JP3713500B2 - 3D level and drilling method for portable drills and taps - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a three-dimensional level and a drilling method for portable drills and taps in the field of drilling and tapping .
[0002]
[Prior art]
In order to attach or assemble a member, drilling or tapping with a portable electric drill is widely performed. When drilling or tapping the workpiece, the electric drill is held so that the drill is perpendicular to the workpiece surface. However, an operator holds an electric drill by visual inspection or intuition, and drills or taps the workpiece by applying a drill to the work surface.
[0003]
[Prior art documents]
Therefore, as a result of conducting a prior patent search on the above-described technology, Japanese Utility Model Publication No. 6-45342, Japanese Patent Application Laid-Open No. 8-215910, Japanese Patent Application Laid-Open No. 7-223106, Japanese Utility Model Laid-Open No. 7-15209, and the like were searched. .
[0004]
In the above three publications, all the level is integrated with the drill body, the level of the level is variable with respect to the vertical and horizontal directions of the drill, and the vertical angle to the surface to be machined is variable. It has been proposed to drill. In the latter publication, it is proposed that the drill body is fixed with a fixing bolt and nut, and a level is attached to the base via a magnet body to make a hole vertically.
[0005]
[Problems to be solved by the invention]
However, in these cases, even if the level can be adjusted in two dimensions with respect to the inclined surface of the work surface, the inclination angle cannot be set variably in three dimensions. There has been a demand for a material that can be freely applied to various surfaces to be machined.
[0006]
[Means for Solving the Problems]
The present invention has been made in view of the above points, and in order to solve the above-described problems, a portable electric drill is provided so that drilling and tapping can be performed at right angles to an inclined work surface. A level is attached to the drill body through a joint means such as a universal joint or a flexible joint so that it can be tilted in three dimensions, and as a right-angled centering tool, it is brought into contact with the work surface of the drilled part or tap part in a cross shape. For this purpose, a right-angled axis is formed at the center of the cross-shaped leg in a perpendicular shape, and the orthogonal right-axis of the right-angled centering tool that is in contact with the surface to be machined at a right angle is used for the electric drill. A three-dimensionally tiltable level attached to the electric drill so that it can be inserted into the drill chuck and the right-angled centering tool abuts at right angles on the work surface of the drilled part or tapped part. The bubble holding part of the 3D level and right-angle centering tool so that the right-angle shaft inserted into the electric drill can be replaced with a drill or tap so that the drill or tap can be easily and accurately opposed to the work surface at a right angle. The present invention provides a three-dimensional level and a drilling method for portable drills and taps characterized by combining the above.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
The portable drill and tap three-dimensional level and drilling method of the present invention can be applied to a drill body of a portable electric drill so that drilling and tapping can be performed at right angles to an inclined workpiece surface. The level is attached via joint means such as a universal joint or flexible joint so that it can tilt in three dimensions, and as a right-angled centering tool, a cross is used to abut against the work surface of the drilled part or tap part. The right angle axis of the right angle centering tool that is formed with the right angle axis standing upright at the center of the leg material orthogonal to the work surface and perpendicular to the work surface is used as the drill chuck of the electric drill. Holds the right-angle centering tool at a right angle to the work surface of the drilled part or tap part, and can hold the bubble in a three-dimensionally tiltable level attached to the electric drill. Level the unit 3D level and right angle centering tool so that the right axis inserted into the electric drill can be replaced with a drill or tap so that the drill or tap can be easily and accurately opposed to the work surface at a right angle. It is characterized by combining.
[0008]
The portable drill 1 can be applied to a cordless or corded electric drill or tap. As shown in FIG. 1, a small level 3 can be tilted freely in three dimensions on the side of the drill body 2 or the like. It is detachably attached via a joint means 4 such as a universal joint or a flexible joint, so that a drill 5 can be perpendicularly opposed to any inclined surface of a workpiece so that drilling or tapping can be performed. .
[0009]
The level 3 is preferably a thin and small-sized one, and an inexpensive unitary molded product in which bubbles are contained in a commercially available plastic container can be applied.
[0010]
As the joint means 4, as shown in FIGS. 2 (a) and 2 (b), a hook-like shaft support portion 7 is provided on the mounting base 6, and a turning shaft 8 is attached to the center of the turning shaft 8. A spirit level support shaft 9 is pivotally attached, and a spirit level base 10 is screwed to the tip thereof. The level 3 is integrally mounted on the level scale base 10 so that the level 3 can be tilted in three dimensions. It can be a universal joint or the like.
[0011]
A fixing screw 11 is attached to the pivot shaft 8 and a tightening screw 12 is attached to the level support shaft 9, so that the level 3 can be firmly fixed at a predetermined inclination angle. If necessary, a loosening prevention spring can be attached.
[0012]
Then, the mounting base 6 of the joint means 4 is detachably attached to an appropriate position on the side surface of the drill body 2 by an attaching / detaching means 13 such as a velvet fastener, a magnet body, or a double-sided adhesive tape, and is perpendicular to the surface to be processed. Drilling and tapping can be performed.
[0013]
Further, as shown in FIGS. 3 and 4, a right-angle centering tool 15 is inserted into the drill chuck 14 of the drill body 2 so that the drill body 2 can be accurately positioned perpendicular to the work surface. At the same time, the level 3 is tilted to the horizontal state via the joint means 4 described above, the bubble is positioned at the center, the right-angle centering tool 15 is replaced with the drill 5 and inserted, and the drill body 2 is objectively mounted. It is possible to perform machining at a right angle to the work surface.
[0014]
As the right-angled centering tool 15, as shown in FIGS. 3A and 3B, a right-angle shaft 17 is vertically screwed at the center of a leg member 16 having an appropriate length of 50 to 80 mm that can be assembled in an orthogonal shape. As shown in FIG. 4, the right angle shaft 17 is inserted into the drill chuck 14 as shown in FIG. 4, so that the drill body 2 faces the processing surface at a right angle as described above.
[0015]
On the back surface side of the leg member 16, projections 19 are provided in the same height around the right-angle shaft hole 18 at the same height, and the contact surface is in contact with the work surface via the projection 19. It is preferable to avoid errors due to the uneven surface.
[0016]
The right-angled centering tool 15 is preferably assembled in a right-angle shape in this way because it is convenient for transportation and storage, but can be modified appropriately according to the gist of the present invention.
[0017]
In addition to the universal joint of the joint means 4, the level 3 can be tilted in three dimensions as a flexible joint such as a flexible wire.
[0018]
【Example】
1 and 2 show an embodiment of the present invention. As shown in FIG. 1, a portable drill 1 of a small electric drill is detachably attached to a side surface of a drill body 2 with a velvet fastener attaching / detaching means 13 via a joint means 4 of a universal joint. Therefore, drilling and tapping can be performed easily at a right angle.
[0019]
As the joint means 4, as shown in FIGS. 2 (a) and 2 (b), a hook-like shaft support portion 7 is provided on the mounting base 6, and a turning shaft 8 is attached to the center. A level support base 9 is pivotally attached, and a level base 10 is screwed to the tip thereof. The level 3 is integrally mounted on the level base 10 so that the level 3 can be tilted in three dimensions. It is a joint.
[0020]
The joint means 4 can be tilted in three dimensions via the pivot shaft 8 and the level support shaft 9 as described above, and the surface to be machined is a horizontal plane and a plane tilted two-dimensionally or three-dimensionally on a vertical plane. However, the level 3 can be easily swung horizontally through the joint means 4 of the universal joint, and the level of the level 3 is such that the portable drill 1 is perpendicularly opposed to the surface to be processed. It can be drilled and tapped.
[0021]
Then, a right-angle shaft 17 screwed perpendicularly to the leg 16 at the center of the leg 16 of the right-angled centering tool 15 assembled in an orthogonal cross shape as shown in FIG. 4 is attached to the drill chuck 14 of the drill body 2. The drill body 2 can be easily centered at right angles to the work surface by inserting and attaching the right-angle centering tool 15 to the work surface. As described above, the level 3 is adjusted and set to a horizontal shape. The right-angle centering tool 15 can be removed and a required drill or tap can be inserted and processed.
[0022]
Since the level can be tilted in three dimensions in this way, the drill body can be easily opposed to the inclined surface at a right angle to allow drilling and tapping regardless of the inclined surface to be processed. The level can be easily attached to and used for other electric drills by simple attaching / detaching means of the velvet fastener.
[0023]
In addition, by inserting the right angle shaft of the right angle centering tool into the drill chuck, the drill body can be easily and accurately positioned at right angles to the surface to be drilled or tapped. It can be adjusted horizontally and accurately drilled and tapped.
[0024]
Note that the structure of the universal joint described above is that of one embodiment, and other hook mechanisms and the like can be implemented, and a flexible joint can be used. In addition, the right-angled centering tool is preferable because it can be disassembled and accommodated in a compact manner in the above embodiment, but other modifications can be implemented based on the gist of the present invention.
[0025]
【The invention's effect】
As described above, according to the present invention, the level is attached to the portable electric drill via a joint means such as a universal joint or a flexible joint so that the level can be tilted in three dimensions. Even if the surface to be machined can be tilted two-dimensionally or three- dimensionally, a portable electric drill can be opposed to the surface at right angles, and drilling and tapping can be performed at right angles to the surface to be processed. It can be done.
[0026]
If the joint means of a universal joint or flexible joint can be tilted in three dimensions and attached to a spirit level and detachably attached to a portable drill body via a velvet fastener or a magnet body, one portable It is similarly attached to other portable drills as well as the electric drill for use, and has the effects and effects as described above.
[0027]
In particular, as a right-angled centering tool, a right-angled axis is set up perpendicularly at the center of a leg material orthogonal to the cross shape so as to abut on the work surface of the perforated part or tap part in a cross shape. The drill body can be positioned easily and accurately at right angles to the surface to be processed through the tool, and the above-described level can be adjusted more precisely to the horizontal, and drilling and tapping can be performed.
[0028]
Then, an orthogonal right angle axis of the right angle centering tool that is brought into contact with the work surface at a right angle is formed to be freely inserted into the drill chuck of the electric drill, and the right angle centering tool is brought into contact with the work surface at a right angle. By inserting the right angle axis of the right angle centering tool into the drill chuck of the drill body and abutting the right angle centering tool on the work surface, the electric drill can be easily centered at right angles to the work surface. Adjust the level so that it is horizontal, remove the right-angle centering tool, insert the required drill or tap, and level the level to easily and accurately face the work surface. Thus, the drill body can be positioned, and the above-described three-dimensional level can be adjusted horizontally to perform drilling and tapping.
[0029]
In this way, the level can be tilted three-dimensionally, and through a right-angled centering tool, the surface to be machined is perforated or tapped vertically with respect to a surface that is inclined two-dimensionally or three-dimensionally. Can be done.
Then, as a right-angled centering tool, protrusions are provided at the same height so as to be axially symmetrical on the back side of the cross-shaped leg material for contacting the processed surface of the perforated part or tap part in a cross-shaped manner. By making contact with the surface to be processed via the protrusion, it is possible to avoid errors due to the uneven surface of the contact surface.
[0030]
In addition, hook-type bearings are provided on both sides of the mounting base for detachably attaching the level to a portable electric drill via a velvet fastener or a magnet body, and the swivel shaft is pivotally attached. A level support shaft is attached to the center of the shaft at a right angle to the swivel axis, and a level stand with an integrated level is attached to the tip of the level support shaft. The swivel shaft is fixed to a predetermined inclination angle so that the swivel shaft can be tightened and loosened through a fixing screw so that the fixing screw can be turned by hand, and the spirit level is swung around a level support shaft. By screwing the swivel screw so that it can be tightened loosely via a tightening screw so that it can be fixed at an inclination angle, it can be tilted in three dimensions via the swivel shaft and the level support shaft. The above also applies to the surface where the work surface is inclined in two or three dimensions And a level via the coupling means of the universal joint can be easily swiveled horizontally, in which it is at right angles to the drilling and tapping a power drill to face at a right angle for mobile the treated surface.
[Brief description of the drawings]
FIG. 1 is an explanatory front view of an embodiment of the present invention;
FIG. 2 is a plan view (a) and a front view (b) of the level unit.
FIG. 3 is a plan view (a) and an exploded view (b) of the right-angled centering tool,
FIG. 4 is an explanatory diagram of a use state of the above.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Portable drill 2 ... Drill main body 3 ... Level 4 ... Universal joint 5 ... Drill chuck 13 ... Detachment means

Claims (4)

Through a joint means such as a universal joint or a flexible joint, the level can be tilted in three dimensions on the drill body of a portable electric drill so that drilling and tapping can be performed at right angles to the inclined work surface. And attach
As a right-angled centering tool, a right-angled axis is erected perpendicularly at the center of the leg material orthogonal to the cross shape in order to contact the work surface of the drilled portion or tap portion in a cross shape,
An orthogonal right angle axis of a right angle centering tool that is in contact with the work surface at a right angle is formed so as to be freely inserted into the drill chuck of the electric drill, and the right angle core is formed on the work surface of the drilled portion or the tap portion. Drilling the right angle shaft inserted in the electric drill so that the ejector comes in contact with the right angle and the bubble holding part of the three-dimensional tiltable level attached to the electric drill is set in a horizontal state. 3 for portable drills and taps, characterized by combining a three-dimensional level and a right-angle centering tool so that the drills and taps can be easily and accurately opposed to the work surface by exchanging them with taps. Dimension level. While providing a hook-like bearing on both sides of the mounting base for detachably attaching the level to a portable electric drill via a velvet fastener or magnet body,
At the center of this swivel axis, a level support shaft is attached at right angles to the swivel axis, and a level stand with a level attached integrally is attached to the tip of this level support shaft. The swivel shaft is swiveled around and fixed with a predetermined inclination angle. The swivel shaft is screwed into the fixing screw so that it can be tightened and loosened via a fixing screw. The three-dimensional level for portable drills and taps according to claim 1, wherein the swivel shaft is screwed so as to be able to be tightened and loosened via a tightening screw so as to be freely fixed at an inclination angle of 2. As a right-angled centering tool , a protrusion is projected at the same height on the back side of a cross-shaped leg material for making a cross-shaped contact with the work surface of the perforated part or tap part. The three-dimensional level for portable drills and taps according to claim 1 or 2, wherein the three-dimensional level for portable drills and taps is adapted to abut on the surface to be processed via a screw . Through a joint means such as a universal joint or a flexible joint, the level can be tilted in three dimensions on the drill body of a portable electric drill so that drilling and tapping can be performed at right angles to the inclined work surface. Mounting,
A right-angled core with a right -angle axis erected in the center of the cross-shaped leg material in order to abut on the work surface of the drilled or tapped portion in a cross shape so as to abut on the work surface at a right angle Insert the right angle axis of the ejector into the drill chuck of the electric drill,
The above-mentioned electric drill is mounted in a horizontal state with a three-dimensionally tiltable bubble holding part attached to the electric drill by bringing the right-angled centering tool into contact with the work surface of the drilling part or the tap part at a right angle. Set the bubble holding part of the attached three-dimensional tiltable level in a horizontal state, remove the right-angled centering tool attached to the electric drill, insert the predetermined drill or tap, The three-dimensional portable drill or tap is characterized in that the drill holding part of the drill or tap is formed by securing the bubble holding part of the level in a horizontal state so as to face the processing surface of the tap part at a right angle. Drilling method using a spirit level.

Images