KR101558315B1 - Manufacturing method of one piece aming bolt of head lamp for vehicles - Google Patents

Manufacturing method of one piece aming bolt of head lamp for vehicles Download PDF

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Publication number
KR101558315B1
KR101558315B1 KR1020150080676A KR20150080676A KR101558315B1 KR 101558315 B1 KR101558315 B1 KR 101558315B1 KR 1020150080676 A KR1020150080676 A KR 1020150080676A KR 20150080676 A KR20150080676 A KR 20150080676A KR 101558315 B1 KR101558315 B1 KR 101558315B1
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South Korea
Prior art keywords
preliminary
diameter
bending
round bar
head
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KR1020150080676A
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Korean (ko)
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최병길
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최병길
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
    • B60Q1/068—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/44—Making machine elements bolts, studs, or the like

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

The present invention relates to an automobile head lamp comprising a main body portion 10 extending in the longitudinal direction, a spiral portion 12 formed on one side thereof, a head portion 14 formed on the other side thereof, A washer engaging portion 13 having a diameter larger than the diameter of the body portion 10 is formed at an upper end of the head portion 14 and a rotation controlling portion 16 having gears 17 formed along the rim of the head portion 14 And is formed integrally with the body portion 10 and the head portion 14 by multi-step molding, thereby replacing a conventional welding method. In addition, the bending portion is formed from a single machine to a bending process. So that cracks (cracks) can be prevented from occurring by not exceeding the critical damage degree.

Description

TECHNICAL FIELD [0001] The present invention relates to a method of manufacturing an all-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle accessory, and more particularly, to an aiming bolt used for adjusting the angle of light reflection of an automobile headlamp, and a method of manufacturing the same.

The headlamps are installed on both sides of the vehicle in order to ensure visibility while driving at night. In other words, the headlamp is a device that allows the driver to drive safely by illuminating the front.

Such a headlamp is installed to adjust the irradiation angle so as not to give a glare to the driver of the opposite vehicle or the front vehicle to secure the night vision, and the irradiation angle of the headlamp is adjusted through the aiming bolt .

As an example of the prior art literature on the amming bolts of headlamps, domestic registered patent No. 10-1375130 entitled " Aiming Bolts of Automotive Headlamps " (Prior Art 1) and domestic registered patent applications filed by the applicant of the present invention, 1502300, " Method of manufacturing an integral type of automobile headlamp bolt " (Prior Art 2).

As shown in FIG. 1, the " aiming bolt " described in the prior art document 1 includes a bolt member 110 formed of a body 111 having a screw 111ba formed thereon and a head 112 formed at an upper end of the body 111 And the operation force receiving member 120 is integrally welded to the bolt member 110. [

In order to solve such a problem, the prior art 2 proposes a method of manufacturing the welding bolt in one body instead of the welding process in order to solve such a problem.

Namely, the aiming bolts shown in the prior art document 2 are integrally manufactured through a multi-step manufacturing process (multi-step forming) with a round bar (raw material) cut to a required length.

However, as described in the prior art document 2, the process of bending the preliminary rotation regulator 16-1 having the gear 17 at the edge corresponding to the finishing step is performed through a separate bending special machine.

The process using a separate bending machine is not only troublesome but also causes an error in setting the product on the bending machine and there is a problem that the bending part often cracks due to exceeding the critical damage degree.

In addition, automobile manufacturers are ordering the Aiming Bolts of the required geometry for the model being developed, thus requiring the molding of the Aiming Bolts.

Korean Patent No. 10-1375130 entitled " Aiming Bolt of Automobile Head Lamp " Korean Patent No. 10-1502300 entitled " Method for manufacturing an integrated type of automobile head lamp "

Therefore, in the present invention, instead of the welding method in the welding bolts of automobile head lamps, one metal wire is integrally formed in various stages of forging, but it is made in the same machine without using a separate bending machine, Thereby preventing cracks (cracks) from being generated and preventing cracks from exceeding the critical damage degree, thereby improving the productivity of the automobile headlamp.

In addition, the aiming bolt of the changed shape is formed by the multistage forming forming process smoothly.

According to an aspect of the present invention, there is provided an aiming bolt for an automobile head lamp, wherein a spiral portion is formed on one side of a body portion extending in a longitudinal direction, and a head portion is formed on the other side A washer engaging portion 13 is formed at an upper end of the body portion 10 so as to be larger than the diameter of the body portion 10 and a rotation adjusting portion 13 having gears 17 formed along the rim (16) is integrally formed with the washer holding portion (13) and the head portion (14) by multi-stage molding.

