GB252618A - Screw thread cutting tool - Google Patents
Screw thread cutting toolInfo
- Publication number
- GB252618A GB252618A GB2785625A GB2785625A GB252618A GB 252618 A GB252618 A GB 252618A GB 2785625 A GB2785625 A GB 2785625A GB 2785625 A GB2785625 A GB 2785625A GB 252618 A GB252618 A GB 252618A
- Authority
- GB
- United Kingdom
- Prior art keywords
- teeth
- cutting
- edges
- thread
- series
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G5/00—Thread-cutting tools; Die-heads
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Processing (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
252,618. Baumann, E., and Strasmann, A. Nov. 5,1925. Screwing-dies; ta;ps.-In screw-cutting tools of the kind having longitudinal series of teeth provided with lateral and transverse cutting-edges, the edges of the teeth in relatively adjacent series being oppositely located, the lateral edges conform in shape to the flanks of the thread to be cut and the transverse edges form an acute angle with the axis of the tool. As applied to taps, the teeth which perform the preliminary cutting of the thread are formed with oblique transverse cutting-edges 1a, Fig. 1, the direction of obliquity being opposite in succeeding teeth. The opposite lateral edges may be removed alternately in succeeding teeth as at 3. so that each tooth removes a rough cutting a, Fig. 5, and also a fine cutting b. Alternatively, one cutting-edge may coincide with the flank of the thread itself as in Fig. 15. In the case of taps the lowest points 33 of the cutting-edges lie within the core diameter of the thread and in cutters for external threads they lie outside the largest diameter of the thread so as to true the work to the correct size for the shaping-cutters. For cutting square or trapezoidal threads the taps are constructed as shown in Figs. 7 and 11 respectively, the lateral edges 37, 38 being left full and removed slightly in alternate series of teeth so as to produce rough and fine cutting as shown in Figs. 10 and 14. The cuttings 28, 28<1>, Fig. 10, are produced by each of the teeth 34, Fig. 7, while the cuttings 27, 27<1> are produced by each of the teeth in the succeeding series. Similarly, the teeth 40, Fig. 11, produce cuttings 30, 30<1>, Fig. 14, while the teeth in the succeeding series produce cuttings 29, 29'. In a modification the lateral cutting-edges are not removed in alternate teeth.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2785625A GB252618A (en) | 1925-11-05 | 1925-11-05 | Screw thread cutting tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2785625A GB252618A (en) | 1925-11-05 | 1925-11-05 | Screw thread cutting tool |
Publications (1)
Publication Number | Publication Date |
---|---|
GB252618A true GB252618A (en) | 1926-06-03 |
Family
ID=10266428
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2785625A Expired GB252618A (en) | 1925-11-05 | 1925-11-05 | Screw thread cutting tool |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB252618A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3176331A (en) * | 1962-11-01 | 1965-04-06 | Pipe Machinery Company | High speed carbide chaser set |
US3177508A (en) * | 1962-11-01 | 1965-04-13 | Pipe Machinery Company | Set of high speed carbide chasers |
CN102756185A (en) * | 2012-07-10 | 2012-10-31 | 天津钢管集团股份有限公司 | Thread chaser for cutting double-line pipe threads |
CN103889629A (en) * | 2011-10-19 | 2014-06-25 | 住友电工硬质合金株式会社 | Cutting tool for screw thread cutting |
-
1925
- 1925-11-05 GB GB2785625A patent/GB252618A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3176331A (en) * | 1962-11-01 | 1965-04-06 | Pipe Machinery Company | High speed carbide chaser set |
US3177508A (en) * | 1962-11-01 | 1965-04-13 | Pipe Machinery Company | Set of high speed carbide chasers |
CN103889629A (en) * | 2011-10-19 | 2014-06-25 | 住友电工硬质合金株式会社 | Cutting tool for screw thread cutting |
EP2769795A4 (en) * | 2011-10-19 | 2015-10-21 | Sumitomo Elec Hardmetal Corp | Cutting tool for screw thread cutting |
CN103889629B (en) * | 2011-10-19 | 2016-01-27 | 住友电工硬质合金株式会社 | Threading tool |
CN102756185A (en) * | 2012-07-10 | 2012-10-31 | 天津钢管集团股份有限公司 | Thread chaser for cutting double-line pipe threads |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2855657A (en) | Cutting tool with chip breakers | |
US9884376B2 (en) | Milling burr | |
US2684492A (en) | Combination drilling and tapping tool | |
GB252618A (en) | Screw thread cutting tool | |
US1948057A (en) | Rotary cutting tool | |
US1488271A (en) | Hexagonal die | |
US1542893A (en) | Taps, dies, and the like | |
US1961003A (en) | Threading tool | |
US2319544A (en) | Thread cutting tool | |
US1867021A (en) | Method of producing metal working tools | |
US2166369A (en) | Solid screw cutting die | |
US2054745A (en) | Thread cutting die | |
US258390A (en) | Geoege w | |
US2204866A (en) | Threading tool | |
ES457366A1 (en) | Method for producing sparking wheels | |
US2041027A (en) | Thread cutting mechanism | |
GB479949A (en) | Improvements in hand tools for re-cutting or regenerating screw threads | |
GB226546A (en) | Improvements in and relating to screw thread cutting tools | |
US1796925A (en) | Method of making screw dies | |
US3148394A (en) | Thread cutting chaser for buttress thread cutting | |
US588056A (en) | Screw-cutting tool | |
US1846508A (en) | Means for cutting dardelet threads | |
US1053158A (en) | Screw-cutting die. | |
US1846509A (en) | Thread cutter | |
GB246105A (en) |