What are the precautions for deep hole drilling high pressure cooling system

Release time:

2022-05-03

What are the difficulties in deep hole processing of deep hole drilling high-pressure cooling system, what are the types of deep hole drill bits, and what should be paid attention to when choosing and selecting deep hole drill bits? The processing methods of the deep hole drilling high-pressure cooling system and the precautions for deep hole processing are there. How many? This article has been introduced, I hope it will help you!

　　High pressure cooling system for deep hole drillingWhat are the difficulties of deep hole processing, what are the types of deep hole drill bits, and what should be paid attention to when choosing and choosing deep hole drill bits? How many processing methods of the high-pressure cooling system of deep hole drilling and precautions for deep hole processing? This article has been introduced, I hope it will help you!

　　.High pressure cooling system for deep hole drillingDeep hole processing difficulties

The tool holder is limited by the aperture, small diameter, large length, poor stiffness, low strength, easy to produce vibration, ripple, taper, but affect the straightness and surface roughness of the deep hole;

When drilling and reaming, if the cooling lubricating fluid cannot be used for special protection devices, it is difficult to send it into the cutting area, reducing the impact on the tool and durability, and chip removal is also difficult;

In deep hole processing, the cutting situation of the tool cannot be directly observed. You can only listen to the cutting sound with work experience, check the chip, hand touch vibration and workpiece temperature, look at the machine (oil pressure gauge, electric meter), and judge whether the cutting process is normal.

Due to the difficulty of chip removal, reliable measures must be taken to break the chips, control the length and shape of the chips, smooth chip removal, and prevent chip blockage;

Add internal (or external) chip removal device, guide support device and high-pressure cooling and lubrication device to meet the smooth progress of deep hole processing and processing quality requirements.

Poor tool heat dissipation conditions, cutting temperature rise, tool durability decline

. Type, scope of use and management and basic working principle of deep hole drill

Deep hole drill is divided into two kinds of discharge piece and internal discharge piece. The discharge piece has a gun body drill bit and an integral alloy deep hole drill bit (which can be divided into cooling hole and no cooling hole);

The internal chip removal is divided into BTA deep hole drill, jet drill and DF system deep hole drill. The type and use management range of deep hole drill bits are shown in the following figure.

Precautions for deep hole drilling high pressure cooling system

(1) deep hole processing operation point: the coaxiality of the center line of the spindle and the tool guide rail, the tool bar support sleeve and the workpiece support sleeve shall meet the requirements. Cutting fluid system must be normal workpiece machining end face should be no center hole. Do not drill on the slope; the shape of the chip should be kept normal to avoid the formation of linear chips; when machining the through hole at high speed, slow down or stop before the drill is about to penetrate to avoid damage to the drill.

(2) deep hole processing and cutting fluid) deep hole processing production process management, a large number of cutting heat is constantly generated, not easy to spread, the need to fully improve the supply capacity of the cutting fluid lubrication system cooling process tool. Generally, 1:100 emulsion or extreme pressure emulsion can be used. Extreme pressure emulsion or high concentration extreme pressure emulsion can be used when high-tech processing method precision and surface work quality or processing and development toughness research materials are required. The change of viscosity of cutting oil sports brand is usually (40(10(20cm 2/s, cutting fluid flow rate is 15(18 m/s; Cutting oil with low viscosity is used at the same time with different diameters; When deep hole processing with high control accuracy is required, the mixing ratio of cutting oil 40% extreme pressure sulfide oil 40% kerosene 20% chlorinated paraffin can be selected. The pressure and flow rate of cutting fluid are closely related to the aperture and processing method, as shown in the figure.) 3) In order to ensure the service life of the tool, use an automatic walking knife.

When the guide parts of the liquid feeder and the movable center bracket are worn, please replace them quickly to avoid affecting the accuracy of the drill bit.

Deep hole processing is a tool-led processing trade area designed for existing technology applications, and many research different industries are involved in deep hole processing.

The above introduction is the deep hole drilling high pressure cooling system pay attention to what? Design diversity. If you need to know more, you can contact us at any time! Our company has many years of experience and is looking forward to your joining us at any time.