JP2019084619A - Gantry type punching device and punching method using the same - Google Patents

Abstract

To provide a punching device which enables adjustment and checking of a punching position relative to a workpiece to be quickly performed, achieves reduction of work hours, increase of the efficiency of punching work, reduction of workers' burden, and can secure safety of the work.SOLUTION: A punching device 1 includes: a placement table 10; a pair of X axis guide rails 20a, 20b; a gate shape gantry unit 30 having rolling wagons 33a, 33b supported on the X axis guide rails 20, 20b, legs 34a, 34b, and a girder 35; at least two or more drill units 40 which are attached to the girder 35 and may roll along a Y axis in a horizontal direction; and a rolling control part which controls rolling of the gantry unit 30 and the drill unit 40. The drill unit 40 further includes a laser radiation part and an imaging part. The rolling control part controls rolling of the gantry unit 30 and the drill unit 40 based on captured laser projection images.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a gantry-type drilling device and a drilling method using the gantry-type drilling device (hereinafter simply referred to as "piercing device" and "drilling method", respectively). More specifically, it is a manufacturing process of a square box pillar (hereinafter simply referred to as "box pillar") which is constructed by combining four steel planks and is mainly used as a pillar member for large buildings and the like. The present invention relates to a drilling device used for drilling holes for welding operation for electroslag welding and a drilling method using the drilling device.

  Conventionally, when building or constructing various large structures or structures such as high-rise buildings, buildings such as sports competition facilities, high-speed roads, bridge bridges such as iron bridges, or large vessels such as tankers, passenger ships, or cargo ships. In many cases, box columns constructed in a square cylindrical (or square tubular) shape by combining steel thick plates are often used as pillar members to be the main frame. This box pillar is a square cylindrical (or square tubular) one having a space surrounded by four thick plates inside, and various members are excellent as high strength and high load resistance. It is widely used in the industrial field.

  The configuration of the box column 100 will be described more specifically. As shown in FIG. 9 and the like, a pair of steel longitudinal plates 101a and 101b (flanges) disposed apart from each other, and the longitudinal plates 101a and 101b. And a pair of steel horizontal plates 102a and 102b (webs) connected to each other, and connecting the side edges of the vertical plates 101a and 101b and the side edges of the horizontal plates 102a The corners of the plates 101a and 101b and the side plates 102a and 102b are formed by welding, for example, by "submerged arc welding".

  Here, a space S surrounded by the vertical plates 101 a and the like and the horizontal plates 102 a and the like exists inside the box column 100 having a rectangular cylindrical shape. Therefore, when a strong load is applied to the box pillar 100, the space S is crushed, and there is a possibility that a part of the vertical plate 101a and the like and / or the horizontal plate 102a and the like may be bent or deformed. Therefore, in order to further improve the load resistance of the box column 100, a plurality of reinforcements are made so as to substantially close the cross section direction of the box column 100 in the internal space S surrounded by the vertical plate 101a etc. and the horizontal plate 102a etc. A material (diaphragm 104) is installed. Thereby, even if a strong load is applied from the upper side or the side of the box pillar 100, the plurality of diaphragms 104 can prevent the deformation of the vertical plates 101a and the like. Thereby, the load resistance of the box pillar 100 can be enhanced, and the box pillar 100 can be widely used as a pillar member of a large building or the like.

  The diaphragm 104 is a substantially rectangular plate-like member having a predetermined thickness and substantially matching the cross-sectional shape of the space S inside the box column 100, and is made of steel like the vertical plates 101a and the like and the horizontal plates 102a and the like. It is configured using a thick plate. Then, by welding the inner surface 103 of each of the vertical plates 101a and the like and the horizontal plate 102a and the side 105 of the diaphragm 104 in the space S inside the box column 100, the diaphragm 104 can be the vertical plates 101a and the like and the horizontal plates. 102a etc. (For example, refer patent document 1).

  Here, the diaphragm 104 used as a reinforcing material may have, for example, a circular sculpted hole 109 at the central portion (see FIG. 9). Even with the wrinkled hole 109, the function as a reinforcing material can be sufficiently exhibited. Furthermore, after installing the box pillar 100 as a pillar member in a part of a large building, a concrete material is poured into the space S inside the box pillar 100 and then solidified, whereby the inside of the box pillar 100 is filled with concrete. Column members may be constructed. In this case, the space S inside the box pillar 100 divided by the plurality of diaphragms 104 can be communicated by the above-mentioned scoop holes 109, which has an advantage of easily performing the pouring operation of the concrete material. By completely solidifying the concrete material filled in the internal space S, mechanical properties such as load resistance of the box column 100 can be further improved.

  When the diaphragm 104 is attached to the box column 100, for example, a pair of vertical plates 101a and 101b and a pair of horizontal plates 102a and 102b are temporarily welded to prepare a temporary assembly 110 temporarily assembled in a square tube shape (FIG. 10 etc. reference). Then, the inner surfaces 103 of the vertical plates 101a and the like and the horizontal plates 102a and the like and the side 105 of the diaphragm 104 are respectively welded by "electroslag welding".

  In order to carry out such electroslag welding, a predetermined air gap 106 is provided between the inner surface 103 of the longitudinal plate 101 a or the like (or the horizontal plate 102 a or the like) and the side 105 of the diaphragm 104. It is necessary to enter (not shown) and gradually pull out the torch from the air gap 106 while performing electroslag welding to form the welding layer 107. Finally, the welding between the longitudinal plates 101a and the like and the diaphragm 104 is strongly fixed by the welding plates 107 formed with uniform widths between the longitudinal plates 101a and the like (or the lateral plates 102a and the like) and the diaphragm 104. (See FIG. 11 etc.). In addition, as shown in FIG. 11, a part of welding layer 107 may be protruded and formed from the outer surface 111 of the longitudinal plate 101a etc. from the hole H. A portion of the weld layer 107 protruding from the outer surface 111 is scraped to be flush with the outer surface 111 by a grinding process or the like thereafter. Furthermore, “submerged arc welding” is performed between the vertical plates 101 a and the like and the horizontal plates 102 a and the like.

  Here, in the case of performing the above-described electroslag welding, the diaphragm 104 before welding is attached to the inner surface 103 of the longitudinal plate 101a or the like between a pair of contact plates 108 separated from each other by an interval substantially equal to the width of the diaphragm 104. (See, for example, FIG. 12). In the temporary assembly 110 temporarily assembled in such a state, it was necessary to provide a "hole H" for welding operation for causing the tip of the torch for welding to enter the space 106 inside the temporary assembly 110. (See Figure 10).

  In general, when drilling a hole (hole) as described above on a thick plate (plate-like member) made of a metal material such as the vertical plate 101a, for example, a radial drilling machine or the like which is a well-known drilling device. Is used. However, in the case of a radial drilling machine or the like, the drilling process of a plate-like member is mainly intended, and in the case of directly drilling a three-dimensional machining object such as the box pillar 100, a lifting type radial drilling machine. It was necessary to use etc. Therefore, use of a gantry drilling device (so-called "gantry drill") is envisaged. The gantry drilling device (punching device) includes a mounting table for supporting a work (the thick plate or the like) to be drilled, and a pair of guides arranged along the longitudinal direction (X axis) of the mounting table. Rails, a gate-shaped (gate-like) gantry unit supported by a guide rail and freely moved along the X-axis according to the guide rail, and Y mounted on the gantry unit and orthogonal to the X-axis of the mounting table It mainly comprises a drill unit having a drilling drill movable along the axial direction.

  Thus, the hole H can be drilled at the specified position of the work by moving the drill to any position on the work and raising and lowering the drill along the Z-axis direction orthogonal to the X-axis and Y-axis. be able to.

JP 7-1148 A

  However, the drilling apparatus such as the above-mentioned conventional radial drilling machine is intended for drilling a flat plate like thick plate, and drills a three-dimensional shape such as a box pillar used as a pillar member. It was not intended as a target. On the other hand, in the case of the conventional gantry drilling device, the following problems may occur.

  That is, since the box pillar is assumed to be used as a pillar member or the like of a high-rise building, one having a relatively large size is manufactured. For example, the width of each of the vertical plate and the horizontal plate may exceed 1000 mm, and the total length of the box pillar may be 10 m or more.

  Therefore, it was not possible to place the longitudinal direction of the box column and the X axis of the mounting table in complete alignment. As a result, during the drilling operation by the drilling device, complicated adjustment and confirmation operations such as determining each drilling position each time and aligning the drill tip of the drilling drill with the drilling position are required. there were.

  In order to enable drilling of a workpiece having a three-dimensional shape (box shape) as described above, it has been necessary to set a drill unit such as a drilling drill at a higher position than in the past, as compared to the prior art. As a result, the position of the girder of the gantry unit to which the drill unit is attached inevitably increases. The drill unit is a heavy load equipped with a drive motor or the like for rotating the drilling drill, and such heavy load is attached to the gantry unit at a high position, so that the center of gravity of the gantry unit and drill unit is higher than before. I came to a place.

  As a result, compared to the conventional drilling device, the gantry unit was unstablely supported with respect to the X-axis guide rail, or the rotation of the drilling drill made the vibration more likely to occur. As a result, the accuracy of the drilling process on the box column is lowered, and problems such as deviation of the drilling position from the designated drilling position may occur.

  Also, in the case where the tip of the drilling drill is made to coincide with the predetermined correct drilling position (designated drilling position) of the work, conventionally, after performing so-called "marking" at the designated drilling position with a mark or the like, The tip of the drilling drill was manually moved to the position, and the operator visually checked. Here, a large size building as described above requires a plurality of box columns, and a plurality of diaphragms need to be fixed by welding to each box column. Therefore, performing the alignment operation as described above for each drilling position has a problem of increasing the manufacturing time of the box column. That is, there existed a possibility that manufacturing efficiency might fall.

  Furthermore, when adjusting and confirming the drilling position, it is necessary for the operator to directly view the designated drilling position of the workpiece and the actual drilling position by the drilling drill after stopping operation of the drilling drill of the drilling device with certainty. There was a need to move the worker to the point. In addition, there is a possibility that it is difficult to visually recognize these positions directly or to force the worker into an unreasonable posture. In addition, it is necessary to approach the drilling drill itself, which causes problems in the safety of the operation and increases the possibility of occurrence of an accident due to the drilling drill.

  Therefore, in view of the above situation, the present invention can promptly adjust and confirm the drilling position of the drilling drill with respect to the work, shorten the working time required for the drilling, and improve the efficiency of manufacturing the box pillar. The first task is to plan the work, and the second task is to suppress the occurrence of vibration etc. in drilling the workpiece with a gantry unit with a high center of gravity, without forcing the worker into an unreasonable posture, and drilling A third object of the present invention is to provide a drilling device whose third task is to ensure the safety of work in processing, and a method for drilling using the drilling device.

  According to the present invention, a drilling device and a drilling method that solve the above-mentioned problems are provided.

[1] An X-axis and a Y-axis orthogonal to the X-axis are defined, and a placement table on which a workpiece to be drilled is placed on the table top, and disposed on both sides of the placement table along the X-axis A pair of X-axis guide rails, a pair of rolling carriages supported respectively on the X-axis guide rails, a pair of legs hanging upward from the rolling carriage, and the Y A gate-shaped gantry having a girder in longitudinal alignment with the axis and bridged between the pair of legs, and horizontally rollable along the X axis above the placing table. A unit, a drill base mounted on the girder and configured to be horizontally rollable along the y-axis, and a drill base mounted on the drill base and orthogonal to the x-axis and the y-axis Vertically movable along the Z axis A gantry drilling apparatus comprising: a drill unit having a drill drill formed therein; and a rolling control unit for controlling rolling of the gantry unit and the drill base of the drill unit, wherein the girder is at least two. A drilling position in which one or more drill units are mounted independently of one another, the drill unit irradiates a laser to a projection surface of the work placed on the mounting table, and indicates a drilling position of the drilling drill The rolling control unit further includes: a laser irradiation unit that projects a pattern; and an imaging unit that captures a laser projection image including the drilling position pattern projected on the workpiece and the projection plane around the drilling position pattern; The laser imaged so that the specified perforation position and the projected perforation position pattern previously scored on the A gantry type drilling device which controls rolling of the gantry unit and the drill unit based on a projected image.

[2] A rail clamp comprising: a pair of rail clamps for gripping the X-axis guide rail in the left and right direction and / or up and down direction; and a rail clamp control unit for driving and controlling the rail clamps to the rail gripping position and the rail gripping release position. The gantry drilling device according to [1], further comprising: an X-axis guide rail which clamps the X-axis guide rail by the rail clamp and restricts horizontal movement of the gantry unit along the X-axis.

[3] The gantry according to the above [1] or [2], wherein the work is a temporary assembly of a square box pillar having a square cylindrical shape, which is temporarily welded by combining a pair of vertical plates and a pair of horizontal plates. Die puncher.

[4] The rolling control unit rolls the gantry unit and the drill unit by numerical control that is pre-programmed for aligning the designated drilling position and the drilling position pattern [1] to [3]. The gantry-type perforation device according to any one of the above.

[5] A clamp support portion installed at the lower part of the leg and having a L-shaped cross section, a leg clamp installed on the clamp support portion, and driving the leg clamp to the leg clamp position and the leg clamp release position The gantry drilling device according to any one of the above [1] to [4], further comprising: a leg clamp unit including a leg clamp control unit to control, and fixing the leg to the rolling carriage.

[6] A drilling method using the gantry drilling device according to any one of the above [1] to [5], wherein the workpiece is placed on the upper surface of the loading table of the gantry drilling device. Placing the gantry unit and the drill unit of the gantry drilling device along the X axis of the placing table and the Y axis orthogonal to the X axis, respectively; Laser beam is irradiated to the workpiece and laser beam is projected to the workpiece to project a drilling position pattern indicating the drilling position of the drilling drill. An irradiation step, an imaging step of imaging a laser projection image including the drilling position pattern projected onto the work and a projection plane around the drilling position pattern; A gantry position adjustment step of controlling rolling of a tree unit and the drill unit, and adjusting based on the imaged laser projection image so that the designated drilling position and the drilling position pattern coincide with each other. A drilling method using a drilling device.

  According to the drilling apparatus of the present invention, by providing the configuration related to the drill unit provided with the laser position irradiating unit and the imaging unit, the drilling position of the drilling drill can be easily and safely prepared and confirmed at the designated drilling position designated in advance. You can

  Furthermore, by providing the rail clamp portion and the leg clamp portion, it is possible to increase the rigidity of the gate-shaped gantry unit at the time of drilling by the drilling drill, and to suppress the vibration of the gantry unit. Therefore, even if the gantry unit has a high center of gravity position, it is possible to accurately perform drilling on a workpiece such as a three-dimensional box pillar used as a pillar member. Furthermore, according to the drilling method of the present invention, it is possible to perform drilling on a work such as a box pillar by using the above-described drilling device.

It is an explanatory view showing a schematic structure of plane view of a perforation device of this embodiment. It is an explanatory view showing a schematic structure of a plain view of a perforation device. It is explanatory drawing which shows the schematic structure of the side view of the drill unit attached to the girder. It is explanatory drawing which shows schematic structure of the laser position irradiation part of a drill unit, an imaging part, and the projection surface of a workpiece | work. It is explanatory drawing which shows typically the projection image of the state which the designation | designated drilling | piercing position of a workpiece | work and drilling | punching position pattern do not correspond. It is explanatory drawing which shows typically the projection image in the state to which the designation | designated drilling | piercing position of a workpiece | work and drilling | punching position pattern corresponded. It is explanatory drawing which shows schematic structure of the rail clamp part in the drilling | piercing apparatus of another example structure of this invention. It is explanatory drawing which shows schematic structure of the leg clamp part in the drilling | piercing apparatus of another example structure of this invention. It is a perspective view showing a schematic structure of a box pillar. It is a front view which shows schematic structure of a temporary assembly. It is sectional drawing which shows schematic structure of the box pillar after welding of a diaphragm. It is explanatory drawing which shows the state except the horizontal plate of the upper part of a temporary assembly.

  Hereinafter, the drilling apparatus and the drilling method of the present invention will be described in detail with reference to the drawings. Here, the drilling apparatus and the drilling method of the present invention are not limited to the following embodiments, and various design changes, modifications, improvements and the like can be added without departing from the scope of the present invention. It is a thing.

  The drilling apparatus 1 according to an embodiment of the present invention is a so-called "gantry type" drilling apparatus 1 as shown in Figs. 1 to 6, and includes a mounting table 10, a pair of X axis guide rails 20a and 20b, It mainly comprises a gantry unit 30, a drill unit 40, and a rolling control unit (not shown). By using the drilling device 1 of the present embodiment, at any position of the workpiece W to be drilled mounted on the mounting table 10, the Y axis orthogonal to the X axis and the X axis of the mounting table 10 (for example, The gantry unit 30 and the drill unit 40 can be rolled along (see FIG. 2) to match the drilling position DP of the drilling drill 42 of the drill unit 40. Thereby, holes H for welding operation (see, for example, FIGS. 10 and 11) can be drilled. On the other hand, in the drilling method according to the embodiment of the present invention, the hole W for welding operation can be drilled in the work W using the above-described drilling device 1.

  The drilling target of the drilling device 1 of the present embodiment is for producing a steel box column (see FIG. 9) used as a final product, a column member of a large building or the like, and the thickness of the steel A temporary assembly 110 is used in which a pair of vertical plates 101a and 101b and a pair of horizontal plates 102a and 102b, which are plates, are temporarily welded together to form a square tubular shape (see FIG. 10, etc., below) We call it "work W." Here, the work W has a space S surrounded by the longitudinal plate 101 a and the like and the lateral plate 102 a and the like inside. By using the drilling device 1 of the present embodiment, it is possible to drill a hole H for welding operation for fixing a plurality of diaphragms 104 for improving load resistance and the like by electroslag welding in the space S. it can.

1. Perforating apparatus If the configuration of each of the perforating apparatus 1 of the present embodiment is described in detail, the mounting table 10 has an X axis and a Y axis orthogonal to the X axis, and the work W is placed horizontally on the table upper surface 11 It is for mounting in the state of The size of the work W is not particularly limited, but as described above, since it is the steel box pillar 100 (corresponding to the square box pillar in the present invention) which is a pillar member as a final product, the vertical plate 101a, As the 101b and the horizontal plates 102a and 102b, for example, those having a wide width of about 200 mm to 1500 mm may be used, and the lengths of the vertical plates 101a etc. and the horizontal plate 102a are also 10 m or more (e.g. more than 700 m) is there. That is, the work W is a large long body and heavy because it is made of steel.

  Therefore, the mounting table 10 needs to have a rigid structure in order to stably support the work W from the lower side in a state in which the longitudinal direction of the workpiece W which is a heavy object and a heavy object coincides with the horizontal direction. The mounting table 10 can be constructed, for example, by combining a plurality of steel materials and the like. Thereby, the workpiece W is mounted on the mounting table 10 in a state in which the longitudinal directions in the horizontal direction coincide with each other without bending by its own weight. In addition, the mounting table 10 may be movable along the X-axis direction as a carriage. That is, the work W placed on the placement table 10 can be moved so as to be located below the girder 35 of the gate-shaped gantry unit 30 described later.

  At this time, placement is performed so that the longitudinal direction of the work W and the X axis (see FIG. 1 etc.) of the placement table 10 substantially coincide. However, as described above, since the work W is a long body, it is difficult to place the work W in the longitudinal direction completely in line with the X axis. Therefore, the X-axis of the mounting table 10 and the longitudinal direction of the work W may not be completely coincident with each other, and the mounting may be performed with a slight deviation. In the case of this degree of deviation, it is possible to perform adjustment including the deviation in control to match the drilling position DP of the drilling drill 42 described later.

  The pair of X-axis guide rails 20a and 20b of the punching device 1 are disposed parallel to each other on both sides in the left-right direction of the mounting table 10 (corresponding to the vertical direction in FIG. 1 and the horizontal direction in FIG. 2). The rolling direction of the gantry unit 30, which will be described later, is restricted in the X axis direction. As shown in FIGS. 1 and 2, the X-axis guide rails 20a and 20b include a rail main body 21 having a substantially I-shaped cross section, and a rail fixing portion 22 for fixing the rail main body 21 to the installation surface G. ing.

  The gantry unit 30 can be freely rolled along the X axis by mounting the gantry unit 30 on the rail upper end portion 23 of the rail main body 21. In other words, the gantry unit 30 can be moved to any position in the longitudinal direction of the workpiece W. The X-axis guide rails 20a and 20b can be formed using the same steel material as a general rail member. In this case, a linear member having no distortion is used so that there is no deformation or bending along the longitudinal direction (corresponding to the X axis) of the rail main body 21.

  The gantry unit 30 is mounted on the respective X-axis guide rails 20a and 20b and rolls horizontally along the X-axis of the mounting table 10. The gantry unit 30 is a substantially flat-shaped carriage base 31a or 31b. , And a pair of rolling carriages 33a and 33b having a plurality of wheel portions 32 rotatably supported at lower portions of the carriage base portions 31a and 31b, and upward from approximately the center of the rolling carriages 33a and 33b Longitudinal direction coincides with a pair of vertically installed legs 34a and 34b and a Y-axis (see FIGS. 1 and 2) orthogonal to the X-axis of the mounting table 10, and is bridged between the pair of legs 34a and 34 And a girder 35. Thereby, as shown in a front view of the punching device 1 of FIG. 2, the gantry unit 30 has a gate shape (gate shape) in the state of straddling the upper side of the mounting table 10 and the work W.

  In the perforation device 1 of the present embodiment, as shown in FIGS. 1 and 3, the girders 35 a and 35 a are separated from each other in the front-rear direction (corresponding to the left and right direction in FIG. 1). It is comprised by the girder 35b. Y-axis guide rails 37a and 37b disposed along the Y axis of the mounting table 10 are disposed on the upper surfaces 36 of the girders 35a and 35b. In the present invention, the girder is not limited to the above configuration, as long as the drill unit 40 described later can freely roll along the Y axis.

  The rolling means (driving means) for the gantry unit 30 to roll along the X-axis according to the X-axis guide rails 20a and 20b is not particularly limited. For example, a known drive motor may be used. The generated driving force may be transmitted to the gantry unit 30 via a gear box or the like and rolled, or the driving force may be generated using a hydraulic cylinder or the like. The rolling control unit of the punching device 1 according to the present embodiment can arbitrarily control the rolling amount in the X-axis direction of the gantry unit 30. For example, fine control is performed in units of several mm to several cm. Can. The rolling control unit can adopt substantially the same configuration as a well-known gantry drilling device, and the operator operates an operation control console (operation panel) provided in a part of the drilling device 1. Thus, rolling of the gantry unit 30 can be controlled. Therefore, the detailed description is omitted. The operation control console is provided with various components such as a display for controlling the operation of a laser irradiation unit 45 and an imaging unit 47 described later, and displaying the imaged laser projection image 46.

  The drill unit 40 is constructed between the front girder 35a and the rear girder 35b of the gantry unit 30 described above, and is formed so as to be horizontally rollable along the Y axis of the mounting table 10; It is mounted on the drill base 41 and vertically movable along the Z-axis (see FIG. 2) orthogonal to the X-axis and Y-axis of the mounting table 10, and the work W can be drilled at its tip. Drilling drill 42.

  Here, a pair of drill units (a left drill unit 40a and a right drill unit 40b) are attached to the gantry unit 30 of the present embodiment. The left drill unit 40a and the right drill unit 40b can be controlled to be rollable by the rolling control unit along the Y axis according to the girder 35 independently of each other. That is, the workpiece W can be processed by simultaneously controlling two axes. Thereby, by combining the rolling along the X axis of the gantry unit 30 described above, the rolling of the X axis and the Y axis is controlled at an arbitrary position of the work W placed on the mounting table 10 The position of the tip of the drilling drill 42 can be aligned with the The drill units 40 are not limited to a pair as described above, and at least two or more drill units may be attached to the gantry unit 30. That is, two or more axes may be used.

  In addition, the rolling means (drive means) for each drill unit 40 to roll along Y-axis is not specifically limited, It employ | adopts a known structure similarly to rolling of the gantry unit 30 mentioned above. can do. Therefore, detailed description of the configuration related to these controls will be omitted here. Further, the mechanism for moving the drilling drill 42 up and down along the Z-axis in order to perform the drilling process on the workpiece W, the drive means related to the movement, and the like are the same, so the detailed description will be omitted.

  Furthermore, the drill unit 40 of the drilling device 1 of the present embodiment irradiates the laser L onto the projection surface 44 (corresponding to the surface of the workpiece) of the workpiece W placed on the mounting table 10 in proximity to the drilling drill 42. And a laser irradiation unit 45 for projecting a drilling position pattern LP indicating the drilling position DP of the drilling drill 42, and a laser including the drilling position pattern LP projected on the projection surface 44 of the work W and the projection surface 44 around it And an imaging unit 47 for imaging the projected image 46 (see FIGS. 3, 4, 5, 6). In addition, in FIG. 4, illustration of the structure of drilling drill 42 grade | etc., Is abbreviate | omitted for simplification. Further, in FIG. 4, the hatched area is a range in which the imaging unit 47 captures an image as the laser projection image 46.

  By providing such a configuration, the imaged laser projection image 46 is confirmed, and the drilling drill 42 is correctly drilled so that the specified designated drilling position SP and the drilling position pattern LP previously scored on the work W coincide with each other. It becomes possible to adjust to the position DP. More specifically, when the designated drilling position SP and the drilling position pattern LP deviate from each other (see FIG. 5), the operator confirms the laser projection image 46 on the display and recognizes the deviation, and the rolling is performed. The control unit is operated to roll the gantry unit 30 and the drill unit 40 at an appropriate rolling amount according to the deviation. Furthermore, by performing image processing based on the obtained laser projection image 46, it is possible to automatically calculate and control an appropriate rolling amount.

  The gantry unit 30 and the drill unit 40 can move the drilling drill 42 to any position on the mounting table 10 by designating the X axis and the Y axis, so that the designated drilling position SP and the drilling position pattern LP Can be matched while confirming on the display (see FIG. 6).

  Note that, as described above, the operation and control of the gantry unit 30 and the drill unit 40 are not limited to what the operator manually performs. That is, a control mechanism of numerical control (NC control) conventionally known may be adopted for the gantry unit 30 and the drill unit 40. In this case, the operator visually confirms whether the drilling position DP of the drilling drill 42 numerically controlled by programming matches the designated drilling position SP of the work W by visual inspection, and interrupts the numerical control if there is a gap, The rolling of the gantry unit 30 can be controlled manually. By using the above-described numerical control in combination, the drilling process on the work W can be further simplified, and the working time can be shortened.

