Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
  • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
  • B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
  • B25H1/0021—Stands, supports or guiding devices for positioning portable tools or for securing them to the work
  • B25H1/0078—Guiding devices for hand tools
  • B25H1/0085—Guiding devices for hand tools by means of levels
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B49/00—Measuring or gauging equipment on boring machines for positioning or guiding the drill; Devices for indicating failure of drills during boring; Centering devices for holes to be bored
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
  • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
  • G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
  • G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
  • G01C9/26—Details
  • G01C9/28—Mountings
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B2260/00—Details of constructional elements
  • B23B2260/004—Adjustable elements

Definitions

• Angular positioning device to be mounted on a portable drilling tool.
• the present invention relates to a device for positioning a drilling tool relative to a plane or an object to be drilled: partition, wall, ceiling, floor, plank tube or other.
• the bubble levels of the positioning device do not allow the drill to be positioned at a chosen angle but only allow drilling on a plane parallel to the horizontal plane and perpendicular to the vertical plane.
• the invention relates to an angular positioning device to be mounted on a portable drilling tool, for example an electric portable drill or a perforator by means of a clamp immobilized by clamping on the nose of the drill or perforator, device in which a graduated drum contains a balance disc automatically returned to the equilibrium position by gravity then making it possible to indicate the vertical whatever the inclination of the longitudinal axis of the drill.
• a portable drilling tool for example an electric portable drill or a perforator by means of a clamp immobilized by clamping on the nose of the drill or perforator, device in which a graduated drum contains a balance disc automatically returned to the equilibrium position by gravity then making it possible to indicate the vertical whatever the inclination of the longitudinal axis of the drill.
• a spirit level placed above the flange or by another gravity device mounted on the flange.
• the inclination of the longitudinal drilling axis in the vertical plane is obtained by the marks on the balance disc with respect to a graduation in angle of the fixed disc and can be determined in advance. for example by the index of a movable cursor or by an index marked on the translucent or transparent cover surrounding the assembly formed by the fixed disk and the balance disk.
• the gravity level devices that is to say a balance disc, are of robust construction.
• the vibrations of the percussion do not affect them.
• the balance discs of these gravity level devices are braked which allows a rapid reading of the inclination and thus avoids a loss of time in work.
• One of the additional advantages of this invention relates to its almost insensitivity to vibrations. This advantage constitutes an important quality for all drilling tools.
• FIG. 1 is a schematic perspective view of the device according to a first variant of the invention mounted for example on a drill, the latter being shown in broken lines
• FIG. 2 is an elevation view of the device for drill according to a second variant of the invention
• FIG. 3 is a plan view of the device for a drill according to the second variant of the invention
• FIG. 4 is a side view of the side of the balance disc drum in the case of the second variant with independent movable index
• FIG. 5 is a view similar to FIG. 4 in the case of the first variant with an index marked on the edge of the transparent cover
• FIG. 1 is a schematic perspective view of the device according to a first variant of the invention mounted for example on a drill, the latter being shown in broken lines
• FIG. 2 is an elevation view of the device for drill according to a second variant of the invention
• FIG. 3 is a plan view of the device for a drill according to the second variant of the invention
• FIG. 4 is a side view of the side of the balance disc drum in the case
• FIG. 6 is an elevation view in the dissociated state showing the various parts making up the level device according to the first variant of the invention without its spirit level
• Figures 7 to 9 are front views of the different parts of the example of the oscillating assembly shown in FIG. 6, respectively the fixed disc forming a shutter on the flange side, the movable inner balance disc, and the outer cylindrical cover in the case of the first variant
• FIGS. 10 to 12 are diagrams illustrating the use of the invention before and during drilling in a respectively inclined wall, ceiling, and floor
• Figure 13 is a general perspective view showing a drill with a mount equipped with two level devices with pendulum
• FIG. 14 is a view identical to the previous one on which the additional level device with pendulum is tiltable mounted on the frame
• FIG. 15 is a composite view of exploded profile on which the support with fixed inclination has been shown. and the support tilting by a hinge
• Figures 16 and 17 are schematic perspective views showing two positions of a drill during work.
• the angular positioning device of the invention consists of a support for example in the form of a split flange or frame 1 which is fixedly mounted on the collar 2 of the nose 3 of a portable drilling tool for example d 'a drill 4.
• this support in the form of a flange is locked on the collar of the drill using a clamping screw 5 enclosing the support around the nose of the drill by bringing the two edges of the slot.
• the split flange 1 can have a tapped hole for fixing a handle 6 and one or more through-hole (s) for mounting one or more possible ) depth stop or support rod (s) (not shown), these can each be blocked by a screw.
• a drill bit 7 is mounted on the drill chuck.
• stops can also serve as a support support during drilling by means of each a support head, stop sleeves, a compression spring and a free sliding assembly.
• the flange-shaped support 1 receives on its upper part a small bubble level 8 in the form of a bubble flask 9 to assess a horizontality.
• the parallel body of this bubble level 8 is mounted fixed on or secured to the upper edge 10 of the flange to allow to visually indicate a direction parallel to the front plane of the flange. This direction, if the mounting of the flange on the drill is correct, is a direction perpendicular to the drilling axis.
• the general object of the invention is to orient the drilling axis of the drill as best as possible perpendicular to the plane of the face of the wall or of the object to be drilled or in inclination at a certain angle corresponding to a bias drilling. .
• the face of the wall to be drilled is either horizontal or vertical with a precision specific to the field of use.
• the spirit level 8 makes it possible to guarantee that the maintenance of the tool by the operator is correct and to give an indication of angular deviation of the handle-drill plane relative to the ideal working plane.
• the angular positioning device according to the invention comprises a second level 11 which is quite specific.
• This second level 11 consists of a pivoting assembly 12 in the form of a drum mounted laterally on the flange on the right side or on the left side, for example on the right side as shown in the Figures 1, 2 and 3.
• This pivoting assembly 12 in drum consists first of all of a fixed disc 13 mounted by means for example of two screws such as 14 and 15 as shown in Figure 7 on the side edge of the flange 1, then a balance disc 16 mounted oscillating by pivoting in the median plane of the flange around a pivot axis 17 and finally a cylindrical protective cover 18 enclosing the assembly as shown in the figures.
• the fixed disc 13 carries on its lateral surface a scale in the form of a graduation 19 for example in the form of a scale graduated in degrees on either side of a central reference 20 referenced zero.
• the balance disc 16 has on its lateral surface a succession of marks or arrows such as 21 of coincidence arranged at constant angular distance for example every 90 ° whose position relative to the graduated scale gives the inclination of the axis of drilling in degrees from the horizontal with an accuracy estimated sufficient for the current work carried out.
• the cover 18 has on its edge at least one transparent part, for example over its entire width and over an extended angular sector or over its entire circumference.
• This window or this transparent edge makes it possible to read the inclination in degrees over an angular portion corresponding to the needs of current use or over the entire circumference. It is of course also possible to envisage a transparent edge on only a half circumference.
• the graduated fixed disc 13 is immobilized for example by the two screws 14 and 15 fixing it to the adjacent lateral edge of the flange 1 at the same time as a bottom and sealing plate 22 provided with a perimeter sealing joint 23 on which the edges of the cover come to bear.
• the pivot axis 17 is mounted in the flange and passes through the bottom plate 22 of the cover and the fixed graduated disc 13 so as to emerge in the form of an end of the axis 24 on a part of which the disc is pivotally mounted. pendulum 16.
• the pivot axis 17 is stepped, that is to say it has at least one shoulder which reduces its diameter at the outlet of the fixed disc 13 for the first time in order to end. by a threaded portion 25 of smaller diameter.
• the pivot axis 17 is for example mounted in a bore 26 machined in the body of the flange 1 and immobilized in this bore 26 by a needle screw 27 passing through its center the side wall of the flange
• the balance disc 16 is mounted on the end of the axis 24 by its central bearing part 28 for example provided with a ball bearing 29 or any other form of bearing or bearing, anti-friction ring or the like making it possible to reduce friction.
• a nut 30 for example a blind nut, immobilizes the cover 18 through at least one flat washer 31 and an elastic effect washer 32.
• the cover 18 is shaped, for example, into a transparent circular shell closed at one of its ends by the bottom plate 22.
• the balance disc 16 is a disc of a certain thickness, the central part 28 of which is hollowed out to receive, as indicated, for example a bearing 29 or an anti-friction ring or any other bearing means or bearing allowing pivoting practically free of friction.
• the balance disc 16 presents in the upper part an obviously technical crossing or an openwork 33 for example in the shape of a bean. The extent of this obviously can go as far as using the entire upper part of the disc as shown in FIG. 8.
• a ballast 34 is incorporated into the disc in the opposite lower part as represented. This ballast 34 can take the form of a pellet or counterweight forced into a bore or attached and secured to the surface or any other equivalent means.
• a magnetized mass 35 in particular a conventional magnet or a ferrite for example in the form of a magnetized patch whose front face is immobilized in the plane. of the balance disc 16 to come flush with this face.
• a circular braking plate 36 made of magnetic metal, for example of mild steel, is mounted a short distance from the front of the magnetized mass 35 by a spacer sleeve 37 on the end of the axle 24 and doubles the closed bottom of the hood's cylindrical shell.
• an index 38 makes it possible to keep a starting position or angle.
• the index 38 is a simple marking 39 on the transparent cover for example in the form of an arrow as shown in FIG. 1.
• This index is in principle fixed, but can move with the cover by the pivoting movement thereof allowed by the elastic stress of the elastic washer via which the locking nut bears on the front face of the cover.
• the index finger 38 is produced in the form for example of a radial finger 40 with a bent end 41 forming an index finger and pivotally mounted on the threaded end of the shaft 24 also under elastic stress provided by an elastic washer and one locking nut.
• This finger can pivot around the entire periphery of the cover. Its rest position is the central position in which it can be locked. It allows during the choice of the determined angle, a quick visualization thereof during the drilling operation.
• the user positions one of the pins of the balance disc opposite the most visible graduation for the user, either 0 or 90 of the fixed disc. Drilling is carried out by holding the two marks (fixed and mobile) opposite one another. The perpendicularity with respect to the partition in the horizontal plane is carried out visually by the operator (stereoscopic vision).
• the user positions one of the pendulum disc markers opposite the 90 ° graduation of the fixed disc and in the other plane positions the drill so as to have the bubble level in the center of the two vial marks.
• the user positions the cursor index in front of the requested angular graduation of the fixed disc and positions the drill so as to match the mark on the balance disc in front of the movable index. In the case of a vertical drilling, it uses the level for the perpendicularity in the other plane.
• control cylinder (not shown) is fixed on it, it is placed on the surface to be drilled, taking care to position the bubble of the level between its marks, the index of the slider or cover in front of the mark on the mobile disc (most visible during the drilling operation). This will indicate the angle of the part to be drilled.
• control cylinder is dismantled, the device is reassembled on the drill and the hole is drilled while maintaining the mark on the movable disc opposite the cursor index or that of the cover.
• the index of the movable cursor or that of the cover is moved by more or less than l after adjustment with the control cylinder 'desired angle.
• This device provided with its control cylinder (not shown) can also serve as double level or clinometer (search for an angle or positioning of a part with respect to a given angle).
• the constituent parts of the device of the invention are preferably assembled by screwing. However, it may be envisaged to replace all or part of these screws with welds, rivets or any other suitable means.
• the device according to the invention can be manufactured by injection using synthetic material known by the acronym ABS or other equivalent material for the occasional handyman or aluminum alloy die-cast for professionals.
• the shape of the flange of the device of the invention shown in the figures is only given by way of example and may be freely modified, for example to adapt it to a perforator or to a cordless drill.
• a second level device 42 with pendulum disc which allows drilling with precision in the standing position of the drill or perforator or in an inclined position. This presentation is relatively infrequent but occurs whenever the user does not have enough space to drill in line, arms forward like a standing shooter holding his rifle.
• This level 42 device covers, with the main device already described, the majority of piercing cases.
• the additional level 42 device with pendulum disc consists of roughly the same elements as that already described.
• the housing 43 comprises a housing 43 with transparent lateral surface fixed on or articulated to a support.
• the housing contains a drum or cylinder 44 forming a pendulum pivotally mounted on an axis by two ball bearings 45 and 46 or any other equivalent means.
• the drum 44 is stabilized laterally, for example by washers. It has on its lateral surface a graduation 47 marked for example directly on its lateral surface.
• a movable index 48, secured for example to the movable cover 49 of the housing 43 serves as a reference for displaying a given inclination.
• the full drum 44 is hollowed out in its upper part so as to present the maximum mass in its inner lower part.
• the drum 44 is therefore brought automatically by gravity and pendulum effect into a position in which its heaviest part is placed by pivoting and damped oscillations and remains at the bottom. This effect can be amplified by a ballast weight (not shown).
• this level device also includes a magnetic damper or brake as before, in the form of a magnetic counterweight 50 comprising a flat front end face 51 disposed in the center of the part not hollowed out. This front end face is slightly projecting to extend a short distance from a metallic disc 52 for braking of magnetic metal, for example mild steel. These two parts are separated by a small gap or air gap by a spacer 53 or by a shoulder of the disc 52. They together form a magnetic brake making it possible to damp the oscillations by greatly reducing the amplitudes and their number. This makes its use compatible with user expectations.
• the housing 43 is assembled and fixed to a support 54 by a set of screws 55 and nut 56 enclosing the base 57 of the housing 43 by means of a spacer piece 58.
• the screw 55 serves as a pivot axis around which pivots the drum 44.
• the support 54 is in the embodiment illustrated by the drawings in the form of a square rod 59 which is mounted by sliding in a notch 60 of the flange or mount 1 on the drilling tool and immobilized thereon. this.
• the housing 43 of the device there is no need for the housing 43 of the device to be vertical for it to function.
• a certain inclination of the body of the drill is sufficient, for example from 45 ° to obtain a level effect.
• This additional level 42 and positioning device provides additional possibilities for ideal drilling in particular positions, for example standing or at an angle or in tight spaces or in difficult and uncomfortable positions in which a positioning aid is welcome.
• a positioning aid is welcome.
• other possibilities are also offered by the addition of an articulation between the housing and the support 54.
• the support by which it is mounted on the frame can be produced in two parts 61 and 62 as shown in FIG. 14 and the right part of the figure. 15 one of which is integral with the base of the housing 43 and the other forms the extension of the rod of the support to be immobilized on the frame 1.
• These two parts 61 and 62 are connected together by a pivoting articulation 63 or by a ball joint so as to be able to vary the inclination of the housing relative to the body of the drill as shown and thus allow a correct presentation of the drill during the drilling work as illustrated in FIGS. 16 and 17.
• the articulation 63 preferably have at least one positioning mark relative to the body of the drill and more particularly relative to the drilling axis to know its inclination and refer to it.
• a pivoting articulation comprising notches and immobilizable in a given position is perfectly suitable.
• the immobilization can result from a tightening of the joint for example by means of a screw 64 and a nut 65 (FIG. 14).
• the additional level device 42 is mounted in the notch 60 of the frame 1 and immobilized therein by means of a screw 66.
• the mount 1 thus equipped with its level devices offers numerous possibilities for precise drilling and in the ideal axis. Indeed, the drum or the cylinder 44 of the housing 43 in an inclined position is already subjected to the effects of gravity and makes it possible to properly present the drill in an ideal working position among other positions around the optimal drilling axis. This is illustrated by FIGS. 16 and 17. There remains the control, which often appears to be secondary, because the user thinks he is in control, of the position of the body of the drill to the right or to the left of the ideal drilling axis. .
• One of the possible means of controlling lateral movements which can be associated with the main means of this invention is that briefly described below but not shown.
• the mount 1 is equipped with at least two rods which can also serve as a depth stop. These rods are mounted parallel on the mount 1 so as to be located on either side of the nose of the drilling tool.
• simple parts commercially available may be suitable. These parts generally consist of a front part in contact pad terminated by a plate, pivotally assembled to a fork constituting the extension of a connection piece inserted on the end of the rod.
• the rods are slidably mounted on the frame 1 each through a bore and each comprise abutment means for example at least two abutment bushes immobilizable by a screw at any point along their length.
• One of the stop sleeves is located on the side of the mount corresponding to the user. It is the adjustment of the maximum output of the rod and the other sleeve is located on the other side for the adjustment of the depth of penetration. Between the depth stop sleeve and the plate, a compression and return spring acting on the insertion due to drilling is threaded on each rod.
• Each rod is graduated or has markers or colored zones.
• the perfect drilling that is to say that carried out in the ideal axis, is that determined by the level devices and that for which the rods sink identically according to the same displacement. It can be visually checked during drilling or preferably provide an additional means which forces the rods to move together in the same way for example a twinning means in the form of a bar, screed or twinning veil or more bars connected to at least two free and adjusted sockets on the rods moving with little play on the rods or any other suitable deformable or not means: triangle or parallelogram or articulated or non-deformable cross or other equivalent means of twinning. This avoids the slight biasing of the drilling tool during drilling relative to the ideal drilling axis.
• the means for controlling the lateral movements of the drilling tool is mounted on the flange or mount 1 and produced in the form of two sliding rods on the mount 1 each terminated at one of their ends by a support pad.
• the two rods are joined together by means of twinning making it possible to guarantee a parallel maintenance of these during at least the first phase of drilling.
• the support pads of the two rods are combined into a single support piece forming an additional means of twinning.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Radar, Positioning & Navigation (AREA)
• Remote Sensing (AREA)
• Drilling And Boring (AREA)

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• 2002
  • 2002-11-26 FR FR0214834A patent/FR2847503B1/fr not_active Expired - Fee Related
• 2003
  • 2003-11-26 EP EP03789508A patent/EP1569775A1/de not_active Withdrawn
  • 2003-11-26 WO PCT/FR2003/003496 patent/WO2004050308A1/fr not_active Application Discontinuation
  • 2003-11-26 AU AU2003294090A patent/AU2003294090A1/en not_active Abandoned

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