SU1316749A1 - Appliance for a lathe - Google Patents

Abstract

The invention relates to mechanical engineering and can be used in lathes. The aim of the invention is to increase the productivity and durability of the cutting tool by reducing cutting forces. The device contains a grooved rolling roller 9, which removes the rotational movement from the workpiece and transfers it to the cutting tool 8 through a spring-loaded variator 5, having a support in the holder 1 and installed with the possibility of swinging relative to the latter, and the input shaft of the variator 5 is associated with roller 9, and the output - with a cutting tool 8. 3 Il. (L 00 about with ipve.f

Description

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The invention relates to mechanical engineering and can be used in lathes. The purpose of the invention is to increase the productivity and durability of the cutting tool by reducing cutting forces.

Fig. 1 shows the proposed device, a general view of Fig. 2, view A in Fig. 1, Fig. 3 shows a diagram of the position and interaction of the tool with the workpiece.

The attachment to the lathe contains a holder 1 with a wall 3 attached to it by means of screws 2, which together with the holder 1 forms a fork. Bearings 4 are placed in the wall 3, in which the output shaft of the variator 5 is located, at the other end of the shaft with a washer 6 and nut 7 a tool (disc or cutter) 8 is fixed. A cut-off roller 9 is mounted on the input shaft of the variator 5, also fixed washers and nuts. In the cover of the variator 5, the column 10 is fixed, sliding along the groove 11 of the spring 12 and secured by a washer 13 and nut 14. Column 10 prevents the variator 5 from disconnecting from the spring 12. The other end of the spring 12 is fixed in the holder 1 by screw 15. The spring can be made in like a torsion spring and located on the output shaft of the variator. On the case of the variator 5, the knob 16 is also mounted, which provides for the regulation of the speed of rotation of the cutting tool by changing the gear ratio.

The device works as follows.

The fixture mounted in the tool holder is brought to the rotating workpiece. The roller 9 is in contact with the part. Vra92

The cutting removed by the roller 9 from the part is transformed in the variator 5 and transferred to the cutting tool 8, which performs the cutting process at a cutting speed that combines the rotational speeds of the workpiece and the cutting tool, the vectors of which are directed towards each other. Under the action of the repulsive force acting on the rolling roller 9 on the part of the workpiece, the body of the variator 5 is deflected towards the tool holder, turning in

bearings 4 and deform the spring 12, which thereby more strongly presses the roller 9 to the part. At the end of the cutting process, the fixture is retracted to the original

the position, the spring 12 is rectified, returning the case of the variator 5 also to its original position.

The application of the proposed device allows to increase the productivity and durability of the cutting tool.

Claims (1)

Invention Formula A device for a lathe containing a holder associated with a radial movement mechanism and a carrier axis with a cutting tool, characterized in that in order to improve the performance and durability of the cutting tool, it is equipped with a rolling roller designed to interact with the workpiece and a spring-loaded variator that is supported in the stand and installed with the possibility of swing relative to the latter, the input shaft of the variator connected to the roller, and the output shaft - with a cutting tool. D-U1 FI.2 nuf /. srig.Z Editor M. Bandura Compiled by G. Barinov Tehred M. Khodanych Order 2382/9 Circulation 975 Subscription VNIIPI USSR State Committee by. Inventions and discoveries 113035, Moscow, Raushsk nab., d, 4/5 Production and printing company, Uzhgorod, Projecto st., 4 Proofreader M. Pojo