US20020031991A1 - Sharpening unit with disc wear recovery for stick or log cutting machine - Google Patents

Sharpening unit with disc wear recovery for stick or log cutting machine Download PDF

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Publication number
US20020031991A1
US20020031991A1 US09/911,018 US91101801A US2002031991A1 US 20020031991 A1 US20020031991 A1 US 20020031991A1 US 91101801 A US91101801 A US 91101801A US 2002031991 A1 US2002031991 A1 US 2002031991A1
Authority
US
United States
Prior art keywords
cutting
disc
central shaft
sharpening unit
lever
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
Application number
US09/911,018
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English (en)
Inventor
Giovanni Gambini
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of US20020031991A1 publication Critical patent/US20020031991A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
    • B24B3/368—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades installed as an accessory on another machine
    • 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
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/12—Means for treating work or cutting member to facilitate cutting by sharpening the cutting member

Definitions

  • the present invention refers to a sharpening unit with disc wear recovery for a stick or log cutting machine.
  • cutting to size of these final rolls is performed by cutting machines which receive the individual log, for example, and cut it in succession into a number of shorter rolls, each with the required dimensions.
  • the main object of the present invention is to produce a sharpening unit that solves the above problems.
  • a further object of the present invention is to produce a unit for sharpening the discs of a cutting machine that eliminates the problems with connection of the electrical and electronic parts by means of rotating elements.
  • a further object of the present invention is to produce a unit for sharpening the discs of a cutting machine in which the moving masses are reduced to a minimum, eliminating all related problems.
  • FIG. 1 is a front view of a sharpening unit with disc wear recovery fitted on the head of a stick or log cutting machine
  • FIG. 2 is a rear partial enlarged view of part of the unit of FIG. 1;
  • FIG. 3 is a section view along the line III-III of FIG. 1;
  • FIG. 4 is an enlarged view, partly in section, of part of half the unit shown in FIG. 1 illustrating one single cutting head and the respective part of the sharpening unit.
  • a sharpening unit 11 is shown with wear recovery of a cutting disc 12 for the head 15 of a stick or log cutting machine, schematised in 13 , on a feed surface 14 .
  • the cutting unit consisting of two cutting heads 15 arranged diametrically opposite each other, is fitted on a general cross member 16 which can be moved up and/or down with respect to the feed surface 14 by means of a control unit, not shown, and is rotated by means of a central shaft 17 .
  • a sleeve 18 is fixed to the cross member 16 and is positioned coaxial externally to the central shaft 17 , which passes inside it.
  • the sleeve 18 supports, revolving via bearings 19 , a rotating arm 20 which extends from both sides of the central shaft 17 and is fitted with a pair of cutting heads 15 of the cutting machine.
  • Each cutting head 15 has its own structure and is fitted with the above-mentioned cutting disc 12 .
  • the cutting disc 12 is rotated by a kinematic chain (not specifically shown) fitted at the end with a timing pulley 21 moved by a timing belt 22 , due also to the presence of relay pulleys 23 .
  • a profiled box 24 bearing the moving part of the cutting disc 12 is rotated by a further pulley 25 , controlled by a belt 26 , with relay pulleys 23 , and coaxial to the timing pulley 21 .
  • Each cutting disc 12 rotates around a rotation axis 27 which can be moved according to the movements of the rotating arm 20 and profiled box 24 .
  • the sharpening unit 11 is positioned in a cutting machine of the type described above.
  • the sharpening unit 11 comprises, revolving axially around the rotation axis 27 of each cutting disc 12 , a lever 28 supported at one end by bearings 29 .
  • the lever 28 houses a linear guide 30 bearing a trolley 31 on which two grinding wheels 33 are fitted by means of a supporting plate 32 .
  • the two grinding wheels 33 each have X axis slanting in the opposite direction to the other grinding wheel axis thus collaborating from opposite sides with the cutting edge 35 of the cutting disc 12 .
  • the trolley 31 bears half of an articulated joint such as a hinged joint or a ball joint 36 , the second half of which is positioned on a further lever 37 controlled by a secondary rotation shaft 38 positioned coaxially inside the central shaft 17 , which is the fulcrum of the lever 37 .
  • the lever 37 is also supported by bearings 39 on the outer surface of the central shaft 17 which bears the rotating arm 20 with the cutting discs 12 .
  • the secondary rotation shaft 38 is thus independent of the central or main rotation shaft 17 .
  • the main rotation shaft 17 of the rotating arm 20 and the secondary rotation shaft 38 of the further lever 37 are connected to an angle timing device 40 .
  • Said angle timing device 40 takes its movement from a main motor 42 and, via a transmission with differential inside the timing device 40 , permits transmission in a ratio of 1/1 between the two outlet shafts 17 and 38 .
  • This angle timing device 40 has the job of angle timing the two shafts 17 and 38 also with the shafts moving.
  • synchronised movement elements can be provided such as electronic or electromechanical means for coordinating rotation of the central shaft and secondary shaft.
  • a retiming motor 41 of the angle timing device 40 varies the angle between the main tool holder arm 20 and the wear control lever 37 on the cutting discs 12 .
  • Variation of this angle involves sliding of the grinding wheel trolley 31 on the linear guide 30 positioned on the lever 28 hinged coaxially to each cutting disc 12 . Sliding of the trolley 31 causes the grinding wheels 33 fitted on the same to move nearer or farther away from the centre of the disc.
  • a sharpening unit therefore permits sharpening of the cutting discs while they are moving, without any problem, directly preparing for said operation as the cutting disc diameter is gradually reduced by wear.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
US09/911,018 2000-07-27 2001-07-23 Sharpening unit with disc wear recovery for stick or log cutting machine Abandoned US20020031991A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2000A001722 2000-07-27
IT2000MI001722A IT1318260B1 (it) 2000-07-27 2000-07-27 Gruppo di affilatura con recupero usura disco per macchina troncatrice di bastoni o log

Publications (1)

Publication Number Publication Date
US20020031991A1 true US20020031991A1 (en) 2002-03-14

Family

ID=11445579

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/911,018 Abandoned US20020031991A1 (en) 2000-07-27 2001-07-23 Sharpening unit with disc wear recovery for stick or log cutting machine

Country Status (6)

Country Link
US (1) US20020031991A1 (fr)
EP (1) EP1175974B1 (fr)
AT (1) ATE297300T1 (fr)
DE (1) DE60111307T2 (fr)
ES (1) ES2243392T3 (fr)
IT (1) IT1318260B1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060000312A1 (en) * 2002-10-18 2006-01-05 Fabio Perini S.P.A. Cutting machine with a sharpening unit for a blade, sharpening method and blade for said machine
US20170282395A1 (en) * 2014-08-29 2017-10-05 Fabio Perini S.P.A. Machine for cutting logs with grinding wheels and method
CN111051023A (zh) * 2017-07-18 2020-04-21 法比奥·泼尼股份公司 切割细长产品的切割机及相关方法
CN113618538A (zh) * 2021-07-23 2021-11-09 陆世彪 一种制造铁锹用木棒旋转打磨设备
CN115139165A (zh) * 2022-09-01 2022-10-04 苏州圣亚精密机械有限公司 一种机床刀具修整磨削结构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITFI20050113A1 (it) * 2005-05-27 2006-11-28 Perini Fabio Spa Macchina troncatrice per il taglio di rotoli o log di materiale nastriforme e relativo metodo
CN102873599B (zh) * 2012-10-27 2014-10-29 株洲肯特硬质合金有限公司 一种圆形刀片的刃口倒棱装置及倒棱方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1103635B (it) * 1978-07-27 1985-10-14 Perini Fabio Macchina a piu lame per tagliare in rotoli un cilindropdi carta od altro
US4347771A (en) * 1980-11-10 1982-09-07 Paper Converting Machine Company Apparatus for sharpening a disc
US4584917A (en) * 1984-12-06 1986-04-29 Paper Converting Machine Company Automatic blade diameter compensation for log saws
US5152203A (en) * 1991-08-19 1992-10-06 Paper Converting Machine Company Apparatus and method for sharpening saw blades having planetary motion in transverse cutting
IT1258171B (it) * 1992-02-07 1996-02-20 Perini Fabio Spa Metodo di taglio e macchina troncatrice per rotoli di carta e simili
US5557997A (en) * 1994-04-06 1996-09-24 Paper Converting Machine Company Apparatus for transverse cutting

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060000312A1 (en) * 2002-10-18 2006-01-05 Fabio Perini S.P.A. Cutting machine with a sharpening unit for a blade, sharpening method and blade for said machine
US20170282395A1 (en) * 2014-08-29 2017-10-05 Fabio Perini S.P.A. Machine for cutting logs with grinding wheels and method
US20190099909A1 (en) * 2014-08-29 2019-04-04 Fabio Perini S.P.A. Machine for cutting logs with grinding wheels and method
US10647015B2 (en) * 2014-08-29 2020-05-12 Fabio Perini S.P.A. Machine for cutting logs with grinding wheels and method
US10919169B2 (en) * 2014-08-29 2021-02-16 Fabio Perini S.P.A. Machine for cutting logs with grinding wheels and method
CN111051023A (zh) * 2017-07-18 2020-04-21 法比奥·泼尼股份公司 切割细长产品的切割机及相关方法
CN111051023B (zh) * 2017-07-18 2021-09-28 法比奥·泼尼股份公司 切割细长产品的切割机及相关方法
CN113618538A (zh) * 2021-07-23 2021-11-09 陆世彪 一种制造铁锹用木棒旋转打磨设备
CN115139165A (zh) * 2022-09-01 2022-10-04 苏州圣亚精密机械有限公司 一种机床刀具修整磨削结构

Also Published As

Publication number Publication date
ITMI20001722A0 (it) 2000-07-27
EP1175974A3 (fr) 2003-11-19
ES2243392T3 (es) 2005-12-01
EP1175974B1 (fr) 2005-06-08
DE60111307D1 (de) 2005-07-14
IT1318260B1 (it) 2003-07-28
EP1175974A2 (fr) 2002-01-30
ITMI20001722A1 (it) 2002-01-27
DE60111307T2 (de) 2006-05-24
ATE297300T1 (de) 2005-06-15

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Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION