JP2017138756A - Measurement system, measurement program and control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accelerate a measurement operation.SOLUTION: A measurement system comprises: a control device 1 for creating an instruction based on an instruction for three-dimensional measurement for controlling a three-dimensional measurement machine; a measurement device 2 for executing a three-dimensional measurement operation based on the above mentioned instruction, and being different from the three-dimensional measurement machine; and a control device 1 for making the measurement device 2 execute an operation corresponding to the instruction. The control device 1 has an NC driver 12 for writing a first instruction for making the measurement device 2 execute a first operation in a first area which is an instruction storage area which is provided on a storage part which can be referred by the measurement device 2, and writing a second instruction for making the measurement device 2 execute a second operation which is executed next the first operation, in a second area as an instruction storage area, and the measurement device 2 has an NC controller 21 for executing the first operation based on the first instruction by referring to the storage part, and executing the second operation based on the second instruction after the first operation is completed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a measurement system, a measurement program, and a control method.

  2. Description of the Related Art Conventionally, a measurement system that makes a measurement device different from a coordinate measuring machine execute a three-dimensional measurement operation based on a command for controlling the coordinate measuring machine is known. For example, in Patent Document 1, a probe for three-dimensional measurement is attached to an NC machine tool, and a command for the terminal device to control the three-dimensional measurement machine is changed to a command for operating the NC machine tool. It is described that the NC machine tool performs a three-dimensional measurement operation by converting and causing the NC machine tool to perform an operation corresponding to the converted command via the NC controller.

JP 2014-2654 A

  In the measurement system described in Patent Document 1, the terminal device writes an instruction to operate the NC machine tool in a predetermined storage area, and when the instruction is completed, writes the next instruction in the storage area. The instruction is executed. Therefore, there is a problem that the NC machine tool stops its operation after the NC machine tool completes the operation corresponding to one command until the next command is written in the storage area.

  Therefore, the present invention has been made in view of these points, and an object thereof is to provide a measurement system, a measurement program, and a control method capable of speeding up a measurement operation.

  The measurement system according to the first aspect of the present invention includes a control device that generates a command based on a three-dimensional measurement command for controlling a three-dimensional measuring machine, and a three-dimensional measurement operation based on the command. A measurement system comprising a measurement device different from the coordinate measuring machine, wherein the control device is capable of referring to a first command for causing the measurement device to execute a first operation. For writing to a first area as an instruction storage area, and causing the measurement apparatus to execute a second operation executed after the first operation before the measurement apparatus completes the first operation. An operation control unit that writes a second instruction to a second area as the instruction storage area; and the measurement device performs the first operation based on the first instruction with reference to the storage unit, and After the first operation is completed, Characterized in that it has an operation execution unit for executing the second operation based on the second instruction.

  When the operation based on the command is completed, the operation execution unit writes measurement result information indicating a measurement result corresponding to the operation and operation completion information indicating that the operation is completed to the storage unit, The control unit may acquire the measurement result information when the operation completion information is written.

  When the operation based on the instruction is completed, the operation execution unit, in the instruction storage area in which the instruction is stored, the measurement result information indicating the measurement result corresponding to the operation, and the operation indicating that the operation is completed Completion information may be written.

After acquiring the measurement result information, the operation control unit may newly write a command in the command storage area in which the measurement result information is stored.
When the operation control unit acquires the measurement result information, and there is no instruction to be written to the instruction storage area in which the measurement result information is stored, a state in which the instruction can be written to the instruction storage area May be written in the instruction storage area.

The operation control unit may write the instruction into the instruction storage area in which information indicating that the instruction can be written or the operation completion information is stored.
When the measurement device completes the first operation, the operation control unit writes a third instruction in the first area for causing the measurement device to execute a third operation executed after the second operation. But you can.

  When the instruction is written in the instruction storage area, the operation control unit writes address information indicating an address of the instruction storage area in which the instruction next to the instruction is stored in the instruction storage area. When the operation based on the instruction is completed, the instruction next to the instruction may be identified by referring to the instruction storage area indicated by the address information written in the instruction storage area in which the instruction is stored. .

  When the instruction branches based on the measurement result by the measurement device, the operation control unit pre-writes each of the plurality of instructions after branching into each of the plurality of instruction storage areas, and obtains the measurement result. The address information corresponding to the branch destination instruction may be written in the instruction storage area in which the instruction immediately before branching is stored.

  When the instruction branches based on the measurement result by the measurement device, the operation control unit obtains the measurement result, and then the branch destination instruction is stored in the instruction storage area in which the instruction immediately before branching is stored. It may be written in the instruction storage area corresponding to the stored address information.

  The storage unit has a number of instruction storage areas determined based on a time required for the operation execution unit to execute an operation based on an instruction and a time required for the operation control unit to write an instruction in the instruction storage area. You may have.

