CN101700553B - Manufacture technology of ball connection point with coreless necking bulging pressing method - Google Patents
Manufacture technology of ball connection point with coreless necking bulging pressing method Download PDFInfo
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- CN101700553B CN101700553B CN2009101940668A CN200910194066A CN101700553B CN 101700553 B CN101700553 B CN 101700553B CN 2009101940668 A CN2009101940668 A CN 2009101940668A CN 200910194066 A CN200910194066 A CN 200910194066A CN 101700553 B CN101700553 B CN 101700553B
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- bulging
- reducing
- necking
- stress
- ball contact
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Abstract
The invention relates to a manufacture technology of a ball connection point with a coreless necking bulging pressing method. The ball connection point is suitable for a combined type ball connecting handrail for a security enclosure. The manufacture technology comprises the steps as follows: a tubular rough-necking-bulging-shaping-removing stress and hot treating-machine holes-detecting-warehousing. The technology has the advantages in that: the pressing process of necking, bulging and shaping the rough and forming the ball connection point does not adopt the method that separated movable convex dies, rubber, polyurethane or liquid, and the like, are taken as core ware to transfer the axial pressure of a press machine into the radial pressure to the bulging of a work piece, but adopting the method which comprises the steps of directly designing a special press die, generating the radial bulging under the axial pressure of the press machine with the self intensity of the work piece to form the ball connection point, and machining the holes remained by necking the south magnetic pole and the north magnetic pole into handrail pipe holes or cross-bar pipe holes or the zinc leakage for treating the hot dip galvanizing of a steel handrail. The ball connection point is seamless and is heat treated by means of removing the stress, thereby improving the safety performance thereof.
Description
Technical field
The present invention relates to a kind of coreless necking bulging pressing and produce the preparation technology of ball contact, be specifically related to a kind of combined type ball and connect the ball contact that railing uses and prepare preparation technology, belong to the metal cool-press processing technique field.
Background technology
Every have the dangerous place of falling just railing must be set, railing has various ways, it is attractive in appearance because of it that the combined type ball connects railing, easy for installation, be suitable for producing by batch in factory normalization, be widely used in industrial platform, municipal administration gardens industry, the ball contact that the combined type ball connects railing is to be welded by Metal Ball contact and metal tube, and the ball contact is the node and the tie point of railing post, handrail, cross bar, and the key technology that the combined type ball connects railing is produced in being prepared into of ball contact.
The traditional preparation process method of ball contact is the pull and stretch method, and the bulging method also has two methods that hemisphere is welded of employing.
The pull and stretch method is the cup-shaped work piece of sheet sheet material at the bottom of being drawn into hemisphere on the forcing press, makes the ball contact through operations such as side cut reducings, and this preparation preparation technology requires high to sheet material, and operation is many, and yield rate is low, thereby the production cost height, and efficient is low.
The bulging method is with hollow object or radially expansion outward of tubular blank, inner utilization chipware at tubular blank, as sectional type movable punch, rubber (polyamine fat) or liquid, make the axial compressive force of forcing press be converted into radial expansion force, and reach the purpose of bulging workpiece.Traditional bulging preparation technology, reducing operation are after the bulging operation, and purpose is to be convenient to withdrawing from of core.This preparation technology's operation is many, and consumptive material is many, and efficient is low.
The preparation technology that two hemisphere is welded into the ball contact is the simplest, but can not stay potential safety hazard to the welding requirements of hemisphere, in order to reduce security risk, should increase and test welder's preface, thereby increase cost.
Summary of the invention
The preparation technology who the object of the present invention is to provide a kind of easy coreless necking bulging pressing to produce the ball contact, this preparation technology can reduce production costs significantly, raises the efficiency.
In order to address the above problem, the technical solution adopted in the present invention is:
Preparation technology's flow process of the present invention is: tubular blank → reducing → bulging → shaping → repair hole → stress-removal heat treatment → check → warehouse-in;
Concrete step of preparation process and parameter are as follows:
(1) preparation of blank:
Used blank is a tubular blank, can be to forge tubular blank, and the tubular blank that turning is processed into also can be to cut the tubular blank that forms by seamless pipe; The size of blank: L=1.57D-d
k
D ball contact overall diameter
d
kThe preformed hole diameter;
(2) reducing
The reducing operation is to be placed on before the bulging operation, reducing is carried out on mould, reducing is repeatedly reducing, reducing first, necking coefficient is controlled at 0.8～0.9, the control of necking coefficient realizes that by adjusting shut height unstability is not wrinkling to guarantee material, and repeatedly reducing after this is to carry out simultaneously with bulging; Total necking coefficient: K
s=d
n/ d
0
d
nThe internal diameter after the reducing repeatedly
d
0The internal diameter of tubular blank
The necking coefficient that the reducing operation is total: K
s=0.40～0.50;
(3) bulging
Self intensity of utilizing workpiece bulging and become the ball contact under the radial component effect that the axial compressive force of forcing press produces in mould; Workpiece after the reducing enters the bulging operation first, and the bulging operation is carried out simultaneously with repeatedly reducing operation, uses mould equally;
Bulge coefficient: K
z=d
Max/ d
0
d
MaxInternal diameter behind the bulging
d
0The internal diameter of tubular blank
The bulge coefficient of bulging operation of the present invention: K
z=1.05～1.10;
(4) shaping
Under the punching press effect of forcing press, carry out shaping, carry out school circle and finishing;
(5) repair the hole
Repair the hole by rolling mouth or turning operation, with the hole that the two poles of the earth reducing of ball contact north and south stays, the preparation technology who is processed as handrail pore or cross bar pore or steel railing heat dip zinc treating is leaked zinc hole usefulness, and makes its aperture meet instructions for use;
(6) stress-removal heat treatment
Because metaplasia and stress that the cold stamping distortion causes gather, can make workpiece cracking or distortion, so stress-removal heat treatment is considered as the effective measures that safety is removed a hidden danger;
For the carbon steel or low alloy steel material, the stress-removal heat treating regime is 560～600 ℃ of heating, is incubated 20 minutes, air cooling;
(7) after the above-mentioned operation,, become production combined type ball and connect the ball contact that railing is used, enter subsequent processing by check, warehouse-in.
The present invention with respect to the beneficial effect of prior art is: 1. at tubular blank through reducing, bulging, shaping does not adopt sectional type movable punch, rubber, polyamine fat or liquid etc. to make the axial compressive force of forcing press be converted into conventional method to the radial pressure of workpiece bulging as chipware until the punching course of balling-up contact, but directly by special Stamping Die Design, utilize self intensity of workpiece under the axial compressive force effect of forcing press, to produce radially bulging and become the ball contact, preparation technology is simple, the efficient height, the yield rate height; 2. adopt after the ball contact moulding of this preparation technology processing, in the hole that the reducing of the two poles of the earth, north and south stays, the preparation technology who can be used for processing handrail pore or cross bar pore or steel railing heat dip zinc treating is leaked the zinc hole and is used; 3. the ball contact with manufacturing of the present invention is seamless, adds stress-removal heat treatment, has improved the security of products energy.
Description of drawings
Fig. 1 is a process chart;
The mould that Fig. 2 adopts for processing;
Fig. 3 connects position in the railing post for the ball contact at ball.
The specific embodiment
Below by embodiment the present invention is described in further details, these embodiment only are used for illustrating the present invention, do not limit the scope of the invention.
