CN103100570A - Openable crank extrusion device and forming method of large marine crankshaft crank - Google Patents
Openable crank extrusion device and forming method of large marine crankshaft crank Download PDFInfo
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- CN103100570A CN103100570A CN2011103600687A CN201110360068A CN103100570A CN 103100570 A CN103100570 A CN 103100570A CN 2011103600687 A CN2011103600687 A CN 2011103600687A CN 201110360068 A CN201110360068 A CN 201110360068A CN 103100570 A CN103100570 A CN 103100570A
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- crank throw
- open
- pressurizing unit
- close type
- type crank
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Abstract
The invention discloses an openable crank extrusion device which comprises beams, vertical columns, perpendicular sliding blocks, connecting rod devices and horizontal sliding blocks, wherein the beams are respectively arranged on the two sides of a base plate and are fixedly connected with each other through a plurality of vertical columns; the inner sides of the beams are movably connected with the perpendicular sliding blocks which are movably connected with the horizontal sliding blocks through the connecting rod devices; the horizontal sliding blocks are connected with edge dies; bottom dies are fixedly arranged on the base plate between the two edge dies; the two edge dies and the bottom dies form an extrusion cavity; the bottoms of the perpendicular sliding blocks are connected with perpendicular cylinders; and the outer sides of the horizontal sliding blocks are connected with the beams through horizontal cylinders. The openable crank extrusion device can realize automatic demolding, has a high continuation degree and is easy to operate. By virtue of the openable crank extrusion device, the machining allowance is greatly reduced, and the utilization rate of materials is improved. A large marine crankshaft crank formed by the openable crank extrusion device is high in metal streamline form, dense in tissue and high in mechanical property. The invention also discloses a forming method of the large marine crankshaft crank with the openable crank extrusion device.
Description
Technical field
The present invention relates to a kind of extrusion molding apparatus, be specifically related to a kind of open-close type crank throw pressurizing unit.The invention still further relates to a kind of manufacturing process that adopts the crankshaft used for large boat crank throw of open-close type crank throw pressurizing unit.
Background technology
The power output of large-scale marine engine is general over 10000 horsepowers.In this engine, the crank throw that is used for built-up crankshaft is very large.The manufacture difficulty of this Large Crankshaft crank throw is very large.
The forging method of existing Large Crankshaft crank throw has following several:
The first, piece type forging method; The forming process of piece type forging method becomes a corner angle square with the crank throw blank forging as shown in Figure 1.The advantage of this method is: simple shape, be shaped easily, and need not mould, forging times is few; Crank throw surplus with this method forging can suitably be dwindled, and the connecting rod position of centre is cut off eliminate, then machined is shaped.The shortcoming of this method is: the fibr tissue of crank throw forged steel pieces is cut off in the centre, and is discontinuous, can be influential to serviceability.
The second, the ring rolling method; The forming process of ring rolling method first forges U-shaped blank with hollow steel ingot or through the steel loop of punching as shown in Figure 2, then extrudes the tapering on blank two sides, then makes blank forming by the vertical blank with a die forging piece.The shortcoming of this method is: the difficulty that is shaped, and complex process, stock utilization and formability are relatively poor, also may occur the defectives such as pore in forging.
The third, die forging; At first the forming process of die forging is pressed into block blank to steel ingot by chamfered edge, jumping-up as shown in Figure 3, then it is put in die cavity, cover pressure die, suppress with hydraulic press, the defectives such as further compacting steel ingot internal defect, be pressed at last drift and rive, make it to be configured as left and right arms.The shortcoming of this method is: equipment tonnage is large, operating difficulties, and the later stage demoulding is difficult.
The 4th kind, curved forging method; The forming process of curved forging method first manufactures and singly turns the shape blank as shown in Figure 4, and then crooked on crooked mould bases, finishing touch is shaped.The shortcoming of this method is: qualification rate is low, and energy consumption is high, and cost is high.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of open-close type crank throw pressurizing unit, and it can realize automatic demoulding.
For solving the problems of the technologies described above, the technical solution of open-close type crank throw pressurizing unit of the present invention is:
Comprise crossbeam, column, vertical slipper, linkage, cross sliding clock, the both sides of base plate are respectively arranged with crossbeam, are fixedly connected with by many root posts between two crossbeams; The inboard of crossbeam is flexibly connected vertical slipper, and vertical slipper is flexibly connected by linkage and cross sliding clock; Be fixedly installed bed die on base plate between cross sliding clock fillet mould, two limit moulds, two limit moulds and bed die form the extruding die cavity; The bottom of described vertical slipper connects vertical cylinder, and the outside of described cross sliding clock is by the horizontal cylinder connecting cross beam.
One side of described vertical slipper is provided with locking cylinder.
Be connected by track between described crossbeam and base plate.
Be provided with positioner on described base plate, be used for base plate is fixed on travelling table.
Described cross sliding clock connects column by guided way.
Described vertical slipper is flexibly connected by gathering sill and crossbeam.
The present invention also provides a kind of manufacturing process of crankshaft used for large boat crank throw, adopts open-close type crank throw pressurizing unit, is used for forging the crankshaft used for large boat crank throw that overall dimensions are not less than 700mm * 1000mm * 2000mm, comprises the following steps:
The first step, base; Steel ingot is pressed into the square blank;
Second step is placed in the square blank on open-close type crank throw pressurizing unit;
The extruding die cavity of open-close type crank throw pressurizing unit is preheated to 300～350 ℃, makes two limit moulds separately, the extruding die cavity is in the open type state, and the square blank that heats is put into the extruding die cavity;
Two limit moulds are drawn close mutually to clamping square blank, fixed press die cavity; The compacting patrix is put into the extruding die cavity;
In the 3rd step, adopt open-close type crank throw pressurizing unit that the square blank is pushed;
The open-close type crank throw pressurizing unit that the square blank is housed is placed on travelling table, and by travelling table, open-close type crank throw pressurizing unit is moved into hydraulic press, by hydraulic press, the compacting patrix is depressed, the square blank is pressed in bed die, until blank is full of the extruding die cavity;
In the 4th step, form radius bar;
By travelling table, open-close type crank throw pressurizing unit is shifted out hydraulic press, hang out the compacting patrix, and stamping knife is connected with press; By travelling table, open-close type crank throw pressurizing unit is moved into hydraulic press, by hydraulic press, stamping knife is depressed, make press depress the degree of depth backed off after random stamping knife of regulation, thereby form two radius bars;
The 5th step drove two limit moulds and separates, and hung out workpiece;
In the 6th step, make workpiece advance the furnace treatment reason.
The technique effect that the present invention can reach is:
The present invention can realize fast demoulding, thereby shortens the manufacturing cycle of product, and operation is short, and efficient is high.
The present invention can realize automatic demoulding, and the serialization degree is high, and is simple to operate.
The present invention can reduce machining allowance greatly, improves the utilization rate of material.
The metal flow linearity of the crankshaft used for large boat crank throw of manufacturing of the present invention is good, dense structure, good mechanical property.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments:
Fig. 1 is the schematic diagram of the forming process of prior art piece type forging method;
Fig. 2 is the schematic diagram of the forming process of prior art ring rolling method;
Fig. 3 is the schematic diagram of the forming process of prior art die forging;
Fig. 4 is the schematic diagram of the forming process of the curved forging method of prior art;
Fig. 5 is the schematic diagram of open-close type crank throw pressurizing unit of the present invention;
Fig. 6 is the top view of Fig. 5;
Fig. 7 is the side view of Fig. 5;
Fig. 8 is the schematic diagram of compacting patrix of the present invention;
Fig. 9 is the schematic diagram of square blank;
Figure 10 is the side view of Fig. 9;
Figure 11 is the schematic diagram of the made workpiece of the manufacturing process that adopts crankshaft used for large boat crank throw of the present invention;
Figure 12 is the side view of Figure 11;
Figure 13 is the schematic diagram of crankshaft used for large boat crank throw;
Figure 14 is the side view of Figure 13.
Description of reference numerals in figure:
1 is base plate, and 2 is crossbeam,
3 is vertical cylinder, and 4 is linkage,
5 is column, and 6 is locking cylinder,
7 is cross sliding clock, and 8 is vertical slipper,
9 is horizontal cylinder, and 10 is the limit mould,
11 is bed die.
The specific embodiment
The manufacturing process of crankshaft used for large boat crank throw of the present invention adopts open-close type crank throw pressurizing unit, is used for forging as Figure 13, crankshaft used for large boat crank throw shown in Figure 14, and the overall dimensions of crank throw are not less than 700mm * 1000mm * 2000mm, comprise the following steps:
The first step, base; By chamfered edge, jumping-up, pulling, steel ingot is pressed into satisfactory square blank, as Fig. 9, shown in Figure 10;
Second step is placed in the square blank on open-close type crank throw pressurizing unit;
Open-close type crank throw pressurizing unit such as Fig. 5 comprise crossbeam 2, column 5, vertical slipper 8, linkage 4, cross sliding clock 7 to shown in Figure 7, and the both sides of base plate 1 are respectively arranged with between 2, two crossbeams 2 of crossbeam and are fixedly connected with by four root posts 5; The inboard of crossbeam 2 is flexibly connected vertical slipper 8, and vertical slipper 8 is flexibly connected by linkage 4 and cross sliding clock 7; Cross sliding clock 7 fillet moulds 10; Be fixedly installed bed die 11 on base plate 1 between two limit moulds 10; Two limit moulds 10 form the extruding die cavity with bed die 11;
The bottom of vertical slipper 8 connects vertical cylinder 3, and a side of vertical slipper 8 is provided with locking cylinder 6; The outside of cross sliding clock 7 is by horizontal cylinder 9 connecting cross beams 2; Vertical cylinder 3 is arranged on base plate 1;
Be connected by track between crossbeam 2 and base plate 1, crossbeam 2 can be with respect to base plate 1 fine motion.
Be provided with positioner on base plate 1, can be fixed on travelling table.
The operation principle of open-close type crank throw pressurizing unit is:
Drive vertical slipper 8 by vertical cylinder 3 and move up, the mobile of vertical slipper 8 drives linkage 4 activities, thereby drives cross sliding clock 7 to right translation, makes two limit moulds 10 separately, and be placed on workpiece on bed die 11 this moment;
Drive vertical slipper 8 by vertical cylinder 3 and move down, drive cross sliding clock 7 to left by horizontal cylinder 9, make two limit moulds 10 close, until with Workpiece clamping; Lock vertical slipper 8 by locking cylinder 6 this moment.
The extruding die cavity of open-close type crank throw pressurizing unit is preheated to 300～350 ℃,, drive two cross sliding clocks 7 and oppositely move vertical slipper 8 jack-up by vertical cylinder 3, make two limit moulds 10 separately, the extruding die cavity is in the open type state, and the square blank that heats is put into the extruding die cavity;
Make vertical cylinder 3 backhauls, by horizontal cylinder 9, cross sliding clock 7 levels are ejected, two limit moulds 10 are drawn close mutually to clamping the square blank, by locking cylinder 6, vertical slipper 8 is locked with the fixed press die cavity; The compacting patrix is put into the extruding die cavity;
In the 3rd step, adopt open-close type crank throw pressurizing unit that the square blank is pushed;
The open-close type crank throw pressurizing unit that the square blank is housed is placed on travelling table, and by travelling table, open-close type crank throw pressurizing unit is moved into hydraulic press, by hydraulic press, the compacting patrix is depressed, the square blank is pressed in bed die 11, until blank is full of the extruding die cavity;
As shown in Figure 8, because the bottom of compacting patrix is arc, in compacting process, be subjected to the restriction of mold shape, crank throw upper arm end is pressed into arc, simultaneously also one-shot forming of crank cotter pin, thereby can greatly improve mechanical performance, reduce machine-finish allowance, improve the utilization rate of material.
In the 4th step, form radius bar;
By travelling table, open-close type crank throw pressurizing unit is shifted out hydraulic press, hang out the compacting patrix, and stamping knife is connected with press; By travelling table, open-close type crank throw pressurizing unit is moved into hydraulic press, by hydraulic press, stamping knife is depressed, make press depress the degree of depth backed off after random stamping knife of regulation, thereby form two radius bars, form as Figure 11, workpiece shown in Figure 12;
The 5th step, unclamp locking cylinder 6,, drive two limit moulds 10 and separate vertical slipper 8 jack-up by vertical cylinder 3, hang out workpiece;
In the 6th step, make workpiece advance the furnace treatment reason.
The present invention can produce the crankshaft used for large boat crank throw of various types.
Claims (7)
1. open-close type crank throw pressurizing unit, it is characterized in that, described open-close type crank throw pressurizing unit comprises crossbeam, column, vertical slipper, linkage, cross sliding clock, and the both sides of base plate are respectively arranged with crossbeam, is fixedly connected with by many root posts between two crossbeams; The inboard of crossbeam is flexibly connected vertical slipper, and vertical slipper is flexibly connected by linkage and cross sliding clock; Be fixedly installed bed die on base plate between cross sliding clock fillet mould, two limit moulds, two limit moulds and bed die form the extruding die cavity; The bottom of described vertical slipper connects vertical cylinder, and the outside of described cross sliding clock is by the horizontal cylinder connecting cross beam.
2. open-close type crank throw pressurizing unit according to claim 1, is characterized in that, a side of described vertical slipper is provided with locking cylinder.
3. open-close type crank throw pressurizing unit according to claim 1, is characterized in that, is connected by track between described crossbeam and base plate.
4. open-close type crank throw pressurizing unit according to claim 1, is characterized in that, is provided with positioner on described base plate, is used for base plate is fixed on travelling table.
5. open-close type crank throw pressurizing unit according to claim 1, is characterized in that, described cross sliding clock connects column by guided way.
6. open-close type crank throw pressurizing unit according to claim 1 or 5, is characterized in that, described vertical slipper is flexibly connected by gathering sill and crossbeam.
7. the manufacturing process of a crankshaft used for large boat crank throw, is characterized in that, adopts open-close type crank throw pressurizing unit claimed in claim 1, is used for forging the crankshaft used for large boat crank throw that overall dimensions are not less than 700mm * 1000mm * 2000mm, comprises the following steps:
The first step, base; Steel ingot is pressed into the square blank;
Second step is placed in the square blank on open-close type crank throw pressurizing unit;
The extruding die cavity of open-close type crank throw pressurizing unit is preheated to 300～350 ℃, makes two limit moulds separately, the extruding die cavity is in the open type state, and the square blank that heats is put into the extruding die cavity;
Two limit moulds are drawn close mutually to clamping square blank, fixed press die cavity; The compacting patrix is put into the extruding die cavity;
In the 3rd step, adopt open-close type crank throw pressurizing unit that the square blank is pushed;
The open-close type crank throw pressurizing unit that the square blank is housed is placed on travelling table, and by travelling table, open-close type crank throw pressurizing unit is moved into hydraulic press, by hydraulic press, the compacting patrix is depressed, the square blank is pressed in bed die, until blank is full of the extruding die cavity;
In the 4th step, form radius bar;
By travelling table, open-close type crank throw pressurizing unit is shifted out hydraulic press, hang out the compacting patrix, and stamping knife is connected with press; By travelling table, open-close type crank throw pressurizing unit is moved into hydraulic press, by hydraulic press, stamping knife is depressed, make press depress the degree of depth backed off after random stamping knife of regulation, thereby form two radius bars;
The 5th step drove two limit moulds and separates, and hung out workpiece;
In the 6th step, make workpiece advance the furnace treatment reason.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110360068.7A CN103100570B (en) | 2011-11-14 | 2011-11-14 | Openable crank extrusion device and forming method of large marine crankshaft crank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110360068.7A CN103100570B (en) | 2011-11-14 | 2011-11-14 | Openable crank extrusion device and forming method of large marine crankshaft crank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103100570A true CN103100570A (en) | 2013-05-15 |
| CN103100570B CN103100570B (en) | 2015-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110360068.7A Expired - Fee Related CN103100570B (en) | 2011-11-14 | 2011-11-14 | Openable crank extrusion device and forming method of large marine crankshaft crank |
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| Country | Link |
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| CN (1) | CN103100570B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109201997A (en) * | 2017-07-03 | 2019-01-15 | 上海昌强重工机械有限公司 | The processing mold and its processing technology of large-scale built-up crankshaft crank peculiar to vessel |
| CN109530605A (en) * | 2018-11-28 | 2019-03-29 | 上海电气上重铸锻有限公司 | A kind of large size crank throw forging apparatus and forging method |
| CN110695110A (en) * | 2019-09-30 | 2020-01-17 | 上海电机学院 | Crank extrusion forming device easy to demould and crank extrusion forming method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1616162A (en) * | 2004-09-09 | 2005-05-18 | 武汉重工铸锻有限责任公司 | Process and apparatus for producing large diesel engine crank axle and crank for ship |
| CN1947886A (en) * | 2006-11-01 | 2007-04-18 | 中国科学院金属研究所 | Equipment for bend-forging crank axle toggle of large ship and method for forging the same |
| CN101176907A (en) * | 2007-10-19 | 2008-05-14 | 中国科学院金属研究所 | Crankshaft bell crank bending forging counterdie for combined general macrotype ship as well as design method |
| JP2009208147A (en) * | 2008-03-06 | 2009-09-17 | Nissan Motor Co Ltd | Method for manufacturing crankshaft and forming die used therefor |
| JP2010214456A (en) * | 2009-03-18 | 2010-09-30 | Toyota Motor Corp | Press-forming method |
| CN102189212A (en) * | 2011-03-15 | 2011-09-21 | 燕山大学 | Large-scale crank shaft bending forging die |
-
2011
- 2011-11-14 CN CN201110360068.7A patent/CN103100570B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1616162A (en) * | 2004-09-09 | 2005-05-18 | 武汉重工铸锻有限责任公司 | Process and apparatus for producing large diesel engine crank axle and crank for ship |
| CN1947886A (en) * | 2006-11-01 | 2007-04-18 | 中国科学院金属研究所 | Equipment for bend-forging crank axle toggle of large ship and method for forging the same |
| CN101176907A (en) * | 2007-10-19 | 2008-05-14 | 中国科学院金属研究所 | Crankshaft bell crank bending forging counterdie for combined general macrotype ship as well as design method |
| JP2009208147A (en) * | 2008-03-06 | 2009-09-17 | Nissan Motor Co Ltd | Method for manufacturing crankshaft and forming die used therefor |
| JP2010214456A (en) * | 2009-03-18 | 2010-09-30 | Toyota Motor Corp | Press-forming method |
| CN102189212A (en) * | 2011-03-15 | 2011-09-21 | 燕山大学 | Large-scale crank shaft bending forging die |
Non-Patent Citations (1)
| Title |
|---|
| 王兵: "全纤维曲轴DTR法镦锻成形工艺研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109201997A (en) * | 2017-07-03 | 2019-01-15 | 上海昌强重工机械有限公司 | The processing mold and its processing technology of large-scale built-up crankshaft crank peculiar to vessel |
| CN109530605A (en) * | 2018-11-28 | 2019-03-29 | 上海电气上重铸锻有限公司 | A kind of large size crank throw forging apparatus and forging method |
| CN110695110A (en) * | 2019-09-30 | 2020-01-17 | 上海电机学院 | Crank extrusion forming device easy to demould and crank extrusion forming method |
| CN110695110B (en) * | 2019-09-30 | 2020-12-29 | 上海电机学院 | Crank extrusion forming device easy to demould and crank extrusion forming method |
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| Publication number | Publication date |
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| CN103100570B (en) | 2015-06-24 |
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