CN116638020A - Ball bowl forming process - Google Patents
Ball bowl forming process Download PDFInfo
- Publication number
- CN116638020A CN116638020A CN202310907869.3A CN202310907869A CN116638020A CN 116638020 A CN116638020 A CN 116638020A CN 202310907869 A CN202310907869 A CN 202310907869A CN 116638020 A CN116638020 A CN 116638020A
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- Prior art keywords
- bowl
- die
- forming
- spherical
- upper mold
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000008569 process Effects 0.000 title claims abstract description 16
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims abstract description 6
- 238000012937 correction Methods 0.000 claims abstract description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 11
- 239000010935 stainless steel Substances 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 230000008439 repair process Effects 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 3
- 238000010923 batch production Methods 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures
-
- 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
- B21D22/02—Stamping using rigid devices or tools
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/20—Making tools by operations not covered by a single other subclass
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The application relates to the technical field of machining and discloses a process for forming a spherical bowl, which comprises the following steps of 1, calculating the blanking size of the spherical bowl and blanking; step 2, assembling a correction tool clamp and a profiling die; step 3, sequentially placing a plurality of blanks into a fixture, setting working pressure and speed, and carrying out pressure test to produce a plurality of spherical bowls; step 4, checking the compactness of the contact surface of the bowl and the spherical surface of the spherical crown lining plate; step 5, repairing the mould at the local deformation position of the ball bowl, repeating the step 2, the step 3 and the step 4, and repairing the mould at least twice; and 6, pressing and forming qualified products in batches. The process steps are simple, the rebound deformation of the ball bowl is small, and the batch production is realized.
Description
Technical Field
The application relates to the technical field of machining, in particular to a process for forming a ball bowl.
Background
The spherical cap lining plate is a core component for connecting an upper support and a lower support in a track beam spherical support, is a main stress point and a bearing part of the spherical support, ensures that the upper support can rotate and move stably along the bridge forward direction, plays a vital role in shock absorption of the track beam, and as shown in figure 1, a stainless steel plate of a spherical bowl is made of 022Cr17Ni12Mo2 or 022Cr19Ni13Mo3 grade mirror surface stainless steel cold-rolled steel plate, has the thickness of 2mm, is welded on the spherical cap lining plate by adopting argon arc welding, and is fixed by using a special tool during welding, so that the spherical bowl is tightly attached to the spherical surface of the spherical cap lining plate and the spherical bowl, and meanwhile, the stainless steel plate mirror surface cannot be processed after being welded by adopting measures, so that the precision of the spherical bowl contour of a stainless steel plate must be ensured in the spherical bowl forming process.
Chinese document CN114589264a provides a processing system of thin-walled austenitic stainless steel seal head and a processing method thereof, comprising a. Blanking; B. prepressing and forming; C. heating for the first time; D. secondary stamping; E. heating for the second time; F. and (5) forming a product by three times of stamping.
The traditional method for manufacturing the ball bowl comprises the following steps: the formed stainless steel sheet is directly obtained by a punching mode of a punch press, and the rebound deformation of the part cannot be controlled in the punching forming process.
In the prior art, the ball bowl is subjected to heating stamping for many times, the steps are complex, the forming efficiency is low, and the stamping speed is high but the rebound deformation of the part cannot be controlled in the conventional technology.
Disclosure of Invention
The application provides a process for forming a ball bowl, which aims to solve the technical problems of complex stamping steps and rebound deformation of the ball bowl, and is characterized by comprising the following steps:
step 1, calculating the blanking size of a ball bowl and blanking; step 2, assembling a correction tool clamp and a profiling die; step 3, sequentially placing a plurality of blanks into a fixture, and performing pressure test to produce a plurality of spherical bowls; step 4, checking the compactness of the contact surface of the bowl and the spherical surface of the spherical crown lining plate; step 5, repairing the mould at the local deformation position of the ball bowl, repeating the step 2, the step 3 and the step 4, and repairing the mould at least twice; and 6, pressing and forming qualified products in batches.
In order to reduce the deformation of the edge of the ball bowl in the stamping process, in the step 3, the working pressure is adjusted to be 800 KN-900 KN, and the speed is adjusted to be 1 mm/s-1.5 mm/s.
In order to quickly repair and improve the molding quality, step 5, the edges of the upper die and the lower die of the pressing die are locally polished to repair the die.
Preferably, in step 1, the area of the bowl is calculated: s is S Ball bowl =2damper to determine the outer dimensions of the blanking stainless steel plate plane.
In order to facilitate rapid stamping, the profiling die comprises an upper die, a lower die, an upper die holder and a lower die holder, wherein the upper die is fixedly arranged in an upper fixing plate, an upper base plate is arranged between the upper die and the upper die holder, and a die shank of the upper die is fixedly arranged in an inner hole of the upper die holder, and the upper die holder, the upper base plate and the upper fixing plate are connected into a whole; the lower die is fixedly arranged in the lower fixing plate, a lower base plate is arranged between the lower die and the lower die holder, the lower base plate and the lower fixing plate are connected into a whole.
In order to facilitate the positioning of the lower die, a positioning ring is arranged on one side of the lower fixing plate, which faces the upper die.
In order to ensure accurate stamping positions and reduce the deformation of the spherical bowl, a plurality of guide posts are arranged between the upper die base and the lower die base, and the guide posts are connected to the upper die base through guide sleeves.
The application has the following beneficial effects:
1. the method has the advantages of simple steps and small rebound deformation, and can realize batch production: compared with the existing bowl, the joint degree of the local position and the arc surface of the spherical crown lining plate is not enough, and batch production cannot be realized, the edge of the repeatedly punched bowl is prevented from rebound deformation through pressure test, inspection and repeated polishing of the matched die, the contour precision of the bowl is ensured, meanwhile, the continuous production capacity is realized, in the actual production process, the working pressure is 800 KN-900 KN, the speed is 1 mm/s-1.5 mm/s, the forming degree and the forming speed are the best, the product design requirement and the product quality are met, and the mass production efficiency of the product is improved.
Drawings
FIG. 1 is a schematic view of the structure of a crown liner and bowl according to the present application;
FIG. 2 is a cross-sectional view of a medium pressure die of the present application;
FIG. 3 is a schematic view of the upper and lower molds of FIG. 2;
FIG. 4 is a schematic view of the upper die holder of FIG. 2;
FIG. 5 is a schematic view of the upper plate of FIG. 2;
FIG. 6 is a schematic view of the upper fixing plate in FIG. 2;
FIG. 7 is a schematic view of the lower die holder of FIG. 2;
FIG. 8 is a schematic view of the lower plate of FIG. 2;
FIG. 9 is a schematic view of the structure of the lower fixing plate in FIG. 2;
fig. 10 is a schematic structural view of the positioning ring in fig. 2.
Detailed Description
The following is a further detailed description of the embodiments:
1. reference numerals in the drawings of the specification include: the ball crown lining plate 1, the ball bowl 2, the upper die 3, the lower die 4, the upper die holder 5, the lower die holder 6, the upper fixing plate 7, the upper base plate 8, the die shank 9, the lower fixing plate 10, the lower base plate 11, the positioning ring 12, the guide post 13, the guide sleeve 14, the push plate 15, the ejector pin 16, the rubber pad 17 and the local repair position 18.
