Tula, Tula, Russian Federation
Tula, Tula, Russian Federation
It is established that cutting with gear-cutting and thread-cutting tools is not free that results in the increase of loading upon tool tips and their quick wear. The layers of metal cut are subjected to considerable shear deformation and also to other kinds of deformation. In this connection the wear character of a tool and its properties will change. There is considered a process of chip removal by trapezoidal and triangular cutters (as in case of metal cutting off with teeth of a hob may be used not three but two tool tips) and the impact of a cutting face profile angle upon a shear deformation degree is also considered. There are shown analytical dependences for the definition of angles of a chip flow, a relative shear, a deformation degree of a shear and a value of tangential stresses in the cutting area taking into account the influence of the strength of material machined, width and thickness of a layer cut and a friction factor. The dependences are checked up at cutting with a trapezoidal cutter.
profile cutter, shear deformation, angle of chip flow.
1. Volkov, D.P., Malikov, A.A., Yamnikov, A.S. Multiple-thread Screw Lug Shaping on Press Mandrel: monograph. -Tula: Publishing House of TulSU. 2016. - pp. 141.
2. Yamnikov, A.S., Chuprikov, A.O., Kharkov, A.I. Tool Life Increase at Threading Strengthened Buttress Thread on High-strength Blanks // -STIN. - 2015. - №6. - pp. 17-21.
3. Yamkikov, A.S., Chuprikov, A.O., Kharkov, A.I. Reasons for uneven wear of thread chasers on buttress profile side // Proceedings of the XV-th ASTC Mechanics for the XXI-st Century. 2016. №15. BrSU, Bratsk. pp. 13-18.
4. A.S. Yamnikov and A.O. Chuprikov. Chucks for Thin - Walled Blanks / ISSN 1068-798X, Russian Engineering Research. Vol. 35 No. 11, 2015. pp. 838-840.
5. A.S. Yamnikov, A.O. Chuprikov and A. I. Khar’kov. Extending Tool Life in Buttress-Thread Cutting on High-Strength Blanks / ISSN 1068-798X, Russian Engineering Research, 2015, Vol. 35, No. 12, pp. 953-956.
6. Yamnikov, A.S., Yamnikova, O.A. Experimental definition of cutting force at thread milling // Proceedings of Tula State University. Engineering Sciences. - 2015. - № 1. - pp. 82-93.
7. Yamnikov, A.S., Chuprikov, A.O., Kharkov, A.I. Face angle impact upon chip shrinkage at high-strength steels // Aerospace Engineering, Science Intensive Technologies and Innovations 2016. Proceedings of the XVII-th All-Russian ST Conf. (November 17-18, 2016 Perm). PNIPU. pp. 79-82.
8. Yamnikov, A.S., Volkov, D.P. Engineering support of screw press mandrels // Bulletin of Mechanical Engineering. -2016. - №3. - pp. 55-58.
9. Yamnikov, A.S., Volkov, D.P. Manufacturing screw projections on punch stamp // Fundamental and Applied Problems of Engineering and Techniques. 2011. - № 4/3 (288). - pp. 99-104.
10. Volkov, D.P., Yamnikov, A.S. Complex technology for manufacturing screw press mandrels // Proceedings of TulaSU. Engineering Sciences. Edition 11: in 2 Parts. - Tula: Publishing House of TulaSU, 2012. Part 1. - pp. 292-298.