Embodiment 1
A kind of combined type ball meets ball contact and the preparation preparation technology thereof that railing is used, and its preparation technology's flow process is as follows:
Tubular blank → reducing → bulging → shaping → repair hole → stress-removal heat treatment → check → warehouse-in;
Concrete step of preparation process and parameter are as follows:
(1) preparation of blank:
The used blank of this preparation technology is a tubular blank, can be to forge tubular blank, and the tubular blank that turning is processed into also can be to cut the tubular blank that forms by seamless pipe; The size of blank: L=1.57D-d
k
D ball contact overall diameter
d
kThe preformed hole diameter;
(2) reducing
This preparation technology, the reducing operation is to be placed on before the bulging operation, reducing is carried out on mould, reducing is repeatedly reducing, reducing first, necking coefficient is controlled at 0.8～0.9, and the control of necking coefficient realizes by adjusting shut height, unstability is not wrinkling to guarantee material, and repeatedly reducing after this is to carry out simultaneously with bulging; Total necking coefficient: K
s=d
n/ d
0
d
nThe internal diameter after the reducing repeatedly
d
0The internal diameter of tubular blank
The total necking coefficient of this preparation technology's reducing operation: K
s=0.40;
(3) bulging
This preparation technology bulging that is self intensity of utilizing workpiece under the radial component effect that the axial compressive force of forcing press produces in mould and become the ball contact; Workpiece after the reducing enters the bulging operation first, and the bulging operation is carried out simultaneously with repeatedly reducing operation, uses mould equally; Bulge coefficient: K
z=d
Max/ d
0
d
MaxInternal diameter behind the bulging
d
0The internal diameter of tubular blank
The bulge coefficient of this bulging operation: K
z=1.05;
(4) shaping
Under the punching press effect of forcing press, carry out shaping, carry out school circle and finishing;
(5) repair the hole
Repair the hole by rolling mouth or turning operation, with the hole that the two poles of the earth reducing of ball contact north and south stays, the preparation technology who is processed as handrail pore or cross bar pore or steel railing heat dip zinc treating is leaked zinc hole usefulness, and makes its aperture meet instructions for use;
(6) stress-removal heat treatment
Because metaplasia and stress that the cold stamping distortion causes gather, can make workpiece cracking or distortion, so stress-removal heat treatment is considered as the effective measures that safety is removed a hidden danger;
For the carbon steel or low alloy steel material, the stress-removal heat treating regime is 560 ℃ of heating, is incubated 20 minutes, air cooling;
(7) after the above-mentioned operation, just can become production combined type ball and connect the ball contact that railing is used, enter subsequent processing by the check warehouse-in.
Embodiment 2
A kind of combined type ball meets ball contact and the preparation preparation technology thereof that railing is used, and its preparation technology's flow process is as follows:
Tubular blank → reducing → bulging → shaping → repair hole → stress-removal heat treatment → check → warehouse-in;
Concrete step of preparation process and parameter are as follows:
(1) preparation of blank:
The used blank of this preparation technology is a tubular blank, can be to forge tubular blank, and the tubular blank that turning is processed into also can be to cut the tubular blank that forms by seamless pipe; The size of blank: L=1.57D-d
k
D ball contact overall diameter
d
kThe preformed hole diameter;
(2) reducing
This preparation technology, the reducing operation is to be placed on before the bulging operation, reducing is carried out on mould, reducing is repeatedly reducing, reducing first, necking coefficient is controlled at 0.8～0.9, and the control of necking coefficient realizes by adjusting shut height, unstability is not wrinkling to guarantee material, and repeatedly reducing after this is to carry out simultaneously with bulging; Total necking coefficient: K
s=d
n/ d
0
d
nThe internal diameter after the reducing repeatedly
d
0The internal diameter of tubular blank
The total necking coefficient of this preparation technology's reducing operation: K
s=0.50;
(3) bulging
This preparation technology bulging that is self intensity of utilizing workpiece under the radial component effect that the axial compressive force of forcing press produces in mould and become the ball contact; Workpiece after the reducing enters the bulging operation first, and the bulging operation is carried out simultaneously with repeatedly reducing operation, uses mould equally; Bulge coefficient: K
z=d
Max/ d
0
d
MaxInternal diameter behind the bulging
d
0The internal diameter of tubular blank
The bulge coefficient of this bulging operation: K
z=1.10;
(4) shaping
Under the punching press effect of forcing press, carry out shaping, carry out school circle and finishing;
(5) repair the hole
Repair the hole by rolling mouth or turning operation, with the hole that the two poles of the earth reducing of ball contact north and south stays, the preparation technology who is processed as handrail pore or cross bar pore or steel railing heat dip zinc treating is leaked zinc hole usefulness, and makes its aperture meet instructions for use;
(6) stress-removal heat treatment
Because metaplasia and stress that the cold stamping distortion causes gather, can make workpiece cracking or distortion, so stress-removal heat treatment is considered as the effective measures that safety is removed a hidden danger;
For the carbon steel or low alloy steel material, the stress-removal heat treating regime is 600 ℃ of heating, is incubated 20 minutes, air cooling;
(7) after the above-mentioned operation, just can become production combined type ball and connect the ball contact that railing is used, enter subsequent processing by the check warehouse-in.
Claims (4)
1. a coreless necking bulging pressing is produced the preparation technology of ball contact, and it is characterized in that: preparation technology's flow process is as follows: tubular blank → reducing → bulging → shaping → repair hole → stress-removal heat treatment → check → warehouse-in;
Concrete step of preparation process and parameter are as follows:
(1) preparation of blank:
The used blank of technology is a tubular blank; The size of blank: L=1.57D-d
k
D ball contact overall diameter
d
kThe preformed hole diameter;
(2) reducing
The reducing operation is to be placed on before the bulging operation, and repeatedly reducing, reducing are first carried out in reducing on mould, necking coefficient is controlled at 0.8～0.9, necking coefficient is by adjusting shut height control, and unstability is not wrinkling to guarantee material, and after this repeatedly reducing and bulging carry out simultaneously; Total necking coefficient: K
s=d
n/ d
0
d
nThe internal diameter after the reducing repeatedly
d
0The internal diameter of tubular blank
The necking coefficient that the reducing operation is total: K
s=0.40～0.50;
(3) bulging
Self intensity of utilizing workpiece bulging and become the ball contact under the radial component effect that the axial compressive force of forcing press produces in mould; Workpiece after the reducing enters the bulging operation first, and the bulging operation is carried out simultaneously with repeatedly reducing operation, uses mould equally; Bulge coefficient: K
z=d
Max/ d
0
d
MaxInternal diameter behind the bulging
d
0The internal diameter of tubular blank
The bulge coefficient of bulging operation: K
z=1.05～1.10;
(4) shaping
Under the punching press effect of forcing press, carry out shaping, carry out school circle and finishing;
(5) repair the hole
Repair the hole by rolling mouth or turning operation, with the hole that the two poles of the earth reducing of ball contact north and south stays, the preparation technology who is processed as handrail pore or cross bar pore or steel railing heat dip zinc treating is leaked zinc hole usefulness, and makes its aperture meet instructions for use;
(6) stress-removal heat treatment
Metaplasia and stress that the cold stamping distortion causes gather, and use the stress-removal stress-relieving by beat treatment, prevent workpiece cracking or distortion;
Stress-removal heat treatment preparation technology is: place heating furnace to be heated to assigned temperature workpiece, insulation certain hour, the cooling of coming out of the stove then;
Stress-removal heat treatment preparation technology is: place heating furnace to be heated to assigned temperature workpiece, insulation certain hour, the cooling of coming out of the stove then.
For the carbon steel or low alloy steel material, the stress-removal heat treating regime is 560～600 ℃ of heating, is incubated 20 minutes, air cooling;
(7) after the above-mentioned operation, just can become production combined type ball and connect the ball contact that railing is used, enter subsequent processing by the check warehouse-in.
2. a kind of coreless necking bulging pressing according to claim 1 is produced the preparation technology of ball contact, it is characterized in that described tubular blank cuts the tubular blank that forms for the tubular blank that forges tubular blank, turning and be processed into or by seamless pipe.
3. a kind of coreless necking bulging pressing according to claim 1 is produced the preparation technology of ball contact, it is characterized in that described ball contactor material is ordinary steel, stainless steel, aluminium alloy or Cu alloy material.
4. the described coreless necking bulging of claim 1 pressing is produced the preparation technology of ball contact, it is characterized in that adopting the ball contact of this technology preparation, is used for the combined type ball that safe building enclosure uses and connects railing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101940668A CN101700553B (en) | 2009-11-23 | 2009-11-23 | Manufacture technology of ball connection point with coreless necking bulging pressing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101940668A CN101700553B (en) | 2009-11-23 | 2009-11-23 | Manufacture technology of ball connection point with coreless necking bulging pressing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101700553A CN101700553A (en) | 2010-05-05 |
| CN101700553B true CN101700553B (en) | 2011-11-02 |
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ID=42155491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101940668A Active CN101700553B (en) | 2009-11-23 | 2009-11-23 | Manufacture technology of ball connection point with coreless necking bulging pressing method |
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|---|---|
| CN (1) | CN101700553B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319827A (en) * | 2011-07-14 | 2012-01-18 | 燕山大学 | Expansion pressure forming method of steel tube for axle housing of mini car |
| CN102319826A (en) * | 2011-07-14 | 2012-01-18 | 燕山大学 | Steel tube swelling press forming method for large-sized automobile axle housing |
| CN103234109B (en) * | 2013-05-16 | 2016-01-13 | 奇瑞汽车股份有限公司 | A kind of slide block safety protective equipment of servo seat-grinding pressure machine and installation method |
| CN114718261B (en) * | 2022-05-24 | 2023-11-10 | 自贡东方彩钢结构有限公司 | Fixed ball joint railing installation structure and installation method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031493A (en) * | 1987-08-24 | 1989-03-08 | 刘东旺 | Production method of spherical pressure container |
| CN1079681A (en) * | 1992-08-28 | 1993-12-22 | 王万里 | A kind of cold stamping shaping method |
| CN2235333Y (en) * | 1995-12-29 | 1996-09-18 | 浙江大学 | Hydraulic expansion and formation machine |
| CN1380149A (en) * | 2002-05-30 | 2002-11-20 | 佛山市佳能事液压机器制造有限公司 | Expanding method and equipment for implementing said expanding method |
| CN101234464A (en) * | 2008-01-22 | 2008-08-06 | 西安交通大学 | Ball valve core hydraulic expansion method |
| CN201189534Y (en) * | 2008-05-22 | 2009-02-04 | 中钢集团烟台钢格板有限公司 | Rail node ball stamping die |
-
2009
- 2009-11-23 CN CN2009101940668A patent/CN101700553B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031493A (en) * | 1987-08-24 | 1989-03-08 | 刘东旺 | Production method of spherical pressure container |
| CN1079681A (en) * | 1992-08-28 | 1993-12-22 | 王万里 | A kind of cold stamping shaping method |
| CN2235333Y (en) * | 1995-12-29 | 1996-09-18 | 浙江大学 | Hydraulic expansion and formation machine |
| CN1380149A (en) * | 2002-05-30 | 2002-11-20 | 佛山市佳能事液压机器制造有限公司 | Expanding method and equipment for implementing said expanding method |
| CN101234464A (en) * | 2008-01-22 | 2008-08-06 | 西安交通大学 | Ball valve core hydraulic expansion method |
| CN201189534Y (en) * | 2008-05-22 | 2009-02-04 | 中钢集团烟台钢格板有限公司 | Rail node ball stamping die |
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| Publication number | Publication date |
|---|---|
| CN101700553A (en) | 2010-05-05 |
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