CN109465375A - A kind of die forging method of high-speed railway track switch iron seat - Google Patents
A kind of die forging method of high-speed railway track switch iron seat Download PDFInfo
- Publication number
- CN109465375A CN109465375A CN201811587577.1A CN201811587577A CN109465375A CN 109465375 A CN109465375 A CN 109465375A CN 201811587577 A CN201811587577 A CN 201811587577A CN 109465375 A CN109465375 A CN 109465375A
- Authority
- CN
- China
- Prior art keywords
- forging
- dovetail groove
- iron seat
- track switch
- speed railway
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K7/00—Making railway appurtenances; Making vehicle parts
- B21K7/02—Making railway appurtenances; Making vehicle parts parts for permanent way
- B21K7/08—Making railway appurtenances; Making vehicle parts parts for permanent way base plates for rails, e.g. chairs
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of die forging methods of high-speed railway track switch iron seat, including blanking, heating, blocking, finish-forging, finishing, in blocking work step, hot blank is put into blocker longitudinally to press, hot blank is forged into intermediate base, the intermediate base includes iron seat ontology, two spring positioning supports are forged and pressed out on iron seat ontology, Qian shape through slot, dovetail groove intermediate, in finish-forging work step, intermediate base is put into finisher, pass through lateral mold core channel from the outside of terminal section mould and is put into dovetail groove formation die core into the Qian shape through slot of intermediate base, start forging machine, forging and stamping are carried out to intermediate base with upper mold and form two spring fixed platforms, tommyhead bolt fixed card slot and postive stop baffle.The die forging method simple process, high production efficiency, appearance geometry can be produced using the common forging machine longitudinally to press and comprehensive mechanical performance is superior to the high-speed railway track switch iron seat of existing product, quasi- high, the excellent in cushion effect, long service life of high-speed railway track switch iron coordinate produced.
Description
Technical field
The present invention relates to a kind of production method of high-speed railway track switch iron seat, especially a kind of high-speed railway track switch iron seat die forging manufacturer
Method.
Background technique
High-speed railway track switch iron seat is the important secure component pedestal of high-speed rail trapped orbit, should when high-speed rail or motor-car high-speed cruising
Component bears intense impact and vibration.The tommyhead bolt being put into tommyhead bolt in iron seat is needed to fix when high-speed railway track switch iron seat use
In card slot, then spring is placed on iron seat, spring is fixed on iron seat by the fastening nut on tommyhead bolt.Due to iron seat
Appearance geometrical form is special, and tommyhead bolt fixed card slot is up-narrow and down-wide dovetail groove, therefore, gives birth in the prior art
The technique that this high-speed railway track switch iron seat mostly uses casting is produced, although casting technique can produce this particular geometry structure
Iron seat.But this iron seat using casting technique production often will appear Broken condition in use, and it is hidden to generate serious safety
Suffer from, timely repair and replacement is needed, to guarantee train operating safety.Therefore, a large amount of maintenance and renewal cost can be generated.By dividing
The fracture main cause of analysis discovery iron seat is: first is that it is loose using the iron seat product matrix metallographic structure that casting technique produces, resist
Impact strength is low；Second is that there is the defects of being mingled with, stomata using the iron seat interiors of products tissue of casting technique production.CN
104708291 A disclose a kind of method of railway switch iron seat precise extrusion molding, and this method is first according to iron seat material
And size requires to choose bar or square stock, carries out equidimension blanking by sawing machine or shearing machine；It then will be in lower good blank entrance
Frequency induction heater is heated, the initial forging temperature of heating temperature to material, and temperature is uniform, the blank that will be heated, and is entered
De-scaling device, removal heating blank surface oxide skin, by treated, blank is put into fly press blocking station, carries out
Blocking shapes, and blank temperature drop is required to material final forging temperature is met after the completion of blocking station；Prefabricated blank is put into later
In multidirectional extruder, the forming of iron seat is realized by the extruding of four direction, using die forging base and the forming mode of multidirectional extruding,
Tapping seat new product is shaped by the reasonable distribution of deflection, the more excellent forging iron seat of mechanical performance can be prepared in batches
Product.Although method disclosed in 104708291 A of CN is able to produce out forging iron seat product and still needs to make in production process
With multidirectional extruder, and multidirectional extruder system involves great expense, and substantially increases the manufacturing cost of forging iron seat, loses product
The market competitiveness.108672646 A of CN discloses a kind of iron seat contour forging technique, it includes bending base, die-forging forming and punching press
It the step of three steps of integer, this method is by bending base, die-forging forming and punching press integer, avoids in common die forging process
In, workpiece is unable to the defect of demoulding after dovetail configuration forges successfully.But the process is more complicated for this method, production efficiency is low, and
And in last punching press shaping step, it is easy to form crackle or structural weak points in iron seat bottom, it is easier to cause iron seat bottom
Track gauge block fixed card slot deformation, influence the total quality of product.
Summary of the invention
Technical problems to be solved by the inivention are: providing a kind of die forging method of high-speed railway track switch iron seat, the die forging method technique
Simply, high production efficiency can produce appearance geometry and comprehensive mechanical using the common forging machine longitudinally to press
It can be superior to the high-speed railway track switch iron seat of existing product, high-speed railway track switch iron coordinate standard produced is high, excellent in cushion effect, uses the longevity
Life length.
The technical solution adopted for solving the technical problem: a kind of die forging method of high-speed railway track switch iron seat, the high-speed railway track switch
Iron seat includes iron seat ontology, symmetrical two spring fixed platforms and spring positioning support is equipped on iron seat ontology, two
Tommyhead bolt fixed card slot is equipped between a spring fixed platform, the tommyhead bolt fixed card slot is up-narrow and down-wide dovetail groove,
Bolt channels are equipped at the top of dovetail groove, are equipped in the dovetail groove close to spring positioning support side inside by dovetail groove two sidewalls
Postive stop baffle outstanding, the die forging method of the high-speed railway track switch iron seat include blanking, heating, blocking, finish-forging, finishing,
In blocking work step, hot blank is put into blocker, hot blank is applied along longitudinal direction from upper and lower both direction with upper die and lower die
Pressure, forges into intermediate base for hot blank, and the intermediate base includes iron seat ontology, and two spring positioning are forged and pressed out on iron seat ontology
Support forms the Qian shape through slot at perforation iron seat both ends between two spring positioning supports, it is solid to correspond to tommyhead bolt in Qian shape through slot two sides
Determine groove position and form two symmetrical dovetail groove intermediates, the dovetail groove intermediate is the plane where spring fixed platform
The Material projected upwards has lead-in chamfered in the outside of each dovetail groove intermediate, and lead-in chamfered makes dovetail groove intermediate exist
To accumulation deformation on the inside of Qian shape through slot when by top pressure；
In finish-forging work step, intermediate base is put into finisher, passes through Qian of the lateral mold core channel to intermediate base from the outside of terminal section mould
Dovetail groove formation die core is put into shape through slot, the section of the dovetail groove formation die core is and tommyhead bolt fixed card slot section pair
The swallow-tail form answered is equipped with the section that inside contracts for being used to form postive stop baffle in the front end of dovetail groove formation die core, starts forging machine, use
Mould forges and presses intermediate base and flattens to form two spring fixed platforms by two dovetail groove intermediates, while making two dovetail grooves
Intermediate is only deformed to accumulation on the inside of Qian shape through slot under the constraint of impression, and forms T under the constraint of dovetail groove formation die core
Shape bolt fixed card slot and postive stop baffle.
As an improvement of the present invention: the lead-in chamfered of dovetail groove intermediate and the angle in spring fixed platform face are 40-50
Degree.
As a further improvement of the present invention: the lead-in chamfered of dovetail groove intermediate and the angle in spring fixed platform face are
45 degree.
As a further improvement of the present invention: material reducing slot is equipped in the lead-in chamfered of dovetail groove intermediate, it is described to subtract
Hopper is the inclined groove along the arc section of lead-in chamfered tendency setting, inclined groove by the top of dovetail groove intermediate downwards by
Gradual change is shallow, and disappears at spring fixed platform plane.
As preferred plan of the invention: being equipped with blocker and finisher simultaneously in the upper die and lower die of forging equipment
Thorax is put into hot blank into blocker before forging and stamping, intermediate base is put into finish impression, by this forging and stamping production after forging and stamping
Intermediate base is moved rapidly into finish impression, meanwhile, it is put into new hot blank into blocker, is transferred to and forges and presses next time.
The utility model has the advantages that the die forging method of high-speed railway track switch iron seat of the invention, due to using in blocking work step, with upper mold and
Lower die presses along longitudinal direction to hot blank from upper and lower both direction, and hot blank is forged into intermediate base, forges dovetail in advance in intermediate base
Slot intermediate in the outside of dovetail groove intermediate there is lead-in chamfered intermediate base is put into finisher, from end in finish-forging work step
The outside of Duan Mo is put into dovetail groove formation die core into the Qian shape through slot of intermediate base by mold core channel, then with upper mold to intermediate base
It is forged and pressed, two dovetail groove intermediates is flattened to form two spring fixed platforms, while two dovetail groove intermediates being made to exist
Only to accumulation deformation on the inside of Qian shape through slot under the constraint of impression, and tommyhead bolt is formed under the constraint of dovetail groove formation die core and is consolidated
Determine the technical solution of card slot and postive stop baffle, so that the die forging method of high-speed railway track switch iron seat of the invention, without price height
High multidirectional forging equipment, and use common longitudinal forging equipment (die hammer, friction press, hydraulic press, hydraulic press etc.)
The high-speed railway track switch iron seat that high standard can be produced by blocking and finish-forging two forging steps, due to being not necessarily in forging process
Bending is carried out to blank, carries out punching press smoothing without to the iron seat after finish-forging, therefore, simple process, high production efficiency, and institute
The high-speed railway track switch iron seat integral strength produced is high, and anti-impact force intensity is high, long service life, since the iron seat after finish-forging does not have to
Punching press smoothing is carried out again, and therefore, the geometric shape for the high-speed railway track switch iron seat produced, which will not be stamped, smooths processing damage, makes
The high-speed railway track switch iron seat shape that must be produced is regular, better quality.Guidance due to reasonably defining dovetail groove intermediate is oblique
The angle in face and spring fixed platform face, from heap on the inside of trend Qian shape through slot after making dovetail groove intermediate be pressurized during finish-forging
Product deformation, is formed by tommyhead bolt fixed card slot better quality.It is set in the lead-in chamfered of dovetail groove intermediate due to using
There is material reducing slot, the material reducing slot is along the inclined groove of the arc section of lead-in chamfered tendency setting, and inclined groove is by dovetail groove
The technical characteristic for gradually becoming shallower as downwards at the top of intermediate, and disappearing at spring fixed platform plane, is accurately controlled by material reducing slot
The volume of dovetail groove intermediate processed forms complete tommyhead bolt after ensuring that dovetail groove intermediate is accumulated according to the predetermined direction and fixes
Under the premise of card slot and postive stop baffle, reduce flash amount to the maximum extent, also, make during finish-forging dovetail groove intermediate by
Pressure initial stage will accumulate deformation inwardly automatically, with common forging equipment using longitudinal pressure can die forging produce high quality
High-speed railway track switch iron seat.Blocker and finish impression are equipped with simultaneously in the upper die and lower die of forging equipment due to using,
It is put into hot blank into blocker before forging and stamping, intermediate base is put into finish impression, it will be in this forging and stamping production after forging and stamping
Between base be moved rapidly into finish impression, meanwhile, new hot blank is put into blocker, it is special to be transferred to the technology that forges and presses next time
Sign, primary forging and stamping can produce an intermediate base and a finish-forging base, make the die forging method of high-speed railway track switch iron seat of the invention
Production efficiency be further enhanced, and reduce the investment of equipment, achieve significant economic benefit.
Detailed description of the invention
The die forging method of high-speed railway track switch iron seat of the invention is described in further detail with reference to the accompanying drawing.
Fig. 1 is the high-speed railway track switch iron seat finished product main view gone out using the die forging method finish-forging of high-speed railway track switch iron seat of the invention
Figure；
Fig. 2 is the high-speed railway track switch iron seat finished product cross-sectional view gone out using the die forging method finish-forging of high-speed railway track switch iron seat of the invention；
Fig. 3 is the high-speed railway track switch iron seat finished product top view gone out using the die forging method finish-forging of high-speed railway track switch iron seat of the invention；
Fig. 4 is base main view among the high-speed railway track switch iron seat forged in advance using the die forging method of high-speed railway track switch iron seat of the invention；
Fig. 5 is base left view among the high-speed railway track switch iron seat forged in advance using the die forging method of high-speed railway track switch iron seat of the invention；
Fig. 6 is base top view among the high-speed railway track switch iron seat forged in advance using the die forging method of high-speed railway track switch iron seat of the invention；
Fig. 7 is the structural schematic diagram for implementing the forging equipment of die forging method of high-speed railway track switch iron seat of the invention.
Specific embodiment
Fig. 1, Fig. 2, Fig. 3 show the high-speed railway track switch iron produced using the die forging method of high-speed railway track switch iron seat of the invention
The structure of seat, the high-speed railway track switch iron seat includes iron seat ontology 6, and symmetrical two springs are equipped on iron seat ontology and are fixed
Platform 1 and spring position support 5, and tommyhead bolt fixed card slot 4 is equipped between two spring fixed platforms, and the tommyhead bolt is fixed
Card slot is up-narrow and down-wide dovetail groove, is equipped with bolt channels 2 at the top of dovetail groove, in the dovetail groove close to spring positioning support side
It is interior equipped with the postive stop baffle 3 protruded inwardly from by dovetail groove two sidewalls.
The die forging method of high-speed railway track switch iron seat of the invention includes:
Round steel or square steel, band steel sawing machine are pressed defined size dissection blanking, obtain blank by blanking.
Heating, obtains hot base to 1180 ~ 1220 degrees Celsius for blank heating with heat transmitting furnace of medium-frequency induction or other heating equipments
Material.
Hot blank is put into blocker by blocking, with upper die and lower die pressure from upper and lower both direction to hot blank along longitudinal direction
Pressure, forges into intermediate base for hot blank.
Intermediate base is put into finisher by finish-forging, at this point, intermediate base is also in the red-hot state that can be forged, from terminal section mould
Outside pass through lateral mold core channel and be put into dovetail groove formation die core, the dovetail groove forming die into the Qian shape through slot of intermediate base
The section of core is swallow-tail form corresponding with tommyhead bolt fixed card slot section, is equipped in the front end of dovetail groove formation die core and is used for shape
Section is inside contracted at postive stop baffle, intermediate base is forged and pressed with upper mold to flatten in two dovetail groove intermediates to form two springs and consolidate
Fixed platform, while making two dovetail groove intermediates under the constraint of impression only to centre accumulation deformation, and in dovetail groove forming die
Tommyhead bolt fixed card slot and postive stop baffle are formed under the constraint of core, obtain finish-forging base.
Finishing is polished to finish-forging base or is cut, removes Burr removal, obtain high-speed railway track switch iron seat finished product.
As shown in Fig. 4, Fig. 5, Fig. 6, the intermediate base includes iron seat ontology 6, and two springs are forged and pressed out on iron seat ontology
Support 5 is positioned, the Qian shape through slot 43 at perforation iron seat both ends is formed between two spring positioning supports, corresponds to T in Qian shape through slot two sides
Shape bolt fixed card slot position forms two symmetrical dovetail groove intermediates 41, and the dovetail groove intermediate is fixed flat by spring
The Material that plane where platform projects upwards has lead-in chamfered 42 in the outside of each dovetail groove intermediate, and lead-in chamfered makes to expect
Body accumulates deformation inwardly when by top pressure, the lead-in chamfered of dovetail groove intermediate and spring fixed platform in intermediate base
The angle in face is 40-50 degree, it is preferable that the lead-in chamfered of dovetail groove intermediate and the angle in spring fixed platform face are 45 degree,
Material reducing slot is equipped in the lead-in chamfered of dovetail groove intermediate, the material reducing slot is the arc section along lead-in chamfered tendency setting
Inclined groove 44, inclined groove disappears at spring fixed platform plane by gradually becoming shallower as downwards at the top of dovetail groove intermediate
It loses.In the intermediate base formed after blocking in addition to tommyhead bolt fixed card slot, postive stop baffle and spring fixed platform, Qi Tajie
Structure has been completed in blocking.
The forging equipment for implementing the die forging method of high-speed railway track switch iron seat of the present invention includes pre- forging device and finish-forging device, Fig. 7
Forging equipment primary structure is shown, which includes 27 He of press and the upper mold being mounted on press
Lower die 29 is equipped with mutually matched positioning fastener 26 at the middle part of upper die and lower die, forms terminal section mould after lower die and lower die pressing
Thorax 25 and blocker 28 are provided with the lateral mold core channel 22 for being connected to finish-forging type chamber with outside in lower die, in mold core channel
Equipped with can be equipped in the front end of dovetail groove formation die core and be used for shape along the dovetail groove formation die core 23 of mold core channel disengaging type chamber
Section 24 is inside contracted at postive stop baffle, the mold core driving dress for making dovetail groove formation die core reach designated position is additionally provided with outside lower die
21 are set, the mold core driving device is pneumatic linear actuator, hydraulic cylinder or electromagnetism cylinder isoline reciprocating drive unit.
Blocker and finish impression are equipped with simultaneously in the upper die and lower die of forging equipment, before forging and stamping into blocker
It is put into hot blank, intermediate base is put into finish impression, the intermediate base after forging and stamping by this forging and stamping production is moved rapidly into finish-forging
Impression, meanwhile, it is put into new hot blank into blocker, is transferred to the technical characteristic forged and pressed next time, primary forging and stamping can give birth to
One intermediate base of output and a finish-forging base obtain the production efficiency of the die forging method of high-speed railway track switch iron seat of the invention further
To raising, and reduce the investment of equipment, achieves significant economic benefit.
The iron base member product gone out using die forging method of the invention, final production, is done impact test through user, tested
Demonstrate,prove result forging part and than cast member shock resistance value improve three times or more, thoroughly solve iron base member occur in use it is disconnected
Phenomenon is split, the favorable comment of user is received.High-speed railway rail track switch iron base member, the success of forge piece is changed to by cast member, is railway
Department provides reliable safety assurance in terms of safe operation.A large amount of maintenance maintenance expense, economic benefit have been saved simultaneously
Obviously.
Claims (5)
1. a kind of die forging method of high-speed railway track switch iron seat, the high-speed railway track switch iron seat includes iron seat ontology, is set on iron seat ontology
There are symmetrical two spring fixed platforms and spring positioning support, it is solid equipped with tommyhead bolt between two spring fixed platforms
Determine card slot, the tommyhead bolt fixed card slot is up-narrow and down-wide dovetail groove, is equipped with bolt channels at the top of dovetail groove, is leaning on
The postive stop baffle protruded inwardly from by dovetail groove two sidewalls, the high-speed railway track switch iron seat are equipped in the dovetail groove of short round item positioning support side
Die forging method include blanking, heating, blocking, finish-forging, finishing, it is characterized in that:
In blocking work step, hot blank is put into blocker, hot blank is applied along longitudinal direction from upper and lower both direction with upper die and lower die
Pressure, forges into intermediate base for hot blank, and the intermediate base includes iron seat ontology, and two spring positioning are forged and pressed out on iron seat ontology
Support forms the Qian shape through slot at perforation iron seat both ends between two spring positioning supports, it is solid to correspond to tommyhead bolt in Qian shape through slot two sides
Determine groove position and form two symmetrical dovetail groove intermediates, the dovetail groove intermediate is the plane where spring fixed platform
The Material projected upwards has lead-in chamfered in the outside of each dovetail groove intermediate, and lead-in chamfered makes dovetail groove intermediate exist
To accumulation deformation on the inside of Qian shape through slot when by top pressure；
In finish-forging work step, intermediate base is put into finisher, passes through Qian of the lateral mold core channel to intermediate base from the outside of terminal section mould
Dovetail groove formation die core is put into shape through slot, the section of the dovetail groove formation die core is and tommyhead bolt fixed card slot section pair
The swallow-tail form answered is equipped with the section that inside contracts for being used to form postive stop baffle in the front end of dovetail groove formation die core, starts forging machine, use
Mould forges and presses intermediate base and flattens to form two spring fixed platforms by two dovetail groove intermediates, while making two dovetail grooves
Intermediate is only deformed to accumulation on the inside of Qian shape through slot under the constraint of impression, and forms T under the constraint of dovetail groove formation die core
Shape bolt fixed card slot and postive stop baffle.
2. the die forging method of high-speed railway track switch iron seat according to claim 1, it is characterized in that: the guidance of dovetail groove intermediate is oblique
The angle in face and spring fixed platform face is 40-50 degree.
3. the die forging method of high-speed railway track switch iron seat according to claim 2, it is characterized in that: the guidance of dovetail groove intermediate is oblique
The angle in face and spring fixed platform face is 45 degree.
4. the die forging method of high-speed railway track switch iron seat according to claim 3, it is characterized in that: in the guidance of dovetail groove intermediate
Inclined-plane is equipped with material reducing slot, and the material reducing slot is the inclined groove along the arc section of lead-in chamfered tendency setting, inclined groove
By being gradually become shallower as downwards at the top of dovetail groove intermediate, and disappear at spring fixed platform plane.
5. the die forging method of high-speed railway track switch iron seat according to any one of claims 1 to 4, it is characterized in that: in forging equipment
Upper die and lower die in simultaneously be equipped with blocker and finish impression, forging and stamping before hot blank is put into blocker, to finish-forging
Intermediate base is put into impression, the intermediate base after forging and stamping by this forging and stamping production is moved rapidly into finish impression, meanwhile, to blocker
It is put into new hot blank in thorax, is transferred to and forges and presses next time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811587577.1A CN109465375B (en) | 2018-12-25 | 2018-12-25 | Die forging method for high-speed railway turnout iron seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811587577.1A CN109465375B (en) | 2018-12-25 | 2018-12-25 | Die forging method for high-speed railway turnout iron seat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109465375A true CN109465375A (en) | 2019-03-15 |
| CN109465375B CN109465375B (en) | 2020-03-31 |
Family
ID=65677393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811587577.1A Expired - Fee Related CN109465375B (en) | 2018-12-25 | 2018-12-25 | Die forging method for high-speed railway turnout iron seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109465375B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110479938A (en) * | 2019-08-01 | 2019-11-22 | 中冶重工（唐山）有限公司 | The forging and molding mold and manufacturing process of flanged ball valve forging |
| CN110814244A (en) * | 2019-10-12 | 2020-02-21 | 浙江华广精工制造有限公司 | Railway track supporting plate iron seat and deformation precision forging process thereof |
| CN111036814A (en) * | 2019-12-20 | 2020-04-21 | 哈尔滨工业大学（威海） | Special-shaped multi-way joint multi-way flexible loading integral forming device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE569322C (en) * | 1931-09-12 | 1933-02-01 | Maschb Akt Ges Vormals Ehrhard | Manufacture of rail chairs from U-shaped rolled iron sections |
| JP3231084B2 (en) * | 1992-07-20 | 2001-11-19 | アルプス電気株式会社 | Manufacturing method of variable resistor |
| CN104259797A (en) * | 2014-09-28 | 2015-01-07 | 偃师市华信机械有限公司 | Forging method of iron pedestal for high-speed rail |
| CN104708291A (en) * | 2015-03-30 | 2015-06-17 | 北京机电研究所 | Method for precise extrusion forming of iron pedestal for railway switch |
| CN105945204A (en) * | 2016-05-31 | 2016-09-21 | 浙江华广精工制造有限公司 | Cutting-free forging process of steel rail fastener iron base |
-
2018
- 2018-12-25 CN CN201811587577.1A patent/CN109465375B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE569322C (en) * | 1931-09-12 | 1933-02-01 | Maschb Akt Ges Vormals Ehrhard | Manufacture of rail chairs from U-shaped rolled iron sections |
