CN103658220A - Extrusion punching head for thin-wall aluminum tube - Google Patents
Extrusion punching head for thin-wall aluminum tube Download PDFInfo
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- CN103658220A CN103658220A CN201310750653.7A CN201310750653A CN103658220A CN 103658220 A CN103658220 A CN 103658220A CN 201310750653 A CN201310750653 A CN 201310750653A CN 103658220 A CN103658220 A CN 103658220A
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Abstract
The invention discloses an extrusion punching head for a thin-wall aluminum tube with the advantages that longitudinal burrs cannot be generated, and in addition, the manufacturing cost is reduced. The extrusion punching head comprises an independent punching head main body, a head part core rod and a connecting screw bolt, wherein a step-shaped blind hole is formed in the head part end surface of the punching head main body, an inner small hole of the step-shaped blind hole is a threaded hole, an outer large hole is a straight round hole, the depth of the inner small hole is twice of the depth of the outer large hole, the head part core rod is a hollow rod, the outer round surface of the head part core rod is a cylindrical surface with small diameters at the upper and lower parts and the large diameter in the middle, the diameter of the middle outer circle of the head core rod is matched with the diameter of the outer circle of the punching head main body, the diameter and the length of the outer circle of the upper part of the head part core rod are matched with the inner diameter and the depth of the outer large hole of the punching head main body in a one-to-one correspondence way, the inner hole of the head part core rod is a threaded counterbore, and after the outer large hole of the punching head main body is embedded on the upper part of the head part core rod, the connecting screw bolt is connected in the threaded counterbore of the head part core rod and the inner small hole of the punching head main body through screw threads.
Description
Technical field
The present invention relates to a kind of extruding drift, be specifically related to a kind of extruding drift for thin-walled aluminum barrel.
Background technology
Thin-walled aluminum barrel is to adopt an extrusion modling of annular blank part.In the process of extruding thin-walled aluminum barrel for the bottom of forming thin-walled aluminum barrel is hollow, extruding drift is made to stepped cylinder, the head at drift is provided with the head plug that one section of diameter is less than punch body, and this head plug and punch body are overall structure (see figure 1).In actual production, due to the concentrated cause of stress, head plug 11 is easy to fracture with the transition shoulder place of punch body 10, causes whole drift to scrap, and affects manufacturing schedule.Because the length of drift is long and adopt high strength steel to make, thus the material cost of drift and cost of manufacture all higher.At present, adopt in the industry the Split assembled structure of head plug and punch body, by connecting bolt 12 ', head plug 11 ' is longitudinally connected to the head (see figure 2) of punch body 10 '.Although this Split assembled structure can only need to change head plug 11 ' after head plug 11 ' fractures, and has effectively reduced the waste of material.In the head end of the punch body 10 ' of this structure, offer a step blind hole, the inner aperture of this step blind hole is screwed hole, and external macro pores is straight circular hole, and the degree of depth of this macropore be head plug 11 ' length 1/2nd; Head plug 11 ' is hollow right circular cylinder, the internal diameter of the outside diameter of this head plug 11 ' and the external macro pores of punch body 10 ' is adaptive, the endoporus of this head plug 11 ' is countersunk threaded, when the top of head plug 11 ', insert after the external macro pores of punch body 10 ', connecting bolt 12 is threaded in the countersunk threaded of head plug 11 ' and the aperture of punch body 10 '.This longitudinal fit advantage connecting is easy to process, but when reality is used, owing to having split gap between the cylindrical of head plug 11 ' and the external macro pores of punch body 10 ', even if gap is less, under the effect of the high pressure when extruding, aluminium is easy to get in this gap, makes to form longitudinal burr on thin-walled aluminum barrel extrusion modling part, affects the quality of product.
Summary of the invention
The object of the invention is to overcome the defect of prior art, a kind of extruding drift for thin-walled aluminum barrel is provided, it has overcome the defect that existing head plug and punch body longitudinal connection structure produce longitudinal burr aborning, and when fractureing, head plug easily changes, greatly reduce the cost of manufacture of drift, guaranteed normally carrying out of production.
The object of the present invention is achieved like this: a kind of extruding drift for thin-walled aluminum barrel, comprise independently punch body, head plug and connecting bolt, wherein,
In the head end of described punch body, offer a step blind hole, the inner aperture of this step blind hole is screwed hole, and external macro pores should be straight circular hole, the twice of the degree of depth that the degree of depth of this inner aperture is external macro pores;
Described head plug is hollow bar, the periphery of this head plug is the face of cylinder that upper and lower part diameter is little, middle part diameter is large, outside the middle part of this head plug, the outside diameter of diameter of a circle and described punch body is adaptive, outside the top of this head plug diameter of a circle and length correspondingly with internal diameter and the depth adaptation of the external macro pores of described punch body, the endoporus of this head plug is countersunk threaded;
On the top of described head plug, embed after the external macro pores of described punch body, described connecting bolt is threaded in the countersunk threaded of head plug and the inner aperture of punch body.
The above-mentioned extruding drift for thin-walled aluminum barrel, wherein, the monolateral gap between the top periphery of described head plug and the external macro pores face of described punch body is 0.1mm.
The above-mentioned extruding drift for thin-walled aluminum barrel, wherein, outside the upper and lower part of described head plug, diameter of a circle is identical.
Extruding drift for thin-walled aluminum barrel of the present invention, adopt the horizontal Split assembled structure of head plug and punch body, and head plug connects in the mode being laterally connected by connecting bolt with punch body, make by connecting plane, to transmit squeeze pressure between head plug and punch body, overcome the defect that existing head plug and punch body longitudinal connection structure produce longitudinal burr aborning, simultaneously when head plug fractures, easily change head plug, effectively reduced the waste of material, greatly reduce the cost of drift, guaranteed normally carrying out of production.
Accompanying drawing explanation
Fig. 1 is the structural representation of the extruding drift for thin-walled aluminum barrel of the first prior art;
Fig. 2 is the structural representation of the extruding drift for thin-walled aluminum barrel of the second prior art;
Fig. 3 is the structural representation of the extruding drift for thin-walled aluminum barrel of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Refer to Fig. 3, a kind of extruding drift for thin-walled aluminum barrel of the present invention, comprises independently punch body 10 ' ', head plug 11 ' ' and connecting bolt 12, wherein:
Punch body 10 ' ' head end on offer a step blind hole, the inner aperture of this step blind hole is screwed hole, external macro pores should be straight circular hole, the twice of the depth H that the degree of depth of this inner aperture is external macro pores; Punch body 10 ' ' adopt high strength steel, due to more than punch length reaches 500mm, in order to keep its rigidity, hardness will reach HRC62;
The periphery of head plug 11 ' ' be hollow bar, this head plug 11 ' ' is the face of cylinder that upper and lower part diameter is little, middle part diameter is large, and this head plug 11 ' ' the diameter of upper and lower part cylindrical Φ identical; Diameter of a circle and punch body 10 ' outside the middle part of this head plug 11 ' outside diameter adaptive, this head plug 11 ' ' the diameter of phi of top cylindrical and length be countersunk threaded with the endoporus of punch body 10 ' ' internal diameter and the depth H of external macro pores adaptive, this head plug 11 ' ' correspondingly;
In the inner aperture that after the external macro pores of ' top insert punch main body 10 ' ', connecting bolt 12 is threaded in head plug 11 ' when head plug 11 ' ' countersunk threaded and punch body 10 ' '.
Concentricity in order to guarantee head plug 11 ' between ' and punch body 10 ' ', monolateral between the external macro pores face of head plug 11 ' ' top periphery and punch body 10 ' ' has the gap while fractureing (if gap is too small, at head plug 11 ' ' can be difficult for taking out) of 0.1mm.
Punch body finally with after being connected head and being connected is carried out processing grinding and the polishing of connecting portion again.
Connecting bolt 12 adopts high-strength bolt.
Above embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present invention, should be limited by each claim.
Claims (3)
1. for an extruding drift for thin-walled aluminum barrel, comprise independently punch body, head plug and connecting bolt, it is characterized in that,
In the head end of described punch body, offer a step blind hole, the inner aperture of this step blind hole is screwed hole, and external macro pores should be straight circular hole, the twice of the degree of depth that the degree of depth of this inner aperture is external macro pores;
Described head plug is hollow bar, the periphery of this head plug is the face of cylinder that upper and lower part diameter is little, middle part diameter is large, outside the middle part of this head plug, the outside diameter of diameter of a circle and described punch body is adaptive, outside the top of this head plug diameter of a circle and length correspondingly with internal diameter and the depth adaptation of the external macro pores of described punch body, the endoporus of this head plug is countersunk threaded;
On the top of described head plug, embed after the external macro pores of described punch body, described connecting bolt is threaded in the countersunk threaded of head plug and the inner aperture of punch body.
2. the extruding drift for thin-walled aluminum barrel according to claim 1, is characterized in that, the monolateral gap between the top periphery of described head plug and the external macro pores face of described punch body is 0.1mm.
3. the extruding drift for thin-walled aluminum barrel according to claim 1, is characterized in that, outside the upper and lower part of described head plug, diameter of a circle is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310750653.7A CN103658220A (en) | 2013-12-31 | 2013-12-31 | Extrusion punching head for thin-wall aluminum tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310750653.7A CN103658220A (en) | 2013-12-31 | 2013-12-31 | Extrusion punching head for thin-wall aluminum tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103658220A true CN103658220A (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310750653.7A Pending CN103658220A (en) | 2013-12-31 | 2013-12-31 | Extrusion punching head for thin-wall aluminum tube |
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| CN (1) | CN103658220A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107617676A (en) * | 2017-10-24 | 2018-01-23 | 惠州市百思德精密部件有限公司 | The fixation of the weak drift of abnormity and quick change mould structure |
| CN110564936A (en) * | 2019-09-20 | 2019-12-13 | 西安聚行机电科技发展有限公司 | Whole-product hole cold extrusion strengthening method |
-
2013
- 2013-12-31 CN CN201310750653.7A patent/CN103658220A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107617676A (en) * | 2017-10-24 | 2018-01-23 | 惠州市百思德精密部件有限公司 | The fixation of the weak drift of abnormity and quick change mould structure |
| CN110564936A (en) * | 2019-09-20 | 2019-12-13 | 西安聚行机电科技发展有限公司 | Whole-product hole cold extrusion strengthening method |
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Application publication date: 20140326 |