WO2014082194A1 - Self-locking inner cone drill chuck - Google Patents

Self-locking inner cone drill chuck Download PDF

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Publication number
WO2014082194A1
WO2014082194A1 PCT/CN2012/085308 CN2012085308W WO2014082194A1 WO 2014082194 A1 WO2014082194 A1 WO 2014082194A1 CN 2012085308 W CN2012085308 W CN 2012085308W WO 2014082194 A1 WO2014082194 A1 WO 2014082194A1
Authority
WO
WIPO (PCT)
Prior art keywords
drill
self
rotating sleeve
locking
drill chuck
Prior art date
Application number
PCT/CN2012/085308
Other languages
French (fr)
Chinese (zh)
Inventor
周文华
赵强
Original Assignee
浙江三鸥机械股份有限公司
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 浙江三鸥机械股份有限公司 filed Critical 浙江三鸥机械股份有限公司
Priority to PCT/CN2012/085308 priority Critical patent/WO2014082194A1/en
Publication of WO2014082194A1 publication Critical patent/WO2014082194A1/en

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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
    • B23B31/1246—Jaws movement actuated by a bolt 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 utility model relates to an inner cone drill chuck. Background technique
  • the inner taper chuck is provided with a connecting body that is coupled with the driving machine, and the rear portion of the connecting body is provided with a connecting hole for connecting with the driving machine, and the front end of the connecting body is a tapered head and is in a cone
  • An external thread is disposed on the head
  • the drill chuck is further provided with a drill body rotatable relative to the connecting body, the drill body is sleeved outside the connecting body, and the drill body is provided with a jaw hole distributed around the axis of the connecting hole.
  • a jaw of the drill chuck is threadedly coupled to the external thread through the jaw bore, the threaded thread being a reverse thread.
  • the inner taper chuck Since the thread of the inner taper chuck is a reverse thread, the inner taper chuck has a self-tightening function, but in actual use, there is also a phenomenon of instantaneous self-tightening due to the reverse impact of the drill, so that The clamp is loosely clamped. Summary of the invention
  • the technical problem to be solved by the utility model is to provide a self-locking inner cone drill chuck to further ensure reliable clamping of the drilling tool by the drill chuck during work. Therefore, the utility model adopts the following technical solutions:
  • the utility model is provided with a connecting body which is matched with the driving machine, and the rear part of the connecting body is provided with a connecting hole for connecting with the driving machine, and the front end of the connecting body is tapered
  • the head is provided with an external thread on the conical head
  • the drill chuck is further provided with a drill body rotatable relative to the connecting body, the drill body is sleeved outside the connecting body, and the drill body is provided with a clip distributed around the axis of the connecting hole a claw hole, the jaw of the drill chuck is threadedly connected to the external thread through the jaw hole, the threaded thread is a left-hand thread;
  • the drill chuck is provided with a rotation coaxial with the connecting body
  • the sleeve is disposed outside the connecting
  • the spring piece is set a locking end and a protrusion engaged with the cam, the ratchet is arranged to move synchronously with the connecting body, the spring piece is arranged to move synchronously with the drilling body;
  • the drilling body has an indexing groove, the rotation
  • the sleeve is equipped with a key that cooperates with the indexing groove so that the rotating sleeve can rotate the drill body in both the forward and reverse directions, and the length of the indexing groove enables the rotating sleeve and the key to be rotated relative to the drill body An angle that causes the locking end of the spring leaf to transition between insertion into the ratchet and withdrawal from the ratchet.
  • the rotating sleeve is provided with a locking groove corresponding to the spring piece, and two rotation grooves are provided at an angle rotated by the rotating sleeve when inserted between the ratchet teeth and withdrawn from the ratchet teeth.
  • the spring piece is provided with a protrusion that cooperates with the positioning groove.
  • the present invention is provided with an inner sleeve that rotates synchronously with the drill body, and the spring piece is caught in a hole in the inner sleeve.
  • the utility model can also solve the above technical problem by adopting the following technical solutions:
  • the utility model is provided with a connecting body which is matched with the driving machine, and the rear part of the connecting body is provided with a connecting hole for connecting with the driving machine, and the front end of the connecting body a conical head and an external thread on the conical head,
  • the drill chuck further provided with a drill body rotatable relative to the connecting body, the drill body is sleeved outside the connecting body, and the drill body is provided with an axis surrounding the connecting hole a distributed jaw hole through which the jaw of the drill chuck is screwed to the external thread, the threaded thread is a left-hand thread;
  • the drill chuck is provided with the connector a rotating sleeve of the shaft, the rotating sleeve is outside the connecting body, and a self-locking structure is arranged between the rotating sleeve and the connecting body, the self-locking structure comprises a ring of ratchet teeth, a spring
  • the rotating sleeve is provided with a locking groove corresponding to the spring piece, and two rotation grooves are provided at an angle rotated by the rotating sleeve when inserted between the ratchet teeth and withdrawn from the ratchet teeth.
  • the spring piece is provided with a protrusion that cooperates with the positioning groove.
  • the spring piece is sleeved on the outside of the connecting body, behind the spring piece, the drill chuck
  • the middle sleeve is sleeved outside the tail of the connecting body, and the middle sleeve and the connecting body are connected together for synchronous movement, and the spring piece and the middle sleeve are connected together for synchronous movement.
  • the utility model has a self-locking function.
  • the rotary sleeve, the drill body and the connecting body of the drill chuck are in a locked state, and once the drilling tool is subjected to a reverse impact, the connecting body reversely rotates,
  • the lock mechanism can rotate synchronously with the rotating sleeve and the drill body, thereby avoiding the possibility of loose clamping of the drill chuck, further ensuring reliable clamping of the drill by the drill chuck during work; and when actively removing the drill Then, the self-locking state can be released by rotating the rotating sleeve in the reverse direction.
  • the connecting body is opened rearward from a front end thereof with a front hole section coaxial with the connecting hole, and the front hole section penetrates or passes through the connecting body section where the external thread is located.
  • the connecting body is opened rearward from the front end thereof with a groove extending through the wall of the front opening, and the depth of the groove reaches the external thread or passes through the external thread all the way.
  • the utility model has one or more of the grooves, and the plurality of grooves have the same depth. Thus, the utility model does not affect the self-tightening function of the inner cone drill chuck and the above self-locking function, and at the same time makes the operation of the inner cone drill chuck to loosen the drilling tool relatively easy.
  • the force of the inner cone drill chuck holding the drill is increasing due to the load change and the continuous action of the inertia.
  • the mating force of the thread connecting the external thread and the claw is getting larger and larger, due to the front hole of the connecting body
  • the groove has a slight elastic deformation property of the hole wall in the region where the external thread on the connecting body is located, and as the force is increased, the hole wall of the front hole segment is slightly deformed toward the center of the connecting body, so that the thread contact The surface is smaller than normal, and the contact surface is small and the friction between them is small, so that the inner cone drill chuck can loosen the operation of the drill.
  • Fig. 1 is a schematic view showing the outline of a first embodiment of the present invention.
  • Fig. 2 is a cross-sectional view taken along line A-A of Fig. 1 showing the main internal structure of the drill chuck.
  • Fig. 3 is an exploded view of the embodiment 1, showing the mounting sequence of the components of the drill chuck and the outer shape of the components.
  • Fig. 4 is a cross-sectional view taken along line BB of Fig. 1 when the embodiment 1 is in a self-locking state.
  • Fig. 5 is a cross-sectional view taken along line BB of Fig. 1 when the embodiment 1 is in a non-self-locking state.
  • Fig. 6 is a cross-sectional view taken along line C-C of Fig. 1 when the embodiment 1 is in a self-locking state.
  • Fig. 7 is a cross-sectional view taken along line C-C of Fig. 1 when the embodiment 1 is in a non-self-locking state.
  • Figure 8 is a three-dimensional perspective view of the rotary sleeve of the embodiment of Figure 1.
  • Figure 9 is a three-dimensional perspective view of the drill body in the embodiment of Figure 1.
  • Figure 10 is a three-dimensional perspective view of the inner sleeve of the embodiment of Figure 1.
  • Figure 11 is a cross-sectional view showing a second embodiment of the present invention.
  • Figure 12 is an exploded view of Embodiment 2.
  • Figure 13 is a cross-sectional view taken along line D-D of Figure 11 when the embodiment 2 is in a self-locking state.
  • Fig. 14 is a cross-sectional view taken along line E-E of Fig. 11 when the embodiment 2 is in the self-locking state.
  • Fig. 15 is a cross-sectional view taken along line F-F of Fig. 11 when the embodiment 2 is in the self-locking state.
  • Figure 16 is a three-dimensional perspective view of the rotary sleeve of the embodiment of Figure 11;
  • Figure 17 is a three-dimensional perspective view of the middle sleeve of the embodiment shown in Figure 11.
  • Figure 18 is a three-dimensional perspective view of the spring piece in the embodiment of Figure 11.
  • Figure 19 is a three-dimensional perspective view of the ring gear of the embodiment shown in Figure 11. detailed description
  • Embodiment 1 Referring to Figures 1-10.
  • the utility model is provided with a connecting body 1 which is coupled with a driving machine.
  • the rear part of the connecting body 1 is provided with a connecting hole 11 for connecting with a driving machine.
  • the front end of the connecting body is a conical head and is arranged on the conical head.
  • the drill chuck is further provided with a drill body 2 rotatable relative to the connecting body 1, the drill body 2 is sleeved outside the connecting body 1, and the drill body 2 is provided with a jaw distributed around the axis of the connecting hole a hole 23, the jaw 4 of the drill chuck is threadedly connected to the external thread 16 through the jaw hole 23, the threaded thread is a left-hand thread;
  • the drill chuck is provided with the connector a rotating sleeve 3 of the shaft, the rotating sleeve 3 is outside the connecting body 1, and a self-locking structure is arranged between the rotating sleeve and the connecting body, the self-locking structure comprises a ring of ratchet teeth 15, a spring piece 6, and is arranged a cam on the rotating sleeve that controls the working of the spring piece, the spring piece is provided with a locking end 62 and a cam-fitted projection 61, the ratchet is arranged to move synchronously with the connecting body,
  • the ratchet teeth 15 are directly formed on the connecting body 1, and the ratchet teeth can also be formed as a ring gear and fixed to the connecting body 1.
  • the cam may be formed directly on the inner surface of the rotating sleeve, and a cam surface 32 of the cam is formed by a section of the inner surface of the rotating sleeve.
  • the locking sleeve is provided with a corresponding spring leaf, and the locking end is provided with two positioning grooves 33, 34 when the locking sleeve is inserted between the ratchet teeth and the two teeth are withdrawn from the ratchet.
  • the spring piece is provided with a projection 63 that cooperates with the positioning groove.
  • the utility model is provided with an inner sleeve 8 which rotates synchronously with the drill body, and is connected with the groove 26 on the drill body 2 through the key 83, and the inner sleeve 8 and the drill body 2 are synchronously rotated, and the spring piece passes through the convexity thereon. 61, 63 are stuck in the holes 81, 82 in the inner sleeve.
  • the drill body is connected to the inner sleeve 8 which rotates synchronously with the protrusion 8 of the spring piece.
  • the drill body has an indexing groove 25, and the rotating sleeve is provided with a key 31 matched with the indexing groove so that the rotating sleeve 3 can drive the drill body 2 to rotate in both the forward and reverse directions.
  • the connecting body is opened rearward from a front end thereof with a front hole section 12 coaxial with the connecting hole, and the front hole section 12 invades or passes through a connecting body section where the external thread 16 is located,
  • the connecting body opens rearwardly from its front end with a groove 13 extending through the wall of the front opening, the depth of the groove 13 reaching the external thread or continuing through the external thread.
  • the utility model can be provided with one or more of the grooves 13 as long as the wall of the front hole section 12 of the connecting body can be slightly deformed in the direction of the connection center under the action of the reaction force of the jaws, and the deformation belongs to The elastic deformation can be restored in time after the reaction force disappears.
  • the number of the plurality of slots 13 can be Is 2, 3, 4 or more.
  • the plurality of grooves 13 may be evenly distributed along the circumferential direction of the front hole portion 12, and the depths of the plurality of grooves 13 are preferably uniform.
  • Reference numeral 5 is a back cover that is fixed to the connecting body.
  • Reference numeral 41 is a thread on the jaw that engages with the outer thread 16.
  • Reference numeral 9 is a ball that axially positions the drill body and the connecting body. Embodiment 2, referring to Figures 11-19.
  • the self-locking structure comprises a ring of ratchet teeth 801, a spring piece 60, a cam working on the rotating sleeve and a control spring piece, the spring piece is provided with a locking end 602 and a protrusion 603 cooperating with the cam, the spine
  • the tooth 801 is arranged to move synchronously with the drill body 2
  • the spring piece 60 is arranged to move synchronously with the connecting body 1;
  • the drill body 2 has an indexing groove 25, and the rotating sleeve 3 is equipped with a rotating
  • the key 31 of the position groove 25 enables the rotating sleeve to rotate the drill body in both the forward and reverse directions, and the length of the indexing groove 25 enables the rotating sleeve 3 and the key 31 to be rotated relative to the drill body 2
  • the angle causes the locking end 602 of the spring leaf to transition between insertion of the ratchet teeth 801 and withdrawal from the ratchet teeth 801.
  • the locking sleeve is provided with a corresponding spring leaf, and the locking end is provided with two positioning grooves 33, 34 when the locking sleeve is inserted between the ratchet teeth and the two teeth are withdrawn from the ratchet.
  • the spring piece is provided with a protrusion 601 that cooperates with the positioning groove.
  • the one-circle ratchet 801 is formed on the inner surface of the ring member 80, and the ring member 80 is inserted into the groove 26 on the drill body by the key 802 to be connected and synchronized.
  • the spring piece 60 is sleeved on the connecting body 1 , and behind the spring piece 60 , the drill chuck is provided with a middle sleeve 10 which is sleeved outside the tail of the connecting body, and the middle sleeve and the connecting body are connected Synchronously moving together, the spring leaf 60 and the middle sleeve are coupled to move synchronously by the key 604 on the spring piece 60 and the slot 101 in the middle sleeve 10.
  • Reference numeral 92 is a ball between the spring piece 60 and the ring member 80.

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

Abstract

A self-locking inner cone drill chuck is provided with a connection body (1) matched with and connected to a drive machine. A connection hole (11) for connecting to the drive machine is arranged at a rear part of the connection body (1). A front end of the connection body (1) is a conical head and an external thread (16) is arranged on the conical head. The drill chuck is also provided with a drill body (2) that can rotate relatively to the connection body (1). The drill body (2) is sleeved on the connection body (1). Clamping jaw holes (23) distributed around an axis of the connection hole are arranged in the drill body (2). Clamping jaws (4) of the drill chunk pass through the clamping jaw holes (23) and are connected to the external thread (16) in a threaded way. A thread to which the thread connects is a left-handed thread. The drill chuck is provided with a rotary sleeve (3) coaxial with the connection body (1). The rotary sleeve (3) is located outside the drill body (1). A self-locking structure is arranged between the rotary sleeve (3) and the connection body (1). The self-locking structure comprises a ratchet (15), a leaf spring (6) and a cam arranged on the rotary sleeve (3) for controlling the spring to work. The leaf spring (6) is provided with a locking end (62) and a protrusion (61) matched with the cam. The ratchet (15) matches with the connection body (1) and moves synchronously with it. The leaf spring (6) matches with the drill body (2) and moves synchronously with it. A transposition groove (25) is arranged on the drill body (2). A key (31) matched with the transposition groove (25) is arranged on the rotary sleeve (3) to enable the rotary sleeve (3) to drive the drill body (2) to rotate in positive and negative directions. A length of the transposition groove (25) enables the rotary sleeve (3) and the key (31) to rotate by an angle relatively to the drill body (2), so that the locking end (62) of the leaf spring (6) switches between a state of being inserted into the ratchet (15) and a state of being retracted from the ratchet (15).

Description

自锁内锥钻夹头 技术领域  Self-locking inner cone drill chuck
本实用新型涉及内锥钻夹头。 背景技术  The utility model relates to an inner cone drill chuck. Background technique
现有技术中， 内锥钻夹头设有与驱动机器配合连接的连接体， 连接体的后部 设有用于与驱动机器连接的连接孔，所述连接体的前端为锥形头并在锥形头上设 置有外螺纹，所述钻夹头还设有可相对连接体转动的钻体， 所述钻体套在连接体 外，钻体中设有围绕连接孔轴线分布的夹爪孔， 所述钻夹头的夹爪穿过所述夹爪 孔与所述外螺纹螺纹连接，所述螺纹连接的螺纹为反向螺纹。 由于内锥钻夹头的 螺纹是反向螺纹， 使内锥钻夹头有自紧功能， 但在实际使用过中， 也有由于钻具 受反向冲击而出现瞬间自紧失效的现象出现， 使所夹钻具夹持松动。 发明内容  In the prior art, the inner taper chuck is provided with a connecting body that is coupled with the driving machine, and the rear portion of the connecting body is provided with a connecting hole for connecting with the driving machine, and the front end of the connecting body is a tapered head and is in a cone An external thread is disposed on the head, the drill chuck is further provided with a drill body rotatable relative to the connecting body, the drill body is sleeved outside the connecting body, and the drill body is provided with a jaw hole distributed around the axis of the connecting hole. A jaw of the drill chuck is threadedly coupled to the external thread through the jaw bore, the threaded thread being a reverse thread. Since the thread of the inner taper chuck is a reverse thread, the inner taper chuck has a self-tightening function, but in actual use, there is also a phenomenon of instantaneous self-tightening due to the reverse impact of the drill, so that The clamp is loosely clamped. Summary of the invention
本实用新型所要解决的技术问题是提供一种自锁内锥钻夹头，以进一步确保 工作中钻夹头对钻具的可靠夹持。 为此， 本实用新型采用以下技术方案： 本实用 新型设有与驱动机器配合连接的连接体，连接体的后部设有用于与驱动机器连接 的连接孔，所述连接体的前端为锥形头并在锥形头上设置有外螺纹， 所述钻夹头 还设有可相对连接体转动的钻体，所述钻体套在连接体外， 钻体中设有围绕连接 孔轴线分布的夹爪孔， 所述钻夹头的夹爪穿过所述夹爪孔与所述外螺纹螺纹连 接， 所述螺纹连接的螺纹为左旋螺纹； 所述钻夹头设有与连接体同轴的旋转套， 所述旋转套处在连接体之外， 旋转套和连接体之间设有自锁结构， 所述自锁结构 包括一圈棘齿、 弹簧片、配在旋转套上的控制弹簧片工作的凸轮， 所述弹簧片设 有锁端和与凸轮配合的凸起，所述棘齿配在连接体上与其同步运动， 所述弹簧片 配在钻体上与其同步运动； 所述钻体上具有转位槽， 所述旋转套上被配有与转位 槽配合的键使得旋转套在正反两个方向上能带动钻体旋转，所述转位槽的长度使 得所述旋转套及所述键能够相对钻体转过一个角度，使所述弹簧片的锁端在*** 所述棘齿间及从所述棘齿中退出这两种状态间转换。 The technical problem to be solved by the utility model is to provide a self-locking inner cone drill chuck to further ensure reliable clamping of the drilling tool by the drill chuck during work. Therefore, the utility model adopts the following technical solutions: The utility model is provided with a connecting body which is matched with the driving machine, and the rear part of the connecting body is provided with a connecting hole for connecting with the driving machine, and the front end of the connecting body is tapered The head is provided with an external thread on the conical head, and the drill chuck is further provided with a drill body rotatable relative to the connecting body, the drill body is sleeved outside the connecting body, and the drill body is provided with a clip distributed around the axis of the connecting hole a claw hole, the jaw of the drill chuck is threadedly connected to the external thread through the jaw hole, the threaded thread is a left-hand thread; the drill chuck is provided with a rotation coaxial with the connecting body The sleeve is disposed outside the connecting body, and a self-locking structure is disposed between the rotating sleeve and the connecting body, and the self-locking structure comprises a ring of ratchet teeth, a spring piece, and a control spring piece disposed on the rotating sleeve. Cam, the spring piece is set a locking end and a protrusion engaged with the cam, the ratchet is arranged to move synchronously with the connecting body, the spring piece is arranged to move synchronously with the drilling body; the drilling body has an indexing groove, the rotation The sleeve is equipped with a key that cooperates with the indexing groove so that the rotating sleeve can rotate the drill body in both the forward and reverse directions, and the length of the indexing groove enables the rotating sleeve and the key to be rotated relative to the drill body An angle that causes the locking end of the spring leaf to transition between insertion into the ratchet and withdrawal from the ratchet.
进一步地，所述旋转套上设有对应弹簧片的锁端处在***所述棘齿间及从所 述棘齿中退出两种状态时旋转套所转的角度设有两个定位凹槽，所述弹簧片设有 与定位凹槽配合的凸起。  Further, the rotating sleeve is provided with a locking groove corresponding to the spring piece, and two rotation grooves are provided at an angle rotated by the rotating sleeve when inserted between the ratchet teeth and withdrawn from the ratchet teeth. The spring piece is provided with a protrusion that cooperates with the positioning groove.
进一步地，本实用新型设有与钻体同步转动的内套， 所述弹簧片卡在所述内 套上的孔中。  Further, the present invention is provided with an inner sleeve that rotates synchronously with the drill body, and the spring piece is caught in a hole in the inner sleeve.
本实用新型还可采用以下技术方案解决上述技术问题：本实用新型设有与驱 动机器配合连接的连接体，连接体的后部设有用于与驱动机器连接的连接孔， 所 述连接体的前端为锥形头并在锥形头上设置有外螺纹，所述钻夹头还设有可相对 连接体转动的钻体，所述钻体套在连接体外， 钻体中设有围绕连接孔轴线分布的 夹爪孔，所述钻夹头的夹爪穿过所述夹爪孔与所述外螺纹螺纹连接， 所述螺纹连 接的螺纹为左旋螺纹； 所述钻夹头设有与连接体同轴的旋转套， 所述旋转套处在 连接体之外， 旋转套和连接体之间设有自锁结构， 所述自锁结构包括一圈棘齿、 弹簧片、配在旋转套上的控制弹簧片工作的凸轮， 所述弹簧片设有锁端和与凸轮 配合的凸起，所述棘齿配在钻体上与其同步运动， 所述弹簧片配在连接体上与其 同步运动； 所述钻体上具有转位槽， 所述旋转套上被配有与转位槽配合的键使得 旋转套在正反两个方向上能带动钻体旋转，所述转位槽的长度使得所述旋转套及 所述键能够相对钻体转过一个角度，使所述弹簧片的锁端在***所述棘齿间及从 所述棘齿中退出这两种状态间转换。  The utility model can also solve the above technical problem by adopting the following technical solutions: the utility model is provided with a connecting body which is matched with the driving machine, and the rear part of the connecting body is provided with a connecting hole for connecting with the driving machine, and the front end of the connecting body a conical head and an external thread on the conical head, the drill chuck further provided with a drill body rotatable relative to the connecting body, the drill body is sleeved outside the connecting body, and the drill body is provided with an axis surrounding the connecting hole a distributed jaw hole through which the jaw of the drill chuck is screwed to the external thread, the threaded thread is a left-hand thread; the drill chuck is provided with the connector a rotating sleeve of the shaft, the rotating sleeve is outside the connecting body, and a self-locking structure is arranged between the rotating sleeve and the connecting body, the self-locking structure comprises a ring of ratchet teeth, a spring piece, and a control on the rotating sleeve a spring working cam, the spring piece is provided with a locking end and a protrusion that cooperates with the cam, the ratchet is arranged to move synchronously with the drill body, and the spring piece is arranged to move synchronously with the connecting body; Indexing on the drill body a slot, wherein the rotating sleeve is provided with a key that cooperates with the indexing groove such that the rotating sleeve can rotate the drill body in both the forward and reverse directions, and the length of the indexing groove enables the rotating sleeve and the key to An angle is rotated relative to the drill body to switch the locking end of the spring piece between insertion into the ratchet and withdrawal from the ratchet.
进一步地，所述旋转套上设有对应弹簧片的锁端处在***所述棘齿间及从所 述棘齿中退出两种状态时旋转套所转的角度设有两个定位凹槽，所述弹簧片设有 与定位凹槽配合的凸起。  Further, the rotating sleeve is provided with a locking groove corresponding to the spring piece, and two rotation grooves are provided at an angle rotated by the rotating sleeve when inserted between the ratchet teeth and withdrawn from the ratchet teeth. The spring piece is provided with a protrusion that cooperates with the positioning groove.
进一步地， 所述弹簧片呈圈状套在连接体外， 在弹簧片的后方， 所述钻夹头 设有套在连接体尾部外的中套，所述中套和连接体连接在一起同步运动， 所述弹 簧片和中套连接在一起同步运动。 Further, the spring piece is sleeved on the outside of the connecting body, behind the spring piece, the drill chuck The middle sleeve is sleeved outside the tail of the connecting body, and the middle sleeve and the connecting body are connected together for synchronous movement, and the spring piece and the middle sleeve are connected together for synchronous movement.
由于采用上述技术方案， 本实用新型具有自锁功能， 在工作中， 钻夹头的旋 转套、 钻体、 连接体处于锁定状态， 一旦钻具受到反向冲击， 连接体发生逆向转 动时， 自锁机构能带着旋转套、钻体同步逆向转动， 从而避免了钻夹头发生夹持 松动的可能，进一步确保工作中钻夹头对钻具的可靠夹持； 而当需要主动拆卸钻 具时， 则可通过反向转动旋转套而解除所述的自锁状态。  Due to the adoption of the above technical solution, the utility model has a self-locking function. In operation, the rotary sleeve, the drill body and the connecting body of the drill chuck are in a locked state, and once the drilling tool is subjected to a reverse impact, the connecting body reversely rotates, The lock mechanism can rotate synchronously with the rotating sleeve and the drill body, thereby avoiding the possibility of loose clamping of the drill chuck, further ensuring reliable clamping of the drill by the drill chuck during work; and when actively removing the drill Then, the self-locking state can be released by rotating the rotating sleeve in the reverse direction.
更进一步地， 所述连接体自其前端向后开设有与所述连接孔同轴的前部孔 段，所述前部孔段侵入或穿过所述外螺纹所在的连接体区段， 所述连接体自其前 端向后开有贯穿前部孔段孔壁的槽，所述槽的深度到达所述外螺纹中或向后一直 透过所述外螺纹。 本实用新型具有 1个或多个所述槽， 所述多个槽的深度一致。 这样，本实用新型在不影响内锥钻夹头的自紧功能及上述自锁功能的基础上， 同 时使内锥钻夹头松开钻具的操作比较轻松。当内锥钻夹头夹紧钻具处于使用过程 中时， 由于载荷变化和惯性的连续作用， 内锥钻夹头夹持钻具的力越来越大。在 本实用新型中， 当内锥钻夹头夹持钻具的力越来越大、连接体外螺纹和夹爪上的 螺纹的配合力也越来越大时，由于所述连接体前部孔段的槽使连接体上的外螺纹 所在区域的孔壁具有微小的弹性变形性能， 随着所述力的加大， 使前部孔段的孔 壁向连接体中心方向有微小变形， 这样螺纹接触面就比正常要小， 接触面小其相 互之间摩擦力小， 从而便于内锥钻夹头松开钻具的操作。 附图说明  Further, the connecting body is opened rearward from a front end thereof with a front hole section coaxial with the connecting hole, and the front hole section penetrates or passes through the connecting body section where the external thread is located. The connecting body is opened rearward from the front end thereof with a groove extending through the wall of the front opening, and the depth of the groove reaches the external thread or passes through the external thread all the way. The utility model has one or more of the grooves, and the plurality of grooves have the same depth. Thus, the utility model does not affect the self-tightening function of the inner cone drill chuck and the above self-locking function, and at the same time makes the operation of the inner cone drill chuck to loosen the drilling tool relatively easy. When the inner cone drill chuck clamps the drill in use, the force of the inner cone drill chuck holding the drill is increasing due to the load change and the continuous action of the inertia. In the present invention, when the force of the inner taper chuck clamping the drill is getting larger and larger, the mating force of the thread connecting the external thread and the claw is getting larger and larger, due to the front hole of the connecting body The groove has a slight elastic deformation property of the hole wall in the region where the external thread on the connecting body is located, and as the force is increased, the hole wall of the front hole segment is slightly deformed toward the center of the connecting body, so that the thread contact The surface is smaller than normal, and the contact surface is small and the friction between them is small, so that the inner cone drill chuck can loosen the operation of the drill. DRAWINGS
图 1为本实用新型所提供的实施例 1的外形示意图。  Fig. 1 is a schematic view showing the outline of a first embodiment of the present invention.
图 2为图 1的 A-A剖视图， 示出钻夹头的主要内部结构。  Fig. 2 is a cross-sectional view taken along line A-A of Fig. 1 showing the main internal structure of the drill chuck.
图 3为实施例 1的***视图，示出钻夹头的零部件的安装顺序和零部件的外 形。  Fig. 3 is an exploded view of the embodiment 1, showing the mounting sequence of the components of the drill chuck and the outer shape of the components.
图 4为当实施例 1处于自锁状态时， 图 1的 B-B剖视图。 图 5为当实施例 1处于非自锁状态时， 图 1的 B-B剖视图。 Fig. 4 is a cross-sectional view taken along line BB of Fig. 1 when the embodiment 1 is in a self-locking state. Fig. 5 is a cross-sectional view taken along line BB of Fig. 1 when the embodiment 1 is in a non-self-locking state.
图 6为当实施例 1处于自锁状态时， 图 1的 C-C剖视图。  Fig. 6 is a cross-sectional view taken along line C-C of Fig. 1 when the embodiment 1 is in a self-locking state.
图 7为当实施例 1处于非自锁状态时， 图 1的 C-C剖视图。  Fig. 7 is a cross-sectional view taken along line C-C of Fig. 1 when the embodiment 1 is in a non-self-locking state.
图 8为图 1所示实施例中旋转套的三维立体图。  Figure 8 is a three-dimensional perspective view of the rotary sleeve of the embodiment of Figure 1.
图 9为图 1所示实施例中钻体的三维立体图。  Figure 9 is a three-dimensional perspective view of the drill body in the embodiment of Figure 1.
图 10为图 1所示实施例中内套的三维立体图。  Figure 10 is a three-dimensional perspective view of the inner sleeve of the embodiment of Figure 1.
图 11为本实用新型所提供的实施例 2的剖视图。  Figure 11 is a cross-sectional view showing a second embodiment of the present invention.
图 12为实施例 2的***图。  Figure 12 is an exploded view of Embodiment 2.
图 13为当实施例 2处于自锁状态时， 图 11的 D-D剖视图。  Figure 13 is a cross-sectional view taken along line D-D of Figure 11 when the embodiment 2 is in a self-locking state.
图 14为当实施例 2处于自锁状态时， 图 11的 E-E剖视图。  Fig. 14 is a cross-sectional view taken along line E-E of Fig. 11 when the embodiment 2 is in the self-locking state.
图 15为当实施例 2处于自锁状态时， 图 11的 F-F剖视图。  Fig. 15 is a cross-sectional view taken along line F-F of Fig. 11 when the embodiment 2 is in the self-locking state.
图 16为图 11所示实施例中旋转套的三维立体图。  Figure 16 is a three-dimensional perspective view of the rotary sleeve of the embodiment of Figure 11;
图 17为图 11所示实施例中中套的三维立体图。  Figure 17 is a three-dimensional perspective view of the middle sleeve of the embodiment shown in Figure 11.
图 18为图 11所示实施例中弹簧片的三维立体图。  Figure 18 is a three-dimensional perspective view of the spring piece in the embodiment of Figure 11.
图 19为图 11所示实施例中齿圈的三维立体图。 具体实施方式  Figure 19 is a three-dimensional perspective view of the ring gear of the embodiment shown in Figure 11. detailed description
实施例 1， 参照附图 1-10。  Embodiment 1 Referring to Figures 1-10.
本实用新型设有与驱动机器配合连接的连接体 1，连接体 1的后部设有用于 与驱动机器连接的连接孔 11， 所述连接体的前端为锥形头并在锥形头上设置有 外螺纹 16， 所述钻夹头还设有可相对连接体 1转动的钻体 2， 所述钻体 2套在 连接体 1外， 钻体 2中设有围绕连接孔轴线分布的夹爪孔 23， 所述钻夹头的夹 爪 4穿过所述夹爪孔 23与所述外螺纹 16螺纹连接， 所述螺纹连接的螺纹为左 旋螺纹； 所述钻夹头设有与连接体同轴的旋转套 3， 所述旋转套 3处在连接体 1 之外， 旋转套和连接体之间设有自锁结构， 所述自锁结构包括一圈棘齿 15、 弹 簧片 6、 配在旋转套上的控制弹簧片工作的凸轮， 所述弹簧片设有锁端 62和与 凸轮配合的凸起 61， 所述棘齿配在连接体上与其同步运动， 所述弹簧片 6配在 钻体上与其同步运动； 所述钻体 2上具有转位槽 25， 所述旋转套 3上被配有与 转位槽 25配合的键 31使得旋转套在正反两个方向上能带动钻体旋转， 所述转 位槽 25的长度使得所述旋转套 3及所述键 31能够相对钻体转过一个角度， 使 所述弹簧片 6的锁端 62在***所述棘齿 15间及从所述棘齿中退出这两种状态 间转换。 The utility model is provided with a connecting body 1 which is coupled with a driving machine. The rear part of the connecting body 1 is provided with a connecting hole 11 for connecting with a driving machine. The front end of the connecting body is a conical head and is arranged on the conical head. There is an external thread 16, the drill chuck is further provided with a drill body 2 rotatable relative to the connecting body 1, the drill body 2 is sleeved outside the connecting body 1, and the drill body 2 is provided with a jaw distributed around the axis of the connecting hole a hole 23, the jaw 4 of the drill chuck is threadedly connected to the external thread 16 through the jaw hole 23, the threaded thread is a left-hand thread; the drill chuck is provided with the connector a rotating sleeve 3 of the shaft, the rotating sleeve 3 is outside the connecting body 1, and a self-locking structure is arranged between the rotating sleeve and the connecting body, the self-locking structure comprises a ring of ratchet teeth 15, a spring piece 6, and is arranged a cam on the rotating sleeve that controls the working of the spring piece, the spring piece is provided with a locking end 62 and a cam-fitted projection 61, the ratchet is arranged to move synchronously with the connecting body, the spring piece 6 is arranged to move synchronously with the drill body; the drill body 2 has an indexing groove 25, the rotating sleeve 3 is equipped with a key 31 matched with the indexing groove 25 so that the rotating sleeve can rotate the drill body in both the forward and reverse directions, and the length of the indexing groove 25 enables the rotating sleeve 3 and the key 31 to Rotating an angle relative to the drill body causes the locking end 62 of the spring leaf 6 to transition between insertion of the ratchet teeth 15 and withdrawal from the ratchet teeth.
在本实施例中所述棘齿 15直接成型在连接体 1上， 也可将棘齿作出齿圈并 固定在连接体 1上。  In the present embodiment, the ratchet teeth 15 are directly formed on the connecting body 1, and the ratchet teeth can also be formed as a ring gear and fixed to the connecting body 1.
所述凸轮可以直接成型在旋转套的内表面，由旋转套的内表面的一段形成所 述凸轮的凸轮面 32。  The cam may be formed directly on the inner surface of the rotating sleeve, and a cam surface 32 of the cam is formed by a section of the inner surface of the rotating sleeve.
所述旋转套上设有对应弹簧片的锁端处在***所述棘齿间及从所述棘齿中 退出两种状态时旋转套所转的角度设有两个定位凹槽 33、 34， 所述弹簧片设有 与定位凹槽配合的凸起 63。  The locking sleeve is provided with a corresponding spring leaf, and the locking end is provided with two positioning grooves 33, 34 when the locking sleeve is inserted between the ratchet teeth and the two teeth are withdrawn from the ratchet. The spring piece is provided with a projection 63 that cooperates with the positioning groove.
本实用新型设有与钻体同步转动的内套 8， 它通过键 83与钻体 2上的槽 26 实现连接并使内套 8和钻体 2同步转动， 所述弹簧片通过其上的凸起 61、 63卡 在所述内套上的孔 81、 82中。  The utility model is provided with an inner sleeve 8 which rotates synchronously with the drill body, and is connected with the groove 26 on the drill body 2 through the key 83, and the inner sleeve 8 and the drill body 2 are synchronously rotated, and the spring piece passes through the convexity thereon. 61, 63 are stuck in the holes 81, 82 in the inner sleeve.
所述钻体连接与其同步转动的内套 8， 所述弹簧片的所述凸起卡在内套上。 所述钻体上具有转位槽 25，所述旋转套上被配有与转位槽配合的键 31使得旋转 套 3在正反两个方向上能带动钻体 2旋转。  The drill body is connected to the inner sleeve 8 which rotates synchronously with the protrusion 8 of the spring piece. The drill body has an indexing groove 25, and the rotating sleeve is provided with a key 31 matched with the indexing groove so that the rotating sleeve 3 can drive the drill body 2 to rotate in both the forward and reverse directions.
所述连接体自其前端向后开设有与所述连接孔同轴的前部孔段 12， 所述前 部孔段 12侵入或穿过所述外螺纹 16所在的连接体区段， 所述连接体自其前端 向后开有贯穿前部孔段孔壁的槽 13，所述槽 13的深度到达所述外螺纹中或向后 一直透过所述外螺纹。  The connecting body is opened rearward from a front end thereof with a front hole section 12 coaxial with the connecting hole, and the front hole section 12 invades or passes through a connecting body section where the external thread 16 is located, The connecting body opens rearwardly from its front end with a groove 13 extending through the wall of the front opening, the depth of the groove 13 reaching the external thread or continuing through the external thread.
本实用新型可设置 1个或多个所述槽 13，只要使连接体的前部孔段 12孔壁 在受到夹爪对其反作用力的作用下能向连接中心方向微小变形，且该变形属于弹 性变形， 在所述反作用力消失后能够及时复原即可。 所述多个槽 13的数量可以 是 2、 3、 4个或更多个。 当本实用新型设置多个槽 13时， 所述多个槽 13可沿 前部孔段 12的周向均匀分布， 所述多个槽 13的深度最好一致。 The utility model can be provided with one or more of the grooves 13 as long as the wall of the front hole section 12 of the connecting body can be slightly deformed in the direction of the connection center under the action of the reaction force of the jaws, and the deformation belongs to The elastic deformation can be restored in time after the reaction force disappears. The number of the plurality of slots 13 can be Is 2, 3, 4 or more. When the plurality of grooves 13 are provided in the present invention, the plurality of grooves 13 may be evenly distributed along the circumferential direction of the front hole portion 12, and the depths of the plurality of grooves 13 are preferably uniform.
附图标号 5为与连接体固定在一起的后套。 附图标号 41为夹爪上的与外螺 纹 16配合的螺纹。  Reference numeral 5 is a back cover that is fixed to the connecting body. Reference numeral 41 is a thread on the jaw that engages with the outer thread 16.
附图标号 9为轴向定位钻体和连接体的滚珠。 实施例 2， 参照附图 11-19。  Reference numeral 9 is a ball that axially positions the drill body and the connecting body. Embodiment 2, referring to Figures 11-19.
本实施例的其它结构和实施例 1相同，只是自锁结构采用了另一种方式，在 图 11-19中， 附图标号与图 1-10相同的代表相同的含义。  The other structure of this embodiment is the same as that of Embodiment 1, except that the self-locking structure adopts another mode. In Figures 11-19, the same reference numerals as in Figures 1-10 represent the same meanings.
所述自锁结构包括一圈棘齿 801、 弹簧片 60、 配在旋转套上的控制弹簧片 工作的凸轮， 所述弹簧片设有锁端 602和与凸轮配合的凸起 603， 所述棘齿 801 配在钻体 2上与其同步运动， 所述弹簧片 60配在连接体 1上与其同步运动； 所 述钻体 2上具有转位槽 25， 所述旋转套 3上被配有与转位槽 25配合的键 31使 得旋转套在正反两个方向上能带动钻体旋转， 所述转位槽 25的长度使得所述旋 转套 3及所述键 31能够相对钻体 2转过一个角度， 使所述弹簧片的锁端 602在 ***所述棘齿 801间及从所述棘齿 801中退出这两种状态间转换。  The self-locking structure comprises a ring of ratchet teeth 801, a spring piece 60, a cam working on the rotating sleeve and a control spring piece, the spring piece is provided with a locking end 602 and a protrusion 603 cooperating with the cam, the spine The tooth 801 is arranged to move synchronously with the drill body 2, and the spring piece 60 is arranged to move synchronously with the connecting body 1; the drill body 2 has an indexing groove 25, and the rotating sleeve 3 is equipped with a rotating The key 31 of the position groove 25 enables the rotating sleeve to rotate the drill body in both the forward and reverse directions, and the length of the indexing groove 25 enables the rotating sleeve 3 and the key 31 to be rotated relative to the drill body 2 The angle causes the locking end 602 of the spring leaf to transition between insertion of the ratchet teeth 801 and withdrawal from the ratchet teeth 801.
所述旋转套上设有对应弹簧片的锁端处在***所述棘齿间及从所述棘齿中 退出两种状态时旋转套所转的角度设有两个定位凹槽 33、 34， 所述弹簧片设有 与定位凹槽配合的凸起 601。  The locking sleeve is provided with a corresponding spring leaf, and the locking end is provided with two positioning grooves 33, 34 when the locking sleeve is inserted between the ratchet teeth and the two teeth are withdrawn from the ratchet. The spring piece is provided with a protrusion 601 that cooperates with the positioning groove.
所述一圈棘齿 801成型在圈件 80内表面， 圈件 80通过键 802***到钻体 上的槽 26上而被连接并同步运动。  The one-circle ratchet 801 is formed on the inner surface of the ring member 80, and the ring member 80 is inserted into the groove 26 on the drill body by the key 802 to be connected and synchronized.
所述弹簧片 60呈圈状套在连接体 1夕卜， 在弹簧片 60的后方， 所述钻夹头 设有套在连接体尾部外的中套 10， 所述中套和连接体连接在一起同步运动， 所 述弹簧片 60和中套通过弹簧片 60上的键 604和中套 10上的槽 101连接在一起 同步运动。  The spring piece 60 is sleeved on the connecting body 1 , and behind the spring piece 60 , the drill chuck is provided with a middle sleeve 10 which is sleeved outside the tail of the connecting body, and the middle sleeve and the connecting body are connected Synchronously moving together, the spring leaf 60 and the middle sleeve are coupled to move synchronously by the key 604 on the spring piece 60 and the slot 101 in the middle sleeve 10.
附图标号 92为弹簧片 60和圈件 80间的滚珠。  Reference numeral 92 is a ball between the spring piece 60 and the ring member 80.

Claims

权利要求书 claims
1、 自锁内锥钻夹头， 设有与驱动机器配合连接的连接体， 连接体的后部设 有用于与驱动机器连接的连接孔，所述连接体的前端为锥形头并在锥形头上设置 有外螺纹，所述钻夹头还设有可相对连接体转动的钻体，所述钻体套在连接体外， 钻体中设有围绕连接孔轴线分布的夹爪孔，所述钻夹头的夹爪穿过所述夹爪孔与 所述外螺纹螺纹连接，所述螺纹连接的螺纹为左旋螺纹； 其特征在于所述钻夹头 设有与连接体同轴的旋转套，所述旋转套处在钻体之外， 旋转套和连接体之间设 有自锁结构， 所述自锁结构包括一圈棘齿、弹簧片、配在旋转套上的控制弹簧片 工作的凸轮，所述弹簧片设有锁端和与凸轮配合的凸起， 所述棘齿配在连接体上 与其同步运动， 所述弹簧片配在钻体上与其同步运动； 所述钻体上具有转位槽， 所述旋转套上被配有与转位槽配合的键使得旋转套在正反两个方向上能带动钻 体旋转， 所述转位槽的长度使得所述旋转套及所述键能够相对钻体转过一个角 度，使所述弹簧片的锁端在***所述棘齿间及从所述棘齿中退出这两种状态间转 换。 1. The self-locking inner cone drill chuck is provided with a connector that is connected to the driving machine. The rear of the connector is provided with a connection hole for connecting with the driving machine. The front end of the connector is a tapered head and the cone is The drill chuck is provided with external threads, and the drill chuck is also provided with a drill body that can rotate relative to the connecting body. The drill body is sleeved outside the connecting body. The drill body is provided with clamping holes distributed around the axis of the connecting hole, so The clamping jaw of the drill chuck is threadedly connected to the external thread through the clamping jaw hole, and the thread of the threaded connection is a left-hand thread; It is characterized in that the drill chuck is provided with a rotating sleeve coaxial with the connecting body. , the rotating sleeve is located outside the drill body, and a self-locking structure is provided between the rotating sleeve and the connecting body. The self-locking structure includes a ring of ratchet teeth, a spring leaf, and a control spring equipped on the rotating sleeve to control the operation of the spring leaf. Cam, the spring piece is provided with a locking end and a protrusion that matches the cam, the ratchet is equipped on the connecting body and moves synchronously with it, the spring piece is equipped on the drill body and moves synchronously with it; the drill body has Indexing slot, the rotating sleeve is equipped with a key that matches the indexing slot so that the rotating sleeve can drive the drill body to rotate in both forward and reverse directions, and the length of the indexing slot makes the rotating sleeve and the indexing slot The key can rotate at an angle relative to the drill body, so that the locking end of the spring leaf can be switched between two states of inserting between the ratchet teeth and withdrawing from the ratchet teeth.
2、 如权利要求 1所述的自锁内锥钻夹头， 其特征在于所述旋转套上设有对 应弹簧片的锁端处在***所述棘齿间及从所述棘齿中退出两种状态时旋转套所 转的角度设有两个定位凹槽， 所述弹簧片设有与定位凹槽配合的凸起。 2. The self-locking inner taper drill chuck according to claim 1, characterized in that the locking end of the rotating sleeve is provided with a corresponding spring piece at two positions: inserting between the ratchet teeth and withdrawing from the ratchet teeth. In this state, the rotation angle of the rotating sleeve is provided with two positioning grooves, and the spring piece is provided with a protrusion that matches the positioning grooves.
3、 如权利要求 1或 2所述的自锁内锥钻夹头， 其特征在于它设有与钻体同 步转动的内套， 所述弹簧片卡在所述内套上的孔中。 3. The self-locking inner taper drill chuck according to claim 1 or 2, characterized in that it is provided with an inner sleeve that rotates synchronously with the drill body, and the spring piece is stuck in the hole in the inner sleeve.
4、 如权利要求 1或 2所述的自锁内锥钻夹头， 其特征在于所述连接体自其 前端向后开设有与所述连接孔同轴的前部孔段，所述前部孔段侵入或穿过所述外 螺纹所在的连接体区段， 所述连接体自其前端向后开有贯穿前部孔段孔壁的槽， 所述槽的深度到达所述外螺纹中或向后一直透过所述外螺纹。 4. The self-locking inner taper drill chuck according to claim 1 or 2, characterized in that the connecting body is provided with a front hole section coaxial with the connecting hole from the front end thereof, and the front hole section is coaxial with the connecting hole. The hole section invades or passes through the connecting body section where the external thread is located, and the connecting body has a groove penetrating the hole wall of the front hole section backward from its front end, and the depth of the groove reaches the external thread or Go all the way back through the external thread.
5、如权利要求 4所述的自锁内锥钻夹头， 其特征在于它具有 1个或多个所 述槽， 所述多个槽的深度一致。 5. The self-locking inner taper drill chuck according to claim 4, characterized in that it has one or more grooves, and the depths of the plurality of grooves are consistent.
6、 自锁内锥钻夹头， 设有与驱动机器配合连接的连接体， 连接体的后部设 有用于与驱动机器连接的连接孔，所述连接体的前端为锥形头并在锥形头上设置 有外螺纹，所述钻夹头还设有可相对连接体转动的钻体，所述钻体套在连接体外， 钻体中设有围绕连接孔轴线分布的夹爪孔，所述钻夹头的夹爪穿过所述夹爪孔与 所述外螺纹螺纹连接，所述螺纹连接的螺纹为左旋螺纹； 其特征在于所述钻夹头 设有与连接体同轴的旋转套，所述旋转套处在钻体之外， 旋转套和连接体之间设 有自锁结构， 所述自锁结构包括一圈棘齿、弹簧片、配在旋转套上的控制弹簧片 工作的凸轮，所述弹簧片设有锁端和与凸轮配合的凸起， 所述棘齿配在钻体上与 其同步运动， 所述弹簧片配在连接体上与其同步运动； 所述钻体上具有转位槽， 所述旋转套上被配有与转位槽配合的键使得旋转套在正反两个方向上能带动钻 体旋转， 所述转位槽的长度使得所述旋转套及所述键能够相对钻体转过一个角 度，使所述弹簧片的锁端在***所述棘齿间及从所述棘齿中退出这两种状态间转 换。 6. The self-locking inner cone drill chuck is equipped with a connector that is connected to the driving machine. The rear part of the connector is provided with a connection hole for connecting with the driving machine. The front end of the connector is a tapered head and the cone is The drill chuck is provided with external threads, and the drill chuck is also provided with a drill body that can rotate relative to the connecting body. The drill body is sleeved outside the connecting body. The drill body is provided with clamping holes distributed around the axis of the connecting hole, so The clamping jaw of the drill chuck is threadedly connected to the external thread through the clamping jaw hole, and the thread of the threaded connection is a left-hand thread; It is characterized in that the drill chuck is provided with a rotating sleeve coaxial with the connecting body. , the rotating sleeve is located outside the drill body, and a self-locking structure is provided between the rotating sleeve and the connecting body. The self-locking structure includes a ring of ratchet teeth, a spring leaf, and a control spring equipped on the rotating sleeve to control the operation of the spring leaf. Cam, the spring piece is provided with a locking end and a protrusion that matches the cam, the ratchet is equipped on the drill body and moves synchronously with it, the spring piece is equipped on the connecting body and moves synchronously with it; the drill body has Indexing slot, the rotating sleeve is equipped with a key that matches the indexing slot so that the rotating sleeve can drive the drill body to rotate in both forward and reverse directions, and the length of the indexing slot makes the rotating sleeve and the indexing slot The key can rotate at an angle relative to the drill body, so that the locking end of the spring leaf can be switched between two states of inserting between the ratchet teeth and withdrawing from the ratchet teeth.
7、 如权利要求 6所述的自锁内锥钻夹头， 其特征在于所述旋转套上设有对 应弹簧片的锁端处在***所述棘齿间及从所述棘齿中退出两种状态时旋转套所 转的角度设有两个定位凹槽， 所述弹簧片设有与定位凹槽配合的凸起。 7. The self-locking inner taper drill chuck according to claim 6, wherein the rotating sleeve is provided with a locking end corresponding to a spring piece at two positions: inserting between the ratchet teeth and withdrawing from the ratchet teeth. In this state, the rotation angle of the rotating sleeve is provided with two positioning grooves, and the spring piece is provided with a protrusion that matches the positioning grooves.
8、 如权利要求 6或 7所述的自锁内锥钻夹头， 其特征在于所述弹簧片呈圈 状套在连接体外， 在弹簧片的后方， 所述钻夹头设有套在连接体尾部外的中套， 所述中套和连接体连接在一起同步运动， 所述弹簧片和中套连接在一起同步运 动。 8. The self-locking inner taper drill chuck according to claim 6 or 7, characterized in that the spring piece is loop-shaped and is sleeved outside the connecting body. Behind the spring piece, the drill chuck is provided with a spring piece that is sleeved on the connecting body. The middle sleeve outside the tail of the body, the middle sleeve and the connecting body are connected together to move synchronously, and the spring leaf and the middle sleeve are connected together to move synchronously.
9、 如权利要求 6或 7所述的自锁内锥钻夹头， 其特征在于所述连接体自其 前端向后开设有与所述连接孔同轴的前部孔段，所述前部孔段侵入或穿过所述外 螺纹所在的连接体区段， 所述连接体自其前端向后开有贯穿前部孔段孔壁的槽， 所述槽的深度到达所述外螺纹中或向后一直透过所述外螺纹。 9. The self-locking inner taper drill chuck according to claim 6 or 7, characterized in that the connecting body is provided with a front hole section coaxial with the connecting hole from the front end thereof, and the front hole section is coaxial with the connecting hole. The hole section invades or passes through the connecting body section where the external thread is located, and the connecting body has a groove penetrating the hole wall of the front hole section backward from its front end, and the depth of the groove reaches the external thread or Go all the way back through the external thread.
10、 如权利要求 9所述的自锁内锥钻夹头， 其特征在于它具有 1个或多个 所述槽， 所述多个槽的深度一致。 10. The self-locking inner taper drill chuck according to claim 9, characterized in that it has one or more grooves, and the depths of the plurality of grooves are consistent.
PCT/CN2012/085308 2012-11-27 2012-11-27 Self-locking inner cone drill chuck WO2014082194A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110944782A (en) * 2017-05-26 2020-03-31 莱维克龙有限公司 Self-locking hollow rotating shaft clamping mechanism
CN115343367A (en) * 2021-05-12 2022-11-15 中移(成都)信息通信科技有限公司 Clamping equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1390669A (en) * 2001-06-10 2003-01-15 山东威达机械股份有限公司 self-locking drill chuck
CN101081444A (en) * 2007-04-20 2007-12-05 浙江三鸥机械股份有限公司 Self-locking type clamping head of hand-locking drill
CN201091927Y (en) * 2007-05-30 2008-07-30 浙江三鸥机械股份有限公司 Self-locking hand-holding drill chuck
WO2011095725A1 (en) * 2010-02-08 2011-08-11 Etablissements Amyot Tool-holding mandrel for a rotating machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1390669A (en) * 2001-06-10 2003-01-15 山东威达机械股份有限公司 self-locking drill chuck
CN101081444A (en) * 2007-04-20 2007-12-05 浙江三鸥机械股份有限公司 Self-locking type clamping head of hand-locking drill
CN201091927Y (en) * 2007-05-30 2008-07-30 浙江三鸥机械股份有限公司 Self-locking hand-holding drill chuck
WO2011095725A1 (en) * 2010-02-08 2011-08-11 Etablissements Amyot Tool-holding mandrel for a rotating machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110944782A (en) * 2017-05-26 2020-03-31 莱维克龙有限公司 Self-locking hollow rotating shaft clamping mechanism
CN110944782B (en) * 2017-05-26 2021-11-02 莱维克龙有限公司 Self-locking hollow rotating shaft clamping mechanism
CN115343367A (en) * 2021-05-12 2022-11-15 中移(成都)信息通信科技有限公司 Clamping equipment

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