CA2134396A1 - Diamond/boron nitride coated excavating tool cutting insert - Google Patents
Diamond/boron nitride coated excavating tool cutting insertInfo
- Publication number
- CA2134396A1 CA2134396A1 CA002134396A CA2134396A CA2134396A1 CA 2134396 A1 CA2134396 A1 CA 2134396A1 CA 002134396 A CA002134396 A CA 002134396A CA 2134396 A CA2134396 A CA 2134396A CA 2134396 A1 CA2134396 A1 CA 2134396A1
- Authority
- CA
- Canada
- Prior art keywords
- tip portion
- tool according
- shoulder
- coating
- tool
- 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.)
- Abandoned
Links
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 9
- 239000010432 diamond Substances 0.000 title claims abstract description 9
- 229910052582 BN Inorganic materials 0.000 title claims abstract 3
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 title claims abstract 3
- 239000011248 coating agent Substances 0.000 claims abstract description 16
- 238000000576 coating method Methods 0.000 claims abstract description 16
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims 6
- 239000010410 layer Substances 0.000 claims 4
- 239000000463 material Substances 0.000 claims 4
- 239000002356 single layer Substances 0.000 claims 2
- 229910052796 boron Inorganic materials 0.000 claims 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 2
- 241000517645 Abra Species 0.000 description 1
- 241000136406 Comones Species 0.000 description 1
- 241000282337 Nasua nasua Species 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000036651 mood Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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 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)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Earth Drilling (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A diamond/cubic boron nitride coated low energy cutting insert for an excavating tool. The insert includes a generally conical tip portion, an elongated intermediate portion, a shoulder and a contact surface which attaches to a supporting surface of the tool body. The intermediate portion of the insert includes a concave surface portion and the coating is provided on the tip portion and optionally on the intermediate portion and the shoulder.
A diamond/cubic boron nitride coated low energy cutting insert for an excavating tool. The insert includes a generally conical tip portion, an elongated intermediate portion, a shoulder and a contact surface which attaches to a supporting surface of the tool body. The intermediate portion of the insert includes a concave surface portion and the coating is provided on the tip portion and optionally on the intermediate portion and the shoulder.
Description
'~4 10/20 10:50 1Z~48 20 2O108~ SANDVIK PATENT ~ GO~LING IZl003/Oll ` ` 213~396 - 1 .
DL~MONDJBO~lON NX~R~E COA~
EXCA~ ~)OL Ctm~G I~
'~ , , pEdic~on i~ rdated to y pl~atlon S~rlal No. 07/708,058, fLbd Mlly 301 1991 lnow U.S. Pa~ No. 5,161,8S9), A oon~nu~on of app~ on Ser. No. 07!517,~23, a~ y 1, 1990, now abando~ed, which it a oon~nuati~n of ap~Jlca~on Ser. No. 06/586,818, fi.W M~i~6, 1984 (now l~.S.
Pat. No. 4,938,538).
Iho prosult In~ren~on relato~ to a ~l hr b~ or au a~ of ~d ma~, SUch ~s ~t, compd~g a ~401 hiy a~ ~
~to, for ~n~ancc by bs~g. Tho c-lt~ h fonned wi~ a gcnerally OOMCal tlp pO~ d p~ with a ~lild wl~ Dbl~det to ~t 4~n~t a suppo~ surhc¢ ~ tho tod body.
Tbe pu~e of ~ to p~ovid~ a wear~ ~ant t4~1 of the tb~t tho ~lc ~ low that ~he a~n~ L~e~t ~11 ~ot low~ ovan dudn~ worldng in :- .
~o aooom~an~ dtawings, h wh~ o~e em~ i~ sbQwn by way of 15 oo bo unt~Qood tbat ~ em~od~t i~ orly il~ vo of tbc n~tlon and th~ va~iow m~ ~eo may bo n~do wl~n ~o sc.ope : ~ ~ of ~o ~
. , .: .-:`:`: .. ', ~ . . .
~ ~tiO~ ~cav~a~ tool for bre~ ~d ma~, oo~g ~ don~od tool body h~.a~ ond wlth a di~ r and a ou~ u ~ a ~uttl~g ~t ha~ine a war rosis~ant lay~r on an a~poset wo~ ~u~ ~eof, tho i~ t bdng of b~rd mep~ g ~p pordan, ~ do0ga1ed in~m~hb po~ ~d a ~ould, ~# tip pordon be~ ~e~y ooDic~ he ~houlder h~vin~ a dhmoter subst~lly ~: larger tb~n ~he m~dmum dialDebr of tho ~p po~oa, tbe ~nlenned~ por~on .
,-.
:~ .
'1~4 10~20 10:51 ~H 2H 2~1U8~ S~NDVIK PATENT ~l~ C'OWLING la~Où4/014 ` 213~3~6 .
DL~MONDJBO~lON NX~R~E COA~
EXCA~ ~)OL Ctm~G I~
'~ , , pEdic~on i~ rdated to y pl~atlon S~rlal No. 07/708,058, fLbd Mlly 301 1991 lnow U.S. Pa~ No. 5,161,8S9), A oon~nu~on of app~ on Ser. No. 07!517,~23, a~ y 1, 1990, now abando~ed, which it a oon~nuati~n of ap~Jlca~on Ser. No. 06/586,818, fi.W M~i~6, 1984 (now l~.S.
Pat. No. 4,938,538).
Iho prosult In~ren~on relato~ to a ~l hr b~ or au a~ of ~d ma~, SUch ~s ~t, compd~g a ~401 hiy a~ ~
~to, for ~n~ancc by bs~g. Tho c-lt~ h fonned wi~ a gcnerally OOMCal tlp pO~ d p~ with a ~lild wl~ Dbl~det to ~t 4~n~t a suppo~ surhc¢ ~ tho tod body.
Tbe pu~e of ~ to p~ovid~ a wear~ ~ant t4~1 of the tb~t tho ~lc ~ low that ~he a~n~ L~e~t ~11 ~ot low~ ovan dudn~ worldng in :- .
~o aooom~an~ dtawings, h wh~ o~e em~ i~ sbQwn by way of 15 oo bo unt~Qood tbat ~ em~od~t i~ orly il~ vo of tbc n~tlon and th~ va~iow m~ ~eo may bo n~do wl~n ~o sc.ope : ~ ~ of ~o ~
. , .: .-:`:`: .. ', ~ . . .
~ ~tiO~ ~cav~a~ tool for bre~ ~d ma~, oo~g ~ don~od tool body h~.a~ ond wlth a di~ r and a ou~ u ~ a ~uttl~g ~t ha~ine a war rosis~ant lay~r on an a~poset wo~ ~u~ ~eof, tho i~ t bdng of b~rd mep~ g ~p pordan, ~ do0ga1ed in~m~hb po~ ~d a ~ould, ~# tip pordon be~ ~e~y ooDic~ he ~houlder h~vin~ a dhmoter subst~lly ~: larger tb~n ~he m~dmum dialDebr of tho ~p po~oa, tbe ~nlenned~ por~on .
,-.
:~ .
'1~4 10~20 10:51 ~H 2H 2~1U8~ S~NDVIK PATENT ~l~ C'OWLING la~Où4/014 ` 213~3~6 .
bdn~ inbgIal wi~ and ¢xtendsng bctwoen tho ~p por~on an~ ~ should~r so as to de~o an ab qpt transitlon fro~ o ~p po~on, tho interm~o portton having ~ ma%imum diametor which is ~ubsta~ally 1~ tban ~o diameter o~ the tool body end, the ~nte~med~ato ~oa induting a concave s~aco p~on e~cto~ldine r~laUy outwa~y bohve~ Iho tq~ por~n ~nd ~e s40uldor, ~4e shouldo~ be~ î~eua11y joino~ to the wDca~o ~ ~r~oo, ~nd ~o iAsolt including a ~anv~y ~acing oonta~ ~ a~achod t~ por~ne ~ce of ~e tool body. ..
~ ~v~n~ ~Iso p~ida a ~vo~r ~nt ro~lc e~ng lool for dbme~ and a supporang surhco, a cuttin~ ~sett hn~ng a w~ ~wistant coa~n~ on rn o.~pwet wod~ surS~ roof, tbo ~t bdne of h~rd metal g A gea~y c~ p pOa~OII, t ~houlder ~ a dianNtor subs~ally l~r ~in the ma~{mum dumet~ of tho dp por~n, ~ elongokd intenned ate .
por~ int~ wl~h ~nd ~ua~ a~y aad ~dially botw~ tlio oodca1 ~p and tho sho~dder, ddlnin~ au ab~ c g~norall~
conk~ dp p~, ~d h~iins a m~aum d~ wh~cb is subslan~a11y l~ss tba~ dle diam~ ~ U~c tool body ond, thc ~t~ p~on oompnsing a coaca~ ~c po~, ~c thou~ _y~ ~ CwuaYe ~e ~ ~
pofflou, ~d a r~w~ly *~ w~ urfaco a~od to lho ~g of ~e tool body.
~: ~ to ~ious fo~s ~f t~o Jn~do~"ho we~r rcsist~nt coa~ing caQ bo of d~d ind/a~ cubic bor~n ~ltrite wi~ out ~o or more }nt~tc ~amond lay~a ~uch as ~, I~C or ~. Tho concavo surfaco po~don c~q h~re a ~t ~dlw of cuN~re. Ih ~, ~e dis~nce ta) to tho ~lly outumost pordon of ~o r~y f~ng cont~ hcc of ~o sho~der can be la~er Ihan ~e dis~ om ~o ~upt ~laon to tho a~dally ~o w~ostp~ of tlie tippo~on, Thc sm~ dl~ r (t) of the ~o ~ pordoa can bo ~1~ tha~ the di~o ~a tb) f~ e a~lly - ' ' . . ' , 1 , ", , ~ , , , " ,~ ` , , "
.~ . .. , ,, . ,: , ,.;
'~4 10~20 10:51 ~40 2~ 2010811 9AND~'IN P~Tf~ ~ ~0WLING IZlOn5/014 . ' '`'.~;
for~ardmo~ po~ of tho dp po~on to ~o ~adislly ou~mo~ por~n of t~lo ~y faci~K oonhct surhco of the should*.
.
~:U:; ' , , ~IG. 1 show~ a slde vlcw, p~iy h rec~ , of pdar ~ 1401 fo~
brealdng hard ~tedal;
PIG~ 2 ~ side view, p~ly iA ~ a~r pdar ~ tool;
p FIU. 4 show~ on ~ eDIargtd ~oab tl~ cun~ h~ ~ th~ ~ ~n ir~ . .
P~G. 3. t . ~
be v~ fignDos hav~ gl~n ~e samo Tool~ o q pc ;n q~os~n ~e u~y mountod ~ota~blj ~n a tool older, wh~ch ~ ~m ~s ~dbd to a~ tw~adng n~, wch as a road pl~llU _ar a ~in~ m~ Duo ~ ~ ro~o~ d4 tool Is sdf~
~OD~. l~o ma~no ~t be of tbo type tis~od in ~:~: U.S.Pal~tNo.4~12,~5S,tho of wblc~ eby ~a~g ~f ~ ~t m~ for l~ce for g h ~o~d ~It (m~ ob ~o u~od o ~ q,pe Jbow~ 1n Fla. 1.
: . This ~*a ~ a ~aol boty 10~ of ~teol snd a cu~lng i~ort llA of h~
wbl~ ~ tost ~t a ~ co l4A on ~i body l~ IDe rar ~ J~u*co 20A o1he ~r l3~ i~ b~zot:to lho supp~ ~ce 14A. ~ho cut~ l~ert llA iJ po~dod ~th ~ coniall lSA which 1~ loated b~woen Iho ~p ~d~ 12~ and the shoulder 13A. Tl~ p~n lSA _ tbc portloA of ~c tool body lOA
tl~e cut~ne ins~ tlA *om ~ w~r ~ would ~awo t~e cutting . ~ IDsert :llA to ~a ~090. Whal we~ re~t m~ 4 e7~0t, ~r ins~qco ~ . -, . . . .
?`~
'~4 ln~20 10:~2 2S4~ 2~ 2~108~1 _9~.NDYIK PATENT ~ GOWLING lzloo~5~ol4 ., duri~g mi~line Ul pourod asp)~alt, the ~p po~tio~ 12A become- blunt~ended upon some wear of tho cut~ng insert llA. This wear Increase~ ukod cutting *r~C, When millhg in poured asphalt, the inc~aso of thc ~oqul~d cu~
force snieht evon havc the ~e~ult th~t tbo mad pl~n~ns machlne doos n~t manage Ono way of docre~ tl# cu~ urc r~ for worn ~ols wo~d be to use a t~l of th~ ~ype shown ~n ~G. 2 ~ce tbo al~ insort 1 lB has a smalIer di~lm~ ~an the cuttinl~ in~t llA. Howw~, ~his shou1d mam that tho po~on 16B of ~ tool body 10B su~rou~ ~e cu~ insut llB ~pidly would be ~bradod, th~y c~n~ t~e cutthe ~nsert llB to ge~ looso. Thus, cut~ serts of ~ tJ~pe sho~n in FIG. 2 are s~t4~b f;: r us s ~olely where ~o hard m~ de~nes tho ~ o~ ~e lool, for Inst~noe m~lling in conc~to.
Accotdin~ to thc inven~oa, a low ~er~y anac~ tool is Qrovidod wbich includes a w~ar resis~nt co~tin~ on a culting ~t ~ the form of a ca~
whereln the c~ i~ of a ma~l ~ than t~o i~ For ulstance, the iasort ~ bo a cemalt~ d d~ co~ ca~ bo dhmond and/or cubic boro~ n~ide. 'Iho coa~ am bo nppli~d on the c.~posed surbce of dle insort with or wl~out ane or moro Intermdi~ non di~mood layes~ . TiC, te np~ ~ro~ ure~/ElP) or olher oonYen~ al te~bnique. The wear ~ coatin~ ~d int~c Layen c~ each ~vo ~ ~nes~ of iabout ~.O to about~mi ~d the tot~l t~ of the c~ can reac~l S~m or more d~d~ng on ~ho ~i of each layer ~nt numbcr of layers.
For ~n~:c, the oo~ c~n i~cludc so~ ~ays of d1arnond ~ ated by non dismond b!~ers. ltT.S. Patent Nos. S,154,245 ~ ,707,384, ~e di~closures ~ which a~ he~oby ~d by refce ce, tis~oso seve~
diamond a~n~ tecbn~ques whi~h a~ bo usod hr yply}ng tho ~oaing.
l'ho w~ar rosis~nt coati~ ~ows the gcome~y of the ~ to be main~incd for a lo~ier ~mo th~ dciq~ ~e amount of dust cr~od by the tool, reduciag ~o cuttin~ forces, reduclnlJ fotces a~ng, on ~he o~ol, reduc~
heat cre~ed by ~o cutting ~ of ~e tool ~t reducinl~ ~e p~ iq~ of -;
: ' ' . - , ~ . ' ' . -'1~4 10~20 10:52 'ZS4ti 2~ 2~1118h SANDVIK PAI'ENT ~ 1 GnWLI~ b~10()7/014 .
spa~l~g w~cb could oth~sc ocalr tuo to ~o conlact b~nveon ~o comon~
carbide ~ol and ~c ma~ acaYated.
A~ ~hown ln ~GS. 3 ~d 4, ~c cutllng inse~t 11 in a too~ accordlng to tho Lnven~on is provided wi~ t~odhto portlon 17 behveen Ihe ~
po~on 12 and tho sboulder 13. Tbo into~ le pO~Q compd~ a con~a ~e por~o~ 17~. Due to ~ intennodi~to S~co por~on 17, tho requ~ot ¢ut~ne forco is m~n~ot low cven whon ~ o~ 12 becomes worn, sincc ~ s~zo ra~i~ ~ea~l~ the ~m~ as ~e ~p w~ daw~
steea ~n tllo tool bod~ 10 ~ t p~n~e abras~on. ~is pso~ion ~s ps~d by ~e coAcave p~on 17' and thc ~houlder 13.
The we~r resis~ coating 60 can bo appDed on ~ outer ~ of ~ ~ -tip 12, ~o intonnediate portion 17 andlor dlc ~ 13 ln a~y ~le pa~ whic~ completely cove~s or pa~ly co~ ~c worldD~ surface.
don ~rl bcated sd~acent tD thc d~ p~OQ 12. ~ tl~ nbodimcnt, ~e d~ce ~ om Iho t~nsi~on 18 ~otweo~ p ~n l2 and d~e .
int~te po~ 17 to ~e ~di~lb ~most portion 19 of ~ho sear coQlaCt surfi~c 20.Qf ~ d q~ 13 ~s l~ger ~ tho ~ ~b" firom ~N t~nsi~on 18 to th~ a~dally fon~rdntost por~n of ~e ~p pordon 12. Tho ~ar con~
surf~ce 201s ~tendod tO ~ost a~Dst tlu ~ surfw 14 of ~e k~ol body 0.
F~, In ~c illu~Sod o~bodi~ent~ ~o s~t.diasnder ~d~ of the ~Ye po~aA 17I is smsllo~ 1~ thc Aq~ of ~ ~bove-defined di~ta~ces ~a"
and "b~. ~ con~v~ p~ 171 i~ p~dod ud~ A codnt ~S of Clm~ WhiC~ Qr ti~l 1,$ d bUt bi~r th~ O,S d.
~ tall~dalb tO ~e u~ot pa~ 171. .
..
,,: ` .
~. . - ~ :
'~'. r:~`.r, 1 . , i . -~'''''.`''; "~ ' ` ` ':
~" ~ :, ,~,', ~.~ '~' '' ~`' ' "''`
~ `;`'~" ~"' " ' ~' ~ '` ' ' 'N~ 10~20 lO:SJ S4~ Yi~ YOlO~la 9~ . (;IJWL~ IG ClloOq~014 ~ . ~ . ~
~ ~e illus~d embodime~t the cuUlng ~nsort is peovidcd ~vith ~ rearpordon pr~e~ns lea~y *om ~o sho~d 13. ~e cnd~ co of ~
yor~ ~ ~anar. n n~ght, howev~r, b~ ~ccesscd, fo~ t cquld bc h~-sphodcal ar o~ ~ Senal W~ lus~ed 1~ Swcd-~ Pat~t ~p~io~on No. 8400Q69 0. Thc botto~ of d tecess ~t rost ~ai~st ~ y shapd ptotruslon on tho tool body. ot, a~t~vely" ~e rooo~s m~ebt pr~lvlde a ca~r. *, .......
a fb~or m~ on, tbe cu~ ~n~ misht bc m~te wi~out a ~r pr4ioodo~. The ~ear ~d su~ of dle cutd~ iose~t, ~c tho uld surfilcc of Ihe shoulder, ant tbo ~ f~t surhce oOE Ihe tool ~ody mi~t be desi~ed ~cor~ng to any o~ the abovo iltema~.
th~ pre~ t ~v~t~ h~ beo~ do~ot 1~ ~ wl~
p~f~od cmbod~ theroof, it v~l be ~pp~ by ~! ~ ~ ~ art ~lut addi~o~, modlfl~os, sub~tuti~s, a~d dde~o~ not ~ifia lly da~d may bo m~de ~out depa~ md ~ of ~e i~v~all u dofi~ed in th~ ~pendod cl~i~s;
"" ' ' . ' , , .
~ : , , -~ . .:
: , ....
- . ,- : . .
~ ~v~n~ ~Iso p~ida a ~vo~r ~nt ro~lc e~ng lool for dbme~ and a supporang surhco, a cuttin~ ~sett hn~ng a w~ ~wistant coa~n~ on rn o.~pwet wod~ surS~ roof, tbo ~t bdne of h~rd metal g A gea~y c~ p pOa~OII, t ~houlder ~ a dianNtor subs~ally l~r ~in the ma~{mum dumet~ of tho dp por~n, ~ elongokd intenned ate .
por~ int~ wl~h ~nd ~ua~ a~y aad ~dially botw~ tlio oodca1 ~p and tho sho~dder, ddlnin~ au ab~ c g~norall~
conk~ dp p~, ~d h~iins a m~aum d~ wh~cb is subslan~a11y l~ss tba~ dle diam~ ~ U~c tool body ond, thc ~t~ p~on oompnsing a coaca~ ~c po~, ~c thou~ _y~ ~ CwuaYe ~e ~ ~
pofflou, ~d a r~w~ly *~ w~ urfaco a~od to lho ~g of ~e tool body.
~: ~ to ~ious fo~s ~f t~o Jn~do~"ho we~r rcsist~nt coa~ing caQ bo of d~d ind/a~ cubic bor~n ~ltrite wi~ out ~o or more }nt~tc ~amond lay~a ~uch as ~, I~C or ~. Tho concavo surfaco po~don c~q h~re a ~t ~dlw of cuN~re. Ih ~, ~e dis~nce ta) to tho ~lly outumost pordon of ~o r~y f~ng cont~ hcc of ~o sho~der can be la~er Ihan ~e dis~ om ~o ~upt ~laon to tho a~dally ~o w~ostp~ of tlie tippo~on, Thc sm~ dl~ r (t) of the ~o ~ pordoa can bo ~1~ tha~ the di~o ~a tb) f~ e a~lly - ' ' . . ' , 1 , ", , ~ , , , " ,~ ` , , "
.~ . .. , ,, . ,: , ,.;
'~4 10~20 10:51 ~40 2~ 2010811 9AND~'IN P~Tf~ ~ ~0WLING IZlOn5/014 . ' '`'.~;
for~ardmo~ po~ of tho dp po~on to ~o ~adislly ou~mo~ por~n of t~lo ~y faci~K oonhct surhco of the should*.
.
~:U:; ' , , ~IG. 1 show~ a slde vlcw, p~iy h rec~ , of pdar ~ 1401 fo~
brealdng hard ~tedal;
PIG~ 2 ~ side view, p~ly iA ~ a~r pdar ~ tool;
p FIU. 4 show~ on ~ eDIargtd ~oab tl~ cun~ h~ ~ th~ ~ ~n ir~ . .
P~G. 3. t . ~
be v~ fignDos hav~ gl~n ~e samo Tool~ o q pc ;n q~os~n ~e u~y mountod ~ota~blj ~n a tool older, wh~ch ~ ~m ~s ~dbd to a~ tw~adng n~, wch as a road pl~llU _ar a ~in~ m~ Duo ~ ~ ro~o~ d4 tool Is sdf~
~OD~. l~o ma~no ~t be of tbo type tis~od in ~:~: U.S.Pal~tNo.4~12,~5S,tho of wblc~ eby ~a~g ~f ~ ~t m~ for l~ce for g h ~o~d ~It (m~ ob ~o u~od o ~ q,pe Jbow~ 1n Fla. 1.
: . This ~*a ~ a ~aol boty 10~ of ~teol snd a cu~lng i~ort llA of h~
wbl~ ~ tost ~t a ~ co l4A on ~i body l~ IDe rar ~ J~u*co 20A o1he ~r l3~ i~ b~zot:to lho supp~ ~ce 14A. ~ho cut~ l~ert llA iJ po~dod ~th ~ coniall lSA which 1~ loated b~woen Iho ~p ~d~ 12~ and the shoulder 13A. Tl~ p~n lSA _ tbc portloA of ~c tool body lOA
tl~e cut~ne ins~ tlA *om ~ w~r ~ would ~awo t~e cutting . ~ IDsert :llA to ~a ~090. Whal we~ re~t m~ 4 e7~0t, ~r ins~qco ~ . -, . . . .
?`~
'~4 ln~20 10:~2 2S4~ 2~ 2~108~1 _9~.NDYIK PATENT ~ GOWLING lzloo~5~ol4 ., duri~g mi~line Ul pourod asp)~alt, the ~p po~tio~ 12A become- blunt~ended upon some wear of tho cut~ng insert llA. This wear Increase~ ukod cutting *r~C, When millhg in poured asphalt, the inc~aso of thc ~oqul~d cu~
force snieht evon havc the ~e~ult th~t tbo mad pl~n~ns machlne doos n~t manage Ono way of docre~ tl# cu~ urc r~ for worn ~ols wo~d be to use a t~l of th~ ~ype shown ~n ~G. 2 ~ce tbo al~ insort 1 lB has a smalIer di~lm~ ~an the cuttinl~ in~t llA. Howw~, ~his shou1d mam that tho po~on 16B of ~ tool body 10B su~rou~ ~e cu~ insut llB ~pidly would be ~bradod, th~y c~n~ t~e cutthe ~nsert llB to ge~ looso. Thus, cut~ serts of ~ tJ~pe sho~n in FIG. 2 are s~t4~b f;: r us s ~olely where ~o hard m~ de~nes tho ~ o~ ~e lool, for Inst~noe m~lling in conc~to.
Accotdin~ to thc inven~oa, a low ~er~y anac~ tool is Qrovidod wbich includes a w~ar resis~nt co~tin~ on a culting ~t ~ the form of a ca~
whereln the c~ i~ of a ma~l ~ than t~o i~ For ulstance, the iasort ~ bo a cemalt~ d d~ co~ ca~ bo dhmond and/or cubic boro~ n~ide. 'Iho coa~ am bo nppli~d on the c.~posed surbce of dle insort with or wl~out ane or moro Intermdi~ non di~mood layes~ . TiC, te np~ ~ro~ ure~/ElP) or olher oonYen~ al te~bnique. The wear ~ coatin~ ~d int~c Layen c~ each ~vo ~ ~nes~ of iabout ~.O to about~mi ~d the tot~l t~ of the c~ can reac~l S~m or more d~d~ng on ~ho ~i of each layer ~nt numbcr of layers.
For ~n~:c, the oo~ c~n i~cludc so~ ~ays of d1arnond ~ ated by non dismond b!~ers. ltT.S. Patent Nos. S,154,245 ~ ,707,384, ~e di~closures ~ which a~ he~oby ~d by refce ce, tis~oso seve~
diamond a~n~ tecbn~ques whi~h a~ bo usod hr yply}ng tho ~oaing.
l'ho w~ar rosis~nt coati~ ~ows the gcome~y of the ~ to be main~incd for a lo~ier ~mo th~ dciq~ ~e amount of dust cr~od by the tool, reduciag ~o cuttin~ forces, reduclnlJ fotces a~ng, on ~he o~ol, reduc~
heat cre~ed by ~o cutting ~ of ~e tool ~t reducinl~ ~e p~ iq~ of -;
: ' ' . - , ~ . ' ' . -'1~4 10~20 10:52 'ZS4ti 2~ 2~1118h SANDVIK PAI'ENT ~ 1 GnWLI~ b~10()7/014 .
spa~l~g w~cb could oth~sc ocalr tuo to ~o conlact b~nveon ~o comon~
carbide ~ol and ~c ma~ acaYated.
A~ ~hown ln ~GS. 3 ~d 4, ~c cutllng inse~t 11 in a too~ accordlng to tho Lnven~on is provided wi~ t~odhto portlon 17 behveen Ihe ~
po~on 12 and tho sboulder 13. Tbo into~ le pO~Q compd~ a con~a ~e por~o~ 17~. Due to ~ intennodi~to S~co por~on 17, tho requ~ot ¢ut~ne forco is m~n~ot low cven whon ~ o~ 12 becomes worn, sincc ~ s~zo ra~i~ ~ea~l~ the ~m~ as ~e ~p w~ daw~
steea ~n tllo tool bod~ 10 ~ t p~n~e abras~on. ~is pso~ion ~s ps~d by ~e coAcave p~on 17' and thc ~houlder 13.
The we~r resis~ coating 60 can bo appDed on ~ outer ~ of ~ ~ -tip 12, ~o intonnediate portion 17 andlor dlc ~ 13 ln a~y ~le pa~ whic~ completely cove~s or pa~ly co~ ~c worldD~ surface.
don ~rl bcated sd~acent tD thc d~ p~OQ 12. ~ tl~ nbodimcnt, ~e d~ce ~ om Iho t~nsi~on 18 ~otweo~ p ~n l2 and d~e .
int~te po~ 17 to ~e ~di~lb ~most portion 19 of ~ho sear coQlaCt surfi~c 20.Qf ~ d q~ 13 ~s l~ger ~ tho ~ ~b" firom ~N t~nsi~on 18 to th~ a~dally fon~rdntost por~n of ~e ~p pordon 12. Tho ~ar con~
surf~ce 201s ~tendod tO ~ost a~Dst tlu ~ surfw 14 of ~e k~ol body 0.
F~, In ~c illu~Sod o~bodi~ent~ ~o s~t.diasnder ~d~ of the ~Ye po~aA 17I is smsllo~ 1~ thc Aq~ of ~ ~bove-defined di~ta~ces ~a"
and "b~. ~ con~v~ p~ 171 i~ p~dod ud~ A codnt ~S of Clm~ WhiC~ Qr ti~l 1,$ d bUt bi~r th~ O,S d.
~ tall~dalb tO ~e u~ot pa~ 171. .
..
,,: ` .
~. . - ~ :
'~'. r:~`.r, 1 . , i . -~'''''.`''; "~ ' ` ` ':
~" ~ :, ,~,', ~.~ '~' '' ~`' ' "''`
~ `;`'~" ~"' " ' ~' ~ '` ' ' 'N~ 10~20 lO:SJ S4~ Yi~ YOlO~la 9~ . (;IJWL~ IG ClloOq~014 ~ . ~ . ~
~ ~e illus~d embodime~t the cuUlng ~nsort is peovidcd ~vith ~ rearpordon pr~e~ns lea~y *om ~o sho~d 13. ~e cnd~ co of ~
yor~ ~ ~anar. n n~ght, howev~r, b~ ~ccesscd, fo~ t cquld bc h~-sphodcal ar o~ ~ Senal W~ lus~ed 1~ Swcd-~ Pat~t ~p~io~on No. 8400Q69 0. Thc botto~ of d tecess ~t rost ~ai~st ~ y shapd ptotruslon on tho tool body. ot, a~t~vely" ~e rooo~s m~ebt pr~lvlde a ca~r. *, .......
a fb~or m~ on, tbe cu~ ~n~ misht bc m~te wi~out a ~r pr4ioodo~. The ~ear ~d su~ of dle cutd~ iose~t, ~c tho uld surfilcc of Ihe shoulder, ant tbo ~ f~t surhce oOE Ihe tool ~ody mi~t be desi~ed ~cor~ng to any o~ the abovo iltema~.
th~ pre~ t ~v~t~ h~ beo~ do~ot 1~ ~ wl~
p~f~od cmbod~ theroof, it v~l be ~pp~ by ~! ~ ~ ~ art ~lut addi~o~, modlfl~os, sub~tuti~s, a~d dde~o~ not ~ifia lly da~d may bo m~de ~out depa~ md ~ of ~e i~v~all u dofi~ed in th~ ~pendod cl~i~s;
"" ' ' . ' , , .
~ : , , -~ . .:
: , ....
- . ,- : . .
Claims (18)
1. A rotatable excavating tool for breaking hard material, comprising:
an elongated tool body having an end with a diameter and a supporting surface;
a cutting insert of hard metal having a tip portion, an elongated intermediate portion and a shoulder, the tip portion being generally conical in shape, the should having a diameter substantially larger than the maximum diameter of the tip portion, the intermediate portion being integral with and extending between the tip portion and the shoulder so as to define an abrupt transition from the tip portion, the intermediate portion having a maximum diameter which is substantially less than the diameter of the tool body end, the intermediate portion including a concave surface portion extending radially outwardly between the tip portion and the shoulder, the shoulder being integrally joined to the concave surface portion, and the cutting insert having a rearwardly facing contact surface attached to the supporting surface of the tool body; and a wear resistant coating of material harder than the cutting insert, the coating being on at least an exposed working surface of the tip portion.
an elongated tool body having an end with a diameter and a supporting surface;
a cutting insert of hard metal having a tip portion, an elongated intermediate portion and a shoulder, the tip portion being generally conical in shape, the should having a diameter substantially larger than the maximum diameter of the tip portion, the intermediate portion being integral with and extending between the tip portion and the shoulder so as to define an abrupt transition from the tip portion, the intermediate portion having a maximum diameter which is substantially less than the diameter of the tool body end, the intermediate portion including a concave surface portion extending radially outwardly between the tip portion and the shoulder, the shoulder being integrally joined to the concave surface portion, and the cutting insert having a rearwardly facing contact surface attached to the supporting surface of the tool body; and a wear resistant coating of material harder than the cutting insert, the coating being on at least an exposed working surface of the tip portion.
2. A tool according to claim 1, wherein the coating comprises at least one layer of diamond and/or cubic boron altride with or without one or more non-diamond intermediate layers.
3. A tool according to claim 2, wherein the coating comprises a single layer of diamond.
4. A tool according to claim 1, wherein the concave surface portion has a constant radius of curvature.
5. A tool according to claim 1, wherein a distance (a) from the abrupt transition between the tip portion and the intermediate portion to the radially outermost portion of the rearwardly facing contact surface of the shoulder is larger than a distance (b) from the abrupt transition to the axiallyforwardmost portion of the tip portion.
6. A tool according to claim 5, wherein a smallest diameter (d) of the concave surface portion is smaller than the distance (a+b) from the axially forwardmost portion of the tip portion to the radially outermost portion of the rearwardly facing contact surface of the shoulder.
7. A tool according to claim 1, wherein the coating only covers the tip portion.
8. A tool according to claim 1, wherein the coating completely covers the tip portion and the intermediate portion.
9. A tool according to claim 1, wherein the coating completely covers the tip portion, the intermediate portion and the shoulder.
10. A rotatable excavating tool for breaking hard material, comprising:
an elongated tool body having an end with a diameter and a supporting surface;
a cutting insert of hard metal having a generally conical tip portion, a shoulder with a diameter substantially larger than the maximum diameter of the tip portion, an elongated intermediate portion integral with and extending axially and radially between the conical tip portion and the shoulder so as to define an abrupt transition from the tip portion, the intermediate portion having a maximum diameter which is substantially less than the diameter of the tool body end and the intermediate portion including a concave surface portion, the shoulder integrally joining the concave surface portion, and the insert including a rearwardly facing contact surface attached to the supporting surface of the tool body; and a wear resistant coating of material harder than the cutting insert, the coating being on at least an exposed working surface of the tip portion.
an elongated tool body having an end with a diameter and a supporting surface;
a cutting insert of hard metal having a generally conical tip portion, a shoulder with a diameter substantially larger than the maximum diameter of the tip portion, an elongated intermediate portion integral with and extending axially and radially between the conical tip portion and the shoulder so as to define an abrupt transition from the tip portion, the intermediate portion having a maximum diameter which is substantially less than the diameter of the tool body end and the intermediate portion including a concave surface portion, the shoulder integrally joining the concave surface portion, and the insert including a rearwardly facing contact surface attached to the supporting surface of the tool body; and a wear resistant coating of material harder than the cutting insert, the coating being on at least an exposed working surface of the tip portion.
11. A tool according a claim 10, wherein the coating comprises at least one layer of diamond and/or cubic boron nitride with or without one or more non-diamond intermediate layers.
12. A tool according to claim 11, wherein the coating comprises a single layer of diamond.
13. A tool according to claim 10, wherein the concave surface portion has a constant radius of curvature.
14. A tool according to claim 10, wherein a distance (a) from the abrupt transition between the tip portion and the intermediate portion to the radially outermost portion of the rearwardly facing contact surface of the shoulder is larger than a distance (b) from the abrupt transition to the axiallyforwardmost portion of the generally conical tip portion.
15. A tool according to claim 14, wherein a smallest diameter (d) of the concave surface portion is smaller than the distance (a+b) from the axially forwardmost portion of the tip portion to the radially outermost portion of the rearwardly facing contact surface of the shoulder.
16. A tool according to claim 10, wherein the coating only covers the tip portion.
17. A tool according to claim 10, wherein the coating completely covers the tip portion and the intermediate portion.
18. A tool according to claim 10, wherein the coating completely covers the tip portion, the intermediate portion and the shoulder.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14522393A | 1993-11-03 | 1993-11-03 | |
| US08/145,223 | 1993-11-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2134396A1 true CA2134396A1 (en) | 1995-05-04 |
Family
ID=22512134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002134396A Abandoned CA2134396A1 (en) | 1993-11-03 | 1994-10-26 | Diamond/boron nitride coated excavating tool cutting insert |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0651133B1 (en) |
| JP (1) | JPH07197768A (en) |
| AU (1) | AU7759294A (en) |
| CA (1) | CA2134396A1 (en) |
| DE (1) | DE69415764T2 (en) |
| ZA (1) | ZA948306B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5837071A (en) * | 1993-11-03 | 1998-11-17 | Sandvik Ab | Diamond coated cutting tool insert and method of making same |
| US6270165B1 (en) * | 1999-10-22 | 2001-08-07 | Sandvik Rock Tools, Inc. | Cutting tool for breaking hard material, and a cutting cap therefor |
| US6375272B1 (en) * | 2000-03-24 | 2002-04-23 | Kennametal Inc. | Rotatable cutting tool insert |
| 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 |
| US7959234B2 (en) * | 2008-03-15 | 2011-06-14 | Kennametal Inc. | Rotatable cutting tool with superhard cutting member |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4277106A (en) * | 1979-10-22 | 1981-07-07 | Syndrill Carbide Diamond Company | Self renewing working tip mining pick |
| SE450259C (en) * | 1983-03-23 | 1996-07-22 | Sandvik Ab | Tools for breaking or cutting solid materials such as asphalt |
| US5161859A (en) * | 1983-03-23 | 1992-11-10 | Santrade Limited | Excavating tool cutting insert |
| SE442305B (en) * | 1984-06-27 | 1985-12-16 | Santrade Ltd | PROCEDURE FOR CHEMICAL GAS DEPOSITION (CVD) FOR THE PREPARATION OF A DIAMOND COATED COMPOSITION BODY AND USE OF THE BODY |
| US4694918A (en) * | 1985-04-29 | 1987-09-22 | Smith International, Inc. | Rock bit with diamond tip inserts |
| US4811801A (en) * | 1988-03-16 | 1989-03-14 | Smith International, Inc. | Rock bits and inserts therefor |
| DE3926627A1 (en) * | 1989-08-11 | 1991-02-14 | Wahl Verschleiss Tech | CHISEL OR SIMILAR TOOL FOR RAW MATERIAL EXTRACTION OR RECYCLING |
| US4981328A (en) * | 1989-08-22 | 1991-01-01 | Kennametal Inc. | Rotatable tool having a carbide insert with bumps |
| US5154245A (en) * | 1990-04-19 | 1992-10-13 | Sandvik Ab | Diamond rock tools for percussive and rotary crushing rock drilling |
| SE9002135D0 (en) * | 1990-06-15 | 1990-06-15 | Sandvik Ab | IMPROVED TOOLS FOR PERCUSSIVE AND ROTARY CRUSCHING ROCK DRILLING PROVIDED WITH A DIAMOND LAYER |
-
1994
- 1994-10-21 ZA ZA948306A patent/ZA948306B/en unknown
- 1994-10-26 CA CA002134396A patent/CA2134396A1/en not_active Abandoned
- 1994-10-28 DE DE69415764T patent/DE69415764T2/en not_active Expired - Fee Related
- 1994-10-28 EP EP94850192A patent/EP0651133B1/en not_active Expired - Lifetime
- 1994-11-02 JP JP6269663A patent/JPH07197768A/en active Pending
- 1994-11-03 AU AU77592/94A patent/AU7759294A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| AU7759294A (en) | 1995-05-18 |
| EP0651133A3 (en) | 1995-08-09 |
| DE69415764D1 (en) | 1999-02-18 |
| DE69415764T2 (en) | 1999-05-20 |
| JPH07197768A (en) | 1995-08-01 |
| EP0651133A2 (en) | 1995-05-03 |
| ZA948306B (en) | 1995-06-22 |
| EP0651133B1 (en) | 1999-01-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |