SU1460241A1 - Cutting bit for mining machines - Google Patents
Cutting bit for mining machines Download PDFInfo
- Publication number
- SU1460241A1 SU1460241A1 SU874231447A SU4231447A SU1460241A1 SU 1460241 A1 SU1460241 A1 SU 1460241A1 SU 874231447 A SU874231447 A SU 874231447A SU 4231447 A SU4231447 A SU 4231447A SU 1460241 A1 SU1460241 A1 SU 1460241A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- front face
- grooves
- cutter
- pair
- intersection
- Prior art date
Links
Landscapes
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
Изобретение относитс к горному делу и М. б. использовано дл оснащени горных машин. Цель - снижение энергоемкости резани в зких горных поррд. Резец включает державку с клиновидным поперечным сечением (ПС) и рабочую головку с боковыми гран ми 6, имеющими по меньшей мере одну пару симметрично расположенных относительно продольной плоскости симметрии резца и параллельных передней грани (ПГ) канавкой 7 пазов с V-образным ПС, одна сторона 8 которого наклонена под острым углом р к продольной плоскости симметрии резца, а друга сторона 9 образует с первой угол заострени а. Вершины углов аир ориентированы в направлении от ПГ. При этом ПС державки вписываетс между впадинами V-образных пазов. Пара режущих кромок (ПРК) 10 образуетс пересечением боковых поверхностей канавки 7 и первой пары пазов, а ПРК И и 12 - пересечением боковых поверхностей смежных пазов. Рассто ние между ПРК 10, 11 и 12 увеличиваетс в направлении от ПГ. При работе резца за счет последовательного врезани в горный массив ПРК 10, II и 12 обеспечиваетс эффективна отбойка горной массы при расширении прорезаемой щели . 3 ил. S (ЛThe invention relates to mining and M. b. used to equip mining machines. The goal is to reduce the energy intensity of cutting viscous rock porrd. The cutter includes a holder with a wedge-shaped cross section (PS) and a working head with side faces 6 having at least one pair of cutters symmetrically located relative to the longitudinal symmetry plane of the cutter and parallel to the front face (PG) groove 7 slots with V-shaped PS, one side 8 of which is inclined at an acute angle p to the longitudinal plane of symmetry of the cutter, and the other side 9 forms with the first angle the point a. The tops of the corners of the calamus are oriented in the direction from the PG. In doing so, the PS of the holder fits between the depressions of the V-shaped grooves. A pair of cutting edges (PPH) 10 is formed by the intersection of the side surfaces of the groove 7 and the first pair of slots, and the PPK I and 12 is formed by the intersection of the side surfaces of the adjacent grooves. The distance between the CCP 10, 11 and 12 increases in the direction from the PG. During the operation of the tool, due to the successive plunging into the rock mass, PPK 10, II, and 12 ensure effective breaking of the rock mass during expansion of the slotted slit. 3 il. S (l
Description
фие.fie.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU874231447A SU1460241A1 (en) | 1987-04-16 | 1987-04-16 | Cutting bit for mining machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU874231447A SU1460241A1 (en) | 1987-04-16 | 1987-04-16 | Cutting bit for mining machines |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1460241A1 true SU1460241A1 (en) | 1989-02-23 |
Family
ID=21298948
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU874231447A SU1460241A1 (en) | 1987-04-16 | 1987-04-16 | Cutting bit for mining machines |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU1460241A1 (en) |
-
1987
- 1987-04-16 SU SU874231447A patent/SU1460241A1/en active
Non-Patent Citations (1)
Title |
---|
Авторское свидетельство СССР № 767343, кл. Е 21 С 25/38, 1978. Авторское свидетельство СССР № 623958, кл. Е 21 С 25/38, 1977. * |
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