SU1335381A2 - Arrangement for guiding drills - Google Patents

Abstract

The invention relates to the field of machine tools and can be used in machine tools for drilling deep holes of high precision in cylindrical parts. The aim of the invention is to improve the quality of processing by increasing the accuracy of the relative position of the part relative to the conductor sleeve. To do this, in the base element 1 with the possibility of axial movement of the installation-, the collet 5, which by its axial protrusion 6 is connected with the counter axial projection 7 of the conductor sleeve 3. In the housing 8 in the stepped bore there is a movable pusher 10, which with its end face 1 is pressed to the end 12 of the conductor sleeve 3 under the action of the spring 13. The movement of the conductor sleeve 3 causes the collet 5 to move, the petals of which, in turn, are removed or unclamped, fixing or fixing the workpiece. 1, il. c (L 14)

Description

The invention relates to a machine tool industry, can be used in machine tools for drilling deep holes of high precision in cylindrical parts and is an improvement of the known device according to ed. No. 1126389.

The aim of the invention is to improve the quality of processing by increasing the accuracy of the relative position of the part relative to the conductor sleeve.

The drawing shows the proposed device, the overall appearance.

The device for guiding the drill comprises a base element 1 with an inner, and a clamping cone 2. In the opening of the base element 1, a conductor sleeve 3 with a collar 4 is movably mounted. In the clamping cone 2 a collet 5 is installed, connected by an axial protrusion 6 with a counter axial protrusion 7 , made on the conductor sleeve 3, the Base element 1 is rigidly mounted on the housing 8, in a stepped hole 9 of which the pusher 10 is movably placed, which with its end 11 pushes against the end 12 of the conductor sleeve 3 under the action of the spring 13.

The device works as follows.

The spring 13 presses the movable pusher 10 to the conductor sleeve 3, providing a constant contact on the ends of the pusher and the conductor sleeve. In the absence of the workpiece, the spring 13 moves the pusher 10 and the conductor sleeve 3 in contact in the direction of the clamping cone 2. Simultaneously with the conductor sleeve 3, it moves and is installed in the clamping cone 2 of the collet 5, the petals of which open out due to the elasticity of the collet.

Editor I. Shulla

Compiled by M, Cherkhikh Tehred M. Didyk

Order 4004/13 Circulation 974.

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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When the workpiece is loaded, it is inserted with its cylindrical part into the collet 5 until it stops at the end of the conductor sleeve 3. With further movement of the workpiece under the force of the clamping force directed towards the conductor sleeve, the part presses the last one, moving it and being in contact with it pusher 10 to the right (drawing), compressing the spring 13. The movement of the conductor sleeve 3 for. the account of the axial ridge 7, which is present on it, connected with the axial protrusion 6, made on the collet 5, causes the latter to move inward into the clamping cone 2, during which the petals of the collet are reduced, clamping the workpiece.

Claims (1)

The movement of the workpiece with the conductor sleeve 3 and the collet 5 occurs before jamming the collet into the clamping cone 2 during the final clamping of the workpiece. When removing the clamping force after finishing the treatment, the pusher 10, under the action of the spring 13, pushes the conductor sleeve 3 together with the collet and the workpiece to the left (drawing). The petals of the collet 5 at the same time unclench the processed part. Invention Formula A device for guiding the drill according to autor. No. 1126389, characterized in that, in order to improve the quality of processing by increasing the accuracy of the relative position of the part relative to the conductor sleeve, the device is equipped with an axially displaceable collet in an element associated with the conductor sleeve by connecting a protrusion-groove correspondingly made at the rear end of the collet and around the circumference of the sleeve. five 0 five 0 five Proofreader M. Sharoshi Subscription