EP2993011A1 - Procédé de commande d'un système de scie murale par sciage en long - Google Patents

Procédé de commande d'un système de scie murale par sciage en long Download PDF

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Publication number
EP2993011A1
EP2993011A1 EP14003100.6A EP14003100A EP2993011A1 EP 2993011 A1 EP2993011 A1 EP 2993011A1 EP 14003100 A EP14003100 A EP 14003100A EP 2993011 A1 EP2993011 A1 EP 2993011A1
Authority
EP
European Patent Office
Prior art keywords
saw
end point
blade
saw blade
arm
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Withdrawn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
EP14003100.6A
Other languages
German (de)
English (en)
Inventor
Wilfried Kaneider
Dragan Stevic
Christian Bereuter
Dieter Profunser
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 EP14003100.6A priority Critical patent/EP2993011A1/fr
Priority to US15/509,445 priority patent/US10300629B2/en
Priority to EP15757253.8A priority patent/EP3191275A1/fr
Priority to JP2017513095A priority patent/JP2017527470A/ja
Priority to PCT/EP2015/069911 priority patent/WO2016037891A1/fr
Publication of EP2993011A1 publication Critical patent/EP2993011A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
    • B28D7/005—Devices for the automatic drive or the program control of the machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/042—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs the saw blade being carried by a pivoted lever
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/044—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs the saw blade being movable on slide ways
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/045—Sawing grooves in walls; sawing stones from rocks; sawing machines movable on the stones to be cut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/10—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with provision for measuring

Definitions

  • the present invention relates to a method for controlling a wall sawing system when creating a separating cut according to the preamble of claim 1.
  • the wall saw system comprises a guide rail and a wall saw with a saw head, a motor feed unit which moves the saw head parallel to a feed direction along the guide rail and at least one saw blade mounted on a saw arm of the saw head and driven by a drive motor about an axis of rotation.
  • the saw arm is designed to be pivotable about a pivot axis by means of a swivel motor. By a pivoting movement of the saw arm about the pivot axis, the penetration depth of the saw blade is changed in the workpiece.
  • the motorized feed unit comprises a guide carriage and a feed motor, wherein the saw head is mounted on the guide carriage and moved over the feed motor along the guide rail.
  • a sensor device with a swivel angle sensor and a displacement sensor is provided.
  • the swivel angle sensor measures the instantaneous swivel angle of the saw arm and the travel sensor measures the current position of the saw head on the guide rail.
  • the measured values for the current swivel angle of the saw arm and the current position of the saw head are regularly transmitted to a control unit of the wall saw.
  • the known method for controlling a wall sawing system is divided into a preparation part and a processing of the separating cut controlled by the control unit.
  • the preparation part the operator sets at least the saw blade diameter of the saw blade, the positions of the first and second end points in the feed direction and the final depth of the separating cut; other parameters can be the material of the machined Workpiece and the dimensions of embedded reinforcing iron.
  • the separating cut control unit determines a suitable main cutting sequence of main cuts, the main cutting sequence comprising at least a first main section having a first main cutting angle of the saw arm and a first diameter of the saw blade used, and a following second main section having a second main cutting angle of the saw arm and a first Diameter of the saw blade used.
  • the known method for controlling a wall sawing system has the disadvantage that no special method for controlling the wall saw is provided for the machining of hard materials.
  • polishing of the cutting segments may occur during the pivoting movement of the saw blade into the workpiece. By polishing the cutting segments, the life of the cutting segments and the machining speed of the saw blade are reduced.
  • the object of the present invention is to develop a method for controlling a wall sawing system, which allows the machining of hard materials and in which the life and the machining speed of the saw blade is optimized.
  • the pivoting movement of the saw arm from the first main cutting angle is performed in a new pivot angle in at least two steps with at least one intermediate angle, wherein between the pivoting movements of the saw arm in the intermediate angle in each case a free cutting of the saw blade.
  • Saw blades for wall saws are constructed in two parts from a base body and cutting segments on the circumference of the body.
  • the cutting segments consist of a matrix material in which diamond particles are embedded.
  • a minimum surface pressure is required to expose the diamond particles during machining. If the minimum surface pressure is undershot, the diamond particles are not exposed during machining with the saw blade and there is a risk that polishing of the cutting segments occurs, which reduces the life of the cutting segments and the machining speed of the saw blade.
  • the minimum surface pressure of the cutting segments corresponds to a critical arc length of the saw blade, which must not be exceeded.
  • the value for the The critical arc length of a saw blade depends on several parameters, including the specification of the saw blade, the material of the workpiece to be machined and the power and torque of the drive motor for the saw blade.
  • the division of the pivoting movement in at least two steps reduces the risk that a polishing of the saw blade occurs.
  • a smaller swing angle results in reducing the arc length of the saw blade engaged with the workpiece or the number of cutting segments engaged with the workpiece.
  • the pivoting movement of the saw arm is carried out from the first main cutting angle in the new pivot angle in n steps with n-1 intermediate angles, wherein between the pivoting movements of the saw arm in the intermediate angle in each case a free cutting of the saw blade.
  • the number of steps depends, among other things, on the specification of the saw blade, the hardness of the material and the power and torque of the drive motor for the saw blade.
  • the intermediate angles can be specified by the operator or the control unit of the wall sawing system determines the intermediate angles depending on different boundary conditions. For the method according to the invention, the intermediate angles represent an input variable which is used to control the wall saw.
  • a saw arm length of the saw arm which is defined as the distance between the swivel axis of the saw arm and the axis of rotation of the saw blade, and a distance between the swivel axis and the top of the work piece are set.
  • the control unit For a controlled processing of a separating cut, the control unit must be aware of various parameters. These include the shegearmin, which represents a fixed device-specific size of the wall saw, and the vertical distance between the pivot axis and the surface of the workpiece, which also depends on the geometry of the wall saw and the geometry of the guide rail used.
  • a first width is additionally defined for a blade guard used in the first main section, and a second width for a blade guard used in the second main section, wherein the first and second widths each consist of a first distance of the axis of rotation are assembled to the first blade guard edge and a second distance of the rotation axis to the second blade protection edge.
  • the first and second widths each consist of a first distance of the axis of rotation are assembled to the first blade guard edge and a second distance of the rotation axis to the second blade protection edge.
  • the first boundary of the wall saw is formed by a, the first end point facing first upper exit point of the saw blade used at the top of the workpiece when the first End point represents a free end point without obstruction, by a, the first end point facing first saw blade edge of the saw blade used when the first endpoint is an obstacle and the processing is done without blade protection, and by a, the first endpoint facing first blade guard edge of the blade guard used , w If the first endpoint is an obstacle and processing is done with blade protection.
  • Each step includes the steps of positioning the saw head, pivoting the saw arm into the intermediate angle, and moving the saw head to free the saw blade.
  • the first boundary coincides with the first end point.
  • the position control is performed on the first upper exit point of the saw blade at the top of the workpiece. If the first endpoint is an obstacle, the first edge of the saw blade (machining without blade protection) or the first blade guard edge (machining with blade guard) are used for position control.
  • the first upper exit point coincides with the first end point when the pivot axis is a distance from the first end point of ⁇ [h ( ⁇ ⁇ 1, j ).
  • the saw head is positioned so that, after the pivoting movement of the saw arm into the new main cutting angle, the first boundary of the wall saw facing the first end point coincides with the first end point.
  • the second boundary of the wall saw is formed by a, the second end point facing, the second upper exit point of the saw blade used at the top of the workpiece, when the second endpoint facing the second end point facing the second saw End point represents a free end point without obstruction, by one, the second end point facing the second saw blade edge of the saw blade used when the second endpoint is an obstacle and the processing is done without blade protection, and by one, the second end point facing, second blade guard edge of verwen sheet guard when the second endpoint is an obstacle and processing is done with blade guard.
  • Each step includes the steps of positioning the saw head, pivoting the saw arm into the intermediate angle, and moving the saw head to free the saw blade.
  • the second upper exit point coincides with the second end point when the pivot axis is at a distance from the second end point of ⁇ [h ( ⁇ ⁇ 2, j ).
  • the saw head is positioned so that, after the pivoting movement of the saw arm into the new main cutting angle, the second boundary of the wall saw facing the second end point coincides with the second end point.
  • the second upper exit point coincides with the second end point when the pivot axis is at a distance from the second end point of ⁇ [h 2 * (D -h 2 )] + ⁇ * sin ( ⁇ ⁇ 2 )
  • h ( ⁇ ⁇ 2 ) D / 2 - ⁇ - ⁇ ⁇ cos ( ⁇ ⁇ 2 ) denotes the penetration depth of the saw blade used into the workpiece at the second main cutting angle
  • the second saw blade edge of the saw blade used coincides with the second end point, when the pivot axis is at a distance from the second end point of D / 2 + ⁇ ⁇ sin ( ⁇ ⁇ 2 )
  • the second blade guard edge of the blade guard used coincides with the second end point when the pivot axis is a distance from the second end point of B b + ⁇ ⁇ Sin ( ⁇ ⁇ 2 ).
  • the first and second main cuts are made with a saw blade and a blade guard.
  • the first main section is performed by a first saw blade having a first blade diameter and a first blade guard having a first blade guard width
  • the second major section is performed by a second saw blade having a second blade diameter and a second blade guard having a second blade guard width.
  • FIG. 1 shows a wall saw 10 with a guide rail 11, one arranged displaceably on the guide rail 11, the tool unit 12 and a remote control 13.
  • the power tool is designed as a wall saw 12 and comprises a processing unit 14 and a motor drive unit 15.
  • the processing unit is configured as a saw head 14 and includes a saw blade designed as a machining tool 16, which is attached to a saw arm 17 and is driven by a drive motor 18 about a rotational axis 19th
  • the saw blade 16 is surrounded by a blade guard 21 which is secured by means of a blade protection holder on the saw arm 17.
  • the saw arm 17 is formed by a pivot motor 22 about a pivot axis 23 pivotally.
  • the swivel angle ⁇ of the saw arm 17 determines, with a saw blade diameter D of the saw blade 16, how deep the saw blade 16 dips into a workpiece 24 to be machined.
  • the drive motor 18 and the pivot motor 22 are arranged in a device housing 25 .
  • the motor-driven feed unit 15 comprises a guide carriage 26 and a feed motor 27, which is likewise arranged in the device housing 25 in the exemplary embodiment.
  • the saw head 14 is mounted on the guide carriage 26 and formed on the feed motor 27 along the guide rail 11 in a feed direction 28 slidably.
  • a control unit 29 for controlling the saw head 14 and the motor feed unit 15 is arranged in addition to the motors 19, 22, 27.
  • a sensor device For monitoring the wall sawing system 10 and the machining process, a sensor device is provided with a plurality of sensor elements.
  • a first sensor element 32 is designed as a swivel angle sensor and a second sensor element 33 as a displacement sensor.
  • the swivel angle sensor 32 measures the current swivel angle of the saw arm 17 and the displacement sensor 33 measures the current position of the saw head 14 on the guide rail 11.
  • the measured variables are transmitted from the swivel angle sensor 32 and displacement sensor 33 to the control unit 29 and used to control the wall saw 12.
  • the remote control 13 comprises a device housing 35, an input device 36, a display device 37 and a control unit 38, which is arranged in the interior of the device housing 35.
  • the control unit 38 converts the inputs of the input device 36 into control commands and data, which are transmitted to the wall saw 12 via a first communication link.
  • the first communication connection is designed as a wireless and wireless communication connection 41 or as a communication cable 42 .
  • the wireless and wireless communication connection is formed in the embodiment as a radio link 41, which is formed between a first radio unit 43 on the remote control 13 and a second radio unit 44 on the power tool 12.
  • the wireless and wireless Communication link 41 may be configured in the form of an infrared, Bluetooth, Wi-Fi or Wi-Fi connection.
  • FIGS. 2A B show the guide rail 11 and the wall saw 12 of the wall sawing system 10 of FIG. 1 when creating a separating cut 51 in the workpiece 24 of the workpiece thickness d.
  • the separating cut 51 has an end depth T and extends in the feed direction 28 between a first end point E 1 and a second end point E 2 .
  • a direction parallel to the feed direction 28 is defined, with the positive X direction directed from the first end point E 1 to the second end point E 2
  • the Y direction is a direction perpendicular to the X direction in the depth of the workpiece 24 defined.
  • the end point of a separation cut can be defined as a free end point without hindrance or as an obstacle. Both endpoints can be defined as free endpoints without obstacles, both endpoints as obstacles or one endpoint as a free endpoint and the other endpoint as an obstacle. At a free endpoint without obstacle, an overlap may be allowed. Due to the overlapping, the cutting depth at the end point reaches the final depth T of the separating cut. In the embodiment of FIGS. 2A , B form the end points E 1 , E 2 free end points without obstruction, wherein at the free first end point E 1, an overlapping is not allowed and at the second end point E 2, an overlap is done.
  • FIG. 2A shows the saw head 14 in a mounting position X 0 and the saw arm 17 in a basic position of 0 °.
  • the saw head 14 is positioned by the operator by means of the guide carriage 26 in the mounting position X 0 on the guide rail 11.
  • the mounting position X 0 of the saw head 14 is between the first and second end point E 1 , E 2 and is determined by the position of the pivot axis 23 in the feed direction 28.
  • the position of the pivot axis 23 is particularly suitable as a reference position X Ref for the position monitoring of the saw head 14 and the control of the wall saw 12, since the X position of the pivot axis 23 remains unchanged even during the pivoting movement of the saw arm 17.
  • another X position on the saw head 14 can be set as the reference position, in which case the distance in the X direction to the pivot axis 23 must additionally be known.
  • the X positions of the first and second end points E 1 , E 2 are defined in the exemplary embodiment by the input of partial lengths.
  • the distance between the mounting position X 0 and the first end point E 1 determines a first part length L 1 and the distance between the mounting position X 0 and the second end point E 2 a second part length L 2 .
  • the X positions of the end points E 1 , E 2 can be defined by entering a partial length (L 1 or L 2 ) and a total length L as the distance between the end points E 1 , E 2 .
  • the separating cut 51 is created in several partial sections until the desired final depth T is reached.
  • the partial sections between the first and second end points E 1 , E 2 are defined as main sections and the cutting sequence of the main sections as the main section sequence.
  • additional corner processing can be carried out, which in the case of an obstacle is referred to as obstacle processing and in the case of a free end point with overlapping as overcut processing.
  • the main cutting sequence can be specified by the operator or the control unit of the wall sawing system determines the main cutting sequence depending on several boundary conditions.
  • the first main section which is also referred to as a precut, is executed with a reduced depth of cut and a reduced power of the drive motor in order to prevent polishing of the saw blade.
  • the other major sections are usually performed with the same depth of cut, but may also have different depths of cut.
  • the boundary conditions usually defined by an operator include the depth of cut of the precut, the power of the precut, and the maximum depth of cut of the other major sections. From these constraints, the control unit can determine the main cutting sequence.
  • the main sections of a separating cut are made with a saw blade diameter or with two or more saw blade diameters. If multiple saw blades are used, machining usually begins with the smallest saw blade diameter.
  • the saw blade 16 In order to mount the saw blade 16 on the saw arm 17, the saw blade 16 must be arranged in the basic position of the saw arm 17 above the workpiece 24. Whether this boundary condition is satisfied depends on two device-specific sizes of the wall sawing system 10, on the one hand by a vertical distance ⁇ between the pivot axis 23 of the saw arm 17 and a top 53 of the workpiece 24 and on the other by a saw arm length ⁇ of the saw arm 17, which Distance between the axis of rotation 19 of the saw blade 16 and the pivot axis 23 of the saw arm 17 is defined.
  • the saw blade 16 is arranged in the basic position above the workpiece 24.
  • the saw arm length ⁇ is a fixed device-specific size of the wall saw 12, whereas the vertical distance ⁇ between the pivot axis 23 and the surface 53 in addition to the geometry of the wall saw 12 also depends on the geometry of the guide rail 11 used.
  • the saw blade 16 is mounted on a flange on the saw arm 17 and is driven by the drive motor 18 about the axis of rotation 19 in the sawing operation.
  • the pivot angle is 0 ° and the axis of rotation 19th
  • the saw blade 16 is moved in the depth direction 52 above the pivot axis 23.
  • the saw blade 16 is moved by a pivoting movement of the saw arm 17 about the pivot axis 23 from the basic position at 0 ° in the workpiece 24.
  • the saw blade 16 is driven by the drive motor 18 about the axis of rotation 19.
  • the saw blade 16 should be surrounded by the blade guard 21 during operation.
  • the wall saw 12 is operated with blade guard 21 or without blade guard 21.
  • a disassembly of the blade guard 21 may be provided, for example. If different saw blade diameters are used to machine the cut, various blade protectors with appropriate blade guard widths are usually used.
  • FIG. 2 B shows the saw arm 17, which is inclined in a negative rotational direction 54 at a negative pivot angle - ⁇ .
  • the saw arm 17 is adjustable in the negative direction of rotation 54 between pivot angles of 0 ° to -180 ° and adjustable in a direction opposite to the negative direction of rotation 54, positive direction of rotation 55 between pivot angles of 0 ° to + 180 °.
  • arrangement of the saw arm 17 is referred to as a pulling arrangement when the saw head 14 is moved in a positive feed direction 56 . If the saw head 14 is moved in a direction opposite to the positive feed direction 56, negative feed direction 57 , the arrangement of the saw arm 17 is referred to as an abutting arrangement.
  • the saw blade 16 generates in the workpiece 24 a cutting wedge in the form of a circle segment with a height h and a width b .
  • the height h of the circular segment corresponds to the penetration depth of the saw blade 16 into the workpiece 24.
  • D the saw blade diameter
  • h the penetration depth of the saw blade 16
  • ⁇ denotes the perpendicular distance between the pivot axis 23 and the upper side 53 of the workpiece 24, ⁇ the saw arm length and ⁇ the first pivot angle
  • the control of the wall saw 12 during the separating cut depends on whether the end points are defined as obstacles, and on an obstacle whether the processing is performed with blade guard 21 or without blade guard 21.
  • the control of the wall saw 12 in the process according to the invention via upper exit points of the saw blade 16 at the top 53 of the workpiece 24.
  • the upper exit points of the saw blade 16 can be from the reference position X Ref the pivot axis 23 in the X direction, calculate the displacement ⁇ x of the rotation axis 19 in the X direction and the width b.
  • An upper exit point facing the first end point E 1 is referred to as a first upper exit point 58 and an upper exit point facing the second end point E 2 as a second upper exit point 59 .
  • X (58) X Ref + ⁇ x - b / 2
  • X (59) X Ref + ⁇ x + b / 2
  • FIGS. 3A B show the wall sawing system 10 when creating a separating cut between the first end point E 1 and the second end point E 2 , which are defined as obstacles, the machining being done without blade guard 21.
  • a first saw blade edge 61 which faces the first end point E 1
  • a second saw blade edge 62 which faces the second end point E 2 , form the boundary of the wall saw 12.
