SU1237367A1 - Device for retaining a tool - Google Patents

Description

This invention relates to a machine tool industry and can be used in machine tools with automatic tool change.

The purpose of the invention is to increase the reliability of the device by eliminating the possibility of breakage by supplying a signal to the machine control system when the retaining lugs do not come out of the grooves of the tool mandrel during its change in the machine spindle.

Figure 1 shows the device, a general view; figure 2 - view And figure 1.

The device includes a housing, for example, a tool magazine with radius grooves made therein, to cover the collet 2 of the tool holder 3. On the flat springs 4, there are fixing protrusions 5 with bevels designed to interact with the collar of the tool mandrel. the grooves are mounted with the possibility of radial movement of the cover 6, on which the screens 7 are fixed, which are intended to interoperate. action with the sensor 8 mounted on the fixed part of the beacon in the area of the spindle 9 and included in the machine control system.

The covers 6 are rigidly connected to the flat springs 4 by means of the sleeves 10 and screws 11. The sleeves 10 are placed in through-slots 12, made in the magazine case, and are spring-loaded

body housing springs 13 in the direction from the grooves. Before gripping the next tool with mandrel 3, the spindle 9 with a free conical hole for the shank of the tool holder moves along direction B. When mating the conical shank of the mandrel with the spindle hole, the front keys 14 of the spindle 9 insert the locking lugs 5 placed in the grooves of the collar with a tool " mandrel mandrel due to the rotation of the flat springs 4 and occupy them. place in the slots of the collar mandrel. Then the spindle 9 makes the mandrel 3 of the groove 1 store in the direction B.

As a result, the CNC spindle 9 can not reach the desired position and its keys 14 are not completely displaced from the grooves of the mandrel, fixing the projections 5. Then, when the command to remove the mandrel 3 comes out of the device in direction B together It begins to move and kryshka 6, associated with the locking protrusions 5 through the sleeve 10 and the flat spring 4. Installed on the kryshka screen 7 moves relative to the sensor 8, which gives to the control system with the machine a signal about the emergency condition arising in process tool change. After release of the mandrel from the device, the spring 13 returns everything to its original position.

Editor V.Kovtun

Fmg

Compiled by A.Sapenok Tehred L. Serdyukova

Order 3232/14 Circulation 826 Subscription

VNIIPI State Committee

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

Production

printing company, Uzhgorod, Projecto st., 4

Proofreader M.Maksimishinets

Claims (1)

DEVICE FOR FIXING THE TOOL, mainly in the tool store of a multi-operational machine, comprising a housing with radius recesses intended to cover the tool-bearing mandrel, and locking protrusions with bevels, made on rotary elements spring-loaded relative to the body, for interacting with bevels and the tool-tool collar, mating with the grooves made on the shoulder of the mandrel, and the interaction with the end keys on the spindle of the machine, with the exception of the fact that, with the whole In order to increase the reliability of the device, the rotary elements are made in the form of flat springs, while the device is equipped with lids mounted on the housing at each recess with the possibility of moving in a radial direction and screens mounted on them, designed to interact with a sensor mounted on a fixed part of the machine in the spindle area included in the control system of the machine, and the lid is rigidly connected with flat springs by means of bushings inserted into the device, placed in through grooves, nennyh in the housing and spring-loaded relative to the housing in a direction away from the recesses. _n „^ and .... 1237367 '1237367 ϊ