KR20110038774A - Split die for forming bolt head or nut - Google Patents

Split die for forming bolt head or nut Download PDF

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Publication number
KR20110038774A
KR20110038774A KR1020090095933A KR20090095933A KR20110038774A KR 20110038774 A KR20110038774 A KR 20110038774A KR 1020090095933 A KR1020090095933 A KR 1020090095933A KR 20090095933 A KR20090095933 A KR 20090095933A KR 20110038774 A KR20110038774 A KR 20110038774A
Authority
KR
South Korea
Prior art keywords
tip
nut
holder
bolt head
groove
Prior art date
Application number
KR1020090095933A
Other languages
Korean (ko)
Inventor
정연수
Original Assignee
정연수
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 정연수 filed Critical 정연수
Priority to KR1020090095933A priority Critical patent/KR20110038774A/en
Publication of KR20110038774A publication Critical patent/KR20110038774A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00Details of machines for forging, pressing, or hammering
    • B21J13/02Dies or mountings therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/12Forming profiles on internal or external surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21KMAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00Making machine elements
    • B21K1/44Making machine elements bolts, studs, or the like
    • B21K1/46Making machine elements bolts, studs, or the like with heads

Abstract

PURPOSE: A split die for molding a bolt head or a nut is provided to maximize the compactibility and robustness of a product since a processing tip does not have a gap or crack under strong pressure. CONSTITUTION: A split die for molding a bolt head or a nut comprises a processing tip(10), a first holder(20), a pusher(30), a sub tip(40), and a second holder(50). The processing tip directly strikes a raw material through a forging process and supplies pressure. The first holder holds the processing tip. The pusher is installed on the lower part of the first holder and supports the first holder. The sub tip is installed in the charging part of the pusher and supports the processing tip. The second holder holds the first holder and the pusher.

