WO2008009170A1 - Mandrin de perçage à serrage manuel et mécanisme autobloquant de collet d'appui - Google Patents

Mandrin de perçage à serrage manuel et mécanisme autobloquant de collet d'appui Download PDF

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Publication number
WO2008009170A1
WO2008009170A1 PCT/CN2006/001637 CN2006001637W WO2008009170A1 WO 2008009170 A1 WO2008009170 A1 WO 2008009170A1 CN 2006001637 W CN2006001637 W CN 2006001637W WO 2008009170 A1 WO2008009170 A1 WO 2008009170A1
Authority
WO
WIPO (PCT)
Prior art keywords
self
locking mechanism
bearing ring
drill chuck
hand
Prior art date
Application number
PCT/CN2006/001637
Other languages
English (en)
Chinese (zh)
Inventor
Zhenqian Hu
Luwen Zhang
Original Assignee
Zhenqian Hu
Luwen Zhang
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.)
Filing date
Publication date
Application filed by Zhenqian Hu, Luwen Zhang filed Critical Zhenqian Hu
Priority to PCT/CN2006/001637 priority Critical patent/WO2008009170A1/fr
Publication of WO2008009170A1 publication Critical patent/WO2008009170A1/fr

Links

Classifications

    • 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
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/1207—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
    • B23B31/123—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis with locking arrangements
    • 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
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/1207—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
    • B23B31/1238—Jaws movement actuated by a nut with conical screw-thread
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2231/00—Details of chucks, toolholder shanks or tool shanks
    • B23B2231/38—Keyless chucks for hand tools

