CN110814149B - Machine shell thick material blanking process - Google Patents
Machine shell thick material blanking process Download PDFInfo
- Publication number
- CN110814149B CN110814149B CN201911027925.4A CN201911027925A CN110814149B CN 110814149 B CN110814149 B CN 110814149B CN 201911027925 A CN201911027925 A CN 201911027925A CN 110814149 B CN110814149 B CN 110814149B
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- Prior art keywords
- blanking
- shell
- blank
- case
- connecting line
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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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
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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
- B21D22/20—Deep-drawing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention provides a machine shell thick material blanking process, which comprises a blanking part to be blanked and a machine shell part left after blanking, wherein a connecting line of the blanking part and the machine shell part is a trimming line, and the machine shell thick material blanking process comprises the following steps: stretch forming, punching R angle and blanking, the thickness of the blanking part is reduced through the stretch forming, the length of a connecting line of the shell part and the blanking part is reduced through punching the R angle at the edge of the shell part, and then the cutting force in the blanking process is reduced, so that the blanking sound is effectively reduced, the burrs of the shell after blanking are reduced, and the precision of the shell is improved.
Description
Technical Field
The invention relates to the technical field of part processing, in particular to a machine shell thick material blanking process.
Background
Blanking is a stamping process in which a die is used to separate a portion of a material or work piece from another portion of the material, work piece, or scrap. The blanking is a general name of the separation processes of cutting, blanking, punching, notching, chiseling, trimming, tongue cutting, trimming and the like. The proportion of blanking in the stamping production is the largest. During the blanking process, the sheet material itself does not undergo plastic deformation except for the metal near the shearing contour line, so that the part blanked from the flat plate is still in a planar shape.
In the prior art, generally, the blanking is directly performed on the thick material of the shell, the blanking clearance is large, so that the blanking sound is large, and meanwhile, the burrs of the shell after blanking are large and the precision is low. Therefore, a thick material blanking process capable of effectively reducing blanking sound, reducing shell burrs after blanking and improving shell precision is needed to be researched.
Disclosure of Invention
The invention aims to solve the problems that the blanking sound is large, the burrs of a blanked shell are large and the precision is low in the prior art that the shell thick material is directly blanked, and provides a shell thick material blanking process which can effectively reduce the blanking sound, reduce the burrs of the blanked shell and improve the shell precision.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a machine shell thick material blanking process, this machine shell thick material is including waiting the blanking part that punches out and the machine shell part that remains after the blanking, and the connecting wire of blanking part and machine shell part is the side cut line, and this machine shell thick material blanking process includes following step:
s1, stretch forming: placing the blanking part in a drawing die cavity, and drawing along the direction vertical to the trimming line so as to reduce the thickness of the blanking part and obtain a first shell blank;
s2, punching an R angle: punching an R angle at the edge of the shell part connected with the blanking part of the first shell blank to obtain a second shell blank, wherein the distance from the connecting line of the blanking part of the second shell blank and the shell part to the bottom surface of the shell part of the second shell blank is equal to the distance from the trimming line to the bottom surface of the shell part of the shell thick material;
s3, blanking: and punching along the connecting line of the punched part of the second shell blank and the shell part to separate the punched part from the shell part to obtain the shell.
Preferably, the minimum thickness of the blanked portion of the first case blank in step S1 is half the thickness of the blanked portion of the case blank.
Preferably, the length of the connecting line of the punched part of the second case blank and the case part obtained in step S2 is smaller than the length of the trimming line of the case thickness. Further, the length of the connecting line of the punched portion of the second case blank and the case portion in step S2 is half the length of the trimming line of the case thickness.
Preferably, the length of the connecting line of the punched part of the first case blank and the case part in step S1 is less than or equal to the length of the trimming line of the case thickness.
Preferably, the distance from the connection line of the first case blank and the case portion to the bottom surface of the case portion of the first case blank is equal to the distance from the trimming line to the bottom surface of the case portion of the case thickness in step S1.
Preferably, the blanking direction in step S3 is perpendicular to the stretching direction in step S1.
Preferably, a connecting line of the punched portion of the second case blank and the case portion in step S2 is tangent to one end of the R-angle of the second case blank.
Compared with the prior art, the invention has the beneficial effects that: the thickness of the blanking part is reduced through stretch forming, the length of a connecting line of the shell part and the blanking part is reduced through punching an R angle at the edge of the shell part, and then the cutting force in the blanking process is reduced, so that the blanking sound is effectively reduced, the burrs of the shell after blanking are reduced, and the precision of the shell is improved.
Drawings
FIG. 1 is a schematic structural diagram of a thick housing material in a thick housing material blanking process according to the present invention;
FIG. 2 is a schematic structural view after stretch forming in the blanking process of the present invention;
FIG. 3 is a schematic structural view of the blanking process after punching an R-shaped corner;
fig. 4 is a schematic structural view after blanking in the blanking process of the present invention.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a case thick material in a case thick material blanking process of the present invention, fig. 2 is a schematic structural diagram after stretch forming in the blanking process of the present invention, fig. 3 is a schematic structural diagram after punching an R-angle in the blanking process of the present invention, and fig. 4 is a schematic structural diagram after blanking in the blanking process of the present invention. The machine shell thick material 1 comprises a blanking portion 11 to be blanked and a machine shell portion 12 left after blanking, and a connecting line of the blanking portion 11 and the machine shell portion 12 is a trimming line 13; 2, obtaining a first machine shell blank after stretching forming, wherein the first machine shell blank comprises a stretching blanking part 21 and a stretching machine shell part 22; a second housing blank obtained after punching an R corner, the second housing blank including an R corner punched portion 31 and an R corner housing portion 32; and 4, a shell obtained after blanking.
The invention discloses a blanking process of a thick material of a shell, which comprises the following steps:
s1, stretch forming: placing the blanking portion 11 in a drawing die cavity and drawing in a direction perpendicular to the trimming line to reduce the thickness of the blanking portion 11, resulting in a first housing blank 2, the minimum thickness L1 of the drawing blanking portion 21 of the first housing blank 2 being smaller than the thickness L of the blanking portion 11 of the housing thick stock 1, preferably the minimum thickness L1 of the drawing blanking portion 21 of the first housing blank 2 being half the thickness L of the blanking portion 11 of the housing thick stock 1;
s2, punching an R angle: an R angle is punched at an edge of the drawing housing part 22 of the first housing blank 2 connected to the drawing blanking part 21, which is preferably the weakest point where the drawing blanking part 21 and the drawing housing part 22 are connected, that is, the distance from the drawing housing part 22 to the lower surface of the drawing blanking part 21 is the smallest, so as to reduce the difficulty in punching the R angle. Obtaining a second case blank 3 after punching an R corner, wherein the distance H2 from the connecting line of the R corner punching part 31 and the R corner casing part 32 of the second case blank 3 to the bottom surface of the R corner casing part 32 of the second case blank 3 is equal to the distance H from the trimming line 13 to the bottom surface of the case part 12 of the case thick stock 1, the length D2 from the connecting line of the R corner punching part 31 and the R corner casing part 32 of the second case blank 3 is less than the length D of the trimming line 13 of the case thick stock 1, and preferably, the length D2 from the connecting line of the R corner punching part 31 and the R corner casing part 32 of the second case blank 3 to the bottom surface of the case thick stock 1 is half of the length D of the trimming line 13 of the case thick stock 1;
s3, blanking: the R-corner punched portion 31 and the R-corner case portion 32 are separated by punching along a connecting line of the R-corner punched portion 31 and the R-corner case portion 32 of the second housing blank 3, and the housing 4 is obtained.
Preferably, in step S1, a length D1 of a connecting line of the stretch blanking portion 21 of the first case blank 2 and the stretch shell portion 22 is equal to or less than a length D of the trim line 13 of the case thickness 1, and a distance H1 of the connecting line of the stretch blanking portion 21 of the first case blank 2 and the stretch shell portion 22 to a bottom surface of the stretch shell portion 22 of the first case blank 2 is equal to a distance H of the trim line 13 to a bottom surface of the shell portion 12 of the case thickness 1.
Preferably, the blanking direction in step S3 is perpendicular to the stretching direction in step S1.
Preferably, a connecting line of the R-angle blanking portion 31 and the R-angle case portion 32 of the second case blank 3 in step S2 is tangent to one end of the R-angle of the second case blank 3 to make the connecting line of the R-angle blanking portion 31 and the R-angle case portion 32 of the second case blank 3 shortest, thereby reducing a cutting force during blanking, reducing a blanking sound, reducing a case burr after blanking, and improving a case accuracy.
According to the blanking process for the thick material of the shell, the thickness of the blanking part 11 is reduced through stretch forming, the length of a connecting line between the R-angle shell part 32 and the R-angle blanking part 31 is reduced through punching the R angle at the edge of the stretch shell part 22, and then the cutting force in the blanking process is reduced, so that the blanking sound is effectively reduced, the shell burrs after blanking are reduced, and the shell precision is improved.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.
Claims (7)
1. The utility model provides a machine shell thick material blanking technology, machine shell thick material is including waiting the blanking part that punches off and the machine shell part that leaves behind the blanking, the blanking part with the connecting wire of machine shell part is the side cut line, its characterized in that, the blanking technology of machine shell thick material includes following step:
s1, stretch forming: placing the blanking part in a drawing die cavity, and drawing the blanking part along the direction vertical to the trimming line to reduce the thickness of the blanking part to obtain a first case blank, wherein the distance from the blanking part of the first case blank and a connecting line of the case part to the bottom surface of the case part of the first case blank is equal to the distance from the trimming line to the bottom surface of the case part of the case thick material;
s2, punching an R angle: punching an R angle at the edge of the shell part connected with the blanking part of the first shell blank to obtain a second shell blank, wherein the distance from the connecting line of the blanking part of the second shell blank and the shell part to the bottom surface of the shell part of the second shell blank is equal to the distance from the trimming line to the bottom surface of the shell part of the shell thick material;
s3, blanking: and punching along the connecting line of the punched part of the second shell blank and the shell part to separate the punched part from the shell part to obtain the shell.
2. The machine shell blank blanking process of claim 1, wherein the minimum thickness of the blanked portion of the first machine shell blank in step S1 is half the thickness of the blanked portion of the machine shell blank.
3. The shell blank blanking process of claim 1, wherein the length of the connecting line of the blanking portion of the second shell blank and the shell portion in step S2 is smaller than the length of the trimming line of the shell blank.
4. A shell blank blanking process according to claim 3, wherein the length of the connecting line of the blanking portion of the second shell blank and the shell portion in step S2 is half the length of the trimming line of the shell blank.
5. The shell blank blanking process of claim 1, wherein the length of the connecting line of the blanking portion of the first shell blank and the shell portion in step S1 is less than or equal to the length of the trimming line of the shell blank.
6. The machine case slab blanking process of claim 1, wherein the blanking direction in step S3 is perpendicular to the drawing direction in step S1.
7. The case slab blanking process of claim 1, wherein a connecting line of the blanking portion and the case portion of the second case blank in step S2 is tangent to one end of the R-angle of the second case blank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911027925.4A CN110814149B (en) | 2019-10-28 | 2019-10-28 | Machine shell thick material blanking process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911027925.4A CN110814149B (en) | 2019-10-28 | 2019-10-28 | Machine shell thick material blanking process |
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| Publication Number | Publication Date |
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| CN110814149A CN110814149A (en) | 2020-02-21 |
| CN110814149B true CN110814149B (en) | 2020-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911027925.4A Active CN110814149B (en) | 2019-10-28 | 2019-10-28 | Machine shell thick material blanking process |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CS224368B1 (en) * | 1981-06-03 | 1984-01-16 | Tomasek Jiri | Flangeless shell drawing apparatus |
| JP2724229B2 (en) * | 1990-01-17 | 1998-03-09 | アスモ株式会社 | End cutting method for cylindrical drawn products |
| JP2898074B2 (en) * | 1990-09-27 | 1999-05-31 | エヌテイエヌ株式会社 | Manufacturing method of cylindrical parts |
| CN102029311A (en) * | 2010-10-21 | 2011-04-27 | 青岛海立达冲压件有限公司 | Processing technique for compressor shell |
| CN206567388U (en) * | 2017-02-09 | 2017-10-20 | 天津市鸿捷达模具开发有限公司 | Punching removes the mould of flash removed simultaneously |
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| CN110814149A (en) | 2020-02-21 |
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Effective date of registration: 20220816 Address after: No. 19, Hechang Road, Chengdong Town, Haian City, Nantong City, Jiangsu Province, 226600 Patentee after: Jiangsu Jierli Technology Co., Ltd. Address before: 215000 building D10, Youxin Industrial Park, No. 2, tianedang Road, Yuexi Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee before: SUZHOU JIEERLI INDUSTRIAL Co.,Ltd. |
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