SU781341A1 - Cutter bit for mining machines - Google Patents
Cutter bit for mining machines Download PDFInfo
- Publication number
- SU781341A1 SU781341A1 SU792704921A SU2704921A SU781341A1 SU 781341 A1 SU781341 A1 SU 781341A1 SU 792704921 A SU792704921 A SU 792704921A SU 2704921 A SU2704921 A SU 2704921A SU 781341 A1 SU781341 A1 SU 781341A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- tip
- mining machines
- working head
- cutter
- cutter bit
- Prior art date
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- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Description
(54) РЕЗЕЦ ДЛЯ ГОРНЫХ МАШИН(54) CUTTER FOR MOUNTAIN MACHINES
Изобретение относитс к горной промышленности, а именно к режущим инструментам исполнительных органов горных машин. Известны резцы дл горных машин, включающие державку и рабочую головк с твердосплавным наконечником Ц.. Недостатком таких резцов вл етс мала прочность рабочей головки i за счет уменьшени материала на вер шине рабочей головки. Известны также резцы дл горных машин, включающие державку и рабочую головку с центральным выступом под соответствующую полость твердосплавного наконечника, имеющего основание прилегающее к рабочей головке К недостаткам этих резцов следует отнести то, что при изготовлении рез цов, оснащенных указанными наконечни ками, в процессе закреплени наконечника на державке резца с помощью пайки, углы, получаемые при пересечении линий и плоскостей, образующих форму полости наконечника, вл ютс концентраторами внутренних напр жений , возникающих при работе резца, разрушение режущей части резца происходит в первую очередь в местах наибольшей концентрации напр жений, что и создает повышенный расход инструмента . Цель изобретени - повышение проч нести резца. Поставленна цель достигаетс тем, что поверхность полости наконечника выполнена в виде части сферы, сопр женной с основанием наконечника по радиусам скруглени . На фиг. 1 изображен резец дл горных машин, общий вид; на фиг. 2 твердосплавный наконечни1 дл армировани рабочей головки резца. Резец дл горных машин включает державку 1 и рабочую головку 2 с центральным выступом 3 под соответствующую полость 4 твердосплавного наконечника 5. Твердосплавный наконечник имеет основание.6. Поверхность 7 полости наконечника выполнена в виде части сферы и сопр жена с основанием наконечника по радиусам 8 скруглени . Резец с помощью державки закрепл ют на исполнительном органе горных машин и при вращательно-поступательном движении исполнительного органа происходит разрушение угл рабочей головкой.The invention relates to the mining industry, namely to cutting tools of the executive bodies of mining machines. Cutters for mining machines are known, including a holder and a working head with a carbide tip C. A disadvantage of such cutters is the low strength of the working head i due to the reduction of material on the top of the tire of the working head. Cutters for mining machines are also known, including a holder and a working head with a central protrusion under the corresponding cavity of a carbide tip that has a base adjacent to the working head. The disadvantages of these cutters include the fact that in the manufacture of cutters equipped with the specified tips, in the process of fixing the tip on the tool holder with the help of soldering, the angles obtained by crossing the lines and planes that form the shape of the tip cavity are hubs of internal stresses; During the operation of the cutter, the destruction of the cutting part of the cutter occurs primarily in places of the greatest stress concentration, which creates an increased tool consumption. The purpose of the invention is to increase the incidence of the incisor. The goal is achieved by the fact that the surface of the tip cavity is made as a part of a sphere that is joined to the base of the tip along rounding radii. FIG. 1 shows a cutter for mining machines, a general view; in fig. 2 carbide tips1 for reinforcing the working head of the tool. The cutter for mining machines includes a holder 1 and a working head 2 with a central protrusion 3 under the corresponding cavity 4 of a carbide tip 5. The carbide tip has a base. The surface 7 of the tip cavity is made as part of a sphere and is associated with the tip base along radii 8 of rounding. The cutter with the help of the holder is fixed on the executive body of the mining machines and during the rotational-translational movement of the executive body the coal is destroyed by the working head.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792704921A SU781341A1 (en) | 1979-01-03 | 1979-01-03 | Cutter bit for mining machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792704921A SU781341A1 (en) | 1979-01-03 | 1979-01-03 | Cutter bit for mining machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU781341A1 true SU781341A1 (en) | 1980-11-23 |
Family
ID=20802002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU792704921A SU781341A1 (en) | 1979-01-03 | 1979-01-03 | Cutter bit for mining machines |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU781341A1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4529048A (en) * | 1982-10-06 | 1985-07-16 | Megadiamond Industries, Inc. | Inserts having two components anchored together at a non-perpendicular angle of attachment for use in rotary type drag bits |
| US4893875A (en) * | 1988-12-16 | 1990-01-16 | Caterpillar Inc. | Ground engaging bit having a hardened tip |
| WO1990001106A1 (en) * | 1988-07-20 | 1990-02-08 | Kennametal Inc. | Cutter bit |
| WO1990001107A1 (en) * | 1988-07-20 | 1990-02-08 | Kennametal Inc. | Cemented carbide tip |
| WO1990001105A1 (en) * | 1988-07-20 | 1990-02-08 | Kennametal Inc. | Cutter bit and tip |
| US4911503A (en) * | 1988-07-20 | 1990-03-27 | Kennametal Inc. | Earth engaging cutter bit |
| US5141289A (en) * | 1988-07-20 | 1992-08-25 | Kennametal Inc. | Cemented carbide tip |
| US8210618B2 (en) | 2007-08-23 | 2012-07-03 | Sandvik Intellectual Property Ab | Reduced volume cutting tip and cutter bit assembly incorporating same |
| US8678517B2 (en) | 2007-08-23 | 2014-03-25 | Sandvik Intellectual Property Ab | Reduced volume cutting tip and cutting bit incorporating same |
-
1979
- 1979-01-03 SU SU792704921A patent/SU781341A1/en active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4529048A (en) * | 1982-10-06 | 1985-07-16 | Megadiamond Industries, Inc. | Inserts having two components anchored together at a non-perpendicular angle of attachment for use in rotary type drag bits |
| WO1990001106A1 (en) * | 1988-07-20 | 1990-02-08 | Kennametal Inc. | Cutter bit |
| WO1990001107A1 (en) * | 1988-07-20 | 1990-02-08 | Kennametal Inc. | Cemented carbide tip |
| WO1990001105A1 (en) * | 1988-07-20 | 1990-02-08 | Kennametal Inc. | Cutter bit and tip |
| US4911504A (en) * | 1988-07-20 | 1990-03-27 | Kennametal Inc. | Cutter bit and tip |
| US4911503A (en) * | 1988-07-20 | 1990-03-27 | Kennametal Inc. | Earth engaging cutter bit |
| US4940288A (en) * | 1988-07-20 | 1990-07-10 | Kennametal Inc. | Earth engaging cutter bit |
| US4941711A (en) * | 1988-07-20 | 1990-07-17 | Kennametal Inc. | Cemented carbide tip |
| US5141289A (en) * | 1988-07-20 | 1992-08-25 | Kennametal Inc. | Cemented carbide tip |
| US4893875A (en) * | 1988-12-16 | 1990-01-16 | Caterpillar Inc. | Ground engaging bit having a hardened tip |
| US8210618B2 (en) | 2007-08-23 | 2012-07-03 | Sandvik Intellectual Property Ab | Reduced volume cutting tip and cutter bit assembly incorporating same |
| US8678517B2 (en) | 2007-08-23 | 2014-03-25 | Sandvik Intellectual Property Ab | Reduced volume cutting tip and cutting bit incorporating same |
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