WO2010113360A1 - 管体切断装置及び管体切断方法 - Google Patents
管体切断装置及び管体切断方法 Download PDFInfo
- Publication number
- WO2010113360A1 WO2010113360A1 PCT/JP2009/070646 JP2009070646W WO2010113360A1 WO 2010113360 A1 WO2010113360 A1 WO 2010113360A1 JP 2009070646 W JP2009070646 W JP 2009070646W WO 2010113360 A1 WO2010113360 A1 WO 2010113360A1
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- WIPO (PCT)
- Prior art keywords
- tubular body
- shaft
- main shaft
- inner blade
- eccentric
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D21/00—Machines or devices for shearing or cutting tubes
- B23D21/14—Machines or devices for shearing or cutting tubes cutting inside the tube
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/04—Processes
- Y10T83/0596—Cutting wall of hollow work
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/384—By tool inside hollow work
- Y10T83/392—One tool [either internal or external] having compound motion
Definitions
- the present invention relates to a tubular body cutting apparatus and a tubular body cutting method for cutting a thin tubular body at an arbitrary cutting position in the axial direction.
- a thin metal tube having a predetermined length is obtained by rolling a metal sheet longer than a predetermined length so that two parallel end surfaces are close to each other, and welding between the two end surfaces to form a cylindrical tube. It is cut and manufactured.
- a tubular body cutting device used for cutting a tubular body there is an apparatus that moves a cutting tool abutting on the outer peripheral surface of the tubular body toward the inside of the tubular body in the radial direction of the tubular body (for example, see Patent Document 1). .)
- a hollow shaft body and an inclined cam it is conceivable to apply a moving force in the radial direction of the tube body while supplying a rotational force to the inner blade.
- the hollow shaft body is inserted coaxially with the tube body in the tubular body, and the inner blade is axially supported by the hollow shaft body so as to be movable in a radial direction at a predetermined position in the axial direction via the holding member, and is in contact with the holding member.
- An inclining cam in contact with the cam is provided in the inside so as to be movable in the axial direction.
- Patent Document 2 a tubular body cutting device and a tubular body cutting method for moving the inner blade in the radial direction while rotating the inner blade using a drive mechanism arranged outside the tubular body.
- a planetary gear mechanism including a ring gear and a planetary gear is used as a drive mechanism for moving the inner blade in the radial direction while rotating the inner blade.
- the planetary gear rotates at an angular velocity faster than the angular velocity at the time of revolution due to the difference in the number of teeth from the ring gear. Due to the rotation of the planetary gear, the second shaft that pivotally supports the inner blade rotates eccentrically with the first shaft, and is farthest from the center of the tube at the outer peripheral surface of the inner blade that is pivotally supported by the second shaft. The position of the part changes gradually.
- the position of the outermost surface of the inner blade moves in a direction further away from the center of the tubular body, It is exposed to the outside of the tube body, and the tube body is cut between the outer blades.
- JP 7-136981 A Japanese Patent No. 4264908
- Patent Document 2 has a problem that the operation of continuously cutting a relatively long tube body at a plurality of positions in the axial direction cannot be performed in a short time.
- the object of the present invention is to cut the entire circumference of the tubular body in a short time, eliminate the need to return the mechanism for operating the inner blade to the initial position, and continue the long tubular body at a plurality of axial positions.
- An object of the present invention is to provide a tubular body cutting apparatus and a tubular body cutting method capable of realizing a shortening of the cutting work.
- the tubular body cutting device of the present invention includes an inner blade, first and second outer blades, a drive source, a main shaft body, an eccentric shaft body, and a rotation transmission means.
- the inner blade has a disk shape and is larger than the difference between the radius of the tube body and the radius of the inner blade along the first radial direction of the tube body with respect to the main axis which is the central axis of the tube body inside the tube body.
- An eccentric shaft that is eccentric by a predetermined length is pivotally supported by a rotary shaft that is eccentric by a predetermined length along a second radial direction opposite to the first radial direction.
- the first and second outer blades have an annular shape in which the inner peripheral surface is in contact with the outer peripheral surface of the tubular body over the entire circumference, and the positions of the side surfaces facing each other in the axial direction of the tubular body are set on both side surfaces of the inner blade. It is arranged so as to substantially match the position.
- the drive source outputs rotation.
- the main shaft body is inserted at the open end side into the tube body, and is supported rotatably around the main shaft on the base end side exposed to the outside of the tube body, and at both ends at positions deviated by a predetermined length from the main shaft. It has a through hole with an open circular cross section.
