WO2004026512A1 - Mandrin de perceuse electrique - Google Patents

Mandrin de perceuse electrique Download PDF

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Publication number
WO2004026512A1
WO2004026512A1 PCT/CN2003/000802 CN0300802W WO2004026512A1 WO 2004026512 A1 WO2004026512 A1 WO 2004026512A1 CN 0300802 W CN0300802 W CN 0300802W WO 2004026512 A1 WO2004026512 A1 WO 2004026512A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
drill body
drill
impact member
mother
Prior art date
Application number
PCT/CN2003/000802
Other languages
English (en)
French (fr)
Inventor
Xingda Tan
Original Assignee
Shandong Weida Machinery, Co., Ltd.
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 Shandong Weida Machinery, Co., Ltd. filed Critical Shandong Weida Machinery, Co., Ltd.
Priority to AU2003272840A priority Critical patent/AU2003272840A1/en
Priority to US10/528,481 priority patent/US7469908B2/en
Priority to EP03753220A priority patent/EP1559491B1/en
Publication of WO2004026512A1 publication Critical patent/WO2004026512A1/zh

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
    • B23B31/1238—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
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S279/00—Chucks or sockets
    • Y10S279/902—Keyless type socket
    • 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
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17615—Obliquely guided reciprocating jaws
    • Y10T279/17623—Threaded sleeve and jaw
    • Y10T279/17632—Conical sleeve
    • 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
    • Y10T279/00—Chucks or sockets
    • Y10T279/20—Chucks or sockets with safety feature
    • 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
    • Y10T279/00—Chucks or sockets
    • Y10T279/32—Means to prevent jaw loosening

Definitions

  • the invention relates to a drilling tool clamping device, in particular to a dynamic clamping drill chuck.
  • the existing hand-tight drill chucks generally consist of a drill body, a jaw, a wire mother, a wire mother sleeve, a bearing, a front sleeve, and a rear sleeve.
  • the three clamping jaws are respectively installed in the three equally divided oblique holes of the drill body, and the thread mother is installed in the thread mother groove of the drill body.
  • the thread of the mother thread and the thread of the clamping jaw form a thread transmission mechanism, and the thread mother sleeve and the thread mother
  • the front sleeve is connected with the silk mother or silk mother sleeve key
  • the rear sleeve is fixedly connected with the drill body
  • the threaded hole at the back of the drill body is connected with the drive shaft screw of the power tool.
  • the drill body is driven to drive the three claws and the clamped tools to rotate synchronously.
  • Patent US005988653A discloses a clamp, which can clamp the tool shank by the power of a power tool, but the structure is too complicated.
  • the technical problem to be solved by the present invention is to overcome the above-mentioned shortcomings of the prior art, and to provide a dynamic clamping drill chuck with simple structure, convenient use, power clamping, and reliable clamping.
  • the technical solution adopted by the present invention to solve the above technical problems is:
  • a power clamping drill chuck which comprises a drill body, a wire mother, a clamping jaw, a front sleeve, a rear sleeve, a silk mother sleeve, a rolling body, and three clamping jaws are installed separately.
  • the thread female thread and the jaw thread installed in the inclined hole of the drill body form a thread transmission.
  • the front sleeve is fixedly connected to the drill body, which is characterized by: It is connected and extended backward.
  • the rear end has several convex keys.
  • the rear sleeve is set on the rear of the silk mother sleeve and can be rotated relative to the silk mother sleeve and the drill body.
  • the rear end of the rear sleeve has incomplete annular holes and the inner end has With several keys, a positioning sleeve is fixedly connected to the back of the drill body, and the rear sleeve is axially positioned on the drill body.
  • a plurality of elastic impact members are installed between the silk mother sleeve and the rear sleeve, and the elastic impact members have several elastic deformation portions. And several convex keys.
  • the rear sleeve of the power clamping drill chuck and the back side of the drill body of the present invention may further be provided with a positioning ring, and the positioning ring has a plurality of connection keys and connection holes.
  • An anti-friction ring or a shaft is provided between the outer wall of the wire mother sleeve and the inner wall of the rear sleeve.
  • the electric drill drive shaft drives the drill body and jaws to rotate, holding the back cover in hand, keeping the back cover from rotating.
  • a positioning ring can also be installed between the rear sleeve and the front end of the electric drill and fixed on the front end of the electric drill. There are keys on the positioning ring to restrict the rear sleeve to rotate relative to the positioning ring within a certain angle. At the two extreme positions of this angle, the rear sleeve cannot rotate.
  • the wire mother of the drill chuck is fixedly connected to the wire mother sleeve, the convex key slope of the rear end of the wire mother sleeve and the convex key slope of the elastic impact member contact each other, and the elastic impact member is connected to the rear sleeve, thereby preventing the wire mother from turning, In this way, the clamping jaws and the silk mother have relative rotation.
