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WO2008144965A1 - Nouveau mandrin porte-foret auto-bloquant serré à la main - Google Patents

Nouveau mandrin porte-foret auto-bloquant serré à la main Download PDF

Info

Publication number
WO2008144965A1
WO2008144965A1 PCT/CN2007/001973 CN2007001973W WO2008144965A1 WO 2008144965 A1 WO2008144965 A1 WO 2008144965A1 CN 2007001973 W CN2007001973 W CN 2007001973W WO 2008144965 A1 WO2008144965 A1 WO 2008144965A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
locking
drill chuck
self
groove
Prior art date
Application number
PCT/CN2007/001973
Other languages
English (en)
Chinese (zh)
Inventor
Wenhua Zhou
Qiang Zhao
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 WO2008144965A1 publication Critical patent/WO2008144965A1/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 present invention relates to a drill chuck, and more particularly to a drill chuck mounted on a machining apparatus and a power tool such as a drill press or an electric drill. Background technique
  • the hand drill chuck is provided with a drill body, a jaw, a nut, a rotatable rotary sleeve and a rear sleeve, and the rotary sleeve is axially positioned, and the three jaws are respectively disposed on the drill body.
  • a threaded connection is made between the nut and the clamping jaw, and the rotation of the nut is driven by the rotating sleeve to drive the clamping jaws into and out of the inclined hole to clamp or release the drilling tool.
  • the technical problem to be solved by the present invention is to provide a novel self-locking hand-tight drill chuck which is not easy to loose and slip under the impact load.
  • the utility model adopts the following technical solutions: It comprises a drill body, a clamping jaw, an axially positioned rotating sleeve, a nut, a rear sleeve behind the rotating sleeve, the jaws are screwed with the nut, and the rear end of the rotating sleeve a groove for engaging in self-locking is provided, the drill chuck is provided with a loop-shaped element at a rear portion of the drill body that cannot rotate relative to the drill body, and the stirrup-shaped member is provided with a spring piece participating in self-locking, the spring The piece is provided with a self-locking portion that cooperates with the groove in the rear end of the rotating sleeve; the rear sleeve is rotatable in the circumferential direction, and the front end of the rear slee
  • Control configuration and control structure for controlling the non-locking engagement state of the spring piece and the groove in the rear end of the rotating sleeve; the front outer surface of the drill body is connected with a stationary sun gear, and the drill chuck is rotating A plurality of planet gears coupled to the nut and coupled to the sun gear are disposed between the sleeve and the drill body, and the inner surface of the sleeve is provided with teeth that cooperate with the planet gears. Due to the technical solution of the present invention, the structure of the invention is reasonable, and can be obtained by the cooperation of the rotating sleeve, the planetary gear and the nut.
  • the clamping force is higher, and the spring piece can be matched with the groove in the rear end of the rotating sleeve through the back sleeve control to realize the self-locking function, so that the bit clamped by the jaw is not easy even under the impact load. Loose and slipped off.
  • FIG. 1 is a half cross-sectional view showing an 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 B-B of Figure 1.
  • Figure 4 is an exploded view of Figure 1.
  • Figure 5 is a perspective view of the loop member of the embodiment of Figure 1.
  • Figure 6 is a perspective view of the back cover of the embodiment of Figure 1.
  • Figure 7 is a schematic view showing the cooperation of the nut and the planetary gear of the embodiment shown in Figure 1.
  • Figure 8 is a perspective view of the rotary sleeve of the embodiment of Figure 1. detailed description
  • the invention comprises a drill body 1, a clamping jaw 4, an axially positioned rotating sleeve 2, a nut 3, and a rear sleeve 6 at the rear of the rotating sleeve.
  • the clamping jaw is screwed with the nut, and the rear end of the rotating sleeve is provided with a groove 21 of the lock, the drill chuck is provided at the rear of the drill body with a loop-like element 5 that cannot rotate relative to the drill body, the loop-shaped element being provided with a spring piece 51 participating in self-locking, the spring piece being provided
  • the self-locking portion 53 is matched with the inner groove of the rear end of the rotating sleeve; the rear sleeve is circumferentially rotatable, and the front end of the rear sleeve is provided with a control spring piece and a groove in the rear end of the rotating sleeve.
  • Control structure 61 and control structure 62 for controlling the non-locking state of the groove in the rear end of the rotating sleeve and the rotating sleeve; the front outer surface of the drill body is connected with a stationary sun gear 11, the drill chuck Also disposed between the rotating sleeve and the drill body are a plurality of planet gears 7 coupled to the nut gear and coupled to the nut, the inner surface of the outer casing being provided with teeth 22 that cooperate with the planet gears.
  • the ring-shaped element 5 can be realized in such a way that it cannot rotate relative to the drill body: as shown in Fig. 5, the inner ring of the ring-shaped element 5 has a rotation stop edge 54, correspondingly, the drill body also has a rotation stop edge 54.
  • the self-locking portion 53 of the spring piece is an outward protrusion on the spring piece, and the groove 21 matched with the self-locking portion may be an arc-shaped groove as shown.
  • the self-locking portion of the spring piece may also be a lift of the end of the spring piece, and the groove 21 may be a toothed groove formed by the teeth.
  • the control configurations 62 and 61 employ grooves, as shown, the H-slot used in the control configuration 61 is between the groove bottom and the centerline of the drill chuck as compared to the groove used in the control configuration 62. The distance is even greater.
  • the direction of rotation of the clamping workpiece is a positive direction
  • the control configuration of the corresponding non-locking engagement state is in the opposite direction of the control configuration corresponding to the locking engagement state.
  • the ring-shaped member is provided with a key 52 having a rotation limit function which is lifted toward the rear sleeve, and the rear sleeve is provided with a limiting hole or groove 63 which cooperates with the key.
  • the cooperation of the key 52 and the limiting hole 63 can restrict the rotation of the rear sleeve, so that the rear sleeve can only rotate between the locking position and the non-locking position, which is advantageous for controlling the self-locking operation and the self-locking operation.
  • the key 52 is tilted in the radial direction of the drill chuck, it can also serve as an axial limit for the back sleeve.
  • the rear sleeve can be installed at the rear end of the drill body in the following manner:
  • the rear cover has a rear cover 64, and the rear cover is axially positioned on the step at the rear end of the drill body through the collar 93.
  • the key 52 provided by the loop member can be tilted toward the back cover of the back cover, and the limit hole 63 or the groove is provided on the back cover.
  • the sun gear 11 may be a ring of teeth directly formed on the surface of the drill body and connected to the drill body in an integral manner, and the sun gear 11 may also be a separate component connected to the drill body.
  • the central shaft 71 of the planetary gear 7 is connected to the nut, and thereby the connection of the planetary gear 7 and the nut is realized.
  • the nut is provided with a mounting groove 31 of the planetary gear and its central axis, The planetary gear and its central shaft are mounted thereto, and the mounting groove is vacant with respect to the portion of the gear such that the planetary gear can be coupled to the teeth 22 of the inner surface of the outer casing and to the sun gear.
  • the planetary gears can also be mounted on a carrier that is coupled to the nut and thereby connects the planetary gear 7 to the nut.
  • the nut may also be provided with teeth that cooperate with the planet gears to achieve connection with the planet gears.
  • the number of the planetary gears is three, and is uniformly disposed along the circumferential direction of the drill chuck.
  • Reference numeral 91 is a bearing
  • reference numeral 92 is a washer which is located between the nut and the nut step behind the nut.
  • Reference numeral 94 is a collar that is coupled to the drill body and defines a rotating sleeve at the front end. After rotating the sleeve The axial definition of the end can be achieved by the cooperation of the rotating sleeve with the nut or the back sleeve.
  • Reference numeral 95 is a nut sleeve.
  • the rotating sleeve When clamping the tool, the rotating sleeve is rotated clockwise from the front end of the drill chuck, and the nut is rotated to clamp the jaws; the side wall of the rear sleeve limiting hole is closely attached to the key 52, which is a counterclockwise rotation trend.
  • the self-locking portion 53 is in the recess 72 and is in a disengaged state from the recess 21, and the drill chuck is in a non-locking state.
  • the sleeve is rotated clockwise to the other side wall of the rear sleeve limiting hole to be in close contact with the key 52, and the self-locking portion 53 is turned into the groove 61 and falls into the groove 21, thereby realizing the self-locking lock. tight.
  • the nut does not loose relative to the drill body due to the engagement of the self-locking portion 53 and the recess 21, and the jaws maintain the clamped state of the tool.
  • the back sleeve is rotated counterclockwise to disengage the self-locking portion 53 from the recess 21, and the rotating sleeve can be rotated to release the jaws.

Landscapes

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

Abstract

L'invention concerne un nouveau mandrin porte-foret auto-bloquant serré à la main. Il comprend un corps de mandrin (1), une mâchoire (4), un manchon rotatif (2) fixé axialement, un écrou (3), un manchon arrière (6) formé derrière le manchon rotatif (2). La mâchoire (4) est vissée avec l'écrou (3), une rainure (21) est située dans l'extrémité arrière dudit manchon rotatif (2). Ledit mandrin porte-foret comprend un élément en forme de bague (5) au dos du corps de mandrin (1), ledit élément en forme de bague (5) comprenant une lame de ressort (51) qui a une partie auto-bloquante (53) pourvue de ladite rainure (21). Le manchon arrière (6) comprend un cadre de commande (61) et un cadre de commande (62), qui commandent respectivement la lame de ressort (51) verrouillant ou déverrouillant la lame de ressort (21), ladite surface avant du corps de mandrin (1) pourvu d'un engrenage fixement central. Ledit mandrin comprend plusieurs engranges planétaires (7) qui sont en prise avec l'engrenage central (11) entre le manchon rotatif (2) et le corps de mandrin (1). Ladite surface interne du manchon extérieur comprend des dents qui sont en prise avec les engrenages planétaires (7).
PCT/CN2007/001973 2007-05-30 2007-06-25 Nouveau mandrin porte-foret auto-bloquant serré à la main WO2008144965A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200720109834.1 2007-05-30
CN200720109834 2007-05-30

Publications (1)

Publication Number Publication Date
WO2008144965A1 true WO2008144965A1 (fr) 2008-12-04

Family

ID=39899887

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2007/001973 WO2008144965A1 (fr) 2007-05-30 2007-06-25 Nouveau mandrin porte-foret auto-bloquant serré à la main

Country Status (2)

Country Link
CN (1) CN201091927Y (fr)
WO (1) WO2008144965A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7722300B1 (en) * 2006-06-13 2010-05-25 Jerry Alvin Corcoran Chuck with internal geared tightening mechanism
DE202009005187U1 (de) * 2008-11-24 2009-10-29 Zhejiang Sanou Machinery Co. Ltd., Taizhou Schlüsselloses Bohrfutter mit Selbstverriegelung
WO2014082194A1 (fr) * 2012-11-27 2014-06-05 浙江三鸥机械股份有限公司 Mandrin de perçage conique interne à verrouillage automatique
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
CN109351995B (zh) * 2018-11-05 2024-07-30 台州三锦工业机器有限公司 手紧带锁钻夹头
CN115978074A (zh) * 2022-12-12 2023-04-18 河南建保盒子科技发展有限公司 一种可防止松动的螺丝

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10060635A1 (de) * 1999-12-06 2001-07-19 Power Tool Holders Inc Motorantrieb mit Getriebe-Werkzeughalter
US6913429B1 (en) * 2002-07-31 2005-07-05 Porter-Cable Corporation Tooless bit retaining assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10060635A1 (de) * 1999-12-06 2001-07-19 Power Tool Holders Inc Motorantrieb mit Getriebe-Werkzeughalter
US6913429B1 (en) * 2002-07-31 2005-07-05 Porter-Cable Corporation Tooless bit retaining assembly

Also Published As

Publication number Publication date
CN201091927Y (zh) 2008-07-30

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