- the eccentric shaft body has a cylindrical shape, is pivotally supported by the through-hole, and the inner blade is aligned with the center position of the inner blade at the first end exposed from the open end of the main shaft body inside the tube body. The second end is exposed to the outside of the tube body.
- the rotation transmitting means transmits the rotation of the driving source to each of the base end side of the main shaft body and the second end portion of the eccentric shaft body at a ratio of N to M (N and M are natural numbers).
- the rotation of the drive source is transmitted at a ratio of N to M, outside the tube to be cut, to each of the main shaft body and the eccentric shaft body eccentric by a predetermined length with respect to the main shaft body.
- the inner shaft fixed to the eccentric shaft body is separated from the center of the eccentric shaft body by a predetermined length while the eccentric shaft body moves N times on the circumference separated from the main shaft by the rotation of the main shaft body. Move up M times.
- the inner blade moves while rotating eccentrically with respect to the main shaft, and the predetermined length is larger than the difference between the radius of the tube and the radius of the inner blade.
- a part of the peripheral surface of the blade is exposed from the inside to the outside a plurality of times while rotating at a plurality of different positions in the circumferential direction of the tubular body.
- the tubular body is cut over the entire circumference by the inner blade and the outer blade. Only a main shaft body that supports an eccentric shaft body is inserted into the inside of the tube body, and no complicated mechanism is arranged.
- the rotation transmission means includes a first transmission portion that transmits the rotation of the drive source to the main shaft body at a first reduction ratio, an intermediate shaft body that is pivotally supported around the main shaft, and a first rotation of the drive source.
- a second transmission portion that transmits to the intermediate shaft body at a reduction ratio of M / N of the reduction ratio, and a cross shaft coupling that constantly transmits the rotation of the intermediate shaft body to the eccentric shaft body at a reduction ratio of 1. It is preferable.
- the rotation of the drive source can be easily supplied to the main shaft body and the eccentric shaft body at a ratio of N to M outside the tube body, and the structure can be simplified.
- the staggered shaft coupling includes a first disk concentrically fixed to the intermediate shaft and a second disk fixed concentrically to the eccentric shaft and sliding only in a diameter direction passing through the eccentric shaft to the first disk. It is preferable to include these. Rotation can be easily supplied to the eccentric shaft body moving on the circumference eccentric with respect to the main shaft body from the same drive source as the main shaft body.
- the tube cutting method of the present invention includes three steps.
- the first step the difference between the radius of the tubular body and the radius of the inner blade is determined along the first radial direction of the tubular body with respect to the main axis that is the central axis of the tubular body to be cut.
- the third step is a step of rotating the inner blade M (M is a natural number different from N) about the rotation axis while rotating the eccentric shaft N (N is a natural number) about the main shaft.
- the entire circumference of the tubular body can be cut in a short time, and the operation of returning the mechanism for operating the inner blade to the initial position is unnecessary, and the long tubular body is continuously provided at a plurality of positions in the axial direction. This makes it possible to shorten the time for cutting.
- a tubular body cutting device 100 manufactures a tubular product having a predetermined length from a workpiece W that is a thin-walled tubular body made of metal such as stainless steel.
- a workpiece W that is a thin-walled tubular body made of metal such as stainless steel.
- main shaft body 1 eccentric shaft body 2, inner blade 3, outer blades 4, 5, intermediate shaft body 6, staggered shaft joint 7, drive shaft body 8, first transmission gear train 9, second transmission A gear train 10 and a motor 50 are provided.
- the main shaft body 1 is a tubular body having a smaller diameter than the work W, and the work W is externally fitted between the open end 12 of the main shaft body 1 and an intermediate portion in the axial direction.
- a shaft support portion 14 having an enlarged diameter with a flange portion 13 interposed therebetween is formed.
- the outer peripheral surface of the shaft support portion 14 is supported by a bearing 111.
- the bearing 111 includes bearings 34 and 35 and is fixed to the frame 101 on the front surface side.
- the main shaft body 1 is formed with a through hole 15 opened at the base end 11 and the open end 12.
- the central axis of the through hole 15 coincides with an eccentric shaft 30 that is eccentric by a predetermined length L with respect to the main shaft 20 that is the central axis of the main shaft body 1.
- a stopper 16 is formed on the outer peripheral surface of the main shaft 1 on the base end 11 side over the entire periphery. The stopper 16 defines the position of the work W that is fitted from the open end 12 side.
- the eccentric shaft body 2 is rotatably fitted in the through hole 15 of the main shaft body 1.
- a step portion 24 and a large diameter portion 25 whose diameters are sequentially increased are formed.
- the outer peripheral surfaces of the step portion 24 and the large-diameter portion 25 are pivotally supported by the pivot support portion 14 via bearings 31 to 33.
- a small-diameter shaft portion 26 is formed at the open end 22 of the eccentric shaft body 2.
- the central axis of the shaft portion 26 is eccentric by a predetermined length L with respect to the eccentric shaft 30 and coincides with the main shaft 20 at the initial position.
- the inner blade 3 has a hollow disk shape and is fitted on the shaft portion 26 of the eccentric shaft body 2.
- the inner blade 3 is fixed to the open end 22 of the eccentric shaft body 2 via a fixture 27, a fixing screw 28 and a lock nut 29.
- the outer diameter of the inner blade 3 is slightly smaller than the inner diameter of the tubular body W. Note that the predetermined length L is larger than the difference between the radius of the tubular body W and the radius of the inner blade 3.
- the outer blades 4 and 5 are the first and second outer blades of the present invention, each having an annular shape, and the inner peripheral surface abuts the outer peripheral surface of the tubular body W over the entire periphery.
- the outer cutter 4 and the outer cutter 5 are arranged at positions where the respective facing surfaces substantially coincide with the positions of both surfaces of the inner cutter 3 in the direction along the main axis L.
- Each of the outer blades 4 and 5 is configured to be divided into left and right as an example, and a position where the inner peripheral surface abuts on the outer peripheral surface of the tubular body W and a position that does not overlap with the position of the outer peripheral surface of the tubular body W in the horizontal direction. It can be moved freely between.
- the intermediate shaft body 6 is pivotally supported by a bearing 112 provided with bearings 36 and 37 with the main shaft 20 aligned with the main shaft 20.
- the bearing 112 is fixed to the frame 102 on the back side.
- the staggered shaft joint 7 is an Oldham joint as an example, and includes a driving side disk 71, an intermediate disk 72, and a driven side disk 73 as shown in FIG.
- the drive side disk 71 is concentrically fixed to one end face of the intermediate shaft body 6.
- the driven side disk 73 is concentrically fixed to the base end portion of the eccentric shaft 2 fitted into the boss portion 732 via a key (not shown).
- the intermediate disk 72 is disposed between the driving side disk 71 and the driven side disk 73.
- a protruding line 711 whose center line passes through the eccentric shaft 30 is formed to protrude.
- a groove 721 into which the ridge 711 is slidably fitted along the longitudinal direction is formed on the surface of the intermediate disk 72 facing the drive side disk 71.
- a ridge 722 is formed on the surface of the intermediate disk 72 facing the driven disk 73.
- the grooves 721 and the ridges 722 are orthogonal to each other within a plane in which the main shaft 20 and the eccentric shaft 30 are normal directions.
- a groove 731 into which the ridge 722 is slidably fitted along the longitudinal direction is formed on the surface of the driven side disk 73 facing the intermediate disk 72.
- the rotation of the driving side disk 71 is transmitted to the intermediate disk 72 by the fitting of the ridges 711 and the grooves 721.
- the rotation of the intermediate disc 72 is transmitted to the driven side disc 73 by the fitting of the ridge 722 and the groove 731.
- the driven side disk 73 rotates at the same rotational speed as the drive side disk 71.
- the staggered shaft joint 7 is not limited to the one that transmits rotation by fitting the ridges 711, 722 and the grooves 721, 731. On the condition that the rotation can be transmitted between two eccentric shafts, An engagement with a pin or a link mechanism may be provided.
- the drive shaft body 8 is pivotally supported by the bearing 113 and the bearing 114 at both ends.
- the bearing 113 includes a bearing 38 and is fixed to the frame 101.
- the bearing 114 includes bearings 39 and 40 and is fixed to the frame 102.
- the first transmission gear train 9 corresponds to the first transmission portion of the present invention, and includes gears 51 to 53, and is arranged between the frame 101 and the frame 102 on the frame 101 side.
- the gear 51 is fixed to the output shaft of the motor 50 that is the drive source of the present invention, and meshes with the gear 52.
- the gear 52 is fixed to the frame 101 side end portion of the drive shaft body 8 via a key 61 and meshes with the gear 51 and the gear 53.
- the gear 53 is fixed to the proximal end portion of the main shaft body 1 via a key 62 and meshes with the gear 52.
- the gear 52 and the gear 53 have 70 teeth.
- the first transmission gear train 9 supplies the rotation of the output shaft of the motor 50 to the main shaft body 1 through gears 51 to 53.
- the second transmission gear train 10 corresponds to the second transmission portion of the present invention, and includes gears 54 and 55, and is disposed on the frame 102 side between the frame 101 and the frame 102.
- the gear 54 is fixed to the frame 102 side of the drive shaft 8 via a key 63 and meshes with the gear 54.
- the gear 55 is fixed to the intermediate shaft 6 via a key 64.
- the gear 54 has 60 teeth and the gear 55 has 80 teeth.
- the second transmission gear train 10 supplies the rotation of the output shaft of the motor 50 to the intermediate shaft body 6 via the drive shaft body 8 and the gears 51 to 53.
- the main shaft 1 rotates at the same speed as the drive shaft 8. Since the number of teeth of the gear 54 is 3/4 of the number of teeth of the gear 55, the intermediate shaft body 6 rotates at a speed 3/4 that of the drive shaft body 8. Therefore, the second transmission gear train 10 constituted by the gears 54 and 55 transmits the rotation of the motor 50 to the intermediate shaft body 6 at a reduction ratio of 3/4 of the reduction ratio of the second transmission gear train 9.
- Rotation of the intermediate shaft body 6 is transmitted to the eccentric shaft body 2 via the cross shaft joint 7.
- the staggered shaft joint 7 transmits the rotation of the intermediate shaft body 6 to the eccentric shaft body 2 at the same rotational speed. Due to the rotation of the main shaft body 1, the eccentric shaft body 2 moves on the circumference with the predetermined length L as the radius around the main shaft 20. During this time, rotation is supplied to the eccentric shaft body 2 from the cross shaft coupling 7 at a speed that is 3/4 of the rotational speed of the main shaft body 1, and the eccentric shaft body 2 is at a speed that is 3/4 of the rotational speed of the main shaft body 1. While rotating, it moves on a circumference having a predetermined length L as a radius around the main shaft 20.
- the staggered shaft joint 7 is configured such that the projection 711 of the drive side disc 71 slides along the first diameter direction in the groove 721 of the intermediate disc 72, and the projection 722 of the intermediate disc 72 is the groove of the driven side disc 73. It slides in the inside of 731 along the 2nd diameter direction orthogonal to the 1st diameter direction.
- the rotation of the intermediate shaft body 6 along the eccentric shaft body 2 and the rotation of the driving side disk 71 around the main axis 20 to the driven side disk 73 moving on the circumference with the predetermined length L as the radius centered on the main axis 20 is performed. It can be transmitted at all times.
- the inner blade 3 fixed to the shaft portion 26 protruding from the open end 12 of the eccentric shaft body 2 moves on the circumference having a predetermined length L as a radius around the eccentric shaft 30 by the rotation of the eccentric shaft body 2.
- the inner blade 30 has a circumference that is further eccentric by a predetermined length L from the eccentric shaft 30 that moves on a circumference that is eccentric by a predetermined length L with respect to the main shaft 20 that coincides with the central axis of the tubular body W. Move up.
- the initial positions of the centers of the shaft portion 26 and the inner blade 3 are set on the main shaft 20.
- the disk-shaped inner blade is larger than the difference between the radius of the tubular body and the radius of the inner blade along the first radial direction of the tubular body with respect to the main axis that is the central axis of the tubular body to be cut.
- the inner peripheral surfaces of the first and second outer blades are in contact with the outer peripheral surface of the tubular body over the entire circumference, and the positions of the side surfaces facing each other in the axial direction of the tubular body are set on both sides of the inner blade.
- the inner blade 3 is disposed at an initial position whose center position coincides with the main shaft 20.
- the outer blades 4, 5 are divided into left and right sides, the inner peripheral surface is separated from the outer peripheral surface of the main shaft body 1, and the tube body W is fitted on the main shaft body 1 until one end abuts against the stopper 16.
- the inner blade 3 is eccentric with respect to the main shaft 20 along the first radial direction of the tube body W by a predetermined length L that is greater than the difference between the radius of the tube body W and the radius of the inner blade 3. From 30, it is arranged inside the tubular body W at a position eccentric by a predetermined length L along the second radial direction opposite to the first radial direction.
- each of the outer blades 4 and 5 is integrated so that the inner peripheral surface is in contact with the outer peripheral surface of the tubular body W. Accordingly, the outer peripheral surfaces of the outer blades 4 and 5 are in contact with the outer peripheral surface of the tubular body W over the entire periphery, and the positions of the side surfaces facing each other in the axial direction of the tubular body W are set on both sides of the inner blade 3. It arrange
- the motor 50 is driven in a state where the tubular body W is gripped by the outer blades 4 and 5.
- the rotation of the output shaft of the motor 50 is supplied to the main shaft body 1 and the eccentric shaft body 2 via the first transmission gear train 9, the second transmission gear train 10 and the staggered shaft joint 7.
- the motor 50 By driving the motor 50 so that the eccentric shaft 30 rotates four times around the main shaft 20, the inner blade 3 rotates three times around the eccentric shaft 30.
- the inner blade 3 is further decentered by a predetermined length L from the eccentric shaft 30 moving at a first speed on a circumference eccentric by a predetermined length L. Move on the circumference in the same direction at a second speed. Since the second speed is 3/4 of the first speed, when the main shaft body 1 rotates 1 to 3 times, the eccentric shaft body 2 is shown in FIGS. 3E, 3I, and 3M, respectively. 3/4 rotation, 3/2 rotation, and 9/4 rotation.
- the inner blade 3 gradually changes the position of the peripheral surface while rotating with respect to the tube W, and a part of the peripheral surface is exposed to the outside of the tube W at a plurality of positions on the outer peripheral surface of the tube W. Move while letting.
- the tubular body W is sandwiched between both side surfaces of the inner blade 3 and the opposing surfaces of the outer blades 4, 5. Disconnected.
- the eccentric shaft body 2 rotates 3/16 each time the main shaft body 1 rotates 1/4.
- the main shaft 1 rotates 3 + 3/4 from the initial position in FIG. 3 (A)
- the eccentric shaft 2 rotates 2 + 13/16 from the initial position in FIG. 3 (A).
- the eccentric shaft body 2 rotates three times from the initial state, and the initial state shown in FIG. 3 (A) is obtained.
- the tube W is moved at a plurality of positions in the axial direction without performing the operation of returning the apparatus to the initial state. Can be cut. By repeating this, it is possible to easily produce a plurality of short tubes having a short axial length from a single tube W in a short time.
- the tube body W there are only the main shaft body 1 through which the eccentric shaft body 2 passes and the inner blade 3 fixed to the eccentric shaft body 2. It is not necessary to arrange a complicated mechanism inside the tube W, and the tube W having a small inner diameter can be cut.
- the rotational speed ratio between the main shaft body 1 and the eccentric shaft body 2 is not limited to 4 to 3, and the eccentric shaft body 2 is rotated by a natural number of times different from the main shaft body 1 while the main shaft body 1 rotates by a natural number of times. That's fine.
