CA2108318A1 - Eccentrically supported tools for excavating minerals, counterbalanced with reference to counterweights - Google Patents
Eccentrically supported tools for excavating minerals, counterbalanced with reference to counterweightsInfo
- Publication number
- CA2108318A1 CA2108318A1 CA002108318A CA2108318A CA2108318A1 CA 2108318 A1 CA2108318 A1 CA 2108318A1 CA 002108318 A CA002108318 A CA 002108318A CA 2108318 A CA2108318 A CA 2108318A CA 2108318 A1 CA2108318 A1 CA 2108318A1
- Authority
- CA
- Canada
- Prior art keywords
- tool
- eccentric drive
- ripping
- milling
- mass
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0032—Arrangements for preventing or isolating vibrations in parts of the machine
- B23Q11/0035—Arrangements for preventing or isolating vibrations in parts of the machine by adding or adjusting a mass, e.g. counterweights
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/26—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by impact tools, e.g. by chisels or other tools having a cutting edge
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Drilling And Boring (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Food-Manufacturing Devices (AREA)
- Earth Drilling (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Milling Processes (AREA)
Abstract
ABSTRACT
A propelled eccentric drive for superimposing a percussive action onto drilling,milling, ripping and compacting operations having tools which are compensated/counterbalanced with reference to predetermined counterweights.
A propelled eccentric drive for superimposing a percussive action onto drilling,milling, ripping and compacting operations having tools which are compensated/counterbalanced with reference to predetermined counterweights.
Description
2~l~8~ ~
DE5CPIIPTION OF SYSTEM AND 17~A~INGS
V3rious Syst~ms exiSt for superimposing a percussive action on tools for use in drilling, milling, ripping and similar operations. l~ese have th~ ~eneral advantage that they requlre a minimal forward thrust during use, making them considerably li0ht~r and mor~ sconomical to use than machines ~ormerly us~d f~r the same purpose~ The pres~nt invention, d~erib~d with rr~ference to diagrammatic illlJstra~ions only, has the si~nific~nt advantage tl~at counterweights for counterb~lsncing the eccentrically driven tools on which ths perGussive a~tion is suparimposed ns~d not be adJusted, se~ ~r corr~ted ~lh r~fer0nce to th~ tools, which is generally difficult on site. The tools th~mselv~s are compensated instead, wlth r~f~rance to the assem~y on which they are ~nstalled, and m~re particularly with raference ~o th3 counte~eiglrts ~f th~
assembly.
1 he as8embly may incl~de a rapidly rotatabl~, eccentric drive shaft for producing th~ r~quir~d superimposed petcu~siv~ forc~s, the shaR being optionally supported by a sin~le b~aring, or by a pair of bearin~s. The tools ofthe assembly may be slowly, ~re~ly rot~table wi~hout additional propulsion, or they may be separately propelled and slowly r~ta~bl~. A tool for use in an assembly according to the inv~ntion may be constibJted by a singl~ or a split, interchangeabl3 sl~ve. In other embodiments o~ the i~ention t~e sleeve may constitute a carrier for separately interchang~abte twls.
An assembly aec~rding to the pr~s~nt invention is shown in ngure 1 WhiCh includes a sl~ve having a diameter of 300mm and a width of 300mm, equipped wi~h 20 to ~0 milling tools. The sleeve may b~ driv8n at 3000rpm by m8ans of a motoi rated at between 4kW and SkW. A reducti~n y~a~ arrar~ement causes the sl~8ve to rotate at ~pproximat~ly 1 50rpm while oscillating at ~n amplitude of - 2 -- 2~8318 5mm Th~ ntion allows other similar means of propulsion t~ be used. In a furth~r ~mbodim~nt of ths invention (not illustrated~ the sleeve is rotat~bl0 a~appr~ximately 150rpm in opposition to th~ dir~ction of rotati~n of the eccentricdrive sha~t through frictional engagement ~etween the sle~ve and an adjacent work area.
The scvere p~rcussi~ action by the rotatin~ tool at comparative~ small applications of thrus~ is at~ributable to the hi~h r~ational speed of the eccentrically m~unted tool mass. Count~rbalancin0 ~nsures smooth nJnning conditions.
A compacting tool ac~or~ing to ~he inv~ntion may indud~ a cylindrical drum of circular or triangular cross-section, the drurn havin~ planar suffaces in the la~ter case.
A sleeve constituting a carrier for various tools may b~ provided for performingmillin~ or ripping op~rations in a single st~p, or in multipis steps. In yet a fur~her emb~diment of the inventi~n (not illustrated) a rotata~le cutting disk may be provid~d for working In ~xtremely hard rock formations whils ap,olying a thrust ~f s~veral hundred kilograrns only, compared to betw~en ZO ~nd 30 tonnes required ~or ~ther pri~r machinery. The ass~mbii~s d4scrib~d above g~n~raliy operat~ whil6 transferring or no vibration to the machine propelling the rotat~ble tooi. Even quartzitic and oth~r hard rock may be mill~d in this mannerwi~hout ad~itional cooling.
The assernbly shown in fl~ure :2 and defined in clairn~ 4 an~ 5 has the ~naral advantage that no s~parats propulsi~n for tools intendcd for use in millin0 ope~ations is rsquir~d. More particularly the cutting paths ~ ind~idual tools ar~
adjustabl0 for cutting greater ~epths into mason~, for e2wnple, witho~
ad~usting the eccentricity of an associated tool c~rrier.
Fi~ure ~ shows ons of several possibl~ embodiments o~ the ir~n~;~n, in wh~h referenc~ n~lmeral 1 denotes a drivs motor which propels an ecc~ntric drive sha~t ~ which is supported on two bearings 3. A r~duction ge~r arrangement 4, which incl~Jdes an internally toothed ring ~ear m~shing with a pinion connectsd to ~he motor 1 is provided for rotatin~ a tool c~rri~r 5 at a slower speed than th0 shaft 2. Th~ tool carrier 5 is support~d on th~ eccentric drive sh~ Z by means . . . . , . . . ., ~ . . ..
- - 2 ~ .3 ;~ 8 of bearings 6, and is freely rotatabl~ about lhe shaft. Re~erence numeral 7 denotes the central axis of the eccentriG port~on of the driY~ shaft 2. Referen~e numeral 8 d~not~s a s0~ of pra-sat count~ i0hts s~cur~d t~ th~ shaft ~. In the presen~ embodiment o~ th~ inv~ntion th~ mass of ~ slidabiy locatabl~, replaceabl~ sleeve 9, equipped with tools 10 and ~ in9 means, is compansat~d with reference to the count~rweights 8 b~fors bsing mounted on the carrier 5.
I:)ynamic balancing of the tooJs before installation on the eccentric drive is d~sirabl~ to minimis~ any stresses acting on the bearings mentioned above over ~xtended operating int~rvsls whila k~epin~ ener~y demands as low as possibl~. .
In flg~lre 2 reference nurneral 11 denotes a milling tool for us0 in ripping or planin~ operations. A bolt 12 or a similar fastening device is slide~ble in a slot 13 in the tool 11, and in its unsecured c~n~ition is displacsabl~ in relation to the tool. When the ~olt 12 is position~d as shown in figure 2 the tool 11 produces th~ small~st possible radial displacemen~ of th0 t~eth 15 during operati~n. On the other h~nd when the bolt 12 is pos~ioned at the point i~nt~ d by reference numeral 14 the r~dial amplitude of the oscillatin~ t~th 15 during operation is maximised. Reference numeral 16 identrfi~s ths centrai axis of an eocentric drivs shaR corresp~nding to the shaft 2 in figure 1, h~ving corr~sponding counterwei~hts. A fix~cl ref~rance point for the purposes of adjustin~ the tool 11 may be located o~Jtside th~ spaG~ occupi~d by the tool itself, particularly if the to~l is semi-circular or oth~rwiss shaped f~r the purposes ~ saving space.
The bolt 12 may ~llow r~dial and tangential displacement in relation to ths shaft 16. The assembly of figure 2 m~y b~ ad~pted for u~e in compact;ng operations by providing means for propellin~ a tool ~orresponding to the tool 11 in a gorward direction at optionally variable speeds.
Refer~nce numeral 16 serves to idant`fy an eccentric drive shaR corresponding to that shown in fi~ure 1, while excludin~ the driv~ motor 1. The balt 1~ as shown in figura 2, and at the position indioated by reference numeral 14, shows the allowable range of adjustment f~r th~ cutting t~eth 15, bearing in mind thatths bolt 12 may be secured b~tween ei~er of thes~ extremes while located in the slot 13. By option~liy adjusting ths tool 11 in a t~n~ential direction the ds~r~e ~f ~scillation by th~ tools 15 may b~ further modi~ied. Thls may ser.~ to~chi~v~ a desir0d oscillation wh~n a machine equipped with the tools 15 _ 4_ 2~3~
opsratcs from a stationary location. By setting th~ bolt 12 in the pos~ion shownin flgure 2 ~hs cu~ting t~sth 15 d~scrib~ small circular paths 12a whe~eas the t~eth descri~ lar~sr cuttins paths 14a when the bolt 12 i~ located in ths ~orresponding position 14. Thc amplitud~ of oscill~t;ons d~scrib~d by th~ axis 7 ~emains unaffected.
DE5CPIIPTION OF SYSTEM AND 17~A~INGS
V3rious Syst~ms exiSt for superimposing a percussive action on tools for use in drilling, milling, ripping and similar operations. l~ese have th~ ~eneral advantage that they requlre a minimal forward thrust during use, making them considerably li0ht~r and mor~ sconomical to use than machines ~ormerly us~d f~r the same purpose~ The pres~nt invention, d~erib~d with rr~ference to diagrammatic illlJstra~ions only, has the si~nific~nt advantage tl~at counterweights for counterb~lsncing the eccentrically driven tools on which ths perGussive a~tion is suparimposed ns~d not be adJusted, se~ ~r corr~ted ~lh r~fer0nce to th~ tools, which is generally difficult on site. The tools th~mselv~s are compensated instead, wlth r~f~rance to the assem~y on which they are ~nstalled, and m~re particularly with raference ~o th3 counte~eiglrts ~f th~
assembly.
1 he as8embly may incl~de a rapidly rotatabl~, eccentric drive shaft for producing th~ r~quir~d superimposed petcu~siv~ forc~s, the shaR being optionally supported by a sin~le b~aring, or by a pair of bearin~s. The tools ofthe assembly may be slowly, ~re~ly rot~table wi~hout additional propulsion, or they may be separately propelled and slowly r~ta~bl~. A tool for use in an assembly according to the inv~ntion may be constibJted by a singl~ or a split, interchangeabl3 sl~ve. In other embodiments o~ the i~ention t~e sleeve may constitute a carrier for separately interchang~abte twls.
An assembly aec~rding to the pr~s~nt invention is shown in ngure 1 WhiCh includes a sl~ve having a diameter of 300mm and a width of 300mm, equipped wi~h 20 to ~0 milling tools. The sleeve may b~ driv8n at 3000rpm by m8ans of a motoi rated at between 4kW and SkW. A reducti~n y~a~ arrar~ement causes the sl~8ve to rotate at ~pproximat~ly 1 50rpm while oscillating at ~n amplitude of - 2 -- 2~8318 5mm Th~ ntion allows other similar means of propulsion t~ be used. In a furth~r ~mbodim~nt of ths invention (not illustrated~ the sleeve is rotat~bl0 a~appr~ximately 150rpm in opposition to th~ dir~ction of rotati~n of the eccentricdrive sha~t through frictional engagement ~etween the sle~ve and an adjacent work area.
The scvere p~rcussi~ action by the rotatin~ tool at comparative~ small applications of thrus~ is at~ributable to the hi~h r~ational speed of the eccentrically m~unted tool mass. Count~rbalancin0 ~nsures smooth nJnning conditions.
A compacting tool ac~or~ing to ~he inv~ntion may indud~ a cylindrical drum of circular or triangular cross-section, the drurn havin~ planar suffaces in the la~ter case.
A sleeve constituting a carrier for various tools may b~ provided for performingmillin~ or ripping op~rations in a single st~p, or in multipis steps. In yet a fur~her emb~diment of the inventi~n (not illustrated) a rotata~le cutting disk may be provid~d for working In ~xtremely hard rock formations whils ap,olying a thrust ~f s~veral hundred kilograrns only, compared to betw~en ZO ~nd 30 tonnes required ~or ~ther pri~r machinery. The ass~mbii~s d4scrib~d above g~n~raliy operat~ whil6 transferring or no vibration to the machine propelling the rotat~ble tooi. Even quartzitic and oth~r hard rock may be mill~d in this mannerwi~hout ad~itional cooling.
The assernbly shown in fl~ure :2 and defined in clairn~ 4 an~ 5 has the ~naral advantage that no s~parats propulsi~n for tools intendcd for use in millin0 ope~ations is rsquir~d. More particularly the cutting paths ~ ind~idual tools ar~
adjustabl0 for cutting greater ~epths into mason~, for e2wnple, witho~
ad~usting the eccentricity of an associated tool c~rrier.
Fi~ure ~ shows ons of several possibl~ embodiments o~ the ir~n~;~n, in wh~h referenc~ n~lmeral 1 denotes a drivs motor which propels an ecc~ntric drive sha~t ~ which is supported on two bearings 3. A r~duction ge~r arrangement 4, which incl~Jdes an internally toothed ring ~ear m~shing with a pinion connectsd to ~he motor 1 is provided for rotatin~ a tool c~rri~r 5 at a slower speed than th0 shaft 2. Th~ tool carrier 5 is support~d on th~ eccentric drive sh~ Z by means . . . . , . . . ., ~ . . ..
- - 2 ~ .3 ;~ 8 of bearings 6, and is freely rotatabl~ about lhe shaft. Re~erence numeral 7 denotes the central axis of the eccentriG port~on of the driY~ shaft 2. Referen~e numeral 8 d~not~s a s0~ of pra-sat count~ i0hts s~cur~d t~ th~ shaft ~. In the presen~ embodiment o~ th~ inv~ntion th~ mass of ~ slidabiy locatabl~, replaceabl~ sleeve 9, equipped with tools 10 and ~ in9 means, is compansat~d with reference to the count~rweights 8 b~fors bsing mounted on the carrier 5.
I:)ynamic balancing of the tooJs before installation on the eccentric drive is d~sirabl~ to minimis~ any stresses acting on the bearings mentioned above over ~xtended operating int~rvsls whila k~epin~ ener~y demands as low as possibl~. .
In flg~lre 2 reference nurneral 11 denotes a milling tool for us0 in ripping or planin~ operations. A bolt 12 or a similar fastening device is slide~ble in a slot 13 in the tool 11, and in its unsecured c~n~ition is displacsabl~ in relation to the tool. When the ~olt 12 is position~d as shown in figure 2 the tool 11 produces th~ small~st possible radial displacemen~ of th0 t~eth 15 during operati~n. On the other h~nd when the bolt 12 is pos~ioned at the point i~nt~ d by reference numeral 14 the r~dial amplitude of the oscillatin~ t~th 15 during operation is maximised. Reference numeral 16 identrfi~s ths centrai axis of an eocentric drivs shaR corresp~nding to the shaft 2 in figure 1, h~ving corr~sponding counterwei~hts. A fix~cl ref~rance point for the purposes of adjustin~ the tool 11 may be located o~Jtside th~ spaG~ occupi~d by the tool itself, particularly if the to~l is semi-circular or oth~rwiss shaped f~r the purposes ~ saving space.
The bolt 12 may ~llow r~dial and tangential displacement in relation to ths shaft 16. The assembly of figure 2 m~y b~ ad~pted for u~e in compact;ng operations by providing means for propellin~ a tool ~orresponding to the tool 11 in a gorward direction at optionally variable speeds.
Refer~nce numeral 16 serves to idant`fy an eccentric drive shaR corresponding to that shown in fi~ure 1, while excludin~ the driv~ motor 1. The balt 1~ as shown in figura 2, and at the position indioated by reference numeral 14, shows the allowable range of adjustment f~r th~ cutting t~eth 15, bearing in mind thatths bolt 12 may be secured b~tween ei~er of thes~ extremes while located in the slot 13. By option~liy adjusting ths tool 11 in a t~n~ential direction the ds~r~e ~f ~scillation by th~ tools 15 may b~ further modi~ied. Thls may ser.~ to~chi~v~ a desir0d oscillation wh~n a machine equipped with the tools 15 _ 4_ 2~3~
opsratcs from a stationary location. By setting th~ bolt 12 in the pos~ion shownin flgure 2 ~hs cu~ting t~sth 15 d~scrib~ small circular paths 12a whe~eas the t~eth descri~ lar~sr cuttins paths 14a when the bolt 12 i~ located in ths ~orresponding position 14. Thc amplitud~ of oscill~t;ons d~scrib~d by th~ axis 7 ~emains unaffected.
Claims (8)
1. An assembly for drilling, milling, ripping and/or compacting materials which includes a tool on a rotatable carrier connected to an eccentric drive, the mass of the tool being compensated with reference to a predetermined counterweight on the eccentric drive.
2. An assembly according to claim 1 in which the combined mass of the tool together with an associated carrier is compensated with reference to the predetermined counterweight.
3. An assembly according to claim 1 or claim 2 in which the tool for drilling, milling, ripping and/or compacting is interchangeable with a similar tool having its mass compensated with reference to the predetermined counterweight before installation.
4. An assembly for drilling, milling, ripping and/or compacting materials which includes a rotatable tool on an eccentric drive in which the degree of oscillation by the tool is adjustable in relation to a fixed reference point.
5. An assembly according to claim 4 in which the tool is both radially and tangentially adjustable in relation to the reference point.
6. An assembly according to claim 4 or claim 5 in which the mass of the tool is compensated with reference to a predetermined counterweight on the eccentric drive.
7. A method of balancing an assembly for drilling, milling, ripping and/or compacting materials by means of a tool mounted on an eccentric drive, which includes the step of compensating the mass of the tool with reference to a predetermined counterweight on the eccentric drive.
8. A method according to claim 7 in which the tool is dynamically balanced.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH03214/92-0 | 1992-10-14 | ||
| CH03214/92A CH688815A5 (en) | 1992-10-14 | 1992-10-14 | Unit for drilling, milling, slitting and compression of materials. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2108318A1 true CA2108318A1 (en) | 1994-04-15 |
Family
ID=4251116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002108318A Abandoned CA2108318A1 (en) | 1992-10-14 | 1993-10-13 | Eccentrically supported tools for excavating minerals, counterbalanced with reference to counterweights |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0592981B1 (en) |
| AT (1) | ATE200239T1 (en) |
| CA (1) | CA2108318A1 (en) |
| CH (1) | CH688815A5 (en) |
| DE (1) | DE59310158D1 (en) |
| ZA (1) | ZA937532B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH689546A5 (en) * | 1994-07-13 | 1999-06-15 | Bechem Hannelore | About eccentric percussive tools for machining materials. |
| DE29618944U1 (en) * | 1996-10-31 | 1997-01-09 | Boart Longyear GmbH & Co. KG Hartmetallwerkzeugfabrik, 36151 Burghaun | Tool system for a device for the impact-superimposed processing of materials |
| EP1291490A3 (en) * | 2001-09-06 | 2003-05-21 | Bechem, Hannelore | Excavating tool for rock, minerals etc |
| CN104999330B (en) * | 2015-07-08 | 2017-05-24 | 沈阳建筑大学 | Main shaft-inlaid mechanical online dynamic balance device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3280865A (en) * | 1964-02-12 | 1966-10-25 | Dominion Tar & Chemical Co | Knife mounting |
| DK327678A (en) * | 1977-07-29 | 1979-01-30 | G Wanke | APPARATUS FOR BALANCING THE KNIFE SET TO A CUTTER |
| DE3632805A1 (en) * | 1986-09-26 | 1988-04-21 | Steffens Walter Gmbh Co | BALANCING ARRANGEMENT FOR CUTTER KNIFE HEADS |
| CH684786A5 (en) * | 1990-04-09 | 1994-12-30 | Bechem Hannelore | Exzenteraktivierte radially vibrating rotating tool holder. |
-
1992
- 1992-10-14 CH CH03214/92A patent/CH688815A5/en not_active IP Right Cessation
-
1993
- 1993-10-11 ZA ZA937532A patent/ZA937532B/en unknown
- 1993-10-11 AT AT93116413T patent/ATE200239T1/en not_active IP Right Cessation
- 1993-10-11 EP EP93116413A patent/EP0592981B1/en not_active Expired - Lifetime
- 1993-10-11 DE DE59310158T patent/DE59310158D1/en not_active Expired - Fee Related
- 1993-10-13 CA CA002108318A patent/CA2108318A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| ATE200239T1 (en) | 2001-04-15 |
| ZA937532B (en) | 1995-07-11 |
| CH688815A5 (en) | 1998-04-15 |
| EP0592981B1 (en) | 2001-04-04 |
| DE59310158D1 (en) | 2001-05-10 |
| EP0592981A1 (en) | 1994-04-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |