KR900000618B1 - Clamping chuck for the tapered working material - Google Patents

Clamping chuck for the tapered working material Download PDF

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Publication number
KR900000618B1
KR900000618B1 KR1019860011531A KR860011531A KR900000618B1 KR 900000618 B1 KR900000618 B1 KR 900000618B1 KR 1019860011531 A KR1019860011531 A KR 1019860011531A KR 860011531 A KR860011531 A KR 860011531A KR 900000618 B1 KR900000618 B1 KR 900000618B1
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KR
South Korea
Prior art keywords
operating shaft
draw bar
jaw
ball
workpiece
Prior art date
Application number
KR1019860011531A
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Korean (ko)
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KR880007171A (en
Inventor
서향용
김웅범
Original Assignee
대우중공업 주식회사
이경훈
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.)
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Publication date
Application filed by 대우중공업 주식회사, 이경훈 filed Critical 대우중공업 주식회사
Priority to KR1019860011531A priority Critical patent/KR900000618B1/en
Publication of KR880007171A publication Critical patent/KR880007171A/en
Application granted granted Critical
Publication of KR900000618B1 publication Critical patent/KR900000618B1/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
    • B23Q3/062—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
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/026—Chucks the radial or angular position of the tool being adjustable
    • B23B31/0261—Chucks the radial or angular position of the tool being adjustable for centering the tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2260/00—Details of constructional elements
    • B23B2260/034—Drawbars
    • 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

Soft jaws are fastened to jaws with socket bolts. An operating shaft and the soft jaws are also fastened with socket bolts with keys intervened therebetween. A cylinder housing a spring is intervened at the distal end of the operating shaft. The operating shaft can be rotated around a hinge according to the forward and backward movement of a draw bar through an eccentric sliding ball intervened therebetween. The draw bar can be reciprocated in the bush which is threadedly clamped to the body.

Description

테이퍼(Taper) 공작물 클램핑 척Taper workpiece clamping chuck

제1도는 본 발명의 외관 정면도.1 is an external front view of the present invention.

제2도는 본 발명의 내부 단면도.2 is an internal cross-sectional view of the present invention.

제3도는 종래도.3 is a conventional diagram.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 죠오(Jaw) 2, 4 : 소켓볼트(Socket Bolt)1: Jaw 2, 4: Socket Bolt

3 : 소프트죠오(Soft Jaw) 5 : 키이(Key)3: Soft Jaw 5: Key

6 : 힌지 7 : 베어링레이스6: hinge 7: bearing race

8 : 작동축 9 : 요우크(Yoke)8: working shaft 9: yoke

10 : 반달키이 11 : 편심슬라이딩볼10: Bandalki 11: Eccentric Sliding Ball

12 : 몸체 13 : 부쉬12 body 13 bush

14 : 공작물 15 : 커버14 workpiece 15: cover

16 : 드로우바아 17 : 실린더16 drawbar 17 cylinder

본 발명은 경사진 공작물에 대하여 척킹(Chucking)력이 효율적으로 작용하는 전용척에 관한 것이다.The present invention relates to a dedicated chuck in which a chucking force effectively acts on an inclined workpiece.

더 상세히는, 지렛대 원리가 적용되어진 것으로서, 공작물을 파지하는 죠오의 척킹력을 배가 시키기 위하여 드로우바아가 후진될때 작동축의 후단은 힌지를 중심으로 상향 회동이 이루어지면 이때 죠오는 공작물에 대하여 척킹력의 방향이 안쪽으로 작동되도록 하려는 것이다.More specifically, the principle of the lever is applied. When the drawbar is retracted to double the jaw holding force of the workpiece, the rear end of the working shaft is rotated about the hinge, and then the joo We want the direction to work inward.

공작기계의 효율적인 작업을 실시하기 위하여 특히, 선반에 있어서는 제품의 특성에 따라서 주조품을 그대로 척에 클램핑하는 작업이 많아지고 있다.In order to perform an efficient work of a machine tool, especially in a lathe, according to the characteristic of a product, the work which clamps a cast product to a chuck is increasing.

이와 같은 작업방법을 채택하고 있는 이유는 대량 생산 체제에서 한 공정의 단축으로 파급되는 생산성에 대한 문제가 타사오의 경쟁력에 대처할 수 있는 주단이 되기 때문이다.The reason for adopting such a work method is that the problem of productivity, which is caused by the shortening of one process in the mass production system, becomes a master to cope with the competitiveness of Dasao.

