JP2019084620A - 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; a drill unit 40 which is 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 punching device 1 further includes: rail clamp parts 50 which hold the X axis guide rails 20a, 20b; and leg clamp parts 60 which fix the legs 34a, 34b to the rolling wagons 33a, 33b.SELECTED DRAWING: Figure 1

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.

  In the past, when building or building various large structures or structures such as high-rise buildings and buildings such as sports competition facilities, high-speed roads and bridges such as iron bridges, or large vessels such as tankers, passenger ships or cargo ships. In many cases, box columns constructed by combining steel thick plates are often used as column 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. The space S inside the box pillar 100, which is divided by the plurality of diaphragms 104, can be communicated by the above-mentioned scoop holes 109, which has an advantage of facilitating 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 withdraw the torch from the air gap 106 while welding to form the welding layer 107. Finally, the welding between the vertical plates 101a etc. and the diaphragm 104 is strong by the welding layer 107 formed with uniform width between the vertical plates 101a etc. (or the horizontal plate 102a etc.) 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 welding torch to enter the inside of the temporary assembly 110 (FIG. 10). reference).

  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.

  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.

  Therefore, in view of the above situation, in the drilling process of a workpiece by a gantry unit having a high center of gravity position, the present invention has as its first task to suppress the occurrence of vibration etc., and further adjust the drilling position of the drilling drill relative to the workpiece A drilling device which can be confirmed promptly, shortening of working time required for the drilling, and efficiency improvement of manufacturing of a box column is a drilling device, and a drilling method using the drilling device The challenge is to provide

  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 formed so as 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 device 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, the X-axis guide rail A pair of rail clamps that grip from the left and right and / or up and down directions, and a rail clamp control unit that drives and controls the rail clamps to the rail grip position and the rail grip release position, and the X axis guide rail A rail clamp portion that clamps and restricts the rolling of the gantry unit along the X axis, a clamp support portion that is attached to a lower portion of the leg and has an L-shaped cross section, and is attached to the clamp support portion And controlling the leg clamp and the leg clamp to the leg clamp position and the leg clamp release position A gantry drilling device, further comprising: a leg clamp control portion; and a leg clamp portion for fixing the leg to the rolling carriage.

[2] At least one of the rail clamp control unit and the leg clamp control unit controls the rail clamp and / or the leg clamp by using the hydraulic driving force of a hydraulic cylinder. Gantry type drilling device as described.

[3] The drill unit superimposes an imaging unit for imaging a workpiece image including the workpiece drilling position of the workpiece by the drilling drill and the workpiece surface around it, and a drilling position indication marker corresponding to the drilling position of the drilling drill And a work image display unit for displaying the work image, wherein the rolling control unit is imaged so that the designated perforation position and the perforation position display marker previously scored on the workpiece coincide with each other. The gantry drilling device according to [1] or [2], which controls rolling of the gantry unit and the drill unit based on a work image.

[4] The work may be temporarily welded by combining a pair of vertical plates and a pair of horizontal plates with each other, and may be a temporary assembly of square box pillars exhibiting a square cylindrical shape in any of the above [1] to [3] Gantry type drilling device as described.

[5] 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 of the drilling drill. [3] or [3] The gantry drilling device according to 4].

[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. And rolling the gate-shaped gantry unit of the gantry drilling device according to a pair of X-axis guide rails arranged along the X-axis of the mounting table, and a drill mounted on the gantry unit Proximity process of rolling the unit along the Y-axis orthogonal to the X-axis of the placing table, and moving the drilling position of the drilling drill of the drill unit to a position near the designated drilling position previously scored on the workpiece An imaging step of imaging a workpiece image including the workpiece and a workpiece surface around the workpiece; rolling of the gantry unit and the drill unit A drilling position adjusting step of controlling and adjusting the designated drilling position and a drilling position indication marker displayed superimposed on the workpiece image based on the imaged workpiece image; A rail clamp step which restricts horizontal rolling of the gantry unit along the X axis by a rail clamp portion, and a rolling carriage and a leg of the gantry unit are fixed by a leg clamp portion of the gantry drilling device. Drilling method using a gantry drilling device comprising a leg clamping step.