  • the X positions of the first and second saw blade edges 61, 62 in the X direction can be calculated from the reference position X Ref of the pivot axis 23, the displacement path ⁇ x of the rotation axis 19 and the saw blade diameter D.
  • FIG. 3A shows the wall saw 12 with the, in the negative rotational direction 54 at a negative swivel angle - ⁇ (0 ° to -180 °) inclined saw arm 17.
  • X (61) X Ref + ⁇ ⁇ sin (- ⁇ ) - D / 2
  • X (62) X Ref + ⁇ ⁇ sin (- ⁇ ) + D / 2.
  • 3B shows the wall saw 12 with the, in the positive direction of rotation 55 at a positive pivoting angle ⁇ (0 ° to + 180 °), inclined saw arm 17.
  • X (61) X Ref + ⁇ ⁇ sin ( ⁇ ) - D / 2
  • X (62) X Ref + ⁇ ⁇ sin ( ⁇ ) + D / 2.
  • FIGS. 4A B show the wall sawing system 10 when creating a separation cut between the first end point E 1 and the second end point E 2 , which are defined as obstacles, wherein the processing is performed with blade guard 21.
  • first blade protection edge 71 which faces the first end point E 1
  • second blade protection edge 72 which faces the second end point E 2 , the boundary of the wall saw 12th
  • the X positions of the first and second blade protection edges 71, 72 in the X direction can be calculated from the reference position X Ref of the pivot axis 23, the displacement path ⁇ x of the rotation axis 19 and the blade guard width B.
  • FIG. 4A shows the wall saw 12 with the, under a negative pivot angle - ⁇ (0 ° to -180 °), inclined saw arm 17 and the mounted blade guard 21 of the blade guard width B.
  • the distances of the rotation axis 19th determined to the blade guard edges 71, 72, wherein the distance to the first blade protection edge 71 as a first distance B a and the distance to the second blade protection edge 72 as a second distance B b are designated.
  • FIG. 4B shows the wall saw 12 with the, under a positive pivot angle ⁇ (0 ° to + 180 °), inclined saw arm 17 and the mounted blade guard 21 of the blade guard width B.
  • X (71) X Ref + ⁇ ⁇ sin ( ⁇ ) -Ba
  • X (72) X Ref + ⁇ ⁇ sin ( ⁇ ) + B b .
  • FIGS. 2A , B show a separation section between two end points E 1 , E 2 , which are defined as free end points without obstacle
  • FIGS. 3A , B and 4A, B show a separation cut between two end points E 1 , E 2 , which are defined as obstacles.
  • one endpoint is defined as an obstacle and the other endpoint represents a free endpoint without hindrance, the control of the wall saw at the free end point on the upper exit point of the saw blade and obstacle on the saw blade edge (processing without blade guard 21) or the blade guard edge (processing with blade guard 21).
  • the first upper exit point 58, the first saw blade edge 61 and the first blade guard edge 71 are grouped together under the term "first boundary" of the wall saw 12 and the second upper exit point 59, the second saw blade edge 62 and the second blade guard edge 72 are termed "second Limitation ".
  • FIGS. 5A-K show the wall saw system 10 of FIG. 1 with the guide rail 11 and the wall saw 12 when creating a separating cut of the final depth T in the workpiece 24 between a first end point E 1 , which represents an obstacle, and a second end point E 2 , which represents a free end point without hindrance.
  • the processing of the separating cut is carried out with the aid of the method according to the invention for controlling a wall sawing system.
  • the separating cut is made in a main cutting sequence of several main cuts until the desired final depth T is reached.
  • the main cutting sequence comprises a first main section with a first main cutting angle ⁇ 1 of the saw arm 17, a first diameter D 1 and a first penetration depth h 1 of the saw blade used, a second main section with a second main cutting angle ⁇ 2 of the saw arm 17, a second diameter D 2 and a second penetration depth h 2 of the saw blade used and a third main section with a third main section angle ⁇ 3 of the saw arm 17, a third diameter D 3 and a third penetration depth h 3 of the saw blade used.
  • the first, second and third main sections are performed by the saw blade 16 with the saw blade diameter D and the blade guard 21 with the blade guard width B.
  • the diameters D 1 , D 2 , D 3 of the main sections are consistent with the saw blade diameter D, as well as the widths B 1 , B 2 , B 3 of the main sections coincide with the blade guard width B.
  • the main sections of a separating cut are advantageously carried out either with a pulling saw arm 17 arranged or the saw arm 17 is arranged alternately pulling and pushing.
  • the pulling arrangement of the saw arm 17 allows a stable guidance of the saw blade during machining and a narrow kerf.
  • a separating cut, in which the saw arm 17 is alternately pulled and pushed, has the advantage that the auxiliary times necessary for positioning the saw head 14 and pivoting the saw arm 17 are reduced.
  • the saw head 14 is moved in the first main section and third main section with the pulling saw arm 17 arranged in the positive feed direction 56; When lying between the second main section of the saw head 14 is moved with the jerky arranged saw arm 17 in the negative feed direction 57.
  • the saw arm 17 is arranged in the three main sections each in the negative direction of rotation 54.
  • the editing of the separation cut begins at the first end point E 1 .
  • the first diameter D 1 corresponds to the first main section of the saw blade diameter D.
  • the saw arm 17 is pivoted from the basic position at 0 ° in the negative direction of rotation 54 in the negative first main cutting angle - ⁇ 1 .
  • the first blade protection edge 71 of the blade guard 21 adjoins the obstacle at the first end point E 1 .
  • the saw head 14 is moved with the, under the negative first main cutting angle - ⁇ 1 , inclined saw arm 17 and the rotating saw blade 16 in the positive feed direction 56 ( FIG. 5A ).
  • the position of the saw head 14 is regularly measured by the displacement sensor 33.
  • the pivoting movement from the negative first main cutting angle - ⁇ 1 into the negative second main cutting angle - ⁇ 2 takes place in two steps with an intermediate angle - ⁇ 2,1 .
  • the first index identifies whether the pivoting movement takes place at the first or second end point E 1 , E 2 , where the index "1" stands for the first end point E 1 and the index "2" stands for the second end point E 2 .
  • the second index identifies the step and varies from 1 to n-1, n ⁇ 2.
  • the saw arm 17 is pivoted from the negative first main cutting angle - ⁇ 1 into the intermediate angle - ⁇ 2.1 ( FIG. 5C ).
  • FIG. 5C When positioning in FIG. 5C the distance is adjusted so that the, the second end point E 2 facing, the second upper exit point 59 of the saw blade 16 coincides after the pivoting movement of the saw arm 17 in the intermediate angle - ⁇ 2.1 with the second end point E 2 .
  • the saw head 14 is positioned in the feed direction 28 so that the pivot axis 23 has a distance of ⁇ [h 2 * (D 2 -h 2 )] + ⁇ * sin (- ⁇ 2 ) to the second end point E 2 .
  • the saw arm 17 is pivoted from the intermediate angle - ⁇ 2.1 into the negative second main cutting angle - ⁇ 2 ( FIG. 5E ).
  • the distance is adjusted so that, the second end point E 2 facing the second upper exit point 59 of the saw blade 16 after the pivotal movement of the saw arm 17 in the negative second main section angle - ⁇ 2 coincides with the second end point E 2 .
  • the saw head 14 is moved in the negative feed direction 57 to the first end point E 1 , wherein the position of the saw head 14 during the feed movement of the displacement sensor 33 is measured regularly.
  • the advancing movement of the saw head 14 is stopped when the pivot axis 23 has a distance of B 2/2 - ⁇ ⁇ sin (- ⁇ 2 ) to the first end point E 1 and the first blade protection edge 71 of the blade guard 21 to the obstacle at the first end point E first adjoins ( FIG. 5F ).
  • the pivoting movement from the negative second main cutting angle - ⁇ 2 into the negative third main cutting angle - ⁇ 3 takes place in two steps with an intermediate angle -y 2,1 .
  • the first index identifies whether the pivoting movement takes place at the first or second end point E 1 , E 2 , where the index "1" stands for the first end point E 1 and the index "2" stands for the second end point E 2 .
  • the second index identifies the step and varies from 1 to n-1, n ⁇ 2.
  • a positioning of the saw head 14 takes place. Since the positioning takes place at the obstacle at E 1 and the intermediate angle - ⁇ 2,1 is smaller than -90 °, it is not possible To position the saw head 14 so that the second blade protection edge 72 adjacent to the obstacle E 1 after the pivoting movement in the intermediate angle - ⁇ 2.1 .
  • the critical angle of -90 ° must be taken into account, since the first end point E 1 must not be exceeded during the pivoting movement.
  • the saw head 14 is positioned by means of the critical angle ⁇ crit of -90 ° and the saw arm 17 is subsequently pivoted out of the intermediate angle - ⁇ 2,1 into the negative third main cutting angle - ⁇ 3 (FIG. FIG. 5I ).
  • the saw head 14 is moved in the negative feed direction 57 with the saw arm inclined at - ⁇ 3 until the first blade guard edge 71 of the blade guard 21 adjoins the obstacle at the first end point E 1 ( FIG. 5J ).
  • the corner processing of the first end point E 1 can be improved if the blade guard 21 is dismantled and the corner processing takes place without blade protection. Without blade protection of the saw head 14 is moved with the under - ⁇ 3 inclined saw arm 17 in the negative feed direction 57 until the first saw blade edge 61 of the saw blade 16 coincides with the first end point E 1 .
  • the third main section is executed with the saw arm 17 tilted under the negative third main cutting angle - ⁇ 3 in the positive feed direction 56 ( FIG. 5K ).
EP14003100.6A 2014-09-08 2014-09-08 Procédé de commande d'un système de scie murale par sciage en long Withdrawn EP2993011A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP14003100.6A EP2993011A1 (fr) 2014-09-08 2014-09-08 Procédé de commande d'un système de scie murale par sciage en long
US15/509,445 US10300629B2 (en) 2014-09-08 2015-09-01 Method for controlling a wall saw system when making a separating cut
EP15757253.8A EP3191275A1 (fr) 2014-09-08 2015-09-01 Procédé de commande d'un système de scie murale lors de la réalisation d'une coupe
JP2017513095A JP2017527470A (ja) 2014-09-08 2015-09-01 切込形成時のウォールソーシステムの制御方法
PCT/EP2015/069911 WO2016037891A1 (fr) 2014-09-08 2015-09-01 Procédé de commande d'un système de scie murale lors de la réalisation d'une coupe

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EP14003100.6A EP2993011A1 (fr) 2014-09-08 2014-09-08 Procédé de commande d'un système de scie murale par sciage en long

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EP14003100.6A Withdrawn EP2993011A1 (fr) 2014-09-08 2014-09-08 Procédé de commande d'un système de scie murale par sciage en long
EP15757253.8A Pending EP3191275A1 (fr) 2014-09-08 2015-09-01 Procédé de commande d'un système de scie murale lors de la réalisation d'une coupe

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EP (2) EP2993011A1 (fr)
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EP2993015A1 (fr) * 2014-09-08 2016-03-09 HILTI Aktiengesellschaft Procédé de commande d'un système de scie murale par sciage en long
EP3664416A1 (fr) * 2018-12-05 2020-06-10 Hilti Aktiengesellschaft Procédé de fonctionnement d'un système et système

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US10300629B2 (en) 2019-05-28
EP3191275A1 (fr) 2017-07-19
WO2016037891A1 (fr) 2016-03-17
JP2017527470A (ja) 2017-09-21
US20170291324A1 (en) 2017-10-12

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