WO2007028287A1 - Mandrin porte-meche a autoverrouillage - Google Patents

Mandrin porte-meche a autoverrouillage Download PDF

Info

Publication number
WO2007028287A1
WO2007028287A1 PCT/CN2005/002349 CN2005002349W WO2007028287A1 WO 2007028287 A1 WO2007028287 A1 WO 2007028287A1 CN 2005002349 W CN2005002349 W CN 2005002349W WO 2007028287 A1 WO2007028287 A1 WO 2007028287A1
Authority
WO
WIPO (PCT)
Prior art keywords
nut
locking
sleeve
drill chuck
spring piece
Prior art date
Application number
PCT/CN2005/002349
Other languages
English (en)
Chinese (zh)
Inventor
Wenhua Zhou
Kailin Tan
Original Assignee
Zhejiang Sanou 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 Zhejiang Sanou Machinery Co., Ltd. filed Critical Zhejiang Sanou Machinery Co., Ltd.
Publication of WO2007028287A1 publication Critical patent/WO2007028287A1/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 utility model relates to a drill chuck, in particular to a drill chuck mounted on a machining device and an electric tool such as a drill press and an electric drill.
  • the hand drill chuck is provided with a drill body, a jaw, a nut, a front sleeve of the operating nut, and a rear sleeve which is not movable relative to the drill body in the axial direction and the circumferential direction, and the three jaws are respectively disposed on the uniform cloth.
  • the nut and the clamping jaw are threadedly connected, and the front sleeve is driven to rotate the nut to drive the clamping jaw into and out of the inclined hole to clamp or release the drilling tool, and the front sleeve operating nut
  • the method may be that the front sleeve is directly connected with the nut to drive the nut, or may be indirectly connected to the nut through one or several intermediate members, and the torque is transmitted to the nut through the intermediate member to drive the nut.
  • the disadvantage of this type of drill chuck is that under the impact load, the bit clamped by the jaw is easy to loosen or even fall off, and it is difficult to maintain the continuity of the processing.
  • the utility model adopts the following technical solutions: it comprises a drill body, a clamping jaw, a nut threadedly connected to the clamping jaw, a front sleeve of the axially defined operating nut, and a movement of the drill body in the axial and circumferential directions.
  • the rear sleeve further comprises an element with a spring piece, the element is coupled with the nut and rotates synchronously with the nut, the spring piece has a locking end, and the front end of the rear sleeve is provided with a locking one-way tooth lock of the spring piece.
  • the inner side wall of the front sleeve is provided with a configuration connected to the spring piece and a configuration for controlling the state in which the spring piece and the serration are engaged.
  • the utility model solves the self-locking problem of the drill chuck by locking the nut with the rear sleeve locking mechanism which can not move relative to the drill body in the axial direction and the circumferential direction, and the structure is more
  • the spring-loaded component can be connected to the nut by a loop-shaped component, and the loop-shaped component has an interference fit with the nut.
  • the spring-loaded component is provided with a mounting portion, and the mounting portion is clamped in the circle. Between the element and the nut. In this way, the nut and the spring-loaded component are easier to install and the torque transmission is more reliable.
  • the spring-loaded component can be mated to the nut in a variety of ways.
  • the upper end surface of the nut is provided with a mounting groove of a component with a spring piece, and the component with a spring piece is provided with a mounting portion that is coupled to the mounting groove.
  • the ball is provided with a ball at the rear of the nut, and the component with the spring piece is provided with a ring-shaped mounting portion.
  • the mounting portion is sandwiched between the nut and the ball, and a structure for transmitting the torque between the mounting portion and the nut is also provided.
  • Figure 1 is a half cross-sectional view showing the first embodiment of the present invention.
  • Figure 2 is a cross-sectional view taken along line A-A of Figure 1 in a non-self-locking state.
  • Fig. 3 is a cross-sectional view taken along line B-B of Fig. 1 in a non-self-locking state.
  • Figure 4 is a schematic exploded view of Figure 1.
