JP2007333457A - Inspection method and inspection system for tire mold side plate, decision method and decision system for the tire mold side plate, and inspection method and inspection system for tire mold processing process - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To evaluate the accuracy of the shape of a mold side plate for tire molding with high inspection accuracy, without having to rely on visual inspection, and to perform inspection on it with less time and labor. <P>SOLUTION: The three-dimensional shape of a side plate manufactured on the basis of design data is measured; measured data, indicating the three-dimensional shape of the manufactured side plate, is acquired; and by comparing the shape indicated by the measured data with the shape indicated by the design data, the amount of deviation of the shape indicated by the measured data from the shape indicated by the design data which indicates the shape accuracy of the manufactured side plate is derived. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method and apparatus for inspecting the shape accuracy of a tire mold side plate, which is produced based on the three-dimensional shape design data of a rotating body-shaped side plate that defines the sidewall surface shape of a tire. The present invention also relates to a method and apparatus for measuring the three-dimensional shape of a side plate arranged in a vulcanizer and determining the type of a tire mold side plate arranged in the vulcanizer. Further, the present invention relates to a method and an apparatus for evaluating processing accuracy in a processing process of a material metal body for producing a rotating body-shaped tire mold side plate for determining a side plate surface shape of a tire.

  A partial mold is generally used for a tire vulcanization mold. For example, a rotator-shaped side plate that determines the sidewall surface shape of a tire and a plurality of tire tread portion segment molds that determine the surface shape of the tread portion of the tire are combined and arranged for tire vulcanization. The entire mold is constructed.

  In order to produce a highly accurate tire with a relatively small amount of deviation from the tire design data representing the shape of the tire to be produced, it is necessary that the shape accuracy of the tire vulcanization mold be high. Not too long. That is, the tire mold side plate is produced based on the three-dimensional shape design data of the rotating body-shaped side plate that defines the sidewall surface shape of the tire. The amount of deviation between the shape to be represented and the actual three-dimensional shape of the tire mold side plate produced based on this three-dimensional shape design data is as small as possible (the shape accuracy of the tire mold side plate is as high as possible) Is preferred.

  Conventionally, in order to fabricate a tire with high shape accuracy, various inspections have been performed on the tire mold side plate prior to performing the tire vulcanization molding process. For example, for a tire mold side plate placed in a vulcanizer, it is determined whether the type of the tire mold side plate arranged is the correct type of side plate corresponding to the tire to be manufactured. ing. In addition, it is possible to inspect whether there is a large deviation between the shape of the tire mold side plate arranged and the shape of the tire to be manufactured (that is, the shape represented by the three-dimensional shape design data of the side plate). It is done.

  Conventionally, such determination is performed by the operator visually recognizing the surface shape of the side plate placed in the vulcanizer, and based on the operator's own sense, the roundness of the side plate representing the shape of the rotating body is determined. The shape represented by the three-dimensional design data of the side plate to be determined or placed on the vulcanizer, and the three-dimensional shape of the side plate actually placed on the vulcanizer (the shape confirmed by visual recognition) This is done by determining the amount of deviation.

  In general, tire sidewalls are provided with identification codes for identifying tires to be manufactured, such as tire product manufacturers, product names, size indications, production codes, and markings based on various safety standards and regulations. Various characters, symbols, figures, patterns, and the like that are represented are engraved. The side plate for producing the sidewall of the tire is provided with an uneven shape corresponding to these identification codes. The operator visually inspects the concavo-convex shape according to such an identification code provided on the surface of the side plate, and also performs an inspection for determining the type of the side plate placed in the vulcanizer.

  As described above, the side plate inspection performed prior to the vulcanization process is performed by determining the type of the side plate based on the uneven shape according to the identification code, determining the roundness of the side plate representing the shape of the rotating body, It covers a wide range such as the determination of the three-dimensional shape accuracy of the side plate arranged in the sulfur machine. It is difficult to perform all of these determinations by visual inspection based on the operator's feeling, and the inspection requires a great deal of time and labor. Moreover, in such a visual inspection performed based on the operator's sense, there are also problems that an actual inspection point is limited and there is a limit to the shape inspection accuracy, so that an inspection error is likely to occur.

As a method for inspecting a tire surface identification code instead of visual observation, a method of reading character information formed on the tire surface using a device that identifies and reads characters representing the uneven shape provided on the tire surface is, for example, the following patent Documents 1 and 2 describe.
JP 7-152860 A JP-A-10-115508

  In the methods described in Patent Documents 1 and 2, the character information represented by the uneven shape provided on the actual tire surface is only read as two-dimensional image information. In the above Patent Documents 1 and 2, there is no suggestion about a method for evaluating the shape accuracy of the side plate arranged in the vulcanizer or a method for judging the type of the side plate arranged in the vulcanizer. It has not been. If the readers described in Patent Documents 1 and 2 are used, the content of the character information represented by the concavo-convex shape corresponding to the identification code provided on the surface of the side plate placed in the vulcanizer is read. May be able to. However, even if the methods described in Patent Documents 1 and 2 are used, the roundness of the side plate representing the shape of the rotating body is determined, and the shape accuracy of the three-dimensional shape of the side plate disposed in the vulcanizer is evaluated. I can't do it.

  The present invention relates to a tire molding die side plate, a tire die that evaluates the accuracy of the shape with high inspection accuracy without relying on visual inspection, and inspects the side plate with less time and effort. An object of the present invention is to provide a side plate inspection method and apparatus. The present invention also provides a method for determining the type of a tire mold side plate that determines the type of a tire mold side plate disposed in a vulcanizer with high inspection accuracy and less time and effort without relying on visual inspection. The purpose is to do. The present invention also provides a method for inspecting the processing accuracy in the processing step of the material metal body for producing the tire mold side plate with high inspection accuracy and less time and effort without relying on visual observation. Objective.

  In order to solve the above-mentioned problems, the present invention inspects the shape accuracy of a tire mold side plate produced based on the three-dimensional shape design data of a rotating body-shaped side plate that determines the sidewall surface shape of a tire. A method of measuring a three-dimensional shape of the side plate produced based on the design data and obtaining measurement data representing the three-dimensional shape of the produced side plate; Deriving the amount of deviation from the shape represented by the design data of the shape represented by the measurement data, which represents the shape accuracy of the produced side plate by comparing the shape represented by the shape represented by the design data; A method for inspecting a tire mold side plate is provided.

  Further, prior to the step of deriving the deviation amount, the measurement data reference point in the measurement data and the design in the design data respectively corresponding to the reference point on the surface of the side plate determined according to the shape of the side plate And a step of setting each of the data reference points, and in the step of deriving the deviation amount, the measurement data reference point and the design data reference point are made to coincide with each other so that the measurement data and the design data are in the same coordinates. It is preferable that the amount of deviation is derived by expressing it on a space.

  In addition, it is preferable that the reference point of the side plate surface determined according to the shape of the side plate is a point corresponding to the edge portion of the uneven portion of the side plate surface.

  Moreover, it is preferable that the said uneven | corrugated | grooved part is a part corresponding to the identification pattern which characterizes the tire produced using the said side plate.

  In the setting step, the shape represented by the measurement data and the shape represented by the design data are respectively displayed on a display screen, and according to an input instruction from an operator based on each shape displayed on the display screen, It is preferable to set the measurement data reference point and the design data reference point, respectively.

  Further, the reference point of the side plate surface determined according to the shape of the side plate is a point on the axis corresponding to the rotation center axis of a tire manufactured using the side plate, and in the setting step, It is also preferable to set the measurement data reference point corresponding to the reference point on the side plate surface according to the shape represented by the measurement data.

  At this time, in the setting step, using the partial measurement data representing the shape corresponding to any one of the outer circumference, the inner circumference, or the circular pattern forming the contour of the side plate of the rotating body in the measurement data, The center position of an approximate circle that approximates the shape represented by the partial measurement data is preferably set as the measurement data reference point.

  In the step of acquiring the measurement data, it is preferable to measure the three-dimensional shape of the side plate using a three-dimensional scanner.

  In the step of deriving the deviation amount, it is preferable that a deviation amount from the design data is derived for each of the plurality of measurement points of the measurement data, and the deviation amount is derived for each of the plurality of measurement points. .

  Further, for each of a plurality of measurement points of the measurement data, the deviation amount derived in the deriving step is compared with a predetermined reference tolerance, and whether or not the deviation amount is larger than the reference tolerance. Is preferably determined for each of a plurality of measurement points of the measurement data.

  And a display output step of displaying on the display screen at least one of the shape represented by the measurement data and the shape represented by the three-dimensional design data in a display form according to the determination result in the determining step. In the display output step, it is preferable that, in the determination step, the measurement points for which the deviation amount is determined to be larger than the reference tolerance are displayed in a display form different from other measurement points.

  Furthermore, it is preferable to have a step of marking on the surface of the side plate at a position corresponding to the measurement point at which the deviation amount is determined to be larger than the reference tolerance in the determination step.

  The present invention is also a method for determining the type of a tire mold side plate arranged in a vulcanizer, and measuring the three-dimensional shape of the side plate arranged in the vulcanizer, A step of obtaining measurement data representing a three-dimensional shape of the side plate disposed on the surface, and a three-dimensional shape of the rotating body-shaped side plate for defining a sidewall surface shape of a tire to be produced using the vulcanizer Obtaining design data; comparing the shape represented by the measurement data with the shape represented by the design data; and deriving a deviation amount of the shape represented by the measurement data from the shape represented by the design data; Based on the amount of deviation, the side plate arranged in the vulcanizer has a three-dimensional shape corresponding to the shape of the sidewall surface of the tire to be produced using the vulcanizer. And whether the determining whether the de plate, a tire mold side plate type determination method characterized by having the same time provides.

  Prior to the step of deriving the deviation amount, the measurement in the measurement data respectively corresponding to the reference point of the side plate surface determined according to the sidewall surface shape of the tire to be manufactured using the vulcanizer. And a step of setting each of the data reference point and the design data reference point in the design data. In the step of deriving the deviation amount, the measurement data reference point and the design data reference point are made to coincide with each other. It is preferable that the measurement data and the design data are represented on the same coordinate space to derive the deviation amount.

  The present invention is also a method for evaluating processing accuracy in a processing step of a metal material for producing a rotating tire-shaped tire mold side plate that defines the shape of a side plate surface of a tire, Measuring the three-dimensional shape of the material metal body in the middle to obtain measurement data representing the three-dimensional shape of the processed part of the material metal body; and representing the shape represented by the measurement data and the design data And a step of deriving an amount of deviation of the shape represented by the measurement data from the shape represented by the design data, which represents the machining accuracy in the machining process of the material metal body by comparing with the shape. An inspection method for the mold processing process is also provided.

Further, prior to the step of deriving the amount of deviation, each of the reference points of the three-dimensional shape of the processed portion of the material metal body is determined according to the three-dimensional shape of the processed portion of the material metal body. A step of setting a measurement data reference point in the measurement data and a design data reference point in the design data,
In the step of deriving the deviation amount, it is preferable that the measurement data reference point and the design data reference point are matched to represent the measurement data and the design data on the same coordinate space, and the deviation amount is derived. .

  The present invention is also an apparatus for inspecting the shape accuracy of a tire mold side plate, which is produced based on the three-dimensional shape design data of a rotating body-shaped side plate that determines the sidewall surface shape of the tire, Means for measuring the three-dimensional shape of the side plate produced based on design data and obtaining measurement data representing the three-dimensional shape of the produced side plate, the shape represented by the measurement data, and the design data And a means for deriving an amount of deviation of the shape represented by the measurement data from the shape represented by the design data, which represents the shape accuracy of the manufactured side plate. A tire mold side plate inspection device is also provided.

  Further, means for setting a measurement data reference point in the measurement data and a design data reference point in the design data respectively corresponding to a reference point on the surface of the side plate determined according to the shape of the side plate. And the means for deriving the deviation amount matches the measurement data reference point and the design data reference point set by the setting means so that the measurement data and the design data are in the same coordinate space. It is preferable to derive the deviation amount.

  The present invention is also an apparatus for determining the type of a tire mold side plate arranged in a vulcanizer, and measures the three-dimensional shape of the side plate arranged in the vulcanizer, Means for obtaining measurement data representing the three-dimensional shape of the side plate disposed on the surface, and the three-dimensional shape of the side plate of the rotating body defining the sidewall surface shape of the tire to be produced using the vulcanizer Means for obtaining design data; means for comparing the shape represented by the measurement data with the shape represented by the design data; and deriving a deviation amount of the shape represented by the measurement data from the shape represented by the design data; Based on the amount of deviation, the side plate arranged in the vulcanizer has a three-dimensional shape corresponding to the sidewall surface shape of the tire to be produced using the vulcanizer. It means for determining whether the tire mold side plate type determination apparatus characterized by having, together offer.

  The present invention also relates to a material metal body processing step performed on the basis of the three-dimensional shape design data of the side plate for producing a rotating body-shaped tire mold side plate that defines the side plate surface shape of the tire. An apparatus for evaluating processing accuracy, the means for measuring the three-dimensional shape of the material metal body during the processing step, and obtaining measurement data representing the three-dimensional shape of the processed portion of the material metal body And the shape represented by the measurement data and the shape represented by the design data, and the amount of deviation from the shape represented by the design data of the shape represented by the measurement data representing the processing accuracy in the processing step of the material metal body And an inspection device for a tire mold processing step, characterized by having a means for deriving.

  According to the present invention, the accuracy of the shape can be evaluated with high inspection accuracy without relying on visual observation, and the side plate can be inspected with less time and effort. The present invention can also determine the type of the tire mold side plate disposed in the vulcanizer with high inspection accuracy and less time and effort without relying on visual inspection. The present invention can also inspect the processing accuracy in the processing step of the material metal body for producing the tire mold side plate with high inspection accuracy and less time and effort without relying on visual inspection. By using the present invention, it is possible to contribute to the production of a highly accurate side plate, and thus to the manufacture of a highly accurate tire.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a tire mold side plate inspection method of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic diagram showing a tire mold side plate inspection apparatus according to the present invention.
The inspection apparatus 10 includes a mounting table 12 for mounting the side plate 30, a three-dimensional scanner 18 for measuring the three-dimensional shape of the side plate 30 mounted on the mounting table 12, and the mounting table 12. A rotating unit 16 and a computer 20 connected to the three-dimensional scanner 18 are provided. The computer 20 is connected to an input means 22 such as a keyboard and a mouse for receiving various input instructions from an operator, and a display 24 for displaying various calculation results by the computer 20.

  The mounting table 12 has a disk shape having a mounting portion 15 formed of a circumferential groove into which the annular side plate 30 is fitted, and a rotating means 16 is provided opposite to the mounting portion 15 of the mounting table 12. . The rotation unit 16 is connected to an operation control unit 43 (to be described later) of the computer 20 and is controlled to rotate by a control signal output from the operation control unit 43.

  The three-dimensional scanner 18 is supported by the fixed base 19, and measures the three-dimensional shape of the side plate 30 disposed on the mounting portion 15 of the mounting base 12 over a range corresponding to a predetermined measurable space. This is an apparatus for acquiring 30 three-dimensional point sequence coordinate measurement data (hereinafter referred to as three-dimensional measurement data). In the three-dimensional scanner 18, the arrangement position and the arrangement angle are adjusted so that a part of the side plate 30 enters the measurable space range in a state where the side plate 30 is placed on the placement unit 15.

  The rotation means 16 is rotationally controlled by a control signal output from the operation control unit 43, whereby different regions of the side plate 30 are sequentially arranged in the measurable space range of the three-dimensional scanner 18. The three-dimensional scanner 18 measures (scans) the entire three-dimensional shape of the side plate 30 by sequentially measuring the three-dimensional shape of the different regions of the side plate 30 that are sequentially arranged in this manner. Measurement data representing the entire 30 surface shapes is acquired. When the measurable space range of the three-dimensional scanner 18 is sufficiently large, the side plate 30 is placed on the mounting portion 15 so that the entire side plate 30 can enter the measurement space, that is, the side plate. The arrangement position and the arrangement angle may be adjusted so that the entire 30 is within the measurable range.

  FIG. 2 is a schematic configuration diagram of the computer 20. The computer 20 includes a memory 40 and a CPU 41, and is a known computer in which the processing means 42 and the operation control unit 43 operate when the CPU 41 executes a program stored in the memory 40. The operation control unit 43 is connected to the three-dimensional scanner 18 and the mounting table rotating means 16, and transmits a control signal to each of the three-dimensional scanner 18 and the mounting table rotating means 16 to control each operation. The processing means 42 is a part that acquires the three-dimensional measurement data measured by the three-dimensional scanner 18 and compares the three-dimensional measurement data with the three-dimensional shape design data stored in the memory 40. And a comparison unit 46.

  The three-dimensional shape design data is three-dimensional shape design data of a rotating body-shaped side plate that determines the sidewall surface shape of the tire. For example, it is three-dimensional drawing CAD / CAM point sequence coordinate data representing the shape of minute parts such as characters, symbols, figures, and patterns formed on the side plate, and the profile shape of the entire side plate. Such a three-dimensional shape design data (design data) is stored in the memory 40 in advance.

  FIG. 3 is a block diagram illustrating an example of the three-dimensional scanner 18. The three-dimensional shape scanner 18 includes a CPU 47, a driver circuit 48, a laser diode 49, a galvanometer mirror 50, optical systems 51 and 52, a CCD element 53, an AD converter 54, a FIFO 55, a signal processor 56, and a frame memory 57.

  In the three-dimensional scanner 18, the CPU 47 generates a trigger signal for starting measurement in response to a measurement start instruction from the computer 20, and activates a clock generator (not shown) to generate a clock signal. This clock signal is supplied to the CCD element 53, AD converter 54, FIFO 55, and signal processor 56. On the other hand, by generating the trigger signal, the driver circuit 48 generates a laser light irradiation signal and supplies it to the laser diode 49. The laser diode 49 irradiates the laser beam by this, turns the laser beam into slit light, shakes the galvano mirror 50 that starts driving in accordance with the irradiation signal of the laser beam, and is irradiated through the optical system 51. A slit-shaped laser beam is scanned on the side plate 30.

  On the other hand, reflected light of the laser beam focused through the optical system 52 is received by the CCD element 53, the generated image signal is converted into a digital signal by the AD converter 54, and the image signal is sequentially processed through the FIFO 55. This is supplied to the processor 56. The signal processor 56 incorporates a circuit that executes a known algorithm using a light cutting method, and is a part that generates three-dimensional measurement data of the side plate 30 from the supplied image signal.

  The three-dimensional measurement data is sequentially written in the frame memory 57 and is called up as necessary. A processing method for generating three-dimensional measurement data from an image signal is an algorithm using a well-known light cutting method. The light cutting method is a method of irradiating a measuring object with slit light, photographing a band-like reflected light of the measuring object with a camera such as a CCD element, and obtaining three-dimensional shape data from an imaging position in the image. . The calculation at this time is performed based on the principle of triangulation. The generated three-dimensional measurement data is supplied to the computer 20.

  Next, a first embodiment of the tire mold side plate inspection method of the present invention will be described with reference to the flowcharts of FIGS. In the first embodiment of the present invention, the shape accuracy of a tire mold side plate produced based on the three-dimensional shape design data of a rotating body-shaped side plate that defines the sidewall surface shape of a tire is inspected.

  First, the side plate 30 to be inspected is set on the mounting portion 15 of the mounting table 12 (step S101). The side plate 30 is produced based on the three-dimensional shape design data of the side plate, and the three-dimensional shape design data (design data) of the side plate is stored in the memory 40 in advance.

  Then, using the scanner 18, the three-dimensional shape of the side plate 30 set on the placement unit 15 is measured, and three-dimensional shape measurement data is acquired (step S102). At this time, as described above, the rotation unit 16 controls the rotation of the mounting table 12 according to the control signal output from the operation control unit 43, and the scanner 18 changes the three-dimensional shapes of the different surface regions of the side plate 30. By sequentially measuring, the data acquisition unit 44 acquires the three-dimensional shape measurement data (measurement data) of the entire side plate 30.

  When the rotation of the mounting table 12 is finished and the position is fixed, the comparison calculation unit 46 has a shape represented by the measurement data acquired by the data acquisition unit 44, a shape represented by the design data stored in the memory 40, and Are compared (step S103). In this step S103, the measurement data reference point in the measurement data of the side plate 30 and the design data reference point in the design data of the side plate 30 respectively corresponding to the reference point on the side plate surface determined according to the shape of the side plate 30. The measurement data reference point and the design data reference point are made to coincide with each other, the measurement data and the design data are represented on the same coordinate space, and the shape accuracy of the side plate 30 is represented. The amount of deviation from the shape represented by the design data is derived.

First, the first embodiment of the comparison determination performed in step S103 will be described. FIGS. 5A and 5B are diagrams illustrating the first embodiment of the comparison determination performed in step S103, and are schematic perspective views illustrating the shape represented by the design data and the shape represented by the measurement data. In the first embodiment, a point corresponding to the edge portion of the uneven portion on the surface of the side plate 30 is set as a reference point in the side plate 30. And the design data reference point (white circle in FIG. 5) corresponding to this reference point in the side plate design data D (actually coordinate data, but shown in the figure for the sake of clarity, the same applies hereinafter) and, corresponding to the reference point, it sets the measurement data reference point in the measurement data D ₃ of the side plate (colored circles in Figure 5). The uneven portion on the surface of the side plate 30 is a character corresponding to a chamfered portion 60 formed on the circumferential pattern on the side plate 30 or an identification pattern characterizing a tire manufactured using the side plate 30. Any sharp edge portion of the concavo-convex portion representing a symbol, a figure, a pattern, or the like may be used. In the present embodiment, at least three overlapping reference points are set in the edge portion of the uneven portion on the surface of the side plate 30 as described above. Then, the design data reference point in the side plate design data D and the measurement data reference point in the side plate measurement data D ₃ corresponding to the three overlapping reference points are set and stored in the memory 40. Keep it.

  In the example of FIG. 5A, the overlapping reference point 1 is an edge portion of a pattern representing the rotation direction of the tire to be manufactured, and the overlapping reference points 2 and 3 are Roman edge portions. In the present embodiment, an acute-angled edge portion having an uneven shape representing an identification code such as an arbitrary character, symbol, figure, or pattern can be selected as a reference point. Further, the number of reference points to be set is not particularly limited. FIG. 5B shows a measurement data reference point and a design data reference point that correspond to the edge portion of the chamfered portion 60 formed on the circumferential pattern among the uneven portions on the surface of the side plate 30. , Each shows a set state. As described above, the edge portion of the uneven portion on the surface of the side plate 30 is used as a reference point. The edge portion has a clear outline, and the reference point on the side plate surface determined according to the shape of the side plate is highly accurate. This is because the corresponding measurement data reference point in the measurement data and design data reference point in the design data can be easily set.

  The reference point is selected by, for example, displaying the shape represented by the measurement data and the shape represented by the design data on the screen of the display 24, and input means while viewing each shape displayed on the display screen. The measurement data reference point and the design data reference point may be set in accordance with the input instruction information from the operator, which is performed using the control unit 22. Specifically, when the operator selects a predetermined position on the screen of the display 24, the three-dimensional coordinate data of the predetermined position in the shape represented by the measurement data or the shape represented by the design data displayed on the display The measurement data reference point and the design data reference point may be set by a so-called GUI (Graphical user interface). Alternatively, the operator directly inputs the three-dimensional coordinates of the measurement data reference point in the measurement data and the three-dimensional coordinates of the design data reference point in the design data, so that the measurement data reference point and the design data reference point are It may be set.

  Then, the comparison calculation unit 46 matches the measurement data reference point and the design data reference point, represents the measurement data and the design data on the same coordinate space, and represents the shape accuracy of the produced side plate 30. A deviation amount of the shape represented by the measurement data from the shape represented by the design data is derived for each measurement point in the measurement data.

  For example, the comparison calculation unit 46 compares the derived deviation amount with a predetermined reference tolerance based on such deviation amount information, and determines whether or not the deviation amount is larger than the reference tolerance. Each of the plurality of measurement points of the measurement data is determined. Thereby, it is possible to determine whether the profile, characters, symbols, figures, patterns, and the like of the side plate 30 are accurately processed based on the design data. For example, as shown in FIG. 5B, whether or not the shape of the chamfered portion 60 formed on the circumferential pattern in the measurement data exactly matches the shape in the three-dimensional shape design data D is determined. Can be determined.

  Then, the deviation amount thus derived and the determination result are displayed and output on the display 24 (step S104). As a comparison result, for each measurement point in the measurement data, an absolute value of the deviation amount with respect to the design data may be output for each measurement point. Also, for each measurement point, the absolute value of the deviation amount with respect to the design data is compared with a predetermined design tolerance value, and the design is performed only for the measurement point where the absolute value of the deviation amount is larger than this design tolerance value. A message indicating that the deviation amount is larger than the tolerance value may be displayed. Further, for example, as shown in FIG. 6, a three-dimensional model corresponding to the measurement data is displayed on the display 24, and the measurement points whose deviation amount is larger than a predetermined design tolerance value are indicated by, for example, the x mark shown in FIG. Like the points marked with, it may be expressed in a color or form different from that of other measurement points, and a portion where the amount of deviation is larger than the design tolerance value may be visually shown to an observer viewing the display. In addition, for example, by using marking means (not shown) that ejects ink droplets to mark a predetermined position, it corresponds to a measurement point whose actual side plate 30 has a deviation amount larger than a predetermined design tolerance value. Marking may be applied to the portion to be performed.

  Next, a second embodiment of comparison determination in the comparison calculation unit 46 will be described. FIG. 7 is a diagram illustrating an inspection method according to the second embodiment of comparison determination in the comparison calculation unit 46. In 2nd Embodiment, the point on the axis line corresponding to the rotation center axis | shaft of the tire produced using a side plate is set as a reference | standard point of the side plate surface determined according to the shape of a side plate. Thereby, in 2nd Embodiment, the outer periphery, inner periphery, or circumferential pattern shape (for example, a bellows process vertex line) which makes the outline of a side plate correctly represents the three-dimensional shape of the side plate which should be produced. In accordance with the design data, it is determined over the entire circumference whether or not the uniform circle has been faithfully processed. In the second embodiment, the circle center A ′ necessary for this is obtained using the least square method based on the measurement data as follows.

これら頂点ラインは、測定データに基づいて、比較演算部４６が白動的に選択してもよく、ディスプレイの表示画面に基づいて、オペレータが入力指示することで選択してもよい。 In the second embodiment, partial measurement data representing the shapes of the outer circumference, the inner circumference, and the circular pattern that form the outline of the rotating body-shaped side plate in the measurement data is used, and the shapes represented by these partial measurement data are used. The approximate partial shape approximate circle is derived. Then, the center position of each of the partial shape approximate circles is obtained, and the barycentric position of the center positions of the plurality of partial shape approximate circles is set as a measurement data reference point. In the second embodiment, partial measurement data (xi, yi) (i = 1, 2,) representing the shapes of the outer periphery 62, inner periphery 63, and bellows processing apex line 64 of the side plate 30 shown in FIG. ..) Are respectively regressed to an expression representing the circumference, x ² + y ² = ay + bx + c, thereby deriving partial shape approximate circles approximated by the partial measurement data representing the respective partial shapes (coefficients a and b). And a constant term c). Then, the center position (x ₀ , y ₀ ) and the radius r of each partial shape approximate circle are obtained using the following formulas (1) and (2), and the center of gravity position of the center position of each partial shape approximate circle Is the virtual circle center A ′, and this virtual circle center A ′ is set as the measurement data reference point.

These vertex lines may be selected dynamically by the comparison calculation unit 46 based on the measurement data, or may be selected by an operator instructing input based on the display screen of the display.

  The circle center A ′ is the measurement data reference point, the circle center A of the three-dimensional shape design data is the design data reference point, the measurement data reference point and the design data reference point are matched, and the shape represented by the measurement data The amount of deviation from the shape represented by the design data is derived. Here, the circle center A of the design data corresponds to the center position of each of the circular shapes represented by the outer periphery, the inner periphery, or the circular pattern shape forming the outline of the rotating body-shaped side plate in the design data. The design data represents the shape of the tire to be manufactured, and the shape of the outer periphery, the inner periphery, or the circular pattern represented by the design data is a perfect circle. The center positions of the outer circumference, the inner circumference, or the circular shape represented by the circular pattern represented by the design data all coincide. In the second embodiment, such a circle center position A of the three-dimensional shape design data is set as a design data reference point.

  In the second embodiment, each of the measurement data and the design data corresponding to the outer periphery, the inner periphery, or the circumferential pattern shape forming the contour of the side plate is made by matching the measurement data reference point with the design data reference point. By comparing the shapes to be represented, the error (deviation amount) of the shape represented by the measurement data with respect to the shape represented by the design data, that is, the roundness is obtained.

  FIG. 8 shows an example in which the circumferential line design data 64a in the design data and the circumferential line measurement data 64b in the measurement data corresponding to the circumferential pattern line 64 which is a so-called bellows processing apex line of the side plate 30 are compared. It is. In the second embodiment, for example, the roundness may be determined based on the amplitude H of the circumferential line measurement data 64b. At this time, if absolute value T ≦ tolerance of error from perfect circle is satisfied, it is acceptable to pass, and if this is not satisfied, it is acceptable to reject. In the second embodiment, in step S104, the amplitude H of the circumferential line measurement data 64b, the absolute value T of the error from the perfect circle T ≦ tolerance, the pass / fail information for each measurement point, etc. May be displayed on the display 24. As in the first embodiment, for example, a three-dimensional model corresponding to the mold member measurement data is displayed on the display, and other measurement points are measured for measurement points whose deviation is larger than a predetermined design tolerance value. In other words, a portion having a larger deviation than the design tolerance value may be visually shown to an observer viewing the display. In addition, using marking means (not shown), marking may be performed on a portion of the actual side plate 30 corresponding to a measurement point whose deviation amount is more than a predetermined design tolerance value.

  FIG. 9 is a flowchart of the first aspect of the present invention, and shows a case where the comparison method of the first and second embodiments is continuously performed. In the example shown in FIG. 9, first, the comparison determination of the first embodiment is performed, and then the comparison determination of the second embodiment is continuously performed. First, reference points 1, 2, 3,... On the surface of the side plate 30 determined according to the shape of the side plate 30 are set (step S201). And the design data of the side plate 30 memorize | stored in the memory 40 is read, and the setting data reference point in the design data corresponding to the reference points 1, 2, 3,... S202). Further, the reference points 1, 2, 3,... On the surface of the side plate 30 in the measurement data of the side plate 30 acquired by the measurement data acquisition step using the three-dimensional scanner 18 not explicitly shown in FIG. A measurement data reference point corresponding to is also set (step S203).

  Next, the measurement data reference point and the design data reference point set in steps S202 and S203 are overlaid, and the shape represented by the measurement data is compared with the shape represented by the design data (step S204). Then, it is determined whether or not the shape represented by the measurement data matches the shape represented by the design data (whether or not the deviation amount is within the specified intersection) (step S205). If they do not match, the measurement shape of the side plate 30 does not match the design data (for example, by issuing a warning sound from an alarm device (not shown) or displaying a warning on the display 24). ) Is notified to the operator (step S206). At this time (in step S206), as described above, the three-dimensional model corresponding to the measurement data is displayed on the display, and other measurement is performed on the measurement point whose deviation is larger than the predetermined design tolerance value. It is preferable to visually represent a portion where the amount of deviation is larger than the design tolerance value for an observer who views the display by expressing it in a color different from the point. In addition, it is also preferable to mark a portion of the actual side plate 30 corresponding to a measurement point whose deviation amount is larger than a predetermined design tolerance value by using marking means (not shown).

  If it is determined in step S205 that the shape represented by the measurement data matches the shape represented by the design data (within the specified intersection), the process further proceeds to step S207, and the second embodiment is performed. A corresponding comparison is also performed.

In step S207, the expression x ² + y representing the circumference using the least square method for each of the point sequences of the three-dimensional measurement data (partial shape measurement data) of the outer circumference, the inner circumference, and the circumferential pattern forming the contour of the side plate. ² = Regress to ay + bx + c. Thereby, an approximate circle is obtained for each partial shape measurement data (coefficients a and b and a constant term c are obtained), and a circle center position of each approximate circle is obtained (step S207). When the least square method is used, the converged approximate circle and the center position of the circle are always derived. However, when selecting the point sequence of the three-dimensional measurement data corresponding to the pattern forming the circle, the circle is greatly increased from the actual circle. For example, when a deviated point sequence is selected, the derived circle center position is greatly different from the actual circle center position (that is, the position corresponding to the original tire center position). In the example shown in FIG. 9, it is determined whether or not the derived circle center position is within a predetermined range that should be originally (step S208), and when it is not within the predetermined range (step S208). If the determination in S208 is No), the process of step S207 is repeated until the derived circle center position is located within a predetermined range.

  When the derived circle center position is within a predetermined range that should be originally present (when the determination in step S208 is Yes), the center of gravity position of each of the partial shape approximate circles is determined as the virtual circle center A ′. The virtual circle center A ′ is set as a measurement data reference point (step S209). Then, the design data of the side plate 30 stored in the memory 40 is read out, the circle center position A in the design data of the side plate 30 is derived, and this circle center position A is set as the design data reference point (step S210). ).

  Then, the measurement data reference point (virtual circle center A ′) set in step S209 and the design data reference point (circle center position A) set in step S210 are overlapped and matched (step S211). The shape represented and the shape represented by the design data are compared and referenced. Thereby, the shape represented by the three-dimensional measurement data corresponding to the outer circumference, inner circumference, or circumferential pattern shape that forms the contour of the side plate is compared with the shape represented by the three-dimensional shape design data. The roundness (error) of each of the outer circumference, inner circumference, or circumferential pattern shape to be represented is calculated (step S212). At this time (in step S212), as described above, the three-dimensional model corresponding to the measurement data is displayed on the display, and the measurement point whose deviation amount is larger than the predetermined design tolerance value is compared with other measurement points. It is preferable to visually represent a portion where the amount of deviation is larger than the design tolerance value for an observer who views the display by expressing it in different colors. In addition, it is also preferable that marking is performed on a portion of the actual side plate 30 corresponding to a measurement point whose deviation amount is larger than a predetermined design tolerance value by using marking means (not shown).

  FIG. 10 is a diagram for explaining a second mode of the tire mold side plate inspection method of the present invention, which is performed using the tire mold side plate inspection apparatus 10 (mold inspection apparatus 10). 1 is a schematic configuration diagram of a mold inspection apparatus 10. FIG. FIG. 10 shows the mounting table 12, the three-dimensional scanner 18, and the three-dimensional scanner 18 of the mold inspection apparatus 10. In addition, the mold inspection apparatus 10 includes the above-described computer 20 connected to the input unit 22 and the display 24. FIG. 11 is a flowchart of a second aspect of the tire mold side plate inspection method of the present invention. In the second aspect of the present invention, the type of the tire mold side plate disposed in the vulcanizer is determined. That is, in the second aspect of the present invention, a difference in the incorporation of the side plate incorporated in the tire vulcanizer or a deviation from the set position is discovered.

  In FIG. 10, 70 and 71 are tire vulcanizers provided at the top and bottom, and the side plate 30 is incorporated in each. The three-dimensional scanner 18 can move along a rail 72 provided on the circumference, and is attached so as to be able to be reversed upward and downward.

Hereinafter, the tire mold side plate type determination method performed using the mold inspection apparatus 10 will be described with reference to the flowchart shown in FIG.
When the three-dimensional scanner 18 rotates along the rail 72 and inspection in the tire vulcanizing process starts, for example, the operator uses the input means 22 to identify the tire identification number (sector NO. Article NO. Etc.) is input (step S301). Then, while rotating the three-dimensional scanner 18, the three-dimensional shape of the entire side plate 30, that is, the shape of a profile, characters, symbols, figures, patterns, and the like is measured, and measurement data of the side plate 30 is acquired.

  When the measurement data of the side plate 30 is acquired, the measurement data measured by the three-dimensional scanner 18, the tire manufacturing specification data TD and the side plate three-dimensional shape design data D stored in advance in the memory 40 of the computer 20. Are compared and collated (step S302). Here, the tire manufacturing specification data is information on detailed conditions of a tire vulcanization process performed using a vulcanizer. The tire manufacturing specification data includes information indicating the type of side plate that should be originally used in the vulcanization process. The comparison unit 46 compares the tire manufacturing specification data TD, the side plate three-dimensional shape design data D, and the acquired measurement data of the side plate 30 to compare the tire metal disposed in the vulcanizer. It is determined whether or not the type of the mold side plate matches the type of the tire mold side plate specified in the tire manufacturing specification data (step S303), and if it does not match, a warning sound or warning is displayed. (Step S304) If they match, the process proceeds to Step S305. If they match, the vulcanization process continues. Then, when the “open” flag is set in the tire vulcanizer and the next side plate 30 is incorporated, the process proceeds to step S301, and the inspection is repeated with the same operation. The comparison and collation in the second mode (step S302) and the determination of whether or not they match (step S303) may be performed in the same manner as the comparison step and the determination step in the first mode described above.

  In the details of each step of comparison and collation (step S302) and determination of whether or not they match (step S303) in the second mode, for example, character information (character information representing the uneven shape on the side plate surface) is obtained from measurement data. ) Is read (performs image processing for character recognition) and collated with the character information data in the production specification data, the type of tire mold side plate placed in the vulcanizer is specified in the tire production specification data. It may be determined whether or not the type of the tire mold side plate is the same. Alternatively, three-dimensional shape data representing character information in the manufacturing specification data is created, and the shape represented by the three-dimensional shape character data and the shape represented by the character information data (uneven shape data on the side plate surface) in the measurement data To determine whether the type of the tire mold side plate arranged in the vulcanizer matches the type of the tire mold side plate specified in the tire manufacturing specification data. Good.

  In general, in tire manufacture, even if the tire size and the tire tread pattern are the same, the side plate may differ depending on the destination, and in this case, a side plate error is likely to occur in the tire vulcanization process. In this embodiment, all information such as profiles, characters, symbols, figures, patterns, and the like measured by the three-dimensional scanner 18 are compared with the tire manufacturing specification data and the side plate three-dimensional shape design data, so that the side It is possible to prevent plate mounting mistakes. At the same time, it is possible to find a deviation from a set position of the tire vulcanizer, and to find a damage to the side plate or a foreign matter on the side plate that occurs during the tire vulcanization.

  FIG. 12 is a diagram for explaining a third aspect of the tire mold side plate inspection method of the present invention, which is performed using the mold inspection apparatus 10, and is a schematic configuration diagram of the mold inspection apparatus 10. . FIG. 12 shows the mounting table 12, the three-dimensional scanner 18, the three-dimensional scanner 18, the metal working machine 80 described later, and the high-pressure air source 81 of the mold inspection apparatus 10. In addition, the mold inspection apparatus 10 includes the above-described computer 20 connected to the input unit 22 and the display 24. FIG. 13 is a flowchart of a third aspect of the tire mold side plate inspection method of the present invention. In the third embodiment of the present invention, the processing accuracy in the processing step of the material metal body for producing a rotating tire-shaped tire mold side plate that defines the side plate surface shape of the tire is evaluated. In the third embodiment, in the side plate metal processing step, when there is an unexpected control error of the metal processing machine, the cutting edge is bent, or the side plate material is defective, the side plate processing is interrupted. .

  In FIG. 12, reference numeral 80 denotes a metal working machine for the side plate, which incorporates the side plate 30 to be machined, is cut by a cutting blade (not shown), and the scraped metal scraps are blown by the high-pressure air source 81. ing. The three-dimensional scanner 18 is movably attached to a rail 82 provided on the circumference.

Hereinafter, along with the flowchart shown in FIG. 13, a method for evaluating the processing accuracy in the processing step of the material metal body, which is performed using the mold inspection apparatus 10, will be described.
When the three-dimensional scanner 18 rotates along the rail 72 and starts evaluation of the processing accuracy in the processing process of the metal material body, for example, the operator uses the input means 22 to identify the tire identification number unique to the tire to be manufactured ( (Sector No. Article No., etc.) information is input (step S401). Then, while rotating the three-dimensional scanner 18, the three-dimensional shape of the entire side plate 30, that is, the shape of a profile, characters, symbols, figures, patterns, and the like is measured, and measurement data of the side plate 30 is acquired.

  When the measurement data of the side plate 30 is acquired, the measurement data measured by the three-dimensional scanner 18 is compared with the tire manufacturing specification data TD and the side plate three-dimensional shape design data D stored in the memory 40. The comparison is performed by the unit 46 (step S402). Here, the tire manufacturing specification data is information on detailed conditions of the tire vulcanization process performed using a metal processing machine for side plates. The tire manufacturing specification data includes information indicating the type of the side plate produced in the metal processing machine for the side plate. The comparison unit 46 compares and collates the tire manufacturing specification data TD, the side plate three-dimensional shape design data D, and the acquired measurement data of the side plate 30, thereby forming the shape of the material metal body in the processing step. Is determined to match the shape defined in the tire manufacturing specification data and the design data (step S403). If they do not match, it is determined that the shape accuracy of the side plate 30 is poor, and the metal working machine is stopped urgently and a warning sound or warning is displayed (step S404). If they match, the process proceeds to step S405. Here, when the “start” flag is set on the metal working machine, an inspection start signal for the side plate 30 is sent to the three-dimensional scanner 18, and the process proceeds to step S 401, where the inspection is repeated with the same operation.

  The comparison and collation in the third mode (step S402) and the determination of whether or not they match (step S403) are basically the comparison step and the determination step in the first mode and the second mode described above. It may be carried out in the same manner as. That is, in the details of each step of comparison and collation (step S402) and determination of whether or not they match (step S403) in the third aspect, for example, from measurement data, character information (characters representing the uneven shape on the side plate surface) The shape of the material metal body in the processing process is defined in the tire manufacturing specification data and design data by comparing the character information with the character information data in the manufacturing specification data. It may be determined whether or not the shape matches. Alternatively, three-dimensional shape data representing character information in the manufacturing specification data is created, and the shape represented by the three-dimensional shape character data and the shape represented by the character information data (uneven shape data on the side plate surface) in the measurement data , It may be determined whether or not the shape in the processing step of the material metal body matches the shape defined in the tire manufacturing specification data and the design data. At the time of comparison and determination, in the third aspect, the reference point may be set based on the actually processed portion. For example, when the comparison process corresponding to the first embodiment is performed, one point of the cut portion may be set as the reference point. Also, when the comparison process corresponding to the second embodiment is performed, a point corresponding to the center position of the approximate circle may be set based on the shape of the cut portion.

  The tire mold side plate inspection method and inspection apparatus of the present invention have been described in detail above. However, the present invention is not limited to the above-described embodiment, and various improvements and modifications can be made without departing from the spirit of the present invention. Of course.

It is a schematic block diagram which shows the inspection apparatus of the tire metal mold | die side plate of this invention. It is a schematic block diagram of the computer in the inspection apparatus shown in FIG. It is a schematic block diagram of the three-dimensional scanner in the inspection apparatus shown in FIG. It is an example of the flowchart of the 1st embodiment of the inspection method of the tire mold side plate of the present invention. (A) And (b) is a figure explaining 1st Embodiment of the comparison determination performed in the 1st embodiment of the inspection method of the tire metal mold side plate of this invention, and the shape which design data represents It is a figure which shows the shape which measurement data represent. In the first embodiment of the tire mold side plate inspection method of the present invention, it is a diagram for explaining a state in which the determination result is displayed and output on the display, the three-dimensional model corresponding to the measurement data displayed on the display Show. It is a figure explaining 2nd Embodiment of the comparison determination performed in the 1st embodiment of the inspection method of the tire metal mold side plate of this invention, and is a schematic perspective view which shows the shape which measurement data represent. It is a figure explaining 2nd Embodiment of the comparison determination performed in the 1st embodiment of the inspection method of the tire metal mold side plate of the present invention, and the circumference line design data in design data, and the circle in measurement data It is the example which compared the circumference line measurement data. It is an example of the flowchart of the 1st aspect of this invention, and has shown about the case where the comparison method of the said 1st and 2nd embodiment is implemented continuously. It is a figure explaining the example which enforces the 2nd aspect of the inspection method of the tire mold side plate of the present invention using the inspection device of the tire mold side plate shown in Drawing 1, and inspection of a tire mold side plate It is a schematic block diagram of an apparatus. It is an example of the flowchart of the 2nd aspect of the inspection method of the tire metal mold | die side plate of this invention. It is a figure explaining the example which implements the 3rd aspect of the inspection method of the tire mold side plate of the present invention using the inspection device of the tire mold side plate shown in Drawing 1, and inspection of a tire mold side plate It is a schematic block diagram of an apparatus. It is an example of the flowchart of the 3rd aspect of the inspection method of the tire metal mold | die side plate of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 3D shape measuring apparatus 12 Mounting stand 18 3D scanner 20 Computer 22 Input means 24 Display 30 Side plate 41 CPU
42 processing means 43 operation control unit 44 data acquisition unit 46 comparison unit 47 CPU
D Design data D1 Measurement data

Claims (20)

A method for inspecting the shape accuracy of a tire mold side plate produced based on the three-dimensional shape design data of a rotating body-shaped side plate that defines the sidewall surface shape of a tire,
Measuring the three-dimensional shape of the side plate produced based on the design data to obtain measurement data representing the three-dimensional shape of the produced side plate;
The shape represented by the measurement data is compared with the shape represented by the design data, and the deviation amount of the shape represented by the measurement data representing the shape accuracy of the manufactured side plate from the shape represented by the design data is derived. And steps to
A method for inspecting a tire mold side plate, comprising: Further, prior to the step of deriving the deviation amount, the measurement data reference point in the measurement data and the design in the design data respectively corresponding to the reference point on the surface of the side plate determined according to the shape of the side plate A data reference point, and a step for setting each.
In the step of deriving the deviation amount, the measurement data reference point and the design data reference point are matched to represent the measurement data and the design data on the same coordinate space, and the deviation amount is derived. The method for inspecting a tire mold side plate according to claim 1.   The tire mold side plate according to claim 2, wherein the reference point on the surface of the side plate determined according to the shape of the side plate is a point corresponding to an edge portion of the uneven portion on the surface of the side plate. Inspection method.   4. The method for inspecting a tire mold side plate according to claim 3, wherein the uneven portion is a portion corresponding to an identification pattern characterizing a tire manufactured using the side plate.   In the setting step, the shape represented by the measurement data and the shape represented by the design data are respectively displayed on a display screen, and the measurement is performed according to an input instruction from an operator based on each shape displayed on the display screen. 5. The tire mold side plate inspection method according to claim 2, wherein a data reference point and the design data reference point are respectively set. The reference point of the side plate surface determined according to the shape of the side plate is a point on the axis corresponding to the rotation center axis of a tire manufactured using the side plate,
The tire mold side plate according to claim 2, wherein in the setting step, the measurement data reference point corresponding to the reference point on the surface of the side plate is set according to a shape represented by the measurement data. Inspection method.   In the setting step, partial measurement data representing a shape corresponding to any one of an outer circumference, an inner circumference, and a circular pattern that form the contour of the side plate of the rotating body in the measurement data is used, and the partial measurement is performed. The tire mold side plate inspection method according to claim 6, wherein a center position of an approximate circle that approximates a shape represented by data is set as the measurement data reference point.   The tire mold side plate inspection method according to claim 1, wherein, in the step of acquiring the measurement data, a three-dimensional shape of the side plate is measured using a three-dimensional scanner.   The step of deriving the deviation amount derives a deviation amount from the design data for each of a plurality of measurement points of the measurement data, and derives the deviation amount for each of the plurality of measurement points. The tire mold side plate inspection method described.   Further, for each of a plurality of measurement points of the measurement data, the deviation amount derived in the deriving step is compared with a predetermined reference tolerance, and whether or not the deviation amount is larger than the reference tolerance. The method for inspecting a tire mold side plate according to claim 9, further comprising a step of determining each of a plurality of measurement points of the measurement data. And a display output step of displaying on the display screen at least one of the shape represented by the measurement data and the shape represented by the three-dimensional design data in a display form according to the determination result in the determining step. ,
11. The display output step displays the measurement points for which the deviation amount is determined to be larger than the reference tolerance in the determination step in a display form different from other measurement points. Inspection method for tire mold side plates.   11. The method according to claim 10, further comprising a step of marking a position on the surface of the side plate corresponding to a measurement point at which the deviation amount is determined to be larger than the reference tolerance in the determination step. Inspection method for tire mold side plates. A method for determining the type of a tire mold side plate arranged in a vulcanizer,
Measuring the three-dimensional shape of the side plate arranged in the vulcanizer, and obtaining measurement data representing the three-dimensional shape of the side plate arranged in the vulcanizer;
Obtaining the three-dimensional shape design data of the side plate of the rotating body, defining the sidewall surface shape of the tire to be produced using the vulcanizer;
Comparing the shape represented by the measurement data with the shape represented by the design data, and deriving a deviation amount of the shape represented by the measurement data from the shape represented by the design data;
Whether the side plate arranged in the vulcanizer is a side plate having a three-dimensional shape according to the sidewall surface shape of the tire to be produced using the vulcanizer based on the deviation amount. And a step of determining a tire mold side plate type determination method. Further, prior to the step of deriving the deviation amount, the measurement in the measurement data respectively corresponding to the reference point of the side plate surface determined according to the sidewall surface shape of the tire to be manufactured using the vulcanizer. A data reference point, and a design data reference point in the design data, and a step of setting each,
In the step of deriving the deviation amount, the measurement data reference point and the design data reference point are matched to represent the measurement data and the design data on the same coordinate space, and the deviation amount is derived. The method for determining the type of the tire mold side plate according to claim 13. A method for evaluating processing accuracy in a processing step of a material metal body for producing a tire mold side plate of a rotating body shape that defines a side plate surface shape of a tire,
Measuring the three-dimensional shape of the material metal body during the processing step to obtain measurement data representing the three-dimensional shape of the processed portion of the material metal body;
The shape represented by the measurement data is compared with the shape represented by the design data, and the amount of deviation of the shape represented by the measurement data from the shape represented by the design data, which represents the processing accuracy in the machining process of the material metal body, is derived. A method for inspecting a tire mold processing step. Furthermore, prior to the step of deriving the deviation amount, respectively corresponding to the reference point of the three-dimensional shape of the processed portion of the material metal body, which is determined according to the three-dimensional shape of the processed portion of the material metal body, A step of setting a measurement data reference point in the measurement data and a design data reference point in the design data,
In the step of deriving the deviation amount, the measurement data reference point and the design data reference point are matched to represent the measurement data and the design data on the same coordinate space, and the deviation amount is derived. The method for inspecting a tire mold processing step according to claim 15. An apparatus for inspecting the shape accuracy of a tire mold side plate, which is produced based on the three-dimensional shape design data of a rotating body-shaped side plate that determines the sidewall surface shape of a tire,
Means for measuring the three-dimensional shape of the side plate produced based on the design data and obtaining measurement data representing the three-dimensional shape of the produced side plate;
The shape represented by the measurement data is compared with the shape represented by the design data, and the deviation amount of the shape represented by the measurement data representing the shape accuracy of the manufactured side plate from the shape represented by the design data is derived. Means to
A tire mold side plate inspection apparatus comprising: Furthermore, there is provided means for respectively setting a measurement data reference point in the measurement data and a design data reference point in the design data corresponding to the reference point on the side plate surface determined according to the shape of the side plate. And
The means for deriving the deviation amount matches the measurement data reference point and the design data reference point set by the setting means, and represents the measurement data and the design data on the same coordinate space, 18. The tire mold side plate inspection apparatus according to claim 17, wherein a deviation amount is derived. An apparatus for determining the type of a tire mold side plate arranged in a vulcanizer,
Means for measuring the three-dimensional shape of the side plate arranged in the vulcanizer and obtaining measurement data representing the three-dimensional shape of the side plate arranged in the vulcanizer;
Means for determining the sidewall surface shape of a tire to be produced using the vulcanizer, and obtaining three-dimensional shape design data of a rotating body-shaped side plate;
Means for comparing the shape represented by the measurement data with the shape represented by the design data, and deriving a deviation amount of the shape represented by the measurement data from the shape represented by the design data;
Whether the side plate arranged in the vulcanizer is a side plate having a three-dimensional shape according to the sidewall surface shape of the tire to be produced using the vulcanizer based on the deviation amount. And a means for determining a tire mold side plate type. An apparatus for evaluating processing accuracy in a processing step of a material metal body, which is performed on the basis of the three-dimensional shape design data of the side plate for producing a tire mold side plate having a rotating body shape that defines a side plate surface shape of the tire Because
Means for measuring the three-dimensional shape of the material metal body during the processing step and obtaining measurement data representing the three-dimensional shape of the processed portion of the material metal body;
The shape represented by the measurement data is compared with the shape represented by the design data, and the amount of deviation of the shape represented by the measurement data from the shape represented by the design data, which represents the processing accuracy in the machining process of the material metal body, is derived. And a tire mold processing step inspection apparatus.

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