EP0031433A2 - Outil à main entraîné par un moteur - Google Patents

Outil à main entraîné par un moteur Download PDF

Info

Publication number
EP0031433A2
EP0031433A2 EP80107049A EP80107049A EP0031433A2 EP 0031433 A2 EP0031433 A2 EP 0031433A2 EP 80107049 A EP80107049 A EP 80107049A EP 80107049 A EP80107049 A EP 80107049A EP 0031433 A2 EP0031433 A2 EP 0031433A2
Authority
EP
European Patent Office
Prior art keywords
holder
tool
hand tool
worm
drive
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
EP80107049A
Other languages
German (de)
English (en)
Other versions
EP0031433A3 (en
EP0031433B1 (fr
Inventor
Werner Heinzelmann
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.)
Mafell Maschinenfabrik Rudolf Mey GmbH and Co KG
Original Assignee
Mafell Maschinenfabrik Rudolf Mey GmbH and Co KG
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 Mafell Maschinenfabrik Rudolf Mey GmbH and Co KG filed Critical Mafell Maschinenfabrik Rudolf Mey GmbH and Co KG
Publication of EP0031433A2 publication Critical patent/EP0031433A2/fr
Publication of EP0031433A3 publication Critical patent/EP0031433A3/de
Application granted granted Critical
Publication of EP0031433B1 publication Critical patent/EP0031433B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/06—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with reciprocating saw-blades
    • B28D1/062—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with reciprocating saw-blades the saw blade rotating about its longitudinal axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor

Definitions

  • the invention relates to a motor-driven hand tool, the machining tool of which also executes an axial back and forth movement in addition to a rotary movement and whose tool holder or holder is mounted at least axially displaceably in the housing of the hand tool.
  • Hand tools of this type are available in various embodiments, for example as electrically operated impact drills and the like.
  • That of the rotary motion Superimposed linear movement of the machining tool brings about a better work result and / or protection or better utilization of the tool and / or workpiece.
  • the back-and-forth movement is produced by acting on the inner end of the tool holder or holder, which is pointing away from the machining tool, or of a component firmly connected to it in the direction of displacement, preferably at equal time intervals.
  • the object of the invention is therefore to provide a motor-driven hand tool of the type mentioned, which is equipped with a simple, robust and inexpensive drive for the back and forth movement of the movable tool and in which the number of strokes is smaller or even significantly smaller can be as the number of revolutions of the machining tool carried out per stroke.
  • a motor-driven hand tool is designed in accordance with the preamble of claim 1 in accordance with the characterizing part of the first claim. Due to the lateral arrangement of the displacement drive effecting the back and forth movement, the number of strokes can be selected within wide limits regardless of the speed of the machining tool. In addition, this drive can be designed to be relatively compact and uncomplicated. The number of parts can be relatively small, regardless of whether this drive is connected directly or only indirectly to the tool holder or holder. It is only necessary to ensure that the displacement drive does not hinder the rotary movement of the processing tool and vice versa the rotary drive is designed so that it allows the displacement movement easily.
  • a preferred area of application for such a hand tool is hand tools with an end mill or a correspondingly shaped grindstone, above all with an electric drive.
  • the milling cutter or a cylindrical grindstone held on a shaft is driven not only in the direction of rotation but also in the axial direction. This is especially true when the processing tool is set with diamonds. Without the back-and-forth movement, which has not been known to date with such tile processing devices, the milling cutter or grinder is only stressed and worn over part of its circumference. Especially with diamond-tipped processing tools, this is not only uneconomical, but seen in the long run, it is also disadvantageous.
  • the number of strokes - of course within certain limits - can be selected independently of the number of revolutions that the machining tool executes per stroke, this means the constructive scope that is available to the technician. If the drives for the rotation and the back and forth movement of the machining tool and possibly also certain gear ratios are selected, this ultimately results in a fixed assignment of the revolutions of the machining tool per total stroke, unless an additional adjustment device is used built in, which allows a change of this ratio. However, the latter is a question of cost rather than a technical problem.
  • a preferred variant of the invention with a rotatably mounted tool holder or holder provides that the Tool holder or holder is coupled to an eccentric drive, which in turn is connected to the motor drive shaft. Equally equivalent is the indirect actuation of the tool holder or holder by the eccentric drive via an intermediate component that is coupled with the tool holder in terms of movement.
  • the shape and arrangement of the eccentric drive are to be selected so that its rotational movement allows the coupled component to move back and forth and ultimately the machining tool.
  • the eccentric drive has a rotatably mounted disk with an annular groove which is open in the axial direction and is eccentrically arranged with respect to its bearing shaft and into which a control pin engages, which is connected to a component connected in terms of movement to the tool holder or holder is attached and extends transversely to the direction of displacement. It is also conceivable to attach the control pin to the disk and to cooperate with a wall opening or recess on the component mentioned.
  • the wall recess or a slot for receiving the control pin must be at least, but preferably also approximately so wide that the control pin rotates in the course of one revolution of the disk can move from left to right and back again.
  • the slot width is preferably selected in accordance with the diameter of the control pin in order to avoid shocks during the transition from the upward to the downward movement and vice versa. In addition, you have to dimension the pin length so that it engages in it deep enough even when assigned to the lateral slot or recess ends.
  • the slot runs in an arc in a plane perpendicular to the longitudinal axis of the machining tool, because it is incorporated into the wall of a cylindrical component.
  • the former alternative has the advantage that the component only executes an axial movement.
  • a further embodiment of the invention provides that the component with the control pin is a guide bush which is at least slidably mounted in the housing for the rotatable mounting of the tool holder.
  • This bushing expediently accommodates two rotary bearings, for example a radial roller bearing and a needle bearing, for the rotary movement of the tool holder or the machining tool. More precisely, the outer rings of the bearings mentioned are then held in this sleeve, which can be equipped with corresponding inner stops.
  • the inner rings are pushed onto the tool holder or a shaft that is rotatably connected to it.
  • the radial roller bearing also takes on the task of a driver, which does not prevent the rotary movement and is indispensable for the feed drive provided.
  • the tool holder is coupled to the motor drive shaft via a telescopically extendable connecting device, in particular a spline connection or the like . This enables the necessary back and forth movement of the guide bushing in the case of an axially immovable motor drive shaft.
  • the rotatably mounted disc be designed as a worm wheel is that cooperates with a worm, which is in drive connection with the drive motor for the machining tool.
  • a worm gear which is in drive connection with the drive motor for the machining tool.
  • the bearing shaft of the worm according to another embodiment of the invention carries a gear that cooperates with a pinion of the motor drive shaft, the longitudinal axes of the worm and the drive shaft being parallel to one another.
  • this has the advantage that one does not need a separate drive motor for driving the disk or the displacement drive, but rather that for the rotary movement of the machining tool can also be used.
  • a further embodiment of the invention provides that the bearing shaft of the rotatable disk is mounted in an eccentric bore of an adjusting sleeve which is rotatable in the housing and which, at its outwardly pointing, closed end, is designed as an actuating member or such wearing.
  • the worm wheel can be lifted off the worm via the bearings and thus the bearing shaft of the disk, and thus the displacement drive for the processing tool can be deactivated or activated.
  • the adjusting sleeve can be locked and / or locked in at least two rotational positions offset by 90 °, so that the switch-on and switch-off positions of the displacement drive can be easily found or properly secured.
  • an embodiment of the invention is shown partly in a side view and partly in a longitudinal central section through the motor drive axis or the axis of the worm.
  • the motor-driven hand tool of the exemplary embodiment is used primarily for processing ceramic work fabrics, especially wall and floor tiles.
  • a machining tool 2 designed as an end mill or as a grinder is inserted, with the latter in particular considering a grinder with diamond chips.
  • the tool holder is designed as a three-jaw chuck, the tool shank 3 is held and released in a known manner by means of a key. It can of course also be held in another known manner, for example by screwing an adjusting screw (not shown) into a thread 4 of the tool holder 1 provided for this purpose End of the motor drive shaft 6 coupled.
  • the machining tool 2 can also perform a back and forth movement in the sense of the double arrow 7.
  • An electric motor 8 can be used as the drive motor, which can be seen partly in section in the drawing and can be of conventional design. It is actuated by means of a switch, which is not shown in detail and has a pusher 9.
  • the area of the drive shaft 6 assigned to the motor bearing 10 is designed as a pinion 11. Its teeth are in engagement with those of a gear wheel 12 and they can advantageously have the same pitch as the spline roller of the spline shaft connection 5.
  • Two bearings, in particular roller bearings 14 and 15, are used to support the gear shaft 13.
  • the gear shaft 13 is integral with a worm 16 manufactured or partially designed as such. The latter works together with a worm wheel 17, the bearing shaft of which is designated 18 and is supported in two bearings, preferably roller bearings 19 and 20.
  • the worm wheel 17 has an eccentrically attached annular groove 23 which is open towards the edge against the bearing shaft 18 and into which a control pin 21 engages.
  • this sleeve 31 shown extends perpendicular to the image plane.
  • this sleeve can be rotated in the housing bore 34, if necessary, after a locking screw 33 has been loosened beforehand. Due to the eccentricity of the bore 30, such a rotation causes a parallel displacement of the bearing shaft 18 and thus a lifting of the worm wheel 17 from the worm 16.
  • a support leg 35 is used, which can also be pivoted, for example, about an axis located in the image plane. If the head of the screw 33 or a similar, for example spring-loaded element, engages in a notch 37 of the adjusting sleeve 31, a rotation lock is achieved in this way. It is readily possible to provide at least two notches of this type offset by 90 ° on the circumference.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
EP80107049A 1979-12-21 1980-11-14 Outil à main entraîné par un moteur Expired EP0031433B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2951644 1979-12-21
DE19792951644 DE2951644A1 (de) 1979-12-21 1979-12-21 Motorgetriebenes handwerkzeug

Publications (3)

