WO1991008868A1 - Data conversion system of a measuring robot - Google Patents
Data conversion system of a measuring robot Download PDFInfo
- Publication number
- WO1991008868A1 WO1991008868A1 PCT/JP1990/001606 JP9001606W WO9108868A1 WO 1991008868 A1 WO1991008868 A1 WO 1991008868A1 JP 9001606 W JP9001606 W JP 9001606W WO 9108868 A1 WO9108868 A1 WO 9108868A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- measurement
- data
- coordinate system
- robot
- measuring
- 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.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Program-control systems
- G05B19/02—Program-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/33—Director till display
- G05B2219/33259—Conversion of measuring robot coordinates to workpiece coordinates
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/37—Measurements
- G05B2219/37193—Multicoordinate measuring system, machine, cmm
Definitions
- the present invention relates to a data conversion method for a measurement robot, and in particular, to a data conversion method for a measurement port that can easily obtain measurement data on a work coordinate system even when the measurement point is on an inclined surface on the work coordinate system.
- a data conversion method for a measurement port that can easily obtain measurement data on a work coordinate system even when the measurement point is on an inclined surface on the work coordinate system.
- Robots are widely used for welding in automobile manufacturing lines, but are also being used for other types of measurement.
- a measuring sensor bot is equipped with a measuring sensor on the wrist of the robot. The wrist is positioned on the measuring point, and the position of the measuring point is measured from the measurement data.
- a system using these robots is called a measurement robot.
- the measurement data can be used as it is in the work coordinate system.
- the tool coordinate system is not parallel to the work coordinate system because the robot's wrist is perpendicular to this inclined plane, and the measurement data is not measured.
- the target could not be used as data in the peak coordinate system.
- the present invention has been made in view of such a point, and a measurement port box that can easily obtain measurement data on a work coordinate system even when a measurement point is on an inclined surface on a work coordinate system.
- the purpose of the present invention is to provide a data conversion method of the -In order to solve the above-mentioned problems, the present invention provides a method of measuring a measurement point by controlling a mouth bot having a measurement sensor attached to a wrist, and converting the measurement data into data in a work coordinate system.
- angle data of a tip coordinate system fixed to the wrist at the measurement point with respect to a peak coordinate system is input to a measurement control computer and read from the sensor.
- a data conversion method for a measurement robot which is characterized in that the measurement data is converted into data in a work coordinate system by the angle data.
- the surface inclined to the workpiece coordinate system is measured as a measurement point.
- the robot's wrist is positioned perpendicular to this inclined plane for measurement.
- the inclination of the wrist that is, the angle of the inclination of the tool coordinate system with respect to the workpiece coordinate system is input to the measurement control computer.
- the measurement control computer reads the measurement data at this angle. —Converts measurement data in the work coordinate system to data in the work coordinate system. This makes it easy to obtain measurement data on the workpiece coordinate system even on a surface inclined on the workpiece coordinate system.
- FIG. 1 is a conceptual diagram of a data conversion method of a measuring port bot according to the present invention.
- FIG. 2 is a configuration diagram in a case of measuring an automobile body according to an embodiment of the present invention.
- Fig. 3 (a) is a front view of the measuring sensor
- Fig. 3 (b) is a side view of Fig. 3 (a)
- FIG. 4 is a flowchart of the processing of the data conversion method of the measurement robot according to the present invention.
- FIG. 1 is a conceptual diagram of a data conversion method for a measurement port bot according to the present invention.
- the mouth bot control device 10 positions the wrist 41 vertically with respect to the measurement point P1 of the object 5 to be measured.
- a measurement sensor 40, etc. is fixed to the tip of the wrist 41.
- the position of the measuring point P 1 is measured by the measuring sensor 40. Generally, the difference between the originally accurate point and the actual machined point is measured.
- These measurement data (Xt, Yt, Zt) are read by the visual controller 20 and sent to the measurement control computer 30.
- the robot controller 10 sends the tilt data of the wrist, that is, the angle data ( ⁇ ⁇ , ⁇ y, ⁇ ) of the tool coordinate system 9 to the measurement control computer 30.
- the measurement control computer 30 generates a coordinate conversion matrix 32 from the angle data, converts the measurement data 33 with this coordinate conversion matrix, and converts the data 3 on the work coordinate system 8 Convert to 1 ⁇
- the angle data is described as being sent from the robot controller to the measurement control computer 30; however, the operator reads the angle data from the teaching operation panel, which will be described later, and reads the angle data from the measurement control computer. You can also enter 30.
- FIG. 2 is a configuration diagram when measuring the body of an automobile according to one embodiment of the present invention.
- the robot 1 is a ⁇ -bot for measurement, and can move left and right on the gantry 2 on the platform 3.
- the body 4, 5, 6 of the car is moved to the right for each measurement. Note that the bodies of bodies 4, 5, and 6 are omitted.
- the camera 43 and the like are fixed to the wrist 41 of the robot 1, and details thereof will be described later.
- the mouth bot 1 is controlled by a mouth bot controller 10, and the mouth bot controller 10 has data on the position and angle of the wrist in memory. This data is sent to the measurement control computer 30.
- the robot control unit 10 is equipped with a teaching operation panel 11, and the operator reads the wrist angle data as necessary and inputs it to the measurement control computer 30. You can also.
- the visual control device 20 receives the position signal of the two-dimensional measurement point from the visual image of the camera 43 and calculates the two-dimensional position.
- the position on the XY plane of the tool coordinate system is obtained.
- the position in the Z direction of the tool coordinate system is measured by a laser length measuring device (not shown), and the measured data is sent directly to the measurement control computer 30.
- the monitor device 21 for monitoring the measurement point is connected to the visual control device 20.
- the measurement control computer 30 converts the angle data from the robot control device 10 and the measurement data from the visual control device 20 and the like into data of the work coordinate system, and stores the internal data. Store in memory. These data are used for quality control etc. as measurement data.
- Fig. 3 (a) is a front view of the measurement sensor
- Fig. 3 (b) is a side view of Fig. 3 (a).
- a force camera 43 and a lens 45 are provided on a wrist 41 of the robot via members 42 and 44.
- the camera 43 reads the image of the measurement point, and measures the position on the XY plane of the tool coordinate system.
- a laser length measuring device 47 is fixed to the member 44 via a member 46, and the position of the tool coordinate system in the Z-axis direction is measured.
- FIG. 4 is a flowchart of the processing of the data conversion method of the measurement bot according to the present invention.
- the numeral following S indicates the step number.
- [S1] Match the sensor coordinate system in the robot controller 10 with the tool coordinate system.
- the work coordinate system is set in the mouth-bot control device 10.
- [S3] Position the robot 1 at the measurement point.
- the angle data of the tool coordinate system is sent from the mouth pot control device 10 to the measurement control computer 30. If necessary, the operator can read the angle data from the teaching operation panel 11 and input it to the measurement control computer 30.
- the visual control device 20 converts the measurement signal from the measurement sensor into digital data, and sends the measurement data in the tool coordinate system to the measurement control computer 30.
- the distance signal in the Z-axis direction from the laser length measuring device 47 is directly sent to the measurement control computer 30.
- the measurement control computer 30 converts the measurement data into data in the work coordinate system using the angle data. This data is stored in the memory and can be printed out from the measurement control computer 30 as necessary and used as quality control data.
- the measurement data in the tool coordinate system is converted by the angle data in the tool coordinate system, so that it is possible to easily measure even an inclined surface in the work coordinate system as in the past. .
Landscapes
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Numerical Control (AREA)
- Manipulator (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1/322111 | 1989-12-12 | ||
| JP32211189A JPH03184785A (ja) | 1989-12-12 | 1989-12-12 | 計測ロボットのデータ変換方式 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1991008868A1 true WO1991008868A1 (en) | 1991-06-27 |
Family
ID=18140040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1990/001606 Ceased WO1991008868A1 (en) | 1989-12-12 | 1990-12-07 | Data conversion system of a measuring robot |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0457914A1 (ja) |
| JP (1) | JPH03184785A (ja) |
| CA (1) | CA2046271A1 (ja) |
| WO (1) | WO1991008868A1 (ja) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3215086B2 (ja) * | 1998-07-09 | 2001-10-02 | ファナック株式会社 | ロボット制御装置 |
| US7555404B2 (en) * | 2007-08-09 | 2009-06-30 | The Boeing Company | Methods and systems for automated ply boundary and orientation inspection |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60262216A (ja) * | 1984-06-08 | 1985-12-25 | Hitachi Ltd | ロボツト用計測方式 |
| JPS60263681A (ja) * | 1984-06-08 | 1985-12-27 | 株式会社日立製作所 | ロボツトの教示方法 |
-
1989
- 1989-12-12 JP JP32211189A patent/JPH03184785A/ja active Pending
-
1990
- 1990-12-07 WO PCT/JP1990/001606 patent/WO1991008868A1/ja not_active Ceased
- 1990-12-07 EP EP19910900048 patent/EP0457914A1/en not_active Withdrawn
- 1990-12-07 CA CA 2046271 patent/CA2046271A1/en not_active Abandoned
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60262216A (ja) * | 1984-06-08 | 1985-12-25 | Hitachi Ltd | ロボツト用計測方式 |
| JPS60263681A (ja) * | 1984-06-08 | 1985-12-27 | 株式会社日立製作所 | ロボツトの教示方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03184785A (ja) | 1991-08-12 |
| EP0457914A1 (en) | 1991-11-27 |
| CA2046271A1 (en) | 1991-06-13 |
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