그래서 어느 한 공정을 단축시키기 위해서 다양한 전용 공구 및 장치가 끊임없이 연구, 개발되고 있는 것이다.Therefore, various dedicated tools and devices are constantly being researched and developed to shorten any one process.

이와 같은 취지에서 본 발명의 착상이 시작되었는데, 잘아는 사실이지만 척의 기능으로는 동심원의 공작무클램핑 부위의 단면이 일정한 원형, 사각 및 육각등에 대해서 클램핑이 이루어짐으로써 클램핑 부위에 전반적으로 척킹력을 작용시켜 공작물을 안정하게 하는 것인데, 클램핑 부위가 테이퍼 형상으로 된 공작물에 대해서는 까다로운 난제로 알려지고 있다.The idea of the present invention has been started from the above-mentioned purpose. As is well known, the function of the chuck acts as a chucking force on the clamping part by clamping the circular, square and hexagonal sections of the concentric circular clamping part. It is known to be a difficult problem for a workpiece in which the clamping portion is tapered in order to stabilize the workpiece.

종래의 방법을 살펴 보면, 제3a도에 도시된 바와같이 테이퍼의 일부분만 클램핑이 되는데 특히 외경 절삭 작업시에는 절삭공구의 선단이 공작물에 닿는 부위가 공작물의 회전 중심과 절삭력 때문에 공작물의 회전 중심이 편심되어 가공 정밀도를 저하시킴은 물론 심한 경우에는 공작물이 이탈하는 안전 사고에 대한 문제가 있다.In the conventional method, only a portion of the taper is clamped as shown in FIG. There is a problem with a safety accident in which the eccentricity reduces the machining precision and, in severe cases, the workpiece leaves.

b도 및 c도는 a도의 결점을 다소 해결한 것으로서, 수직으로 작용하는 척킹력에 대하여 공작물이 이탈하려는 분력이 발생함으로써 절삭공구에 절삭저항이 부가시키는 단점이 있는 것이다.b and c are some of the drawbacks of a, and the disadvantage is that the cutting force is added to the cutting tool by generating a component force that the workpiece deviates from the vertically acting chucking force.

본 발명은 상기의 제반 문제점을 해결하기 위하여 안출된 것으로써, 본 발명에서 응용하고자 하는 것은 척킹력을 수직으로 작용시켜 공작물 클램핑하던 방법에서 지렛대 원리를 적용하여 공작물의 척킹력을 끌어들이려는 것이다.The present invention has been made to solve the above-mentioned problems, the application of the present invention is to draw the chucking force of the workpiece by applying the lever principle in the method of clamping the workpiece by acting vertically the chucking force.

이하, 본 발명의 바람직한 구성과 작용 및 효과 등을 첨부된 도면과 관련하여 상세히 기술하면 명백히 이해할 수 있을 것이다.Hereinafter, with reference to the accompanying drawings, the preferred configuration, operation and effects of the present invention will be clearly understood.

제1도는 본 발명에 의한 3개의 죠오(1)가 공작물을 클램핑한 외관 정면도이다.1 is an external front view in which three jaws 1 according to the present invention clamp a workpiece.

제2도는 본 발명의 구성 단면도로서, 외부에는 소프트죠오(3)에 죠오(1)를 소켓볼트(2)로 체결하고 작동축(8)과 소프트 죠오(3)사이에는 키이(5)를 개재시켜 소켓볼트(4)로 체결하며, 힌지(6)를 중심으로 베어링 레이스(7)에서 회전하는 작동축(8)은 편심이 형성되고 작동축(8)의 말단에는 스프링을 내장한 실린더(17)가 개재되며 드로우바아(16)의 중심에서 방사형으로 뻗은 요우크(9)의 내부에는 드로우바아(16)의 전후진 운동에 따라서 힌지(6)을 중심으로 작동축(8)이 회전할 수 있도록 편심슬라이딩볼(11)을 삽입하여 편심슬라이딩볼(11)과 작동축(8)사이에는 반달키이(10)를 개재시켜으며, 드로우바아(16)는 몸체(12)에 나사 체결된 부쉬(13)내에서 왕복운동할 수 있도록 한 것을 특징으로 한 것이다.2 is a cross-sectional view of the configuration of the present invention, in which the jaw 1 is fastened to the soft jaw 3 with a socket bolt 2 and a key 5 is interposed between the operating shaft 8 and the soft jaw 3. To the socket bolt (4), and the operating shaft (8) rotating in the bearing race (7) around the hinge (6) has an eccentricity and the end of the operating shaft (8) has a cylinder with a built-in cylinder (17). In the yoke 9 extending radially from the center of the draw bar 16, the operating shaft 8 can rotate about the hinge 6 according to the forward and backward movement of the draw bar 16. Insert the eccentric sliding ball 11 so as to sandwich the vandal key 10 between the eccentric sliding ball 11 and the working shaft (8), the draw bar (16) is screwed to the body 12 bushing ( 13) It is characterized in that the reciprocating movement within.

이러한 구성을 한 본 발명으로 테이퍼 형상의 공작물(14)을 클램핑하는 작동을 설명하면, 드로우바아(16)가 이점 쇄선의 상태 즉, 죠오(1)가 벌어졌을때 공작물(14)을 죠오(1)사이에 끼우고 드로우바아(16)를 점진적으로 후진시키면 요우크(9)에 삽입된 편심슬라이딩볼(11)이 회전됨과 동시에 작동축(8)을 시계방향으로 들어 올려 죠오(1)의 척킹(Chcuking)력이 시계방향으로 작용하게 되는 것이다.In the present invention having such a configuration, the taper-shaped work 14 is clamped, and the draw bar 16 has the advantage of the dashed line, that is, the jaw 1 is opened when the jaw 1 is opened. If the draw bar 16 is gradually retracted, the eccentric sliding ball 11 inserted in the yoke 9 is rotated and the operating shaft 8 is lifted clockwise to chuck the jaw 1. Chcuking force acts clockwise.

절삭공정이 완료되면 드로우바아(16)를 전진시키면 상기의 클램핑 상태가 해제된다.When the cutting process is completed, when the draw bar 16 is advanced, the clamping state is released.

이상과 같은 본 발명의 공작물에 대해서 척킹(Chucking)력이 효율적으로 작용함으로서 작업의 안전성에 크게 기여하는 바가 있으며, 또한 절삭공구의 절삭저항이 가소함으로 정밀도 유지에도 지대한 효과가 있다.As the chucking force acts efficiently on the workpiece of the present invention as described above, it greatly contributes to the safety of the work, and the cutting resistance of the cutting tool is plasticized, which is also effective in maintaining precision.

Claims (1)

소프트죠오(3)에 죠오(1)를 소켓볼트(2)로 체결하고 작동축(8)과 소프트죠오(3)사이에는 키이(5)를 개재시켜 소켓볼즈(4)로 체결하며, 힌지(6)를 중심으로 베어링 레이스(7)에서 회전하는 작동축(8)은 편심이 형성되고 작동축(8)의 말단에는 스프링을 내장한 실린더(17)가 개재되며 드로우바아(16)의 중심에서 방사형으로 뻗은 요우크(9)의 내부에는 드로우바아(16)의 전후진 운동에 따라서 힌지(6)를 중심으로 작동축(8)이 회전할 수 있도록 편심 슬라이딩볼(11)을 삽입하여 편심슬라이딩볼(11)과 작동축(8)사이에는 반달케이(10)를 개재시켜으며, 드로우바아(16)는 몸체(12)에 나사체결된 부쉬(13)내에서 왕복 운동할 수 있도록 한 것을 특징으로 한 테이퍼 공작물용 클램핑 척.The jaw (1) is fastened to the soft jaw (3) with the socket bolt (2), and between the working shaft (8) and the soft jaw (3) with the socket ball (4) via a key (5), the hinge ( 6) The operating shaft 8 rotating in the bearing race 7 about the center is formed eccentrically, and the end of the operating shaft 8 is interposed with a cylinder (17) with a spring built in the center of the draw bar (16) Eccentric sliding by inserting an eccentric sliding ball (11) in the radially extending yoke (9) to allow the operating shaft (8) to rotate about the hinge (6) in accordance with the forward and backward movement of the draw bar (16) The vandal cage 10 is interposed between the ball 11 and the operating shaft 8, and the draw bar 16 is capable of reciprocating in the bush 13 screwed to the body 12. Clamping chuck for tapered workpieces.
KR1019860011531A 1986-12-30 1986-12-30 Clamping chuck for the tapered working material KR900000618B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019860011531A KR900000618B1 (en) 1986-12-30 1986-12-30 Clamping chuck for the tapered working material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019860011531A KR900000618B1 (en) 1986-12-30 1986-12-30 Clamping chuck for the tapered working material

Publications (2)

Publication Number Publication Date
KR880007171A KR880007171A (en) 1988-08-26
KR900000618B1 true KR900000618B1 (en) 1990-02-01

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Application Number Title Priority Date Filing Date
KR1019860011531A KR900000618B1 (en) 1986-12-30 1986-12-30 Clamping chuck for the tapered working material

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Publication number Publication date
KR880007171A (en) 1988-08-26

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