CN101306450B - Precise clicking technique of track link rail - Google Patents
Precise clicking technique of track link rail Download PDFInfo
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- CN101306450B CN101306450B CN2008101226705A CN200810122670A CN101306450B CN 101306450 B CN101306450 B CN 101306450B CN 2008101226705 A CN2008101226705 A CN 2008101226705A CN 200810122670 A CN200810122670 A CN 200810122670A CN 101306450 B CN101306450 B CN 101306450B
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Abstract
The invention discloses a precision die cutting technique for a caterpillar section, which is particularly applied to a caterpillar section forge piece with requirements of straight holes and straight edges. A set of nitrogen compressing die is added on an forged clipping press, a forge piece with a certain draft angle after the normal working procedures of edge-trimming and punching is subjected to deep processing by using a precision cutting die with a punch and a female in combination with the nitrogen compressing die, thereby forming a surface with the straight holes and the straight edges conforming to the final requirements, wherein the deep processing of the precision die cutting technique is carried out by the one-step punching forming via the nitrogen compressing die. Originally, two processes of milling the surfaces on two sides and drawing the surface on one side of two holes are required, after applying the precision die cutting technique of the invention to the actual production, the two processes are eliminated because the one-step punching forming procedure is added after forging, thereby greatly shortening the production flow, remarkably reducing the intermediate remanufactured products and remarkably reducing the cost.
Description
Technical field
The present invention relates to side cut, the punching technology of technical field of forging, relate in particular to a kind of accurate punching processing technology with engineering machinery of straight hole straight flange requirement with the track link rail forging.
Background technology
The track link rail forging products is one of requisite major part of caterpillar engineering vehicles driving system.The crawler belt of generally every vehicle bottom need use nearly about 200 at chain rail joint altogether, and its consumption is relatively large.This track link rail one side is connected through screw with creeper tread, and opposite side then is set on the driving wheel and rolls.Based on the requirement that realizes function, a side in track link rail both sides and middle two holes need form the plane, and requires loose relatively to the degree of roughness on these planes.Because the forging and molding process of this forging has determined these planes that certain depanning gradient is all arranged; These characteristics make it can't directly satisfy the actual needs that use; Traditional processing technology has proposed processing method targetedly to this: promptly after forging heat treatment, process these planes with machining apparatus, wherein the plane of both sides generally processes with milling machine, and the plane of middle two holes one side generally processes with broaching machine; Through the processing of this two aspect, the depanning hypotenuse on each required plane of track link rail is eliminated.Yet, receiving the influence of the various market factors, the cost of this forging products is constantly increasing, and the competitiveness of product in market has received great restriction.
The front has been explained and has been had the way of on the track link rail forging products, handling the depanning gradient now; The higher shortcoming of its cost is obvious; Thereby, further seek the approach of depanning gradient on the low-cost processes forging products, be the important R&D direction that the sector technical staff seek assiduously.
Summary of the invention
The object of the present invention is to provide the process of a kind of forging close trim, punching, substitute the existing common machine processing method of passing through and accomplish plane processing, reduce the cost of track link rail forging products.
The object of the invention will be realized through following technical scheme:
Precise clicking technique of track link rail; To the track link rail forging that is applied to have the requirement of straight hole straight flange; Described clicking technique be utilize precision that the nitrogen compaction mold carries out one-step punching forming towards straight hole with cut the straight flange operation; For accomplishing the forging that has certain depanning gradient after normal punching and the side cut operation, carry out the deep processing of accurate punching, thereby form the machined surface of final technological requirement.
Further, precise clicking technique of track link rail, it comprises upper and lower die holder wherein said nitrogen compaction mold; Fixed head, backing plate, punch-die, die, die block, pressure die fixed head, pressure die, drift, guide bar bolt, stripper etc.; Two cylinders are installed on said upper bolster at least, in upper bolster, have the air flue that is interconnected, said air flue is connected with cylinder; Be filled with nitrogen in the air flue, cylinder and air flue constitute the high-pressure system of a complete seal.
