CN113245795A - Stretching expansion type continuous forming process - Google Patents
Stretching expansion type continuous forming process Download PDFInfo
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- CN113245795A CN113245795A CN202110615707.3A CN202110615707A CN113245795A CN 113245795 A CN113245795 A CN 113245795A CN 202110615707 A CN202110615707 A CN 202110615707A CN 113245795 A CN113245795 A CN 113245795A
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- material plate
- stretching
- forming process
- stretch
- cutting
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000008569 process Effects 0.000 title claims abstract description 38
- 238000005520 cutting process Methods 0.000 claims abstract description 21
- 238000004080 punching Methods 0.000 claims abstract description 18
- 238000007493 shaping process Methods 0.000 claims abstract description 10
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 238000009966 trimming Methods 0.000 claims abstract description 4
- 230000009467 reduction Effects 0.000 claims abstract description 3
- 238000003466 welding Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a stretching and expanding continuous forming process which comprises the following steps: s1, punching positioning holes on the material plate; s2, blanking and cutting the material plate; s3, primarily stretching round holes on the material plates; s4, performing diameter reduction and stretching on the circular holes of the material plate in stages; s5, trimming edges of the material plates; s6, expanding the circular holes of the material plate by stages; s7, shaping a material plate; s8, punching the material plate; s9, turning over the material plate; and S10, cutting and separating the material plate to obtain a finished product. The invention reduces the usage amount of the die, reduces the material consumption, saves the cost, and has the advantages of high strength, stable product quality and the like due to the integral molding of the product.
Description
Technical Field
The invention relates to the field of mechanical part forming and processing, in particular to a stretching and expanding type continuous forming process.
Background
The conventional processing of mechanical parts with more complicated structural appearance is multi-part independent processing, and finally, the mechanical parts are assembled into a whole by welding. Each part needs independent processing technology and quality control, and the cost is higher, and there is the product intensity difference in the spare part of many parts welding forming simultaneously, the unstable problem of product quality. If the structural appearance of the part needs to be stretched and expanded, the processed part also has the problems of poor product thinning rate, poor side line, unstable punching position and the like.
Disclosure of Invention
In view of the above-mentioned defects of the prior art, the present invention aims to provide a stretch-expansion continuous forming process, which reduces the usage amount of dies, material consumption and cost, and has the advantages of high strength and stable product quality due to the integral forming of the product.
The purpose of the invention is realized by the following technical scheme:
a stretch-expansion continuous forming process comprises the following steps:
s1, punching positioning holes on the material plate;
s2, blanking and cutting the material plate;
s3, primarily stretching round holes on the material plates;
s4, performing diameter reduction and stretching on the circular holes of the material plate in stages;
s5, trimming edges of the material plates;
s6, expanding the circular holes of the material plate by stages;
s7, shaping a material plate;
s8, punching the material plate;
s9, turning over the material plate;
and S10, cutting and separating the material plate to obtain a finished product.
Further, the positioning holes in step S1 are two pin positioning holes, and the two pin positioning holes are located on two long sides of the flitch, respectively.
Further, the blanking and cutting of the material plate in the step S2 sequentially includes the following steps: cutting a product connecting hole, cutting a product separating part, cutting a right excess material and cutting a left excess material.
Further, the first drawing circular hole of the material plate in the step S3 is the drawing of the upper and lower circular holes of the material.
Further, the step of reducing the diameter of the circular hole and stretching the material plate in stages in the step S4 includes the following steps:
s41, reducing and stretching the material after the material is reset;
s42, reducing and stretching on the basis of the step S41;
s43, reducing and stretching on the basis of the step S42;
s44, reducing and stretching are carried out on the basis of the step S43.
Further, in step S4, the circular holes are reduced in diameter by an equal difference at each stage.
Further, in the material plate circular hole staged expansion ring of the step S6, the expansion ring is a closed circular ring after the completion of a plurality of staged expansion rings.
Further, the following steps are included after step S5 before step S6:
SJ, cutting off a circular plate at the bottom of the circular hole, wherein the circular plate and the bottom of the circular hole are concentric, and the diameter of the circular hole is smaller than that of the bottom of the circular hole.
Further, the step S7 includes shaping and chamfering the bottom surface of the circular hole in the material plate shaping.
Further, the punching of the material plate in the step S8 includes punching the bottom of the circular hole.
The invention has the following advantages:
compared with the scheme that multiple parts are processed independently and then welded, the process has the advantages of high strength and good quality. Meanwhile, the process adopts a scheme of reducing diameter and stretching to form holes by stages, so that the material is not cracked in the stretching forming process, the thinning rate is not over-poor, and the quality of the finally produced parts is guaranteed. In addition, the technical scheme of staged expanding rings can ensure that the expanding rings can be smoothly completed in the round holes formed by stretching, and the production quality requirement of products is met.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
The drawings of the invention are illustrated as follows:
fig. 1 is a schematic top view of a blank after the step S1 in the stretch-expansion continuous forming process of the embodiment.
