RU194889U1 - Device for cleaning internal threads - Google Patents

Abstract

The utility model relates to the field of metalworking and can be used to clean threaded holes. A device for cleaning internal threads includes a shank with a fixation point for the rotation amplifier, intake and gauge parts with chip grooves at one of the ends of the shank. The fixation point is made in the form of a hole perpendicular to the shank for the rotation amplifier, made in the form of a universal cylindrical handle. The second end of the shank is equipped with a needle pointed at the end and bent at an angle to the axis of the shank to enter the corresponding hole and clean its thread. The proposed device for cleaning the internal thread allows you to clean the corresponding thread with one tool, despite the presence of large and solid particles in it, and also make inversion and flipping of the device with one universal rotation amplifier.

Description

The proposal relates to the field of metalworking and can be used to clean threaded holes.

Also known is a tap with teeth of direct and reverse cutting at each feather (patent RU No. 2261783, IPC B23G 5/06, published on 10/10/2005 in Bull. No. 28), the cutting edges of which are located at the same level, and the rear surface of the teeth has a symmetrical shape relative to the middle of the pen and is made at the edges of the pen of a cylindrical shape in the form of a ribbon with a transition to a concave surface, and the depth of the concave surface in the middle of the pen (h) is determined by the dependence:

h = (w / 2 s) tgα,

where in is the width of the pen;

C is the width of the cylindrical ribbon;

α is the rear angle;

and the profile angle of the chip grooves has the shape of an obtuse angle with a radius at the apex and forms a negative rake angle.

The disadvantages of this tap are the complexity of the design, and the high cost of manufacture due to the complexity of the design of the teeth themselves.

The closest in technical essence is a tap for cleaning threaded holes (patent for PM RU No. 78719, IPC B23G 5/06, published on December 10, 2008 in Bull. No. 34), containing the interfaced, calibrating parts with chip grooves and a shank moreover, in the center of the chip grooves, radial slots are made along the entire length of the intake and calibrating parts, interconnected along the axis of the tap to form a channel.

The disadvantages of both taps are the impossibility of cleaning the thread without additional tools with large and hard particles (including rust), which, when cleaning the thread, can lead to destruction of the thread itself, and the need to use a wrench for each thread diameter for turning the tap, which requires the additional presence of several wrenches when working with different sizes and complicates or requires additional workers due to the large total weight.

The technical task of the proposed utility model is to create a device design for cleaning the internal thread, which allows cleaning the corresponding thread with one tool, despite the presence of large and solid particles in it, as well as invert and turn the device with one universal rotation amplifier.

The technical problem is solved by a device for cleaning the internal thread, including a shank with a place to fix the rotation amplifier, intake and gauge parts with chip grooves on one of the ends of the shank.

New is that the fixation point is made in the form of a hole perpendicular to the shank of the rotation amplifier, made in the form of a universal cylindrical handle, the second end of the shank is equipped with a needle pointed at the end and bent at an angle to the axis of the shank to enter the corresponding hole and clean its thread.

In FIG. 1 shows a device with a partial section.

In FIG. 2 shows a section AA of FIG. 1.

A device for cleaning the internal thread includes a shank 1 (Fig. 1) with a fixation point 2 of the rotation amplifier 3, an intake 4 and a gauge 5 parts with chip grooves 6 (Fig. 2) at one of the ends of the shank 1 (Fig. 1). The fixation point 2 is made in the form of a hole perpendicular to the shank 1 for a rotation amplifier 3, made in the form of a universal cylindrical handle (shown conditionally). The second end of the shank 1 is equipped with a needle 8 pointed at the end and bent at an angle to the axis 7 of the shank 1 to enter the corresponding hole and clean its thread (not shown).

The device operates as follows.

If necessary, clean the internal thread, for example, valves, valves, couplings and / or the like. (not shown) are initially cleaned with a needle 8, removing large solid particles and / or rust. Since the pointed end of the needle 8 is located at an angle to the axis 7 of the shank 1, it is also convenient to use the device to clean the threads in deep holes by inserting the needle into the hole and holding the shank 1. After preliminary cleaning, the device is turned over and screwed into the thread being cleaned 4 and calibrating 5 parts of the device. To increase the torque, a rotation booster 3 (cylindrical handle) is inserted into the fixation point 2 (shank hole 1), with which a fence 4 and a gauge 5 parts are screwed over the entire length of the thread being cleaned. At the same time, the chips and dirt from the thread are collected in the chip grooves 6 (Fig. 2) and removed from the hole by unscrewing the intake 4 (Fig. 1) and calibrating 5 parts from the hole, finally cleaning the thread for further use (screwing equipment or pipes from the outside thread into it). Since the shank 1 is additionally equipped with a needle 8, it is not necessary to additionally carry a similar tool. The presence of holes 2 in the shank 1 for a universal cylindrical handle 3, which is suitable for all similar devices, allows you to not wear several special rotation amplifiers.

The proposed device for cleaning the internal thread allows you to clean the corresponding thread with a single tool, despite the presence of large and solid particles in it, as well as to turn and turn the device with one universal rotation amplifier.

Claims (1)

A device for cleaning the internal thread of a hole, comprising a shank with a place to fix the rotation amplifier, an intake and gauge parts with chip grooves at one of the ends of the shank, characterized in that it is equipped with a needle pointed at the end and bent at an angle to the axis of the shank to enter the said hole and cleaning its thread located on the second end of the shank, while the fixation point is made in the form of a hole perpendicular to the shank for the rotation amplifier, made in the form of a cylindrical handle.

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