Further, precise clicking technique of track link rail, wherein said pressure die are fixed on the pressure die fixed head, and the pressure die fixed head is connected with upper bolster through guide bar bolt; The non-impact end of said drift is fixedly connected with upper bolster through fixed head, backing plate; Said die is fixed on the die block, and die block is fixedly connected with upper bolster with backing plate through fixed head; Said stripper floats with die shoe with stage clip through bolt and is connected.
Further, precise clicking technique of track link rail, an end of wherein said air flue is equipped with sealing-plug, and the other end is equipped with Pressure gauge, and the pressure in the air flue is 2MPa-4MPa.
Further, precise clicking technique of track link rail, wherein said number of cylinders is 2n, wherein n >=1.
Further, precise clicking technique of track link rail, wherein said drift and die adopt is that the trade mark is that the die steel material manufacturing of H13 (4CrMoSiV1) forms.
Further, precise clicking technique of track link rail, the cutting edge of wherein said drift and die partly are that mode manufacturing through No. 6 wear resistance electrodes of built-up welding Si Taili cobalt-based forms.
Precise clicking technique of track link rail of the present invention; Its beneficial effect that has is embodied in: through after forging, increasing an accurate punching operation; Save the original required two procedures of milling two side planes and drawing two holes, one side plane; The production flow process shortens dramatically, and middle reproduced goods significantly reduce, and it is remarkable that cost reduces effect.
The purpose of precise clicking technique of track link rail of the present invention, characteristic and advantage will combine respective drawings to do further to specifically describe through a following preferred embodiment, to deepen the understanding to essence of the present invention.
Description of drawings
Fig. 1 is the forging products outward appearance front view that the present invention produces;
Fig. 2 is the cross sectional side view of the present invention's forging products one punching place of producing.
Fig. 3 is the structural representation of nitrogen compaction mold of the present invention.
The specific embodiment
Precise clicking technique of track link rail of the present invention; To the track link rail forging that is applied to have the requirement of straight hole straight flange; After it is accomplished in regular turn and includes blank heating operation, flattening process, blocking operation, finish-forging operation, common die-cut operation; Carry out precise clicking technique, described precise clicking technique be utilize precision that the nitrogen compaction mold carries out one-step punching forming towards straight hole with cut the straight flange operation, to accomplishing the forging that has certain depanning gradient after normal side cut and the punching operation; Carry out the deep processing of accurate punching, thereby form the machined surface of final technological requirement.
The present invention in the specific implementation; The object that close trim and punching technology were directed against that provides; Mainly be that a circular blank is heated to the temperature that is fit to forging, resulting track link rail forging intermediate products after forging press flattening, blocking, finish-forging, forcing press side cut and punching.As shown in Figure 1; These track link rail forging products 18 basic profiles are oblong; Upper and lower both sides are respectively applied for the creeper tread and being set on the driving wheel of being spirally connected; Cut into planely 181,182 respectively, its inside also is formed with two perforation through punching technology, and cuts respectively in two perforation, one side and to form plane 183,184.Finished parts often has the depanning gradient in the middle of this chain rail joint, for the assembling of chain rail joint and use and caused considerable influence.So precise clicking technique of the present invention, promptly provide a kind of efficient, easy and can significantly cost-effective deep processing means to this defective.Particularly, on clipping press after the forging, increase by a cover nitrogen compaction mold, carry out the deep processing of an accurate punching for the forging that has certain depanning gradient after the normal side cut of completion, the punching operation, thereby form the processing plane of final requirement.Wherein, as shown in Figure 3, nitrogen compaction mold of the present invention; It comprises upper and lower die holder 2,17; Fixed head 5, backing plate 4, punch-die 13, die 14, die block 8, pressure die fixed head 7, pressure die 12, drift 6, guide bar bolt 9, stripper 11 is equipped with two cylinders 3 at least on said upper bolster 2; In upper bolster 2, have the air flue 19 that is interconnected; Said air flue 19 is connected with cylinder 3, is filled with nitrogen in the air flue 19, and cylinder 3 and air flue 19 constitute the high-pressure system of a complete seal.Pressure die 12 is fixed on the pressure die fixed head 7, and pressure die fixed head 7 is connected with upper bolster 2 through mould guide rod 9; The non-impact end of said drift 6 is fixedly connected with upper bolster 2 through fixed head 5, backing plate 4; Said die 14 is fixed on the die block 8, and die block 8 is fixedly connected with upper bolster 2 through fixed head 5, backing plate 4 in regular turn; Said stripper 11 floats with die shoe 17 with stage clip 15 through bolt 16 and is connected.One end of said air flue 19 is equipped with sealing-plug 1, and the other end is equipped with Pressure gauge 10, and the pressure in the air flue 19 is 2MPa-4MPa.Said number of cylinders is 2n, wherein n >=1.Guide bar bolt 9 symmetries are located at upper and lower die holder 2, the two ends between 17, and guide bar bolt 9 passes and is located at up and down that the pressure die fixed head 7 between the die holder is fixedly connected with upper bolster, and the other end of cylinder 3 is withstanding on the pressure die fixed head 7 under the effect of its pressure.
In practical application, will wait to cut edge, the forging products 18 of punching is placed on the punch-die 13; The part of the upper die moves downward with the lathe slide block, and pressure die 12 at first contacts with forging products 18, along with further moving downward of part of the upper die; The piston of cylinder 3 is compressed; Pressure affacts on forging 18 products through pressure die fixed head 7 and pressure die 12, treat that forging products 18 is compacted after, the drift 6 that is contained on the upper bolster 2 begins to dash, cut the gross weight and the overlap of forging products with die 14.Dash, cut into back punching head 6 and die 14 moves upward with upper bolster 2 and lathe slide block; In the process that moves upward; Pressure die 12 keeps enough pressure to forging products 18 all the time, breaks away from forging products 18 fully up to drift 6 and die 14, along with the continuation of lathe slide block is up; Pressure die 12 finally also breaks away from forging products, and whole impulse stroke finishes.In this process, along with moving upward of die 14, stripper 11 pushes away punch-die 13 with overlap under the effect of spring 15, and gross weight falls in the fore-and-aft direction through hole in the middle of the die shoe 17.
This nitrogen compaction mold includes parts such as drift and die; It is that the die steel material manufacturing of H13 (4CrMoSiV1) forms that this drift and die body all adopt the trade mark, forms and the cutting edge of drift and die partly is a mode manufacturing through No. 6 wear resistance electrodes of built-up welding Si Taili cobalt-based.Thereby guaranteed that drift and die have wear-resisting preferably, high temperature resistant, anti-thermal shock and impact, so guaranteed dash, the quality in section.
More in depth; The forging intermediate products of gained after first subnormal side cut, the punching are put into accurate punching make its work with nitrogen compaction mold and opening device, then the die of mould can be with the upper side edge 181 of track link rail and cutting away more than material of lower side 182 places; The drift of mould is cutting away more than material two perforated side 183,184 places respectively then.As shown in Figure 2; Be the aforementioned depanning hypotenuse that has a strong impact on the assembling of track link rail forging by the material area 20 of die-cut removal among the figure,, not only promoted track link rail forging quality through precise clicking technique of the present invention; And save original required two side planes and the two procedures of drawing two holes, one side plane of milling; The production flow process shortens dramatically, and middle reproduced goods significantly reduce, and it is remarkable that cost reduces effect.And the operating type that adopts nitrogen to compress has further guaranteed the size and the form and position tolerance of forging itself.
In addition, this close trim and punching technology are suitable equally to the forging that other has similar requirement, only need to change mould parts such as corresponding punch, die, drift, can implement to accomplish demands of different.
More than be concrete example of the present invention, this case protection domain do not constituted any limitation that all employing equivalents or equivalence are replaced and the technical scheme of formation, all drop within the rights protection scope of the present invention.
Claims (7)
1. precise clicking technique of track link rail; To the track link rail forging that is applied to have the requirement of straight hole straight flange; It is characterized in that described precise clicking technique be utilize precision that the nitrogen compaction mold carries out one-step punching forming towards straight hole, cut the straight flange operation; To accomplishing the forging that has certain depanning gradient after normal punching and the side cut operation, carry out the deep processing of accurate punching, thereby form the machined surface of final technological requirement.
2. precise clicking technique of track link rail according to claim 1; It comprises upper and lower die holder to it is characterized in that described nitrogen compaction mold; Fixed head, backing plate, punch-die, die, die block, pressure die fixed head, pressure die, drift, guide bar bolt, stripper; Two cylinders are installed on said upper bolster at least, in upper bolster, have the air flue that is interconnected, said air flue is connected with cylinder; Be filled with nitrogen in the air flue, cylinder and air flue constitute the high-pressure system of a complete seal.
3. precise clicking technique of track link rail according to claim 2 is characterized in that said pressure die is fixed on the pressure die fixed head, and the pressure die fixed head is connected with upper bolster through guide bar bolt; The non-impact end of said drift is fixedly connected with upper bolster through fixed head, backing plate; Said die is fixed on the die block, and die block is fixedly connected with upper bolster with backing plate through fixed head; Said stripper floats with die shoe with stage clip through bolt and is connected.
4. precise clicking technique of track link rail according to claim 3 is characterized in that: an end of said air flue is equipped with sealing-plug, and the other end is equipped with Pressure gauge, and the pressure in the air flue is 2MPa-4MPa.
5. precise clicking technique of track link rail according to claim 3 is characterized in that: said number of cylinders is 2n, wherein n >=1.
6. precise clicking technique of track link rail according to claim 3 is characterized in that: said drift and die adopt is that the trade mark is that the die steel material manufacturing of H13 (4CrMoSiV1) forms.
7. precise clicking technique of track link rail according to claim 3 is characterized in that: the cutting edge of said drift and die partly is that the mode manufacturing through No. 6 wear resistance electrodes of built-up welding Si Taili cobalt-based forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101226705A CN101306450B (en) | 2008-06-05 | 2008-06-05 | Precise clicking technique of track link rail |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101226705A CN101306450B (en) | 2008-06-05 | 2008-06-05 | Precise clicking technique of track link rail |
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| CN101306450A CN101306450A (en) | 2008-11-19 |
| CN101306450B true CN101306450B (en) | 2012-04-25 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102806295A (en) * | 2011-05-31 | 2012-12-05 | 四川振强模锻有限公司 | Punching trimming die for turnbuckle crane |
| CN102284596B (en) * | 2011-06-22 | 2014-02-26 | 重庆理工大学 | Closed extruding fine blanking die based on floating female die structure |
| CN103071719A (en) * | 2011-10-26 | 2013-05-01 | 苏州汉扬精密电子有限公司 | Stamping die mechanism |
| CN102814412B (en) * | 2012-08-14 | 2014-11-26 | 济南轨道交通装备有限责任公司 | Small hole punching trimmed composite mould |
| CN103978090A (en) * | 2014-05-19 | 2014-08-13 | 安徽大昌科技股份有限公司 | Trimming die of rear suspension mounting support |
| CN105290205A (en) * | 2015-11-28 | 2016-02-03 | 孙新梅 | Abutting type punching device |
| CN112453297A (en) * | 2020-10-23 | 2021-03-09 | 北京北方车辆集团有限公司 | Forging and forming method of connected track shoe forging hammer |
| CN114850370A (en) * | 2022-05-23 | 2022-08-05 | 山东豪迈精锻科技有限公司 | Automatic separation device for trimming flash of caterpillar track section |
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