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People who have worked in factories and other industries may know the role of large-scale gantry milling, but what this article wants to talk about is what cutting is done in the process of large-scale gantry milling? In fact, the editor has read a lot about the role of cutting, which is very useful for large gantry milling. Therefore, please continue to read, as follows:
Firstly, the lubrication effect: cutting fluid can form a lubricating film on the front and back of the tool to reduce direct contact with the metal surface, reduce friction and adhesion phenomena.
In order to ensure good lubrication, it is required that the cutting fluid can quickly penetrate into the contact interface between the tool and the workpiece or cutting, and form a solid adsorption lubrication film, which will not be damaged under high temperature, high pressure, and severe friction conditions. When the cutting fluid contains oily additives (such as fatty acids, soaps, amines, and other compounds) or extreme pressure additives (such as sulfurized oil, chlorinated paraffin, zinc dialkyl disulfate, and other organic compounds containing sulfur, chlorine, or phosphorus), its lubrication effect is greatly enhanced.
Generally, cutting fluids containing oily additives are only suitable for low-speed and light load situations; Sulfur-containing cutting fluids can withstand high temperatures of around 1000 degrees; Chlorine containing cutting fluid can withstand temperatures of around 600 degrees and has a better ability to reduce friction coefficient than sulfur-containing cutting fluid.
Cooling effect: The cutting fluid can quickly remove cutting heat from the cutting zone, causing a decrease in cutting temperature. The greater the fluidity, thermal conductivity, specific heat capacity and heat of vaporization of cutting fluid, the better the cooling energy. Since the thermal conductivity, specific heat capacity and heat of vaporization of water are higher than those of oil, the cooling effect of water-based cutting fluid is better than that of oil-based cutting fluid. When foam exists in the cutting fluid, the cooling effect will be reduced, So sometimes it is necessary to add a small amount of anti foaming additives (such as dimethyl silicone oil, oleic acid, etc.) to the cutting fluid to improve the cooling effect.
Cleaning and chip removal function: Cutting fluid can timely remove cutting, metal dust, and sand particles that fall off or break off from the grinding wheel from the workpiece, tool (or grinding wheel), to avoid cutting blockage and scratching of the processed surface. This function is particularly important for processes such as grinding and deep hole machining, which requires the cutting fluid to have good fluidity and sufficient flow rate and pressure during use.
Before carrying out our work, many departments provide operators with pre job training, but in fact, it lays the foundation for the safe operation of CNC boring and milling machines. So what issues should we all pay attention to? Let the editor tell everyone. The safety operation technology of its CNC boring and milling machine includes ten points. The specific content is as follows, for reference only.
Before driving, check whether the parameters such as tool compensation, machine zero point, and workpiece zero point are correct. Before processing, it is necessary to check whether the machining program of the CNC boring and milling machine is correct, and conduct a trial run of the machine tool. Cutting can only be carried out after ensuring that lubrication, mechanical, electrical, hydraulic, and digital display systems are functioning properly.
After the CNC boring and milling machine enters the processing operation according to the program, the staff are not allowed to contact the workpiece, cutting tools, and transmission parts, and it is prohibited to transfer or take tools through the rotating parts of the machine tool. When adjusting the machine tool, clamping workpieces, measuring dimensions, and wiping the CNC boring and milling machine, the machine must be stopped.
