SU1245419A1 - Method of dressing the rear surface of tap die - Google Patents

Description

The invention 1 (not related to mechanical engineering for the manufacture of taps mainly for difficult-to-cut materials

The purpose of the invention is to increase the durability of the meter by forming flanked sections of the tap profile.

FIG. one; a tap is shown with a flanked tooth profile on the intake part; k (and FIG. 2 is a diagram of the location of the floated sections on each feather: a four-pen tap in the direction of the thread.

The tap 1 - with the flanked profile of the thread has a back surface 2 on the intake part with the right flanked profile on the feathers x 3 and 4 | and with the left flanked profile on the feathers x 5 and 6.

The profile of the cutting edge of the outboard part of each interchangeer has a flange that supports the cutting edge 7 on the rear surface, the right flanked p | cutting edge 8 on feathers 3 and 4 and the left flanked cutting edge 9 on 5 and 6. For tapes with OTHER; With feathers, the flanks alternate in the direction of the thread. Before taking off

nineteen

the flanks are used to sharpen the tap surface, in which the tap and the grinding wheel rotate and move relative to them. Sharpening the tap 1 with the flanked thread thread profile is done by shifing the thread profile to the full height using an additional single thread grinding wheel.

Grinding is carried out by longitudinal movement of the tap along the thread being ground within the length of one feather relative to the grinding wheel, set at an angle equal to the angle of the thread raising and the angle of inclination of the flanked profile. The feed to the depth of grinding is made on each turn of the table by a thread S1 of the grinding machine. The relative movement of the sharpened tap and the grinding wheel is performed on the copier,

During the sharpening process, an intermittent contact occurs, in which the grinding wheel and the tool to be sharpened periodically out of the contact. Sharpening is carried out in many passes with significant longitudinal feeds.

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Editor A, Sabo

Fi & .1

Compiled by C, Lastochkin

Tehred G.Gerber Proofreader N.Pojo

Order 463 & Circulation 1001 Subscription

VNIIPI USSR State Committee

for inventions and discoveries: 113035, Moscow, Zh-35, Raushsk nab, d. 4/5

Production and printing company, Uzhgorod, st. Project, 4

Claims (1)

METHOD OF SHARPENING THE TAPER, in which the tap and grinding wheel are rotated and moved relative to each other, characterized in that, in order to increase the resistance of the tap, a second single-thread grinding wheel designed to form a flank is introduced into the machining, while the circle is informed of rotation and set it under angle equal to the angle of the thread and the angle of inclination of the flank. Figure 1