Further, the present invention provides a method of manufacturing an automobile head lamp,

A first step of cutting a wire of metal having a long elongated shape and a circular cross section to a required length,

A second step of shaping the chamfered portion 32 so that one end of the round bar 30 cut by the above process is chamfered by any one of extrusion or forging to facilitate entry into the mold,

The round bar 30 is provided at one end with a body portion 10 smaller in diameter than the diameter of the round bar 30 for forging and a preforming of the washer engaging portion 13 larger than the diameter of the body portion 10, A third step of integrally forming a preliminary helix 12-1 having a diameter smaller than the diameter of the body,

The front head 14-1 and the preliminary rotation regulator 16-1 are formed by forging the remaining round bar 30 on the first and second main body portions 10, A fourth step of allowing the lower end of the round bar 30 to maintain the diameter of the round bar 30 so that a washer engaging part 13 having a larger diameter than the body 10 is formed on the upper end of the body part 10,

A fifth step of forming the preliminary head part (14-1) and the preliminary rotation control part (16-1) into a circular plate with a hexagonal head part (14) by forging;

The preliminary rotation regulator 16-1 on the circular plate is subjected to trimming to form a gear 17 at the rim,

A seventh process of bending the preliminary rotation regulator (16-1) having the gear (17) formed on the rim,

And the eighth step of forming the spiral part 12 in the preliminary spiral part 12-1.

The present invention replaces the existing welding method in which the welding bolts of an automobile head lamp are integrally formed by a multistage forming process using a wire material of a metal material.

In addition, the bending process is performed from the same machine to the step forming process, and cracks are prevented from exceeding the critical damage degree of the bending portion during the bending process.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing the construction of a conventional automotive head lamp,
FIG. 2 is a perspective view of an integral type of the aiming bolt of a vehicle headlamp according to an embodiment of the present invention,
FIG. 3 is a view illustrating a manufacturing process of the integrated aiming bolt according to the embodiment of the present invention,
FIG. 4 is a three-dimensionally diagrammatic view from the step (f) to the step (h) of the step by step through the foaming molding machine,
FIG. 5 is an enlarged view of a bending portion (rounded portion) of a rotation control member of an integrated type aiming bolt of an automobile headlamp according to an embodiment of the present invention. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, a detailed description of a known construction of an automobile head lamp will be omitted, and a characteristic construction of the automobile bolt related to the present invention will be described.

Referring to FIG. 2 (a), an integrated type of the automobile head lamp 2 (hereinafter simply referred to as an "earming bolt") according to an embodiment of the present invention includes a body portion 10 extending in the longitudinal direction, And a rotation control member 16 having gears 17 formed along the rim of the head unit 14 is integrally formed on the inside of the head unit 14 .

Particularly, in the aiming bolt 2 of the present invention, the washer engaging portion 13 is formed at the upper end of the body portion 10, which is larger than the diameter of the body portion 10.

Referring to FIG. 2 (b), the washer engaging portion 13 engages the washer 40 fitted to the body portion 10. The washer 40 engaged with the washer engaging portion 13 is provided with a rotation regulating opening 16 in which the gear 17 is formed when the aiming bolt 2 is coupled to the main body of the automobile headlamp Keep it at a certain distance without reaching.

The rubber ring 42 is additionally fitted to the body portion 10 to make tight engagement between the housing main body of the automobile head lamp and the aiming bolts 2 from impact or continuous vibration to prevent airtightness of the automotive head lamp give.

The spirally wound portion 12 of the aiming bolt 2 is for screwing the aiming bolt 2 with the housing of the headlamp (not shown), and the head portion 14 is formed as a hexagonal bolt- A screw can be used to screw the bolt (2) with the main body of the headlamp so that the aiming bolt (2) can be rotated using a tool, and a cross groove can be formed to allow the driver to use it.

The rotation control member 16 of the aiming bolt 2 allows the operator to easily rotate the aiming bolt 2 using a work tool (driver or the like) when the bulb irradiation angle of the headlamp is to be adjusted , And the gear 17 formed along the rim and the ends of the driver are interposed like a bevel gear.

The inventive aramid bolt (2) having the above-described construction is formed integrally with one metal wire material through various forging steps, and is manufactured by a process as shown in FIG.

First, as shown in (a), a metal wire rod having a long section and a circular cross section is cut to a required length to supply the round bar 30.

The supplied round bar 30 is chamfered at one end of the round bar 30 by a method such as extrusion or forging to form the chamfer 32 as shown in (b). The chamfered portion 32 facilitates entry of the round bar 30 into the mold in order to carry out stepwise forging to be performed in the future.

