The term "metal-working" should be understood as covering the working of other materials unless the context requires otherwise.
The term "kind of operation" and similar expressions relate to such metal-working operations as boring, drilling, milling and grinding.
The term "kind of machine" means a machine designed for a particular kind of metal-working operation (e.g. a lathe).
The term "form of machine" means a machine of a particular kind adapted or arranged for a particular way of working or for particular work, e.g. face-plate lathe, tailstock lathe, turret lathe.
The term "different machines" is to be understood as covering different forms of machine for performing the same type of metal-working operation, e.g. vertical and horizontal boring machines.
Sub-class Fulltext... Hierarchy... Expanded...B23Q comprises features, specific to machine tools, which relate to a requirement or problem of a nature which is not peculiar to a particular kind of machine tool, e.g. feeding work, although the realisation of these features may differ according to the kind of machine tool concerned.
That sub-class provides in general for such features, even if the feature or a specific function, in any particular case, is to some extent peculiar to, or is claimed only for, machine tools designed for one particular operation; only in exceptional cases are such features to be classified in the sub-class for the machine tool concerned. Certain features of this general nature are, however, referred to sub-classes relating to particular metal-working operations, especially Fulltext... Hierarchy... Expanded...B23B, in which case the sub-classes in question are not restricted, in respect of those features, to the kind of machine tool with which they are primarily concerned. If details, components, or accessories have no essential feature specific to machine tools, the more general class, e.g. Fulltext... Hierarchy... Expanded...F16, takes precedence.
Associations of only turning-machines directed to a particular metal-working result (if the metal-working result is not essential Fulltext... Hierarchy... Expanded...B23Q 39/00)
B23B 5/00
Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
for reconditioning hubs or brake drums or axle spindles without removing same from the vehicle
B23B 5/06
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for turning valves or valve bodies
B23B 5/08
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for turning axles, bars, rods, tubes, rolls, i.e. shaft-turning lathes, roll lathes; Centreless turning
B23B 5/10
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for turning pilgrim rolls
B23B 5/12
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for peeling bars or tubes by making use of cutting bits arranged around the workpiece (making use of cutting bits arranged around the workpiece otherwise than by turning Fulltext... Hierarchy... Expanded...B23D 79/12)
for cutting grooves, e.g. oil grooves of helicoidal shape
B23B 7/00
Automatic or semi-automatic turning-machines with a single working-spindle, e.g. controlled by cams; Equipment therefor; Features common to automatic and semi-automatic turning-machines with one or more working-spindles
B23B 7/02
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Automatic or semi-automatic machines for turning of stock
B23B 7/04
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Turret machines
B23B 7/06
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with sliding headstock
B23B 7/08
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with the working-spindle vertical
B23B 7/10
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Accessories, e.g. guards
B23B 7/12
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Automatic or semi-automatic machines for turning of workpieces
B23B 7/14
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with the working-spindle horizontal
B23B 7/16
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with the working-spindle vertical
B23B 9/00
Automatic or semi-automatic turning-machines with a plurality of working-spindles, e.g. automatic multiple-spindle machines with spindles arranged in a drum carrier able to be moved into pre-determined positions; Equipment therefor (equipment applicable to single-spindle machines Fulltext... Hierarchy... Expanded...B23B 7/00)
B23B 9/02
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Automatic or semi-automatic machines for turning of stock
B23B 9/04
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with the working-spindles horizontal
B23B 9/06
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with the working-spindles vertical
B23B 9/08
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Automatic or semi-automatic machines for turning of workpieces
B23B 9/10
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with the working-spindles horizontal
B23B 9/12
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with the working-spindles vertical
B23B 11/00
Automatic or semi-automatic turning-machines incorporating equipment for performing other working procedures, e.g. slotting, milling, rolling
B23B 13/00
Arrangements for automatically conveying or chucking or guiding stock
B23B 13/02
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for turning-machines with a single working-spindle
B23B 13/04
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for turning-machines with a plurality of working-spindles
B23B 13/06
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Arrangements for switching-off the drive of turning-machines after the stock has been completely machined
Arrangements for conveying, loading, adjusting, reversing, chucking, or discharging workpieces specially designed for automatic or semi-automatic turning-machines
B23B 17/00 - B23B 33/00
Components or accessories particularly for turning machines
Measuring, gauging, or adjusting equipment on turning-machines for setting-on, feeding, controlling, or monitoring the cutting tools or work (measuring devices or gauges Fulltext... Hierarchy... Expanded...G01B)
Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machines; Use of auxiliary equipment in connection with such methods
General-purpose boring or drilling machines or devices; Sets of boring or drilling machines
B23B 39/02
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Boring machines; Combined horizontal boring and milling machines
B23B 39/04
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Co-ordinate boring or drilling machines; Machines for making holes without previous marking
B23B 39/06
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Equipment for positioning work
B23B 39/08
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Devices for programme control
B23B 39/10
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characterised by the drive, e.g. by fluid-pressure drive, pneumatic power drive
B23B 39/12
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Radial drilling machines
B23B 39/14
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with special provision to enable the machine or the drilling or boring head to be moved into any desired position, e.g. with respect to immovable work
B23B 39/16
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Drilling machines with a plurality of working-spindles; Drilling automatons
B23B 39/18
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Setting work or tool carrier along a straight index line
B23B 39/20
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Setting work or tool carrier along a circular index line; Turret head drilling machines
B23B 39/22
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with working-spindles in opposite headstocks
B23B 39/24
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designed for programme control
B23B 39/26
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in which the working position of tool or work is controlled by copying discrete points of a pattern (features of copying devices Fulltext... Hierarchy... Expanded...B23Q 35/02)
B23B 39/28
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Associations of only boring or drilling machines directed to a particular metal-working result (if not producing a particular metal-working result Fulltext... Hierarchy... Expanded...B23Q 39/00)
B23B 41/00
Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
B23B 41/02
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for boring deep holes; Trepanning, e.g. of gun or rifle barrels
B23B 41/04
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for boring polygonal or other non-circular holes
B23B 41/06
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for boring conical holes
B23B 41/08
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for boring, drilling, or tapping holes in tubes under fluid or gas pressure (sealing features or operations, combined with placing branch parts Fulltext... Hierarchy... Expanded...F16L 41/04)
B23B 41/10
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for boring holes in steam boilers
B23B 41/12
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for forming working surfaces of cylinders, of bearings, e.g. in heads of driving rods, or of other engine parts
B23B 41/14
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for very small holes
B23B 41/16
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for boring holes with high-quality surface
B23B 43/00
Boring or drilling devices able to be attached to a machine tool, whether or not replacing an operative portion of the machine tool (if specially adapted for particular work Fulltext... Hierarchy... Expanded...B23B 41/00)
B23B 43/02
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to the tailstock of a lathe
B23B 45/00
Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor