Topic
Roller burnishing
About: Roller burnishing is a research topic. Over the lifetime, 395 publications have been published within this topic receiving 3322 citations.
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02 Jul 2019
TL;DR: In this article, the authors present the technology used for straightening large-dimension shafts through irregular burnishing, which is performed on part of the cylindrical surface while the opposite surface is not burnished.
Abstract: This article presents the technology used for straightening large-dimension shafts through irregular burnishing. Irregular burnishing is performed on part of the cylindrical surface while the opposite surface is not burnished. The aim of straightening technology is to introduce squeezing stresses on the shaft surface, which cause the straightening and the increase in fatigue durability of this area. The significant parameters in the process of shaft straightening include: the depth δ of the plastically deformed surface, which determines the size of the squeezing stresses introduced in the surface layer and the length h of the burnished surface. This article presents the calculation method for the depth δ of a surface that is plastically deformed in the process of burnishing, as well as its experimental verification. The numerical modelling of roller burnishing has been carried out using the finite element-based MSC. Marc program. The method for the identification of the length of the burnished surface for straightening a shaft with a curvature f is described. The methodology is used to straighten a large-dimension shaft with a diameter of 292 mm and length of 3700 mm.
Patent•
08 May 2020
TL;DR: In this article, a roller burnishing method for surface roughness of a ball head of an oil pump shaft was proposed, which reduced the probability of scratches and bumps caused by traditional methods.
Abstract: The invention provides a roller burnishing method for surface roughness of a ball head of an oil pump shaft. The roller burnishing method comprises the following steps of: step one. adding a brown aluminum oxide ball abrasive with the diameter of 12, a first brightener and first roll polishing liquid to a first vibrating burnisher; putting a workpiece, wherein the roll polishing time is 17-18 hours, and the rotation speed of the abrasive is 4-6 revolutions/min; and step two. adding a turmeric abrasive with the diameter of 5, a turmeric abrasive with the diameter of 6, a white high-alumina porcelain abrasive with the diameter of 8 and a white high-alumina porcelain abrasive with the diameter of 10 to a second vibrating burnisher, wherein the mass fractions of the four abrasives are 10 parts, 10 parts, 20-30 parts, and 20 parts in sequence; adding a second brightener and second roll polishing liquid; and putting the workpiece, wherein the roll polishing time 2.5 to 3 hours, and the rotation speed of the abrasives is 4-6 revolutions/min. The roller burnishing method can realize the batch processing and improve the efficiency. The outer diameter, knurling, roughness and other technicalparameters of the oil pump shaft can be effectively controlled. The probability of scratches and bumps caused by traditional methods is reduced. The roughness Rz value is greatly reduced; and the technical parameters of the workpiece are improved.
01 Jan 2018
TL;DR: In this paper, a finite element analysis is done with the help of ANSYS software to analyse the stresses developed on the workpiece surface and the total deformation in workpiece.
Abstract: Burnishing is a super-finishing process which plastically deforms the surface non-uniformities to give a superior surface finish. In this process, the tool applies pressure over workpiece surface and this creates compressive stresses. To analyse these stresses the finite element analysis is done with the help of ANSYS software. The stresses developed on the workpiece surface and the total deformation in workpiece is found using this software.
Patent•
10 Jan 1992
TL;DR: In this article, the foot of a terminal is surfaced by machining and/or roller burnishing, in order to remove the traces of parting lines (junction planes) resulting from the method of manufacture.
Abstract: The method of manufacture consists in surfacing the foot (9) of the terminal by machining and/or roller burnishing, in order to remove the traces of parting lines (junction planes) resulting from the method of manufacture. The external frustoconical part (7) and the internal orifice (5) are shaped, before machining, by a punching (closed-die forging) or stamping operation carried out on a terminal blank obtained by casting under gravity, the dimensions of which are close to the final dimensions.
Patent•
21 Jan 2015
TL;DR: In this paper, a vertical skiving and roller burnishing machine tool is described, where a spindle is vertically arranged on the machine body and the upper end of the spindle has a cutter bar used for installation of a cutting tool.
Abstract: The invention discloses a vertical skiving and roller burnishing machine tool. The vertical skiving and roller burnishing machine tool comprises a machine body and a hydraulic station used for providing hydraulic power. A control console is arranged on the machine body. A spindle is vertically arranged on the machine body. The upper end of the spindle is in connection and transmission with a spindle motor mounted on a spindle motor support. The lower end of the spindle is provided with a cutter bar used for installation of a cutting tool. The spindle motor support is arranged on lead screws in a vertical moving mode, wherein the lead screws are vertically arranged in parallel. The lead screws are in connection and transmission with a lifting motor. The control console is in control connection with the spindle motor and the lifting motor. A cooling device mainly composed of a pressure pump, a delivery pipe and an oil feeder is arranged on the machine body. The machine body is further provided with a scrap removing mechanism. The vertical skiving and roller burnishing machine tool has the advantages that the structure is reasonable; the machine tool is of a vertical structure and is applicable to machining of deep holes; since the machine body is provided with the cooling device and the scrap removing mechanism, workpieces can be effectively cooled and machined in the machining process, and scraps generated in the machining process can be removed in time.