KR101188832B1 - Lapping apparatus for ballscrew nut - Google Patents

Lapping apparatus for ballscrew nut Download PDF

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Publication number
KR101188832B1
KR101188832B1 KR1020120029256A KR20120029256A KR101188832B1 KR 101188832 B1 KR101188832 B1 KR 101188832B1 KR 1020120029256 A KR1020120029256 A KR 1020120029256A KR 20120029256 A KR20120029256 A KR 20120029256A KR 101188832 B1 KR101188832 B1 KR 101188832B1
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KR
South Korea
Prior art keywords
lapping
ball screw
jig
screw nut
fastener
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KR1020120029256A
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Korean (ko)
Inventor
이재홍
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(주)한산리니어시스템
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Priority to KR1020120029256A priority Critical patent/KR101188832B1/en
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Publication of KR101188832B1 publication Critical patent/KR101188832B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G1/00—Thread cutting; Automatic machines specially designed therefor
    • B23G1/36—Thread cutting; Automatic machines specially designed therefor by grinding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/02—Lapping machines or devices; Accessories designed for working surfaces of revolution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G2200/00—Details of threading tools
    • B23G2200/08—Threading tools with adjustable elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G2200/00—Details of threading tools
    • B23G2200/48—Spiral grooves, i.e. spiral flutes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G2210/00—Details of threads produced
    • B23G2210/04—Internal threads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G2210/00—Details of threads produced
    • B23G2210/21—Threads in nuts

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Transmission Devices (AREA)

Abstract

PURPOSE: A lapping machine for ball screw nuts is provided to precisely grind a spiral groove of a ball screw nut while a lapping jig is rotated by a rotary motor. CONSTITUTION: A lapping machine for ball screw nuts comprises a pair of lapping jigs, a rotary motor, a clamp(40), and a rotation control unit. A fixing cap is fitted into both ends of the lapping jigs. The lapping jig comprises projected portions(10c) and lapping projections(10a). The projected portions are formed at constant intervals, and a screw groove(10d) is formed on an inclined outer surface of the projected portion. The lapping projections are correspondently formed to a spiral groove of the ball screw nut. The rotary motor is connected to one end of the lapping jig. The clamp is inserted into the lapping jigs, and the threads of the clamp are gradually bigger toward one side. The clamp is engaged with thread grooves. The rotation control unit rotates the clamp in one direction.

Description

볼스크류너트용 래핑장치{lapping apparatus for ballscrew nut} Lapping apparatus for ballscrew nut

본 발명은 볼스크류너트 내경의 나선홈을 래핑(lapping) 가공하는 볼스크류너트용 래핑장치에 관한 것이다.
The present invention relates to a lapping apparatus for a ball screw nut for lapping a spiral groove of an inner diameter of a ball screw nut.

본 발명은 볼스크류축 상에서 이동하는 볼스크류너트를 래핑(lapping) 가공하기 위한 볼스크류너트용 래핑장치에 관한 것으로, 더욱 상세하게는 상기 볼스크류너트 내주연부의 나선홈을 래핑돌기가 형성된 래핑지그를 사용하여 간단 용이하게 연마?연모 가공을 할 수 있는 볼스크류너트용 래핑장치에 관한 것이다. The present invention relates to a lapping apparatus for a ball screw nut for lapping a ball screw nut moving on a ball screw shaft, and more particularly, a wrapping jig having a spiral groove formed in a spiral groove of an inner circumference of the ball screw nut. The present invention relates to a lapping apparatus for a ball screw nut, which can be easily polished and abraded using.

일반적으로 볼스크류(Ball screw) 장치는 나사인 볼스크류축(Screw)과 볼스크류너트(Nut)가 볼(Ball)을 사이에 두고 작동하는 기계장치로 회전 운동을 직선 운동으로 또는 직선 운동을 회전 운동으로 전환하는 것으로서, 작은 토크를 증폭하여 큰 추력을 제공하는 외에도 직선 방향을 따른 정확한 위치 결정을 가능하게 하는 것이다. In general, a ball screw device is a mechanism in which a ball screw shaft (Screw) and a ball screw nut (Nut) operate between a ball and a linear motion or a linear motion. By converting to motion, in addition to providing a large thrust by amplifying a small torque, it enables accurate positioning along a straight line direction.

이러한 성능 때문에, 상기 볼스크류(Ball screw) 장치는 기계 공구, 반도체 관련 장치, 항공기의 기계적 제어장치 및 산업용 로봇 등 기타 정밀을 요하는 기계 및 장치 류의 이송기구(Transport mechanism)로 광범위하게 사용되고 있다.Because of this performance, the ball screw device has been widely used as a transport mechanism for machine tools, semiconductor-related devices, mechanical control devices of aircrafts, industrial robots, and other machines and devices requiring high precision. .