Definitions

  • the invention relates to a hand tight drilling chuck and a bearing ring self-locking mechanism in the hand tight drilling chuck. Background technique
  • Hand-tight drill chucks are a common tool used in daily life, mainly for eye-catching, drilling holes, etc. when installing or fixing items, building, and decoration.
  • the existing hand drill chuck includes a clamping body, a front cap, three jaws, a screw ring, a bearing component, a rear cap and a cover, wherein the clamping body is provided with three column holes for receiving the guiding jaws
  • the working principle is to use the front cap to drive the screw ring to rotate and drive the three jaws for clamping and loosening action, so as to achieve the purpose of clamping and loosening the drill bit.
  • the object of the present invention is to provide a self-locking mechanism for a bearing ring of a hand-tight drill chuck, which can be self-locked by a collet chuck, and is less prone to loosening and breaking during use.
  • Another object of the present invention is to provide a hand-tight drill chuck having a self-locking mechanism, which has the advantages of no looseness during use and safety.
  • the bearing ring self-locking mechanism of the hand-tight drill chuck of the present invention comprises a bearing ring, at least one bead frame and balls mounted on the bead frame, wherein:
  • the bearing ring is fixedly connected with the outer side of the clamping body in the hand drill chuck, at least at the end surface thereof a groove is provided, and the inner bottom surface of the groove is inclined from high to low from the inside to the outside;
  • the bead frame is made of an elastic material and is radially movable along the radius of the bearing ring and mounted on the bearing ring. In the recess, the bead frame is provided with a hole for mounting the ball.
  • the bead frame includes two or more holes for mounting the balls.
  • the fixed connection of the bearing ring to the outer side of the drill chuck is by a rib, a projection, a groove connection or an interference connection that can be engaged with each other.
  • the balls are steel balls that are rotatably mounted in the holes of the bead frame when unstressed.
  • the hole of the bead frame is an open hole.
  • the bead frame is provided with wings on both sides of the projection for radial positioning with the bearing ring. .
  • the hand drill chuck of the present invention comprises a clamping body, a plurality of jaws, a screw ring, a front cap, a rear cap and a self-locking mechanism, the outer wall of the screw ring is fixedly connected with the front cap, and the screw ring is threaded Engaging with the clamping jaw, the clamping jaw is inserted into the column hole of the clamping body, the self-locking mechanism is disposed at an outer circumference of the clamping body and an end of the spiral ring, and the self-locking mechanism includes a bearing ring, at least one bead frame and a ball mounted on the bead frame, the bearing ring being fixedly connected to an outer side surface of the body of the hand drill chuck, at least one groove is provided at an end surface thereof, and the inside of the groove The bottom surface is inclined from high to low from the inside to the outside; the bead frame is made of an elastic material and is radially movable along a radius of the bearing ring and is mounted in a groove of the
  • the clamping body has a hollow cylinder, and a shoulder groove is disposed in a middle portion of the outer wall of the cylinder, and the screw ring and the self-locking mechanism are disposed in the shoulder groove.
  • the self-locking mechanism of the invention is used for replacing the bearing mechanism in the existing hand-tight drill chuck, and can not only realize the function of the existing hand-tight drill chuck, but also can achieve the purpose of self-locking by the setting of the self-locking mechanism, preventing the clip
  • the compact bit is loosened by vibration during use.
  • the hand-clamping bit of the invention can achieve self-locking purpose by merely changing the shape of the two parts in the original bearing component by improving the original bearing component, and has the advantages of convenient installation, self-locking and good results, economical and practical. , compact structure, simple operation and so on.
  • Figure 1 is a schematic cross-sectional view of the drill collar of the present invention
  • FIG. 2 is a perspective exploded view of the hand-tight drill chuck of the present invention
  • FIG. 3 is a perspective exploded view of the self-locking mechanism of the present invention.
  • Figure 4 is a working principle diagram of the self-locking mechanism of the present invention.
  • Fig. 5 is a perspective exploded view showing another embodiment of the self-locking mechanism of the present invention. detailed description
  • the hand drill chuck of the present invention includes a clamping body 1 and three jaws.
  • the clamping body 1 is substantially a hollow cylinder, and is provided at one end of the cylinder as a screw hole 11 or a taper hole for coupling with the driving shaft; the outer side wall of the middle portion of the cylinder is provided with a self-locking mechanism for accommodating the bearing ring and
  • the shoulder groove 13 of the spiral ring 4 is provided with three axially symmetric column holes 12 at the shoulder groove 13, which are inclined with respect to the center of rotation, as shown in FIG.
  • the spiral ring 4 includes two parts that can be assembled into a circular ring (may also be three or four parts that are easy to assemble, or can be integrated), and is directly buckled at the shoulder groove 13 of the clamping body 1 during assembly. , After assembly, the thread 40 of the screw ring 4 meshes with the thread 31 of the jaw 3, that is, the three jaws 3 can be moved while rotating the screw ring 4, thereby achieving the purpose of clamping and loosening the drill bit.
  • the front cap 2 is fixedly connected to the outer wall of the spiral ring 4, and the fixed connection may be an interference connection, or may be connected by ribs, projections, grooves, pits, holes, and snap-fit structures that can be engaged with each other.
  • the rear cap 8 and the clamping body 1 are provided with a detachable fixed connection of one end of the tapered hole 11.
  • the bearing ring self-locking mechanism includes a bearing ring 7 fixedly connected to the outer wall of the shoulder groove 13 of the clamping body 1, a plurality of bead frames 6 made of elastic material and a plurality of balls 5 (may be a bead frame and a ball), wherein the bearing ring 7 is provided with six recesses 70 on the surface, and the inner bottom surface of the recess 70 is inclined from the inside to the outside, as shown in FIG. Each side has a notch 71 on each side.
  • the bead frame 6 includes an opening 60, and the wings 61 are provided at the protrusions on both sides.
  • the bead frame 6 is just caught in the groove 70, and only the radial movement can be performed in each groove 70 without circumferential rotation. And, the bead frame 6 and the bearing ring 7 are restrained by the cooperation of the wing 61 and the notch 71 between the bead frame 6 and the bearing ring 7.
  • a steel ball 5 of the same diameter is placed in the hole 60 of the bead frame 6, so that the steel ball 5 can be freely rotated without being subjected to pressure.
  • the working principle of the self-locking mechanism in the hand-tight drilling chuck of the present invention is as follows:
  • the hand-tight drill chuck of the present invention fixes the bearing ring 7 to the outer side surface of the shoulder groove 13 of the clamp body 1.
  • a bead frame 6 which is radially displaced relative to the bearing ring and which is not rotatable in the circumferential direction is placed, and a steel ball is placed in the opening hole 60 of the bead frame 6.
  • rotating the front cap 2 drives the screw ring 4 to rotate, and further drives the jaws 3 to move.
  • the steel ball 5 can freely rotate in the hole 60 of the bead frame 6, the steel ball 5 is used as a bearing. , the screw 4 can be easily rotated, as shown in Figure 1.
  • the screw ring 4 When the jaws 3 are subjected to the resistance, the screw ring 4 is pushed to move in the opposite direction, so that the screw ring 4 can be pushed down to press the steel ball 5 . Since the inner bottom surface of the recess 70 is inclined from the inside to the outside, During the downward movement, the spiral ring 4 can press the steel ball 5 to move to a position where the gap is large (from the inside to the outside:), as shown in Fig. 4, thereby driving the bead frame 6 to perform radial displacement.
  • the bead frame 6 After moving a certain distance, the bead frame 6 is constrained by the bearing ring 7, and the hole 60 begins to elastically deform, and the steel ball 5 is tightly hugged, forcing the steel ball 5 to not rotate when subjected to vibration, and the spiral ring 4 cannot be rotated. Rotate in the direction of loosening to achieve the purpose of self-locking. When loosening, simply rotate the front cap 2 in the opposite direction to drive the screw ring 4 in the opposite direction to drive the jaws 3 to move and release the drill bit.
  • another embodiment of the bearing ring self-locking mechanism of the present invention includes a bearing ring 7, a bead frame 6 and a steel ball 5, wherein three convex grooves 72 are provided on the bearing ring 7, in the convex groove 7
  • the two ends of the groove 2 are provided with a groove 70, and the inner bottom surface of the groove 70 is inclined from the inside to the outside.
  • the steel ball 5 is subjected to the force of the screw ring 4, it can move from the inside to the outside, as shown in FIG.
  • two steel ball holes 60 are provided in the bead frame 6, as shown in FIG.
  • the rest of the structure and working principle in this embodiment are the same as those in the above embodiment, and therefore will not be described separately.
  • the change of the bearing component in the middle has the function of bearing and also has the self-locking function, that is, the self-locking mechanism relies on the deformation of the hole 60 in the bead frame 6 to prevent the steel ball 5 from rotating when it is vibrated, thereby achieving the purpose of self-locking.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)

Abstract

La présente invention concerne un mécanisme autobloquant de collet d'appui destiné à un mandrin de perçage à serrage manuel. Ledit mécanisme autobloquant comprend un corps de serrage, une paire de mâchoires de préhension, un écrou, un capot avant, un capot arrière et un mécanisme autobloquant de collet d'appui. La paroi externe de l'écrou est fixée rigide au capot avant. L'écrou s'engrène, à l'aide de son filetage, avec les mâchoires de préhension. Les mâchoires de préhension sont fixées dans les trous du corps de serrage. Un mécanisme autobloquant est placé sur le pourtour du corps de serrage et l'extrémité de l'écrou. Le mécanisme autobloquant comprend un collet d'appui, au moins un support de billes et un certain nombre de billes placées dans le support de billes. Le collet d'appui est fixé rigide sur la surface externe du corps du mandrin de perçage à serrage manuel. Le collet d'appui est doté d'au moins une rainure sur sa face d'extrémité, la surface inférieure interne de la rainure s'étendant de l'intérieur vers l'extérieur, de façon que le côté interne soit plus haut que le côté externe. Le support de billes est constitué d'un matériau élastique, et peut être monté dans la rainure du collet d'appui et se déplacer radialement par rapport au rayon du collet d'appui. Le support de billes est doté de trous destinés à recevoir les billes. Le mandrin de perçage à serrage manuel peut doter un élément de support classique d'une fonction d'autoblocage en plus de la fonction de support en en modifiant la structure. L'élément de support est d'installation pratique, a une bonne efficacité d'autoblocage, est économique, possède une structure compacte et est facile à actionner.
PCT/CN2006/001637 2006-07-11 2006-07-11 Mandrin de perçage à serrage manuel et mécanisme autobloquant de collet d'appui WO2008009170A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2006/001637 WO2008009170A1 (fr) 2006-07-11 2006-07-11 Mandrin de perçage à serrage manuel et mécanisme autobloquant de collet d'appui

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2006/001637 WO2008009170A1 (fr) 2006-07-11 2006-07-11 Mandrin de perçage à serrage manuel et mécanisme autobloquant de collet d'appui

Publications (1)

Publication Number Publication Date
WO2008009170A1 true WO2008009170A1 (fr) 2008-01-24

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Application Number Title Priority Date Filing Date
PCT/CN2006/001637 WO2008009170A1 (fr) 2006-07-11 2006-07-11 Mandrin de perçage à serrage manuel et mécanisme autobloquant de collet d'appui

Country Status (1)

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WO (1) WO2008009170A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1772219A3 (fr) * 2005-10-10 2009-06-17 Shanxi Huifeng Machine Industrial Co., Ltd. Mandrin de perceuse se serrant à la main et résistant aux chocs
CN103143755A (zh) * 2013-03-18 2013-06-12 山西惠丰机械工业有限公司 滑动摩擦自锁钻夹头
CN103212740A (zh) * 2013-04-18 2013-07-24 玉环胜友工具有限公司 自紧钻夹头轴座
CN103212738A (zh) * 2013-04-18 2013-07-24 玉环胜友工具有限公司 自紧钻夹头整体式承导总成
CN103212737A (zh) * 2013-04-18 2013-07-24 玉环胜友工具有限公司 自紧钻夹头轴座与一体式导承座的连接结构
CN106041165A (zh) * 2016-08-05 2016-10-26 无锡市天龙装饰材料有限公司 一种五金配件加工用钻孔机
CN109333049A (zh) * 2018-11-13 2019-02-15 嘉兴鼎泰自动化科技有限公司 一种手电钻用钻夹头自动装配装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2680390Y (zh) * 2004-02-05 2005-02-23 山西惠丰机械有限公司 一种手紧自锁式钻夹头
CN2701558Y (zh) * 2004-04-29 2005-05-25 三鸥集团有限公司 改进的手紧钻夹头
CN1623710A (zh) * 2003-12-04 2005-06-08 百得有限公司 卡盘
CN2726771Y (zh) * 2004-06-15 2005-09-21 山西惠丰机械有限公司 一种固定锁紧式钻夹头

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1623710A (zh) * 2003-12-04 2005-06-08 百得有限公司 卡盘
CN2680390Y (zh) * 2004-02-05 2005-02-23 山西惠丰机械有限公司 一种手紧自锁式钻夹头
CN2701558Y (zh) * 2004-04-29 2005-05-25 三鸥集团有限公司 改进的手紧钻夹头
CN2726771Y (zh) * 2004-06-15 2005-09-21 山西惠丰机械有限公司 一种固定锁紧式钻夹头

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1772219A3 (fr) * 2005-10-10 2009-06-17 Shanxi Huifeng Machine Industrial Co., Ltd. Mandrin de perceuse se serrant à la main et résistant aux chocs
CN103143755A (zh) * 2013-03-18 2013-06-12 山西惠丰机械工业有限公司 滑动摩擦自锁钻夹头
CN103212740A (zh) * 2013-04-18 2013-07-24 玉环胜友工具有限公司 自紧钻夹头轴座
CN103212738A (zh) * 2013-04-18 2013-07-24 玉环胜友工具有限公司 自紧钻夹头整体式承导总成
CN103212737A (zh) * 2013-04-18 2013-07-24 玉环胜友工具有限公司 自紧钻夹头轴座与一体式导承座的连接结构
CN103212737B (zh) * 2013-04-18 2016-08-31 玉环胜友工具有限公司 自紧钻夹头轴座与一体式导承座的连接结构
CN106041165A (zh) * 2016-08-05 2016-10-26 无锡市天龙装饰材料有限公司 一种五金配件加工用钻孔机
CN106041165B (zh) * 2016-08-05 2017-12-22 无锡市天龙装饰材料有限公司 一种五金配件加工用钻孔机
CN109333049A (zh) * 2018-11-13 2019-02-15 嘉兴鼎泰自动化科技有限公司 一种手电钻用钻夹头自动装配装置
CN109333049B (zh) * 2018-11-13 2024-04-05 嘉兴鼎泰自动化科技有限公司 一种手电钻用钻夹头自动装配装置

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