CN103752759A - Forging and molding process for double-lug fitting of electric railway contact net - Google Patents
Forging and molding process for double-lug fitting of electric railway contact net Download PDFInfo
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- CN103752759A CN103752759A CN201310591089.9A CN201310591089A CN103752759A CN 103752759 A CN103752759 A CN 103752759A CN 201310591089 A CN201310591089 A CN 201310591089A CN 103752759 A CN103752759 A CN 103752759A
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Abstract
The invention relates to a forging and molding process for a double-lug fitting of an electric railway contact net. The process comprises the following steps: driving mandrels to move downwards by using a driving oil cylinder positioned on a lower die, and injecting into the die cavity of the lower die fixed to a working platform; driving the upper die to move downwards to be assembled with the lower die in order to complete molding of a workpiece, wherein the pressure of the upper die is 5,000KN after die assembly; driving the upper die to move upwards to be opened, driving the mandrels to move upwards by using the driving oil cylinder positioned on the lower die, ejecting the workpiece upwards, and taking the workpiece out by working personnel to complete one procedure cycle, wherein the pressure of the driving oil cylinder is 3,000KN. The process has the advantages that one-time forging and molding can be performed by using the die; a hoop is sleeved at the outer ends of a movable working platform and a fixed working platform, thereby preventing deformation of a forged contact net due to opening of the die cavity by a blank during forging and molding; the forged contact net can be ejected out by using two mandrels, and punching can be performed conveniently by exhausting.
Description
Technical field
The present invention relates to a kind of contact nets in electrified railways ears gold utensil forging molding process.
Background technology
Parts of electrified railway contact network bracket formula gold utensil base is for the connection of the Highspeed Catenaries such as Beijing-Shanghai express railway, and its ear by base and bilateral symmetry setting thereof forms.The mode of producing at present this kind of gold utensil base has two kinds: a kind of is the method that adopts casting, and its existent defect is: interior tissue is loose, has shrinkage cavity, defects i.e.cracks, can't meet the quality requirement, and has larger potential safety hazard, and scraps more.
Can also adopt the method for forging, reason due to mould structure, current all enterprises are when adopting forging mold to forge this gold utensil base, the tonnage of the friction press needing is quite large, even and adopt large-tonnage friction press to forge, the gold utensil base forging is still prone to the phenomenon of rushing shape deficiency, cause scrapping of product, consume energy high, yield rate is low, and manufacturing cost is very high.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of contact nets in electrified railways ears gold utensil forging molding process.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: a kind of contact nets in electrified railways ears gold utensil forging molding process, and its innovation is: described step is:
A) the driving hydraulic oil cylinder driving push rod being positioned on counterdie is descending, starts to start material feeding in the die cavity on the steady job platform of counterdie;
B) patrix starts descending and counterdie and carries out matched moulds, and after matched moulds, the pressure of patrix is 5000KN, between 1000 ℃-1050 ℃ of the temperature of forging, completes component shaping;
C), after the component shaping in step b, the up die sinking of patrix, after patrix is up, be positioned at driving hydraulic oil cylinder driving push rod on counterdie and start uply, workpiece is upwards ejected, driving the pressure of oil cylinder is 300KN, by staff, take out workpiece, complete an operation circulation.
The invention has the advantages that: utilize this mould can a forging molding, in the outer end of active operation platform and steady job platform, be all set with an anchor ear, prevent that blank struts die cavity when forging molding, cause the contact net distortion forging; Two push rods can eject the contact net having forged, again can exhausts, conveniently rush shape.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that contact nets in electrified railways ears gold utensil of the present invention is forged into pattern.
The specific embodiment
Schematic diagram is as shown in Figure 1 known, and contact nets in electrified railways ears gold utensil of the present invention is forged into pattern and mainly comprises patrix and counterdie.
Patrix mainly comprises upper bed-plate 1 and active operation platform 15, active operation platform 15 is arranged on the bottom of upper bed-plate 1, the T-shaped shape of cross section of active operation platform 15, in the outer end of active operation platform 15, be set with an annular anchor ear A3, annular anchor ear A3 is stepped, annular anchor ear A3 fixes by spacing ring 2 and upper bed-plate 1, spacing ring 2 is connected with upper bed-plate 1 by screw, medium position in the bottom of active operation platform 15 has the pit A5 that a cross section is rectangle, at the two ends of pit A5, being provided with a cross section is isosceles T connected in star A4, described groove A4 all communicates with pit A5.