상기 볼스크류 장치는 볼스크류너트(nut)의 내주연부와 볼스크류축(Screw)의 외주연부 각각에 반원형 단면의 나선홈이 대향되어 형성되며, 이러한 반원형 단면의 나선홈이 서로 결합되어 원형으로 형성됨으로써 나선형 통로를 구성하게 된다. 그리고 상기 볼스크류너트와 볼스크류축의 결합으로 형성되는 나선형 통로 내에 볼(Ball)이 끼워지게 되고, 상기 볼을 매개체로 하여 상기 볼스크류너트 내부에서 상기 볼스크류축이 원활하게 회전함으로써 전진 또는 후퇴하게 되어 소정의 이송 동작을 행하게 되는 기계부품이다.The ball screw device is formed by opposing a spiral groove of a semi-circular cross section at each of the inner circumferential edge of the ball screw nut and the outer circumferential edge of the ball screw shaft. This constitutes a spiral passage. The ball is inserted into the spiral passage formed by the combination of the ball screw nut and the ball screw shaft, and the ball screw shaft rotates smoothly inside the ball screw nut using the ball as a medium to move forward or backward. It is a mechanical part which performs a predetermined conveyance operation.

또한, 상기 볼스크류너트에는 상기 나선형 통로에 구비되는 볼이 리턴(Return)되어 나선형 통로 내에 계속적으로 공급하도록 안내하는 튜브(Tube)가 장착되어 상기 샤프트의 회전이 더욱더 원활해질 수 있게 된다.In addition, the ball screw nut is equipped with a tube for guiding the ball provided in the helical passage to return continuously in the helical passage so that the rotation of the shaft can be made smoother.

상기 볼스크류너트의 나선형 홈의 형성과정에는, 나선형 홈을 보호하고 볼스크류너트의 내마모성 및 내피로성을 향상시켜 전체적인 강도를 강화하기 위한 열처리과정을 거치게 되는데 특히, 상기 볼스크류너트의 열처리과정은 크롬몰디브덴강 침탄방법을 통해 표면에 소입시킴으로써 특정표면부위만을 열처리할 때 사용하는 침탄열처리방법을 사용하게 된다.In the process of forming the spiral groove of the ball screw nut, a heat treatment process for protecting the spiral groove and improving the wear resistance and fatigue resistance of the ball screw nut to enhance the overall strength, in particular, the heat treatment process of the ball screw nut The carburizing heat treatment method used to heat-treat only a specific surface part by hardening the surface through the molybdenum steel carburizing method is used.

이때, 상기와 같은 열처리과정을 거친 볼스크류너트는 금속재의 표면조직에 불균일한 부분이 형성되거나, 상기 볼스크류너트의 내경에 형성되는 나선형 홈의 불균일성 또는 기타 이물질 등이 쌓이게 되고, 이로 인한 각종 소음유발의 문제점이 발생하게 된다. At this time, a non-uniform portion is formed in the surface structure of the metal material, or a non-uniformity of the spiral groove formed in the inner diameter of the ball screw nut, or other foreign matters are accumulated in the ball screw nut that has undergone the heat treatment as described above. The problem of triggering occurs.

본 발명은 상술한 종래 볼스크류장치에 사용되는 볼스크류너트의 나선형 홈이 충분히 매끄러운 표면으로 가공되지 않을 경우, 볼스크류축의 나선형 홈과 상기 볼스크류너트의 나선형 홈 사이에서 운동하는 볼(ball) 사이에 표면 박리현상이 발생하여 나선형 홈이 급격히 마모되어 볼스크류너트 및 볼스크류축의 수명이 단축되는 문제점이 있으며, 불규칙한 표면에 의해 볼스크류너트와 볼 및 볼스크류너트의 마찰이 증가하여 소음을 유발하는 문제점을 해결하는데 그 목적이 있다.
According to the present invention, when the spiral groove of the ball screw nut used in the above-described conventional ball screw device is not processed to a sufficiently smooth surface, the ball moves between the spiral groove of the ball screw shaft and the spiral groove of the ball screw nut. Due to the surface peeling phenomenon, the spiral groove is rapidly worn out and the life of the ball screw nut and the ball screw shaft is shortened.The irregular surface causes the friction between the ball screw nut and the ball and the ball screw nut to increase noise. The purpose is to solve the problem.

따라서 본 발명은 상기와 같은 문제점을 해결하고자 발명된 것으로, 내주연부에 나선홈(1a)이 형성된 볼스크류너트(1) 내측에 상하 또는 좌우 방향으로 마주보게 배치되도록 삽입되어 양단부에 고정캡(cap,20)이 끼워지고, 내주연부에는 나사홈(10d)이형성된 돌출부(10c)가 일정간격으로 이격 형성되며, 외주연부에는 상기 볼스크류너트(1)의 나선홈(1a)에 대응하는 래핑돌기(10a)가 형성되는 한 쌍의 래핑지그(10); 상기 래핑지그(10)의 일단부에 체결되는 회전모터(31); 상기 한 쌍의 래핑지그(10) 내측에 삽입되며, 외주연부에는 상기 나사홈(10d)에 대응하여 일측으로 갈수록 반경이 커지는 나사산(41)이 형성되는 조임쇠(40); 및 상기 래핑지그(10) 및 조임쇠(40) 일측에 형성되어 상기 조임쇠(40)가 한 방향으로 회전가능하도록 하는 회전제어수단(50);을 포함하는 것을 특징으로 하는 볼스크류너트용 래핑장치를 제공함으로써, 볼스크류너트 내주연부에 형성된 나선홈이 충분히 균일하게 연마되지 않아 초래할 수 있는 문제점 및 이로 인한 소음유발의 문제점을 해결한다.Therefore, the present invention has been invented to solve the above problems, is inserted into the ball screw nut (1) formed in the inner circumferential periphery is arranged so as to face up and down or in the left and right direction fixed cap (cap) 20 is fitted, the inner periphery of the protrusion (10c) formed with a screw groove (10d) is formed at regular intervals, the outer periphery of the wrapping projection corresponding to the spiral groove (1a) of the ball screw nut (1) A pair of wrapping jig 10 in which 10a is formed; Rotating motor 31 is fastened to one end of the wrapping jig 10; Fasteners 40 are inserted into the pair of lapping jig 10, the outer periphery has a thread 41 is formed to increase the radius toward one side corresponding to the screw groove (10d); And a rotation control means (50) formed at one side of the wrapping jig (10) and the fastener (40) to allow the fastener (40) to rotate in one direction. By providing the above, the problem that the spiral groove formed in the inner peripheral portion of the ball screw nut is not polished sufficiently uniformly may be caused and the problem of noise induced thereby.

본 발명에 따른 볼스크류너트용 래핑장치는 다음과 같은 효과를 갖는다.Lapping apparatus for a ball screw nut according to the present invention has the following effects.

본 발명은 볼스크류너트 내측에 삽입되는 래핑지그가 회전모터의 구동에 의해 회전하면서 외주연부에 형성된 래핑돌기가 볼스크류너트의 나선홈을 정확하고 깔끔하게 연삭, 연마의 가공처리를 할 수 있는 현저한 효과를 갖는다.According to the present invention, the wrapping jig inserted into the ball screw nut is rotated by the driving of the rotating motor, and the wrapping protrusion formed on the outer periphery of the ball screw nut can accurately and neatly grind and grind the spiral groove of the ball screw nut. Has

본 발명의 래핑지그(jig)에 형성된 유동홈 및 내부에 구비되는 조임쇠에 의해 래핑지그의 반경 조절이 가능하여, 직경 및 강도가 다양한 볼스크류너트를 본 발명에 따른 래핑지그 하나로 간단 용이하게 래핑(lapping) 가공할 수 있는 뛰어난 상승적 효과를 갖게 된다.
The radius of the wrapping jig can be adjusted by the flow groove formed in the wrapping jig of the present invention and the fastener provided therein, so that the ball screw nut having various diameters and strengths can be easily wrapped with one wrapping jig according to the present invention. It has an excellent synergistic effect for lapping.

도 1은 본 발명에 따른 볼스크류너트용 래핑장치의 전체 모식도
도 2 및 도 3은 본 발명에 따른 볼스크류너트용 래핑장치의 래핑지그 분해도 및 단면도
도 4는 본 발명에 따른 볼스크류너트용 래핑장치에 구비된 회전제어장치의 모식도1 is an overall schematic view of a wrapping device for a ball screw nut according to the present invention
2 and 3 is an exploded view and cross-sectional view of the lapping jig of the lapping apparatus for a ball screw nut according to the present invention
Figure 4 is a schematic diagram of the rotation control device provided in the wrapping device for a ball screw nut according to the present invention

본 발명은 볼스크류축 상에서 이동하는 볼스크류너트의 내경을 래핑(lapping) 가공하기 위한 볼스크류너트용 래핑장치에 관한 것으로, 더욱 상세하게는 상기 볼스크류너트의 내주연부에 형성된 나선홈을 래핑돌기가 형성된 래핑지그의 사용하여 간단 용이하게 연삭?연마 가공을 할 수 있는 볼스크류너트용 래핑장치에 관한 것이다. The present invention relates to a lapping apparatus for a ball screw nut for lapping an inner diameter of a ball screw nut moving on a ball screw shaft, and more particularly, to a spiral groove formed on an inner circumference of the ball screw nut. The present invention relates to a lapping apparatus for a ball screw nut, which can be easily and easily ground and polished by using a lapping jig having a mold formed thereon.

이하, 첨부된 도면을 참조하여 본 발명에 따른 볼스크류너트용 래핑장치에 대해 자세히 설명한다. Hereinafter, a wrapping apparatus for a ball screw nut according to the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 볼스크류너트용 래핑장치의 전체 모식도이고, 도 2 및 도 3은 본 발명의 래핑지그 분해도 및 단면도이며, 도 4는 본 발명에 따른 볼스크류너트용 래핑장치에 구비된 회전제어장치의 모식도이다.1 is an overall schematic view of a lapping apparatus for a ball screw nut according to the present invention, Figures 2 and 3 are exploded views and cross-sectional view of the lapping jig of the present invention, Figure 4 is provided with a lapping apparatus for a ball screw nut according to the present invention It is a schematic diagram of a rotation control apparatus.

먼저, 본 발명에 따른 볼스크류너트용 래핑장치(lapping apparatus)는, 내주연부에 나선홈(1a)이 형성된 볼스크류너트(1) 내측에 상기 볼스크류너트(1)의 내경에 대응하는 반원통 형상의 래핑지그(10) 한 쌍이 상하 또는 좌우방향으로 배치되어 삽입된다.First, a wrapping apparatus for a ball screw nut according to the present invention includes a semi-cylinder corresponding to the inner diameter of the ball screw nut 1 inside the ball screw nut 1 having the spiral groove 1a formed at the inner circumferential edge thereof. A pair of wrapping jig 10 of the shape is inserted and inserted in the vertical or horizontal direction.

상기 볼스크류너트(1)의 내측에 삽입하는 한 쌍의 상기 래핑지그(10)의 외주연부에는 상기 볼스크류너트(1)의 내경에 형성된 나선홈(1a)에 대응하는 래핑돌기(10a)가 돌출 형성되며, 경사진 외면에 나사홈(10d)이 형성된 돌출부(10c)가 내주연부에 일정간격으로 이격되어 형성된다.A wrapping protrusion 10a corresponding to the spiral groove 1a formed in the inner diameter of the ball screw nut 1 is formed at an outer circumferential portion of the pair of the wrapping jig 10 inserted into the ball screw nut 1. Protrudingly formed, the protrusion 10c is formed with a screw groove (10d) on the inclined outer surface is formed spaced apart at regular intervals on the inner peripheral edge.

상기 볼스크류너트(1)에 삽입되는 한 쌍의 상기 래핑지그(10)의 양단부는 한 쌍의 상기 래핑지그(10)를 상호 밀착 고정하여 원통 형상을 이루도록 하는 고정캡(cap,20)이 억지끼움되고, 상기 래핑지그(10)의 타단부에 끼워진 고정캡(20)의 중심에는 요홈(미도시)이 형성되어 여기에 선단부가 원추 형성으로 뾰족하게 제작된 고정축(32)에 밀착 고정된다.Both ends of the pair of the wrapping jig 10 inserted into the ball screw nut 1 are fixed to the cap (20) to form a cylindrical shape by tightly fixing the pair of the wrapping jig 10 to each other A groove is formed in the center of the fixing cap 20 fitted to the other end of the wrapping jig 10 so that the tip is fixed to the fixed shaft 32 sharply manufactured by forming a cone. .

그리고 상기 고정캡(20)이 끼워진 상기 래핑지그(10)의 일단부에는 선반과 같은 작업대 위에서 외부전원에 의해 구동되는 회전모터(31)에 연결되어 상기 회전모터(31)의 구동에 의해 상기 래핑지그(10)가 회전하게 되며, 상기 고정축에 의해 상기 회전모터(31)의 회전구동에 따라 상기 래핑지그(10)가 상하 좌우로 움직이지 않고 수평을 유지하면서 회전하게 된다.One end of the wrapping jig 10 into which the fixing cap 20 is fitted is connected to a rotary motor 31 driven by an external power source on a work bench such as a shelf, and the wrapping cap is driven by driving the rotary motor 31. The jig 10 is rotated, and the wrapping jig 10 is rotated while maintaining the horizontal state without moving up, down, left, and right according to the rotational drive of the rotary motor 31 by the fixed shaft.

즉, 상기 회전모터(31)와 고정축(32)에 의해 상기 래핑지그(10)가 고정되어 제자리에서 회전하게 된다.That is, the wrapping jig 10 is fixed by the rotation motor 31 and the fixed shaft 32 to rotate in place.

그리고 한 쌍의 상기 래핑지그(10)에는 길이방향의 유동홈(10b)이 적어도 하나 이상 형성되어, 보통 수 ㎛ ~ ㎚ 단위로 반경 차를 갖는 다양한 상기 볼스크류너트(1)의 반경에 대응하여 한 쌍의 상기 래핑지그(10)의 원통 반경을 용이하게 변 경할 수 있다.In addition, at least one or more flow grooves 10b in the longitudinal direction are formed in the pair of the lapping jig 10, and generally correspond to a radius of the various ball screw nuts 1 having a radius difference in units of several μm to nm. A cylindrical radius of the pair of the lapping jig 10 can be easily changed.

한 쌍의 상기 래핑지그(10)의 내측에는 회전가능한 조임쇠(40)가 삽입되는데, 상기 조임쇠(40)의 외주연부에는 상기 래핑지그(10)의 경사진 돌출부(10c)의 나사홈(10d)에 대응하고, 일측으로 갈수록 반경이 커지는 나사산(41)이 일정간격 이격되어 형성된다.A rotatable fastener 40 is inserted into the pair of the lapping jig 10, and a screw groove 10d of the inclined protrusion 10c of the lapping jig 10 is inserted into the outer circumferential portion of the fastening 40. Corresponding to the one side, the threaded thread 41, the radius of which becomes larger toward one side is formed at a predetermined interval apart.

즉, 상기 조임쇠(40)의 회전에 의해 상기 나사산(41)이 일방향으로 경사진 돌출부(10c)의 나사홈(10d)에 전후진하게 되고, 상기 나사산(41)의 전후진에 의해 원통을 이루는 한 쌍의 래핑지그(10)가 상호 벌어지거나 밀착하면서 원통의 래핑지그(10) 전체 반경을 조절하게 된다.That is, as long as the thread 41 moves forward and backward to the thread groove 10d of the protrusion 10c inclined in one direction due to the rotation of the fastener 40, and forms a cylinder by the forward and backward movement of the thread 41. The pair of lapping jig 10 is opened or close to each other to adjust the overall radius of the lapping jig 10 of the cylinder.

따라서 본 발명의 볼스크류너트용 래핑장치는 상기 래핑지그(10)로 반경이 다양한 볼스크류너트(10)를 래핑(lapping) 가공할 수 있는 현저한 효과를 갖는다.Accordingly, the lapping apparatus for the ball screw nut of the present invention has a remarkable effect of lapping the ball screw nut 10 having various radii with the lapping jig 10.

또한, 상기 래핑지그(10) 및 조임쇠(40) 후측부에는 상기 조임쇠(40)가 상기 래핑지그(10) 내부에서 정방향으로만 회전하여 상기 래핑지그(10)가 완전히 볼스크류너트(1) 내경에 밀착하게 하는 회전제어수단(50);이 형성되는데, 상기 회전제어수단(50)은 상기 래핑지그(10)의 일측에 스프링(51b)에 연결 고정되어 탄성복원력을 갖는 걸림편(51c); 상기 조임쇠(40)의 일단부에 끼워지고, 외주연부에는 상기 걸림편(51c)을 일 방향으로 밀어내면서 회전하는 회전날개(51a)가 구비되어, 상기 회전날개(51a)가 역방향으로 회전시 회전날개(51a)의 배면이 상기 걸림편(51c)에 걸려 상기 조임쇠(40)가 정방향으로만 회전되도록 하는 조임스크류(51);를 포함하여 이루어진다.
In addition, the lattice jig 10 and the fastener 40 is rotated in the forward direction only in the lattice jig 10 inside the lattice jig 10, the lapping jig 10 is completely ball screw nut (1) inner diameter Rotating control means (50) to be in close contact with the rotation control means 50 is connected to the spring 51b on one side of the wrapping jig 10 is fixed to the engaging piece having an elastic restoring force; It is fitted to one end of the fastener 40, the outer peripheral portion is provided with a rotary blade 51a for rotating while pushing the locking piece 51c in one direction, the rotary blade 51a rotates when rotated in the reverse direction The back surface of the wing (51a) is caught by the locking piece (51c) fastening screw (51) for rotating the fastener 40 only in the forward direction; is made.

다음은 상기와 같이 구성된 본 발명에 따른 볼스크류너트(1)용 래핑장치의 바람직한 실시예를 설명한다.The following describes a preferred embodiment of the wrapping device for a ball screw nut 1 according to the present invention configured as described above.

먼저, 선반과 같은 작업대 위에 구비된 회전모터(31)에 한 쌍의 래핑지그(10)를 연결 고정한다. 상기 회전모터(31)와 연결된 래핑지그(10)의 반대편 타단부에 가공할 볼스크류너트(1)를 끼워 조금 밀어넣는다.First, the pair of lapping jig 10 is fixed to the rotary motor 31 provided on a workbench such as a shelf. The ball screw nut 1 to be processed is inserted into the other end of the wrapping jig 10 connected to the rotary motor 31 and pushed slightly.

상기 볼스크류너트(1)가 래핑지그(10)의 외주연부에 끼워진 후, 상기 래핑지그(10)의 내측으로 조임쇠(40)를 삽입하고, 한 쌍의 상기 래핑돌기(10)가 볼스크류너트(1) 내측에서 반경이 최대한 넓어져 상기 래핑지그(10)의 래핑돌기(10a)가 상기 볼스크류너트(1)의 나선홈(1a)에 완전히 밀착될 때까지 상기 조임쇠(40)를 정방향으로 회전시킨다.After the ball screw nut 1 is fitted to the outer periphery of the lapping jig 10, the fastener 40 is inserted into the lapping jig 10, and the pair of the lapping protrusions 10 is a ball screw nut. (1) The fastener 40 is moved in the forward direction until the radius of the inner side of the lapping jig 10 is fully in contact with the spiral groove 1a of the ball screw nut 1. Rotate

상기 조임쇠(40)에 의해 래핑지그(10)의 래핑돌기(10a)가 볼스크류너트(1)의 내경에 형성된 나선홈(1a)에 완전히 밀착되면, 상기 래핑지그(10)의 타단부에 고정캡(20)을 씌어 폐쇄한 후, 선반 작업대에 구비된 고정축(32)이 래핑지그(10)의 타단부에 밀착시켜 상기 래핑지그(10)가 움직이지 않고 제자리에서 회전하도록 한다.When the wrapping projection 10a of the wrapping jig 10 is completely in contact with the spiral groove 1a formed at the inner diameter of the ball screw nut 1 by the fastener 40, the other end of the wrapping jig 10 is fixed thereto. After capping and closing the cap 20, the fixed shaft 32 provided on the shelf workbench closely contacts the other end of the wrapping jig 10 so that the wrapping jig 10 rotates in place without moving.

그리고 상기 회전모터(31)에 전원을 인가하게 상기 래핑지그(10)가 제자리에서 회전하게 되고, 상기 래핑지그(10)의 회전에 따라 상기 볼스크류너트(1)가 상기 래핑지그(10) 상에서 이동하게 되며, 볼스크류너트(1)가 래핑지그(10) 상에서 이동하게 되면 상기 볼스크류너트(1) 내경의 나선홈(1a)이 래핑돌기(10a)에 의해 연삭ㆍ연마와 같은 래핑(lapping) 가공이 이루어진다. The lapping jig 10 rotates in place to apply power to the rotary motor 31, and the ball screw nut 1 is rotated on the lapping jig 10 according to the rotation of the lapping jig 10. When the ball screw nut 1 moves on the lapping jig 10, the spiral groove 1a of the inner diameter of the ball screw nut 1 is lapping such as grinding and polishing by the lapping protrusion 10a. ) Processing is performed.

한편, 상기 회전모터(32)가 역방향으로 회전하게 되면, 상기 래핑지그(10)를 단단히 조여주었던 상기 조임쇠(40)가 풀려 상기 래핑지그(10) 내부에서 움직여 래핑지그(10)에 부딪히거나 이탈하는 문제점이 발생할 수 있게 되는데, 이에 본 발명의 래핑장치에는 회전제어수단(50)을 구비하여 상기와 같은 문제점을 원천 차단하게 된다.On the other hand, when the rotary motor 32 is rotated in the reverse direction, the fastener 40 that was tightly tightening the wrapping jig 10 is released to move within the wrapping jig 10 to hit the wrapping jig 10 or The problem of departure can occur, and thus, the lapping apparatus of the present invention includes a rotation control means 50 to block the above problems.

즉, 도 4에 도시된 바와 같이, 상기 회전모터(31)의 역방향 회전시, 상기 조임쇠(40)에 억지끼움된 조임스크류(51)의 회전날개(51a) 배면이 상기 래핑지그(10) 일측에 스프링 연결 고정된 고정편(51c)에 걸려 상기 조임스크류(51) 및 조임쇠(40)가 역회전 되지 않도록 하는 현저한 효과를 갖는다. That is, as shown in Figure 4, during the reverse rotation of the rotary motor 31, the back surface of the rotary blade 51a of the tightening screw 51 forcibly fitted to the fastener 40 is one side of the wrapping jig 10 The fastening screw 51 and the fastener 40 are caught in a fixed piece (51c) fixed to the spring connection to have a remarkable effect of preventing the reverse rotation.

따라서 본 발명의 래핑장치는 상기 회전모터(31)의 역방향 회전시에도 래핑지그(10) 내부의 상기 조임쇠(40)가 상기 회전제어수단(50)에 의해 역방향으로 회전되지 않고 계속해서 상기 래핑지그(10)가 볼스크류너트(1)의 내경에 밀착되도록 가압하게 된다.Therefore, in the lapping apparatus of the present invention, the fastener 40 inside the lapping jig 10 does not rotate in the reverse direction by the rotation control means 50 even when the rotary motor 31 rotates in the reverse direction. 10 is pressurized to be in close contact with the inner diameter of the ball screw nut (1).

이상, 본 발명의 특정 실시예에 대하여 상술하였다. 그러나, 본 발명의 사상 및 범위는 이러한 특정 실시예에 한정되는 것이 아니라, 본 발명의 요지를 변경하지 않는 범위 내에서 다양하게 수정 및 변형이 가능하다는 것을 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자라면 이해할 것이다.The specific embodiments of the present invention have been described above. It is to be understood, however, that the scope and spirit of the present invention is not limited to these specific embodiments, and that various modifications and changes may be made without departing from the spirit of the present invention. If you have, you will understand.

따라서, 이상에서 기술한 실시예들은 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자에게 발명의 범주를 완전하게 알려주기 위해 제공되는 것이므로, 모든 면에서 예시적인 것이며 한정적이 아닌 것으로 이해해야만 하며, 본 발명은 청구항의 범주에 의해 정의될 뿐이다.
Therefore, it should be understood that the above-described embodiments are provided so that those skilled in the art can fully understand the scope of the present invention. Therefore, it should be understood that the embodiments are to be considered in all respects as illustrative and not restrictive, The invention is only defined by the scope of the claims.

1 : 볼스크류너트 1a : 나선홈
10 : 래핑지그(lapping jig) 10a : 래핑돌기
10b : 유동홈 10c : 돌출부
10d : 나사홈 20 : 고정캡
31 : 회전모터 32 : 고정축
40 : 조임쇠 41 : 나사산
50 : 회전제어수단 51 : 조임스크류
51a : 회전날개 51b : 스프링
51c : 고정편1: Ball screw nut 1a: Spiral groove
10: lapping jig (lapping jig) 10a: lapping protrusion
10b: flow groove 10c: protrusion
10d: screw groove 20: fixing cap
31: rotating motor 32: fixed shaft
40: fastener 41: thread
50: rotation control means 51: tightening screw
51a: rotary blade 51b: spring
51c: fixed piece

Claims (3)

내주연부에 나선홈(1a)이 형성된 볼스크류너트(1) 내측에 상하 또는 좌우 방향으로 마주보게 배치되도록 삽입되어 양단부에 고정캡(cap,20)이 끼워지고, 경사진 외면에 나사홈(10d)이 형성된 돌출부(10c)가 내주연부에 일정간격 이격 형성되며, 외주연부에는 상기 볼스크류너트(1)의 나선홈(1a)에 대응하는 래핑돌기(10a)가 형성되는 한 쌍의 래핑지그(10);
상기 래핑지그(10)의 일단부에 체결되는 회전모터(31);
상기 한 쌍의 래핑지그(10) 내측에 삽입되며, 상기 돌출부(10c)에 대응하여 일측으로 갈수록 반경이 커지는 나사산(41)이 형성되어, 상기 나사홈(10d)에 나사산(41)이 물려 회전하는 조임쇠(40); 및
상기 래핑지그(10) 및 조임쇠(40) 일측에 형성되어 상기 조임쇠(40)가 한 방향으로 회전가능하도록 하는 회전제어수단(50);을 포함하는 것을 특징으로 하는 볼스크류너트용 래핑장치.
Inserted to face up and down or left and right in the ball screw nut (1) formed with a spiral groove (1a) formed on the inner periphery, the fixing cap (cap, 20) is fitted to both ends, screw groove (10d) on the inclined outer surface A pair of lapping jigs having a protrusion 10c formed at the inner periphery and having a predetermined distance therebetween, and having a lapping protrusion 10a corresponding to the spiral groove 1a of the ball screw nut 1 formed at the outer periphery. 10);
Rotating motor 31 is fastened to one end of the wrapping jig 10;
The thread 41 is inserted into the pair of the lapping jig 10, and the thread 41 is formed to have a larger radius toward one side corresponding to the protrusion 10c, and the thread 41 is rotated by the screw groove 10d. Fastener 40 to be made; And
And a rotation control means (50) formed at one side of the wrapping jig (10) and the fastener (40) to allow the fastener (40) to rotate in one direction.
제1항에 있어서,
상기 회전제어수단(50)은,
상기 래핑지그(10)의 일측에 스프링(51b)에 연결 고정되어 탄성복원력을 갖는 걸림편(51c);
상기 조임쇠(40)의 일단부에 끼워지고, 외주연부에는 상기 걸림편(51c)을 일 방향으로 밀어내면서 회전하는 회전날개(51a)가 구비되고, 상기 회전날개(51a)가 역방향으로 회전시 회전날개(51a)의 배면이 상기 걸림편(51c)에 걸려 상기 조임쇠(40)가 한 방향으로만 회전되도록 하는 조임스크류(51);를 포함하는 것을 특징으로 하는 볼스크류너트용 래핑장치.
The method of claim 1,
The rotation control means 50,
A locking piece 51c connected to and fixed to a spring 51b on one side of the lapping jig 10 and having an elastic restoring force;
It is fitted to one end of the fastener 40, the outer peripheral portion is provided with a rotary blade (51a) for rotating while pushing the locking piece (51c) in one direction, the rotary blade (51a) when rotating in the reverse direction And a fastening screw (51) for fastening the fastener (40) only in one direction by the back surface of the wing (51a) being caught by the catching piece (51c).
제1항 또는 제2항에 있어서,
상기 래핑지그(10)에는 길이방향의 유동홈(10b)이 적어도 하나 형성되는 것을 특징으로 하는 볼스크류너트용 래핑장치. The method according to claim 1 or 2,
Lapping apparatus for the ball screw nut, characterized in that at least one longitudinal groove (10b) is formed in the lapping jig (10).
KR1020120029256A 2012-03-22 2012-03-22 Lapping apparatus for ballscrew nut KR101188832B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107283004A (en) * 2017-07-05 2017-10-24 朱礼峰 Feed screw nut grinding technics and its milling apparatus
CN108500755A (en) * 2018-06-11 2018-09-07 济宁市微科特机械制造有限责任公司 A kind of tooling, processing method for processing the nut of ball-screw
CN110405583A (en) * 2019-07-05 2019-11-05 张美华 It is a kind of for processing the grinding device and polishing process of pump helical blade
TWI726333B (en) * 2019-02-08 2021-05-01 日商山葉發動機股份有限公司 Grinding jig, grinding device and grinding method

Citations (3)

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Publication number Priority date Publication date Assignee Title
JP2000198063A (en) 1999-01-01 2000-07-18 Ntn Corp Method and device for lapping thread groove of nut
JP2002292555A (en) 2001-01-25 2002-10-08 Senjo Seiki Kk Lapping tool
WO2011163542A1 (en) 2010-06-25 2011-12-29 Ksw Technology Inc. Tool and related methods and apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000198063A (en) 1999-01-01 2000-07-18 Ntn Corp Method and device for lapping thread groove of nut
JP2002292555A (en) 2001-01-25 2002-10-08 Senjo Seiki Kk Lapping tool
WO2011163542A1 (en) 2010-06-25 2011-12-29 Ksw Technology Inc. Tool and related methods and apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107283004A (en) * 2017-07-05 2017-10-24 朱礼峰 Feed screw nut grinding technics and its milling apparatus
CN107283004B (en) * 2017-07-05 2023-12-26 朱礼峰 Screw nut grinding process
CN108500755A (en) * 2018-06-11 2018-09-07 济宁市微科特机械制造有限责任公司 A kind of tooling, processing method for processing the nut of ball-screw
TWI726333B (en) * 2019-02-08 2021-05-01 日商山葉發動機股份有限公司 Grinding jig, grinding device and grinding method
CN110405583A (en) * 2019-07-05 2019-11-05 张美华 It is a kind of for processing the grinding device and polishing process of pump helical blade
CN110405583B (en) * 2019-07-05 2021-09-14 肇庆全球泵业有限公司 Grinding device and grinding method for machining spiral blade for pump

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