KR200448517Y1 - Master spindle of tapping machine - Google Patents

Master spindle of tapping machine Download PDF

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Publication number
KR200448517Y1
KR200448517Y1 KR2020080007651U KR20080007651U KR200448517Y1 KR 200448517 Y1 KR200448517 Y1 KR 200448517Y1 KR 2020080007651 U KR2020080007651 U KR 2020080007651U KR 20080007651 U KR20080007651 U KR 20080007651U KR 200448517 Y1 KR200448517 Y1 KR 200448517Y1
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South Korea
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master
screw shaft
housing
spindles
tapping machine
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KR2020080007651U
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Korean (ko)
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KR20090012701U (en
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최광배
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최광배
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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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
    • B23Q5/10—Driving main working members rotary shafts, e.g. working-spindles driven essentially by electrical means
    • 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
    • B23G1/16—Thread cutting; Automatic machines specially designed therefor in holes of workpieces by taps
    • B23G1/18—Machines with one working spindle
    • B23G1/185—Machines with one working spindle specially adapted for making nuts
    • 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
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • B23Q11/005—Devices for removing chips by blowing
    • 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
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/12—Arrangements for cooling or lubricating parts of the machine
    • B23Q11/126—Arrangements for cooling or lubricating parts of the machine for cooling only
    • B23Q11/127—Arrangements for cooling or lubricating parts of the machine for cooling only for cooling motors or spindles
    • 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
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/14—Methods or arrangements for maintaining a constant temperature in parts of machine tools
    • B23Q11/145—Methods or arrangements for maintaining a constant temperature in parts of machine tools using a jet of gas or cutting liquid
    • 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
    • B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
    • 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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
    • B23Q5/12—Mechanical drives with means for varying the speed ratio

Abstract

본 고안은 탭핑머신의 마스터스핀들에 관한 것으로, 더욱 상세하게는 나사축(40)과 하우징(50)으로 구성된 마스터스핀들(30)을 구비한 통상의 탭핑머신에 있어서, 상기 마스터스핀들(30)의 나사축(40)의 외주면 또는 하우징(50)의 내주면에 축방향의 슬릿(45)(55)을 형성함으로써, 탭핑 가공시 미세한 금속분진이 마스터스핀들(30)의 나사축(40)과 하우징(50) 사이에 형성된 틈새(35, backlash)로 유입되더라도 유입된 금속분진이 마스터스핀들(30)의 내부에 축적되지 않고 나사축(40) 혹은 하우징(50)에 형성한 슬릿(45)(55)을 통하여 용이하게 외부로 배출되며, 아울러 마스터스핀들(30)의 내부에서 발생한 열이 상기 슬릿(45)(55)으로 유입되는 공기나 절삭유 또는 냉각수에 의하여 효과적으로 냉각됨에 따라, 결과적으로 금속분진에 의한 과열 및 그에 따른 금속분진의 융착(融着)을 예방하여 마스터스핀들(30)의 파손을 방지할 수 있도록 한 것을 특징으로 하는 탭핑머신의 마스터스핀들에 관한 것이다.The present invention relates to the master spindles of the tapping machine, and more particularly, in the conventional tapping machine having master spindles 30 composed of the screw shaft 40 and the housing 50, the master spindles of the By forming the slit 45, 55 in the axial direction on the outer circumferential surface of the screw shaft 40 or the inner circumferential surface of the housing 50, fine metal dusts during the tapping process, the screw shaft 40 of the master spindle 30 and the housing ( Slits 45 and 55 formed in the screw shaft 40 or the housing 50 without being accumulated in the master spindles 30 even though the metal dust is introduced into the gap 35 formed between the backs 50. As it is easily discharged to the outside through the heat generated inside the master spindle 30 is effectively cooled by air or cutting oil or cooling water flowing into the slits 45, 55, as a result of the metal dust Overheating and subsequent fusion of metal dust It relates to the master spindle of the tapping machine, characterized in that to prevent damage to the master spindle 30 to prevent damage.

탭, 탭핑, 나사가공, 마스터스핀들, 전조탭, 금속분진, 융착 Tap, Tapping, Threading, Master Spindle, Rolled Tap, Metal Dust, Fusion

Description

탭핑머신의 마스터스핀들{MASTER SPINDLE OF TAPPING MACHINE}Master Spindle of Tapping Machine {MASTER SPINDLE OF TAPPING MACHINE}

본 고안은 탭핑머신의 마스터스핀들에 관한 것으로, 특히 탭핑(tapping) 가공시 마스터스핀들의 나사축과 하우징 사이로 유입되는 미세한 금속분진을 용이하게 배출함과 아울러 나사축과 하우징 사이에서 발생하는 마찰열을 효과적으로 냉각시킬 수 있도록 마스터스핀들의 나사축 혹은 하우징에 슬릿(slit)을 형성함으로써, 탭핑 가공시 마스터스핀들로 유입되는 금속분진에 의한 과열 및 그에 따른 금속분진의 융착(融着)으로 인한 마스터스핀들의 파손을 방지할 수 있는 탭핑머신의 마스터스핀들에 관한 것이다.The present invention relates to the master spindles of the tapping machine, and in particular, during tapping processing, it easily discharges fine metal dust flowing between the screw shaft and the housing of the master spindles, and effectively removes frictional heat generated between the screw shaft and the housing. By forming a slit in the screw shaft or housing of the master spindles for cooling, breakage of the master spindles due to overheating due to metal dust entering the master spindles during tapping and consequent fusion of metal dusts It relates to a master spindle of the tapping machine that can prevent.

일반적으로 탭핑머신은 마스터스핀들에 탭(tap)을 장착함으로써 상기 마스터스핀들의 피치(pitch)와 동일한 피치로 공작물에 암나사를 형성할 수 있도록 하는바, 이하 마스터스핀들이 구비된 일반적인 탭핑머신의 구성을 도 1에 도시된 멀티탭핑머신을 참고로 하여 살펴본다.In general, the tapping machine allows a female thread to be formed on the workpiece at the same pitch as the pitch of the master spindles by attaching a tap to the master spindles. It looks at with reference to the multi-tapping machine shown in FIG.

종래의 일반적인 탭핑머신은, 탭핑머신에 구비된 구동모터(미도시)로부터 동 력을 전달받는 기어박스(10)와, 상기 기어박스(10)로부터 출력되는 동력을 전달받는 동력전달수단(20)과, 상기 동력전달수단(20)에 연결된 마스터스핀들(30)로 구성된다.Conventional tapping machine, the gear box 10 receives the power from the drive motor (not shown) provided in the tapping machine, and the power transmission means 20 receives the power output from the gear box 10 And, it is composed of master spindles 30 connected to the power transmission means (20).

그리고 상기 마스터스핀들(30)은 나사축(40)과 하우징(50)으로 구성되는바, 외주면에 수나사가 형성된 나사축(40)의 일측단은 상기 동력전달수단(20)에 체결되고 타측단에는 어뎁터(41)가 부착되며, 상기 나사축(40)이 삽입되는 하우징(50)은 내주면에 나사축(40)의 수나사에 상응하는 암나사가 형성되어 탭핑머신에 형성된 고정플레이트(60)에 고정설치된다.And the master spindle 30 is composed of a screw shaft 40 and the housing 50, one end of the screw shaft 40 is formed with an external thread on the outer peripheral surface is fastened to the power transmission means 20 and the other end The adapter 41 is attached, and the housing 50 into which the screw shaft 40 is inserted has a female screw corresponding to the male screw of the screw shaft 40 formed on the inner circumferential surface thereof and fixedly installed on the fixing plate 60 formed on the tapping machine. do.

