GB2068040A - A tool for cutting rocks, ores and minerals - Google Patents

A tool for cutting rocks, ores and minerals Download PDF

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Publication number
GB2068040A
GB2068040A GB8017094A GB8017094A GB2068040A GB 2068040 A GB2068040 A GB 2068040A GB 8017094 A GB8017094 A GB 8017094A GB 8017094 A GB8017094 A GB 8017094A GB 2068040 A GB2068040 A GB 2068040A
Authority
GB
United Kingdom
Prior art keywords
cutter
tool
cutting
ores
minerals
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.)
Granted
Application number
GB8017094A
Other versions
GB2068040B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vedeckovyzkumny Uhelny Ustav
Original Assignee
Vedeckovyzkumny Uhelny Ustav
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Vedeckovyzkumny Uhelny Ustav filed Critical Vedeckovyzkumny Uhelny Ustav
Publication of GB2068040A publication Critical patent/GB2068040A/en
Application granted granted Critical
Publication of GB2068040B publication Critical patent/GB2068040B/en
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56—Button-type inserts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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 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

Abstract

A tool for cutting rocks, ores and minerals, the tool comprising a spherical cutter bit (1) embedded in a cutter body (2). The cutter bit (1) can be rigid with the cutter body (2) or it can be freely movable in relation to the cutter body (2). <IMAGE>

Description

SPECIFICATION A tool for cutting rocks, ores and minerals The invention relates to a tool for cutting rocks, ores and minerals.
Cutting tools of various shapes and sizes have been proposed for use in mining machines. In these previously proposed tools, the exposed portion of the cutter bits are cone-shaped with sharp or rounded apices or chisel-shaped with straight or rounded edge surfaces. These cutter bits are not very resistant to dynamic forces generated in cutting operations, particularly when cutting rocks, ores or minerals which are difficult to disintegrate.
These dynamic forces cause the exposed portion of the cutter bit to be destroyed whereupon the destruction of the whole cutter including cutter holders occurs rapidly if the cutter bits are not replaced in time.
According to the present invention there is provided a tool for cutting rocks, ores and minerals, the tool comprising a cutter body and a spherical cutter bit, a major portion of spherical cutter bit being embedded in the cutter body.
Further according to the present invention there is provided a tool for cutting rocks, ores and minerals, the tool comprising a spherical cutter bit embedded in a cutter body.
Tools embodying the invention will now be particularly described, by way of example with reference to the accompanying diagrammatic drawings in which Figures 1 and 2 are side views of tools for cutting rocks, ores and minerals.
The illustrated tool (Fig. 1) comprises a cutter body 2 which is rotatable about its longitudinal axis 3. A spherical cutter bit 1 of a hardened material is rigidly embedded in the cutter body 2.
The said longitudinal axis 3 passes centrally through the cutter bit 1.
In another embodiment of the cutting tool (Fig. 2) the spherical cutter bit 1 is slidable within a recess in the cutter body 2. More than half of the spherical cutter bit 1 is accommodated in the recess in the cutter body 2. In this embodiment, the cutter bit 1 is able to turn in any direction about its centre in the course of a cutting operation.
A spherical body has the greatest mass to surface area ratio of all bodies. Therefore a spherical cutter bit 1 is better able to withstand dynamic shocks or forces than conventional cutter bits which have sharp or slightly rounded cutting tips.
The above described tools are advantageous in that they are very resistant to dynamic forces generated during the cutting of rocks, ores and minerals. Therefore they are very efficient, particularly in the cutting of rocks, ores and minerals which are difficult to disintegrate.
1. A tool for cutting rocks, ores and minerals, the tool comprising a cutter body and a spherical cutter bit, a major portion of spherical cutter bit being embedded in the cutter body.
2. A tool according to claim 1, wherein the spherical cutter bit is rigid with the cutter body.
3. A tool according to claim 1, wherein the spherical cutter bit is slidable in relation to the cutter body.
4. A tool according to any one of claims 1 to 3, wherein the cutter body is rotatable about an axis which passes centrally through the spherical cutter bit.
5. A tool according to any one of claims 1 to 4, wherein the cutter bit is made of hardened material.
6. A tool for cutting rocks, ores and minerals, the tool comprising a spherical cutter bit embedded in a cutter body.
7. A tool for cutting rocks, ores and minerals substantially as hereinbefore described, with reference to Figures 1 and 2 of the accompanying drawings.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (7)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION A tool for cutting rocks, ores and minerals The invention relates to a tool for cutting rocks, ores and minerals. Cutting tools of various shapes and sizes have been proposed for use in mining machines. In these previously proposed tools, the exposed portion of the cutter bits are cone-shaped with sharp or rounded apices or chisel-shaped with straight or rounded edge surfaces. These cutter bits are not very resistant to dynamic forces generated in cutting operations, particularly when cutting rocks, ores or minerals which are difficult to disintegrate. These dynamic forces cause the exposed portion of the cutter bit to be destroyed whereupon the destruction of the whole cutter including cutter holders occurs rapidly if the cutter bits are not replaced in time. According to the present invention there is provided a tool for cutting rocks, ores and minerals, the tool comprising a cutter body and a spherical cutter bit, a major portion of spherical cutter bit being embedded in the cutter body. Further according to the present invention there is provided a tool for cutting rocks, ores and minerals, the tool comprising a spherical cutter bit embedded in a cutter body. Tools embodying the invention will now be particularly described, by way of example with reference to the accompanying diagrammatic drawings in which Figures 1 and 2 are side views of tools for cutting rocks, ores and minerals. The illustrated tool (Fig. 1) comprises a cutter body 2 which is rotatable about its longitudinal axis 3. A spherical cutter bit 1 of a hardened material is rigidly embedded in the cutter body 2. The said longitudinal axis 3 passes centrally through the cutter bit 1. In another embodiment of the cutting tool (Fig. 2) the spherical cutter bit 1 is slidable within a recess in the cutter body 2. More than half of the spherical cutter bit 1 is accommodated in the recess in the cutter body 2. In this embodiment, the cutter bit 1 is able to turn in any direction about its centre in the course of a cutting operation. A spherical body has the greatest mass to surface area ratio of all bodies. Therefore a spherical cutter bit 1 is better able to withstand dynamic shocks or forces than conventional cutter bits which have sharp or slightly rounded cutting tips. The above described tools are advantageous in that they are very resistant to dynamic forces generated during the cutting of rocks, ores and minerals. Therefore they are very efficient, particularly in the cutting of rocks, ores and minerals which are difficult to disintegrate. CLAIMS
1. A tool for cutting rocks, ores and minerals, the tool comprising a cutter body and a spherical cutter bit, a major portion of spherical cutter bit being embedded in the cutter body.
2. A tool according to claim 1, wherein the spherical cutter bit is rigid with the cutter body.
3. A tool according to claim 1, wherein the spherical cutter bit is slidable in relation to the cutter body.
4. A tool according to any one of claims 1 to 3, wherein the cutter body is rotatable about an axis which passes centrally through the spherical cutter bit.
5. A tool according to any one of claims 1 to 4, wherein the cutter bit is made of hardened material.
6. A tool for cutting rocks, ores and minerals, the tool comprising a spherical cutter bit embedded in a cutter body.
7. A tool for cutting rocks, ores and minerals substantially as hereinbefore described, with reference to Figures 1 and 2 of the accompanying drawings.
GB8017094A 1979-06-04 1980-05-23 Tool for cutting rocks ores and minerals Expired GB2068040B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS793812A CS209175B1 (en) 1979-06-04 1979-06-04 Cutter for rock disintegration

Publications (2)

Publication Number Publication Date
GB2068040A true GB2068040A (en) 1981-08-05
GB2068040B GB2068040B (en) 1983-03-16

Family

ID=5379307

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8017094A Expired GB2068040B (en) 1979-06-04 1980-05-23 Tool for cutting rocks ores and minerals

Country Status (5)

Country Link
AT (1) AT371569B (en)
CS (1) CS209175B1 (en)
DE (1) DE3019422C2 (en)
GB (1) GB2068040B (en)
SE (1) SE8004137L (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4967854A (en) * 1989-10-05 1990-11-06 Barnetche Gonzalez Eduardo Double cone cutting head for a drill bit
US20130026811A1 (en) * 2011-07-28 2013-01-31 Boundary Equipment Co. Ltd. Tool insert
US11339655B2 (en) 2018-04-17 2022-05-24 Betek Gmbh & Co. Kg Milling pick

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4484783A (en) * 1982-07-22 1984-11-27 Fansteel Inc. Retainer and wear sleeve for rotating mining bits
DE102018109148A1 (en) * 2018-04-17 2019-10-17 Betek Gmbh & Co. Kg Tooth

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3618683A (en) * 1968-12-16 1971-11-09 Ingersoll Rand Co Button bit
AT341978B (en) * 1976-04-14 1978-03-10 Voest Ag ROUND CHISEL

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4967854A (en) * 1989-10-05 1990-11-06 Barnetche Gonzalez Eduardo Double cone cutting head for a drill bit
US20130026811A1 (en) * 2011-07-28 2013-01-31 Boundary Equipment Co. Ltd. Tool insert
US9120243B2 (en) * 2011-07-28 2015-09-01 Boundary Equipment Co. Ltd. Tool insert
US11339655B2 (en) 2018-04-17 2022-05-24 Betek Gmbh & Co. Kg Milling pick

Also Published As

Publication number Publication date
ATA276080A (en) 1982-11-15
CS209175B1 (en) 1981-11-30
DE3019422C2 (en) 1986-03-20
AT371569B (en) 1983-07-11
GB2068040B (en) 1983-03-16
DE3019422A1 (en) 1980-12-11
SE8004137L (en) 1980-12-05

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee