CN103264062A - Hot-extrusion reaming head - Google Patents
Hot-extrusion reaming head Download PDFInfo
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- CN103264062A CN103264062A CN2013101986333A CN201310198633A CN103264062A CN 103264062 A CN103264062 A CN 103264062A CN 2013101986333 A CN2013101986333 A CN 2013101986333A CN 201310198633 A CN201310198633 A CN 201310198633A CN 103264062 A CN103264062 A CN 103264062A
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- reaming
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Abstract
The invention relates to a reaming head used for a ferrous metal hot-extrusion process, and in particular relates to a hot-extrusion reaming head. The hot-extrusion reaming head comprises a shearing column, wherein the lower end of the shearing column is connected with a reaming frustum, and the diameter of the reaming frustum is gradually reduced from top to bottom; the diameter of the upper end of the reaming frustum is same as the diameter of the shearing column; the lower end of the reaming frustum is connected with a guide frustum, and the diameter of the guide frustum is gradually reduced from top to bottom; and the diameter of the upper end of the guide frustum is same as the diameter of the lower end of the reaming frustum and the diameter of a pre-bored hole of a blank. In the placing process of the hot-extrusion reaming head, the reaming head can quickly center and is put in place accurately, so that the wall thickness of a reaming blank is uniform.
Description
Technical field
The invention belongs to ferrous metal extrusion process field, be specifically related to a kind of in extrusion process the application tool and mould of reaming operation.
Background technology
In the ferrous metal extrusion process, the reaming operation is the important step in the production process, and its objective is to extruder provides the extrusion billet with suitable endoporus.The reaming quality of the blank especially dimensional accuracy of reaming (the wall thickness uniformity that mainly refers to the reaming blank) influences the quality of extruded product.
In the prior art, two kinds of technologies are arranged in the reaming operation, a kind of is that reaming bar and reaming head connect together, and the reaming head is also referred to as dead end, has the problem of dismounting inconvenience, is mainly used in little staving press; A kind of is that reaming bar and reaming head are that separately the reaming head is also referred to as head alive, and advantage is easy accessibility, can recycle, and particularly is suitable for very much large-scale staving press.But the disadvantage of the head of living is that the reaming head is in free state in put procedure, the centering difficulty, for this reason, in the bottom design of reaming head lead, the diameter of the diameter of lead and blank prebored hole is complementary, but excesssive gap, to askew, the gap is too small easily, easily plug-hole, do not go under the reaming head, because the skew problem of reaming head, often cause the endoporus off-centre after the reaming, have a strong impact on the dimensional accuracy of extruded product.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of reaming head of new structure, makes it in put procedure, and the reaming head is centering rapidly, accurately puts in place, makes reaming blank wall thickness even.
Hot extrusion reaming head of the present invention, comprise the shearing post, the lower end of described shearing post connects the reaming frustum, described reaming frustum diameter from top to bottom dwindles gradually, the upper end diameter of reaming frustum is identical with the diameter of shearing post, the lower end of described reaming frustum connects the guiding frustum, and the diameter of described guiding frustum dwindles from top to bottom gradually, and the upper end diameter of guiding frustum is identical and identical with the prebored hole diameter of blank with the lower end diameter of reaming frustum.
Hot extrusion reaming head of the present invention, the cone angle of wherein said guiding frustum is 6～10 °, the height of guiding frustum is 3～5 times of guiding frustum upper end diameter.
Hot extrusion reaming head of the present invention, wherein said reaming frustum is structure as a whole with the guiding frustum.
A hot extrusion reaming difference from prior art of the present invention is that hot extrusion reaming head of the present invention changes lead into frustum, the big footpath, upper end of design frustum is identical with blank prebored hole diameter, and the lower end diameter of guiding frustum is less than blank prebored hole diameter, like this when placing reaming, guiding frustum small end is easy to enter in the prebored hole, enter big end and the prebored hole tight fit of last guiding frustum, the reaming head has just aligned the center of prebored hole accurately, make the ensuing reaming can be eccentric, reaming blank wall thickness be even.
Below in conjunction with accompanying drawing hot extrusion reaming head of the present invention is described further.
Description of drawings
Fig. 1 is the structural representation of hot extrusion reaming head of the present invention.
The specific embodiment
As shown in Figure 1, present embodiment hot extrusion reaming head comprises shears post 1, the lower end of shearing post connects reaming frustum 2, reaming frustum 2 diameter from top to bottom dwindles gradually, the upper end diameter of reaming frustum is identical with the diameter of shearing post 1, the lower end of reaming frustum 2 connects guiding frustum 3, and present embodiment reaming frustum 2 is structure as a whole with guiding frustum 3.The diameter of guiding frustum 3 dwindles from top to bottom gradually, the upper end diameter of guiding frustum is identical and identical with the prebored hole diameter of blank with the lower end diameter of reaming frustum, the cone angle of guiding frustum 3 is 6～10 °, and the height of guiding frustum 3 is 3～5 times of guiding frustum upper end diameter.
Present embodiment hot extrusion reaming head is in free state in put procedure, the lower end of guiding frustum is introduced into the blank prebored hole, the big end of frustum of leading at last enter in the prebored hole and with the prebored hole tight fit, make and expand the center that head accurately aligns prebored hole, and then promote the reaming head by reaming equipment and move downward and finish the reaming operation.
Above-described embodiment is described preferred embodiment of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that those of ordinary skills make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (3)
1. hot extrusion reaming head, comprise and shear post (1), the lower end of described shearing post connects reaming frustum (2), described reaming frustum (2) diameter from top to bottom dwindles gradually, the upper end diameter of reaming frustum is identical with the diameter of shearing post (1), it is characterized in that: the lower end of described reaming frustum (2) connects guiding frustum (3), the diameter of described guiding frustum (3) dwindles from top to bottom gradually, and the upper end diameter of guiding frustum (3) is identical and identical with the prebored hole diameter of blank with the lower end diameter of reaming frustum (2).
2. hot extrusion reaming head according to claim 1, it is characterized in that: the cone angle of described guiding frustum (3) is 6～10 °, the height of guiding frustum (3) is 3～5 times of guiding frustum upper end diameter.
3. hot extrusion reaming head according to claim 1 and 2 is characterized in that: described reaming frustum (2) is structure as a whole with guiding frustum (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101986333A CN103264062A (en) | 2013-05-24 | 2013-05-24 | Hot-extrusion reaming head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101986333A CN103264062A (en) | 2013-05-24 | 2013-05-24 | Hot-extrusion reaming head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103264062A true CN103264062A (en) | 2013-08-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101986333A Pending CN103264062A (en) | 2013-05-24 | 2013-05-24 | Hot-extrusion reaming head |
Country Status (1)
| Country | Link |
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| CN (1) | CN103264062A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756474A (en) * | 2020-12-18 | 2021-05-07 | 南京工程学院 | Preparation method of GH4700 nickel-based superalloy seamless tube blank |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006088221A (en) * | 2004-08-27 | 2006-04-06 | Jfe Steel Kk | Manufacturing method of tube having high dimensional accuracy |
| CN101402163A (en) * | 2007-10-07 | 2009-04-08 | 襄樊市汇聚龙机械制造有限公司 | Bearing ferrule workblank triple external member smithing and molding process |
| CN101956534A (en) * | 2009-07-20 | 2011-01-26 | 陈伟琛 | Production technology of single-joint or integrated drill pipe |
| CN202238890U (en) * | 2011-09-30 | 2012-05-30 | 新兴铸管股份有限公司 | Piercing plug of composite tube |
| CN102632093A (en) * | 2012-04-01 | 2012-08-15 | 徐州徐工液压件有限公司 | Steel pipe cold-drawing mould with twice-reducing and twice-shaping functions |
| CN203245205U (en) * | 2013-05-24 | 2013-10-23 | 新兴铸管股份有限公司 | Hot extrusion reaming head |
-
2013
- 2013-05-24 CN CN2013101986333A patent/CN103264062A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006088221A (en) * | 2004-08-27 | 2006-04-06 | Jfe Steel Kk | Manufacturing method of tube having high dimensional accuracy |
| CN101402163A (en) * | 2007-10-07 | 2009-04-08 | 襄樊市汇聚龙机械制造有限公司 | Bearing ferrule workblank triple external member smithing and molding process |
| CN101956534A (en) * | 2009-07-20 | 2011-01-26 | 陈伟琛 | Production technology of single-joint or integrated drill pipe |
| CN202238890U (en) * | 2011-09-30 | 2012-05-30 | 新兴铸管股份有限公司 | Piercing plug of composite tube |
| CN102632093A (en) * | 2012-04-01 | 2012-08-15 | 徐州徐工液压件有限公司 | Steel pipe cold-drawing mould with twice-reducing and twice-shaping functions |
| CN203245205U (en) * | 2013-05-24 | 2013-10-23 | 新兴铸管股份有限公司 | Hot extrusion reaming head |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756474A (en) * | 2020-12-18 | 2021-05-07 | 南京工程学院 | Preparation method of GH4700 nickel-based superalloy seamless tube blank |
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| PB01 | Publication | ||
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| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130828 |