한편, 상기 마스터스핀들(30)의 나사축(40)에 부착된 어뎁터(41)에는 탭(70)을 장착함으로써 공작물(80)을 탭핑 가공할 수 있는바, 상기 탭(70)은 절삭용 탭과 전조용 탭이 있으며, 전조용 탭의 경우 절삭용 탭과 달리 칩이 발생하지 않는 장점이 있어 비교적 얇은 금속 패널의 탭핑 가공에 주로 사용되고 있다.Meanwhile, the work piece 80 may be tapped by attaching a tab 70 to the adapter 41 attached to the screw shaft 40 of the master spindle 30, and the tab 70 may have a cutting tab. There are tabs for rolling and rolling, and rolling tabs are used mainly for tapping of relatively thin metal panels because chips do not occur unlike cutting tabs.

그러나 상기 전조용 탭의 경우, 탭(70)과 공작물(80)의 마찰에 의하여 상대적으로 미세한 금속분진이 더 발생하는 단점이 있는데, 이러한 금속분진은 상기 마스터스핀들(30)의 파손을 유발하였는바, 이를 하기에서 도 2를 참조하여 상세히 살펴본다.However, in the case of the roll tab, there is a disadvantage in that relatively fine metal dust is further generated by friction between the tab 70 and the work piece 80. This metal dust caused the breakage of the master spindle 30. This will be described in detail with reference to FIG. 2 below.

마스터스핀들(30)의 나사축(40)과 하우징(50)의 결합면은 도 2의 확대부분에 도시된 바와 같이 나사축(40)의 수나사와 하우징(50)의 암나사 사이에 틈새(35, backlash)가 존재하는데, 탭핑 가공시 발생한 미세한 금속분진은 상기 나사축(40)의 회전 방향에 따라 상기의 틈새(35)로 유입되거나 유입된 금속분진이 배출되기도 한다.The coupling surface of the screw shaft 40 of the master spindle 30 and the housing 50 has a gap 35 between the male screw of the screw shaft 40 and the female screw of the housing 50, as shown in an enlarged portion of FIG. There is a backlash, the fine metal dust generated during the tapping process may be introduced into the gap 35 or the metal dust introduced into the gap 35 according to the rotation direction of the screw shaft (40).

그러나, 상기 틈새(35)로 유입된 금속분진 중 일부는 하우징(50)의 중심부까지 유입되어 잔류하고, 상기와 같이 잔류하는 금속분진이 축적되면 마찰저항이 상승하여 상당한 마찰열이 발생하며, 더욱이 상기와 같이 마찰열이 발생하면 나사축(40)과 하우징(50)이 팽창함으로써 마찰저항이 더욱 커짐에 따라 마찰열의 발생을 더욱 촉진하는 악순환을 반복하는바, 종국에는 과열로 인하여 금속분진이 나사축(40)과 하우징(50)의 접합면에 융착(融着)하여 마스터스핀들(30)의 파손으로 이어지는 문제점이 있었다.However, some of the metal dust introduced into the gap 35 enters and remains to the center of the housing 50, and when the remaining metal dust accumulates as described above, the frictional resistance increases to generate significant frictional heat. As the frictional heat occurs, the screw shaft 40 and the housing 50 expand, thereby increasing the frictional resistance, thereby repeating a vicious cycle that further promotes the generation of frictional heat. 40) There is a problem fusion to the joint surface of the housing 50, leading to breakage of the master spindle (30).

본 고안은 종래 마스터스핀들의 문제점을 해결하여 탭핑 가공시 금속분진에 의한 마스터스핀들의 파손을 방지하는 데 그 목적이 있는 것으로, 마스터스핀들의 나사축과 하우징 사이의 틈새(backlash)는 그 원활한 구동을 위하여 필요불가결하고, 탭핑 가공시 금속분진의 발생 또한 피할 수 없으며, 아울러 마스터스핀들의 특성상 금속분진이 발생하는 탭핑 가공의 환경으로부터 완벽하게 차단하는 것이 불가능하므로, 금속분진의 유입을 막는 것에서 역발상하여 금속분진이 마스터스핀들로 유입되더라도 마스터스핀들의 내부에 축척되지 않도록 하고, 한편으론 마스터스핀들의 효과적으로 냉각시킬 수 있도록 함으로써, 결과적으로는 금속분진에 의한 마스터스핀들의 파손을 방지할 수 있는 수단을 제공하는 데 본 고안의 목적이 있다.The object of the present invention is to solve the problems of the conventional master spindles and to prevent the damage of the master spindles due to metal dust during tapping, and the backlash between the screw shaft and the housing of the master spindles provides smooth operation. It is indispensable for this purpose, and the generation of metal dust during tapping processing is also inevitable, and due to the characteristics of the master spins, it is impossible to completely block from the environment of tapping where metal dust is generated. When metal dust is introduced into the master spindles, it is not accumulated inside the master spindles, and on the other hand, it is possible to effectively cool the master spindles, thereby providing a means for preventing the master spindles from being damaged by metal dusts. There is a purpose of this invention.

