Digital-control laser cutting head and method for making same

Abstract

The invention discloses a digital control laser cutter head used in CO2 digital control laser cutter and relative producing method. Wherein, the digital control layer cutter head comprises a connecting tube 1, a glass base box 2, a water cooling element 3, a focusing glass base element 4, a focusing glass 5, an aeration element 6, an adjusting nut 7, a high-strength insulated separating sheath 8, a transition nozzle 9, and a cutting nozzle 10. The inner hole 9-1 of said transition nozzle is in reverse taper shape; the upper and lower parts of water cooling element are integrated annular cooling water channels, while the annular cooling water channel 3-1 is one-time mechanically processed; the main elements as glass base box 2, water cooling element 3, focusing glass base element 4, aeration element 6 and adjusting nut 7 are made from ultrahigh strength rigid duralium LC4. With said invention, the consumed pressure and light energy of digital control laser cutter head is lower and the focusing effect is better. And said invention has better sealing property, thicker cut plate, high plate utilization, high strength, high pressure resistance and high heat conductivity.

Description

1. Technical field [0001] The invention relates to cutting processing equipment and a manufacturing method thereof, in particular to a laser cutting head of a CO2 numerically controlled laser cutting machine and a manufacturing method thereof. 2. Background technology [0002] The CNC laser cutting head is the main part of the advanced cutting processing equipment CO2 CNC laser cutting machine. The existing CNC laser cutting head is mainly composed of main parts such as connecting pipe, mirror holder box, water cooling assembly, focusing mirror holder assembly, focusing lens, ventilation assembly, adjusting nut, high-strength insulating isolation sleeve, transition nozzle, cutting nozzle, etc. The inner hole of the nozzle is straight, and the upper and lower parts of the water-cooling assembly are combined water-cooling kits. The main parts of the laser cutting head are made of LY duralumin. This kind of laser cutting head has the following defects: First, the inner hole of...

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Problems solved by technology

Such a laser cutting head has the following defects: First, the inner hole of the straight transition nozzle increases the loss of air pressure and light energy, the focusing effect is poor, and the focal diameter is large, which affects the cutting accuracy and cutting quality, and reduces the utilization rate of the plate; Second, in the manufacturing method of the water-cooling kit, the cooling water tank and the main body of the kit are manufactured separately, and then combined by silver brazing, which not only has many processing steps, high cost, but also poor sealing, which increases the loss of light energy ; Third, in the material selection design of the laser cutting head, the main component material is LY duralumin, which is difficult to guarantee the requirements of high strength, high pressure resistance and high thermal conductivity of the laser cutting head

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