CN109732032A - Marine low speed diesel engine connecting rod point end die-forging forming device and forming method - Google Patents
Marine low speed diesel engine connecting rod point end die-forging forming device and forming method Download PDFInfo
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- CN109732032A CN109732032A CN201910059098.0A CN201910059098A CN109732032A CN 109732032 A CN109732032 A CN 109732032A CN 201910059098 A CN201910059098 A CN 201910059098A CN 109732032 A CN109732032 A CN 109732032A
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- half module
- connecting rod
- right half
- diesel engine
- low speed
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- 238000005242 forging Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000000465 moulding Methods 0.000 claims abstract description 18
- 230000007704 transition Effects 0.000 claims abstract description 4
- 238000007373 indentation Methods 0.000 claims abstract description 3
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 10
- 238000001125 extrusion Methods 0.000 abstract description 4
- 230000033001 locomotion Effects 0.000 abstract description 4
- 238000007493 shaping process Methods 0.000 abstract 1
- 238000003754 machining Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 2
- 229920000914 Metallic fiber Polymers 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The present invention relates to a kind of marine low speed diesel engine connecting rod point end die-forging forming device and method, device is made of support frame, half module and opening and closing cylinder, jacking apparatus, guide pad, formed punch etc..A whole set of die forging device is installed on press platform by support frame lower plane, pacifies two jacking apparatus under support frame, and jacking vertical motion adjusts support base upper and lower position, to adapt to the connecting rod of different type of machines, while demoulding is completed after connecting rod extrusion forming.Half module opening and closing cylinder pushes and pulls half module, realizes the folding of half module.Guide pad is oriented to mould circle.When molding, half module is opened, and connecting rod blank needs fire end to lift in half module upward, is molded, and press pushes, and formed punch indentation needs fire end, while shaping the end concave surface, shapes transition face and shape；Connecting rod blank exits, more mold exchange, repeats the above process, and completes other end molding.The present invention carries out connecting rod two end molding in two times, the maching dimension of 10mm need to be only stayed after molding, technique auxiliary material is few, saves the time.
Description
Technical field
The present invention relates to a kind of marine low speed diesel engine connecting rod point end die-forging forming device and forming methods.
Background technique
Connecting rod of low-speed diesel engine is the main motion parts of marine low speed diesel engine, produces connecting rod hair using open die forging at present
Base.Under open die forging mode, blank needs a large amount of technique auxiliary materials；The spherical outside surface at connecting rod thickness end, thin end cone face, open die forging can not essences
Standard forges, and can only be swaged into fang platform rank marine low speed diesel engine connecting rod blank 9 as shown in Figure 2, then process and remove through subsequent mechanical
Material obtains required, as shown in Figure 3 marine low speed diesel engine connecting rod product 10.The thin end of connecting rod of low-speed diesel engine, thick end
Concave surface, open die forging can not forge, and open die forging can only all be swaged into solid, subsequent machining removal concave surface material, needed for obtaining
Concave surface.The technique auxiliary material of above-mentioned aspect is necessary technique auxiliary material under open die forging forging method, can not be overcome.For this purpose, causing
The huge waste of raw material also results in a large amount of subsequent machining, time-consuming and laborious.
Connecting rod of low-speed diesel engine complex contour, and open die forging precision itself is lower, therefore usually requires reserved 40-50mm machine
Machining allowance also results in time-consuming and laborious.
Open die forging produces connecting rod blank, machining removal material forming both ends shape and concave surface, has cut off metallic fiber,
The continuity for destroying forging tissue, weakens the internal soundness advantage of connecting rod rough forging, unfavorable to the usability and service life of connecting rod.
For small-sized connecting rod, such as connection rod of automobile engine, usually on drop press, full die-forging forming, that is, blank is put
Enter in upper and lower mold, die forging goes out entire connecting rod, and precision is high, high-efficient.Marine diesel connecting-rod is using similar with small rod complete
Die forging can not realize that reason is:
1. marine diesel connecting-rod weight is up to several tons, power needed for full die forging is very huge；
2. thin end and thick end thickness differ greatly, cause forming force difference huge, it is meant that will appear serious unbalance loading.
In short, marine low speed diesel engine connecting rod uses full die forging, all do not have in equipment aspect and technical aspect feasible
Property.
Summary of the invention
The purpose of the present invention is be directed to above-mentioned status, it is desirable to provide it is a kind of can point end die-forging forming thickness end and thin end shape with
And both ends concave surface, it is allowed to close with finished profile, reduces technique auxiliary material；Die forging accurate size can substantially reduce connecting rod blank
Machining allowance, substantially reduce marine low speed diesel engine connecting rod point end die-forging forming device and the molding side in machining working hour
Method.
The implementation of the object of the invention is marine low speed diesel engine connecting rod point end die-forging forming device, top surface of support frame
For cross space structure, a whole set of die forging device is installed on the platform of press by support frame lower plane by locating interface；Punching
Head is installed on the dynamic beam of press；Two half module opening and closing cylinders are respectively arranged in the two sides of plane on support frame, left and right half module peace
In on the top surface of support frame, two half module opening and closing cylinders are connect with left and right half module respectively, push left and right half module respectively, are realized
The folding of left and right half module；
The left and right half module of the thin left and right half module in end of the left and right half module point and thick end, left and right half module is to the composition that is bonded together
Complete die cavity, die cavity are consistent with the thin end of connecting rod product and thick end shape；Mould snare is outside the left and right half module being combined；Mould circle
It is cone match with left and right half module, angle is 2 ° -3 °；There are four cushion blocks outside mould circle bottom, and four cushion blocks on jacking apparatus by being filled
Four small oil tanks push；
The bottom of support frame, the support of jacking apparatus are installed on by the jacking apparatus that two jacking cylinders and support base form
Pacify mould oil cylinder out on seat, four guide pads being oriented to mould circle are installed on support frame.
With the forming method of marine low speed diesel engine connecting rod point end die-forging forming device, marine low speed diesel engine connecting rod blank
Thick end or thin end be heated to forging temperature in local heating furnace；
Left and right half module is opened, the thick end or thin end that marine low speed diesel engine connecting rod blank has heated upward, non-bringing-up section court
Under, it lifts among open left and right half module, jacking cylinder oscilaltion, adjusts the thick end heated or thin end and be in required
Behind position, left and right half module molding, mould circle lifting makes mould circle wale left and right half module；
Press moves beam and pushes, the thick end for having heated formed punch indentation marine low speed diesel engine connecting rod blank or Bao Duan, forming
While the end concave surface, transition face and shape are shaped；
After the completion of end office's portion's die forging, mould circle and left and right half module are in locking state, push up on jacking cylinder, outer ring is connected
It with left and right half module, the molding connecting rod blank in one end is completed jacks up together, four small oil tanks push four cushion blocks to extend into mould circle
Bottom, mould circle are fallen on four cushion blocks, and press drives formed punch to be pressed downward, and mould circle is forced to separate with left and right half module；
Four small oil tanks retract, and after mould circle and the release of left and right half module, formed punch is risen, and removes mould circle；Half module opening and closing cylinder opens
Dynamic, left and right half module is pulled apart slightly, and the marine low speed diesel engine connecting rod blank of the molded one end of bottom oil cylinder supporting rises, by big
Forging tongs is clamped, and left and right half module is fully withdrawn, and is hung out, and the mould at marine low speed diesel engine connecting rod blank thickness end or thin end is completed
Forging；
Then more mold exchange, repeats the above process, and carries out thin end or thickness that marine low speed diesel engine connecting rod blank has heated
The die forging at end forms marine low speed diesel engine connecting rod product.
The present invention by the thick end die-forging forming and Bao Duan die-forging forming process of marine low speed diesel engine connecting rod, in two times into
Row need to only reserve the maching dimension of 10mm, reduce technique auxiliary material, save the machining time in later period after molding.
Detailed description of the invention
Fig. 1 is forming device structure schematic diagram of the invention；
Fig. 2 is connecting rod blank structure schematic diagram involved in molding machine of the present invention；
Fig. 3 is the schematic diagram of product structure after connecting rod die-forging forming involved in molding machine of the present invention；
Fig. 4 is the support frame structure diagram of molding machine of the present invention；
Fig. 5, Fig. 6 are the left and right half module and half module opening and closing cylinder installation status diagram of molding machine of the present invention.
Fig. 7 is die-forging forming state diagram of the invention.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings.
Referring to Fig.1,4,1 top surface of support frame of molding machine of the present invention is cross space structure, realizes mold on it
Forming force is carried, realizes mould open/close, guiding when folding, and it is empty to reserve blank disengaging.Support frame lower plane passes through positioning
A whole set of die forging device is installed on the platform of press by interface.Formed punch 8 is installed on the dynamic beam of press.Mold is that the applicant is same
" for a point mold for end die forging marine low speed diesel engine connecting rod " filed in day, mold is made of left and right half module.
Two half module opening and closing cylinders 2 are respectively arranged in the two sides of plane on support frame, and left and right half module 5 is satisfied with support frame
On top surface, two half module opening and closing cylinders 2 are connect with left and right half module respectively, push left and right half module respectively, realize left and right half module
Folding, so that end die forging connecting rod two end is divided to be achieved respectively.
The left and right half module of the thin left and right half module in end of the left and right half module point and thick end, left and right half module is to the composition that is bonded together
Complete die cavity, die cavity are consistent with the thin end of connecting rod product and thick end shape.4 sets of mould circle outside the left and right half module being combined, form
Complete die cavity.Mould circle blocks left and right half module, for resisting the cross force generated in forming process, so that two half modules are kept
Molding state stablizes dress state to guarantee that left and right half module is in always during connecting rod extrusion forming.
Mould circle 4 and left and right half module are cone match, and mould circle and half module realize friction self-locking in die-forging forming loading process,
Enable mould circle two half modules of locking completely, is unlikely to unclamp；And because the conical surface exists when demoulding, mould can be made by slightly applying vertical pressure
Circle is detached from.Mould circle and left and right half module are that the taper of cone match is preferably 2 ° -3 °.
There are four cushion block 7 outside mould circle bottom, four cushion blocks are pushed by four small oil tanks filled on jacking apparatus.Four cushion blocks
In connecting rod extrusion forming, it is extend into mould circle bottom by four small oil tank promotions after jacking, four small oil tanks retract, and mould circle falls in four
On a cushion block, press continues to complete primary extruding movement, realizes the disengaging of mould circle and left and right half module.
The bottom of support frame 1 is installed on by the jacking apparatus 3 that two jacking cylinders and support base form, jacking apparatus 3
Pacify mould oil cylinder out on support base, two jacking cylinder vertical motions adjust the upper and lower position of support base, to adapt to different type of machines
Connecting rod of low-speed diesel engine, while after connecting rod extrusion forming, demoulding is realized on top on two jacking cylinders.Mould circle is oriented to
Four guide pads 6 are installed on support frame, are made in mould circle installation process in steady state.
Referring to Fig. 4,5, support frame is casting, integral cast molding.Support frame supports left and right half module and mould circle 4, makes to divide
The connecting rod of low-speed diesel engine blank 9 of end die-forging forming is suspended in the die cavity that left and right half module is combined into, and becoming partial plastic forming can
Energy；And vertical pressure is born in local die-forging forming.
With the forming method of marine low speed diesel engine connecting rod point end die-forging forming device, marine low speed diesel engine connecting rod blank
The thick end or thin end of 9 (see Fig. 2) is heated to forging temperature in the local heating furnace that the applicant applies on the same day, in heating process
In control the heat affected area of marine low speed diesel engine connecting rod bar portion as far as possible, so that deformation is concentrated mainly on thick end or the both ends Bao Duan and mistake
Cross face.
Left and right half module 5 opens (see Fig. 5), the thick end or thin end that marine low speed diesel engine connecting rod blank has heated upward, not
Bringing-up section downward, lifts among open left and right half module, and jacking cylinder is gone up and down above and below, adjusts the thick end heated or Bao Duan
Behind required position, left and right half module molds (see Fig. 6), and mould circle 4 lifts, and wales left and right half module.
Press moves beam and pushes, and formed punch 8 is made to be pressed into the thick end or Bao Duan that marine low speed diesel engine connecting rod blank has heated, forming
While the concave surface at the end, shape transition face and shape (see Fig. 7).
After the completion of end office's portion's die forging, mould circle and left and right half module are in locking state, push up on jacking cylinder, outer ring is connected
It with left and right half module, the molding connecting rod blank in one end is completed jacks up together, four small oil tanks push four cushion blocks to extend into mould circle
Bottom, mould circle are fallen on four cushion blocks, and press drives formed punch to be pressed downward, and mould circle 4 is forced to separate with left and right half module.
Four small oil tanks retract, and after mould circle and the release of left and right half module, formed punch is risen, and removes mould circle；Half module opening and closing cylinder opens
Dynamic, left and right half module is pulled apart slightly, and the marine low speed diesel engine connecting rod blank of the molded one end of bottom oil cylinder supporting rises, by
The heavy forging tongs that the applicant applies on the same day is clamped, and left and right half module is fully withdrawn, and is hung out, and is completed marine low speed diesel engine and is connected
The die forging at bar blank thickness end or thin end；
Then more mold exchange, repeats the above process, and carries out thin end or thickness that marine low speed diesel engine connecting rod blank has heated
The die forging at end forms marine low speed diesel engine connecting rod product 10 as shown in Figure 3.
The thick end of marine low speed diesel engine connecting rod and thin end die-forging forming process are divided end to carry out by the present invention in two times, at
The maching dimension that 10mm need to be only reserved after type, reduces technique auxiliary material, saves the machining time in later period.
Claims (3)
1. marine low speed diesel engine connecting rod point end die-forging forming device, it is characterised in that: top surface of support frame is cross space knot
A whole set of die forging device is installed on the platform of press by structure, support frame lower plane by locating interface；Formed punch is installed on press
On dynamic beam；Two half module opening and closing cylinders are respectively arranged in the two sides of plane on support frame, and left and right half module is satisfied with the top surface of support frame
On, two half module opening and closing cylinders are connect with left and right half module respectively, push left and right half module respectively, realize the folding of left and right half module；
The left and right half module of the thin left and right half module in end of the left and right half module point and thick end, left and right half module form completely to being bonded together
Die cavity, die cavity are consistent with the thin end of connecting rod product and thick end shape；Mould snare is outside the left and right half module being combined；Mould circle and it is left,
Right half module is cone match；There are four cushion block outside mould circle bottom, four cushion blocks are pushed by four small oil tanks filled on jacking apparatus；
The bottom of support frame is installed on by the jacking apparatus that two jacking cylinders and support base form, on the support base of jacking apparatus
Pacify mould oil cylinder out, four guide pads being oriented to mould circle are installed on support frame.
2. marine low speed diesel engine connecting rod according to claim 1 point end die-forging forming device, it is characterised in that: mould circle with
Left and right half module is that the taper of cone match is 2 ° -3 °.
3. with the method for marine low speed diesel engine connecting rod described in claim 1 point end die-forging forming device, it is characterised in that:
The thick end or thin end of marine low speed diesel engine connecting rod blank are heated to forging temperature in local heating furnace；
Left and right half module is opened, the thick end or thin end that marine low speed diesel engine connecting rod blank has heated upward, non-bringing-up section downward,
It lifts among open left and right half module, jacking cylinder oscilaltion, adjusts the thick end heated or thin end is in required position
Afterwards, left and right half module molding, the lifting of mould circle make mould circle wale left and right half module；
Press moves beam and pushes, and the thick end for having heated formed punch indentation marine low speed diesel engine connecting rod blank or Bao Duan shape the end
While concave surface, transition face and shape are shaped；
After the completion of the end die forging of the end point, mould circle and left and right half module be in locking state, push up on jacking cylinder, by outer ring together with a left side,
Right half module is completed the molding connecting rod blank in one end and jacks up together, and four small oil tanks push four cushion blocks to extend into mould circle bottom,
Mould circle is fallen on four cushion blocks, and press drives formed punch to be pressed downward, and mould circle is forced to separate with left and right half module；
Four small oil tanks retract, and after mould circle and the release of left and right half module, formed punch is risen, and removes mould circle；The starting of half module opening and closing cylinder,
Left and right half module is pulled apart slightly, and the marine low speed diesel engine connecting rod blank of the molded one end of bottom oil cylinder supporting rises, by heavy forging
Tongs is clamped, and left and right half module is fully withdrawn, and is hung out, and the die forging at marine low speed diesel engine connecting rod blank thickness end or thin end is completed；
Then more mold exchange, repeats the above process, and carries out the thin end heated of marine low speed diesel engine connecting rod blank or thick end
Die forging forms marine low speed diesel engine connecting rod product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910059098.0A CN109732032B (en) | 2019-01-22 | 2019-01-22 | Marine low-speed diesel engine connecting rod split end die forging forming device and forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910059098.0A CN109732032B (en) | 2019-01-22 | 2019-01-22 | Marine low-speed diesel engine connecting rod split end die forging forming device and forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109732032A true CN109732032A (en) | 2019-05-10 |
| CN109732032B CN109732032B (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910059098.0A Active CN109732032B (en) | 2019-01-22 | 2019-01-22 | Marine low-speed diesel engine connecting rod split end die forging forming device and forming method |
Country Status (1)
| Country | Link |
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| CN (1) | CN109732032B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB620168A (en) * | 1946-09-05 | 1949-03-21 | Sydney Erskine Murray | Improved means for the manufacture of articles by upsetting a heated bar |
| JPH02137635A (en) * | 1988-11-18 | 1990-05-25 | Honda Motor Co Ltd | Full enclosed die forging method |
| CN101293267A (en) * | 2008-05-23 | 2008-10-29 | 江阴风电法兰制造有限公司 | Continuous upsetting method for large flange at axle end of large-scale wind power principal axle |
| CN104525599A (en) * | 2014-12-17 | 2015-04-22 | 浙江名将汽配有限公司 | Cold extrusion mold for output shafts and preparation method thereof |
| CN106583484A (en) * | 2017-01-26 | 2017-04-26 | 郝鑫颖 | Wheel hub manufacturing device and method |
| CN207547510U (en) * | 2017-12-18 | 2018-06-29 | 张家港市环鑫精密锻造有限公司 | The blanking device of automobile connecting bar |
| CN209681051U (en) * | 2019-01-22 | 2019-11-26 | 武汉重工铸锻有限责任公司 | Marine low speed diesel engine connecting rod point end die-forging forming device |
-
2019
- 2019-01-22 CN CN201910059098.0A patent/CN109732032B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB620168A (en) * | 1946-09-05 | 1949-03-21 | Sydney Erskine Murray | Improved means for the manufacture of articles by upsetting a heated bar |
| JPH02137635A (en) * | 1988-11-18 | 1990-05-25 | Honda Motor Co Ltd | Full enclosed die forging method |
| CN101293267A (en) * | 2008-05-23 | 2008-10-29 | 江阴风电法兰制造有限公司 | Continuous upsetting method for large flange at axle end of large-scale wind power principal axle |
| CN104525599A (en) * | 2014-12-17 | 2015-04-22 | 浙江名将汽配有限公司 | Cold extrusion mold for output shafts and preparation method thereof |
| CN106583484A (en) * | 2017-01-26 | 2017-04-26 | 郝鑫颖 | Wheel hub manufacturing device and method |
| CN207547510U (en) * | 2017-12-18 | 2018-06-29 | 张家港市环鑫精密锻造有限公司 | The blanking device of automobile connecting bar |
| CN209681051U (en) * | 2019-01-22 | 2019-11-26 | 武汉重工铸锻有限责任公司 | Marine low speed diesel engine connecting rod point end die-forging forming device |
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| Publication number | Publication date |
|---|---|
| CN109732032B (en) | 2024-04-19 |
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