EP0508308A2
Expired / Lapsed
EP
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Automatic manufacturability evaluation method and system
Assignee: Hitachi Ltd
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Filing: 1992-04-02
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Granted: —
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Expires: 2012-04-02
Abstract
Abstract Automatic manufacturability evaluation method and system (30) for automatically evaluating quantitatively on the basis of design information (22) created by using a CAD unit (21) whether a structure of a product as designed is easy to manufacture or assemble, for the purpose of increasing productivity of the product. With the aid of a processing unit such as CAD (21) and an information processing system (30) for evaluating manufacturability such as assemblability and processability, an assembling order, assembling method, processing method and others are estimated. On the basis of the results of the estimations, optimal assembling order and method, optimal processing method and others are determined, the results of which is outputted, as occasion requires.
Inventors
- 👤 Toshijiro Ohashi
- 👤 Syoji Arimoto
- 👤 Seii Miyakawa
- 👤 Mitsuharu Hayakawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 22:00
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/4097; G05B19/418; G05B19/41865; G05B2219/00; G05B2219/30; G05B2219/31; G05B2219/31065; G05B2219/32; G05B2219/32234; G05B2219/35; G05B2219/35028; G05B2219/35193; G05B2219/35199; G05B2219/35212; G05B2219/50; G05B2219/50397; Y; Y02; Y02P; Y02P90/00; Y02P90/02
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
108 words
An automatic manufacturability evaluation method for automatically evaluating manufacturability of a product to be manufactured, comprising: a step (111) of reading product design information (Figs. 3A, 3B) concerning parts constituting a product to be manufactured from a storage unit (22) in which said information is previously stored; a manufacturing process estimating step (113) for estimating at least a process for manufacturing said product on the basis of the product design information read out from said storage unit; and a manufacturability evaluation index calculation step (115) of calculating a manufacturability evaluation index (E) indicating a degree of ease of manufacturing said product (i.e. manufacturability thereof) by said estimated process.
Claim 2
Dependent Claim
50 words
An automatic manufacturability evaluation method according to claim 1, wherein in said manufacturing process estimating step (113), a plurality of processes for manufacturing said product are estimated, and wherein in said manufacturability evaluation index calculation step (115), the manufacturability evaluation index is calculated for each of said plural manufacturing processes.
Claim 3
Dependent Claim
49 words
An automatic manufacturability evaluation method according to claim 2, further comprising: a manufacturing process determining step (116) of determining as a most desirable manufacturing process one of said plural manufacturing processes which gains a highest manufacturability evaluation index value of those calculated in said manufacturability evaluation index calculating step.
Claim 4
Dependent Claim
29 words
An automatic manufacturability evaluation method according to claim 1, wherein said product design information contains at least shape information (Fig. 3A) of parts constituting the product to be manufactured.
Claim 5
Dependent Claim
30 words
An automatic manufacturability evaluation method according to claim 1, wherein said product design information contains shape and size information (Fig. 3A) of the parts constituting the product to be manufactured.
Claim 6
Dependent Claim
32 words
An automatic manufacturability evaluation method according to claim 1, wherein said product design information contains part identifier information and attribute information representing attributes of the parts constituting said product to be manufactured.
Claim 7
Dependent Claim
46 words
An automatic manufacturability evaluation method according to claim 1, wherein in said manufacturing process estimating step, at least one of process of assembling said parts, an assembling order in which said parts are assembled, a method of processing said parts and an inspection method is estimated.
Claim 8
Dependent Claim
34 words
An automatic manufacturability evaluation method according to claim 1, wherein in said manufacturing process estimating step includes a step (113) of estimating a sequence in which said parts are to be attached upon assembling.
Claim 9
Dependent Claim
30 words
An automatic manufacturability evaluation method according to claim 8, wherein said manufacturing process estimating step includes a step (115, Fig. 7) of estimating movements of said parts upon attachment thereof.
Claim 10
Dependent Claim
65 words
An automatic manufacturability evaluation method according to claim 1, further comprising: an overall cost calculating step (118) of calculating an overall cost by supplementing the manufacturability evaluation index calculated at said manufacturability evaluation index calculating step with data based on part purchase prices of all the parts constituting said product to be manufactured, said part purchase cost data being previously stored in said storage unit.
Claim 11
Dependent Claim
128 words
An automatic manufacturability evaluation system for evaluating manufacturability of a product to be manufactured in an automated manner, comprising: a storage unit (22) for storing previously product design information (Figs. 3A, 3B) concerning parts constituting a product to be manufactured; product design information read means (111) for reading the product design information of parts constituting a product of concern from said storage unit by inputting information concerning said parts; manufacturing process estimating means (113) for estimating at least a process for manufacturing said product on the basis of the product design information read out from said storage unit; and manufacturability evaluation index calculation means (115) for calculating a manufacturability evaluation index (E) indicating a degree of ease of manufacturing said product (i.e. manufacturability thereof) by said estimated process.
Claim 12
Dependent Claim
52 words
An automatic manufacturability evaluation system according to claim 11, wherein said manufacturing process estimating means (113) is designed to estimate a plurality of processes for manufacturing said product, and wherein said manufacturability evaluation index calculation means (115) is designed to calculate the manufacturability evaluation index for each of said plural manufacturing processes.
Claim 13
Dependent Claim
48 words
An automatic manufacturability evaluation system according to claim 12, further comprising: manufacturing process determining means (116) for determining as a most desirable manufacturing process one of said plural manufacturing processes which gains a highest manufacturability evaluation index value of those calculated by said manufacturability evaluation index calculating step.
Claim 14
Dependent Claim
29 words
An automatic manufacturability evaluation system according to claim 11, wherein said product design information contains at least shape information (Fig. 3A) of parts constituting the product to be manufactured.
Claim 15
Dependent Claim
30 words
An automatic manufacturability evaluation system according to claim 11, wherein said product design information contains shape and size information (Fig. 3A) of the parts constituting the product to be manufactured.
Claim 16
Dependent Claim
32 words
An automatic manufacturability evaluation system according to claim 11, wherein said product design information contains part identifier information and attribute information representing attributes of the parts constituting said product to be manufactured.
Claim 17
Dependent Claim
44 words
An automatic manufacturability evaluation system according to claim 11, wherein said manufacturing process estimating means is designed to estimate at least one of process of assembling said parts, an assembling order in which said parts are assembled and a method of processing said parts.
Claim 18
Dependent Claim
32 words
An automatic manufacturability evaluation system according to claim 11, wherein said manufacturing process estimating means includes means (113) for estimating a sequence in which said parts are to be attached upon assembling.
Claim 19
Dependent Claim
29 words
An automatic manufacturability evaluation system according to claim 18, wherein said manufacturing process estimating means includes means (115, Fig. 7) for estimating movements of said parts upon attachment thereof.
Claim 20
Dependent Claim
64 words
An automatic manufacturability evaluation system according to claim 11, further comprising: overall cost calculating means (118) for calculating an overall cost by supplementing the manufacturability evaluation index calculated by said manufacturability evaluation index calculating means with data based on part purchase prices of all the parts constituting said product to be manufactured, said part purchase cost data being previously stored in said storage unit.
Claim 21
Dependent Claim
52 words
An automatic manufacturability evaluation system according to claim 11, further comprising: a CAD processing unit for generating the product design information concerning the parts constituting the product to be manufactured; wherein said storage unit (22) is constituted by a CAD database storing the product design information generated by said CAD processing unit.
References Cited (Backward Citations)
No citation records indexed.
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