  According to the drilling apparatus of the present invention, by providing the rail clamp portion and the leg clamp portion with such a configuration, it is possible to increase the rigidity of the gate-shaped gantry unit at the time of drilling by the drilling drill. It can be suppressed. 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 explanatory drawing which shows schematic structure of the rail clamp part in the perforation | piercing apparatus of this embodiment. It is a partially expanded explanatory view which shows schematic structure of the gantry unit vicinity in the perforation | piercing apparatus of this embodiment. It is explanatory drawing which shows schematic structure of the leg clamp part in the perforation | piercing apparatus of this embodiment. 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 imaging part of a drill unit, and a workpiece | work surface. It is explanatory drawing which shows typically the state which the designation | designated punching position of a workpiece | work and a drilling position display marker do not correspond. It is explanatory drawing which shows typically the state to which the designation | designated punching position of a workpiece | work and the punching position display marker corresponded. 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 the embodiment of the present invention is a so-called “gantry type” drilling apparatus 1 as shown in FIGS. 1 to 8 and comprises a mounting table 10, a pair of X axis guide rails 20a, 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.

  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 (not shown) rotatably supported at the lower portions of the carriage bases 31a and 31b, and from about the approximate center of the rolling carriages 33a and 33b Between the pair of legs 34a and 34, the longitudinal direction is aligned with the pair of legs 34a and 34b vertically installed respectively and the Y axis (see FIGS. 1 and 2) orthogonal to the X axis of the mounting table 10 And a girder 35 erected on the Thereby, the gantry unit 30 has a gate-like (gate-like) configuration in a state of straddling the upper side of the mounting table 10 and the work W, as shown in the front view of the punching device 1 of FIG.

  In the perforation device 1 of the present embodiment, a Y-axis guide rail 37 disposed along the Y axis of the mounting table 10 is disposed on the girder upper surface 36 of the girder 35. In the present invention, the girder is not limited to the above-described configuration 35, 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 work image display unit 46 (a liquid crystal display or the like) for controlling the operation of the imaging unit 45 described later and displaying the imaged work image 44.

  The drill unit 40 is provided on the front side (corresponding to the right side of the drawing in FIG. 1) of the girder 35 of the gantry unit 30 described above, and is formed horizontally rollable along the Y axis of the mounting table 10 The base 41 and the drill base 41 are provided so as to be vertically movable along a Z-axis (corresponding to a depth direction from the near side of the paper surface in FIG. 1) orthogonal to the X-axis and Y-axis of the mounting table 10 And a drilling drill 42 capable of drilling the workpiece W at its tip.

  Here, the drill unit 40 mounted on the gantry unit 30 of the present embodiment can be controlled to roll along the Y axis. 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

  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, in the punching device 1 of the present embodiment, the rolling carriages 33a and 33b hold the rail holding positions of the pair of rail clamps 51 and the rail clamps 51 that hold the X axis guide rails 20a and 20b in the left and right direction and / or up and down direction. A rail clamp unit 50 having a rail clamp control unit 52 that performs drive control to a rail grip release position is 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.

  More specifically, the rail clamp portion 50 in the punching device 1 of the present embodiment is formed from the left and right sides of the X-axis guide rails 20a and 20b (corresponding to the left and right directions in FIG. 2). It has a pair of rail clamps 51 attached so as to be opposite to the side surface of the rail upper end portion 23, and is usually set to the rail grip release position. At this time, the rail clamp 51 and the rail main body 21 are not in contact with each other. 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 rail main body of the pair of rail clamps 51 of the rail clamp unit 50 according to the clamp direction C (see the arrow direction in FIG. 2) Driving control is performed so that the upper end portion 23 of the rail 21 is sandwiched from the left and right direction, and is displaced to the rail gripping position. Here, the rail clamp control unit 52 for displacing to the rail gripping position is configured to include a hydraulic cylinder in the drilling device 1 of the present embodiment. Therefore, the rail clamp 51 is moved to the rail gripping position using the hydraulic driving force of the hydraulic cylinder. As a result, the rail clamp 51 comes in contact with the side surface 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 heavy weight drill unit 40 is attached to one gantry unit 30, and the drill unit 40 can roll along the Y axis. Therefore, the gravity center 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, by employing the rail clamp unit 50, the gantry unit 30 and the X-axis guide rails 20a and 20b can be firmly fixed at the time of drilling, and the fine movement or vibration of the gantry unit 30 in the X-axis direction Swinging of the gantry unit 30 can be prevented. 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 FIGS. 3 and 4, the drilling device 1 of the present embodiment is provided at the lower part of the leg and has a clamp support portion 61 having an L-shaped cross section and a leg provided at the clamp support portion 61. A leg clamp unit 60 is provided having a clamp 62 and a leg clamp control unit 63 which drives and controls the leg clamp 62 in the vertical direction between the leg clamp position and the leg clamp release position.

  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. The gantry unit 30 having a pair of legs 34a and 34b and a girder 35 and formed in a gate shape repeats rolling along the X axis in accordance with the X axis guide rails 20a and 20b, whereby the X axis guide rail 20a, It may be slightly deformed due to wear or the like of the rolling carriages 33a and 33b in contact with 20b.

  Furthermore, in the drilling unit 1 of the present embodiment, the imaging unit 45 for imaging the workpiece image 44 including the drilling position DP of the workpiece W by the drilling drill 42 and the workpiece surface 47 around it in the drilling unit 40; A workpiece image display unit 46 is provided which directly superimposes a perforation position display marker DM corresponding to the perforation position DP and displays a workpiece image 44. Here, as the work image display unit 46, a known liquid crystal display or the like can be used. Furthermore, the imaging unit 45 can use an existing CCD camera or the like. In addition, the punching position display marker DM is displayed at a substantially central position of the work image display unit 46.

  With the above configuration, the workpiece image 44 including the periphery of the imaged workpiece surface 47 is superimposed on the designated perforation position SP and the workpiece image 44 previously scored on the workpiece W while being confirmed by the workpiece image display unit 46 The rolling control unit is controlled to control the rolling of the gantry unit 30 and the drill unit 40 so that the drilling position display marker DM displayed together is matched.

  More specifically, when the deviation between the designated drilling position SP and the drilling position display marker DM is confirmed by the work image display unit 46, the rolling control unit controls the gantry unit 30 and the drill unit 40, and the drilling drill 42 The rolling control is performed along the X-axis and / or the Y-axis such that the tip of the (the drilling position DP) coincides with the intersection point indicated by the designated drilling position SP. At this time, the worker visually recognizes the deviation on the work image display unit 46 (liquid crystal display), operates the rolling control unit, and moves the gantry unit 30 and the drill unit 40 by an appropriate amount according to the deviation. Roll (see Figure 6). 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 imaging unit 45 can use a known CCD camera or the like capable of shooting a moving image.

  In the punching apparatus 1 of the present embodiment, the designated punching position SP to be marked on the work W is indicated by “X-like” or “+ -like” in which two straight lines intersect with each other. The perforation position display marker DM to be displayed is similarly set to be "X-shaped" or "+ -shaped". In the perforation device 1 of the present embodiment, the designated perforation position SP and the perforation position DP (the perforation position indication marker DM are in a state where the intersections of the designated perforation position SP and the perforation position indication marker DM where two straight lines intersect with each other coincide. It is judged that) matches.

  The punching device 1 of the present embodiment is capable of so-called numerical control (NC control). Therefore, by setting some of the above-mentioned designated drilling positions SP scored on the above-mentioned work W as reference points, and registering the alignment operation of the designated drilling positions SP and the drilling positions DP of the drilling drill 42 For the other specified drilling positions SP, the X axis and Y axis of the gantry unit 30 and the drilling unit 40 are controlled to roll by the preprogrammed numerical control, and the drilling drill 42 which has reached the drilling position DP is Z axis Directionally controlled, drilling can be performed by the drilling drill 42 at a desired drilling depth.

  In this case, when drilling is performed, the operator performs an operation of confirming by the work image display unit 46 whether drilling is performed at the correct position. In such a confirmation operation, when a deviation is recognized between the drilling position DP of the drilling drill 42 and the designated drilling position SP of the workpiece W, the operator interrupts the above numerical control, and the gantry unit 30 and the drill unit 40 are manually operated. It is also possible to control the rolling of etc. By using both numerical control (NC control) and manual rolling control, the accuracy and accuracy of the drilling for the workpiece W can be improved, and the drilling can be completed in a shorter working time. That is, the working time can be shortened, the manufacturing efficiency can be improved, and the productivity of the box pillar as the final product can be enhanced.

  The gate-shaped gantry unit 30 mounted on the X-axis guide rails 20a and 20b and supported by the drilling apparatus 1 of the above configuration, which has a configuration related to the rail clamp unit 50 and the leg clamp unit 60 as compared with the prior art. Swinging and the like can be suppressed, and stability at the time of drilling can be enhanced. As a result, the processing accuracy of the drilling can be enhanced.

  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, fine adjustment work 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.

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 workpiece W, the imaging unit 45 includes the workpiece W and the workpiece surface 47 around the workpiece W—the workpiece image 44 is imaged (imaging step). The picked up work image 44 is displayed by the work image display unit 46, and the operator can confirm the work image 44 from a position away from the drilling position DP or the like. Here, a “+” drilling position display marker DM indicating the position (drilling position DP) of the tip of the drilling drill 42 is displayed on the workpiece image display unit 46 so as to overlap the workpiece image 44.

  Thereafter, the operator controls the rolling of the gantry unit and the drill unit while checking the workpiece image 44 obtained by the imaging process and the drilling position display marker DM displayed in an overlapping manner, and the designated drilling position SP and the drilling Adjust so that the position indication marker DM (= punching position DP) matches (punching position adjustment step). In the drilling method of the present embodiment, as shown in FIG. 5 and FIG. 6 as already shown, with respect to the designated “+” designated drilling position SP, the respective intersections of “+” drilling position indication markers DM are similarly Are rolled so as to coincide with each other, and the drilling position DP is adjusted by the drilling drill 42.

  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 A rail clamp process is performed to restrict the movement of the Furthermore, the leg clamp process which fixes between rolling truck | car 33a, 33b and leg 34a, 34b using the leg clamp part 60 is implemented. Thereby, the rolling of the gantry unit 30 is restricted, and the legs 34a and 34b and the rolling carriages 33a and 33b constituting the gantry unit 30 are firmly connected. Furthermore, while pressing the girder 35 from the upper side by the above-mentioned rail clamp process, the side clamp mechanism (not shown) which holds the girder 35 from the side of the girder 35 using a cylinder etc. As a method of fixing at the same time, a “wedge” may be inserted from the side of the girder 35 by using a cylinder or the like, and a mechanism may be provided to prevent floating and lateral movement (displacement) of the girder 35. Absent.

  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: Punching device 10: Mounting table 11: Table upper surface 20a, 20b: X-axis guide rail 21: Rail main body 22: Rail fixing portion 23: Rail upper end portion 30: Gantry unit 31a, 31b A truck base 33a, 33b: a rolling truck, 34a, 34b: legs 35: girder 36: girder top surface 37: Y-axis guide rail 40: drill unit 41: drill base 42: drilling drill 44 A workpiece image 45: an imaging unit 46: a workpiece image display unit 47: a workpiece surface 50: a rail clamp unit 51: a rail clamp 52: a rail clamp control unit 60: a leg clamp unit 61: a clamp support unit , 62: leg clamp 63: leg clamp controller 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, DM: perforation position indication marker, DP: perforation position, G: installation surface, H: hole, S: space, SP: designated perforation 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: the gantry unit; and a rolling control unit configured to control rolling of the drill base of the drill unit,
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 A rail clamp portion that clamps the X-axis guide rail and regulates rolling of the gantry unit along the X-axis;
A clamp support having an L-shaped cross section, a leg clamp mounted on the clamp support, and a leg clamp for driving and controlling the leg clamp to a leg clamp position and a leg clamp release position. The gantry drilling device further comprising: a control unit, and a leg clamp unit for fixing the leg to the rolling carriage. At least one of the rail clamp control unit and the leg clamp control unit is
The gantry drilling device according to claim 1, wherein the rail clamp and / or the leg clamp is driven and controlled using a hydraulic driving force of a hydraulic cylinder. The drill unit is
An imaging unit configured to image a workpiece image including a drilling position of the workpiece by the drilling drill and a workpiece surface around the drilling position;
And a workpiece image display unit for superimposing a drilling position display marker corresponding to a drilling position of the drilling drill and displaying the workpiece image;
The rolling control unit is
The rolling of the gantry unit and the drill unit is controlled based on the imaged workpiece image so that the designated perforation position and the perforation position indication marker previously scored on the workpiece coincide with each other. The gantry drilling device according to 2. The work is
The gantry-type drilling device according to any one of claims 1 to 3, 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 claim 3 or 4, wherein the gantry unit and the drill unit are rolled by means of preprogrammed numerical control for alignment of the designated drilling position and the drilling position of the drilling drill. 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 unit of the gantry drilling device is rolled according to a pair of X axis guide rails arranged along the X axis of the mounting table, and the drill unit mounted on the gantry unit is described above A proximity step of rolling along a Y-axis orthogonal to the X-axis of the placement table to move a drilling position of a drilling drill of the drill unit to a position near a designated drilling position previously scored on the workpiece;
An imaging step of imaging a workpiece image including the workpiece and a workpiece surface around the workpiece;
Control the rolling of the gantry unit and the drill unit, and adjust the drilling based on the imaged workpiece image so that the designated drilling position and the drilling position display marker displayed superimposed on the workpiece image coincide with each other Position adjustment process,
A rail clamp step of restricting horizontal rolling of the gantry unit along the X axis by a rail clamp portion of the gantry drilling device;
A drilling method using a gantry type drilling device, comprising: a leg clamping step of fixing a rolling carriage and a leg of the gantry unit by a leg clamp portion of the gantry type drilling device.

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