SU1028455A1 - Chipless tap - Google Patents
Chipless tap Download PDFInfo
- Publication number
- SU1028455A1 SU1028455A1 SU813315602A SU3315602A SU1028455A1 SU 1028455 A1 SU1028455 A1 SU 1028455A1 SU 813315602 A SU813315602 A SU 813315602A SU 3315602 A SU3315602 A SU 3315602A SU 1028455 A1 SU1028455 A1 SU 1028455A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- tap
- platforms
- thread
- intake part
- tops
- Prior art date
Links
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
Landscapes
- Food-Manufacturing Devices (AREA)
Abstract
МЕТЧИК БЕССТРУЖЕЧНЫЙ, витки резьбы заборной части которого выполнены с площадками по вершинам, отличающийс тем, что, с целью увеличени стойкости, площадки выполнены перпендикул рньми углу подъема винтовой линии резьбы метчика . р ND ЭО 4 СП :лThe stripper is without a sleeve, the thread turns of the intake part of which are made with platforms along the tops, characterized in that, in order to increase durability, the platforms are made perpendicular to the elevation angle of the tap thread helix. R ND EO 4 SP: l
Description
Изобретение относитс к металообработке и может быть использовано при изготовлении внутренних резьб методом пластического деформировани Известен метчик, у которого на заборной части выполнены площадки по наружному диаметру витков резъбы, причем площадки расположены параллельно оси метчика 13. Недостатком известного метчика вл етс уменьшение его стойкости. Это происходит в результате скола вершин деформирующих граней в процес се пластического деформировани всле дствие того, что усили деформации, действующие на площадки, направлены к ним под УГЛОМ, что вызывает по вление помимо нормальной силы еще и тангенциальной силы. Возникновение тангёнц альной силы обусловливаетс тем, что площадки расположенны под углом к линии угла подъема витков резьбы метчика. Цель изобретени - увеличение сто кости инструмента. Поставленна цель достигаетс тем что площадки, расположенные на вершинах витков резьбы заборной части метчика, выполнены перпендикул рными: углу подъема бинтовой линии резьбы. На чертеже схематически показана коническа заборна часть метчика. На заборной части 1 витки резьбы 2 имеют по наружному диаметру площадки 3. Площадки выполнены перпендикул рными углу подъема винтовой линии резьбы метчика. В поцессе пластического деформировани металла возникающие усили направлены по линии угла подъема резьбы, т.е. перпендикул рно площадкам на витках-резьбы заборной части. Этим исключаетс по вление тангенциальных сил и снижаютс суммарные усили на к аждый виток резьбы метчика , что предотвращает выкрашивание вершин деформирующих граней метчиков в процессе пластического деформировани металла, вследствие чего увеличиваетс стойкость инйтрумента.The invention relates to metalworking and can be used in the manufacture of internal threads by plastic deformation. A tap is known in which pads are made on the intake part along the outer diameter of thread turns, and the pads are located parallel to the axis of the tap 13. A disadvantage of the known tap is a reduction in its durability. This occurs as a result of the cleavage of the tops of the deforming faces in the process of plastic deformation due to the fact that the strain forces acting on the platforms are directed to them under the ANGLE, which causes the appearance of a tangential force in addition to the normal force. The appearance of the tangential force is due to the fact that the platforms are angled to the line of the angle of elevation of the turns of the thread of the tap. The purpose of the invention is to increase the tool cost. The goal is achieved by the fact that the platforms located on the tops of the threads of the intake part of the tap are made perpendicular: the angle of elevation of the bandage line of the thread. The drawing schematically shows the conical intake part of the tap. On the intake part 1, the threads of the thread 2 are on the outer diameter of the platform 3. The platforms are made perpendicular to the elevation angle of the tap thread helix. In the process of plastic deformation of metal, the resulting forces are directed along the line of the elevation angle of the thread, i.e. perpendicular to the pads on the threads of the intake part. This eliminates the occurrence of tangential forces and reduces the total force on each turn of the tap thread, which prevents chipping of the tops of the deforming faces of the taps during plastic deformation of the metal, as a result of which the tool life increases.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU813315602A SU1028455A1 (en) | 1981-07-10 | 1981-07-10 | Chipless tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU813315602A SU1028455A1 (en) | 1981-07-10 | 1981-07-10 | Chipless tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1028455A1 true SU1028455A1 (en) | 1983-07-15 |
Family
ID=20968500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU813315602A SU1028455A1 (en) | 1981-07-10 | 1981-07-10 | Chipless tap |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1028455A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5664915A (en) * | 1996-03-22 | 1997-09-09 | Hawke; Terrence C. | Tap and method of making a tap with selected size limits |
-
1981
- 1981-07-10 SU SU813315602A patent/SU1028455A1/en active
Non-Patent Citations (1)
| Title |
|---|
| 1. Авторское свидетельство СССР 297440, кл. В 23G 5/06, 1971(прототип). , f IТ.ч bas irOTHi. * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5664915A (en) * | 1996-03-22 | 1997-09-09 | Hawke; Terrence C. | Tap and method of making a tap with selected size limits |
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