<title>The flexible grinding technology based on the electric current control</title>

Abstract

A flexible grinding technology based on the electric current control is presented to resolve the problem of low rigidity of PCB during grinding, the thickness of which varies from 0.1mm up to 3.5 mm. The comparative results between the real-time current and the setting current in the process of grinding control the frequency and the number of servo pulse, and then the servo motor adjusts the grinding depth of brushing roller at several different rotational speeds,, namely, realizing the constant grinding force during grinding. The results show that the PCB can be grinded efficiently and accurately by means of the flexible grinding technology based on the electric current control.

Study on Online Detecting System for CNC Grinding Machine

“…The choice is based on the structure characteristics of this five-axis CNC grinding machine shown in fig. 1, the geometrical characteristics of the indexable insert and requirement of grinding technology [3].…”

“…In order to achieve efficient and accurate automatic online detection of indexable insert, the online automatic detecting module should be developed, which will enable us to complete the insert machining and detecting on the same machine and avoid multiple clamping, repetitive error and long auxiliary time, etc [1][2] [3]. The online detecting can be prior to grinding, in this way, machine can figures out the difference between the semifinished and the end product and automatically makes corresponding adjustment of grinding allowance to get better dimensions.…”