JPH06176028A - Operation plan scheduling device - Google Patents

Abstract

PURPOSE:To minimize reserved components and shorten the lead time by indicating re-operation as to a component for which replanning needs to be indicated as a result of the diversion of reserved components. CONSTITUTION:The plan of a machine whose operation process has high priority is read out of an assembly plan information file 6, its constituent components are expanded by referring to component constitution information in a component constitution information file 5, and reserved components registered in a diverted component storage information file 7 for the respective constituent components are preferentially put on order. Then a component diversion rescheduling means 8 considers that operation for the same component is completed when the same component is present and outputs no operation indication, and writes a re- operation indication and a re-ordering indication as operation indication information in an operation indication information file 9 as to a nonidentical component, namely, a component for which replanning should be indicated as a result of the diversion of the reserved components, thereby scheduling the operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in a manufacturing control system and an assembly control system in a manufacturing industry, and develops components for a machine or product (hereinafter collectively referred to as machine) and schedules an assembly work plan. More particularly, the present invention relates to a work plan scheduling apparatus which, when a reserved part is generated due to a change in a work plan, preferentially diverts and uses the handling of the reserved part to another plan. .

[0002]

2. Description of the Related Art Conventionally, a work plan for assembling products in the manufacturing industry has several levels of steps until the final assembly of products, and the upper level assembly is based on the parts assembled at the lower level. It is made up of parts such that

By the way, in the work plan for product assembly as described above, when the plan is changed, the parts assembled at the lower level have already been linked to the machine, If the schedule is shifted due to scheduling, the parts are treated as pending, and the canceled parts must be manually maintained and considered for use in another plan. further,
If the plan changes frequently, you cannot even change the plan, or even if you can't use the parts that were originally diverted to another plan, they will remain unused in the warehouse. It is very difficult to effectively utilize or schedule work plans efficiently.

[0004]

As described above, in the conventional work plan scheduling, the work plan must be changed or canceled, and the assembly in the lower process has already been completed and the work plan must be put on hold. If there are parts that do not meet the plan, even if the plan change is not accepted or if it is unavoidable, if the operator does not consider diversion to another plan, the reserved parts will remain in the warehouse. , Efficient warehouse shelf operation,
There is a problem that it is difficult to schedule a work plan.

An object of the present invention is to reduce the inventory of the shelves in the warehouse by rescheduling the work plan by preferentially utilizing the reserved parts generated by the plan change when scheduling the work plan. It is an object of the present invention to provide an extremely reliable work plan scheduling apparatus capable of minimizing lead time by using completed holding parts.

[0006]

In order to achieve the above-mentioned object, according to the present invention, in a device for scheduling a work plan for manufacturing and assembling in a manufacturing industry, when a work plan is changed, the machine to be changed and the change When the plan change input means for inputting the category of the number, the changed machine and the change category from the plan change input means are accepted, the components of the relevant machine are expanded, the assembly progress status of each component is checked, and the assembly is already completed. If there is a part in progress in the warehouse, the part is registered as a reserved part in the converted part storage means, and a rescheduling request for rescheduling the work plan due to the work plan change is made. When the scheduling requesting means and the rescheduling requesting means from the rescheduling requesting means are inputted, the constituent parts of the machine having the high priority of the work process. To prioritize the reserved parts registered in the converted part storage means for each component, and give the rework instruction for the parts that need to be replanned by diverting the reserved parts. Accordingly, the component diversion rescheduling means for scheduling the work plan is provided.

[0007]

Therefore, in the work plan scheduling apparatus of the present invention, when the work plan is changed, when the machine number to be changed and the classification of the change are accepted, the constituent parts of the concerned machine are expanded and the assembling progress of each constituent part is progressed. The situation is investigated,
If there is a part that has already been assembled and is in the warehouse, the part is registered as a reserved part in the diversion part storage means, and a rescheduling request for the work plan accompanying the change of the work plan is input. Then, the components of the machine with the highest priority in the work process are expanded, and the reserved parts registered in the converted part storage means are assigned with priority for each component, and the reserved parts are diverted and re-planned. The work plan is scheduled by issuing a re-work instruction for the parts that must be instructed, and it is easy to change the manufacturing plan and the assembly work plan of the machine with the parts already in process. The number of warehouse shelves used can be reduced by reusing the reserved parts generated by the changes to other plans, and the number of units assembled can be reduced. It is possible to shorten the time.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention preferentially diverts a reserved part that occurs when a work plan is changed to another plan in comparison with the scheduling of an assembly work plan that is normally performed. An embodiment of the present invention based on the above concept will be described below in detail with reference to the drawings. FIG. 1 is a functional block diagram showing an example of the overall configuration of a work plan scheduling apparatus according to the present invention.

That is, as shown in FIG. 1, the work plan scheduling apparatus of this embodiment has a plan change input terminal 1
, A rescheduling request terminal 2, a plan change acceptance means 3, a diverted parts takeout means 4, a parts configuration information file 5, an assembly plan information file 6, a diverted parts storage information file 7, a parts diversion rescheduling means 8, work instruction information It is composed of a manufacturing control computer 10 having a file 9.

Here, when the work plan is changed, the plan change input terminal 1 determines the number of the machine to be changed and the classification of the change (whether the plan is canceled or the schedule is changed).
It is selected by screen input. The rescheduling request terminal 2 requests the rescheduling of the work plan accompanying the change of the work plan. on the other hand,
The plan change receiving means 3 receives the change machine and the change classification from the plan change input terminal 1.

When the plan change accepting means 3 accepts the changed machine and the change classification, the diverted parts taking-out means 4 refers to the parts composition information in the parts composition information file 5 to develop the components of the corresponding machine and assemble them. Plan information file 6
The assembly progress status of each component is checked by referring to the assembly plan information of No., and when there is a part that is already assembled and is in the warehouse, the part is stored as a reserved part in the diversion part storage information file 7. In addition to the registration, the parts required to be assembled later are registered in the assembly plan information file 6 only by changing the schedule. On the other hand, the parts configuration information file 5
Is for storing the component configuration information. Further, the assembly plan information file 6 stores the parts information that needs to be assembled later only as a schedule change as the assembly plan information. Further, the diverted component storage information file 7 stores diverted component storage information.

On the other hand, the parts diversion rescheduling means 8
When a rescheduling request is input from the rescheduling request terminal 2, the plan of the machine having the higher priority of the work process is read from the assembly plan information file 6 and the component parts thereof are referred to the component structure information of the component structure information file 5. Then, for each component, the reserved parts registered in the diversion part storage information file 7 are assigned with priority, and if the same parts exist, the parts are considered to have already been completed. No instruction is output, and a work instruction information file with re-work instructions and re-order instructions as work instruction information for parts that do not have the same parts, that is, for parts for which rescheduling instructions must be given by diverting reserved parts By writing in 9, the work plan is scheduled. Further, the work instruction information file 9 stores the work instruction information from the parts diversion rescheduling means 8. Next, the operation of the work plan scheduling apparatus of the present embodiment configured as described above will be explained using FIG. 2 to FIG. First, FIG. 2 is a diagram showing an example of a component configuration for a completed machine, which is required when scheduling a normal assembly plan,

Referring to FIG. 2, the machine A will be described. First, the completed machine is composed of parts "a" to "e", and the parts "a", "c" and "e" will be further described. "A1" to "a3", "c1" to "c2",
It is composed of parts "e1" to "e3", and the part "c2" is further composed of parts "c21" to "c25".

Normally, when scheduling an assembly plan, a work plan is created in order from step 1 on the right side of FIG. 2, and finally when all the parts of steps 1 and 2 are completed,
A plan for the final step, Step 3, will be created.
The description of the machine B is omitted based on the same idea, but only the parts “c” and “d” are common parts to the machine A. Next, with respect to the work plan of the number A machine created under the above conditions, a process for canceling the plan will be described. The plan change accepting means 3 and the diverted parts extracting means 4 perform processing according to the flow chart shown in FIG.

That is, first, from the plan change input terminal 1, the number of the machine to be changed and the category of the change (1 = cancel, 2 = change schedule) are specified and input to the plan change receiving means 3.

When the above-mentioned acceptance is completed by the plan change accepting means 3, the diversion parts extracting means 4 develops the constituent parts of the corresponding machine A with reference to the part composition information of the part composition information file 5, The progress status of is referred to from the assembly plan information in the assembly plan information file 6. As a result, if the progress status of the component is “not yet started”, nothing is done, and if the progress status of the component is “completed”, the component information is registered in the diversion component storage information file 7. .

Next, when the above-mentioned change request is completed, the re-scheduling request terminal 2 requests the component diversion re-scheduling means 8 to re-schedul the work plan. Then, in the parts diversion rescheduling means 8,
The processing is performed according to the flowchart shown in FIG.

That is, first, the assembly plan information file 6
From the assembly plan information of No., the machine with the highest priority of the work process is read out, its component parts are developed by referring to the component structure information of the component structure information file 5, and the diversion part is stored for each one of the component parts. The reserved parts registered in the information file 7 are allocated. As a result, when the same component exists, the work instruction is not issued because the work of the same component has already been completed. Further, the work instruction information is written in the work instruction information file 9 for the parts that do not have the same parts. The above processing is performed for all the components.

FIG. 5 is a diagram showing an example of the effects of (a) stacking of man-hours and work instructions and (b) reduction of the number of shelves used in a warehouse when scheduling is performed by this embodiment and the conventional method. is there.

The upper part of FIG. 5A is a stacking diagram of man-hours and work instructions when the conventional scheduling is performed,
The lower part is a stacking diagram of man-hours and work instructions according to the present embodiment.

Further, 1 in FIG. 5 (b) is a stacking diagram of the number of warehouse shelves used when the machine A is canceled, FIG.
2B of FIG. 5B is a stacked diagram of the number of used shelves in the warehouse when the conventional scheduling is performed, and 3 of FIG. 5B is a stacked diagram of the used number of shelves in the warehouse according to the present embodiment.

As described above, in the present embodiment, the apparatus for scheduling the work plan for manufacturing and assembling in the manufacturing industry, when the work plan is changed, the machine to be changed and the classification of the change (plan cancel). Or a schedule change), a plan change input terminal 1 for selecting by screen input, a rescheduling request terminal 2 for requesting rescheduling of a work plan accompanying a change of the work plan,
When the plan change accepting means 3 for accepting the change machine and the change category from the plan change input terminal 1 and the change machine and the change category are accepted by the plan change accepting means 3, refer to the component configuration information in the component configuration information file 5 When the component parts of the Unit No. are expanded and the assembly progress information of the assembly plan information file 6 is referred to check the assembly progress status of each component, if the assembly is completed and there is a part in the warehouse, The part is registered as a reserved part in the converted part storage information file 7, and a converted part extracting means 4 for registering a part which needs to be assembled later in the assembly plan information file 6 only by changing the schedule, and a rescheduling request terminal 2 When a rescheduling request is input from the assembly plan information file 6, the plan of the machine with the highest priority of the work process is read and the When a component is expanded with reference to the component configuration information in the component configuration information file 5, the reserved component registered in the diverted component storage information file 7 is assigned to each component with priority, and when the same component exists Does not output a work instruction because the work has already been completed for the same part, and does not output a work order, and does not output a work order for a part that does not have the same part, that is, a part for which a rescheduling instruction must be given by diverting a reserved part The re-ordering instruction is written in the work instruction information file 9 as work instruction information, so as to schedule the work plan.

Therefore, even when the assembly work plan is canceled or the schedule is changed, the operator's operation is not required,
When scheduling the assembly work plan, we effectively take in the parts that have been instructed and actually manufactured and are in process in the warehouse. Since the completed canceling parts are preferentially used, the lead time can be shortened.

[0024]

As described above, according to the present invention, when a work plan is changed, if the number of the machine to be changed and the classification of the change are accepted, the constituent parts of the concerned machine are expanded and each constituent part is assembled. Check the progress status and if there is a part that has already been assembled and is in the warehouse, register the part as a reserved part in the diversion part storage means and re-create the work plan due to the work plan change. When a scheduling request is entered, the components of the machine with the highest priority in the work process are expanded, and each component is assigned to the reserved parts registered in the diverted parts storage means, and the reserved parts are diverted. By issuing rework instructions for parts that must be replanned by
Since I plan to schedule work plans,
When scheduling a work plan, the reserved parts generated due to the plan change are preferentially used and the work plan is rescheduled to reduce the inventory of warehouse shelves and minimize the reserved parts. It is possible to provide an extremely reliable work plan scheduling apparatus that can shorten the lead time by using the reserved parts.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing an embodiment of a work plan scheduling apparatus according to the present invention.

FIG. 2 is a diagram showing an example of a component configuration of a machine required when scheduling a normal assembly plan in the same embodiment.

FIG. 3 is a flowchart for explaining the operation of the plan change accepting means and the diversion part extracting means in the embodiment.

FIG. 4 is a flowchart for explaining the operation of the component diversion scheduling means in the embodiment.

[FIG. 5] Accumulation of man-hours / work instructions in the embodiment,
FIG. 6 is a diagram for explaining the effect of reducing the number of warehouse shelves used.

[Explanation of symbols]

1 ... Plan change input terminal, 2 ... Rescheduling request terminal, 3 ... Plan change receiving means, 4 ...
5 ... Parts configuration information file, 6 ... Assembly plan information file, 7 ... Diversion parts storage information file, 8 ... Parts diversion rescheduling means, 9 ... Work instruction information file, 10
… Manufacturing control calculator.

Claims (1)

[Claims] 1. In a device for scheduling a work plan for manufacturing and assembly in a manufacturing industry, when the work plan is changed, a plan change input means for inputting a machine to be changed and a classification of the change, the plan change input When the changed number and change classification from the means are accepted, the components of the relevant number are expanded and the assembly progress status of each component is checked, and when there is a component that is already assembled and is in the warehouse, A diverted part extracting means for registering the part as a reserved part in the diverted part storage means, a rescheduling request means for requesting rescheduling of the work plan accompanying the change of the work plan, and a rescheduling request means for rescheduling When the scheduling request is input, the components of the machine with the highest priority in the work process are expanded, and Scheduling of the work plan by giving priority to the reserved parts registered in the parts storing means, and issuing a rework instruction for the parts that need to be replanned by diverting the reserved parts. A work plan scheduling device, comprising: