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NZ739136B2 - Knife assembly - Google Patents
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NZ739136B2 - Knife assembly - Google Patents

Knife assembly

Info

Publication number
NZ739136B2
NZ739136B2 NZ739136A NZ73913618A NZ739136B2 NZ 739136 B2 NZ739136 B2 NZ 739136B2 NZ 739136 A NZ739136 A NZ 739136A NZ 73913618 A NZ73913618 A NZ 73913618A NZ 739136 B2 NZ739136 B2 NZ 739136B2
Authority
NZ
New Zealand
Prior art keywords
knife blade
cuboid
knife
holder block
blade
Prior art date
Application number
NZ739136A
Other versions
NZ739136A (en
Inventor
Masaru Koike
Original Assignee
Meinan Machinery Works Inc
Filing date
Publication date
Priority claimed from JP2017130951A external-priority patent/JP6912694B2/en
Application filed by Meinan Machinery Works Inc filed Critical Meinan Machinery Works Inc
Publication of NZ739136A publication Critical patent/NZ739136A/en
Publication of NZ739136B2 publication Critical patent/NZ739136B2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/02—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a stationary cutting member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/28—Splitting layers from work; Mutually separating layers by cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting the cutting member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2628—Means for adjusting the position of the cutting member
    • 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
    • B27L5/00—Manufacture of veneer ; Preparatory processing therefor
    • B27L5/02—Cutting strips from a rotating trunk or piece; Veneer lathes
    • 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
    • B27L5/00—Manufacture of veneer ; Preparatory processing therefor
    • B27L5/02—Cutting strips from a rotating trunk or piece; Veneer lathes
    • B27L5/025—Nose-bars; Back-up rolls

Abstract

knife assembly for use in a veneer cutting machine such as a rotary veneer lathe and a veneer slicer includes a knife blade (37), a plurality of knife blade holders (31) and a knife adjusting bolt (35) with a lock nut. Each knife blade holder includes a holder block having formed therethrough a threaded hole through which the knife adjusting bolt (35) is adjustably inserted. The holder block has a first support surface that is in supporting contact with a part of one surface of the knife blade on the side thereof where a bevel face of the knife blade is formed and a second support surface that is in supporting contact with a part of a base end surface (37E) located opposite from and extending parallel to a cutting edge of the knife blade. The knife blade base end surface has a plurality of cuboid recesses (37F), sized to fit a complementary cuboid solid portion of the knife blade holder (31).

Claims (10)

WHAT IS CLAIMED IS:
1. A knife assembly comprising, a single cutting edge consisting of a knife blade having a thickness, first 5 and second blade surfaces across the thickness, a bevel surface formed on the first blade surface side of the knife blade, the cutting edge formed by the second blade surface and the bevel surface, a base end surface located opposite from and extending parallel to the cutting edge, a plurality of knife blade holders including respective holder blocks each 10 having a first support surface that is in contact with a part of the first blade surface of the single knife blade and a second support surface that is in contact with a part of the base end surface of the knife blade, each holder block having therethrough a threaded hole formed extending perpendicularly to the second support surface of the holder block, the holder block being removably fixed to the 15 knife blade, said plurality of knife holders being disposed with predetermined intervals therebetween relative to and in a longitudinal direction of the single cutting edge of the single knife blade, a knife adjusting bolt adjustably inserted through the threaded hole, and a lock nut that releasably fixes the knife adjusting bolt to the holder block, 20 and wherein the knife blade has therein a plurality of cuboid recesses aligning parallel to the cutting edge at predetermined intervals therebetween, each cuboid recess being recessed from the base end surface toward the cutting edge and having a surface extending parallel to the cutting edge and forming part of the 25 base end surface of the knife blade, whereas said holder block of each knife blade holder has a cuboid shape formed with a complementary portion including a cuboid void portion to receive part of said knife blade and a cuboid solid portion adjoining said cuboid void portion, said cuboid solid portion being sized to fit in each cuboid recess in said knife blade, said cuboid solid portion providing the 30 second support surface to support the knife blade at said surface in the cuboid recess thereof.
2. A knife assembly according to claim 1, wherein the knife blade has therein at a position adjacent to the base end surface thereof a plurality of threaded holes each formed extending in the thickness direction of the knife blade and each holder block of the knife blade holder has therethrough a hole 5 formed coaxially with the threaded hole in the knife blade, each knife blade holder further including a fixing bolt that is inserted through the hole in each holder block and screwed in the threaded hole in the knife blade to fix each holder block of the knife blade holder to the knife blade. 10
3. A knife assembly according to claim 1 or 2, wherein each holder block of each knife blade holder is of an L-shape having a vertical portion and a horizontal portion in cross section taken perpendicularly to the first and the second support surfaces of each holder block and has the first support surface and the second support surface in the vertical portion and the horizontal portion 15 of the L-shape of each holder block, respectively.
4. A knife assembly according to any of the preceding claims, wherein said knife blade has therein the plurality of cuboid recesses aligning parallel to the cutting edge at predetermined intervals therebetween, each cuboid recess 20 being recessed from the base end surface toward the cutting edge and having a surface extending parallel to the cutting edge and forming part of the base end surface of the knife blade, whereas said holder block of each knife blade holder has a cuboid shape formed with a complementary portion including the cuboid void portion to receive part of said knife blade and the cuboid solid portion 25 adjoining said cuboid void portion, said cuboid solid portion being sized to fit in one of said cuboid recesses in said knife blade, said cuboid void portion in the holder block providing the second support surface to support the knife blade at said base end surface of the knife blade. 30 5. A knife assembly according to any one of the preceding claims, wherein the knife blade has therein the plurality of cuboid recesses that is recessed from the base end surface toward the cutting edge and has a surface extending parallel to the cutting edge and forming the part of the base end surface of the knife blade, each holder block has a shape of a cuboid shape has a part thereof, which includes one vertex of the cuboid shape, removed therefrom thereby to form the cuboid void portion in each holder block, the cuboid void
5.portion in each holder block having three adjoining recessed surfaces including a surface extending parallel to the first blade surface and forming the first support surface that is in contact with the part of the first blade surface and a surface extending parallel to the base end surface and having a dimension as measured in the knife blade thickness direction corresponding to the thickness of the knife 10 blade, each holder block having the cuboid solid portion adjoining to the cuboid-shaped recess in the direction along the cutting edge of the knife blade, the solid portion having a shape that is complementary to that of the plurality of cuboid recesses formed in the knife blade and a surface extending parallel to and spaced in an axial direction of the knife adjusting bolt from the surface of the 15 cuboid-shaped recess extending parallel to the base end surface at a position of the holder block that is downstream of the adjusting bolt with respect to a direction in which the fixing bolt is advanced when screwed in a fixing direction in the threaded holes of the knife blade, the surface of the solid complementary portion having same dimension as measured in the knife blade thickness 20 direction as the surface of the cuboid-shaped recess extending parallel to the base end surface and forming the second support surface that is in contact with the surface in the plurality of cuboid recesses formed in the knife blade, and each holder block being fixed to the knife blade with the complementary part of each holder block inserted in the plurality of cuboid recesses of the knife blade.
6. A knife assembly according to any one of the preceding claims, wherein the knife blade has therein the plurality of cuboid recesses that is recessed from the base end surface toward the cutting edge and has a surface extending parallel to the cutting edge and forming the part of the base end 30 surface of the knife blade, each holder block has a shape as a cuboid shape as a part thereof, which includes one vertex of the cuboid shape, removed therefrom thereby to form the cuboid void portion in each holder block, the cuboid void portion in each holder block having three adjoining recessed surfaces including a surface extending parallel to the first blade surface and forming the first support surface that is in contact with the part of the first blade surface and a surface extending parallel to the base end surface, having a dimension as measured in 5 the knife blade thickness direction corresponding to the thickness of the knife blade, each holder block having a cuboid solid portion in each holder block adjoining to the cuboid-shaped recess in the direction along the cutting edge of the knife blade, the solid portion having a shape that is complementary to that of the plurality of cuboid recesses formed in the knife blade and a surface extending 10 parallel to and spaced in axial direction of each knife adjusting bolt from the surface of the cuboid-shaped recess extending parallel to the base end surface at a position of each holder block that is downstream of the adjusting bolt with respect to a direction in which the fixing bolt is advanced when screwed in a fixing direction in the threaded holes of the knife blade, the surface of the solid 15 complementary portion having the same dimension as measured in the knife blade thickness direction as the surface of the cuboid-shaped recess extending parallel to the base end surface and forming the second support surface that is in contact with the surface in plurality of cuboid recesses formed in the knife blade, and each holder block being fixed to the knife blade with the complementary 20 portion of each holder block inserted in the plurality of cuboid recesses of the knife blade.
7. A knife assembly according to any one of claims 3 to 6, wherein the first support surface of the holder block is formed flat.
8. A knife assembly according to any one of claims 3 to 6, wherein the second support surface of the holder block is formed flat.
9. A knife assembly according to any one of claims 3 to 6, wherein the 30 base end surface of the knife blade is formed flat.
10. A knife assembly according to claim 1 substantially as herein described reference to any embodiment disclosed.
NZ739136A 2018-01-19 Knife assembly NZ739136B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2017013529 2017-01-27
JP2017121806 2017-06-22
JP2017130951A JP6912694B2 (en) 2017-01-27 2017-07-04 Combination knife

Publications (2)

Publication Number Publication Date
NZ739136A NZ739136A (en) 2024-01-26
NZ739136B2 true NZ739136B2 (en) 2024-04-30

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