CN202894169U - Tooth-shaped tubular column cold forging gear hole extruding mould - Google Patents

Tooth-shaped tubular column cold forging gear hole extruding mould Download PDF

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Publication number
CN202894169U
CN202894169U CN 201220538127 CN201220538127U CN202894169U CN 202894169 U CN202894169 U CN 202894169U CN 201220538127 CN201220538127 CN 201220538127 CN 201220538127 U CN201220538127 U CN 201220538127U CN 202894169 U CN202894169 U CN 202894169U
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China
Prior art keywords
tooth
core rod
counterdie
cold forging
profile
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Active
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CN 201220538127
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Chinese (zh)
Inventor
蔡冰
黄荣
朱亚萍
季成
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Jiangsu R & D Polytron Technologies Inc
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YANCHENG LIYAN PRECISION FORGING CO Ltd
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Priority to CN 201220538127 priority Critical patent/CN202894169U/en
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Abstract

The utility model provides a tooth-shaped tubular column cold forging gear hole extruding mould which comprises a punch guide sleeve, a tooth-shaped punch installed in the punch guide sleeve, a lower mould guide sleeve, a lower mould, a first lower mould core and a second lower mould core. The tooth-shaped tubular column cold forging gear hole extruding mould is characterized in that the tooth-shaped punch and the punch guide sleeve are combined to form a whole punch structure, and the second lower mould core is arranged around the first lower mould core and fitted with the first lower mould core in a clearance mode. Compared with the prior art, the tooth-shaped tubular column cold forging gear hole extruding mould is simple in structure, and convenient to produce and manufacture in a large scale mode, ensures product precision, saves cost, and improves production efficiency.

Description

Profile of tooth tubing string cold forging crowded teeth is squeezed punch die
[technical field]
The utility model relates to metal precision forging field, and particularly a kind of profile of tooth tubing string cold forging crowded teeth is squeezed punch die.
[background technology]
The tubing string blank is a kind of coiling plug for power system, forge the hole of tubing string blank palpus shaping both ends of the surface and the face tooth of large end face bellmouth bottom surface, see also shown in Figure 1, it is a kind of tubing string blank, and 110 is the taper hole of large end, and 120 is the face tooth of taper hole 110 bottoms, 130 is the deep hole of small end, the Wall-Thickness Difference △ d≤0.5mm of described deep hole 130, because hole shape and the profile accuracy of described tubing string blank are had relatively high expectations, and to guarantee good axiality requirement.At present, the punching jumping-up is adopted in traditional processing more, mill again the explained hereafter tubing string blank of pin processing, but because the aperture wall thickness of tubing string is thinner, the product after the cutting is through slightly colliding with, the phenomenons such as orifice part can crack, fracture, and production efficiency is low, the cutting inner hole precision is not high, and undercapacity, uniformity are poor, is difficult to guarantee batch production and waste material.
Therefore, be necessary to propose a kind of improved technical scheme and solve the problems referred to above.
[summary of the invention]
The purpose of this utility model is to provide a kind of profile of tooth tubing string cold forging crowded teeth to squeeze punch die, and it is simple in structure, can guarantee Product Precision, saves cost, enhances productivity.
In order to address the above problem, according to an aspect of the present utility model, the utility model provides a kind of profile of tooth tubing string cold forging crowded teeth to squeeze punch die, it comprises the drift fairlead, be assemblied in the profile of tooth drift in the drift fairlead, the counterdie fairlead, counterdie, the first counterdie core rod and the second counterdie core rod, it is characterized in that: described profile of tooth drift and drift fairlead are combined into a solid punch structure, described the second counterdie core rod be arranged at the first counterdie core rod around, and adopt matched in clearance with the first counterdie core rod.
Further, the lower mode cavity that surrounds of described counterdie fairlead is the tubbiness that diameter from top to bottom successively decreases.
Further, the gap≤0.1mm between described the first counterdie core rod and the second counterdie core rod is so that the first counterdie core rod can carry out laterally trickle slip in the extrusion process in the second counterdie core rod.
Further, adopt matched in clearance tangentially stressed to reduce core rod between described counterdie core rod and the counterdie.
According to a further aspect in the invention, a kind of profile of tooth tubing string of the utility model cold forging crowded teeth is squeezed punch die, its its be used for the cylinder blank with tubbiness blind hole that Cold forging is forged the entity end carry out crowded teeth and squeeze the hole and form that to have the not same end of diameter be that bellmouth, the other end are the forging stock of the cylinder of tubbiness blind hole and the changeover portion between them, described bellmouth bottom is with the face tooth, the operation of described profile of tooth tubing string cold-forging forming comprises blanking, annealing, ball blast, lubricated, anti-hole, ball blast, the lubricated of squeezing, crowded teeth is squeezed hole, normalized treatment; Described crowded teeth is squeezed the hole operation and is comprised crowded teeth, and jumping-up squeezes the hole.
Further, using described profile of tooth tubing string cold forging crowded teeth to squeeze the crowded hole of punch die execution crowded teeth operation comprises: described cylinder blank with tubbiness blind hole is put into lower mode cavity, utilize the guiding extruding of drift fairlead and counterdie fairlead, the blind hole of cylinder blank is enclosed within on the first counterdie core rod; Described profile of tooth drift moves downward and presses to cylinder blank entity end, the stressed increase of cylinder blank, in the situation that the stressed increase of blank, described profile of tooth drift is rushed in the cylinder blank and then is formed a bellmouth, the blank metal of bellmouth outer upwards flows along the tapering of drift simultaneously, so that the lengthening of cylinder blank, jumping-up, the flank of tooth of profile of tooth drift is so that the bellmouth bottom has the face tooth at this moment.
Compared with prior art, the utility model is simple in structure, is convenient to produce in enormous quantities and manufacturing, and can guarantees Product Precision, saves cost, enhances productivity.
[description of drawings]
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.Wherein:
Fig. 1 is that the utility model profile of tooth tubing string cold forging crowded teeth is squeezed the punch die structural representation;
Fig. 2 utilizes crowded teeth among Fig. 1 to squeeze punch die the tubing string blank is carried out the process chart that crowded teeth is squeezed the hole;
Fig. 3 is the shape of product change procedure figure that obtains after Fig. 2 operation.
[specific embodiment]
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Alleged " embodiment " or " embodiment " refer to be contained in special characteristic, structure or the characteristic at least one implementation of the utility model herein.Different local in this manual " in one embodiment " that occur not are all to refer to same embodiment, neither be independent or the embodiment mutually exclusive with other embodiment optionally.
The utility model profile of tooth tubing string cold forging crowded teeth is squeezed punch die, and is simple in structure, is convenient to produce in enormous quantities and manufacturing, and can guarantees Product Precision, saves cost, enhances productivity.
See also shown in Figure 1ly, it is that utility model profile of tooth tubing string cold forging crowded teeth is squeezed the punch die structural representation.Crowded teeth described in the figure is squeezed punch die and is adopted split drift and split pattern cored structure, it comprises drift fairlead 110, be assemblied in the profile of tooth drift 120 in the drift fairlead 110, counterdie fairlead 130, counterdie 140, the first counterdie core rods 150, the second counterdie core rods 160, described profile of tooth drift 120 is combined into a solid punch with drift fairlead 110, and described profile of tooth drift 120 is for cone shape and stretch out drift fairlead 110 certain distances.Described the second counterdie core rod 160 be arranged at the first counterdie core rod 150 around, and adopt matched in clearance with the first counterdie core rod 150.
The lower mode cavity that described counterdie fairlead 130 surrounds is the tubbiness that diameter from top to bottom successively decreases.
Gap≤0.1mm between described the first counterdie core rod 150 and the second counterdie core rod 160 is so that the first counterdie core rod 150 can carry out laterally trickle slip in the extrusion process in the second counterdie core rod 160.
Adopt matched in clearance tangentially stressed to reduce core rod between described counterdie core rod and the counterdie.
See also shown in Figure 2ly, it squeezes punch die for crowded teeth the tubing string blank is carried out the process chart that crowded teeth is squeezed the hole.See also shown in Figure 3ly, it is shape of product change procedure figure of obtaining after Fig. 2 operation.The process that wherein said crowded teeth is squeezed the hole is:
Step 210: blanking
Adopt the accurate blanking of circular saw, the fluctuation of blank weight is ± 0.5g the blank bar shape that Fig. 3 (a) obtains for blanking procedure.
Step 220: annealing
Through annealing operation, purpose is softening bar, reduces bar hardness, eliminates residual stress with the blank bar, and stable dimensions reduces distortion and crackle tendency, and crystal grain thinning is adjusted tissue, eliminates tissue defects.
Step 230: ball blast
The purpose of described ball blast is that the blank bar is carried out removing surface, increases the dislocation density of blank bar inside, improves bar intensity.
Step 240: lubricated, i.e. phospholeum processing.
Step 250: instead squeeze the hole
Described anti-crowded hole is with annealing, and the die cavity that ball blast, the blank bar after the lubricated are put into indirect-extrusion mould carries out backward extrusion has the tubbiness blind hole to form an end cylinder blank, guarantees simultaneously the Wall-Thickness Difference △ d<0.3mm in hole.Owing to being at the die cavity internal shaping, therefore can guarantee cylinder blank endoporus axiality to foreign round.The shape of product that Fig. 3 (b) obtains for anti-crowded operation.Because the bar that the anti-metal material that squeezes endoporus by the mobile tubbiness blind hole that forms, instead squeezes behind the hole axially lengthens, and has therefore reduced spillage of material.
Step 260: the product behind the anti-crowded hole is carried out ball blast, lubricated.
Step 270: crowded teeth is squeezed the hole
It is through ball blast to the cylinder blank behind the anti-crowded hole that described crowded teeth is squeezed the hole, put into the crowded punch die of crowded teeth after the lubricated and carry out crowded teeth, jumping-up and crowded hole have the forging stock of the not same end of diameter as bellmouth, the other end as the cylinder of tubbiness blind hole and the changeover portion between them take formation, and described bellmouth bottom is with the face tooth.In the utility model when blank bar crowded teeth is squeezed the hole, crowded teeth, jumping-up and the unification of crowded hole three process, when the jumping-up step, taper hole is extruded, also taken out of the face tooth of taper hole bottom simultaneously, save cost, shorten the production cycle, save cost with respect to traditional machining, raise the efficiency.Fig. 3 (c) is for squeezing the shape of product that the hole operation obtains with crowded teeth.
Wherein, after step 270 crowded teeth is squeezed the hole, gained cylinder blank has been carried out normalized treatment to improve the mechanical performance of blank.
Next introducing in detail utilizes crowded teeth to squeeze the process that punch die carries out the crowded hole of crowded teeth.
Described profile of tooth drift 120 is assembled in the drift fairlead 110, be combined into a solid punch, recycling drift fairlead 110 and the 130 guiding extruding of counterdie fairlead, with the anti-borehole jack that squeezes of cylinder blank on the first counterdie core rod 150, to proofread and correct the blank position, locate to extrude bellmouth and face tooth with the anti-hole of squeezing, the aperture that forms like this blank in this operation can not occur owing to the thinner cracking phenomena that produces of aperture wall thickness.Because anti-squeezing has Wall-Thickness Difference, the first counterdie core rod 150 easily is subject to horizontal power and fractures in the extrusion process, so when this mould of design, adopt matched in clearance between the first counterdie core rod 150 and the second counterdie core rod 160, the first counterdie core rod 150 can carry out laterally trickle slip at the second counterdie core rod 160 in the extrusion process, allow the first counterdie core rod 150 be fit to the anti-Wall-Thickness Difference that squeezes the cylinder blank, thereby reduce the power that the first counterdie core rod 150 carries in extrusion process, improve die life.
In sum, the utility model adopts split core rod and split punch structure, and is simple in structure, is convenient to produce in enormous quantities and manufacturing, and can guarantees Product Precision, saves cost, enhances productivity.
Above-mentioned explanation has fully disclosed the specific embodiment of the present utility model.It is pointed out that and be familiar with the scope that any change that the person skilled in art does the specific embodiment of the present utility model does not all break away from claims of the present utility model.Correspondingly, the scope of claim of the present utility model also is not limited only to previous embodiment.

Claims (4)

1. a profile of tooth tubing string cold forging crowded teeth is squeezed punch die, it comprises the drift fairlead, be assemblied in the profile of tooth drift in the drift fairlead, the counterdie fairlead, counterdie, the first counterdie core rod and the second counterdie core rod is characterized in that: described profile of tooth drift and drift fairlead are combined into a solid punch structure, described the second counterdie core rod be arranged at the first counterdie core rod around, and adopt matched in clearance with the first counterdie core rod.
2. profile of tooth tubing string cold forging crowded teeth according to claim 1 is squeezed punch die, it is characterized in that: the lower mode cavity that described counterdie fairlead surrounds is the tubbiness that diameter from top to bottom successively decreases.
3. profile of tooth tubing string cold forging crowded teeth according to claim 1 is squeezed punch die, it is characterized in that: the gap≤0.1mm between described the first counterdie core rod and the second counterdie core rod, so that the first counterdie core rod can carry out laterally trickle slip in the extrusion process in the second counterdie core rod.
4. profile of tooth tubing string cold forging crowded teeth according to claim 1 is squeezed punch die, it is characterized in that: adopt matched in clearance tangentially stressed to reduce core rod between described counterdie core rod and the counterdie.
CN 201220538127 2012-10-19 2012-10-19 Tooth-shaped tubular column cold forging gear hole extruding mould Active CN202894169U (en)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103302163A (en) * 2013-06-21 2013-09-18 安徽华东光电技术研究所 Integrated forming methods of wave guide transformation coupler inner cavity and coupler and forming tool of wave guide transformation coupler inner cavity
CN103350137A (en) * 2013-06-21 2013-10-16 江苏盈科汽车空调有限公司 Stamping device
CN106391966A (en) * 2016-09-27 2017-02-15 大丰市昱祺机械制造有限公司 Run-through type gear burnishing die

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103302163A (en) * 2013-06-21 2013-09-18 安徽华东光电技术研究所 Integrated forming methods of wave guide transformation coupler inner cavity and coupler and forming tool of wave guide transformation coupler inner cavity
CN103350137A (en) * 2013-06-21 2013-10-16 江苏盈科汽车空调有限公司 Stamping device
CN103350137B (en) * 2013-06-21 2016-02-10 江苏盈科汽车空调有限公司 A kind of decompressor
CN106391966A (en) * 2016-09-27 2017-02-15 大丰市昱祺机械制造有限公司 Run-through type gear burnishing die

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CP03 Change of name, title or address

Address after: 224100 West Zone, Dafeng District, Jiangsu, Yancheng City

Patentee after: Jiangsu R & D Polytron Technologies Inc

Address before: 224100 No. three, West Road, Dafeng Economic and Technological Development Zone, Yancheng City, Jiangsu

Patentee before: Yancheng Liyan Precision Forging Co.,Ltd.