JP2008238319A - Bracing device of punching tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bracing device of a punching tool applicable to core drills having various kinds of diameters. <P>SOLUTION: This bracing device is constituted of a device substrate 1 provided with a center through-hole 10 to insert the core drill 100 and a mounting member 3 connected to the device substrate 1. In the device substrate 1, three drill receiving materials 2 abutting on an outer peripheral surface of the core drill 100 are provided so that the mounting positions may be varied at a peripheral edge part of the center through-hole 10. The mounting member 3 is provided with a mounting frame body 30 mounted on a guide rod provided in a drill stand and has a mounting plate material 31 provided so that the mounting position may be varied in relation to the device substrate 1. Each of the drill receiving materials 2 is provided with a rotary wheel 20. A height adjusting bolt 12 having a distal end abutting on the surface of a concrete skeleton is provided in an intermediate part at the mounting position of the drill receiving material 2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a rocking device for a drilling tool, and more particularly to a rocking device for a drilling tool suitable for drilling a deep hole in a concrete frame or the like.

  For example, in a drilling operation in which a deep hole is to be drilled in a concrete skeleton, a vertical hole cannot be drilled due to tool tip runout (or a phenomenon called “shake”) during the operation to use a long drilling tool. There is. In addition, when drilling in a concrete frame, if the tool tip comes into contact with the aggregate, the tool tip tends to advance to a direction with less aggregate and no resistance, and in this case also, a vertical hole cannot be drilled. .

The following patent document describes an apparatus that enables drilling of a vertical deep hole by preventing the tool tip from swinging when the drilling tool is long.
JP 2000-238033 A JP 2002-370223 A JP 2003-266222 A

  In the invention described in Patent Document 1, as shown in FIGS. 1 and 3, a hollow drill shaft 15 having a core bit 14 (reference numeral of the publication, hereinafter the same) at a tip portion is applied to a concrete surface 20 to be drilled. The guide frame 2 is inserted into the fixed gantry 1, and an anti-blur 18 as an anti-vibration means is attached to the through hole for the drill shaft 15 opened in the gantry 1.

  In the invention described in Patent Document 2, as shown in FIGS. 1 and 2, the support jig 20 that positions the tip of the core bit 11 at the drilling position and the core bit 11 are rotated to the inner peripheral side of the insertion hole 21. It has a jig body 23 provided with a support portion 22 that supports it, and the support portion 22 has an anti-vibration effect.

  In addition, in the invention described in Patent Document 3, a guide cylinder 2 having a diameter larger than the diameter of the drill cutter 12 is provided on the gantry 3, and the guide cylinder 3 has an anti-vibration effect.

  In Patent Documents 1 to 3, any of the outer diameters of the core drills (corresponding to the hollow drill shaft 15 of Patent Document 1, the core bit 11 of Patent Document 2, and the drill cutter 12 of Patent Document 3) is changed. It is necessary to replace the stop member with one that matches the diameter of each core drill. For this reason, there is a problem that work efficiency deteriorates when drilling operations with different hole diameters are continuously performed. Further, if the gap between the core drill and the bracing member is reduced as much as possible to increase the bracing effect, there is a problem that frictional heat is generated between the two and the core drill may be disturbed. In addition, the above-described conventional inventions are not applicable to other models because the anti-rest structure is a dedicated member, and thus cannot be used for a commercially available drill stand and lack general versatility. It was.

  The problem to be solved by the present invention is not only to be applied to core drills of various diameters, but also to provide a rocking device for a drilling tool that can be applied to a commercially available drill stand.

  The first of the solving means is a device substrate, a plurality of drill receiving members that contact the outer peripheral surface of the core drill inserted through the center through hole at the peripheral portion of the center through hole provided in the device substrate, and the device substrate. The drill receiving material is provided with a mounting position variably toward the center of the center through hole, and the mounting member is attached to a guide rod included in a drill stand and the above-described mounting frame. A mounting plate having a mounting position that is variable with respect to the apparatus substrate, and the drill receiving material has a bolt shaft and a nut member, and a rotating wheel is mounted on the bolt shaft via a bearing. The bolt shaft is provided so as to be rotatable, and is screwed to a nut member that is movably provided in a nut housing hole having a long hole structure extending toward the center of the center through hole provided in the device substrate. It is an.

  The second of the means for solving is characterized in that the drill receiving material is provided at the peripheral edge portion of the center through hole of the apparatus substrate at a phase angle of 120 degrees.

  The third of the solving means is the first or second of the solving means, wherein the drill receiving material is a bolt shaft provided with a rotatable rotating ring, a square head having a square front portion and the square head. And a nut member having an integral threaded cylinder, and provided with a long hole structure nut storage hole extending toward the center of the center through hole in the device substrate, the nut storage hole being perpendicular to the longitudinal direction The back side of the apparatus substrate is used as a back hole, and the front side is formed as a surface hole formed with a narrower width in the longitudinal direction than the back hole. The member has a front rectangular head and a screw cylinder integrally formed with the square head, and the screw cylinder is inserted from the back hole toward the surface hole, Engage the square head with the back hole and store it in the nut storage hole in a non-rotatable manner. Axis is characterized in that is screwed to the threaded cylindrical body via the rotating ring and collar.

  According to a fourth aspect of the solution means, in the first of the solution means, the attachment member has an attachment frame body attached to a guide rod provided in the drill stand, and attachment plate members provided on both sides of the attachment frame body. The frame has a U-shaped cross section, and a cover plate is inserted into an embedded bolt provided on the mounting frame on the bottom open surface and tightened with a nut, and the mounting member is a length formed on the device substrate. It is characterized in that the mounting position is variably mounted on the apparatus substrate by a mounting bolt through the hole.

  The fifth of the solving means is the fourth of the solving means, wherein the attachment members are the attachment plate members provided on both sides of the attachment frame body, and the attachment bolts are inserted into the respective holes of the plurality of long holes formed in the apparatus substrate. Thus, the attachment position is variably attached to the apparatus substrate.

  Sixth of the solving means, in any one of the first to fifth of the solving means, the height adjustment bolt is provided at a position where the apparatus substrate is an intermediate portion of the attachment position of the drill receiving material at the peripheral portion of the center through hole. The height adjusting bolt can be adjusted in length protruding from the apparatus substrate, and is in contact with the surface of the concrete frame to be drilled with a core drill.

  Since the core drill is inserted into the center through hole provided in the apparatus substrate and the rotating rings of the plurality of drill receiving members are brought into contact with the outer peripheral surface of the core drill, the core drill is used to perform the drilling operation. When rotating, the rotating wheel will rotate with the drill and support the drill, so even if the drill tip hits hard aggregate, the drill tip will not shake and remove the aggregate, For this reason, the drill has the effect of being able to drill in the vertical direction without changing the drilling direction. Further, since the mounting position of the drill receiving material is variable, there is an effect that when the drill diameter is changed, the mounting position can be changed to correspond to a new drill.

  Further, according to the first aspect of the present invention, since the drill receiving material has a rotating ring, and the rotating ring can be firmly supported on the core drill without a gap, even if the hole to be drilled is a deep hole, the deflection of the drill tip can be prevented. There is an effect that can be prevented.

  According to the second aspect of the present invention, since the outer peripheral surface of the core drill is supported by supporting the rotating ring of the drill receiving material at three points, there is an effect that the core drill can be firmly supported without rattling.

  According to a third aspect of the present invention, a bolt shaft on which a rotating ring of a drill receiving member is mounted is screw-coupled to a screw cylinder integrally formed with the square head, and a nut member including the square head and the screw cylinder is provided. Since the mounting position is variably engaged with the nut housing hole provided in the apparatus substrate, there is an effect that the mounting position can be selected according to the outer diameter of the core drill.

  According to a fourth aspect of the present invention, the mounting member for mounting the apparatus on the drill stand has a mounting frame body mounted on a guide rod provided in the drill stand, and mounting plate members on both sides of the mounting frame body. Since the mounting position is variably mounted on the substrate, it has an effect that it can be used corresponding to a drill stand of a type in which the distance between the core drill and the guide rod is different.

  According to the fifth aspect of the present invention, the mounting plate member of the mounting member is attached through a plurality of long holes provided in the apparatus substrate, and the mounting plate member is composed of at least two mounting bolts on one side and at most four mounting bolts on one side. Since it can be fixed to the apparatus substrate, there is no possibility that the coupling position of the apparatus substrate and the mounting member is shifted due to vibration during the drilling operation of the core drill, and there is an effect that a stable drilling operation can be performed.

  Since a plurality of height adjustment bolts for supporting the apparatus substrate are provided on the apparatus substrate, stable operation can be achieved by abutting the tip of the height adjustment bolt against the surface of the concrete frame. Drilling work can be performed.

  1 is an assembled perspective view, FIG. 2 is a component diagram of the apparatus, FIG. 3 is a front view of the whole, FIG. 4 is a rear view, FIG. 5 is a side view, and FIG. FIGS. 7 and 7 show the detailed structure of the drill receiving material, where a is a cross-sectional view, b is a front view of the nut receiving hole as seen from the back of the apparatus substrate, c is a component diagram, and FIG. 8 is the use of the apparatus of the present invention. It is a perspective view which shows a state.

  In these drawings, the apparatus substrate 1 is provided with a center through hole 10 having an inner diameter through which a core drill can be inserted, and a peripheral edge of the center through hole 10 is in contact with the outer peripheral surface of the core drill inserted through the center through hole 10. A plurality of drill receiving members 2 are provided. Here, the drill receiving material 2 is provided at the peripheral portion of the center through hole 10 at a phase angle of 120 degrees, and supports the outer peripheral surface of the core drill at three points. The drill receiving member 2 has a rotatable rotating wheel 20 and is provided so as to be able to advance and retreat toward the center of the center through hole 10 as will be described later.

  The apparatus substrate 1 is provided with a mounting member 3 for mounting the anti-skid device according to the present invention to a drilling tool. The attachment member 3 has an attachment frame body 30 to be attached to a guide housing provided in the drill stand at the center, and attachment plate members 31 provided on both sides of the attachment frame body 30, and is formed on the apparatus substrate 1. The mounting board 32 is connected to the apparatus substrate 1 by the mounting bolt 32 and the nut 33 through the mounting long hole 11. In the embodiment, the mounting elongated holes 11 are provided at two symmetrical positions and in parallel in the vertical direction, and the first mounting bolts 32 provided on the mounting plate 31 are inserted through the first mounting holes 11. Two bolt holes 34 are provided at positions corresponding to the mounting elongated holes 11. The nut 33 is provided with a washer.

  The mounting frame 30 is open at the bottom so as to have a U-shaped cross section, and the open portion is closed by the lid plate 35. Here, the lid plate 35 is inserted by inserting the second bolt holes 36 provided on both side edges into the embedded bolts 37 provided on both sides of the mounting frame 30 and tightening the nuts 38 to be used via washers. It is connected to the frame body 30.

  A height adjusting bolt 12 is provided on the apparatus substrate 1 so as to be able to advance and retreat between drill receiving members 2 provided at the peripheral edge of the center through hole 10. The height adjustment bolts 12 are provided at the peripheral edge portion of the center through hole 10 at a phase angle of 120 degrees, similarly to the drill receiving material 2, and include three drill receiving materials 2 and three height adjusting bolts. 12 are alternately provided on the same circumference. Here, the height adjusting bolt 12 can be adjusted in length protruding from the back surface of the apparatus substrate 1 and performs a drilling operation by abutting the front end of the bolt with a surface of a concrete frame drilled by a core drill. It is. Further, the height adjusting bolt 12 can attach a dust collecting pad for collecting chips to a portion protruding from the apparatus substrate 1.

  In particular, referring to FIG. 7, the drill receiving member 2 has a bolt shaft 21, and a rotating wheel 20 is rotatably attached to the bolt shaft 21 via a bearing 22. In the figure, 23 is a collar provided before and after the rotating wheel 20, and 24 is a nut member 24 that is screwed to the tip of the bolt shaft 21. The nut member 24 has a square head 25 whose head portion is a front square, and a screw cylinder 26 integrally formed with the square head 25. Further, the device substrate 1 is provided with a nut accommodation hole 13 extending toward the center of the center through hole 10 at a phase angle of 120 degrees, and the nut member 24 is slidable in the nut accommodation hole 13. It is to be attached.

  The nut housing hole 13 has a long hole structure, and a cross section in a direction perpendicular to the longitudinal direction is formed in the middle of the hole in a stepped portion, and the back side of the device substrate 1 is formed in the back hole portion 14. The surface hole 15 is formed on the side, the width of the surface hole 15 is narrower than that of the back hole 14, and the square head 25 cannot be rotated in the back hole 14, but the hole The screw cylinder 26 is accommodated in the surface hole 15 so as to be movable along the groove. The bolt shaft 21 is provided with a hexagonal tool hole that rotates by inserting a hexagon wrench into the bolt head 27.

  Here, in order to assemble the drill receiving member 2, the screw cylinder 26 of the nut member 24 is inserted from the back hole 14 toward the surface hole 15, and the square head 25 is engaged with the back hole 14. The nut member 24 is accommodated in the nut accommodation hole 13 so as not to rotate. Here, the collar 23, the rotating wheel 20, and the collar 23 are attached to the bolt shaft 21 in this order, and the screw portion of the bolt shaft 21 is screwed to the screw cylinder 26 (FIG. 7a). In the embodiment, since three drill receiving members 2 are provided at the peripheral edge portion of the center through hole 10 of the apparatus substrate 1, the rotating wheel 20 of the drill receiving member 2 is exposed in the center through hole 10 to surround the core drill. The face part is supported at three points.

  Next, with reference to FIG. 8, the usage aspect of this apparatus is demonstrated. The core drill 100 is coupled to the drive motor 101. The drill stand 102 includes a pedestal 103 and a guide rod 104, and a drill base 105 that can move along the guide rod 104. The drive motor 101 is mounted on the drill base 105. The drill stand 102 is fixed to the concrete frame 110 to perform a drilling operation, and the drilling direction of the core drill is not limited to the horizontal direction toward the vertical wall surface as shown in the figure, but also on the horizontal floor or ceiling. It can be used in any case in the vertical direction.

  When this apparatus is used for a drill stand 102 of a type in which the distance between the guide rod 104 and the core drill 100 is different, the mounting position of the mounting plate 31 coupled to the apparatus substrate 1 is changed, and the core drill 100 (center through hole 10) and The relative position of the mounting frame 30 is changed and adjusted. That is, the mounting bolt 32 is loosened, the mounting bolt 32 is moved along the mounting elongated hole 11 of the apparatus substrate 1, and the mounting bolt 32 and the mounting bolt 32 are set to a position where the mounting frame 30 can be mounted on the guide rod 104. The mounting member 3 is positioned by tightening the nut 33.

  In order to perform a drilling operation on a concrete frame using this apparatus, first, a drill stand 102 is installed on the concrete frame 110. Next, the cover plate 35 of the mounting member 3 is removed and the mounting frame 30 is fitted to the guide rod 104 of the drill stand 102, and the cover plate 35 is brought into contact with the bottom of the mounting frame 30 and from the second bolt hole 36. The embedded bolt 37 is protruded, and a nut 38 is fastened to the protruded embedded bolt 37 to fix the mounting member 3 to the guide rod 104. At this time, the tip of the height adjusting bolt 12 is brought into contact with the surface of the concrete frame, and the apparatus substrate 1 is installed in a direction parallel to the surface of the frame.

  The core drill 100 installs the device substrate 1 on the surface of the concrete frame, and then inserts the device substrate 1 into the center through hole 10 so that the rotating wheel 20 of the drill receiving member 2 contacts the outer peripheral surface of the drill. In addition, the drilling operation by the core drill 100 is performed by the same method as the conventional method. In addition, the height adjustment bolt 12 protruded from the apparatus substrate 1 can be attached with a dust absorbing pad for collecting the chips.

  Since the core drill 100 is in contact with the rotating wheel 20 of the drill receiving material 2 on the outer peripheral surface, when the core drill 100 is rotated to perform a drilling operation, the rotating wheel 20 rotates with the drill to support the drill. For this reason, even if the tip of the drill hits a hard aggregate, it is possible to drill in the vertical direction without changing the drilling direction by exhibiting a steadying effect. Further, when the diameter of the core drill that performs the drilling operation is changed, the bolt shaft 21 of the drill receiving material 2 is loosened and retracted from the core drill 100 along the hole groove of the nut accommodation hole 13 and then inserted into the center through hole 10. The rotating wheel 20 is brought into contact with the outer peripheral surface of the new core drill, and the bolt shaft 21 is tightened again to position the drill receiving member 2.

  Since the rotating device included in the drill receiving member 2 is in contact with the outer peripheral surface of the core drill by the three-point support, the bracing device of the present invention is firmly attached to the outer peripheral surface of the core drill without rattling. Since it can be supported, even if the hole to be drilled is a deep hole, the drill tip can be prevented from swinging and a vertical hole can be drilled. Moreover, since the anti-vibration apparatus of this invention can be applied to a commercially available drill stand, it has versatility.

The perspective view of the whole which assembled this invention apparatus. Part drawing of the device. The front view of the whole apparatus. The rear view of the whole apparatus. The side view of the whole apparatus. AA sectional drawing in FIG. The detailed structure of a drill receiving material is shown, a is sectional drawing, b is the front view which looked at the nut accommodation hole from the back of an apparatus board | substrate, c is component drawing. The perspective view which shows the use condition of this invention apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Device board | substrate 10 Center through-hole 11 Mounting long hole 12 Height adjustment bolt 13 Nut accommodation hole 14 Back surface hole part 15 Surface hole part 2 Drill receiving material 20 Rotating wheel 21 Bolt shaft 22 Bearing 23 Collar 24 Nut member 25 Square head 26 Screw cylinder 27 Bolt head 3 Mounting member 30 Mounting frame 31 Mounting plate material 32 Mounting bolt 33 Nut 34 First bolt hole 35 Cover plate 36 Second bolt hole 37 Embedded bolt 38 Nut 100 Core drill 101 Drive motor 102 Drill Stand 103 Base 104 Guide rod 105 Drill mounting table 110 Concrete frame

Claims (6)

  A device substrate (1), a plurality of drill receiving members (2) that contact the outer peripheral surface of a core drill inserted through the center through hole at the peripheral portion of the center through hole provided in the device substrate, and the device substrate The drill receiving member is provided with a variable mounting position toward the center of the center through hole, and the mounting member is attached to a guide rod provided in the drill stand. (30) and a mounting plate member (31) whose mounting position is variably provided with respect to the apparatus substrate, and the drill receiving member has a bolt shaft (21) and a nut member (24). A rotating wheel (20) is rotatably provided on the bolt shaft via a bearing, and the bolt shaft extends to the center of the center through-hole provided on the device substrate. 13) Rotatably the vibration stopping device of the drilling tool, characterized in that the screw coupled to the nut member (24) provided.   2. The drill tool according to claim 1, wherein the drill receiving material (2) is provided at a peripheral angle of the center through hole (10) of the apparatus substrate (1) at a phase angle of 120 degrees. apparatus.   The drill receiving member (2) has a bolt shaft (21) provided with a rotatable rotating wheel (20), a square head (25) whose head portion is a front square, and an integrated structure with the square head. A nut member (24) having a screw cylinder (26), and provided with a nut housing hole (13) having a long hole structure extending toward the center of the center through hole (10) in the device substrate (1), The housing hole is formed in a step-shaped section in a direction perpendicular to the longitudinal direction so that the back side of the device substrate (1) is a back hole (14) and the front side is longer than the back side hole. The surface hole portion (15) is formed with a narrow width, and the nut member has a front rectangular head portion (25) and a screw cylinder (26) integrally formed with the square head portion. The screw cylinder is inserted from the back hole toward the surface hole, and the square head is inserted into the back hole. The said bolt axis | shaft is screw-coupled to the said screw cylinder via the said rotating wheel and a collar | collar, and it engages with a nut, and it accommodates in the said nut accommodation hole so that rotation is impossible. Anti-drilling device for drilling tools.   The attachment member (3) has an attachment frame body (30) to be attached to a guide rod provided in the drill stand, and attachment plate members (31) provided on both sides of the attachment frame body. It has a U-shape, and a cover plate (35) is inserted into an embedding bolt provided on the mounting frame body and tightened with a nut on the bottom open surface, and the mounting member is formed on the device substrate (1). 2. The boring tool bracing device according to claim 1, wherein the mounting position is variably mounted on the apparatus substrate by means of mounting bolts (32) through the elongated holes (11).   The attachment member (3) includes attachment plate members (31) provided on both sides of the attachment frame (30), and attachment bolts (31) formed in the plurality of elongated holes (11) formed in the device substrate (1). The drilling device for a drilling tool according to claim 4, wherein the mounting position is variably attached to the apparatus substrate by being inserted into the apparatus substrate.   The device substrate (1) is provided with a height adjustment bolt (12) at a position which is an intermediate portion of the attachment position of the drill receiving material (2) at the peripheral portion of the center through hole (10). The boring tool according to any one of claims 1 to 5, wherein a length of the bolt protruding from the apparatus substrate is adjustable, and a tip end portion of the bolt is brought into contact with a surface of a concrete frame to be drilled with a core drill. Anti-sway device.

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