SU1238899A1 - Device for clamping tool mandrel - Google Patents

Description

I

The invention relates to metal | machining and can be used, for example, when machining on turning, turret and other machines.

The purpose of the invention is to reduce the time for changing the tool by increasing the speed of the clamping mechanism by reducing the angle of rotation of its driving link.

FIG. 1 shows the device., General view, longitudinal section; in fig. 2 is a view A of FIG. },,

The device consists of a housing 1 with a tapered bore 2 under the shank of the inserter mandrel 3. On the case, the clip 4 is installed by means of a threaded connection, in which the ring 5 is installed with the possibility of rotation and fixation. 7. At the end of the ring 5, diametrically arranged grooves 8 are made with walls 9 and 10 beveled to one side. Diametrically keyed grooves are arranged in a cylindrical bore 1I for connecting with a key 12, mounted on the mandrel 3. The keys 12 are made of the projections 13 with

2388992

the beveled surfaces 14 and 15, the counter surfaces of the walls 9 and 10 of the grooves 8. In the housing 1 there are windows 16 designed to pass the height of 5 obtuse 13 into the grooves 8 of the ring 5.

When installing the tool holder with the tool 17 installed in it in the conical bore 2 of the housing, the protrusions 13 pass through about 10 to 16 and are located in the grooves 8 of the ring 5. When the casing 4 is rotated along arrow B of the wall 9, the rings 5 interact with beveled surfaces 14 protrusions 13. At the same time, the conical 15 shank of the tool holder is pulled into the conical socket of the body and is clamped. If it is necessary to change the tool 17, it is pushed out - together with the tool 20 mandrel from the body 1 by turning the yoke 4 in the direction of arrow B. In this case, the walls of 10 slots 8 of the ring 5 interact with the beveled surfaces 15 of the projections 13 of the keys 12.

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In order to ensure simultaneous interaction of the beveled surfaces on the ring and key tabs, the screws 7 are loosened and, turning the ring 5, in the desired position, tighten them.

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Editor I. Dankulich

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Compiled by A. Sapenok

Tehred I.Popovich Proofreader O. Lugova

Order 3332/8. Circulation 1001

VNIIPI USSR State Committee

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

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

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Claims (1)

DEVICE FOR CLAMPING A TOOL TOOL, comprising a housing with a conical hole for the mandrel shank and a cylindrical hole with keyways made in it from opposite sides, designed to * mate with the housing axis Fiz. 1 twine '' ns with dowels, rigidly connected with the mandrel, and the clamping mechanism of the mandrel shank in the conical hole of the housing and its extraction, characterized in that, in order to reduce the time to change the tool, the said mechanism is made in the form of a rotatable and fixing in the holder of the ring with two diametrically located end grooves with walls beveled to one side and protrusions with reciprocal beveled surfaces made on the keys of the mandrel, while windows designed for ode dowels projections into the grooves of the ring, all of said surfaces are bevelled at the same angle with respect to 1 1238899 2