plate 61, the part of the annular blank 1 sleeved on the right mold core 52 is pressed and sleeved by the second pressing plate 62, and the annular blank 1 can be extruded on the top of the left mold core 51 and the right mold core 52; when the first mold core 55 rotates, the first rotating wheel 71 is fed towards the axis of the annular blank 11 along the direction perpendicular to the outer surface of the annular blank 11, so as to spin the annular blank 11, and at the same time, the left mold core 51 and the right mold core 52 respectively move towards the radial center of the annular blank 1 until the left mold core 51 contacts with the right mold core 52; the annular blank 1 is spun to form a waist groove 11.
According to the invention, the annular blank 1 is horizontally fed through the left mold core 51 and the right mold core 52, the first pressing plate 61 and the second pressing plate 62, and then the first rotating wheel 71 feeds towards the axis of the annular blank 1 along the direction vertical to the outer surface of the annular blank 1, so that the waist groove part 11 with uniform spinning can be obtained.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A spinning forming method of a W-shaped metal sealing ring is characterized by comprising the following steps:
s100, calculating the height of an annular blank (1) of the W-shaped metal sealing ring according to the axial section of the W-shaped metal sealing ring, and preparing the annular blank (1) with the height;
s200, processing an annular waist groove part (11) along the radial center of the annular blank (1) prepared in the step S100 in a spinning mode, wherein the waist groove part (11) is sunken towards the direction of the axis of the annular blank;
s300, spinning parts, located on two sides of a waist groove part (11), in the annular blank (1) by using two end face spinning devices (10) to form a W-shaped metal sealing ring;
the two end surface spinning device (10) comprises:
a support ring (3);
a second rotating shaft (81), wherein the second rotating shaft (81) comprises a conical part in a conical shape;
the second mold core (2) is composed of at least two split mold cores, and each split mold core is in transmission connection with the conical part of the second rotating shaft (81); the split mold core comprises a cavity matched with the shape of the waist groove part (11), a first side face matched with the shape of a first bending part (111) of the W-shaped metal sealing ring, and a second side face matched with the shape of a second bending part (112) of the W-shaped metal sealing ring;
before spinning the parts of the annular blank (1) positioned at two sides of the waist groove part (11), the waist groove part (11) is embedded into a cavity of the second mold core (2) by the second rotating shaft (81), and the support ring (3) is filled into the waist groove part (11), so that the support ring (3) and the second mold core (2) clamp the annular blank (1).
2. The method of claim 1, wherein the step of calculating the height of the annular blank (1) in the step S1 comprises:
s101, obtaining an axial section profile (6) of the W-shaped metal sealing ring, wherein the obtained axial section profile is symmetrical along the center line of the waist groove part (11);
s102, offsetting the cross section profile on one side of the central line according to half of the thickness of the W-shaped metal sealing ring to obtain a middle contour line, and obtaining the length of the middle contour line;
s103, connecting two highest points symmetrical along a central line in the axial section outline to obtain an intersection point with the central line, and drawing a straight line with the same length as the middle contour line by taking the intersection point as a starting point;
s104, the straight line drawn in the step S103 is symmetrical along the center line, and the height of the annular blank (1) is obtained.
3. The method of spin forming a W-shaped metal seal ring according to claim 1, wherein the method of preparing the ring-shaped blank (1) in step S100 comprises:
rolling the plate (4) of the plate (4) according to the radius of the W-shaped sealing ring, and welding the end part of the rolled plate (4) to obtain an annular blank (1);
or pre-opening the plate (4), and then cutting the allowance after adopting a hole flanging process to obtain the annular blank (1) without the welding line.
4. The method of claim 1, wherein the annular blank (1) is processed by a waist groove spinning device (9);
the waist groove spinning device (9) comprises:
a first rotating shaft (91);
the first mold core (5) comprises a left mold core (51) and a right mold core (52) which are in transmission connection with a first rotating shaft (91) respectively, the left mold core (51) and the right mold core (52) can move along the axis direction of the first rotating shaft (91) respectively, and a space is reserved between the left mold core (51) and the right mold core (52) before spinning;
a first pressing plate (61), wherein the first pressing plate (61) presses the annular blank (1) on the left mold core (51);
a second press plate (62), wherein the second press plate (62) presses the annular blank (1) on the right mold core (52);
the first spinning wheel (71), the first spinning wheel (71) is perpendicular to the axis of the first rotating shaft (91) and is positioned on the plane where the symmetrical centers of the left mold core (51) and the right mold core (52) are positioned, and the first spinning wheel (71) can feed to the axis of the first rotating shaft (91) in the spinning process;
the spinning method of the waist groove (11) in step S200 includes:
s201, sleeving an annular blank (1) on the outer side of a first mold core (5), wherein the first mold core (5) comprises a left mold core (51) and a right mold core (52) which are symmetrical along the radial central plane of the annular blank (1), and a space is reserved between the left mold core (51) and the right mold core (52);
s202, pressing the part of the annular blank (1) sleeved on the left mold core (51) through a first pressing plate (61), and pressing the part of the annular blank (1) sleeved on the right mold core (52) through a second pressing plate (62);
s203, rotating the first mold core (5), and respectively moving the left mold core (51) and the right mold core (52) towards the radial center of the annular blank (1) until the left mold core (51) is contacted with the right mold core (52);
s204, feeding the first rotary wheel (71) towards the axis of the annular blank (1) along the direction vertical to the outer surface of the annular blank (1) while rotating the first mold core (5), and spinning the annular blank (1) to form a waist groove part (11).
5. The method of claim 4, wherein the step of spin forming the W-shaped metal sealing ring comprises the steps of: the reserved space between the left mold core (51) and the right mold core (52) is equal to the length of the unfolded waist groove part (11).
6. The method of claim 1, further comprising the step of: the two end surface spinning device (10) further comprises:
a second spinning roller (72), wherein the second spinning roller (72) is always in contact with the outer surface of the first bent part (111) in the spinning process and can feed towards the axis of the second rotating shaft (81);
a third spinning roller (73), wherein the third spinning roller (73) is always in contact with the outer surface of the second bent part (112) in the spinning process and can feed towards the axis of the second rotating shaft (81);
the method for spinning the portions of the annular blank (1) on the two sides of the waist groove (11) in the step S300 includes:
s301, sleeving a split second mold core (2) on a second rotating shaft (81), wherein the sleeved part of the second rotating shaft (81) and the second mold core (2) is conical;
s302, embedding the waist groove part (11) into a cavity of a second mold core (2), and filling a support ring (3) into the waist groove part (11);
s303, sliding the second rotating shaft (81) along the axial direction towards the direction of the conical tip, so as to extrude the second mold core (2), and enabling the second mold core (2) and the support ring (3) to clamp the annular blank (1);
s304, driving a second mold core (2) to rotate through a second rotating shaft (81); meanwhile, the second spinning wheel (72) is fed towards the axis of the annular blank (1) along the first side surface of the outer contour of the second mold core (2), a first bent part (111) positioned on one side of the waist groove part (11) is spun, the third spinning wheel (73) is fed towards the axis of the annular blank (1) along the second side surface of the outer contour of the second mold core (2), a second bent part (112) positioned on the other side of the waist groove part (11) is spun, and a W-shaped metal sealing ring is formed, wherein the first bent part (111) and the second bent part (112) are symmetrical along the radial center plane of the annular blank (1).
7. The utility model provides a spinning device of W type metal obturating ring which characterized in that: comprises a waist groove spinning device (9) and two end surface spinning devices (10) which are used for processing a waist groove part (11) in an annular blank (1);
the two end surface spinning device (10) comprises:
a support ring (3);
a second rotating shaft (81), wherein the second rotating shaft (81) comprises a conical part in a conical shape;
the second mold core (2) is composed of at least two split mold cores, and each split mold core is in transmission connection with the conical part of the second rotating shaft (81); the split mold core comprises a cavity matched with the shape of the waist groove part (11), a first side face matched with the shape of a first bending part (111) of the W-shaped metal sealing ring, and a second side face matched with the shape of a second bending part (112) of the W-shaped metal sealing ring; the waist groove part (11) is embedded into a cavity of the second mold core (2); the support ring (3) is filled into the waist groove part (11) and is matched with the second mold core (2) to clamp the annular blank (1);
a second spinning roller (72), wherein the second spinning roller (72) is always in contact with the outer surface of the first bent part (111) in the spinning process and can feed towards the axis of the second rotating shaft (81);
and a third spinning wheel (73), wherein the third spinning wheel (73) is always in contact with the outer surface of the second bent part (112) in the spinning process, and can be fed towards the axis of the second rotating shaft (81).
8. The apparatus of claim 7, wherein: the two end face spinning device (10) further comprises a supporting plate (101), the supporting plate comprises a supporting plate body (102) sleeved on the second rotating shaft (81) and limiting portions (104) arranged along the circumference of the side face of the supporting plate body (102), each split type mold core is connected with the supporting plate in a sliding mode through a guide rail (105), and each mold core is connected with the limiting portions (104) through a return spring (103).
9. The apparatus of claim 7, wherein: the waist groove spinning device (9) comprises
A first rotating shaft (91);
the first mold core (5) comprises a left mold core (51) and a right mold core (52) which are in transmission connection with a first rotating shaft (91) respectively, the left mold core (51) and the right mold core (52) can move along the axis direction of the first rotating shaft (91) respectively, and a space is reserved between the left mold core (51) and the right mold core (52) before spinning;
a first pressing plate (61), wherein the first pressing plate (61) presses the annular blank (1) on the left mold core (51);
a second press plate (62), wherein the second press plate (62) presses the annular blank (1) on the right mold core (52);
the first spinning wheel (71) is perpendicular to the axis of the first rotating shaft (91) and is positioned on a plane where the symmetrical centers of the left mold core (51) and the right mold core (52) are located, and the first spinning wheel (71) can feed to the axis of the first rotating shaft (91) in the spinning process.
10. The apparatus of claim 9, wherein: the reserved space between the left mold core (51) and the right mold core (52) before spinning is equal to the length of the waist groove part (11) after being unfolded.
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| CN202110004999.7A CN112845783B (en) | 2021-01-04 | 2021-01-04 | Spin forming method and spin forming device for W-shaped metal sealing ring |
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| CN202110004999.7A CN112845783B (en) | 2021-01-04 | 2021-01-04 | Spin forming method and spin forming device for W-shaped metal sealing ring |
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| CN104624756B (en) * | 2014-12-31 | 2017-05-10 | 北京北冶功能材料有限公司 | Forming technology for metal elastic sealing ring |
| CN204953625U (en) * | 2015-07-29 | 2016-01-13 | 中航空天发动机研究院有限公司 | External pressure forming device that " W " shape metal was obturaged and is encircled |
| CN105750389B (en) * | 2016-04-06 | 2017-09-05 | 江阴职业技术学院 | Engine thin wall special-shaped seal ring shaped device |
| CN110125214A (en) * | 2019-04-08 | 2019-08-16 | 北方工业大学 | Manufacturing method of W-shaped sealing ring of aero-engine |
| CN110918750B (en) * | 2019-12-02 | 2021-05-04 | 西安航天动力研究所 | Thin-wall metal omega-section sealing ring spinning forming device |
| CN111001700B (en) * | 2019-12-30 | 2021-01-15 | 北京航空航天大学 | 3D hydraulic forming method for special-shaped sealing ring of aero-engine |
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