KR101749157B1 - Cam unit with lubricant oil supplier - Google Patents

Cam unit with lubricant oil supplier Download PDF

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Publication number
KR101749157B1
KR101749157B1 KR1020150165142A KR20150165142A KR101749157B1 KR 101749157 B1 KR101749157 B1 KR 101749157B1 KR 1020150165142 A KR1020150165142 A KR 1020150165142A KR 20150165142 A KR20150165142 A KR 20150165142A KR 101749157 B1 KR101749157 B1 KR 101749157B1
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KR
South Korea
Prior art keywords
cam
sliding surface
mold
cam slide
rail groove
Prior art date
Application number
KR1020150165142A
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Korean (ko)
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KR20170060689A (en
Inventor
이선홍
이석만
Original Assignee
(주)지아이엘
이석만
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Application filed by (주)지아이엘, 이석만 filed Critical (주)지아이엘
Priority to KR1020150165142A priority Critical patent/KR101749157B1/en
Publication of KR20170060689A publication Critical patent/KR20170060689A/en
Application granted granted Critical
Publication of KR101749157B1 publication Critical patent/KR101749157B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
    • B30B1/261—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks by cams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0005—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for briquetting presses
    • B30B15/0011—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for briquetting presses lubricating means

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

Abstract

The present invention relates to a cam unit, which can supply lubricating oil to sliding surfaces of a cam slide and a guide rail at any time, and has excellent durability.
Wherein the cam unit is attached to a top mold of a press die and moves up and down together with the top mold, the cam driver being provided at a lower portion thereof with a first sliding surface formed obliquely to a direction in which the top mold moves; A sliding surface portion having a second sliding surface in parallel with the first sliding surface and having a machining tool attached to a side thereof, the sliding surface being positioned on a lower mold of the press mold and sliding in a horizontal direction as the cam driver moves up and down; A cam groove formed on a lower surface of the sliding surface portion and having a rail groove formed with a horizontal rail groove on a lower surface thereof; And a guide rail attached to the lower mold of the press mold and guiding the cam slide to be slid, the upper surface of the guide rail being engaged with the rail groove to guide the cam slide, And a lubricating oil passage through which the outlet communicates with the rail groove is formed.

Description

Cam unit with lubricant oil supplier "

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cam unit, and more particularly, to a class-type cam unit capable of supplying lubricating oil to a sliding surface of a cam slide and a guide rail at any time, and having excellent durability.

Plate products having complex shapes such as automobile panels are manufactured through various stages of pressing such as drawing, forming, restriking, trimming and piercing.

The press mold is usually made up of a top mold and a bottom mold. The upper mold moves up and down and presses the workpiece placed on the lower mold to make the product into a designed shape. Among the above processes, the upper mold of the press mold is machined You may need to move the tool. In this case, a cam unit is used to switch the upward motion of the upper mold in the other direction by using the inclined surface.

As shown in Fig. 1, the cam unit has a cam driver (a) which moves up and down along an upper figure and has an inclined surface at its lower part, and a configuration in which a machining tool is attached, and has an inclined surface facing the inclined surface of the cam driver A cam slide (b) moving left and right as the cam driver moves up and down, and a guide rail (c) engaged with the cam slide at the lower portion of the cam slide to guide the leftward and rightward movement of the cam slide, Since the cam slide moves to the left and right along the rail and forces the cam slide in the oblique direction to the guide rail, a large frictional force is generated between the cam slide and the guide rail. This frictional force worsens the cam slides and the guide rails and decreases the accuracy of the machining. In order to prevent this, the cam slides must be frequently maintained and repaired.

In order to solve this problem, in the sliding structure of the cam type press die of Registration No. 10-0428297, a grease groove is formed on the sliding surface of the lower die 105 on which the operating cam 113 is slid, And a method of reducing the frictional force between the lower die and the lower die.

However, since the amount of the grease that can be filled in the grease groove is limited, there is a problem that the work must be frequently stopped to fill the grease.

KR 10-0428297 B1 KR 20-0265750 Y1

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the conventional art, and it is an object of the present invention to provide a lubricating oil supply apparatus and a lubricating oil supply apparatus which can supply lubricating oil to a sliding surface of a cam slide and a guide rail without interruption, The present invention has been made in view of the above problems.

According to a preferred embodiment of the present invention for solving the above-mentioned problems, a cam unit that operates together with an operation of a press die is attached to an upper mold of a press mold and moves up and down together with the upper mold, A cam driver having a first sliding surface formed obliquely to a direction in which the upper mold moves; A sliding surface portion having a second sliding surface in parallel with the first sliding surface and having a machining tool attached to a side thereof, the sliding surface being positioned on a lower mold of the press mold and sliding in a horizontal direction as the cam driver moves up and down; A cam groove formed on a lower surface of the sliding surface portion and having a rail groove formed with a horizontal rail groove on a lower surface thereof; And a guide rail attached to the lower mold of the press mold and guiding the cam slide to be slid, the upper surface of the guide rail being engaged with the rail groove to guide the cam slide, And a lubricant passage communicating with the rail groove is formed at the outlet.

According to another embodiment of the present invention, the lubricating oil passage is divided into a plurality of sections in the cam slide and has a plurality of outlets.

According to another embodiment of the present invention, the guide rail is located in a box-shaped collecting case whose top is opened.

According to another embodiment of the present invention, the cam slide is provided with a cover for covering an upper portion of the collecting case.

The cam unit according to the present invention can supply the lubricating oil to the contact surface between the cam slide and the guide rail at any time through the lubricating oil passage penetrating the cam slide up and down without disassembling the components of the cam unit so that the cam slide and the guide rail wear Therefore, it is not necessary to frequently perform maintenance to prevent the precision of the work from deteriorating due to abrasion.

The housing-housing case and the cover covering the upper portion of the housing-housing case prevent foreign matter from entering the contact surface between the cam slide and the guide rail, so that the cam slide can always be smoothly slid.

The collecting case may also serve to prevent the lubricating oil introduced through the lubricating oil passage from leaking to another place.

Fig. 1 is an explanatory diagram of an operation method of the cam unit.
2 is an assembled perspective view of a cam unit according to the present invention.
3 is an exploded perspective view of the cam unit according to the present invention.
Fig. 4 is an explanatory diagram of a case where the lubricating oil passage constituting the cam unit according to the present invention is formed by being divided into several branches.

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

The present invention relates to a cam unit for changing a vertical movement of a top mold in a horizontal direction when the direction of movement of the machining tool needs to be different from the direction in which the top mold of the press mold is moved, And lubricating oil can be supplied from time to time between the cam slide with the machining tool attached thereto and the guide rail guiding the sliding of the cam slide, thereby having excellent durability.

Fig. 2 is an exploded perspective view of the cam unit 1 according to the present invention, and Fig. 3 is an exploded perspective view of the cam unit.

The cam unit 1 according to the present invention includes the cam driver 10, the cam slide 20 and the guide rail 30, unlike the conventional cam unit, And a lubricant passage (40).

The cam driver 10 is attached to the upper mold of the press and moves up and down together with the upper mold. The cam driver 10 has a first sliding surface 11 formed at an upper portion thereof at an oblique angle with respect to the direction of movement of the upper mold.

The cam slide 20 is positioned on the lower mold of the press die and is composed of the sliding surface portion 21 and the rail groove portion 22 as the cam driver 10 slides in the horizontal direction as it moves up and down. The sliding surface portion 21 has a second sliding surface 21a parallel to the first sliding surface 11 of the cam driver 10 and a machining tool attached to the side surface. The rail groove portion 22 is located below the sliding surface portion 21 and has a horizontal rail groove 22a formed on the lower surface thereof.

2 and 3, the machining tool is not shown, but the block 24 to which the machining tool is attached is shown.

The first sliding surface 11 of the cam driver 10 and the second sliding surface 21a of the cam slide 20 are separated from each other when the top of the press with the cam driver 10 is raised, The cam slide 20 is slid while the first sliding surface 11 pushes the second sliding surface 21a when the cam driver 10 comes down. The upward and downward movement of the upper mold of the press die is converted into the movement in the horizontal direction by the first and second sliding surfaces 11 and 21a formed obliquely to the moving direction of the press die.

The guide rail 30 is attached to the lower mold of the press mold and has an upper surface engaging with the rail groove 22a of the cam driver 10 so that the cam slide 20 can be moved in a predetermined direction Guide.

The rail grooves 22a and the guide rails 30 may be formed obliquely at an angle close to horizontal rather than horizontally according to the direction in which the tool is to be moved.

The lubricant passage 40 has an inlet 42 formed in the upper surface of the sliding surface portion 21 and an outlet 41 communicating with the rail groove 22a through the inlet of the lubricant passage 40, The lubricating oil flows into the rail groove 22a and is applied between the inner surface of the rail groove 22a and the upper surface of the guide rail 30. [

As a result, the frictional force between the cam slide 20 and the guide rail 30 can be reduced when the cam slide 20 is slid, so that the abutment surfaces of the cam slide 20 and the guide rail 30 are not easily worn. Since the entrance of the lubricant passage 40 is located on the upper surface of the sliding surface portion 21 constituting the upper portion of the cam slide 20, there is no need to disassemble the cam unit to inject lubricant, Lubricating oil can be supplied between the slide (20) and the guide rail (30) at any time.

The lubricant passage 40 can be divided into a plurality of sections in the cam slide 20 to have a plurality of outlets 41. [ FIG. 4 is an explanatory view of this lubricant passage 40. As shown in FIG. 4 (a) is an elevational view of the cam slide 20, and FIG. 4 (b) is a perspective view of the cam slide 20 as viewed from below.

The lubricant passage 40 having a plurality of outlets allows the lubricant to be rapidly applied to the contact surface of the cam slide 20 and the guide rail 30 as a whole.

On the inner surface of the rail groove 22a, an elongated dispersion groove g communicating with the outlet 41 of the lubricating oil passage 40 is formed as shown in Fig. 4 (b) to help lubricating oil to be applied more evenly.

The guide rails 30 may be located in a box-shaped collecting case 50 having an open top.

The housing case 50 serves to prevent the lubricating oil that has descended along the lubricating oil passage 40 from leaking to another place and to prevent foreign substances from entering the contact surface between the cam slide 20 and the guide rail 30. [

This housing case 50 is formed so as to include the sliding path of the cam slide 20 so that the space inside the housing case 50 does not obstruct the sliding of the cam slide 20, It is preferable not to be formed beyond the height of the trench 22.

The lid 51 may be provided on the upper portion of the collecting case 50 so as to cover the space of the collecting case 50 as long as it does not overlap the sliding path of the cam slide 20.

When the cam unit 1 according to the present invention further includes the collecting case 50, the outlet 41 of the lubricating oil passage 40 is formed not only toward the rail groove 22a, but also to the side surface of the rail groove 22 So that the side surface of the rail groove portion 22 and the inner surface of the collecting case 50 can be prevented from rubbing against each other.

The cam slide 20 may be provided with a cover 23 covering the upper portion of the collecting case 50.

As described above, the housing case 50 is formed so as not to interfere with the sliding path of the cam slide 20, so that even if the upper part of the housing case 50 is covered with the cover 51, And is formed on both sides in the direction of forming the rail groove 22a to cover the open portion of the collecting case 50. [ Accordingly, it is possible to prevent foreign matter from entering the contact surface between the cam slide 20 and the guide rail 30 more effectively.

The cam unit 1 according to the present invention may further include a return spring 60 for returning the cam slide 20 moved by the cam driver 10 back into place.

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: Cam unit 10: Cam driver
11: first sliding surface 20: cam slide
21: sliding surface portion 21a: second sliding surface
22: rail groove portion 22a: rail groove
23: cover 30: guide rail
40: Lubricant passage 41: Outlet
50: Housing case

Claims (4)

In a cam unit that operates together with a press die,
A cam driver (10) attached to a top mold of a press mold and moving up and down together with a top mold, the cam driver (10) having a first sliding surface (11) formed obliquely to a direction in which the top mold moves;
The cam driver 10 is positioned on the lower mold of the press mold and slides in the horizontal direction as the cam driver 10 moves up and down. The second sliding surface 21a is parallel to the first sliding surface 11, A cam slide 20 including a sliding surface portion 21 to which a processing tool is attached and a rail groove portion 22 which is located below the sliding surface portion 21 and has a horizontal rail groove 22a formed on a lower surface thereof, ; And
And a guide rail 30 attached to the lower mold of the press mold and guiding the sliding of the cam slide 20 so that the upper surface thereof is engaged with the rail groove 22a,
The cam slide 20 is provided with a lubricating oil passage 40 through which the cam slide 20 is vertically passed and the outlet 41 communicates with the rail groove 22a,
The guide rail 30 is located in a box-shaped collecting case 50 having an open top,
And a cover (23) for covering an upper portion of the collecting case (50) is attached to the cam slide (20).
The method according to claim 1,
Characterized in that the lubricant passage (40) is divided into several sections within the cam slide (20) and has a plurality of outlets.
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KR1020150165142A 2015-11-25 2015-11-25 Cam unit with lubricant oil supplier KR101749157B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150165142A KR101749157B1 (en) 2015-11-25 2015-11-25 Cam unit with lubricant oil supplier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150165142A KR101749157B1 (en) 2015-11-25 2015-11-25 Cam unit with lubricant oil supplier

Publications (2)

Publication Number Publication Date
KR20170060689A KR20170060689A (en) 2017-06-02
KR101749157B1 true KR101749157B1 (en) 2017-06-21

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101855884B1 (en) * 2018-02-02 2018-06-20 김홍달 Punching system using cam unit and Punching method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100428297B1 (en) * 2002-06-25 2004-04-28 현대자동차주식회사 Sliding structure of metallic pattern for cam type press
KR101087530B1 (en) * 2009-09-21 2011-11-28 주식회사 루보 The combination of the cam-base structure of the cam-slide

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100428297B1 (en) * 2002-06-25 2004-04-28 현대자동차주식회사 Sliding structure of metallic pattern for cam type press
KR101087530B1 (en) * 2009-09-21 2011-11-28 주식회사 루보 The combination of the cam-base structure of the cam-slide

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