KR20170059592A - Punch supplying lubricant oil - Google Patents

Punch supplying lubricant oil Download PDF

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Publication number
KR20170059592A
KR20170059592A KR1020150163704A KR20150163704A KR20170059592A KR 20170059592 A KR20170059592 A KR 20170059592A KR 1020150163704 A KR1020150163704 A KR 1020150163704A KR 20150163704 A KR20150163704 A KR 20150163704A KR 20170059592 A KR20170059592 A KR 20170059592A
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KR
South Korea
Prior art keywords
diameter
passage
small
punch
path
Prior art date
Application number
KR1020150163704A
Other languages
Korean (ko)
Inventor
이선홍
이석만
Original Assignee
(주)지아이엘
이석만
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 (주)지아이엘, 이석만 filed Critical (주)지아이엘
Priority to KR1020150163704A priority Critical patent/KR20170059592A/en
Priority to PCT/KR2015/014066 priority patent/WO2017090818A1/en
Publication of KR20170059592A publication Critical patent/KR20170059592A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/34—Perforating tools; Die holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/18—Lubricating, e.g. lubricating tool and workpiece simultaneously

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Punching Or Piercing (AREA)

Abstract

The present invention relates to a punch for forming a hole in a thin plate made of metal or the like, capable of supplying lubricating oil to an outer surface of an end portion of the punch such that the punch has excellent durability. According to the present invention, the punch comprises: a body including a punching part located on one side in a longitudinal direction and a supporting part located on another in the longitudinal direction; a lubricant passage formed through the inside of the body in the longitudinal direction and having one or more outlets on an outer surface of the punching part; and a lubricating oil supply adjusting means for opening and closing the outlet of the lubricant passage.

Description

[0001] Punching lubricant oil [

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punch for forming a hole in a thin plate made of metal or the like, and more particularly, to a punch capable of supplying lubricating oil to an outer surface of a punch end portion and having excellent durability.

A punch is used to form a hole through which a fastening member such as a bolt can pass through a thin plate made of metal, plastic, or the like. The plate is vertically pushed to make a hole by a shearing force.

A heat generated by a large frictional force and a frictional force is generated between the outer surface of the punch end portion and the shear fracture surface of the plate material during the punching operation by the punch, so that the end portion of the punch can be easily worn.

10-1103895 is one of the prior art techniques for solving the above-mentioned problems. In the cross-section of the piercing punch 1, the end surface of the punch 1 and the outer surface And the lubricating fluid passage 31 opened to the outside of the punch 1 can reduce the heat generated by the frictional force and the frictional force at the outer surface of the punch 1.

However, in the above-described prior art, it is not easy to control the flow of the lubricant flowing through the lubricant passage 31, and even when the punch is not used, the lubricant may flow out to the outer surface of the punch.

KR 10-1103895 B1

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art as described above, and it is an object of the present invention to provide a punch capable of reducing lubricating oil generated on the outer surface of a punch, The present invention has been made to solve the above problems.

According to a preferred embodiment of the present invention, there is provided a punch for forming a hole in a thin plate material, the punch comprising: a body including a punching part located at one side in the longitudinal direction and a supporting part located at the other side in the longitudinal direction; A lubricant passage formed through the inside of the body in the longitudinal direction and having at least one outlet on an outer surface of the punching portion; And lubricating oil supply adjusting means for opening and closing the outlet of the lubricating oil passage.

According to another embodiment of the present invention, the lubricant supply adjusting means includes a small diameter passage penetrating the inside of the punching portion in the longitudinal direction, a large diameter passage penetrating the inside of the support portion in the longitudinal direction, A lubricant passage formed by a boundary portion connecting the large diameter passage and the large diameter passage, and a gill connecting the boundary portion and the outlet; The small diameter pin having an outer diameter larger than the diameter of the small diameter path and having a larger diameter than the diameter of the small diameter path, Diameter pin which is smaller than the diameter of the small-diameter pin and a joint which gradually changes in diameter and connects the small-diameter pin and the large-diameter pin; And a spring for pressing the end surface of the large diameter pin in the large diameter path.

According to another embodiment of the present invention, a second lubricant passage is formed in the operation pin, the second lubricant passage passing through the small-diameter pin in the longitudinal direction thereof, the inlet being located on the side of the joint, And a groove communicating with the small-diameter path is formed in the end surface of the punching portion.

According to another embodiment of the present invention, a lubricant oil groove is formed on the outer surface of the punching portion so as to communicate with the outlet of the lubricant passage.

The oil-feeding type punch according to the present invention can supply lubricating oil to the outer surface of the punching portion that directly passes through the plate material during punching operation, thereby reducing occurrence of heat due to frictional force and frictional force due to friction between the punching portion and the plate material.

The lubricating oil supply to the outer surface of the punching portion can be adjusted according to the working conditions.

When grooves or lubricant grooves are formed on the outer surface of the punching portion, the lubricating oil can be more evenly dispersed on the outer surface of the punching portion.

1 and 2 are sectional views of a oil-feeding type punch according to the present invention.
Fig. 3 is an explanatory diagram relating to the case where the oil-feeding type punch has a second lubricant passage.
FIG. 4 is an explanatory view of a case where the lubricant type punch is provided with a lubricant groove.

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

The present invention relates to a punch for forming a hole in a thin plate made of metal or the like, and more particularly, to a punch for forming a hole in a thin plate made of metal or the like, Friction force and the like can be reduced, but the supply of the lubricant can be easily controlled according to the operating state of the punch.

1 and 2 are sectional views of the oil-feeding type punch 1 according to the present invention.

The oil-feeding type punch (1) according to the present invention comprises a body (10), a lubricant passage (20) and a lubricant supply adjusting means.

The body 10 is formed in a shape close to a cylindrical shape as a part forming the outer appearance of the oil-feeding type punch 1 according to the present invention and has substantially the same outer shape as a general punch. A punching unit 11 for directly pressing and passing the plate material is disposed at one longitudinal side of the body 10 while a supporting unit 12 for supporting the punching unit 11 and joined to the top of the press is disposed at the other side. do.

The lubricating oil passage 20 is formed by penetrating the inside of the body 10 in the longitudinal direction. The lubricating oil passage 20 is periodically filled with lubricating oil or the lubricating oil passage 20 is connected to an external lubricating oil tank by a pipe, Lt; / RTI > The lubricant passage 20 is formed to have one or more outlets 21 on the outer surface of the punching portion 11 so that lubricating oil is supplied to the outer surface of the punching portion 11 which rubs against the plate material during the punching operation, 11 and the heat generated by the frictional force can be reduced. It is seen that the outlet 21 of the lubricant passage 20 is formed on the end surface of the punching portion 11 and on the outer surface of the boundary portion between the punching portion 11 and the supporting portion 12 .

The lubricating oil supply adjusting means opens the outlet 21 of the lubricating oil passage 20 during the punching operation and closes the opening 21 otherwise so that the lubricating oil can be supplied to the outer surface of the punching portion 11 only during the punching operation.

More specifically, the lubricant supply adjusting means may include a lubricant passage 20, an operating pin 30, and a spring 40 that are divided into a small-diameter passage 22 and a large-diameter passage 23.

The lubricating oil passage 20 when constituting the lubricating oil supply adjusting means includes a small diameter passage 22 penetrating the inside of the punching section 11 in the longitudinal direction, a small diameter passage 22 passing through the inside of the support section 12 in the longitudinal direction, A boundary portion 24 connecting the small diameter passage 22 and the large diameter passage 23 with a gradually changing diameter and a gutter 25 connecting the boundary portion 24 and the outlet 21. The diameter of the large diameter path 22 is larger than that of the small diameter path 22 and the diameter of the diameter of the large diameter path 22 is larger than that of the small diameter path 22, The diameter of which is slightly changed between the diameter of the small-diameter path (22) and the diameter of the large-diameter path (23), and the outer surface is formed to be inclined.

The operation pin 30 is disposed over a whole section of the small-diameter passage 22 and the boundary portion 24 and a part of the large-diameter passage 23 and has an outer diameter coinciding with the diameter of the small- Diameter pin (31) formed to be longer than the diameter of the large-diameter path (22), the large diameter pin (32) having an outer diameter larger than the diameter of the small diameter path (22) and smaller than the diameter of the large diameter path (23) Diameter pin 31 and a large-diameter pin 32. The large-

The spring (40) serves to press the end surface of the large diameter pin (32) in the large diameter path (23).

1, when the punching operation is not performed, the joint portion 33 is formed at a portion where the boundary portion 24 and the groove 25 meet, that is, an inlet 25a of the groove 25, The lubricating oil is not supplied to the outer surface of the punching section 11 because the lubricating oil does not flow into the groove 25. At this time, the distal end of the small-diameter pin 31, which is longer than the length of the small-diameter path 22, protrudes from the end surface of the punching section 11. [

On the other hand, when the punching operation is performed using the punch according to the present invention, as shown in Fig. 2, the small-diameter pin 31 protruded from the end surface of the punching portion 11 is pressed against the spring 40 So that the actuating pin 30 is moved in the direction of the large-diameter path 23. As a result, a gap is formed between the outer surface of the joint portion 33 and the inlet 25a of the guide passage 25 so that the lubricating oil in the large-diameter passage 23 is supplied to the outer surface of the punching portion 11 through the guide passage 25 .

When the punching operation is completed and the pressing of the small diameter pin 31 is released, the actuating pin 30 is returned to its original position by the elastic force of the spring 40 and the inlet 25a of the gilts 25 is closed again.

The inclination angle of the inner side surface of the boundary portion 24 and the inclination angle of the outer side surface of the joint portion 33 are formed so that the inner side surface of the boundary portion 24 and the outer side surface of the joint portion 33 are in close contact with each other, The entrance 25a of the guide passage 25 is formed to be inclined to the portion of the small-diameter passage 22 in the boundary portion 24 so that the large-diameter passage 23 and the guide passage 25 can be completely blocked from each other .

The operation pin 30 is provided with a small diameter pin 31 extending in the longitudinal direction thereof so that the entrance 34a is located on the side of the joint 33 and the exit 34b is located on the side of the distal end of the small diameter pin 31 And a groove 11a communicating with the small-diameter path 22 is formed in the end surface of the punching portion 11. The second lubricant passage 34 is formed in the second lubricant passage 34, Fig. 3 is an explanatory diagram of this case.

When the second lubricant passage 34 is formed in the small-diameter pin 31 as described above, the lubricant can not easily flow through the small-diameter passage 22, So that the lubricating oil can be supplied to the end surface of the punching portion 11. The groove 11a communicating with the small-diameter path 22 from the end face of the punching section 11 communicates with the second lubricant passage 34 whose outlet 34b is located on the side of the distal end of the small- 2 lubricating oil passage 34 to the end face of the punching portion 11. [0064] As shown in FIG.

The boundary portion 24 and the large-diameter path 23 are cut off from each other to form the boundary portion 24 as shown in Fig. 3A when the punch does not operate, The lubricant is not supplied to the second lubricant oil passage 34. When the operating pin 30 is pressed by the plate while the punch is operating, the boundary portion 24 and the large-diameter path 23 communicate with each other The lubricating oil may be supplied to the boundary portion 24 and the lubricating oil may be supplied to the second lubricating oil passage 34.

The inlet 34a of the second lubricant oil passage 34 is positioned to be shifted to the portion of the small diameter pin 31 among the joint portions 33 so as to be completely cut off from the large diameter path 23 when the punch is not operated desirable.

A lubricant oil groove 11b communicating with the outlet 21 of the lubricant passage 20 may be formed on the outer surface of the punching portion 11. [ Fig. 4 is an explanatory view of the lubricant oil groove 11b.

The lubricating oil discharged through the outlet 21 of the lubricating oil passage 20 is uniformly dispersed on the outer surface of the punching portion 11 as it flows along the lubricating oil groove 11b.

It is preferable that the lubricant grooves 11b are formed so as to communicate with each other in the circumferential direction and the longitudinal direction of the outer surface of the punching portion 11 as shown in Fig. 4 in terms of more evenly dispersing the lubricating oil.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. And thus fall within the scope of the present invention.

1: punch 10: body
11: Punching section 11a:
11b: lubricating oil groove 12:
20: lubricant passage 21: outlet
22: small road 23: large road
24: boundary 25:
30: Operation pin 31: Small pin
32: Large diameter pin 33:
34: second lubricant passage 34a: inlet
34b: outlet 40: spring

Claims (4)

In a punch for forming a hole in a thin plate material,
(10) comprising a punching part (11) on one side in the longitudinal direction and a supporting part (12) on the other side in the longitudinal direction;
A lubricant passage 20 formed in the body 10 in the longitudinal direction and having at least one outlet 21 on an outer surface of the punching portion 11; And
And lubricating oil supply controlling means for opening and closing the outlet (21) of the lubricating oil passage (20).
The method according to claim 1,
The lubricating oil supply adjusting means comprises:
A small diameter path 22 penetrating the inside of the punching portion 11 in the longitudinal direction, a large diameter path 23 penetrating the inside of the support portion 12 in the longitudinal direction, a small diameter path 22 gradually changing in diameter, A lubricant passage (20) comprising a boundary portion (24) connecting the large diameter passage (23) and a guide passage (25) connecting the boundary portion (24) and the outlet (21);
Diameter path 22 and the boundary section 24 and a part of the large-diameter path 23 so that the outer diameter of the small-diameter path 22 coincides with the diameter of the small- Diameter pin 32 having an outer diameter larger than the diameter of the small-diameter path 22 and smaller than the diameter of the large-diameter path 23 and a small diameter pin 31 having a diameter gradually changing, (30) which is composed of a joint part (33) connecting the base part (32); And
And a spring (40) for pressing the end surface of the large diameter pin (32) in the large diameter path (23).
3. The method of claim 2,
The operation pin 30 is provided with a small diameter pin 31 extending in the longitudinal direction thereof such that the inlet 34a is located on the side of the joint 33 and the outlet 34b is located on the side of the distal end of the small diameter pin 31. [ A second lubricant passage 34 is formed,
And a groove (11a) communicating with the small-diameter path (22) is formed in the end surface of the punching section (11).
The method according to claim 1,
Wherein a lubricant oil groove (11b) communicating with the outlet (21) of the lubricant oil passage (20) is formed on the outer surface of the punching portion (11).
KR1020150163704A 2015-11-23 2015-11-23 Punch supplying lubricant oil KR20170059592A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020150163704A KR20170059592A (en) 2015-11-23 2015-11-23 Punch supplying lubricant oil
PCT/KR2015/014066 WO2017090818A1 (en) 2015-11-23 2015-12-22 Lubricated punch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150163704A KR20170059592A (en) 2015-11-23 2015-11-23 Punch supplying lubricant oil

Publications (1)

Publication Number Publication Date
KR20170059592A true KR20170059592A (en) 2017-05-31

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ID=58763301

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Application Number Title Priority Date Filing Date
KR1020150163704A KR20170059592A (en) 2015-11-23 2015-11-23 Punch supplying lubricant oil

Country Status (2)

Country Link
KR (1) KR20170059592A (en)
WO (1) WO2017090818A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117531921A (en) * 2023-11-24 2024-02-09 宁波可挺汽车零部件有限公司 Stamping equipment for automobile rear lower control arm

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113579064B (en) * 2021-08-01 2023-03-21 合肥美菱有色金属制品有限公司 Stepped flaring punch structure and reaming process thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2502923B2 (en) * 1993-10-18 1996-05-29 日高精機株式会社 Mold equipment
JP3610694B2 (en) * 1996-10-02 2005-01-19 株式会社デンソー Press die having oil supply means for punched shear surface
JP2001137974A (en) * 1999-11-16 2001-05-22 Matsushita Electric Ind Co Ltd Die unit
JP2009082976A (en) * 2007-10-02 2009-04-23 Hitachi Appliances Inc Press forming apparatus
KR200446799Y1 (en) * 2009-04-16 2009-12-03 한국폴리텍7대학 산학협력단 Press Mold Lubricant Supply Device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117531921A (en) * 2023-11-24 2024-02-09 宁波可挺汽车零部件有限公司 Stamping equipment for automobile rear lower control arm

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Publication number Publication date
WO2017090818A1 (en) 2017-06-01

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