WO2007036082A1 - Mandrin porte-mèche serré manuellement à verrouillage automatique - Google Patents

Mandrin porte-mèche serré manuellement à verrouillage automatique Download PDF

Info

Publication number
WO2007036082A1
WO2007036082A1 PCT/CN2005/002347 CN2005002347W WO2007036082A1 WO 2007036082 A1 WO2007036082 A1 WO 2007036082A1 CN 2005002347 W CN2005002347 W CN 2005002347W WO 2007036082 A1 WO2007036082 A1 WO 2007036082A1
Authority
WO
WIPO (PCT)
Prior art keywords
nut
locking
drill chuck
spring piece
self
Prior art date
Application number
PCT/CN2005/002347
Other languages
English (en)
Chinese (zh)
Inventor
Qiang Zhao
Original Assignee
Zhou, Wenhua
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 Zhou, Wenhua, Zhejiang Sanou Machinery Co., Ltd. filed Critical Zhou, Wenhua
Publication of WO2007036082A1 publication Critical patent/WO2007036082A1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2260/00—Details of constructional elements
    • B23B2260/136—Springs

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 rotating sleeve of a drill body, a jaw, a nut and an operating nut, and the three jaws are respectively disposed in three inclined holes uniformly distributed on the drill body, the nut and the jaw Threaded connection is adopted, and the rotating sleeve is driven to rotate the nut to drive the clamping jaw to enter or exit in the inclined hole to clamp or release the drilling tool.
  • the rotating sleeve can be operated by the rotating sleeve and the nut directly connected to drive the nut, or It is indirectly connected to the nut by one or several intermediate elements, and the torque is transmitted to the nut through the intermediate element 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 self-locking structure of the drill chuck is a spring-loaded spring piece and a ring of serrations provided on the surface of the drill body as a self-locking fitting, which is pressed by the inner wall of the rotating sleeve The piece makes the spring piece cooperate with the serrated one-way tooth lock to realize self-locking.
  • the impact load on the drill chuck may cause the spring piece to impact the inner wall of the rotating sleeve, and the long-term effect will affect the rotating sleeve.
  • the inner wall controls the spring piece and the saw tooth in a self-locking state, weakens the self-locking force and affects the self-locking function.
  • the utility model adopts the following technical solutions: it comprises a drill body, a jaw, and a jaw a threaded nut, a rotary sleeve of an axially defined operating nut, further comprising a spring-loaded element that is coupled to and rotates with the nut, and further provided with a component having a serrated inner wall that is rotatable relative to the drill body
  • the spring piece has a locking end engageable with the serrated one-way tooth lock, and the inner wall of the rotating sleeve is provided with a structure connected with the element with the spring piece.
  • the utility model uses the spring piece and the internal tooth element as the self-locking fitting, and the structure is more reasonable, and the spring piece and the sawtooth can be realized by the self-elastic force of the spring or by the cooperation of the drill body and the spring piece. Fitted to the tooth lock, the self-locking performance is stable and reliable.
  • An element with a serrated circle can be attached to the boss in the middle of the drill body.
  • This structure can be applied to both a single drill chuck and a double drill chuck, as well as to facilitate the placement of parts inside the drill chuck.
  • the element provided with a ring of serrations can also utilize the back sleeve which is not movable relative to the drill body in the axial direction and the circumferential direction.
  • the saw ring can be directly formed on the front end of the rear sleeve, and A part of the sleeve can also be formed as a single part, which can be connected to the front end of the back sleeve by interference or embedding.
  • 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 locked state.
  • Figure 3 is a cross-sectional view taken along line A-A of Figure 1 in a non-locked state.
  • Figure 4 is an exploded view of the connection structure of the nut and the element with the spring piece
  • Figure 5 is an exploded view of Figure 1'.
  • Fig. 6 is an exploded view of the drill chuck when the main body of the element with the spring piece is formed into a nut sleeve shape in the first embodiment, and the structure of Fig. 1 is used for the other structure.
  • Figure 7 is a half cross-sectional view showing the second embodiment.
  • Figure 8 is a schematic view showing the connection of the spring-loaded component and the nut of the third embodiment of the present invention. detailed description
  • the utility model comprises a drill body 1, a clamping jaw 4, a nut 3 threadedly connected to the clamping jaw, a rotating sleeve 2 of an axially defined operating nut, and a joint of the nut and the nut
  • the rotating element 80 with the spring piece 8 is further provided with an element 7 which is not provided with a serration 71 on the inner wall which is rotatable relative to the drill body.
  • the spring piece has a locking end 81 which can cooperate with the serrated one-way tooth lock, the inner wall of the rotating sleeve A structure is provided which is connected to the element with the spring piece.
  • the nut is disposed in the nut groove in the middle of the drill body, and the boss 11 in the middle portion of the drill body is axially restricted from the rear end as a part of the nut groove, and a ring of balls is arranged between the nut and the nut.
  • the arrangement of the element 7 utilizes the boss, and the element 7 is interference-connected to the outer circumference of the boss 11.
  • a one-way tooth lock fit can be understood as a spring piece 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 is not locked with the saw tooth, but in the opposite direction, the spring piece The lock end and the serration are locked by each other and the nut is locked, and the nut cannot rotate in the opposite direction.
  • a loop member 88 that is interference-fitted with a nut, the spring-loaded member being provided with a mounting portion 84 that is sandwiched between the loop member and the nut, reference numeral 32 being the mounting portion 84
  • the groove of the mating nut surface is such that the member 80 is coupled and rotated together with the nut.
  • the ring member 88 is provided with a through slot 89, and the mounting portion 84 is provided with a male key 86 inserted into the slot 89 for further restriction.
  • 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.
  • Fig. 6 shows the structure.
  • the other structure is the same as that shown in Figs.
  • the same reference numerals as in Figs. 1, 2, 3, and 4 denote the same parts.
  • the connection structure of the component 80 with the spring piece 8 and the nut can also adopt various other structures.
  • a mounting groove is provided on the nut, and the mounting portion of the component 80 is mounted in the mounting groove on the nut.
  • the component 80 It can also be provided on the upper or lower end of the nut.
  • the spring leaf is provided with an outwardly located projection 83, and the structure of the inner wall of the rotary sleeve that is coupled to the spring-loaded member includes a recess 21 that cooperates with the positioning projection of the spring leaf when in the non-self-locking state. In this way, it is possible to pass the coupling relationship between them during operation; to transmit torque to the nut.
  • the inner wall of the rotary sleeve can also be provided with a recess 22 which cooperates with the positioning projection of the spring piece in the self-locking state.
  • the spring piece is provided with an outward protrusion 82 at an end provided with a locking end, and the inner wall of the rotating sleeve is provided with the convex A groove 23 that cooperates.
  • the spring piece is provided with a locking end at one end with a bifurcation, and the outward projection is at a different branch from the locking end.
  • the rotation of the rotary sleeve causes the projection 82 to be ejected out of the groove, the lock end is disengaged from the serration, and the drill chuck is in a non-self-locking state. Since the locking end of the spring piece is moved into the serration by moving from the inside to the outside of the drill chuck, it is also possible to provide a corresponding concave and convex area on the portion of the drill body facing the spring piece to press the spring. The locking end of the piece maintains a one-way toothed lock with the serration and provides a space for the spring piece to be retracted when not self-locking.
  • the rotating sleeve is not required to press the locking end of the spring piece, and the rotating sleeve is not easily subjected to the impact and reaction force of the spring piece, thereby improving the performance stability and use of the self-locking structure of the drill head. Lifespan, and helps the rotating sleeve to maintain its center position while working.
  • the inner wall of the rotary sleeve is provided with an indexing groove 24, and the nut is provided with an indexing key 31 in the indexing groove 24. In this way, it is beneficial to increase the clamping force of the drill.
  • annular sleeve 9 on the outer circumference of the front end of the drill body, and a plurality of holes 92 are arranged in the sleeve wall, and a steel ball 91 is arranged in the hole.
  • the outer circle of the annular sleeve 9 is tightly fitted with the rotary sleeve, and the drill body corresponding to the hole on the sleeve wall
  • the circular groove 12 is opened.
  • the rotating sleeve is axially positioned by the rotatable annular sleeve, which makes the rotation of the rotating sleeve more flexible and helps to keep the rotating sleeve stable at its center during operation. .
  • the annular sleeve can also be replaced by an annular groove, and the steel ball as a rolling element can also be replaced by a needle roller.
  • the axial positioning of the rotating sleeve can also be used in other ways, for example, by fitting the end cap of the front end of the drill body with other parts inside the drill chuck, or by using the snap ring at the front end of the drill body to pivot the rotating sleeve. Positioning.
  • Reference numeral 6 is a back sleeve that is not movable relative to the drill body.
  • the protrusion 82 of the spring piece When in the non-self-locking state, as shown in FIG. 3, the protrusion 82 of the spring piece is placed on the inner wall of the rotating sleeve, the locking end 81 and the ring gear 7 are in the disengaged state, and the protrusion 83 is in the groove 21, when After placing the drill in the jaws, see the lower end of the drill chuck, turn the rotating sleeve clockwise, because the component 80 is mated with the nut and
  • the claws gradually gather and clamp the drill.
  • the rotating sleeve Continue to rotate the rotating sleeve.
  • the nut and the component 80 temporarily stop rotating.
  • the rotating sleeve rotates through a certain angle, as shown in FIG. 2, the rear wall of the indexing groove abuts against the indexing key 31 of the nut.
  • the projection 82 of the spring leaf falls into the recess 23, by which the spring leaf rests, and the locking end falls into the serration groove, and the projection 83 is in the recess 22.
  • the rotating sleeve Continue to rotate the rotating sleeve, and drive the nut and the component 80 to rotate.
  • the element 200 provided with a ring of serrations utilizes a rear sleeve that is incapable of moving relative to the drill body in both axial and circumferential directions, and the rear sleeve also serves as the element 200.
  • the saw ring is formed directly on the front end 201 of the back cover and becomes part of the back cover.
  • the other structure is the same as that of the first embodiment.
  • FIG 8 it corresponds to a cross-sectional view of the drill chuck at the position of Figure 1A-A.
  • This embodiment demonstrates the connection of another spring-loaded component to a nut.
  • the mounting groove 301 has a V shape
  • the mounting portion 304 also has a corresponding shape, so that the mounting portion 302 is caught in the groove 301, so that the spring piece-equipped member can be mounted.
  • the other structure is the same as that of the first embodiment.
  • reference numerals are assigned to the same parts as those of Figs. 1, 2, 3, and 4.

Landscapes

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

Abstract

La présente invention concerne un mandrin porte-mèche serré manuellement à verrouillage automatique. Le mandrin porte-mèche comprend un corps de mandrin, une pluralité de mâchoires, un écrou relié aux mâchoires par un filetage, un manchon rotatif limité de façon axiale et utilisé pour actionner l’écrou, et un élément qui comporte un ressort à lames qui est relié à l’écrou et peut tourner conjointement à l’écrou. Le mandrin porte-mèche est pourvu d’un cercle denté dans la paroi interne qui ne peut pas tourner conjointement à l’écrou. Le ressort à lames possède une extrémité de verrouillage qui est en prise avec une dent dans une direction unique. La paroi interne du manchon rotatif présente une construction telle qu’elle puisse être reliée à l’élément qui comporte le ressort à lames. La présente invention utilise le ressort à lames et l’élément denté interne en tant qu’éléments de mise en prise à verrouillage automatique, donc elle possède une structure raisonnable. En outre, une mise en prise du ressort à lames et de la dent dans une direction unique est réalisée par une force de ressort du ressort à lames sur lui-même ou par la mise en prise du corps de mandrin et du ressort à lames, donc les performances de verrouillage automatique sont stables et fiables.
PCT/CN2005/002347 2005-09-30 2005-12-28 Mandrin porte-mèche serré manuellement à verrouillage automatique WO2007036082A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200520015382.1 2005-09-30
CNU2005200153821U CN2832376Y (zh) 2005-09-30 2005-09-30 新型自锁手紧钻夹头

Publications (1)

Publication Number Publication Date
WO2007036082A1 true WO2007036082A1 (fr) 2007-04-05

Family

ID=37196692

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2005/002347 WO2007036082A1 (fr) 2005-09-30 2005-12-28 Mandrin porte-mèche serré manuellement à verrouillage automatique

Country Status (2)

Country Link
CN (1) CN2832376Y (fr)
WO (1) WO2007036082A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018105161A1 (fr) * 2016-12-06 2018-06-14 ユキワ精工株式会社 Dispositif mandrin

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108274051A (zh) * 2018-02-11 2018-07-13 浙江三鸥机械股份有限公司 一种自锁式钻夹头

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01289608A (ja) * 1988-05-17 1989-11-21 Sakamaki Seisakusho:Kk 工具用チャック
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
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
JPH01289608A (ja) * 1988-05-17 1989-11-21 Sakamaki Seisakusho:Kk 工具用チャック
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
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 (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018105161A1 (fr) * 2016-12-06 2018-06-14 ユキワ精工株式会社 Dispositif mandrin
JP2018089751A (ja) * 2016-12-06 2018-06-14 ユキワ精工株式会社 チャック装置
US11364546B2 (en) 2016-12-06 2022-06-21 Yukiwa Seiko Inc. Chuck apparatus

Also Published As

Publication number Publication date
CN2832376Y (zh) 2006-11-01

Similar Documents

Publication Publication Date Title
US10758987B2 (en) Chuck with locking device
US7503734B2 (en) Drill chuck actuator
US7503565B2 (en) Lockable drill chuck
US7296803B2 (en) Chuck
KR940000752B1 (ko) 회전공구용 키이레스 척
JP3553122B2 (ja) ドリルのような回転装置を装着するツールホルダーチャック
EP2349648B1 (fr) Douille a serrage rapide et ensemble retenue de clé hexagonale pour outil de pose d'éléments de fixation
US6260856B1 (en) Locking chuck
US5246317A (en) Quick-release arbor for hole saws
JPH0325282B2 (fr)
WO2010057397A1 (fr) Mandrin pour mèche à serrage manuel et auto-verrouillage
US6554289B1 (en) Anti-slip type electric drill chuck
US20110233878A1 (en) Hand-held power tool
WO2008092300A1 (fr) Mandrin de perçage à verrouillage
WO2006119685A1 (fr) Mandrin de perceuse a serrage manuel autobloquant
WO2007036082A1 (fr) Mandrin porte-mèche serré manuellement à verrouillage automatique
US20140265163A1 (en) Locking chuck
WO2007028287A1 (fr) Mandrin porte-meche a autoverrouillage
WO2008144965A1 (fr) Nouveau mandrin porte-foret auto-bloquant serré à la main
EP1779948A1 (fr) Mandrin porte-mèche auto-serrant à main
EP1380373A1 (fr) Ecrou de serrage et porte-outil avec écrou de serrage, et clé
WO2008064523A1 (fr) Mandrin de perceuse présentant une fonction anti-desserrage
EP1101553B1 (fr) Mandrin autobloquant
TWI816021B (zh) 具有鎖定裝置的夾頭
JPS637203A (ja) 締め付け具

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 05824025

Country of ref document: EP

Kind code of ref document: A1