Example 1
A process for forming a ball bowl comprises the following steps:
step 1, calculating the blanking size: calculating the area of the stainless steel thin plate spherical bowl 2 according to the size of the design drawing of the product, wherein the area of the spherical bowl 2 is equal to the product of the large circumference on the spherical surface cut into the spherical bowl and the height of the spherical bowl 2, namely S Ball bowl =2damper (in the formula, R is the sphere radius, h is the height of the sphere bowl 2), and the outline dimension of the plane of the mirror surface stainless steel plate is determined according to the area of the sphere bowl 2;
step 2, wire cutting and blanking: because the parts are mass production products, the single-piece blanking time period is longer, the material waste is more, reasonable raw material specifications can be given according to the size of the cutting equipment and the blanking size of the parts, and then the single-piece blanks are processed by wire cutting;
step 3, assembling and correcting a fixture clamp and a profiling die: assembling all parts according to a special tooling diagram, fixing by a 100T oil press, checking whether the surface fitting degree of an upper die 3 and a lower die 4 of a pressing die meets the requirement, then loading a mirror surface stainless steel flat sheet blank, locking a die, correcting and fixing;
step 4, pressure testing: before operation, checking whether each part of the oil press is normal, adjusting the working pressure of the oil press to 800 KN-900 KN at the speed of 1 mm/s-1.5 mm/s according to the requirement, starting up to test pressure, checking whether a compression mold has cracks, loosening a fixture after the pressure test is finished, taking out the stainless steel sheet spherical bowl 2 which is molded by compression, loading into another blank, molding by compression, and repeating the operation to manufacture 3-4 parts;
step 5, checking the manufactured and formed part: checking the manufactured parts one by one according to the drawing requirement of the designed product, attaching the spherical surface of the spherical bowl 2 to the spherical surface of the spherical crown liner plate 1, checking the compactness of the contact surface of the spherical bowl 2, finding that the results of 3-4 products formed by the primary pressure test are basically consistent through checking, meeting the requirement at the deeper position of the arc surface of the spherical bowl 2, and attaching the arc surface at the periphery of the arc surface by slightly rebound deformation after the thin-wall part is pressed, wherein the attaching degree of the arc surface at the local part of the arc surface at the small position is insufficient;
step 6, repairing the die: determining the repair size of the local position of the periphery of the ball bowl 2 for overcoming the rebound deformation, disassembling the die, and repairing the local positions of the spherical surfaces of the upper die 3 and the lower die 4 by polishing; and then repeating the steps 3, 4 and 5, and finally performing die repairing twice, pressing and forming qualified products, wherein when a certain number of products are produced in batch, part of product samples are required to be extracted randomly for detection, and the upper die 3 and the lower die 4 of the compression die are used for a certain time, and if deformation or damage exists, the products must be replaced;
step 7, determining the size of the molded surface of the die: and (3) detaching the upper die 3 and the lower die 4 which are qualified to be finally repaired, measuring the accurate size of each position, determining the repairing position of the ball bowl 2 which partially overcomes the rebound deformation, directly machining and repairing the upper die 3 and the lower die 4 when the upper die 3 and the lower die 4 are machined to meet the manufacturing requirement, and copying a certain number of the upper die 3 and the lower die 4 according to the requirement of mass production of products.
As shown in fig. 2-10, the profiling mold comprises an upper mold 3, a lower mold 4, an upper mold base 5 and a lower mold base 6, wherein the upper mold 3 is positioned and installed in an inner hole of an upper fixing plate 7 through a spigot and step plane, an upper base plate 8 is arranged between the upper mold 3 and the upper mold base 5, a mold shank 9 of the upper mold 3 is fixed in the inner hole of the upper mold base 5 through a positioning screw, and the upper mold base 5, the upper base plate 8 and the upper fixing plate 7 are connected into a whole through bolts;
the lower die 4 is positioned and installed in an inner hole of the lower fixed plate 10 through a spigot and step plane, a lower base plate 11 is arranged between the lower die 4 and the lower die holder 6, a positioning ring 12 is arranged on one side of the lower fixed plate 10 facing the upper die 3, and the lower die holder 6, the lower base plate 11, the lower fixed plate 10 and the positioning ring 12 are connected into a whole through bolts;
a plurality of guide posts 13 are arranged between the upper die holder 5 and the lower die holder 6, the guide posts 13 are connected to the upper die holder 5 through guide sleeves 14, and the height and the clearance value between the upper die 3 and the lower die 4 are adjusted through the guide posts 13.
