EP1813370A1 - Fraiseuse electrique a bois - Google Patents

Fraiseuse electrique a bois Download PDF

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Publication number
EP1813370A1
EP1813370A1 EP05801907A EP05801907A EP1813370A1 EP 1813370 A1 EP1813370 A1 EP 1813370A1 EP 05801907 A EP05801907 A EP 05801907A EP 05801907 A EP05801907 A EP 05801907A EP 1813370 A1 EP1813370 A1 EP 1813370A1
Authority
EP
European Patent Office
Prior art keywords
router
motor housing
depth
sensor element
display device
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP05801907A
Other languages
German (de)
English (en)
Other versions
EP1813370A4 (fr
EP1813370B1 (fr
Inventor
Shuhua Sang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Positec Power Tools Suzhou Co Ltd
Original Assignee
Positec Power Tools Suzhou 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 Positec Power Tools Suzhou Co Ltd filed Critical Positec Power Tools Suzhou Co Ltd
Publication of EP1813370A1 publication Critical patent/EP1813370A1/fr
Publication of EP1813370A4 publication Critical patent/EP1813370A4/fr
Application granted granted Critical
Publication of EP1813370B1 publication Critical patent/EP1813370B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
    • B27C5/00—Machines designed for producing special profiles or shaped work, e.g. by rotary cutters; Equipment therefor
    • B27C5/10—Portable hand-operated wood-milling machines; Routers

Definitions

  • the present invention generally relates to a router, and in particular to a router with a digital display device.
  • routers are often provided with a mechanism, such as adjustable rods and scales with indicators, for setting and/or adjusting the cutting depth of a router bit.
  • a mechanism such as adjustable rods and scales with indicators, for setting and/or adjusting the cutting depth of a router bit.
  • US Patent No. 4,272,821 discloses a router comprising a position encoding device coupled to a depth adjustment device.
  • the encoding device provides displacement information of a router bit that moves with a motor housing relative to a router base to a microprocessor, and a digital display device, which is coupled to the microprocessor, displays a precise digital reading of cutting depth of router bit that is obtained from the relative displacement of the router bit.
  • the router lacks of a locking device such that the router must be adjusted to obtain the desired cutting depth before routing operation.
  • US Patent No. 5,191,921 discloses a plunge router, which comprises a depth rod which can be set to a desired cutting depth. An operator of the plunge route may apply a downward force on a motor housing of the plunge router against the biasing force of an elastic element to drive a bit of the plunge route to a predetermined depth set by the depth rod.
  • the router comprises a moving member that follows a scale arranged in the motor housing to indicate the cutting depth. The operators can read the figures or indexes on the scale in performing a routing operation; however human error may occur in reading the scale, which makes it difficult to obtain very high precision machining result.
  • the present invention provides a router which is capable of plunge routing operation in which cutting depth of a route bit is precisely read by a digital display device.
  • the present invention provides a router, which comprises a router bit driven by a motor, a motor housing enclosing the motor, a base coupled to the motor housing, and a depth rod attached to the motor housing and movable in a direction substantially perpendicular to the base.
  • the depth rod comprises a first sensor element and the motor housing carries a second sensor element opposing the first sensor element.
  • the router further comprises a digital display device connected to one of the first and second sensor elements.
  • the router further comprises a depth adjusting mechanism for moving the depth rod and the depth adjusting mechanism comprises an operation knob, a gear mounted to the operation knob, a rack connected to the depth rod and mating and driven by the gear.
  • the router comprises a locking bolt disposed in the motor housing for selectively securing the depth rod at a selected position.
  • the router in accordance with the present invention is advantageous in that a depth rod is moveably connected to the motor housing and a sensor element transmits a position signal to a digital display device, which provides a direct visual display of positional data so that the router is capable of a plunge routing operation on the basis of precise positioning effected with the depth rod.
  • a depth rod is moveably connected to the motor housing and a sensor element transmits a position signal to a digital display device, which provides a direct visual display of positional data so that the router is capable of a plunge routing operation on the basis of precise positioning effected with the depth rod.
  • a preferred embodiment to which the present invention is applied comprises a router, which is indicated with reference numeral 20.
  • the router 20 comprises a router bit 1 driven by a motor (not shown), a motor housing 2 enclosing the motor, a base 3 vertically spaced from the motor housing 2 and coupled to the motor housing 2 by a pair of parallel plunge rods 9, a pair of handles 12 preferably integrally formed with the motor housing 2, a depth rod 4, a stop member 7, an adjustable mechanism 8, and a digital display device 5.
  • the stop member 7 is mounted on a surface of the base 3 facing the depth rod 4.
  • the digital display device 5 comprises a display element 51, an on/off switch 52, a reset switch 53 that is positioned below the display element 51 for resetting the reading of the display element 51 to zero, a mode switch 54 that is positioned below the display element 51 for switching between for example English and Metric unit read-outs.
  • the depth adjustable mechanism 8 of the router 20 is provided in the motor housing 2 and includes an operation knob 13.
  • the operation knob 13 is connected to a gear 14 that engages a rack 15 coupled to the depth rod 4.
  • the gear 14 rotates and causes the rack 15 to move in a direction perpendicular to the base 3 so as to adjust the position of the depth rod 4 relative to the stop member 7 mounted on the base 3.
  • the depth adjustable mechanism 8 can be embodied in various forms, such as those comprising a worm gear and a worm or a threaded rod and a nut, as substitutes for the gear and rack arrangement.
  • the rack 15 is secured to the depth rod 4, and a first sensor element 10 is attached to and movable in unison with the depth rod 4 in the direction perpendicular to the base 3.
  • the digital display device 5 is mounted to the motor housing 2 in such a way that the digital display device 5 and the motor housing 2 form a space therebetween in which the depth rod 4 is moveably accommodated. It is obvious that the digital display device 5 can be mounted to any suitable location on the motor housing 2, which allows for easy reading of the display device 5.
  • the digital display device 5 is connected to the first sensor element 10, or the digital display device 5 can be alternatively connected to a second sensor element 11.
  • the first sensor element 10 moves relative to the second sensor element 11 in order to generate a position signal which is transmitted to the digital display device 5 to be displayed on the display element 51.
  • the second sensor element 11 is mounted to the motor housing 2 and opposes to the first sensor element 10.
  • the second sensor element 11 is arranged at the side of the digital display device 5 that faces the depth rod 4.
  • a locking bolt 6 is provided in the motor housing 2 and can be rotated to engage and thus secure the depth rod 4 at a predetermined position.
  • a locking knob 16 is provided in the motor housing 2 and can be rotated to secure the motor housing 2 to the base 3 at a predetermined position.
  • the first sensor element 10 and the second sensor element 11 can be a capacitance transducer, or alternatively a potentiometer based sensor or an optical sensor known in the art.
  • the router To operate the router, the router is first positioned on a work piece and the operator applies a downward force on the motor housing 2 against the biasing force of an elastic element, generally by pressing the handles 12 to thereby move the router bit 1 downward into contact with the work piece and the locking knob 16 is then applied to lock and secure the motor housing 2 in such a position.
  • the operator then rotates the operation knob 13 to rotate the gear 14 and thus moving the rack 15 with respect to the motor housing.
  • the rack 15 is coupled to the depth rod 4 and thus the depth rod 4 is moved with the rack 15 with respect to the motor housing 2 until the depth rod 4 is brought into contact with the stop member 7 of the base 3.
  • the operator then unlocks the locking knob 16 and releases the handles 12.
  • the motor housing 2 being biased by the elastic element, automatically moves upward back to into the original position.
  • the operator actuates the on/off switch 52 to turn the digital display device 5 on, and then depresses the reset switch 53 to zero the display element 51.
  • the operator adjusts the depth adjustable mechanism 8 and again rotates the operation knob 13 to move the depth rod 4 relative to the motor housing 2 while observing the digital display device 5 until a desired depth is indicated on the display device 5, whereupon the operator tightens the locking bolt 6 to secure the depth rod 4 in place with respect to the motor housing 2.
  • the operator operates the handles 12 again to depress the motor housing 2 towards the base 3 until the depth rod 4 gets into contact with the stop member 7. At this time, the router bit 1, which is coupled to the motor housing 2, reaches the desired cutting depth.
  • the operator can depress the reset switch 53 to zero the display element 51, and then directly adjusts the operation knob 13 until a desired height of the stepped groove is indicated on the display element 51 of the display device 5 and thereafter, a plunge routing operation can be initiated.
  • the operator can directly adjust the operation knob 13 until an increase of height or depth, which is indicated on the display element 51, equals to the desired height of the groove, and thereafter, the operator begins the plunge routing operation.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Drilling And Boring (AREA)
  • Machine Tool Sensing Apparatuses (AREA)
EP05801907A 2004-11-15 2005-10-12 Fraiseuse electrique a bois Expired - Fee Related EP1813370B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNU2004201088878U CN2753547Y (zh) 2004-11-15 2004-11-15 电木铣
PCT/CN2005/001680 WO2006050653A1 (fr) 2004-11-15 2005-10-12 Fraiseuse electrique a bois

