Patents by Inventor Bo Pettersson

Bo Pettersson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7895761
    Abstract: A measurement method and a measuring device for use in measurement systems such as co-ordinate measurement machines and similar, where a position sensor is arranged to register its position in order to determine the form and dimensions of an object. The position sensor is supported by a support, the position and orientation of which are determined through calculation with the aid of data from at least one of accelerometers, GPS receivers and gyroscopes, and based on a known starting position.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: March 1, 2011
    Assignee: Hexagon Metrology AB
    Inventor: Bo Pettersson
  • Publication number: 20110037989
    Abstract: A measurement arrangement with a measurement head (1) in order to carry out accurate measurements of objects that are to be subject to inspection measurement during, for example, a manufacturing process, whereby the measurement arrangement includes at least one mobile support and one measurement head (1) arranged at the end of the mobile support and including a measurement probe (2) that can be swivelled (B) and set at an angle (A) relative to the mobile support.
    Type: Application
    Filed: January 30, 2009
    Publication date: February 17, 2011
    Applicant: HEXAGON METROLOGY AB
    Inventor: Bo Pettersson
  • Publication number: 20100274390
    Abstract: The invention relates to a method and a system for the high-precision positioning of at least one object in a final location in space. An object (12) is gripped and held by the industrial robot (11) within a gripping tolerance. A compensating variable, which corrects the gripping tolerance, is determined for the industrial robot (11).
    Type: Application
    Filed: December 17, 2008
    Publication date: October 28, 2010
    Applicant: LEICA GEOSYSTEMS AG
    Inventors: Bernd Walser, Bernhard Metzler, Beat Aebischer, Knut Siercks, Bo Pettersson
  • Patent number: 7805851
    Abstract: The invention relates to a coordinate measuring machine (CMM) for determining a measuring position of a probe. The CMM comprises an articulated arm having first and second ends and at least one joint between the first and the second end, the first end forming a base being positionable on a supporting surface, the second end being movable relative to the first end and having attached the probe. Further exists at least one sensing unit for measurement of an actual relative setting of said at least one joint and at least one computing unit for calculating a measuring position of the probe relative to the base, as well as for referencing the measuring position in an external coordinate system by using a provided base-position in the external coordinate system.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: October 5, 2010
    Assignee: Leica Geosystems AG
    Inventor: Bo Pettersson
  • Patent number: 7779553
    Abstract: A method for scanning a surface of a workpiece using a scanning probe 2 mounted on a support 3 on a coordinate measuring machine 4. The support contains drive means 5, 7 for actuating the movement of the scanning probe 2 relatively to the support 3. The method further involves detecting means 9 to measure a contact force F applied between the tip 10 of the probe and the surface 1, control means 13 coupled to the drive means, and memory means 14 for storing theoretical profiles 19 and coordinates 20 of the surface. This method is characterized by the fact that the control means 13 adjust the actuation of the drive means 5, 7 along a scanning path 18 in order to maintain the contact force 11 within the defined range of values 15 during the whole scanning operation along the scanning path 18.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: August 24, 2010
    Assignee: Hexagon Metrology AB
    Inventors: Pascal Jordil, Bo Pettersson, Siercks Knut
  • Publication number: 20100208062
    Abstract: A method and a device for the accurate measurement of objects, where, according to the invention, a camera (4) is arranged on a manually operated portable jointed arm (1) in order to take two-dimensional images of the object that is to be measured and where the measurements are carried out based on the two-dimensional images taken with the camera (4) and based on the displacements that are carried out by the jointed arm (1) during the measurements.
    Type: Application
    Filed: April 2, 2008
    Publication date: August 19, 2010
    Applicant: HEXAGON METROLOGY AB
    Inventor: Bo Pettersson
  • Publication number: 20100078866
    Abstract: A method of measuring the forces that arise in a processing machine when processing is carried out and compensating geometrical errors caused by these forces, where a workpiece holder (10) is arranged to measure the forces and such that it can be adjusted based on measurement signals that have been received, by it being possible to turn the workpiece holder relative to a fixture (11) in the processing machine to which the workpiece holder is attached. An arrangement for the realization of the method, includes a workpiece holder (10) the angle of which can be adjusted relative to a fixture (11) in the processing machine to which the workpiece holder (10) is connected, and where the force measuring elements (13) are arranged to measure the forces that are exerted on the workpiece holder (10).
    Type: Application
    Filed: November 16, 2007
    Publication date: April 1, 2010
    Applicant: HEXAGON METROLOGY AB
    Inventor: Bo Pettersson
  • Patent number: 7676942
    Abstract: The positioning and measuring system includes a coordinate positioning machine comprising a movable spindle (60) movable relative to a reference surface 30, a rotor (100) rotatably connected with the movable spindle, an actuator (500) for driving the rotor (100) in rotation around a rotation axis (65), and a coordinate probe (150, 190) detachably connectable to the rotor (100) for measuring coordinate of points (350) of a workpiece (200, 201, 250) along a path resulting from the composition of a translation movement of the spindle (60) and a rotation of the rotor (100). The points (350) are offset (r) with respect to the rotation axis (65) of the rotor (100).
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: March 16, 2010
    Assignee: Hexagon Metrology AB
    Inventors: Pascal Jordil, Siercks Knut, Bo Pettersson, Klaus Schneider
  • Publication number: 20100042246
    Abstract: A method to compensate geometrical errors in processing machines, in which a workpiece holder (8) is arranged such that it can be adjusted on the basis of measurement signals that have been received by being able to be rotated relative to a fixture (9) in the processing machine to which the workpiece holder is attached. A method for the alignment of a workpiece in processing machines, and an arrangement for the realization of the method are disclosed. The arrangement includes a workpiece holder (8), the angle of which relative to a fixture (9) in the processing machine to which the workpiece holder (8) is connected can be adjusted.
    Type: Application
    Filed: November 16, 2007
    Publication date: February 18, 2010
    Applicant: HEXAGON METROLOGY AB
    Inventor: Bo Pettersson
  • Patent number: 7647706
    Abstract: A method for scanning a surface of a workpiece 1 at a constant scanning speed /va/ using a scanning probe 2 mounted on a support 3 on a coordinate measuring machine (CMM) 4. The CMM contains a first set of drive means (6, 7, 8) to move the support according to three linear axis (x,y,z), and the support 3 contains a second set of drive means (14, 17) for actuating the movement of the scanning probe 2 with two degrees of freedom relative to said support 3. The method involves control means 33 coupled to the sets of drive means (6, 14, 17), and memory means for storing theoretical profiles and coordinates of the surface to scan.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: January 19, 2010
    Assignee: Hexagon Metrology AB
    Inventors: Pascal Jordil, Siercks Knut, Bo Pettersson, William Wilcox
  • Patent number: 7627956
    Abstract: A measurement probe for use in coordinate measuring machines, which measurement probe includes a base (1) connected with a coordinate measuring machine, a measurement tip (4) and a ball (5) arranged at the first end of the measurement tip (4). The measurement tip (4) is supported at its other end with the aid of at least three rigid supports (2) supported by the base (1), whereby the supports (2) are connected with the measurement tip by way of spherical connections and where the supports (2) can be displaced along their longitudinal directions relative to the base (1).
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: December 8, 2009
    Assignee: Hexagon Metrology AB
    Inventor: Bo Pettersson
  • Publication number: 20090249634
    Abstract: The invention relates to a coordinate measuring machine (CMM) for determining a measuring position of a probe. The CMM comprises an articulated arm having first and second ends and at least one joint between the first and the second end, the first end forming a base being positionable on a supporting surface, the second end being movable relative to the first end and having attached the probe. Further exists at least one sensing unit for measurement of an actual relative setting of said at least one joint and at least one computing unit for calculating a measuring position of the probe relative to the base, as well as for referencing the measuring position in an external coordinate system by using a provided base-position in the external coordinate system.
    Type: Application
    Filed: April 2, 2009
    Publication date: October 8, 2009
    Applicant: Leica Geosystems AG
    Inventor: Bo PETTERSSON
  • Patent number: 7591077
    Abstract: A coordinate measuring machine to determine the coordinates of a number of points on the surface of a measured object, includes a support beam, supporting a measuring head over the surface of a support table that supports the test object. The measuring machine is constructed from separately manufactured units, which include at least a support beam, a measurement trolley and a measurement head. The support beam supports the measurement trolley, which is displaceable along the support beam. The measurement trolley in turn supports the measurement head. The beam, head and trolley are individually calibrated, and the trolley includes both mechanical and electrical attachment points for the head and the beam, where the mechanical attachment points are designed such that no geometric deformation can take place when these units are joined together such that the units, which have been individually manufactured, can be simply joined to the coordinate measuring machine.
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: September 22, 2009
    Assignee: Hexagon Metrology AB
    Inventor: Bo Pettersson
  • Patent number: 7513059
    Abstract: A co-ordinate measuring machine to determine the co-ordinates of a number of points on the surface of a measurement object, including a support beam (4) that supports a measurement head over the surface of a support table (1) that supports the measurement object, the co-ordinates of which are to be measured. The support beam (4) is supported above the support table (1) by two legs (7, 8) that are not only possible to displace together along the support table (1) in order to displace the support beam (4) and the measurement head forwards and backwards in a direction relative to the support table (1), but also it is possible to displace the legs (7, 8) relative to each other in different directions along the support table (1) in order to raise and lower the support beam (4) and the measurement head relative to the support table.
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: April 7, 2009
    Assignee: Hexagon Metrology AB
    Inventor: Bo Pettersson
  • Publication number: 20090082986
    Abstract: A modular calibration method for a CMM, comprising preliminary calibration steps of several components prior to its mounting. The preliminary calibration steps yield specific mapping information for each calibrated component, which are then stored into map files generated and associated to the calibrated components. A final alignment takes place after once the CMM is mounted, which processes mapping information gathered during the preliminary calibration steps.
    Type: Application
    Filed: September 9, 2008
    Publication date: March 26, 2009
    Applicant: Hexagon Metrology AB
    Inventor: Bo Pettersson
  • Patent number: 7503125
    Abstract: A measuring method and system involving a measuring coordinate probe, which can be moved precisely, by appropriate actuators, with respect to a positioning platform (60) on which the probe is mounted; and whose position relative capable to said positioning platform (60) can be measured, by suitable encoders (780). The invention can be carried out with probes, actuators and encoders of different nature. The actuators (730) preferably allow the motion of the probe according to two or more independent degrees of freedom, so that the probe itself can be moved in a plane, or in a three-dimensional region of space, and its orientation can be chosen, within some suitable limits. The method and system of the invention provide very exact local measurement, even if the platform (60) does not deliver the very best precision.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: March 17, 2009
    Assignee: Hexagon Metrology AB
    Inventors: Pascal Jordil, Bo Pettersson
  • Patent number: 7500319
    Abstract: A measurement probe for use in coordinate measuring machines, which probe comprises a base (1) connected to a coordinate measuring machine, a measurement tip (4) and a ball (5) arranged at the first end of the measurement tip (4). The measurement tip (4) is supported at its second end with the aid of at least three rigid supports (2) supported by the base (1), whereby the supports (2) are connected to the measurement tip by means of spherical connections and where the supports (2) can be displaced along their longitudinal directions relative to the base (1). The supports (2) are arranged such that they pass through the base (1), and can be displaced along their longitudinal directions by protruding to a greater or lesser degree on the side of the base (1) that is opposite relative to the measurement tip holder (3).
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: March 10, 2009
    Assignee: Hexagon Metrology AB
    Inventor: Bo Pettersson
  • Publication number: 20090046895
    Abstract: The invention relates to a method and a surveying system for noncontact coordinate measurement on the object surface (2) of an object (1) to be surveyed in an object coordinate system (O). With a 3D image recording unit (3), a first three-dimensional image (P1) of a first area section (S1) of the object surface (2) is electronically recorded in a first position (x1, y1, z1) and first orientation (?1, ?1, ?1), the first three-dimensional image (P1) being composed of a multiplicity of first pixels (i1), with which in each case a piece of depth information is coordinated. First 3D image coordinates (u1i, v1i, w1i) in an image coordinate system (B) of the 3D image recording unit (3) are coordinated with the first pixels (i1). The first position (x1, y1, z1) and first orientation (100 1, ?1, ?1) of the 3D image recording unit (3) in the object coordinate system (O) are determined by a measuring apparatus (4a, 4b) coupled to the object coordinate system (O).
    Type: Application
    Filed: August 10, 2007
    Publication date: February 19, 2009
    Applicant: LEICA GEOSYSTEMS AG
    Inventors: Bo PETTERSSON, Knut SIERCKS, Benedikt ZEBHAUSER
  • Publication number: 20080282564
    Abstract: A measurement probe for use in coordinate measuring machines, which measurement probe includes a base (1) connected with a coordinate measuring machine, a measurement tip (4) and a ball (5) arranged at the first end of the measurement tip (4). The measurement tip (4) is supported at its other end with the aid of at least three rigid supports (2) supported by the base (1), whereby the supports (2) are connected with the measurement tip by way of spherical connections and where the supports (2) can be displaced along their longitudinal directions relative to the base (1).
    Type: Application
    Filed: June 20, 2005
    Publication date: November 20, 2008
    Applicant: HEXAGON METROLOGY AB
    Inventor: Bo Pettersson
  • Publication number: 20080271332
    Abstract: A measuring method and system involving a measuring coordinate probe, which can be moved precisely, by appropriate actuators, with respect to a positioning platform (60) on which the probe is mounted; and whose position relative capable to said positioning platform (60) can be measured, by suitable encoders (780). The invention can be carried out with probes, actuators and encoders of different nature. The actuators (730) preferably allow the motion of the probe according to two or more independent degrees of freedom, so that the probe itself can be moved in a plane, or in a three-dimensional region of space, and its orientation can be chosen, within some suitable limits.
    Type: Application
    Filed: April 29, 2008
    Publication date: November 6, 2008
    Applicant: HEXAGON METROLOGY AB
    Inventors: Pascal Jordil, Bo Pettersson