US3199799A - Cutter for wood-shaving machine - Google Patents

Cutter for wood-shaving machine Download PDF

Info

Publication number
US3199799A
US3199799A US238909A US23890962A US3199799A US 3199799 A US3199799 A US 3199799A US 238909 A US238909 A US 238909A US 23890962 A US23890962 A US 23890962A US 3199799 A US3199799 A US 3199799A
Authority
US
United States
Prior art keywords
blade
recess
detent
cutter
support member
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
US238909A
Other languages
English (en)
Inventor
Sybertz Hans
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.)
Hombak Maschinenfabrik KG
Original Assignee
Hombak Maschinenfabrik KG
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
Publication date
Application filed by Hombak Maschinenfabrik KG filed Critical Hombak Maschinenfabrik KG
Application granted granted Critical
Publication of US3199799A publication Critical patent/US3199799A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G13/00—Cutter blocks; Other rotary cutting tools
    • B27G13/02—Cutter blocks; Other rotary cutting tools in the shape of long arbors, i.e. cylinder cutting blocks
    • B27G13/04—Securing the cutters by mechanical clamping means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9319—Toothed blade or tooth therefor
    • Y10T83/9321—With means to vary tooth position

Definitions

  • the cutter body of such apparatus is provided with one or more blade members which are held in place by a tightening screw or wedge means to insure a rigid positiomg of the blade member even upon rotation of the body.
  • a tightening screw or wedge means to insure a rigid positiomg of the blade member even upon rotation of the body.
  • lt is an Object of the present invention to provide a cutter of the character described wherein the blades are secured With a simplified but nevertheless emcient means.
  • a more Specific obect of the invention is to provide Screw means for the blade of a cutter bar Wherein the (lisadvantages of earlier arrangements employing clamping bolts, wedges, etc., are entirely obviated.
  • a cutter with at least One outwardly open peripheral recess and blade means mounted in said recess with a Securing means yieldable bearing on the blade means in a stationary condition of the body but including a detent whose center of gravity is ofset from a pivotal aXis parallel to the aris of rotation of the body whereby the detent surface bears upon the blade means under the action of centrifugal force upon rotation of the body.
  • the recess is provided with an undercut portion against which the blade means is held by the detent whose center of gravity S disposed between this undercut portion and a common plane of the body and pivotal aXeS.
  • tr e blade means may be formed with a pair of Outwardly converging surfaces, one of which is engaged by the detent to wedge the blade means within the recess while the other abuts a wall thereof.
  • the detent member is provided with a clamping Surface eccentric with respect to the pivotal aXis and bearing upon a wedge Surface of the blade means.
  • the blade means is, referably, provided with a camming surface engageabie with the detent for urging it away from the undercut portion of the recess whereby the blade means can be inserted into the recess into seating relationship therein.
  • a detent member bears resiliently upon the blade means under the action of one or more springs for pre- Venting the blade from slipping out of the recess in the stationary condition of the body.
  • the blade means referred to may simply be a blade shaped to conform to the configuration of the recess, prefer to employ a blade-support member upon w ich a blade is removably mounted.
  • the blade-Support member may, therefore, be provided with the requisite chip-clearing channel and a seating surface adapted to engage positively the walls of the recess. Since there is no tendency for the blade to Shift Within the recess, the entry of dust, chips and other particles between the seating surface is obviated,
  • the detent member may be provided with one or more arms extending radi ly from its pivotal aXis and bearing, at their free extremities, a mass centrifugaliy displaceable upon rotation of the body.
  • FG. 1 is a radial cross-sectional View through a rotary cutter embodying the invention
  • FIG. 2 is a cross-sectional view taken along line lI of FG. l and drawn to a reduced Scale;
  • FG. 3 is a view taken aiong the line lll-lll of FlG. l, With parts broken away, and drawn to the same Scale as FG. 2.
  • n FG. 1 Show a portion of the cutter of a woodcomminutin machine which is provided with a plura'ity of angularly spaced blades extending outwardly from the periphery of the cutter body l. Although the present drawing shows but a single one of these blades, it should be understood that identical means can be emp oyed to secure the remaining blades in place. n ad on, it should be noted that Such securing means are also effective for wCod-shaping apparatus and other devices employing a rotary Cutter body.
  • the body 1 is formati with a recess 2 having an undercut portion 'L
  • a plurality of bolts 3 (FGS. 1 and 2) secure a journal block 4 within this recess.
  • This block carries a sha 5 about which the arm i of a weighted dotent member (J is journaled.
  • Arm 51 is, of course, representative of any means articu ng the detent member upon shaft 5 and may be replaced Dy a plurality of aXially spaced radial arms as Will be readily apparent.
  • the center of gravity ltl of the detent mem er 5 is of set from its pivotal aXis (i.e., that of shaft 5) and is disposed intermediate an aial plane of body l passing through shaft 5 and the undercut surface 16 CI" the recess so that rotation of the body effects a displacement of the detent member COHHCAOC'KWS into engagement With blade means 33, 14.
  • the blade means comprises a support 13 upon Which the blade l i is adjustably secured by screws 19 Which pass through slots 18 in the blade into engagenlent with the body.
  • the support 13 has its lower end seated against a surface 17 of the recess and is provided With a channel 15 for clearing chips of Wood removed by the blade.
  • the detent member 6 is formed with an axially extending protuberance 11 Which is eccentric With respect to the pivotal aXis of the detent and thus bears upon a Wedge surface 12 of the support to clamp the latter against the undercut Wall M of the recess upon rotation of the body 1.
  • Surface Z and wall 16 converge outwardly to effect a wedge- &199,799
  • support 13 is provided With a camming Surface 20 which acts upon the protuberance 11 upon generally radial insertion of the support 13 into the recess 2 to rotate the detent 6 clockwise to clear the support.
  • Springs 7 are received Within bars 7' in the detent member and bear upon pins 8 Shiftable Within these bars in a direction generally transverse to the aforementioned aXial plane. Pins 8 bear upon wall surfaces 9 of the recesses 2 whereby the detent member 6 is yieldably biased against the blade support 13.
  • This spring means is, like the center of gravity 16 of the detent, Spaced from the shaft by a distance greater than that between the latter and the protuberance 11 so that both the Spring and centrifugal actions are applied to the blade means With mechanical advantage.
  • a cutter for a Wood-comminuting machine comprising a generally cylindrical body rotatable about an aXis and formed With at least one outwardly open peripheral recess; blade means seated in said recess, Said blade means Comprising a blade-support member and a blade mounted upon said support member; and securing means in said recess yieldably bearing upon said support member for clamping said blade means releasably within said recess in a stationary condition of said body and Centrifugally actuatable to Wedge said blade means in said recess upon rotation of said body, said securing means including a journal block secured Within said recess, an aXially extending Shaft in said block, a weighted detent member SWingably mounted on said shaft and having a center of gravity intermedia-te an aXial plane of Said body through said shaft and said support member, said members being formed With co-operatng surfaces for Wedging said support member Within said recess upon said rotation of Said body, and
  • a cutter for a wood-shaving machine comprising a body rotatable about an axis and formed With an out- Wardly open peripheral recess, Said recess having an undercut portion; blade means removably Seated in said portion of said recess, said blade means including a bladecarrying member and a blade mounted upon Said blade-carrying member; support means including a journal block secured to said body Within said recess and forming a pivot parallel to said aXis; and detent means sWingably mounted on said journal block in said recess for angular displacement about said pivot, said detent means having a center of gravity oset from said pivot and a laterally projecting, axially extending protuberance cammingly engageable With said blade means for holding 'said blade-carrying member against the undercut portion of said recess and upon rotation of said body to centrifugally urge said detent means against said blade-carrying member; and resilient means bean'ng upon said detent means and yield
  • a cutter for a Wood-shaving machine comprising a body rota-table about an aXis and formed With an out- Wardly open peripheral recess, said recess including an undercut portion having an inclined abutment Wall; blade means removably seated in said portion of Said recess, Said blade means including a blade-carrying member having a pair of contact surfaces converging in an Out- Ward direction from said recess, said blade means including a blade mounted upon one of the contact surfaces of said blade-carrying member and seated against said inclined abutment surface; support means including a journal block secured to Said body Within said recess and forming a pivot parallel to said aXis; detent means swingably mounted on said journal block in said recess for angular displacement about said pivot, said detent means having a center of gravity oset from Said pivot and a laterally projecting, aXially eXtending protuberance cammngly engageable With the other contact surface of said blade
  • said resilient means Comprises at least one spring bearing upon said detent member.
  • a cutter as defined in claim 3 Wherein Said spring is effective at a location on said detent member spaced from said pivotal aXiS by a distance greater than the distance between Said pivotal aXiS and said surface.
  • a cutter as defined in claim 3 Wherein said center of gravity is located at a distance from said pivot greater than the distance between said pivot and said protuberance.

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)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
US238909A 1961-11-20 1962-11-20 Cutter for wood-shaving machine Expired - Lifetime US3199799A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH44175A DE1152811B (de) 1961-11-20 1961-11-20 Halterung fuer Messer in der Messerwelle einer Holzzerspanungsmaschine

Publications (1)

Publication Number Publication Date
US3199799A true US3199799A (en) 1965-08-10

Family

ID=7155419

Family Applications (1)

Application Number Title Priority Date Filing Date
US238909A Expired - Lifetime US3199799A (en) 1961-11-20 1962-11-20 Cutter for wood-shaving machine

Country Status (4)

Country Link
US (1) US3199799A (de)
CH (1) CH402381A (de)
DE (1) DE1152811B (de)
FR (1) FR1339343A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2476530A1 (fr) * 1980-02-27 1981-08-28 Saturne Dispositif porte-outils pour machines-outils
US4546929A (en) * 1982-06-04 1985-10-15 Fritsch Rudolf P Rotary cutting tool, particularly for comminuting plastic material
WO1997012734A1 (de) * 1995-10-02 1997-04-10 Robert Bosch Gmbh Hobelmaschine, insbesondere handhobelmaschine
US6092573A (en) * 1998-08-07 2000-07-25 Robert Bosch Gmbh Plane head for a planing machine
US6173637B1 (en) * 1998-08-17 2001-01-16 Lrh Enterprises, Inc. Molding cutter head

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1528327C2 (de) * 1966-02-09 1975-07-10 Kirsten, Paul A , Dr Ing , 5300 Bonn Beuel Zylindrischer oder konischer Werkzeugträger fur eine Holzzerspanungsmaschine
FR2200089B1 (de) * 1972-09-16 1976-05-14 Hombak Maschinenfab Kg
FR2931382B1 (fr) * 2008-05-26 2016-09-23 Oclid Dispositif de coupe pour machine de coupe,a avance manuelle ou mecanisee,de pieces a decouper et porte-outil pour un tel dispositif de coupe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US86850A (en) * 1869-02-09 Improvement in saws
DE915265C (de) * 1951-09-29 1954-07-19 Paul Kirsten Dr Ing Messerwelle fuer Holzbearbeitungsmaschinen mit keilartig wirkenden Druckleisten
US3014511A (en) * 1959-03-12 1961-12-26 Kirsten Paul Arthur Rotary tool for woodworking and woodcutting machines
US3017912A (en) * 1958-10-01 1962-01-23 Hombak Maschinenfab Kg Blade structure and mounting means for a cylinder type cutter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US86850A (en) * 1869-02-09 Improvement in saws
DE915265C (de) * 1951-09-29 1954-07-19 Paul Kirsten Dr Ing Messerwelle fuer Holzbearbeitungsmaschinen mit keilartig wirkenden Druckleisten
US3017912A (en) * 1958-10-01 1962-01-23 Hombak Maschinenfab Kg Blade structure and mounting means for a cylinder type cutter
US3014511A (en) * 1959-03-12 1961-12-26 Kirsten Paul Arthur Rotary tool for woodworking and woodcutting machines

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2476530A1 (fr) * 1980-02-27 1981-08-28 Saturne Dispositif porte-outils pour machines-outils
US4546929A (en) * 1982-06-04 1985-10-15 Fritsch Rudolf P Rotary cutting tool, particularly for comminuting plastic material
WO1997012734A1 (de) * 1995-10-02 1997-04-10 Robert Bosch Gmbh Hobelmaschine, insbesondere handhobelmaschine
CN1080172C (zh) * 1995-10-02 2002-03-06 罗伯特-博希股份公司 刨机尤其是手持式电刨
US6092573A (en) * 1998-08-07 2000-07-25 Robert Bosch Gmbh Plane head for a planing machine
US6173637B1 (en) * 1998-08-17 2001-01-16 Lrh Enterprises, Inc. Molding cutter head

Also Published As

Publication number Publication date
FR1339343A (fr) 1963-10-04
DE1152811B (de) 1963-08-14
CH402381A (de) 1965-11-15

Similar Documents

Publication Publication Date Title
US3199799A (en) Cutter for wood-shaving machine
US2244577A (en) Mill hammer
US3307235A (en) Clamping device
US3098614A (en) Impellers for comminutors
US2782811A (en) Swiveling blade-guide attachment for contour sawing machines
GB1075764A (en) Improvements in rolling or milling machines
US2747291A (en) Gauge for setting planer blades
US2478026A (en) Tool for beveling commutator segments
US1909832A (en) Saw grinding machine
US2958474A (en) Hammer crush rotor
US3812752A (en) Saw for cold metals
US1946763A (en) Rock-crushing machine
US2900768A (en) Annular knife sharpener
US1170370A (en) Crusher.
US2106712A (en) Sole fitting machine
US1935805A (en) Device for truing collector rings of rotary converters
US3427696A (en) Machine tool table locking mechanism
US4213572A (en) Blade holder
US1986457A (en) Cutting cushion for folding cylinders
US1807794A (en) Biuish ajjd current collector
US2579360A (en) Tool
US3827643A (en) Wood comminuting apparatus
US288840A (en) miles
US869270A (en) Stay-log.
US1947783A (en) Crushing apparatus