CN106077396B - Spur gear wheel Vacuum Heat precision forging mold and processing method - Google Patents
Spur gear wheel Vacuum Heat precision forging mold and processing method Download PDFInfo
- Publication number
- CN106077396B CN106077396B CN201610710469.3A CN201610710469A CN106077396B CN 106077396 B CN106077396 B CN 106077396B CN 201610710469 A CN201610710469 A CN 201610710469A CN 106077396 B CN106077396 B CN 106077396B
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- die holder
- vacuum
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- housing
- lower die
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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
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
-
- 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
- B21J5/025—Closed die forging
-
- 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
- B21K1/00—Making machine elements
- B21K1/28—Making machine elements wheels; discs
- B21K1/30—Making machine elements wheels; discs with gear-teeth
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The present invention relates to spur gear wheel manufacture fields, more particularly, to a kind of spur gear wheel Vacuum Heat precision forging mold and processing method, including with lower component: a vacuum (-tight) housing；One electric heater unit；One forges into pattern, the excellent suitability for press forming mould includes upper die holder, core fixing plate, lower die holder, the core fixing plate upper end has a connecting column, the connecting column vertically upwardly extends, it is pierced by from the vacuum (-tight) housing upper end and couples with the upper die holder, the contact surface of the connecting column periphery and the vacuum (-tight) housing, which is equipped with, is slidingly sealed structure, and the vacuum (-tight) housing bottom is fixed on the lower die holder, and the two contact surface is equipped with air-tight structure；A plurality of cooling-water duct is provided in the lower die holder；One manipulator for heated gear blank to be put into type chamber, and takes finished work-piece away after forming.The present invention can improve the service life and gear precision forging forming quality of mold, and forming efficiency, precision and quality are improved, and significantly reduce excellent suitability for press forming power.
Description
Technical field
The present invention relates to spur gear wheel manufacture fields, more particularly, to a kind of spur gear wheel Vacuum Heat precision forging mould
Tool and technique.
Background technique
Gear is the precision component for being widely used in transmitting precise motion and power, it is desirable that high-precision, high-intensitive, high abrasion
Property, manufacturing process has machining, plasticity precision forging pressure processing, powder metallurgy formation etc..The heat essence of cylindric spiral gear
Forging forming process has many advantages such as high production efficiency, stock utilization height, the enhanced strength of gear, energy conservation, is advanced
Net forming technique.
The domestic and international existing hot precision forging of spur gear is to carry out hot finish forge or cold temperature study on precision forging technology in air,
Main purpose is to reduce excellent suitability for press forming power, improves material flowability, improves tooth form packed type chamber effect.But in air, by
It is heated in metal gear, is easy to produce oxide skin.It is crisp to aoxidize cortex, without extensibility, is acted under mechanical action with hot-working
Under, it is easy to it generates cracking and is detached from, seriously affect gear thermal precision forging quality and precision.
Summary of the invention
Place in order to overcome the deficiencies of the prior art, an object of the present invention are to provide a kind of spur gear wheel Vacuum Heat essence
Shaping dies is forged, to solve the above problems, it is a further object of the present invention to provide the processing methods of the mold.
The technical scheme adopted by the invention is that:
Spur gear wheel Vacuum Heat precision forging mould, comprising:
One has the vacuum (-tight) housing of bleeding point；
One is used for the electric heater unit of heat gear blank；
One excellent suitability for press forming mould, the excellent suitability for press forming mould include upper die holder, core fixing plate, lower die holder, and the type core is fixed
Plate upper end has a connecting column, which vertically upwardly extends, from the vacuum (-tight) housing upper end be pierced by and with it is described on
The contact surface of die holder connection, the connecting column periphery and the vacuum (-tight) housing, which is equipped with, is slidingly sealed structure, the vacuum (-tight) housing bottom
It fixes on the lower die holder, the two contact surface is equipped with air-tight structure；A plurality of cooling-water duct is provided in the lower die holder；
One manipulator, for heated gear blank to be put into the type chamber of the excellent suitability for press forming mould, and in the gear
Finished work-piece is taken away after the completion of blank molding.
Further, the electric heater unit includes an electromagnetism mid-frequency induction heating circle, the electromagnetism mid-frequency induction heating circle
It is fixed on the end of column, is equipped with thermal insulation layer therebetween, the internal diameter of the electromagnetism mid-frequency induction heating circle is greater than the tooth
Take turns the outer diameter of blank.The working principle of Intermediate Frequency Induction Heating Equipment is that metal cylinder blank has been placed on alternation electric current of intermediate frequency
In induction coil, metal cylinder is not contacted directly with induction coil, and hot-wire coil self-temperature is very low, and periphery can be with
Be heated to rubescent, or even fusing, and this rubescent and fusing speed as long as adjust frequency size and electric current it is strong and weak as long as
It is able to achieve.The device is with workpiece heating speed is fast, oxidation and decarbonization is few, high-efficient, forging quality is good, workpiece heated length, speed
The characteristics of degree, temperature etc. accurately control is very suitable to Vacuum Heat finish forge moulding process.
Further, the excellent suitability for press forming mould, including upper die holder, core fixing plate, connecting column, type core, cavity plate housing, floating
Cavity plate, cavity plate inner sleeve, punch-pin, punch retainer, lower die holder, the core fixing plate and type core are fixed on connecting column lower end, pass
The power from slide block of forging machine is passed, the connecting column upper end couples with upper die holder, and the punch-pin and punch retainer are mounted on down
On die holder；Knock-pin is equipped in the lower die holder, the knock-pin upper end passes through lower die holder and punch retainer, with the punch-pin
Bottom offsets, and the contact surface of the knock-pin periphery and the punch retainer, which is equipped with, is slidingly sealed structure, and the punch-pin is solid
Annular air-tight structure is equipped with by the center of circle of knock-pin on the contact surface of fixed board and lower die holder；The cavity plate housing, floating cavity die,
Cavity plate inner sleeve is successively nested, is fixed in floating cavity die fixed plate jointly, which is equipped with guide sleeve, with peace
The guide post of dress on the lower die holder is slidably matched, and the floating cavity die fixed plate is enable to move up and down along the guide post, described
Multiple groups reset spring is equipped between floating cavity die fixed plate and lower die holder；The cavity plate inner sleeve is corresponding up and down with the type core, and
It is slidably matched structure forming cavity with the punch-pin.
The excellent suitability for press forming mould uses floating cavity die structure.Floating cavity die block forging technology is to develop in recent years very
A kind of the characteristics of rapid precision plastic forming technology, the technology is first to occlude to forge afterwards, i.e., is first closed and is formed by upper lower cavity die
Closed type chamber, and apply certain mold clamping force on die joint, then by extruding punch from a direction or multiple directions pair
The metal stock for having been placed near closed hollow ring is squeezed, and the near net-shaped fine forge piece of non-trimming is obtained, and is very suitable to Vacuum Heat essence
Forging molding technique.
A kind of application method of spur gear wheel Vacuum Heat precision forging mould, has follow steps:
A. firstly, spur gear wheel Vacuum Heat precision forging mould is placed in vacuum (-tight) housing, the type core of the finishing die is solid
Fixed board upper end is equipped with a connecting column, which vertically upwardly extends, be pierced by and the forming from the vacuum (-tight) housing upper end
The upper die holder of mould connects, and the contact surface of the connecting column and the vacuum (-tight) housing, which is equipped with, is slidingly sealed structure, extracts institute with vacuum pump
The air stated in vacuum (-tight) housing forms vacuum state, then opens the gear electric heater unit, heat gear blank；
B. then heated gear blank picked up with the manipulator be put into the finishing die type it is intracavitary, forging and stamping
Machine sliding block moves down, and upper die holder, connecting column, core fixing plate and the type core being fixed on core fixing plate is pushed to move downwardly together
It is dynamic, make gear blank extrusion forming in the forming model chamber；
C. stop downlink when the slide block of forging machine reaches set distance, then the slide block of forging machine uplink, described in opening
The upper and lower mould of finishing die, the ejecting mechanism in the finishing die jack up formed spur gear wheel, and manipulator takes work away
Part；Meanwhile recirculated cooling water is conveyed by the cooling-water duct in the finishing die lower die holder, and cool down for the finishing die, it is complete
At a spur gear wheel Vacuum Heat precision forging.
The utility model has the advantages that can obviously reduce gear using Vacuum Heat finish forge spur gear wheel forming technology of the present invention
Forming force improves the forming mobility of metal material blank, improves tooth form packed type chamber effect, improves gear forming efficiency.Separately
Outside, due to there is no oxide skin appearance when forging forming, the mold and technique can improve mold service life and gear precision forging at
Form quality amount has the advantages that forming efficiency, precision and quality are high.
