EP2089178A1 - Scie à main à mouvement alternatif - Google Patents

Scie à main à mouvement alternatif

Info

Publication number
EP2089178A1
EP2089178A1 EP07820404A EP07820404A EP2089178A1 EP 2089178 A1 EP2089178 A1 EP 2089178A1 EP 07820404 A EP07820404 A EP 07820404A EP 07820404 A EP07820404 A EP 07820404A EP 2089178 A1 EP2089178 A1 EP 2089178A1
Authority
EP
European Patent Office
Prior art keywords
handhubsäge
saw
saw blade
hand
unit
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.)
Withdrawn
Application number
EP07820404A
Other languages
German (de)
English (en)
Inventor
Hans Kaiser
Klaus Marx
Stefano Delfini
Wolfgang Niehsen
Thilo Koeder
Gunter Flinspach
Joachim Frangen
Joachim Platzer
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2089178A1 publication Critical patent/EP2089178A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D49/00—Machines or devices for sawing with straight reciprocating saw blades, e.g. hacksaws
    • B23D49/10—Hand-held or hand-operated sawing devices with straight saw blades
    • B23D49/16—Hand-held or hand-operated sawing devices with straight saw blades actuated by electric or magnetic power or prime movers
    • B23D49/162—Pad sawing devices
    • B23D49/167—Pad sawing devices with means to adjust the guide plate or with means to adjust the plane in which the saw blade moves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D51/00—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends
    • B23D51/02—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of beds; of guiding arrangements for work-tables or saw carriers; of frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D59/00—Accessories specially designed for sawing machines or sawing devices
    • B23D59/001—Measuring or control devices, e.g. for automatic control of work feed pressure on band saw blade
    • B23D59/002—Measuring or control devices, e.g. for automatic control of work feed pressure on band saw blade for the position of the saw blade
    • 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
    • Y10T83/00—Cutting
    • Y10T83/525—Operation controlled by detector means responsive to work
    • Y10T83/531—With plural work-sensing means
    • 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
    • Y10T83/00—Cutting
    • Y10T83/828—With illuminating or viewing means for work

Definitions

  • the present invention is based on a hand stroke saw according to the preamble of claim 1.
  • jigsaws are known, which are referred to as "scrolling jigsaws" and in which the saw blade is manually rotatably mounted in addition to the lifting movement independently of the saw movement about its own axis Additional function simplifies the sawing of curvy cuts.
  • the invention is based on a hand-held saw, in particular a scrolling jigsaw.
  • a “tracking” here defines an orientation along a predetermined path, which is preferably characterized by a marker.
  • This marking may be a score line, such as a pre-scored pencil line, and / or another marker that appears expedient to a person skilled in the art, such as a notch and / or further profiling.
  • the system is used to assist an operator and thus simplify the sawing process.
  • the hand stroke is equipped with a special sensor for detecting a pre-drawn line or a tear line and a corresponding actuator for automatic adjustment of the saw blade angle from an angular range of a swivel angle.
  • the axis of rotation is defined here by a normal, which runs through a center of a plane, wherein the plane is spanned by a thickness and a width of the saw blade.
  • the axis of rotation of the saw blade may also be arranged deviating from the center thereof.
  • the pivoting angle represents the angle by which the saw blade can be adjusted as much as possible about its longitudinal axis with respect to a longitudinal axis of the sliding element and / or another guide body that appears appropriate to a person skilled in the art, such as a running gear.
  • This pivot angle preferably has an angle between 0 ° and 90 ° degrees.
  • the saw blade angle of the saw blade is the angle that is actually set between the widthwise extension of the saw blade and the longitudinal extension axis of the sliding element or of a guide body.
  • a saw blade movement superimposed on the hand-guided movement of the operator allows a pre-drawn contour to be traced even more precisely. Straight cuts are also possible without additional guides. This results in a simplified operation a significantly improved machining result.
  • the pre-drawn line can advantageously be tracked through the saw blade in an advantageous and constructive manner.
  • deflectable is meant in particular a bending and / or a rotation of the saw blade in an axis which preferably runs parallel to a longitudinal extension of the saw blade another exercise on the saw blade come about.
  • the invention is based on a hand stroke saw, in particular a scrolling jigsaw.
  • a “sensor” is to be understood here in particular as meaning a camera unit and / or a contrast sensor unit and / or an eddy-current sensor unit structurally simple detection of a desired cutting direction can be achieved.
  • the invention is based on a hand stroke saw, in particular a scrolling jigsaw.
  • optical mouse sensors serve to determine a speed and / or a direction of movement.
  • An "optical mouse sensor” is to be understood here as meaning a sensor which illuminates a base with optical means, such as a light and / or laser diode, evaluates a light reflected from the base, or a speed of change of a surface of the base
  • the direction of movement and / or the feed speed can also be determined by an impeller with rotary encoder, such as a rolling element with corresponding light barriers, which moves in at least two directions.
  • means for comparing individual camera images can also be provided for determining the feed rate.
  • the invention is based on a hand-held saw, in particular a scrolling jigsaw.
  • a display element is provided which is intended to indicate a feed direction to be taken.
  • a "display element” is to be understood here as an element which reproduces optically, acoustically and / or tactually the path detected by a sensor or a progression of the tear line to an operator.
  • the display element can here be LEDs and / or a display It can thereby advantageously be achieved that an operator receives information concerning an expected direction of movement independently of a view of the saw blade an optimal working environment rich, which represents an angular range of the possible saw blade angle.
  • Figure 2 is a formed by a foot plate
  • FIG. 3 shows an alternative sliding shoe formed by a foot plate of the hand-held saw according to the invention
  • FIG. 4 shows an alternative sliding shoe formed by a foot plate of the manual lifting saw according to the invention with alternative sensors and
  • FIG. 1 shows a hand-saw 9 according to the invention in the form of a scrolling jigsaw, in a perspective side view.
  • the hand saw 9 includes a machine housing 44 having a main handle 46 integrated with the machine housing 44, a tool holder 48 having a tool received therein in the form of a saw blade 12 rotatably disposed.
  • a sliding element or a sliding block 8 is arranged in the form of a base plate.
  • a guide knob 54 is arranged, which serves for at least manual guidance of the hand lifting 9.
  • a not-shown motor is arranged in the machine housing 44.
  • an operation switch 56 is provided, by means of which the hand stroke 9 can be switched on and off. Furthermore, an adjusting switch 60 is arranged in a side region 58 of the machine housing 44, via which the sliding shoe 8 can be adjusted relative to a main extension 62 of the saw blade 12.
  • the hand stroke saw 9 comprises control means 10, 100, by means of which a tracking of the saw blade 12 along the tear line 14 can be automated.
  • the control means 10 is disposed in a direction away from the main handle 46 in the axial direction 64. facing portion 66 of the machine housing 44.
  • the control means 10 comprises a sensor 16 for detecting or for optically detecting a marking or tear line 14 applied to the workpiece 18 in the form of a normal pencil line 3.
  • the sensor 16 is formed by a camera unit 7, which is preferably a low-cost camera includes, and a computing unit 28 is assigned.
  • the sensor 16 could also be a contrast sensor unit 20 and / or an eddy current sensor unit 22, to each of which a computing unit 28 is assigned.
  • an arrangement of the eddy current sensor 22 in the sliding block 8 would also be conceivable.
  • Camera unit 7 extends in the direction of the main extension 62 of the saw blade 12 towards the workpiece 18 and covers a 360 ° angle range around the saw blade 12.
  • the monitoring area 68 of the camera unit 7 represents the area in which the saw blade 12 operates in a processing mode, preferably a sawing process of a workpiece 18.
  • the shoe 8 has around the saw blade 12 a part-circular recess 70 in which the saw blade 12 is arranged centrally. In the direction of a feed direction 38 or in the direction of the monitoring area 68, the recess 70 has a rectangular viewing window 102.
  • the sliding block 8 has a reference mark 74 which marks an intersection of an edge 76 of the sliding shoe 8 with a longitudinal extension axis 78 of the sliding block 8 (see FIG. 2).
  • FIG. 3 shows an alternative embodiment of the sliding shoe 8.
  • the central recess 70 widens in this case into a V-shaped view area 72.
  • FIG. 4 shows a further alternative embodiment of the sliding shoe 8 with a circular recess 70.
  • the sliding block 8 is designed to be closed in the monitoring area 68 and is designed to be transparent to a monitoring possibility of the tear line 14 on the workpiece 18, for example of Plexiglas (see FIG. 4).
  • a compact actuator 2 is arranged in the machine housing 44 of the hand stroke saw 9, which can automatically adjust the saw blade 12 about a rotation axis 1.
  • the control means 100 is provided.
  • the control means 100 represents an actuating unit 30, designed as an actuator with regulator 34 in the form of a stepper motor, by means of which a saw blade angle 26 of a saw blade 12 is adjustable.
  • the control means 100 or the stepping motor can also be arranged to save space as an alternative to the guide knob 54.
  • the saw blade angle 26 is an angle ⁇ from the
  • Angular range of a pivot angle 80 the real between the widthwise extension 82 of the saw blade 12 and the longitudinal extension axis 78 of the shoe 8 is set.
  • the swivel angle 80 represents the angle ⁇ max , by which the saw blade 12 is rotated about its longitudinal axis parallel to the main extension direction 62 of the saw blade 12. Blade 12 is aligned, with respect to a longitudinal axis 78 of the shoe 8 can be maximally adjusted (see Figure 2).
  • control means 10, 100 namely the sensor 16 and the control unit 30
  • a control loop for the most accurate possible tracking of the predetermined line or the tear line 14 can be implemented.
  • the peculiarity lies in the use of analogue image processing for the detection of the scribe line 14 and in the automation of the system. Thus, it is possible to perform clean, straight cuts by hand and to actively prevent a deviation of the saw blade 12.
  • the sensor 16 in the form of the camera unit 7 detects individual points 4 of the pre-drawn line or the tear line 14.
  • the sensor 16 for detecting the tear line 14 uses analog image processing, which divides the monitoring area 68 into individual search lines 6 without digital image processing uses.
  • the use of the camera unit 7 is particularly advantageous in the case of analog image processing since no computation-intensive digital image processing is required in this way.
  • the collected sensor information or the associated data to the detected points 4 are then from the sensor 16 is forwarded to the arithmetic unit 28, which further processes the detected points 4 and from them interpolates or adapts an actual trajectory 24 (spline).
  • the arithmetic unit 28 can be a microcontroller or another arithmetic unit that appears appropriate to a person skilled in the art.
  • the arithmetic unit 28 calculates or generates control signals and transmits control signals to the adjusting unit 30 for adjustment of the saw blade angle 26.
  • the adjusting unit 30 now adjusts the saw blade angle 26 by means of an actuator with regulator 34 in the form of a stepping motor. the angle ⁇ about the longitudinal axis parallel to the main extension direction 62 of the saw blade 12, in response to the superimposed user guide on the guide knob 54 of the handheld trimming saw 9 accordingly.
  • the sensor 16 can be used for a detection of the set saw blade angle 26 or the determination of the angle of rotation of the saw blade 12.
  • An additional and alternative embodiment is the integration of a determination of a feed rate.
  • optical mouse sensors 5 are arranged, which determine the speed and a direction of movement preferably in the x and / or y direction (see Figure 3).
  • FIG. 4 shows a further possibility for determining the feed rate.
  • a simple impeller with rotary encoder 32 such as a rolling element 86 is provided with corresponding light barriers 88.
  • other approaches are conceivable in principle, such as the comparison of individual camera images by means of the computing unit 28.
  • the system can be implemented without a speed measurement.
  • the hand-saw 9 When using the hand-saw 9 or in a sawing process, the hand-saw 9 is guided manually by means of the main handle 46 and the guide knob 54 by an operator, wherein the cutting direction has to be roughly specified by the operator.
  • the system of control means 10, 100 and / or sensor 16 and setting unit 30 is only responsible for the fine control, which compensates for inaccuracies in the saw blade run and / or the user guidance.
  • this system is only to be seen as a supporting system, ie if no tear line 14 can be detected (line end, multiple lines) the system outputs an alarm via an acoustic and / or optical unit 90, stabilizes the current saw blade angle 26 and the operator is on overall is provides, as with conventional jigsaws too. There is no active intervention. If desired, the system, to which one or more means can be assigned and with which tracking of the saw blade 12 and / or the hand saw 9 along tear lines 14 can be automated, can also be switched off manually at any time by the operator.
  • the system advantageously comprises the actuator 2, at least one speed-determining sensor, such as the optical mouse sensor 5, the control means 10 in the form of the sensor 16 and the camera unit 7, the control means 100 in the form of the actuator 30 and the actuator with controller 34
  • a switch 92 is provided on the machine housing 44 in the region of the main handle 46 for this purpose.
  • a display element 36 such as LEDs, for example
  • This display element 36 is provided to indicate a feed direction 38 to be taken, for example symbolized by an arrow symbol 96 composed of light-emitting diodes or LEDs 40. This indicates to the operator which direction the saw movement needs to be corrected.
  • the display element 36 serves to allow the operator to maintain an optimal working range, which represents an angular range of the possible saw blade angle 26.
  • a blower 98 is provided to improve the view, can be removed or sucked by means of the machining process residues incurred during the sawing process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sawing (AREA)

Abstract

L'invention concerne une scie à main à mouvement alternatif, notamment une scie sauteuse (= scrolling jigsaw =). Selon l'invention, il est prévu des moyens de commande (10, 100) qui permettent d'automatiser le suivi de lignes de tracé (14) par une lame de scie (12) et/ou par la scie à main à mouvement alternatif.
EP07820404A 2006-11-09 2007-09-20 Scie à main à mouvement alternatif Withdrawn EP2089178A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610052808 DE102006052808A1 (de) 2006-11-09 2006-11-09 Handhubsägemaschine
PCT/EP2007/059965 WO2008055738A1 (fr) 2006-11-09 2007-09-20 Scie à main à mouvement alternatif

Publications (1)

Publication Number Publication Date
EP2089178A1 true EP2089178A1 (fr) 2009-08-19

Family

ID=38829606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07820404A Withdrawn EP2089178A1 (fr) 2006-11-09 2007-09-20 Scie à main à mouvement alternatif

Country Status (6)

Country Link
US (2) US8826548B2 (fr)
EP (1) EP2089178A1 (fr)
CN (2) CN101534987B (fr)
DE (1) DE102006052808A1 (fr)
RU (1) RU2465988C2 (fr)
WO (1) WO2008055738A1 (fr)

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US10067495B2 (en) 2011-05-19 2018-09-04 Shaper Tools, Inc. Automatically guided tools
US10556356B2 (en) 2012-04-26 2020-02-11 Sharper Tools, Inc. Systems and methods for performing a task on a material, or locating the position of a device relative to the surface of the material

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JP6678314B2 (ja) * 2015-03-12 2020-04-08 パナソニックＩｐマネジメント株式会社 切断工具
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CN107530878B (zh) 2015-05-13 2021-01-08 整形工具股份有限公司 用于被引导工具的系统、方法和设备
TWM545024U (zh) 2016-01-05 2017-07-11 米沃奇電子工具公司 用於電動工具的減震系統
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Also Published As

Publication number Publication date
RU2465988C2 (ru) 2012-11-10
CN102717152B (zh) 2015-08-05
US20120000080A1 (en) 2012-01-05
US8826548B2 (en) 2014-09-09
RU2009121647A (ru) 2010-12-20
CN101534987B (zh) 2013-06-19
CN102717152A (zh) 2012-10-10
WO2008055738A1 (fr) 2008-05-15
CN101534987A (zh) 2009-09-16
US20090025233A1 (en) 2009-01-29
DE102006052808A1 (de) 2008-05-15

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