JPS62287957A - Correction amount display device for metal mold - Google Patents

Abstract

PURPOSE:To promote the improvement of efficiency and accuracy for correcting a metal mold, by automatically blowing ink onto a correction point of the metal mold on the basis of dimensions, shape data, etc. obtained by a three- dimensional measuring machine. CONSTITUTION:A point of correction and its amount are calculated in a control unit 6 from dimensions and shape data of a metal mold W obtained by a three- dimensional measuring machine 1, and ink is blown to the correction point of the metal mold by using an ink jetting device 5 provided in the three- dimensional measuring machine. That is, a symbol of, for instance, (x), ( ), etc., which shows the correction amount, is printed on a surface of the metal mold W. In this way, distribution of the correction amount can be accurately displayed on the surface of the metal mold, and the worker is able to concretely catch in what distribution and tendency the metal mold provides its dimension and shape as compared with the reference data further what location of the metal mold by what amount must be corrected. As the result, the improvement of efficiency and accuracy for correcting the metal mold can be attained.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention (Industrial Application Field) The present invention is capable of automatically marking the amount of mold correction on the mold surface in the finishing process of a mold such as a press mold. The present invention relates to a display device.

(Conventional technology) Conventionally, in the production of molds, in order to compare and evaluate a machined (NG processed) mold with reference design data,
As shown in Figure 3, a mold W is set on the surface plate lb of the coordinate measuring machine The dimensions and shape of the mold are determined by original measurements. At this time, the difference values between the reference data and the measured data at the measurement points are shown in stages (for example, color-coded) on the display 2, and a hard copy 3 is created which is a distribution map of the difference values.

When modifying the mold W, refer to the hard copy 3 above.
The operator marks the correction point) P on the mold W using a marker or a felt-tip pen, then stamps the amount of correction at the correction point P with a stamp, and uses a sander or file until the stamp disappears. It was corrected and completed.

(Problem to be solved by the invention) However, such correction work requires the operator to measure the dimensions on the mold and transfer the difference values, so it is difficult to make accurate measurements using a coordinate measuring machine. Even if information on the correction points is obtained, there is a problem in that accuracy errors occur in determining the correction points, which tends to lead to a decrease in the accuracy of mold correction. Further, since there are usually a large number of correction points, there is a problem in that the transfer takes time, which not only increases the number of mold manufacturing steps but also increases the labor burden.

The present invention was made in order to solve the conventional problems described in (-), and it automatically sprays ink at correction points of a mold based on dimension, shape data, etc. obtained by a three-dimensional measuring machine. It is an object of the present invention to provide a mold correction amount display device that eliminates manual transfer work and thereby improves the efficiency and accuracy of mold repair.

(Means for Solving the Problems) Therefore, the present invention provides a three-dimensional measuring machine that measures the dimensions and shape of a mold, and correction points on the mold surface based on the measurement data of the three-dimensional measuring machine. and a control device that calculates a correction amount and outputs a control signal, and an inkjet device that is installed near the sensor of the coordinate measuring machine and sprays ink to the correction point based on the control signal. shall be.

(Function) In the mold correction amount display device having the above configuration, the control device calculates correction points and correction amounts from the mold size fist shape data obtained by the three-dimensional measuring machine, and the correction points and correction amounts are calculated by the three-dimensional M constant machine. Since ink is sprayed onto the correction points of the mold using an inkjet device, it is possible to accurately display the distribution of the correction amount on the mold surface, and the operator can check the size and shape of the mold as a standard. You will be able to concretely understand what the distribution and trends are compared to the data, and what parts of the mold should be corrected and by how much.

(Example) Hereinafter, an example of the present invention will be described based on the accompanying drawings.

FIG. 1 shows a mold correction amount display device according to the present invention. In this figure, the same parts as those shown in FIG. 3 mentioned above are given the same reference numerals, and the explanation thereof will be omitted. In the figure, reference numeral 5 denotes an inkjet device installed in the vicinity of the sensor of the coordinate measuring machine 1, and the inkjet device 5 is bent so that the jet nozzle is directed to the intersection of the axis of the sensor 1b and the mold W. There is. This inkjet device 5 is a general-purpose device, and includes a control section that controls a print pattern, an ink tank that is a supply source of ink (carbon), and the like. Reference numeral 6 denotes a control device that receives measurement data from the control device 1c of the coordinate measuring machine 1 and outputs a control signal to the control section of the inkjet device 5, and has a function of calculating correction points and correction amounts on the surface of the mold W. have. Furthermore, the control device 1c of the coordinate measuring machine 1
has the ability to calculate the difference value between the reference data and the measured data.

With the above configuration, the control device 1c of the coordinate measuring machine 1 is controlled in advance.
Standard data regarding the dimensional and shape of the mold W is input in advance. First, the sensor 1b of the coordinate measuring machine 1 is brought into contact with the first measurement point on the mold W, and the measurement point is measured three-dimensionally. Control device 1 for three-dimensional measurement Ia1
c compares this measurement data with the reference data and sends the difference value together with the position data to the control device 6.

The J control device 6 calculates the amount of correction based on the data and sends a signal representing the amount of correction in stages to the control section of the inkjet device 5. As a result, the inkjet device 5 is activated, ink is ejected from its jet nozzle, and letters and symbols representing the correction amount in stages are displayed on the mold surface.
Graphics etc. are printed. Note that at this time, sensor lb is caused to escape based on control information.

The above operation is repeated for each measurement point by the three-dimensional measuring machine L, and symbols representing correction amounts such as "x" and "Δ" are placed on the surface of the mold W, as shown in FIG. is printed, and the operator stamps it with a tack or kin according to the display symbol, and performs correction work using a file or the like.

In addition, in the second embodiment, the amount of correction is printed every time the measurement is performed using the coordinate measuring machine 1.

Instead of this, it is possible to first perform constant AI over the entire area of the mold using a coordinate measuring machine 1, and then print all at once. Furthermore, in the above embodiment, letters, symbols, and figures are used to represent the amount of correction, but instead of this, it is also possible to use color coding. In this case, it is necessary to provide the inkjet device with a separate color change mechanism. be.

(Effects of the Invention) As explained in detail in Section 1 below, the present invention enables control from the size and shape data of a mold obtained by a three-dimensional measuring machine. The correction points and correction ψ were calculated at position A, and ink was sprayed onto the correction points of the mold using an inkjet device attached to the coordinate measuring machine, so the amount of correction could be accurately applied to the mold surface. The distribution can be displayed, which has the effect of increasing the efficiency and accuracy of mold correction.

[Brief explanation of drawings]

FIG. 1 is a system diagram showing a correction amount display device for a mold according to the present invention, and FIG. 2 is a perspective view showing the distribution state of correction amounts displayed on the mold surface by the correction amount display device according to the present invention. FIG. 3 is an explanatory diagram showing the conventional mold repair work in the order of steps. l... Coordinate measuring machine ■b... Sensor 5... Inkjet device 6... Control JA;? 1 Patent Applicant Toyota Motor Corporation

Claims (1)

[Claims] (1) A three-dimensional measuring machine that measures the dimensions and shape of the mold, and a control device that calculates correction points and amounts of correction on the mold surface based on the measurement data of the three-dimensional measuring machine and outputs control signals. and an inkjet device mounted near the sensor of the three-dimensional measuring machine and spraying ink to the correction point based on the control signal.