Next, as shown in (c) of the drawing, a step is formed in the one end (lower portion in the drawing) of the round bar 30 by the preforming of the washer engaging portion 13 larger than the diameter of the body portion 10, And a preliminary helix 12-1 extending downwardly from the body 10 and having a diameter smaller than the diameter of the body 10 are integrally formed.

Here, the preliminary spiral portion 12-1 is a portion in which the spiral portion 12 is formed later, and the body portion 10 becomes the body portion 10 constituting the aiming bolt 2 without any subsequent transformation process .

The round bar 30 remaining on the upper part of the body part 10 is a part deformed by the rotation regulating part 16 having the head part 14 and the gear 17 having hexagonal shape by a plurality of sequential forging processes . This is because the round bar 30 remaining on the upper part of the body part 10 can not be processed into the rotation control part 16 having the desired head part 14 and the gear 17 at a time, To transform it.

More specifically,

3 (d) and 3 (e), the round bar 30 remaining on the upper part of the body part 10 is subjected to a forging process to form the preliminary head part 14-1 and the preliminary rotation control part 16-1).

Particularly, in the primary and secondary preforming, as shown in the figure, a certain portion of the lower end of the round bar 30 remains at the diameter of the round bar 30 and is larger than the body portion 10 at the upper end of the body portion 10 So that the washer engaging portion 13 having a diameter is formed.

Next, as shown in (f), the preliminary head 14-1 and the preliminary rotation control 16-1 are forged, and the preliminary head 14-1 is formed into a head 14 And the preliminary rotation regulator 16-1 is formed into a circular plate shape.

Next, as shown in (g), the disk-shaped preliminary rotation regulator 16-1 is trimmed to form the gear 17 on the rim.

The diameter of the preliminary rotation regulating member 16 is generally 25 to 40, and the diameter of the gear 17 is not limited to the diameter The number can be from 15 to 30.

Finally, as shown in FIG. 5H, the preliminary rotation regulating member 16-1 having the gear 17 formed thereon is subjected to a bending process to complete the rotation regulating member 16 having the gears 17 formed along the bent edges thereof .

It is preferable to bend the end of the gear 17 of the rotation control member 16 at the time of bending so as to be maintained at a certain distance H from the engagement end of the washer engagement portion 13. [

Particularly, in the present invention, in the bending process of the preliminary rotation regulating member 16-1 with the gear 17, the bending process is performed in the same machine of the forming machine that goes to the previous step without using a separate bending machine. This is because it is not necessary to take out the products processed up to the step (g) and position them one by one with a dedicated bending machine for bending molding.

That is to say, FIG. 4 is a three-dimensionally diagrammatic view from the step (f) to the step (h) during the step by step through the foaming molding machine.

The fixed part molds 60 are fixed to a fixed mold (not shown) in one foaming molding machine. The movable part molds 62 are fixed to a moving mold (not shown) A return is made. Here, also in the step up to the previous step (e), the fixed part and the movable part molds 60 and 62 are fixed to the fixed mold and the movable mold in the same foaming molding machine to perform the forming molding.

The fixed and movable molds 60 and 62 are fixed in order along the advancing direction and the metal members gradually formed into the aiming bolts in each step are molded and then molded into a mold by a compacting device To the fixed mold 60 of the next process.

That is, when the preliminary spiral portion 12-1, the body portion 10 and the washer engagement portion 13 of the metal member are preferably positioned in the fixed die 60 at each step, The mold 60 is moved and returned to perform forming molding.
Herein, in the present invention, a process in which one metal wire is manufactured by the forming bolts 2 in various stages of molding is illustrated in order of the metal wire material being deformed on the basis of a vertically erected shape. In order to facilitate understanding of the operation of the mold apparatus, a movable frame (not shown) and a movable frame (not shown) are vertically positioned so that the movable frame moves up and down with respect to the fixed frame.
However, in actuality, the moving part mold 62 coupled to the moving frame is arranged to move left and right with respect to the fixed part mold 60, which is coupled to the fixing frame, .

Particularly in step (h), the bending part of the bending step is hardened due to the hardening of the raw material, so the critical damage degree should be measured so that the bending can be smoothly performed without breaking.

For this purpose, the applicant of the present application measured the critical damage degree at the time of bending through the hardness test as follows. In the following Table 1, a and b indicate the length and the length of the rounded portion 18 formed by the bending molding of the rotation control member 16 as shown in FIG. 5, and the unit is mm.

b
a 2 3 4 5 2 0.71 0.70 0.72 0.72 3 0.70 0.71 0.73 0.73

In the above test, SWCH10A, which is a carbon steel wire for cold rolling used for forming an Aiming Bolt, was used. The critical damage degree of the SWCH10A material currently built in the AFDEX Library is determined by the thickness t ) Is 1.4 to 2.0, it is found to be 1.5. That is, when the critical damage degree is 1.5 or more, it can not withstand the force and is broken.