  The measurement program according to the second aspect of the present invention generates a command based on a three-dimensional measurement command for controlling the CMM and controls a measurement device different from the CMM based on the command. A first command for causing the measuring device to execute the first operation in a first area as a command storage area of a storage unit that can be referred to by the measuring device; An operation control unit that writes a second instruction for causing the measurement apparatus to execute a second operation to be executed next to the first operation in the second area as the instruction storage area before completing the operation; It is made to function as.

  In the control method according to the third aspect of the present invention, a control device that generates a command based on a three-dimensional measurement command for controlling a three-dimensional measuring machine controls a measuring device different from the three-dimensional measuring device. A first writing step of writing a first instruction for causing the measurement apparatus to execute a first operation in a first area of a storage unit that can be referred to by the measurement apparatus; and Before completing the first operation, a second document for writing a second instruction for causing the measurement apparatus to execute a second operation to be executed next to the first operation in a second area of the storage unit Including a step.

  According to the present invention, it is possible to speed up the measurement operation.

It is a figure which shows the structure of the measurement system which concerns on this embodiment. It is a figure for demonstrating the outline | summary of operation | movement of the measurement system which concerns on this embodiment. It is a figure which shows the example which NC driver uses a some command storage area | region as a ring buffer. It is a figure which shows an example of the relationship between the kind of variable written in the instruction storage area which concerns on this embodiment, and the address allocated to the area | region where each variable is stored. It is a figure which shows the operation example of the measurement system at the time of using the variable shown in FIG. It is a figure for demonstrating the operation | movement which moves a square vertex to a probe. It is a figure for demonstrating operation | movement in the case of measuring the three-dimensional coordinate of a workpiece | work. It is a figure which shows the change of the value of the variable memorize | stored in the instruction | command storage area. It is a figure following FIG. 8A. It is a figure following FIG. 8B.

[Configuration of measuring system S]
FIG. 1 is a diagram illustrating a configuration of a measurement system S according to the present embodiment.
The measurement system S includes a control device 1 and a measurement device 2. The control device 1 is a device capable of generating a command (hereinafter referred to as a machine tool command) based on a command for controlling the CMM (hereinafter also referred to as a 3D measurement command). Reference numeral 2 denotes an NC machine tool. The measurement system S is a system that causes the measurement device 2 to perform a three-dimensional measurement operation based on a machine tool command generated by the control device 1. The machine tool command is constituted by, for example, a common variable for operating the measuring device 2.

  The control device 1 is a computer including a control unit such as a CPU and a storage unit such as a hard disk and a memory. The control device 1 includes a data processing unit 11 and an NC driver 12 as an operation control unit, and communicates with the measurement device 2 by a communication method such as RS-232C or TCP / IP. The control device 1 may communicate with the measurement device 2 using a communication API or class module prepared by each manufacturer. The control device 1 operates as the data processing unit 11 and the NC driver 12 by executing a program stored in the storage unit.

  The data processing unit 11 receives from the user the content of measurement to be performed by the measurement device 2. For example, the data processing unit 11 displays on the display of the control device 1 a screen for accepting settings related to the operation content to be executed by the measurement device 2 and acquires setting information input by the user. The data processing unit 11 generates a 3D measurement command based on the acquired setting information, and notifies the NC driver 12 of the generated 3D measurement command. In addition, the data processing unit 11 displays the measurement result acquired from the measuring device 2 via the NC driver 12 on the display of the control device 1.

  The NC driver 12 converts the three-dimensional measurement command into a machine tool command for controlling the measurement device 2 and transmits the command to the measurement device 2. Further, the NC driver 12 acquires a result measured by the measuring device 2 and notifies the data processing unit 11 of the acquired measurement result. When the control device 1 includes the NC driver 12, the user of the control device 1 controls the measurement device 2 using the control device 1 used for controlling the coordinate measuring machine, and performs three-dimensional measurement using the measurement device 2. It can be carried out.

  The NC driver 12 generates a machine tool command for executing various operations included in the measurement device 2 based on the three-dimensional measurement command, and stores the generated machine tool command to which the measurement device 2 can refer. Store in the instruction storage area in the department. For example, the NC driver 12 stores the machine tool instruction in the instruction storage area by changing the value of a variable to which a variable number corresponding to each area included in the instruction storage area is assigned. The NC driver 12 stores the next instruction in the instruction storage area before the measuring apparatus 2 completes the operation corresponding to one instruction. As a result, the measurement system S shortens the time from when the measurement device 2 completes the operation corresponding to one command to the execution of the operation corresponding to the next command, thereby speeding up the measurement operation in the measurement device 2. Can be

  The NC driver 12 acquires the result of measurement by the measuring device 2, converts the acquired measurement result into control device data, and inputs the converted control device data to the data processing unit 11. The NC driver 12, for example, in response to receiving a notification from the measuring device 2 indicating that the measurement corresponding to one command is completed, in a part of the area where the command executed by the measuring device 2 is stored. Get stored measurement results.

The measuring apparatus 2 includes an NC controller 21 as an operation execution unit and an NC machine tool 22.
The NC controller 21 includes a control unit such as a CPU, a storage unit such as a hard disk and a memory, a drive control circuit for operating the NC machine tool 22, various registers, and a loop counter, and controls the operation of the NC machine tool 22. It is a computer.

An NC program executed by the CPU is stored in the storage unit of the NC controller 21. The CPU of the NC controller 21 controls the driving of the NC machine tool 22 by executing an NC program. For example, the NC controller 21 communicates with the NC driver 12 via an API (Application Programming Interface) to acquire a machine tool command from the NC driver 12 or notify the NC driver 12 of a measurement result. .
When the NC controller 21 has the same configuration as a general computer for front end, the NC program has at least a part of the program executed in the control device 1 and the NC driver 12. It may be.

  The NC machine tool 22 is equipped with a probe for performing a three-dimensional measurement, and performs a three-dimensional measurement of a workpiece placed on the NC machine tool 22 under the control of the NC controller 21. The NC controller 21 stores, for example, the three-dimensional coordinates of the probe as a measurement result of the three-dimensional measurement in a storage unit that can be referred to by the NC driver 12. Thereby, the control apparatus 1 can acquire the measurement result memorize | stored in the said memory | storage part.

[Outline of operation of measurement system S]
FIG. 2 is a diagram for explaining the outline of the operation of the measurement system S according to the present embodiment.
First, the data processing unit 11 receives from the user the content of measurement to be performed by the NC machine tool 22 (S1). The data processing unit 11 generates a three-dimensional measurement command based on the received measurement content (S2).

  Subsequently, the NC driver 12 analyzes the three-dimensional measurement command and converts the command into a machine tool command that can be executed by the NC machine tool 22 of the measuring device 2 (S3). For example, the NC driver 12 disassembles the operation corresponding to the three-dimensional measurement command into one or more operations (for example, positioning, measurement, A / C axis rotation, B axis rotation, etc.) that the NC machine tool 22 can execute. Then, a machine tool command corresponding to each of the one or more operations is generated.

  Subsequently, the NC driver 12 is used for the machine tool generated in S3 in any of a plurality of command storage areas of a storage unit (for example, a storage unit provided in the NC controller 21) that can be referred to by the measuring device 2. An instruction is written (S4). Here, the storage unit provided in the NC controller 21 has the number of times determined based on the time required for the NC controller 21 to execute the operation based on the command and the time required for the NC driver 12 to write the command. It has an instruction storage area. For example, when the time required for the NC driver 12 to write a command in the command storage area is 200 ms at the maximum, and the time required for executing the operation based on the NC controller 21 is an average of 10 ms, the memory unit includes 20 The above instruction storage area is preferably provided. In this way, the control device 1 can increase the possibility that the operation will be executed without delay even when a command write delay occurs.

  Specifically, the NC driver 12 writes a first command, which is a machine tool command for causing the measuring apparatus 2 to execute the first operation, to the first area in the instruction storage area, and the measuring apparatus 2 performs the first operation. Before the operation is completed, the second instruction, which is a machine tool instruction for causing the measuring device 2 to execute the second operation executed after the first operation, is written in the second area in the instruction storage area. .

  The NC controller 21 controls the operation of the NC machine tool 22 based on the machine tool command written in the command storage area by executing the NC program (S5). When the operation is completed, the NC controller 21 writes operation completion information indicating that the operation is completed in a command storage area provided in the storage unit of the NC controller 21. Thereby, the NC driver 12 is notified that the operation is completed. Further, when the operation of the NC machine tool 22 is a measurement operation, the NC controller 21 writes measurement result information indicating the measurement result in a command storage area provided in the storage unit of the NC controller 21.

  For example, the NC controller 21 causes the NC machine tool 22 to continuously execute a plurality of operations in the following procedure. First, the NC controller 21 causes the NC machine tool 22 to execute a first operation based on the first command with reference to the command storage area. When the NC machine tool 22 completes the first operation based on the first command, the NC controller 21 receives the measurement result information corresponding to the first operation and the operation completion information indicating that the first operation is completed. The instruction is stored in the instruction storage area where the instruction is stored, and then the NC machine tool 22 is caused to execute the second operation based on the second instruction. When the NC machine tool 22 completes the second operation based on the second command, the NC controller 21 receives the measurement result information corresponding to the second operation and the operation completion information indicating that the second operation is completed. Write to the instruction storage area where instructions are stored. In this way, the NC controller 21 can effectively use the limited memory area by writing the measurement result information in the instruction storage area after executing the instruction.

  When the operation of the NC machine tool 22 is a measurement operation and the operation completion information is written in the command storage area, the NC driver 12 acquires the measurement result information written in the command storage area (S6), and performs the measurement. The result information is converted into measurement result data for the control device (S7).

  Subsequently, the data processing unit 11 acquires the measurement result data for the control device converted by the NC driver 12, and stores it in the storage medium or displays it on the display (S8). The timing at which the data processing unit 11 acquires the measurement result data is arbitrary, and the measurement result data may be acquired after the measurement based on all the three-dimensional measurement commands is completed, and before all the measurements are completed. The measurement result data may be acquired, and the measurement results may be sequentially displayed based on the acquired data.

  In S4 described above, the NC driver 12 acquires the measurement result information when there is a machine tool command not written in the command storage area among the plurality of machine tool commands to be executed by the NC controller 21. Later, a new machine tool command can be written in the command storage area in which the measurement result information is stored. By doing so, the measurement system S can share the instruction storage area as an area for writing the measurement result information and the machine tool instruction, so that the instruction storage area can be used effectively.

  In addition, when the NC machine tool 22 of the measuring device 2 completes the first operation, the NC driver 12 causes the NC machine tool 22 of the measuring device 2 to execute a third operation executed after the second operation. A plurality of instruction storage areas can be used as a ring buffer by writing three instructions to a first area that is an instruction storage area in which the first instruction corresponding to the first operation is stored.

  FIG. 3 is a diagram illustrating an example in which the NC driver 12 uses a plurality of instruction storage areas as a ring buffer. In the example shown in FIG. 3, it is assumed that a first area, a second area, a third area,..., An (n−1) th area, and an nth area are provided as instruction storage areas. However, n shall be an integer greater than or equal to 5.

  First, the NC driver 12 writes a first command for executing the first operation in the first area. Similarly, the NC driver 12 has a second command for causing the second region to execute the second operation, a third command for causing the third region to execute the third operation,. The nth instruction for executing the operation is sequentially written. After the operation corresponding to the first instruction written in the first area is performed, the NC driver 12 writes the (n + 1) th instruction for executing the (n + 1) th operation in the first area. The first area is reused. As described above, the measurement system S can repeatedly use one instruction storage area as an area for storing a plurality of instructions, so that the number of variables used in the plurality of instructions can be used in the measurement apparatus 2. Even when the maximum number of possible variables is exceeded, the plurality of instructions can be continuously executed by the measuring apparatus 2.

[Variables stored in the instruction storage area]
Next, machine tool instructions stored in the instruction storage area will be described.
In the present embodiment, the NC driver 12 uses a value of an operation flag corresponding to an operation that can be executed by the NC machine tool 22 or a control value used for controlling the operation (for example, a probe destination) as a machine tool command. A command including a variable value such as a coordinate value or a probe moving speed is generated. In the instruction storage area, an area for storing the value of the variable corresponding to the machine tool instruction is determined, and the NC driver 12 writes the generated plurality of values in the area corresponding to each of the plurality of variables. In the following description, information for specifying an area corresponding to a variable is referred to as an address. The address corresponds to, for example, a variable number assigned to the variable.

FIG. 4 is a diagram showing an example of the relationship between the types of variables written in the instruction storage area according to the present embodiment and the addresses assigned to the areas in which the variables are stored.
As shown in FIG. 4A, the instruction storage area is provided with a plurality of areas for storing a plurality of machine tool instructions at a time. In FIG. 4A, the first region and the second region are shown among the plurality of regions. The first area corresponds to addresses # 900 to # 917, and the second area corresponds to addresses # 950 to # 967.

  Information for controlling the measuring device 2 and information indicating the state of the measuring device 2 are stored in each of the plurality of regions. For example, addresses # 903 and # 953 are provided with an operation flag area for storing the value of an operation flag variable indicating the type of operation to be executed by the NC machine tool 22 and the state of the NC machine tool 22.

  FIG. 4B is a table showing the relationship between the value of the operation flag variable and the operation content. For example, the value “1” of the operation flag corresponds to the probe positioning process in the measurement apparatus 2. The value “2” of the operation flag corresponds to the workpiece measurement process in the measurement apparatus 2. Further, the value “5” of the operation flag is a value indicating that the measuring device 2 is in the operation end state.

  Further, as shown in FIG. 4A, the variables include variables corresponding to the coordinate values of the movement destination of the probe (for example, variables stored in the area of addresses # 900 to # 902), and the measurement apparatus 2. A next instruction designation variable (for example, a variable stored in the area of address # 914) indicating the address of the instruction storage area where the instruction to be executed next is stored is provided.

  In the present embodiment, when writing information corresponding to a machine tool instruction in the instruction storage area, the NC driver 12 measures the measuring device next to the instruction to be written in the area for storing the next instruction designation variable in the instruction storage area. 2 writes the address of the instruction storage area where the instruction to be executed is stored. For example, the NC driver 12 writes a minimum address among a plurality of addresses corresponding to an instruction storage area storing an instruction to be executed next. When the operation based on one machine tool command is completed, the NC controller 21 refers to the address corresponding to the next command designation variable, and identifies the command next to the command for which the operation has been completed. In this way, the NC driver 12 can notify the NC controller 21 of which instruction storage area among the plurality of instruction storage areas the instruction to be executed next is stored.

  The address of the operation flag variable stored in the instruction storage area, the next instruction designation variable, and the variable storing the control value corresponding to various operations differs depending on the specification of the NC program prepared by the manufacturer of the NC machine tool 22. Therefore, the NC driver 12 stores information indicating the address corresponding to each manufacturer, specifies the address stored in the instruction storage area based on the specifications of each manufacturer's NC program, Or write a machine tool command to the variable. Thereby, the NC driver 12 can write the command for machine tools corresponding to the NC machine tool 22 of each manufacturer.

[Detailed operation of measurement system S]
Subsequently, the detailed operation of the measurement system S will be described. FIG. 5 is a diagram illustrating an operation example of the measurement system S when the variables illustrated in FIG. 4 are used.
As described above, when the data processing unit 11 notifies the NC driver 12 of the three-dimensional measurement command (S2), the NC driver 12 analyzes the three-dimensional measurement command and converts it into one or more machine tool commands. Conversion is performed (S3). The NC driver 12 controls the operation flag value corresponding to the machine tool instruction generated in S2 and the operation control in any one of the plurality of instruction storage areas of the storage unit provided in the NC controller 21. The control value used for is written (S4).

  Here, as the information indicating that the instruction can be written in all of the plurality of instruction storage areas when the control of the measuring device 2 is started, for example, the instruction storage area is in an initial state. Information is stored. The NC driver 12 writes a machine tool command in a command storage area in which information indicating the initial state is stored.

  For example, it is assumed that the NC driver 12 writes, in the first area, a command that is first executed by the measuring device 2 among the machine tool commands generated in S2. The NC driver 12 stores “2” as the value of the operation flag in the area of the address # 903 corresponding to the operation flag variable, and sets the X coordinate value, the Y coordinate value, and the Z coordinate value of the movement destination. These are stored in the areas of addresses # 900, # 901, and # 902, respectively.

  Further, the NC driver 12 stores a plurality of machine tool instructions in each of a plurality of instruction storage areas. Specifically, when n instruction storage areas are provided, the NC driver 12 uses the second area for executing the second operation in the second area and the third area for executing the third operation. The nth instruction for executing the nth operation is sequentially written in the third instruction,..., The nth area. The instruction corresponding to the operation after the nth operation is written after the operation corresponding to the instruction stored in the first area is executed.

  The NC controller 21 executes a monitoring process for looping and monitoring the value of the operation flag variable stored in the first area by executing the NC program (S51). When the value of the operation flag variable is any of 1 to 4 or 7, the NC controller 21 specifies an operation to be executed by the NC machine tool 22 based on the information shown in FIG. When the value of the operation flag variable is 1, the NC controller 21 executes the probe positioning operation (S52a), and when the value of the operation flag variable is 2, the NC controller 21 executes the workpiece measurement operation (S52b). When the value of the operation flag variable is 3, the A / C axis rotation operation is executed (S52c). When the value of the operation flag variable is 4, the B axis rotation operation is executed (S52d).

  Here, when measuring the workpiece, the NC machine tool 22 performs measurement using a block skip function provided in advance in the NC machine tool 22. The block skip function is a function for stopping the subsequent movement of the probe and moving to the next process when the probe contacts an object or the like while moving the probe from the first position to the second position. When the NC machine tool 22 contacts an object or the like with the probe, it outputs a skip signal. The NC controller 21 refers to the state data storage area (address # 5061 to # 5063) that stores the current position of the probe in response to the detection of the skip signal, and is stored in the state data storage area. The X-coordinate value, the Y-coordinate value, and the Z-coordinate value indicating the corresponding position are stored in the area of addresses # 904 to # 906 where the measurement results are stored (S53).

  When the operation of any of S52a, S52b, S52c, and S52d based on the value of the operation flag variable is completed in the NC machine tool 22, the NC controller 21 sets the address # 903 corresponding to the operation flag variable in the first area. “5” is written in the area as operation completion information indicating that the operation has been completed (S54).

  When the operation based on one machine tool instruction is completed, the NC controller 21 stores an instruction storage area indicated by an address written in an area in which an instruction storage variable in the instruction storage area in which the instruction is stored is stored. To identify the next instruction. For example, the NC controller 21 specifies that the machine tool command to be executed next is stored in the second area based on the address stored in the area of the address # 914 in the first area. Then, the NC controller 21 re-executes the process of S41. When re-executing the process of S41, the NC controller 21 monitors the operation flag variable stored in the area of address # 953 in the second area, and executes the subsequent processes.

  The NC driver 12 acquires the value as measurement result information in response to the value indicating the measurement result being stored in the area for storing the measurement result (S6), and uses the measurement result information as the measurement result for the control device. Data is converted (S7).

  The NC driver 12 writes an instruction temporarily stored in the storage unit of the control device 1 into an instruction storage area in which operation completion information is stored. For example, the NC driver 12 uses, as an operation flag variable, an (n + 1) th instruction that is an instruction executed first among one or more machine tool instructions temporarily stored in the storage unit of the control device 1. The operation completion information “5” is written in the first area.

  Further, when the NC driver 12 acquires the measurement result information, when there is no machine tool instruction to be written to the instruction storage area in which the measurement result information is stored, the NC driver 12 has a machine tool in the instruction storage area. The information indicating that the instruction can be written is written in the instruction storage area. For example, the NC driver 12 writes information indicating that the instruction storage area is in the initial state in the instruction storage area. In this way, when a new workpiece measurement or the like is performed, the measurement operation can be promptly advanced without setting the state of the instruction storage area to the initial state.

  Further, when the instruction branches based on the measurement result by the measuring device 2, the NC driver 12 writes each of the plurality of instructions after branching in each of the plurality of instruction storage areas in advance, and acquires the measurement result. The address corresponding to the branch destination instruction may be written in the instruction storage area in which the instruction immediately before branching is stored. By doing in this way, the control apparatus 1 can make the measuring apparatus 2 execute the command after a branch rapidly.

  In addition, when an instruction branches based on the measurement result by the measuring device 2, the NC driver 12 obtains the measurement result and then places the branch destination instruction in the instruction storage area in which the instruction immediately before branching is stored. You may make it write in the instruction storage area corresponding to the stored address. In this way, the control device 1 does not need to write all instructions corresponding to a plurality of branches to the instruction storage area, so even if the capacity of the instruction storage area is limited, Can be used.

[Operation Example 1]
Next, an actual operation example will be described. FIG. 6 is a diagram for explaining the operation of sequentially moving the probe mounted on the NC machine tool 22 of the measuring apparatus 2 to the positions P1 to P4 of the square apexes. Here, the first command to move the probe from position P1 to position P2, the second command to move from position P2 to position P3, the third command to move from position P3 to position P4, and the position P4 to position P1 are moved in this order. An example in which the fourth instruction is executed in order will be described.

  In the example shown in FIG. 6, the NC controller 21 stores a first area (address # 500 to # 504) in which the first instruction is stored and a second instruction so that four machine tool instructions can be stored at a time. Second area (addresses # 505 to # 509), a third area (address # 510 to # 514) in which the third instruction is stored, and a fourth area (address # 515 to # 514) in which the fourth instruction is stored. 519) of four instruction storage areas. The next instruction designation variable is written in the areas of the addresses # 504, # 509, # 514, and # 519. For example, since the value stored in the area of the address # 504 is 505, the NC controller 21 causes the NC machine tool 22 to execute the first instruction, and then executes the second instructions from the addresses # 505 to # 509. Can be executed.

  At the address # 500, an operation flag variable is stored. Addresses # 501 to # 503 store the X coordinate, Y coordinate, and Z coordinate values of the movement destination, respectively. The address # 504 stores a next instruction designation variable. In the second area to the fourth area, the operation flag variable, the variable for storing the value of the three-dimensional coordinates of the movement destination, and the next instruction designation variable are stored in the same order as the variables stored in the first area. Yes.

  In the example illustrated in FIG. 6, any one of “1” for moving the probe, “2” for measuring the three-dimensional coordinates, and “5” corresponding to the operation completion information of the measuring device 2 as the operation flag variable of the measuring device 2. Is stored. In addition, as the next instruction designation variable, the address of the first variable stored in the instruction storage area in which the machine tool instruction to be executed next is stored is stored.

First, the NC driver 12 sets the value of the operation flag, the value of the three-dimensional coordinate, and the value of the next command designation variable corresponding to the four machine tool commands in the first region, the second region, the third region, and the fourth region. Write to.
The NC controller 21 controls the NC machine tool 22 based on the value of the variable stored in the first area, and moves the probe from the position P1 to the position P2. When the operation of moving the probe to the position P2 is completed, the NC controller 21 rewrites the value of the operation flag variable stored in the first area to “5” and also sets the next command designation variable stored in the first area. The head address of the area where the machine tool instruction to be executed next is stored is specified as “# 505”. As a result, the NC controller 21 can execute the second command stored in the second area. The NC driver 12 writes information indicating the initial state in the first area because there is no machine tool command to be written to the first area. For example, the NC driver 12 executes an initialization process in which “0” is written in all areas of the first area.

  The NC controller 21 moves the probe from the position P2 to the position P3 based on the information stored in the second area in the same procedure, and positions the probe based on the information stored in the third area. The probe is moved from P3 to position P4, and then the probe is moved from position P4 to position P1 based on the information stored in the fourth area.

[Operation example 2]
Next, an operation example for measuring the three-dimensional coordinates of the ring-shaped workpiece will be described. FIG. 7 is a diagram for explaining the operation when measuring the three-dimensional coordinates of the workpiece. In the example illustrated in FIG. 7, the data processing unit 11 receives a setting for automatically measuring three-dimensional coordinates of four points on the workpiece from the user. In the example shown in FIG. 7, the measurement is performed using the four instruction storage areas (first area to fourth area) shown in FIG.

  The NC driver 12 converts the three-dimensional measurement command acquired from the data processing unit 11 into a machine tool command. As shown in (1) to (8) of FIG. 7, the NC driver 12 converts the command into eight machine tool commands (first command to eighth command).

The first command is a command for executing an operation of moving the probe to the position P1 inside the workpiece. The second command is a command for executing an operation of measuring the coordinates of the position C1 on the workpiece by moving the probe from the position P1 to the position P2 outside the workpiece and bringing the probe into contact with the workpiece.
The third command is a command for executing an operation of moving the probe to the position P3. The fourth command is a command for executing an operation of measuring the coordinates of the position C2 on the workpiece by moving the probe from the position P3 to the position P4.

The fifth command is a command for executing an operation of moving the probe to the position P5. The sixth command is a command for executing an operation of measuring the coordinates of the position C3 on the workpiece by moving the probe from the position P5 to the position P6.
The seventh command is a command for executing an operation of moving the probe to the position P7. The eighth command is a command for executing an operation of measuring the coordinates of the position C4 on the workpiece by moving the probe from the position P7 to the position P8.

  Hereinafter, the operations of the NC driver 12 and the NC controller 21 when performing the measurement operation will be described with reference to the states of variables stored in the four instruction storage areas. 8A to 8C are diagrams showing the states of variables stored in the four instruction storage areas. In addition, the part changed from the previous state shall be shown by a color (gray) different from the part which has not changed from the previous state.

It is assumed that the values of the variables stored in the four instruction storage areas are in the state shown in FIG. 8A (a) before measurement.
First, the NC driver 12 writes the value of the operation flag corresponding to the first command to the fourth command, the value of the three-dimensional coordinate, and the value of the next command designation variable from the first region to the fourth region. As a result, the value stored in each address is in the state shown in FIG. 8A (b).

  First, the NC controller 21 refers to the variable stored in the first area, executes the first command, and moves the probe to the position P1. When the operation of moving to the position P1 is completed, the NC controller 21 rewrites the value of the operation flag variable stored in the first area to “5”. Thereby, the value of each variable will be in the state shown to (c) of FIG. 8A.

  Since there is a fifth instruction that is not stored in the instruction storage area, the NC driver 12 corresponds to the fifth instruction after the value of the operation flag variable stored in the first area changes to “5”. Write the value to the first area. Since the NC controller 21 refers to the value of the next command designation variable stored in the first area, the NC driver 12 changes the fifth command after the NC controller 21 executes the next second command. The corresponding value is written in the first area. Also in the following description, after the NC controller 21 refers to the value of the next command designation variable in each area, the NC driver 12 rewrites the value of the variable in the area.

  The NC controller 21 refers to the value of the next instruction designation variable stored in the first area, and identifies the head address corresponding to the second instruction to be executed next as “# 505”. Thereby, the NC controller 21 executes the second command with reference to the variable stored in the second area. When the probe contacts the workpiece at the position C1 while the probe moves to the position P2, the NC controller 21 stores the value of the three-dimensional coordinates indicating the position of the probe at the time of contact in the area for storing the measurement result. Here, the NC controller 21 writes the value of the three-dimensional coordinate indicating the position of the probe in the area of the addresses # 506, # 507, and # 508 for storing the value of the three-dimensional coordinate of the destination position P2. Thereby, the value of each variable will be in the state shown to (d) of FIG. 8A.

The NC driver 12 refers to the areas of the addresses # 506, # 507, and # 508 where the measurement results are stored in response to the value of the operation flag variable stored in the second area being changed to “5”. To obtain measurement result information.
Since there is a sixth instruction that is not stored in the instruction storage area, the NC driver 12 corresponds to the sixth instruction after the value of the operation flag variable stored in the second area changes to “5”. Write the value to the second area.

Thereafter, in the same procedure, the NC controller 21 executes the third to fifth instructions, and the NC driver 12 writes values corresponding to the seventh and eighth instructions in the third and fourth areas. 8B (e) to (g), the value of each region transitions.
In the state shown in FIG. 8B (g), the NC controller 21 refers to the value of the next instruction designation variable stored in the first area, and sets the address of the first variable corresponding to the sixth instruction to be executed next to “ # 505 ". As a result, the NC controller 21 executes the sixth instruction with reference to the variable stored in the second area. If the NC controller 21 touches the workpiece at the position C3 while the probe is moving to the position P6, the NC controller 21 stores the three-dimensional coordinate values indicating the position of the probe at the time of contact, and addresses # 506 and # 507 for storing the measurement results. , # 508. Thereby, the value of each variable will be in the state shown to (h) of FIG. 8B.

  In the state shown in FIG. 8B (g), since there are no machine tool instructions that are not stored in the instruction storage area, the NC driver 12 determines that the value of the operation flag variable stored in the first area is When a predetermined time elapses after changing to “5”, “0” is written in the first area, and the variables stored in the first area are initialized. Therefore, in (h) of FIG. 8B, the values of the areas of the addresses # 500 to # 504 are 0.

  Thereafter, the NC controller 21 executes the seventh instruction and the eighth instruction in the same procedure, and the values of the respective regions transition as shown in FIGS. 8C (i) to 8C (k). The NC controller 21 initializes the instruction storage area by sequentially writing 0 in the second area, the third area, and the fourth area. With the above procedure, eight instructions can be executed in succession using the four instruction storage areas.

[Effect in this embodiment]
As described above, in the measurement system S according to the present embodiment, the NC driver 12 of the control device 1 stores the first command for causing the measurement device 2 to execute the first operation. The first operation area is stored in the first area as the instruction storage area, and before the measurement apparatus 2 completes the first operation, the measurement apparatus 2 executes a second operation to be executed next to the first operation. Two commands are written in the second area as the instruction storage area, and the NC controller 21 of the measuring apparatus 2 executes the first operation based on the first instruction with reference to the storage unit, and the first operation is completed after the first operation is completed. A second operation based on two instructions is executed.

  By doing in this way, the measurement system S shortens the time from when the measurement apparatus 2 completes the operation corresponding to one command to the execution of the operation corresponding to the next command. Measurement operation can be speeded up.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Control apparatus 11 Data processing part 12 NC driver 2 Measuring apparatus 21 NC controller 22 NC machine tool S Measuring system

Claims (13)

A control device that generates a command based on a three-dimensional measurement command for controlling the three-dimensional measurement device, and a measurement device that performs a three-dimensional measurement operation based on the command and is different from the three-dimensional measurement device. A measuring system,
The controller is
A first instruction for causing the measurement apparatus to execute the first operation is written in a first area as an instruction storage area of a storage unit that can be referred to by the measurement apparatus, and the measurement apparatus completes the first operation. Before, having an operation control unit that writes a second command for causing the measurement apparatus to execute a second operation executed next to the first operation in the second region as the command storage region,
The measuring device is
An operation execution unit configured to execute the first operation based on the first instruction with reference to the storage unit and to execute the second operation based on the second instruction after the first operation is completed;
A measurement system characterized by that. When the operation based on the command is completed, the operation execution unit writes measurement result information indicating a measurement result corresponding to the operation and operation completion information indicating that the operation is completed in the storage unit,
The operation control unit acquires the measurement result information when the operation completion information is written.
The measurement system according to claim 1. When the operation based on the instruction is completed, the operation execution unit, in the instruction storage area in which the instruction is stored, the measurement result information indicating the measurement result corresponding to the operation, and the operation indicating that the operation is completed Write completion information and
The measurement system according to claim 1 or 2, wherein The operation control unit writes a new command in the command storage area in which the measurement result information is stored after acquiring the measurement result information.
The measurement system according to claim 3. When the operation control unit acquires the measurement result information, and there is no instruction to be written to the instruction storage area in which the measurement result information is stored, a state in which the instruction can be written to the instruction storage area Write the information indicating that it is in the instruction storage area,
The measurement system according to claim 4. The operation control unit writes information in the instruction storage area in which the information indicating that the instruction can be written or the operation completion information is stored.
The measurement system according to any one of claims 3 to 5, wherein: When the measurement device completes the first operation, the operation control unit writes a third instruction for causing the measurement device to execute a third operation executed after the second operation in the first area. ,
The measurement system according to any one of claims 1 to 6, wherein: When the operation control unit writes an instruction to the instruction storage area, the operation control unit writes address information indicating an address of the instruction storage area in which the instruction next to the instruction is stored in the instruction storage area,
When the operation based on the instruction is completed, the operation execution unit refers to the instruction storage area indicated by the address information written in the instruction storage area in which the instruction is stored, and specifies the instruction next to the instruction To
The measurement system according to claim 1, wherein: When the instruction branches based on the measurement result by the measurement device, the operation control unit pre-writes each of the plurality of instructions after branching into each of the plurality of instruction storage areas, and obtains the measurement result. Write the address information corresponding to the branch destination instruction to the instruction storage area in which the instruction immediately before branching is stored.
The measurement system according to claim 8. When the instruction branches based on the measurement result by the measurement device, the operation control unit obtains the measurement result, and then the branch destination instruction is stored in the instruction storage area in which the instruction immediately before branching is stored. Write to the instruction storage area corresponding to the stored address information,
The measurement system according to claim 8. The storage unit has a number of instruction storage areas determined based on a time required for the operation execution unit to execute an operation based on an instruction and a time required for the operation control unit to write an instruction in the instruction storage area. Having
The measurement system according to any one of claims 1 to 10, wherein: A computer that generates a command based on a three-dimensional measurement command for controlling the three-dimensional measuring machine, and controls a measuring device different from the three-dimensional measuring device based on the command,
A first instruction for causing the measurement apparatus to execute the first operation is written in a first area as an instruction storage area of a storage unit that can be referred to by the measurement apparatus, and the measurement apparatus completes the first operation. An operation control unit that writes a second command for causing the measurement apparatus to execute a second operation to be executed next to the first operation in a second area as the instruction storage area;
Measurement program characterized by functioning as A control device that generates a command based on a three-dimensional measurement command for controlling a three-dimensional measuring machine is a control method for controlling a measuring device different from the three-dimensional measuring device,
A first writing step of writing a first instruction for causing the measurement apparatus to execute a first operation in a first area of a storage unit that can be referred to by the measurement apparatus;
Before the measurement device completes the first operation, the storage unit has a second area for causing the measurement device to execute a second operation to be executed after the first operation. A second writing step for writing to
A control method characterized by comprising: