What are the characteristics of deep hole drilling high pressure cooling system

Release time:

2022-05-25

The high-pressure cooling system of deep hole drilling has always been a difficult point in post-mortem machining, and its proportion is undoubtedly essential. At present, in the cutting process, hole processing accounts for about 1/3 of the total processing, and deep hole processing accounts for 40% of hole processing! So, let's understand what are the characteristics of the low-pressure cooling system for deep hole drilling!

　　High pressure cooling system for deep hole drillingIt has always been a difficult point in post-mortem machining. At present, in cutting, hole processing accounts for about 1/3 of the total processing, and deep hole processing accounts for 40% of hole processing! Its proportion is undoubtedly essential. So, let's understand what are the characteristics of the low-pressure cooling system for deep hole drilling!

　　High pressure cooling system for deep hole drillingFeatures:

1. The tool holder is limited by the aperture, which is easy to produce vibration, ripple and taper during cutting, which affects the straightness and surface roughness of the deep hole, with small diameter, large length, poor rigidity and low strength.

2. When drilling and reaming, if the cooling lubricating fluid is not used in a special device, it is not easy to enter the cutting area, reducing the durability of the tool, and it is difficult to remove chips.

In the process of deep hole machining, the cutting situation of the tool cannot be directly observed. Look at the instruments (oil pressure gauge and electric meter) to judge whether the cutting process is normal. You can only listen to the sound of cutting based on work experience, look at the chips, touch the vibration and workpiece temperature with your hands.

4. It is difficult to remove chips. Reliable means must be taken to cut chips, control the length and shape of chips, and prevent smooth removal and chip blockage.

5, increase the tool inside (outside) chip removal device, tool guide and support device and high pressure cooling lubrication device, to ensure that the deep hole in the process of processing smoothly, to achieve the required processing quality.

　　High pressure cooling system for deep hole drillingCommon problems and solutions:

1. Chip bonding: reduce the cutting speed; avoid blade overflow; replace the extreme pressure high cutting fluid to improve the filtration condition; improve the pressure and flow of cutting fluid.

2. Coaxiality difference: adjust the coaxiality of machine tool spindle and drill sleeve; Use appropriate drill sleeve diameter.

3, the cutting speed is too low, the feed is too large or uneven: the appropriate amount of cutting.

4, the tool geometry is not suitable. Change the geometric angle of the cutting edge and the shape of the guide block, and the orifice is flared.

Coaxiality difference: adjust the coaxiality of the machine tool spindle, drill sleeve and support sleeve; use appropriate drill sleeve diameter and replace the drill sleeve with excessive wear in time.

Bit Broken

1, the chip is not good, the chip can not be discharged: change the size of the chip groove, not too long, too shallow; timely detection and replacement of the blade overflow; the use of cutting fluid pressure, flow of the material organization of the uniform workpiece.

2, the feed is too large, too small, uneven: the appropriate amount of cutting.

3. Excessive wear of the drill bit: Replace the drill bit regularly to avoid excessive wear.

4, cutting fluid is not suitable: choose the right cutting fluid, improve filtration.

Low bit life

1, the cutting speed is too high or too low, the feed is too large: the appropriate amount of cutting.

2, the drill is not suitable: replace the tool material; change the position and shape of the guide block.

3, cutting fluid is not suitable: increase the cutting fluid pressure, flow to improve the filtering of cutting fluid. Replace the extreme pressure cutting fluid;.

The above introduction is what are the characteristics of the deep hole drilling high-pressure cooling system, if you need to know more, you can contact us at any time!