Fig. 2 is a schematic top view of the blank after the step S2 in the stretch-expansion continuous forming process of the embodiment.
Fig. 3 is a schematic top view of the blank after the step S3 in the stretch-expansion continuous forming process of the embodiment.
Fig. 4 is a schematic front view of the blank after the step S3 in the stretch-expansion continuous forming process of the embodiment.
Fig. 5 is a schematic top view of the blank after the step S4 in the stretch-expansion continuous forming process of the embodiment.
Fig. 6 is a schematic front view of the blank after the step S4 in the stretch-expansion continuous forming process of the embodiment.
Fig. 7 is a schematic top view of the blank after the step S5 in the stretch-expansion continuous forming process of the embodiment.
Fig. 8 is a schematic top view of the blank after the step S6 in the stretch-expansion continuous forming process of the embodiment.
Fig. 9 is a schematic front view of the blank after the step S6 in the stretch-expansion continuous forming process of the embodiment.
Fig. 10 is a schematic top view of the blank after the step S7 in the stretch-expansion continuous forming process of the embodiment.
Fig. 11 is a schematic front view of the blank after the step S7 in the stretch-expansion continuous forming process of the embodiment.
Fig. 12 is a schematic top view of the blank after the step S8 in the stretch-expansion continuous forming process of the embodiment.
Fig. 13 is a schematic top view of the blank after the step S9 in the stretch-expansion continuous forming process of the embodiment.
Fig. 14 is a schematic front view of the blank after the step S9 in the stretch-expansion continuous forming process of the embodiment.
Fig. 15 is a schematic top view of the blank after the step S10 in the stretch-expansion continuous forming process of the embodiment.
Fig. 16 is a schematic front view of the blank after the step S10 in the stretch-expansion continuous forming process of the embodiment.
In the figure: 1. a material plate; 2. material parts; 3. inserting pin positioning holes; 4. a product connection hole; 5. a product divider; 6. the right excess material; 7. left excess material; 8. a circular hole; 9. expanding rings; 10. and (6) punching.
Detailed Description
The invention is further illustrated by the following figures and examples.
Example (b):
as shown in fig. 1 to 15, a stretch-expansion continuous molding process includes the steps of:
s1, placing the flitch 1 into continuous forming equipment, and punching two contact pin positioning holes 3 on the inlet end of the flitch 1 by the equipment to position the subsequent continuous forming processing;
s2, after the pin positioning holes 3 are punched, the material plate 1 moves forwards and enters a blanking cutting station, the pin positioning holes 3 are used for positioning, and the product connecting holes 4, the adjacent two product separating parts 5, the right excess material 6 and the left excess material 7 are sequentially cut off step by step to form the outline of the material part 2 of the product;
and S3, after the previous process is completed, the material plate 1 continues to move forwards and is positioned on the stretching station through the pin inserting positioning hole 3, the equipment jacks up the material part 2, then the material part 2 is stretched through the stretching die by the round hole 8, and the size of the stretching round hole 8 is phi 36 x 32 mm.
S4, after the round hole 8 is stretched, controlling the flitch 1 to continue to move to the diameter reducing station of the round hole 8 in the first stage, and after the pin positioning hole 3 is positioned, stretching by using a round hole 8 stretching die with the diameter of 31.5 mm and the diameter of 32 mm; after the stretching is finished, the material plate 1 is continuously controlled to continuously move to the diameter reducing station of the round hole 8 in the second stage, and after the pin positioning hole 3 is positioned, the round hole 8 with the diameter of 27 mm is used for stretching by using a stretching die; after the stretching is finished, the material plate 1 is continuously controlled to continuously move to the diameter reducing station of the round hole 8 in the third stage, and after the pin positioning hole 3 is positioned, a round hole 8 stretching die with the diameter of 22.5 mm and the diameter of 32mm is used for stretching; after the stretching is finished, the material plate 1 is continuously controlled to continuously move to the diameter reducing station of the round hole 8 in the third stage, and after the pin positioning hole 3 is positioned, the round hole 8 with the diameter of 18 mm or 32mm is used for stretching;
s5, controlling the flitch 1 to move forwards continuously and to be positioned on a trimming station through the pin positioning hole 3, after the pin positioning hole 3 is positioned, finishing the edge of the flitch 1 to enable the line variation tolerance to be within +/-0.2 mm, and simultaneously cutting off a concentric circular plate at the top of the stretching circular hole 8, wherein the diameter of the circular hole 8 is smaller than that of the bottom of the circular hole 8; the processing is convenient for providing enough deformation space for the expansion ring 9 area and a material deformation area in the expansion ring 9 stage, and the wall of the round hole 8 is prevented from being torn in the expansion ring 9 process.
