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IPC 7
B23G-B23G01100

SECTION B – PERFORMING OPERATIONS; TRANSPORTING


B 23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR (punching, perforating, making articles by processing sheet metal, tubes, or profiles B21D; wire-working B21F; making pins, needles, or nails B21G; making chains B21L; grinding B24)


B 23 GTHREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH (thread- forming by corrugating tubes B21D 15/04, by rolling B21H 3/02, by forging, pressing, or hammering B21K 1/56; making helical grooves by turning B23B 5/48, by milling B23C 3/32, by grinding B24B 19/02; arrangements for copying or controlling B23Q)


Note

 In this subclass, the following expression is used with the meaning indicated:

 "thread cutting" includes the use of tools similar both in form and in manner of use to thread-cutting tools, but without removing any material.


Subclass Index

THREAD-CUTTING METHODS, MACHINES OR DEVICES THEREFOR 

B23G 1/00, B23G 3/00, B23G 7/00, B23G 9/00 

FINISHING 

B23G 9/00 

TOOLS 

B23G 5/00, B23G 7/02 

ACCESSORIES 

B23G 11/00 



1/

00Thread cutting; Automatic machines specially designed therefor

1/

02.on an external or internal cylindrical or conical surface, e.g. on recesses (B23G 1/16, B23G 1/22, B23G 1/32, B23G 1/36 take precedence)

1/

04..Machines with one working-spindle

1/

06...specially adapted for making conical screws, e.g. wood-screws

1/

08..Machines with a plurality of working-spindles

1/

10...specially adapted for making conical screws, e.g. wood-screws

1/

12..Machines with a toothed cutter in the shape of a spur gear or the like which is rotated to generate the thread profile as the work rotates

1/

14...specially adapted for making conical screws, e.g. wood-screws

1/

16.in holes of workpieces by taps (B23G 1/26, B23G 1/32, B23G 1/36 take precedence)

1/

18..Machines with one working-spindle

1/

20..Machines with a plurality of working-spindles

1/

22.Machines specially designed for operating on pipes or tubes

1/

24..portable

1/

26.Manually-operated thread-cutting devices (features of the threading tool B23G 5/00)

1/

28..with means for adjusting the threading tool

1/

30..without means for adjusting the threading tool, e.g. with die-stocks (tap wrenches B25B)

1/

32.by milling

1/

34..with a cutting bit moving in a closed path arranged eccentrically with respect to the axis of the rotating workpiece

1/

36.by grinding

1/

38..with grinding discs guided along the workpiece in accordance with the pitch of the required thread

1/

40..with grinding discs guided radially to the workpiece

1/

42.Centreless grinding

1/

44.Equipment or accessories specially designed for machines or devices for thread cutting

1/

46..for holding the threading tools

1/

48..for guiding the threading tools

1/

50..for cutting thread by successive operations

1/

52..for operating on pipes or tubes


3/

00Arrangements or accessories for enabling machine tools not specially designed only for thread cutting to be used for this purpose, e.g. arrangements for reversing the working-spindle

3/

02.for withdrawing or resetting the threading tool

3/

04..for repeatedly setting the threading tool in a predetermined working position

3/

06.for compensating inaccuracies in the pitch of the lead-screw

3/

08.for advancing or controlling the threading tool or the work by templates, cams, or the like

3/

10..for cutting thread of variable pitch

3/

12..for using several adjacently-arranged threading tools, e.g. using several chasers

3/

14..for cutting thread of conical shape


5/

00Thread-cutting tools; Die-heads

5/

02.without means for adjustment

5/

04..Dies

5/

06..Taps (chucks therefor B23B 31/00)

5/

08.with means for adjustment

5/

10..Die-heads

5/

12...self-releasing

5/

14..Tapping-heads

5/

16...self-releasing

5/

18.Milling cutters

5/

20.combined with other tools, e.g. drills


7/

00Forming thread by means of tools similar both in form and in manner of use to thread-cutting tools, but without removing any material (features of machines or devices not specially adapted to the particular mode of forming the thread B23G 1/00)

7/

02.Tools for this purpose


9/

00Working screws, bolt heads or nuts in conjunction with thread cutting, e.g. slotting screw heads or shanks, removing burrs from screw heads or shanks; Finishing, e.g. polishing, any screw thread (making washers or nuts by processing metal sheets, tubes or profiles without essentially removing material B21D 53/20, B21D 53/24)


11/

00Feeding or discharging mechanisms combined with, or arranged in, or specially adapted for use in connection with, thread-cutting machines (for machine tools in general B23Q)


  
 

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