FR2397515A1 - ROTATING HAVING HEAD FOR ROCK - Google Patents
ROTATING HAVING HEAD FOR ROCKInfo
- Publication number
- FR2397515A1 FR2397515A1 FR7809979A FR7809979A FR2397515A1 FR 2397515 A1 FR2397515 A1 FR 2397515A1 FR 7809979 A FR7809979 A FR 7809979A FR 7809979 A FR7809979 A FR 7809979A FR 2397515 A1 FR2397515 A1 FR 2397515A1
- Authority
- FR
- France
- Prior art keywords
- head
- degrees
- cell
- axis
- face
- 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.)
- Withdrawn
Links
- 230000002093 peripheral effect Effects 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/18—Mining picks; Holders therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/18—Mining picks; Holders therefor
- E21C35/183—Mining picks; Holders therefor with inserts or layers of wear-resisting material
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/18—Mining picks; Holders therefor
- E21C35/183—Mining picks; Holders therefor with inserts or layers of wear-resisting material
- E21C35/1837—Mining picks; Holders therefor with inserts or layers of wear-resisting material characterised by the shape
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Earth Drilling (AREA)
Abstract
Cette tête de havage est du type de celles sur la face périphérique de laquelle sont fixés des porte-outils pour le montage de pics interchangeables. Dans la tête selon l'invention, les porte-outils 4 dont l'alvéole 6 a une section circulaire, sont montés de façon que l'axe 7 de l'alvéole forme un angle de 35 degrés à 45 degrés avec une ligne radiale 8 reliant l'axe de la tête au centre de l'extrémité extérieure de l'alvéole, les pics sont des pics de havage de type radial, munis d'un fût 9 de section circulaire correspondant à celle de l'alvéole deux faces appariées 10 et 11, l'une sur le fût, l'autre sur le porte-outil, empêchent la rotation du pic et la face ou arête de coupe avant 13 de chaque pic présente par rapport à une ligne radiale 15 reliant l'axe de la tête à l'extrémité radialement la plus proche de ladite face ou arête une inclinaison comprise entre un angle de coupe négatif de 12 1/2 degrés et un angle de coupe positif de 12 1/2 degrés . Il en résulte un bon dégagement de la tête et une bonne longévité des pics.This cutting head is of the type of those on the peripheral face of which are fixed tool holders for the assembly of interchangeable picks. In the head according to the invention, the tool holders 4, the cell 6 of which has a circular section, are mounted so that the axis 7 of the cell forms an angle of 35 degrees to 45 degrees with a radial line 8 connecting the axis of the head to the center of the outer end of the cell, the peaks are cutting peaks of the radial type, provided with a shaft 9 of circular section corresponding to that of the cell, two matched faces 10 and 11, one on the shank, the other on the tool holder, prevent rotation of the pick and the front cutting face or edge 13 of each pick present with respect to a radial line 15 connecting the axis of the head at the end radially closest to said face or ridge an inclination between a negative rake angle of 12 1/2 degrees and a positive rake angle of 12 1/2 degrees. This results in good head clearance and good longevity of the picks.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB29900/77A GB1527588A (en) | 1977-07-15 | 1977-07-15 | Rotary rock cutting heads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2397515A1 true FR2397515A1 (en) | 1979-02-09 |
Family
ID=10299027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7809979A Withdrawn FR2397515A1 (en) | 1977-07-15 | 1978-03-29 | ROTATING HAVING HEAD FOR ROCK |
Country Status (5)
| Country | Link |
|---|---|
| AU (1) | AU2988377A (en) |
| DE (1) | DE2756446A1 (en) |
| FR (1) | FR2397515A1 (en) |
| GB (1) | GB1527588A (en) |
| ZA (1) | ZA776141B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4753299A (en) * | 1986-05-02 | 1988-06-28 | Meyers Thomas A | Grader blade assembly and pick therefor |
| US4883129A (en) * | 1988-12-16 | 1989-11-28 | Caterpillar Inc. | Bit assembly utilizing carbide insert |
-
1977
- 1977-07-15 GB GB29900/77A patent/GB1527588A/en not_active Expired
- 1977-10-14 ZA ZA00776141A patent/ZA776141B/en unknown
- 1977-10-20 AU AU29883/77A patent/AU2988377A/en active Pending
- 1977-12-17 DE DE19772756446 patent/DE2756446A1/en active Pending
-
1978
- 1978-03-29 FR FR7809979A patent/FR2397515A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| GB1527588A (en) | 1978-10-04 |
| AU2988377A (en) | 1979-04-26 |
| ZA776141B (en) | 1978-06-28 |
| DE2756446A1 (en) | 1979-01-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |