SU361059A1 - - Google Patents

Description

DEVICE FOR TREATMENT OF SPIRAL CANVAS

one

The invention relates to the production of tools and can be used, for example, when grinding carbide burrs with spiral grooves using the deep grinding method.

Tools for forced grinding of spiral grooves are known, in which the tool being sharpened, along with longitudinal mixing, is given uniform rotation around its own axis by means of a rolling roller with steel tape.

The disadvantage of such devices is that they can only be used when grinding spiral grooves covering the cylindrical body of the tool; with the spherical shape of the tool, these devices are unacceptable.

The proposed device allows grinding of grooves covering a body with spherical surfaces, and can also be used in processing cylindrical surfaces. The kinematic scheme of it is designed in such a way that the tool being machined, for example, a burr, simultaneously receives rotation around its own axis n movement around the axis of the device, which allows the body of the spherical surface to be brought to the grinding wheel.

PRODUCTS

This is achieved by the fact that the device is provided with a drum fixedly mounted in the center of the table and connected to the product spindle by means of a cable running around its outer surface.

The drawing shows the kinematic scheme of the proposed device for processing spiral grooves of products, for example, rotary burrs.

The device is mounted on the machine table. for example, milling or sharpening, and consists of a turntable 1, driven

rotation of a worm gear pair 2 from the handle 3. On the table / there is a spindle 4 with a pulley 5 and a dressing on which the tool 6 is fixed, machined with a grinding wheel 7. In the center of the table / there is a through

the hole in which the stationary drum 8 is placed. The drum is a replaceable part, and the pitch of the spirals being processed depends on its diameter. Cable 9 covers pulley 5, drum 8 and adjustable rollers W

and 11 placed on the turntable and intended to guide and tension the cable 9. The lead screw 12 is mounted on the table Y and serves to adjust the spindle distance from the center of the turntable

the table.

The device works as follows.

As the handle 3 is rotated, the table / rotates and the spindle 4 moves in a circular path. The cable 9 rolls around the stationary drum 8, which causes the pulley 5 to rotate. P1 tool 6 simultaneously rotates around its own axis and moves along a flat circular path. Adjusting the tool to the desired radius of the tool 6 is carried out with a screw 12. When machining the cylindrical surfaces, the cable 9 is removed and the tool is fed to the grinding wheel by rotating the handle 3, which gives movement to the spindle 4, guided

copier installed in this case instead of the pulley 5.

FORD, METE AND ABOUT.

A device for processing spiral grooves of products, for example a burr, containing a rotary table with a screw pair, on which a rotating spindle of the product is movably mounted, characterized in that, in order to process the spiral grooves on various spherical surfaces, it is provided with a drum fixedly mounted in the center table and connected with the spindle. m product by means of a rope running around on its outer surface.

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