CS272024B1 - Vertical drilling equipment - Google Patents

Abstract

Perpendicular drilling equipment is intended especially for hand drills. The device has a template with a rotatably mounted spirit level. The template has been created at its bottom grooves that are aligned with the guides protrusions formed on the drill body and a prism axis formed on a plane templates. The oblique plane is perpendicular to the prism axis and to the axis of the line created at slider that is part of the template.

Description

The invention provides a device for perpendicular drilling, in particular on hand drills.

The known perpendicular drilling device is designed such that the spirit level is fixed firmly on the drill and can be used only when the drilling surface _{t is} in a horizontal plane or in a plane perpendicular to this plane. In the case of inclined or shaped surfaces, this device cannot ensure the perpendicularity of the borehole, thereby limiting its applicability.

The essence of the perpendicular drilling device, in particular on hand drills, is that the template provided with a rotatable spirit level has grooves in its lower part which are coaxial with the guide projections formed on the drill body and the prism axis formed on the elevation plane of the template. This elevation plane is perpendicular to the prism line and the line of the line formed on the sliding viewfinder that is part of the template.

The main advantages of the perpendicular drilling device, in particular on the hand drills according to the invention, are that it makes it possible to ensure the perpendicularity of the drill hole on inclined or shaped surfaces.

In the accompanying drawing, FIG. 1 is an elevational view of an exemplary embodiment of a perpendicular drilling device according to the present invention; FIG. 2 shows this device in cross-section;

The template 1 has a screw 9 with a washer 8 by means of a nut 4, which is a part of the template 2 rotatably supported by a spirit level 6, which is fixed between the holder 3 and the cover plate 5 and reinforced with a sealant 7. The template 1 has grooves 11 at its bottom. with guide projections 10 formed on the drill body 15 and a prism axis 13 formed on the elevation plane, 12. The elevation plane 12 of the template 1 is perpendicular to the axis of the prism 1g and to the axis of the line 14 formed on the sliding viewfinder 2, which is also part of the template 1.

Before drilling the required hole · on the inclined surface, remove the template 1 from the guide projections 10. Place the plane 12 of the template 1 on the given surface, loosen the screw 9 and adjust the spirit level 6 to the drilled surface. drill body 15. When drilling a hole on shaped surfaces, such as round timber, mark the drill hole with a punch, attach the template 7 and prism 13 to the diameter so that the punch is pointing to the line 14 formed on the sliding viewfinder 2, align the spirit level 6 and of the screw 9, slide the template 1 again into the guide lugs 10 on the device body 15.

The design of the perpendicular drilling device according to the invention (allows to ensure the perpendicularity of the drilled holes with the hand drill at low production costs.

Claims (1)

(6) has at its lower part supports (II) where ^{V d} ° ° ^VÓhou MC (10) formed onto the housing (15) »Oion ^{U sv coaxially} ° výstuprovině DICI (12) ě.Mony (1) přlčemJ (1'rj ^'KO ^' to ^{V 'raft' 'E'} to the scored line (14) formed ««. _x ° is ^{perpendicular to the} prism (13) and on the displaceable. _{(2) <íablony (1).}