Publication Number Publication Date
EP0031433A2 true EP0031433A2 (fr) 1981-07-08
EP0031433A3 EP0031433A3 (en) 1981-07-15
EP0031433B1 EP0031433B1 (fr) 1983-10-12

Family

ID=6089220

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80107049A Expired EP0031433B1 (fr) 1979-12-21 1980-11-14 Outil à main entraîné par un moteur

Country Status (3)

Country Link
EP (1) EP0031433B1 (fr)
DE (1) DE2951644A1 (fr)
IT (1) IT1150097B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0730931A1 (fr) * 1995-03-10 1996-09-11 Gerd Buchter Outil mécanisé pour meuler, râper, limer ou polir
US6702090B2 (en) 2001-03-14 2004-03-09 Milwaukee Electric Tool Corporation Power tool and spindle lock system
DE19605143B4 (de) * 1995-05-19 2004-12-30 Peter Galeski Bearbeitungsvorrichtung für Steinplatten
US7063201B2 (en) 2001-11-27 2006-06-20 Milwaukee Electric Tool Corporation Power tool and spindle lock system
US8292001B2 (en) 2007-11-21 2012-10-23 Black & Decker Inc. Multi-mode drill with an electronic switching arrangement

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7735575B2 (en) 2007-11-21 2010-06-15 Black & Decker Inc. Hammer drill with hard hammer support structure
US7762349B2 (en) 2007-11-21 2010-07-27 Black & Decker Inc. Multi-speed drill and transmission with low gear only clutch
US7770660B2 (en) 2007-11-21 2010-08-10 Black & Decker Inc. Mid-handle drill construction and assembly process
US7854274B2 (en) 2007-11-21 2010-12-21 Black & Decker Inc. Multi-mode drill and transmission sub-assembly including a gear case cover supporting biasing
US7717192B2 (en) 2007-11-21 2010-05-18 Black & Decker Inc. Multi-mode drill with mode collar
US7717191B2 (en) 2007-11-21 2010-05-18 Black & Decker Inc. Multi-mode hammer drill with shift lock
CN106182462A (zh) * 2016-08-20 2016-12-07 浙江午马减速机有限公司 一种石材切边机刀架总成

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE389045A (fr) *
US1408578A (en) * 1922-03-07 Pobtable cylinder gbinber
CA879523A (en) * 1971-08-31 A. Marland Joseph One-way self-alining torque unit
US1464728A (en) * 1921-09-06 1923-08-14 William D Kline Portable grinder
US1808732A (en) * 1928-12-22 1931-06-02 Edward O Norris Surfacing machine
US1951170A (en) * 1932-12-14 1934-03-13 Schwob Henry Mechanical power hammer
US2311346A (en) * 1942-03-26 1943-02-16 Adolph T Munn Sandpapering machine
FR1057806A (fr) * 1949-11-16 1954-03-11 Appareil à meuler et à polir
FR1066371A (fr) * 1952-11-07 1954-06-04 Mécanisme pour le travail en surface du feutre et d'autres matériaux
DE1628045B2 (de) * 1967-01-13 1974-01-10 Robert Bosch Gmbh, 7000 Stuttgart Hammergerät mit einem quer zur Schlagrichtung eingebauten Antriebsmotor
US3418758A (en) * 1967-01-31 1968-12-31 Mcewan James Oscillating vertical spindle sander
DE2122582C3 (de) * 1971-05-07 1980-01-10 Robert Bosch Gmbh, 7000 Stuttgart Von Hand geführte Drehschlagbohrmaschine
BE779394A (fr) * 1972-02-15 1972-05-30 Bellinghen Andre J J J Van Marteau percuteur pneumatique.
IT1066884B (it) * 1976-08-09 1985-03-12 Star Utensili Elett Trapano del tipo a percussione
DE2702195A1 (de) * 1977-01-20 1978-07-27 Metabowerke Kg Motorisch angetriebener hammer, bei dem in einem gehaeuse zwischen zwei parallelen laengsfuehrungen ein zylinder verschiebbar gefuehrt ist

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0730931A1 (fr) * 1995-03-10 1996-09-11 Gerd Buchter Outil mécanisé pour meuler, râper, limer ou polir
DE19605143B4 (de) * 1995-05-19 2004-12-30 Peter Galeski Bearbeitungsvorrichtung für Steinplatten
US6702090B2 (en) 2001-03-14 2004-03-09 Milwaukee Electric Tool Corporation Power tool and spindle lock system
US7063201B2 (en) 2001-11-27 2006-06-20 Milwaukee Electric Tool Corporation Power tool and spindle lock system
US8292001B2 (en) 2007-11-21 2012-10-23 Black & Decker Inc. Multi-mode drill with an electronic switching arrangement

Also Published As

Publication number Publication date
IT8026765A0 (it) 1980-12-18
IT1150097B (it) 1986-12-10
DE2951644A1 (de) 1981-07-02
EP0031433A3 (en) 1981-07-15
EP0031433B1 (fr) 1983-10-12

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