B23PMETAL-WORKING NOT OTHERWISE PROVIDED FORCOMBINED OPERATIONSUNIVERSAL MACHINE TOOLS arrangements for copying or controlling B23QThis subclass covers: combinations of work-modifying operations covered by different subclasses of classes B21 - B24; combinations of metal-working operations with non-mechanical treatments of metal not provided for elsewhere, for example in C21D, C22C, C22F or C23.This subclass does not cover non-mechanical operations on non-metallic materials unless such operations are specially mentioned in this subclass;subsidiary operations performed in conjunction with main operations covered by a single subclass, e.g. assembling of parts as an essential feature of a following metal-working operation, since they are not regarded as operations per se.Attention is drawn to the Notes following the title of class B23.In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme. B23P5/00 B23P5/00Setting gems or the like on metal parts, e.g. diamonds on tools B23P6/00Restoring or reconditioning objects straightening or restoring form of sheet metal, metal rods, metal tubes, metal profiles, or specific articles made therefrom B21D1/00, B21D3/00; repairing defective or damaged objects by casting techniques B22D19/10; procedures or apparatus covered by a single other subclass, see the relevant subclass B23P6/002Repairing turbine components, e.g. moving or stationary blades, rotors, B23P6/045 takes precedence B23P6/005using only replacement pieces of a particular form B23P6/007using only additive methods, e.g. build-up welding B23P6/02Pistons or cylinders B23P6/04Repairing fractures or cracked metal parts or products, e.g. castings B23P6/045of turbine components, e.g. moving or stationary blades, rotors, etc. B23P9/00Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings treatment covered by a single other subclass, see the relevant subclass, e.g. B24C, C21D7/00, C22F1/00Features of such surfaces not otherwise provided for, their treatment being unspecified B23P9/02Treating or finishing by applying pressure, e.g. knurling B23P9/04 takes precedence B23P9/025to inner walls of holes by using axially moving tools B23P9/04Treating or finishing by hammering or applying repeated pressure B23P11/00Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  connecting sheet metal or metal tubes, rods or profiles B21D39/00; riveting B21J; soldering, unsoldering, welding B23K; hand tools for connecting wire or strip B25B25/00; connecting metal parts by adhesives F16B11/00 B23P11/005by expanding or crimping B23P11/02by first expanding and then shrinking or vice versa, e.g. by using pressure fluidsby making force fits B23P11/022by using pressure fluids B23P11/025by using heat or cold B23P11/027for mounting tools in tool holders B23P13/00Making metal objects by operations essentially involving machining but not covered by a single other subclass making specific objects B23P15/00 B23P13/02in which only the machining operations are important B23P13/04involving slicing of profiled material B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass B23P15/001valves or valve housings welding B23K; valve housings per se F16K B23P15/002poppet valves B23P15/003bearings see also F16C33/00 B23P15/005keys making keys without essentially removing material, e.g. by punching B21D53/42; milling grooves in keys B23C3/35 B23P15/006turbine wheels B23P15/007injection moulding tools B23P15/008Rocket engine parts, e.g. nozzles, combustion chambers B23P15/02turbine or like blades from one piece B23P15/04turbine or like blades from several pieces B23P15/06piston rings from one piece B23P15/065from metal strip B23P15/08piston rings from several pieces B23P15/10pistons B23P15/105Enlarging pistons B23P15/12gratings making gratings by methods covered by other subclasses B21D47/005 B23P15/14gear parts, e.g. gear wheels B23P15/16plates with holes of very small diameter, e.g. for spinning or burner nozzles B23P15/18brake shoes B23P15/20railroad requirements, e.g. buffers B23P15/22cartridges or like shells B23P15/24dies B21C3/18, B21C25/10, B21D37/20 take precedence B23P15/243Honeycomb dies B23P15/246Laminated dies B23P15/26heat exchangers or the like making heat exchangers by methods covered by other subclasses B21D53/02 B23P15/28cutting tools sawing tools B23D63/00, B23D65/00; files or rasps B23D73/00 B23P15/30lathes or like tools B23P15/32twist-drills B23P15/34milling cutters B23P15/36for thread-cutting B23P15/38planing or slotting tools B23P15/30 takes precedence B23P15/40shearing tools B23P15/403razor blades B23P15/406rotary or plane die cutters B23P15/42broaching tools B23P15/44scraping or shaving tools B23P15/46reaming tools B23P15/48threading tools milling cutters for thread-cutting B23P15/36 B23P15/50dies B23P15/52taps B23P17/00Metal-working operations, not covered by a single other subclass or another group in this subclass B23P17/02Single metal-working processesMachines or apparatus therefor B23P17/04characterised by the nature of the material involved or the kind of product independently of its shape B23P17/06Making steel wool or the like B23P19/00Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation connecting metal parts or objects by metal-working procedures B21J, B23KTools or devices therefor so far as not provided for in other classes hand tools in general B25 B23P19/001Article feeders for assembling machines screws or nuts being carried by a disposable strip or disc B25B23/045 B23P19/002orientating the articles B23P19/003Escapement mechanisms used therewith B23P19/004Feeding the articles from hoppers to machines or dispensers B23P19/005by using flowing gases B23P19/006Holding or positioning the article in front of the applying tool B23P19/007Picking-up and placing mechanisms B23P19/008the parts being continuously transported through the machine during assembling or disassembling B23P19/02for connecting objects by press fit or for detaching same B23P19/10 takes precedence B23P19/021Railroad wheels on axles B23P19/022Extracting or inserting relatively long parts B23P19/024tube bundles B23P19/025For detaching only B23P19/027using hydraulic or pneumatic means B23P19/033 takes precedence B23P19/033using vibration B23P19/04for assembling or disassembling parts B23P19/041for disassembling pallets B23P19/042specially adapted for combustion engines shape of casings adapted to facilitate fitting or dismantling of engine parts for combustion engines F02F7/0046 B23P19/043for inserting piston-connecting rods assemblies in cylinders B23P19/045for assembling valve cotters and retainers of engine valves B23P19/046Disassembling lids from drums, e.g. by unfolding, for reconditioning or recovery B23P19/047for flexible profiles, e.g. sealing or decorating strips in grooves or on other profiles by devices moving along the flexible profile hand tools therefor B25B27/0092 B23P19/048Springs B23P19/06Screw or nut setting or loosening machines B23P19/061for pipes or pipe-couplings B23P19/062Pierce nut setting machines B23P19/063Deforming the nut only B23P19/064Deforming the support material only, e.g. the sheet or plate B23P19/065Arrangements for torque limiters or torque indicators in screw or nut setting machines for hand tools B25B23/14 B23P19/066by electrical means B23P19/067Bolt tensioners for hand tools B25B29/02 B23P19/068by using heating means B23P19/069Multi-spindle machines B23P19/08Machines for placing washers, circlips, or the like on bolts or other members B23P19/082for placing washers on nuts B23P19/084for placing resilient or flexible rings, e.g. O-rings, circlips B23P19/086Non-metallic protective bellows B23P19/088Piston rings in piston grooves B23P19/10Aligning parts to be fitted together B23P19/102using remote centre compliance devices B23P19/105using sensing means B23P19/107using oscillating, rotating or vibrating movements B23P19/12Alignment of parts for insertion into bores B23P21/00Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control B23P21/002the units stationary whilst being composed B23P21/004the units passing two or more work-stations whilst being composed B23P21/006the conveying means comprising a rotating table B23P21/008the assembling machines or tools moving synchronously with the units while these are being assembled B23P23/00Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass if the particular kinds of operation are not essential B23Q37/00 - B23Q41/00; working by laser beam combined with other working of metal B23K26/0093 B23P23/02Machine tools for performing different machining operations lathes, e.g. capstan lathes, B23B; combined horizontal boring and milling machines B23B39/02 B23P23/04for both machining and other metal-working operations B23P23/06Metal-working plant comprising a number of associated machines or apparatus B23P25/00Auxiliary treatment of workpieces, before or during machining operations, to facilitate the action of the tool or the attainment of a desired final condition of the work, e.g. relief of internal stress B23P25/003immediately preceding a cutting tool B23P25/006Heating the workpiece by laser during machining B23P2700/00 B23P2700/00Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups B23P2700/01Aircraft parts B23P2700/02Camshafts B23P2700/03Catalysts or parts thereof B23P2700/04Connecting rods B23P2700/05Cooking vessels B23P2700/06Cooling passages of turbine components, e.g. unblocking or preventing blocking of cooling passages of turbine components B23P2700/07Crankshafts B23P2700/08Fittings for doors and windows of buildings B23P2700/09Heat pipes B23P2700/10Heat sinks B23P2700/11Joints, e.g. ball joints, universal joints B23P2700/12Laminated parts B23P2700/13Parts of turbine combustion chambers B23P2700/14Suspension elements of automobile vehicles B23P2700/50Other automobile vehicle parts, i.e. manufactured in assembly lines