KR101600778B1 - Clamping apparatus for laminated workpieces - Google Patents

Clamping apparatus for laminated workpieces Download PDF

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Publication number
KR101600778B1
KR101600778B1 KR1020150119966A KR20150119966A KR101600778B1 KR 101600778 B1 KR101600778 B1 KR 101600778B1 KR 1020150119966 A KR1020150119966 A KR 1020150119966A KR 20150119966 A KR20150119966 A KR 20150119966A KR 101600778 B1 KR101600778 B1 KR 101600778B1
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KR
South Korea
Prior art keywords
pressing
workpiece
elastic
base plate
stacked
Prior art date
Application number
KR1020150119966A
Other languages
Korean (ko)
Inventor
박타명
Original Assignee
박타명
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Publication date
Application filed by 박타명 filed Critical 박타명
Priority to KR1020150119966A priority Critical patent/KR101600778B1/en
Application granted granted Critical
Publication of KR101600778B1 publication Critical patent/KR101600778B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B23Q3/061—Work-clamping means adapted for holding a plurality of workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q2703/00—Work clamping
    • B23Q2703/02—Work clamping means

Abstract

[0001] The present invention relates to a clamping device for clamping a plurality of workpieces stacked on an upper surface of a base plate, a base plate on which a plurality of workpieces are vertically stacked on an upper surface thereof, A pressing plate which is arranged on the upper surface so as to be movable in the vertical direction and which is provided at a position corresponding to the pressing hole with a pressing plate formed with a pressing hole at the center thereof and a lower end portion curved downwardly, And a clamping unit for clamping the workpiece.
According to the present invention as described above, the lower end of the curved elastic pressing portion presses the inner peripheral surface of the pressing plate formed with the pressing hole to constantly correct the position of the workpiece displaced by the curvature of the lower end of the elastic pressing portion, It is possible to prevent the bulb from being formed beforehand and to significantly improve the quality of the product.

Description

[0001] Clamping apparatus for laminated workpieces [0002]

More specifically, the lower end of the curved elastic pressing portion presses the inner peripheral surface of the pressing plate formed with the pressing hole to continuously position the workpiece displaced by the curvature of the lower end of the elastic pressing portion, So that the amount of work caused by the displacement of the workpiece can be prevented in advance, and the quality of the workpiece can be greatly improved.

Generally, a machine tool is installed around a machining position of a workpiece, that is, around a seating position where a workpiece is seated, and presses and supports one side of the workpiece to fix the workpiece to the seating position, A fixing device for preventing flow is used.

Such a fixing device is also referred to as a clamp, and it can be classified into a C-type clamp, a pipe clamp, a trigger clamp, and the like depending on its shape, and can be divided into a vertical type and a horizontal type depending on its fixing direction.

On the other hand, in the case where a plurality of workpieces with hollows are to be machined simultaneously, a plurality of workpieces are stacked at the forming position of the machine tool, and the workpieces are fixed after they are fixed. A vertical fixing device is usually used.

1 is a view showing a conventional vertical fixing device.

1, a conventional vertical fixing device 100 includes a base plate 110 on which a plurality of workpieces are stacked on an upper surface, a plurality of workpieces 110 extending upward from one side of the upper surface of the base plate 110, A pressing plate 130 mounted on the upper portion of the stacked workpiece G so as to be vertically movable and a pressing plate 130 coupled to the center rod 120, And a pressing member 140 for pressing the upper surface of the workpiece G in which the pressing plate 130 is stacked.

Such a conventional vertical fixing device 100 has a structure in which a plurality of workpieces G are stacked on the upper surface of a base plate 110 and a pressing member 140 screwed on the upper portion of the center bar 120 is rotated The pressing member 140 presses the upper surface of the pressing plate 130 and the pressurized pressing plate 130 presses the workpiece G stacked by the pressure of the pressing member 140 downward, Thereby fixing the workpiece G to the forming position.

However, in the conventional vertical fixing device 100, fine clearances exist between the center bar 120 and the workpiece G and between the center bar 120 and the pressing member 140. Due to such minute clearances, When the forming position of the workpiece G is displaced, the workpiece G is pressed and fixed in a state in which the pressing plate 130 is displaced, thereby causing a problem of defective machining, and there is a problem that roundness, There is a problem that the quality of the product is greatly deteriorated.

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide a clamping device, Which can prevent the machining amount due to the displacement of the workpiece in advance and can greatly improve the quality of the workpiece.

