Influence of the Clearances in the Stamping Device upon the Burrs Resulted on the Stamped Bearing Cages Windows

Abstract

The sheet metal bearing cages quality obtained through punching is influenced by a variety of factors related to the punching mechanism construction, to its adjustment onto the press and also to the technological parameters of the punching process itself. This paper refers to an experimental research study applied to a real industrial environment, which analyzes the sheet metal bearing cages obtained through punching. The paper informs about the main results which were obtained during researches regarding the influence of clearances between the active parts of the punching mechanism upon the dimensions of the punched bearing cages windows burrs. The study presents also some information about results interpretation and several related conclusions.

An overview of possibilities for CAM machining

“…Modern CAM software solutions allow multiple sequences of different projects thus making it possible for a project to be let's say processed as other is being programmed [6]. On the other hand a management window allows multiple machining strategies to be part of the same job listed according to the programmer needs.…”

An Optimized Methodology for Process Quality Analysis and Monitoring Activities in Case of Sheet Metal Bearing Cages Stamping

“…2. The systemic structure of the stamping process of sheet metal cage windows from RRORB2R [5] 184 Engineering Solutions and Technologies in Manufacturing -The blank zone (zSMF) -represents the area from within the part's surface that has not yet undergone through the stamping procedure of the cage windows. The parameters that are correspondent to this area are describing the product ment for machining, being input parameters as follows: o parameters that are characteristic to dimensional and form related precision of the blank; o the cage's material thickness; o initial roughness of the cage surface (it is being appreciated by means of the roughness parameter R a ).…”

“…The proposed systemic approach of the stamping process shown in Fig. 2 will allow a easier identification of factors that may influence the quality and precision of stamped sheet metal cage windows, [5].…”

“…Industrial manufacturers are producing different types of spherical roller bearings with two rows of symmetrical rollers, built with brass or sheet metal cages, as presented in Fig. 1, [3].…”

“…This case study presents steel window-type cages for spherical roller bearings with two rows of symmetrical rollers (RRORB2R) which are passed through four cold forming technological operations: sheet metal cutting in strips, steel cage's primarily shape obtained by means of one blanking-drawing operation, punching the cage's bottom and then calibrate it as part of the same operation followed by simultaneous punching and calibration of cage windows, [5].…”