Detailed description of the invention
The invention will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the structural diagram of the present invention,
Fig. 2 is the position view of manipulator.
In figure: 1-upper die holder, 2-vacuum (-tight) housings, 3-core fixing plates, 4-floating cavity dies, 5-cavity plate housings, 6-are floated
Dynamic die block, 7-punch retainers, 8-lower die holders, 9-sealing rings, 10-connecting columns, 11-cooling-water ducts, 12-
Punch-pin, 13-knock-pins, 14-columns, 15-reset springs, 16-guide posts, 17-guide sleeves, 18-thermal insulation layers, in 19-electromagnetism
Frequency induction heating circle, 20-cavity plate inner sleeves, 21-molded gears, 22-type cores, 23-manipulators, 24-gear blanks.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In the description of the present invention, it is to be understood that, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown is merely for convenience of the description present invention, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Referring to Fig. 1,2, as shown, a kind of spur gear wheel Vacuum Heat finish forge shaping mould, comprising:
One has the vacuum (-tight) housing 2 of bleeding point；
One is used for the electric heater unit of heat gear blank；
One excellent suitability for press forming mould, excellent suitability for press forming mould include upper die holder 1, core fixing plate 3, lower die holder 8, on core fixing plate 3
End has a connecting column 10, and connecting column 10 is vertically upwardly extended, is pierced by from 2 upper end of vacuum (-tight) housing and affixed with upper die holder 1,
For the contact surface of 10 periphery of connecting column and vacuum (-tight) housing 2 at least provided with two layers of sealing ring 9,2 bottom of vacuum (-tight) housing is fixed on lower die holder 8
On, the two contact surface is equipped with sealing ring 9；A plurality of cooling-water duct 11 is provided in lower die holder 8；
One manipulator 23, for heated gear blank 24 to be put into the type chamber of extrusion forming mold, and in gear hair
Finished work-piece is taken away after the completion of base molding.
Further, electric heater unit includes an electromagnetism mid-frequency induction heating circle 19, and electromagnetism mid-frequency induction heating circle 19 is solid
Due to the end of a column 14, it is equipped with thermal insulation layer 18 therebetween, the internal diameter of electromagnetism mid-frequency induction heating circle 19 is greater than gear hair
The outer diameter of base 24.The working principle of electromagnetism mid-frequency induction heating circle 19 is gear blank 24 to be placed on the sense of alternation electric current of intermediate frequency
In should enclosing, gear blank 24 is not contacted directly with induction coil, and hot-wire coil self-temperature is very low, and periphery can be by
Be heated to rubescent, or even fusing, and this rubescent and fusing speed as long as adjust frequency size and electric current it is strong and weak as long as energy
It realizes.Device is with workpiece heating speed is fast, oxidation and decarbonization is few, high-efficient, forging quality is good, workpiece heated length, speed, temperature
The characteristics of degree etc. accurately controls, is very suitable to Vacuum Heat finish forge moulding process.
The preferred division of excellent suitability for press forming mould uses floating cavity die structure, including upper die holder 1, core fixing plate 3, connecting column
10, type core 22, lower die holder 8, cavity plate housing 5, floating cavity die 4, cavity plate inner sleeve 20, punch retainer 7, lower die holder 8, type core are fixed
Plate 3 and type core 22 are fixed on 10 lower end of connecting column, transmit the power from slide block of forging machine, and 10 upper end of connecting column and upper die holder 1 are solid
It connects, punch-pin 12 and punch retainer 7 are mounted on lower die holder 8；Knock-pin 13 is equipped in lower die holder 8, knock-pin 13 passes through lower die
Seat 8 and punch retainer 7, upper end offset with 12 bottom of punch-pin, and 13 periphery of knock-pin and the contact surface of punch retainer 7 are equipped with
Sealing ring 9 is equipped with for the center of circle with knock-pin 13 on the contact surface of sealing ring 9, punch retainer 7 and lower die holder 8；Cavity plate housing 5,
Floating cavity die 4, cavity plate inner sleeve 20 are successively nested, are fixed in floating cavity die fixed plate 6 jointly.6 side of floating cavity die fixed plate
Equipped with guide sleeve 17, guide sleeve 17 is slidably matched with the guide post 16 being mounted on lower die holder 8, makes floating cavity die fixed plate 6 can be along guide post
16 move up and down.Multiple groups reset spring 15 is equipped between floating cavity die fixed plate 6 and lower die holder 8；Cavity plate inner sleeve 20 and type core 22
Corresponding up and down, cavity plate inner sleeve 20 and punch-pin 12 are slidably matched structure forming cavity, and rest part is the prior art, is not chatted in detail
It states.Floating cavity die structure can obtain the near net-shaped fine forge piece of non-trimming, be very suitable to Vacuum Heat finish forge moulding process.
A kind of spur gear wheel Vacuum Heat study on precision forging technology, has follow steps:
A. firstly, above-mentioned spur gear wheel Vacuum Heat precision forging mould is placed in vacuum (-tight) housing 2, the type of the finishing die
3 upper end of core fixed plate is equipped with a connecting column 10, which vertically upwardly extends, wear from 2 upper end of vacuum (-tight) housing
It is connect out with the upper die holder of the finishing die 1, the contact surface of the connecting column 10 and the vacuum (-tight) housing 2 is equipped with sealing ring 9；Use vacuum
Pumping takes the air in the vacuum (-tight) housing 2 to form vacuum state, then opens electromagnetism mid-frequency induction heating circle 19, heat gear hair
Base 24；
B. then heated gear blank picked up with the manipulator 23 be put into the shaping mould type it is intracavitary, forging
Press slide moves down, and pushes the upper die holder 1, connecting column 10, core fixing plate 3 and type core 22 to move down, reset spring 15
It is compressed, while floating cavity die 4, floating cavity die fixed plate 6 also move down, makes gear blank 24 under pressure loading effect, metal
Material gradually flows, the extrusion forming in the type chamber being made of cavity plate inner sleeve 20 and punch-pin 12.
C. the mobile distance of control press machine, when reaching technical requirements size required for gear, the slide block of forging machine
Stop downlink when reaching set distance, the subsequent slide block of forging machine uplink opens the upper and lower mould of the finishing die, the finishing die
Interior knock-pin 13 pushes punch-pin 12, gear 21 formed in type chamber is jacked up, manipulator 23 takes formed gear 21 away；Together
When, recirculated cooling water is conveyed by a plurality of cooling-water duct 11 in the finishing die lower die holder 8, is cooled down for the finishing die,
Complete a spur gear wheel Vacuum Heat precision forging.Subsequent gear thermal precision forging, is recycled according to above procedure.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. spur gear wheel Vacuum Heat precision forging mould, it is characterised in that including with lower component:
One has the vacuum (-tight) housing of bleeding point；
One is used for the electric heater unit of heat gear blank；
One excellent suitability for press forming mould, the excellent suitability for press forming mould include upper die holder, core fixing plate, lower die holder, on the core fixing plate
End has a connecting column, which vertically upwardly extends, be pierced by from the vacuum (-tight) housing upper end and with the upper die holder
The contact surface of connection, the connecting column periphery and the vacuum (-tight) housing is equipped with and is slidingly sealed structure, and the vacuum (-tight) housing bottom is fixed
On the lower die holder, the two contact surface is equipped with air-tight structure；A plurality of cooling-water duct is provided in the lower die holder；
One manipulator, for heated gear blank to be put into the type chamber of the excellent suitability for press forming mould, and in the gear blank
Take finished work-piece after the completion of forming away.
2. spur gear wheel Vacuum Heat precision forging mould according to claim 1, it is characterised in that: the electric heater unit
Including an electromagnetism mid-frequency induction heating circle, which is fixed on the end of a column, is equipped with therebetween
Thermal insulation layer, the internal diameter of the electromagnetism mid-frequency induction heating circle are greater than the outer diameter of the gear blank.
3. spur gear wheel Vacuum Heat precision forging mould according to claim 1 or 2, it is characterised in that: described to forge into
Shape mould, including it is upper die holder, core fixing plate, connecting column, type core, lower die holder, cavity plate housing, floating cavity die, cavity plate inner sleeve, convex
Mould, punch retainer, lower die holder, the core fixing plate and type core are fixed on connecting column lower end, and transmitting comes from slide block of forging machine
Power, the connecting column upper end and upper die holder are affixed, the punch-pin and punch retainer installation on the lower die seat；The lower die holder
Interior to be equipped with knock-pin, the knock-pin upper end passes through lower die holder and punch retainer, offsets with the male bottom, the ejection
The contact surface of bar periphery and the punch retainer is equipped with and is slidingly sealed structure, contact of the punch retainer with lower die holder
Annular air-tight structure is equipped with by the center of circle of knock-pin on face；The cavity plate housing, floating cavity die, cavity plate inner sleeve are successively nested,
It is fixed in floating cavity die fixed plate jointly, which is equipped with guide sleeve, on the lower die holder with installation
Guide post be slidably matched, so that the floating cavity die fixed plate is moved up and down along the guide post, the floating cavity die fixed plate with
Multiple groups reset spring is equipped between lower die holder；The cavity plate inner sleeve is corresponding up and down with the type core, and matches with punch-pin sliding
Close structure forming cavity.
4. the application method of spur gear wheel Vacuum Heat precision forging mould described in a kind of claim 1, it is characterised in that have with
Lower step:
A. firstly, spur gear wheel Vacuum Heat precision forging mould is placed in vacuum (-tight) housing, the core fixing plate of the finishing die
Upper end is equipped with a connecting column, which vertically upwardly extends, be pierced by and the finishing die from the vacuum (-tight) housing upper end
The contact surface of upper die holder connection, the connecting column and the vacuum (-tight) housing, which is equipped with, is slidingly sealed structure, is extracted with vacuum pump described true
Air in sky cover forms vacuum state, then opens the gear electric heater unit, heat gear blank；
B. then heated gear blank picked up with the manipulator be put into the finishing die type it is intracavitary, forging press is sliding
Block moves down, and pushes upper die holder, connecting column, core fixing plate and the type core being fixed on core fixing plate to move downwardly together, makes
Gear blank excellent suitability for press forming in the forming model chamber；
C. stop downlink when the slide block of forging machine reaches set distance, the subsequent slide block of forging machine uplink opens the forming
The upper and lower mould of mould, the ejecting mechanism in the finishing die jack up formed spur gear wheel, and manipulator takes workpiece away；Together
When, recirculated cooling water is conveyed by the cooling-water duct in the finishing die lower die holder, is cooled down for the finishing die, is completed primary
Spur gear wheel Vacuum Heat precision forging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610710469.3A CN106077396B (en) | 2016-08-23 | 2016-08-23 | Spur gear wheel Vacuum Heat precision forging mold and processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610710469.3A CN106077396B (en) | 2016-08-23 | 2016-08-23 | Spur gear wheel Vacuum Heat precision forging mold and processing method |
Publications (2)
| Publication Number | Publication Date |
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| CN106077396A CN106077396A (en) | 2016-11-09 |
| CN106077396B true CN106077396B (en) | 2018-12-25 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825241A (en) * | 2017-01-26 | 2017-06-13 | 郝鑫颖 | A kind of wheel hub manufacturing equipment and manufacturing method of wheel hub |
| JP2019130539A (en) * | 2018-01-29 | 2019-08-08 | トヨタ自動車株式会社 | Forging device and forging method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3242702A1 (en) * | 1982-11-19 | 1984-05-24 | Robert Bosch Gmbh, 7000 Stuttgart | METHOD FOR PRODUCING A COMMUTATOR SEGMENT RING |
| CN1102144A (en) * | 1993-10-26 | 1995-05-03 | 青岛建筑工程学院 | Spur gear precision die stamping-push-press forming process and its equipment |
| CN1199747C (en) * | 2003-06-23 | 2005-05-04 | 北京科技大学 | Amorphous alloy precision parts superplastic drop-forging shaper and method thereof |
| CN2772679Y (en) * | 2005-01-05 | 2006-04-19 | 东风锻造有限公司 | Closed forging mould of disk piece |
| JP5080359B2 (en) * | 2008-05-29 | 2012-11-21 | コンドーセイコー株式会社 | Manufacturing method of hollow tooth profile parts |
| CN101905250B (en) * | 2010-05-31 | 2012-06-06 | 周家镳 | Chipless forming method for gear stick and section gear through hot extrusion |
| CN101972832B (en) * | 2010-11-19 | 2012-09-05 | 上海保捷汽车零部件锻压有限公司 | Detachable die precision forging die of reverse gear shaft of automatic gearbox of sedan |
| CN103990753B (en) * | 2014-05-22 | 2016-06-08 | 北京科技大学 | Oil pump gear axle precision forging mould and manufacturing process |
| CN206028628U (en) * | 2016-08-23 | 2017-03-22 | 合肥学院 | Hot finish forge forming die in cylinder straight -teeth gear vacuum |
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