  • FIG. 5 is a cross-sectional view of another front sleeve axial end limiting structure provided by the present invention.
  • Fig. 6 is an exploded perspective view showing a portion of the structure shown in Fig. 5.
  • FIG. 7 is an exploded view of Embodiment 2 of the present invention. detailed description
  • the utility model comprises a drill body 1, a clamping jaw 4, a nut 3 threadedly connected with the clamping jaw, a front sleeve 2 of an axially defined operating nut, a rear sleeve 6 which is movable in the axial direction and the circumferential direction, and which is movable relative to the drill body. Also included is an element 70 with a spring piece 7, which is mated with the nut and rotates in synchronism with the nut, the spring piece has a locking end 73, and the front end of the rear sleeve is provided with a ring of serrations that cooperate with the locking end one-way tooth lock of the spring piece 61.
  • the inner wall of the front sleeve is provided with a configuration connected with the spring piece and a configuration for controlling the state in which the spring piece and the serration are engaged.
  • the front end of the back sleeve is serrated 61
  • it can be realized by various structures, and it can be used.
  • the serration 61 In the shape of the front end surface of the back cover, it is also possible to form the serration 61, and the serpentine ring-shaped member is embedded on the front end surface of the rear cover. This embodiment adopts the former structure.
  • the one-way tooth lock fit can be understood as when the lock end of the spring piece falls into the serration of the saw ring, if the nut rotates in the direction of the clamp bit, the lock end of the spring piece and the saw tooth are not locked, but in the opposite direction, the spring The locking end and the serration are interlocked by each other and the nut is locked, and the nut cannot rotate in the opposite direction.
  • the element 70 with the spring piece not only transmits the torque when the front sleeve is operated, but also functions to cooperate with the serration to realize the self-locking of the drill chuck.
  • the element 70 can be provided on the front end face or the rear end face of the nut.
  • the connection with the nut is achieved by the looped element 8 , and the looped component is interference-fitted with the nut.
  • the spring-loaded component is provided with a mounting portion 74 , and the mounting portion is sandwiched between the looped component and the nut.
  • Reference numeral 32 is a groove for the surface of the nut that engages with the mounting portion 74.
  • the ring member 8 is provided with a through-groove 81, and the mounting portion 74 is simultaneously inserted into the slot 81. , in order to further limit the elastic locking element.
  • This type of connection is very convenient in assembly.
  • the ring-shaped element is tightly clamped on the outside of the nut. It can also function as a nut sleeve while installing the elastic locking element, so that the nut can be used in two halves. Assemble the structure to reduce the assembly difficulty of the drill chuck. Even the body of the component 80 itself can be shaped as a nut sleeve and interference fit with the nut.
  • the nut is mounted on the shoulder 100 in the middle of the drill body.
  • a ring of balls is arranged between the rear end surface of the nut and the step in the middle of the drill body 5
  • the configuration in which the inner wall of the front sleeve is connected to the spring piece and the configuration in which the spring piece and the saw tooth are matched may be directly formed on the inner wall of the front cover, or may be connected to the inner wall of the front cover by a part having a corresponding surface configuration, thereby The inner wall of the front cover has the above configuration. These configurations of the present embodiment are directly formed on the inner wall of the front cover.
  • the spring piece is provided with an outward positioning protrusion 72, and the inner wall of the front sleeve is connected with the spring piece in a configuration of a groove 23 engaged with the positioning protrusion 72 in the self-locking state and in the non-self-locking state and the positioning convex
  • the groove 22 is fitted.
  • the spring piece is also provided with a projection 71 that cooperates with the configuration of the front cover of the control spring piece and the saw ring.
  • the configuration of the front cover control spring piece and the saw ring is configured as a groove 21 that cooperates with the protrusion 71 and a front cover inner surface around the groove 21. In this way, the self-locking operation is the same as the clamping operation, and it becomes a continuation of the clamping operation. It is more in line with the usage habits, the operation is more convenient, and the hand feel is very good. Eye ij very P3 wall with turn The BS promotes the clamping force when the high drill chuck is clamped.
  • the axial limit of the front sleeve can be used in a variety of ways, such as a front cover limit at the front end that is interference-fitted with the drill body, and the rear end is limited by the parts of the drill chuck that are connected or abutted thereto.
  • FIG. 1 another front end axial limiting manner of the front sleeve is provided.
  • the axial limiting member is a mounting sleeve 10 provided with a rolling body 103 fixedly connected to the front end of the drill body, and the mounting sleeve includes an inner wall. 101 and the outer wall 102, the rolling body is disposed between the inner wall and the outer wall.
  • the front end of the front sleeve is blocked by the axial stop member, and at the rear, the front sleeve is restrained by the engagement of the loop member 8 with the step 24 of the inner wall of the front sleeve.
  • the inner wall of the front end of the front sleeve abuts against the outer wall 102, so that the front sleeve can be balanced and stabilized.
  • the rolling elements use a needle roller.
  • the mounting sleeve can be fixedly connected to the drill body by an interference fit of the inner wall 101 and the outer circumference of the front end of the drill body. Since the outer wall 102 can rotate on the surface of the needle roller, the limiting structure can also reduce the operation front sleeve. Friction when.
  • the axial fit of the front sleeve can also be achieved by the interference fit of the inner wall of the front sleeve and the outer wall 102 of the mounting sleeve.
  • the axial limiting member is an annular member 13, and the annular member and the front end of the drill body are provided with corresponding circular arc grooves 131, 14, in the circular arc groove Ball 12 is provided.
  • Reference numeral 132 is a hole in which the ball is mounted on the ring member.
  • the front end inner wall of the front sleeve is provided with an insert 27, and the insert 27 is interference-fitted with the annular member 13, thereby achieving axial limitation of the front sleeve, and the limit structure can also be used to reduce the operation.
  • the friction of the sleeve can also balance and stabilize the front sleeve.
  • the engagement of the ring element with the front sleeve may also be that the ring element only blocks the front sleeve at the front end of the front sleeve, and functions as an axial limit of the front end.
  • Fig. 1 it also has a protective cap for the front cover.
  • the protective cap encloses the outer circumference of the front end of the front cover to protect the front cover.
  • the protective cap 9 is interference-fitted with the drill body such that the protective cap 9 can also participate in axial restraint of the front sleeve by the connection of the protective cap 9 to the front sleeve.
  • FIG. 5 Another connection structure for the protective cap 9 and the drill body is illustrated in the figure, the protective cap being rotatably coupled to the front end of the drill body. Between the protective cap 9 and the front end of the drill body, a ring-shaped member 15 is fixedly connected to the protective cap. The annular member and the front end of the drill body are provided with corresponding circular arc grooves 151, 17, and balls 16 are arranged in the circular arc groove.
  • This embodiment demonstrates another way of connecting a spring-loaded component to a nut.
  • the ball 300 is provided at the rear of the nut 300, and the spring-loaded member is provided with a ring-shaped mounting portion 302.
  • the mounting portion is sandwiched between the nut and the ball, and a structure for transmitting a torque is provided between the mounting portion and the nut.
  • the structure that transmits the torque can be a keyway mating structure or an edge that transmits torque.
  • the ring-shaped mounting portion 302 is provided with a groove 303, and a nut sleeve 305 is connected to the outer portion of the nut.
  • the upper end of the nut sleeve is provided with a key 304 which cooperates with the groove 303.

Landscapes

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

Abstract

L'invention concerne un mandrin porte-mèche à autoverrouillage comprenant un corps de mandrin, une pluralité de mâchoires, un écrou fileté sur les mâchoires, un manchon avant à rotation limitée et un manchon arrière ne pouvant ni se déplacer dans un sens axial ni dans un sens périphérique par rapport au corps de mandrin. Le mandrin porte-mèche est doté d'un élément à lame de ressort, relié à l'écrou et susceptible de tourner avec celui-ci de manière synchrone. La lame de ressort comporte une extrémité de verrouillage, l'extrémité avant du manchon arrière étant dotée de dents de scie en cercle en contact avec l'extrémité de verrouillage de la lame de ressort dans un sens unique. La paroi interne du manchon avant est conçue de manière à être en raccord avec la lame de ressort et commander le verrouillage de celle-ci et des dents de scie. L'imbrication du manchon arrière et de l'écrou empêchant le déplacement du corps de mandrin dans le sens axial et périphérique permet de résoudre le problème lié à l'autoverrouillage du mandrin porte-mèche, sans compliquer la structure et tout en garantissant un agencement convivial.
PCT/CN2005/002349 2005-09-09 2005-12-28 Mandrin porte-meche a autoverrouillage WO2007028287A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNU200520014801XU CN2832373Y (zh) 2005-09-09 2005-09-09 新型锁紧钻夹头
CN200520014801.X 2005-09-09

Publications (1)

Publication Number Publication Date
WO2007028287A1 true WO2007028287A1 (fr) 2007-03-15

Family

ID=37196689

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2005/002349 WO2007028287A1 (fr) 2005-09-09 2005-12-28 Mandrin porte-meche a autoverrouillage

Country Status (2)

Country Link
CN (1) CN2832373Y (fr)
WO (1) WO2007028287A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107138774A (zh) * 2017-06-23 2017-09-08 浙江三鸥机械股份有限公司 一种自锁式钻夹头
WO2017211729A1 (fr) * 2016-06-09 2017-12-14 Syngenta Participations Ag Concentré émulsifiable de téfluthrine
US10099296B2 (en) * 2015-02-17 2018-10-16 Roehm Gmbh Drill chuck

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100999025A (zh) * 2006-12-30 2007-07-18 李新平 自锁式手紧钻夹头

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000301402A (ja) * 1999-04-20 2000-10-31 Murakkusu:Kk ツールチャック
CN1330992A (zh) * 2000-07-03 2002-01-16 罗姆股份有限公司 钻卡头
US6616147B2 (en) * 1998-08-14 2003-09-09 Power Tool Holders Incorporated Chuck with locking sleeve
CN2582790Y (zh) * 2002-11-25 2003-10-29 山东威达机械股份有限公司 自锁钻夹头
CN2602857Y (zh) * 2003-03-25 2004-02-11 山东威达机械股份有限公司 自锁式钻夹头
CN2604260Y (zh) * 2003-04-01 2004-02-25 台州市三鸥钻夹头制造有限公司 新型锁紧式钻夹头

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6616147B2 (en) * 1998-08-14 2003-09-09 Power Tool Holders Incorporated Chuck with locking sleeve
JP2000301402A (ja) * 1999-04-20 2000-10-31 Murakkusu:Kk ツールチャック
CN1330992A (zh) * 2000-07-03 2002-01-16 罗姆股份有限公司 钻卡头
CN2582790Y (zh) * 2002-11-25 2003-10-29 山东威达机械股份有限公司 自锁钻夹头
CN2602857Y (zh) * 2003-03-25 2004-02-11 山东威达机械股份有限公司 自锁式钻夹头
CN2604260Y (zh) * 2003-04-01 2004-02-25 台州市三鸥钻夹头制造有限公司 新型锁紧式钻夹头

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10099296B2 (en) * 2015-02-17 2018-10-16 Roehm Gmbh Drill chuck
WO2017211729A1 (fr) * 2016-06-09 2017-12-14 Syngenta Participations Ag Concentré émulsifiable de téfluthrine
US11382327B2 (en) 2016-06-09 2022-07-12 Syngenta Participations Ag Emulsifiable concentrate of tefluthrin
CN107138774A (zh) * 2017-06-23 2017-09-08 浙江三鸥机械股份有限公司 一种自锁式钻夹头
CN107138774B (zh) * 2017-06-23 2023-11-28 浙江三鸥机械股份有限公司 一种自锁式钻夹头

Also Published As

Publication number Publication date
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