Publications (3)

Publication Number Publication Date
EP1813370A1 true EP1813370A1 (fr) 2007-08-01
EP1813370A4 EP1813370A4 (fr) 2008-01-23
EP1813370B1 EP1813370B1 (fr) 2013-01-09

Family

ID=35925657

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05801907A Expired - Fee Related EP1813370B1 (fr) 2004-11-15 2005-10-12 Fraiseuse electrique a bois

Country Status (4)

Country Link
EP (1) EP1813370B1 (fr)
CN (1) CN2753547Y (fr)
ES (1) ES2405284T3 (fr)
WO (1) WO2006050653A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7726918B2 (en) * 2005-05-24 2010-06-01 Hitachi Koki Co., Ltd. Power tool

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101007410B (zh) * 2006-01-26 2010-05-12 苏州宝时得电动工具有限公司 电木铣
CN101134324B (zh) * 2006-08-29 2011-03-30 苏州宝时得电动工具有限公司 电木铣工作台
CN104002337B (zh) * 2013-02-27 2016-08-03 南京德朔实业有限公司 电木铣
CN104552484A (zh) * 2013-10-10 2015-04-29 宝时得机械（张家港）有限公司 一种电木铣
CN107405783B (zh) * 2014-12-01 2020-06-05 罗伯特·博世有限公司 用于槽刨机的双可调节深度棒
CN108515584B (zh) * 2018-04-11 2020-07-24 浙江纺织服装职业技术学院 一种室内装修用便携修边机
CN110053106A (zh) * 2019-04-03 2019-07-26 刘钰 一种防误切木工电木铣
CN110549434A (zh) * 2019-09-10 2019-12-10 沧州市新华区发得利模具经销处 一种电木铣行程深度调节装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981000926A1 (fr) * 1979-09-18 1981-04-02 Black & Decker Inc Affichage digital de reglage d'une lame pour un outil portatif a moteur electrique
US5094575A (en) * 1990-03-15 1992-03-10 Metabowerke Gmbh & Co. Device for the fine adjustment of the cutting depth of a surface milling cutter
WO2005037505A1 (fr) * 2003-10-14 2005-04-28 Credo Technology Corporation Mecanisme perfectionne de reglage de tige de profondeur pour toupie plongeante

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3314419C2 (de) * 1983-04-21 1985-09-12 Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen Oberfräse mit Staubabsaugung
US5662440A (en) * 1996-08-08 1997-09-02 Ryobi North America Router attachment
US6139229A (en) * 1998-11-16 2000-10-31 Porter-Cable Corporation Plunge router fine depth adjustment system
US6474378B1 (en) * 2001-05-07 2002-11-05 S-B Power Tool Company Plunge router having electronic depth adjustment
US6726414B2 (en) * 2002-09-17 2004-04-27 One World Technologies, Limited Depth adjustment for a fixed base router
CN2598720Y (zh) * 2003-01-20 2004-01-14 青岛地恩地机电科技股份有限公司 带有数字显示标尺的钻床

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981000926A1 (fr) * 1979-09-18 1981-04-02 Black & Decker Inc Affichage digital de reglage d'une lame pour un outil portatif a moteur electrique
US5094575A (en) * 1990-03-15 1992-03-10 Metabowerke Gmbh & Co. Device for the fine adjustment of the cutting depth of a surface milling cutter
WO2005037505A1 (fr) * 2003-10-14 2005-04-28 Credo Technology Corporation Mecanisme perfectionne de reglage de tige de profondeur pour toupie plongeante

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2006050653A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7726918B2 (en) * 2005-05-24 2010-06-01 Hitachi Koki Co., Ltd. Power tool

Also Published As

Publication number Publication date
WO2006050653A1 (fr) 2006-05-18
CN2753547Y (zh) 2006-01-25
EP1813370A4 (fr) 2008-01-23
ES2405284T3 (es) 2013-05-30
EP1813370B1 (fr) 2013-01-09

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