US3635267A - Cutting head for profile chipping of logs - Google Patents

Cutting head for profile chipping of logs Download PDF

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Publication number
US3635267A
US3635267A US835105A US3635267DA US3635267A US 3635267 A US3635267 A US 3635267A US 835105 A US835105 A US 835105A US 3635267D A US3635267D A US 3635267DA US 3635267 A US3635267 A US 3635267A
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US
United States
Prior art keywords
log
support member
rotation
cutting
path
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 - Lifetime
Application number
US835105A
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English (en)
Inventor
Alfred Reuter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
Original Assignee
Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik filed Critical Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
Application granted granted Critical
Publication of US3635267A publication Critical patent/US3635267A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B27L11/007—Combined with manufacturing a workpiece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
    • B27B33/20—Edge trimming saw blades or tools combined with means to disintegrate waste

Definitions

  • the invention concerns a cutting head for the profile chipping of logs wherein the rotational axis of the cutting head extends transverse to the chipped surface. More specifically the present invention relates to such a cutting head having a novel log support surface mounted on its face for rotation relative to the cutting head for reducing friction between the cutting head and the log.
  • a square beam is often produced from round timber, during which the removed lateral segments of the logs are converted directly into highgrade useful particles of chips.
  • two lateral segments of the log are chipped by two opposing cutting heads, between which the log is guided, in such a manner that a so-called model" piece develops with two surfaces opposing each other in parallel.
  • two additional surfaces are produced which for example, extend perpendicularly to the first surfaces, whereby the removed lateral segments of the piece" are likewise converted into high-grade useful particles or chips.
  • Cutting heads for profile chipping of round timber have been known to be mounted with their rotational axes running perpendicularly to the chipped surface while including a logsupporting surface which engages the chipped surface.
  • the supporting surface is supposed to support the timber immediately after the chipping process and to guide it between the cutting heads opposing each other. In prior art cutting heads, this supporting surface is formed by a circular front surface of the body of the cutting head itself.
  • the prior art supporting surface has the disadvantage that it turns together with the cutting head and therefore results in a relative speed between the supporting surface and chipped surface of the timber which speed is still considerably higher and in addition to the speed of the longitudinal movement of the timber along the cutting head. Since the cutting speeds in the case'of woodworking machines are very high, as is well known, this relative speed between the supporting surface and the chipped surface is so high, that the resulting friction will cause burning of the timber at points engaged by the supporting surface. Consequently the surface of the sawed timber produced is impaired, whichleads to a lowering of the quality of the lumber produced.
  • a further object of the present invention is to provide a novel method of supporting a longitudinally traveling log during chipping by a rotary cutting head which cuts into the side of the log.
  • a supporting surface formed as a disk' mounted freely rotatably in the cutting head. Because of the freely rotatable mounting of the disk, it does not revolve together with the cutting head, but is free to revolve at a lesser speed or to remain still, so that very slight friction will result between the supporting surface and the wood.
  • the supporting surface is at a standstill whenever the chipped timber is guided past it axially. In that case the relative movement between the supporting surface and the chipped surface is limited to a minimum value, namely to the speed of feed of the timber. Regularly this speed is so low that the surface of the wood is practically not impaired.
  • the supporting surface for practical purposes, is a closed circular surface.
  • the greatest possible contact surface is realized between the disk and the wood and, besides that, the central area of the cutting head is completely covered so that impairments are practically impossible as a result of chips and similar things piling up.
  • the supporting surface can also be an annular surface, for example if a decreased contact surface between the support and the wood will provide sufficient support.
  • the outside peripheral edge of the supporting surface is preferably rounded to remove sharp edges so that the chipped surface of the wood will easily run along the supporting surface and impairment of the chipped surface will be prevented.
  • the latter may also be formed in the shape of a flat cone on its outside periphery. Among other advantages, this will be advantageous in that the wood, even in the case of a slightly inclined position relative to the disk, will not come into contact with the edge of the disk but will glide along it without any significant resistance; and any wood splinters which possibly might protrude will not get caught behind the disk.
  • the supporting surface spherical (curved convexly) or as a flat cone.
  • the surface pressure of the supporting surface will increase gradually from the edge toward the middle of the support so that the wood will glide along it without any significant resistance while avoiding contact with the edge of the disk.
  • the chipping knives can consist in each instance of a scoring knife, which essentially bucks transversely in relation to the direction of the wood fibers, and a separating knife or planing knife, which cuts in parallel to the direction of the fiber and which separates the chip in the width in which the scoring knife has bucked.
  • a scoring knife which essentially bucks transversely in relation to the direction of the wood fibers
  • a separating knife or planing knife which cuts in parallel to the direction of the fiber and which separates the chip in the width in which the scoring knife has bucked.
  • chips of high quality can be produced because, as a result of the precise guidance of the wood, one can achieve a certain depth of cut and thickness of the chip which remain exactly the same.
  • the separation into scoring and separating knives will decrease the axial components of the cutting force on the wood, so that the load on the freely revolving support disks is lowered and thus an easier guidance of the wood will be achieved.
  • FIG. 1 is a plan view illustrating a round timber longitudinally moving between two cutting heads embodying the invention, with certain portions of the cutting heads removed to show associated supporting discs.
  • FIG. 2 is an enlarged cross-sectional view of one of the cutting heads taken along a diametrical plane.
  • FIG. 1 shows a round timber 1 moving longitudinally between two cutting heads 2 embodying the invention of a profile-chipping machine (not shown) during which two lateral segments of the timber are chipped in such a manner that two chipped .surfaces 3 will develop on the round timber l, which surfaces 3 run in parallel to one another.
  • Cutting heads 2 carry chipping knives 4 whose foremost edges 5 produce the surfaces 3.
  • the rotational axes of the cutting heads 2 in this case run perpendicularly to the chipped surfaces 3.
  • the chipping knives according to the invention can consist each time of a scoring knife, which bucks essentially transversely to the direction of the wood fibers, and a separating knife or planing knife, which cuts in parallel to the direction 'of the fibers and which separates the chip in the widthinwhich the scoring knife had bucked-a similar arrangement is shown for example in US. Pat. No. 3,360,024 issued to the assignee of the present application.
  • a disk 6 is mounted freely rotatably relative to the head 2.
  • the cutting head 2 has a middle peg 7 which carries the disk 6 via a bearing, in the embodiment shown by way of example, a double file, grooved ball bearing 8 leading in an axial and radial direction.
  • frontal surface 9 of the disk 6 in an axial direction is essentially at the same level with the leading edges 5 of the chipping knife 4.
  • the front surface 9 of the disk 6 constitutes a supporting surface for the round timber which it engages at the chipped surface 3.
  • the supporting surface is shown as a flat cone 10 at the outside periphery of the disk 6, which cone makes possible an easier gliding of disk 6 along the chipped surfaces 3.
  • a rotary cutting head for profile cutting of logs or similar members comprising in combination, a body having a number of knives thereon for rotation with the body to cut pieces from a log, a support member for engaging a surface of the log for supporting said log during cutting by the knives, and means rotatably mounting said support member within said body for rotation about an axis coincident with the rotational axis of said body such that said body rotates relative to said support member during cutting so as to reduce friction between the support member and the surface of the log being cut, said means preventing axial movement of said support member into said body to maintain proper supporting engagement with the log being cut, said means including a ball bearing positioned between the body and said support member, said ball bearing including an inner race fixed directly to said body and an outer race fixed to said support member, said support member being relieved at peripheral portions thereof to facilitate movement of a log across the support member while preventing obstructing engagement between the log and peripheral portions of said support member.
  • Apparatus for cutting pieces from a log moving longitudinally in a horizontal path comprising in combination, at least two opposed cutterheads mounted on opposite sides of the path of movement of the log for rotation about generally horizontal axesrto engage and cut into opposite sides of the log as it moves along said path, said cutter heads each including a body having a number of knives thereon for rotation with the body to cut pieces from a log as the log moves along said path, and a support member for engaging and supporting the log during cutting by the knives as the log moves along said path, said support member being mounted within said body for rotation relative to said body about an axis coincident with the axis of rotation of said body.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)
  • Crushing And Pulverization Processes (AREA)
US835105A 1969-03-15 1969-06-20 Cutting head for profile chipping of logs Expired - Lifetime US3635267A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691913295 DE1913295A1 (de) 1969-03-15 1969-03-15 Messerkopf zum Profilzerspanen von Rundholz

Publications (1)

Publication Number Publication Date
US3635267A true US3635267A (en) 1972-01-18

Family

ID=5728283

Family Applications (1)

Application Number Title Priority Date Filing Date
US835105A Expired - Lifetime US3635267A (en) 1969-03-15 1969-06-20 Cutting head for profile chipping of logs

Country Status (11)

Country Link
US (1) US3635267A (xx)
AT (1) AT298034B (xx)
CH (1) CH507073A (xx)
CS (1) CS166721B2 (xx)
DE (1) DE1913295A1 (xx)
FI (1) FI53669C (xx)
FR (1) FR2034963A1 (xx)
GB (1) GB1273206A (xx)
NL (1) NL6909019A (xx)
SE (1) SE356705B (xx)
YU (1) YU123869A (xx)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812891A (en) * 1971-11-27 1974-05-28 Linck Geb Tool heads for use in machining timber
US4690186A (en) * 1986-03-05 1987-09-01 Optimil Machinery, Inc. Log feed apparatus
US6026872A (en) * 1997-11-04 2000-02-22 Holzindustrie Preding Gesellschaft M.B.H. System for producing cants and wood chips
US20100175787A1 (en) * 2006-03-29 2010-07-15 Michael Weinig Ag Machine for Machining Workpieces Made from Wood, Plastic and Similar and Tool for Application in Such a Machine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2571296B1 (fr) * 1984-10-08 1987-03-20 Philippe Marcel Dispositif pour faire des rainures et etancher les vitrages et alleges
FR2577963B1 (fr) * 1984-10-08 1987-10-16 Philippe Marcel Dispositif pour demastiquer les vitres
DE3778709D1 (de) * 1986-12-24 1992-06-04 Linck Masch Gatterlinck Kreissaegekopf.
AT2146U1 (de) * 1997-07-18 1998-05-25 Holzindustrie Preding Ges M B Blockformungsmaschine
DE19838042A1 (de) * 1998-08-21 1999-12-16 Esterer Wd Gmbh & Co Rotierendes Zerspanerwerkzeug
CN108858469B (zh) * 2018-06-29 2020-12-11 嘉兴市龙锋市政建设有限公司 一种建筑工程使用的锯木头机构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US23870A (en) * 1859-05-03 Island
US2555382A (en) * 1945-10-01 1951-06-05 Cascades Plywood Corp Panel scarfing machine
US2722956A (en) * 1954-07-06 1955-11-08 Ludwig Paul Walter Vertical planer
US3360024A (en) * 1964-08-05 1967-12-26 Linck Geb Apparatus for dividing logs into chips
US3361167A (en) * 1960-05-27 1968-01-02 George M Standal Chipper apparatus and guide therefor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US23870A (en) * 1859-05-03 Island
US2555382A (en) * 1945-10-01 1951-06-05 Cascades Plywood Corp Panel scarfing machine
US2722956A (en) * 1954-07-06 1955-11-08 Ludwig Paul Walter Vertical planer
US3361167A (en) * 1960-05-27 1968-01-02 George M Standal Chipper apparatus and guide therefor
US3360024A (en) * 1964-08-05 1967-12-26 Linck Geb Apparatus for dividing logs into chips

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812891A (en) * 1971-11-27 1974-05-28 Linck Geb Tool heads for use in machining timber
US4690186A (en) * 1986-03-05 1987-09-01 Optimil Machinery, Inc. Log feed apparatus
US6026872A (en) * 1997-11-04 2000-02-22 Holzindustrie Preding Gesellschaft M.B.H. System for producing cants and wood chips
US20100175787A1 (en) * 2006-03-29 2010-07-15 Michael Weinig Ag Machine for Machining Workpieces Made from Wood, Plastic and Similar and Tool for Application in Such a Machine

Also Published As

Publication number Publication date
CS166721B2 (xx) 1976-03-29
YU123869A (en) 1973-06-30
FI53669C (fi) 1978-07-10
NL6909019A (xx) 1970-09-17
FI53669B (xx) 1978-03-31
CH507073A (de) 1971-05-15
DE1913295A1 (de) 1970-10-22
SE356705B (xx) 1973-06-04
FR2034963A1 (xx) 1970-12-18
AT298034B (de) 1972-04-25
GB1273206A (en) 1972-05-03

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