MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING (grinding of gear teeth B23F, of screw-threads B23G1/36; by electro-erosion B23H; abrasive or related blasting B24C; tools for grinding, buffing or sharpening B24D; polishing compositions C09G1/00; abrasives C09K3/14; electrolytic etching or polishing C25F3/00; grinding arrangements for use on assembled railway tracks E01B31/17); DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS

Introduced: September 1968

Description

B24B encompasses machines, devices, and processes for grinding and polishing operations, including surface finishing techniques that use abrasive tools or compounds. The subclass covers grinding machines (stationary and portable), polishing equipment, lap machines, and honing devices, as well as methods for dressing or conditioning abrading surfaces to maintain their cutting efficiency. It includes systems for supplying and controlling grinding, polishing, or lapping agents (coolants, lubricants, abrasive slurries) during finishing operations. Adjacent subclass B24A covers abrasive articles themselves, while B24C and B24D address specific grinding applications in tool sharpening and saw blade maintenance.

Title

Titles differ between systems:

IPC: MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS

CPC: MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING (grinding of gear teeth B23F, of screw-threads B23G1/36; by electro-erosion B23H; abrasive or related blasting B24C; tools for grinding, buffing or sharpening B24D; polishing compositions C09G1/00; abrasives C09K3/14; electrolytic etching or polishing C25F3/00; grinding arrangements for use on assembled railway tracks E01B31/17); DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS

Full Title

Full titles differ between systems:

IPC:

MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS

CPC:

MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING (grinding of gear teeth B23F, of screw-threads B23G1/36; by electro-erosion B23H; abrasive or related blasting B24C; tools for grinding, buffing or sharpening B24D; polishing compositions C09G1/00; abrasives C09K3/14; electrolytic etching or polishing C25F3/00; grinding arrangements for use on assembled railway tracks E01B31/17); DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS

IPC and CPC are identically structured here. All 28 subcodes exist in both systems.

23 shared codes have differing titles between IPC and CPC.

Child Classifications

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B24B 1/00 Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes +3 CPC IPC+CPC Available in IPC and CPC
B24B 11/00 Machines or devices designed for grinding spherical surfaces or parts of spherical surfaces on work; Accessories therefor (specially designed for optical surfaces B24B13/00, for seat surfaces B24B15/00) IPC+CPC Available in IPC and CPC
B24B 13/00 Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor (edging optical work, e.g. lenses, prisms B24B9/14) +6 CPC IPC+CPC Available in IPC and CPC
B24B 15/00 Machines or devices designed for grinding seat surfaces; Accessories therefor (for spherical surfaces in general B24B11/00) IPC+CPC Available in IPC and CPC
B24B 17/00 Special adaptations of machines or devices for grinding controlled by patterns, drawings, magnetic tapes or the like (machines or devices so-controlled for grinding the edges of lenses B24B9/14; for grinding or polishing optical lens surfaces B24B13/06; for grinding non-circular cross-sections B24B19/08; for grinding trochoidal surfaces B24B19/09; for grinding cams B24B19/12; for grinding turbine blades or the like B24B19/14; such control means per se B23Q33/00, B23Q35/00, G05); Accessories therefor IPC+CPC Available in IPC and CPC
B24B 19/00 Single-purpose machines or devices for particular grinding operations not covered by any other main group (tapering, chamfering, or relief cutting of taps or reamers B24B3/20, B24B3/22, grinding screw threads B23G) +8 CPC IPC+CPC Available in IPC and CPC
B24B 21/00 Machines or devices using grinding or polishing belts (for sharpening cutting edges of tools B24B3/00; portable belt-grinding machines B24B23/06); Accessories therefor +4 CPC IPC+CPC Available in IPC and CPC
B24B 23/00 Portable grinding machines, e.g. hand-guided; Accessories therefor (B24B7/18 takes precedence; for grinding seat surfaces B24B15/00; having a flexible shaft B24B27/027; grinders for cutting-off B24B27/08; dust extraction equipment B24B55/10; details or components, e.g. casings, bodies of portable power-driven tools not particularly related to the operation performed B25F5/00) +1 CPC IPC+CPC Available in IPC and CPC
B24B 25/00 Grinding machines of universal type IPC+CPC Available in IPC and CPC
B24B 27/00 Other grinding machines or devices +12 CPC IPC+CPC Available in IPC and CPC
B24B 29/00 Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents (polishing tools in general B24D13/00) +1 CPC IPC+CPC Available in IPC and CPC
B24B 3/00 Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools (non-abrasive sharpening devices for scythes, sickles, or the like A01D3/00; sharpening devices designed as components of machines with cutters, see the relevant places for the machines, e.g. A01D75/08, B26D7/12; sharpening of saw teeth B23D63/12; sharpening of files or rasps B23D73/00; grinding of die-stocks or chasers B23G1/36) +2 CPC IPC+CPC Available in IPC and CPC
B24B 31/00 Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor (abrasive blasting machines B24C3/26) +2 CPC IPC+CPC Available in IPC and CPC
B24B 33/00 Honing machines or devices; Accessories therefor IPC+CPC Available in IPC and CPC
B24B 35/00 Machines or devices designed for superfinishing surfaces on work, i.e. by means of abrading blocks reciprocating with high frequency +1 CPC IPC+CPC Available in IPC and CPC
B24B 37/00 Lapping machines or devices; Accessories (B24B3/00 takes precedence) IPC+CPC Available in IPC and CPC
B24B 39/00 Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone (modifying the physical properties or structure of metal by burnishing C21D7/08, C22F1/00); Accessories therefor +2 CPC IPC+CPC Available in IPC and CPC
B24B 41/00 Component parts such as frames, beds, carriages, headstocks +3 CPC IPC+CPC Available in IPC and CPC
B24B 45/00 Means for securing grinding wheels on rotary arbors (suppression of vibrations in systems F16F15/00; testing static or dynamic balancing of machines G01M1/00) +2 CPC IPC+CPC Available in IPC and CPC
B24B 47/00 Drives or gearings; Equipment therefor IPC+CPC Available in IPC and CPC