JPH048725B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an automatic measuring device for automatically measuring the dimensional accuracy of various types of workpieces.

2. Description of the Related Art An automobile body is made up of many types of body parts, and one body is constructed by combining these many types of body parts.

By the way, like the car body mentioned above,
When constructing a single product by combining workpieces that are parts, the workpieces are manufactured in separate processes and assembled in an assembly process. Therefore, it is necessary to check whether the dimensions of each part of each workpiece are within preset numerical values upon completion of manufacture, so that various assembly operations can be carried out smoothly during the assembly process. For this reason, the dimensions of each workpiece are measured using a measuring device using a gauge.

The measuring device used for the above purpose consists of a surface plate with a flat surface and various gauges installed on the surface plate. Then, the workpiece is placed on this measuring device, and the dimensions of the workpiece are measured by, for example, measuring the gap created between the workpiece and the gauge.

Problems to be Solved by the Invention When measuring dimensions using the above-mentioned measuring device, it becomes necessary to prepare a measuring device corresponding to each workpiece, and at the same time, a large number of measuring devices are required. There was a problem in that it was necessary to secure space for the measuring device.

Means for solving the problem The automatic measuring device is configured to have a surface plate having a flat surface that serves as a reference for measurement, and to stably support various workpieces to be measured on the surface plate. Several types of positioning jigs placed on a jig stand installed on the side, a moving rail that is constructed across the surface of the surface plate and moves in the X-axis direction on the surface plate, and a movable base that moves in the Y-axis direction; a rotating arm that is rotatably supported on the movable base and has a chuck that clamps the positioning jig; It is constructed using a robot or three-dimensional measuring machine that has a measurement sensor that measures the dimensions of the supported workpiece.

Effect By configuring the automatic measuring device as described above, when measuring the dimensions of a workpiece, a positioning jig corresponding to the workpiece to be measured is placed at a predetermined position on the surface plate,
Further, the dimensions of the workpiece stably supported on the surface plate by the positioning jig are measured by a robot or a three-dimensional measuring machine.

Embodiment The drawing shows an automatic measuring device according to the present invention, and in the drawing, 1 indicates a surface plate having a flat surface serving as a reference for measurement, 2 indicates a movable rail installed across the surface of the surface plate 1, and 3 is a drive device for sliding the moving rail 2 in the X-axis direction (arrow direction in the figure);
A scraper 4 is attached to the moving rail 2 and is used to clean the surface of the surface plate 1. 5 is a movable base that moves in the Y-axis direction (in the direction of the arrow in the figure) on the movable rail 2; 6 is a swing arm that is rotatably supported on the movable base 5; and 7 is attached to the tip of the swing arm 6, which will be described later. This is a chuck for holding the positioning jig 8. 8 is a positioning jig placed at a predetermined position on the surface plate 1 in order to stably support the workpiece A to be measured on the surface plate 1, and 9 is a positioning jig 8 arranged in an aligned state. To keep it, place plate 1
The positioning jig 8 is a jig stand installed on the side, and several types of positioning jigs 8 are prepared corresponding to various types of workpieces A to be measured by the apparatus of the present invention. or,
A magnetic chuck is built into the bottom of the positioning jig 8 to prevent horizontal movement when the positioning jig 8 is installed on the surface plate 1.
Note that when a suction mechanism for suctioning the positioning jig 8 is provided on the surface plate 1 side, the bottom surface of the positioning jig 8 is simply made of an iron face plate. 10 is the reference block 8 above.
This is a robot installed on the side of the surface plate 1 in order to measure the dimensions of the workpiece A that is stably supported on the surface plate 1.
A measurement sensor 12 for measuring a workpiece is attached to the tip of the sensor 1. 13 is a data processing device for processing measurement data from the measurement sensor 12 and controlling the robot 10; 14 is a control panel for controlling the above-mentioned moving rail 2, moving platform 5, and rotating arm 6. .

Data regarding the installation position on the surface plate 1 of the positioning jig 8 corresponding to the workpiece A to be measured is input to the control panel 14 of the automatic measuring device having the above configuration. The data processing device 10 also stores the ideal state of the workpiece A, assuming that the workpiece A supported in a stable state on the surface plate 1 by the positioning jig 8 is finished according to the design value. Data obtained by measuring with the above-mentioned measurement sensor 12 is inputted in advance. In addition, all the data for the workpiece A mentioned above that corresponds to the various workpieces A to be measured by the automatic measuring device are entered, and at the same time, the data for the positioning jig 8 corresponding to each workpiece A is also input. Enter it.

In the above configuration, in order to measure the dimensions of the workpiece A using the automatic measuring device according to the present invention, the data processing device 13 and the control panel 14 are connected to the workpiece A to be measured.
Enter the type. Then, first, the movable rail 2 installed on the surface plate 1 reciprocates on the surface plate 1, and the surface plate 1 is cleaned by the scraper 4 attached to the movable rail 2. Next, with the data entered in advance,
Among the plurality of positioning jigs 8 placed on the jig table 9, the positioning jig 8 corresponding to the workpiece A to be measured is selected. After the selected positioning jig 8 is clamped by the chuck 7 of the rotating arm 6 as shown by the dashed line in the figure, the moving rail 2 and the movable table 5 are moved, and the positioning jig held by the chuck 7 is clamped. The tool 8 is transported to a preset position on the surface plate 1, and the positioning jig 8 is installed at that position. When the predetermined number of positioning jigs 8 have been installed on the surface plate 1 in this way, the operator uses the positioning jigs 8 to place the workpiece A to be measured on the surface plate 1 in a stable state. After placing it on
The data processing device 13 is instructed to start measurement. Then, the robot 10 moves the workpiece A on the surface plate 1 using the measurement sensor 12 attached to the tip of the arm 11.
The dimensions of the workpiece are measured, and the measured values are compared with the dimensions of the ideal workpiece that have been previously input into the data processing device 13. The measurement results are output from the data processing device 13 to the outside, and the measurement operation is performed. finish.
After the measurement is completed as described above and the worker removes the workpiece A from the surface plate 1, when the operator instructs the control panel 14 to return, the moving rail 2, the moving table 5, and the swing arm 6 are activated, and the The positioning jig 8 on the board 1 is aligned to the original position on the jig stand 9, and the state before the start of measurement is returned.

In the above embodiment, the robot 10 and the measurement sensor 12 are used to measure the dimensions of the workpiece A, but a coordinate measuring machine other than the one described above may be used to measure the workpiece A.

Effects of the Invention As described above, when measuring the dimensions of a work, the automatic measuring device according to the present invention installs a positioning jig corresponding to the work to be measured at a predetermined position on the surface plate, and
Since the dimension measurement of the workpiece stably supported on the surface plate by the above-mentioned positioning jig is performed by a robot or a coordinate measuring machine, the data necessary for measuring the workpiece is sent to the automatic measuring device. You can measure the dimensions of a workpiece just by inputting the information, and you can measure the dimensions of many different types of workpieces with one automatic measuring device, while at the same time reducing the space required for measurement.

[Brief explanation of drawings]

The drawing is a perspective view showing an automatic measuring device according to the present invention. 1...Surface plate, 2...Moving rail, 5...Moving table, 6...Swivel arm, 7...Chuck, 8...
Positioning jig, 9...Jig stand, 10...Robot, 12...Measurement sensor.

Claims (1)

[Claims] 1. A surface plate having a flat surface that serves as a reference for measurement, and a jig stand configured to stably support various workpieces to be measured on the surface plate, and placed on a jig stand installed on the side of the surface plate. several types of positioning jigs, and a moving rail that is installed across the surface of the surface plate and moves on the surface plate in the X-axis direction.
a movable base that moves in the Y-axis direction on the movable rail; a rotating arm that is rotatably supported on the movable base and has a chuck that clamps the positioning jig; An automatic measuring device comprising a robot or a three-dimensional measuring machine having a measuring sensor for measuring the dimensions of a workpiece supported on a board.