IMPROVING THE AUTOMATIC LUBRICATION SYSTEM AND ANALYZING THE ECONOMIC COMPARISON BETWEEN THE AUTOMATIC OIL LUBRICATION SYSTEM AND THE AUTOMATIC GREASE LUBRICATION SYSTEM IN CNC MILLING MACHINE FOR ALUMINUM PARTS MANUFACTURER

Abstract

The objective of this paper was to 1) Improve Automatic Lubrication Systems, and
2) Analyze the economic viability of Automatic Lubrication Systems, specifically the Brother TC S2D CNC model, located in an aluminum parts manufacturer at Amata Nakorn Industrial Estate, Chonburi Province. Studied the current issues related to the automatic lubricating oil system in the CNC milling machines within the factory premises. Investigated the details of the existing automatic lubricating oil system. The upgrade from the old automatic oil lubrication system to an automatic grease lubrication system to protected and extended the life of the coolant system. The study involved analyzing the root causes of issues using the 5M method (Man, Measurement, Machine, Method and Material). Engineering Economic Analysis was employed to calculate the payback period and internal rate of return (IRR). The study concluded that the automatic oil lubrication system incurred an annual maintenance cost of 58,626 Baht. After implementing the upgrade to an automatic grease lubrication system with an installation cost of 55,000 Baht and a lifespan of 10 years, the maintenance cost was reduced to 33,252 Baht per year. The internal rate of return (IRR) for this improvement was 60.41%, and the payback period was 1.64 years.