WO2021008714A1 - Procédé pour faire fonctionner une machine à scier et machine à scier - Google Patents

Procédé pour faire fonctionner une machine à scier et machine à scier Download PDF

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Publication number
WO2021008714A1
WO2021008714A1 PCT/EP2019/069448 EP2019069448W WO2021008714A1 WO 2021008714 A1 WO2021008714 A1 WO 2021008714A1 EP 2019069448 W EP2019069448 W EP 2019069448W WO 2021008714 A1 WO2021008714 A1 WO 2021008714A1
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WO
WIPO (PCT)
Prior art keywords
sawing
tool
sawing tool
saw
determined
Prior art date
Application number
PCT/EP2019/069448
Other languages
German (de)
English (en)
Inventor
Christian Behringer
Original Assignee
Behringer 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 Behringer Gmbh filed Critical Behringer Gmbh
Priority to PCT/EP2019/069448 priority Critical patent/WO2021008714A1/fr
Publication of WO2021008714A1 publication Critical patent/WO2021008714A1/fr

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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
    • 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
    • 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
    • B23D53/00—Machines or devices for sawing with strap saw-blades which are effectively endless in use, e.g. for contour cutting

Definitions

  • the invention relates to a method for operating a sawing machine, in particular a band sawing machine.
  • the invention also relates to a sawing machine.
  • EP 3 482 859 A1 discloses a machine tool, in particular a sawing machine, with a tool for metal cutting, in particular a saw band or saw blade, a drive device for driving and / or moving the tool, a control device for the drive device to drive the drive device to control and / or regulate with a process data set, as well as with a communication device for data exchange between the control device and an external data memory and / or an external computer.
  • the control device comprises detection means for identifying the tool.
  • the invention is based on the object of providing a method for operating a sawing machine which can be used in many ways and enables a sawing process to be carried out with little disruption.
  • this object is achieved in the above-mentioned method in that a sawing process is carried out by means of a sawing tool of the sawing machine, that an automatic examination of the sawing tool is carried out before or during the sawing process, that one or more properties of the sawing tool are determined during the examination, and that the sawing process is controlled and / or regulated as a function of one or more of the properties of the sawing tool determined.
  • an automatic examination of the sawing tool is carried out. This enables the sawing tool to be identified, on the basis of which, for example, suitable work values for the sawing process can be automatically set.
  • damage points and / or wear points on the sawing tool can be identified, whereupon the work values for performing the sawing process can be automatically adjusted.
  • the working feeds are adapted so that the damaged saw teeth are subject to less stress during the sawing process.
  • the sawing process can be adapted to individual properties of the sawing tool through the automatic examination of the sawing tool and in particular through an automatic detection of damage points and / or wear points on the sawing tool. This results in trouble-free operation of the sawing machine.
  • the sawing tool is a saw band.
  • the saw band is designed for example as an endless band.
  • the saw band has a Length from approx. 3000 mm to 20000 mm.
  • the saw band is operated, for example, at a speed of 5 m / min to 200 m / min.
  • a saw tooth needs about 20 s for one complete revolution with the saw band.
  • a corresponding saw tooth of the saw band hits a workpiece to be sawed, for example, about every 20 s.
  • the sawing tool is a circular saw tool.
  • a type designation and / or type identifier of the sawing tool is determined.
  • information about the corresponding sawing tool is determined by comparing the type designation and / or type identifier with a database device.
  • a number of saw teeth of the sawing tool per unit of length is determined.
  • a tooth pitch of the sawing tool can be determined, the tooth pitch being a number of saw teeth per unit of length.
  • a distinction is made, for example, between a constant tooth pitch, in which the saw teeth have a uniform tooth spacing, and a variable tooth pitch, in which the saw teeth each have different tooth spacings within a length unit.
  • a material is determined from which saw teeth of the sawing tool are made or which include saw teeth of the sawing tool.
  • One for the saw teeth of the The material used for the sawing tool is, for example, bi-metal or hard metal.
  • a coating of saw teeth of the sawing tool is determined.
  • a tooth shape and / or a tooth position of saw teeth of the sawing tool are determined.
  • the saw teeth have, for example, a claw tooth shape or a trapezoidal tooth shape.
  • a deflection and / or orientation of the saw teeth to the left or right with respect to a center plane of the sawing tool is determined. From this, for example, a type of set of the sawing tool can be determined, with z. B. a distinction is made between a cross set and a wave set.
  • one or more of the properties of the sawing tool determined are compared with sawing tool data stored in a database device. For example, conclusions can be drawn from a recognized property of the sawing tool about other properties of the sawing tool.
  • the sawing tool is identified after a new sawing tool has been inserted into the sawing machine, and / or that the sawing tool is identified before the sawing process.
  • optimized and / or suitable work values can be automatically set for the respective sawing tool.
  • a determination and / or setting of Work values for performing the sawing process takes place, and in particular if, on the basis of the properties determined, a setting of a work feed of the sawing tool with respect to a workpiece to be sawed and / or a setting of a feed speed of a saw frame of the sawing machine and / or a setting of one of the sawing tool towards one cutting force and / or a setting of a speed of the sawing tool with respect to a workpiece to be sawed and / or a setting of a rotational frequency of the sawing tool with respect to a workpiece to be sawed takes place.
  • One or more of the work values mentioned are set in an automated manner, in particular.
  • the working feed rate is to be understood in particular as a relative speed of the saw frame and / or of the sawing tool to a workpiece to be sawed in the cutting direction. This speed of the saw frame is referred to below as the feed speed.
  • the speed of the sawing tool is to be understood in particular as a relative speed of the sawing tool to the saw frame and / or the speed of the sawing tool is to be understood as a speed of the sawing tool in the longitudinal direction and / or circumferential direction of the sawing tool.
  • the sawing tool is provided with a coding and that one or more properties for identifying the sawing tool are determined by reading out the coding, wherein the coding comprises in particular a QR code arranged on the sawing tool.
  • one or more properties for identifying the sawing tool are determined using RFID technology.
  • the sawing tool has an RFID transmitter and / or the sawing machine has an RFID receiver.
  • damage points and / or wear points on the saw tool are determined during the inspection of the sawing tool on the sawing tool, and in particular if a position of the existing damage points and / or wear points on the sawing tool is determined. In this way, the sawing process can be controlled in a targeted manner as a function of damage points and / or wear points on the sawing tool.
  • the sawing tool is examined for the presence and in particular for a position of a height offset between a first sub-area and a second sub-area of the sawing tool, the first sub-area and the second sub-area being separated from one another in particular by a joint of the sawing tool.
  • the joint is, for example, a weld seam.
  • the height offset is to be understood as a distance and / or an offset of the first partial area and the second partial area of the sawing tool in the vertical direction of the sawing tool.
  • the sawing tool is examined for the presence and in particular for a position of a lateral offset between a first sub-area and a second sub-area of the sawing tool, the first sub-area and the second sub-area being separated from one another in particular by a joint of the sawing tool.
  • the lateral offset is to be understood as a distance and / or an offset between the first sub-area and the second sub-area of the sawing tool in a thickness direction of the sawing tool, the thickness direction being oriented in particular perpendicular to a height direction of the sawing tool.
  • the sawing tool is examined for the presence and in particular for a position of a directional offset between a first sub-area and a second sub-area of the sawing tool, the first sub-area and the second sub-area being separated from one another in particular by a joint of the sawing tool.
  • the direction offset is to be understood as an angle between the first sub-area and the second sub-area.
  • the direction offset is to be understood as a smallest angle between a first edge of the sawing tool arranged in the first partial area and a second edge of the sawing tool arranged in the second partial area.
  • the sawing tool is examined for the presence and in particular for a position of damaged and / or worn saw teeth of the sawing tool.
  • the sawing tool is examined for the presence and in particular for a position of an incorrect sequence of saw teeth of the sawing tool.
  • the sawing tool is examined for the presence and in particular for a position of saw teeth of the sawing tool which have an incorrect spacing.
  • the saw teeth of the sawing tool are examined for the presence of a broken tooth and / or for the presence of a damaged and / or worn tooth edge. It leaves thereby specifically avoiding stress on damaged and / or worn saw teeth of the sawing tool.
  • a position of a joint located on the sawing tool is determined during the examination of the sawing tool, and if the sawing tool is examined at the joint and / or in an area of the joint for existing damage and / or wear.
  • the sawing tool typically has a manufacturing-related joint.
  • the joining point of the sawing tool is, for example, a weld seam and / or a connection point and / or an adhesive point.
  • Manufacturing errors and / or damage to the sawing tool occur particularly frequently at the joint.
  • a targeted examination of the sawing tool at the joint optimizes the determination of damage points.
  • an orientation and / or a distance between saw teeth of the saw tool is determined with respect to a center plane of the saw tool.
  • a detection is carried out as to whether the saw teeth are oriented to the left or to the right with respect to the center plane.
  • the orientation and / or the distance with respect to the central plane of a saw tooth arranged in front of a joint of the sawing tool is determined and if the orientation and / or the distance with respect to the central plane of a saw tooth arranged after the joint is determined.
  • the saw teeth arranged at the joint of the sawing tool can thereby be examined in a targeted manner.
  • a distance, and in particular an average distance, from mutually adjacent saw teeth of the sawing tool is determined.
  • an average tooth spacing of saw teeth can be determined.
  • an incorrect distance between two adjacent saw teeth can be determined.
  • a distance between a saw tooth arranged in front of a joining point of the sawing tool and a saw tooth arranged after the joining point is determined. This makes it possible to determine an incorrect distance between saw teeth at the joint.
  • a shape and / or geometry of an examined saw tooth is compared with a predetermined shape and / or geometry of saw teeth of the sawing tool. Damaged and / or worn saw teeth of the sawing tool can thereby be determined by means of image recognition.
  • the predetermined shape and / or geometry of a saw tooth is stored in a database device.
  • a comparison of a shape and / or geometry of a saw tooth with the specified shape and / or geometry can thereby be carried out.
  • a sensory and, in particular, optical examination of the sawing tool is carried out, with an examination of the sawing tool in particular being carried out by means of image recognition.
  • the sawing tool can thereby be examined in a technically simple manner. For example, an examination of the sawing tool to identify the sawing tool and / or an examination of the sawing tool to determine damage points and / or wear points of the sawing tool is carried out by means of image recognition.
  • damage points and / or wear points and in particular a position of damage points and / or wear points on the saw tool are determined by the sensory and, in particular, optical examination.
  • the properties of the sawing tool for identifying the sawing tool are determined by the sensory and / or optical examination.
  • the examination of the sawing tool with regard to one or more properties of the sawing tool takes place after a new sawing tool has been placed in the sawing machine and / or if the examination of the sawing tool with regard to one or more properties of the sawing tool is carried out before a sawing process.
  • damage points and / or wear points on the sawing tool can be known, for example, before the sawing process is carried out.
  • the sawing tool can be identified before the sawing process is carried out. This enables working values that are optimized for the sawing process to be set before the sawing process begins.
  • the examination of the saw tool with regard to one or more properties of the saw tool takes place during a sawing process and in particular continuously during the sawing process.
  • This enables, for example, an examination of the sawing tool in an operating state of the machine and / or during a cutting process of a workpiece. In this way, for example, the sawing process can be carried out without interruption and / or without interruption.
  • the sawing tool is examined with regard to damage points and / or wear points on the sawing tool during a sawing process and in particular continuously during the sawing process.
  • a working feed of the sawing tool with respect to a workpiece to be sawed and / or a cutting force of the sawing tool exerted on a workpiece to be sawed and / or a feed speed of a Saw frame of the sawing machine and / or a speed of the sawing tool with respect to a workpiece to be sawed and / or a rotational frequency of the sawing tool with respect to a workpiece to be sawed is controlled and / or regulated. This means that the sawing process can be optimally adapted to the properties of the sawing tool.
  • the saw frame of the sawing machine is in particular arranged so as to be movable and / or displaceable relative to the workpiece to be sawed.
  • the saw frame is movably and / or slidably disposed relative to a holding element on which the workpiece to be sawed is disposed and / or clamped.
  • the sawing process is automatically interrupted and / or aborted when a certain damage to the sawing tool is determined.
  • an automatic change of at least one work value of the sawing process takes place, so that an area of the sawing tool around the damage point and / or wear point is included the sawing process is left out. In this way, further damage or further wear and tear of the sawing tool at the damage point and / or wear point can be avoided. This also makes it possible to avoid damage to the workpiece from the damage point and / or wear point of the sawing tool.
  • the change in the at least one work value includes that a work feed rate of the sawing machine is reduced or interrupted with respect to a workpiece to be sawn, and / or that a cutting force exerted on a workpiece to be sawed is reduced and in particular reduced to zero, and / or that a feed speed of a saw frame of the sawing machine is reduced and in particular reduced to zero, and / or that a speed of the saw tool is reduced with respect to a workpiece to be sawed, and / or that a rotational frequency of the saw tool with respect to a workpiece to be sawed is reduced.
  • This makes it possible to avoid further damage and / or further wear and tear of the sawing tool at the point of damage and / or wear.
  • the change in the at least one work value takes place when a distance or distance range from the damage point and / or wear point of the sawing tool to the workpiece is not reached, and in particular if the damage point and / or wear point exceeds the distance or distance range the at least one work value is adjusted to an original value.
  • the sawing process is only impaired by the point of damage and / or the point of wear of the sawing tool if the point of damage and / or point of wear is within the distance or distance range to the workpiece.
  • the sawing process can be continued efficiently despite a damage point and / or wear point on the sawing tool.
  • An original value is to be understood as a value before the automatic change due to the point of damage and / or the point of wear of the sawing tool.
  • the at least one work value is adjusted to an original value. This allows the sawing process to be carried out efficiently.
  • properties determined during the examination of the saw tool are stored, and in particular that a wear behavior of the saw tool is determined from the stored properties.
  • a wear behavior of the saw tool is determined from the stored properties.
  • a long-term wear behavior of the sawing tool can be determined.
  • information on the quality of the sawing tool used can be determined.
  • the properties determined during the examination of the sawing tool are stored in a database device.
  • a sawing machine in particular a band sawing machine, comprising a sawing tool for performing a sawing process, a sensor device for examining the sawing tool, where one or more properties of the sawing tool can be determined during the examination, and wherein the sensor device is connected to a control device of the sawing machine for controlling and / or regulating the sawing process as a function of one or more of the determined properties of the sawing tool is connected in a signal-effective manner.
  • the sawing machine according to the invention has in particular one or more features and / or advantages of the method according to the invention.
  • the method according to the invention can be carried out by means of the sawing machine according to the invention.
  • the sensor device has at least one sensor for identifying the sawing tool and / or for determining points of damage and / or areas of wear present on the sawing tool.
  • the at least one sensor comprises an optical sensor and / or a camera and / or an acoustic sensor and / or a distance sensor and / or a tactile sensor and / or an RFID sensor. This enables an extensive examination of the sawing tool. A large number of different properties of the sawing tool can be recorded in this way.
  • the at least one sensor has a camera.
  • the camera can be used to perform image recognition of properties and / or features of the sawing tool.
  • the at least one sensor is arranged in an area of a guide element of the sawing machine for the sawing tool and / or in an area of a saw frame of the sawing machine.
  • the sensor device comprises, for example, several sensors which are or can be arranged at different positions of the sawing machine. This allows different areas of the sawing tool to be monitored in a technically simple manner and, in particular, to be monitored at the same time.
  • the at least one sensor is arranged on the saw frame of the sawing machine.
  • the guide element in the area of which the at least one sensor is preferably arranged, is, for example, a band guide element for guiding a saw band during a sawing process.
  • the sensor device has an image recognition device for examining the sawing tool.
  • the image recognition device can be used to determine, for example, properties of the sawing tool for identifying the sawing tool and / or damage points and / or wear points of the sawing tool.
  • the sensor device is connected to a saw frame drive of the sawing machine and / or to a sawing tool drive of the sawing machine, or if a saw frame drive of the sawing machine and / or a sawing tool drive of the sawing machine can be switched by means of the sensor device via the control device of the sawing machine is.
  • the sawing process and in particular work values of the sawing process can be controlled and / or regulated by means of the sensor device via the control device of the sawing machine.
  • the saw frame drive and / or the saw tool drive of the sawing machine can thereby be controlled and / or regulated by means of the sensor device.
  • control device and / or the sensor device have an evaluation device for evaluating recorded data from the sawing tool, the evaluation device calculating in particular working values for performing the sawing process on the basis of the recorded data.
  • the calculated work values are transmitted, for example, to the control device of the sawing machine, and in particular transmitted to the control device during the sawing process.
  • the work values calculated by the evaluation device can be set on the control device. The sawing process can then in particular due to the work values calculated by the evaluation device would have been carried out.
  • the sensor device and / or the control device comprise a database device and / or can be connected to a database device in a signal-effective manner.
  • type information on sawing tools and / or information on a sawing tool used with the sawing machine are stored and / or storable in the database device.
  • FIG. 1 shows a schematic representation of a control device with a sensor device of a sawing machine according to the invention connected thereto;
  • Figure 2 is a schematic side view of an embodiment of a
  • Figure 3 is an illustration of a section of a saw band for Ver
  • FIG. 4 shows a representation of a saw band with a height offset at a joint of the saw band
  • FIG. 5 shows a representation of a saw band with a lateral offset at a joint of the saw band, the saw band being shown in a view from above;
  • FIG. 6 shows an illustration of a saw band with a direction offset at a joint of the saw band
  • FIG. 7a shows a representation of a saw band with an incorrect sequence of saw teeth at a joint of the saw band
  • FIG. 7b shows a schematic sectional view of a section along the line
  • FIG. 8 shows a representation of a saw band with an incorrect spacing of saw teeth at a joint of the saw band
  • FIG. 9 shows a representation of a saw band, a saw tooth of the saw band having a tooth breakout
  • FIG. 10 shows a representation of a saw band, a saw tooth of the saw band having a damaged tooth cutting edge.
  • FIGS. 1 and 2 An exemplary embodiment of a sawing machine according to the invention is shown in FIGS. 1 and 2 and denoted there by 10.
  • the sawing machine 10 is a band sawing machine.
  • the sawing machine 10 has a saw frame 11.
  • the sawing machine 10 has a sawing tool 12 by means of which a sawing process can be carried out.
  • a workpiece 14 can be cut and / or sawed by means of the sawing tool 12.
  • the sawing tool 12 is a saw band 16.
  • the sawing machine 10 comprises in particular two guide elements 18a and 18b which are spaced apart from one another and by means of which the saw band 16 is held and / or guided on the sawing machine 10.
  • the guide elements 18a, 18b are each designed as band saw rollers on which the saw band 16 is arranged circumferentially.
  • the sawing machine 10 furthermore has in particular two band guide elements 19a and 19b which are spaced apart from one another and by means of which the saw band 16 is guided during a cutting process.
  • the tape guide elements 19a and 19b are arranged for example between the guide elements 18a and 18b.
  • band guide elements 19a and 19b By means of the band guide elements 19a and 19b, in particular saw teeth of the sawing tool 12 are brought into a defined alignment and / or position during a sawing process.
  • the sawing machine 10 has a saw tool drive 20, by means of which the saw tool 12 can be driven to carry out a sawing process.
  • the saw tool drive 20 is assigned to at least one of the guide elements 18a, 18b.
  • the guide elements 18a, 18b can be driven by means of the saw tool drive 20 and the saw tool 12 can be driven by means of the guide elements 18a, 18b.
  • a holding element 24 is arranged on which the workpiece 14 is arranged and / or fixed.
  • the sawing machine 10 has a saw frame drive 26 assigned to the saw frame 11, by means of which the saw frame 11 can be driven and / or moved relative to the holding element 24 and / or the workpiece 14.
  • the saw frame drive 26 By means of the saw frame drive 26, for example, the saw frame 11 with the sawing tool 12 can be moved relative to the workpiece 14 arranged on the holding element 24. As a result, a cutting force of the sawing tool 12 can be exerted on the workpiece 14 and a sawing process can thus be carried out on the workpiece 14.
  • the sawing machine comprises a control device 28, which is connected to the sawing tool drive 20 and the saw frame drive 26 in a signal-effective manner.
  • the sawing machine 10 has in particular an operator interface 30 which is connected to the control device 28 in a signal-effective manner.
  • data for identifying the sawing tool 12 and / or work values for carrying out the sawing process can be set via the operator interface 30.
  • a sawing process is carried out by means of the control device 28, for example.
  • control device 28 controls and / or regulates a movement of the saw frame 11 and / or a speed of the saw tool 12 and / or a cutting force exerted on the workpiece 14 by the saw tool 12.
  • the sawing machine 10 comprises a sensor device 32 which is connected to the control device 28 in a signal-effective manner.
  • An automatic examination of the sawing tool 12 can be carried out by means of the sensor device 32, one or more properties of the sawing tool 12 being determined during the examination. It is provided that the sawing process is controlled and / or regulated by means of the sensor device 32 and / or the control device 38 as a function of one or more of the determined properties of the sawing tool.
  • the sensor device 32 comprises one or more sensors 34, which are arranged in particular in a region of the sawing tool 12.
  • a sensor 34a and / or a sensor 34b of the sensor device 32 are each arranged in a region of the guide element 18a and / or 18b.
  • the sensors 34a and / or 34b are, for example, in a region of a cover element 36 for the sawing tool and / or arranged below a cover element 36 for the sawing tool.
  • the sensors 34a and / or 34b are arranged on a side 38 of the sawing machine 10 and / or of the sawing tool 12 opposite the cutting area 22.
  • the cover element 36 is, for example, a housing element of the sawing machine 10.
  • a sensor 34c of the sensor device 32 is arranged on a side 40 of the sawing machine 10 and / or of the sawing tool 12, the side 40 being opposite the side 38 and / or lying on the cutting area 22.
  • the sensor 34c is arranged on or in the cutting area 22, for example.
  • the sensors 34, 34a, 34b, 34c are each connected to the sensor device 32 in a signal-effective manner.
  • the sensors 34 are or include, for example, optical sensors and / or acoustic sensors and / or tactile sensors and / or RFID sensors.
  • the sensors 34 are or include, for example, a camera and / or a light barrier.
  • the sensor device 32 has an image recognition device 42 by means of which the sawing tool 12 can be searched optically and / or by means of image recognition.
  • the sensors 34 is or comprises a camera.
  • an evaluation device 44 is provided, which is assigned to the sensor device 32.
  • the evaluation device 44 may be assigned to the control device 28.
  • the evaluation device 44 is connected to the control device 28 and / or to the sensor device 32 in a signal-effective manner.
  • the evaluation device 44 calculates work values for performing the sawing process, for example on the basis of the data recorded by the sensor device, and transmits these work values to the control device 28.
  • a database device 46 can be provided which is assigned to the sensor device 32 and / or the control device 28.
  • the database device 46 is connected to the control device 28 and / or to the sensor device 32 in a signal-effective manner.
  • Type information and / or reference information on sawing tools 12 that can be used with the sawing machine 10 are stored in the database device 46, for example.
  • the sawing machine 10 works as follows:
  • a sawing tool 12 for example a saw band 16 is inserted into the sawing machine 10 and a workpiece 14 to be cut and / or sawed is arranged on the holding element 24.
  • an automatic examination of the sawing tool 12 is carried out by means of the sensor device 32.
  • the sawing tool 12 is identified by means of this examination, with this identification certain properties of the sawing tool 12 can be determined.
  • the properties of the sawing tool 12 are determined via the sensors 34 of the sensor device 32.
  • This examination of the sawing tool 12 to identify the sawing tool includes, for example, determining a type designation and / or a type identifier of the sawing tool 12, with a QR code 47 and / or a barcode being read out to determine the type designation and / or type identifier (FIG. 3 ), which is arranged on the sawing tool 12.
  • the examination of the sawing tool 12 includes, for example, determining a tooth pitch of saw teeth 48 of the sawing tool 12.
  • the tooth pitch is to be understood as a number of saw teeth 48 per unit length 49.
  • a length of the length unit 49 is, for example, 1 cm to 3 cm and in particular 2.54 cm.
  • the sawing tool 12 and in particular the saw band 16 has saw teeth 48 (FIG. 3), which are, for example, spaced apart from one another by a distance A.
  • the distance A and in particular an average distance A between adjacent saw teeth 48a and 48b of the sawing tool 12 is determined, for example, by means of the image recognition device 42.
  • the examination of the saw tool 12 to identify the saw tool 12 includes, for example, alternatively or additionally the determination of a tooth shape and / or tooth position of the saw teeth 48 of the saw tool 12.
  • the tooth shape and / or the tooth position are determined, for example, by image recognition using the image recognition device 42 and subsequent comparison with a given and / or ideal tooth shape and / or tooth position.
  • tooth shapes and / or tooth positions of sawing tools 12 used as reference for example, in the database facility 46 tooth shapes and / or tooth positions of sawing tools 12 used as reference.
  • the tooth position which is also referred to as offset, for example, is an arrangement and / or bending of the saw teeth 48 to the right or left with respect to a center plane 50 of the sawing tool 12 (identified by R and L in FIG. 3).
  • an orientation and / or a spacing of the saw teeth 48 with respect to the center plane 50 is detected, for example, by means of the image recognition device 42.
  • a material and / or a coating of the sawing tool 12 is determined by means of the sensor device 32.
  • the described identification of the sawing tool 12 takes place in particular after a new sawing tool 12 has been inserted into the sawing machine and / or before a sawing process is carried out.
  • the evaluation device 44 calculates work values for the execution of the sawing process on the basis of the properties determined for the identification of the sawing tool and transmits these work values to the control device 28. For example, the evaluation device 44 calculates a work feed rate of the sawing machine 10 with respect to the workpiece 14 and / or to be sawed a setting of a cutting force and / or a setting of a speed of the sawing tool 12.
  • the working feed rate is to be understood in particular as a relative speed of the saw frame 11 and / or of the sawing tool 12 with respect to the workpiece 14.
  • the relative speed is oriented at least approximately parallel to a height direction (see below) of the saw band 16, for example.
  • the work values are for example automatically transmitted to the control device 28 by means of the evaluation device 44 and / or are automatically set on the control device 28. For example, there is a check and / or correction of properties of the sawing tool 12 entered manually by an operator and / or manually entered work values.
  • the sawing process is then carried out based on the set work values.
  • the sawing tool 12 is examined by means of the sensor device 32 for damage points 52 and / or wear points 54 present on the sawing tool 12.
  • the examination takes place in an automated manner via the sensors 34 and / or via the image recognition device 42.
  • the examination of the sawing tool 12 for damage points 52 and / or wear points 54 is carried out continuously during the sawing process.
  • the sawing tool 12 is examined in particular for damage in an area of a joint 56 of the sawing tool 12 (FIG. 4).
  • the joint 56 is, for example, a weld seam 58 of the sawing tool 12 and in particular of the saw band 16.
  • a first sub-area 60 and a second sub-area 62 of the sawing tool 12 are connected to one another.
  • a first partial area 60 is connected to a second partial area 62 of a saw band 16 designed as an endless band.
  • the sawing tool 12 When examining the sawing tool 12, the sawing tool 12 is examined in particular for a height offset 64 present at the joint 56 by means of the sensor device 32.
  • the height offset 64 is an offset and / or an offset between the first sub-area 60 and the second sub-area 62 separated from the first sub-area 60 by the joint 56 in a height direction 66 of the sawing tool 12, the height direction 66 being transverse and in particular perpendicular to is oriented in a longitudinal direction 68 of the sawing tool 12.
  • the lateral offset 70 is a distance and / or an offset between the first sub-area 60 and the second sub-area 62 at the joint 56 in a thickness direction 72 of the sawing tool 12.
  • the thickness direction 72 is oriented perpendicular to the height direction 66 and to the longitudinal direction 68.
  • the center plane 50 of the sawing tool 12 lies parallel to the longitudinal direction 68 and the height direction 66.
  • the angle 76 is, for example, a smallest angle between a first edge 78 of the sawing tool 12 located in the first partial area 60 and a second edge 80 of the sawing tool 12 located in the second partial area 62.
  • the first edge 78 and the second edge 80 are arranged on the sawing tool 12 opposite the saw teeth 48.
  • the sawing tool 12 when examining the sawing tool 12, it is determined in particular whether the sawing tool 12 has a faulty sequence of saw teeth 48 at the joining point 56 (FIGS. 7a, 7b). For this purpose, an orientation of a sawtooth 48c arranged immediately in front of the joining point 56 and an orientation 81 of a sawtooth 48d of the sawing tool 12 arranged immediately after the joining point 56 are determined. For this purpose, the orientation 81 and / or a distance A2 of the saw teeth 48c and 48d in a direction perpendicular to the central plane 50 is determined.
  • FIGS. 7a, 7b the saw teeth 48 of the saw band 16 are each alternately oriented to the left and right with respect to the center plane 50.
  • FIG. 7b shows a schematic sectional view from below of the saw teeth 48 of the saw band 16.
  • the sequence of the saw teeth 48 is incorrect because there the successive saw teeth 48c and 48d are both oriented to the right.
  • the saw teeth 48 are each spaced apart by the distance A.
  • the saw teeth 48a and 48b are spaced apart from one another by a distance Al, the distance Al being greater than the distance A.
  • the saw teeth 48c and 48d, which are arranged at the joint 56, have an incorrect spacing.
  • a saw tooth 48e has a tooth breakout 82.
  • a saw tooth 48f of the saw band 16 has a damaged tooth cutting edge 84.
  • the height offset 64, the lateral offset 70, the direction offset 74, the erroneous sequence of saw teeth 48, the incorrect distance A from saw teeth 48, the tooth breakage 82 and the damaged tooth cutting edge 84 are each examples of damage locations 82 of the saw tool 12, their presence and / or the position is determined when examining the sawing tool 12.
  • the worn tooth cutting edge 84 is, for example, a point of wear 54 of the sawing tool 12, the presence and / or position of which is determined when the sawing tool 12 is examined.
  • the evaluation device 44 leads, for example, by means of the image
  • recognition device 42 and / or the database device 46 a ver equal to a predetermined shape and / or geometry of a saw tooth 48 with an actual shape and / or geometry of an examined saw tooth 48.
  • the examination of the sawing tool 12 is carried out in particular continuously during the sawing process.
  • the evaluation device 44 calculates work values for performing the sawing process and transmits these work values to the control device 28, which then uses the transmitted work values, for example the Saw frame drive 26 and / or saw tool drive 20 controls and / or regulates.
  • the sensor device 32 detects a point of damage 52 and / or a point of wear 54 on the sawing tool 12 during the sawing process, at least one automatic change occurs, especially when the point of damage 52 and / or point of wear 54 of the sawing tool 12 approaches the workpiece 14 to be sawed a labor value relevant for the sawing process.
  • the changed work value is calculated by the evaluation device 44 and transmitted to the control device 28.
  • the damage point 52 and / or wear point 54 is, for example, as shown in FIG. 10, a damaged and / or worn tooth cutting edge 84 of the saw tooth 48f.
  • a working feed 85 of the sawing machine 10 oriented in the cutting direction with respect to the workpiece 14 is reduced by means of the evaluation device 44 and / or the control device 28 and / or a In the cutting direction oriented to adjusting speed of the saw frame 11 is reduced.
  • a cutting force exerted on the workpiece 14 by the saw tool 12 is reduced in particular. In the situation shown in FIG.
  • the damage point 52 and / or the wear point 54 move towards the workpiece 14 during the sawing process (a direction of movement and / or speed direction 85a of the sawing tool 12 and in particular of the saw teeth 48 of the sawing tool 12 is shown in FIG 10 indicated by an arrow).
  • the speed direction 85a of the sawing tool 12 is oriented at least approximately parallel to the longitudinal direction 68 of the sawing tool 12.
  • the changed work value is adjusted again to an original value.
  • the feed rate 85 and / or the infeed speed of the saw frame 11 are adjusted back to the original value.
  • the spacing region 86 has a first spacing 88 and a second spacing 90.
  • the first distance 88 is a distance between a start of the distance region 86 and the workpiece 14.
  • the second distance 90 is a distance between the workpiece 14 and one end of the distance region 86.
  • a distance direction of the first distance 88 and the second distance 90 is, for example, at least Oriented approximately parallel to the longitudinal direction 68.
  • the first distance 88 and the second distance 90 are not necessarily the same.
  • a load on the sawing tool 12 at the damage point 52 and / or wear point 54 can be reduced. aims to decrease.
  • the service life of the sawing tool 12 can be increased and errors and / or malfunctions of the sawing machine 10 during the sawing process can be reduced.
  • the sawing process is automatically aborted or interrupted upon detection of a damage point 52 and / or a wear point 54, due to which the sawing process cannot be continued. In this way, damage to the sawing machine 10 in the event of a defective sawing tool 12 can be avoided.
  • the sawing tool 12 is examined for a point of damage 52 and / or a point of wear 54.
  • the data collected in the process are stored in the database device 46, for example.
  • a wear behavior and / or a wear curve of the sawing tool 12 can thereby be determined.
  • conclusions can be drawn about the quality of the sawing tool 12 used, for example.

Landscapes

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

Abstract

L'invention concerne un procédé permettant de faire fonctionner une machine à scier, en particulier une machine à scier à ruban, un processus de sciage étant mis en oeuvre au moyen d'un outil de sciage (12) de la machine à scier, le processus de sciage étant précédé ou s'accompagnant d'un examen automatique de l'outil de sciage (12), l'examen permettant la détermination d'une ou de plusieurs propriétés de l'outil de sciage (12), le processus de sciage étant commandé et/ou réglé en fonction d'une ou de plusieurs des propriétés déterminées de l'outil de sciage.
PCT/EP2019/069448 2019-07-18 2019-07-18 Procédé pour faire fonctionner une machine à scier et machine à scier WO2021008714A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2019/069448 WO2021008714A1 (fr) 2019-07-18 2019-07-18 Procédé pour faire fonctionner une machine à scier et machine à scier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2019/069448 WO2021008714A1 (fr) 2019-07-18 2019-07-18 Procédé pour faire fonctionner une machine à scier et machine à scier

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WO2021008714A1 true WO2021008714A1 (fr) 2021-01-21

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117086401A (zh) * 2023-06-13 2023-11-21 重庆敏德兴模具材料科技有限公司 一种模具钢加工设备及加工方法
DE102022129385A1 (de) 2022-11-07 2024-05-08 Technische Universität Wien Charakterisierung eines sägebandes einer bandsägemaschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05116023A (ja) * 1991-10-30 1993-05-14 Amada Co Ltd 鋸刃交換時期の決定方法及び鋸盤
JP2002254239A (ja) * 2001-02-23 2002-09-10 Amada Co Ltd 切断加工装置及びその方法
JP2004261950A (ja) * 2003-03-04 2004-09-24 Amada Co Ltd 帯鋸刃、ワークの切削加工方法及び帯鋸盤
WO2006009155A1 (fr) * 2004-07-21 2006-01-26 Amada Company, Limited Lame de scie et machine à scier
EP3450074A1 (fr) 2017-08-31 2019-03-06 KEURO Besitz GmbH & Co. EDV-Dienstleistungs KG Machine à scie à ruban
EP3482859A1 (fr) 2017-11-10 2019-05-15 KEURO Besitz GmbH & Co. EDV-Dienstleistungs KG Machine-outil, en particulier machine à scier et système permettant un fonctionnement optimisé d'une machine-outil

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05116023A (ja) * 1991-10-30 1993-05-14 Amada Co Ltd 鋸刃交換時期の決定方法及び鋸盤
JP2002254239A (ja) * 2001-02-23 2002-09-10 Amada Co Ltd 切断加工装置及びその方法
JP2004261950A (ja) * 2003-03-04 2004-09-24 Amada Co Ltd 帯鋸刃、ワークの切削加工方法及び帯鋸盤
WO2006009155A1 (fr) * 2004-07-21 2006-01-26 Amada Company, Limited Lame de scie et machine à scier
EP3450074A1 (fr) 2017-08-31 2019-03-06 KEURO Besitz GmbH & Co. EDV-Dienstleistungs KG Machine à scie à ruban
EP3482859A1 (fr) 2017-11-10 2019-05-15 KEURO Besitz GmbH & Co. EDV-Dienstleistungs KG Machine-outil, en particulier machine à scier et système permettant un fonctionnement optimisé d'une machine-outil

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022129385A1 (de) 2022-11-07 2024-05-08 Technische Universität Wien Charakterisierung eines sägebandes einer bandsägemaschine
WO2024099809A1 (fr) * 2022-11-07 2024-05-16 Technische Universität Wien Caractérisation d'une scie à ruban d'une machine à scier à ruban
CN117086401A (zh) * 2023-06-13 2023-11-21 重庆敏德兴模具材料科技有限公司 一种模具钢加工设备及加工方法
CN117086401B (zh) * 2023-06-13 2024-04-02 重庆敏德兴模具材料科技有限公司 一种模具钢加工设备及加工方法

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