GB1367767A - Laser machining of oxide materials - Google Patents

Laser machining of oxide materials

Info

Publication number
GB1367767A
GB1367767A GB6196870A GB6196870A GB1367767A GB 1367767 A GB1367767 A GB 1367767A GB 6196870 A GB6196870 A GB 6196870A GB 6196870 A GB6196870 A GB 6196870A GB 1367767 A GB1367767 A GB 1367767A
Authority
GB
United Kingdom
Prior art keywords
workpiece
laser beam
laser
saddle
lead screw
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB6196870A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GB6196870A priority Critical patent/GB1367767A/en
Publication of GB1367767A publication Critical patent/GB1367767A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/08—Severing cooled glass by fusing, i.e. by melting through the glass
    • C03B33/082—Severing cooled glass by fusing, i.e. by melting through the glass using a focussed radiation beam, e.g. laser
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/0823—Devices involving rotation of the workpiece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/22—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising
    • B28D1/221—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising by thermic methods

Abstract

1367767 Cutting by lasers DEFENCE SECRETARY OF STATE FOR 7 March 1972 [31 Dec 1970] 61968/70 Heading B3V [Also in Divisions B4-B5 and C1] An apparatus for machining oxide material 1 by a carbon dioxide-nitrogen-helium gas laser 9 comprises a mounting 3, 7 for the material 1, an optical system 13, 15, 17 for concentrating the laser radiation on the material 1 and means for controlling the position 19 of the concentrated laser radiation on the material 1. The workpiece may comprise silica, zirconia, alumina, magnesium aluminate spinel, magnesia, alumina porcelain, soda glass and soda-aluminaborosilicate glass. A workpiece of platinum, zinc or a photographic emulsion on a metal plate may also be machined by the laser if the workpiece contains an oxide layer. In one embodiment, a beam from the laser 9 is deflected on to a workpiece 1 by mirrors 13, 15, 17 mounted on a saddle 11 which is coupled to a lead screw 21. The workpiece 1 may be rotated in a chuck 3 and tailstock 7 whilst the saddle 11 is moved by the screw 21 so that the imping- ing laser beam 19 traces a helical path to form, for example, a helical groove in a silica, sintered zirconia or sintered magnesia workpiece. A groove may also be produced in an alumina and spinel workpiece if the area impinged by the laser beam 19 is subsequently abraded. Alternatively, a silica tube may be cut by the laser beam 19 to produce a helical spring. The laser beam may have a diameter of 0À5 or 2 mm. In another embodiment, an apparatus for reproducing a pattern on a workpiece 1 further includes a transparency 41 mounted on a transparent drum 39, which is rotated from the chuck 3 via belt 37 and pulleys 33, 35 and which is internally illuminated by a lamp mounted on an arm 43 attached to the saddle 11. The lines of the transparency 41 are detected by a photo-cell 47 connected by an arm 45 to the saddle 11, whereupon a shutter 23 is opened by a motor 25 to allow the laser beam to impinge on the workpiece 1. When the shutter 23 is closed, the laser beam is deflected into an absorber 27. In another embodiment (Fig. 3, not shown), a flat workpiece (85) is machined on a table (63) which is movable on a bed (61) by a lead screw (69) or a rack and pinion (71, 73). The mirrors 13, 15, 17 are mounted on a mounting (75) which is movable by a lead screw (81) at right angles to the table movement.
GB6196870A 1970-12-31 1970-12-31 Laser machining of oxide materials Expired GB1367767A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB6196870A GB1367767A (en) 1970-12-31 1970-12-31 Laser machining of oxide materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6196870A GB1367767A (en) 1970-12-31 1970-12-31 Laser machining of oxide materials

Publications (1)

Publication Number Publication Date
GB1367767A true GB1367767A (en) 1974-09-25

Family

ID=10487721

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6196870A Expired GB1367767A (en) 1970-12-31 1970-12-31 Laser machining of oxide materials

Country Status (1)

Country Link
GB (1) GB1367767A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0062484A1 (en) * 1981-04-01 1982-10-13 Creative Glassworks International Method of cutting glass with a laser
FR2543433A1 (en) * 1983-03-31 1984-10-05 Cofrec Method and device for tracing a fracture line on the tips of glass phials
GB2151978A (en) * 1983-12-29 1985-07-31 Toshiba Ceramics Co Method of and apparatus for machining a ceramic member
GB2160196A (en) * 1984-06-11 1985-12-18 Gen Electric Co Plc Manufacture of optical components
EP0690028A1 (en) * 1994-06-29 1996-01-03 Machida Endoscope Co., Ltd Process for producing micro lens
ES2306607A1 (en) * 2007-04-19 2008-11-01 Transformados Metalicos Sanroman, S.L. Accessory for laser-cutting tubular profiles

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0062484A1 (en) * 1981-04-01 1982-10-13 Creative Glassworks International Method of cutting glass with a laser
FR2543433A1 (en) * 1983-03-31 1984-10-05 Cofrec Method and device for tracing a fracture line on the tips of glass phials
GB2151978A (en) * 1983-12-29 1985-07-31 Toshiba Ceramics Co Method of and apparatus for machining a ceramic member
GB2160196A (en) * 1984-06-11 1985-12-18 Gen Electric Co Plc Manufacture of optical components
EP0690028A1 (en) * 1994-06-29 1996-01-03 Machida Endoscope Co., Ltd Process for producing micro lens
US5665136A (en) * 1994-06-29 1997-09-09 Machida Endoscope Co., Ltd. Process for producing micro lenses using a laser beam
ES2306607A1 (en) * 2007-04-19 2008-11-01 Transformados Metalicos Sanroman, S.L. Accessory for laser-cutting tubular profiles

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Legal Events

Date Code Title Description
PS Patent sealed