Compact laser machining head
An improved laser-machining head unit for fabric comprising a diagonal mirror assembly with a tubular sleeve extending downward to an internally threaded distal tip. An annular adapter is provided with an externally-threaded male fining at one end and an internally-threaded receptacle at an opposing end. The externally-threaded male fitting of the adapter is adjustably screw-threaded into the internally threaded distal tip of the tubular sleeve. A laser nozzle has a frusto-conical tip and an annular collar Cm attachment to the adapter, the collar being externally threaded and fixedly screw-inserted into the internally-threaded receptacle of the adapter. In addition, there is a gas inlet affixed to the collar of the laser nozzle for introducing gas at a 90-degree angle thereto. The screw-adjustable configuration ensures proper alignment at all times of the lens, the beam and the nozzle aperture, and air stream.
1. A laser-machining head unit, comprising:
a diagonal mirror assembly having a housing with a laser inlet and an orthogonal laser outlet, a reflecting mirror seated inside the housing for directing laser light from said inlet into said outlet;
a tubular sleeve in optical communication with said mirror assembly and extending downward from the outlet of said diagonal mirror assembly to a threaded end; and
a laser nozzle in optical communication with said tubular sleeve and having a screw-threaded cylindrical tubular inlet leading to a frusto-conical tip for directing laser light along a linear path from said inlet onto a workpiece, and
a focusing lens and lens mount inside the laser nozzle;
a tubular adapter screw-threaded at one end and adjustably attached thereby to the threaded end of said tubular sleeve and screw-threaded at another end and adjustably attached thereby to the inlet of said laser nozzle;
a gas inlet to the laser nozzle for introducing gas flow perpendicularly to said linear path onto said focusing lens and lens mount.
2. The laser-machining head unit according to claim 1 , further comprising two focusing lenses seated in the lens mount inside the laser nozzle.
3. The laser-machining head unit according to claim 1 , wherein said laser nozzle is adjustably attached to said tubular sleeve.
4. The laser-machining head unit according to claim 3 , wherein said laser nozzle is adjustably attached to said tubular sleeve by said adapter.
5. The laser-machining head unit according to claim 4 , wherein said adapter is fixedly attached to said laser nozzle and screw-adustably attached to said tubular sleeve for screw-adjustment along said linear path.
6. The laser-machining head unit according to claim 5 wherein said adapter is externally screw-threaded at said other end and screw-threaded thereby into said laser nozzle.
7. The laser-machining head unit according to claim 5 , wherein said adapter is internally screw-threaded at said other end and screw-threaded thereby onto said laser nozzle.
8. The laser-machining head unit according to claim 5 , wherein said adapter is screw-threaded to said laser nozzle by screw-threads having a pitch diameter within a range of from 0.2 mm to 0.8 mm.
9. The laser-machining head unit according to claim 5 , wherein said adapter is screw-threaded to said laser nozzle by screw-threads having a pitch diameter within a range of from 0.2 mm to 0.5 mm.
10. The laser-machining head unit according to claim 4 , wherein said laser nozzle is fixedly attached to said adapter.
11. The laser-machining head unit according to claim 10 , wherein said laser nozzle is fixedly screw-threaded to said adapter.
12. The laser-machining head unit according to claim 5 , wherein a height of said laser nozzle relative to a workpiece may be adjusted by rotating the adapter.
13. A laser-machining head unit, comprising:
a diagonal mirror assembly having a housing with a laser inlet and an orthogonal laser outlet, a reflecting mirror seated inside the housing for directing laser light from said inlet into said outlet;
a tubular sleeve in optical communication with said mirror assembly and extending downward from the outlet of said diagonal mirror assembly to an annular sleeve end configured with adjustment screw threads;
an adapter ring having a first end configured with mating screw threads and adjustably engaged to the screw threads of the annular sleeve end; and
a laser nozzle fixedly attached to an opposing end of said adapter and having an inlet and an interior channel leading to a frusto-conical tip for directing laser light along a linear path from said inlet onto a workpiece
at least one focusing lens and lens mount inside the laser nozzle; and
a gas inlet to the laser nozzle configured to introduce gas flow perpendicular to said linear path.
14. The laser-machining head unit according to claim 13 , comprising a pair of focusing lenses mounted in said laser nozzle.
15. The laser-machining head unit according to claim 14 , wherein said adapter is externally screw-threaded at said other end and screw-threaded thereby into said laser nozzle.
16. The laser-machining head unit according to claim 14 , wherein said adapter is internally screw-threaded at said other end and screw-threaded thereby onto said laser nozzle.
17. The laser-machining head unit according to claim 13 , wherein said at least one focusing lens is adjustably mounted.
18. The laser-machining head unit according to claim 17 , wherein a height of said laser nozzle relative to a workpiece may be adjusted by rotating the adapter.
19. The laser-machining head unit according to claim 13 , wherein said at least one focusing lens consisting of a single focusing lenses seated inside the laser nozzle.