Investigation of residual deformations in innovative methods of combined mandrel drilling

Investigated the influence of the nature and microgeometrical parameters influencing surface work tool, as well as the technological lubricant to remain-wide deformation of the hollow cylindrical specimen of a brass brand of LS 59-1.

Influence of the characteristics surface layer of the tool and composition technological lubricant on the coefficient of friction in methods combined mandreling of holes

The influence of the nature and parameters microgeometry of the surface layer tool on the sliding friction coeffi cient in the combined methods opening under the conditions of using metal-coating lubricants, which implement the effect of wear-free friction of Garkunov—Kragelsky, is studied comparatively using the theoretical provisions of the adhesivedeformation theory of friction

Study of effect of technological lubricant type and parameters of tool surface layer on characteristics of multitoothed mandrelling methods of holes

The regularities of the change in the mandrelling forces and the geometric quality parameters of the obtained holes depending on the type of technological lubricant and the parameters of the tool surface layer that implements the scheme of sequential multi-tooth mandrelling are experimentally studied.

The dependence of the performance of the process of finishing vibration processing on the shape of the abrasive tool (granules)

The article presents the results of experimental studies of the influence of polymer abrasive granules shape on the surface roughness formation and metal removal during vibrational finishing and hardening treatment (VFHT). As is known, surface roughness and the amount of metal removal are affected by a number of factors: binder material, material and granularity of the abrasive, technological lubricant-coolant medium (LCM) type, loading mass, initial roughness, etc. Processing was carried out for 120 min on a UVG-4x10 vibrating machine, with a working chamber volume of 10 dm3. Metal removal Q (grams) and surface roughness Ra (μm) were measured using an AD-200 analytical balance and an SJ-210 profilometer. The results presented show that polymer abrasive granules have high cutting ability, the intensity of which depends on the shape of the granules.