SU1360925A1 - Floating chuck for cutting thread - Google Patents

Abstract

The invention relates to mechanical engineering and can be used for threading and reaming holes. The purpose of the invention is to improve the accuracy of the cut thread, which is achieved by reducing the frictional forces between the body and the tap holder. The housing 1 is mounted on the shank 2. In the bore of the housing 1, the pin holder 16 is mounted with axial stirring, swinging and swinging. On axis 20, perpendicular to the axis of the baler 16, ball bearings 17 are installed, which cooperate with three longitudinal slots . 3 il. (L with a: about with to :) cd 21

Description

The invention relates to mechanical engineering and can be used for threading and deploying holes.

The purpose of the invention is to improve the accuracy of the cut thread, which is achieved by reducing the frictional forces between the case and the taper holder.

FIG. 1 shows the proposed cartridge, a general view; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. one.

The cartridge consists of body 1, tail 2, two radial bearings 3, thrust bearing 4, liner 5, bushings 6, balls 7, springs 8, rings 9 and 10, cup 11, pin 12, nuts 13, balls 14, thrust bearing 15, rolling rod 16, radial ball bearings 17, groove 18, P1arikov 19, axles 20, quick-release chuck 21.

The housing 1 is mounted on a shank 2 on two radial 3 and one thrust 4 ball bearings, which are closed by a sleeve 5. Also, a sleeve 6 is mounted on the shank 2, serving as a guide for the balls 7 and springs 8, from the lateral displacement the sleeve 6 holds the collar 9 and 10. A glass 11 serving to adjust the degree of compression of the springs 8 depending on the diameter and pitch of the thread being cut prevents P1TIFT 12 from turning relative to the housing 1. The nut 13 is to preload the glass 11 and two glasses 14 located between the glass. m 11 and nut 13 serve for its st Boryeong. The thrust bearing 15 is installed to reduce friction between the cup 11 and the nut 13, which makes it possible to easily adjust the torque. The movable tap holder 16 in case 1

It is located on three radial ball bearings 17 along longitudinal grooves 18, made at an angle of 120 °, which makes it possible to evenly distribute the load on the bearings 17 and center the movable tap holder 16 relative to the longitudinal axis. Spring-loaded balls 19, located in axes 20, serve to reduce friction when moving the tamper holder 16 to its original position. The tap holder 16 is equipped with a quick-release chuck 21 with the possibility of installing a cutting tool in it (a tap, a lining, a sweep).

The cartridge works as follows.

Shank 2 is inserted into the tailstock quill. The tap holder 16 when threading is moved relative to the housing 1 along the longitudinal grooves 18 on the bearing holders 17. The tailstock of the machine is fixed in place. Thread cutting takes place under conditions of self-hitting of the tool.

Claims (1)

Invention Formula A floating cartridge for threading, in the cylindrical bore of the casing of which the tap holder is mounted with the possibility of axial movement and swing, characterized in that, in order to improve the accuracy of the threading, my cartridge it is equipped with three ball bearings on the axes installed in the tap holder non-perpendicular to its axis, while in the cylindrical bore of the case evenly circumferentially three longitudinal grooves are designed to interact with ball bearings. BB / J7 20 FIG. 2 Editor G. Gerber Order 5781/17 Compiled by A. Kli.mov Tehchred I. VeresKorrektor .M. Sharoshi Circulation 970 Subscription VNIIPI State Committee of the USSR on the Deeds of Inventions and Discoveries 1 13035, Moscow, ZH-35, Raushsk Mab., 4/5 11 |) () from a graphic graphical outline, Uzhgorod, ul. Project, 4 Fig.Z