Another object of the present invention is to support the center of the workpiece stacked on the upper surface of the base plate and to support the other side of the workpiece, that is, to support the workpiece at two points so as to minimize the flow of the workpiece due to micro- And a clamping device for clamping the stacked workpiece.

According to an aspect of the present invention, there is provided a stacked workpiece fixing apparatus for fixing a plurality of workpieces stacked in a vertical direction to prevent a flow of workpieces, wherein a plurality of workpieces are vertically A plurality of workpieces stacked on an upper surface of the base plate, the base plates being vertically movably disposed on an upper surface of a workpiece positioned at the highest position among the plurality of workpieces stacked on the upper surface of the base plate, And a resilient pressing portion for elastically pressing the inner circumferential surface of the pressing plate on which the support hole is formed, wherein the pressing portion includes a pressing plate having a support hole formed at one side thereof and a lower end portion curved downwardly at a position corresponding to the supporting hole, As shown in Fig.

The resilient pressing portion includes a body fixedly mounted on the pressing plate and a lower portion movably installed in a vertical direction at a lower end portion of the body portion and having a downwardly curved lower end contacting the inner circumferential surface of the pressing plate formed with the supporting hole And a resilient member interposed between the body portion and the pressing portion and providing an elastic force downward to the pressing portion.

The apparatus may further include a support portion extending upward from one side of the base plate and supporting one side of the workpiece stacked on the upper surface of the base plate.

The support portion may include a center bar extending upward from one side of the base plate corresponding to the center of the workpiece and extending upward from the center of the base plate to support one side of the workpiece, And a guide rod extending upward from one side corresponding to one side of the workpiece and passing through one side of the workpiece to support the other side of the workpiece.

The elastic pressing part may further include an elasticity adjusting part provided on the elastic pressing part so as to be movable in the up and down direction and adjusting the elastic force of the elastic pressing part pressing the pressing plate by supporting the upper surface of the elastic pressing part.

According to the present invention as described above, the lower end portion of the curved elastic pressing portion presses the inner peripheral surface of the pressing plate formed with the pressing hole to continuously correct the position of the workpiece displaced by the curvature at the lower end of the elastic pressing portion, It is possible to prevent the bulb from being formed beforehand and to significantly improve the quality of the product.

The present invention can support the center of the workpiece stacked on the upper surface of the base plate and support the other side of the workpiece, that is, supporting the workpiece at two points, thereby minimizing the flow of the workpiece due to the micro clearance It is effective.

1 is a view showing a conventional vertical fixing device,
FIG. 2 is a perspective view of a stacked work fixing apparatus according to an embodiment of the present invention, FIG.
3 is an exploded perspective view of a stacked work fixing apparatus according to an embodiment of the present invention,
4 is an exploded perspective view of a body portion, a pressing portion, and an elastic member according to an embodiment of the present invention,
5 is a cross-sectional view of a fastening apparatus for a stacked workpiece according to an embodiment of the present invention,
6 is a view showing a state where a position of a workpiece is corrected by an elastic pressing portion according to an embodiment of the present invention.

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

FIG. 2 is an exploded perspective view of a stacked work fixing apparatus according to an embodiment of the present invention, FIG. 3 is an exploded perspective view of a stacked work fixing apparatus according to an embodiment of the present invention, FIG. 5 is a cross-sectional view of a fixing device for a stacked workpiece according to an embodiment of the present invention. FIG. 5 is an exploded perspective view of a body part, a pressing part, and an elastic member according to an embodiment of the present invention.

2 to 5, the stacked work fixing apparatus 1 according to an embodiment of the present invention includes a base plate 10, a support 20, a pressing plate 30, (40) and an elastic force adjusting unit (50).

The base plate 10 is formed in a substantially rectangular parallelepiped shape and is provided in an area to be machined of the workpiece G in the installation subject area and provided with a seating area on the upper surface on which the workpiece G is seated, It plays a role of supporting it stably.

The support portion 20 includes a center bar 21 extending upward from one side of the upper surface of the base plate 10 corresponding to the hollow G1 formed in the workpiece G and a lower bar And a guide rod 22 extending upward from the other side corresponding to one side of the workpiece G and supporting one side of the workpiece G stacked on the upper surface of the base plate 10, And serves to prevent the flow of the work G.

The center rod 21 is formed into a round bar shape having a diameter substantially corresponding to the hollow G1 of the workpiece G and has one side passing through the hollow G1 of the workpiece G, And supports the inner peripheral surface to prevent the work G from flowing.

The guide bar 22 is formed in a round bar shape having a diameter corresponding to the through hole G2 formed in one side of the workpiece G and one side passes through the through hole G2 of the workpiece G, G to prevent the flow of the workpiece G together with the center bar 21. [0064]

That is, the supporting part 20 according to an embodiment of the present invention can minimize the flow due to micro clearances by supporting the workpiece G at two points through the center rod 21 and the guide rod 22. [

The presser plate 30 is formed in a substantially rectangular plate shape and is provided on the upper portion of the stacked workpiece G so as to be movable in the up and down direction and has a through hole 31 through which the center bar 21 passes, .

The presser plate 30 is formed with a support hole 32 at one side corresponding to the center of the workpiece G so that the pressing portion 43 of the elastic pressing portion 40, And presses the upper surface of the workpiece G stacked by the elastic force of the elastic pressing portion 40 and fixes the upper surface of the workpiece G stacked thereon.

The elastic pressing part 40 includes a support base 41 extending upward from one side of the base plate 10 and formed in a T shape and fixed to the upper part of the pressing plate 30 on one side of the support base 41 An elastic member 44 interposed between the body portion 42 and the pressing portion 43. The pressing member 43 is provided at the lower end of the body portion 42 so as to be movable up and down. And the inner periphery of the pressing plate 30 formed with the support hole 32 is pressed through the lower end of the curved pressing portion 43 so that the pressing plate 30 uniformly presses the workpiece (G).

The support base 41 includes a threaded rod 41a fixed to one side of the base plate 10 in a vertical direction and a support body 41b coupled to the upper portion of the threaded rod 41a, The elastic member 44 interposed between the pressing portions 43 and 42 and the pressing portion 43 firmly supports the body portion 42 so as to provide an elastic force to the pressing portion 43. [

The body portion 42 is formed in a substantially cylindrical shape and has a receiving space 42a formed therein. When the lower end portion of the body portion 42 is opened and the pressing portion 43 described later is moved up and down, And serves to provide the accommodation space 42a of the elastic member 44. [

The pushing portion 43 is formed in a generally pin shape and is provided at the lower end portion of the body portion 42 so as to be movable in the up and down direction and the lower end portion thereof is bent downward.

The lower end of the bending portion 43 is supported by the inner peripheral edge of the pressing plate 30 having the support hole 32 and is provided with a pressing force by the elastic force of the elastic member 44, And serves to uniformly and uniformly apply a pressing force to the pressing plate 30 through the curved lower end portion.

The elastic member 44 is interposed between the body portion 42 and the pressing portion 43 to provide an elastic force downwardly to the pressing portion 43 as described above. Spring can be used.

The elastic force adjusting portion 50 is screwed to the upper end of the threaded rod 41a so as to be movable in the vertical direction and supports the upper surface of the elastic pressing portion 40 at the vertically moved position, And the elastic force adjusting portion 50 may be a general nut member.

6 is a view showing a state where a position of a workpiece is corrected by an elastic pressing part according to an embodiment of the present invention.

The operation of the fixing device 1 of the stacked workpiece according to one embodiment of the present invention having such a structure will be described with reference to FIG.

A supporting body 41b provided with an elastic pressing portion 40 is coupled to the upper portion of the threaded rod 41a with the workpiece G stacked on the upper surface of the base plate 10, And the elastic force adjusting portion 50 is coupled to the upper end of the elastic force adjusting portion 50. [

At this time, the lower end portion of the pressing portion 43 is supported on the inner peripheral edge of the pressing plate 30 formed with the supporting hole 32, and the elastic force adjusting portion 50 is rotated downward to move the pressing force of the elastic member 44 So as to adjust the elasticity pressure applied to the pressing plate 30.

As described above, according to the present invention, the elastic force of the elastic member 44 is provided to the pressing plate 30 through the curved lower end of the pressing portion 43, and the pressing member 30, which is provided with the elastic force, The workpiece G is firmly fixed to the forming position.

On the other hand, when the position of the workpiece G is to be displaced due to the micro clearance between the center bar 21 and the workpiece G, the pressing portion 43 is moved toward the center of the pressing plate 30 by the curvature of the curved lower end portion Even if the workpiece G tends to be displaced by applying the concentrated load, the position of the workpiece G is constantly corrected by the concentrated load of the pressing portion 43 so that the fixed state of the workpiece G is kept constant do.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications and variations without departing from the spirit and scope of the invention. Accordingly, the appended claims are intended to cover such modifications or changes as fall within the scope of the invention.

10: base plate 20: support
21: center rod 22: guide rod
30: pressure plate 31: through hole
32: Support hole 40: Elastic pressing part
41: support base 41a:
41b: support body 42: body part
42a: accommodation space 43:
44: elastic member

Claims (5)

A clamping device for clamping a plurality of workpieces stacked in a vertical direction to prevent flow of the clamping device,
A base plate on which a plurality of workpieces are stacked in a vertical direction;
A pressing plate disposed on an upper surface of a work piece positioned at the uppermost position among the plurality of work pieces stacked on the upper surface of the base plate so as to be movable in a vertical direction and having a support hole formed on one side corresponding to the center of the plurality of work pieces; And
And an elastic pressing portion for elastically pressing the inner circumferential surface of the pressing plate on which the supporting hole is formed, wherein the lower pressing portion is located at a position corresponding to the supporting hole.
The method according to claim 1,
The elastic pressing portion
A body portion fixed to the upper portion of the pressing plate;
A pressing part installed on a lower end of the body part so as to be movable in a vertical direction and having a downwardly curved lower end in contact with an inner circumferential surface of the pressing plate on which the supporting hole is formed; And
And an elastic member interposed between the body part and the pressing part and providing an elastic force downward to the pressing part.
The method according to claim 1,
Further comprising a support portion extending upward from one side of the base plate and supporting one side of the workpiece stacked on the upper surface of the base plate.
The method of claim 3,
The support
A center rod extending upward from one side of the base plate corresponding to the center of the workpiece and supporting the one side of the workpiece through the center of the workpiece; And
And a guide rod extending upward from one side of the base plate corresponding to one side of the workpiece and passing through one side of the workpiece to support the other side of the workpiece. Fixing device for work piece.
The method according to claim 1,
Further comprising an elastic force adjusting unit provided on an upper portion of the elastic pressing unit to adjust an elastic force of the elastic pressing unit that supports the upper surface of the elastic pressing unit and presses the pressing plate. Fixing device for work piece.
KR1020150119966A 2015-08-26 2015-08-26 Clamping apparatus for laminated workpieces KR101600778B1 (en)

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Application Number Priority Date Filing Date Title
KR1020150119966A KR101600778B1 (en) 2015-08-26 2015-08-26 Clamping apparatus for laminated workpieces

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Application Number Priority Date Filing Date Title
KR1020150119966A KR101600778B1 (en) 2015-08-26 2015-08-26 Clamping apparatus for laminated workpieces

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KR101600778B1 true KR101600778B1 (en) 2016-03-08

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KR1020150119966A KR101600778B1 (en) 2015-08-26 2015-08-26 Clamping apparatus for laminated workpieces

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107914210A (en) * 2017-12-21 2018-04-17 武汉华海通用电气有限公司 A kind of carbon brush curved surface grinds numerically-controlled machine tool
CN112207591A (en) * 2020-10-14 2021-01-12 合肥工业大学 High-speed cutting clamp for small-diameter workpiece

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2556134B2 (en) * 1989-06-12 1996-11-20 三菱電機株式会社 Method for manufacturing metal vapor discharge lamp
JP2003039222A (en) * 2001-07-26 2003-02-12 Matsushita Electric Works Ltd Processing equipment for end face of laminated board and clamp
KR101449267B1 (en) * 2013-04-11 2014-10-08 신광자 Fixing apparatus for workpeice
KR101499559B1 (en) * 2013-12-17 2015-03-12 주식회사 영일인덱스 Jig hydraulic indirect clamping device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2556134B2 (en) * 1989-06-12 1996-11-20 三菱電機株式会社 Method for manufacturing metal vapor discharge lamp
JP2003039222A (en) * 2001-07-26 2003-02-12 Matsushita Electric Works Ltd Processing equipment for end face of laminated board and clamp
KR101449267B1 (en) * 2013-04-11 2014-10-08 신광자 Fixing apparatus for workpeice
KR101499559B1 (en) * 2013-12-17 2015-03-12 주식회사 영일인덱스 Jig hydraulic indirect clamping device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107914210A (en) * 2017-12-21 2018-04-17 武汉华海通用电气有限公司 A kind of carbon brush curved surface grinds numerically-controlled machine tool
CN112207591A (en) * 2020-10-14 2021-01-12 合肥工业大学 High-speed cutting clamp for small-diameter workpiece
CN112207591B (en) * 2020-10-14 2022-03-15 合肥工业大学 High-speed cutting clamp for small-diameter workpiece

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