A Method, System, and Program Product for Constructing a Digital Workshop for Electronic Equipment

Abstract

The present invention discloses a method, a system and a program product for constructing a digital workshop of electronic equipment, which relates to the field of advanced manufacturing and is used to improve the production efficiency of electronic equipment. The present invention constructs activities in the design domain, the execution domain, the control domain and the service domain that serve the integrated business of electronic equipment; among them, the design domain is responsible for process design and workshop planning; the execution domain is responsible for plan management, resource management, warehousing and logistics management, process execution management and process quality management; the control domain is responsible for data management and situation management; the service domain is responsible for performance evaluation and prediction optimization. The present invention improves the efficiency of integrating complex electronic equipment, improves the resource utilization rate, and improves the effectiveness of production cycle control.

Description

Technical Field

[0001] The present invention relates to the field of advanced manufacturing, and in particular to a method for constructing a digital workshop of electronic equipment, a digital workshop system of electronic equipment, and a computer program product. Background Art

[0002] With the continuous development of manufacturing technologies, it has become an inevitable choice for most manufacturing enterprises in the new round of competition to reconstruct manufacturing operations and build digital production workshops by using advanced technologies such as the Internet of Things, big data, cloud computing, and artificial intelligence. Currently, most of the construction and practice of digital workshops mainly focus on the machining industry. Such manufacturing workshops have the characteristics of few product types, large batches, stable orders, simple process routes, and fixed product states. The manufacturing resources are mainly large machine tools and equipment, with a single type and a small number, a simple material structure and a relatively small quantity, and the difficulty of workshop scheduling and control is relatively small. The construction of digital workshops in the machining industry mainly focuses on aspects such as the construction of 3D models of parts, the upgrade of machine tools and equipment, the transformation of workshop information systems, the upgrade of logistics systems, and the establishment of digital twin systems.

[0003] However, electronic equipment has the characteristics of high integration density, integration of software and hardware, and rapid update of technical status. Its manufacturing has the characteristics of multiple varieties, small batches, customization, rigid planning nodes, and unfixed cycles. The integration process of electronic equipment includes the process from underlying components to PCB boards, components, modules, sub-assemblies, sub-systems, and the whole machine system. The material structure is complex, with a large variety and quantity; the integration processes are mainly debugging and testing, and the logical relationships between processes are complex and diverse, and the process routes are in a network structure; the manufacturing resources are mainly general-purpose test instruments and equipment, with a large variety and quantity, and need to be combined and used, and the configuration strategy is complex. It can be seen that the integration process of electronic equipment has a high degree of uncertainty and complexity. In this case, it is difficult to solve the uncertainty problem in the integration process of electronic equipment and cope with the complexity problems of resource control and scheduling involved in the integration process of electronic equipment by using the above-mentioned digital workshop construction methods in the machining industry. Summary of the Invention

[0004] The object of the present invention is to provide a method, system and program product for constructing a digital workshop of electronic equipment to cope with the uncertainty and complexity in the integration process of electronic equipment and improve the production efficiency of electronic equipment in view of all or part of the above problems.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A method for constructing a digital workshop of electronic equipment, which includes:

[0007] Activities for constructing the design domain, execution domain, control domain, and service domain serving the electronic equipment integration business; among which:

[0008] The design domain is responsible for two business activities: process design and workshop planning;

[0009] The execution domain is responsible for five business activities: plan management, resource management, warehousing and logistics management, process execution management, and process quality management;

[0010] The control domain is responsible for two business activities: data management and situation management;

[0011] The service domain is responsible for two business activities: performance evaluation and prediction optimization.

[0012] In addition, the present invention also provides an electronic equipment digital workshop system, which is constructed by the above-mentioned electronic equipment digital workshop construction method.

[0013] Furthermore, the present invention also provides a computer program product, including a computer program, which, when run by a processor, can execute the above-mentioned electronic equipment digital workshop construction method.