  • the jaw is closed by the thread transmission of the thread mother and the jaw until the jaw contacts the tool handle to be clamped. After the jaw contacts and clamps the tool handle, the resistance of the thread mother and the jaw thread transmission increases sharply.
  • the elastic impact member moves back to In the original position, the convex key inclined surface of the wire mother sleeve collides with the convex key inclined surface of the elastic impact member during rotation.
  • This impact force causes a slight relative rotation between the wire mother and the clamping jaw, so that the clamping jaw tightly grips the tool handle.
  • the impact force of the inclined surfaces of the two convex keys again forces the elastic force of the elastic deformation part of the elastic impact member to detach the two convex keys again.
  • the drive shaft of the electric drill continues to rotate, and the above-mentioned impact process is repeated continuously, so that the clamping jaws firmly clamp the tool handle.
  • the present invention has a power clamping function, which can improve the clamping force on the tool shank, make the clamping reliable, and is suitable for clamping of various drilling tools.
  • FIG. 1 is a schematic structural view of the present invention, and is a front cross-sectional view of Embodiment 1.
  • Fig. 2 is a top sectional view of the first embodiment of the present invention.
  • FIG. 3 is a structural exploded view of Embodiment 1 of the present invention.
  • Fig. 4 is a front sectional view of a second embodiment of the present invention.
  • FIG. 5 is a top sectional view of Embodiment 2 of the present invention.
  • FIG. 6 is a structural exploded view of Embodiment 2 of the present invention.
  • Fig. 7 is a front sectional view of Embodiment 3 of the present invention 8.
  • FIG. 8 is a structural exploded view of Embodiment 3 of the present invention.
  • Fig. 9 is a front sectional view of a fourth embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of an elastic impact member according to Embodiment 4 of the present invention.
  • FIG. 11 is a structural exploded view of Embodiment 4 of the present invention.
  • Fig. 12 is a front sectional view of a fifth embodiment of the present invention.
  • Fig. 13 is a plan view of Fig. 11 of the present invention.
  • FIG. 1 is an N + 1 PP structure diagram of the present invention, showing the implementation of "a parallel module structure based on a distributed structure and a parallel processing method thereof" using software to realize the prior art in a single machine environment. example. This is also a generalized structure for implementing PP in a single machine.
  • Embodiment 1 As shown in FIG. 1, FIG. 2, and FIG. 3, a power clamping drill chuck includes a drill body 1, a female sleeve 2, a female sleeve 3, a clamping jaw 4, an elastic impact member 5, and a rear sleeve. 6.
  • Rolling body 7, positioning sleeve 8, front sleeve 9, three clamping jaws 4 are respectively installed in the three equally divided inclined holes of the drill body 1, the thread 3 of the female thread and the clamping jaws 4 installed in the inclined holes of the drill body
  • the thread forms a threaded transmission.
  • the front sleeve 9 is fixedly connected to the drill body 1.
  • the female sleeve 2 is fixedly connected to the female sleeve 3 and extended backward.
  • the rear end has thousands of convex keys 2-1, and the rear sleeve 6 is set on the wire.
  • the rear part of the female sleeve 2 can be rotated with respect to the wire female sleeve and the drill body.
  • the rear face of the rear sleeve 6 has an incomplete annular hole 6-2, the inner face has several keys 6-1, and the rear part of the drill body 1 is fixedly connected to a
  • the positioning sleeve 8 positions the rear sleeve axially on the drill body.
  • a plurality of elastic impact members 5 are installed between the wire mother sleeve and the rear sleeve.
  • the elastic impact member has a plurality of elastic deformation portions 5-3 and a plurality of convex keys 5 -2.
  • the power clamping drill chuck When in use, the power clamping drill chuck is connected to the screw of the hand drill driving shaft through the rear screw hole, the positioning sleeve 8 is fixedly connected to the rear portion 1-1 of the drill body 1, and the rear sleeve 6 is on the upper shaft of the drill body 1. ⁇ directional.
  • the rear sleeve can rotate relative to the drill body 1 and the positioning sleeve 8.
  • the elastic impact member 5 has several elastic deformation portions 5-3 and several Male key 5-2. Both sides of the convex key 5-2 in the circumferential direction are inclined.
  • the silk mother sleeve 2 and the silk mother 3 are fixedly connected and extended rearward, and the rear end portion thereof has a plurality of convex keys 2-1, and both sides of the convex keys 2-1 are inclined along the circumferential direction.
  • the silk mother sleeve 2 also has a convex convex ridge 2-2 for restraining the rolling body 7 on the silk mother. Turn on the power switch of the electric drill, the electric drill drive shaft drives the drill body 1, the front sleeve 9, the positioning sleeve 8 And the jaw 4 and so on.
  • the female mother sleeve 2 drives The wire mother 3 generates a slight relative rotation with respect to the clamping jaw 4, which increases the clamping force of the clamping jaw 4 to the tool handle 104, and the impact force presses the convex key of the elastic impact member to retreat again, so that it is repeatedly impacted until the clamping jaw 4 is firmly ⁇ ⁇ caught tool handle 104.
  • the back cover After releasing the grip on the back cover 6, the back cover will rotate with the drill body, etc., and the work of force p can be performed.
  • the power clamping drill chuck includes a drill body 1, a female sleeve 2, a female sleeve 3, a jaw 4, an elastic impact member 55, a rear sleeve 6, a rolling body 7, a positioning sleeve 8, and a front sleeve 9.
  • the elastic impact member 55 is dish-shaped, and has a plurality of elastic deformation portions 55-2 and a plurality of downward convex keys 55-1.
  • the silk mother sleeve 2 is provided with a convex convex key 2-3.
  • the downward convex convex key 55-1 of the elastic impact member and the upward convex convex key 2-3 of the wire mother sleeve 2 are inclined surfaces on both sides in the circumferential direction.
  • the elastic impact member 55 is mounted on the key 6-1 of the rear sleeve through the groove 55-3, so that the elastic impact member 55 can slide up and down along the key 6-1 of the rear sleeve under the action of the elastic deformation portion 55-2.
  • the inclined surface of the convex key 55-1 of the elastic impact member 55 is in contact with the inclined surface of the convex key 2-3 of the wire mother sleeve 2.
  • the silk mother sleeve 2 and the silk mother 3 are blocked by the convex keys 2-3, and do not move with the elastic impact member 55 and the rear sleeve 6. .
  • the clamping jaw 4 and the wire mother 3 have relatively rotated, and through thread transmission, the clamping jaw 4 moves forward along the inclined hole 1-2 in the drill body 1 to clamp the tool shank 104.
  • the relative rotational resistance of the clamping jaw 4 and the wire mother 3 and the inclined surface of the male screw 2-3 of the female sleeve cover the inclined surface of the elastic impact member convex key 55-1
  • the pressure increases sharply, forcing the elastic deformation portion 55-2 of the elastic impact member 55 to elastically deform, the elastic impact member 55 withdraws backward, and the female sleeve convex key 2-3 and the elastic impact member convex key 55-1 slide relative to each other and come out of contact.
  • the elastic impact member 55 returns to its original position by the elasticity of the elastic deformation portion 55-2.
  • Silk The female sleeve 2 and the female sleeve 3 continue to rotate with the clamping claw 4 and the drill body 1, so that the female sleeve male key 2-3 hits the elastic impact member male key 55-1, and the female sleeve 2 is driven by the impact force.
  • the wire mother 3 and the clamping jaw 4 make a small relative rotation, which increases the clamping force of the clamping jaw 4 on the tool handle 104, and the impact force presses the convex key of the elastic impact member to retreat again. Under repeated repeated impacts, the clamping jaw 4 is fastened. Hold the tool handle 104 firmly.
  • Embodiment 3 The rear sleeve 6 and the drill body 1 of the power clamping drill chuck according to the present invention may further be provided with a positioning ring 10, and the positioning ring has several connection keys and connection holes.
  • the power clamping drill chuck includes a drill body 1, a female sleeve 2, a female sleeve 3, a clamping jaw 4, an elastic impact member 5, a rear sleeve 6, a rolling body 7, and a positioning sleeve 8. , Front cover 9, positioning ring 10, bearing 12.
  • the positioning ring 10 When the drill chuck is installed on the electric drill, the positioning ring 10 is first fixed on the ring 101 in the electric drill cup 103 with the screw 102, and the connection key 10-1 of the positioning ring is inserted into the annular hole 6 of the back sleeve 6 2. Connect the threaded hole at the back of the power clamping drill chuck to the screw of the hand drill drive shaft. Rotate the rear cover in the forward direction so that the reverse side wall of the annular hole 6-2 of the rear cover contacts the key 10-1 of the positioning ring. The elastic impact member 5 is mounted on the key 6-1 of the back sleeve through the fitting portion 5-1.
  • the inclined surface of the convex key 5-2 of the elastic impact member 5 is in contact with the inclined surface of the male key 2-1 of the wire mother sleeve. Since the back cover 6 is blocked by the connection key 10-1 of the positioning ring and cannot be rotated in the forward direction, the convex key 5-2 of the elastic impact member contacts the female key 2-1 of the female sleeve, so that the female sleeve 2 and the female sleeve 3 Nor can it be turned forward. Close the hand drill switch, so that the drive shaft of the hand drill drives the drill body 1, the gripper 4, and the front sleeve 9 to rotate together.
  • the thread of the jaw 4 and the thread of the female nut 3 form a thread transmission, and the jaw 4 moves forward along the inclined hole in the drill body 1 to clamp the tool shank 104.
  • the inclined surface of the male key 2-1 of the wire mother sleeve 2-1 has a sharp increase in the inclined surface pressure of the elastic key 5-2, forcing the elastic impact member 5 to deform elastically. Concession is made relative to the male key 2-1 of the silk mother sleeve, so that the silk mother sleeve 2 and the silk mother 3 rotate with the jaw 4 and the drill body 1.
