CN112453208B - Novel multi-station progressive die of oil sprayer seat and stamping method - Google Patents
Novel multi-station progressive die of oil sprayer seat and stamping method Download PDFInfo
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- CN112453208B CN112453208B CN202011143785.XA CN202011143785A CN112453208B CN 112453208 B CN112453208 B CN 112453208B CN 202011143785 A CN202011143785 A CN 202011143785A CN 112453208 B CN112453208 B CN 112453208B
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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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/08—Dies with different parts for several steps in a process
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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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
Abstract
The invention provides a multi-station progressive die of a novel oil sprayer seat, which comprises an upper die and a lower die. The upper die and the lower die are connected through a plurality of outer guide pillars and inner guide pillars and are divided into a blanking die, a main body forming combined die set, a boss forming combined die set and an edge cutting die; the main body forming combined die set comprises a pre-stretching combined die set and a final stretching die, and the boss forming combined die set comprises a boss stretching combined die set, a boss extrusion hole combined die set and a boss shaping combined die set; the invention also comprises a stamping method, the forming of the boss is completed by using the fractional prestretching, the transition parameters of the root part of the boss are met, and the requirement of the roughness of the inner hole of the oil sprayer seat is met by using the multiple hole extruding and shaping procedures. The invention ensures the quality of parts, greatly improves the stability of the die and creates extremely considerable economic and social benefits.
Description
Technical Field
The invention relates to the technical field of stamping, in particular to a multi-station progressive die and a stamping method of a novel oil injector seat.
Background
A high-pressure oil rail of 350Bar is used in a newly developed high-pressure project of a company, an oil injector seat matched with the high-pressure oil rail is made of 2mm materials, and the manufacturing difficulty of the oil injector is as follows:
1. and a boss with the outer diameter of phi 6.5 (0/-0.1) mm and the height of 5mm needs to be stretched at the bottom of the stretched part, the boss at least ensures a 3mm straight-line segment, and the root of the boss needs R0.3mm transition.
2. The diameter of the inner hole is required to be phi 9.4 +/-0.03 mm, and the stretching height is 16.6mm.
3. The axial roughness of the inner hole is required to be Rzmax6.3, namely, the mirror effect is basically achieved and the inner wall is not allowed to have wiredrawing.
4. The thinnest wall thickness is 1.4mm.
According to the size requirements of the products, if the existing mature process and die are adopted for production and manufacturing, the quality of parts is difficult to ensure, the production process is extremely unstable and the cost is very high.
Disclosure of Invention
The invention aims to provide a novel multi-station progressive die of an oil injector seat, which mainly solves the problems in the prior art, and resets and optimizes the stretching process parameters and the die structure to ensure the product quality.
In order to achieve the purpose, the technical scheme adopted by the invention is to provide the multi-station progressive die of the novel oil sprayer seat, which is characterized by comprising an upper die and a lower die which are connected through a plurality of outer guide posts; the upper die and the lower die are divided into a blanking die, a main body forming combined die set, a boss forming combined die set and an edge cutting die; the upper die is locked on an upper working table surface of the press machine, the lower die is locked on a lower working table surface of the press machine, when the press machine reciprocates up and down, the upper die moves along with the upper working table surface, and the lower die moves along with the lower working table surface;
the main body forming combined die set comprises a pre-stretching combined die set and a final stretching die;
the boss forming combined die set comprises a boss stretching combined die set, a boss extrusion hole combined die set and a boss shaping combined die set; the boss stretching combined die set comprises a boss first stretching die, a boss second stretching die, a boss third stretching and shaping die and a flattening die; the diameter of the male die of the third boss stretching and shaping die is larger than that of the male die of the first boss stretching die and that of the male die of the second boss stretching die.
Further, the boss hole extrusion combination die set comprises a first hole extrusion die, a second hole extrusion die and a shaping die.
Further, the combined boss reshaping die set is characterized by comprising a punching die and a convex point pressing die.
Further, the combined die set for main body forming is characterized in that the combined die set for pre-stretching comprises a stretching die, a second stretching die, a third stretching die and a fourth stretching die; the final drawing die is a five-drawing die; the stripper plate is attached to the one drawing die by stripper guide posts.
Further, the blanking die, the trimming die, and each die of the main body molding combined die set and the boss molding combined die set are provided with inner guide pillars.
Furthermore, the blanking die, the trimming die and each die in the main body forming combined die set and the boss forming combined die set adopt stepped structures.
The blanking die, the trimming die, the main body forming combined die set and each die in the boss forming combined die set are respectively mounted on a plurality of groups of sub die frames; and combining a plurality of groups of the submodules into a complete continuous die.
The three-dimensional drawing die is characterized in that the number of the sub die frames is four, wherein the first sub die frame comprises the blanking die, the second sub die frame comprises the pre-stretching combined die set, the third sub die frame comprises the final stretching die and the boss forming combined die set, and the fourth sub die frame comprises the trimming die.
The invention also provides a method for stamping the oil injector seat by the multi-station progressive die of the novel oil injector seat, which is characterized by comprising the following steps of:
s101, finishing blanking by using the blanking die;
s102, sequentially using the pre-stretching combined die sets to pre-stretch the raw materials for multiple times to obtain a cylindrical pre-stretched piece;
s103, discharging by using a manipulator, and after annealing the cylindrical pre-stretching piece, feeding by using a vibrating disc;
step S104, finishing the processing of the cylindrical piece by using the final drawing die;
step S105, performing pre-stretching twice on the bottom of the cylindrical part by using the boss first stretching die and the boss second stretching die to form a boss pre-stretching part;
step S106, finishing the final drawing of the boss and the external shaping of the boss at one time by using the boss three-drawing and shaping die;
step S107, using the flattening die to finish the processing of the external shape of the boss
Step S108, sequentially using a boss hole extruding combined die set to extrude a cavity in the oil injector seat;
step S109, sequentially using the boss shaping combined die set to complete bottom hole punching and convex point pressing of the oil injector seat;
and S110, obtaining a finished product of the oil injector seat by using the trimming die.
The invention also provides a method for stamping the oil injector seat by using the multi-station progressive die of the novel oil injector seat, which is characterized by comprising the following steps of:
step S201, finishing blanking by using the blanking die;
s202, sequentially using the pre-stretching combined die set to pre-stretch the raw material for multiple times to obtain a cylindrical pre-stretched piece;
step S203, using a manipulator to perform blanking, and using a vibration disc to perform feeding after the cylindrical pre-stretching piece is annealed;
step S204, finishing the processing of the cylindrical piece by using the final drawing die;
step S205, performing pre-stretching twice on the bottom of the cylindrical piece by using the boss first stretching die and the boss second stretching die to form a boss pre-stretching piece;
step S206, finishing the final drawing of the boss and the external shaping of the boss at one time by using the boss three-drawing and shaping die;
and step S207, finishing the processing of the external shape of the boss by using the flattening die.
S208, extruding the roughness of the inner cavity of the oil injector seat into the range of R1 by using the first hole extruding die;
s209, extruding the roughness of the inner cavity of the oil sprayer seat into a range of R2 by using the second extruding hole and the shaping die;
step S210, sequentially using a boss shaping combined die set to complete punching of a bottom hole of the boss and pressing of a convex point;
and S211, obtaining a finished product of the oil sprayer seat by using the trimming die.
In view of the above technical features, the present invention has the following advantages:
1. the multi-station progressive die of the novel oil sprayer seat ensures the quality of parts, greatly improves the stability of the die and creates extremely considerable economic and social benefits.
Drawings
FIG. 1 is a schematic structural view of a preferred embodiment of a multi-station progressive die of the present invention;
FIG. 2 is another schematic structural view of a preferred embodiment of the multi-station progressive die of the present invention;
FIG. 3 is a front view of a product corresponding to the multi-station progressive die of the present invention;
FIG. 4 is a top view of a product corresponding to the multi-station progressive die of the present invention;
fig. 5 is a flow chart of a stamping method of a multi-station progressive die according to a preferred embodiment of the invention.
In the figure: 1-upper die, 2-lower die, 3-outer guide post, 4-inner guide post, 5-stripper guide post, 6-bottom hole, 7-boss, 8-bump, 9-cylinder, 10-stripper;
100-blanking die, 200-main body forming combined die set, 300-boss forming combined die set and 400-trimming die;
201-a drawing die, 202-a drawing die, 203-a three drawing die, 204-a four drawing die, 211-a five drawing die;
301-boss one-drawing die, 302-boss two-drawing die, 303-boss three-drawing and shaping die, 304-flattening die, 311-first hole extrusion die, 312-second hole extrusion and shaping die; 321-punching die and 322-embossing point die.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Referring to fig. 3 and 4, the material thickness of the product injector seat corresponding to the embodiment is 2mm. The cylinder 9 is required to be stretched first, the diameter of the inner hole of the cylinder is required to be phi 9.4 +/-0.03 mm, and the stretching height is 16.6mm. Wherein, the axial roughness of the inner hole is required to be Rzmax6.3, the mirror effect is basically achieved, the inner wall is not allowed to be drawn, and the thinnest wall of the cylinder 9 is 1.4mm after the drawing is finished. At the bottom of the stretched cylinder 9, a boss 7 with the outer diameter of phi 6.5 (0/-0.1) mm and the height of 5mm needs to be stretched, and the boss 7 at least needs to ensure a straight line section of 3mm, and simultaneously the root of the boss 7 needs R0.3mm transition. On the bottom surface of the cylinder 9, 3 bumps 8 are also arranged equidistantly along the circular ring direction. On the boss 7, a bottom hole 6 is arranged.
Examples
Referring to fig. 1 and 2, a preferred embodiment of the present invention includes an upper mold 1 and a lower mold 2 connected by a plurality of outer guide pillars; the upper die 1 and the lower die 2 are divided into a blanking die 100, a main body forming combined die set 200, a boss forming combined die set 300 and a trimming die 400. The upper die 1 is locked on the upper working table of the press machine, and the lower die 2 is locked on the lower working table of the press machine. When the press machine reciprocates up and down, the upper die 1 moves along with the upper working table surface, and the lower die 2 moves along with the lower working table surface.
The main body molding die set 200 includes a pre-stretching die set and a final-stretching die set. The pre-stretching combined die set consists of a first stretching die 201, a second stretching die 202, a third stretching die 203 and a fourth stretching die 204; the final drawing die is a five-draw die 211. On a drawing die 201, a stripper plate 10 is also mounted. The stripper plate 10 is attached to a drawing die 201 by means of stripper guide posts 5.
The boss molding combined die set 300 includes a boss stretching combined die set, a boss extrusion hole combined die set and a boss shaping combined die set. The boss stretching combined die set comprises a boss first stretching die 301, a boss second stretching die 302, a boss third stretching and shaping die 303 and a flattening die 304. The diameter of the male die of the third boss drawing and shaping die 303 is larger than the diameter of the male die of the first boss drawing die 301 and the diameter of the male die of the second boss drawing die 302. The boss orifice combining die set includes a first orifice die 311 and a second orifice and shaping die 312. The boss shaping combined die set is composed of a punching die 321 and a convex point pressing die 322.
All the dies in this embodiment include a blanking die 100, a drawing die 201, a drawing die 202, a drawing die 203, a drawing die 204, a drawing die 211, a drawing die 301, a drawing die 302, a drawing and shaping die 303, and a flattening die 304, wherein the first hole-extruding die 311, the second hole-extruding and shaping die 312, the punching die 321, the convex point-extruding die 322, and the trimming die 400 are provided with two sets of inner guide pillars to form dual guiding by matching with four outer guide pillars. Under the structure of double guide, the precision of the die is further improved.
Because the corresponding product injector seat inner hole diameter is smaller and the tolerance requirement is higher, all the dies in the embodiment include a blanking die 100, a drawing die 201, a drawing die 202, a drawing die 203, a drawing die 204, a drawing die 211, a drawing die 301, a drawing die 302, a drawing and shaping die 303 and a flattening die 304, and the first hole extruding die 311, the second hole extruding and shaping die 312, the punching die 321, the convex point pressing die 322 and the trimming die 400 all adopt a step structure for ensuring the strength of the male die part, improving the impact resistance and effectively prolonging the service life of the male die.
The multi-station progressive die is formed by combining four sets of sub die frames, so that the precision is more reliable, the times of die removal during die maintenance in the production process can be reduced, and the service life of the die is prolonged by at least 5 times of the original service life. The four-group die carrier is divided into: the first sub-die frame comprises a blanking die 100, the second sub-die frame comprises a drawing die 201, a second drawing die 202, a third drawing die 203 and a fourth drawing die 204, the third sub-die frame comprises a five drawing die 211, a boss one drawing die 301, a boss two drawing die 302, a boss three drawing and shaping die 303, a flattening die 304, a first hole extruding die 311, a second hole extruding and shaping die 312, a punching die 321 and a convex point pressing die 322, and the fourth sub-die frame comprises the trimming die 400.
Referring to fig. 5, the present embodiment further includes a method for stamping an injector seat using a multi-station progressive die of a novel injector seat, which is characterized by comprising the steps of:
and S301, finishing blanking by using a blanking die to obtain a raw material with the thickness of 2mm and ready for processing the oil sprayer seat.
And S302, pre-stretching the raw materials for multiple times by sequentially using pre-stretching combined die sets to obtain a cylindrical pre-stretched piece.
The method comprises the steps of sequentially using a first stretching die, a second stretching die, a third stretching die and a fourth stretching die to pre-stretch raw materials into cylindrical pre-stretching pieces in multiple times.
And S303, discharging by using a manipulator, and feeding by using a vibrating disk after annealing the cylindrical pre-stretching piece.
And step S304, finishing the processing of the cylindrical piece by using a five-drawing die.
Step S305, performing pre-stretching twice on the bottom of the cylindrical part by using a boss first stretching die and a boss second stretching die, and punching out the basic shape of a boss to form a boss pre-stretching part;
and S306, finishing the final drawing of the boss and the external shaping of the boss at one time by using a boss three-drawing and shaping die. Through the diameter of the terrace die of the three tensile and plastic moulds of increase boss, can reduce tensile clearance, reduce die oral area R angle simultaneously, ensure that the boss root satisfies R0.3mm's transition.
And S307, finishing the processing of the external shape of the boss by using a flattening die, and ensuring that the boss has the outer diameter phi of 6.5 (0/-0.1) mm and the height of 5mm and has at least 3mm straight-line segments.
And S308, extruding the roughness of the inner cavity of the oil injector seat between Rz6 and Rz7 by using a first hole extruding die.
And S309, extruding the roughness of the inner cavity of the oil injector seat into Rzmax6.3 by using the second extruding hole and the shaping die, wherein the diameter of the inner hole reaches phi 9.4 +/-0.03 mm, and the stretching height is 16.6mm.
Step S310, sequentially using a boss shaping combined die set to complete punching of a bottom hole of a boss and pressing of a convex point;
and step S311, obtaining a finished product of the injector seat by using the trimming die.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A multi-station progressive die of a novel oil injector seat is characterized in that,
the oil injector seat needs to stretch a cylinder firstly, a boss needs to be stretched at the bottom of the stretched cylinder, the root of the boss requires R transition, 3 salient points are arranged on the bottom surface of the cylinder at equal intervals along the circular ring direction, and a bottom hole is arranged on the boss; the material thickness of the oil injector seat is 2mm, the diameter of the inner hole of the cylinder is required to be phi 9.4 +/-0.03 mm, the stretching height is 16.6mm, and the thinnest wall thickness of the cylinder is 1.4mm; the outer diameter phi of the boss is 6.4-6.5mm, the height of the boss is 5mm, at least 3mm straight-line segments of the boss are ensured, and R0.3mm transition is required at the root of the boss;
the multi-station progressive die comprises an upper die and a lower die which are connected through a plurality of outer guide pillars; the upper die and the lower die are divided into a blanking die, a main body forming combined die set, a boss forming combined die set and an edge cutting die; the upper die is locked on an upper working table surface of the press machine, the lower die is locked on a lower working table surface of the press machine, when the press machine reciprocates up and down, the upper die moves along with the upper working table surface, and the lower die moves along with the lower working table surface;
the main body forming combined die set comprises a pre-stretching combined die set and a final stretching die;
the boss forming combined die set comprises a boss stretching combined die set, a boss extrusion hole combined die set and a boss shaping combined die set; the boss stretching combined die set comprises a boss first stretching die, a boss second stretching die, a boss third stretching and shaping die and a flattening die; the diameter of the male die of the boss three-drawing and shaping die is larger than that of the male die of the boss one-drawing die and that of the male die of the boss two-drawing die;
blanking mould, main part shaping assembling die set, boss shaping assembling die set and side cut mould all are provided with two sets of interior guide pillars, and the outer guide pillar of mould and lower mould forms dual direction in the cooperation.
2. The novel multi-station progressive die of an injector seat as claimed in claim 1, wherein the boss hole extrusion combination die set comprises a first hole extrusion die, a second hole extrusion die and a shaping die.
3. The novel multi-station progressive die of the injector seat as claimed in claim 1, wherein the boss shaping combined die set comprises a punching die and a bump pressing die.
4. The novel multi-station progressive die of the injector seat as claimed in claim 1, wherein the combined die set for main body molding comprises a first drawing die, a second drawing die, a third drawing die and a fourth drawing die; the final drawing die is a five-drawing die; the stripper plate is attached to the one drawing die by stripper guide posts.
5. The novel multi-station progressive die of an injector seat as claimed in claim 1, wherein the blanking die, the trimming die, and each die of the main body forming combined die set and the boss forming combined die set are provided with an inner guide post.
6. The novel multi-station progressive die of the injector seat as claimed in claim 1, wherein the blanking die, the trimming die, and each die of the main body forming combined die set and the boss forming combined die set are of a stepped structure.
7. The multi-station progressive die of the novel oil sprayer seat as claimed in claim 1, wherein the blanking die, the trimming die, and the dies of the main body forming combined die set and the boss forming combined die set are respectively mounted on a plurality of sets of sub die frames; and combining a plurality of groups of the submodules into a complete continuous die.
8. The novel multi-station progressive die of an injector seat as claimed in claim 7, wherein the sub die frames are four groups, wherein a first sub die frame comprises the blanking die, a second sub die frame comprises the pre-stretching combined die set, a third sub die frame comprises the final stretching die and the boss forming combined die set, and a fourth sub die frame comprises the trimming die.
9. A method for stamping an injector seat by using a multi-station progressive die of the novel injector seat as claimed in claim 1, which is characterized by comprising the following steps:
s101, finishing blanking by using the blanking die;
step S102, sequentially using the pre-stretching combined die set to pre-stretch the raw material for multiple times to obtain a cylindrical pre-stretching piece;
s103, discharging by using a manipulator, and after annealing the cylindrical pre-stretching piece, feeding by using a vibrating disc;
step S104, finishing the processing of the cylindrical piece by using the final drawing die;
step S105, performing pre-stretching twice on the bottom of the cylindrical part by using the boss first stretching die and the boss second stretching die to form a boss pre-stretching part;
step S106, finishing the final drawing of the boss and the external shaping of the boss at one time by using the boss three-drawing and shaping die;
step S107, processing the external shape of the boss by using the flattening die;
step S108, sequentially using a boss hole extruding combined die set to extrude a cavity in the oil injector seat;
step S109, sequentially using boss shaping combined die sets to complete bottom hole punching and bump pressing of the oil injector seat;
and S110, obtaining a finished product of the oil injector seat by using the trimming die.
10. A method for stamping an injector seat by using a multi-station progressive die of the novel injector seat as claimed in claim 2, characterized by comprising the steps of:
step S201, finishing blanking by using the blanking die;
s202, sequentially using the pre-stretching combined die set to pre-stretch the raw material for multiple times to obtain a cylindrical pre-stretched piece;
step S203, using a manipulator to perform blanking, and using a vibration disc to perform feeding after the cylindrical pre-stretching piece is annealed;
step S204, finishing the processing of the cylindrical piece by using the final drawing die;
step S205, performing pre-stretching twice on the bottom of the cylindrical piece by using the boss first stretching die and the boss second stretching die to form a boss pre-stretching piece;
step S206, finishing the final drawing of the boss and the external shaping of the boss at one time by using the boss three-drawing and shaping die;
step S207, finishing the processing of the external shape of the boss by using the flattening die;
s208, extruding the roughness of the inner cavity of the oil injector seat into the range of R1 by using the first hole extruding die;
s209, extruding the roughness of the inner cavity of the oil sprayer seat into a range of R2 by using the second extruding hole and the shaping die;
step S210, sequentially using a boss shaping combined die set to complete punching of a bottom hole of the boss and pressing of a convex point;
and S211, obtaining a finished product of the oil injector seat by using the trimming die.
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| CN112453208A (en) | 2021-03-09 |
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