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Abstract
Description
第1及び第2の外刃を、その内周面が前記管体の外周面に全周にわたって当接するとともに、前記管体の軸方向における互いに対向する側面のそれぞれの位置を前記内刃の両側面の位置に略一致するように配置する工程と、
前記主軸を中心に前記偏心軸をN(Nは自然数)回転させる間に前記回転軸を中心に前記内刃をM(Mは自然数)回転させる工程と、
この発明に係る管体切断方法により、管体切断装置100を用いて管体Wを切断する際には、内刃3をその中心位置が主軸20に一致する初期位置に配置する。この状態で、外刃4,5を左右に分割して内周面を主軸体1の外周面から離間させ、管体Wを一端がストッパ16に当接するまで主軸体1に外嵌させる。
2-偏心軸体
3-内刃
4,5-外刃
6-中間軸体
7-喰違い軸継手
8-駆動軸体
9-第1伝達ギア列(第1伝達部)
10-第2伝達ギア列(第2伝達部)
11-基端
12-開放端
50-モータ(駆動源)
100-管体切断装置
W ワーク(管体)
Claims (5)
- 切断すべき管体の内部で前記管体の中心軸である主軸に対して前記管体の第1の半径方向に沿って所定長さだけ偏心した偏心軸から、前記第1の半径方向の逆方向の第2の半径方向に沿って前記所定長さだけ偏心した回転軸に軸支された円盤状の内刃と、
前記管体の外周面に全周にわたって内周面が当接する環状の第1及び第2の外刃あって、前記管体の軸方向における互いに対向する側面のそれぞれの位置を前記内刃の両側面の位置に略一致させて配置される第1及び第2の外刃と、
回転を出力する駆動源と、
開放端側を前記管体の内部に挿入するとともに、前記管体の外部に露出した基端側で前記主軸を中心に回転自在に支持され、前記主軸から前記所定長さだけ偏心した位置で両端に開放した円形断面の貫通孔を有する主軸体と、
前記貫通孔に軸支され、前記管体の内部で前記主軸体の開放端から露出した第1の端部に前記内刃の中心位置を前記主軸位置に一致させて前記内刃を固定するとともに、第2の端部が前記管体の外部に露出した円柱状の偏心軸体と、
前記主軸体の基端側及び前記偏心軸体の第2の端部のそれぞれに前記駆動源の回転をN対M(N及びMは自然数)の比率で伝達する回転伝達手段と、
を備え、前記所定長さは、前記管体の半径と前記内刃の半径との差より大きい管体切断装置。 - 前記回転伝達手段は、
前記駆動源の回転を前記主軸体に第1の減速比で伝達する第1伝達部と、
前記主軸回りに軸支された中間軸体と、
前記駆動源の回転を前記第1の減速比のM/Nの減速比で前記中間軸体に伝達する第2伝達部と、
前記中間軸体の回転を前記偏心軸体に常時伝達する喰違い軸継手と、
を含む請求項1に記載の管体截断装置。 - 前記喰違い軸継手は、前記中間軸体に同心状に固定された駆動側円盤と、前記偏心軸に同心状に固定された従動側円盤と、前記駆動側円盤に直径する第1の直径方向にのみ摺動するとともに前記従動側円盤に前記第1の直径方向に直交する第2の直径方向にのみ摺動する中間円盤と、を含む請求項2に記載の管体切断装置。
- 前記Nは4、前記Mは5である請求項1乃至3の何れかに記載の管体切断装置。
- 円盤状の内刃を、切断すべき管体の中心軸である主軸に対して前記管体の第1の半径方向に沿って前記管体の半径と前記内刃の半径との差より大きい所定長さだけ偏心した偏心軸から、前記第1の半径方向の逆方向の第2の半径方向に沿って前記所定長さだけ偏心した位置で、前記管体の内部に配置する工程と、
第1及び第2の外刃を、その内周面が前記管体の外周面に全周にわたって当接するとともに、前記管体の軸方向における互いに対向する側面のそれぞれの位置を前記内刃の両側面の位置に略一致するように配置する工程と、
前記主軸を中心に前記偏心軸をN(Nは自然数)回転させる間に前記偏心軸を中心に前記内刃をM(MはNと異なる自然数)回転させる工程と、
を含む管体切断方法。
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CN2009801581555A CN102355975B (zh) | 2009-03-31 | 2009-12-10 | 管体切断装置和管体切断方法 |
EP09842711.5A EP2415545B1 (en) | 2009-03-31 | 2009-12-10 | Pipe cutting device and pipe cutting method |
US13/258,216 US8813618B2 (en) | 2009-03-31 | 2009-12-10 | Tube cutting apparatus and tube cutting method |
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JP2009084061A JP4616917B2 (ja) | 2009-03-31 | 2009-03-31 | 管体切断装置及び管体切断方法 |
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CN103433547A (zh) * | 2013-08-10 | 2013-12-11 | 北华航天工业学院 | 回转型对称曲柄摇块柔性管道内壁支承装置 |
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DE102016117956B4 (de) | 2016-09-23 | 2019-05-09 | Rattunde & Co Gmbh | Schneidexzenterantrieb mit variablem Hub |
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CN103433547A (zh) * | 2013-08-10 | 2013-12-11 | 北华航天工业学院 | 回转型对称曲柄摇块柔性管道内壁支承装置 |
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CN113631310A (zh) * | 2019-03-27 | 2021-11-09 | 控制切割有限公司 | 用于在钻台上切割管道的改进方法及其工具 |
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EP2415545A1 (en) | 2012-02-08 |
US8813618B2 (en) | 2014-08-26 |
US20120011976A1 (en) | 2012-01-19 |
EP2415545A4 (en) | 2015-05-20 |
JP2010234469A (ja) | 2010-10-21 |
JP4616917B2 (ja) | 2011-01-19 |
EP2415545B1 (en) | 2016-07-20 |
CN102355975A (zh) | 2012-02-15 |
CN102355975B (zh) | 2013-06-12 |
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