Counterdie mainly comprises steady job platform 9, push rod 10, lower bottom base 11 and backing plate 13, lower bottom base 11, backing plate 13, steady job platform 9 sets gradually from bottom to top, at the middle part of lower bottom base 11, have the groove of the bottom embedding of an appearance backing plate 13, in the top middle portion of backing plate 13, have the groove of the bottom embedding of an appearance steady job platform 9, in the outer end of steady job platform 9, be set with an annular anchor ear B12, annular anchor ear B12 fixes by screw 8 and lower bottom base 11, medium position in the upper end of steady job platform 9 has the pit B7 that a cross section is N word shape, at the two ends of pit B7, being provided with a cross section is isosceles T connected in star B6, groove B6 does not all communicate with pit B7, medium position at backing plate 13 has the cavity that a cross section is rectangle, in cavity, be provided with two push rods 10, the top of two push rods 10 is connected with two bottoms of pit B7 respectively, the bottom of push rod 10 is provided with a drive plate 14 that can drive push rod 10 to move up and down, the T-shaped shape of cross section of drive plate 14, on drive plate 14 is undertaken by driving hydraulic oil cylinder driving, lower movement.
After patrix and counterdie matched moulds, pit A5 and pit B7 have formed railway contact net die cavity jointly, the railway contact net that utilizes this die cavity to forge, and groove A4 and groove B6 have formed clout circulation runner jointly.
While utilizing above-mentioned forging molding mould to forge contact net ears gold utensil, concrete steps are as follows:
The first step, the driving hydraulic oil cylinder driving push rod 10 being positioned on counterdie is descending, starts to start material feeding in the die cavity on the steady job platform 9 of counterdie.
Second step, patrix starts descending and counterdie and carries out matched moulds, and after matched moulds, the pressure of patrix is 5000KN left and right, between 1000 ℃-1050 ℃ of the temperature of forging, completes component shaping.
The 3rd step, after the component shaping in step b, the up die sinking of patrix, after patrix is up, driving hydraulic oil cylinder driving push rod 10 beginnings that are positioned on counterdie are up, and workpiece is upwards ejected, driving the pressure of oil cylinder is 300KN, by staff, takes out workpiece, completes an operation circulation.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (1)
1. a contact nets in electrified railways ears gold utensil forging molding process, is characterized in that: described step is:
A) the driving hydraulic oil cylinder driving push rod being positioned on counterdie is descending, starts to start material feeding in the die cavity on the steady job platform of counterdie;
B) patrix starts descending and counterdie and carries out matched moulds, and after matched moulds, the pressure of patrix is 5000KN, between 1000 ℃-1050 ℃ of the temperature of forging, completes component shaping;
C), after the component shaping in step b, the up die sinking of patrix, after patrix is up, be positioned at driving hydraulic oil cylinder driving push rod on counterdie and start uply, workpiece is upwards ejected, driving the pressure of oil cylinder is 300KN, by staff, take out workpiece, complete an operation circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310591089.9A CN103752759B (en) | 2013-11-22 | 2013-11-22 | A kind of contact nets in electrified railways ears gold utensil forging molding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310591089.9A CN103752759B (en) | 2013-11-22 | 2013-11-22 | A kind of contact nets in electrified railways ears gold utensil forging molding process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103752759A true CN103752759A (en) | 2014-04-30 |
| CN103752759B CN103752759B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310591089.9A Active CN103752759B (en) | 2013-11-22 | 2013-11-22 | A kind of contact nets in electrified railways ears gold utensil forging molding process |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5238511A (en) * | 1992-02-04 | 1993-08-24 | Everts En Van Der Weyden Exploitatiemaatschappij | Double C-shaped clamp |
| CN101020233A (en) * | 2007-01-30 | 2007-08-22 | 北京交通大学 | Making process of binaural connector for contact network |
| CN102581256A (en) * | 2012-01-13 | 2012-07-18 | 江苏华威线路设备集团有限公司 | Aluminum alloy liquid die forging manufacturing process for parts of electrified high-speed railway contact nets |
| CN202377468U (en) * | 2012-01-17 | 2012-08-15 | 四川新筑精坯锻造有限公司 | Hot-forging closed type forward extrusion hot-forging die for circular anchor ring |
-
2013
- 2013-11-22 CN CN201310591089.9A patent/CN103752759B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5238511A (en) * | 1992-02-04 | 1993-08-24 | Everts En Van Der Weyden Exploitatiemaatschappij | Double C-shaped clamp |
| CN101020233A (en) * | 2007-01-30 | 2007-08-22 | 北京交通大学 | Making process of binaural connector for contact network |
| CN102581256A (en) * | 2012-01-13 | 2012-07-18 | 江苏华威线路设备集团有限公司 | Aluminum alloy liquid die forging manufacturing process for parts of electrified high-speed railway contact nets |
| CN202377468U (en) * | 2012-01-17 | 2012-08-15 | 四川新筑精坯锻造有限公司 | Hot-forging closed type forward extrusion hot-forging die for circular anchor ring |
Non-Patent Citations (1)
| Title |
|---|
| 张益民等: "模锻制造接触网零件应注意的问题", 《西铁科技》, no. 1, 31 March 2003 (2003-03-31), pages 27 - 28 * |
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| Publication number | Publication date |
|---|---|
| CN103752759B (en) | 2016-01-20 |
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