WO2018101109A1

WO2018101109A1 - Composite processing system and composite processing method

Info

Publication number: WO2018101109A1
Application number: PCT/JP2017/041721
Authority: WO
Inventors: 俊明仲神; 晃白倉; 秀樹伊佐地; 中筋　智明; 長谷川　森; 政稔木村; 文彦浅見
Original assignee: 三菱電機株式会社
Priority date: 2016-12-02
Filing date: 2017-11-20
Publication date: 2018-06-07
Also published as: CN110023033A; JPWO2018101109A1; JP6749414B2; CN110023033B

Abstract

A cutting device (1) cuts a workpiece (W) on the basis of a target value for dimensions of the workpiece (W) determined according to a design value for the dimensions of the workpiece (W) and a corrected value for the design value. A grinding device (2) has a measurement unit (200) for measuring the dimensions of the cut workpiece (W). The grinding device (2) grinds the cut workpiece (W) after the dimensions of the cut workpiece (W) have been measured by the measurement unit (200). A corrected value generation unit (4) newly generates a corrected value according to the specifications of the workpiece (W) based on the measurement value of the dimensions of the workpiece (W) measured by the measurement unit (200), the design value of the dimensions of the workpiece (W), and the previously set corrected value. The cutting device (1) cuts the workpiece (W) and other workpieces having the same specifications on the basis of the corrected value newly generated by the corrected value generation unit (4).

Description

Combined machining system and combined machining method

The present invention relates to a combined processing system and a combined processing method.

After cutting the workpiece, measure the workpiece dimensions and set the cutting conditions for the next machining of the workpiece with the same specifications based on the dimensional error obtained by subtracting the design value from the measured workpiece dimensions. A multi-task machine has been proposed (see, for example, Patent Document 1). In this multi-task machine, after cutting the workpiece, the cutting conditions when cutting a workpiece of the same specification are sequentially corrected, so that the cutting process conditions due to wear or deflection of the tool used in the multi-task machine are adjusted. Displacement is eliminated and high-precision cutting is continuously realized.

JP 2009-285782 A

However, in the combined processing machine described in Patent Document 1, workpiece cutting and measurement of the dimension of the workpiece after cutting are performed in the same combined processing machine. Therefore, in this multi-tasking machine, while the measurement of the dimension of the workpiece after cutting is being performed, cutting of another workpiece is awaited. If it does so, the throughput of a multi-tasking machine will fall.

The present invention has been made in view of the above reasons, and an object thereof is to provide a high-throughput composite processing system and a composite processing method.

In order to achieve the above object, the combined machining system of the present invention is
A first processing device that processes the workpiece based on a target value of the workpiece dimension determined by a design value of the workpiece dimension and a correction value for the design value;
A measuring unit that measures the dimension of the workpiece processed by the first processing apparatus; measures the dimension of the workpiece processed by the measuring unit; and the first processing for the workpiece after processing A second processing device that performs the same or similar processing as the processing performed by the device;
Correction value generation for generating a new correction value using at least one of the measured value of the dimension of the processed workpiece measured by the measurement unit, the design value, and the correction value And comprising
The first processing apparatus processes another workpiece having the same design value as the workpiece based on a target value of a workpiece dimension determined by the design value and a new correction value generated by the correction value generation unit. To do.

According to the present invention, the second processing apparatus has a measuring unit that measures the dimensions of the workpiece processed by the first processing apparatus. Then, the first processing device processes the workpiece based on the target value of the workpiece dimension determined by the design value and the correction value of the workpiece dimension, the second processing device processes the first processing device by the measuring unit. Measure the dimensions of the workpiece. Thereby, while the 2nd processing device is measuring the size of the work which the 1st processing device processed by the measuring part, since the 1st processing device can process other work in parallel, compounding Throughput of the entire processing system is improved.

Schematic configuration diagram of a combined machining system according to Embodiment 1 of the present invention The figure for demonstrating the cutting which the cutting control part which concerns on Embodiment 1 performs The figure for demonstrating the measuring method of the workpiece | work which the measurement control part which concerns on Embodiment 1 performs. Sequence diagram showing an example of the operation of the combined machining system according to the first embodiment Sequence diagram showing an example of the operation of the combined machining system according to the first embodiment Schematic configuration diagram of a combined machining system according to Embodiment 2 of the present invention Sequence diagram showing an example of the operation of the combined machining system according to the second embodiment The figure for demonstrating the machining accuracy determination method which the correction value production | generation part which concerns on Embodiment 2 performs. Sequence diagram showing an example of the operation of the combined machining system according to the second embodiment Sequence diagram showing an example of the operation of the combined machining system according to the second embodiment Sequence diagram showing an example of the operation of the combined machining system according to the second embodiment The flowchart which shows an example of the flow of the cutting control process which the cutting control part which concerns on Embodiment 2 performs. The flowchart which shows an example of the flow of the grinding control process which the grinding control part which concerns on Embodiment 2 performs. The flowchart which shows an example of the flow of the measurement control process which the measurement control part which concerns on Embodiment 2 performs. The flowchart which shows an example of the flow of the correction value setting process which the correction value production | generation part which concerns on Embodiment 2 performs. The flowchart which shows an example of the flow of the correction value setting process which the correction value production | generation part which concerns on Embodiment 2 performs. Schematic configuration diagram of a combined machining system according to a modified example Schematic configuration diagram of a combined machining system according to a modified example Schematic configuration diagram of a combined machining system according to a modified example Schematic configuration diagram of a combined machining system according to a modified example Schematic configuration diagram of a combined machining system according to a modified example The figure which shows correlation with the measured value of the workpiece | work input number and workpiece dimension which concern on a modification

(Embodiment 1)
Hereinafter, the combined machining system according to Embodiment 1 of the present invention will be described with reference to the drawings. The combined machining system according to the present embodiment includes one cutting device and one grinding device. Then, the combined machining system measures the dimensions of the workpiece cut by the cutting apparatus using the grinding apparatus. Then, the combined machining system adjusts the cutting depth of the tool of the cutting apparatus based on the measured value of the workpiece dimension obtained by the measurement.

The combined machining system according to the present embodiment includes a cutting device 1, a grinding device 2, and a correction value generator 4, as shown in FIG. In FIG. 1, the white arrow indicates the flow of loading the workpiece W, and the broken arrow indicates input / output of various information between the cutting apparatus 1, the grinding apparatus 2, and the correction value generation unit 4. Solid arrows indicate input / output of various information in the cutting apparatus 1 or the grinding apparatus 2. The cutting device 1 and the grinding device 2 correspond to a first processing device and a second processing device described in the claims, respectively. The cutting device 1 is constituted by, for example, an NC (Numerical Control) lathe. The cutting apparatus 1 includes a cutting unit 101 and a cutting control unit 102 that controls the cutting unit 101. The cutting unit 101 is a part that processes the workpiece W, and includes a chuck, a spindle stock, a spindle, a tool rest, and a cutting tool. Hereinafter, the tool is referred to as a tool. The cutting control unit 102 includes a computer that controls the cutting unit 101 by outputting a control signal to the cutting unit 101 via an interface. By the way, when the workpiece W is to be machined according to the design value, the target value of the machining needs to be a value obtained by adding a correction value to the design value according to the characteristics of the cutting apparatus 1 to be used. is there. Therefore, the cutting control unit 102 generates a control signal for controlling the cutting of the tool into the workpiece W by the cutting amount based on the cutting amount of the tool determined by the design value and the correction value of the workpiece W. 101. Then, the cutting unit 101 cuts the workpiece W in such a manner that the tool is cut into the workpiece W by a cutting amount corresponding to the input control signal. Specifically, as shown in FIG. 2, the cutting unit 101 has a cylindrical shape attached to the chuck in order to cut the workpiece W and set the measured value Dr of the diameter of the workpiece W to the design value Dd. The work W is rotated around the central axis J1 as indicated by an arrow AR1, and the tool B is cut by a cutting amount corresponding to the design value Dd of the dimension of the work W. That is, when a new correction value is input from the correction value generation unit 4, the cutting control unit 102 performs control corresponding to the target value of the workpiece W dimension determined by the design value of the workpiece W dimension and the new correction value. A signal is output to the cutting unit 101. And the cutting part 101 processes the other workpiece | work W which has the design value of the same dimension as the workpiece | work W based on the input control signal.

The grinding device 2 is constituted by, for example, a mechanical grinding machine having a function of measuring the dimension of the workpiece W, and performs grinding processing that is similar to the cutting processing performed by the cutting device 1 on the workpiece W after cutting. Do. Here, similar processing means that some of the effects given to the workpiece W by processing are common. For example, the grinding process is common to the cutting process in that the dimension of the workpiece W is reduced by cutting the workpiece W. The grinding apparatus 2 controls the measuring instrument 201 that measures the dimensions of the workpiece W input from the cutting apparatus 1, the measurement control unit 202 that controls the measuring instrument 201, the grinding unit 203, and the grinding unit 203. And a grinding control unit 204. Assume that the shape of the workpiece W is, for example, a columnar shape as shown in FIG. In this case, the measurement control unit 202 measures the maximum dimensions D1, D2, and D3 in a plurality of radial directions (three directions in FIG. 3) of the workpiece W that intersect each other. Although FIG. 3 shows an example of measuring the maximum dimensions D1, D2, and D3 in three directions, the radial direction to be measured is not limited to three directions, and may be two directions, for example. There may be four or more directions. Here, the measuring instrument 201 has a work holding part (not shown) that holds the work W so as to be rotatable around its central axis J1. Then, the measurement control unit 202 controls the measuring instrument 201 to measure the three radial maximum dimensions D1, D2, and D3 shown in FIG. 3 while rotating the workpiece W around the central axis J1 by 60 degrees. To do. In this way, the measurement control unit 202 acquires the maximum dimension value in the plurality of radial directions of the workpiece W. Then, the measurement control unit 202 specifies and outputs the minimum value from the plurality of acquired maximum dimension values. The measuring device 200 and the measurement control unit 202 constitute a measuring unit 200 that measures the dimensions of the workpiece W cut by the cutting apparatus 1.

The grinding part 203 has a grindstone and a holding table for holding the workpiece W in a rotatable manner. The grinding control unit 204 includes a computer that controls the grinding unit 203 by outputting a control signal to the grinding unit 203 via an interface. Further, the measurement control unit 202 stores information indicating a tolerance upper limit value that is an upper limit value of a tolerance of a dimension of the workpiece W, a tolerance lower limit value that is a lower limit value of the tolerance, and a design value of the workpiece W. It has a grinding device storage unit (not shown) which is a processing device storage unit. Then, the measurement control unit 202 calculates a dimensional error obtained by subtracting the design value from the measurement value of the workpiece W. This dimensional error indicates a positive value when the measured value exceeds the design value, and indicates a negative value when the measured value is less than the design value. The measurement control unit 202 determines that the machining accuracy is OK when the dimensional error of the workpiece W is equal to or smaller than the tolerance upper limit value and equal to or larger than the tolerance lower limit value. On the other hand, when the dimensional error of the workpiece W exceeds the tolerance upper limit value or when the dimensional error of the workpiece W is less than the tolerance lower limit value, the measurement control unit 202 determines that the machining accuracy is NG. Here, when the measurement control unit 202 determines that the dimensional error of the workpiece W exceeds the tolerance upper limit value, the grinding control unit 204 outputs a control signal for executing grinding to the grinding processing unit 203. And the grinding process part 203 performs a grinding process with respect to the workpiece | work W which the cutting apparatus 1 cut based on the input control signal. On the other hand, when the measurement control unit 202 determines that the dimensional error of the workpiece W is less than the tolerance lower limit value, the grinding control unit 204 outputs a control signal for discharging the workpiece W to the grinding processing unit 203. Then, the grinding unit 203 discharges the workpiece W based on the input control signal. Here, the dimensional error being less than the tolerance lower limit means that the dimensional error is a negative value and the absolute value of the dimensional error exceeds the absolute value of the tolerance lower limit. The grinding unit 203 grinds the work W by pressing the grindstone against the cylindrical work W rotatably held on the holding table. On the other hand, when the grinding process unit 203 skips the grinding process, the grinding process unit 203 does not perform the grinding process on the work W and discharges the work W from the grinding apparatus 2.

The correction value generation unit 4 is configured by a computer, and the measured value of the dimension of the cut workpiece W measured by the measuring unit 200, the design value of the dimension of the workpiece W, and the target value of the dimension of the workpiece W From this, a new correction value is generated. Specifically, the correction value generation unit 4 holds a design value of the dimension of the workpiece W in advance, acquires a correction value that has already been set from the cutting control unit 102 of the cutting apparatus 1, and performs grinding processing. The measurement value of the dimension of the workpiece W is acquired from the measurement control unit 202 of the apparatus 2. And the correction value production | generation part 4 calculates a new correction value using the relational expression of following formula (1).
(New correction value) = (correction value already set) − (measured value−design value) Equation (1)
For example, as illustrated in FIG. 2, it is assumed that the design value Dd of the diameter of the workpiece W is 10 mm, and the already set correction value is 0 mm. In this case, the target value of the diameter of the workpiece W set in the cutting control unit 102 is 10 mm. In this case, the cutting control unit 102 outputs a control signal for controlling the tool to be cut into the workpiece W so that the diameter of the workpiece W becomes a target value of 10 mm. Then, it is assumed that the measured value Dr of the diameter of the workpiece W after being cut by the cutting device 1 is 11 mm. In this case, (measured value Dr−design value Dd) is 1 mm. Then, the new correction value is set to 0 mm-1 mm = -1 mm. At this time, the target value of the diameter of the workpiece W set in the cutting control unit 102 is updated to 9 mm obtained by adding a new correction value −1 mm to the design value 10 mm of the workpiece W diameter. Further, it is assumed that the workpiece W is a columnar member as shown in FIG. Then, it is assumed that the measurement control unit 202 measures the three radial maximum dimensions D1, D2, and D3 for the workpiece W as described above. In this case, the correction value generation unit 4 employs the minimum value among the measured values of the three radial maximum dimensions D1, D2, and D3 as the measured value of the diameter of the workpiece W. Thereby, for example, as shown in FIG. 3, even when a burr WB exists in the work W, the influence of the burr WB on the measured value of the diameter of the work W can be suppressed. Further, not only the burr WB but also the workpiece W has a groove, the diameter can be measured. The correction value generation unit 4 outputs information indicating the new correction value calculated using the relational expression (1) described above to the cutting control unit 102 of the cutting apparatus 1. Then, the cutting control unit 102 updates the target value already set in the cutting control unit 102 to a new target value determined by the design value of the workpiece W and the new correction value input from the correction value generation unit 4. To do.

Next, the operation of the combined machining system according to the present embodiment will be described with reference to FIGS. First, the workpiece | work W is thrown into the cutting apparatus 1 (step S1).

Next, the cutting apparatus 1 sets the input completion signal to ON (step S2).

Subsequently, information indicating the correction value currently set in the cutting apparatus 1 and the program number set in the cutting apparatus 1 is output from the cutting apparatus 1 to the correction value generation unit 4 (step). S3).

Thereafter, after the first period ΔT1 has elapsed since the input completion signal is set to ON, the input completion signal is set to OFF (step S4). The length of the first period ΔT1 is set based on the time required for the cutting apparatus 1 to output various types of information to the correction value generation unit 4. The various information includes, for example, information indicating a correction value and a program number.

Next, the correction value generation unit 4 sets a skip signal instructing to skip the update of the correction value of the cutting apparatus 1 to OFF (step S5).

Subsequently, the correction value generation unit 4 sets the correction signal instructing to update the correction value of the cutting apparatus 1 to OFF (step S6). Thereafter, the workpiece W processed by the cutting apparatus 1 one cycle before is conveyed from the cutting apparatus 1 to the grinding apparatus 2.

Subsequently, the cutting apparatus 1 roughly processes the workpiece W (step S7). As shown in FIG. 2, the cutting apparatus 1 rotates the columnar workpiece W mounted on the chuck and cuts the workpiece W by pressing the tool B against the workpiece W. At this time, the cutting control unit 102 performs a cutting process based on a cutting amount of the tool determined by the design value and the correction value of the workpiece W to control to cut the tool into the workpiece W by the cutting amount. Output to the unit 101. Then, the cutting unit 101 cuts the workpiece W in such a manner that the tool is cut into the workpiece W by a cutting amount corresponding to the input control signal.

Next, the grinding device 2 discharges the workpiece W processed by the grinding device 2 one cycle before from the grinding device 2 (step S8).

Subsequently, the workpiece W transferred from the cutting apparatus 1 to the grinding apparatus 2 is put into the grinding apparatus 2 (step S9).

Thereafter, the grinding apparatus 2 measures three radial dimensions while rotating the workpiece W around the central axis J1 by 60 degrees (step S10). Then, the grinding device 2 sets the minimum value of the three measured values as the measured value of the dimension of the workpiece W. Thereafter, the grinding apparatus 2 calculates a dimensional error by subtracting the design value from the measured value of the dimension of the workpiece W, and determines the machining accuracy of the workpiece W based on the dimensional error. Specifically, the grinding apparatus 2 holds a tolerance upper limit value corresponding to a tolerance upper limit value set in advance for the workpiece W and a tolerance lower limit value corresponding to a tolerance lower limit value. Then, when the dimensional error of the workpiece W is within the tolerance, the grinding apparatus 2 determines that the machining accuracy is good (hereinafter referred to as “machining accuracy OK”). On the other hand, when the dimensional error of the workpiece W is out of the tolerance, the grinding apparatus 2 determines that the machining accuracy is poor (hereinafter referred to as “machining accuracy NG”).

Here, it is assumed that the grinding apparatus 2 determines that the workpiece W has a processing accuracy of NG and the dimensional error of the workpiece W exceeds the tolerance upper limit value (step S11).

Next, the grinding device 2 outputs processing accuracy determination information indicating the processing accuracy NG to the correction value generation unit 4 (step S12).

Subsequently, information indicating the measured value of the dimension of the workpiece W and the program number assigned to the program for controlling the grinding unit 203 of the grinding apparatus 2 is output from the grinding apparatus 2 to the correction value generation unit 4. (Step S13).

Thereafter, the grinding apparatus 2 performs a grinding process (finishing process) (step S14).

Next, when the machining accuracy determination information is input, the correction value generation unit 4 determines whether or not the program number acquired from the cutting apparatus 1 and the program number acquired from the grinding apparatus 2 are the same. . Here, it is assumed that the correction value generation unit 4 determines that these program numbers are the same (step S15).

Subsequently, the correction value generation unit 4 includes a correction value set in the cutting control unit 102 of the cutting apparatus 1, a correction value that the correction value generation unit 4 has recently set for the cutting control unit 102, and Are determined to be the same. Then, it is assumed that the correction value generation unit 4 determines that these correction values are the same (step S16). In this case, the correction value generation unit 4 determines whether or not the dimensional error of the workpiece W is within an invariable range in which the correction value is not changed based on the measurement value of the workpiece W dimension. This invariable range is also a range where adjustment of the cutting depth of the tool of the cutting part 101 of the cutting apparatus 1 is not performed. The invariable range is set based on, for example, the performance of the cutting apparatus 1 or the type of tool used in the cutting apparatus 1. Here, for example, as shown in FIG. 8, the correction value generation unit 4 holds information indicating an invariable range upper limit L3 and an invariable range lower limit L2 indicating the upper limit value and lower limit value of the invariable range. The invariable range is included within the tolerance of the workpiece W. Therefore, when the machining accuracy determination information indicates the machining accuracy NG, the correction value generation unit 4 determines that the dimensional error of the workpiece W is outside the invariable range.

Returning to FIG. 4, it is assumed that the correction value generation unit 4 determines that the adjustment of the cutting depth of the tool is necessary (step S17).

In this case, the correction value generation unit 4 calculates a new correction value using the relational expression (1) described above (step S18).

Thereafter, the correction value generation unit 4 sets the correction signal instructing to update the correction value of the cutting apparatus 1 to ON, and outputs information indicating the new correction value to the cutting apparatus 1 (step S19).

On the other hand, when the information indicating the new correction value is input from the correction value generation unit 4, the cutting apparatus 1 updates the correction value held by itself to the new correction value (step S20). Here, the cutting apparatus 1 updates the correction value to a new correction value even if the dimensional error of the workpiece W is within the tolerance.

Next, the cutting apparatus 1 finishes the workpiece W (step S21). At this time, the cutting control unit 102 controls to cut the tool into the workpiece W by the cutting amount based on the cutting amount of the tool determined by the design value of the workpiece W and the new correction value after update. A control signal is output to the cutting unit 101. Then, the cutting unit 101 cuts the workpiece W in such a manner that the tool is cut into the workpiece W by a cutting amount corresponding to the input control signal.

Subsequently, the cutting apparatus 1 discharges the workpiece W (step S22).

In another cycle, it is assumed that the grinding apparatus 2 determines that the workpiece W has the machining accuracy OK as shown in FIG. 5 (step S23).

In this case, the grinding apparatus 2 discharges the workpiece W without executing the grinding process (step S24).

Thereafter, machining accuracy determination information indicating the machining accuracy OK is output from the grinding device 2 to the correction value generation unit 4 (step S25).

Next, information indicating the measured value of the dimension of the workpiece W and the program number is output from the grinding apparatus 2 to the correction value generation unit 4 (step S26). Here, the program number is a number assigned to the program used by the grinding apparatus 2.

Subsequently, when the machining accuracy determination information is input, the correction value generation unit 4 determines whether the program number acquired from the cutting apparatus 1 and the program number acquired from the grinding apparatus 2 are the same. . Here, it is assumed that the correction value generation unit 4 determines that these program numbers are the same (step S27).

Thereafter, when the correction value generation unit 4 determines that these program numbers are the same, the correction value set in the cutting control unit 102 of the cutting apparatus 1 and the correction value generation unit 4 are the cutting control unit most recently. 102, it is determined whether or not the set correction value is the same. Then, it is assumed that the correction value generation unit 4 determines that these correction values are the same (step S28).

Next, it is assumed that the correction value generation unit 4 determines that it is not necessary to adjust the cutting depth of the tool of the cutting unit 101 of the cutting apparatus 1 (step S29).

Subsequently, the correction value generation unit 4 sets ON a skip signal that instructs to skip the update of the correction value of the cutting apparatus 1 (step S30).

Thereafter, the cutting apparatus 1 performs finishing without updating the correction value (step S31).

Next, the cutting apparatus 1 discharges the workpiece W (step S32).

As described above, according to the combined machining system according to the present embodiment, the grinding apparatus 2 includes the measuring unit 200 that measures the dimensions of the workpiece W cut by the cutting apparatus 1. Then, the cutting apparatus 1 cuts the workpiece W based on the target value of the dimension of the workpiece W obtained by adding a correction value to the design value of the dimension of the workpiece W, and the grinding apparatus 2 is operated by the measuring unit 200. The dimension of the workpiece W cut by the cutting apparatus 1 is measured. Thereby, while the grinding device 2 measures the dimensions of the workpiece W cut by the cutting device 1 by the measuring unit 200, the cutting device 1 cuts another workpiece W in parallel. Therefore, the throughput of the combined machining system as a whole is improved.

In addition, the combined machining system according to the present embodiment improves the throughput of the workpiece W compared to a configuration in which, for example, the machining of the workpiece W and the measurement of the dimension of the workpiece W after the machining are performed with the same apparatus. There is an advantage that the manufacturing efficiency is improved. In addition, since the waiting time for loading the workpiece W into the cutting device 1 is shortened, the cutting with the cutting device 1 with a larger amount of removal of the workpiece W and a longer processing time than the grinding with the grinding device 2 is performed. Is shortened.

Furthermore, in the combined machining system according to the present embodiment, the grinding machine storage unit of the grinding machine 2 has a tolerance upper limit value that is an upper limit value of the tolerance of the dimension of the workpiece W and a tolerance lower limit value that is a lower limit value of the tolerance. And the information indicating that. When the grinding apparatus 2 determines that the dimensional error exceeds the tolerance upper limit value, the grinding apparatus 2 performs the grinding process on the workpiece W cut by the cutting apparatus 1. On the other hand, if the grinding apparatus 2 determines that the dimensional error is less than the tolerance lower limit value, the grinding apparatus 2 skips execution of the grinding process on the work W and discharges the work W. Accordingly, only necessary grinding is performed while maintaining the processing accuracy of the workpiece W with high accuracy, and thus there is an advantage that throughput is improved by shortening the processing time and manufacturing efficiency is also improved.

Furthermore, in the combined machining system according to the present embodiment, for example, when the shape of the workpiece W is a cylindrical shape as shown in FIG. 3, the measuring unit 200 has the maximum dimension of the workpiece W in three directions intersecting each other. Outputs the minimum measured value. Thereby, for example, as shown in FIG. 3, the dimension of the workpiece W can be accurately measured even when the burrs WB exist in a part of the workpiece W. Accordingly, it is possible to set an appropriate correction value in the cutting control unit 102 of the cutting apparatus 1.

Moreover, in the combined machining system according to the present embodiment, as the measuring instrument 201 included in the grinding apparatus 2, a measuring instrument originally included in the grinding unit 203 of the grinding apparatus 2 can be employed. Therefore, since it is not necessary to newly provide the cutting device 1 with a function of measuring the dimension of the workpiece W, there is an advantage that the cost for updating the cutting device 1 is reduced.

(Embodiment 2)
The combined machining system according to the present embodiment is the same as the combined machining system according to the first embodiment in that it includes a cutting device that cuts a workpiece and a grinding device that grinds the workpiece. However, the complex machining system according to the present embodiment is different from the complex machining system according to the first embodiment in that an intermediate machining device that performs machining on a workpiece machined by a machining device is provided. Then, in the combined machining system according to the present embodiment, the dimensions of the workpiece that has been machined by the machining apparatus and then machined by the intermediate machining apparatus are measured, and cutting is performed based on the measurement value obtained by the measurement. Adjust the cutting depth of the tool of the processing equipment.

As shown in FIG. 6, the combined machining system according to the present embodiment includes a cutting device 1, an intermediate processing device 3, a grinding device 2, and a correction value generation unit 4. In FIG. 6, the meanings of the white arrow, the broken line arrow, and the solid line arrow are the same as those in FIG. 1 of the first embodiment. In FIG. 6, the same reference numerals are given to the same configurations as those in the first embodiment.

In the cutting control unit 102 of the cutting apparatus 1, a program number assigned to a program for controlling the cutting unit 101 according to the specification of the workpiece W and a correction value according to the specification of the workpiece W are set. Has been. Then, the cutting control unit 102 cuts the workpiece W based on the program and the correction value according to the specification of the workpiece W. For example, it is assumed that the workpiece W has a cylindrical shape and the diameter varies depending on the position in the central axis direction. In this case, the program according to the specification of the workpiece W is to determine, for example, the position of the workpiece W in the central axis direction and the cutting depth of the tool of the cutting unit 101. The grinding device storage unit of the grinding device 2 further stores information indicating an invariable range that is included in the tolerance of the workpiece W and in which the correction value is not changed. When the correction value generation unit 4 determines that the dimensional error of the workpiece W is included in the tolerance, the correction value generation unit 4 determines that the dimensional error of the workpiece W is included in the invariable range stored in the grinding device storage unit. Skips generation of correction values. On the other hand, if the correction value generation unit 4 determines that the dimensional error of the workpiece W is outside the invariable range, it generates a new correction value.

The intermediate processing device 3 includes a machining device for processing the workpiece W, a coating device for coating, or a cleaning device for cleaning the workpiece W.

Next, the operation of the combined machining system according to the present embodiment will be described with reference to FIGS. First, the workpiece W is thrown into the cutting apparatus (step S33).

Next, the cutting apparatus 1 sets the input completion signal for notifying that the input of the workpiece W to the cutting apparatus 1 has been completed to ON (step S34).

Subsequently, information indicating the correction value and the program number is output from the cutting apparatus 1 to the correction value generation unit 4 (step S35). Here, the correction value is a correction value set in the cutting control unit 102 of the cutting apparatus 1. The program number is a number assigned to the program used by the cutting control unit 102.

On the other hand, when the input completion signal is turned ON, the correction value generation unit 4 sets the input number count value X indicating the input number of the work W to be input to the cutting apparatus 1 to 1 within a preset first period ΔT1. Increment by (step S36).

Thereafter, the cutting apparatus 1 sets the input completion signal to OFF after the first period ΔT1 has elapsed since the input completion signal was set to ON (step S37). The length of the first period ΔT1 is set based on, for example, the time required for the correction value generation unit 4 to increment the insertion number count value X indicating the number of input workpieces W by one.

On the other hand, suppose that the correction value generation unit 4 determines that the input number count value X is smaller than the number n + 1 (2 when n = 1) (step S38). Here, n indicates the number of intermediate processing apparatuses 3.

In this case, the correction value generation unit 4 sets the skip signal that instructs to skip the update of the correction value of the cutting apparatus 1 to ON (step S39).

Next, the correction value generation unit 4 sets the correction signal instructing to update the correction value of the cutting apparatus 1 to OFF (step S40). Thereafter, the workpiece W processed by the cutting apparatus 1 one cycle before is conveyed from the cutting apparatus 1 to the intermediate processing apparatus 3.

Subsequently, the cutting apparatus 1 performs rough machining of the workpiece W (step S41).

Thereafter, if the skip signal is set to ON after the rough machining in step S41 is completed, the cutting apparatus 1 performs the finishing process without updating the correction value (step S42).

Further, the intermediate processing device 3 discharges the workpiece W processed by the intermediate processing device 3 one cycle before (step S43).

Next, the workpiece W transferred from the cutting apparatus 1 to the intermediate processing apparatus 3 is put into the intermediate processing apparatus 3 (step S44). Thereafter, the workpiece W processed by the intermediate processing device 3 one cycle before is conveyed from the intermediate processing device 3 to the grinding processing device 2.

Subsequently, the intermediate processing device 3 performs intermediate processing on the workpiece W input to the intermediate processing device 3 (step S45).

Thereafter, the grinding apparatus 2 discharges the workpiece W processed one cycle before (step S46).

Next, the workpiece W transferred from the intermediate processing device 3 to the grinding device 2 is put into the grinding device 2 (step S47).

Subsequently, the grinding apparatus 2 measures the dimension of the workpiece W (step S48). Thereafter, the grinding apparatus 2 determines whether or not the dimensional error of the workpiece W is within the tolerance set based on the required specifications of the workpiece W based on the measured value of the dimension of the workpiece W. Here, for example, as shown in FIG. 8, the grinding apparatus 2 holds information indicating a tolerance upper limit value L <b> 4 indicating a tolerance upper limit value, a lower limit value, and a tolerance lower limit value L <b> 1. Then, the grinding apparatus 2 calculates a dimensional error L obtained by subtracting the design value from the measured value of the dimension of the workpiece W, and when the dimensional error L exceeds the tolerance upper limit value L4 or less than the tolerance lower limit value L1. If there is, it is determined that the machining accuracy is NG. In FIG. 8, “adjustment required” indicates that adjustment of the cutting amount of the tool used by the cutting apparatus 1 is necessary. On the other hand, when the dimensional error L of the workpiece W is not more than the tolerance upper limit L4 and not less than the tolerance lower limit L1, the grinding apparatus 2 determines that the machining accuracy is OK.

7, after that, it is assumed that the grinding apparatus 2 determines that the workpiece W has the machining accuracy NG and the dimensional error is less than the tolerance lower limit value (step S49).

In this case, the grinding device 2 outputs processing accuracy determination information indicating the processing accuracy NG to the correction value generation unit 4 (step S50).

Thereafter, information indicating the measurement value of the workpiece W and the program number assigned to the program for controlling the grinding unit 203 of the grinding apparatus 2 is output from the grinding apparatus 2 to the correction value generation unit 4. (Step S51).

Next, as shown in FIG. 9, the grinding apparatus 2 issues an alarm indicating that the workpiece W is a defective product (step S52).

Subsequently, the grinding apparatus 2 stops the operation of the grinding unit 203 (step S53).

Thereafter, the grinding apparatus 2 discharges the workpiece W (step S54).

Then, when the processing by each device existing in the line including the cutting device 1, the intermediate processing device 3, and the grinding device 2 is completed, the cutting device 1 discharges the workpiece W (step S55), and the next cycle Migrate to

Thereafter, it is assumed that the workpiece W is thrown into the cutting apparatus 1 (step S56).

In this case, the cutting apparatus 1 sets the input completion signal to ON (step S57).

Next, information indicating the correction value set in the cutting control unit 102 of the cutting device 1 and the program number assigned to the program for controlling the cutting unit 101 is obtained from the cutting device 1 as a correction value generation unit. 4 (step S58).

On the other hand, when the input completion signal is turned ON, the correction value generation unit 4 calculates a count value X indicating the number of input workpieces W into the cutting apparatus 1 stored by itself within a preset first period ΔT1. Increment by 1 (step S59).

Further, the cutting apparatus 1 sets the insertion completion signal to OFF after the first period ΔT1 has elapsed since the insertion completion signal was set to ON (step S60).

Here, it is assumed that the correction value generation unit 4 determines that the value X of the input number counter is equal to or greater than the number n + 1 (2 when n = 1) that is one greater than the number of intermediate machining apparatuses 3 (step S61). .

In this case, the correction value generation unit 4 sets the skip signal instructing to skip the update of the correction value of the cutting apparatus 1 to OFF (step S62).

Also, a correction signal for instructing to update the correction value of the cutting apparatus 1 is set to OFF (step S63). Thereafter, the workpiece W processed by the cutting apparatus 1 one cycle before is conveyed from the cutting apparatus 1 to the intermediate processing apparatus 3.

Subsequently, the cutting apparatus 1 performs rough machining of the workpiece W (step S64).

Thereafter, the intermediate processing device 3 discharges the workpiece W processed one cycle before (step S65).

Next, the workpiece W transferred from the cutting device 1 to the intermediate processing device 3 is put into the intermediate processing device 3 (step S66).

Subsequently, the intermediate processing device 3 performs an intermediate processing on the workpiece W put into the intermediate processing device 3 (step S67).

Thereafter, the grinding apparatus 2 discharges the workpiece W processed one cycle before (step S68).

Next, the workpiece W transferred from the intermediate processing device 3 to the grinding device 2 is put into the grinding device 2 (step S69).

Subsequently, as shown in FIG. 10, the grinding apparatus 2 measures the dimension of the workpiece W (step S70).

Thereafter, it is assumed that the grinding apparatus 2 determines that the workpiece W has a processing accuracy of NG and the dimensional error exceeds the tolerance upper limit value (step S71).

In this case, the grinding apparatus 2 outputs machining accuracy determination information indicating the machining accuracy NG to the correction value generation unit 4 (step S72).

Subsequently, information indicating the measured value of the dimension of the workpiece W and the program number assigned to the program for controlling the grinding unit 203 of the grinding apparatus 2 is output from the grinding apparatus 2 to the correction value generation unit 4. (Step S73).

Thereafter, the grinding apparatus 2 performs a grinding process (finishing process) (step S74).

On the other hand, when the machining accuracy determination information is input, the correction value generation unit 4 determines whether or not the program number acquired from the cutting apparatus 1 and the program number acquired from the grinding apparatus 2 are the same. Then, it is assumed that the correction value generation unit 4 determines that these program numbers are the same (step S75).

Next, whether or not the correction value set in the cutting control unit 102 of the cutting apparatus 1 and the correction value set by the correction value generation unit 4 most recently for the cutting control unit 102 are the same. Determine. If the correction value generation unit 4 determines that these correction values are the same (step S76), the dimensional error of the workpiece W is the invariable range in which the correction value does not change based on the measurement value of the dimension of the workpiece W It is determined whether it is in. Here, as shown in FIG. 8, it is assumed that the dimensional error L of the workpiece W exceeds the upper limit value L3 of the invariable range or is less than the lower limit value L2 of the invariable range. In this case, the correction value generation unit 4 determines that it is necessary to generate a new correction value, that is, it is necessary to adjust the cutting depth of the tool of the cutting unit 101 of the cutting apparatus 1.

Here, it is assumed that the correction value generation unit 4 determines that adjustment of the cutting depth of the tool of the cutting unit 101 of the cutting apparatus 1 is necessary (step S77).

In this case, the correction value generation unit 4 calculates a new correction value using the relational expression (1) described above (step S78).

Subsequently, the correction value generation unit 4 sets the correction signal instructing to update the correction value of the cutting apparatus 1 to ON, and outputs information indicating the new correction value to the cutting apparatus 1 (step S79). .

On the other hand, when information indicating a new correction value is input from the correction value generation unit 4, the cutting apparatus 1 updates the correction value held by itself to the new correction value (step S80).

Thereafter, the cutting apparatus 1 finishes the workpiece W (step S81).

Then, when the processing by each device existing in the line including the cutting device 1, the intermediate processing device 3, and the grinding device 2 is completed, the cutting device 1 discharges the workpiece W (step S82), and the next cycle Migrate to

Further, as shown in FIG. 11, it is assumed that the grinding apparatus 2 determines that the workpiece W has the machining accuracy OK (step S83).

In this case, the grinding apparatus 2 discharges the workpiece W without executing the grinding process (step S84).

Next, machining accuracy determination information indicating machining accuracy OK is output from the grinding device 2 to the correction value generation unit 4 (step S85).

Subsequently, information indicating the measured value of the dimension of the workpiece W and the program number assigned to the program for controlling the grinding unit 203 of the grinding apparatus 2 is output from the grinding apparatus 2 to the correction value generation unit 4. (Step S86).

Thereafter, when the machining accuracy determination information is input, the correction value generation unit 4 determines whether or not the program number acquired from the cutting apparatus 1 and the program number acquired from the grinding apparatus 2 are the same. Here, it is assumed that the correction value generation unit 4 determines that these program numbers are the same (step S87).

In this case, the correction value generation unit 4 includes a correction value set in the cutting control unit 102 of the cutting apparatus 1, a correction value that the correction value generation unit 4 has recently set for the cutting control unit 102, and Are determined to be the same. Then, it is assumed that the correction value generation unit 4 determines that these correction values are the same (step S88).

Next, it is assumed that the correction value generation unit 4 determines that adjustment of the cutting depth of the tool of the cutting unit 101 of the cutting apparatus 1 is unnecessary (step S89).

Subsequently, the correction value generation unit 4 sets a skip signal that instructs to skip the update of the correction value of the cutting apparatus 1 to ON (step S90).

Thereafter, the cutting apparatus 1 performs finishing without updating the correction value (step S91).

Next, when the processing by each device existing in the line including the cutting device 1, the intermediate processing device 3, and the grinding device 2 is completed, the cutting device 1 discharges the workpiece W (step S92), and the next Transition to a cycle.

Next, cutting control processing executed by the cutting control unit 102 of the cutting apparatus according to the present embodiment will be described with reference to FIG. This cutting control process is started, for example, when the user turns on the power to the cutting apparatus 1.

First, the cutting control unit 102 determines whether or not the insertion of the workpiece W into the cutting apparatus 1 is detected (step S101). The cutting control unit 102 maintains the standby state unless detecting the insertion of the workpiece W (step S101: No).

On the other hand, when the cutting control unit 102 detects the loading of the workpiece W into the cutting apparatus 1 (step S101: Yes), it sets the loading completion signal to ON (step S102). Next, after executing the processing of step S102, the cutting control unit 102 sets the insertion completion signal to OFF after the preset first period ΔT1 (step S103). Subsequently, the cutting control unit 102 performs rough machining of the workpiece W by controlling the cutting unit 101 based on the target value of the dimension of the workpiece W determined by the design value of the dimension of the workpiece W and the correction value for the design value. Execute (Step S104).

After that, the cutting control unit 102 determines whether or not the skip signal input from the correction value generating unit 4 is set to OFF after the rough machining in Step S104 is completed (Step S105). When the cutting control unit 102 determines that the skip signal is set to ON (step S105: No), the cutting control unit 102 executes a process of step S109 described later.

On the other hand, when the cutting control unit 102 determines that the skip signal is set to OFF (step S105: Yes), the cutting control unit 102 determines whether the correction signal input from the correction value generation unit 4 is set to ON. (Step S106). When the cutting control unit 102 determines that the correction signal is set to OFF (step S106: No), the cutting control unit 102 executes the process of step S105 again. On the other hand, when the cutting control unit 102 determines that the correction signal is set to ON (step S106: Yes), the cutting control unit 102 acquires a new correction value from the correction value generation unit 4 (step S107), and the correction managed by itself. The value is updated with a new correction value (step S108). Thereby, the cutting control unit 102 controls the cutting unit 101 based on the target value of the dimension of the workpiece W determined by the design value of the dimension of the workpiece W and the updated new correction value to cut the workpiece W. Perform machining.

Next, the cutting control unit 102 controls the cutting unit 101 to perform the finishing process of the workpiece W (step S109). Subsequently, the cutting control unit 102 discharges the workpiece W from the cutting apparatus 1 (step S110). Thereafter, the cutting control unit 102 executes the process of step S101 again.

Next, a grinding control process executed by the grinding control unit 204 of the grinding apparatus according to the present embodiment will be described with reference to FIG. This grinding control process is started, for example, when the user turns on the power to the grinding apparatus 2.

First, the grinding control unit 204 determines whether or not the insertion of the workpiece W into the grinding apparatus 2 is detected (step S301). The grinding control unit 204 maintains the standby state unless detecting the input of the workpiece W (step S301: No).

On the other hand, when the grinding control unit 204 detects the input of the workpiece W to the grinding apparatus 2 (step S301: Yes), the grinding control unit 204 sets a measurement start signal for instructing the measurement control unit 202 to start measurement (step S301). S302). Next, the grinding control unit 204 determines whether or not the measurement completion signal input from the measurement control unit 202 is set to ON (step S303). As long as the measurement completion signal is set to OFF (step S303: No), the grinding control unit 204 maintains the standby state.

On the other hand, when the grinding control unit 204 determines that the measurement completion signal is set to ON (step S303: Yes), the grinding control unit 204 acquires machining accuracy determination information for the workpiece W from the measurement control unit 202 (step S304). Subsequently, the grinding control unit 204 determines from the content of the machining accuracy determination information whether the measurement control unit 202 has determined that the workpiece W has the machining accuracy NG and the dimensional error is less than the tolerance lower limit ( Step S305). If the measurement control unit 202 determines that the workpiece W has a processing accuracy of NG and the dimensional error is less than the tolerance lower limit (step S305: Yes), the grinding control unit 204 issues an alarm (step (step S305). In step S306, the grinding unit 203 is stopped (step S307). Thereafter, the grinding control unit 204 discharges the workpiece W from the grinding apparatus 2 (step S308), and then executes the process of step S301 again.

On the other hand, it is assumed that the measurement control unit 202 has not determined that the workpiece W has the machining accuracy NG and the dimensional error is less than the tolerance lower limit (step S305: No). In this case, the grinding control unit 204 determines whether or not the measurement control unit 202 determines that the workpiece W has the processing accuracy NG and the dimensional error exceeds the tolerance upper limit value from the content of the processing accuracy determination information. (Step S309). If the measurement control unit 202 determines that the machining accuracy is OK for the workpiece W (step S309: No), the grinding control unit 204 executes a process of step S311 described later. On the other hand, if the measurement control unit 202 determines that the workpiece W has the machining accuracy NG and the dimensional error exceeds the tolerance upper limit value (step S309: Yes), the grinding control unit 204 causes the grinding processing unit 203 to The finishing process is executed under the control (step S310). Next, when the finishing process of step S310 is completed, the grinding control unit 204 ejects the workpiece W from the grinding apparatus 2 (step S311), and executes the process of step S301 again.

Next, measurement control processing executed by the measurement control unit 202 of the grinding apparatus according to the present embodiment will be described with reference to FIG. This measurement control process is started when the user turns on the power to the grinding apparatus 2, for example.

First, the measurement control unit 202 determines whether or not the measurement start signal input from the grinding control unit 204 is set to ON (step S501). As long as the measurement start signal is set to OFF (step S501: No), the measurement control unit 202 maintains the standby state. On the other hand, when the measurement control unit 202 determines that the measurement start signal is set to ON (step S501: Yes), the measurement control unit 202 controls the measuring device 201 to measure the dimension of the workpiece W (step S502).

Next, the measurement control unit 202 calculates a dimensional error by subtracting the design value from the measurement value of the dimension of the workpiece W, and determines the machining accuracy of the workpiece W (step S503). Here, the measurement control unit 202 determines that the machining accuracy is OK when the dimensional error of the workpiece W is not more than the tolerance upper limit value and is not less than the tolerance lower limit value. On the other hand, when the dimensional error of the workpiece W exceeds the tolerance upper limit value or when the dimensional error of the workpiece W is less than the tolerance lower limit value, the measurement control unit 202 determines that the machining accuracy is NG. Subsequently, the measurement control unit 202 sets the measurement completion signal output to the grinding control unit 204 to ON (step S504). Thereafter, the measurement control unit 202 sets the measurement completion signal to OFF after the elapse of a preset fourth period (step S505), and then executes the process of step S501 again.

Next, correction value setting processing executed by the correction value generation unit 4 according to the present embodiment will be described with reference to FIGS. 15 and 16. This correction value setting process is started when the user turns on the power to both the cutting apparatus 1 and the grinding apparatus 2, for example.

First, as shown in FIG. 15, the correction value generation unit 4 determines whether or not the input completion signal input from the cutting apparatus 1 is set to ON (step S601). As long as the input completion signal is set to OFF (No in step S601), the correction value generation unit 4 maintains the standby state. On the other hand, if the correction value generation unit 4 determines that the insertion completion signal is set to ON (step S601: Yes), the correction value generation unit 4 acquires information indicating the current correction value of the cutting control unit 102 of the cutting apparatus 1 ( Step S602). Further, the correction value generation unit 4 acquires information indicating the program number assigned to the program for the cutting control unit 102 to control the cutting unit 101 from the cutting control unit 102 (step S603).

Next, the correction value generation unit 4 increments the count value X of the loading counter indicating the number of workpieces W loaded into the cutting apparatus 1 by 1 (step S604). Subsequently, the correction value generation unit 4 determines whether or not the count value X of the insertion counter is less than a value (n + 1) obtained by adding 1 to the number of intermediate machining apparatuses 3 (step S605). If the correction value generation unit 4 determines that the count value X of the insertion counter is equal to or greater than the value n + 1 (step S605: No), the correction signal generation unit 4 sets the skip signal output to the cutting apparatus 1 to OFF (step S606). On the other hand, when the correction value generation unit 4 determines that the count value X of the insertion counter is less than the value n + 1 (step S605: Yes), the correction signal generation unit 4 sets the skip signal output to the cutting apparatus 1 to ON (step S607). Thereafter, the correction value generation unit 4 sets the correction signal to OFF (step S608).

Next, the correction value generation unit 4 determines whether or not the measurement completion signal input from the measurement control unit 202 is set to ON (step S609). As long as the measurement completion signal is set to OFF (step S609: No), the correction value generation unit 4 maintains the standby state. On the other hand, if the correction value generation unit 4 determines that the measurement completion signal is set to ON (step S609: Yes), the correction value generation unit 4 acquires processing accuracy determination information from the measurement control unit 202 (step S610). Subsequently, the correction value generation unit 4 acquires a measurement value of the dimension of the workpiece W from the measurement control unit 202 (step S611). Further, as shown in FIG. 16, the correction value generation unit 4 acquires information indicating a program number assigned to a program for controlling the grinding unit 203 from the grinding control unit 204 (step S612).

Thereafter, the correction value generation unit 4 determines whether or not the program number acquired from the cutting apparatus 1 and the program number acquired from the grinding apparatus 2 are the same (step S613). If the correction value generation unit 4 determines that these program numbers are different (step S613: No), the correction value generation unit 4 clears the count value X of the input number counter to “0” (step S614), and then performs the process of step S618 described later. Execute. On the other hand, when the correction value generation unit 4 determines that these program numbers are the same (step S613: Yes), the correction value set in the cutting control unit 102 of the cutting apparatus 1 and the correction value generation unit 4 Determines whether or not the set correction value is the same for the cutting control unit 102 most recently (step S615). If the correction value generation unit 4 determines that these correction values are different (step S615: No), after clearing the count value X of the input number counter to “0” (step S614), the process of step S618 described later is performed. Execute.

On the other hand, if the correction value generation unit 4 determines that these correction values are the same (step S615: Yes), whether or not the dimensional error of the workpiece W is within the tolerance based on the measurement value of the dimension of the workpiece W. Is determined (step S616). If the correction value generation unit 4 determines that the dimensional error of the workpiece W is outside the tolerance (step S616: No), the correction value generation unit 4 performs a process of step S619 described later. On the other hand, when the correction value generation unit 4 determines that the dimensional error of the workpiece W is within the tolerance (step S616: Yes), the correction value generation unit 4 determines whether the dimensional error of the workpiece W is within the invariable range (step S617). . When the correction value generation unit 4 determines that the dimensional error of the workpiece W is within the invariable range (step S617: Yes), the skip signal output to the cutting control unit 102 of the cutting apparatus 1 is set to ON (step S618). ). Thereafter, the correction value generation unit 4 executes the process of step S601 in FIG. 15 again.

Further, when the correction value generation unit 4 determines that the dimension error of the workpiece W is outside the invariable range (step S617: No), the correction value generation unit 4 calculates a new correction value to be set in the cutting control unit 102 of the cutting apparatus 1. (Step S619). Subsequently, the correction value generation unit 4 sets the correction signal output to the cutting control unit 102 to ON (step S620). Thereafter, the process of step S601 in FIG. 15 is executed again.

As described above, according to the combined machining system according to the present embodiment, the cutting depth of the tool of the cutting apparatus 1 is determined based on the measured value of the dimension of the workpiece W that has been machined by the intermediate machining apparatus 3. Make adjustments. Thereby, it becomes possible to adjust the cutting depth of the tool of the cutting apparatus 1 in consideration of the influence of the machining by the intermediate machining apparatus 3 on the machining accuracy of the workpiece W. Therefore, there is an advantage that the machining quality of the workpiece W is improved.

Further, according to the combined machining system according to the present embodiment, the grinding machine storage unit of the grinding machine 2 stores information indicating an invariable range that is included in the tolerance and does not change the correction value. This invariable range corresponds to a range for a dimensional error in which the correction value generation unit 4 skips generation of a new correction value. And even if it is determined by the grinding apparatus 2 that the dimensional error is included in the tolerance, the correction value generation unit 4 generates a new correction value if it is determined that the dimensional error is outside the invariable range. Thereby, since the cutting depth of the tool of the cutting apparatus 1 can be adjusted to an appropriate cutting depth in advance before the dimensional error of the workpiece W is out of tolerance, the machining accuracy of the workpiece W is high. Can be maintained. If the correction value generation unit 4 determines that the dimensional error of the workpiece W is within the invariable range, the correction value generation unit 4 skips generation of a new correction value. That is, the cutting apparatus 1 does not update the correction value when the dimensional error of the workpiece W is within the invariable range. Thereby, since the adjustment frequency of the cutting depth of the tool of the cutting part 101 of the cutting apparatus 1 can be reduced, the operation rate of the cutting apparatus 1 can be improved.

In addition, according to the combined machining system according to the present embodiment, as in the combined machining system according to the first embodiment, the size of the workpiece W that the grinding device 2 has cut by the cutting device 1 by the measuring unit 200 is measured. During the measurement, the cutting apparatus 1 can cut other workpieces in parallel. Therefore, the throughput of the combined machining system as a whole can be improved.

(Modification)
While the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments. For example, it may be a combined processing system that includes a plurality of processing devices that perform cutting processing, and a workpiece that has been processed by a plurality of processing devices that perform cutting processing is input to one processing device that performs grinding processing. .

For example, as shown in FIG. 17, the combined machining system according to this modification includes two cutting devices 1, 5, one grinding device 2, and a correction value generation unit 4. In FIG. 17, the same reference numerals as those in FIG. The cutting device 5 is configured by, for example, an NC lathe device, like the cutting device 1. The cutting unit 501 and the cutting control unit 502 have the same configuration as the cutting unit 101 and the cutting control unit 102 of the cutting apparatus 1.

As in the first embodiment, the measurement control unit 202 of the grinding apparatus 2 measures the dimensions of the workpieces W1 and W2 input from the cutting apparatus 1 and the cutting apparatus 5, and measures the dimensions of the workpieces W1 and W2. Based on the dimensional error obtained by subtracting the design value from the value, the machining accuracy of the workpieces W1 and W2 is determined. The correction value generation unit 4 determines whether or not the cutting depth of the tool of the cutting device 1 or the cutting device 5 needs to be adjusted based on the dimensional errors of the workpieces W1 and W2. And if the correction value production | generation part 4 determines with adjustment of the cutting amount of a tool about the cutting apparatus 1 or the cutting apparatus 5, it is necessary to adjust the cutting of the tool of the cutting apparatus 1 or the cutting apparatus 5 which needs adjustment. A new correction value corresponding to the amount is calculated.

In the combined machining system shown in FIG. 17, when the workpiece W1 is input to the cutting apparatus 1, the cutting apparatus 1 performs rough machining on the workpiece W1, and then receives a correction signal or a skip signal from the correction value generation unit 4. It is output to the grinding device 2. When a correction signal is output from the correction value generation unit 4, the grinding apparatus 2 updates the correction value and performs finishing. On the other hand, when a skip signal is output from the correction value generation unit 4, the grinding apparatus 2 performs finishing without updating the correction value. The grinding device 2 discharges the workpiece W1 after finishing.

Similarly to the cutting apparatus 1, the cutting apparatus 5 performs rough machining of the workpiece W2, and then determines whether or not it is necessary to update the correction value according to the correction signal output from the correction value generation unit 4 or the skip signal. To do. Thereafter, finishing is performed and the workpiece W2 is discharged.

The workpiece W1 discharged from the cutting apparatus 1 or the workpiece W2 discharged from the cutting apparatus 5 is conveyed to the grinding apparatus 2 and is input to the grinding apparatus 2.

When the workpieces W1 and W2 are put into the grinding device 2, the grinding device 2 measures the dimensions of the workpieces W1 and W2. Then, the grinding apparatus 2 determines whether or not grinding is necessary based on the measured values of the dimensions of the workpieces W1 and W2. Here, when the grinding apparatus 2 determines that the grinding process is necessary, the grinding apparatus 2 executes the grinding process and then discharges the workpieces W1 and W2. On the other hand, when the grinding apparatus 2 determines that the grinding process is unnecessary, the grinding apparatus 2 discharges the workpieces W1 and W2 without executing the grinding process.

On the other hand, the correction value generation unit 4 calculates the dimensional error of the workpieces W1 and W2 by subtracting the design value from the measured values of the dimensions of the workpieces W1 and W2 measured by the grinding apparatus 2. Then, the correction value generation unit 4 controls the cutting control of the cutting device 1 or the cutting device 5 according to whether or not the dimensional errors of the workpieces W1 and W2 are within a preset invariable range. A new correction value to be set in the unit 502 is calculated. When the dimensional error of the workpieces W1 and W2 is outside the invariable range, the correction value generator 4 calculates a new correction value and outputs it to the cutting devices 1 and 5. In this case, the cutting apparatuses 1 and 5 adjust the cutting depth of the tool by updating the correction value held by itself with the new correction value input from the correction value generation unit 4.

In addition, in FIG. 17, although the example of a structure provided with the two cutting devices 1 and 5 is shown, the number of cutting devices is not limited to two, The structure provided with three or more cutting devices. It may be.

According to this configuration, even in a combined machining system including a machining apparatus that performs a plurality of cutting processes and a machining apparatus that performs one grinding process, the same effects as the combined machining system according to the first embodiment can be obtained.

In Embodiment 1, an example of a combined machining system including one grinding apparatus 2 has been described, but the number of grinding apparatuses is not limited to one. For example, it may be a combined machining system including a plurality of grinding machines.

For example, as shown in FIG. 18, the combined machining system according to this modification includes one cutting device 1, grinding

devices

2 and 6 that perform two grinding operations, and a correction value generation unit 4. In FIG. 18, the same reference numerals as those in FIG. As with the grinding apparatus 2, the grinding apparatus 6 is composed of, for example, a mechanical grinding machine having a function of measuring the dimension of the workpiece W4. The measuring device 601, the measurement control unit 602, the grinding processing unit 603, and the grinding control unit 604 have the same configuration as the measuring device 201, the measurement control unit 202, the grinding processing unit 203, and the grinding control unit 204 of the grinding device 2.

The measurement control unit 202 of the grinding apparatus 2 is obtained by measuring the dimension of the workpiece W3 input from the cutting apparatus 1 and subtracting the design value from the measured value of the dimension of the workpiece W3, as in the first embodiment. Based on the dimensional error, the machining accuracy of the workpieces W3 and W4 is determined. The measurement control unit 602 of the grinding device 6 also measures the dimensions of the workpiece W4 input from the cutting device 1 in the same manner as the grinding device 2, and subtracts the design value from the measured value of the dimensions of the workpiece W4. Based on the dimensional error obtained, the machining accuracy of the workpiece W4 is determined. The correction value generation unit 4 determines whether or not it is necessary to adjust the cutting depth of the tool of the cutting apparatus 1 based on the dimensional errors of the workpieces W3 and W4. When the correction value generation unit 4 determines that the cutting depth of the tool needs to be adjusted for the cutting device 1, the correction value generation unit 4 calculates a new correction value to be set in the cutting control unit 102 of the cutting device 1.

In the combined machining system shown in FIG. 18, when the workpieces W3 and W4 are input to the cutting apparatus 1, the cutting apparatus 1 performs correction from the correction value generation unit 4 after rough machining of the workpieces W3 and W4 is performed. A signal or skip signal is output. When the correction signal is output, the correction value is updated to perform the finishing process, and when the skip signal is output, the correction value is not updated and the finishing process is performed. After finishing, the workpieces W3 and 4 are discharged. The workpieces W3 and 4 discharged from the cutting apparatus 1 are conveyed to the grinding apparatus 2 and the grinding apparatus 6, respectively, and are input to the grinding apparatus 2 and the grinding apparatus 6.

When the workpiece W3 is input to the grinding device 2, the grinding device 2 measures the dimension of the workpiece W3. Then, the grinding apparatus 2 determines whether or not the grinding process is necessary based on the measured value of the dimension of the workpiece W3. Here, if the grinding apparatus 2 determines that the grinding process is necessary, the grinding apparatus 2 executes the grinding process and then discharges the workpiece W3. On the other hand, when the grinding apparatus 2 determines that the grinding process is unnecessary, the grinding apparatus 2 discharges the workpiece W3 without executing the grinding process. The grinding device 6 also measures the dimensions of the workpiece W4, as with the grinding device 2, and determines whether or not grinding is necessary based on the measured value of the dimensions of the workpiece W4. Then, the grinding apparatus 6 discharges the workpiece W4 after performing the grinding process according to the determination result of the necessity of the grinding process.

On the other hand, the correction value generation unit 4 calculates the dimensional error of the workpieces W3 and W4 by subtracting the design value from the measured values of the dimensions of the workpieces W3 and W4 measured by the grinding device 2 and the grinding device 6. Then, the correction value generation unit 4 determines a new correction value to be set in the cutting control unit 102 of the cutting apparatus 1 depending on whether or not the dimensional error of the workpieces W3 and W4 is within a preset invariable range. Is calculated. When the dimensional error of the workpieces W3 and W4 is outside the invariable range, the correction value generation unit 4 calculates a new correction value and outputs it to the cutting apparatus 1. In this case, the cutting apparatus 1 adjusts the cutting depth of the tool by updating the correction value held by itself with the new correction value input from the correction value generation unit 4.

In addition, in FIG. 18, although the example of the composite processing system provided with the two grinding

processing apparatuses

2 and 6 is shown, the number of grinding processing apparatuses is not limited to two. For example, it may be a combined machining system including three or more grinding machines.

According to this configuration, the same effect as that of the first embodiment can be obtained even in a combined machining system including a machining apparatus that performs one cutting process and a machining apparatus that performs a plurality of grinding processes.

In each of the above-described modified examples, the configuration including only one of the cutting device and the grinding device has been described. However, the present invention is not limited to this. For example, a plurality of cutting devices and a plurality of grinding devices are provided. And a combined machining system.

In the second embodiment, the workpiece W is cut only once by one cutting device 1, then processed by the intermediate processing device 3, and then grinding is performed once by one grinding device 2. An example of a combined machining system that only performs is described. However, the present invention is not limited to this, for example, a composite in which the workpiece W is cut a plurality of times by a plurality of cutting devices and then processed by an intermediate processing device and then a plurality of grinding devices by a plurality of grinding devices. It may be a processing system.

For example, as shown in FIG. 19, the combined machining system according to this modification includes two cutting devices 1 and 5, two grinding

devices

2 and 6, an intermediate machining device 3, and a correction value generation unit 4. . In FIG. 19, the same components as those in the second embodiment are denoted by the same reference numerals as those in FIG. The symbol is attached.

The measurement control unit 202 of the grinding apparatus 2 measures the dimension of the workpiece W input from the intermediate machining apparatus 3 and subtracts the design value from the measured value of the dimension of the workpiece W in the same manner as in the second embodiment. A dimension error is calculated, and the machining accuracy of the workpiece W is determined based on the dimension error. Then, the correction value generation unit 4 determines whether or not the adjustment of the cutting depth of the tool of the cutting apparatus 1 is necessary based on the dimensional error of the workpiece W calculated by the measurement control unit 202 of the grinding apparatus 2. When the correction value generation unit 4 determines that the cutting depth of the tool needs to be adjusted for the cutting device 1, the correction value generation unit 4 calculates a new correction value to be set in the cutting control unit 102 of the cutting device 1. Further, the measurement control unit 602 of the grinding apparatus 6 measures the dimensions of the workpiece W input from the grinding apparatus 2 in the same manner as in the second embodiment, and subtracts the design value from the measured value of the dimensions of the workpiece W. Thus, the dimensional error is calculated, and the machining accuracy of the workpiece W is determined based on the dimensional error. Then, the correction value generation unit 4 determines whether or not it is necessary to adjust the cutting depth of the tool of the cutting device 5 based on the dimensional error of the workpiece W calculated by the measurement control unit 602 of the grinding device 6. When the correction value generation unit 4 determines that the cutting depth of the tool needs to be adjusted for the cutting device 5, the correction value generation unit 4 calculates a new correction value to be set in the cutting control unit 502 of the cutting device 5. That is, the cutting device 1, the cutting device 5, the intermediate processing device 3, the grinding device 2, and the correction value generation unit 4 constitute a combined machining system similar to that of the second embodiment, The machining apparatus 3, the grinding apparatus 2, the grinding apparatus 6, and the correction value generation unit 4 constitute a combined machining system similar to that of the second embodiment.

In the combined machining system shown in FIG. 19, the cutting devices 1 and 5 cut different portions of the workpiece W, and the grinding

devices

2 and 6 are respectively cut by the cutting devices 1 and 5 on the workpiece W. Grind the part that was cut. In this combined machining system, when the workpiece W is input to the cutting apparatus 1, the cutting apparatus 1 executes rough machining of the workpiece W and then follows a correction signal or a skip signal output from the correction value generation unit 4. Then, it is determined whether or not the correction value needs to be updated. Thereafter, finishing is performed and the workpiece W is discharged. The workpiece W discharged from the cutting apparatus 1 is conveyed to the cutting apparatus 5 and is input to the cutting apparatus 5. When the workpiece W is input to the cutting device 5, the cutting device 5 performs rough machining of the workpiece W in the same manner as the cutting device 1, and then outputs a correction signal or a skip signal from the correction value generation unit 4. Is done. When the correction signal is output, the correction value is updated to perform the finishing process, and when the skip signal is output, the correction value is not updated and the finishing process is performed. After executing the finishing process, the workpiece W is discharged. The workpiece W discharged from the cutting device 5 is transported to the intermediate processing device 3 and input to the intermediate processing device 3. When the workpiece W is thrown into the intermediate machining device 3, the intermediate machining device 3 performs processing on the workpiece W and then discharges the workpiece W. The workpiece W discharged from the intermediate processing device 3 is conveyed to the grinding device 2 and is input to the grinding device 2.

When the workpiece W is input to the grinding device 2, the grinding device 2 measures the dimensions of the workpiece W. Then, the grinding apparatus 2 determines whether or not grinding is necessary based on the measured value of the dimension of the workpiece W. Here, if the grinding apparatus 2 determines that the grinding process is necessary, the grinding apparatus 2 performs the grinding process and then discharges the workpiece W. On the other hand, if the grinding apparatus 2 determines that the grinding process is unnecessary, the grinding apparatus 2 discharges the workpiece W without performing the grinding process. The workpiece W discharged from the grinding apparatus 2 is conveyed to the grinding apparatus 6 and is input to the grinding apparatus 6. When the workpiece W is input to the grinding device 6, the grinding device 6 measures the dimension of the workpiece W. Then, the grinding device 6 determines whether or not grinding is necessary based on the measured value of the dimension of the workpiece W. Here, when the grinding apparatus 6 determines that the grinding process is necessary, the grinding apparatus 6 performs the grinding process and then discharges the workpiece W. On the other hand, when the grinding apparatus 6 determines that the grinding process is unnecessary, the grinding apparatus 6 discharges the workpiece W without executing the grinding process. In addition, even when the workpiece W is discharged without performing the grinding process on the workpiece W in the cutting device 2, the grinding device 6 discharges the workpiece W without performing the grinding process.

On the other hand, the correction value generation unit 4 calculates the dimension error of the workpiece W by subtracting the design value from the measured value of the dimension of the workpiece W measured by each of the grinding

apparatuses

2 and 6. Then, the correction value generation unit 4 is set in the cutting control unit 102 of the cutting apparatus 1 according to whether or not the dimensional error of the workpiece W calculated by the grinding apparatus 2 is within a preset invariable range. A new correction value to be calculated is calculated. When the dimensional error of the workpiece W calculated by the grinding device 2 is outside the invariable range, the correction value generation unit 4 calculates a new correction value and outputs it to the cutting device 1.
In this case, the cutting apparatus 1 adjusts the cutting depth of the tool by updating the correction value held by itself with the new correction value input from the correction value generation unit 4.

Further, the correction value generation unit 4 is set in the cutting control unit 502 of the cutting device 5 according to whether or not the dimensional error of the workpiece W calculated by the grinding device 6 is within a preset invariable range. A new correction value to be calculated is calculated. When the dimensional error of the workpiece W calculated by the grinding apparatus 6 is outside the invariable range, the correction value generation unit 4 calculates a new correction value and outputs it to the cutting apparatus 5. In this case, the cutting apparatus 5 adjusts the cutting depth of the tool by updating the correction value held by itself with the new correction value input from the correction value generation unit 4.

In addition, in FIG. 19, although shown about the structure provided with the two cutting processing apparatuses 1 and 5 and the two grinding

processing apparatuses

2 and 6, the number of each of a cutting processing apparatus and a grinding processing apparatus is not limited to this. For example, it may be a combined processing system including three or more cutting devices or grinding devices. Further, FIG. 19 shows a combined machining system including one intermediate machining device 3, but the number of intermediate machining devices 3 is not limited to one. For example, a combined machining system including a plurality of intermediate machining devices may be used. In addition, FIG. 19 shows a configuration including one correction value generation unit 4, but the number of correction value generation units 4 is not limited to one, and a composite including a plurality of correction value generation units 4. It may be a processing system.

According to this configuration, the workpiece W is subjected to a plurality of cutting processes by a plurality of cutting apparatuses, and then subjected to a process by an intermediate processing apparatus, and then a plurality of grinding processes are performed by a plurality of grinding apparatuses. The same effects as those of the combined machining system according to the second embodiment can be obtained.

In the combined machining system according to the second embodiment, when the identification information for identifying the specification of the workpiece W classified by the shape and size of the workpiece W is engraved in a part of the workpiece W, the cutting apparatus and the grinding Each processing apparatus may be configured to include an identification information reading unit that reads identification information carved into a part of the workpiece W.

For example, as shown in FIG. 20, the combined machining system according to this modification includes a cutting device 21, a grinding device 22, an intermediate processing device 3, a correction value generation unit 24, and a cutting control of the cutting device 21. A correction value storage unit 25 that stores a correction value to be set in the unit 102. In FIG. 20, the same reference numerals as those in FIG. The cutting device 21 includes a cutting unit 101, a cutting control unit 102, and an identification information reading unit 213 that reads identification information engraved on a part of the workpiece W. The grinding apparatus 22 includes a measuring instrument 201, a measurement control unit 202, a grinding processing unit 203, a grinding control unit 204, and an identification information reading unit 225. Here, the identification information reading unit 213 corresponds to the first identification information reading unit described in the claims, and the identification information reading unit 225 corresponds to the second identification information reading unit described in the claims. . The identification

information reading units

213 and 225 recognize, for example, an identification unit engraved on the workpiece W by analyzing an image captured by the imaging unit and an imaging unit (not illustrated) that captures a part of the workpiece W. An image recognition unit (not shown). The identification

information reading units

213 and 225 output the recognized identification information of the workpiece W to the correction value generation unit 24.

The correction value storage unit 25 includes a storage device, and stores a correction value to be set in the cutting control unit 102 of the cutting device 21 in association with the identification information of the workpiece W. When the information indicating the measurement value of the dimension of the workpiece W11 and the identification information of the workpiece W11 are input from the grinding device 22, the correction value generation unit 24 cuts the workpiece to which the same identification information as the workpiece W11 is given. The necessity of adjusting the cutting depth of the tool of the processing device 21 is determined. When the correction value generation unit 24 determines that it is necessary to adjust the cutting depth of the tool of the cutting device 21 for the workpiece to which the same identification information as that of the workpiece W11 is given, the correction value generation unit 24 has already sent to the cutting control unit 102 of the cutting device 21. The set correction value is acquired and a new correction value is calculated. Then, the correction value generation unit 24 stores the calculated new correction value in the correction value storage unit 25 in a form associated with the identification information of the workpiece W11. Thereafter, when the workpiece W12 is input to the cutting device 21, the identification information reading unit 213 of the cutting device 21 reads the identification information engraved on a part of the workpiece W12 and outputs it to the correction value generation unit 24. Here, when the identification information of the workpiece W12 input from the identification information reading unit 213 of the cutting device 21 is the same identification information as that of the workpiece W11, the correction value generation unit 24 reads from the correction value storage unit 25 of the workpiece W11. A correction value associated with the identification information is acquired. Then, the correction value generation unit 24 outputs the correction value acquired from the correction value storage unit 25 to the cutting control unit 102 of the cutting device 21.

In the combined machining system shown in FIG. 20, when the workpiece W11 is put into the cutting device 21, the cutting device 21 reads the identification information engraved on a part of the workpiece W11 and executes rough machining of the workpiece W. After that, a correction signal or a skip signal is output from the correction value generation unit 24. When the correction signal is output, the correction value is updated to perform the finishing process, and when the skip signal is output, the correction value is not updated and the finishing process is performed. Thereafter, the cutting device 21 discharges the workpiece W. The workpiece W11 discharged from the cutting device 21 is transported to the intermediate processing device 3 and thrown into the intermediate processing device 3. When the workpiece W11 is input to the intermediate processing device 3, the intermediate processing device 3 executes processing on the workpiece W and then discharges the workpiece W11. The workpiece W discharged from the intermediate processing device 3 is conveyed to the grinding device 22 and is input to the grinding device 22.

When the workpiece W11 is put into the grinding device 22, the grinding device 22 reads the identification information engraved on a part of the workpiece W11 and measures the dimension of the workpiece W11. Then, the grinding device 22 determines whether or not grinding is necessary based on the measured value of the dimension of the workpiece W11. Here, when the grinding apparatus 22 determines that the grinding process is necessary, the grinding apparatus 22 performs the grinding process and then discharges the workpiece W11. On the other hand, when determining that the grinding process is unnecessary, the grinding apparatus 22 discharges the workpiece W11 without performing the grinding process.

On the other hand, the correction value generation unit 24 acquires the measured value of the dimension of the workpiece W11 and the identification information of the workpiece W11 from the grinding device 22. Then, the correction value generation unit 24 calculates the dimensional error of the workpiece W11 by subtracting the design value from the measured value of the dimension of the workpiece W11 measured by the grinding device 22. Then, the correction value generation unit 24 is set in the cutting control unit 102 of the cutting device 21 according to whether or not the dimensional error of the workpiece W11 calculated by the grinding device 22 is within a preset invariable range. A new correction value to be calculated is calculated. The correction value generation unit 24 calculates a new correction value when the dimensional error of the workpiece W11 calculated by the grinding device 22 is outside the invariable range. Then, the correction value generation unit 24 stores the calculated new correction value in the correction value storage unit 25 in a form associated with the identification information of the workpiece W11. Thereafter, when the workpiece W12 is input to the cutting device 21, the identification information reading unit 213 of the cutting device 21 reads the identification information engraved on a part of the workpiece W12 and outputs it to the correction value generation unit 24. Here, when the identification information of the workpiece W12 input from the identification information reading unit 213 of the cutting device 21 is the same identification information as that of the workpiece W11, the correction value generation unit 24 reads from the correction value storage unit 25 of the workpiece W11. A correction value associated with the identification information is acquired. Then, the correction value generation unit 24 outputs the correction value acquired from the correction value storage unit 25 to the cutting control unit 102 of the cutting device 21. In this case, the cutting apparatus 1 adjusts the cutting depth of the tool by updating the correction value held by itself with the new correction value input from the correction value generation unit 24.

In addition, in FIG. 20, although the composite processing system provided with the one intermediate processing apparatus 3 was shown, the number of the intermediate processing apparatuses 3 is not limited to one. For example, a combined machining system including a plurality of intermediate machining devices may be used.

By the way, in the combined machining system according to the second embodiment, a workpiece of the same type as the workpiece is thrown into the cutting device 1 until the workpiece machined by the cutting device 1 is put into the grinding device 2. Also, the correction value of the cutting control unit 102 of the cutting apparatus 1 cannot be updated. Accordingly, for example, in a combined machining system including n (n is an integer of 1 or more) intermediate machining devices 3, cutting is performed on n workpieces in a state where the cutting depth of the tool of the machining device 1 is not appropriate. There is a risk that.

On the other hand, according to this configuration, the correction value calculated based on the measured value of the dimension of the workpiece W11 measured by the grinding apparatus 22 is associated with the identification information of the workpiece W11 in the correction value storage unit. 25. Then, when the workpiece W12 partially engraved with the identification information identical to the identification information of the workpiece W11 is input to the cutting device 21, the correction value generation unit 24 reads the correction value from the correction value storage unit 25. A correction value associated with the identification information of the workpiece W11 is acquired and output to the cutting device 21. Thereby, since the cutting apparatus 21 can perform a cutting process in the state which adjusted the tool to the appropriate cutting amount with respect to each input workpiece | work, it can reduce the defect rate of a workpiece | work.

In the second embodiment, the correction value generation unit 4 is set in the cutting control unit 102 of the cutting apparatus 1 based on the measured value of the workpiece dimension measured by the grinding apparatus 2 and the design value of the workpiece dimension. An example in which a new correction value is calculated has been described. However, the present invention is not limited to this. For example, the correction value generation unit 4 determines the number of workpieces input to the cutting apparatus 1 and the workpiece dimensions in addition to the measurement values of the workpiece dimensions and the design values of the workpiece dimensions. A configuration may be used in which a new correction value is calculated based on correlation information indicating a correlation with a measurement value.

For example, as shown in FIG. 21, the combined machining system according to this modification includes a cutting apparatus 1, a grinding apparatus 2, an intermediate machining apparatus 3, a correction value generation unit 34, a result storage unit 35, and a correlation. An information storage unit 36. In FIG. 21, the same reference numerals as those in FIG. The record storage unit 35 is configured from a storage device, and stores record information indicating a record of a work cut by the cutting apparatus 1. This performance information includes the number of workpieces inserted into the machining apparatus 1, the program number assigned to the program used for machining each workpiece, the measured value of the workpiece dimensions, and the cutting performed at the time of machining each workpiece. The correction value set in the control unit 102 is associated with the information. The correlation information storage unit 36 stores correlation information indicating the correlation between the number of workpieces input to the cutting apparatus 1 and the measured value as shown in FIG. The correlation information is created individually for each program number (for example, Pro1, Pro2, Pro3, Pro4).

21, the correction value generation unit 34 counts the number of workpieces W input to the cutting apparatus 1. This number of inputs is the total number of inputs since the tool was changed in the cutting apparatus 1. When the information indicating the measurement value of the dimension of the workpiece W21 is input from the grinding apparatus 2, the correction value generation unit 34 converts the input measurement value into the measurement value that is already stored in the result storage unit 35. The results are stored in the result storage unit 35 in association with the corresponding number of inputs, program number, and correction value. Here, the number of inputs is the number of workpieces input to the cutting apparatus 1 when the workpiece W21 is input to the cutting apparatus 1, and the program number is the program number of the program used for cutting the workpiece W21. is there. The correction value is a correction value used for cutting the workpiece W21. Thereafter, when the workpiece W is input to the cutting apparatus 1, the correction value generation unit 34 includes information indicating a program number assigned to the program used for cutting the input workpiece W from the cutting apparatus 1. The correction value is acquired and the result storage unit 35 stores it. Further, the correction value generating unit 34 increments the number of input corresponding to the acquired program number and correction value by one. Then, the correction value generation unit 34 individually inputs the number of workpieces for each program number based on the record information stored in the record storage unit 35 so far when the tool is exchanged in the cutting apparatus 1. Correlation information representing the correlation between the measured value and the measured value is generated and stored in the correlation information storage unit 36.

Moreover, when the information which shows the measured value of the dimension of the workpiece | work W21 is input from the grinding device 2, the correction value production | generation part 34 will determine the necessity of adjustment of the cutting depth of the tool of the cutting device 1 about the workpiece | work W21. . When the correction value generation unit 34 determines that the adjustment of the cutting depth of the tool of the cutting apparatus 1 is necessary for the workpiece W21, the correction value generation unit 34 calculates the actual value from the input measurement value based on the correlation information stored in the correlation information storage unit 36. Calculate machining dimensions. For example, it is assumed that the program number of the program used for cutting the workpiece W21 is “Pro2”. Further, when the workpiece W21 is input to the cutting apparatus 1, the number of workpieces input to the cutting apparatus 1 is M1, and information indicating the measured value of the dimension of the workpiece W21 is supplied from the grinding apparatus 2 to the correction value generation unit 34. It is assumed that the number of workpieces input to the cutting apparatus 1 at the time of input to is M2. In this case, the correction value generation unit 34 specifies the measurement values Dr1 and Dr2 corresponding to the numbers M1 and M2, respectively, based on the correlation information stored in the correlation information storage unit 36 (see FIG. 22). Next, the correction value generation unit 34 calculates a corrected measurement value corresponding to the sum of the dimension value and the measurement value obtained by subtracting the measurement value Dr1 from the measurement value Dr2. And the correction value production | generation part 34 calculates a correction value newly using the relational expression of following formula (2).
(New correction value) = (correction value already set) − (corrected measurement value−design value) (2)
Then, the correction value generation unit 34 outputs the calculated new correction value to the cutting control unit 102 of the cutting apparatus 1.

According to this configuration, the correction value generation unit 34 performs cutting based on the correlation information indicating the correlation between the number of workpieces inserted in the cutting apparatus 1 and the measurement value of the workpiece dimensions, which is stored in the result storage unit 35. A new correction value to be set in the cutting control unit 102 of the processing apparatus 1 is calculated. As a result, the cutting performance of the cutting device 1 due to the cutting of the workpiece performed by the cutting device 1 between the time when the workpiece is input to the cutting device 1 and the time when the workpiece is input to the grinding device 2. In consideration of these fluctuations, a new correction value to be set in the cutting control unit 102 of the cutting apparatus 1 is determined. Therefore, since an appropriate correction value is set by the cutting control unit 102, there is an advantage that the machining accuracy of the cutting apparatus 1 is improved and the defect rate of the workpiece is reduced.

In Embodiment 2, although the correction value generation part 4 demonstrated the example which acquires the program number provided to the program used for control of the cutting part 101 from the cutting control part 102 of the cutting apparatus 1, it is in process. The program number is not limited as long as the information specifies the specifications of the workpiece W. For example, the correction value generation unit 4 may acquire various parameters set according to the specifications of the workpiece W to be processed by the cutting control unit 102 from the cutting control unit 102.

In Embodiment 2, the configuration in which only one intermediate processing device 3 is provided has been described, but the number of intermediate processing devices 3 is not limited to one. For example, the structure which equips the intermediate processing apparatus 3 (n is an integer greater than or equal to 2) units may be sufficient, or the structure which does not include the intermediate processing apparatus 3 may be sufficient.

In each embodiment, the example in which the cutting device 1 and the grinding device 2 are provided and the measuring unit 200 is provided in the grinding device 2 has been described. However, the present invention is not limited thereto, and for example, two cutting devices 1 are provided. The measurement part 200 may be configured to be provided in any one of the cutting devices 1. Or the structure provided with the two grinding | polishing processing apparatuses 2 and the measurement part 200 provided in those grinding | polishing processing apparatuses 2 may be sufficient. Furthermore, the structure by which the workpiece | work W is thrown in order of the grinding apparatus 2 and the cutting apparatus 1, and the measurement part 200 is provided in the cutting apparatus 1 may be sufficient.

The present invention is capable of various embodiments and modifications without departing from the broad spirit and scope of the present invention. The above-described embodiments are for explaining the present invention and do not limit the scope of the present invention. In other words, the scope of the present invention is shown not by the embodiments but by the claims. Various modifications within the scope of the claims and within the scope of the equivalent invention are considered to be within the scope of the present invention.

This application is based on Japanese Patent Application No. 2016-235405 filed on Dec. 2, 2016. The specification, claims, and entire drawings of Japanese Patent Application No. 2016-235405 are incorporated herein by reference.

The present invention can be suitably used for a complex machining system and a machining center including an NC lathe and a mechanical grinder.

1, 5, 21 Cutting device, 2, 6, 22 Grinding device, 3 Intermediate processing device, 4, 24, 34 Correction value generation unit, 25 Correction value storage unit, 35 Performance storage unit, 36 Correlation information storage unit, 101, 501 cutting unit, 102, 502 cutting control unit, 200 measuring unit, 201, 601 measuring instrument, 202, 602 measuring control unit, 203, 603 grinding unit, 204, 604 grinding control unit, 213, 225 identification information Reading unit, W, W1, W2, W3, W4, W11, W12, W21 work, WB burrs.

Claims

A first processing device that processes the workpiece based on a target value of the workpiece dimension determined by a design value of the workpiece dimension and a correction value for the design value;
A measuring unit that measures the dimension of the workpiece processed by the first processing apparatus; measures the dimension of the workpiece processed by the measuring unit; and the first processing for the workpiece after processing A second processing device that performs the same or similar processing as the processing performed by the device;
Correction value generation for generating a new correction value using at least one of the measured value of the dimension of the processed workpiece measured by the measurement unit, the design value, and the correction value And comprising
The first processing apparatus processes another workpiece having the same design value as the workpiece based on a target value of a workpiece dimension determined by the design value and a new correction value generated by the correction value generation unit. To
Combined machining system.
The second processing apparatus stores information indicating a measured value of the workpiece dimension, a tolerance upper limit value that is an upper limit value of the tolerance of the workpiece dimension, and a tolerance lower limit value that is a lower limit value of the tolerance. Two machining device storage units, and determining that a dimensional error obtained by subtracting the design value from the measurement value exceeds the tolerance upper limit value, the first machining device performs the first The same or similar processing as the processing performed by one processing device is executed.
The composite processing system according to claim 1.
When the second processing device determines that the dimensional error is less than the tolerance lower limit value, the second processing device discharges the workpiece.
The combined processing system according to claim 2.
The second processing device storage unit further stores information indicating an invariable range that is included in the tolerance with respect to the dimensional error and does not change the correction value;
When the second processing apparatus determines that the dimensional error is included in the tolerance, the correction value generation unit generates a new correction value when the dimensional error is determined to be included in the invariable range. When skipping and determining that the dimensional error is outside the invariable range, a new correction value is generated.
The combined processing system according to claim 2 or 3.
The measurement unit outputs a minimum value of a plurality of measurement values obtained by measuring dimensions in a plurality of directions orthogonal to the rotation axis of the workpiece.
The combined machining system according to any one of claims 1 to 4.
There are a plurality of the first processing devices,
There is at least one second processing apparatus,
Each of the plurality of first processing devices throws the processed workpiece into the at least one second processing device.
The combined machining system according to any one of claims 1 to 5.
There is at least one first processing apparatus,
There are a plurality of the second processing devices,
The at least one first processing device throws the processed workpiece into one of the plurality of second processing devices;
The combined machining system according to any one of claims 1 to 5.
There are a plurality of the first processing devices,
There are as many second processing devices as there are first processing devices,
The plurality of first processing devices sequentially perform processing on the workpiece,
The plurality of second processing devices sequentially measure dimensions on the workpiece processed by the plurality of first processing devices,
The correction value generation unit is measured by a measurement unit included in each of the plurality of second processing apparatuses, and is a measurement value of the dimension of the workpiece processed by the first processing apparatus, and a design value of the dimension of the workpiece From the correction value, a new correction value for each of the first processing devices corresponding to each of the plurality of second processing devices is generated.
The combined machining system according to any one of claims 1 to 5.
A correction value storage unit that stores the correction value and identification information for identifying the workpiece in association with each other;
The first processing apparatus further includes a first identification information reading unit that reads identification information for identifying the workpiece provided in a part of the workpiece,
The second processing apparatus further includes a second identification information reading unit that reads identification information for identifying the workpiece provided in a part of the workpiece,
The correction value generation unit generates a new correction value from the measurement value measured by the measurement unit, the design value, and the correction value, and generates the generated new correction value as the measurement value. In association with the identification information corresponding to, stored in the correction value storage unit,
The combined machining system according to any one of claims 1 to 5.
A correlation information storage unit that stores correlation information indicating a correlation between the number of workpieces inserted into the first machining apparatus and a measurement value of the workpiece dimensions;
The correction value generation unit generates a new correction value based on the measurement value measured by the measurement unit, the design value, the correction value, and the correlation information.
The combined machining system according to any one of claims 1 to 5.
The first processing device is a cutting device,
The second processing device is a grinding device,
The combined machining system according to claim 1.
Machining the workpiece based on a target value of the workpiece dimension determined by a design value of the workpiece dimension and a correction value for the design value;
After measuring the dimensions of the processed workpiece, performing the same or similar processing as the processing performed by the first processing apparatus on the processed workpiece;
A step of generating a new correction value from the measured value of the dimension of the processed workpiece, the design value, and the correction value;
Machining another workpiece having the same design value as that of the workpiece based on a target value of a workpiece dimension determined by the design value and a newly generated correction value.
Compound processing method.
Reading workpiece identification information for identifying the workpiece provided in a part of the workpiece immediately before or immediately after the step of machining the workpiece;
Reading the workpiece identification information provided in a part of the workpiece immediately before or immediately after measuring the dimension of the processed workpiece;
After generating a new correction value from the measurement value, the design value, and the correction value, the generated correction value is associated with the work identification information corresponding to the measurement value in the correction value storage unit. And further comprising the step of storing
The composite processing method according to claim 12.