JP3193558U - Projected dimension measuring instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a projection dimension measuring instrument capable of significantly reducing man-hours in a dimension measurement and inspection process for an object to be measured such as a part. SOLUTION: This is a desktop type projection dimension measuring instrument, in which a measuring table 12 on which an object 15 to be measured is placed and rotatably provided about a rotation axis which is a vertical axis, and a drive for rotating the measuring table. The devices 13 and 14, the dimension measuring instruments 11a and 11b arranged so as to measure the dimensions by projecting at right angles to the rotation axis of the measuring table, and the electronic data measured by the dimension measuring instruments are taken in and managed. Equipped with a computer. By measuring while rotating the object to be measured, it is possible to quickly obtain measured values from multiple directions. [Selection diagram] Fig. 1

Description

  The present invention relates to a projected dimension measuring instrument used for dimension measurement and inspection.

  When measuring and inspecting dimensions, it is common to use a projection-type measuring instrument or a contact-type measuring instrument (such as calipers, micrometers, and lever-type dial gauges). In mass-produced products and the like, most of the products are extracted and inspected for size, and it is difficult to inspect all the products.

  For example, when measuring the diameter of a cylindrical measurement object, measurement only from one direction orthogonal to the axial center of the cylindrical measurement object is incomplete. This is because the cylinder section may be elliptical. In order to eliminate this, complicated operations such as measuring the outer shape in a plurality of angular directions orthogonal to the axis of the cylindrical measurement object and calculating the average of the measurement values were required. . In addition, when performing such measurements precisely, it is necessary to use a dedicated measuring instrument, but at that time, the center of the axis of the cylindrical measurement object must be precisely performed, and the work is complicated. become.

  Further, when measuring with a contact-type measuring device, a measurement error is caused by the measurer, and thus the measurement itself may be difficult unless the user is proficient in handling the measuring device to some extent. Further, when the measurer records the measurement value, the measurement value may be misread or copied.

  Projectors and conventional image size measuring instruments are known that place the object to be measured on a horizontal surface and measure from the top in the vertical direction. When measuring a cylindrical object, the object does not roll. It was necessary to prepare a jig to be fixed to. Also, in the case of a measurement object that is not cylindrical, for example, in the case of a rectangular parallelepiped measurement object, when the measurement object is in an unstable shape when placed on a horizontal surface, when a jig is required to stabilize the measurement object Therefore, it was necessary to prepare jigs according to the shape of the measurement object. Furthermore, when measuring the dimension of a long direction and a short direction, it was necessary to mount and measure the measurement object from the long direction to the short direction with respect to the horizontal plane.

  In addition, as an example of the dimension measuring instrument, a non-contact type outer shape measuring apparatus using a telecentric optical system, which can easily specify the measurement site of the measurement object has been devised. According to the non-contact type outer shape measuring apparatus, the collimator lens that makes the light from the light source substantially parallel light and the substantially parallel light including the shadow of the measuring object placed so as to block a part of the substantially parallel light are received. Measuring object by processing the electric signal obtained from the one-dimensional image sensor, the one-dimensional image sensor that receives the light receiving lens that receives the light passing through the diaphragm, the diaphragm arranged at the rear focal position of the light-receiving lens A signal processing unit for obtaining an outer dimension of the object and a display unit for displaying the obtained outer dimension are provided. Further, the light divided by the beam splitter disposed between the light receiving lens and the diaphragm is received by the two-dimensional image sensor through the second diaphragm, and the signal processing unit is a measurement object obtained by the two-dimensional image sensor. The monitor image including the measurement site is displayed on the display unit (see Patent Document 1).

JP 2002-1116013 A (first page)

  With respect to the dimension measuring device, conventionally, regardless of whether it is a projection type or a contact type, a cylindrical long object requires a centering operation of a shaft and a jig for fixing. In the rectangular parallelepiped shape and other shapes, there is a disadvantage that a jig for re-mounting the measurement object or fixing the measurement object is required to measure the dimensions in the long direction and the short direction. In addition, the measurement work requires proficiency, and there is a drawback that there is a possibility that the measured value is misread and copied when the measured value is recorded. In addition, as described above, the measurement has the drawbacks of centering the shaft, placing it, fixing it with a jig, and recording the measurement value, which increases the measurement time and limits the number of measurements. .

The present invention has the following configuration in order to solve the above problems.
According to one form of the projected dimension measuring instrument according to the present invention, it is a tabletop projected dimension measuring instrument that is mounted so that the object to be measured can be placed and rotated about the rotation axis that is the vertical axis. A table, a driving device for rotating the measuring table, a dimension measuring device arranged to measure a size by projecting at right angles to the rotation axis of the measuring table, and electronic data measured by the dimension measuring device And a computer that takes in and manages the device.

  According to one aspect of the projected dimension measuring instrument of the present invention, positioning can be performed on at least one side surface of the object to be measured on the upper surface of the measurement table on which the object to be measured is placed. A positioning portion may be provided.

  According to one form of the projected dimension measuring instrument concerning this invention, the said positioning part can be the protrusion part for positioning formed in the convex shape on the upper surface of the said measurement stand, It can be characterized by the above-mentioned.

  According to one aspect of the projected dimension measuring instrument of the present invention, the positioning projection is arranged in a direction intersecting the one surface portion for positioning that can contact a part of the side surface of the object to be measured and the one surface portion for positioning. It is characterized by being constituted by two parts including a positioning other surface part that can come into contact with another part of the side surface of the object to be measured.

  According to one form of the projected dimension measuring instrument concerning this invention, the said positioning part can be a bottomed hole part for positioning formed in the upper surface of the said measurement stand in concave shape.

  According to the projected dimension measuring instrument of the present invention, by using the projected dimension measuring instrument and enabling the measurement table on which the measurement object is placed to be rotated, the object to be measured can be placed from multiple directions with one placement. It enables measurement in a short time. That is, measurement values from multiple directions can be obtained quickly by performing measurement while rotating the measurement object using a projection type dimension measuring instrument that can measure without contact. In addition, since a highly accurate positioning is not required when placing a measurement object, it has a particularly advantageous effect that the number of measurement steps can be reduced.

  In addition, since the measured value can be taken in as electronic data, it is possible to eliminate the man-hours for copying the measured value or inputting it to a computer or the like, thereby preventing the possibility of misreading the measured value or copying it wrongly.

It is the perspective view and partial sectional view of the projected dimension measuring device which concern on this invention. (Example 2) which is a block diagram in the case of using the articulated robot of the projection dimension measuring device which concerns on this invention.

  Hereinafter, the example of the form of the projected dimension measuring device according to the present invention will be described in detail based on the attached drawings (FIGS. According to this projected dimension measuring instrument, a measuring instrument that can be easily replaced and that can perform high-precision measurement without using a precise measuring table has been realized.

  As shown in FIG. 1, the present embodiment is a desktop projection size measuring instrument 1 that is provided so as to be able to rotate around a rotation axis that is a vertical axis on which an object to be measured (measurement object 15) is placed. Measure the dimensions by projecting the measurement table 12 at right angles to the rotation axis of the measurement table 12, the driving device (rotation table 13, electric motor or working fluid rotation mechanism 14) that rotates the measurement table 12, and the measurement table 12. A dimension measuring instrument (projected dimension measuring instrument light projecting section 11a, projected dimension measuring instrument light receiving section 11b), and a computer that takes in and manages electronic data measured by the dimension measuring instruments 11a and 11b, and Is provided. Further, the measurement table 12 of this embodiment is provided so that the measurement object 15 is placed on the upper surface which is a horizontal plane, and the upper surface of the measurement table 12 is positioned by contacting at least one side surface of the measurement object 15. A positioning part is provided which can be performed.

  In the present invention, the measurement is performed by the projection size measuring device projector 11a and the projection size measuring device light receiver 11b. For example, when measuring the diameter of the cylindrical measuring object 15, the projection image data is processed by a computer. Since the measurement is performed using the position correction function and the posture correction function, the centering of the axis of the cylindrical measurement object is not necessary.

  Further, when the measurement object 15 has a rectangular parallelepiped shape, if the measurement object 15 is fixed to the measurement table 12 provided with a positioning unit capable of positioning by contacting either the long side portion or the short side portion with the measurement table 12, the other side This side can be measured by rotating the measuring table 12 by 90 degrees. Also in this case, since the projection image data is measured for the long side or the short side using the position correction function and the posture correction function through the calculation processing by the computer, the positioning accuracy of the measurement object 15 with respect to the measurement table 12 is high. There is no need.

  Therefore, there is no need for an axis alignment jig and a fixing jig for the measurement object 15, and measurement may be possible only by placing the measurement object 15 on the measurement table 12. Furthermore, in the projected dimension measuring instrument 1 according to the present invention, the projection type dimension measuring instrument light projecting unit 11a and the projected type dimension measuring instrument light receiving unit 11b, the casing 20 on which the measuring table 12 is placed, and the surface plate have sufficient rigidity. There is no need, and the measuring instrument can be manufactured at low cost.

  The positioning portion can be a positioning projection formed in a convex shape on the upper surface of the measuring table 12. This positioning protrusion functions not as a fixing device that chucks and fixes the measurement object 15 but as a base for placing the measurement object 15 in a predetermined position range on the measurement table 12. That is, the positioning protrusion does not require strict positional accuracy, and is provided so as to be a rough reference position for placing the measurement object without chucking. As described above, the measurement object 15 is placed on the upper surface of the measurement table 12, but since the projection data is processed by the computer, the dimension of the measurement object 15 can be measured with high accuracy.

  In addition, the positioning protrusions are arranged in a direction crossing the one surface portion for positioning that can contact a part of the side surface of the object to be measured (measurement object 15), and other than the side surface of the measurement object 15 It can be made the form comprised by two parts with the other surface part for positioning which can contact a part of. Furthermore, the two surfaces of the positioning one surface portion and the positioning other surface portion can be orthogonal surfaces, and can be constituted by, for example, a linear guide member made of two rod-shaped members having a rectangular cross section. . According to this, since there are two positioning surfaces, it is possible to position the measuring object 15 more easily and appropriately by bringing the measuring object 15 into contact with each other, thereby improving work efficiency.

  Further, the positioning part can be a bottomed hole part for positioning formed in a concave shape on the upper surface of the measuring table 12. This positioning projection is not a fixing device that chucks and fixes the measurement object 15, but functions as a base for placing the measurement object 15 in a predetermined position range on the measurement table 12. The same effect as the positioning projection is obtained.

  FIG. 1 is a perspective view showing a configuration of the entire measuring instrument of the present invention and a sectional view of a rotating part, and shows Example 1. FIG. According to the present embodiment, there is a housing 20 on which projection type dimension measuring devices 11a and 11b are installed. The casing 20 includes a rotation driving device 14, and a rotating table 13 is attached to the rotating shaft thereof, and a measuring table 12 is attached to the upper surface of the rotating table 13.

  The procedure at the time of the dimension measurement is set while installing the measurement object 15 on the measurement table 12 and confirming the image displayed on the monitor 21 using the console 22. The touch panel 19 is operated to register settings in the measuring instrument. Finally, the start button 16 is operated to confirm that measurement is performed. Even if the shape of the measurement object 15 changes, the above procedure can be performed and registered as another setting. Once registered, the setting according to the shape of the measurement object 15 is called by operating the touch panel 19, the measurement object 15 is placed on the measurement table 12, and the start button 16 is pressed to complete the measurement.

  In addition, by connecting the measuring instrument and a computer with a communication cable, it is possible to capture the numerical value obtained by the measurement into the computer.

  The measuring table 12 can be easily removed, and by preparing the measuring table 12 according to the shape of another object to be measured, the measuring table 12 can be immediately replaced, and a wide variety of measurements can be achieved. It can be done in time.

  Since there is nothing in the upper space of the measuring table 12, the replacement work of the measuring object 15 is easy, and it is possible to flexibly cope with the automation by the articulated robot 23 as shown in FIG.

  The present invention has been described in various ways with preferred embodiments. However, the present invention is not limited to these embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. That is.

DESCRIPTION OF SYMBOLS 1 Projection dimension measuring device 11a Projection type dimension measuring device Light projection part 11b Projection type dimension measurement device light-receiving part 12 Measurement stand 13 Turntable 14 Rotation drive device (Rotation mechanism by an electric motor or working fluid)
15 Measurement Object 16 Start Button 17 Stop Button 18 Main Power Button 19 Touch Panel 20 Case 21 Monitor 22 Console 23 Articulated Robot

Claims (5)

  A table-type projected dimension measuring device, which is a measuring table provided on which an object to be measured is mounted and is rotatable about a rotation axis that is a vertical axis, a driving device that rotates the measuring table, and the measurement A projection comprising: a dimension measuring device arranged to measure a size by projecting at right angles to a rotation axis of a table; and a computer that takes in and manages electronic data measured by the dimension measuring device. Dimension measuring instrument.   The positioning unit capable of positioning by contacting at least one side surface of the object to be measured is provided on the upper surface of the measurement table on which the object to be measured is placed. The projected dimension measuring instrument described.   The projected dimension measuring instrument according to claim 2, wherein the positioning part is a positioning projection formed in a convex shape on the upper surface of the measurement table.   The positioning protrusion is arranged in a direction crossing the one surface portion for positioning to contact a part of the side surface of the object to be measured, and contacts another part of the side surface of the object to be measured. 4. The projected dimension measuring instrument according to claim 3, wherein the projected dimension measuring instrument is provided with two parts including a positioning other surface part.   The projected dimension measuring instrument according to claim 2, wherein the positioning part is a bottomed hole part for positioning formed in a concave shape on the upper surface of the measurement table.