EP1282484A1 - Machine tool, especially a hand machine tool - Google Patents
Machine tool, especially a hand machine toolInfo
- Publication number
- EP1282484A1 EP1282484A1 EP01921202A EP01921202A EP1282484A1 EP 1282484 A1 EP1282484 A1 EP 1282484A1 EP 01921202 A EP01921202 A EP 01921202A EP 01921202 A EP01921202 A EP 01921202A EP 1282484 A1 EP1282484 A1 EP 1282484A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- machine tool
- adjusting device
- tool according
- unit
- resets
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
Definitions
- Machine tool in particular hand machine tool
- the invention is based on a machine tool, in particular a hand tool, according to the preamble of claim 1.
- An adjustment wheel is often offered to an operator by means of which the speed can be set permanently or limited to a maximum value.
- the setting wheel can also be combined with a potentiometer in the switch trigger, so that the setting wheel specifies the upper limit of the trigger range.
- the speed can be matched to a machining process or to a material to be machined.
- An operator can preselect a speed that can be kept constant while working on a workpiece, for example when sawing, grinding, etc.
- the invention is based on a machine tool, in particular a hand-held power tool, with a drive motor arranged in a housing and at least one actuating device, by means of which at least one parameter of the drive motor and / or a transmission can be permanently set during an operating phase.
- the adjusting device have a reset unit, which resets the adjusting device to an initial position depending on at least one operating parameter. Incorrect operation can be safely avoided, especially if the machine tool is used by several people.
- the resetting unit can advantageously always reset the machine tool to a standard operating case, from which each operator can adjust the machine tool to his specific application in the usual way. It can certainly be avoided that a special setting that is unsuitable for a particular application is overlooked by a new operator.
- the machine tool can be operated with a maximum possible parameter, which can then be reduced by the adjusting device, that in the starting position the machine tool can be operated with a minimal set parameter can be operated, from which a setting should always be started for safety reasons, or that in the starting position the machine tool can be operated with a parameter which lies between a maximum and a minimum parameter.
- a speed of the tool is often decisive for advantageous machining, as a result of which a maximum speed can preferably be set as a parameter via the adjusting device, specifically directly via the drive machine and / or possibly also via a transmission.
- a maximum speed can in principle also make sense to determine a minimum speed via the adjusting device, which should not be undercut in an application, for example.
- a rotational speed In addition to a rotational speed, other parameters that appear sensible to a person skilled in the art can also be made adjustable via the adjusting device, such as in particular a minimum and / or maximum torque output and / or a machining stroke, for example in the case of a jigsaw or an eccentric grinder, etc.
- the reset unit reset the actuating device depending on a downtime.
- a functionally correct reset can be achieved in a structurally simple manner.
- the machine tool can also be adjusted to different areas of application and an unwanted resetting can be avoided, the downtime preferably being between one and twenty minutes.
- the reset unit when a power supply is interrupted, the reset unit resets the actuating device, for example when a mains plug is pulled out or an accumulator is replaced. Since a power plug of a handheld power tool in particular is frequently unplugged or the power supply is interrupted before an operator change, the operator change can be detected with a particularly high degree of probability.
- the reset unit resets the actuating device, for example depending on temperature values.
- the actuating device can be reset as soon as the machine tool has cooled down, for example by inserting a bimetal element
- Detent connection releases, and / or the actuating device can be reset if a certain temperature is exceeded, for example in the event of an overload.
- a mechanical can be structurally simple and inexpensive
- Reset mechanism can be realized, in particular with a tensioned spring element, which is held in position for example via a locking mechanism during operation, which is coupled to an on and off switch and is released when the machine tool is switched off.
- the resetting unit has an electromagnetic actuating element
- the resetting process can advantageously be simply coupled to a power supply, for example in that when a power supply is present, an electromagnet prevents a resetting spring from resetting the adjusting device directly or via a latching mechanism. If the power supply is interrupted and a holding force of the electromagnet is released, the return spring resets the adjusting device.
- the electromagnetic actuating element can also be combined with other mechanisms which appear useful to the person skilled in the art, for example with electrical and / or hydraulic actuators.
- the adjusting device for setting the parameter have at least one electronics unit that can be reset via the reset unit.
- the resetting process can advantageously be coupled to a power supply like an electromagnetic unit.
- the electronics unit can be realized in a particularly space-saving, light and inexpensive manner.
- a mechanical resetting of an actuating element can advantageously be avoided, for example an adjusting wheel.
- the solution according to the invention can be used in various machine tools which appear to be useful to a person skilled in the art and in particular in hand-held machine tools which are frequently used by several operators, such as, for example, hand drills, impact drills, hammer drills and / or chisel hammers, screwdrivers, angle grinders, eccentric grinding machines , Saws, planes etc.- drawing
- Fig. 1 is a schematically illustrated hand drill
- Fig. 2 is a setting wheel with an electromagnetic
- Reset unit and Fig. 3 an adjusting wheel with an electronic control unit.
- FIG. 1 shows a hand drill with an electric motor 12 arranged in a housing 10.
- the hand drill can be switched on and off with a switch 28.
- the hand drill has an adjusting device 14 with an adjusting wheel 30, by means of which a speed can be set to a certain value.
- the switch can also be equipped with a potentiometer that allows, for example, the speed to be varied from 0 to a final value preselected by the setting wheel.
- the actuating device 14 has a resetting unit 18, which resets the actuating device 14 to an initial position as a function of an operating parameter, specifically as soon as a power supply is interrupted (FIG. 2).
- the adjusting wheel 30 is rotatably mounted in a housing part 34 with an axis 32, via which a potentiometer, not shown, can be rotated.
- the axis 32 is secured in the housing part 34 axially in the direction of the setting wheel 30 via a gear 36 fastened on the axis 32 and axially in the direction of the gear 36 via a flange 38 on the setting wheel 30.
- a spiral spring 22 Arranged on the flange 38 is a spiral spring 22 which engages with a first leg 42 in a rotationally positive manner between two pins 44, 46 fastened to the adjusting wheel 30 and with a second leg 48 engages positively between two pins 50, 52 fastened on the housing part 34.
- an electromagnet 24 is energized and displaces a tappet 54 into a tooth space of the gear wheel 36. If the adjusting wheel 30 is rotated by a maximum adjustable by the switch trigger 28 To limit the speed to a certain value, the plunger 54 can be moved out of its detent position in the gear 36 or out of the tooth gap against the magnetic force of the electromagnet 24. If a tooth gap of the gear 36 comes to rest on the tappet 54, the tappet 54 is pressed into the magnetic force of the electromagnet 24
- the adjusting wheel 30 can be Gaps of the gear 36 predetermined levels can be adjusted.
- the setting wheel 30 and the potentiometer are fixed via the axis 32, the gear wheel 36 and the plunger 54 of the electromagnet 24 which engages in a tooth space of the gear wheel 36.
- the coil spring 22 is tensioned.
- Ram 54 can be moved from the tooth gap of the gear 36 via the spiral spring 22.
- the spiral spring 22 returns the adjusting wheel 30 and the potentiometer to their initial position, namely the speed limitation is lifted, so that the hand drill can be operated at the maximum possible speed via the switch push-button 28.
- the electromagnet 24 with the tappet 54 and the gearwheel 36 are advantageously used to step the setting range of the setting wheel 30, to lock the setting wheel 30 during an operating phase and to implement an advantageous reset mechanism.
- FIGS. 1 and 2 shows an alternative adjusting device 16 with an adjusting wheel 56.
- Components that remain essentially the same are generally numbered with the same reference numerals.
- the adjusting wheel 56 is connected via a pulse generator 58 to an electronic control unit 26, which Speed controller 60 specifies. Instead of a pulse generator, however, an endless potentiometer is also possible. If the hand drill is connected to a power supply via a power supply unit 62 with a mains plug and a mains cable, the control unit 26 is energized via a line 64 independently of the actuation of the switch 28. The speed of the electric motor 12 can then be set to a specific value by means of the adjusting wheel 56. The set speed is shown on a display 66. If a setting limit is reached in a direction of rotation of the setting wheel 56, the setting wheel 56 can be rotated further without the speed setting changing.
- a reset unit 20 in the control unit 26 resets it to its starting position, namely the preselected speed is canceled so that the hand drill can be operated at the maximum possible speed.
- the downtime at which the control unit 26 is reset via the reset unit 20 can be set to an amount between two and twenty minutes using an adjusting wheel 40.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Drilling And Boring (AREA)
- Automatic Tool Replacement In Machine Tools (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10023174 | 2000-05-11 | ||
DE10023174A DE10023174A1 (en) | 2000-05-11 | 2000-05-11 | Electric hand tool, e.g. drill with speed control has automatic reset for adjuster, returning it to initial setting in accordance with an operational parameter |
PCT/DE2001/000988 WO2001085399A1 (en) | 2000-05-11 | 2001-03-15 | Machine tool, especially a hand machine tool |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1282484A1 true EP1282484A1 (en) | 2003-02-12 |
EP1282484B1 EP1282484B1 (en) | 2008-07-02 |
Family
ID=7641712
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01921202A Expired - Lifetime EP1282484B1 (en) | 2000-05-11 | 2001-03-15 | Machine tool, especially a hand machine tool |
Country Status (7)
Country | Link |
---|---|
US (1) | US6983809B2 (en) |
EP (1) | EP1282484B1 (en) |
JP (1) | JP5009470B2 (en) |
CN (1) | CN1256217C (en) |
BR (1) | BR0110711A (en) |
DE (2) | DE10023174A1 (en) |
WO (1) | WO2001085399A1 (en) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3901235B1 (en) | 2003-06-02 | 2023-11-15 | UDC Ireland Limited | Organic electroluminescent devices and metal complex compounds |
DE102004003191A1 (en) * | 2004-01-22 | 2005-08-11 | Robert Bosch Gmbh | Electric hand tool with storage option |
JP4906236B2 (en) * | 2004-03-12 | 2012-03-28 | 株式会社マキタ | Tightening tool |
DE102004017946A1 (en) * | 2004-04-14 | 2005-11-03 | Robert Bosch Gmbh | Accumulator-powered hand tool machine |
DE102008038811B4 (en) | 2007-07-31 | 2023-09-21 | Marquardt Gmbh | Electric switch |
US20090065225A1 (en) * | 2007-09-07 | 2009-03-12 | Black & Decker Inc. | Switchable anti-lock control |
DE102008009233A1 (en) * | 2008-02-04 | 2009-08-06 | REMS-WERK Christian Föll und Söhne GmbH & Co KG | Drive unit for tools, preferably for core drill bits |
US8852776B2 (en) * | 2008-02-11 | 2014-10-07 | Milwaukee Electric Tool Corporation | Battery connection for a power tool |
CN102056697B (en) * | 2008-06-10 | 2013-05-29 | 株式会社牧田 | Circular saw |
DE102008002594A1 (en) * | 2008-06-24 | 2009-12-31 | Robert Bosch Gmbh | Method for operating a machine tool with a coupling device |
JP4793426B2 (en) * | 2008-11-10 | 2011-10-12 | パナソニック電工株式会社 | Rechargeable power tool |
DE102009012181A1 (en) * | 2009-02-27 | 2010-09-02 | Andreas Stihl Ag & Co. Kg | Battery-powered, hand-held implement with a throttle |
JP5374331B2 (en) * | 2009-11-25 | 2013-12-25 | パナソニック株式会社 | Rotating tool |
DE102010001030B4 (en) * | 2010-01-19 | 2023-07-06 | Robert Bosch Gmbh | Cordless hand tool and method for operating a cordless hand tool |
JP5468925B2 (en) * | 2010-01-29 | 2014-04-09 | Dmg森精機株式会社 | Parameter setting apparatus and method for detecting relocation of machine tool |
DE102010029267A1 (en) * | 2010-05-25 | 2011-12-01 | Robert Bosch Gmbh | Power tool, in particular drill driver |
DE102011010224A1 (en) * | 2011-02-03 | 2012-08-09 | Festool Gmbh | Hand machine tool with a temperature-dependent sensor |
DE102011105306A1 (en) * | 2011-06-22 | 2012-12-27 | Robert Bosch Gmbh | Portable tool with wireless data transmission |
DE102011109133B4 (en) * | 2011-08-02 | 2020-10-22 | Robert Bosch Gmbh | Transportable screwdriving tool with integrated switching element |
DE102012218300A1 (en) * | 2012-10-08 | 2014-04-10 | Hilti Aktiengesellschaft | Method and apparatus for operating a hand tool with a tangential impactor |
US20140166324A1 (en) * | 2012-12-13 | 2014-06-19 | Black & Decker Inc. | Power Tool User Interface |
US9764486B2 (en) | 2013-04-04 | 2017-09-19 | Milwaukee Electric Tool Corporation | Power tool |
EP2985119B1 (en) * | 2014-07-18 | 2020-06-03 | Black & Decker, Inc. | A chop saw |
JP6577830B2 (en) * | 2015-10-28 | 2019-09-18 | 株式会社マキタ | Electric tool |
DE102015226084A1 (en) * | 2015-12-18 | 2017-06-22 | Robert Bosch Gmbh | Hand tool machine with a communication interface |
JP6342974B2 (en) * | 2016-11-24 | 2018-06-13 | ファナック株式会社 | Manual pulse generator |
CN109746877A (en) * | 2019-03-27 | 2019-05-14 | 常州格力博有限公司 | Hand held electric tool |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3197594A (en) * | 1962-12-28 | 1965-07-27 | Therm O Disc Inc | Thermo-sensitive switch plug |
US3723929A (en) * | 1972-04-07 | 1973-03-27 | Furnas Electric Co | Bimetallic circuit overload protector |
US4249117A (en) * | 1979-05-01 | 1981-02-03 | Black And Decker, Inc. | Anti-kickback power tool control |
DE2926111A1 (en) * | 1979-06-28 | 1981-01-08 | Scintilla Ag | ELECTRIC HAND TOOL |
DE2933355A1 (en) * | 1979-08-17 | 1981-03-26 | Scintilla Ag, Solothurn | ELECTRIC HAND TOOL |
EP0033353A1 (en) * | 1980-02-05 | 1981-08-12 | Black & Decker Inc. | Method of controlling the speed of a drill, hammer-drill, or rotary hammer and apparatus therefor |
DE8102453U1 (en) * | 1981-01-31 | 1982-09-09 | Kress-elektrik GmbH & Co, Elektromotorenfabrik, 7457 Bisingen | Electric hand machine tool for screwing, drilling and possibly hammer drilling |
FR2517999B1 (en) * | 1981-12-15 | 1985-06-21 | Peugeot Outillage Elect | MULTI-SPEED PORTABLE DRILL |
DE3236033A1 (en) * | 1982-09-29 | 1984-03-29 | Robert Bosch Gmbh, 7000 Stuttgart | SCREW DEVICE |
DE3329971A1 (en) * | 1983-08-19 | 1985-03-07 | Robert Bosch Gmbh, 7000 Stuttgart | CONTROL AND OPERATING DEVICE FOR AN ELECTRIC HAND TOOL |
FR2568010B1 (en) * | 1984-07-23 | 1987-05-15 | Stephanoises Forges | ELECTRONIC DYNAMOMETRIC KEY |
GB8812292D0 (en) * | 1988-05-24 | 1988-06-29 | Black & Decker Inc | Improvements in/relating to power tools |
US5038084A (en) * | 1990-08-15 | 1991-08-06 | Wing Thomas W | Drill motor control |
DE4119941A1 (en) * | 1991-06-17 | 1993-01-07 | Frischmuth & Freitag Diamant U | Protecting drive motor of electrical power tool - controlling zero voltage releaser and excess current releaser by drive current |
GB9320181D0 (en) * | 1993-09-30 | 1993-11-17 | Black & Decker Inc | Improvements in and relating to power tools |
JP3264607B2 (en) * | 1995-07-28 | 2002-03-11 | 株式会社モリタ製作所 | Motor control device for dental handpiece |
DE29701358U1 (en) | 1997-01-29 | 1997-04-17 | Laessig Lothar | Power tool |
JP2001205575A (en) * | 2000-01-28 | 2001-07-31 | Nitto Kohki Co Ltd | Torque-controlled impact wrench |
EP1982798A3 (en) * | 2000-03-16 | 2008-11-12 | Makita Corporation | Power tool |
-
2000
- 2000-05-11 DE DE10023174A patent/DE10023174A1/en not_active Ceased
-
2001
- 2001-03-15 JP JP2001582038A patent/JP5009470B2/en not_active Expired - Fee Related
- 2001-03-15 US US10/276,139 patent/US6983809B2/en not_active Expired - Fee Related
- 2001-03-15 WO PCT/DE2001/000988 patent/WO2001085399A1/en active IP Right Grant
- 2001-03-15 BR BR0110711-9A patent/BR0110711A/en not_active Application Discontinuation
- 2001-03-15 CN CNB018091350A patent/CN1256217C/en not_active Expired - Fee Related
- 2001-03-15 EP EP01921202A patent/EP1282484B1/en not_active Expired - Lifetime
- 2001-03-15 DE DE50114072T patent/DE50114072D1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0185399A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN1427756A (en) | 2003-07-02 |
JP5009470B2 (en) | 2012-08-22 |
US20040159449A1 (en) | 2004-08-19 |
US6983809B2 (en) | 2006-01-10 |
CN1256217C (en) | 2006-05-17 |
DE10023174A1 (en) | 2001-11-22 |
EP1282484B1 (en) | 2008-07-02 |
WO2001085399A1 (en) | 2001-11-15 |
DE50114072D1 (en) | 2008-08-14 |
BR0110711A (en) | 2003-02-11 |
JP2004507368A (en) | 2004-03-11 |
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