JP2020025971A - Long object processing method and processing device - Google Patents

Abstract

To provide long object processing method and processing device for keeping a dimension from an end face of a work-piece to a specified value even if there is a dimensional problem such as undulation or the like on an end face of a long processing object.SOLUTION: A long work-piece processing method includes: a process (1) in which an end face of the work-piece is caused to butt against two or more reference blocks; a process (2) in which an end face position of the work-piece is measured after the process (1); a process (3) in which end face position data at plural parts of the work-piece, which have been obtained by the process (2), is calculated by calculation means; a process (4) in which end face measurement position data is calculated by the calculation means; and a process (5) in which prescribed processing is executed on the basis of correction data which has been calculated by the process (4).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a processing method and a processing apparatus for performing predetermined processing such as drilling holes on a long workpiece such as a steel plate having a long dimension.

2. Description of the Related Art Conventionally, when processing a long workpiece (for example, a steel plate having a large size), a hole is formed by a press or the like based on an end surface of the workpiece. In such a case, since the size of the workpiece is long, the end face has an undulation of about 5 mm per 10 m of the length of the workpiece w as shown in FIG. 6 (hereinafter, the undulation includes a warped shape). Some have. When a hole is formed in the workpiece w in such a state, the following problem occurs. The problem will be described with reference to FIG. FIG. 6 schematically shows a state in which a bending process is performed after a hole is formed by a conventional method. As shown in FIG. 6, the workpiece w has undulation. If the undulation is large, when the workpiece is positioned at the reference block 910 (reference position) and the hole h is processed by the processing device, from the end face to the hole h. Varies from d2 to D2. For this reason, the distance between the hole h and the end face also varies from d2 to D2 when drilling or bending the workpiece w along the broken line C. The distance D3 from the broken line C to the end face T also changes. If the width of this variation (from d2 to D2) is outside the range of the specified value of the product, the product will be defective. The material used for processing is a long steel plate and is expensive. Therefore, the loss is large.
In view of the above circumstances, there has been a demand for a processing method and a processing apparatus for performing processing such that a product that satisfies a specified value is obtained even if the workpiece w has undulation.

  The present invention is directed to processing of a long object for keeping the dimension from the end surface of the long object to a specified value even if there is a dimensional problem such as undulation on the end surface of the long object as described above. It is an object to provide a method and a processing device.

The processing method of the first invention for solving the above-mentioned problems has the following features.
A method for processing a long workpiece,
(1) abutting the end face of the workpiece against a reference block provided with two or more pieces;
A step (2) of measuring an end face position of the workpiece after the step (1);
A step (3) of calculating the end face position data at a plurality of positions of the workpiece obtained in the step (2) by a calculating means;
A step (4) of calculating the end face measurement position data by the calculating means;
And (5) performing predetermined processing based on the correction data calculated and processed in the step (4).

The processing method of the first invention has the following effects.
The end face of the long workpiece to be processed is abutted against two or more reference blocks and positioned. After that, the end face position of the workpiece is measured by a measuring device provided in the processing apparatus for measuring the end face position. Thereby, the shape of the end surface of the workpiece can be measured. The measurement data at the plurality of end face positions is subjected to arithmetic processing by the arithmetic means, and the processing position is corrected based on the measurement result to perform drilling and the like. Even if there is undulation on the end face of the workpiece, the workpiece that has been drilled and the product that has been subjected to subsequent processing can be kept at a specified value.

A processing apparatus according to a second invention for solving the above-mentioned problems has the following features.
An apparatus for processing a long workpiece using the processing method of the first invention,
Two or more reference blocks that abut against the long side end surface of the workpiece;
A measuring device for measuring an end face position of the workpiece abutted on the reference block,
Calculating means for calculating correction data of the processing position based on the measurement data of the end face position of the workpiece at a plurality of locations obtained by the measuring device; and correction data of the processing position calculated by the calculating means. Predetermined processing is performed based on.

  According to the processing apparatus of the second invention, the same effects as those of the first invention are exhibited. Further, the processing method can be applied to a long H steel or a square pipe.

The processing apparatus of the third invention has the following features in the second invention.
The measuring device is one and moves along the long side of the workpiece to measure end face position data at a plurality of locations on the workpiece.

  In the processing device of the third invention, the position of the end face on the long side of the workpiece is measured at a plurality of locations while moving one measuring device, and the shape of the end face is measured. The number of measurement points can be appropriately increased or decreased depending on the properties of the workpiece and the lot. Therefore, the shape of the end face can be measured more accurately. Since the machining position is corrected based on the end face position measurement data measured by such a measuring method and the machining is performed, the machining accuracy of the product is further improved.

The processing apparatus of the fourth invention has the following features in the second invention.
The measuring device is provided with two or more measuring devices and measures the end face position of the workpiece at the same time.

  Since the processing device of the fourth invention is provided with a plurality of measuring devices for the end face position, it is possible to measure at the same time, the processing time of the product can be shortened, and the productivity is improved.

The processing apparatus of the fifth invention has the following features in any one of the second invention to the fourth invention.
The difference between the maximum value and the minimum value of the end face position data measured by the measuring device is defined as the amount of undulation, and a threshold is provided for the amount of undulation.If the amount of undulation is larger than the threshold, the workpiece is not processed. Has a function to judge it as a rejected product.

  The processing device according to the fifth aspect of the present invention uses the difference between the maximum value and the minimum value from the relative position of the end face position with respect to the reference block based on the measurement data of the end face position calculated by the calculating means, as the undulation amount. It can be determined whether it is within a predetermined threshold. When the undulation amount exceeds the threshold value, since the position data to be processed cannot be corrected and processed, processing is not performed and the workpiece is paid out from the processing apparatus. Since such a workpiece is not processed, it can be modified and recycled so that the amount of undulation is appropriate, and the yield is improved.

It is explanatory drawing of an example of the product processed by the processing method and processing apparatus of this invention. It is a schematic diagram of a processing device of the present invention. It is explanatory drawing of the end face position measuring device used for the processing apparatus of this invention. FIG. 3 is an explanatory diagram of a method for measuring an end face of a workpiece set in the processing apparatus of the present invention. FIG. 4 is an explanatory diagram of a method of creating correction data of a processing position on a workpiece and a processing method. It is explanatory drawing of the conventional processing method.

Next, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory view of an example of a product processed by the processing method and the processing apparatus of the present invention, FIG. 2 is a schematic diagram of the processing apparatus of the present invention, and FIG. 3 is an end face position measuring apparatus used in the processing apparatus of the present invention. FIG. 4 is an explanatory view of a method of measuring an end face of a workpiece set in the processing apparatus of the present invention, FIG. 5 is an explanatory view of a method of creating correction data of a processing position on the workpiece and a processing method, FIG. 6 is an explanatory view of a conventional processing method.

<1> Workpiece W
The workpiece W to be processed by the processing method and the processing apparatus of the present invention will be described by taking the long steel plate shown in FIG. 1A as an example. The workpiece W has undulation such as warpage, but FIG. 1A illustrates the shape of the workpiece W without undulation. The length on the long side is about 10 to 15 m, and the width is about 1 m. The long workpiece W is formed by processing a plurality of holes H at a position of a predetermined dimension L1 from the end face T on the long side. For example, the product is bent at the position of L2 from the end face position (the position of the broken line C in FIG. 1A) from the end face position, and the product has a cross section as shown in FIG. 1B. Is a member having the shape of However, since the end surface of the workpiece W undulation quantity U is present, it becomes apart by the width of the position from the end face T of the hole H from l ₂ L2. The amount of undulation U on the end face of the workpiece W is about several millimeters with respect to the long side of the workpiece W of about 10 m to about 15 m. Processing, etc.), the L1 dimension and L2 dimension are out of the specified values, and the product is defective. In FIG. 1B, since there is undulation on the end surface of the workpiece, the shape after processing is exaggerated and drawn in a mountain shape. The following description of the processing method and the processing apparatus of the present invention will be made for the workpiece in the state of FIG. It should be noted that the processing method and the processing apparatus of the present invention are not limited to the long plate-shaped workpiece shown in FIG. Applicable.

<2> Configuration of Processing Apparatus The configuration of a processing apparatus using the processing method of the present invention will be described with reference to FIG. In FIG. 2, reference numeral 10 denotes a processing apparatus of the present invention. The processing apparatus 10 includes a processing section (hole opening section) 100, an input section 200, a payout section 300, and an arithmetic unit 400. The processing unit 100 is a part for processing a hole H or the like in the workpiece W, and is also a press device. The input section 200 is a part that performs positioning of the workpiece W, measurement of the end face position, and clamping and positioning movement of the workpiece W. The payout unit 300 has a function of paying out the workpiece W processed by the processing unit 100 to a subsequent process.

  The input unit 200 is provided with a reference block 210 for positioning the end surface on the long side of the workpiece W, an end surface position measuring device 220, a clamp device 250, and a support portion for the workpiece W (not shown). Although two reference blocks 210 are provided in this drawing, two or more reference blocks may be provided. Although eight end face position measuring devices 220 are provided in this figure, the present invention is not limited to this, and may be appropriately increased or decreased according to the long dimension of the workpiece W. The configuration of the end face position measuring device will be described in detail separately. Although three clamp devices 250 are provided in this drawing, the number of the clamp devices 250 may be appropriately increased or decreased according to the dimension of the workpiece W on the long side. The clamp device 250 is provided on the carriage 240. The carriage 240 is provided with rails movable in the X direction and the Y direction in the drawing on the bases of the loading section 200 and the discharging section 300, and moves the clamped workpiece W in the X direction and the Y direction to a predetermined position. Drill a hole at the position. In this drawing, only the rail 230 that travels in the X direction is illustrated.

  The delivery section 300 is provided with a roller conveyor 310 for carrying out on a base.

<3> End Face Position Measuring Apparatus With reference to FIG. 3, an end face position measuring apparatus for the workpiece W used in the processing apparatus of the present invention will be described. FIG. 3 shows a state in which the end face position measuring device has risen and has come into contact with the end face T of the workpiece W. Eight of the present devices 220 are provided on the base of the input unit 200. The ascending and descending actuator 221 is fixed on the base. An actuator 222 that moves forward and backward and a position detector 223 such as a linear scale are disposed above the actuator 221. The actuator 222 is provided with a pin 224 that moves forward and backward at the same time. When the actuator 222 moves forward with the actuator 221 raised, the pin 224 comes into contact with the end face T of the workpiece W. At that time, a pulse or the like is output from the position detector 223 and output as end surface position data. A plurality of (eight in this figure) end face position measuring devices output a plurality of end face position data to a display device or the like, and these are processed by a calculating means.

  As shown in FIG. 2, a plurality of end surface position measuring devices may be fixedly provided, or one end surface measuring device 220 may be moved on a traveling rail to thereby obtain a long end surface position of the workpiece W. May be measured at a plurality of locations.

<4> Method of measuring end face position of work The end face position of the work is measured as follows. As shown in FIG. 4, when the workpiece W is loaded into the loading unit 200, the long end surface of the workpiece W is pressed against the reference block 210 by a pusher device (not shown). The end face of the workpiece W in this state is measured by the end face position measuring device 220 operating. The pin 224 contacts the end face T, and the end face position of the workpiece W is measured. The measured value is measured as the amount of the workpiece W with respect to the reference block 210. As shown in FIG. 5, it is measured as e1 to e8 and output to a display device or the like. The measured value is processed by the calculation means 400. The calculating means 400 calculates a positive value when the pin 224 contacts the end face of the workpiece W through the reference block, and calculates a negative value when the pin 224 contacts the reference block at the near position. . The difference between the maximum value and the minimum value among the measured values e1 to e8 of the end surface position of the workpiece W is defined as the undulation amount U.

<5> Method of Correcting Processing Position and Processing Method of Workpiece W The undulation amount U is obtained from the value obtained by measuring the end face position of the workpiece W as shown in FIG. The threshold value K of the undulation amount U is set in the arithmetic means 400 and the like. The shape of the end surface of the workpiece W is measured, and when the undulation amount U exceeds the threshold K, the workpiece W is determined to be defective and is carried out of the dispensing unit 300 without processing by the processing unit 100 and out of the apparatus. . The threshold value K is approximately 5 mm for a length of 10 m on the long side of the workpiece W as a guide depending on the required accuracy of the final product, but is not limited thereto. The processing apparatus of the present invention also has a function of determining the quality of the workpiece W before processing as described above.

  The end surface position of the workpiece W is measured, and if the amount of undulation U is within the threshold value K, the processing section 100 performs predetermined processing on the workpiece W. In order to ensure the accuracy of the processing position performed by the processing unit 100 and the accuracy of the final product after the secondary processing, the correction data of the processing performed by the processing unit 100 using the amount of undulation U in the arithmetic unit 400 as follows. Create An example of the correction method will be described.

  In FIG. 5, the undulation amount U is obtained from the measured values e1 to e8 of the end face position of the workpiece W. The correction amount Δ is calculated in the calculation means 400 in order to satisfy the specified value of the workpiece W required for the hole drilling in the processing portion with respect to the undulation amount. As the correction amount Δ, a value obtained by dividing the undulation amount U by an integer N can be used. The integer N is set based on the amount of undulation and the specified value of the product. When drilling or the like is performed in the processing unit 100 in consideration of the correction amount Δ, the accuracy of the workpiece W is maintained within a specified value. Therefore, the accuracy of the final product processed in the subsequent process is also ensured within the specified value.

  According to the processing apparatus of the present invention, even if the workpiece W has undulation as shown in FIG. 5, the shape of the undulation can be measured by the end face position measuring device of the processing apparatus of the present invention. Drilling can be performed in parallel (at a certain distance D from the end face T) along the measured undulation shape.

  As described above, according to the processing method and the processing apparatus of the present invention, even if the workpiece W has undulation, if the amount of undulation is within a certain range, the processed workpiece W and the final product are The product will be accepted, and the yield and productivity will be significantly improved.

DESCRIPTION OF SYMBOLS 10 Processing apparatus 100 Processing part 200 Input part 210 Reference block 220 End face position measuring device 230 Traveling rail 240 Carriage 250 Clamping device 300 Dispensing part 310 Roller conveyor 400 Calculation means

Claims (5)

A method for processing a long workpiece,
(1) abutting the end face of the workpiece against a reference block provided with two or more pieces;
A step (2) of measuring an end face position of the workpiece after the step (1);
A step (3) of performing arithmetic processing on end face position data at a plurality of locations of the workpiece obtained in the step (2) by an arithmetic means;
A step (4) of computing the end face measurement position data by the computing means;
A step (5) of performing predetermined processing based on the correction data calculated in the step (4). An apparatus for processing a long workpiece using the processing method according to claim 1,
Two or more reference blocks that abut against the long side end surface of the workpiece;
A measuring device for measuring an end face position of the workpiece abutted on the reference block,
Calculating means for calculating correction data of the processing position based on the measurement data of the end face position of the workpiece at a plurality of locations obtained by the measuring device; and correction data of the processing position calculated by the calculating means. A processing apparatus for performing a predetermined processing based on the following.   3. The processing apparatus according to claim 2, wherein the measurement apparatus is one, and moves along the long side of the workpiece to measure end face position data at a plurality of locations on the workpiece.   3. The processing apparatus according to claim 2, wherein two or more measurement apparatuses are provided to simultaneously measure end face position data of the workpiece. The difference between the maximum value and the minimum value of the end face position data measured by the measuring device is defined as the amount of undulation, and a threshold is provided for the amount of undulation.If the amount of undulation is larger than the threshold, the workpiece is not processed. The processing apparatus according to any one of claims 2 to 4, further comprising a function of determining a rejected product.

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