S6, controlling the flitch 1 to move forwards continuously, positioning the flitch on a first expansion ring 9 station through the pin inserting positioning hole 3, and expanding the expansion ring 9 on the side wall of the circular hole 8 by using an expansion ring 9 die, wherein the expansion ring 9 expands three arc sections at this time; after the first-time expansion ring 9 is completed, the material plate 1 is continuously controlled to continuously move downwards to the station of the second expansion ring 9, after the pin inserting positioning hole 3 is positioned, the expansion ring 9 mold is used for expanding the area expansion ring 9 without the circular hole 8 side wall expansion ring 9, and the expansion ring 9 forms a closed circular ring twice.
S7, after the expansion ring 9 is completed, controlling the material plate 1 to continuously move to the shaping station, and after the pin positioning hole 3 is positioned, shaping the material part 2 by the shaping die;
s8, after shaping is completed, the material plate 1 is controlled to continuously move to a punching 10 station, after the pin positioning hole 3 is positioned, the material part 2 after shaping is subjected to punching 10 processing, so that the product appearance meets the requirement, and the punching 10 range comprises a hole at the bottom of the round hole 8.
S9, after the punching 10 is completed, the material plate 1 is controlled to continue to move towards the turnover station, after the pin positioning holes 3 are positioned, the die retreats and presses the two sides of the material part 2 to turn the two sides of the material part 2, and the appearance of the product meets the requirements.
And S10, finally, controlling the flitch 1 to continuously move to the separation station, positioning the pin positioning hole 3, and punching and cutting off the material part 2 connected with the flitch 1 by using a die to obtain the product.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (10)
1. A stretching and expanding type continuous forming process is characterized by comprising the following steps:
s1, punching positioning holes on the material plate;
s2, blanking and cutting the material plate;
s3, primarily stretching round holes on the material plates;
s4, performing diameter reduction and stretching on the circular holes of the material plate in stages;
s5, trimming edges of the material plates;
s6, expanding the circular holes of the material plate by stages;
s7, shaping a material plate;
s8, punching the material plate;
s9, turning over the material plate;
and S10, cutting and separating the material plate to obtain a finished product.
2. The stretch-expanding continuous molding process according to claim 1, wherein the positioning holes in step S1 are two pin positioning holes, and the two pin positioning holes are located on two long sides of the flitch, respectively.
3. The stretch-expanding continuous forming process of claim 1, wherein the blanking and cutting of the material plate in the step S2 sequentially comprises the following steps: cutting a product connecting hole, cutting a product separating part, cutting a right excess material and cutting a left excess material.
4. The stretch-expanding continuous forming process according to claim 1, wherein the first drawing round hole of the web in step S3 is a round hole moving up and down of the web.
5. The stretch-expanding continuous forming process of claim 4, wherein the step of reducing the diameter of the circular hole in the material plate in stages in the step S4 comprises the steps of:
s41, reducing and stretching the material after the material is reset;
s42, reducing and stretching on the basis of the step S41;
s43, reducing and stretching on the basis of the step S42;
s44, reducing and stretching are carried out on the basis of the step S43.
6. The stretch-expanding continuous forming process according to claim 1, wherein the circular holes are reduced in size by equal difference at each stage in step S4.
7. The stretch-expanding continuous forming process according to claim 1, wherein the expander is a closed ring after the completion of a plurality of stages of the staged expanders in the round hole of the flitch of the step S6.
8. The stretch-expanding continuous forming process as claimed in claim 1, further comprising the steps of, after step S5 before step S6:
SJ, cutting off a circular plate at the bottom of the circular hole, wherein the circular plate and the bottom of the circular hole are concentric, and the diameter of the circular hole is smaller than that of the bottom of the circular hole.
9. The stretch-expanding continuous molding process according to claim 1, wherein the step S7 includes chamfering the bottom surface of the circular hole.
10. The stretch-expanding continuous forming process according to claim 1, wherein the punching of the material plate in step S8 further comprises punching the bottom of the circular hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110615707.3A CN113245795B (en) | 2021-06-02 | 2021-06-02 | Stretching expansion type continuous forming process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110615707.3A CN113245795B (en) | 2021-06-02 | 2021-06-02 | Stretching expansion type continuous forming process |
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| Publication Number | Publication Date |
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| CN113245795A true CN113245795A (en) | 2021-08-13 |
| CN113245795B CN113245795B (en) | 2021-09-21 |
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| CN113245795B (en) | 2021-09-21 |
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Denomination of invention: A stretching and bulging continuous forming process Effective date of registration: 20231116 Granted publication date: 20210921 Pledgee: Sichuan Lin Shui rural commercial bank Limited by Share Ltd. Pledgor: SICHUAN TIANKUN MOULD MANUFACTURING CO.,LTD. Registration number: Y2023980065811 |
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