RU2278005C1 - Electric drill with drilling accuracy enhancing device - Google Patents

Abstract

FIELD: machine engineering, namely manual drilling apparatuses, possibly for drilling openings in metals, wood, plastics and other materials.

SUBSTANCE: electric drill includes housing, reduction gear, spindle, clamping chuck, drill, turn on button and mirror designed for placing onto worked surface. Electric drill also includes laser apparatus in the form of laser that may direct laser beam by inclination angle 1.5 - 2.5° relative to drill rotation axis; and dull glass mounted on housing of apparatus and having concentric circles. Mirror may be mounted on worked surface by inclination angle 0 - 90° relative to laser beam according to condition providing laser beam reflection onto dull glass. The last may be mounted by angle 90° relative to laser beam reflected from mirror. Laser may be moved on housing of electric drill along rotation axis of drill.

EFFECT: improved accuracy of drilling by preset angles regardless of inclination angle of worked surface and illumination degree.

2 cl, 3 dwg

Description

The invention relates to the field of mechanical engineering, in particular to manual drilling machines. It is used for drilling holes in metal, wood, plastic and other materials.

The prior art drills of various manufacturers in Russia and abroad.

Drills are equipped with various devices that expand their technological capabilities, but they do not have devices that allow you to adjust the angle of inclination of the drill relative to the workpiece during drilling.

The closest analogue adopted for the prototype of the claimed invention can be considered an electric drill "patent VS 5052112, oct. 1991. "

This invention extends the technological capabilities of the drill, but has significant disadvantages:

1. In order to adjust the position of the drill, the pupil of the operator must be on the line of sight passing through the center of the device, which is a tube. Thus, his head should always be above the device, and this is not always convenient and in many cases impossible.

2. In all cases, when working with an electric drill, considerable effort is required. For this, the operator seeks to position the bct (general center of gravity) above the drilling point, and this device does not allow this.

3. The essence of the described invention is that when the tube is perpendicular to the mirror, when looking through the upper end of the tube, as through an eyepiece, the lower section of the tube is visible in a circle. Aligning this circle with the center of the circumference of the upper cut of the tube, the perpendicular position of the drill relative to the mirror is achieved.

All of the above is difficult in poor lighting and vibration of the drill or part.

The invention solves the problem of achieving accurate drilling at predetermined angles, regardless of the angle of inclination of the work surface and the illumination, up to using the tool in the dark.

The essence of the invention lies in the fact that for drilling holes a laser device is used, consisting of: a laser 2 mounted in a housing convenient for mounting it on a drill, frosted glass 4 with concentric circles mounted on the same housing as the laser, and having the ability to be installed at an angle of 90 degrees to the laser beam 3 in working condition. Frosted glass can fold when there is no need for a laser.

An integral part of the device is a mirror 6, which serves to reflect the laser beam. The mirror is mounted on a magnetic base 7 for its fastening by steels and has the ability to be installed at angles from 0 to 90 degrees with respect to the work surface. To mount the mirror on other materials, adhesive tape or spikes are used.

In the drill body there are three grooves 5 for mounting the laser 2. The laser has the ability to move along the groove 5 and be installed at the desired distance. For this, millimeter divisions are applied along the edge of the gutter. The laser 2 is installed in the groove 5 of the drill 1 at the required angle of about 1.5-2.5 degrees from the axis of rotation of the drill so that, with a strictly vertical position of the drill, the reflected laser beam 3 is projected in the center of the concentric circles of the frosted glass 4.

The invention is illustrated by the following drawings:

Figure 1 is a schematic diagram of the operation of a laser device when drilling at right angles.

Figure 2 - schematic diagram and position of the mirror when drilling at a given angle.

Figure 3 is a General view of the laser.

Items used in the drawings:

1. Electric drill

2. Laser

3. Laser beams

4. Frosted glass with concentric circles

5. Trench with millimeter divisions

6. Mirror

7. Magnetic base for mounting the mirror

8. Liquid level

9. Millimeter divisions

The device operates as follows.

Mirror 6 is mounted next to the hole. The drill 1 is set so that the reflected beam 3 of the laser 2 is projected in the center of the concentric circles of the frosted glass 4. In this position, drilling is performed.

When drilling holes at an angle, the mirror 6 is installed at a given angle. Drilling is performed when projecting the reflected beam 3 in the center of concentric circles 4.

When drilling holes in a double-walled profile, after the first wall is drilled in order to maintain the original beam length and minimize the error, the laser moves away along the groove of the drill 5, at a distance equal to half the distance from one wall to another.

If necessary, the laser can be rearranged on the other side of the drill.

Thus, the task is solved, the purpose of which is to achieve accurate drilling of holes regardless of the inclination of the surface of the part and the illumination.

Claims (2)

1. An electric drill comprising a housing, a gearbox, a spindle, a chuck, a drill, a power button and a mirror designed to be mounted on a workpiece, characterized in that it is equipped with a laser device in the form of a laser configured to direct the laser beam at an angle of 1, 5 ... 2.5 ° to the axis of rotation of the drill and frosted glass mounted on the laser housing with concentric circles, the mirror is made with the possibility of installation on the treated surface at an angle from 0 to 90 ° to the laser beam from the condition of the reflection of the laser beam on the frosted glass, and the frosted glass is made with the possibility of installation at an angle of 90 ° to the laser beam reflected from the mirror. 2. Electric drill according to claim 1, characterized in that the laser is arranged to move along the drill body along the axis of rotation of the drill.

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