Description

Split die for forming bolt head or nut}
The present invention relates to a split die for forming a bolt head or nut, and more particularly, an inner surface of each of the split tips formed by dividing at an equal angle to form a planar shape and the inner diameter of the inner holder to which the split tips are coupled is defined. The present invention relates to a partitioning die for forming a bolt head or nut to prevent cracks and cracks by being formed in a plane while forming the same angle as the outer surface.
In general, bolts and nuts are coupling means essential for various structures, machinery, and the like.
These bolts and nuts are formed in polygons so that they can be easily tightened or dismantled using tightening tools, and most take the form of hexagons.
The bolt head or nut is manufactured by the forging process, that is, the raw material for the bolt head or nut is formed into a desired shape by priced with a hexagon or a die having a groove having a different shape than that desired. The shape of the nut or bolt head varies depending on the groove formed in the die.
Conventional dies used in the processing of bolt heads and nuts have been filed in the Utility Model Registration Application No. 2000-14810, "Dividing die for bolt head or nut shaping", filed by the applicant.
Briefly, the prior application as described above, the upper tip for directly hitting the raw material to be molded through the forging process to provide a pressing force, the lower tip is installed on the lower side of the upper tip to support the upper tip, and And a cylindrical inner holder including the upper and lower tips stacked therein, a pusher provided at the lower portion of the inner holder to support the inner holder, and a holder including the inner holder and the pusher therein. do.
In addition, the upper tip is divided into equiangular consisting of six split tips having the same size.
However, the conventional die as described above forms a hexagonal shape or a square shape such that the inner diameter of the nut and the bolt head in a state where the splitting tip of the upper tip is in close contact with each other, but the outer surface of the splitting tip is rounded. When the splitting tip of the upper tip forms a circular shape in close contact with the die, when the raw material is punched with a die, there is a problem that a crack or opening phenomenon occurs in the upper tip due to pressure, and thus, the strength of the product is deteriorated. .
In addition, there is a problem in that the workability and productability, such as the product quality of the die is deteriorated, so that a defect occurs in the molded article to be molded.
Accordingly, the present invention has been made to solve the above problems to form the inner and outer surfaces of the processing tip to achieve the shape of the nut or bolt head in a planar shape while forming the same shape as the square of the nut or bolt head. When molding the product, cracks and cracks do not occur in the die, which improves the robustness of the product.In addition, the bolt head or nut is divided to improve the productability because no defect occurs in the molded product due to the solidity of the die. The purpose is to provide a dice.
The present invention for achieving the above object has a groove to form a hexagon or square to form a nut or bolt head in the center and the outer surface is divided into equal angles made of a straight line to form an angle An inner holder having a processing tip formed by a split tip, the processing tip including the processing tip therein, and an inner surface having an angular groove that forms an angle with the outer surface of the splitting tip; To provide a split head for forming a bolt head or nut, characterized in that it comprises a pusher for supporting and a holder for receiving the inner holder and the pusher therein.
As such, the present invention forms the same groove as the shape of the nut or bolt head on the inner surface of the die for forming the nut or bolt head, and forms the same shape as the groove while making the outer surface perpendicular to each other. The inner surface of the inner holder to be accommodated has the same square shape as the outer surface of the processing tip, so that when the raw material is punched with a die, the processing tip does not open or crack under strong pressure, thus maximizing the formability and firmness of the product. Of course, there is an effect that can maximize the work efficiency.
Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
1 is an exploded perspective view showing a split head for forming a bolt head or nut according to the present invention, FIG. 2 is a perspective view showing a split die according to the present invention, and FIG. 3 is a machining tip of the split die according to the present invention. 4 is a plan view showing a cut-away view showing a divided dice according to the present invention.
The present invention is a split die (1) for molding a bolt head or nut, the split die (1) for forming a bolt head or nut is a machining tip (10) for directly hitting the raw material to be molded through a forging process and providing a pressing force (10). ), An inner holder 20 to receive the processing tip 10 therein, a pusher 30 provided below the inner holder 20 to support the inner holder 20, and the pusher ( 30 is configured to include an auxiliary tip 40 installed inside to support the processing tip 10, and a holder 50 to accommodate the inner holder 20 and the pusher 30 therein.
The processing tip 10 is divided into equiangular and consists of a plurality of splitting tips 11 having the same size.
The splitting tip 11 has a hexagonal groove 12 formed therein so as to form a hexagonal nut or bolt head in close contact with a neighboring splitting tip 11.
In addition, the splitting tip 11 is formed while the outer surface is formed at the same angle as the groove 12 in close contact with each other is formed at a right angle of the planar state, each splitting tip 11 is in close contact with each other The corner portion is to be rounded (14).
At this time, the length of the right angle is formed on the outer surface of the splitting tip 11 is so as to maximize the uniformity of the pressing force when forming the nut or bolt head as shown in FIG. It is preferable that the length is formed by the same length as a).
The outer circumferential surface of the processing tip 10 is preferably tapered (13).
On the other hand, the groove 12 and the outer surface of the processing tip 10 is formed of a hexagonal groove 12 when the nut or bolt head is hexagon, but more preferably the nut or bolt head is square, triangular, octagonal, etc. When forming a different angle of the processing tip 10 is the groove 12 and the outer surface is to form the same square shape as the nut or bolt head.
In this case, when the nut or bolt head is hexagonal, six splitting tips 11 are required, and when the nut or bolt head is triangular, as shown in FIG. 5, only three splitting tips 11 are provided. It is necessary.
In addition, when the nut or bolt head is square, it is preferable that only four four split tips 11 are needed as shown in FIG. 6.
The inner holder 20 has an inner groove 21 is formed on the inner surface to form the same shape as the outer surface of the processing tip 10, each corner portion of the groove 21 is the rounding of the split tip 11 (14) The rounding 23 is performed in the same manner as the processing.
In addition, the groove 21 of the inner holder 20 is preferably formed to be tapered 22 the same as the outer peripheral surface of the processing tip (10).
The auxiliary tip 40 is press-installed in the upper inner surface of the pusher 30, the first passage 41 is formed in the center of the air passage.
In addition, a plurality of first exhaust grooves 42 are formed in the longitudinal direction on the outer circumferential surface of the auxiliary tip 40.
The pusher 30 is charged inside the holder 50, and a charging part is formed to allow the auxiliary tip to be charged on an upper inner surface thereof, and air flowing downward through the first flow path 41 in a central part thereof. The second flow passage 31 is formed to communicate with the first flow passage 41 so that the outside of the gas can flow out.
In addition, a plurality of second exhaust grooves 33 are formed in the longitudinal direction on the outer circumferential surface of the pusher 30.
Looking at the operating state according to the present invention made of the above configuration as follows.
The processing tip 10 is inserted into each groove 21 of the inner holder 20, but the hexagonal, triangular, and square grooves 12 are divided in the state in which the splitting tips 11 of the processing tips 10 are assembled. It is combined to form.
In addition, the outer circumferential surface of the processing tip 10 and the groove 21 of the inner holder 20 are tapered (13, 22) to be formed so that the processing tip 10 coupled to the groove 21 to the bottom Separation is possible, but can not escape to the top.
In addition, since the inner circumferential surface of the holder 50 is inclined downward, the inner holder 20 does not escape upward with respect to the holder 50.
In addition, since the outer circumferential surfaces of the angular groove 21 and the splitting tip 11 are formed at right angles in a plane state, even when the raw material is punched to process the nut or the bolt head using the split dice 1 according to the present invention. The processing tip 10 is firmly bound in the inner holder 20 so that cracks or cracks do not occur.
In addition, since the corners of each of the outer circumferential surface of the processing tip 10 are formed by the rounding 14, the lengths of the right angles of the respective grooves 12 and the outer circumferential surface are formed to be the same, thereby forming a nut or bolt head. The force of the pressing force received by the processing tip 10 is applied uniformly, thereby maximizing the robustness of the split dice 1 according to the present invention.
Thus, when the raw material is punched into the split dice 1 according to the present invention, no cracks or gaps are generated in the processing tip 10, and thus the molding of the nut or the bolt head is processed precisely, so that the nut or the bolt head is precisely manufactured without defects. This is done.
Meanwhile, the compressed air generated in the groove 12 formed by the processing tip 10 is discharged downward through the first flow passage 41 and the second flow passage 31.
Thus, the split head for forming the bolt head or nut 1 according to the present invention is made of a combination of the processing tip 10 and the inner holder 20 and the protective tip 40, the pusher 30 and the holder 50 The splitting tip 11 of the processing tip 10 is, of course, possible to be separated as a whole, thereby facilitating partial exchange and maintenance.
In particular, since the processing tip 10 is divided into a plurality of but the outer surface is formed at a right angle of the planar state so that no cracking or cracking occurs, the life of the dividing die 1 itself is extended to the maximum.
In addition, when the splitting tip 11 is worn, only the splitting tip can be easily replaced, and thus the molding of the nut or the bolt head is always precisely manufactured while increasing the economic efficiency.
The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.
1 is an exploded perspective view showing a split die for forming a bolt head or nut according to the present invention.
Figure 2 is a perspective view showing a combined dice in accordance with the present invention.
Figure 3 is a plan view showing a machining tip of the split dice according to the present invention.
Figure 4 is a cross-sectional view showing a split dice according to the present invention.
5 is a perspective view showing another example of a split dice according to the present invention.
6 is a perspective view showing another example of a split dice according to the present invention.
<Description of the symbols for the main parts of the drawings>
1: split dice 10: processing tip
11: split tip 12: groove
13,22 taper 14,23 rounding
20: inner holder 21: square groove
30: pusher 31: the second euro
32: charging part 33: second exhaust groove
40: protection tip 41: the first flow path
42: first exhaust groove 50: holder

Claims (7)

  1. A processing tip 10 for directly hitting the raw material to be molded through a forging process and providing a pressing force;
    An inner holder 20 accommodating the processing tip 10 therein;
    A pusher 30 provided below the inner holder 20 to support the inner holder 20 and having a charging unit 32 formed on an upper inner surface thereof;
    An auxiliary tip 40 installed inside the charging unit 32 of the pusher 30 to support the processing tip 10;
    A holder 50 accommodating the inner holder 20 and the pusher 30 therein;
    Split dice for forming a bolt head or nut, characterized in that comprises a.
  2. The method of claim 1,
    The processing tip 10 is divided into equiangular and consists of a plurality of splitting tips 11 having the same size, but the splitting tips 11 have a hexagonal shape in close contact with neighboring splitting tips 11. Polygonal grooves 12 are formed therein so as to form a nut or bolt head to be formed, and the outer surfaces are formed at right angles in a planar state while forming the same angle as the grooves 12 in close contact with each other. The edge portion of the close contact portion of each split tip 11 is rounded 14 so that the pressing force is equally applied.
  3. The method of claim 2,
    The length of the right angle formed on the outer surface of the splitting tip 11 is equal to the length of the groove 12 so as to maximize the uniformity of the pressing force. .
  4. The method of claim 1,
    The outer circumferential surface of the processing tip 10 is tapered (13), characterized in that the partition die for forming a bolt head or nut.
  5. The method of claim 1,
    The groove 12 and the outer circumferential surface of the processing tip 10 is formed in the same square shape as the nut or bolt head according to the shape of the hexagon or triangle and square of the nut or bolt head for bolt head or nut molding Split dice.
  6. The method of claim 1,
    The inner holder 20 is formed on the inner surface of the inner groove 21 to form the same shape as the outer surface of the processing tip 10, each corner portion of the groove 21 is characterized in that the rounding (23) Split dice for bolt head or nut shaping
  7. The method of claim 6,
    Each groove 21 of the inner holder 20 is tapered to form a taper (22) the same as the outer circumferential surface of the processing tip (10) divided dice for forming a head or nut.
KR1020090095933A 2009-10-09 2009-10-09 Split die for forming bolt head or nut KR20110038774A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020090095933A KR20110038774A (en) 2009-10-09 2009-10-09 Split die for forming bolt head or nut

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020090095933A KR20110038774A (en) 2009-10-09 2009-10-09 Split die for forming bolt head or nut

Publications (1)

Publication Number Publication Date
KR20110038774A true KR20110038774A (en) 2011-04-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020090095933A KR20110038774A (en) 2009-10-09 2009-10-09 Split die for forming bolt head or nut

Country Status (1)

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KR (1) KR20110038774A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016209908A (en) * 2015-05-11 2016-12-15 日立金属株式会社 Mold for hot forging

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016209908A (en) * 2015-05-11 2016-12-15 日立金属株式会社 Mold for hot forging

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