| B | SK | SECTION B — PERFORMING OPERATIONS; TRANSPORTING |
| B23 | KL | MACHINE 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) |
| B23G | UKL | THREAD 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) |
| B23G 1/00 | HGR | Thread cutting; Automatic machines specially designed therefor |
| B23G 1/02 | UGR1 | |
| B23G 1/04 | UGR2 | | . . | Machines with one working-spindle |
|
| B23G 1/06 | UGR3 | | . . . | specially adapted for making conical screws, e.g. wood-screws |
|
| B23G 1/08 | UGR2 | | . . | Machines with a plurality of working-spindles |
|
| B23G 1/10 | UGR3 | | . . . | specially adapted for making conical screws, e.g. wood-screws |
|
| B23G 1/12 | UGR2 | | . . | 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 |
|
| B23G 1/14 | UGR3 | | . . . | specially adapted for making conical screws, e.g. wood-screws |
|
| B23G 1/16 | UGR1 | |
| B23G 1/18 | UGR2 | | . . | Machines with one working-spindle |
|
| B23G 1/20 | UGR2 | | . . | Machines with a plurality of working-spindles |
|
| B23G 1/22 | UGR1 | | . | Machines specially designed for operating on pipes or tubes |
|
| B23G 1/24 | UGR2 | |
| B23G 1/26 | UGR1 | | . | Manually-operated thread-cutting devices (features of the threading tool B23G 5/00) |
|
| B23G 1/28 | UGR2 | | . . | with means for adjusting the threading tool |
|
| B23G 1/30 | UGR2 | | . . | without means for adjusting the threading tool, e.g. with die-stocks (tap wrenches B25B) |
|
| B23G 1/32 | UGR1 | |
| B23G 1/34 | UGR2 | | . . | with a cutting bit moving in a closed path arranged eccentrically with respect to the axis of the rotating workpiece |
|
| B23G 1/36 | UGR1 | |
| B23G 1/38 | UGR2 | | . . | with grinding discs guided along the workpiece in accordance with the pitch of the required thread |
|
| B23G 1/40 | UGR2 | | . . | with grinding discs guided radially to the workpiece |
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| B23G 1/42 | UGR1 | |
| B23G 1/44 | UGR1 | | . | Equipment or accessories specially designed for machines or devices for thread cutting |
|
| B23G 1/46 | UGR2 | | . . | for holding the threading tools |
|
| B23G 1/48 | UGR2 | | . . | for guiding the threading tools |
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| B23G 1/50 | UGR2 | | . . | for cutting thread by successive operations |
|
| B23G 1/52 | UGR2 | | . . | for operating on pipes or tubes |
|
| B23G 3/00 | HGR | Arrangements 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 |
| B23G 3/02 | UGR1 | | . | for withdrawing or resetting the threading tool |
|
| B23G 3/04 | UGR2 | | . . | for repeatedly setting the threading tool in a predetermined working position |
|
| B23G 3/06 | UGR1 | | . | for compensating inaccuracies in the pitch of the lead-screw |
|
| B23G 3/08 | UGR1 | | . | for advancing or controlling the threading tool or the work by templates, cams, or the like |
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| B23G 3/10 | UGR2 | | . . | for cutting thread of variable pitch |
|
| B23G 3/12 | UGR2 | | . . | for using several adjacently-arranged threading tools, e.g. using several chasers |
|
| B23G 3/14 | UGR2 | | . . | for cutting thread of conical shape |
|
| B23G 5/00 | HGR | Thread-cutting tools; Die-heads |
| B23G 5/02 | UGR1 | | . | without means for adjustment |
|
| B23G 5/04 | UGR2 | |
| B23G 5/06 | UGR2 | |
| B23G 5/08 | UGR1 | | . | with means for adjustment |
|
| B23G 5/10 | UGR2 | |
| B23G 5/12 | UGR3 | |
| B23G 5/14 | UGR2 | |
| B23G 5/16 | UGR3 | |
| B23G 5/18 | UGR1 | |
| B23G 5/20 | UGR1 | | . | combined with other tools, e.g. drills |
|
| B23G 7/00 | HGR | Forming 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) |
| B23G 7/02 | UGR1 | |
| B23G 9/00 | HGR | Working 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) |
| B23G 11/00 | HGR | Feeding 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) |