위와 같은 목적을 달성하기 위한 본 고안에 따른 탭핑머신의 마스터스핀들은, 나사축과 하우징으로 구성된 통상의 마스터스핀들을 구비한 탭핑머신에 있어서, 상기 마스터스핀들의 나사축의 외주면 또는 하우징의 내주면에 축방향의 슬릿(slit)을 형성하는 것을 특징으로 하고, 상기 마스터스핀들의 나사축 또는 하우징에 슬릿을 형성함에 있어, 상기 슬릿을 나선형으로 형성하는 것에 부가적인 특징이 있다.Master spindles of the tapping machine according to the present invention for achieving the above object, in the tapping machine having a conventional master spindle consisting of a screw shaft and the housing, the axial direction on the outer peripheral surface of the screw shaft of the master spindle or the inner peripheral surface of the housing It is characterized in that to form a slit (slit), and in forming a slit in the screw shaft or housing of the master spindle, there is an additional feature to the helical formation of the slit.

상기와 같이 구성한 본 고안에 따른 탭핑머신의 마스터스핀들에 의하면, 탭핑 가공시 금속분진이 마스터스핀들의 나사축과 하우징 사이에 형성된 틈새(backlash)로 유입되더라도 유입된 금속분진이 마스터스핀들의 내부에 축적되지 않고 나사축 혹은 하우징에 형성한 슬릿을 통하여 용이하게 외부로 배출되며, 아울러 마스터스핀들의 내부 중심에서 발생한 열이 상기 슬릿으로 유입되는 공기나 절삭유 또는 냉각수에 의하여 효과적으로 냉각됨에 따라, 결과적으로 금속분진에 의한 과열 및 그에 따른 금속분진의 융착(融着)을 예방하여 마스터스핀들의 파손을 방지할 수 있는 효과가 있다.According to the master spindles of the tapping machine according to the present invention configured as described above, even when metal dust is introduced into the backlash formed between the screw shaft and the housing of the master spindle during tapping processing, the introduced metal dust accumulates inside the master spines. It is easily discharged to the outside through the slits formed on the screw shaft or the housing, and as the heat generated in the inner center of the master spindles is effectively cooled by the air, cutting oil or cooling water flowing into the slits, consequently, the metal dust. By preventing overheating and the resulting fusion of metal dust (融 着) there is an effect that can prevent the breakage of the master spin.

이하 본 고안의 바람직한 실시예에 따른 탭핑머신의 마스터스핀들을 도 3 내지 도 6을 참고하여 상세히 살펴보되, 도 1 및 도 2와 동일한 구성은 설명의 중복을 피하고자 동일 부호로 나타낸다.Hereinafter, the master spins of the tapping machine according to the preferred embodiment of the present invention will be described in detail with reference to FIGS. 3 to 6, but the same components as those of FIGS. 1 and 2 are denoted by the same reference numerals to avoid duplication of description.

본 고안에 따른 탭핑머신의 마스터스핀들(30)은, 탭핑머신에 구비된 구동모터의 회전력을 통상의 동력전달수단을 통하여 전달받는 마스터스핀들(30)을 형성하되, 상기 마스터스핀들(30)은 외주면에 수나사를 형성한 나사축(40)의 종단에 어뎁터(41)를 부착하여 탭(70)을 장착할 수 있도록 함과 아울러 상기 나사축(40)의 수나사에 상응하는 암나사를 내주면에 형성한 하우징(50)을 형성하여 상기 나사 축(40)을 하우징(50)에 작동가능토록 삽입한다.The master spindles 30 of the tapping machine according to the present invention form the master spindles 30 that receive the rotational force of the drive motor provided in the tapping machine through a conventional power transmission means, but the master spindles 30 have an outer circumferential surface. A housing in which an adapter 41 is attached to the end of the screw shaft 40 having a male screw formed thereon so that the tab 70 can be mounted and a female screw corresponding to the male screw of the screw shaft 40 is formed on the inner circumferential surface thereof. (50) is formed to insert the screw shaft (40) into the housing (50) to be operable.

상기에 있어 본 고안의 일 실시예에 따른 탭핑머신의 마스터스핀들은, 도 3 및 도 4에 도시된 바와 같이 마스터스핀들(30)의 나사축(40) 외주면에 적어도 하나 이상의 슬릿(45)을 축방향으로 형성하는바, 이때 상기 슬릿(45)은 도면의 도시와 같이 나사축(40)의 외주면에 직선형으로 형성하거나, 또는 도시하지 않으나 나사축의 외주면에 나선형으로 형성할 수 있다.In the above, the master spindles of the tapping machine according to the embodiment of the present invention, as shown in FIGS. 3 and 4, at least one slit 45 on the outer circumferential surface of the screw shaft 40 of the master spindles 30 The slits 45 may be formed in a linear shape on the outer circumferential surface of the screw shaft 40 as shown in the drawing, or may be helically formed on the outer circumferential surface of the screw shaft, not shown.

그리고 본 고안의 다른 실시예에 따른 탭핑머신의 마스터스핀들(30)은, 도 5 및 도 6에 도시된 바와 같이 마스터스핀들(30)의 하우징(50) 내주면에 적어도 하나 이상의 슬릿(55)을 축방향으로 형성하는바, 이때 상기 슬릿(55)은 도면의 도시와 같이 하우징(50)의 내주면에 직선형으로 형성하거나, 또는 도시하지 않으나 하우징의 내주면에 나선형으로 형성할 수 있다.And master spindles 30 of the tapping machine according to another embodiment of the present invention, as shown in Figures 5 and 6, the at least one slit 55 on the inner peripheral surface of the housing 50 of the master spindles 30 The slits 55 may be formed in a straight line on the inner circumferential surface of the housing 50 as shown in the drawing, or may be helically formed on the inner circumferential surface of the housing.

한편, 본 고안은 칩이 발생하지 않는 전조(轉造)용 탭(70)을 이용한 탭핑머신에 적용함이 바람직하다. 그리고 하우징(50)의 상단에 형성된 플랜지(flange)의 상측면에 돌출된 경사면을 형성함으로써 입상(粒狀)의 이물질이 쌓여 슬릿(45)(55)으로 유입되지 않도록 함이 바람직하다. 도면 중 미설명 부호인 "80"은 공작물(80)이며, "90"은 절삭유나 냉각수를 토출하는 노즐(90)이다.On the other hand, the present invention is preferably applied to a tapping machine using a rolling tap 70 for the chip does not occur. In addition, by forming an inclined surface protruding from the upper surface of the flange (flange) formed on the upper end of the housing 50, it is preferable to prevent the foreign matter accumulated in the granules to be introduced into the slits 45, 55. In the drawing, reference numeral 80 denotes a work 80, and 90 denotes a nozzle 90 for discharging cutting oil or cooling water.

상기한 바와 같이 구성한 본 고안의 각 실시예에 따르면, 탭핑 가공시 금속분진이 마스터스핀들(30)의 나사축(40)과 하우징(50) 사이에 형성된 틈새(35)로 유입되더라도, 유입된 금속분진은 마스터스핀들(30)의 내부에 축적되지 않고 나사축(40)과 하우징(50) 사이의 틈새(35)에서 유동하다가 곧 나사축(40) 또는 하우징(50)에 형성한 슬릿(45)(55)을 통하여 외부로 배출될 것이다.According to each embodiment of the present invention configured as described above, even when the metal dust is introduced into the gap 35 formed between the screw shaft 40 of the master spindle 30 and the housing 50 during the tapping process, the introduced metal Dust does not accumulate inside the master spindle 30 and flows in the gap 35 between the screw shaft 40 and the housing 50 and immediately forms a slit 45 formed in the screw shaft 40 or the housing 50. It will be discharged to the outside through 55.

이때 도면 3 및 도 5에 도시된 바와 같이 노즐(90)을 통하여 공급되는 절삭유가 마스터스핀들(30)을 타고 상기 슬릿(45)(55)으로 유입되거나, 혹은 별도의 냉각수를 상기 슬릿(45)(55)으로 직접 공급함으로써, 금속분진의 배출을 더욱 효과적으로 할 수 있다.In this case, as shown in FIGS. 3 and 5, the cutting oil supplied through the nozzle 90 is introduced into the slits 45 and 55 through the master spindles 30, or a separate coolant is supplied to the slits 45. By supplying directly to 55, it is possible to more effectively discharge metal dust.

또한, 상기 슬릿(45)(55)을 통하여 마스터스핀들(30)의 내부 중심까지 공기 및 절삭유나 냉각수가 유통됨으로써, 마스터스핀들(30)을 효과적으로 냉각하여 과열을 방지할 수 있으며, 이때 상기 슬릿을 나선형으로 할 경우에는 보다 고른 냉각을 기대할 수 있다.In addition, air and cutting oil or coolant are distributed to the inner center of the master spindles 30 through the slits 45 and 55, thereby effectively cooling the master spindles 30 to prevent overheating. If it is spiraled, more even cooling can be expected.

따라서, 본 고안에 의하면 탭핑가공시 발생한 금속분진이 마스터스핀들(30)의 내부로 유입되더라도 그 배출이 용이함과 아울러 마스터스핀들(30)을 효과적으로 냉각할 수 있음에 따라, 궁극적으로는 마스터스핀들(30)의 내부로 유입된 금속분진의 과열 및 그 융착을 예방하여 마스터스핀들(30)의 파손을 방지한다.Therefore, according to the present invention, even when the metal dust generated during the tapping process is introduced into the master spins 30, the discharge is easy and the master spins 30 can be effectively cooled, and ultimately, the master spins 30. By preventing the overheating and fusion of the metal dust introduced into the inside of the) prevents damage to the master spindle (30).

도 1은 일반적인 탭핑머신의 마스터스핀들을 나타내는 사용상태도1 is a use state diagram showing the master spin of the general tapping machine

도 2는 도 1의 주요부 확대도2 is an enlarged view of a main part of FIG.

도 3은 본 고안의 일 실시예에 따른 사용상태도3 is a state diagram used in accordance with an embodiment of the present invention

도 4는 도 3의 주요부 분리사시도Figure 4 is an exploded perspective view of the main part of Figure 3

도 5는 본 고안의 다른 실시예에 따른 사용상태도5 is a use state according to another embodiment of the present invention

도 6은 도 5의 주요부 분리사시도6 is an exploded perspective view of the main part of FIG.

*** 도면의 주요 부분에 대한 부호의 설명 ****** Explanation of symbols for the main parts of the drawing ***

30: 마스터스핀들 35: 틈새30: Master Spindle 35: Niche

40: 나사축 41: 어뎁터40: screw shaft 41: adapter

45, 55: 슬릿 50: 하우징45, 55: slit 50: housing

70: 탭 80: 공작물70: tab 80: workpiece

Claims (4)

나사축(40) 및 상기 나사축(40)이 작동가능토록 삽입되는 하우징(50)으로 구성된 통상의 마스터스핀들(30)을 구비한 탭핑머신에 있어서;A tapping machine having a conventional master spindle (30) consisting of a screw shaft (40) and a housing (50) into which the screw shaft (40) is operable to be inserted; 상기 마스터스핀들(30)의 나사축(40)의 외주면에 축방향의 슬릿(45)을 형성하여, 탭핑 가공시 나사축(40)과 하우징(50) 사이의 틈새(35)로 유입되는 금속분진이 상기 슬릿(45)을 통하여 용이하게 배출되도록 하고, 아울러 상기 슬릿(45)으로 공기 또는 절삭유 또는 냉각수가 유입되어 마스터스핀들(30)을 효과적으로 냉각할 수 있도록 한 것을 특징으로 하는 탭핑머신의 마스터스핀들.Metal dust introduced into the gap 35 between the screw shaft 40 and the housing 50 during the tapping process by forming a slit 45 in the axial direction on the outer circumferential surface of the screw shaft 40 of the master spindle 30. The master spindles of the tapping machine characterized in that it is easily discharged through the slit 45, and air or cutting oil or coolant flows into the slit 45 to effectively cool the master spindles 30. . 제1항에 있어서;The method of claim 1; 상기 슬릿(45)을 나선형으로 형성한 것을 특징으로 하는 탭핑머신의 마스터스핀들.Master spindle of the tapping machine, characterized in that the slit 45 is formed in a spiral. 나사축(40) 및 상기 나사축(40)이 작동가능토록 삽입되는 하우징(50)으로 구성된 통상의 마스터스핀들(30)을 구비한 탭핑머신에 있어서;A tapping machine having a conventional master spindle (30) consisting of a screw shaft (40) and a housing (50) into which the screw shaft (40) is operable to be inserted; 상기 마스터스핀들(30)의 하우징(50)의 내주면에 축방향의 슬릿(55)을 형성하여, 탭핑 가공시 나사축(40)과 하우징(50) 사이의 틈새(35)로 유입되는 금속분진 이 상기 슬릿(55)을 통하여 용이하게 배출되도록 하고, 아울러 상기 슬릿(55)으로 공기 또는 절삭유 또는 냉각수가 유입되어 마스터스핀들(30)을 효과적으로 냉각할 수 있도록 한 것을 특징으로 하는 탭핑머신의 마스터스핀들.By forming the slit 55 in the axial direction on the inner circumferential surface of the housing 50 of the master spindle 30, the metal dust is introduced into the gap 35 between the screw shaft 40 and the housing 50 during the tapping process Master spindles of the tapping machine characterized in that it is easily discharged through the slit (55), and air or cutting oil or coolant is introduced into the slit (55) to effectively cool the master spindles (30). 제3항에 있어서;The method of claim 3; 상기 슬릿(55)을 나선형으로 형성한 것을 특징으로 하는 탭핑머신의 마스터스핀들.Master spindles of the tapping machine, characterized in that the slit 55 is formed in a spiral.
KR2020080007651U 2008-06-09 2008-06-09 Master spindle of tapping machine KR200448517Y1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02204008A (en) * 1989-02-03 1990-08-14 Hitachi Koki Co Ltd Method for cooling cutting edge of cutter
JPH10180544A (en) 1996-12-24 1998-07-07 Kato Koki Kk Tap holder device
JP2003334738A (en) * 2002-05-14 2003-11-25 Nikken Kosakusho Works Ltd Pull stud and tool holder
JP2007508156A (en) * 2003-10-14 2007-04-05 ギューリング，イェルク Shaft tool and associated coolant / lubricant supply points

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02204008A (en) * 1989-02-03 1990-08-14 Hitachi Koki Co Ltd Method for cooling cutting edge of cutter
JPH10180544A (en) 1996-12-24 1998-07-07 Kato Koki Kk Tap holder device
JP2003334738A (en) * 2002-05-14 2003-11-25 Nikken Kosakusho Works Ltd Pull stud and tool holder
JP2007508156A (en) * 2003-10-14 2007-04-05 ギューリング，イェルク Shaft tool and associated coolant / lubricant supply points

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