EP3191275A1 - Procédé de commande d'un système de scie murale lors de la réalisation d'une coupe - Google Patents

Procédé de commande d'un système de scie murale lors de la réalisation d'une coupe

Info

Publication number
EP3191275A1
EP3191275A1 EP15757253.8A EP15757253A EP3191275A1 EP 3191275 A1 EP3191275 A1 EP 3191275A1 EP 15757253 A EP15757253 A EP 15757253A EP 3191275 A1 EP3191275 A1 EP 3191275A1
Authority
EP
European Patent Office
Prior art keywords
saw
end point
blade
angle
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.)
Granted
Application number
EP15757253.8A
Other languages
German (de)
English (en)
Other versions
EP3191275B1 (fr
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
Publication of EP3191275A1 publication Critical patent/EP3191275A1/fr
Application granted granted Critical
Publication of EP3191275B1 publication Critical patent/EP3191275B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 rail and a feed motor, wherein the saw head is mounted on the guide carriage and moved along the guide rail via the feed motor.
  • 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 with a first main section angle of the saw arm and a first diameter of the saw blade used, followed by a second main section with a second main section 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 enables the machining of hard materials and in which the service life and the machining speed of the saw blade are optimized.
  • the pivoting movement of the saw arm from the first main cutting angle is carried out in a new pivot angle in at least two steps with at least one Eisenwinkei, wherein between the Schwenkbewegun- conditions of the saw arm in the insectskei each carried out 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 not reached, the diamond particles are not exposed during machining with the saw blade and there is a risk of polishing the cutting segments, which reduces the service 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 free cutting of the saw blade which takes place between the pivoting movements of the saw arm, results in the further reduction of the arc length of the saw blade engaging 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 performance and the
  • the intermediate angles can be determined by the operator or the control unit of the wall sawing system determines the intermediate angles depending on different boundary conditions.
  • the intermediate angles represent an input quantity 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 to the first blade guard edge and a second distance of the axis of rotation to the second blade guard edge are put together.
  • the first and second widths each consist of a first distance of the axis of rotation to the first blade guard edge and a second distance of the axis of rotation to the second blade guard edge are put together.
  • a first boundary of the wall saw facing the first end coincides with the first end point, wherein 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 hindrance, by a first saw blade edge of the saw blade used facing the first end point, when the first end point represents an obstacle and the machining takes place without blade protection, and by a, the first end point facing first blade guard edge of the used Leaf protection, 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 Austnttsyak 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.
  • cos ( ⁇ ß 1, j ) denotes the penetration depth of the saw blade used into the workpiece at the jth intermediate angle
  • the first saw blade edge of the saw blade used coincides with the first end point when the pivot axis is a distance from the first end point of D / 2-8 Sin ( ⁇ ß 1,, j )
  • the first blade protection edge of the sheet protection used coincides with the first end point when the
  • Pivoting axis has a distance to the first end point of B 2a - ⁇ sin ( ⁇ ß 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 first upper exit point coincides with the first end point when the pivot axis is a distance from the first end point of V [h 2 * (D-h 2 )] - ⁇ .
  • 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 saw head is positioned after the n-1-th step so that after the pivoting movement of the saw arm in the new main section angle coincides, the second end point facing the second boundary of the wall saw with the second end point. After the swiveling movement of the saw arm into the second main cutting angle!
  • 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 V [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 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 spaced 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 blade having a second blade diameter and a second batten guard having a second blade guard width.
  • FIG. 1 a wall saw system with a guide rail and a wall saw
  • FIGS. 2A, B the processing of a separation cut between a first and second free end point without obstacle
  • FIGS. 3A, B the processing of a separating cut between a first and second
  • FIGS. 4A, B the processing of a separating cut between a first and second
  • FIGS. 5A-K show the wall sawing system of FIG. 1 when creating a separation cut between a first endpoint representing an obstacle and a second free one
  • FIG. 1 shows a wall sawing system 10 with a guide rail 11, a tool device 12 displaceably arranged on the guide rail 11, and a remote control 13.
  • the tool device is designed as a wall saw 12 and comprises a machining unit 14 and a motorized feed unit 15.