[0014] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are:

[0015] In view of the characteristics of complex integration processes and a wide variety of material structures in electronic equipment, the present invention plans and constructs a digital workshop serving the electronic equipment integration business from four aspects: the design domain, execution domain, control domain, and service domain. It hierarchically plans the production plan from top to bottom, and at the same time plans in the dimensions of resources and space to cooperate with the production plan, efficiently planning the production resources macroscopically, and realizing the full-process planning and control of the electronic equipment integration process. Each step is carried out step by step with clear logic, which can clearly guide each link and each process of the integration, strictly plan and control the production cycle and resource scheduling, improve the efficiency of complex electronic equipment integration, improve the resource utilization rate, and improve the effectiveness of production cycle control. Description of the Drawings

[0016] The present invention will be described by way of examples with reference to the drawings, where:

[0017] Figure 1 is a flowchart of the electronic equipment digital workshop construction method provided by an embodiment of the present application.

[0018] Figure 2 is a signal flow diagram of four business domains in the electronic equipment digital workshop provided by an embodiment of the present application.

[0019] Figure 3It is a flowchart for constructing a process model in an embodiment of the present application.

[0020] Figure 4 It is a process diagram constructed in an embodiment of the present application.

[0021] Figure 5 It is a structural diagram of a resource model in an embodiment of the present application.

[0022] Figure 6 It is a three-level task decomposition flowchart in an embodiment of the present application.

[0023] Figure 7 It is a structural diagram of a plan management for the coordination of time, space, and resource levels in an embodiment of the present application.

[0024] Figure 8 It is an architecture diagram of a digital manufacturing platform in an embodiment of the present application.

[0025] Figure 9 It is an architecture diagram of a data monitoring and service platform in an embodiment of the present application. Detailed implementation manners

[0026] All features disclosed in this specification, or all steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any manner.

[0027] Any feature disclosed in this specification (including any additional claims, abstract) can be replaced by other equivalent or similar-purpose alternative features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is only an example of a series of equivalent or similar features.

[0028] In view of the requirements of electronic equipment integration for the construction of a digital workshop, and the problem that the existing methods for constructing a digital machining workshop are difficult to cope with the complexity and uncertainty of electronic equipment integration operations, the present application provides a method, system, and program product for constructing a digital workshop for electronic equipment, aiming to construct a digital workshop to improve the efficiency of electronic equipment integration in view of the characteristics of high complexity and uncertainty in the process of electronic equipment integration.

[0029] The present application provides a method for constructing a digital workshop for electronic equipment, as Figure 1 shown, the method includes:

[0030] S1. Construct activities in the design domain, execution domain, management and control domain, and service domain that serve the electronic equipment integration business.

[0031] As Figure 2The figure shows the signal flow diagrams of four business domains. The four business domains constructed above correspond to the four stages of carrying out the electronic equipment integration business, and the four stages are, in sequence: the planning stage, the execution stage, the inspection stage, and the improvement stage, that is, following the general management method of PDCA (Plan, Do, Check, and Act).

[0032] Through digital modeling, map the electronic equipment integration business activities to the virtual space in the design domain. For actual business requirements, under the existing resource conditions, obtain the optimal solution for executing the business in the way of simulation operation, and complete the process design and workshop planning. In the execution domain, use the optimal solution obtained by simulation operation in the virtual space as the input, carry out practice and verification in the physical space, and realize driving the real space by the virtual space. In the control domain and the service domain, through data monitoring and analysis, obtain the improvement direction of the model and algorithm (used in the simulation operation in the design domain), further optimize the design in the virtual space in the design domain, and realize optimizing the virtual space by the real space. In this way, cycle continuously to optimize the digital workshop.

[0033] The digital workshop architecture built in the above step S1 belongs to the division of four business domains according to the business sections in combination with the requirements of the whole machine manufacturing of electronic equipment. Under the digital workshop architecture built in step S1, it is also necessary to design the specific activities of each business domain respectively. The activities designed for building the digital workshop include:

[0034] S2. The configuration design domain is responsible for two business activities: process design and workshop planning.

[0035] As an optional implementation method, the activities of the design domain include:

[0036] Based on the process model and the resource model, carry out process design and workshop planning according to the electronic equipment integration business. Among them, the process model defines the four levels of the main process, sub-process, process section, and process that the electronic equipment integration process is gradually divided into. The resource model defines all the elements of the resources required in the electronic equipment integration process.

[0037] As mentioned before, the electronic equipment integration process is very complex. In the embodiments of the present application, the electronic equipment integration process is disassembled, and a process model and a resource model are constructed to support the mapping of the design domain from the physical space to the virtual space.

[0038] As an optional implementation method, the construction method of the process model includes:

[0039] S21. Define the main process that describes the relationship and output between each sub-process in the electronic equipment integration process.

[0040] The main process includes an overall summary PBOM (Process Bill Of Material) to describe the relationships (including requirements) and outputs between each sub-process, and disassembles the electronic equipment integration process as a whole.

[0041] S22. Define sub-processes that describe the production processes of independent deliverables for each output.

[0042] Each sub-process is carried by a PBOM to describe the production process of independent deliverables of electronic equipment.

[0043] S23. Define process segments that describe the intermediate states between independent deliveries achieved in each sub-process.

[0044] The process segments are used to describe a certain stage state achieved in the electronic equipment integration process, that is, the intermediate state of independent deliverables.

[0045] S24. Define processes that describe all-element information of each process segment.

[0046] The process can be carried by a diagram and multiple associated forms, and is used to describe all-element information of each process regarding process route, personnel, machinery and equipment, materials, process methods, process environment, process time, etc.

[0047] S25. According to the defined main process, sub-processes, process segments and processes, form a process diagram describing the electronic equipment integration process.

[0048] Through the four-level process decomposition from top to bottom, the process design and workshop planning of the entire electronic equipment integration process are completed. As Figure 3 shown is the process model constructed for the process design of a certain electronic equipment integration process.

[0049] For example, for a certain electronic equipment integration business, the method of constructing a process model is as follows:

[0050] The first step: Divide the electronic equipment integration process into multiple sub-processes. For example, divide it into 5 sub-processes, and these 5 sub-processes include the subsystem integration process, the installed component integration process, the antenna integration process, the main equipment integration process and the auxiliary process. Define the main process to describe the relationships and outputs between each sub-process.

[0051] The second step: Define the production processes of each sub-process respectively.

[0052] The third step: Define process segments for the sub-processes. Divide the electronic equipment integration process into 7 major categories of specialties including assembly, debugging, inspection / testing, testing, and general assistance, that is, define that each sub-process contains 7 process segments.

[0053] Step 4: Define processes for process segments. Define processes for 7 process segments. The definitions of the processes are shown in Table 1.

[0054] Table 1 Partial Process Definition Table

[0055]

[0056] Step 5: Define process logic and attributes. According to the technological characteristics of the electronic equipment integration process, the designed logical relationship between processes is mainly the precedence relationship, and any attribute and jump attribute are added to the processes.

[0057] Step 6: Define process man-hours. According to the electronic equipment integration process, define four categories of man-hours: standard settlement man-hours, machine man-hours, manual man-hours, and cycle. The definitions of the four categories of man-hours are shown in Table 2.

[0058] Table 2 Man-hour Definition Table

[0059]

[0060] Step 7: Generate a process flow diagram. Integrate the logic, attributes, and man-hours of each process to form Figure 4 the process flow diagram shown.

[0061] As an alternative implementation, the method for constructing a resource model includes:

[0062] S26. Standardize and refine the definitions of three types of resources: human resources, instrument tooling, and workstations.

[0063] Perform standard classification and capacity classification on the three types of resources, and use attributes such as key parameters, models, numbers, and professional capabilities to implement model definitions for various types of resources, obtaining a resource model as shown in Figure 5 . Construct a complete resource model library, and store information such as standardized capacity entries and key parameters for each type of resource.

[0064] According to the previous example, for a certain electronic equipment integration business, the human resources, instrument tooling resources, and workstation resources included in the constructed resource model are shown in Tables 3, 4, and 5 respectively.

[0065] Table 3 Human Resource Model Definition Table

[0066]

[0067] Table 4 Instrument Tooling Model Definition Table

[0068]

[0069] Table 5 Workstation Model Definition Table

[0070]

[0071] Based on the defined process model and resource model, the process design and workshop planning methods carried out in the design domain, in an alternative implementation, include:

[0072] Based on the plan management model, the electronic equipment integration process is decomposed and managed according to three dimensions: time, space, and resources, and the three dimensions match each other. The so-called mutual matching between the three dimensions means that the granularity of the electronic equipment integration process decomposed in the three dimensions of time, space, and resources corresponds to each other. For example, in the time dimension, the granularity of the process decomposition includes annual plans, monthly plans, and weekly plans. Correspondingly, in the resource dimension, there are also resources decomposed respectively corresponding to the annual plan, monthly plan, and weekly plan. In the space dimension, there are also workstations decomposed respectively corresponding to the annual plan, monthly plan, and weekly plan. The annual plan corresponds to the annual resource requirements and also corresponds to all workstations executing the annual plan in space. The same applies to finer-grained plans such as monthly plans and weekly plans.

[0073] In some feasible implementations, the above-mentioned decomposition and management of the electronic equipment integration process according to the three dimensions of time, space, and resources include:

[0074] S27. Decompose the electronic equipment integration business into tasks according to the delivery time at five levels: annual, monthly, weekly, daily, and hourly, and formulate the completion plan for each level in turn.

[0075] The above-mentioned completion plans at the five levels belong to the batch delivery plan, set delivery plan, middleware delivery plan, section completion plan, and process completion plan in turn. The plans at the five levels can be dynamically adjusted and updated according to the execution situation. The task decomposition in the time dimension is mainly for multiple electronic equipment integration business orders, and multiple orders have batch delivery time requirements. Therefore, the task is decomposed from the annual to the hourly level according to the orders.

[0076] S28. For the tasks at each level, compile the requirements for materials, instrument tooling, labor, and workstations.

[0077] For the above-mentioned completion plans at the five levels, each completion plan corresponds to the decomposition of the resource dimension with different granularities. The resource requirements for the electronic equipment integration process are relatively complex. According to the tasks decomposed in the time dimension, compile the demand plans for materials, instrument tooling, labor, and workstations to ensure material supply, schedule instrument tooling, and arrange labor and workstations.

[0078] S29. Generate corresponding instructions for the tasks and requirements at each level and issue them to the corresponding workshops, production lines, and workstations to guide the electronic equipment integration process.

[0079] Mainly in the spatial dimension, various production instructions are generated and sent to the corresponding workshops, production lines, and specific workstations to guide the personnel in corresponding roles to work collaboratively.

[0080] For example, since the decomposition priority in the time dimension is the highest, and the task decompositions in the other two dimensions both depend on the tasks decomposed in the time dimension, the task plan in the time dimension is called the first-layer plan, that is, the plans of different granularities (annual, monthly, etc.) obtained by decomposing the total electronic equipment integration business in the time dimension; the task plan in the resource dimension is called the second-layer plan, that is, on the basis of the first-layer plan, calculating the resource requirements matching the plans of different granularities decomposed in the time dimension, including the type, total number, and latest complete set time of resource requirements, such as the types of materials and instruments required for the monthly plan, the types of work of human resources, the types of workstations, the total demand for these resources, and the time to complete the resource complete set; the task plan in the spatial dimension is called the third-layer plan, that is, on the basis that the resources are already available, planning how to dispatch work, including arranging specific workstations, human resources, materials, instruments, start and finish times, process requirements, etc. The task decomposition flowchart as shown in Figure 6 is obtained. The three-level collaborative plan management structure is as shown in Figure 7 shown.

[0081] In some specific embodiments, the task decomposition in the three dimensions can be carried out with reference to the plan management activity description table shown in Table 6.

[0082] Table 6 Three-level plan management activity description table

[0083]

[0084] Table 6 Three-level plan management activity description table (continued table 1)

[0085]

[0086] Table 6 Three-level plan management activity description table (continued table 2)

[0087]

[0088] S3. The configuration execution domain is responsible for five business activities: plan management, resource management, warehousing and logistics management, process execution management, and process quality management.

[0089] As an optional implementation method, in the execution domain, each management (i.e., plan management, resource management, warehousing and logistics management, process execution management, and process quality management) activity is carried out through the scheduling digital manufacturing platform.

[0090] In some feasible implementation methods, such as Figure 8As shown in the figure, the digital manufacturing platform includes a target management module, a plan management module, an operation management module, a material management module, a maintenance and operation management module, a quality management module, a warehousing and logistics management module, and a production performance control module. Table 7 provides a detailed definition of each module of the digital manufacturing platform.

[0091] The target management module is responsible for production target management and order management.

[0092] The plan management module is responsible for output plan management, work order plan management, section plan management, capacity requirement management, and process plan management.

[0093] The operation management module is responsible for production scheduling and task assignment management, operation execution and control management, and exception management.

[0094] The material management module is responsible for material kit analysis management, material requirement management, and material requisition management.

[0095] The maintenance and operation management module is responsible for resource model management and resource status management.

[0096] The quality management module is responsible for managing quality data integration, quality inspection and control, quality tracking and traceability, and quality improvement.

[0097] The warehousing and logistics management module is responsible for inbound management, outbound management, and logistics management.

[0098] The production performance control module is responsible for business indicator management, data integration and processing management, and full-process monitoring and analysis work.

[0099] Table 7 Digital Manufacturing Platform Function Requirements Table

[0100]

[0101] Table 7 Digital Manufacturing Platform Function Requirements Table (Continued)

[0102]

[0103] S4. The configuration control domain is responsible for two business activities: data management and situation management.

[0104] As an alternative implementation, the activities of the control domain include:

[0105] S41. Based on the data monitoring and service platform, collect the full-process data of the integrated business of electronic equipment.

[0106] S42. According to the collected data, in response to the defined monitoring situation target, generate relevant situation information for display, and in response to the retrieval requirement, generate relevant report information for feedback.

[0107] S5. The configuration service domain is responsible for two business activities: performance evaluation and prediction optimization.

[0108] As an alternative implementation, the activities of the service domain include:

[0109] S51. Invoke the data monitoring and service platform to define performance indicators and process indicators for the electronic equipment integration business.

[0110] Taking the business activities of monitoring plan management, warehousing and logistics management, and resource management as examples, Table 8 details the performance indicators and process indicators of these three business activities.

[0111] Table 8 Data Monitoring and Indicator Design Table

[0112]

[0113] Table 8 Data Monitoring and Indicator Design Table (Continued Table 1)

[0114]

[0115] Table 8 Data Monitoring and Indicator Design Table (Continued Table 2)

[0116]

[0117] Table 8 Data Monitoring and Indicator Design Table (Continued Table 3)

[0118]

[0119] Table 8 Data Monitoring and Indicator Design Table (Continued Table 4)

[0120]

[0121] S52. Calculate the defined performance indicators and process indicators based on the collected data, and compare and display them with the set performance indicator and process indicator targets.

[0122] S53. In response to a change instruction for the program code, update the managed program code. In this step, the so-called program code includes models and algorithms used to execute simulations in a virtual space to obtain the optimal solution for executing the business.

[0123] The data monitoring and service platform is used for scheduling and utilization in the inspection and improvement links of the electronic equipment integration process. In some feasible implementation methods, such as Figure 9As shown in the figure, the data monitoring and service platform includes a data layer, a middle platform layer, an algorithm layer, and an application layer to carry out the business activities of the digital workshop in the control domain and the service domain. Among them, the data layer is responsible for collecting data and storing it in the form of structured data, semi-structured data, or unstructured data; the middle platform layer is responsible for processing the collected data; the algorithm layer manages all algorithms and models in the digital space; the application layer is responsible for the application functions of the digital workshop, such as basic retrieval, associated retrieval, report platform, and situation monitoring.

[0124] According to the business activities of the design domain, execution domain, control domain, and service domain of the digital workshop constructed in this application, Table 9 gives the detailed definitions of each business activity.

[0125] Table 9 Definition Table of Business Activities of Electronic Equipment Integrated Digital Workshop

[0126]

[0127] Table 9 Definition Table of Business Activities of Electronic Equipment Integrated Digital Workshop (Continued Table)

[0128]

[0129] It should be noted that the execution order of the above steps S1 - S5 is not required to be executed according to the recorded order. It is possible to first design the business activities of steps S2 - S5 separately and then execute step S1 for integration. That is, unless there is an inevitable logical sequence, there is no strict execution order requirement for steps S1 - S5 of this application.

[0130] According to the design concept of this application, the embodiments of this application also provide a computer program product, including a computer program. When the computer program is run by a processor, it can execute the method for constructing an electronic equipment digital workshop in the above embodiments.

[0131] In addition, this application also provides an electronic equipment digital workshop system, which is constructed by the method for constructing an electronic equipment digital workshop in the above embodiments.

[0132] The present invention is not limited to the foregoing specific embodiments. The present invention extends to any new feature or any new combination disclosed in this specification, as well as any new method or process step or any new combination disclosed.

Claims

1. A method for constructing a digital workshop of electronic equipment, characterized in that, Including: Conducting activities in the design domain, execution domain, control domain, and service domain that serve the integrated business of electronic equipment; where: The design domain is responsible for two business activities: process design and workshop planning; the activities of the design domain include: Based on the process model and resource model, conducting process design and workshop planning according to the integrated business of electronic equipment; where the process model defines four levels: the main process, sub-process, process segment, and process, which are hierarchically divided in the integrated process of electronic equipment; the resource model defines all the resources required in the integrated process of electronic equipment. The construction method of the process model includes: Defining the main process that describes the relationships and outputs between each sub-process in the integrated process of electronic equipment. Defining the sub-process that describes the production process of each independent deliverable output. Defining the process segment that describes the intermediate state of each independent deliverable reached in each sub-process. Defining the process that describes all the element information of each process segment. Forming a process diagram that describes the integrated process of electronic equipment based on the defined main process, sub-process, process segment, and process. The execution domain is responsible for five business activities: plan management, resource management, warehousing and logistics management, process execution management, and process quality management. The control domain is responsible for two business activities: data management and situation management. The service domain is responsible for two business activities: performance evaluation and prediction optimization.

2. The method for constructing a digital workshop of electronic equipment according to claim 1, wherein, Conducting process design and workshop planning according to the integrated business of electronic equipment, including: Based on the plan management model, decomposing and managing the integrated process of electronic equipment in three dimensions: time, space, and resources, and the three dimensions are mutually matched.

3. The method for constructing a digital workshop of electronic equipment according to claim 2, characterized in that The decomposing and managing the integrated process of electronic equipment in three dimensions of time, space, and resources includes: Decomposing the integrated business of electronic equipment into tasks at five levels: annual, monthly, weekly, daily, and hourly according to the delivery time, and sequentially formulating the completion plan for each level. Preparing the requirements for materials, instruments and tooling, labor, and workstations for each level of tasks. Generating corresponding instructions for each level of tasks and requirements and issuing them to the corresponding workshops, production lines, and workstations to guide the integrated process of electronic equipment.

4. The method for constructing a digital workshop of electronic equipment according to claim 3, wherein, The activities of the execution domain include: Carrying out various management activities based on the digital manufacturing platform; the digital manufacturing platform includes a target management module, a plan management module, an operation management module, a material management module, a maintenance and operation management module, a quality management module, a warehousing and logistics management module, and a production performance control module. The target management module is responsible for production target management and order management. The plan management module is responsible for output plan management, work order plan management, section plan management, capacity requirement management, and process plan management. The operation management module is responsible for production scheduling and task assignment management, operation execution and control management, and exception management. The material management module is responsible for material kit analysis management, material requirement management, and requisition requirement management. The maintenance and operation management module is responsible for resource model management and resource status management. The quality management module is responsible for managing quality data integration, quality inspection and control, quality tracking and traceability, and quality improvement. The warehousing and logistics management module is responsible for inbound management, outbound management, and logistics management; The production performance control module is responsible for business indicator management, data integration and processing management, and full-process monitoring and analysis.

5. The method for constructing a digital workshop of electronic equipment according to claim 1, wherein The activities of the control domain include: Based on the data monitoring and service platform, collect the full-process data of the electronic equipment integration business; According to the collected data, in response to the defined monitoring situation target, generate relevant situation information for display, and in response to the retrieval requirement, generate relevant report information for feedback.

6. The method for constructing a digital workshop for electronic equipment according to claim 5, wherein The activities of the service domain include: Call the data monitoring and service platform to define performance indicators and process indicators for the electronic equipment integration business; According to the collected data, calculate the defined performance indicators and process indicators, and compare and display them with the set performance indicator and process indicator targets; In response to the change instruction of the program code, update the managed program code.

7. A digital workshop system for electronic equipment, characterized in that, The electronic equipment digital workshop system is constructed by the electronic equipment digital workshop construction method according to any one of claims 1-6.

8. A computer program product, comprising a computer program, characterized in that, When the computer program is run by the processor, it can execute the electronic equipment digital workshop construction method according to any one of claims 1-6.

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