CA1045953A - Planing and disintegrating apparatus - Google Patents
Planing and disintegrating apparatusInfo
- Publication number
- CA1045953A CA1045953A CA274,739A CA274739A CA1045953A CA 1045953 A CA1045953 A CA 1045953A CA 274739 A CA274739 A CA 274739A CA 1045953 A CA1045953 A CA 1045953A
- Authority
- CA
- Canada
- Prior art keywords
- knife
- support
- ledge
- thickness
- planing
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
- B27L11/005—Tools therefor
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A planing apparatus comprises a knife replaceably mounted in a carrier and having two parallel major faces and two parallel minor faces inclined with respect to the major faces whereby the cross section of the knife forms a parallelo-gram, each of the minor faces forming a knife edge at their intersection with the major faces. A knife support supports the knife in the carrier and includes a first transverse ledge holding the knife in place and a second transverse ledge spaced from the knife. The second ledge has a thickness in slight excess of the thickness of the knife.
A planing apparatus comprises a knife replaceably mounted in a carrier and having two parallel major faces and two parallel minor faces inclined with respect to the major faces whereby the cross section of the knife forms a parallelo-gram, each of the minor faces forming a knife edge at their intersection with the major faces. A knife support supports the knife in the carrier and includes a first transverse ledge holding the knife in place and a second transverse ledge spaced from the knife. The second ledge has a thickness in slight excess of the thickness of the knife.
Description
~'3~S953 1 l~h~ pros~nt .invention rel~te~ to an apparatus for planing and dis:i.ntetJrating wood, synthetic resin and other mat~.rialc-, wher~ln a planing knif~ w:ith a smooth or ~erra-ted kni.Ee edye is reE)laceably mounted in a c~rri.~r.
Wood, synthetic resin and other rnaterials are planed and disintegrated with planing knives whose knife edges must be sharpened after they have become dull. Also known are disposable planiny knive~ which are thrown away after their edges are worn, the replacemen~ of such knives beiny possibly less expensive than the sharpening of knife edges. Furtl-ermore, a large portion of the knives whose edges are resharpened is used up in clamping the knife in the carrier and is not usable as a ~nife. Depending on the type of apparatus up to about two thirds of the entire . ~:~
width of the knife may be used for clamplng. Since the knives are made of expensive steel and are used in planing apparatus in large numbers, this practice iB exceedingly expens.ive~ ~
It is a primary object of this invention to provide a .~.
universally useful apparatus wherein readil~ manufactured knives ~;
for paring, planing and disintegrating may be replaceably used, `:
20 whether with smooth or serrated knife edges, without the need :`
for re-sharpening the edges, and which may be supported by worn-out knives used as kni~e supports. `
The above and other objec~s are aacomplished in accoxdance With th~ invention With an apparatu~ compri~ing a carrier, a knife replaceably mounted on the carrier and a knife support supporting the knife in the carrier. The knife has two parallel major ace~ de~ining the thickness o the knife and two parallel minor face~ inclined with respect to the major faces .:
whereby the cross section of the knife taken perpendicularly to the major faces forms a parallelogram, each of the minar faces --1-- , 1(~4~Y153 1 formin~ a knife ~d~e ~t the:ir intersection with the major face~.
The knife suppor-t includes a first tran~verse ledye ~ffixed to the sUppor t and holding the knife in place with respect to the support, and a second transverse ledge afixed to the support and spaced from the kniEe, ~he second ledge ha~iny a t~hickness in slight excess of the thickness of the knife.
The objects, advantages and features of the present inven-~ion will become more apparent from the detailed descrip~ion of certain preferred embodiments thereof, taken in conjunction with the accompanying drawing wher0in:
Fig. 1 is an end view, partly in cross section, of a cutter arbor for a planing machine, a milling head and the like, Fig. 2 is an enlarged and view of the knife arrang~ment, Fig. 3 is an end view of one emb~diment of a planing knife according to this invention, Fig. 4 is a like view of a modified embodiment, Fig. 5 is a pla~ view of a conventional planing knife with oblique side edge~, Fig. 6 is a plan view ~howing the knife of Fig. 5 used as a suppor~ for the knife of Fig. 3, Fig. 7 shows the ~ame view as Fig. ~ but with the }cnife turned around to present its other cutking edge, and Fiy. 8 is a plan view of the kniEe o~ Fig. 7.
Re~arriny noW ~o the dxawing and ~irst to F.ig. 1, the illustrated carrier for knife 1 i9 a cutter arbor 3 which is `
rotatably mounted in the frame of a planing machin~ ~not shown).
r~he cutter arbor has diametrically opposed recesses 4 wherein the planing knife is clamped in a conventional manner, the clamping means including knife support 6 and clamping plate 5 wherebetween 3~ knife 1 is replaceably mounted, the clamping plate being movable into clamping engagement with the knife by set screws 11. Since ~L5553 1 the ~nife cl~lmpin~ is entirely conventional and forms no part of t~e inventioll, it hac: been illustrated only diagrammatically.
~ s is moro clearl~ shown in Fiys. 3 and 4, knife 1 has two parallQl major Eaces deEining the ~hicknoss of the knife and two parallel minor faces inclined wi-th respect to the major faces whereby the cross section oE the knife taken perpendicularly to the major face forms a paralleloyrarn. Eac~l minor ~ace forms a knife edge 2, 2' (Fig. 3) at its intersection with a respective one of the major faces.
In the modification of Fig. 4, the minor faces of the -~
knife are formed with small faces 14 enclosing an angle with the major portion of the minor aces in the region of cutting edges
Wood, synthetic resin and other rnaterials are planed and disintegrated with planing knives whose knife edges must be sharpened after they have become dull. Also known are disposable planiny knive~ which are thrown away after their edges are worn, the replacemen~ of such knives beiny possibly less expensive than the sharpening of knife edges. Furtl-ermore, a large portion of the knives whose edges are resharpened is used up in clamping the knife in the carrier and is not usable as a ~nife. Depending on the type of apparatus up to about two thirds of the entire . ~:~
width of the knife may be used for clamplng. Since the knives are made of expensive steel and are used in planing apparatus in large numbers, this practice iB exceedingly expens.ive~ ~
It is a primary object of this invention to provide a .~.
universally useful apparatus wherein readil~ manufactured knives ~;
for paring, planing and disintegrating may be replaceably used, `:
20 whether with smooth or serrated knife edges, without the need :`
for re-sharpening the edges, and which may be supported by worn-out knives used as kni~e supports. `
The above and other objec~s are aacomplished in accoxdance With th~ invention With an apparatu~ compri~ing a carrier, a knife replaceably mounted on the carrier and a knife support supporting the knife in the carrier. The knife has two parallel major ace~ de~ining the thickness o the knife and two parallel minor face~ inclined with respect to the major faces .:
whereby the cross section of the knife taken perpendicularly to the major faces forms a parallelogram, each of the minar faces --1-- , 1(~4~Y153 1 formin~ a knife ~d~e ~t the:ir intersection with the major face~.
The knife suppor-t includes a first tran~verse ledye ~ffixed to the sUppor t and holding the knife in place with respect to the support, and a second transverse ledge afixed to the support and spaced from the kniEe, ~he second ledge ha~iny a t~hickness in slight excess of the thickness of the knife.
The objects, advantages and features of the present inven-~ion will become more apparent from the detailed descrip~ion of certain preferred embodiments thereof, taken in conjunction with the accompanying drawing wher0in:
Fig. 1 is an end view, partly in cross section, of a cutter arbor for a planing machine, a milling head and the like, Fig. 2 is an enlarged and view of the knife arrang~ment, Fig. 3 is an end view of one emb~diment of a planing knife according to this invention, Fig. 4 is a like view of a modified embodiment, Fig. 5 is a pla~ view of a conventional planing knife with oblique side edge~, Fig. 6 is a plan view ~howing the knife of Fig. 5 used as a suppor~ for the knife of Fig. 3, Fig. 7 shows the ~ame view as Fig. ~ but with the }cnife turned around to present its other cutking edge, and Fiy. 8 is a plan view of the kniEe o~ Fig. 7.
Re~arriny noW ~o the dxawing and ~irst to F.ig. 1, the illustrated carrier for knife 1 i9 a cutter arbor 3 which is `
rotatably mounted in the frame of a planing machin~ ~not shown).
r~he cutter arbor has diametrically opposed recesses 4 wherein the planing knife is clamped in a conventional manner, the clamping means including knife support 6 and clamping plate 5 wherebetween 3~ knife 1 is replaceably mounted, the clamping plate being movable into clamping engagement with the knife by set screws 11. Since ~L5553 1 the ~nife cl~lmpin~ is entirely conventional and forms no part of t~e inventioll, it hac: been illustrated only diagrammatically.
~ s is moro clearl~ shown in Fiys. 3 and 4, knife 1 has two parallQl major Eaces deEining the ~hicknoss of the knife and two parallel minor faces inclined wi-th respect to the major faces whereby the cross section oE the knife taken perpendicularly to the major face forms a paralleloyrarn. Eac~l minor ~ace forms a knife edge 2, 2' (Fig. 3) at its intersection with a respective one of the major faces.
In the modification of Fig. 4, the minor faces of the -~
knife are formed with small faces 14 enclosing an angle with the major portion of the minor aces in the region of cutting edges
2, 2'.
Knives 1 o~ this invention are preferably made o~ clteel strip. After cutting edge 2 ha~ been worn out, the knife is turned around to u~e edge 2' as the knife edge. AEter both kcnife edges are dulled, the knife is replaced. In other words, the knives are disposable.
Knife support 6 i9 a plate and, advantageously, a con-ventional worn planing knife may be used as support 6. Accordingto the invention, two transverse ledges 7 and 8 are aEixed to support 6, for instance by welding. Flrst ledge 7 serves to hold knife 1 in place with respect to support 6, i.e. to determine how far th~ lcnife eclge proj~ct~ Erom th~ autt~r arbor.
In the embodiment o~ Fig. 2, ledge 7 has a thickness slightly les9 than that of knife 1 and a face extending obliquely from knife suppoxt 6 to de~ine clamping gap 9 therebetween. One of the knie edges extends into gap 9 and the minor face of the knife forming this knife edge is in contact with first ledge 7 along the center line of the minor face, support line 10 for the ;...
16~45~S3 1 minor f~ca being ~hu~ spaced from the knife edye which extends into gap 9~ Second transverse ledge 8 is spaced from the knife and ha~ a thicknei~ in slight excess o the thickness of the knife. This arranyemQnt improves the clamping effect on knife 1 when clamping plate 5 is pressed in-to engagement with the knife.
When one knie edge is worn out, the c-amplng plate is released, the knife is turned around to present the other knife edge thereof at the periphery of the cutter arbor, and 1-the clamping plate is re-tightened, no further radial adjustment of the knife being required since it is held in proper place by ledge 7.
If conventional worn planing knives are used as supports 6, such knives are usually plates which are not rectangular. As illustrated in Figs~ 5 to 7, such support plates have side edges extending obliquely to the end edges. A~ shown in F'ig. 6, when knife 1 is supported on such a plate in one operating position, with it~ knife edge 2 parallel to one end edge of support 6, the parallelogram form of the knife mates with the form of the support. However, when knife edge 2 is worn and the knife is ~ turned around to present knife edge 2', an end portion 12 of the knife projects from the support ~Fig. 7). To avoid this, one end of knife 1 adjacenk the knife edge to be used first i5 obli~uely notahed a~ 13 ~o enable end portion 12 to he hroken oE so a~ to avoid any pro~ecting knife porkion.
The apparakus hereinabove disclosed and herein illustrated can be used universally in all types of planing machine~ in carpenter shops, 9aw mills, milling heads, disintegrat-ion of synthetic resin and wood, and the like. It may be used in existing and conventional machinery, without any changes in the machines. The planing knives used in such machines may then be , . .: :~ . , , ,:
l used, after ~hey have been worn out, aq knife support~ where the:~ r f ine ma ter.ial quality is very useful . rrhe kniEe edge WhlCh i5 not in use is protected in the cla~ping gap so that it ~, .i].l not be damayed beEore use and no height adjustment i.s needed when th~ kn:iE~ iE3 clalnped to the carrier.
2~ .
, ~, _5_ ~
Knives 1 o~ this invention are preferably made o~ clteel strip. After cutting edge 2 ha~ been worn out, the knife is turned around to u~e edge 2' as the knife edge. AEter both kcnife edges are dulled, the knife is replaced. In other words, the knives are disposable.
Knife support 6 i9 a plate and, advantageously, a con-ventional worn planing knife may be used as support 6. Accordingto the invention, two transverse ledges 7 and 8 are aEixed to support 6, for instance by welding. Flrst ledge 7 serves to hold knife 1 in place with respect to support 6, i.e. to determine how far th~ lcnife eclge proj~ct~ Erom th~ autt~r arbor.
In the embodiment o~ Fig. 2, ledge 7 has a thickness slightly les9 than that of knife 1 and a face extending obliquely from knife suppoxt 6 to de~ine clamping gap 9 therebetween. One of the knie edges extends into gap 9 and the minor face of the knife forming this knife edge is in contact with first ledge 7 along the center line of the minor face, support line 10 for the ;...
16~45~S3 1 minor f~ca being ~hu~ spaced from the knife edye which extends into gap 9~ Second transverse ledge 8 is spaced from the knife and ha~ a thicknei~ in slight excess o the thickness of the knife. This arranyemQnt improves the clamping effect on knife 1 when clamping plate 5 is pressed in-to engagement with the knife.
When one knie edge is worn out, the c-amplng plate is released, the knife is turned around to present the other knife edge thereof at the periphery of the cutter arbor, and 1-the clamping plate is re-tightened, no further radial adjustment of the knife being required since it is held in proper place by ledge 7.
If conventional worn planing knives are used as supports 6, such knives are usually plates which are not rectangular. As illustrated in Figs~ 5 to 7, such support plates have side edges extending obliquely to the end edges. A~ shown in F'ig. 6, when knife 1 is supported on such a plate in one operating position, with it~ knife edge 2 parallel to one end edge of support 6, the parallelogram form of the knife mates with the form of the support. However, when knife edge 2 is worn and the knife is ~ turned around to present knife edge 2', an end portion 12 of the knife projects from the support ~Fig. 7). To avoid this, one end of knife 1 adjacenk the knife edge to be used first i5 obli~uely notahed a~ 13 ~o enable end portion 12 to he hroken oE so a~ to avoid any pro~ecting knife porkion.
The apparakus hereinabove disclosed and herein illustrated can be used universally in all types of planing machine~ in carpenter shops, 9aw mills, milling heads, disintegrat-ion of synthetic resin and wood, and the like. It may be used in existing and conventional machinery, without any changes in the machines. The planing knives used in such machines may then be , . .: :~ . , , ,:
l used, after ~hey have been worn out, aq knife support~ where the:~ r f ine ma ter.ial quality is very useful . rrhe kniEe edge WhlCh i5 not in use is protected in the cla~ping gap so that it ~, .i].l not be damayed beEore use and no height adjustment i.s needed when th~ kn:iE~ iE3 clalnped to the carrier.
2~ .
, ~, _5_ ~
Claims (6)
1. An apparatus for planing and disentegrating wood, synthetic resin and other materials, comprising (a) a carrier (b) a knife replaceably mounted in the carrier, the knife having:
(1) two parallel major faces defining the thickness of the knife and (2) two parallel minor faces inclined with respect to the major faces whereby the cross section of the knife taken perpendicularly to the major faces forms a parallelogram, each of the minor faces forming a knife edge at their intersection with the major faces, and (c) a knife support supporting the knife in the carrier, the knife support including:
(1) a first transverse ledge affixed to the support and holding the knife in place with respect to the support, and (2) a second transverse ledge affixed to the support and spaced from the knife, the second ledge having a thickness in slight excess of the thickness of the knife.
(1) two parallel major faces defining the thickness of the knife and (2) two parallel minor faces inclined with respect to the major faces whereby the cross section of the knife taken perpendicularly to the major faces forms a parallelogram, each of the minor faces forming a knife edge at their intersection with the major faces, and (c) a knife support supporting the knife in the carrier, the knife support including:
(1) a first transverse ledge affixed to the support and holding the knife in place with respect to the support, and (2) a second transverse ledge affixed to the support and spaced from the knife, the second ledge having a thickness in slight excess of the thickness of the knife.
2. The apparatus of claim 1, wherein the knife support is a plate.
3. The apparatus of claim 2, wherein the plate is a worn planing knife.
4. The apparatus of claim 1, wherein the first ledge has a thickness slightly less than that of the knife and a face extending obliquely from the knife support to define a gap therebetween, one of the knife edges extending into the gap and the minor face of the knife forming the one knife edge being in contact with the first ledge along the center line of said minor face.
5. The apparatus of claim 1, wherein the knife support is not rectangular, and one end of the knife adjacent the knife edge to be used first is obliquely notched to enable it to be broken off.
6. The apparatus of claim 1, wherein the knife is a disposable steel strip.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19762613549 DE2613549A1 (en) | 1976-03-30 | 1976-03-30 | Planing tool for wood and synthetic materials - has narrow blade supported between backing strip and packers to reduce portion held in tool |
| DE19772709360 DE2709360A1 (en) | 1977-03-03 | 1977-03-03 | Planing tool for wood and synthetic materials - has narrow blade supported between backing strip and packers to reduce portion held in tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1045953A true CA1045953A (en) | 1979-01-09 |
Family
ID=25770277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA274,739A Expired CA1045953A (en) | 1976-03-30 | 1977-03-25 | Planing and disintegrating apparatus |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS52121898A (en) |
| AT (1) | ATA216577A (en) |
| AU (1) | AU2352677A (en) |
| CA (1) | CA1045953A (en) |
| FR (1) | FR2346115A1 (en) |
| GB (1) | GB1538966A (en) |
| IT (1) | IT1076257B (en) |
| NO (1) | NO771103L (en) |
| SE (1) | SE7703493L (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO147137C (en) * | 1979-12-29 | 1983-02-09 | Pallmann W | RESPECTABLE KNIFE FOR TRIPPING CUTTER. |
-
1977
- 1977-03-22 FR FR7708466A patent/FR2346115A1/en not_active Withdrawn
- 1977-03-23 AU AU23526/77A patent/AU2352677A/en not_active Expired
- 1977-03-24 GB GB12375/77A patent/GB1538966A/en not_active Expired
- 1977-03-25 CA CA274,739A patent/CA1045953A/en not_active Expired
- 1977-03-28 SE SE7703493A patent/SE7703493L/en unknown
- 1977-03-28 AT AT216577A patent/ATA216577A/en not_active IP Right Cessation
- 1977-03-29 NO NO771103A patent/NO771103L/en unknown
- 1977-03-29 IT IT21826/77A patent/IT1076257B/en active
- 1977-03-30 JP JP3475877A patent/JPS52121898A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| SE7703493L (en) | 1977-10-01 |
| IT1076257B (en) | 1985-04-27 |
| GB1538966A (en) | 1979-01-24 |
| JPS52121898A (en) | 1977-10-13 |
| NO771103L (en) | 1977-10-03 |
| AU2352677A (en) | 1978-09-28 |
| ATA216577A (en) | 1980-07-15 |
| FR2346115A1 (en) | 1977-10-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5709255A (en) | Chipper with detachable facing knives | |
| US4771718A (en) | Chipper disc and knife assembly | |
| CA2166678C (en) | Slabbing chipper with replaceable knives and wear plate | |
| US4997018A (en) | Mounted knife system | |
| US5209278A (en) | Drum chipper with knife and knife holder | |
| US5271442A (en) | Knife with clamp package mounting knife | |
| US5271440A (en) | Chipper disc assembly having extended-life regrindable disposable knives | |
| US4009742A (en) | Wood-working mechanism | |
| US5819826A (en) | Chip cutting knife with spaced deflector ridges | |
| US5146963A (en) | Chipping device | |
| US5439039A (en) | Slabber with fixed counterknife and adjustable knife and clamp | |
| DE59907337D1 (en) | Machine for cutting a strand of material into slices | |
| CA1066038A (en) | Knife holder in log slabbing chipper | |
| CA2123043A1 (en) | Method and Device for Resharpening Knives Used in Cutting Machines | |
| CA2167465C (en) | Chipping cutter head including end cutting knives | |
| US2521868A (en) | Cutterhead with constant length retaining cutters | |
| US4082128A (en) | Planing and disintegrating apparatus | |
| CA1045953A (en) | Planing and disintegrating apparatus | |
| US4977939A (en) | Knife assembly for chipper | |
| US2337407A (en) | Knife mounting | |
| US5593253A (en) | Router bit with interchangeable knives | |
| US3414029A (en) | Knife for cutting lumber | |
| Franz | An analysis of chip formation in wood machining | |
| US2463852A (en) | Skiving tool | |
| US4311175A (en) | Log cutter |