CN207430931U - A kind of preforming processing tool of cylindrical bolt - Google Patents
A kind of preforming processing tool of cylindrical bolt Download PDFInfo
- Publication number
- CN207430931U CN207430931U CN201721593381.4U CN201721593381U CN207430931U CN 207430931 U CN207430931 U CN 207430931U CN 201721593381 U CN201721593381 U CN 201721593381U CN 207430931 U CN207430931 U CN 207430931U
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- centre bore
- middle mould
- diameter
- bolt
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Abstract
The utility model is related to a kind of preforming processing tools of cylindrical bolt, and including frock body, the frock body includes formwork, middle mould and matrix；The matrix and middle mould be successively set on from top to bottom in the formwork inner cavity of the same central axis of formwork, the formwork inner cavity includes matrix centre bore and middle die hole, the outer profile of the matrix centre bore and matrix is adapted, and the internal diameter of middle die hole is adapted with the diameter of the middle mould；The middle mould is equipped with middle mould centre bore, and the diameter of middle mould centre bore is adapted with the outer diameter of the screw rod of bolt embryo material, and middle mould upper end is equipped with the middle mould bellmouth connected with middle mould centre bore；The center of matrix is equipped with matrix centre bore, and the matrix centre bore is bellmouth, and the lower end diameter of the matrix centre bore is not more than the maximum gauge on bolt embryo material head, and the depth of the matrix centre bore is less than the height on the bolt embryo material head；The lower face of preforming bolt is avoided to generate burr, and can prevent mold from bursting.
Description
Technical field
The utility model is related to a kind of preforming processing tool of bolt, more particularly to a kind of cylindrical bolt is preforming
Processing tool.
Background technology
Cylindrical bolt includes head and screw rod, and the head and screw rod are cylinder, generally utilizes backward extrusion principle
Formed, the existing preforming frock body of cylindrical bolt as shown in fig. 7, the mold primary structure used by matrix 3 and middle mould 2
Press-fitting composition, matrix 3 are equipped with matrix central through hole 3-2, and middle mould 2 is equipped with middle mould centre bore 2-1, preforming bolt head
Lower face is formed on the contact surface of matrix 3 and middle mould 2, under the action of being subject to power when the head of preforming bolt embryo material, meeting
Matrix bottom (lower end of i.e. preforming bolt head) first is filled, product manufacturing is completed in rear exclusion upwards, however stress reaches one
When determining degree, so as to squeeze the cooperation between mold, product system can be caused there are embryo material along the gap entrance between matrix and main mould
There is burr during making or even matrix is burst.
Utility model content
The utility model in view of the deficiency of the prior art, provides a kind of cylindrical bolt preforming processing work
Dress.
The technical solution that the utility model solves above-mentioned technical problem is as follows：A kind of preforming processing work of cylindrical bolt
Dress, including frock body, the frock body includes consistent formwork, middle mould and the matrix of central axis, the formwork and described
The outer profile of middle mould is cylinder, and the outer profile of the matrix is truncated cone, and upper end diameter is less than its lower end diameter；
The matrix and middle mould be successively set on from top to bottom in the formwork inner cavity of the same central axis of formwork, the mould
Shell inner cavity includes the matrix centre bore of connection from top to bottom and middle die hole, the matrix centre bore are mutually fitted with the outer profile of matrix
Match somebody with somebody, the internal diameter of the middle die hole is adapted with the diameter of the middle mould；
The center of the middle mould is equipped with middle mould centre bore, the diameter of the middle mould centre bore and the screw rod of bolt embryo material
Outer diameter be adapted, the middle mould upper end is equipped with the middle mould bellmouth that is connected with the middle mould centre bore, the middle mould bellmouth
Upper end diameter be more than its lower end diameter；Wherein middle mould centre bore is circular through hole；
The center of the matrix be equipped with matrix centre bore, the matrix centre bore be bellmouth, the matrix center
The upper end diameter in hole is more than its lower end diameter, and the lower end diameter of matrix centre bore is straight equal to the upper end of the middle mould bellmouth
Footpath, the lower end diameter of the matrix centre bore are not more than the maximum gauge on bolt embryo material head, and the depth of the matrix centre bore
Degree is less than the height on the bolt embryo material head.
Further, extrusion tooling is further included, the extrusion tooling is arranged on the top of the frock body, the extruding work
It holds end and is equipped with annular convex platform, the lower face of the annular convex platform is adapted with the upper surface of preforming bolt head.
Further, further include and make bar, for the bar of beating for cylinder, the diameter for making bar is straight with the middle mould centre bore
Footpath is adapted.
Further, the conical surface of the middle mould bellmouth and the angle of horizontal plane are 45 °.
Further, the conical surface of the matrix centre bore and the angle of perpendicular are between 5 °~8 °.
The beneficial effects of the utility model are：The lower end of preforming bolt head is not or not the face that matrix is in contact with middle mould
On, but on the bottom surface of the middle mould bellmouth of middle mould upper end, it can prevent the lower face of preforming bolt head from burr occur,
And matrix centre bore is bellmouth, and the upper end aperture is larger, lower end aperture is smaller, and easily controllable material metal flow direction avoids
The downward stress of embryo material is excessively concentrated in preforming bolt head forming process, and solve matrix is influenced to cause to fry by stress concentration
It splits, improves production efficiency, quality and die life.
Description of the drawings
Fig. 1 is the structure diagram of frock body in the utility model；
Fig. 2 is the machining state schematic diagram of bolt embryo material in the utility model；
Fig. 3 is the structure diagram of bolt embryo material in the utility model；
Fig. 4 is the structure diagram after the preforming processing of the utility model；
Fig. 5 is the structure diagram of formwork in the utility model；
Fig. 6 is the structure diagram of middle mould in the utility model；
Fig. 7 is the structure diagram of traditional preforming frock body of cylindrical bolt；
In the accompanying drawings, the list of designations represented by each label is as follows：1st, formwork, 1-1, middle die hole, in 1-2, matrix
Heart hole, 2, middle mould, 2-1, middle mould centre bore, 2-2, middle mould bellmouth, 2-2,3, matrix, 3-1, matrix centre bore, 3-2, matrix
Central through hole, 4, extrusion tooling, 4-1, annular convex platform, 5, preforming bolt embryo material, 5-1, embryo material head, 5-2, embryo material screw rod,
6th, preforming bolt.
Specific embodiment
The principle and feature of the utility model are described below in conjunction with attached drawing, example is served only for explaining this practicality
It is new, it is not intended to limit the scope of the utility model.
As shown in figs 1 to 6, the preforming processing tool of a kind of cylindrical bolt, including frock body, the frock sheet
Body includes consistent formwork 1, middle mould 2 and the matrix 3 of central axis, and the outer profile of the formwork 1 and the middle mould 2 is cylinder
Shape, the outer profile of the matrix 3 is truncated cone, and upper end diameter is less than its lower end diameter；
The matrix 3 and middle mould 2 be successively set on from top to bottom in the formwork inner cavity of 1 same central axis of formwork, institute
State formwork inner cavity includes the matrix centre bore 1-2 connected and middle die hole 1-1, the matrix centre bore 1-2 and matrix from top to bottom
Outer profile be adapted, the internal diameter of the middle die hole 1-1 is adapted with the diameter of the middle mould 2；
The center of the middle mould 2 is equipped with middle mould centre bore 2-1, diameter and the bolt embryo of the middle mould centre bore 2-1
The outer diameter of the screw rod 5-2 of material is adapted, and middle 2 upper end of mould is equipped with the middle mould bellmouth connected with the middle mould centre bore 2-1
The upper end diameter of 2-2, the middle mould bellmouth 2-2 are more than its lower end diameter；Wherein middle mould centre bore 2-1 is circular through hole；
The center of the matrix 3 is equipped with matrix centre bore 3-1, and the matrix centre bore 3-1 is bellmouth, the mould
The upper end diameter of piece centre bore 3-1 is more than its lower end diameter, and the lower end diameter of matrix centre bore 3-1 is equal to the middle mould taper
The upper end diameter of hole 2-2, the lower end diameter of the matrix centre bore 3-1 are not more than the maximum gauge of bolt embryo material head 5-1, and
The depth of the matrix centre bore 3-1 is less than the height of the bolt embryo material head 5-1.
Extrusion tooling 4 is further included, the extrusion tooling 4 is arranged on the top of the frock body, the extrusion tooling
Lower end is equipped with annular convex platform 4-1, and the lower face of the annular convex platform 4-1 is adapted with the upper surface of preforming bolt head.
It further includes and makes bar (being not drawn into figure), the bar of beating is cylinder, the diameter for making bar and the middle mould center
The diameter of hole 2-1 is adapted.
The conical surface of the middle mould bellmouth 2-2 and the angle of horizontal plane are 45 °.
The conical surface of the matrix centre bore 3-1 and the angle of perpendicular are between 5 °~8 °.
The operation principle of the utility model is as follows：
As shown in Fig. 2, preforming bolt embryo material 5 is put into the die cavity of frock body, i.e., mould is sequentially inserted into from top to bottom
In piece centre bore 3-1, middle mould bellmouth 2-2 and middle mould centre bore 2-1, the lower face of the preforming bolt embryo material head 5-1
The lower face of the middle mould bellmouth 2-2 is contacted, the upper surface of the preforming bolt embryo material head 5-1 is higher than the matrix 3
Upper surface；
Start extrusion tooling 4, annular convex platform 4-1 squeezes the head 5-1 of bolt embryo material, ultimately forms preforming bolt 6, such as
Shown in Fig. 4.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within new spirit and principle, any modifications, equivalent replacements and improvements are made should be included in the guarantor of the utility model
Within the scope of shield.
Claims (5)
1. the preforming processing tool of a kind of cylindrical bolt, which is characterized in that including frock body, the frock body includes
The outer profile of the consistent formwork of central axis, middle mould and matrix, the formwork and the middle mould is cylinder, the matrix
Outer profile is truncated cone, and upper end diameter is less than its lower end diameter；
The matrix and middle mould be successively set on from top to bottom in the formwork inner cavity of the same central axis of formwork, in the formwork
The outer profile of matrix centre bore and middle die hole of the chamber from top to bottom including connection, the matrix centre bore and matrix is adapted, institute
The internal diameter for stating middle die hole is adapted with the diameter of the middle mould；
The center of the middle mould is equipped with middle mould centre bore, and the diameter of the middle mould centre bore is outer with the screw rod of bolt embryo material
Footpath is adapted, and the middle mould upper end is equipped with the middle mould bellmouth that is connected with the middle mould centre bore, the middle mould bellmouth it is upper
Diameter is held to be more than its lower end diameter；
The center of the matrix is equipped with matrix centre bore, and the matrix centre bore is bellmouth, the matrix centre bore
Upper end diameter is more than its lower end diameter, and the lower end diameter of matrix centre bore is equal to the upper end diameter of the middle mould bellmouth, institute
The lower end diameter for stating matrix centre bore is not more than the maximum gauge on bolt embryo material head, and the depth of the matrix centre bore is less than
The height on the bolt embryo material head.
2. the preforming processing tool of cylindrical bolt according to claim 1, which is characterized in that further include extruding work
Dress, the extrusion tooling are arranged on the top of the frock body, and the lower end of the extrusion tooling is equipped with annular convex platform, the ring
The lower face of shape boss is adapted with the upper surface of preforming bolt head.
3. the preforming processing tool of cylindrical bolt according to claim 1 or 2, which is characterized in that it further includes and makes bar,
The diameter for making bar is adapted with the diameter of the middle mould centre bore.
4. the preforming processing tool of cylindrical bolt according to claim 3, which is characterized in that the middle mould bellmouth
The conical surface and the angle of horizontal plane be 45 °.
5. the preforming processing tool of cylindrical bolt according to claim 4, which is characterized in that the matrix centre bore
The conical surface and perpendicular angle between 5 °~8 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721593381.4U CN207430931U (en) | 2017-11-24 | 2017-11-24 | A kind of preforming processing tool of cylindrical bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721593381.4U CN207430931U (en) | 2017-11-24 | 2017-11-24 | A kind of preforming processing tool of cylindrical bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207430931U true CN207430931U (en) | 2018-06-01 |
Family
ID=62287712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721593381.4U Active CN207430931U (en) | 2017-11-24 | 2017-11-24 | A kind of preforming processing tool of cylindrical bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207430931U (en) |
-
2017
- 2017-11-24 CN CN201721593381.4U patent/CN207430931U/en active Active
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