  • the elastic impact member male key 5-2 After the female sleeve male key 2-1 passes the elastic impact member male key 5-2, the elastic impact member male key 5-2 returns to its original position under the effect of the elastic restoring force.
  • the wire mother sleeve 2 continues to rotate, so that the convex key 2-1 hits the elastic impact member convex key 5-2.
  • This impact force causes the mother wire 3 and the clamping jaw 4 to rotate relatively slightly, increasing the clamping jaw 4 pair of tools
  • the clamping force of the shank 104 and the impact force pressing the convex key of the elastic impact member to retreat again. Under such repeated repeated impacts, the clamping claw 4 firmly clamps the tool shank 104.
  • the above process is the process of clamping the tool.
  • the rear sleeve 6 needs to be rotated in the reverse direction, so that the connection key 10-1 of the positioning ring presses the elastic impact member 5 to deform and presses on the convex key 5-2 to ensure The male key 5-2 is not in contact with the male female key 2-1.
  • the silk mother sleeve 2 and the silk mother 3 can follow the drill body 1 And the jaw 4 rotates unhindered.
  • a bearing 12 is installed between the silk mother sleeve 2 and the rear sleeve 6 to ensure that the silk mother sleeve 2 can rotate flexibly at high speed.
  • Embodiment 4 As shown in FIG. 9 and FIG. 11, another type of power clamping drill chuck is basically the same as that in Embodiment 3, and the same parts are not described again.
  • the convex key 55-1 and the elastic deformation part 55-2 of the elastic impact member 55 adopt an end face arrangement structure, and the convex key 55-1 is convex downward, as shown in FIG.
  • the elastic impact member 55 also has cam curved surfaces 55-3 and 55-4 whose axis directions change.
  • the cam curved surface 55-3 or 55-4 is always in contact with the claw portion 6-3 of the rear sleeve key 6-1.
  • the convex keys 2-1 of the wire mother sleeve 2 are also arranged on the end surface and are convex upward.
  • a rolling body 13 is installed between the silk mother sleeve 2 and the rear sleeve 6.
  • the drive shaft of the hand drill needs to be reversed, and the male key 2-1 of the female sleeve hits the male key 55-1 of the elastic impact member, so that the female nut 3 and the clamping jaw 4 rotate in the opposite direction and loosen the tool. .
  • the rear sleeve 6 needs to be reversed so that the claw portion 6-3 of the rear sleeve key is located at 55-4 of the cam surface of the elastic impact member, so that the convex impact key 55-1 of the elastic impact member and The convex keys 2-1 of the wire mother sleeve 2 are completely disengaged, so that the wire mother sleeve 2, the wire mother 3, and the drill body 1 and the clamping jaw 4 rotate synchronously without obstruction.
  • the operation mode is the same as that of the third embodiment shown in FIG. 7 and FIG. 8.
  • Embodiment 5 The embodiment shown in FIG. 12 and FIG.
  • 13 includes a drill body 1, a female sleeve 2, a female sleeve 3, a jaw 4, a rolling body 7, a front sleeve 9, and a convex key on the rear end surface of the female sleeve 2. 2-3 can be clamped with the impact convex key in the specially designed hand drill to clamp the tool.

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

Description

动力夹紧钻夹头
技术领域
本发明涉及一种钻具夹紧装置， 具体地说是一种动力夹紧钻夹头。 背景技术 我们知道， 现有手紧钻夹头一般由钻体、 夹爪、 丝母、 丝母套、 轴承、 前套、 后套组成。 三个夹爪分别安装在钻体的三个等分斜孔内， 丝母安装在钻 体的丝母槽内， 丝母的螺纹与夹爪的螺纹形成螺纹传动机构， 丝母套与丝母固 定连接， 前套与丝母或丝母套键连接， 后套与钻体固定连接， 钻体后部有螺纹 孔或锥孔。 安装使用时， 钻体后部的螺紋孔与动力机具的传动轴螺杆连接， 传 动轴转动时驱动钻体带动三爪及所夹工具同步转动。 装夹工具时， 手握并相对 转动前套和后套， 使与前套键连接的丝母相对钻体中的夹爪转动， 经丝母和夹 爪的螺纹传动， 使夹爪在钻体的斜孔中向前移动而夹住工具柄。 若想更牢的夹 住工具柄， 必须手用力转动前后套。 由于人手的扭力有限， 因此手转动使钻夹 头产生的对工具柄的夹紧力偏低， 当工作阻力大时， 极易使所夹工具松脱。 专 利 US005988653A公开了一种夹具， 可以借助于电动工具的动力夹紧工具柄， 但结构过于复杂。 发明内容 本发明所要解决的技术问题是克服上述现有技术的不足， 提供一种构造 简单， 使用方便， 可实现动力夹紧， 夹紧可靠的动力夹紧钻夹头。 本发明解决上述技术问题采用的技术方案是： 一种动力夹紧钻夹头， 包 括钻体、 丝母、 夹爪、 前套、 后套、 丝母套、 滚动体， 三个夹爪分别安装在钻 体的三个等分斜孔内 , 丝母螺紋与安装在钻体斜孔中的夹爪螺纹形成螺纹传 动， 前套与钻体固定连接， 其特征是： 丝母套与丝母固定连接并向后延长， 其 后端部有若干个凸键，后套套装在丝母套后部，并可以相对丝母套和钻体转动， 后套后端面有不完整环形孔，内端面有若干个键，钻体后部固定连接一定位套， 将后套在钻体上轴向定位， 丝母套和后套之间安装有若干个弹性冲击件， 弹性 冲击件有若干个弹性变形部和若干个凸键。 本发明动力夹紧钻夹头后套和钻体后侧还可设有一定位环， 定位环有若 干个连接键和连接孔。 丝母套外壁与后套内壁之间有减摩环或轴^^ 本发明采用上述结构， 钻夹头钻体与电钻的传动轴相连， 并可同步转动。 使用时， 电钻传动轴带动钻体和夹爪转动， 手握后套， 保持后套不转。 还可以 将一定位环安装在后套与电钻前端之间定位， 并固定在电钻前端。 定位环上有 键，约束后套只能在一定角度内相对定位环转动，在这一角度的两个极限位置 , 后套不能转动。 钻夹头的丝母与丝母套固定连接， 丝母套后端部的凸键斜面和 弹性冲击件的凸键斜面互相接触， 而弹性冲击件与后套相连， 从而阻挡丝母不 能转动， 这样夹爪和丝母就有了相对转动。 经丝母和夹爪的螺紋传动而使夹爪 闭合， 直至夹爪接触到所要夹持的工具柄。 夹爪接触并夹住工具柄后， 丝母和 夹爪螺纹传动阻力急剧增大，丝母套后端面凸键斜面和弹性冲击件凸键斜面相 互挤压，迫使弹性冲击件克服弹性变形部的弹性力而沿凸键斜面运动至两凸键 顶部接触， 又相对滑动脱开接触， 使丝母和夹爪同步转动。 在手电钻传动轴转 动力矩的驱动下， 钻体、 夹爪、丝母和丝母套与手电钻传动轴同步转动， 同时， 在弹性变形部弹性力作用下， 弹性冲击件又反向运动到原位， 使丝母套的凸键 斜面在转动中与弹性冲击件凸键斜面相撞。这个撞击力使丝母与夹爪产生微小 相对转动， 从而使夹爪更紧的夹持工具柄。 两凸键斜面撞击力又迫使弹性冲击 件克月艮弹性变形部的弹性力， 使两凸键再一次脱开。 手电钻传动轴继续转动， 则上述撞击过程不断重复， 从而使夹爪牢牢地夹紧工具柄。 若要卸下工具， 使 手电钻传动轴反向转动，丝母套凸键斜面与弹性冲击件凸件斜面在反向方向上 反复相撞、 脱开， 直至丝母与夹爪螺纹相对运动并松开所夹工具柄。 在不动的 后套和转动的丝母套之间安装有减摩环或轴承来保持丝母套随钻体转动灵活。 对照现有技术， 本发明具有动力夹紧功能， 可以提高对工具柄的夹紧力， 使夹 紧可靠， 适于各种钻具装夹。 附图说明 下面结合附图和实施例对本发明做进一步的描述。
图 1是本发明的结构示意图， 也是实施例 1的正剖视图。
图 2是本发明实施例 1的俯剖视图。
图 3是本发明实施例 1的结构分拆图。
图 4是本发明实施例 2的正剖视图。
图 5是本发明实施例 2的俯剖视图。 图 6是本发明实施例 2的结构分拆图。
图 7是本发明实施例 3的正剖视图 8
图 8是本发明实施例 3的结构分拆图。
图 9是本发明实施例 4的正剖视图。
图 10是本发明实施例 4的弹性冲击件结构示意图。
图 11是本发明实施例 4的结构分拆图。
图 12是本发明实施例 5的正剖视图。
图 13是本发明图 11的俯视图。
本发明上述附图中同样标号的部件， 表示该部件相同或等同。 具体实施方式 图 2A是本发明的 N+1并程结构图示出了在单机环境下， 用软件来实现 先有技术的 "一种基于分布结构的并行模块结构及其并行处理方法"的实施例。 这也是在单机中实现并程的一般化结构。 实施例 1 : 如图 1、 图 2、 图 3所示， 一种动力夹紧钻夹头， 包括钻体 1、 丝母套 2、 丝母 3、 夹爪 4、 弹性冲击件 5、 后套 6、 滚动体 7、 定位套 8、 前 套 9, 三个夹爪 4分别安装在钻体 1的三个等分斜孔内， 丝母 3螺纹与安装在 钻体斜孔中的夹爪 4螺紋形成螺紋传动， 前套 9与钻体 1固定连接， 丝母套 2 与丝母 3固定连接并向后延长， 其后端部有若千个凸键 2-1 , 后套 6套装在丝 母套 2后部， 并可以 目对丝母套和钻体转动， 后套 6后端面有不完整环形孔 6-2, 内端面有若干个键 6-1， 钻体 1后部固定连接一定位套 8, 将后套在钻体 上轴向定位， 丝母套和后套之间安装有若干个弹性冲击件 5， 弹性冲击件有若 干个弹性变形部 5-3和若干个凸键 5-2。 使用时， 将动力夹紧钻夹头通过后部的螺纹孔与手电钻传动轴的螺杆连 接， 定位套 8与钻体 1后部 1-1固定连接， 将后套 6在钻体 1上轴向定位。 后 套可以相对钻体 1和定位套 8转动。 后套 6内端面有若干个键 6-1 , 弹性冲击 件 5通过装配部 5-1安装在后套的键 6-1上， 弹性冲击件 5有若干个弹性变形 部 5-3和若干个凸键 5-2。 凸键 5-2沿圆周线方向两侧面为斜面。 丝母套 2与 丝母 3 固定连接并向后延长， 其后端部有若干个凸键 2-1 , 凸键 2-1沿圆周线 方向两侧面为斜面。 丝母套 2还有内凸的环形凸棱 2-2, 用以约束装载丝母上 的滚动体 7。 开启电钻电源开关， 电钻传动轴带动钻体 1、 前套 9、 定位套 8 和夹爪 4等转动。 当后套 6不受阻力约束时， 弹性冲击件 5的凸键 5-2的斜面 与丝母套 2的凸键 2-1的斜面接触， 后套会随丝母套 2转动。 当需要夹持工具 时， 用手轻握后套 6, 保持后套不动， 弹性冲击件 5、 丝母套 2和丝母 3不动， 钻体 1和夹爪 4随电钻传动轴转动， 这时， 夹爪 4与丝母 3有了相对转动， 通 过螺纹传动， 夹爪 4沿钻体 1中的斜孔 1-2向前移动至夹住工具柄 104。 当钻 体 1和夹爪 4随着手电钻传动轴继续转动时， 丝母套凸键 2-1的斜面对弹性冲 击件凸键 5-2的斜面压力急剧增大， 迫使弹性冲击件 5弹性变形， 并相对丝母 套凸键 2-1退让，丝母套凸键 2-1与弹性冲击件凸键 5-2相对滑动而脱离接触， 弹性冲击件 5靠本身弹性又恢复到原位。 丝母套 2和丝母 3随夹爪 4和钻体 1 转动， 使丝母套凸键 2-1撞击到弹性冲击件凸键 5-2上， 在撞击力作用下， 丝 母套 2带动丝母 3相对夹爪 4产生微小相对转动， 增加了夹爪 4对工具柄 104 的夹紧力， 撞击力压迫弹性冲击件的凸键再次退让， 如此不断反复撞击下， 直 至夹爪 4牢牢的夹住工具柄 104。 松开对后套 6的握持， 后套将随钻体等一同 转动， 即可进行力 p工作业。 若要松开所夹工具 104, 反向转动手电钻的传动轴， 带动钻体 1、 前套 9、 夹爪 4、 丝母 3和丝母套 2—同反向转动。 用手轻握后套 6, 丝母套凸键 2-1 与弹性冲击件凸键 5-2反向反复发生撞击， 在反复撞击下， 丝母套 2带动丝母 3与夹爪 4发生相对转动而松开工具 104。 实施例 2: 如图 4、 图 5、 图 6所示。 本实施例动力夹紧钻夹头， 包括钻 体 1、 丝母套 2、 丝母 3、 夹爪 4、 弹性冲击件 55、 后套 6、 滚动体 7、 定位套 8、 前套 9。 弹性冲击件 55为碟状， 并有若干个弹性变形部 55-2和若干个下凸 式凸键 55-1。 丝母套 2设有上凸式凸键 2-3。 弹性冲击件的下凸式凸键 55-1和 丝母套 2的上凸式凸键 2-3沿圆周线方向两侧面为斜面。 弹性冲击件 55通过 槽 55-3安装在后套的键 6-1上，使弹性冲击件 55在弹性变形部 55-2的作用下， 可以沿后套键 6-1上下滑动。 弹性冲击件 55的凸键 55-1的斜面与丝母套 2的 凸键 2-3的斜面接触。 当需要夹持工具时， 用手轻握后套 6, 保持后套不动， 丝母套 2和丝母 3在凸键 2-3的阻挡下， 与弹性冲击件 55和后套 6都不动。 这时， 夹爪 4与丝母 3有了相对转动 , 通过螺纹传动， 夹爪 4沿钻体 1中的斜 孔 1-2向前移动至夹住工具柄 104。 当钻体 1和夹爪 4随着手电钻传动轴继续 转动时， 夹爪 4与丝母 3的相对转动阻力和丝母套凸键 2-3的斜面对弹性冲击 件凸键 55-1的斜面压力急剧增大，迫使弹性冲击件 55的弹性变形部 55-2弹性 变形， 弹性冲击件 55向后退让， 丝母套凸键 2-3与弹性冲击件凸键 55-1相对 滑动而脱离接触， 弹性冲击件 55靠弹性变形部 55-2的弹性又恢复到原位。 丝 母套 2和丝母 3随夹爪 4和钻体 1继续转动， 使丝母套凸键 2-3撞击到弹性冲 击件凸键 55-1上， 在撞击力作用下， 丝母套 2带动丝母 3与夹爪 4产生 小 相对转动， 增加了夹爪 4对工具柄 104的夹紧力， 撞击力压迫弹性冲击件的凸 键再次退让， 在如 不断反复撞击下， 直至夹爪 4牢牢的夹住工具柄 104。 松 开对后套 6的握持， 后套将随钻体等一同转动。 即可进行加工作业。 若要松开所夹工具 104, 反向转动手电钻的传动轴， 带动钻体 1、 前套 9、 夹爪 4、 丝母 3和丝母套 2—同反向转动。 用手轻握后套 6, 丝母套凸键 2-3 与弹性冲击件凸键 55-1反向反复发生撞击， 在反复撞击下， 丝母套 2带动丝 母 3与夹爪 4发生相对转动而松开工具 104。 实施例 3:本发明动力夹紧钻夹头后套 6和钻体 1后侧还可设有一定位环 10, 定位环有若干个连接键和连接孔。 如图 7、 图 8所示， 动力夹紧钻夹头包 括有钻体 1、 丝母套 2、 丝母 3、 夹爪 4、 弹性冲击件 5、 后套 6、 滚动体 7、 定位套 8、 前套 9、 定位环 10、 轴承 12。 将钻夹头安装在手电钻上时， 先用螺 钉 102将定位环 10固定在手电钻罩杯 103内的环形件 101上， 而定位环的连 接键 10-1插入后套 6的环形孔 6-2里，再将动力夹紧钻夹头后部的螺紋孔与手 电钻传动轴的螺杆连接。 正向转动后套， 使后套的环形孔 6-2的反向侧壁与定 位环的键 10-1接触。 弹性冲击件 5通过装配部 5-1安装在后套的键 6-1上， 弹 性冲击件 5的凸键 5-2的斜面与丝母套的凸键 2-1的斜面接触。 由于后套 6被 定位环的连接键 10-1阻挡， 不能正向转动， 因此通过弹性冲击件凸键 5-2与丝 母套凸键 2-1接触， 使丝母套 2和丝母 3也不能正向转动。 闭合手电钻开关， 使手电钻传动轴带动钻体 1、 夹爪 4和前套 9一同转动。 夹爪 4螺紋和丝母 3 螺纹形成螺纹传动， 夹爪 4沿钻体 1中的斜孔向前移动至夹住工具柄 104。 钻 体 1和夹爪 4随着手电钻传动轴继续转动时， 丝母套凸键 2-1的斜面对弹性冲 击件凸键 5-2的斜面压力急剧增大， 迫使弹性冲击件 5弹性变形， 并相对丝母 套凸键 2-1退让，使丝母套 2和丝母 3随夹爪 4和钻体 1转动。丝母套凸键 2-1 越过弹性冲击件凸键 5-2后， 弹性冲击件凸键 5-2在弹性恢复力作用下， 又恢 复到原位。 丝母套 2继续转动， 而使凸键 2-1撞击到弹性冲击件凸键 5-2上， 这一撞击力使丝母 3与夹爪 4产生微小相对转动 , 增加了夹爪 4对工具柄 104 的夹紧力， 撞击力压迫弹性冲击件的凸键再次退让， 如此不断反复撞击下， 夹 爪 4牢牢的夹住工具柄 104。 以上过程是将工具夹紧的过程， 进行加工作业时， 需要反向转动后套 6, 使定位环的连接键 10-1压迫弹性冲击件 5变形，并压在凸键 5-2上，保证凸键 5-2与丝母套凸键 2-1不接触。 这种状态下， 丝母套 2和丝母 3可以随钻体 1 和夹爪 4无阻碍地转动。 