JP2003030393A - Operation process controlling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform progress control over manufacturing stages and to contribute to the improvement of productivity, etc. SOLUTION: Information regarding operation stages needed to manufacture respective products is inputted to a management control part 10 which manages the operation stages needed to manufacture the products together with the lot numbers of the respective manufactured products while given the lot numbers by the products. The management control part 10 creates an operation instruction document where the information regarding the operation stages inputted to the management control part 10 and the lot numbers of the products are represented as linear and two-dimensional codes. When the operation instruction document is supplied to the respective operation stages and specific operations are performed for components, etc., the codes regarding the operations of the operation instruction document and the codes regarding the lot numbers are read by a code read means 17 and inputted to the management control part 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of managing work in each work process performed when manufacturing various products.

[0002]

2. Description of the Related Art Various products are usually manufactured through a plurality of manufacturing processes. In a product manufacturing line, a product is obtained by sequentially performing the operations required to manufacture the product. In this case, in order to manage the work in each work process, each product is assigned a lot number,
A work instruction sheet in which necessary work steps are described is created for each product, and the work instruction sheet is supplied to each work step together with parts and the like for performing a predetermined work. The worker
Based on the work instruction sheet, a predetermined work is performed in each work process. When the work is completed, the necessary items in the work instruction sheet are checked, and then the work instruction sheet is supplied to the next work process together with the parts and the like for which the predetermined work has been completed.

[0003]

In each work process, the lot number assigned to each product, the work performed, the date when the work was performed, etc., were recorded in the work instruction sheet.
Must be filled by the operator. However, it is troublesome to enter the lot number, work content, etc. assigned to each product,
There is also a problem that it is not easy to fill them in accurately. In addition, the worker may fill in necessary items in the work instruction sheet, which may reduce work efficiency in each work process.

Further, since the work instruction sheet is supplied to each work process together with parts and the like, it is possible to grasp when the work instructed by the work instruction sheet has been carried out until all the work is completed. There is also a problem that it is impossible to grasp the level to which the work has been carried out for one product. Furthermore, the work performance in each work process must be totaled after collecting the work instructions, and there is a problem that each work process in the manufacturing line cannot be reliably managed.

The present invention solves such a problem, and an object thereof is to provide a work process management method capable of managing the progress in the manufacturing process and contributing to the improvement of productivity. To provide.

[0006]

A work process management method according to the present invention relates to a management control unit that manages work processes required for manufacturing a product together with a lot number of each product to be manufactured. The process of inputting the information on the work process necessary for manufacturing the product by assigning a lot number to each product, and the information on the work process and the product lot number input to the management control unit are one-dimensional or two-dimensional. By a process of creating a work instruction sheet displayed as a dimension code and performing a predetermined work in the work step, the code relating to the work and the code relating to the lot number in the work instruction sheet are read by the code reading means. And a step of inputting to the management control unit.

The management control unit manages the information about the work process read by the code reading means together with the date when the information was read.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic configuration diagram showing an example of a work management system used for implementing the work process management method of the present invention. This work management system is used, for example, in a production line of a polishing pad used when polishing a semiconductor wafer. The polishing pad is configured by laminating a surface layer on a support layer, and the surface layer is formed by impregnating a porous urethane resin or polyurethane resin with the urethane resin while maintaining the porosity. There is. The support layer is made of a material that is relatively bendable but has low elasticity.

This work management system displays a CPU (central processing unit) 11, a RAM 12 and a ROM 13 in which programs, data and the like are stored, an input means 15 such as a keyboard for inputting various information, and various information. A management control unit 10 having a display unit 14 and a printer 16 for printing various kinds of information on recording paper is provided. The management control unit 10 is composed of a normal computer system. Further, the CPU 11 of the management control unit 10
A plurality of bar code reading means 17 is connected to. Each bar code reading means 17 is arranged at a work place where each work process is performed in the manufacturing line.

The CPU 11 of the management control unit 10 creates a work instruction sheet based on various information input by the input means 15.

Information on work required for manufacturing is input to the CPU 11 based on an order receipt in which specifications of a polishing pad, which is a product, are described. In this case, first, the lot number of each polishing pad to be manufactured is set for each product to be manufactured based on the specifications of the polishing pad described in the order receipt, and C is input by the input means 15 respectively.
It is input to PU11. And based on the order receipt,
The necessary work steps are set for each polishing pad, which is a product for which each lot number is set, and the information about each set work step is input to the CPU 11 by the input means 15.

The working steps required for manufacturing the polishing pad include, for example, a step of cutting the support layer,
There is a sticking step of sticking the surface layer to the cut support layer, and a processing step of processing the surface layer stuck to the support layer, and each of these working steps is performed for each product to which a lot number is given. Each is set. The shipping process for shipping the manufactured product is also set for each product as a work process.

In this case, the information of each work process designated for each product is set by a 9-digit number, and each work process set for one product is a continuous number. In this case, for each work process, the planned date, which is the date on which each work is scheduled to be performed, and the planned quantity, which is the number of parts to be processed in each work process on that planned date, are set. Then, by the input means 15, C
It is input to PU11.

FIG. 2 is a work plan table showing the work plan set in this way. In the work plan table, as shown in FIG. 2, for each work process, a number indicating each work process, a planned date for implementing the work process, and a planned quantity that is the number of parts to be processed on the planned date. There are fields for entering and respectively. The work plan table also has columns for each work process, which indicate the actual date of work and the actual quantity.

In the example shown in FIG. 2, May 15 is set as the planned date for carrying out the cutting process, and 100 pieces are set as the planned quantity for carrying out the cutting process. Further, the planned date for carrying out the attaching process is May 15, and 95 pieces are set as the planned quantity for carrying out the attaching process. Similarly, May 20 is set as the planned date for carrying out the machining process, and 90 pieces are set as the planned quantity for carrying out the machining process.
Further, May 21 is set as the planned date for carrying out the shipping process, and 90 pieces are set as the planned quantity for carrying out the shipping process.

When the plan for each work process is set in this manner, the set work process, the planned date, and the planned quantity are stored in the ROM 13 and also for each product.
Work instructions are created and printed out.

FIG. 3 shows an example of the work instruction document created in this case. The created work instruction sheet 20 includes
The lot number unique to each product is displayed by the barcode 21. Then, the numbers indicating the information in each work process required for the product are also displayed by the barcodes 22 to 25, respectively. In this case, the information numbers related to the respective work processes for the products to which the lot numbers are given are serial numbers.

In this way, when a work instruction sheet to which a lot number has been added is created and printed out for each product, the printed work instruction sheet, together with the parts to be the products, has a predetermined size. It is supplied to the production line, and each work process is carried out in the production line according to the instructions in the work instruction sheet.

In the production line, for each work process,
The bar code reading means 17 is provided, and by supplying the parts and the work instruction sheet 20, the predetermined work described in the work instruction sheet is performed.

In the polishing pad production line, first, the work of cutting out the support layer is carried out. Then, when the predetermined support layer is cut out by the cutting out work, the bar code 21 indicating the lot number of the product in the work instruction sheet 20 is read by the bar code reading means 17, and the bar code 22 concerning the executed cutting out work is read. It is read by the bar code reading means 17. Then, the work instruction sheet 20 is supplied to the next work process together with the cut support layer.

In the next working step, the surface layer is attached to the support layer. When this work is completed, the bar code 2 displaying the lot number of the product in the work instruction sheet 20.
1 is read by the bar code reading means 17, and the bar code 23 relating to the pasting work performed is performed.
Is read by the barcode reading means 17. Then, the work instruction sheet 20 is supplied to the next work step together with the support layer to which the surface layer is attached.

In the next working step, the surface layer attached to the support layer is processed into a polishing pad. When this work is completed, the bar code 21 indicating the lot number of the product in the work instruction sheet 20 is replaced with the bar code reading means 1.
The bar code 24 is read by the bar code reading means 17 as well as the bar code 24 related to the processing operation performed. Then, the work instruction sheet 20 of the manufactured polishing pad is supplied to the next work process.

Finally, the manufactured polishing pad is shipped. When the shipping work is completed, the bar code 21 indicating the lot number of the product in the work instruction sheet 20 is read by the bar code reading means 17, and the bar code 25 relating to the shipping work is read by the bar code reading means 17.
Read at.

In this way, the bar code reading means 1
7, the bar code 21 for displaying the lot number of the product in the work instruction sheet 20 and the bar codes 22 to 25 related to the work in each work process are read, and the CPU 11 reads the bar codes 21 to 25. Along with the date, the quantity of the parts on which the predetermined work has been performed in each work process on that date is totaled and input into the actual result column of the plan table shown in FIG.

As described above, since the work instruction sheet 20 prepared for each product displays the lot number and the work content to be executed in each work step by the bar codes 21 to 25, In the work process, the lot number and the work content in each work process can be managed only by reading the lot number and the work content with the barcode reading means 17. Therefore, it is possible to easily grasp the progress status of the work in each work process.

Further, since the information read by the bar code reading means 17 is input to the actual result column of the work plan table, the actual results of the work in each work process are sequentially added up. Therefore, the work record in each work process can be grasped in real time, and the yield, the production capacity, etc. in each work process can be easily improved.

Further, based on the lot number of the shipped product, it is possible to acquire data regarding each work process at the time of manufacturing.

[0029]

As described above, the work process management method of the present invention can easily and reliably manage the work process performed for each product.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an example of a management system used for implementing a work process management method of the present invention.

FIG. 2 is a plan table set in a management control unit of the management system.

FIG. 3 is a work instruction document created by a management control unit.

[Explanation of symbols]

10 Management control unit 11 CPU 12 RAM 13 ROM 14 Display means 15 Input means 16 Printer 17 Bar code reading means 20 work instructions 21-25 barcode

Claims (2)

[Claims] 1. A management control unit that manages the work process required to manufacture a product together with the lot number of each product to be manufactured, and provides information about the work process necessary to manufacture each product to a management control unit. A process of assigning a lot number to each product and inputting it, and a process of creating a work instruction sheet in which the information about the work process input to the management control unit and the lot number of the product are displayed as a one-dimensional or two-dimensional code. And by performing a predetermined work in the work process,
A step of inputting the code relating to the work and the code relating to the lot number in the work instruction sheet to the management control section by reading the code with a code reading means. 2. The work management method according to claim 1, wherein the management control unit manages the information about the work process read by the code reading unit together with the date when the information was read.