The plane of the lower die holder 6 is fixed with a push plate 15, a top pin 16 and a rubber pad 17 through connecting studs and nuts.
The foregoing is merely an embodiment of the present application, and a specific structure and characteristics of common knowledge in the art, which are well known in the scheme, are not described herein, so that a person of ordinary skill in the art knows all the prior art in the application date or before the priority date, can know all the prior art in the field, and has the capability of applying the conventional experimental means before the date, and a person of ordinary skill in the art can complete and implement the present embodiment in combination with his own capability in the light of the present application, and some typical known structures or known methods should not be an obstacle for a person of ordinary skill in the art to implement the present application. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present application, and these should also be considered as the scope of the present application, which does not affect the effect of the implementation of the present application and the utility of the patent. The protection scope of the present application is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (7)
1. The process for forming the ball bowl is characterized by comprising the following steps of:
step 1, calculating the blanking size of a ball bowl and blanking; step 2, assembling a correction tool clamp and a profiling die; step 3, sequentially placing a plurality of blanks into a fixture, setting working pressure and speed, and carrying out pressure test to produce a plurality of spherical bowls; step 4, checking the compactness of the contact surface of the bowl and the spherical surface of the spherical crown lining plate; step 5, repairing the mould at the local deformation position of the ball bowl, repeating the step 2, the step 3 and the step 4, and repairing the mould at least twice; and 6, pressing and forming qualified products in batches.
2. The process for forming a bowl according to claim 1, wherein: in the step 3, the working pressure is adjusted to be 800 KN-900 KN, and the speed is adjusted to be 1 mm/s-1.5 mm/s.
3. A process for forming a bowl according to claim 2, wherein: and 5, locally polishing the edges of the upper die and the lower die of the compression die to repair the die.
4. A process for forming a bowl according to any one of claims 1 to 3, wherein: in the step 1, calculating the area of the bowl: s is S Ball bowl =2damper to determine the outer dimensions of the blanking stainless steel plate plane.
5. The process for forming a bowl according to claim 4, wherein: the compression mold comprises an upper mold, a lower mold, an upper mold seat and a lower mold seat, wherein the upper mold is fixedly arranged in an upper fixing plate, an upper base plate is arranged between the upper mold and the upper mold seat, and a mold shank of the upper mold is fixedly arranged in an inner hole of the upper mold seat, and the upper mold seat, the upper base plate and the upper fixing plate are connected into a whole; the lower die is fixedly arranged in the lower fixing plate, a lower base plate is arranged between the lower die and the lower die holder, the lower base plate and the lower fixing plate are connected into a whole.
6. The process for forming a bowl according to claim 5, wherein: the lower fixing plate is provided with a positioning ring towards one side of the upper die.
7. The process for forming a bowl according to claim 6, wherein: a plurality of guide posts are arranged between the upper die holder and the lower die holder, and the guide posts are connected to the upper die holder through guide sleeves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310907869.3A CN116638020A (en) | 2023-07-24 | 2023-07-24 | Ball bowl forming process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310907869.3A CN116638020A (en) | 2023-07-24 | 2023-07-24 | Ball bowl forming process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116638020A true CN116638020A (en) | 2023-08-25 |
Family
ID=87643751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310907869.3A Pending CN116638020A (en) | 2023-07-24 | 2023-07-24 | Ball bowl forming process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116638020A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117619978A (en) * | 2024-01-25 | 2024-03-01 | 江苏双赢锻压机床有限公司 | Die adjusting device of double-point type battery shell stamping machine tool |
-
2023
- 2023-07-24 CN CN202310907869.3A patent/CN116638020A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117619978A (en) * | 2024-01-25 | 2024-03-01 | 江苏双赢锻压机床有限公司 | Die adjusting device of double-point type battery shell stamping machine tool |
| CN117619978B (en) * | 2024-01-25 | 2024-03-26 | 江苏双赢锻压机床有限公司 | Die adjusting device of double-point type battery shell stamping machine tool |
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