As a result, in Table 1, when the length of a was in the range of 2 to 3 mm and the length of b was in the range of 2 to 3 mm in the bending process, the degree of damage was 0.70 to 0.71. This is a small value compared to the critical damage index of 1.5, which allows smooth bending without bending.

In the bending process, a spiral portion 12 is formed in the preliminary spiral portion 12-1 so that the aiming bolt 2 can be screwed to the main body of the head lamp (not shown).

The single-piece aiming bolt 2 of the automobile headlamp according to the embodiment of the present invention is integrally formed by a multistage forming process using a wire material of a metal material, thereby replacing a conventional method of welding by welding. In the multistage forming process, the product is manufactured from the same machine to the bending forming process, preventing the occurrence of cracks by preventing the critical damage degree of the bending portion from exceeding.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be limited by the described embodiments, but should be determined by the scope of claims and equivalents thereof.

INDUSTRIAL APPLICABILITY The present invention can be used to adjust the angle of illumination of automotive headlamps.

(2) - Aiming bolts of automotive headlamps
(10) - a body part (12) - a spiral part
(13) -Washer holding portion (14) -Head portion
(14-1) - spare head (16) - rotation adjuster
(16-1) - preliminary rotation regulator (17) - gear
(30) - round bar (32) - face mounting
(40) - Washer (42) - Rubber ring
(60) - Fixed die (62) - Movable die

Claims (4)

delete delete A method of manufacturing an automobile head lamp,
A first step of cutting a wire of metal having a long elongated shape and a circular cross section to a required length,
A second step of shaping the chamfered portion 32 so that one end of the round bar 30 cut by the above process is chamfered by any one of extrusion or forging to facilitate entry into the mold,
The round bar 30 is provided at one end thereof with a preform of a washer engaging portion 13 which is larger than the diameter of the body portion 10 by forging and a preliminary molding of the body portion 10 smaller than the diameter of the round bar 30, A third step of integrally forming a preliminary helix 12-1 having a diameter smaller than the diameter of the body,
The front head 14-1 and the preliminary rotation regulator 16-1 are formed by forging the remaining round bar 30 on the first and second main body portions 10, A fourth step of allowing the lower end of the round bar 30 to maintain the diameter of the round bar 30 so that a washer engaging part 13 having a larger diameter than the body 10 is formed on the upper end of the body part 10,
A fifth step of forming the preliminary head part (14-1) and the preliminary rotation control part (16-1) into a circular plate with a hexagonal head part (14) by forging;
A preliminary rotation regulating member 16-1 formed in the circular plate shape is trimmed to form a gear 17 at a rim,
A seventh process of bending the preliminary rotation regulator (16-1) having the gear (17) formed on the rim,
And the eighth step of forming the spiral part 12 in the spare spiral part 12-1,
The third to seventh processes are performed by a fixed part mold 60 fixed to a fixed frame in one forming machine and a movable part mold 62 fixed to the movable frame,
In the seventh step, the movable part mold 62 is bending the preliminary rotation adjusting member 16-1 while the thickness t of the preliminary rotation adjusting member 16-1 is 1.4 to 2.0 mm, Wherein the bending is performed such that the width (a) and the length (b) of the rounded portion formed by the bending molding are respectively in the range of 2 to 3 mm. delete
KR1020150080676A 2015-06-08 2015-06-08 Manufacturing method of one piece aming bolt of head lamp for vehicles KR101558315B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108160826A (en) * 2018-02-09 2018-06-15 浙江俊荣五金工业有限公司 For the molding die of trigonodont self-tapping screw
KR20220119805A (en) 2021-02-22 2022-08-30 극동볼트 주식회사 Bending apparatus for one piece aming bolt of head lamp for vehicles

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101502300B1 (en) 2014-12-01 2015-03-12 최병길 Manufacturing method for one piece aming bolt of head lamp for vehicles

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101502300B1 (en) 2014-12-01 2015-03-12 최병길 Manufacturing method for one piece aming bolt of head lamp for vehicles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108160826A (en) * 2018-02-09 2018-06-15 浙江俊荣五金工业有限公司 For the molding die of trigonodont self-tapping screw
KR20220119805A (en) 2021-02-22 2022-08-30 극동볼트 주식회사 Bending apparatus for one piece aming bolt of head lamp for vehicles
KR102446725B1 (en) 2021-02-22 2022-09-23 극동볼트 주식회사 Bending apparatus for one piece aming bolt of head lamp for vehicles

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