  As a result, the tip of the drilling drill 42 is actually brought close to the designated drilling position SP of the work W as in the conventional drilling device, and the confirmation operation of the drilling position DP performed visually by the operator becomes unnecessary. It is possible to facilitate the positioning work of the above and shorten the working time. Furthermore, since the operator does not have to move to the drilling position DP for visual confirmation, the working time can be shortened and the safety of the work can be ensured.

  The laser irradiation unit 45 may be, for example, an RGB laser provided with a laser diode capable of irradiating each of the three color lasers L even if it is a single color laser which irradiates a single color laser L such as red, blue or green. It does not matter. The laser L irradiated from the laser diode of the laser irradiation unit 45 has a high directivity, and can accurately project the perforation position pattern LP on the projection surface 44.

  Here, the position of the drilling position pattern LP irradiated to the projection surface 44 corresponds to the drilling position DP with which the tip of the drilling drill 42 abuts. In the punching apparatus 1 of the present embodiment, the designated perforation position SP to be marked on the work W is indicated by “X-like” or “+ -like” in which two straight lines are crossed, and irradiation is performed by the laser irradiation unit 45 The same drilling position pattern LP is set to be "X-shaped" or "+ -shaped". It is determined that the designated perforation position SP and the perforation position DP (the perforation position pattern LP) coincide with each other by matching the intersection points where the two straight lines intersect each other.

  On the other hand, as the imaging unit 47, a known CCD camera or the like capable of shooting a moving image can be used. Here, the imaging unit 47 can not be installed immediately above the drilling position DP of the drilling drill 42. Therefore, it is installed in the state (refer FIG. 4) which adjoins to the drilling drill 42, and inclines by a predetermined | prescribed inclination angle (same also about the laser irradiation part 45). Therefore, the imaging unit 47 corrects the positions of the drilling position pattern LP and the designated drilling position SP as viewed from directly above the drilling drill 42 in the displayed laser projection image 46.

  Thus, while rotating the drilling drill 42 in a state in which the drilling position DP of the drill unit 40 and the designated drilling position SP of the workpiece W are aligned, the drilling drill 42 is moved downward along the Z axis. Thereby, the drilling process of the workpiece W can be performed by the drilling drill 42. In addition, in the case of the drilling apparatus 1 of the present embodiment, a pair of drill units 40 arranged in parallel on the left and right can be independently controlled, and two holes H can be drilled simultaneously in the work W it can.

  Furthermore, the drill unit 40 includes a fine adjustment moving mechanism (not shown) capable of moving the drilling drill 42 along the X axis and / or the Y axis with respect to the drill base 41. As described above, the workpiece W to be drilled is a large long body, and the rolling amount of the gantry unit 30 and the drill unit 40 may also roll in units of several mm to several m. Therefore, if it is intended to roll the drilling position DP slightly along the X axis and / or Y axis, it takes a lot of driving force and time to roll the gantry unit 30 and the drill unit 40 directly. It is expected that.

  Therefore, by moving the drilling drill 42 itself of the drill unit 40 relative to the drill base 41, the fine adjustment operation of the drilling position DP can be performed easily and in a short time. Furthermore, power consumption and the like can be suppressed more than driving the gantry unit 30 and the like. As described above, by using the above-described rolling of the gantry unit 30 and the drill unit 40 in combination with the fine adjustment moving mechanism, the drilling drill 42 can be rapidly moved to the drilling position DP with less energy consumption in a short time. it can. Thereby, efficient drilling can be performed on the work W.

  Furthermore, as shown in FIG. 7, for example, as a punching device 1a of another example configuration of the present invention, a pair of X-axis guide rails 20a, 20b are laterally (Y-axis) and / or vertical (Z-axis) A rail clamp unit 50 having a pair of rail clamps 51 grasped from the side and a rail clamp control unit 52 drivingly controlling the rail clamps 51 to the rail grasping position and the rail grasping release position may be provided. As a result, the rail clamp 21 clamps the rail body 21 of the X-axis guide rails 20a and 20b with the pair of rail clamps 51 by the gripping operation (clamping operation) of the X-axis guide rails 20a and 20b by the rail clamp unit 50. The frictional force between the carriage bases 31a and 31b of the first embodiment can be increased. This restricts horizontal rolling of the rolling carriages 33a and 33b along the X axis. In other words, the rolling of the gantry unit 30 is braked and the gantry unit 30 is positioned at any X axis position. It can be fixed. In addition, in the punching apparatus 1a of another example structure shown in FIG. 7, about the same structure as the punching apparatus 1 of this embodiment, the same number is attached | subjected and detailed description is abbreviate | omitted here (following, FIG. As well).

  More specifically, the rail clamp portion 50 in the drilling apparatus 1a of another example configuration is formed from the left and right sides of the X-axis guide rails 20a and 20b (corresponding to the left and right direction in FIG. 7). It has a pair of rail clamps 51 attached so as to hold the rail upper end portion 23 and is usually set at the rail grip release position. At this time, the rail clamp 51 and the rail body 21 are not in contact with each other (see the solid line in FIG. 7). Therefore, in such a state, the gantry unit 30 can freely roll in the horizontal direction along the X axis under control of the rolling control unit, and can move to any position of the X axis.

  Then, after rolling the gantry unit 30 to a predetermined X-axis position by the rolling control unit, the pair of rail clamps 51 of the rail clamp unit 50 are pulled up in the clamp direction C (see the arrow direction in FIG. 7). Displace to gripping position. Here, the rail clamp control unit 52 for pulling up the rail clamp 51 is configured to have a hydraulic cylinder. Therefore, the rail clamp 51 moves to the rail holding position using the hydraulic driving force of the hydraulic cylinder (see the broken line in FIG. 7). As a result, the rail clamp 51 comes in contact with the lower portion of the rail upper end portion 23 of the rail body 21, and a strong frictional force is generated between the rail clamp 51 and the rail body 21. As a result, rolling of the gantry unit 30 with respect to the X-axis guide rails 20a and 20b is restricted.

  The drilling device according to the present invention has a position of the drilling drill 42 for drilling the workpiece W, in other words, a position where the drilling position of the workpiece W is high, as compared to the conventional drilling of the plate-like member. Therefore, the gravity center position of the drilling drill 42 (drill unit 40) and the gantry unit 30 which supports this necessarily becomes high. In addition, a pair of heavy drill units 40 is attached to one gantry unit 30. Then, since the pair of drill units 40 roll independently along the Y axis, the position of the center of gravity at the high position is displaced along the Y axis. Therefore, the gantry unit 30 supporting the drill unit 40 may be unstable such as swinging in the X axis direction and / or the Y axis direction.

  Therefore, as shown in the drilling apparatus 1a according to another configuration of the present invention, by employing the rail clamp portion 50, the gantry unit 30 and the X-axis guide rails 20a and 20b are firmly fixed when drilling. It is possible to prevent rocking of the gantry unit 30 due to slight movement or vibration of the gantry unit 30 in the X-axis direction. As a result, even in the case of drilling the work W for manufacturing the box-shaped box column to be drilled, stable drilling can be performed.

  Furthermore, as shown in FIG. 8, for example, as shown in FIG. 8, as a drilling device 1 b of another example configuration of the present invention, a clamp support 61 installed in the lower part of the leg and exhibiting an L-shaped cross section and a clamp support 61 are installed. You may provide the leg clamp part 60 which has the leg clamp 62 which carried out the leg clamp 62 and the leg clamp control part 63 which drive-controls the leg clamp 62 up and down between the leg clamp position and the leg clamp release position. . Here, the leg clamp 60 can be provided, for example, in the vicinity of the roots of the legs 34a and 34b vertically provided from the rolling carriages 33a and 33b.

  According to the leg clamp unit 60 configured as described above, the leg clamp control unit 63 drives the leg clamp 62 to the leg clamp position, whereby the clamp support unit 61 having an L-shaped cross section that is provided below the legs 34a and 34b. Is pushed downward by the leg clamp 62. That is, it fixes to rolling truck | car 33a, 33b which supports leg 34a, 34b.

  Thereby, at the time of the drilling process by the drilling drill 42, the generation of the vibration between the rolling carriages 33a and 33b and the legs 34a and 34b is suppressed, the rattling and the like at the time of the drilling process are prevented, and the generation of the vibration is suppressed. be able to. The leg clamp control unit 63 can drive and control the leg clamp 62 using the hydraulic driving force of the hydraulic cylinder, as in the rail clamp control unit 52.

2. Next, an example of a drilling method using the above-described drilling device 1 will be described. First, the workpiece W to be drilled is placed on the table upper surface 10a of the placement table 10 of the punching device 1 (work placement step). As described above, the workpiece W is mounted such that the longitudinal direction of the workpiece W and the X axis of the mounting table 10 substantially coincide with each other. Thereafter, the gantry unit 30 and the drill unit 40 of the drilling device 1 are rolled so that the drilling position DP of the drilling drill 42 is located near the designated drilling position SP previously scored on the work W (proximity step). Here, the proximity step may be performed by the operator visually or while confirming with the display on which the image captured by the imaging unit is displayed. Furthermore, automatic control may be performed based on previously input numerical values.

  With the drilling drill 42 in close proximity to the designated drilling position SP of the work W, the laser irradiation unit 45 applies the laser L to the work W (laser irradiation process). Thereby, the drilling position pattern LP indicating the drilling position DP is projected on the projection surface 44 of the workpiece W. Then, the laser projection image 46 including the perforation position pattern LP projected onto the workpiece W and the projection surface 44 around the perforation position pattern LP is imaged by the imaging unit 47 (imaging step). After that, the operator controls the rolling of the gantry unit and the drill unit while checking the laser projection image 46 obtained by the imaging process so that the designated drilling position SP and the drilling position pattern LP (= drilling position DP) coincide. Adjust to (punch position adjustment process). In the drilling method of the present embodiment, as shown in FIG. 5 and FIG. 6 already shown, “+” projected on the projection surface 44 of the workpiece W is designated with respect to the designated drilling position SP of “+” marked in advance. Control is performed so that the respective intersection points of the drilling position pattern LP (see the broken lines in FIGS. 5 and 6) coincide with each other, and the drilling position DP of the drilling drill 42 is adjusted.

  After the adjustment of the drilling position DP is completed, the drilling operation of the workpiece W can be performed by controlling the rotation of the drilling drill 42 and further moving the drilling drill 42 downward along the Z axis. At this time, the rail clamp unit 50 is controlled before the start of drilling, and the X axis guide rails 20a and 20b are gripped by the pair of rail clamps 51 driven to the rail gripping positions respectively, and the horizontal direction along the X axis of the gantry unit 30 And the leg clamp portion 60 may be used to fix the rolling carriages 33a and 33b and the legs 34a and 34b (leg clamping step).

  In this manner, according to the drilling method of the present embodiment, holes H for welding operation for electroslag welding are accurately applied to the workpiece W (temporary assembly 110) to be a pillar member as a final product. The drilling process can be performed in a state in which safety is secured without forcing the worker into an unreasonable posture.

  According to the perforation device of the present invention, it can be particularly usefully used as a gantry-type perforation device used in a manufacturing process for manufacturing a box pillar (square box pillar) used as a pillar member. Furthermore, the drilling method of the present invention can be particularly usefully used in a drilling step of drilling a hole for welding operation for electroslag welding using the above-mentioned drilling device (gantry type drilling device).

1, 1a, 1b: Perforating device, 10: loading table, 11: table upper surface, 20a, 20b: X axis guide rail, 21: rail main body, 22: rail fixing portion, 23: rail upper end, 30: gantry unit , 31a, 31b: truck base, 32: wheel portion, 33a, 33b: rolling truck, 34a, 34b: leg, 35: girder, 35a: front girder (girder), 35b: rear girder (girder), 36: Girder top surface, 37a, 37b: Y-axis guide rail, 40: drill unit, 40a: left drill unit (drill unit), 40b: right drill unit (drill unit), 41: drill base, 42: drilling drill, 44: projection Surface 45: laser irradiation unit 46: laser projection image 47: imaging unit 50: rail clamp unit 51: rail Pumps 52: Rail clamp control 60: Leg clamps 61: Clamp support 62: Legs clamp 63: Controls 100: Box post (square box post) 101a, 101b: vertical plate 102a, 102b: horizontal plate, 103: inner surface, 104: diaphragm, 105: side edge, 106: air gap, 107: weld layer, 108: contact plate, 109: scissor hole, 110: temporary assembly, 111: outer surface, C: clamp Direction, DP: drilling position, G: installation surface, H: hole, L: laser, LP: drilling position pattern, S: space, SP: designated drilling position, W: work.

Claims (6)

An X-axis and a Y-axis orthogonal to the X-axis, and a mounting table on which a workpiece to be drilled is mounted on the table upper surface;
A pair of X axis guide rails disposed on both sides of the placing table along the X axis;
A pair of rolling carriages supported respectively on the X-axis guide rail, a pair of legs hanging upward from the rolling carriage, and a pair of Y-axes in longitudinal direction, A gate-shaped gantry unit formed so as to be horizontally rollable along the X-axis along the X axis, with a girder installed between the legs;
A drill base mounted on the girder and formed so as to be horizontally rollable along the Y-axis, and a Z-axis mounted on the drill base and orthogonal to the X-axis and the Y-axis A drill unit having a drilling drill formed so as to be vertically movable along the
A gantry drilling device comprising: a gantry unit; and a rolling control unit configured to control rolling of the drill base of the drill unit,
The girder is
At least two or more of the drill units are mounted independently of one another;
The drill unit is
A laser irradiation unit which irradiates a laser to a projection surface of the work placed on the placing table and projects a drilling position pattern indicating a drilling position of the drilling drill;
And an imaging unit configured to capture a laser projection image including the drilling position pattern projected onto the work and the projection plane around the drilling position pattern.
The rolling control unit is
A gantry for controlling the rolling of the gantry unit and the drill unit based on the imaged laser projection image so that the designated drilling position and the projected drilling position pattern previously scored on the workpiece coincide with each other Die puncher. A pair of rail clamps for gripping the X-axis guide rail in the left and right direction and / or the up and down direction;
The rail clamp unit further includes a rail clamp control unit that drives and controls the rail clamps to the rail gripping position and the rail gripping release position,
2. The gantry drilling device according to claim 1, wherein the X-axis guide rail is clamped by the rail clamp to restrict horizontal movement of the gantry unit along the X-axis. The work is
The gantry-type drilling device according to claim 1 or 2, wherein the gantry is a temporary assembly of a square box pillar having a square tubular shape which is temporarily welded by combining a pair of vertical plates and a pair of horizontal plates with each other. The rolling control unit is
The gantry drilling device according to any one of claims 1 to 3, wherein the gantry unit and the drill unit are rolled by numerical control that has been pre-programmed to align the designated drilling position and the drilling position pattern. A clamp support portion provided at a lower portion of the leg and having an L-shaped cross section;
A leg clamp mounted on the clamp support;
And a leg clamp control unit for driving and controlling the leg clamps to the leg clamp position and the leg clamp release position.
The gantry drilling device according to any one of claims 1 to 4, wherein the leg is fixed to the rolling carriage. A drilling method using the gantry drilling device according to any one of claims 1 to 5, the drilling method comprising:
A work placement step of placing a work on the upper surface of the mounting table of the gantry drilling device;
The gate position gantry unit and the drill unit of the gantry drilling device are respectively rolled along the X axis of the placing table and the Y axis orthogonal to the X axis to set the drilling position of the drilling drill of the drill unit A proximity step of rolling the workpiece to a position near a designated perforation position previously scored;
Irradiating the workpiece with a laser to project a drilling position pattern indicating a drilling position of the drilling drill;
An imaging step of imaging a laser projection image including the drilling position pattern projected onto the work and a projection plane around the drilling position pattern;
A gantry position adjusting step of controlling rolling of the gantry unit and the drill unit, and adjusting based on the imaged laser projection image so that the designated drilling position and the drilling position pattern coincide with each other Method of drilling using a die drilling device.

Images