Návrh a realizace řídicího systému strojního zařízení pro opracování křemíkových dílů

Abstract

The aim of my thesis is to design and implement the control system of machinery for washing silicon machined parts with a link to enter the end customer and limitations of company. Machinery itself is designed for washing machined silicon parts after production cutting operation. As the main medium for cleaning silicon components is used a compound of two acids (hydrofluoric acid and nitric acid) and demineralized water. The issue of the safety of the device must therefore be consistently fulfilled and assessed part of the equipment during the design of software and hardware, as well as of its implementation. Failure of a safety risk or inconsistent work in the actual implementation could lead at best to a heavy accident at work, with permanent consequences in the worst case, as well as work accident resulting in death. The device for washing silicon parts will consist of monolithic construction with open able covers. Outside of construction will be placed two input 100 l tanks intended for mixing all the necessary ingredients for washing. From these tanks the resulting components will be further distributed into two washing tubs, a small tub with a capacity of 35 l, which is intended for washing small silicon parts and a large tub with a capacity of 350 l, which is intended for washing large silicon parts but also for special internal cleaning of silicon pipes. In the back of the device behind the transparent protective cover will be located NN switchboard and MN switchboard, which will include a set of electrical equipment (elements) for the management and protection of machinery. All controls and visualization will be placed in front of the device because the front part of the device will be located in a clean place and the back part will be separated by a wall and will be part of a grey area, so the back part will not be accessible to a servicing of the device. The result of this thesis is therefore appropriate product to customer requirements linked to the high level of safety in compliance with all applicable legislation matters.