EP3848159A1 - Système et procédé de surveillance d'un alignement d'une machine-outil - Google Patents

Système et procédé de surveillance d'un alignement d'une machine-outil Download PDF

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Publication number
EP3848159A1
EP3848159A1 EP20151127.6A EP20151127A EP3848159A1 EP 3848159 A1 EP3848159 A1 EP 3848159A1 EP 20151127 A EP20151127 A EP 20151127A EP 3848159 A1 EP3848159 A1 EP 3848159A1
Authority
EP
European Patent Office
Prior art keywords
machine tool
alignment
subsurface
angle
slot
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Withdrawn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
EP20151127.6A
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German (de)
English (en)
Inventor
Christian Sattler
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Priority to EP20151127.6A priority Critical patent/EP3848159A1/fr
Publication of EP3848159A1 publication Critical patent/EP3848159A1/fr
Withdrawn legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25FCOMBINATION 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
    • B25F5/00Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25FCOMBINATION 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
    • B25F5/00Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02Construction of casings, bodies or handles
    • B25F5/021Construction of casings, bodies or handles with guiding devices

Definitions

  • the present invention relates to a system and a method for monitoring an alignment of a machine tool with which a slot can be produced in a subsurface.
  • the machine tool can preferably be a slitting or cutting device.
  • An essential advantage of the invention is that the alignment of the machine tool can be displayed on a display device, the display device being part of the machine tool. In this way, the user of the machine tool can dispense with time-consuming drawing and monitoring of the alignment and the alignment angle, and a glance at the display device is sufficient for the user to obtain an overview of the alignment of the machine tool. As a result, work with the machine tool can be made easier, in particular at work locations that are difficult to access, and the quality of the slitting or cutting work can be increased through improved alignment.
  • slots can be made in a substrate.
  • the slots can later be used, for example, to lay supply lines, such as electrical cables.
  • the slots are used to cut open a subsurface and to separate different areas of the subsurface from one another.
  • the present invention relates in particular to cutoff grinders or slitting devices.
  • precise alignment of the slot to be produced is often necessary. For example, orientations such as 90 ° vertically or 0 ° horizontally may be required to create accurate slots.
  • the slot is made at a right angle to the machined surface, if possible.
  • the alignment of the slot to the surface of the subsurface can often not be done with the machine tool be checked by yourself. Instead, it is usually necessary to make a complex drawing on the subsurface.
  • the angle to the machined surface is predetermined by surfaces or rollers on the machine tool.
  • these areas and roles are often spatially limited.
  • the object on which the present invention is based is therefore to overcome the disadvantages and deficiencies of the prior art described above and to provide a system and method for monitoring an alignment of a machine tool so that technical means can be used on the machine tool, in order to be able to better monitor the alignment of the machine tool or the slot to be produced in relation to a surface of the subsurface to be processed.
  • the use of the invention should make it possible to dispense with the complex marking, as is known from the prior art.
  • the invention is intended to contribute to the fact that the user of the machine tool can quickly get an overview of the current alignment of the machine tool without having to put the machine tool down or interrupt operation.
  • a distance sensor is sufficient to monitor a working angle of the machine tool. If this distance is not known, it may be preferred in the context of the invention to provide a second distance sensor with which this distance can be determined.
  • the first distance sensor has an essentially fixed or constant distance from the substrate to be processed.
  • the system can have a further distance sensor which is set up to determine a distance between the surface to be processed and an adjacent surface. This further distance sensor can preferably be used to position the machine tool and / or to define a distance to the adjoining surface in order to advantageously enable a substantially parallel slot course to the adjoining surface.
  • the machine tool can preferably be a slitting or cutting device with which a slot can be produced in a substrate.
  • a slot represents an elongated depression in a subsurface or masonry, which is usually a few centimeters wide and can have a length of up to several meters.
  • the recess usually has an essentially rectangular basic shape and can be used, for example, to accommodate electrical cables or other supply lines.
  • the monitoring system has at least one distance sensor with a fixed distance from the ground or, with a variable distance from the ground, two distance sensors, which are preferably arranged on each side of a tool of the machine tool.
  • the tool of the machine tool is preferably also referred to as a blade or disk in the context of the invention.
  • the two distance sensors are arranged on both sides next to the blade or the cutting disk of the cutting or slitting device.
  • the distance sensors are preferably set up to monitor an angle of the machine tool in relation to a surface of the subsurface to be processed by the machine tool.
  • alignment of the machine tool or "angle of the machine tool in relation to a surface of the substrate” is preferably understood in the sense of the invention in such a way that it also means the alignment of the slot to be produced in relation to the surface of the substrate. It is In the context of the invention, it is preferred that the slot is usually produced at a 90 ° angle or at a right angle to the surface of the subsurface to be processed by the machine tool.
  • the surface of the subsurface is preferably idealized as a flat plane. This can enclose an angle with a virtual straight line that embodies the orientation of the slot, this angle being in a range from 85 to 95 °, preferably in a range from 88 to 92 ° and most preferably 90 °.
  • the virtual straight line that embodies the alignment of the slot can correspond to an outer wall of the slot or a delimitation of the surface to be processed.
  • the term "essentially” is not an unclear formulation for the person skilled in the art, because the person skilled in the art knows that in the context of the present invention, minor deviations, for example from mathematically correct parallelism, can easily occur due to the nature of the substrate or masonry to be processed. Smaller manufacturing-related deviations of, for example, less than 5 ° are also regarded as "essentially parallel" in the context of the invention.
  • the angle of the slot in relation to the surface of the subsurface can preferably be determined in a particularly simple manner.
  • the use of the distance sensors is particularly indicated when the machine tool is being used on a subsurface that corresponds to the ground or some other ground surface.
  • the angle between the side walls of the slot and the surface of the subsurface can then be determined (cf. Fig. 1 : Detail drawing C / c).
  • the determined angle data can be transmitted to a control device of the machine tool or directly to the display device of the monitoring system.
  • the display device is preferably set up to display the determined angle and orientation data.
  • the angle and orientation data are processed using information technology before they are displayed and prepared in such a way that they can be displayed on the display device in a quickly detectable manner. This processing or preparation of the data determined by the sensors can take place, for example, with the control device, which is an optional component of the proposed monitoring system or of the machine tool.
  • the monitoring system further comprises an acceleration sensor, which is preferably set up to detect the acceleration due to gravity, so that a horizontal and a vertical alignment of the machine tool can be determined on the basis of the determined acceleration due to gravity.
  • the use of the acceleration sensor is particularly indicated when working with the machine tool on a substrate that corresponds to a side wall or a wall that runs essentially perpendicular to a floor surface (cf. Fig. 1 : Detailed drawings A / a and B / b).
  • the acceleration sensor can be used to detect particularly well whether a slot course oriented essentially at right angles is cut into a vertically standing wall.
  • the use of the acceleration sensor is particularly preferred when the machine tool is switched off, i.e. is in a switched-off state. In the context of the invention, this state can also be referred to as "non-operation of the machine tool".
  • the advantage of using acceleration sensors is that they can be manufactured and installed inexpensively, so that an inexpensive machine tool or an inexpensive monitoring system can be provided by using acceleration sensors.
  • the proposed monitoring system can comprise a gyro sensor.
  • the gyro sensor is preferably set up to detect a vertical and / or horizontal alignment of the machine tool.
  • the gyro sensor is set up to detect a movement from the horizontal and / or vertical alignment of the machine tool.
  • the use of the gyro sensor is particularly advantageous because it can be used to determine or monitor the alignment of the machine tool or the alignment of the slot with respect to the surface of the subsurface to be processed, even during operation of the machine tool.
  • Gyro sensors are particularly robust with respect to vibrations, so that by using a gyro sensor, machine tools or monitoring systems can be provided which are particularly robust and less prone to errors with respect to vibrations.
  • the proposed system can furthermore comprise a magnetometer for detecting an alignment of the machine tool in a horizontal plane. In this way, cuts on the floor can advantageously be carried out in a particularly straight line.
  • the data determined by the acceleration sensor, the gyro sensor and / or the magnetometer are preferably also forwarded to the display device so that they can be displayed by the display device.
  • the display device is an LED display or a display.
  • the LED display or the display can be arranged at a point on the machine tool that is easily visible to the user of the machine tool, so that the user can see the display device particularly well, especially during operation of the machine tool. He can thereby record the information provided on the display device particularly quickly and, if necessary, adapt or change his working behavior with the machine tool or the positioning and / or posture of the machine tool to the transmitted information.
  • one of the two steps c1 and c2 is carried out within the framework of the proposed method, or both method steps. This depends in particular on the sensors with which the machine tool used or the monitoring system is equipped. Tests have shown that with the proposed monitoring method, work with the machine tool or the creation of accurate slots, which are preferably created at a right angle to the surface of a substrate to be machined, can be significantly simplified. This also improves the accuracy with which one can work on the construction site, which can have a positive effect on the quality of the entire construction or renovation project.
  • the proposed method can be a further one Method step c3 include, after which a horizontal and / or a vertical alignment of the machine tool is determined by a magnetometer.
  • an additional, optional method step c3 of the proposed method relates to the determination of a horizontal and / or vertical alignment of the machine tool by means of a magnetometer.
  • the sensors such as the acceleration sensor, the gyro sensor and / or the magnetometer, can be used to detect an orientation specified by the user.
  • the performance spectrum of the proposed system can advantageously be further increased in order to provide the user of the system with optimal support when using the machine tool.
  • a first and a second distance sensor are used to determine the angle of the machine tool to the surface of the subsurface to be processed. It has been shown that the use of two distance sensors enables a good compromise between the production costs to be kept low for the machine tool and the quality of the data to be determined.
  • the two distance sensors - viewed from above onto the machine tool in a plan view - are preferably arranged on the right and left side of the sheet or the (cutting) disk of the machine tool. In particular, the distance sensors are arranged symmetrically, which simplifies the evaluation of the measured values obtained, since fewer calibration calculations have to be carried out.
  • the blade or the cutting disc acts as an axis of symmetry for the preferably symmetrical arrangement of the two distance sensors. It has been shown that the distance sensors are particularly well suited for monitoring or determining an alignment of the machine tool with respect to a subsurface if the subsurface is a ground or a floor area.
  • an acceleration sensor and / or a gyro sensor is used to determine a horizontal and a vertical alignment of the machine tool.
  • the acceleration sensor is preferably used in particular when the machine tool is not in operation, while the gyro sensor and the magnetometer can advantageously also be used during operation of the machine tool, since the gyro sensor reacts particularly robustly to vibrations.
  • the acceleration due to gravity is detected and evaluated in order to determine the horizontal and vertical alignment of the machine tool with the acceleration sensor.
  • the determination of a horizontal and a vertical alignment of the machine tool by means of an acceleration sensor and / or a gyro sensor can particularly be carried out on vertically standing side walls can be used, that is to say with walls that are, for example, essentially perpendicular to a floor surface or a ground.
  • the invention relates to a sensor system and a possibility to display the alignment and angle to the surface on a machine tool.
  • the acceleration sensor is provided in particular for detecting the horizontal and vertical alignment of the machine tool with respect to a subsurface, the subsurface being able to be a ground, a floor surface or a side wall, the side wall preferably being oriented essentially perpendicularly with respect to the ground.
  • the invention can determine the alignment of the slot to be produced with the machine tool in relation to the surface of a subsurface.
  • the proposed monitoring system can be used to record the acceleration due to gravity.
  • An acceleration sensor for example, can be used for this purpose.
  • the acceleration sensor is preferably used before or after the operation of the machine tool, while the gyro sensor can advantageously also be used during operation of the machine tool in order to detect a horizontal and a vertical alignment of the machine tool or the slot.
  • the proposed monitoring system comprises, for example, two distance sensors, which are preferably arranged on both sides next to the sheet or the cutting disc. The distance sensors are preferably used to determine the angle between the tool of the machine tool and the surface of the subsurface. In the context of the invention, it can also be preferred that the distance sensors determine an angle between the slot to be generated and the surface of the subsurface.
  • the proposed monitoring system can comprise a display device on the device, which can be designed as an LED or display.
  • Figure 1 shows possible orientations and angles between the machine tool or the slot to be produced and the surface of a subsurface, wherein the subsurface can be a floor surface or a side wall.
  • the bottom surface or the ground or the side wall are in the middle of the Fig. 1 indicated. It is preferred in the context of the invention that the ground or the floor surface is idealized as a flat, horizontally oriented surface.
  • the side wall is preferably designed to be essentially perpendicular or orthogonal with respect to the ground. Preferably, the side wall is oriented vertically upright.
  • Fig. 1 two different cutting or slot options are shown, which are designated with the letters A / a and B / b.
  • the capital letter denotes the schematic representation of the alignment of the machine tool or the slot in relation to the surface of the subsurface. These representations are located outside of the in Fig. 1 side wall and floor area shown.
  • the hatched, dark rectangle symbolizes the background.
  • the dark line that protrudes into the substrate stands for the cut or slot that is created in the substrate.
  • the line protruding from the rectangle, ie the subsurface preferably symbolizes the position or the orientation of the tool of the machine tool in relation to the surface of the subsurface.
  • the orientation of the tool of the machine tool preferably correlates with the orientation of the carving or cut that is produced with the machine tool.
  • the curved arrow indicates a possible angle between the tool and / or slot on one side and the surface of the substrate on the other side. In the context of the invention, this angle is preferably in a range of 90 °, so that the slot is aligned at a right angle with respect to the surface of the subsurface.
  • FIG. 1 The detailed drawings A / a and B / b preferably represent the horizontal and vertical cut or slot options on the side wall of the symbolically in Fig. 1 It is preferred within the meaning of the invention that for the determination of the horizontal and / or vertical alignment of the machine tool or the slot in relation to the surface of a subsurface that is formed by a vertically standing side wall, an acceleration and / or gyro sensor is used.
  • the detail drawing C / c shows a possible cut in the ground or in a floor area of the in Fig. 1 construction site represented symbolically.
  • the machine tool or the slot produced can be tilted to the side, ie to the right or left.
  • the machine tool or the generated slot can be tilted up or down, ie in the vertical direction.
  • the proposed invention helps to identify such tilts and deviations from the desired right angle particularly quickly, so that the position and work with the machine tool can be changed quickly by the user in order to subsequently generate a slot at a 90 ° angle again.
  • the lower case letter denotes the schematic representation of the arrangement of the cut or slot within the wall or floor surface. These representations are located within the in Fig. 1 side wall and floor area shown.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
EP20151127.6A 2020-01-10 2020-01-10 Système et procédé de surveillance d'un alignement d'une machine-outil Withdrawn EP3848159A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20151127.6A EP3848159A1 (fr) 2020-01-10 2020-01-10 Système et procédé de surveillance d'un alignement d'une machine-outil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20151127.6A EP3848159A1 (fr) 2020-01-10 2020-01-10 Système et procédé de surveillance d'un alignement d'une machine-outil

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EP3848159A1 true EP3848159A1 (fr) 2021-07-14

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1249291A2 (fr) * 2001-04-10 2002-10-16 HILTI Aktiengesellschaft Dispositif de positionnement pour outil à main
US20050251294A1 (en) * 2004-05-06 2005-11-10 John Cerwin Electronic Alignment System
DE102016102753A1 (de) * 2016-02-17 2017-08-17 Vorwerk & Co. Interholding Gmbh Handwerkzeug mit Lagebestimmung und Verfahren zur Lagebestimmung eines Handwerkzeuges

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1249291A2 (fr) * 2001-04-10 2002-10-16 HILTI Aktiengesellschaft Dispositif de positionnement pour outil à main
US20050251294A1 (en) * 2004-05-06 2005-11-10 John Cerwin Electronic Alignment System
DE102016102753A1 (de) * 2016-02-17 2017-08-17 Vorwerk & Co. Interholding Gmbh Handwerkzeug mit Lagebestimmung und Verfahren zur Lagebestimmung eines Handwerkzeuges

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