丝母套 2和后套 6之间安装了轴承 12, 保证丝母套 2 可以灵活的高速转动。 若要松开所夹工具，先继续反向转动后套，使后套环形孔 6-2的正向侧壁 与定位环的连接键 10-1接触， 而这一状态解除了连接键 10-1对弹性冲击件凸 键 5-2的压迫， 弹性冲击件 5恢复原位。 反向转动手电钻的传动轴， 带动钻体 1、 前套 9、 夹爪 4、 丝母 3和丝母套 2—同反向转动， 丝母套凸键 2-1与弹性 变形件凸键 5-2发生撞击， 在反复撞击下， 丝母套 2带动丝母 3与夹爪 4发生 相对转动而松开工具 104。 实施例 4: 如图 9、 图 11所示的另一种动力夹紧钻夹头， 其组成结构与 实施例 3基本相同， 相同的部分不在重述。 其弹性冲击件 55的凸键 55-1和弹 性变形部 55-2采用端面布置结构， 凸键 55-1为下凸， 如图 10所示。 同时弹性 冲击件 55还有轴线方向变化的凸轮曲面 55-3和 55-4。 在弹性变形部 55-2的 弹性力作用下， 凸轮曲面 55-3或 55-4始终与后套键 6-1的爪部 6-3始终保持 接触。 丝母套 2的凸键 2-1也为端面布置， 并为上凸。 丝母套 2和后套 6之间 安装了滚动体 13。 当正向转动后套 6时， 后套键 6-1的爪部 6-3位于弹性冲击 件的凸轮曲面 55-3处位置， 弹性变形部 55-2的弹性力使弹性变形件 55前移， 而与丝母套 2接触。 在夹住工具柄后， 当丝母套 2与丝母 3、 钻体 1、 夹爪 4 一同随手电钻传动轴转动时， 丝母套的凸键 2-1的斜面就与弹性冲击件的凸键 55-1的斜面发生撞击，使与丝母套 2固定连接的丝母 3相对夹爪 4产生 4敫小相 对转动， 从而夹爪更紧的夹紧工具。 若卸下工具， 需反转手电钻的传动轴， 丝 母套凸键 2-1撞击弹性冲击件的凸键 55-1 ,从而丝母 3与夹爪 4产生反向相对 转动而松开工具。 若夹紧工具后， 进行加工作业， 则需反转后套 6, 使后套键 的爪部 6-3位于弹性冲击件凸轮曲面的 55-4处， 这样弹性冲击件凸键 55-1与 丝母套 2的凸键 2-1 , 完全脱离接触， 使丝母套 2、 丝母 3、 随钻体 1和夹爪 4 不受阻碍的同步转动。 工作方式与图 7、 图 8所示实施例 3相同。 实施例 5: 图 12、 图 13所示实施例， 包括钻体 1、 丝母套 2、 丝母 3、 夹 爪 4、 滚动体 7、 前套 9, 其丝母套 2后端面的凸键 2-3可以与专门特殊设计的 手电钻中的撞击凸键撞击来夹紧工具。

Claims

权 利 要 求 书
1. 一种动力夹紧钻夹头， 包括钻体、 丝母、 夹爪、 前套、 后套、 丝母套、 滚动体， 三个夹爪分别安装在钻体的三个等分斜孔内， 丝母螺纹与安装 在钻体斜孔中的夹爪螺纹形成螺纹传动， 前套与钻体固定连接， 其特征 是： 丝母套与丝母固定连接并向后延长， 其后端部有若干个凸键， 后套 套装在丝母套后部， 并可以相对丝母套和钻体转动， 后套后端面有不完 整环形孔， 内端面有若干个键， 钻体后部固定连接一定位套， 将后套在 钻体上轴向定位， 丝母套和后套之间安装有若干个弹性沖击件， 弹性冲 击件有若干个弹性变形部和若干个凸键。
2. 如权利要求 1所述的动力夹紧钻夹头， 其特征是： 后套和钻体后侧有一 定位环， 定位环有若干个连接键和连接孔。
3. 如权利要求 2所述的动力夹紧钻夹头， 其特征是： 丝母套外壁与后套内 壁之间有减摩环或轴 7|。
4. 如权利要求 1或 2所述的动力夹紧钻夹头， 其特征是丝母套后端部的凸 键沿圆周线方向两侧面是斜面。
5. 如权利要求 1或 2所述的动力夹紧钻钻夹头， 其特征是弹性冲击件安装 在后套的键上。
6. 如权利要求 1或 2所述的动力夹紧钻夹头， 其特征是弹性冲击件的凸键 沿圆周线方向的两侧面为斜面。
7. 如权利要求 1或 2所述的动力夹紧钻夹头， 其特征是弹性冲击件有沿钻 夹头轴线方向变化的凸轮曲面。
8. 如权利要求 1或 2所述的动力夹紧钻夹头， 其特征是弹性冲击件的弹性 变形部是与弹性冲击件分离的独立弹性变形元件。
9. 如权利要求 1或 2所述的动力夹紧钻夹头， 其特征是后套内端面的键有 爪部。
PCT/CN2003/000802 2002-09-20 2003-09-22 Mandrin de perceuse electrique WO2004026512A1 (fr)

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US20060091619A1 (en) 2006-05-04
EP1559491A4 (en) 2008-10-15
EP1559491B1 (en) 2012-11-07
CN100388994C (zh) 2008-05-21
CN1483541A (zh) 2004-03-24
AU2003272840A1 (en) 2004-04-08
EP1559491A1 (en) 2005-08-03
US7469908B2 (en) 2008-12-30

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