deep hole drill bitDetailed discussion

What is a deep hole drill? Deep hole drill is the processing of deep holes. A hole with a ratio of hole depth to diameter greater than 6 is a deep hole. The cutting force of deep hole drilling should be evenly distributed, with good chip removal performance, lubrication and rust prevention, and the hole should be straight. These are all necessary factors for deep hole drilling. The importance of deep hole boring machine I believe you do not have to elaborate, but still want to talk about the correct use of this product, because this product looks very simple, in fact, it is easy to operate in practice. Before starting the deep hole boring machine, check whether the lubricating oil level injected into the sliding table guide rail and the feed spindle is in the middle of the oil level gauge. If the oil level is lower than the lower limit, please add oil in the middle of the oil level gauge.

A lot of heat and iron chips are generated during the processing, and the tool is slender and easy to bend and vibrate. Therefore, the deep hole drill also needs good cooling performance and chip removal performance. If the lack of these two properties, it will produce oil smoke, harmful to the human body, the chip is not smooth, the tool is damaged, and the drill bit wears quickly.

There are many types of deep hole drill bits on the market, the basic formula is the same, but the viscosity is different. In the face of different processing technology, it is necessary to analyze the processing characteristics scientifically and reasonably, and to clarify the mechanism of the three extreme pressure anti-wear agents of chlorine, phosphorus and sulfur in deep hole drilling oil, so as to be able to process deep hole drilling. To avoid weaknesses, accurate use.

　　deep hole drill bitIt is a cutting process, but no traditional cutting is used. In the early stage of deep hole drilling, when the drill bit contacts the workpiece, the pressure of the drill bit reaches about 2000n. This pressure is very high and the temperature rises instantaneously. At this time, the viscosity of the oil is low, the permeability is good, and the cooling effect is good. Chip removal should be smooth; The pressure at the end of processing is about 4000n. If the extreme pressure value of the oil is lower than 4000n or the extreme pressure agent in the oil is released slowly, it will smoke and wear the drill bit. Therefore, the extreme pressure agent should also have low viscosity and high extreme pressure resistance.

The deep hole drill should be adjusted according to the actual diameter of the workpiece to be processed. Generally, the power supply voltage fluctuation value of the deep hole drilling and boring machine should not be greater than 5%, and the voltage and frequency of the machine tool motor nameplate should be consistent with the power supply, otherwise the motor should not start working. In addition, when the spindle V-belt needs to be replaced with a new belt, it needs to have a pre-tightening force to avoid sagging, heating, noise or vibration during work. If such problems are found, the belt should be re-tightened. After one hour of operation, re-tighten the belt to compensate for the belt starting to stretch and slot. Every 40 hours of operation, check the belt tension and re-tighten the belt.

Modern CNC center machining deep hole drilling requires high performancedeep hole drill bitand high pressure cooling system. When deep-hole drilling of materials used in medical devices, such as high-alloy stainless steel, chips are discharged through high pressure to ensure the machining process. Implant machining processes include turning, tapping, deep hole drilling, hexagonal milling, cutting and grinding. If all operations are carried out on a machining center, high-performance cutting oil is required.