RU1830316C - Tap wrench - Google Patents

Abstract

Use: for cutting external and internal threads. The inventive screwdriver comprises an oval housing 1, a handle 2 rigidly connected to it, a threaded handle 3 with a freely rotating tip 4. The handle 3 is installed at an acute angle to the base of the housing 1. For cutting threads by counters, a removable element is installed in the housing 1 fasteners for taps, consisting of a cracker 5 mounted on the base of the housing and a movable insert 6. On the inner surface of the cracker 5 there are made a prismatic groove and guides into which the insert 6 is inserted to move and the insert 6 form a tap fixation assembly in the housing 1 of the collar. When attaching the tap, the insert 6 takes the shank to the required size and, by turning the threaded handle 3, bring the tip 4 to the stop in the recess of the insert 6 and clamp the tap. 2 ill. 2 о С сЈ

Description

The invention relates to metalworking, in particular to a bench fitting tool.

The purpose of the invention is to expand the scope of use of the winder by allowing it to be fixed in one tool body for cutting external and internal threads.

Figure 1 presents a General view of the winch; figure 2 - cross section aa in fig. 1.

The gate consists of an oval tapering housing 1, a handle 2 rigidly connected to it, and a threaded handle 3, screwed into the threaded hole of the housing at an acute angle to its base and provided with a freely rotating tip 4 in contact with a freely rotating tip 4 in contact with the die or a removable (fixed) fastening element for taps mounted on the base of the housing, consisting of a cracker 5 and a movable insert 6, stuck under the action of the threaded handle 3 between the inner side surfaces and housing. A prismatic groove and guides are made on the inner surface of the crack 5;

When tapping a female thread with a tap, the knob is used as follows.

The tap fastening mechanism is inserted into the valve body, with the movable element insert 6 with its lateral protrusions entering the guide grooves 5 and forming a tap fixation unit with its inner end surface, and the entire tap fastening element is located on the inner steps 7 of the valve body . The shank 8 of the tap of the required size is inserted into the gap between the cracker 5 and the liner 6 of the tap fastener element, spaced apart by the corresponding square size of the tap shank.

By rotating the threaded handle 3, its tip 4 is brought into the recess of the insert 6 of the fastening element as far as it will go. In this case, the tap is fixed in the mount, and the mechanism itself wedges between the narrowing

sides of the housing 1. To change the tap or remove the fastening mechanism, it is sufficient to unscrew the threaded handle 3 by 1-2 turns.

Formulas of the invention

A gate containing a body of oval tapering shape, the inner surface of which is made with an angle of rise, and a handle mounted with the possibility

rotation in the opening of the housing at an angle to the base of the housing, characterized in that. that, in order to expand technological capabilities by providing the possibility of fixing in one case

a tool for cutting external and internal threads, the collar is equipped with a removable tap fastening element, made in the form of a cracker mounted on the base of the body, on the inside.

the surface of which has a prismatic groove and guides, and a liner placed on the guides of the cracker with the ability to move. one end of which is designed to interact

with a handle, and on the other end of the insert a prismatic groove is made, and the angle of elevation of the outer surface of the crack corresponds to the angle of elevation of the inner surface of the housing.

Aa

4

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FIG. 2