|  | B |
SECTION B — PERFORMING OPERATIONS

SHAPING

|  | B23 |
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR (punching, perforating, making articles by processing sheet metal, tubes, or profiles Fulltext... Hierarchy... Expanded...B21D; wire-working Fulltext... Hierarchy... Expanded...B21F; making pins, needles, or nails Fulltext... Hierarchy... Expanded...B21G; making chains Fulltext... Hierarchy... Expanded...B21L; grinding Fulltext... Hierarchy... Expanded...B24)

|  | B23 |
Note(s) In addition to operations not provided for in any other class, this class provides, in sub-class Fulltext... Hierarchy... Expanded...B23P, for combinations of operations provided for in different sub-classes of classes Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B21-B24, with the exception of subsidiary operations performed in conjunction with main operations covered by a single sub-class. In the following elaborations: 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 kind adapted or arranged for a 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.

|  | B23C |
MILLING (broaching Fulltext... Hierarchy... Expanded...B23D; broach-milling in making gears Fulltext... Hierarchy... Expanded...B23F; arrangements for copying or controlling Fulltext... Hierarchy... Expanded...B23Q)

|  | B23C 1/00 |
Milling machines not designed for particular work or special operations

|  | B23C 1/02 |
· | with one horizontal working-spindle

|  | B23C 1/04 |
· | with a plurality of horizontal working-spindles

|  | B23C 1/06 |
· | with one vertical working-spindle

|  | B23C 1/08 |
· | with a plurality of vertical working-spindles

|  | B23C 1/10 |
· | with both horizontal and vertical working-spindles

|  | B23C 1/12 |
· | with spindle adjustable to different angles, e.g. either horizontally or vertically

|  | B23C 1/14 |
· | with rotary work-carrying table

|  | B23C 1/16 |
· | specially designed for control by copying devices

|  | B23C 1/18 |
· · | for milling while revolving the work

|  | B23C 1/20 |
· | Portable devices or machines; Hand-driven devices or machines

|  | B23C 3/00 |
Milling particular work; Special milling operations; Machines therefor (milling gear-teeth Fulltext... Hierarchy... Expanded...B23F)

|  | B23C 3/02 |
· | Milling surfaces of revolution (Fulltext... Hierarchy... Expanded...B23C 3/06, Fulltext... Hierarchy... Expanded...B23C 3/08 take precedence)

|  | B23C 3/04 |
· · | while revolving the work

|  | B23C 3/06 |
· | Milling crankshafts

|  | B23C 3/08 |
· | Milling cams, camshafts, or the like

|  | B23C 3/10 |
· | Relieving milling (lathes or turning devices for relieving Fulltext... Hierarchy... Expanded...B23B 5/42)

|  | B23C 3/12 |
· | Trimming or finishing edges, e.g. deburring welded corners

|  | B23C 3/14 |
· | Scrubbing or peeling ingots or similar workpieces

|  | B23C 3/16 |
· | Working surfaces curved in two directions

|  | B23C 3/18 |
· · | for shaping screw-propellers, turbine blades, or impellers

|  | B23C 3/20 |
· · | for shaping dies

|  | B23C 3/22 |
· | Forming overlapped joints, e.g. of the ends of piston-rings

|  | B23C 3/24 |
· | Making square or polygonal ends on workpieces, e.g. key studs on tools

|  | B23C 3/26 |
· | Making square or polygonal holes in workpieces, e.g. key holes in tools

|  | B23C 3/28 |
· | Grooving workpieces (thread-cutting by milling Fulltext... Hierarchy... Expanded...B23G 1/32)

|  | B23C 3/30 |
· · | Milling straight grooves, e.g. keyways

|  | B23C 3/32 |
· · | Milling helical grooves, e.g. in making twist-drills

|  | B23C 3/34 |
· · | Milling grooves of other forms, e.g. circumferential

|  | B23C 3/35 |
· · | Milling grooves in keys

|  | B23C 3/36 |
· | Milling milling-cutters (Fulltext... Hierarchy... Expanded...B23C 3/28 takes precedence)

|  | B23C 5/00 |
Milling-cutters (for cutting gear-teeth Fulltext... Hierarchy... Expanded...B23F 21/12)

|  | B23C 5/02 |
· | characterised by the shape of the cutter

|  | B23C 5/04 |
· · | Plain cutters, i.e. having essentially a cylindrical or tapered cutting surface of substantial length (Fulltext... Hierarchy... Expanded...B23C 5/10 takes precedence)

|  | B23C 5/06 |
· · | Face-milling cutters, i.e. having only or primarily a substantially flat cutting surface

|  | B23C 5/08 |
· · | Disc-type cutters

|  | B23C 5/10 |
· · | Shank-type cutters, i.e. with an integral shaft

|  | B23C 5/12 |
· · | Cutters specially designed for producing particular profiles (Fulltext... Hierarchy... Expanded...B23C 5/10 takes precedence)

|  | B23C 5/14 |
· · · | essentially comprising curves

|  | B23C 5/16 |
· | characterised by physical features other than shape

|  | B23C 5/18 |
· · | with permanently-fixed cutter-bits or teeth

|  | B23C 5/20 |
· · | with removable cutter-bits or teeth

|  | B23C 5/22 |
· · · | Securing arrangements for bits or teeth

|  | B23C 5/24 |
· · · · | adjustable

|  | B23C 5/26 |
· | Securing milling-cutters to the driving spindle

|  | B23C 5/28 |
· | Features relating to lubricating or cooling

|  | B23C 7/00 |
Milling devices able to be attached to a machine tool, whether or not replacing an operative portion of the machine tool

|  | B23C 7/02 |
· | to lathes

|  | B23C 7/04 |
· | to planing or slotting machines

|  | B23C 9/00 |
Details or accessories so far as specially adapted to milling machines or cutters (drives, control devices, or accessories, in general Fulltext... Hierarchy... Expanded...B23Q)