CN108672644A - The high forging ratio piston seat proceeding closed fine forging method of construction machinery gear box - Google Patents
The high forging ratio piston seat proceeding closed fine forging method of construction machinery gear box Download PDFInfo
- Publication number
- CN108672644A CN108672644A CN201810420989.XA CN201810420989A CN108672644A CN 108672644 A CN108672644 A CN 108672644A CN 201810420989 A CN201810420989 A CN 201810420989A CN 108672644 A CN108672644 A CN 108672644A
- Authority
- CN
- China
- Prior art keywords
- piston seat
- finish forge
- cooling
- gear box
- construction machinery
- 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.)
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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
- B21K1/00—Making machine elements
- B21K1/18—Making machine elements pistons or plungers
-
- 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
- B21J1/04—Shaping in the rough solely by forging or pressing
-
- 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
- B21J5/002—Hybrid process, e.g. forging following casting
-
- 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
- B21J5/008—Incremental forging
-
- 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
Abstract
The present invention relates to a kind of piston seat forging methods, more particularly, to a kind of high forging ratio piston seat proceeding closed fine forging method of construction machinery gear box.Its piston seat for mainly solving present in the prior art needs the processes such as flat punching machine pier, Single arm processing, trimming in process, therefore machining processes are more, product mechanical performance is poor, and the consumption of material is larger, the weaker equal technical problem of fatigue resistance of product.The method of the present invention includes：Selection raw material bar is ground, and satisfactory length is cut into after flaw detection and carries out blanking；By bar, heating in medium frequency, progress punching press, pre-punching go out the shape of piston seat in heating device；It is put into electric screw press and carries out finish forge, when finish forge first heats piston seat, and electric screw press carries out finish forge for the first time, then piston seat is heated up again and is heated, carry out finish forge again, finally piston seat heats up again and heats, third time finish forge is carried out, is piston seat finished product after cooling.
Description
Technical field
The present invention relates to a kind of piston seat forging methods, more particularly, to a kind of high forging ratio piston of construction machinery gear box
Seat proceeding closed fine forging method.
Background technology
Piston seat is an important spare part of gearbox operational part peculiar to vessel, and workmanship will directly affect steamer
Normal operation.Chinese patent discloses a kind of piston seat and piston, internal combustion engine, compressor including the piston seat（It authorizes public
Announcement number：CN202451818U）Comprising ontology is provided through the circular hole of its thickness on the body, and referred to as smooth block is accommodating
Hole；At least one end of ontology is provided with the piston pin hole being connect with piston crown；It is both provided with guiding in the both sides of ontology
Side plate, each side plate that is oriented to extend to circular slider accommodation hole or less by one end of setting piston pin hole；Wherein, each guiding side
Plate is more than its rest part width corresponding to the width of the part of circular slider accommodation hole；It is being oriented to side end and piston seat ontology
Between be provided with reinforcing rib；Each guiding side plate length is enough that the piston seat is made to move back and forth in internal combustion engine or compressor block
When to top dead centre and lower dead center, the support of body is born at both ends；A kind of piston, including：Bizet, piston seat and piston
Pin；The side opposite with the top of bizet is provided with piston pin bore；Piston seat includes ontology, is provided through on the body
The circular hole of its thickness direction, referred to as circular slider accommodation hole；At least one end of ontology is provided with the work being connect with piston crown
Plug pin hole；It is both provided with guiding side plate in the both sides of ontology, each guiding side plate is extended to by piston seat piston pin hole one end
Below circular slider accommodation hole；Wherein, each side plate that is oriented to is more than its its remaining part corresponding to the width of the part of circular slider accommodation hole
Divide width；When assembly, piston pin is inserted into piston pin bore and piston pin hole, is one by bizet and piston seat fixing assembling
Body；A kind of internal combustion engine of circular slider-crank mechanism, including described piston before；A kind of compression of circular slider-crank mechanism
Machine, including described piston before.But this piston seat needs in process that punching machine pier is flat, Single arm processing, cuts
The processes such as side, therefore machining processes are more, product mechanical performance is poor, and the consumption of material is larger, the fatigue resistance of product
It is weaker.
Invention content
The present invention is to provide a kind of high forging ratio piston seat proceeding closed fine forging method of construction machinery gear box, is mainly
It solves the piston seat present in the prior art and needs the processes such as flat punching machine pier, Single arm processing, trimming in process, therefore
Machining processes are more, and product mechanical performance is poor, and the consumption of material is larger, and the weaker equal technology of fatigue resistance of product is asked
Topic.
The above-mentioned technical problem of the present invention is mainly to be addressed by following technical proposals：
The high forging ratio piston seat proceeding closed fine forging method of construction machinery gear box of the present invention, it is characterised in that the method
Including：
A. raw material bar is selected, the surface of bar is ground, satisfactory length is cut into after flaw detection and is carried out down
Material；
B. by bar in heating device heating in medium frequency to 700-750 DEG C, then by bar on blocking press machine in rush
Pressure, pre-punching go out the shape of piston seat；
C. it will be put into electric screw press by the blank of pre-punching and carry out finish forge, when finish forge first heats piston seat
To 800-850 DEG C, electric screw press carries out finish forge for the first time, piston seat is then heated to 900-950 DEG C again, electric screw
Forcing press carries out finish forge again, piston seat is finally heated to 1000-1050 DEG C again, electric screw press carries out third time essence
Forging is piston seat finished product after cooling.
The present invention can come to carry out mold design to high forging ratio piston seat forging in conjunction with forging simulation softward.The present invention exists
It is divided into the finish forge of different temperatures three times when finish forge, can gradually heats up in finish forge in this way, can allows in this way inside piston seat
Crystal structure gradually changes, and to ensure precision when finish forge, eliminates subsequent trimming.
Preferably, the heating device includes heating channel, the lower part for heating channel is equipped with heated transportation chain, adds
The top of the passage of heat is connected with several shafts, and several longitudinally disposed electric heating tubes, the outside of electric heating tube are connected in shaft
Equipped with case, it is provided with through-hole on case, heats the electric heating tube that undulate arrangement is distributed on the side wall in channel.Shaft rotates
Afterwards, electric heating tube can heat bar, and since electric heating tube is rotating, heating is more uniform, and due to side wall
On be distributed with undaform arrangement electric heating tube, therefore to the heating of bar be stage by stage, with temperature slight change, this
Sample can ensure that bar internal stress when being heated can have the leeway of buffering.
It is connected to the first bevel gear preferably, being worn in the shaft, the first bevel gear is engaged with the second bevel gear, owns
Second bevel gear road, which is worn, to be connected on transmission shaft, and axis connection driving motor is driven.Motor drives transmission shaft rotation, passes through the second umbrella
Gear, the first bevel gear drive more shaft rotations.Pass through a transmission shaft driven in this way, you can drive all shafts to rotate,
Transmission efficiency is higher.
Preferably, the electric screw press includes organic frame, upper rack is equipped with crossbeam, and crossbeam is equipped with pressure
Force motor, pressure motor are connected with screw rod, and screw rod lower end is connected with sliding block tup, and sliding block tup is slidably connected in guide rail, leads
Rail is connected in rack, and finish forge upper mold is fixed on the lower face of sliding block tup, and the lower part of rack is equipped with pedestal, and pedestal is equipped with
Finish forge lower die, the rack around finish forge lower die are equipped with a pair of of telescopic rod, every telescopic rod all connection liquid cylinder pressures, telescopic rod it is interior
Heat block of the end equipped with arc, the inner surface of heat block are equipped with the heating coil of several S types setting.The present invention by upper mold,
Increase heat block around lower die so that after upper mold rises, heat block can surround piston seat blank and be heated.The setting of S types
Heating coil can ensure the uniformity of heating.The mechanism heated three times is set up directly on electric screw press, such energy
Piston seat is enough reduced to take out and the step of being put into.Pressure motor is directly connected to screw rod, can increase transmission efficiency.
Preferably, the edge of the finish forge lower die is equipped with mounting groove, temperature detector, temperature inspection are equipped in mounting groove
It surveys device and hydraulic station, hydraulic station connection liquid cylinder pressure is connected by cnc mechanism.When temperature detector can sense heat block heating
Temperature change, can controlling hydraulic station by cnc mechanism in this way, whether driving hydraulic cylinder, telescopic rod work.
Preferably, the both sides of the rack are equipped with the arc vessel that can accommodate heat block, telescopic rod, which is worn, is connected on rack
On, the inner wall of arc vessel is equipped with graphite linings.When sliding block tup declines, heat block can be hidden in arc vessel, when
When needing heating, telescopic rod drives heat block to stretch out.Graphite linings can play the role of it is heat safe, to protect rack.
Preferably, the cooling after the finish forge carries out in cooling body, cooling body includes cooling duct, cold
But cooling carrier chain is equipped in channel, the bottom of cooling carrier chain is equipped with cooling water tank, and cooling water tank is three-stage, is equipped with therebetween
Thermal baffle, condenser pipe and temperature inductor are both provided in each section of cooling water tank, and the top of cooling carrier chain is equipped with cooling
The temperature of fan, three-stage cooling water tank is respectively set to 20-30 DEG C, 10-15 DEG C, 2-8 DEG C.By water cooling and air-cooled combination,
Cooling efficiency can be improved, and cooling water tank can connect circulating water pipe, absorbing the cooling water after heat in this way can also carry out
It recycles.Each section of cooling water tank can be controlled individually, after temperature inductor monitors temperature change, can pass through numerical control machine
Structure controls condenser pipe and adjusts temperature, to ensure to cheat effect but.
Therefore, the present invention reduces trimming technology than original process, reduces machining allowance, optimizes preforming work
Skill improves product mechanical performance and reduces the consumption of material, not only saves manpower and materials, and it is anti-to improve product
Fatigue strength.
Description of the drawings
Attached drawing 1 is a kind of structural schematic diagram of heating device of the present invention；
Attached drawing 2 is a kind of structural schematic diagram of electric screw press of the present invention；
Attached drawing 3 is a kind of structural schematic diagram of heat block of the present invention and arc vessel；
Attached drawing 4 is a kind of structural schematic diagram of heating coil of the present invention；
Attached drawing 5 is a kind of structural schematic diagram of cooling body of the present invention；
Attached drawing 6 is a kind of structural schematic diagram of inventive piston seat.
Parts, position and number in figure：It heats channel 1, heated transportation chain 2, shaft 3, electric heating tube 4, case 5, lead to
Hole 6, the first bevel gear 7, the second bevel gear 8, transmission shaft 9, driving motor 10, rack 11, crossbeam 12, pressure motor 13, screw rod
14, sliding block tup 15, guide rail 16, finish forge upper mold 17, pedestal 18, finish forge lower die 19, telescopic rod 20, hydraulic cylinder 21, heat block 22,
Heating coil 23, mounting groove 24, temperature detector 25, arc vessel 26, graphite linings 27, cooling duct 28, cooling carrier chain 29,
Cooling water tank 30, thermal baffle 31, condenser pipe 32, temperature inductor 33, cooling fan 34, piston seat 35.
Specific implementation mode
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment：The high forging ratio piston seat proceeding closed fine forging method of construction machinery gear box of this example, step are：
A. raw material bar is selected, the surface of bar is ground, satisfactory length is cut into after flaw detection and is carried out down
Material；
B. by bar, heating in medium frequency is to 750 DEG C in heating device, the then middle carry out punching press on blocking press machine by bar, in advance
Stamp out the shape of piston seat；Wherein heating device such as Fig. 1 includes heating channel 1, and the lower part for heating channel is defeated equipped with heating
Chain 2 is sent, the top for heating channel is connected with several shafts 3, and several longitudinally disposed electric heating tubes 4 are connected in shaft, and electricity adds
The outside of heat pipe is equipped with case 5, is provided with through-hole 6 on case, heats and the electricity of undulate arrangement is distributed on the side wall in channel adds
Heat pipe is worn in shaft and is connected to the first bevel gear 7, and the first bevel gear is engaged with the second bevel gear 8, and all second bevel gear roads are worn
It is connected on transmission shaft 9, transmission axis connection driving motor 10；
C. it will be put into electric screw press by the blank of pre-punching and carry out finish forge, when finish forge first heats piston seat
To 850 DEG C, electric screw press carries out finish forge for the first time, and piston seat is then heated to 950 DEG C again, electric screw press into
Piston seat is finally heated to 1050 DEG C by capable finish forge again again, and electric screw press carries out third time finish forge, is after cooling
Such as 35 finished product of Fig. 6 piston seats；Wherein electric screw press such as Fig. 2, including organic frame 11, upper rack is equipped with crossbeam 12, horizontal
Beam is equipped with pressure motor 13, and pressure motor is connected with screw rod 14, and screw rod lower end is connected with sliding block tup 15, the sliding of sliding block tup
It is connected in guide rail 16, guide rail is connected in rack, and finish forge upper mold 17, the lower part of rack are fixed on the lower face of sliding block tup
Equipped with pedestal 18, pedestal is equipped with finish forge lower die 19, and the rack around finish forge lower die is equipped with a pair of of telescopic rod 20, and every flexible
Bar all connection liquid cylinder pressures 21, the inner end of telescopic rod are equipped with the heat block 22 of arc, as the inner surface of Fig. 4, heat block are equipped with several S
The heating coil 23 of type setting, such as Fig. 3, the both sides of rack 11 are equipped with the arc vessel 26 that can accommodate heat block 22, and telescopic rod is worn
It is connected in rack, the inner wall of arc vessel is equipped with graphite linings 27, and the edge of finish forge lower die 18 is equipped with mounting groove 24, in mounting groove
Equipped with temperature detector 25, temperature detector connects hydraulic station, hydraulic station connection liquid cylinder pressure 25 by cnc mechanism.Cooling is cold
But it is carried out in mechanism, cooling body such as Fig. 5, includes cooling duct 28, cooling carrier chain 29 is equipped in cooling duct, cooling is defeated
The bottom of chain is sent to be equipped with cooling water tank 30, cooling water tank is three-stage, is equipped with thermal baffle 31 therebetween）, each section of cooling water tank
It is inside both provided with condenser pipe 32 and temperature inductor 33, the top of cooling carrier chain is equipped with cooling fan 34, three-stage cooling water tank
Temperature be respectively set to 25 DEG C, 10 DEG C, 5 DEG C.
Above is only a specific embodiment of the present invention, but the structure feature of the present invention is not limited thereto, Ren Heben
The technical staff in field in the field of the invention, made by changes or modifications all cover the present invention the scope of the claims among.
Claims (7)
1. a kind of high forging ratio piston seat proceeding closed fine forging method of construction machinery gear box, it is characterised in that the method packet
It includes：
A. raw material bar is selected, the surface of bar is ground, satisfactory length is cut into after flaw detection and is carried out down
Material；
B. by bar in heating device heating in medium frequency to 700-750 DEG C, then by bar on blocking press machine in rush
Pressure, pre-punching go out the shape of piston seat；
C. it will be put into electric screw press by the blank of pre-punching and carry out finish forge, when finish forge first heats piston seat
To 800-850 DEG C, electric screw press carries out finish forge for the first time, piston seat is then heated to 900-950 DEG C again, electric screw
Forcing press carries out finish forge again, piston seat is finally heated to 1000-1050 DEG C again, electric screw press carries out third time essence
Forging is piston seat finished product after cooling.
2. the high forging ratio piston seat proceeding closed fine forging method of construction machinery gear box according to claim 1, feature
It is that the heating device includes heating channel（1）, the lower part for heating channel is equipped with heated transportation chain（2）, heat channel
Top be connected with several shafts（3）, several longitudinally disposed electric heating tubes are connected in shaft（4）, the outside of electric heating tube
Equipped with case（5）, through-hole is provided on case（6）, heat the electric heating tube that undulate arrangement is distributed on the side wall in channel.
3. the high forging ratio piston seat proceeding closed fine forging method of construction machinery gear box according to claim 2, feature
It is the shaft（3）On wear and be connected to the first bevel gear（7）, the first bevel gear is engaged with the second bevel gear（8）, all second
Bevel gear road, which is worn, is connected on transmission shaft（9）On, it is driven axis connection driving motor（10）.
4. the high forging ratio piston seat proceeding closed fine forging method of construction machinery gear box according to claim 1, feature
It is that the electric screw press includes organic frame（11）, upper rack is equipped with crossbeam（12）, it is electric that crossbeam is equipped with pressure
Machine（13）, pressure motor is connected with screw rod（14）, screw rod lower end is connected with sliding block tup（15）, sliding block tup, which is slidably connected at, leads
Rail（16）Interior, guide rail is connected in rack, and finish forge upper mold is fixed on the lower face of sliding block tup（17）, the lower part of rack is equipped with
Pedestal（18）, pedestal is equipped with finish forge lower die（19）, the rack around finish forge lower die is equipped with a pair of of telescopic rod（20）, every is stretched
Contracting bar all connection liquid cylinder pressures（21）, the inner end of telescopic rod is equipped with the heat block of arc（22）, the inner surface of heat block is equipped with several S
The heating coil of type setting（23）.
5. the high forging ratio piston seat proceeding closed fine forging method of construction machinery gear box according to claim 4, feature
It is the finish forge lower die（18）Edge be equipped with mounting groove（24）, mounting groove is interior to be equipped with temperature detector（25）, temperature inspection
It surveys device and hydraulic station, hydraulic station connection liquid cylinder pressure is connected by cnc mechanism.
6. the high forging ratio piston seat proceeding closed fine forging method of construction machinery gear box according to claim 4, feature
It is the rack（11）Both sides be equipped with can accommodate heat block（22）Arc vessel（26）, telescopic rod（20）Wear the machine of being connected on
On frame, the inner wall of arc vessel is equipped with graphite linings（27）.
7. the high forging ratio piston seat proceeding closed fine forging method of construction machinery gear box according to claim 1, feature
It is that the cooling after the finish forge carries out in cooling body, cooling body includes cooling duct（28）, in cooling duct
Equipped with cooling carrier chain（29）, the bottom of cooling carrier chain is equipped with cooling water tank（30）, cooling water tank is three-stage, is equipped with therebetween
Thermal baffle（31）, condenser pipe is both provided in each section of cooling water tank（32）With temperature inductor（33）, cooling carrier chain
Top is equipped with cooling fan（34）, the temperature of three-stage cooling water tank is respectively set to 20-30 DEG C, 10-15 DEG C, 2-8 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810420989.XA CN108672644B (en) | 2018-05-04 | 2018-05-04 | The high forging ratio piston seat proceeding closed fine forging method of construction machinery gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810420989.XA CN108672644B (en) | 2018-05-04 | 2018-05-04 | The high forging ratio piston seat proceeding closed fine forging method of construction machinery gear box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108672644A true CN108672644A (en) | 2018-10-19 |
| CN108672644B CN108672644B (en) | 2019-11-19 |
Family
ID=63801877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201810420989.XA Active CN108672644B (en) | 2018-05-04 | 2018-05-04 | The high forging ratio piston seat proceeding closed fine forging method of construction machinery gear box |
Country Status (1)
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| CN103706744A (en) * | 2013-12-31 | 2014-04-09 | 海隆石油钻具（无锡）有限公司 | Petroleum drill rod joint horizontal die forging technology and die forging device |
| CN104907471A (en) * | 2015-05-13 | 2015-09-16 | 徐州徐工履带底盘有限公司 | Supporting wheel closed forging process and forging die |
| CN105081164A (en) * | 2015-08-12 | 2015-11-25 | 曹立新 | Method for achieving flash-free forging of blank of automotive front axle I beam |
| CN105081163A (en) * | 2015-08-12 | 2015-11-25 | 曹立新 | Method for achieving flash-free forging of forging blank |
| CN105397416A (en) * | 2015-12-01 | 2016-03-16 | 温州市研制阀门厂 | Forging method of valve |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101229572A (en) * | 2008-02-26 | 2008-07-30 | 中铁宝桥股份有限公司 | Moulding technology of tongue rail heeling of heavy haul railway |
| CN102896262A (en) * | 2012-09-06 | 2013-01-30 | 桐乡市隆盛精密机械有限公司 | Machining method of piston seat blank of high-silicon aluminum alloy piston |
| CN103056264A (en) * | 2012-12-06 | 2013-04-24 | 周卫星 | Closed cold-temperature precision forging die for straight-tooth bevel gear |
| CN103406482A (en) * | 2013-08-28 | 2013-11-27 | 哈尔滨工业大学 | Isothermal forging forming die and method for 7075 aluminum alloy tapered casing |
| CN103706744A (en) * | 2013-12-31 | 2014-04-09 | 海隆石油钻具（无锡）有限公司 | Petroleum drill rod joint horizontal die forging technology and die forging device |
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| CN105081164A (en) * | 2015-08-12 | 2015-11-25 | 曹立新 | Method for achieving flash-free forging of blank of automotive front axle I beam |
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| CN105397416A (en) * | 2015-12-01 | 2016-03-16 | 温州市研制阀门厂 | Forging method of valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108672644B (en) | 2019-11-19 |
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