CN106181233B - A kind of precise forming process of the large scale flat part of single side complexity - Google Patents
A kind of precise forming process of the large scale flat part of single side complexity Download PDFInfo
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- CN106181233B CN106181233B CN201610535134.2A CN201610535134A CN106181233B CN 106181233 B CN106181233 B CN 106181233B CN 201610535134 A CN201610535134 A CN 201610535134A CN 106181233 B CN106181233 B CN 106181233B
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- forging
- large scale
- single side
- die
- flat part
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Classifications
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
Abstract
The present invention is a kind of precise forming process of the large scale flat part of single side complexity, and the technique includes the following steps: blanking, heating, jumping-up, punching, reaming, Divisional die-forging forming, shaping, trimming, heat treatment, machining.Divisional die-forging forming is that the flat forging of large scale of single side complexity is divided into multiple portions according to certain angle, successively carries out die-forging forming to each section.The shaping is to carry out shaping to the forging after Divisional die-forging forming using unitary mould, improves the total quality of forging.Not only material deformation resistance is small by the present invention, easy forming, but also can use the existing small tonnage plants molding large part of enterprise；The die forging of large scale flat part suitable for one-side band complicated shape is produced in batches, and the mass production of the brake discs forging such as high-speed rail, urban rail is particularly suitable for.
Description
Technical field
The invention belongs to forging and molding technical method field, the large scale for particularly relating to a kind of single side complexity is flat
The precise forming process of part.
Background technique
Large scale flat part is mostly great transport, mechanical, manufacturing equipment key part.Common manufacturing method is
Using large-tonnage equipment free forging, the dimensional accuracy of product is difficult to ensure, it is necessary to could be obtained by subsequent machining
To the product of high quality.However, class part flat for the large scale of feature with complex shape, such as high-speed rail brake disc, such as
Blank forged piece is produced using open die forging method, then is machined, machining is time-consuming more, while also resulting in forging stream
The cutting of line reduces the mechanical property and physical property of product.
The brake disc room temperature and high-temperature mechanical property of forging and molding are good, good toughness, and heat crack resistance is high, wearability and heat-resisting
Fatigue behaviour is also all fine.Forging Steel Brake Disc and the friction pair of powder metallurgy brake pad pairing are that current countries in the world bullet train is general
All over the braking model used.But since its quality requirement is high, manufacture difficulty is larger.Currently, steel needed for China's EMU
Matter forges the import of brake disc almost all, constrains the development of China's high-speed rail industry.
The forging and molding difficult point major embodiment of brake disc is both ways.First is that there are many radiating ribs on disk body, it is being forged into
It is filled when shape difficult.Second is that required equipment tonnage is more demanding since disk size is larger.Meanwhile in order to guarantee radiating ribs
Filling is complete, and the demand to forging force can also further increase.Filling difficulty and required can be reduced using forming temperature is improved
Equipment tonnage, but the tissue of brake disc forging and performance can reduce.
The forging equipment friction press tonnage of domestic enterprise most of at present is no more than 100000KN, it is difficult to guarantee
The die-forging forming of the large scale flat part of single side complexity.For this purpose, how under the conditions of existing equipment, design one reasonably at
The quality and precision of the shape technology ensuring forging just become the technical problem needed to be solved.
Summary of the invention
The present invention is directed to the large scale flat part with complex characteristic and shapes problem, proposes a kind of complicated big of single side
The precise forming process of gauge flat part, high, complex characteristic which solve such part forming device requirements fill imperfect
With the problems such as unstable product quality, the precision form of the large scale flat part of single side complexity is realized.
In order to achieve the above object, the present invention is achieved by the following technical solutions:
The present invention is a kind of precise forming process of the large scale flat part of single side complexity, and the technique includes following step
It is rapid:
(1) blanking: according to the model of processed product, blank needed for being obtained by shearing or sawing；
(2) it heats: to above-mentioned blank heating to 1180 ± 20 DEG C；
(3) blank after heating jumping-up: is upset as by patty using press machine；
(4) patty blank punching: is gone out into centre bore with formed punch on press machine；
(5) the patty blank with centre bore reaming: is expanded into the circular material blank of required size on staving press；
(6) the large scale flat part of single side complexity Divisional die-forging forming: is divided into multiple portions according to certain angle
Point, mold is designed according to above-mentioned division, by circular material blank reheating to 1100 ± 20 DEG C, is placed on designed mold,
Die-forging forming successively is carried out to each section, is overlapped between each adjacent part；
(7) shaping: shaping is carried out to the forging after Divisional die-forging forming using unitary mould, improves the entirety of forging
Quality；
(8) annular forging piece flash of inner hole and outer circle cutting burrs trimming: are obtained into the big ruler of single side complexity on press machine
Very little flat forging；
(9) it is heat-treated: the flat forging of large scale of single side complexity being heat-treated using the technique of quenching, tempering；
(10) it is machined: using numerically controlled processing equipment by the flat forging process of large scale of the single side complexity after heat treatment
To required size.
Preferred: step (2) is heated to be induction heating.
Preferred: step (6) the circular material blank heating uses induction heating.
Preferred: step (7) shaping is independently carried out in another equipment or is installed additional on dividing die-forging forming mold
Backing plate carries out.
A further improvement of the present invention is that: the process of step (6) the Divisional die-forging forming is as follows: by circular material blank
It is placed in complete lower die, the shape phase of the lower die and the large scale flat part hot forging complex characteristic face of single side complexity
Together, the large scale flat part of single side complexity is divided into multiple portions according to certain angle, upper mold is according to each section part
Without the planar design of complex characteristic, the upper mold downlink, to the large scale of single side complexity under the synergy of the lower die
Flat part first part die-forging forming；The upper mold uplink, the lower die rotate respective angles, allow the large scale of single side complexity
The second part of flat part is located at immediately below the upper mold, the upper mold downlink, combines with the lower die and completes single side complexity
Large scale flat part second part die-forging forming, repeat the above process until all strokes of single side complexity large scale flat part
Branch point all die forgings are completed.
A further improvement of the present invention is that: the large scale that the single side complexity of completion is suppressed described in step (6) is flat
One piece of shaping flat bolster, upper mold downlink are put on forging, backing plate carries out micro-deformation to forging under the pressure of the upper mold, completes
Step (7) shaping.
The beneficial effects of the present invention are:
(1) it is shaped using Divisional, needed forming force is enough at complex characteristic, and forming accuracy is high；
(2) Divisional die-forging forming, required Die Forging is more much lower than monoblock type die forging, and equipment tonnage demand reduces, and adapts to
The production of more multiple enterprises；
(3) Divisional die-forging forming, without increasing special equipment needed for pendulum is rolled over, avoids current state compared with rotary roll
The problems such as producing shortage and the low pendulum rolling die life of large-scale rotary forging press；
(4) Training system is simple, easy to operate, is not required to additional mold and equipment；
(5) manufacturing process is simple, and equipment energy consumption is low, reduces production cost；
(6) it is suitable for the production of one-side band complicated shape, the flat forging of large scale that another side is plane.
Present invention process is simple, reasonable, easy to operate, reduces production cost, improves production efficiency.
Detailed description of the invention
Fig. 1 is brake disc design of part schematic diagram of the present invention.
Fig. 2 is the structural schematic diagram of brake disc forging of the present invention.
Fig. 3 is that Divisional die forging Divisional divides schematic diagram in step of the present invention (6)；
Fig. 4 is step of the present invention (6) Divisional stamp forging mould schematic diagram.
Fig. 5 is step of the present invention (6) Divisional die forging deformation schematic diagram.
Fig. 6 is step of the present invention (7) shaping mould schematic diagram.
Specific embodiment
In order to deepen the understanding of the present invention, the present invention is done below in conjunction with drawings and examples and is further retouched in detail
It states, the embodiment is only for explaining the present invention, does not constitute and limits to protection scope of the present invention.
As shown in figures 1 to 6, the present invention is a kind of precise forming process of the large scale flat part of single side complexity, the work
Skill includes the following steps:
(1) blanking: according to the model of processed product, blank needed for being obtained by shearing or sawing；
(2) it heats: to above-mentioned blank induction heating, being heated to 1180 ± 20 DEG C；
(3) blank after heating jumping-up: is upset as by patty using press machine；
(4) patty blank punching: is gone out into centre bore with formed punch on press machine；
(5) the patty blank with centre bore reaming: is expanded into the circular material blank of required size on staving press；
(6) the large scale flat part of single side complexity Divisional die-forging forming: is divided into multiple portions according to certain angle
Point, mold is designed according to above-mentioned division, by circular material blank reheating to 1100 ± 20 DEG C, is placed on designed mold,
Die-forging forming successively is carried out to each section, is overlapped between each adjacent part；
(7) shaping: shaping is carried out to the forging after Divisional die-forging forming using unitary mould, improves the entirety of forging
Quality, step (7) shaping independently carry out in another equipment or install additional on dividing die-forging forming mold backing plate progress；
(8) annular forging piece flash of inner hole and outer circle cutting burrs trimming: are obtained into the big ruler of single side complexity on press machine
Very little flat forging；
(9) it is heat-treated: the flat forging of large scale of single side complexity being heat-treated using the technique of quenching, tempering；
(10) it is machined: using numerically controlled processing equipment by the flat forging process of large scale of the single side complexity after heat treatment
To required size.
The process of step (6) the Divisional die-forging forming is as follows: circular material blank is placed in complete lower die, it is described
Lower die is identical as the shape in large scale flat part hot forging complex characteristic face of single side complexity, and the large scale of single side complexity is flat
Stratosphere part is divided into multiple portions according to certain angle, upper mold according to each section part without the planar design of complex characteristic,
The upper mold downlink, under the synergy of the lower die to large scale flat part first part's die forging of single side complexity at
Shape；The upper mold uplink, the lower die rotate respective angles, the second part of the large scale flat part of single side complexity are allowed to be located at
Immediately below the upper mold, the upper mold downlink combines large scale flat part second for completing single side complexity with the lower die
Divide die-forging forming, repeats the above process until all divisions part all die forgings of single side complexity large scale flat part are completed, in step
Suddenly it is suppressed described in (6) and puts one piece of shaping flat bolster, upper mold downlink, backing plate on the flat forging of large scale of the single side complexity of completion
Micro-deformation is carried out to forging under the pressure of the upper mold, completes step (7) shaping；In step (6) Divisional die-forging forming
When, if equipment insufficient pressure or forging precision are poor, division numbers can be increased.So that complex characteristic filling is complete overall
Upper mold drafts can also be divided into multiple progress.But it should be carried out within the forging range of material.
Embodiment one
A kind of typical single side complexity large scale flat part --- brake disc of high-speed train part of the invention, thereon table
Face has a large amount of equally distributed radiating ribs, and lower surface is a flat surface, in Integral die-forged forming, since equipment power can be limited,
It is most difficult to be full of at radiating ribs, affects product quality, in order to solve the technical problem, use Divisional die forging of the present invention
Forming+shaping methods, detailed process is as follows:
1. part drawing according to figure 1 carries out the design of forging drawing, it is as shown in Figure 2 to design resulting forging drawing；
2. it is highly the round steel blank of 440mm that obtaining diameter by sawing machine blanking, which is 200mm, according to forging drawing；
3. being heated to 1180 DEG C using the round bar that induction heater obtains blanking；
4. the blank after heating to be upset as to the patty of 100mm high with Single arm, patty blank is gone out with formed punch
Diameter is the centre bore of 100mm；
5. patty blank with holes to be expanded into the circular material blank of required size on staving press, internal diameter is slightly larger
In the internal diameter of forging, outer diameter is slightly smaller than the outer diameter of forging；
6. circular material blank is carried out reheating using induction heater, heating temperature is 1100 DEG C；
7. brake disc is divided into 5 Divisional shaped portions, each section is the 1/4 of entire brake disc, adjacent two
/ there is 18 ° of metal overlapping, as shown in figure 3, overlapping part is as depressed at hatching position twice；
8. Divisional die-forging forming mould therefor is as shown in figure 4, circular material blank 3 is placed in complete lower die 2, lower die
2 is identical as the shape in brake disc hot forging radiating ribs face, and plane of the upper mold 1 according to each section brake disc without radiating ribs is set
Meter.1 downlink of upper mold, to brake disc part 1 die-forging forming under the synergy of lower die 2；For the part for avoiding circular material blank 3
It is pressurized and the part not being pressurized is caused to tilt, its tilting amount, deforming simulation result such as Fig. 5 institute of first part are limited using pressing plate 4
Show, intermediate radiator muscle fills satisfactory, both sides a bit deficient in, can obtain good result after subsequent position die-forging forming；
9. 1 uplink of upper mold, lower die 2 drives forging to rotate 72 °, and the part 2 of brake disc is allowed to be located at immediately below upper mold 1, on
1 downlink of mould combines with lower die 2 and completes brake disc part 2 die-forging forming.Repeat the above process until brake disc divided 5
Part all die forgings are completed, its edge can fill completely when to guarantee each position die-forging forming, are had between each adjacent part entire
1/20 overlapping of brake disc, can be to die forging again in place of the underfill of front in post forming if Fig. 3 beats hatching position
Pressure；
10. after Divisional die-forging forming, one piece of flat bolster 5 is put on the brake disc forging that compacting is completed, such as Fig. 6 institute
Show, 1 downlink of upper mold, backing plate 5 carries out micro-deformation to forging under the pressure of upper mold 1, completes shaping；
11. forging is ejected with backing-out punch, by annular forging piece flash of inner hole and outer circle cutting burrs on mechanical press；
12. the brake disc forging after pair trimming carries out quality inspection, qualified forging is carried out using the technique of quenching, tempering
Heat treatment, is machined to required size for the brake disc after heat treatment using numerically controlled processing equipment.
The present invention solves that the large scale flat part forming difficulty of one-side band complicated shape feature, precision be low, equipment needs
Seek high problem.Present invention process includes blanking, heating, jumping-up, punching, reaming, Divisional die-forging forming, shaping, trimming, heat
Processing, machining.The Divisional die-forging forming is to draw the flat forging of large scale of single side complexity according to certain angle
It is divided into multiple portions, die-forging forming successively is carried out to each section.The shaping is using unitary mould to Divisional die forging
Forging after forming carries out shaping, improves the total quality of forging.Not only material deformation resistance is small by the present invention, easy forming, and
And it can use the existing small tonnage plants molding large part of enterprise；Large scale flat part suitable for one-side band complicated shape
Die forging batch production, be particularly suitable for the mass production of the brake discs forging such as high-speed rail, urban rail.
Claims (5)
1. a kind of precise forming process of the large scale flat part of single side complexity, it is characterised in that: the technique includes as follows
Step:
(1) blanking: according to the model of processed product, blank needed for being obtained by shearing or sawing；
(2) it heats: to above-mentioned blank heating to 1180 ± 20 DEG C；
(3) blank after heating jumping-up: is upset as by patty using press machine；
(4) patty blank punching: is gone out into centre bore with formed punch on press machine；
(5) the patty blank with centre bore reaming: is expanded into the circular material blank of required size, internal diameter ruler on staving press
The very little internal diameter greater than forging, outer diameter are less than the outer diameter of forging；
(6) the large scale flat part of single side complexity Divisional die-forging forming: is divided into multiple portions, root according to certain angle
Mold is designed according to above-mentioned division, by circular material blank reheating to 1100 ± 20 DEG C, is placed on designed mold, it is successively right
Each section carries out die-forging forming, overlaps between each adjacent part；
(7) shaping: shaping is carried out to the forging after Divisional die-forging forming using unitary mould, improves the whole matter of forging
Amount；
(8) trimming: the large scale that annular forging piece flash of inner hole and outer circle cutting burrs are obtained single side complexity on press machine is flat
Flat forging；
(9) it is heat-treated: the flat forging of large scale of single side complexity being heat-treated using the technique of quenching, tempering；
(10) it is machined: the flat forging of large scale of the single side complexity after heat treatment is machined to by institute using numerically controlled processing equipment
Need size；
The process of Divisional die-forging forming is as follows: circular material blank being placed in complete lower die, the lower die and single side are complicated
Large scale flat part hot forging complex characteristic face shape it is identical, by the large scale flat part of single side complexity according to certain
Angular divisions are multiple portions, upper mold according to each section part without the planar design of complex characteristic, the upper mold downlink,
To the large scale flat part first part die-forging forming of single side complexity under the synergy of the lower die；The upper mold uplink,
The lower die rotates respective angles, and the second part of the large scale flat part of single side complexity is allowed to be located at immediately below the upper mold,
The upper mold downlink combines the large scale flat part second part die-forging forming for completing single side complexity with the lower die, repeats
The above process is until all division part all die forgings of single side complexity large scale flat part are completed.
2. a kind of precise forming process of the large scale flat part of single side complexity according to claim 1, it is characterised in that:
The step (2) is heated to be induction heating.
3. a kind of precise forming process of the large scale flat part of single side complexity according to claim 1, it is characterised in that:
Step (6) the circular material blank heating uses induction heating.
4. a kind of precise forming process of the large scale flat part of single side complexity according to claim 1, it is characterised in that:
Step (7) shaping independently carries out in another equipment or installs additional on dividing die-forging forming mold backing plate progress.
5. a kind of precise forming process of the large scale flat part of single side complexity according to claim 1, it is characterised in that:
It is suppressed described in step (6) and puts one piece of shaping flat bolster on the flat forging of large scale of the single side complexity of completion, upper mold downlink,
Backing plate carries out micro-deformation to forging under the pressure of the upper mold, completes step (7) shaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610535134.2A CN106181233B (en) | 2016-07-08 | 2016-07-08 | A kind of precise forming process of the large scale flat part of single side complexity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610535134.2A CN106181233B (en) | 2016-07-08 | 2016-07-08 | A kind of precise forming process of the large scale flat part of single side complexity |
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| CN106181233A CN106181233A (en) | 2016-12-07 |
| CN106181233B true CN106181233B (en) | 2019-02-22 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106734845A (en) * | 2017-01-18 | 2017-05-31 | 南京工程学院 | A kind of precise forming process of brake disc of high-speed train |
| CN110180987A (en) * | 2019-06-27 | 2019-08-30 | 洛阳Lyc轴承有限公司 | The forging molding process of complex thin-wall annular forging piece |
| CN110806736B (en) * | 2019-11-19 | 2021-10-15 | 北京工业大学 | Method for detecting quality information of forge pieces of die forging forming intelligent manufacturing production line |
| CN111843402B (en) * | 2020-08-07 | 2021-09-21 | 陕西智拓固相增材制造技术有限公司 | Machining method of wide chord blade |
| CN113878019B (en) * | 2021-10-15 | 2024-03-26 | 长安大学 | Forming process of cylinder reinforcing rib based on electro-plasticity and impact |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100023666A (en) * | 2008-08-22 | 2010-03-04 | 주식회사 만도 | Disc brake |
| CN101941646B (en) * | 2010-09-30 | 2012-08-22 | 广州中船黄埔造船有限公司 | Rotary bearing flange of portal jib crane |
| CN103831386B (en) * | 2013-12-16 | 2016-01-27 | 胡谦 | A kind of production method of brake disc of high-speed train and forging mold |
| CN105149892A (en) * | 2015-09-24 | 2015-12-16 | 青岛中天鹏锻压制造有限公司 | Precise forming method for steel-forged wheel-mounted disc brake of rail train |
| CN205047706U (en) * | 2015-09-24 | 2016-02-24 | 青岛中天鹏锻压制造有限公司 | Rail train steel forges wheel dress brake disc |
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