JP2004082250A - Boring tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To correctly grasp the number of holes formed by using a boring tool. <P>SOLUTION: The number of times of movement of a cover member 5 moving in the axial direction of a drill bit D is counted by a numerical value counter 3, in interlocking with the operation for forming the holes H on an object T by a drill bid D of this boring tool 100, and displayed on a display part 3b. As the number of bored holes H is automatically displayed on the numerical value counter 3 based on the number of times of the movement of the cover member 5 accompanying the boring motion, the number of holes H can be correctly grasped simultaneously with the boring motion. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a drilling tool that counts the number of perforations made in an object and displays the counted number of perforations so that the number of perforations made in the object can be quickly and accurately confirmed. .
[0002]
[Prior art]
2. Description of the Related Art Conventionally, when assembling an aircraft or the like, in order to provide a hole for a rivet, a hole is designated at a designated hole position in an assembly member using a drilling tool corresponding to the designated hole size. Then, in order to confirm that a predetermined number of perforations have been made, the operator has counted the number of perforations made in the assembly member for each hole size while visually checking the hole size.
[0003]
[Problems to be solved by the invention]
However, in the method in which the worker visually counts the number of perforations, when the number of perforations performed is countless, the number of workers may be incorrectly counted. In particular, when a plurality of hole sizes are difficult to be distinguished from each other, a wrong counting of the wrong hole sizes may occur due to a misrecognition of the hole sizes.
[0004]
An object of the present invention is to provide a drilling tool capable of accurately grasping the number of drillings performed by the drilling tool.
[0005]
[Means for Solving the Problems]
In order to solve the above problem, an invention according to claim 1 is a drilling tool for drilling an object by using a drill bit, and a counter for detecting an operation of drilling an object by the drill bit and increasing the display number. It is characterized by having.
[0006]
According to the first aspect of the present invention, the drilling tool detects an operation of piercing the object by the piercing bit provided in the drilling tool, and for example, the piercing bit has moved a predetermined distance from the reference point of the object. Since a counter that increases the number of displays is detected by detecting that, the number of perforated holes can be automatically displayed on the counter in conjunction with the perforating operation, and the number of perforated holes can be displayed simultaneously with the perforating operation. It becomes possible to grasp accurately.
[0007]
The invention according to claim 2 is a drilling tool for drilling an object with a drill bit, wherein the cover member moves in the axial direction of the drill bit in conjunction with an operation of drilling the object with the drill bit, A counter for counting and displaying the number of movements of the cover member.
[0008]
According to the second aspect of the present invention, the drilling tool counts the number of movements of the cover member that moves in the axial direction of the drilling bit in conjunction with the operation of drilling the target with the drilling bit provided in the drilling tool. The counter that displays the number of perforations can be automatically displayed on the counter based on the number of movements of the cover member accompanying the perforation operation, and the number of perforations can be accurately determined simultaneously with the perforation operation. It becomes possible to grasp.
[0009]
The invention according to claim 3 is the drilling device according to claim 2, wherein the cover member is held by a fixing member fixed to a main body of the drilling tool so as to be movable in the axial direction of the drilling bit. A connecting rod which is integrally fixed to the cover member and presses a counter switch provided on the counter, and a distal end through which the drill bit enters and exits, and which is attached to the distal end by biasing means. It is characterized by being energized.
[0010]
According to the third aspect of the invention, it is needless to say that the same effect as the second aspect of the invention is obtained. In particular, the cover member is provided with a fixing member fixed to the drilling tool main body. A connecting rod that is held movably in the axial direction and is urged toward the distal end by an urging means, is integrally fixed to the cover member, and presses a counter switch provided on the counter. The counter can more reliably count the number of times the cover member moves in the axial direction of the drill bit during the drilling operation.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a side view showing a drilling tool of the present invention, and FIG. 2 is a plan view of the drilling tool. FIG. 3 is a side view of the drilling tool in which a drilling tool main body and a moving unit are separated. As is clear from these figures, the drilling tool of the present application is a portable drilling tool that performs drilling by hand.
As shown in FIGS. 1 to 3, the drilling tool 100 includes a drilling tool main body 10 provided with a rotating shaft 2 that supports the chuck 1, and a cover that is attached to the drilling tool main body 10 and covers the periphery of the chuck 1. A moving unit 20 provided with the member 5, a numerical counter 3 fixed to the upper surface of the drilling tool main body 10, and the like are provided.
[0012]
A rotary drive mechanism (not shown) connected to the rotary shaft 2 is provided inside the drilling tool main body 10, and the rotary shaft 2 is driven to rotate by the rotary drive mechanism (not shown). The chuck 1 supported by the rotation shaft 2 is driven to rotate via the rotation shaft 2.
The chuck 1 is configured so that various drill bits can be attached and detached, and the drill bit according to the size of the drill and the application is attached to the chuck 1 and held.
[0013]
The moving unit 20 includes a fixing unit 4, which is a fixing member fixed to the drilling tool main body 10, a cover member 5 attached to the drilling tool main body 10 via the fixing unit 4, and covering the periphery of the chuck 1, and a cover member 5. , Which are urging means for elastically urging the front end side of the drill bit held by the chuck 1, and the like.
As shown in FIG. 4, the fixing portion 4 includes an upper fixing member 4b and a lower fixing member 4c connected via a hinge 4a, and fixing bolts 4d for connecting and fixing the upper fixing member 4b and the lower fixing member 4c. And so on. The fixing portion 4 is configured such that an upper fixing member 4b and a lower fixing member 4c attached to a predetermined position of a cylindrical portion 10a supporting the rotating shaft 2 in the drilling tool main body 10 are tightened and connected by fixing bolts 4d. Thereby, the cylindrical portion 10a is fixed so as to grip the outer periphery thereof. Then, the cover member 5 provided on the fixing portion 4 is attached to the drilling tool main body 10 so as to cover the periphery of the drilling bit held by the chuck 1.
The upper fixing member 4b and the lower fixing member 4c have a plurality of through holes 4e penetrating therethrough in the direction of the rotation axis.
[0014]
The cover member 5 includes a plurality of rod members 5a, which penetrate a plurality of through holes 4e formed in the upper fixing member 4b and the lower fixing member 4c of the fixing portion 4, and a plurality of rod members 5a,. Ring member 5b, second ring member 5c, and head ring member 5e provided on second ring member 5c and having opening 5d as a tip end through which a drill bit enters and exits. And a connecting rod 5f which is integrally formed extending from the base end of a predetermined rod member 5a and abuts on a counter switch 3a of the numerical value counter 3, which will be described later, or is arranged to face a predetermined distance away. . Further, the base ends of the other rod members 5a are made larger in diameter or bent than the through holes 4e, so that movement toward the drill bit side (tip side) is prevented.
[0015]
In the moving part 20, one end of the coil spring 6 is connected to the first ring member 5b of the cover member 5, and the other end of the coil spring 6 is connected to the fixed part 4. When a leftward force is applied to the head ring member 5e of the cover member 5 in the figure, the cover member 5 moves to the left side in the figure and to the fixed portion 4 while contracting the coil springs 6. When the action of this force is interrupted, the cover members 5 move rightward in the drawing and return to the original positions by the action of the coil springs 6. As described above, the cover member 5 is elastically supported by the fixed portion 4 via the coil spring 6.
[0016]
The numerical counter 3 includes a counter switch 3a for inputting the number of counts, a display unit 3b for displaying the number of counts input via the counter switch 3a, and a reset switch for resetting the number of counts displayed on the display unit 3b. 3c and the like.
The connecting rod 5f of the cover member 5 is in contact with the counter switch 3a, and in conjunction with the movement of the cover member 5, when the connecting rod 5f presses the counter switch 3a, the number of counts of the pressing is represented by a numerical value. It is input to the counter 3 and displayed on the display unit 3b.
[0017]
Next, the drilling operation of the drilling tool 100 of the present invention will be described with reference to FIGS.
FIG. 6 is a side view showing a state in which a drill bit is held by the drill tool of the present invention. 7 to 9 are plan views showing a drilling tool of the present invention in which a drill bit is held and an object T to be drilled,
As shown in FIG. 6, when the drill bit D, which is a drill bit, is held by the chuck 1 of the drill tool 100 and the cover member 5 is attached to the drill tool main body 10 by the fixing unit 4, the distal end of the drill bit D is formed. Are projected from the opening 5d of the head ring member 5e of the cover member 5 by about 4 to 8 mm.
As described above, since the tip of the drill bit D protrudes from the opening 5d of the cover member 5 by about 4 to 8 mm, the drill bit D can be positioned with respect to the specified drilling position on the object T to be drilled. Easy to do.
[0018]
First, the reset switch 3c of the numerical counter 3 provided in the drilling tool 100 is pressed down, and the count number displayed on the display unit 3b is reset. In this state shown in FIG. 7, "000" is displayed on the display section 3b of the numerical value counter 3. Then, the drill bit 100 is positioned at the specified drilling position with the drilling tool 100 facing the surface of the object T to be drilled.
[0019]
Then, by operating a drilling operation switch 10b or the like of the drilling tool main body 10, a rotation drive mechanism (not shown) is driven to rotate the rotation shaft 2 and to rotate the drill bit D held by the chuck 1. . Then, the drilling tool 100 is brought close to the object T to be drilled, and the drill bit D is pressed against the specified drilling position on the object T.
Then, the drill bit D, which is rotationally driven, enters the back surface of the object T and inward while making the hole T in the object T. As described above, when the drill bit D is pressed against the object T and the drill bit D is made to enter the inside of the back surface of the object T, the drilling tool 100 approaches the object T. 5e contacts the surface of the object T. Further, when the drilling tool 100 is brought close to the object T so that the drill bit D enters the back surface of the object T and inward, by the reaction of bringing the drilling tool 100 close to the object T as shown in FIG. The target T applies an acting force to the head ring member 5e of the cover member 5 in the left direction in the drawing. The cover member 5 is relatively moved to the fixed part 4 side while contracting the coil springs 6 by the action force of the object T. In conjunction with the movement of the cover member 5 toward the fixed portion 4, the connecting rod 5 f integrally formed with a predetermined rod member 5 a of the cover member 5 pushes down the counter switch 3 a of the numerical counter 3. Then, when the counter switch 3a is depressed by the length of time when the hole has been formed in the object T, the count number as the number of times the drilling tool 100 has made the hole H is input to the numerical counter 3. In this state shown in FIG. 8, the display section 3b of the numerical counter 3 displays the count number “001” by one punching operation.
[0020]
Since the opening 5d of the head ring member 5e of the cover member 5 has a circular shape as shown in FIG. 5, the cover member 5 abuts and presses the target T having a spherical surface as well as a flat surface. In this case, a stable contact posture can be obtained. Therefore, the drill bit D can be vertically pressed against the contact surface of the target T at the specified drilling position, and good vertical drilling can be performed.
[0021]
Next, after forming a predetermined hole, the head ring member 5e of the cover member 5 separates from the surface of the object T as the drilling tool 100 is separated from the object T. In this state shown in FIG. 9, the acting force applied to the head ring member 5 e of the cover member 5 by the object T is interrupted, so that the elastic force of the coil springs 6. And return to the predetermined position. The number of perforations performed by the perforation operation is displayed as “001” on the display unit 3b of the numerical counter 3 as the count number.
Then, by continuing the second and subsequent drilling operations in the same manner as the first time, the display unit 3b of the numerical counter 3 displays the count number, which is the number of drilling operations. By confirming the count number, the number of perforations H made in the object T can be grasped.
[0022]
At the end of the predetermined drilling operation, the total number of times displayed on the display unit 3b of the numerical counter 3 is checked, and after the total number of drillings H performed on the object T is determined, the reset switch of the numerical counter 3 is reset. Pressing 3c resets the count displayed on the display 3b. Then, the number of perforations H in the next perforation operation is similarly counted.
Depressing the reset switch 3c and resetting the count number displayed on the display unit 3b is performed for each predetermined drilling operation (for example, for each target T or for each area of the target T), or for drilling. By exchanging the bit D and performing perforations H having different sizes, the number of perforations H can be accurately counted.
[0023]
As described above, in the drilling tool 100 of the present invention, when the drill bit D provided in the drilling tool 100 performs the drilling H on the object T, the rotating shaft 2 that rotates the drill bit D with the drilling operation. The number of movements of the cover member 5 of the moving unit 20 moving in the direction is counted by the numerical counter 3 and displayed. Therefore, the number of perforated holes H is automatically displayed on the numerical counter 3 based on the number of movements of the moving unit 20 linked to the drilling operation, and the numerical value displayed on the numerical counter 3 is confirmed. This makes it possible to accurately grasp the number of perforations H simultaneously with the perforation operation.
Therefore, it is not necessary for the worker to perform the drilling H while counting the number of the drilling H, and it is not necessary for the worker to count the number of the drilling H performed after the drilling operation. it can. In addition, when the operator counts the number of perforations H visually, an erroneous count may occur. Can be counted.
[0024]
In the above embodiment, the tip of the drill bit D protrudes from the opening 5d of the cover member 5. However, the present invention is not limited to this. 5 may be accommodated.
In addition, if the periphery except the opening 5d of the cover member 5 is configured to cover the drill bit D, the chuck 1, and the rotating shaft 2 without any gap, the hand or the like is unnecessary when the rotating shaft 2 is rotated. Since the contact is prevented, a safe structure can be achieved.
Further, in the present embodiment, in the moving unit 20, a member which moves along with the drilling operation and inputs a numerical value to the numerical value counter 3 is a cover member 5, and has a shape and configuration covering the drill bit D and the chuck 1. However, the present invention is not limited to this, and the shape and the like are arbitrary as long as the member is movable in the direction of the rotation axis 2 and inputs a numerical value to the numerical value counter 3 in accordance with the punching operation.
In addition, it goes without saying that specific detailed structures and the like can be appropriately changed.
[0025]
【The invention's effect】
According to the first aspect of the present invention, the drilling tool detects an operation of piercing the object by the piercing bit provided in the drilling tool, and for example, the piercing bit has moved a predetermined distance from the reference point of the object. Since a counter that increases the number of displays is detected by detecting that, the number of perforated holes can be automatically displayed on the counter in conjunction with the perforating operation, and the number of perforated holes can be displayed simultaneously with the perforating operation. It becomes possible to grasp accurately.
[0026]
According to the second aspect of the present invention, the drilling tool counts the number of movements of the cover member that moves in the axial direction of the drilling bit in conjunction with the operation of drilling the target with the drilling bit provided in the drilling tool. The counter that displays the number of perforations can be automatically displayed on the counter based on the number of movements of the cover member accompanying the perforation operation, and the number of perforations can be accurately determined simultaneously with the perforation operation. It becomes possible to grasp.
[0027]
According to the third aspect of the invention, it is needless to say that the same effect as the second aspect of the invention is obtained. In particular, the cover member is provided with a fixing member fixed to the drilling tool main body. A connecting rod that is held movably in the axial direction and is urged toward the distal end by an urging means, is integrally fixed to the cover member, and presses a counter switch provided on the counter. The counter can more reliably count the number of times the cover member moves in the axial direction of the drill bit during the drilling operation.
[Brief description of the drawings]
FIG. 1 is a side view showing a drilling tool according to the present invention.
FIG. 2 is a plan view showing a drilling tool according to the present invention.
FIG. 3 is a side view showing a state in which the drilling tool according to the present invention is separated into a drilling tool main body and a moving unit.
FIG. 4 is a sectional view taken along line IV-IV in FIG. 3;
FIG. 5 is a front view of the moving unit shown in FIG.
FIG. 6 is a side view showing a state in which a drill bit is held by the drilling tool of the present invention.
FIG. 7 is a plan view showing a drilling tool holding a drill bit and an object to be drilled.
FIG. 8 is a plan view showing a drilling tool holding a drill bit and an object to be drilled.
FIG. 9 is a plan view showing a drilling tool holding a drill bit and an object to be drilled.
[Explanation of symbols]
1 chuck 2 rotating shaft 3 numerical counter (counter)
3a counter switch 3b display unit 3c reset switch 4 fixing unit (fixing member)
4a hinge 4b upper fixing member 4c lower fixing member 4d fixing bolt 4e through hole 5 cover member 5a rod member 5b first ring member 5c second ring member 5d opening (tip)
5e Head ring member 5f Connecting rod 6 Coil spring (biasing means)
Reference Signs List 10 drilling tool main body 10a cylindrical portion 10b drilling operation switch 20 moving unit 100 drilling tool D drill bit (drill bit)
T Object H Perforation

Claims (3)

In a drilling tool for drilling an object with a drill bit,
A drilling tool, comprising: a counter for detecting an operation of drilling an object by the drilling bit and increasing a display number. In a drilling tool for drilling an object with a drill bit,
A cover member that moves in the axial direction of the piercing bit in conjunction with an operation of piercing an object by the piercing bit,
A counter for counting and displaying the number of movements of the cover member,
A drilling tool comprising: The cover member,
A fixing member fixed to the body of the drilling tool is held movably in the axial direction of the drill bit,
A connecting rod that is integrally fixed to the cover member and presses a counter switch provided on the counter, and a tip end through which the perforation bit enters and exits;
The drilling tool according to claim 2, wherein the drilling tool is biased toward the distal end by a biasing unit.

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