  • the machining unit is a saw head 14 formed and includes a trained as a saw blade machining tool 16 which is fixed to a saw arm 17 and is driven by a drive motor 18 about an axis of rotation 19.
  • the saw blade 18 is surrounded by a blade guard 21 which is secured by a blade guard 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 ceremoniessschiitten 26 and slidably formed via the feed motor 27 along the guide rail 1 1 in a feed direction 28, in the device housing 25 is in addition to the motors 19, 22, 27, a Kontroiltechnik 29 for controlling the saw head 14 and the motor feed unit 15 arranged.
  • 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 pivoting angle! the saw arm 17 and the displacement sensor 33 measures the current position of the saw head 14 on the guide rail 1 1, 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 wired and wireless loose communication connection 41 in the form of an infrared, Bluetooth, Wi-Fi or Wi-Fi connection be formed.
  • FIGS. 2A, B show the guide rail 1 1 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 Ei and a second end point E 2 .
  • a direction parallel to the feed direction 28 is defined, wherein the positive X direction is directed from the first end point E, to the second end point E 2 , and as 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.
  • 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.
  • FIGS. 2A, B form the end points E 1 , E 2 free end points without obstruction, wherein at the free first end point E, an overlapping is not allowed and at the second end point E 2, an overlapping 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 1 1.
  • 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.
  • 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-Pcsitionen the first and second end point ⁇ ,, E are set in the embodiment by the entry of part lengths.
  • the distance between the mounting position X 0 and the first end point E 1 determines a first part length Li 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 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, 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 determined by the operator or the control unit of the VVandsägeing system determines the main cutting sequence depending on several boundary conditions.
  • the first main section which is also referred to as a precut
  • the other main cuts are usually made with the same depth of cut, but can also have different cutting depths.
  • 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.
  • Basic position of the saw arm 17 may be arranged above the workpiece 24. Whether this boundary condition is fulfilled depends on two device-specific variables of the VVandsägesystems 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 Sägersmasse ⁇ of the saw arm 17, which is defined as the distance between the axis of rotation 19 of the saw blade 16 and the pivot axis 23 of the saw arm 17. If the sum of these two device-specific sizes is greater than half the saw blade diameter D / 2, the saw blade 16 is arranged in the basic position above the workpiece 24.
  • the saw arm length 8 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 pivoting angle is 0 ° and the axis of rotation 19
  • 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 cutting cut, various blade protectors with appropriate blade guard widths are usually used.
  • FIG. FIG. 2B shows the saw arm 17, which is inclined in a negative direction of rotation 54 at a negative swivel 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 + 80 °.
  • the in FIG. 2B 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.
  • Swivel axis 23 the position of the rotation axis 19 is moved in the X direction and in the Y direction.
  • the displacement of the axis of rotation 19 of the workinggearmin ⁇ and the pivot angle ⁇ of the saw arm 17 is dependent.
  • the displacement ⁇ ⁇ in the X direction is 5 .
  • sin ( ⁇ a) and the displacement path ⁇ y in the Y direction is ⁇ ' cos ( ⁇ a).
  • the saw blade 1 6 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 circle segment corresponds to the penetration depth of the saw blade 16 into the workpiece 24.
  • 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 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 endpoint E is referred to as a first upper exit point 58 and an upper exit point facing the second endpoint E 2 as a second upper exit point 59.
  • FIG. 3A, B show the wall sawing system 10 in creating a separation cut between the first end point E, and the second end point E 2 , which are defined as obstacles, wherein the processing is performed without blade guard 21.
  • a first saw blade edge 61 which faces the first end point E
  • a second saw blade edge 62 which faces the second end point E z , 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 ⁇ ⁇ of the rotation axis 19 and the saw blade diameter D.
  • FIG. 3A shows the wall saw 12 with the saw arm 17 tilted in the negative rotational direction 54 at a negative swivel angle -a (0 ° to -180 °).
  • X (61) X Ref + ⁇ ⁇ sin (-a) - D / 2
  • X (52) X Ref + 5 - sin (-a) + D / 2.
  • FIGS. 4A, B show the wall sawing system 10 in the process of obtaining a separating cut between the first end point E, and the second end point E 2 , which are defined as obstacles, with the blister guard 21 being processed.
  • 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 ⁇ ⁇ of the rotation axis 19 and the blade guard width B.
  • FIG. 4A shows the wall saw 12 with the saw arm 17 tilted at a negative swivel angle -a (0 ° to -180 °) and the blade guard 21 mounted blade guard 21.
  • the clearances become before the controlled machining starts the rotation axis 19 to the blade guard edges 71, 72 determined, 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.
  • X (71) X Ref + ⁇ sin (a) -Ba
  • X (72) X Rs ( + ⁇ sin (ex) + B b )
  • Fig. 43 shows the wall saw 12 with the saw arm 17 inclined at a positive swing angle ⁇ (0 ° to + 180 °) and the blade guard 21 mounted on the blade guard width B.
  • FIGS. FIGS. 2A, B show a separation section between two end points E 1 , E 2 , which are defined as free end points without an obstacle
  • FIG. 3A, B and 4A, B show a separating section 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 obstruction, 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 endpoint Ei, which represents an obstacle, and a second endpoint E 2 , which represents a free endpoint 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 t 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 having a third main cutting 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,, D z , D 3 of the main sections coincide with the saw blade diameter D, and the widths B, B, 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 stable guiding of the saw blade during machining and a narrow cutting gap.
  • 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 endpoint E :.
  • the first diameter D 1 for the first main section the saw blade diameter D.
  • start position X start the saw arm 17 from the basic position at 0 ° in the negative direction of rotation 54 in the negative first main section angle! - ⁇ 1 , panned.
  • 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 in the positive feed direction 56 with the saw arm 17 inclined at the negative first main cutting angle -a ⁇ and the rotating saw blade 16 (FIG. 5A).
  • the position of the saw head 14 is regularly measured by the displacement sensor 33.
  • h (- ⁇ 1 D 1) D 1/2 - ⁇ - cos ⁇ (-oci) -et- the depth of penetration of the saw blade used in the workpiece 24 at first major negative cutting angle, with the first diameter D 1, of the D shegebiatt carefullymesser corresponds, designated.
  • the second upper exit point 59 of the saw blade 16 facing the second end point E 2 coincides with the second end point E 2 .
  • 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 indicates whether the pivoting movement occurs at the first or second endpoint E-, E 2 , with the index "1" for the first endpoint E ; and the index "2" stands for the second endpoint E 2 .
  • the second index indicates 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 to the intermediate angle - ⁇ 2,1 (FIG. 5C).
  • the distance is adjusted so that the second end point E 2 facing the second upper exit point 59 of the saw mate 16 after the pivotal movement of the saw arm 17 in the intermediate angle -ß 2.1 coincides with the second end point E 2 .
  • the saw head 14 is displaced in the negative feed direction 57 by a path length of V [h 2 ' (D 2 -h 2 )], where h 2 -h (- ⁇ 2 , D 2 ) ⁇ D 2 / 2 - ⁇ - ⁇ cos (- ⁇ 2 ) denotes the penetration depth of the saw blade into the workpiece 24 at the negative second main cutting angle - ⁇ 2 with the second diameter D 2 corresponding to the saw blade diameter D (FIG. 5D).
  • the saw head 14 is positioned in the feed direction 28 such that the pivot axis 23 is at a distance of V [h 3 (D 2 -h 2 )] + ⁇ sin (- ⁇ 2 ) from the second end point E 2 .
  • the saw head 14 is in the negative feed direction 57 to the first end point E, to be moved, wherein the position of the saw head 14 is measured during the advancing movement of the displacement sensor 33 regularly.
  • the advancing movement of the saw head 14 is stopped when the pivot axis 23 is at a distance of B 2/2 -5 sin (- ⁇ 2 ) from the first end point ET and the first blade protection edge 71 of the blade guard 21 against the obstacle at the first end point E, adjacent ( Figure 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 ⁇ ⁇ 2.1 .
  • the first index indicates 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, 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 head 14 Before the pivoting movement of the saw arm 17 into the intermediate angle - ⁇ 2,1 , the saw head 14 is positioned. Since the positioning at the obstacle takes place at E 1 and the intermediate angle - ⁇ 2,1 is less than -90 °, it is not possible to position the saw head 14 so that the second blade guard edge 72 after the pivoting movement in the intermediate angle - ⁇ 2.1 to the obstacle E, adjacent. The positioning of the saw head 14 takes place by means of the critical angle a crit of -90 ° and the saw arm 17 is subsequently pivoted into the intermediate angle - ⁇ 21 (FIG. 5G). The critical angle of -90 ° must be taken into account, since the first end point E, during pivoting movement must not be exceeded.
  • the saw head 14 with the, under the intermediate angle - ⁇ 2.1> inclined saw arm 17 and the rotating saw blade 16 in the positive feed direction 56 to a path length of V [h 3 (D 3 - h 3) j method (FIG 5H.), where h 3 - h (- ⁇ 3 D 3.) - D3 / 2 - ⁇ - (cos ⁇ - ⁇ 3 ) - DV2 - ⁇ + ⁇ the penetration depth of the saw blade 16 in the
  • 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 ET (FIG.
  • the corner processing of the first end point E t 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 egg.
  • the third main section with the, under the negative third main cutting angle - ⁇ 3 inclined, saw arm 17 in the positive
  • Feed direction 56 executed (FIG 5K).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Sawing (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

L'invention concerne un procédé de commande d'un système de scie murale (10) lors de la réalisation d'une coupe de séparation dans une pièce (24) entre un premier et un second point limite. Le système de scie murale (10) comprend une scie murale (12) comprenant une tête de scie (14), un bras de scie (17) pivotant, une lame de scie (16) et un carter de lame (21). La coupe de séparation est effectuée en plusieurs coupes principales, les paramètres des coupes principales (angle de coupe principale) étant fixés avant le lancement d'une séquence de coupes principales. Le mouvement de pivotement du bras de scie (17) jusqu'à un angle de coupe principale est effectué en au moins deux étapes en passant par au moins un angle intermédiaire, une découpe "non guidée" étant réalisée par la lame de scie (16) entre les mouvements de pivotement du bras de scie (17) jusqu'à l'angle intermédiaire.
EP15757253.8A 2014-09-08 2015-09-01 Procédé de commande d'un système de scie murale par sciage en long Active EP3191275B1 (fr)

Applications Claiming Priority (2)

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
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

Publications (2)

Publication Number Publication Date
EP3191275A1 true EP3191275A1 (fr) 2017-07-19
EP3191275B1 EP3191275B1 (fr) 2025-03-12

Family

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Application Number Title Priority Date Filing Date
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 Active EP3191275B1 (fr) 2014-09-08 2015-09-01 Procédé de commande d'un système de scie murale par sciage en long

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP14003100.6A Withdrawn EP2993011A1 (fr) 2014-09-08 2014-09-08 Procédé de commande d'un système de scie murale par sciage en long

Country Status (4)

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US (1) US10300629B2 (fr)
EP (2) EP2993011A1 (fr)
JP (1) JP2017527470A (fr)
WO (1) WO2016037891A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2993015A1 (fr) * 2014-09-08 2016-03-09 HILTI Aktiengesellschaft Procédé de commande d'un système de scie murale par sciage en long
EP2993011A1 (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
AT525081B1 (de) * 2021-07-15 2022-12-15 Framag Ind Gmbh Verfahren und vorrichtung zur steuerung der vorschubgeschwindigkeit von sägeblättern

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5237897A (en) * 1987-03-02 1993-08-24 Seneca Sawmill Company Automatic bandmill strain and saw tracking method and apparatus
US5694821A (en) * 1995-12-08 1997-12-09 Simonds Industries, Inc. Method for controlling work feed rate for cutting wood, metal and other materials
US5689072A (en) * 1996-07-12 1997-11-18 Chiuminatta; Edward R. Method and apparatus for preloading a skid plate for an early cutting concrete saw
JP3234177B2 (ja) * 1997-07-01 2001-12-04 ファナック株式会社 位置制御装置
US6484711B2 (en) * 2001-02-23 2002-11-26 Multiquip, Inc. Automatic depth of cut control for concrete saw
DE102005000013A1 (de) 2005-02-22 2006-08-31 Hilti Ag Steuerbare Wandsäge und Steuerverfahren
US20080276773A1 (en) * 2006-03-30 2008-11-13 Radhakrishna Shesha Iyengar Togare Multipurpose cutting method for cutting various materials
US9259849B2 (en) * 2007-05-24 2016-02-16 Clark Equipment Company Vehicle-mounted hydraulic slab cutter
CA2716871C (fr) * 2008-02-29 2018-02-20 Husqvarna Ab Communication de scie electrique
CA2772235C (fr) * 2009-09-02 2016-05-03 Husqvarna Ab Scie pour le travail de decoupage dans le batiment
DE102011089878A1 (de) 2011-12-23 2013-06-27 Hilti Aktiengesellschaft Vorrichtung zur Trennung eines Untergrundes und Verfahren zur Steuerung einer derartigen Trennvorrichtung
DE102013202442B4 (de) * 2013-02-14 2014-09-25 Hilti Aktiengesellschaft Verfahren zur Steuerung eines Gerätesystems mit einem Werkzeuggerät und einer motorischen Vorschubeinrichtung
DE102013202445A1 (de) 2013-02-14 2014-08-14 Hilti Aktiengesellschaft Verfahren zur Steuerung eines Gerätesystems beim Trennen eines Werkstückes entlang einer Trennlinie
DE102013202754A1 (de) 2013-02-20 2014-08-21 Hilti Aktiengesellschaft Vorrichtung zum Trennen eines Werkstückes entlang einer Trennlinie
EP2983877B1 (fr) * 2013-04-12 2016-11-30 Anders Johnsen Scie murale pourvue d'un embrayage de sécurité
EP2993011A1 (fr) * 2014-09-08 2016-03-09 HILTI Aktiengesellschaft Procédé de commande d'un système de scie murale par sciage en long

Also Published As

Publication number Publication date
US10300629B2 (en) 2019-05-28
EP3191275B1 (fr) 2025-03-12
JP2017527470A (ja) 2017-09-21
US20170291324A1 (en) 2017-10-12
WO2016037891A1 (fr) 2016-03-17
EP2993011A1 (fr) 2016-03-09

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