CN107838275A - It is a kind of to rush rod and its manufacture method for nut piercing - Google Patents
It is a kind of to rush rod and its manufacture method for nut piercing Download PDFInfo
- Publication number
- CN107838275A CN107838275A CN201710847927.2A CN201710847927A CN107838275A CN 107838275 A CN107838275 A CN 107838275A CN 201710847927 A CN201710847927 A CN 201710847927A CN 107838275 A CN107838275 A CN 107838275A
- Authority
- CN
- China
- Prior art keywords
- rod
- drift
- installation portion
- connecting portion
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/34—Perforating tools; Die holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/24—Making other particular articles nuts or like thread-engaging members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
Rod is rushed for nut piercing the invention provides a kind of, belongs to field of mechanical technique, it solves the problems, such as existing punching rod low intensity.This rod that rushes for being used for nut piercing includes：Body, has the installation portion, the supporting part that are connected as a single entity, and the diameter of installation portion is less than the diameter of supporting part and installation portion arc transition is to supporting part；Drift, it is installed in installation portion and deviates from supporting part one end, drift is made of wolfram steel material, and in punch head surface covered with plating titanium layer.The present invention has the characteristics of intensity is high.Invention additionally discloses a kind of above-mentioned manufacture method for rushing rod for nut piercing.
Description
Technical field
The invention belongs to field of mechanical technique, be related to it is a kind of rush rod for nut piercing, particularly a kind of high intensity is used for
Rod is rushed in nut piercing.
Background technology
In the cold-heading molding technique of nut, material need to pass through multimode Pressing Deformation to punching, just complete nut semi-finished product
Shaping, complete product is obtained finally by tapping is carried out to semi-finished product nut.Wherein, the quality of semi-finished product nut inner hole, certainly
The precision of nut inner thread is determined.
In the punching operation of nut, punching rod serves the effect of key, because high strength nut material is mostly height
Carbon steel and steel alloy, hardness is higher, and the material hardness of punching rod is relatively common, therefore can not bear height for a long time in punching
Gentle impact friction, punching rod are easy to that abrasion deformation occurs, and then cause nut inner hole in shaping to deform, and endoporus is once
Deformation can then cause the screw thread of following process also to deform therewith.Consequently, it is possible to the precision of nut does not just reach being actually subjected to for product
Ask, cause the waste of material, increase production cost.
In addition, the surface roughness of existing punching rod is mostly not ideal enough, the precision of the nut inner hole after shaping is relative
Relatively low, so as to cause the precision of the screw thread after nut shaping inadequate, product quality is not ideal enough, thus researches and develops the punching of high quality
Rod is the premise of hoisting nut quality.
In summary, to solve the deficiency in the punching rod structure in existing nut shaping, the invention provides one kind to set
Meter rationally, the high nut piercing that is used for of intensity rush rod.
The content of the invention
The present invention is solves the problems, such as that prior art is present, there is provided a kind of reasonable in design, intensity it is high for nut piercing
Rush rod.
The purpose of the present invention can be achieved through the following technical solutions：A kind of rod that rushes for nut piercing, including：
Body, has installation portion, the supporting part being connected as a single entity, and the diameter of installation portion is less than the diameter and installation portion circular arc of supporting part
Transit to supporting part；
Drift, it is installed in installation portion and deviates from supporting part one end, the drift is made of wolfram steel material, and is covered in punch head surface
There is plating titanium layer.
As the further improvement of this case, the drift includes connecting portion, the pressing part set gradually, connecting portion and installation
Portion is welded to connect and the diameter of connecting portion is equal with the diameter of installation portion, the connecting portion arc transition to pressing part, the punching
Splenium is more than the diameter of connecting portion in the diameter of frustum setting and pressing part close to connecting portion side.
Another step as this case is improved, and connecting portion part is embedded in installation portion, and connecting portion closely pastes with installation portion
Close.
A kind of manufacture method for rushing rod for nut piercing, comprise the following steps that：
High-speed steel blanking, the first base of cold-heading molding, is then roughly ground again after heat treatment contoured body to first base；
Wolfram steel blanking, high temperature cast to form drift；
Drift is embedded on body, and drift and body are welded to connect to be formed and rush rod；
Rod will be rushed after welding it is placed in grinder and carries out refining work；
Rod is most rushed at last being placed in titanizing stove and drift is carried out to nitrogenize titanizing processing, temperature is 800-1200 DEG C.
As the further improvement of this case, in above-mentioned four steps, fine grinding precision is ± 0.002.
As the further improvement of this case, in above-mentioned 5th step, punch head surface coefficient of friction after titanizing for μ=
0.4。
Compared with prior art, the present invention is reasonable in design, using body and drift welded structure form, while
Plating nitride titanium processing is carried out on drift, so as to improve the hardness for rushing club head, the abrasion of rod at work is rushed in reduction, is improved and is used
Life-span；In addition, the finish of punch head surface can be improved after drift titanizing, be advantageous to improve the surface accuracy of nut inner hole.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
In figure, 10, body；11st, installation portion；12nd, supporting part；20th, drift；21st, connecting portion；22nd, pressing part.
Embodiment
With reference to embodiment and accompanying drawing, technical scheme is further elaborated.
As shown in figure 1, this rod that rushes for being used for nut piercing includes：
Body 10, has the installation portion 11, the supporting part 12 that are connected as a single entity, the diameter of installation portion 11 be less than the diameter of supporting part 12 and
The arc transition of installation portion 11 is to supporting part 12；
Drift 20, it is installed in installation portion 11 and deviates from the one end of supporting part 12, drift 20 is made of wolfram steel material, and in the table of drift 20
Face is covered with plating titanium layer.
Because high strength nut material is mostly high-carbon steel and steel alloy, hardness is higher, and the material hardness of punching rod compared with
To be common, high temperature and impact friction can not be born for a long time in punching, punching rod is easy to that abrasion deformation occurs, and then causes
Nut inner hole and the screw thread of following process deform in shaping, and the precision of nut does not reach the actual requirement of product, punching
The surface roughness of rod is mostly not ideal enough, and the precision of the nut inner hole after shaping is relatively low, production cost height and product matter
Measure not ideal enough.
Therefore, the present invention devise it is a kind of rush rod for nut piercing, be fixedly connected with drift 20 using body 10
Structure type, setting drift 20 is made up of wolfram steel material and the titanizing on drift 20, so as to improve the hardness for rushing club head, reduces
Rush the abrasion of rod at work.Rod is more resistant, and service life is longer for rushing embedded with wolfram steel, and rushes rod and have higher machining accuracy
And indeformable, resistant to elevated temperatures characteristic, nut quality after punching is good, precision is high.
Wherein body 10 is made up of installation portion 11, the supporting part 12 set gradually, rushes rod on punching die, actual
It is that supporting part 12 is connected with mould associated components, wherein the diameter of installation portion 11 is less than the diameter of supporting part 12 and installation portion 11 is justified
Arc transits to supporting part 12, and installation portion 11 is used for the drift 20 that is connected, and so setting to ensure to increase the structural stability of body 10
While and can and the good connection of drift 20, be convenient for punching.
Preferably, drift 20 includes connecting portion 21, the pressing part 22 set gradually, and connecting portion 21 connects with the welding of installation portion 11
Connect and the diameter of connecting portion 21 is equal with the diameter of installation portion 11, the arc transition of connecting portion 21 to pressing part 22, pressing part 22 is in
The diameter of frustum setting and pressing part 22 close to the side of connecting portion 21 is more than the diameter of connecting portion 21.
Specifically, drift 20 is made up of connecting portion 21 and the integral molding of pressing part 22, connecting portion 21 welds with installation portion 11
Connect in succession, it is ensured that drift 20 is completely embedded with body 10 and firmly, well can be punched out work.Connecting portion 21 is equally round
Arc transits to pressing part 22, and diameter of the pressing part 22 close to the side of connecting portion 21 is more than the diameter of connecting portion 21, so sets energy
Cushioning effect can also be played in punching simultaneously by enough improving the structural stability of drift 20, mitigate the pressure that drift 20 is subject to.
To ensure the Forming Quality of punching, set the diameter of connecting portion 21 equal with the diameter of installation portion 11, it is ensured that punching
Axiality, be easy to follow-up screw thread process.Pressing part 22 sets then to be easy for rushing rod and nut is punched out in frustum, energy
Punch work is enough rapidly completed, improves operating efficiency.
Further, the part of connecting portion 21 is embedded in installation portion 11, and connecting portion 21 is brought into close contact with installation portion 11.For
Ensure the firm connection between body 10 and drift 20, set connecting portion 21 to be partially submerged into installation portion 11, realize connecting portion 21 with
Position positioning between installation portion 11, ensure that the end face relative with installation portion 11 of connecting portion 21 is brought into close contact, subsequently pass through weldering again
One, the mode machine connect ensures that body 10 is connected firmly with drift 20, at a high speed, in the punch work of high intensity, make to rush rod holding
The stability of structure, be advantageous to being smoothed out for punch work.
Present invention also offers a kind of manufacture method for rushing rod for nut piercing, comprise the following steps that：
The first step：High-speed steel blanking, the first base of cold-heading molding, is then roughly ground again after heat treatment contoured body 10 to first base；
Body 10 uses high speed steel material, is made up of cold-heading molding technique, not easy to break in punch work.In the present embodiment
It is preferred that high speed steel material model SKH55, specific high speed steel pattern number can be selected according to being actually needed, do not limited herein
It is fixed.
Second step：Wolfram steel blanking, high temperature cast to form drift 20；
Wolfram steel hardness is relatively hard, can reduce the abrasion in punching using drift made of wolfram steel 20, making for rod is rushed in raising
With the life-span, while ensure good punching quality.Preferred wolfram steel model ST7 herein, its hardness reaches HRA84-86, actual raw
During production, wolfram steel model is selected as needed, is not construed as limiting herein.
3rd step：Drift 20 is embedded on body 10, and drift 20 and body 10 are welded to connect to be formed and rush rod；
Body 10 is set further to be connected surely with drift 20 together with the body 10 made is inlayed with drift 20 and by welding
Gu, it is ensured that rush the overall structural stability of rod.
4th step：Rod will be rushed after welding it is placed in grinder and carries out refining work；
After the completion of welding, rod will be rushed it is positioned in grinder and refined, fine grinding is carried out for entirely rushing rod herein,
Preferred fine grinding precision is ± 0.002 in embodiment, ensures that the integral surface for rushing rod is smooth, reduces friction during punching.
5th step：Rod is most rushed at last being placed in titanizing stove, drift 20 is carried out to nitrogenize titanizing processing, temperature 800-1200
℃。
After refining work, rod will be rushed and be positioned in titanizing stove, in the case where temperature is 800-1200 DEG C of scope to drift 20
Carry out nitridation titanizing to handle, in the present embodiment preferably after titanizing, realize that the hardness of plating titanium layer reaches HV2200, and the table of drift 20
Face coefficient of friction is μ=0.4.
Rush rod structure compared to common, the processing of the ti coat on diamond of drift 20 can in punching reducing friction resistance, make spiral shell
Female endoporus can be pierced with Glabrous, improve the machining accuracy to follow-up screw thread；Hardness is increased simultaneously, increases wearability, greatly
It is big to improve surface abrasion resistance, corrosion resisting property etc., effectively improve and rush rod（Mould）Service life.
This be used for nut piercing to rush rod reasonable in design, using body 10 and the welded structure form of drift 20, together
When plating nitride titanium processing is carried out on drift 20, so as to improve the hardness for rushing club head, the abrasion of rod at work is rushed in reduction, is carried
High service life；In addition, the finish on the surface of drift 20 can be improved after the titanizing of drift 20, be advantageous to improve the table of nut inner hole
Face precision.
Described herein is only the preferred embodiment of the present invention, but protection scope of the present invention is not limited to
This.Those skilled in the art in the invention are to the modification of described specific embodiment progress or supplement or use similar side
Formula is replaced, and all should be covered by within protection scope of the present invention.
Claims (6)
1. a kind of rush rod for nut piercing, it is characterised in that including：
Body, has installation portion, the supporting part being connected as a single entity, and the diameter of installation portion is less than the diameter and installation portion circular arc of supporting part
Transit to supporting part；
Drift, it is installed in installation portion and deviates from supporting part one end, the drift is made of wolfram steel material, and is covered in punch head surface
There is plating titanium layer.
2. a kind of rod is rushed according to claim 1 for nut piercing, it is characterised in that the drift includes setting successively
Connecting portion, the pressing part put, connecting portion is welded to connect with installation portion and the diameter of connecting portion is equal with the diameter of installation portion, described
Connecting portion arc transition is to pressing part, and the pressing part is set in frustum and diameter of the pressing part close to connecting portion side is more than
The diameter of connecting portion.
3. a kind of rod is rushed according to claim 2 for nut piercing, it is characterised in that connecting portion part is embedded is pacifying
In dress portion, and connecting portion is brought into close contact with installation portion.
4. a kind of manufacture method for rushing rod for nut piercing, it is characterised in that comprise the following steps that：
High-speed steel blanking, the first base of cold-heading molding, is then roughly ground again after heat treatment contoured body to first base；
Wolfram steel blanking, high temperature cast to form drift；
Drift is embedded on body, and drift and body are welded to connect to be formed and rush rod；
Rod will be rushed after welding it is placed in grinder and carries out refining work；
Rod is most rushed at last being placed in titanizing stove and drift is carried out to nitrogenize titanizing processing, temperature is 800-1200 DEG C.
5. a kind of manufacture method for rushing rod for nut piercing according to claim 4, it is characterised in that above-mentioned
In four steps, fine grinding precision is ± 0.002.
6. a kind of manufacture method for rushing rod for nut piercing according to claim 4, it is characterised in that above-mentioned
In five steps, the punch head surface coefficient of friction after titanizing is μ=0.4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710847927.2A CN107838275A (en) | 2017-09-19 | 2017-09-19 | It is a kind of to rush rod and its manufacture method for nut piercing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710847927.2A CN107838275A (en) | 2017-09-19 | 2017-09-19 | It is a kind of to rush rod and its manufacture method for nut piercing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107838275A true CN107838275A (en) | 2018-03-27 |
Family
ID=61661311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710847927.2A Pending CN107838275A (en) | 2017-09-19 | 2017-09-19 | It is a kind of to rush rod and its manufacture method for nut piercing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107838275A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482731A (en) * | 2018-10-31 | 2019-03-19 | 蓬溪河冶高科有限责任公司 | A kind of bar single-point punching press red needle and its processing technology |
| CN113020526A (en) * | 2021-03-08 | 2021-06-25 | 哈尔滨轴承集团公司 | Bearing forging die forming punch |
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| CN2447081Y (en) * | 2000-08-15 | 2001-09-12 | 顺兴达股份有限公司 | Punching die |
| CN201361660Y (en) * | 2009-03-02 | 2009-12-16 | 扬州恒德模具有限公司 | Coated die of numerical control punching machine |
| CN202427823U (en) * | 2011-12-19 | 2012-09-12 | 中国兵器工业第五二研究所 | High hardness abrasion-resisting stamping punch |
| CN202570810U (en) * | 2012-04-27 | 2012-12-05 | 广东科达机电股份有限公司 | Split type extrusion punch |
| CN204122590U (en) * | 2014-07-31 | 2015-01-28 | 广州聚森精密模具有限公司 | Novel die drift |
-
2017
- 2017-09-19 CN CN201710847927.2A patent/CN107838275A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2447081Y (en) * | 2000-08-15 | 2001-09-12 | 顺兴达股份有限公司 | Punching die |
| CN201361660Y (en) * | 2009-03-02 | 2009-12-16 | 扬州恒德模具有限公司 | Coated die of numerical control punching machine |
| CN202427823U (en) * | 2011-12-19 | 2012-09-12 | 中国兵器工业第五二研究所 | High hardness abrasion-resisting stamping punch |
| CN202570810U (en) * | 2012-04-27 | 2012-12-05 | 广东科达机电股份有限公司 | Split type extrusion punch |
| CN204122590U (en) * | 2014-07-31 | 2015-01-28 | 广州聚森精密模具有限公司 | Novel die drift |
Non-Patent Citations (1)
| Title |
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| 胡树兵等: ""TiN涂层在模具上的应用"", 《机械工人（热加工）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482731A (en) * | 2018-10-31 | 2019-03-19 | 蓬溪河冶高科有限责任公司 | A kind of bar single-point punching press red needle and its processing technology |
| CN113020526A (en) * | 2021-03-08 | 2021-06-25 | 哈尔滨轴承集团公司 | Bearing forging die forming punch |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180327 |
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| RJ01 | Rejection of invention patent application after publication |