SU130876A1 - The method of performing the relief thread on the three-taps with their centerless rolling - Google Patents
The method of performing the relief thread on the three-taps with their centerless rollingInfo
- Publication number
- SU130876A1 SU130876A1 SU645982A SU645982A SU130876A1 SU 130876 A1 SU130876 A1 SU 130876A1 SU 645982 A SU645982 A SU 645982A SU 645982 A SU645982 A SU 645982A SU 130876 A1 SU130876 A1 SU 130876A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- taps
- thread
- rolling
- centerless
- relief thread
- Prior art date
Links
Landscapes
- Forging (AREA)
Description
Известные способы выполнени затылованной резьбы на метчиках, например шлифовальным кругом на резьбошлифовальных станках, относительно дороги и примен ютс лишь при изготовлении машинных метчиков из быстрорежуших сталей. Ручные же метчики из углеродистых сталей изготовл ютс с незатылованной резьбой в св зи с отсутствием приемлемого по экономическим и технологическим факторам способа затыловани резьбы. В эксплуатации метчики с незатылованной резьбой имеют меньшую стойкость по сравнению с метчиками с затылованной резьбой и, кроме того, подвержены поломкам из-за неблагопри тных условий резани при нарезании резьб.The known methods for making tapped threads on taps, for example with a grinding wheel on thread grinding machines, are relatively expensive and are used only in the manufacture of machine taps from high-speed steels. Carbon steel hand taps are made with non-capped threads due to the lack of an economically and technologically acceptable way to thread the thread. In operation, taps with a non-threaded thread have a lower durability compared to taps with a tapped thread and, in addition, are prone to breakage due to adverse cutting conditions when cutting threads.
Предлагаемый способ позвол ет изготовл ть трехперые метчики с затылованной резьбой за счет образовани ее в процессе бесцентрового накатывани без последуюшей операции затыловани . Дл этого заготовкам метчиков перед накатыванием придают некруглую форму, образованную в сечени х, перпендикул рных оси, кривыми, прин тыми дл выполнени затылков резьбовых ниток режущих перьев метчиков.The proposed method allows three-way taps with tapped threads to be produced due to its formation in the process of centerless rolling without a subsequent cutting operation. To this end, the tipped blanks, before rolling, are given a non-circular shape, formed in sections, perpendicular to the axis, with curves adopted to make the headings of the threaded threads of the cutting feathers of the taps.
Образование некруглой формы заготовок метчиков может быть осуществлено нродольной прокаткой их фасонными роликами или другими способами пластического деформировани с последующим бесцентровым шлифованием.The formation of a non-circular shape of the billet taps can be carried out by rolling with their shaped rollers or other methods of plastic deformation followed by grinding without centering.
На фиг. I, 2 и 3 изображены последовательно поперечные сечени заготовки трехперого метчика в процессе выполнени на них затылованной резьбы по предлагаемому способу.FIG. I, 2, and 3 depict successively cross-sections of the three-tap blank during the execution of the grounding thread on the proposed method.
Профиль заготовки (фиг. 1), очерченный в соответствии с кривыми затыловани , характеризуетс абсолютным равенством любых диаметральных размеров торцового сечени при переменных значени х радиусов точек профил по абсолютной величине- Этот профиль получаетс The profile of the workpiece (Fig. 1), outlined in accordance with the backing curves, is characterized by the absolute equality of any diametrical dimensions of the end section for varying values of the radii of the profile points in absolute value. This profile is obtained
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU645982A SU130876A1 (en) | 1959-12-02 | 1959-12-02 | The method of performing the relief thread on the three-taps with their centerless rolling |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU645982A SU130876A1 (en) | 1959-12-02 | 1959-12-02 | The method of performing the relief thread on the three-taps with their centerless rolling |
Publications (1)
Publication Number | Publication Date |
---|---|
SU130876A1 true SU130876A1 (en) | 1960-11-30 |
Family
ID=48401983
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU645982A SU130876A1 (en) | 1959-12-02 | 1959-12-02 | The method of performing the relief thread on the three-taps with their centerless rolling |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU130876A1 (en) |
-
1959
- 1959-12-02 SU SU645982A patent/SU130876A1/en active
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