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US3886372A - Producing signals denoting location of edges of a finished surface on a partly finished workpiece - Google Patents

Producing signals denoting location of edges of a finished surface on a partly finished workpiece Download PDF

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Publication number
US3886372A
US3886372A US445429A US44542974A US3886372A US 3886372 A US3886372 A US 3886372A US 445429 A US445429 A US 445429A US 44542974 A US44542974 A US 44542974A US 3886372 A US3886372 A US 3886372A
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US
United States
Prior art keywords
workpiece
top surface
scanning
reflector
zone
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
US445429A
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English (en)
Inventor
Benkt Sanglert
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.)
Saab Wood AB
Original Assignee
Saab Scania AB
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Filing date
Publication date
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Publication of US3886372A publication Critical patent/US3886372A/en
Assigned to SAAB WOOD AKTIEBOLAG, A SWEDISH JOINT STOCK COMPANY reassignment SAAB WOOD AKTIEBOLAG, A SWEDISH JOINT STOCK COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: SAAB-SCANIA AKTIEBOLAG
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • 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
    • B27B31/00—Arrangements for conveying, loading, turning, adjusting, or discharging the log or timber, specially designed for saw mills or sawing machines
    • B27B31/06—Adjusting equipment, e.g. using optical projection

Definitions

  • a cant is an elongated piece having substantially flat and parallel top and bottom finished surfaces but having unfinished longitudinal side surfaces which may be very irregular and which are usually oblique to the top and bottom surfaces. Since the cant is to be made into one or more finished pieces that have side surfaces which are accurately perpendicular to the alreadyfinished top and bottom surfaces, a certain amount of wood will be discarded in the finishing process. In the interests of economy, the finishing cuts must be so planned that the least possible amount of wood will be discarded. It will be evident that the orientation and spacing of the finishing cuts that will achieve best economy of material are dependent upon the configuration of the narrower one of the two finished surfaces of the cant, which narrower surface can be regarded as its top surface.
  • a cant was moved transversely to its length beneath spaced apart photoelectric cells that were arranged in a row extending lengthwise of the cant. As the cant approached the photoelectric cells, it was illuminated by light from a first source that shone upon it from behind its trailing edge and at a low angle of incidence to its top surface, so that its leading oblique side surface was unilluminated. Each of the photoelectric cells therefore produced an output signal that underwent an abrupt increase in magnitude as the front edge of the top surface came under it.
  • the first source of light was extinguished and simultaneously a second light source was turned on that illuminated the cant, again at a low angle of incidence to its top surface, but this time from in front of its leading edge so that its rear oblique side surface was unilluminated.
  • the signal from each photocell underwent an abrupt decrease in magnitude as the rear edge of the top surface passed under it.
  • the general object of the present invention is to overcome these disadvantages and to enable suitable inputs to be delivered to a computer from a single photocell that produces a rapid succession of signals which denote the location of each of the opposite longitudinal edges of the top surface of a cant or similar partly finished workpiece at each of a large number of stations that extend across the workpiece and are spaced from one another at close intervals along its length.
  • Another object of the invention is to provide a method and means for making rapid, automatic measurements of cants and similar workpieces in a manner that is practical for computer control of the finishing operation, thus making possible the elimination ofa tedious and rather difficult type of labor and the attainment of substantial savings of valuable material.
  • FIG. 1 is a more or less diagrammatic perspective view of apparatus embodying the principles of the present invention.
  • FIGS. 2a and 2b are diagrammatic perspective views which illustrate alternative methods of illuminating the 3 workpiece for scanning in accordance with the method of this invention.
  • the numeral 5 designates generally an elongated partly fiir ished workpiece. here illustrated as it cant that has been sawed from a log and has only its top and bottom stirfaces finished.
  • the opposite longitudinal side surfaces 6 and 7 of the cant which are unfinished and may be somewhat irregular, extend obliquely downwardly and laterally outwardly from the finished top surface 8.
  • the cant 5 is to have its opposite side portions removed. so that it will be brought to the form of a paral lelopiped, with side surfaces accurately parallel to one another and perpendicular to the top and bottom sur faces. Such finishing is accomplished by means of an edging machine that can comprise a pair of cutters. illustrated as two saw blades 9 and It). The cuts made by the cutters must provide for one or more finished work pieces of standardized width or widths, with a minimum wastage of stock.
  • the amount of material in the cant that is available for finished product obviously depends upon the con figuration of the narrower of the two finished surfaces of the partly finished workpiece. This is to say that the finishing cuts are calculated upon the basis of the shape and spacing ofthe longitudinal side edges 11 and 12 of the finished top surface 8. said edges being defined by the junction of that top surface with the respective side surfaces 6 and 7.
  • Information about the configuration of the top surface 8. obtained as described hereinafter, is fed into a suitable computer 13, in the form of input signals that correspond to the distance between an arbitrarily chosen reference line and each of the edges 11 and 12.
  • the computer l3 can comprise known apparatus that utilizes such signals to make a calculation of the orientation of the cant and the spacing between the cutters 9 and ll) that will afford the economically optimum fin ishing cut or finishing cuts
  • the computer issues outputs that automatically effect the proper cant orienta tion and cutter spacing
  • the means for spacing the cutters 9 and in re sponse to computer outputs is not shown. ina much such apparatus is well known.
  • the means for orienting the cant comprises a pair of endless belts or bands 14 and 15. one under each end portion of the cant and extending transversely to the length of the cant. It will be understood that each of the endless belts or bands 14 and 15 is driven by a reversible servo tnot shown) that is controlled by outputs from the computer, and that proper coordination of the movements of the two bands effects the necessary edgewise rotation and/or translation of thc cant to pres ent it to the cutters 9 and 10 for the desired cut.
  • the cant can be advanced lengthwise into the area at which measurement takes place, and out of that area for cutting by the cutters, by means of a roller conveyor 16 that has its rollers extending transversely to the length of the cant and parallel to the length of the belts or bands 14 and 15.
  • the present invention contemplates that the workpiece shall be illuminated alternately from opposite sides thereof. with illumination from each side being at a low angle of incidence to the top surface.
  • illumination can be provided by means ot'two parallcl rows of lights 17 and 18 at laterally opposite sides of the workpiece. each row extending parallel to the top surface 8 of the cant and generally parallel to the longitudinal centerlinc thereof and being at a level a little above the top surface 8 of the workpiece.
  • a long. narrow scanning zone 20 is defined which has its length transverse to the longer dimension of the workpiece and which extends entirely across it.
  • a rela tive translation is effected between the strip-like scan ning zone and the workpiece, in a direction lengthwise of the workpiece and hence transversely to the scan ning zone, By such relative translation the scanning zone is caused to traverse the entire workpiece from one end of it to the other.
  • the workpiece is alternately illuminated first from one side and then from the other, as described above.
  • a scanning operation that takes place lengthwise along the scanning zone.
  • the scanning is cf fectcd with the use of a photo-responsivc detector or photo-electric cell 21, which produces an output signal that varies in correspondence with variations in the intensity of light reflected upwardly from the workpiece.
  • a photo-responsivc detector or photo-electric cell 21 which produces an output signal that varies in correspondence with variations in the intensity of light reflected upwardly from the workpiece.
  • scanning could always take place in one direction along the scanning zone. with illumination from alternate sides during successive scans. Similarly, the scanning zone could be steadily translated all during the scanning cycle, or. instead, could be advanced incrementally for each scanning cycle or for each phase of a scanning cycle. Thus any of a variety of scanning patterns could be employed. depending upon the accuracy of the desired calculations and the program for which the computer 13 was set up.
  • the apparatus for carrying out the above described process comprises. in addi tion to the lights 17 and 18, a mirror 22 that is mounted for rotation about a fixed axis that extends transversely to the length of the workpiece and parallel to its upper surface, and guided actuator means 23 by which the photocell 21 is carried for bodily back and forth scanning motion in directions parallel to the rotational axis of the mirror. Both the mirror and the photocell are mounted above the workpiece.
  • the mirror 22 is elongated in the direction of its axis, having a length great enough to span the widest expectable cant. It is mounted at a location spaced beyond one end of the cant, while the photocell 21 is spaced from the mirror in the direction toward the other end of the cant.
  • the photocell receives the light reflected from an incrementally small area of the top surface 8 of the cant, which light is re-reflected to the photocell from the mirror.
  • the strip-like scanning zone on the surface of the cam is defined by the mirror, as it reflects from the cant into the scanning path of the photocell; and it will also be apparent that rotation of the mirror about its axis has the effect oftranslating the scanning zone along the cant in accordance with the principles of this invention as explained above.
  • the mirror is mounted on a spindle or shaft 24 that has one of its ends connected to a pulse generator 25 and has its other end connected with a suitable rotation servo 26.
  • the servo causes the mirror to swing at a predetermined rate which effects translation of the scanning zone along the length of the cant, as explained above.
  • the pulse signal generator 25 emits a pulse signal that is fed to a synchronization element 27.
  • the synchronization element controls and coordinates the alternate operation of the lights 17 and 18 and scanning action of the photocell. as explained above.
  • the pulse signal is a function of the position of the scanning zone lengthwise along the cant, and denotes a reversal or other arbitrary point along the scanning path of the photocell
  • the pulse signals can be utilized by the computer 13 (to which the synchronizing element 27 is also connected) to define a coordinate axis to which can be related the edge location signals that are fed to the computer from the photocell.
  • the mirror could be held stationary and the conveyor rollers 16 could be driven, to effect lengthwise movement of the cam at a suitable rate.
  • the scanning along the scanning zone could be effected by means of various other known expedients functionally equivalent to bodily movement of the photocell.
  • F16. 2a illustrates an alternative method of coordinating illumination of the cant with translation of the scanning Zone lengthwise along the cant.
  • light sources 17' and 18' at opposite sides of the cant direct constant illumination towards it.
  • the cant is partially screened from the light sources at both sides of it by means of upwardly projecting fingerlike screening elements 29. 30 that are of uniform width as measured lengthwise of the cam.
  • the screening elements are spaced apart by distances equal to their width. and those at each side of the cant are in staggered relation to those at the other side thereof, rather than being directly opposite one another. In consequence of this staggered relationship of the screening elements, the scanning Zone, during its translation along the length of the cant, passes through successive areas in which the cant is alternately lighted from opposite sides.
  • Movement of the photocell can be so synchronized with translation of the scanning zone that the photocell moves in one direction in one such area and in the opposite direction in the next such area.
  • FIG. 2b illustrates another arrangement in which the cant is constantly illuminated from light sources at both sides of it.
  • color filters are used to produce the same effect as alternate illumination.
  • the light source 17" at one side of the cant can shine through a red filter, while the other light source 18" can be equipped with a blue filter.
  • red and blue filters are alternately arranged in the beam path between the cant and the photocell, according to the direction in which scanning is taking place.
  • the red filter will be in front of the photocell so that it will respond to the red light shadow that terminates at the edge 12 and will be non-responsive to the blue light falling on the side surface 7.
  • the blue filter will be in front of the photocell. so that it can produce a marked signal on crossing the edge 11.
  • this in vention provides a very simple and accurate method. capable of being practiced with inexpensive and compact apparatus, for obtaining signals that correspond to the locations of the longitudinal edges of one finished surface of a partly finished workpiece such as a cant, which signals can be fed to a computer that calculates the best orientation and spacing of cuts that will convert the workpiece to a finished one of optimum size with the minimum of waste.
  • the reflector means can reflect to the detector means, for scanning thereby, an image of a zone which extends entirely across a workpiece on the supporting means, and which zone moves lengthwise along the workpiece, from one end to the other thereof, as the reflector rotates;
  • F. means for rotating the reflector at a rate so related to the rate of repetitive scanning that the imaged zone ofthc workpiece that is scanned by the dctec tor means advances lengthwise along the workpiece from scan to scan;
  • G. means comprising at least a pair of light sources located at opposite sides of said supporting means for illuminating at least that zone of a workpiece which is imaged by the reflector means. at a low angle of incidence to the top surface of the work piece and alternately from opposite sides thereof in synchronism with scanning by the detector means, so that illumination does not extend beyond each of said edges of the workpiece when the scan reaches the vicinity thereof.

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  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Length Measuring Devices By Optical Means (AREA)
US445429A 1973-02-23 1974-02-25 Producing signals denoting location of edges of a finished surface on a partly finished workpiece Expired - Lifetime US3886372A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7302543A SE377610B (fi) 1973-02-23 1973-02-23

Publications (1)

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US3886372A true US3886372A (en) 1975-05-27

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US445429A Expired - Lifetime US3886372A (en) 1973-02-23 1974-02-25 Producing signals denoting location of edges of a finished surface on a partly finished workpiece

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US (1) US3886372A (fi)
CA (1) CA1011425A (fi)
FI (1) FI52251C (fi)
SE (1) SE377610B (fi)
SU (1) SU843784A3 (fi)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963938A (en) * 1974-04-22 1976-06-15 Saab-Scania Aktiebolag Apparatus for scanning cants to determine optimum edging cuts
US4123169A (en) * 1976-02-20 1978-10-31 A. Ahlstrom Osakeyhtio Device for measuring the width of timber
DE2837742A1 (de) * 1977-09-27 1979-04-05 Ahlstroem Oy Verfahren und vorrichtung zum besaeumen von brettern
US4179707A (en) * 1976-10-13 1979-12-18 Saab-Scania Aktiebolag Automatic measurement of lengths of elongated workpieces
EP0007079A1 (de) * 1978-07-10 1980-01-23 Saab-Scania Aktiebolag Verfahren und Vorrichtung zum Abtasten und Vermessen langgestreckter unregelmässiger Werkstücke wie Bretter
US4186310A (en) * 1978-06-19 1980-01-29 Maxey Carl W Automatic wane detector
US4196648A (en) * 1978-08-07 1980-04-08 Seneca Sawmill Company, Inc. Automatic sawmill apparatus
US4308461A (en) * 1977-10-20 1981-12-29 A. Ahlstrom Osakeyhtio Method and apparatus for measuring timber
FR2516433A1 (fr) * 1981-11-13 1983-05-20 Montornes Herve Installation pour le reperage des traits de coupe d'une piece de bois en vue de son delignage
DE3317342A1 (de) * 1983-05-11 1984-11-15 Maschinenfabrik Esterer AG, 8262 Altötting Verfahren zum vermessen der kanten eines holzes im laengstransport und vorrichtung hierfuer
EP0496968A1 (de) * 1991-01-30 1992-08-05 Rosenthal Aktiengesellschaft Verfahren und Vorrichtung zur Erzeugung einer Sollkontur an einem Werkstück
DE4126988A1 (de) * 1991-08-15 1993-02-18 Diehl Gmbh & Co Beleuchtungsanordnung zur optischen erfassung der kontur von langgegenstaenden mit diffus reflektierender oberflaeche
EP1215004A2 (de) * 2000-11-30 2002-06-19 MICROTEC S.r.l. Verfahren zum Überwachen und Steuern der Versetzung von Baumstämmen
US20030019545A1 (en) * 2001-07-24 2003-01-30 Woodford James D. Optimized board edger and method of operation thereof
US6610992B1 (en) * 2000-07-19 2003-08-26 Clasmet Rotating beam method and system for measuring part edges and openings
US6631006B2 (en) 2001-05-17 2003-10-07 Precision Automation, Inc. System and method of marking materials for automated processing
US20050098004A1 (en) * 2001-05-17 2005-05-12 Precision Automation, Inc. Systems and methods for automated material processing
US20060004478A1 (en) * 2004-05-26 2006-01-05 Dick Spencer B Material handling systems
US20060000326A1 (en) * 2004-05-26 2006-01-05 Dick Spencer B Material handling systems
US20060048853A1 (en) * 2004-09-09 2006-03-09 Murray Boyd System for positioning a workpiece
US20060207686A1 (en) * 2005-03-17 2006-09-21 U.S. Natural Resources, Inc. Log rotation and verification system and method
US20060225292A1 (en) * 2005-04-11 2006-10-12 Concept Systems, Inc. Lineal length measurement system for timber
US7171738B2 (en) 2003-10-09 2007-02-06 Precision Automation, Inc. Systems for processing workpieces
US20070028730A1 (en) * 2003-08-20 2007-02-08 Sawyer Philip P Apparatus and methods for double ended processing
US20070240547A1 (en) * 2004-10-12 2007-10-18 Dick Spencer B Multi-step systems for processing workpieces
US20080009961A1 (en) * 2006-02-24 2008-01-10 Dick Spencer B Gauge system
US7792602B2 (en) 2006-08-22 2010-09-07 Precision Automation, Inc. Material processing system and a material processing method including a saw station and an interface with touch screen
US8783140B2 (en) 2009-06-09 2014-07-22 Lean Tool Systems, Llc Gauge system for workpiece processing
US9943975B2 (en) 2012-02-01 2018-04-17 Precision Automation, Inc. Saw system for miter joints
US11597045B2 (en) 2019-08-12 2023-03-07 Precision Automation, Inc. Linear positioner

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE447303B (sv) * 1984-08-27 1986-11-03 Saab Wood Ab Forfarande och anleggning for uppmetning av virkesstycken, vilka bearbetas maskinellt

Citations (5)

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US3362284A (en) * 1962-06-06 1968-01-09 Mavilor Manufacture De Vilebre Dimensional measurement devices
US3384753A (en) * 1965-02-01 1968-05-21 Philco Ford Corp Photosensitive means for measuring a dimension of an object
US3541337A (en) * 1965-10-30 1970-11-17 Philips Corp Photoelectric width measures using pulse producing scanning members
US3655990A (en) * 1967-11-03 1972-04-11 Nordstjernan Rederi Ab Radiation sensitive length measuring system
US3665202A (en) * 1969-06-02 1972-05-23 British Steel Corp Apparatus for detecting objects

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3362284A (en) * 1962-06-06 1968-01-09 Mavilor Manufacture De Vilebre Dimensional measurement devices
US3384753A (en) * 1965-02-01 1968-05-21 Philco Ford Corp Photosensitive means for measuring a dimension of an object
US3541337A (en) * 1965-10-30 1970-11-17 Philips Corp Photoelectric width measures using pulse producing scanning members
US3655990A (en) * 1967-11-03 1972-04-11 Nordstjernan Rederi Ab Radiation sensitive length measuring system
US3665202A (en) * 1969-06-02 1972-05-23 British Steel Corp Apparatus for detecting objects

Cited By (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963938A (en) * 1974-04-22 1976-06-15 Saab-Scania Aktiebolag Apparatus for scanning cants to determine optimum edging cuts
US4123169A (en) * 1976-02-20 1978-10-31 A. Ahlstrom Osakeyhtio Device for measuring the width of timber
US4179707A (en) * 1976-10-13 1979-12-18 Saab-Scania Aktiebolag Automatic measurement of lengths of elongated workpieces
DE2837742A1 (de) * 1977-09-27 1979-04-05 Ahlstroem Oy Verfahren und vorrichtung zum besaeumen von brettern
US4308461A (en) * 1977-10-20 1981-12-29 A. Ahlstrom Osakeyhtio Method and apparatus for measuring timber
US4186310A (en) * 1978-06-19 1980-01-29 Maxey Carl W Automatic wane detector
EP0007079A1 (de) * 1978-07-10 1980-01-23 Saab-Scania Aktiebolag Verfahren und Vorrichtung zum Abtasten und Vermessen langgestreckter unregelmässiger Werkstücke wie Bretter
US4196648A (en) * 1978-08-07 1980-04-08 Seneca Sawmill Company, Inc. Automatic sawmill apparatus
FR2516433A1 (fr) * 1981-11-13 1983-05-20 Montornes Herve Installation pour le reperage des traits de coupe d'une piece de bois en vue de son delignage
DE3317342A1 (de) * 1983-05-11 1984-11-15 Maschinenfabrik Esterer AG, 8262 Altötting Verfahren zum vermessen der kanten eines holzes im laengstransport und vorrichtung hierfuer
FR2545924A1 (fr) * 1983-05-11 1984-11-16 Esterer Ag Maschf Procede et dispositif pour mesurer les bords d'une piece de bois pendant un transport longitudinal
AT391027B (de) * 1983-05-11 1990-08-10 Esterer Ag Maschf Verfahren zum vermessen der kanten eines holzes im laengstransport und vorrichtung hierfuer
EP0496968A1 (de) * 1991-01-30 1992-08-05 Rosenthal Aktiengesellschaft Verfahren und Vorrichtung zur Erzeugung einer Sollkontur an einem Werkstück
DE4126988A1 (de) * 1991-08-15 1993-02-18 Diehl Gmbh & Co Beleuchtungsanordnung zur optischen erfassung der kontur von langgegenstaenden mit diffus reflektierender oberflaeche
US6610992B1 (en) * 2000-07-19 2003-08-26 Clasmet Rotating beam method and system for measuring part edges and openings
EP1215004A2 (de) * 2000-11-30 2002-06-19 MICROTEC S.r.l. Verfahren zum Überwachen und Steuern der Versetzung von Baumstämmen
EP1215004A3 (de) * 2000-11-30 2004-01-07 MICROTEC S.r.l. Verfahren zum Überwachen und Steuern der Versetzung von Baumstämmen
US20050098004A1 (en) * 2001-05-17 2005-05-12 Precision Automation, Inc. Systems and methods for automated material processing
US6631006B2 (en) 2001-05-17 2003-10-07 Precision Automation, Inc. System and method of marking materials for automated processing
US7571751B2 (en) 2001-07-24 2009-08-11 U.S. Natural Resources, Inc. Optimized board edger and method of operation thereof
US20050109423A1 (en) * 2001-07-24 2005-05-26 Valley Machine Works Ltd. Optimized board edger and method of operation thereof
US6929043B2 (en) 2001-07-24 2005-08-16 Valley Machine Works Ltd. Optimized board edger and method of operation thereof
US20030019545A1 (en) * 2001-07-24 2003-01-30 Woodford James D. Optimized board edger and method of operation thereof
US7543615B2 (en) 2001-07-24 2009-06-09 U.S. Natural Resources, Inc. Optimized board edger and method of operation thereof
US7835808B2 (en) 2003-08-20 2010-11-16 Precision Automation, Inc. Method and apparatus for processing material
US20090100974A1 (en) * 2003-08-20 2009-04-23 Sawyer Philip P Method and apparatus for processing material
US20070028730A1 (en) * 2003-08-20 2007-02-08 Sawyer Philip P Apparatus and methods for double ended processing
US7171738B2 (en) 2003-10-09 2007-02-06 Precision Automation, Inc. Systems for processing workpieces
US7168353B2 (en) 2004-05-26 2007-01-30 Frecision Automation, Inc. Material handling systems
US7245981B2 (en) 2004-05-26 2007-07-17 Precision Automation, Inc. Material handling system with saw and wheel drag mechanism
US20060004478A1 (en) * 2004-05-26 2006-01-05 Dick Spencer B Material handling systems
US20060000326A1 (en) * 2004-05-26 2006-01-05 Dick Spencer B Material handling systems
US20060048853A1 (en) * 2004-09-09 2006-03-09 Murray Boyd System for positioning a workpiece
US7857021B2 (en) 2004-09-09 2010-12-28 Usnr/Kockums Cancar Company System for positioning a workpiece
US7966714B2 (en) 2004-10-12 2011-06-28 Precision Automation, Inc. Multi-step systems for processing workpieces
US20070240547A1 (en) * 2004-10-12 2007-10-18 Dick Spencer B Multi-step systems for processing workpieces
US8117732B2 (en) 2004-10-12 2012-02-21 Precision Automation, Inc. Multi-step systems for processing workpieces
US20090105871A1 (en) * 2004-10-12 2009-04-23 Precision Automation, Inc. Multi-step systems for processing workpieces
US20090105872A1 (en) * 2004-10-12 2009-04-23 Precision Automation, Inc. Multi-step system for processing workpieces
US20090103977A1 (en) * 2004-10-12 2009-04-23 Precision Automation, Inc. Multi-step systems for processing workpieces
WO2006101822A3 (en) * 2005-03-17 2009-04-23 Us Natural Resources Log rotation and verification system and method
US7849894B2 (en) 2005-03-17 2010-12-14 U.S. Natural Resources, Inc. Log rotation and verification system and method
US20060207686A1 (en) * 2005-03-17 2006-09-21 U.S. Natural Resources, Inc. Log rotation and verification system and method
US20060225292A1 (en) * 2005-04-11 2006-10-12 Concept Systems, Inc. Lineal length measurement system for timber
US20080009961A1 (en) * 2006-02-24 2008-01-10 Dick Spencer B Gauge system
US7483765B2 (en) 2006-02-24 2009-01-27 Precision Automation, Inc. Gauge system
US7792602B2 (en) 2006-08-22 2010-09-07 Precision Automation, Inc. Material processing system and a material processing method including a saw station and an interface with touch screen
US20090299519A1 (en) * 2007-02-26 2009-12-03 Precision Automation, Inc. Gauge system
US8783140B2 (en) 2009-06-09 2014-07-22 Lean Tool Systems, Llc Gauge system for workpiece processing
US9996072B2 (en) 2009-06-09 2018-06-12 Lean Tool Systems, Llc Gauge system for workpiece processing
US9943975B2 (en) 2012-02-01 2018-04-17 Precision Automation, Inc. Saw system for miter joints
US11597045B2 (en) 2019-08-12 2023-03-07 Precision Automation, Inc. Linear positioner

Also Published As

Publication number Publication date
FI52251B (fi) 1977-03-31
SU843784A3 (ru) 1981-06-30
FI52251C (fi) 1977-07-11
SE377610B (fi) 1975-07-14
CA1011425A (en) 1977-05-31

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