CN105364434A - Manufacturing method for forging die - Google Patents
Manufacturing method for forging die Download PDFInfo
- Publication number
- CN105364434A CN105364434A CN201510898520.3A CN201510898520A CN105364434A CN 105364434 A CN105364434 A CN 105364434A CN 201510898520 A CN201510898520 A CN 201510898520A CN 105364434 A CN105364434 A CN 105364434A
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- China
- Prior art keywords
- connector
- mould
- submodule
- design
- positioning
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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
- B23P15/24—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention relates to a manufacturing method for a forging die. The method comprises the steps that a whole die is designed, and the load and stress distributing situations of the die in working condition are calculated; according to obtained mechanical data, appropriate joint line positions are selected, so that the same die cavities in the whole die are formed by jointing all sub-dies; connecting pieces are designed according to the mechanical data, and it is required that the requirement for the design strength can be met by jointing the sub-dies into the whole die through the connecting pieces; all real objects are manufactured and are subjected to rough machining and heat treatment, and finish machining is conducted on planes for positioning and key grooves; positioning keys are installed in the positioning planes and used as a positioning datum, and then jointing and installing are conducted on other positions; and the jointed whole die is obtained, and the die cavities are machined. As the sizes of the sub-dies are small, the machining quality of the sub-dies can be guaranteed more easily, and the manufacturing cost is also reduced significantly; in addition, the multiple sub-dies can be manufactured at the same time, so that the machining period of the die is shortened correspondingly.
Description
Technical field
The present invention relates to the mould of forging, particularly a kind of manufacture method being applicable to large-sized forging mould.
Background technology
Hot forging processing needs to use forging die, and forging die cavity has contrary correspondingly-shaped concavo-convex with forging, and blank is pressed in forging die by the pressure of forging equipment, can obtain the forging of respective shapes.
Along with the development of FMT, the demand of large forgings gets more and more, and the also corresponding increase of the forging die size of its correspondence.Due to the performance of forging die and dimension precision requirement all very high, forging die size is larger, and its product quality is more difficult to ensure, manufacturing cost is higher.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of forging die manufacture method, large-scale forging die is processed and is more prone to, and manufacturing cost reduces.
The technical solution adopted for the present invention to solve the technical problems is:
Forging die manufacture method, comprises the following steps that order is carried out:
A, design unitary mould, calculate mould operationally, the load in three directions, space and residual stress distribution situation;
B, according to the residual stress distribution situation obtained in step A, the splicing seams position of design submodule tool, residual stress concentrations region will be avoided in splicing seams position, and forms the identical mold cavity of unitary mould after the splicing of all submodule tools;
C, load according to three directions, space obtained in step A, the material of the connector of design submodule tool selected by the bottom surface at stitching position place, side, shape and specification, can meet unitary mould design strength requirement operationally after requiring to adopt connector to carry out the splicing of submodule tool;
D, plane when choosing the splicing of submodule tool as plane of orientation, at the stitching portion Design Orientation keyway of all submodule tool plane of orientations, with positioning key;
E, sub-Design of Dies, stud connector design and the positioning key design obtained according to step C, D, produce submodule tool, connector and positioning key, and carry out roughing and heat treatment to all submodule tools, connector and positioning key;
The positioning spline of F, antithetical phrase mould, connector and positioning key carry out fine finishining, plane of orientation and other Mosaic faces of antithetical phrase mould carry out fine finishining, positioning key is loaded positioning spline, and positioning key and positioning spline is fixed with screw, all submodule tools are connected and fixed by recycling connector; The mold cavity combined is processed, forms the die cavity identical with unitary mould.
Further, the length of described unitary mould is more than three times of width.
Further, described connector comprises connecting plate and bolt, and in described step F, utilizing connector to be connected and fixed by all submodule tools, is side face seam place connecting plate being arranged on adjacent two sub-moulds, and connecting plate and submodule tool side is fixed with bolt.
Further, in described steps A, calculate mould operationally, the load in three directions, space and residual stress distribution situation pass through numerical simulation calculation.
The invention has the beneficial effects as follows: above-mentioned forging die manufacture method, unitary mould is divided into several submodule tool to manufacture, submodule tool can carry out installation with key, connector to be fixed, form the die cavity identical with unitary mould, because sub-die size is less, its crudy is more prone to ensure, manufacturing cost also significantly reduces; And multiple submodule tool can manufacture simultaneously, make the also corresponding shortening of Mould Machining cycle.
Accompanying drawing explanation
Fig. 1 is the schematic diagram after adopting the submodule tool of method manufacture of the present invention to be spliced into entirety;
In figure, Reference numeral is: submodule tool 1, plane of orientation 11, positioning key 2, connecting plate 3.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described:
Forging die manufacture method, comprises the following steps that order is carried out:
A, design unitary mould, calculate mould operationally, the load in three directions, space and residual stress distribution situation;
B, according to the residual stress distribution situation obtained in step A, the splicing seams position of design submodule tool, residual stress concentrations region will be avoided in splicing seams position, and forms the identical mold cavity of unitary mould after the splicing of all submodule tools;
C, load according to three directions, space obtained in step A, the material of the connector of design submodule tool selected by the bottom surface at stitching position place, side, shape and specification, can meet unitary mould design strength requirement operationally after requiring to adopt connector to carry out the splicing of submodule tool;
D, plane when choosing the splicing of submodule tool as plane of orientation, at the stitching portion Design Orientation keyway of all submodule tool plane of orientations, with positioning key;
E, sub-Design of Dies, stud connector design and the positioning key design obtained according to step C, D, produce submodule tool, connector and positioning key, and carry out roughing and heat treatment to all submodule tools, connector and positioning key;
The positioning spline of F, antithetical phrase mould, connector and positioning key carry out fine finishining, plane of orientation and other Mosaic faces of antithetical phrase mould carry out fine finishining, positioning key is loaded positioning spline, and positioning key and positioning spline is fixed with screw, all submodule tools are connected and fixed by recycling connector; The mold cavity combined is processed, forms the die cavity identical with unitary mould.
Forging die manufacture method of the present invention, is specially adapted to large-scale forging die, and the length being especially applicable to unitary mould is the large-scale forging die of rectangular class of more than three times of width.
Its basic process is, first go out unitary mould according to Demand Design, then calculates this mould operationally, the load condition in three directions, space, and the distribution situation of residual stress, concrete computational process, preferably can adopt computer to carry out numerical simulation calculation.
Then according to the distribution situation of residual stress, select suitable submodule tool splicing seams position, forming a unitary mould after making all submodule tool splicings, is namely that the mould be spliced into has the die cavity identical with unitary mould.Stitching position is selected to avoid residual stress concentrations region, and deform in stitching portion when preventing mould from using destruction.
Then according to the load in aforementioned three directions, space obtained, the shape, material, connected mode etc. of design connector, connector be used for adjacent submodule tool is connected into entirety, and connector need enough intensity make submodule tool splice after can meet unitary mould design strength requirement operationally.
Plane when needing to choose the splicing of submodule tool is as plane of orientation, and plane of orientation is used for arranging positioning spline, and positioning spline is used for the benchmark of follow-up sub-Mould Machining and splicing, according to positioning spline Design Orientation key.
According to the design of aforesaid sub-Design of Dies, stud connector design and positioning key, produce the material object of submodule tool, connector and positioning key, and roughing and heat treatment are carried out to all submodule tools, connector and positioning key.
Then carrying out fine finishining to the positioning spline of all submodule tools, carry out fine finishining, require that processing reaches design standard to connector and positioning key, is then benchmark with positioning spline, and plane of orientation and other Mosaic faces of antithetical phrase mould carry out fine finishining.
Positioning key is loaded positioning spline, submodule tool is accurately spliced, and with screw, positioning key and positioning spline are fixed, all submodule tools are connected and fixed by recycling connector, now all submodule tools are spliced into an entirety, the mold cavity combined is processed, forms the die cavity with unitary mould same size.
So far, a set of unitary mould manufacture be spliced to form by submodule tool completes, and because sub-die size is less than unitary mould, in sub-die manufacture, the operating process such as such as forging, heat treatment, quality more easily ensures, and manufacturing cost is also lower.The plane of orientation of submodule tool is provided with positioning spline as the benchmark processed and install, and can ensure that submodule tool has enough dimensional accuracies after connecting.Adopt connector to be connected and fixed between submodule tool, the intensity of connector can meet performance requirement when mould uses.
Owing to adopting the form of submodule tool splicing, when damaging appears in a certain piece of submodule tool, can repair this block submodule tool or change separately, forging die maintenance cost reduces.
This forging die manufacture method, is particularly useful for the elongated mould that length is more than three times of width.
Such as shown in Fig. 1: in this embodiment, forging die material is 5CrNiMo mould steel, and appearance profile is of a size of 6900 × 1500 × 600mm, overall growth bar shaped.
Adopt forging die manufacture method of the present invention, after designing unitary mould, utilize digital simulation to calculate unitary mould load operationally and residual stress situation, be defined as three sub-moulds 1 in Fig. 1 and splice, three sub-die shape overall sizes are 2300 × 1500 × 600mm.
The bottom surface of submodule tool 1 is plane of orientation 11, devises positioning spline at plane of orientation 11 seam crossing of all submodule tools, and corresponding positioning key 2, and positioning spline and positioning key 2 adopt sunk screw to be fixed; Devise connecting plate 3 in side face seam place of adjacent two sub-moulds 1, and with bolt, connecting plate and submodule tool side are fixed.
The positioning key 2 designed, connecting plate 3, sunk screw and bolt material are all adopted as 5CrNiMo mould steel, and positioning key 2 appearance profile is of a size of 480 × 120 × 65mm, totally 2; The sunk screw nominal diameter φ 20mm of stationary positioned key 2, adopts coarse thread, totally 4; Connecting plate 3 appearance profile is of a size of 1760 × 410 × 188mm, totally 4; Install the bolt diameter φ 42mm of connecting plate 3, adopt coarse thread, each connecting plate 3 arranges 16 bolts.
Subsequently according to previous designs, produce all submodule tools 1, connecting plate 3 and positioning key 2 in kind, and carry out roughing and heat treatment, roughing surplus is 10mm.
The positioning spline of antithetical phrase mould 1, connector 3 and positioning key 2 carry out fine finishining, fine finishining is carried out in the plane of orientation 11 of antithetical phrase mould 1 and the side of splicing, and positioning key 2 is loaded positioning spline, and fastening with sunk screw, carry out the installation of the connecting plate 3 of side and fastening again, mould has spliced.Finally fine finishining is carried out to the structure of mold cavity, make it form the die cavity identical with unitary mould.
Claims (4)
1. forging die manufacture method, is characterized in that, comprises the following steps that order is carried out:
A, design unitary mould, calculate mould operationally, the load in three directions, space and residual stress distribution situation;
B, according to the residual stress distribution situation obtained in step A, the splicing seams position of design submodule tool, residual stress concentrations region will be avoided in splicing seams position, and forms the identical mold cavity of unitary mould after the splicing of all submodule tools;
C, load according to three directions, space obtained in step A, the material of the connector of design submodule tool selected by the bottom surface at stitching position place, side, shape and specification, can meet unitary mould design strength requirement operationally after requiring to adopt connector to carry out the splicing of submodule tool;
D, plane when choosing the splicing of submodule tool as plane of orientation, at the stitching portion Design Orientation keyway of all submodule tool plane of orientations, with positioning key;
E, sub-Design of Dies, stud connector design and the positioning key design obtained according to step C, D, produce submodule tool, connector and positioning key, and carry out roughing and heat treatment to all submodule tools, connector and positioning key;
The positioning spline of F, antithetical phrase mould, connector and positioning key carry out fine finishining, plane of orientation and other Mosaic faces of antithetical phrase mould carry out fine finishining, positioning key is loaded positioning spline, and positioning key and positioning spline is fixed with screw, all submodule tools are connected and fixed by recycling connector; The mold cavity combined is processed, forms the die cavity identical with unitary mould.
2. forging die manufacture method as claimed in claim 1, it is characterized in that, the length of described unitary mould is more than three times of width.
3. forging die manufacture method as claimed in claim 1 or 2, it is characterized in that, described connector comprises connecting plate and bolt, in described step F, connector is utilized to be connected and fixed by all submodule tools, be side face seam place connecting plate being arranged on adjacent two sub-moulds, and with bolt, connecting plate and submodule tool side fixed.
4. forging die manufacture method as claimed in claim 3, is characterized in that, in described steps A, calculate mould operationally, the load in three directions, space and residual stress distribution situation pass through numerical simulation calculation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510898520.3A CN105364434B (en) | 2015-12-08 | 2015-12-08 | Forging die manufacture method |
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| CN201510898520.3A CN105364434B (en) | 2015-12-08 | 2015-12-08 | Forging die manufacture method |
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| CN105364434B CN105364434B (en) | 2017-09-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107553792A (en) * | 2017-10-26 | 2018-01-09 | 东莞安力五金塑胶制品有限公司 | Large mold splices method |
| CN110524207A (en) * | 2019-09-10 | 2019-12-03 | 云南濮耐昆钢高温材料有限公司 | A kind of combinational processing method of irregular mold |
| CN112192162A (en) * | 2020-10-13 | 2021-01-08 | 上海科力机械制造有限公司 | Processing technology of side plate of printing machine |
| CN112692526A (en) * | 2020-12-18 | 2021-04-23 | 陕西宏远航空锻造有限责任公司 | Closed extrusion die machining method |
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| JPH05253696A (en) * | 1992-03-11 | 1993-10-05 | Honda Motor Co Ltd | Pressing machine |
| CN101284294A (en) * | 2007-04-10 | 2008-10-15 | 上海电气集团上海电机厂有限公司 | Silicon steel sheet punching die blade blocks and processing technique |
| CN103128174A (en) * | 2013-03-07 | 2013-06-05 | 沈阳化工大学 | Assembly die for cold stamping and forming of auto-body panels and design method of assembly die |
| CN104259788A (en) * | 2014-09-29 | 2015-01-07 | 安徽成飞集成瑞鹄汽车模具有限公司 | Machining method of mold insert |
| CN104339185A (en) * | 2013-08-07 | 2015-02-11 | 江苏博俊工业科技股份有限公司 | Sectional machining structure of large stamping die set |
| CN204657416U (en) * | 2015-03-31 | 2015-09-23 | 西华大学 | A kind of combined type Mould for casting ball |
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2015
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| JPH05253696A (en) * | 1992-03-11 | 1993-10-05 | Honda Motor Co Ltd | Pressing machine |
| CN101284294A (en) * | 2007-04-10 | 2008-10-15 | 上海电气集团上海电机厂有限公司 | Silicon steel sheet punching die blade blocks and processing technique |
| CN103128174A (en) * | 2013-03-07 | 2013-06-05 | 沈阳化工大学 | Assembly die for cold stamping and forming of auto-body panels and design method of assembly die |
| CN104339185A (en) * | 2013-08-07 | 2015-02-11 | 江苏博俊工业科技股份有限公司 | Sectional machining structure of large stamping die set |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107553792A (en) * | 2017-10-26 | 2018-01-09 | 东莞安力五金塑胶制品有限公司 | Large mold splices method |
| CN110524207A (en) * | 2019-09-10 | 2019-12-03 | 云南濮耐昆钢高温材料有限公司 | A kind of combinational processing method of irregular mold |
| CN112192162A (en) * | 2020-10-13 | 2021-01-08 | 上海科力机械制造有限公司 | Processing technology of side plate of printing machine |
| CN112192162B (en) * | 2020-10-13 | 2022-07-01 | 上海科力机械制造有限公司 | Processing technology of side plate of printing machine |
| CN112692526A (en) * | 2020-12-18 | 2021-04-23 | 陕西宏远航空锻造有限责任公司 | Closed extrusion die machining method |
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| CN105364434B (en) | 2017-09-15 |
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