WO1998040182A1 - Mandrin de serrage manuel - Google Patents

Mandrin de serrage manuel Download PDF

Info

Publication number
WO1998040182A1
WO1998040182A1 PCT/CN1997/000098 CN9700098W WO9840182A1 WO 1998040182 A1 WO1998040182 A1 WO 1998040182A1 CN 9700098 W CN9700098 W CN 9700098W WO 9840182 A1 WO9840182 A1 WO 9840182A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
mother
drill body
drill
wire
Prior art date
Application number
PCT/CN1997/000098
Other languages
English (en)
French (fr)
Inventor
Guimo Yang
Shengzhi Yang
Mingquan Cai
Lianhai Long
Kangjun Sun
Original Assignee
Shandong Weida Machine Tool Tools Group Corporation
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25744545&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1998040182(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from CN 97232403 external-priority patent/CN2291241Y/zh
Priority claimed from CN 97233807 external-priority patent/CN2302080Y/zh
Application filed by Shandong Weida Machine Tool Tools Group Corporation filed Critical Shandong Weida Machine Tool Tools Group Corporation
Priority to US09/381,139 priority Critical patent/US6247705B1/en
Priority to EP97943725A priority patent/EP1025940B1/en
Priority to DE69725185T priority patent/DE69725185T2/de
Publication of WO1998040182A1 publication Critical patent/WO1998040182A1/zh

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/1207—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
    • B23B31/1238—Jaws movement actuated by a nut with conical screw-thread
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2231/00—Details of chucks, toolholder shanks or tool shanks
    • B23B2231/38—Keyless chucks for hand tools
    • 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
    • B23B2231/44—Nose pieces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S279/00—Chucks or sockets
    • Y10S279/902—Keyless type socket
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17615—Obliquely guided reciprocating jaws
    • Y10T279/17623—Threaded sleeve and jaw
    • Y10T279/17632—Conical sleeve

Definitions

  • the present invention relates to a drilling tool clamping device, and in particular, the present invention relates to a hand-tight drill chuck.
  • the drill chucks of various drilling tools on the market generally include components such as drill bodies, jaws, wire mothers, bearings, bearing pads, front sleeves, rear sleeves, front sleeve covers or circlips.
  • the drill body is in an interference connection with the bearing pad, the rear sleeve, and the front cover.
  • the three clamping jaws are respectively installed in the three inclined holes of the drill body, and the wire mother is set in the wire mother groove of the drill body.
  • the upper threads form a threaded transmission.
  • the silk mother sleeve is interference-connected to the outside of the silk mother to make the split silk mother into one body.
  • the front sleeve is set on the silk mother sleeve.
  • the front end of the drill body is interference-connected with a front sleeve cover or a snap spring to prevent the front sleeve from moving in series.
  • the front cover is twisted by hand, which can drive the wire nut to rotate, and the three jaws of the drill chuck can be advanced or retracted in the inclined hole of the drill body by thread transmission, so that the three jaws are opened or closed to achieve loosening.
  • the silk nut ' is directly connected to the front sleeve to drive the silk nut to rotate by the front sleeve.
  • the key slot is matched with the silk mother, but milling the groove on the silk mother is extremely expensive.
  • the back end of the drill body and the back sleeve adopt an interference fit or rolling marks at the back end of the drill body, and the back sleeve is press-fitted. When using too much force or using it too many times, it is very easy to loosen the drill body and the back sleeve. Slipping.
  • the purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and to provide a hand-tight drill chuck with stable and reliable performance by rotating the front sleeve which can effectively drive the wire mother, and the rear sleeve and the back end of the drill body stably cooperate.
  • the wire mother sleeve has a bottom toward the front end of the drill body, and a plurality of key grooves are axially opened on the bottom.
  • the keys provided on the front sleeve can be inserted into the key grooves at the bottom of the wire mother sleeve.
  • the cylindrical guide member is next to several symmetrically-distributed parallel-axis grooves, and the inner wall of the rear sleeve is also provided with a cylindrical-shaped guide portion.
  • Several symmetrically-distributed keys protruding along the direction of the cylindrical axis are inserted into the grooves, so that The rear sleeve and the drill body cannot be fixed relative to each other to avoid slippage due to the looseness of the drill body and the rear sleeve.
  • the invention has the advantages of reasonable structure, convenient assembly, stable performance and reliable work, and is suitable for clamping devices of various hand-tight drilling tools.
  • the invention is further described below with reference to the drawings, wherein:
  • FIG. 1 is a schematic structural diagram of the present invention
  • FIG. 2 is a schematic diagram of the A-A direction
  • FIG. 3 is a schematic diagram in the direction of B-B in FIG. 1;
  • FIG. 4 is a partial schematic diagram of the rear end of the drill body in FIG. 1;
  • Fig. 5 is a left side view of Fig. 4,
  • a hand-tight drill chuck includes a drill body 1, a back cover 2, a decorative ring 3, a retaining spring 4, a bearing pad 5, a bearing 6, a wire mother 7, a wire mother sleeve 8, a clamping jaw 9,
  • the three clamping jaws 9 of the present invention are installed in three oblique holes on the drill body 1.
  • the outside of the clamping jaw 9 is provided with threads.
  • the wire mother 7 is installed in the wire mother groove of the drill body 1.
  • the silk mother 7 is divided into two bodies.
  • the inner wall of the lower end of the front sleeve 10 is provided with a semicircular groove along the circumference.
  • An elastic opening retaining spring 4 is installed in the semicircular groove.
  • the retaining spring 4 is blocked under the bearing pad 5 and blocked. There is a certain interval between the retaining spring 4 and the bearing pad 5, that is, it does not affect the rotation of the front cover 10, and does not allow the front cover 10 to move beyond the gap.
  • the outer wall of the lower end of the front cover 10 is covered with a nylon decorative ring 3, and the silk mother 7. The outer interference is connected with a silk female sleeve 9 to fasten the split silk female into a whole.
  • the female sleeve 8 has a bottom, the bottom of which is provided with a number of key grooves 12 ', the front sleeve 10 is provided with a number of keys 12 in the axial direction.
  • the key 12 on the front sleeve 10 can be inserted into the key groove 12 'of the wire sleeve 8 correspondingly, and the front sleeve 10 can be driven to drive the wire sleeve 8 and then the wire 7 It rotates with the rotation of the front sleeve 10, and further, through the thread cooperation of the thread mother 7 and the clamping jaw 9, the clamping jaw 9 advances or retracts in the inclined hole of the drill body 1, thereby opening or closing the three clamping jaws 9, To achieve the purpose of clamping or loosening the drill.
  • Fig. 3 shows the cooperation between the rear end of the drill body and the rear sleeve
  • Figs. 4 and 5 show the structure of the rear end of the drill body.
  • the outer wall of the rear end of the drill body 1 is provided with a cylindrical guide portion, and the rear sleeve 2 has a corresponding portion.
  • the cylindrical guide part can control the runout of the rear sleeve and the axial movement.
  • Several symmetrically distributed keys protrude in the axial direction of the cylindrical guide part.
  • the keys 11 of the rear sleeve are inserted into the grooves 1 1 ′ on the outer wall of the rear end of the drill body 1 so that The drill body and the rear sleeve are relatively fixed to prevent relative rotation between the two.

Landscapes

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

Description

手紧式钻夹头 本发明涉及一种钻具夹紧装置， 具体而言， 本发明涉及一种手紧 式钻夹头。
目前市场上的各种钻具的钻夹头一般包括钻体、 夹爪、 丝母、 轴 承、 轴承垫、 前套、 后套、 前套挡盖或卡簧等部件。 钻体与轴承垫、 后套、 前套挡盖过盈联接， 三个夹爪分别装设在钻体的三个斜孔内， 丝母设在钻体的丝母槽内， 其与夹爪上的螺纹形成螺纹传动机构。 丝 母套过盈联接于丝母外面， 使分体丝母成为一体， 前套装设于丝母套 上 在钻体前端过盈联接一前套挡盖或联接一卡簧， 防止前套串动。 使用时， 手拧前套， 可带动丝母转动， 通过螺纹传动使钻夹头的三个 夹爪在钻体的斜孔内前进或后退， 从而使三夹爪张开或闭合， 达到松 开或夹紧钻头的目的， 在上述结构中， 丝母 '与前套直接联接， 以由前 套带动丝母转动， 在使用过程中， 容易出现前套与丝母打滑的现象， 或是前套与丝母采用键槽配合， 但在丝母上铣槽费用极高。 此外， 钻 体后端与后套采用过盈配合或是在钻体后端滚痕、 后套压入配合， 使 用时用力过猛或使用次数过多时， 极易使钻体与后套松动产生打滑现 象。
本发明的目的就是为了克服上述现有技术的不足， 提供一种转动 前套能有效带动丝母， 后套与钻体后端稳定配合的、 性能稳定可靠的 手紧式钻夹头。
为实现本发明的上述目的， 所述丝母套朝向钻体前端具有一底 部， 底部上轴向开有若干键槽， 相应地设在前套上的键可插人丝母套 底部的所述键槽中， 以便转动前套时可带动丝母套， 进而带动丝母转 动， 使夹爪在钻体斜孔内前进或后退， 实现夹爪的张开或闭合； 所述 钻体后端外壁先有一圆柱状导向部件， 紧接着几个对称分布的平行轴 线的凹槽， 后套内壁同样设有圆柱状导向部分， 沿圆柱轴线方向伸出 几个对称分布的键插入所述凹槽内， 从而使后套与钻体固定 不能相 对转动， 避免了由于钻体与后套松动而产生的打滑现象。 '
本发明具有结构合理， 装配方便， 性能稳定， 工作可靠的优点， 它适于各种手紧钻具的夹紧装置。 下面结合附图对本发明做进一步的描述， 其中：
图 1是本发明的结构示意图；
图 2图 1的 A - A向示意图；
图 3是图 1的 B - B向示意图；
图 4是图 1中钻体后端的局部示意图；
图 5是图 4的左视图，
参见图 1 , 一种手紧式钻夹头， 其包括钻体 1 , 后套 2、装饰圈 3 、 挡簧 4、 轴承垫 5、 轴承 6、 丝母 7、 丝母套 8、 夹爪 9、 前套 10等 部件， 本发明三个夹爪 9装在钻体 1上的三个斜孔内， 夹爪 9的外侧 设有螺纹， 丝母 7装在钻体 1 的丝母槽内， 由于装配工艺的需要， 丝 母 7是分成两体的， 前套 10下端内壁沿圆周设有一半圆槽， 半圆槽内 装入一弹性开口挡簧 4 , 挡簧 4处在轴承垫 5下方而被挡住； 挡簧 4 与轴承垫 5 之间有一定间隔， 即不影响前套 10转动， 又不使前套 10 超过间隙窜动， 前套 10下端外壁套人一尼龙装饰圈 3 , 丝母 7的外侧 过盈联接一丝母套 9 , 将分体丝母紧固成一体。 参见图 2更清楚地示 出丝母套与前套的联接， 丝母套 8有一底部， 其底部轴向设有若干键 槽 12' , 前套 10 内轴向相应地设有若干个键 12 . 丝母套 8与前套 10 配合时， 前套 10上的键 12可相应地插入丝母套 8的键槽 12'内， 拧动 前套 10， 可带动丝母套 8 , 进而带动丝母 7随前套 10的转动而转动， 进而通过丝母 7与夹爪 9的螺纹配合， 使夹爪 9在钻体 1的斜孔内前 进或后退， 从而使三个夹爪 9张开或闭合， 达到夹紧或松开钻头的目 的。
图 3示出钻体后端与后套的配合， 图 4、 图 5示出钻体后端的结 构， 钻体 1后端外壁设有一段圆柱状导向部分， 后套 2上有与之相应 的圆柱状导向部分， 可控制后套跳动度以及轴向窜动， 在钻体 1后端 圆柱状导向部分之后开有几个对称分布平行于轴线的很深的凹槽 1 1 ' , 后套沿圆柱状导向部分轴线方向伸出几个对称分布的键， 在后套 与钻体后端联接时， 后套的键 1 1插入钻体 1后端外壁的凹槽 1 1 '内， 从而可使钻体与后套相对固定， 防止两者发生相对转动。

Claims

权利要求书
1.一种手紧式钻夹头， 其包括钻体、 夹爪、 丝母、 轴承、 轴承垫、 前套、 后套、 丝母套、 前套挡盖或卡簧等部件， 钻体与轴承垫过盈配 合， 夹爪分别装在钻体周围均匀分布的斜孔内， 丝母安装在钻体的丝 母槽内， 其与夹爪上的螺纹配合形成螺纹传动机构， 丝母套过盈联接 于丝母外， 使分体丝母成为一体， 丝母套外设有前套， 其特征在于： 所述丝母套 （ 8 ) 朝向钻夹头的前端具有一底部， 该底部上轴向开有 若干键槽 （ 12' ) , 相应地设在前套 （ 10 ) 上的键 （ 12 ) 可插入丝母 套底部的所述键槽 （ 12' ) 中， 以便当转动前套 （ 10 ) 时， 带动丝母 套 （ 8 ) 转动， 进而带动丝母 （ 9 ) 转动， 使夹爪 （ 9 ) 在钻体的斜 孔内前进或后退， 实现夹爪 （ 9 ) 的张开或闭合。
2.—种如权利要求 1 所述的手紧式钻夹头， 其特征在于： 所述钻 体后端设有一圆柱状导向部分， 随后开有几个对称分布平行轴线的凹 槽 （ 1 Γ ) , 在所述后套 （ 2 ) 内壁上有相应的圆柱状导向部分， 在钻 体后端与所述后套配合时， 后套圆柱部轴向伸出的相应几个对称分布 平行轴线的键 （ 1 1 ) 插入所述钻体后端的凹槽 （ 1 Γ ) 中， 使钻体与 后套相对固定，
3.—种如权利要求 1 所述的手紧式钻夹头， 其特征在于： 前套 ( 10 ) 下端外壁套人一尼龙装饰圈 （ 3 ) 。
PCT/CN1997/000098 1997-03-12 1997-10-06 Mandrin de serrage manuel WO1998040182A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US09/381,139 US6247705B1 (en) 1997-03-12 1997-10-06 Manual tightened chuck
EP97943725A EP1025940B1 (en) 1997-03-12 1997-10-06 Manual tightened chuck
DE69725185T DE69725185T2 (de) 1997-03-12 1997-10-06 Handbetätigtes futter

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN 97232403 CN2291241Y (zh) 1997-03-12 1997-03-12 手紧式钻夹头
CN97232403.8 1997-03-12
CN 97233807 CN2302080Y (zh) 1997-07-24 1997-07-24 钻夹头
CN97233807.1 1997-07-24

Publications (1)

Publication Number Publication Date
WO1998040182A1 true WO1998040182A1 (fr) 1998-09-17

Family

ID=25744545

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN1997/000098 WO1998040182A1 (fr) 1997-03-12 1997-10-06 Mandrin de serrage manuel

Country Status (4)

Country Link
US (1) US6247705B1 (zh)
EP (1) EP1025940B1 (zh)
DE (1) DE69725185T2 (zh)
WO (1) WO1998040182A1 (zh)

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CN2579576Y (zh) * 2002-08-16 2003-10-15 周文华 改良的手紧钻夹头
CN2578022Y (zh) * 2002-08-28 2003-10-08 周文华 一种改进的手紧钻夹头
JP4294945B2 (ja) * 2002-12-06 2009-07-15 ユキワ精工株式会社 チャック装置
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
US20060261563A1 (en) * 2003-03-25 2006-11-23 Guimo Yang Self-locking drill chuck
CN2633481Y (zh) * 2003-07-17 2004-08-18 山东威达机械股份有限公司 锁紧式钻夹头
US8961019B2 (en) 2011-05-10 2015-02-24 Smith International, Inc. Flow control through thrust bearing assembly
CN102642034B (zh) * 2012-04-01 2014-05-14 威海达旺五金制品有限责任公司 具有定位装置的钻夹头

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US2996302A (en) * 1959-11-10 1961-08-15 Jacobs Mfg Co Key drive coupling for machine spindle
CN1023980C (zh) * 1989-10-19 1994-03-16 苔尔塔株式会社 工具夹盘
EP0582030A1 (en) * 1992-08-07 1994-02-09 Jacobs Chuck Technology Corporation Chuck having a drive bit socket
CN1123207A (zh) * 1994-08-31 1996-05-29 优开洼精工株式会社 卡盘装置
WO1997006912A1 (en) * 1995-08-11 1997-02-27 Power Tool Holders Incorporated Chuck

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See also references of EP1025940A4 *

Also Published As

Publication number Publication date
EP1025940B1 (en) 2003-09-24
DE69725185D1 (de) 2003-10-30
EP1025940A1 (en) 2000-08-09
DE69725185T2 (de) 2004-11-25
US6247705B1 (en) 2001-06-19
EP1025940A4 (en) 2000-08-09

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