| JP3231084B2 (en) * | 1992-07-20 | 2001-11-19 | アルプス電気株式会社 | Manufacturing method of variable resistor |
| CN104259797A (en) * | 2014-09-28 | 2015-01-07 | 偃师市华信机械有限公司 | Forging method of iron pedestal for high-speed rail |
| CN104708291A (en) * | 2015-03-30 | 2015-06-17 | 北京机电研究所 | Method for precise extrusion forming of iron pedestal for railway switch |
| CN105945204A (en) * | 2016-05-31 | 2016-09-21 | 浙江华广精工制造有限公司 | Cutting-free forging process of steel rail fastener iron base |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110479938A (en) * | 2019-08-01 | 2019-11-22 | 中冶重工（唐山）有限公司 | The forging and molding mold and manufacturing process of flanged ball valve forging |
| CN110814244A (en) * | 2019-10-12 | 2020-02-21 | 浙江华广精工制造有限公司 | Railway track supporting plate iron seat and deformation precision forging process thereof |
| CN111036814A (en) * | 2019-12-20 | 2020-04-21 | 哈尔滨工业大学（威海） | Special-shaped multi-way joint multi-way flexible loading integral forming device and method |
| CN111036814B (en) * | 2019-12-20 | 2021-07-06 | 哈尔滨工业大学（威海） | Special-shaped multi-way joint multi-way flexible loading integral forming device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109465375B (en) | 2020-03-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102513444B (en) | Composite flanging mechanism of stamping die | |
| CN109465375A (en) | A kind of die forging method of high-speed railway track switch iron seat | |
| CN102513445B (en) | Trimming and flanging composite stamping die | |
| CN104057263B (en) | Large-scale locomotive connecting rod forging technology | |
| CN105792957A (en) | Press molding device, production method for press molded article using said molding device, and press molded article | |
| CN103302226A (en) | Precise forging process for front upper arm part of car chassis suspension system | |
| CN106552864B (en) | Automobile chassis lower swing arm upper plate multi-station Die Used in Pressworking and its method | |
| CN104259797A (en) | Forging method of iron pedestal for high-speed rail | |
| CN103567340A (en) | Novel precision forging technology of straight toothed spur gear for automobile and mold | |
| CN104708291A (en) | Method for precise extrusion forming of iron pedestal for railway switch | |
| CN104815936A (en) | Forge forming method and special mold for fork type pieces such as high reinforcing bars and thin web plates | |
| CN108672646A (en) | A kind of iron seat contour forging technique | |
| CN102909257A (en) | Lateral punching mold of groove-shaped workpiece | |
| CN106925652B (en) | A kind of drawing forming process and its stamping die | |
| CN102166611B (en) | Long bar continuously upsetting device and method for railway wagon brake pull rod | |
| CN107598726A (en) | A kind of modified form arc chord angle sanding apparatus | |
| CN102049456B (en) | Multi-ram die forging process method and die for 40Cr-steel frame type parts | |
| CN103447779A (en) | Drive axle bevel gear forge piece forging process and equipment | |
| CN101961765A (en) | Manufacturing process and equipment for upset forging of flanges | |
| CN107649639A (en) | Locomotive slip yoke forging technology | |
| CN201353616Y (en) | Thermoforming, punching and trimming integrated die of high-strength steel elements | |
| CN103801915A (en) | Whole forming method for U-shaped plates of suspension series components of armoured vehicle | |
| CN209349454U (en) | A kind of dedicated forging equipment of high-speed railway track switch iron seat | |
| CN201862725U (en) | Multi-die-forging mold for part of 40 Cr steel machine case | |
| CN106881410A (en) | A kind of Hardware fitting stamping mold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200331 Termination date: 20211225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |