• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A cutter head the entire cutting width of which is divided into a few parallel cutting strips defined by respective sets of cutting knives. The diameters of the cutting circles of the knives of the different sets increase stepwise in the direction away from the log. The angle of inclinaton of the main cutting edge of the knives in relation to the axis rotation of the cutter head is large in the case of the knives defining the cutting strips placed closest to the log and small in the case of the knives defining the cutting strips placed more distant from the log.
    公开号:SU1264834A3
    申请号:SU772507518
    申请日:1977-07-29
    公开日:1986-10-15
    发明作者:Микаэл Кивимаа Эро
    申请人:и；
    IPC主号:
    专利说明:

    The invention relates to cutting heads and is intended for the longitudinal cutting of logs and trimming the edges of boards with the simultaneous development of a technological whit and obtaining smooth machined surfaces.
    The purpose of the invention is to improve the quality of wood chips.
    In FIG. 1 shows the proposed cutting head; in FIG. 2 - the same, Yu top view.
    The cutting head includes a hub 2 mounted on the shaft 1 with cutting knives 3, 4 and 5. A disk is attached to the hub 2; saw 6 with six narrow 15 knives 7.
    Log 8 is fed to the cutting head at a speed of U.
    The shaft 1 of the cutting head is perpendicular to the feed direction 20 of the log with the possibility of movement along its axis.
    The cutting knives 3, 4 and 5 are arranged in parallel rows and are staggered, with knives of different 25 rows arranged in circles, the diameter of which increases stepwise from the first row to the next.
    The cutting edges 9, 10 and 11 of the knives 30 3, 4 and 5 are inclined to the axis of the shaft, the value of which in the first row is 55-75 °, and in the remaining sections - no more than 30 °.
    In the proposed design, the cutting sections of the head have the following dimensions: total width 1 = 120 mm, section width a = 5 mm, section = 25 mm, i.e. the width of the actual cutting zone is 30 mm or 1 / 4E .. 40
    The si d sections, which almost do not cut, have a width of 45 mm each, i.e. their total width is 3/4 of the entire width of the head E.
    The angles of inclination of the main cutting edges - 4 5 mok are equal respectively to k = k, = = 65 v ; k e = 25 °, Kj = 0.
    In laboratory studies, experiments were carried out on cutting spruce wood of ordinary quality using 50 different knives with tilt angles of 5-75 °. The best chips were obtained using knives with an angle of inclination of 65 °. At the same time, the amount of small chips passing through the holes 55 of a sieve of 6 mm is, of course, 0.7% of the total amount of chips. The percentage of fine chips is one of the most important criteria characterizing the quality of the chips. At an inclination angle of 45 a , i.e. at an angle that is usually used in practice, the amount of fine chips is 2.3%, at an angle of inclination of 25 ° - 2.9%, and at an angle of 5, 7.2%.
    Calculations have been performed that allow one to establish how the total amount of chips is distributed over sections of cutting head cutting with different widths. When processing logs with increased versus medium taper with a relatively narrow (1 = 120 mm) head, the resulting beam has a slightly larger versus average thickness. In the calculations, a log 4.5 m long is considered as a regular truncated cone with a top diameter of 200 mm and a base diameter of 260 mm. When the thickness of the beam at the top is 10 mm, and at the base of 40 mm it turns out that the volume of one beam is 6% of the volume of the log. When trimming the top, the width of the part involved in the cutting process is 10 mm, and when trimming, the base is 40 mm, i.e. 1/3 of the total width t. When considering the distribution of the cubic volume of the beam, the calculations show that the proportion of the cutting section of the head is 5 mm closest to the log, i.e. in this case, the final plot is 26% of the total volume of timber. Therefore, the total share of the cutting section with a width of 30 mm (o + b) should be 97%, and the share of the reserve zone, which is 3/4 of the total head width (C + d), should be only 3%.
    The proposed design of the cutting head improves the quality of wood chips and _> provides its open formation and ease of removal.
    权利要求:
    Claims (2)
    [1]
    The invention relates to cutting heads and is intended for slitting logs and trimming the edges of boards with the simultaneous development of technological shepa and obtaining smooth machined surfaces. The purpose of the invention is to improve the quality of the chips. FIG. 1 depicts the proposed cutting head; in fig. 2 - the same, top view. The cutting head includes a shaft 2 installed on the shaft 1 with cutting knives 3, 4 and 5. A disk is attached to the hub 2; Saw 6 with six narrow knives 7, Log 8 is supplied to the cutting head at speed W. The shaft 1 of the cutting head is perpendicular to the feed direction, the log is movable along its axis. Cutting knives 3, 4, and 5 are arranged in parallel rows and are installed in a checkerboard pattern, with the knives once personal rows arranged in circles, the diameter of which increases stepwise from the first row to the next. Cutting edges 9, S and P knives 3, 4 and 5 are inclined to the axis of the shaft, the magnitude of which in the first row is 55-75, and in the remaining sections it is no more than 30. In the proposed design, the cutting head sections have the following dimensions: total width t 120 mm, Section width about 5 mm, section 25 mm, t, the width of the actual cutting zone is 30 mm or 1 / 4C. no cutting, 45 mm wide each, i.e. their total width is 3/4 of the entire width of the head E. The angles of inclination of the main cutting edges are k, Cr 25 Kj 0, respectively. In laboratory studies, experiments have been carried out on cutting high-quality spruce wood using different knives that have angles nak lona 3-75. The best chips were obtained when using knives with a tilt angle of 65. At the same time, the amount of small chips passing through the 6 mm sieve holes was only 0.7% of the total amount of chips. The percentage of fine chips is one of the most important criteria for chip quality. With a tilt angle of 45, i.e. at coal, which is usually used in practice, the amount of small chips is 2.3%, at a tilt angle of 2.9%, and at an angle of 5 ° 7.2%. Calculations have been carried out to determine how the total amount of chips is distributed over the cutting heads of the cutting head, which are different in width. When machining a log with a medium versus taper with a comparatively narrow (f 120 mm) head, the resulting timber has a somewhat larger versus average thickness. In the calculations, a log 4.5 m long is considered as a regular truncated cone with a tip diameter of 200 mm and a base diameter of 260 mm. With a bar thickness at the top of 10 mm, and at the base of 40 mm, it is obtained that the volume of one bar is 6% of the log. When trimming the tip, the width of the area involved in the cutting process is 10 mm, and when trimming, the base is 40 mm, i.e. 1/3 of the total width t. When considering the distribution of the cubic volume of a timber, calculations show that the proportion of the section of the head’s reamer is 5 mm closest to the log, i.e. in this case, the finishing area is 26% of the total bar volume. Consequently, the total share of the 30 mm wide cutting edge (+ b) should be 97%, and the share of the reserve zone, 3/4 of the entire head width (C + d), should be only 3%. The proposed design of the cutting bare increases the quality of the chips and ensures its open formation and ease of removal. Claims. Cutting head for longitudinal cutting of logs and trimming the edges of boards with simultaneous production of process chips and obtaining smooth machined surfaces, including wa.11, moving in a plane, perpendicular to the feeding of logs and a hub mounted on the shaft with cutting blades arranged in parallel rows, the main the cutting edges of the knives are straight, and the knives of different rows are located in the shahmahom order fto will circle m which increases in steps from the first row to the next, which differs from the purpose of improving the quality of the chips, the cutting edges of the knives have a slope to the axis of the shaft, the value of which in the first row is 55-75
    and on the rest
    in the plots - no more than 30
    [2]
    2. Head POP.1, characterized in that the width of the first row of cutting knives is 10-30% of the total width of all the rows.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1264834A3|1986-10-15|Cutting head
    SE451247B|1987-09-21|CUTTING AND WAY TO MANUFACTURE IT
    US3330315A|1967-07-11|Log reducer
    US3324909A|1967-06-13|Apparatus and process for peeling logs
    US4396315A|1983-08-02|Cutting tools
    DE3128963C2|1989-11-30|
    US4305440A|1981-12-15|Cutting tool
    US4263949A|1981-04-28|Cutter head
    US6026872A|2000-02-22|System for producing cants and wood chips
    US5782278A|1998-07-21|Cant forming device
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    US3414029A|1968-12-03|Knife for cutting lumber
    US3842873A|1974-10-22|Cutter head for a bark removing machine
    US4131146A|1978-12-26|Helical flaking head with multiple cutting circle diameters
    US7137421B2|2006-11-21|Chipper knife
    SU448624A3|1974-10-30|Cutting head for roundwood processing
    SU990522A2|1983-01-23|Cutting blade for helical chopping machines
    US3750726A|1973-08-07|Chipping knives for chipping head assemblies
    DE1528311C3|1974-05-16|
    US2178589A|1939-11-07|Method of and apparatus for facemilling
    SU872044A1|1981-10-15|Boring head
    DE60217913T2|2007-10-25|PROCESS FOR PLANKING OF ROUND WOOD
    SU514664A1|1976-05-25|Self-rotating cutter
    DE2347716A1|1974-03-28|WOOD CHIPPING MACHINE
    DE2529123A1|1977-01-27|Tree trunk or board trimmer rotary cutter head - has system for complete coverage of width of cut using radially spaced blades
    同族专利:
    公开号 | 公开日
    SE432733B|1984-04-16|
    FI55784C|1979-10-10|
    CA1049383A|1979-02-27|
    SE7708706L|1978-01-31|
    FI55784B|1979-06-29|
    NO772653L|1978-01-31|
    NO144290C|1981-08-05|
    NO144290B|1981-04-27|
    FI762180A|1978-01-31|
    US4147193A|1979-04-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1472960A|1922-10-28|1923-11-06|O K Tool Co|Disk cutter having staggered series of side teeth|
    US3330315A|1964-05-09|1967-07-11|Dominion Tar & Chemical Co|Log reducer|
    US3360024A|1964-08-05|1967-12-26|Linck Geb|Apparatus for dividing logs into chips|
    US3776288A|1967-04-12|1973-12-04|D Johnson|Blade assemblies for flacing apparatus|
    US3570567A|1969-03-13|1971-03-16|Mac Millan Bloedel Ltd|Wood chip cutting apparatus|
    US3732907A|1970-06-12|1973-05-15|Pitea Maskin Industri|Device for separating small pieces from a work piece of material|
    SE381601B|1972-09-21|1975-12-15|Kockums Ind Ab|MOWER|US4263949A|1977-11-24|1981-04-28|Kivimaa Eero Mikael|Cutter head|
    US4266584A|1979-06-27|1981-05-12|Mainland Industries, Inc.|Edger saw combining chipper with circular saw blade|
    US4456045A|1983-01-13|1984-06-26|Gregoire James L|Dual rotation chipping head|
    US4759394A|1987-11-27|1988-07-26|Clemenson Lyle J|Stump cutting tooth structure|
    US4998574A|1989-12-01|1991-03-12|Kennametal Inc.|Cutting bit and block mount|
    US5005622A|1990-02-16|1991-04-09|Kennametal Inc.|Block and locking mechanism for a stump grinding cutter bit and method of securing and retaining|
    US5713525A|1995-03-31|1998-02-03|Wood Technology, Inc.|Horizontal comminuting machine particularly for recyclable heavy wood randomly carrying non-shatterable foreign pieces|
    DE19607318C3|1996-02-27|2002-11-21|Uwe Heisel|Milling tool with reduced noise emissions, preferably for formatting plate-shaped components|
    DE19832499C2|1998-07-20|2002-07-18|Ledermann & Co|cutting tool|
    SE0103967L|2001-11-28|2003-04-08|Iggesund Tools Ab|Procedure for planing a circular stock and blind knife|
    IL174720A|2006-04-02|2010-04-15|Alexander Khina|Cutting tool|
    US7261132B1|2006-05-09|2007-08-28|Duplessis Louis A|Base plate circular cutter|
    DE102012206116A1|2012-04-13|2013-10-17|Hilti Aktiengesellschaft|tacker|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI762180A|FI55784C|1976-07-30|1976-07-30|COUPLE INTERESTS|
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