<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The first-priority directions for modern engineering, especially for multiproduct manufacturing, include the intensification of manufacturing processes, increasing the efficiency of technological equipment, and reducing the time required to implement technological solutions. Fixture design is a complicated and time-consuming process that requires considering many parameters of the closed-loop technological system “machine tool — fixture — cutting tool — workpiece”. One machined part can have several fixture layouts corresponding to all specified parameters; however, their effectiveness differs depending on production conditions. Search for an optimal fixture for specified production conditions is an essential stage of production planning. It has been proved that the efficiency of a manufacturing process should be assessed using single economic indicator — the cost of machining, which considers the costs of time, the total costs for process realisation, and a batch of parts. The paper aims to substantiate the efficiency of manufacturing processes in machining complex parts using flexible fixtures by developing a mathematical model that considers the cost of time, the cost of implementing the manufacturing process, and the batch value of parts production. This approach estimates the efficiency of manufacturing processes for machining complex parts and choosing the flexible fixture layout that corresponds to specific production conditions. It was proved that flexible fixtures could be effectively used for machining small batches of parts with frequent readjustments to new workpieces and short-term machining. A tendency has been established that the higher number of nomenclature of parts contributes to expanding the scope of the effective use of flexible fixtures.</p></abstract>

The first-priority directions for modern engineering, especially for multiproduct manufacturing, include the intensification of manufacturing processes, increasing the efficiency of technological equipment, and reducing the time required to implement technological solutions. Fixture design is a complicated and time-consuming process that requires considering many parameters of the closed-loop technological system “machine tool — fixture — cutting tool — workpiece”. One machined part can have several fixture layouts corresponding to all specified parameters; however, their effectiveness differs depending on production conditions. Search for an optimal fixture for specified production conditions is an essential stage of production planning. It has been proved that the efficiency of a manufacturing process should be assessed using single economic indicator — the cost of machining, which considers the costs of time, the total costs for process realisation, and a batch of parts. The paper aims to substantiate the efficiency of manufacturing processes in machining complex parts using flexible fixtures by developing a mathematical model that considers the cost of time, the cost of implementing the manufacturing process, and the batch value of parts production. This approach estimates the efficiency of manufacturing processes for machining complex parts and choosing the flexible fixture layout that corresponds to specific production conditions. It was proved that flexible fixtures could be effectively used for machining small batches of parts with frequent readjustments to new workpieces and short-term machining. A tendency has been established that the higher number of nomenclature of parts contributes to expanding the scope of the effective use of flexible fixtures.

Ensuring economic efficiency of flexible fixtures in multiproduct manufacturing

Engineering Management in Production and Services

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"Ensuring economic efficiency of flexible fixtures in multiproduct manufacturing"}

The first-priority directions for modern engineering, especially for multiproduct manufacturing, include the intensification of manufacturing processes,...

Fork-type design (according toFig. 4)	Name and code of the part	Batch size, pcs.	Manufacturing process	Cost, UAH	Comparative economic efficiency
a	Plug 99408076	30	Typical	1011.28	1.27
a	Plug 99408076	30	Proposed	797.38	1.27
b	Plug 3721-4511	40	Typical	782.12	1.05
b	Plug 3721-4511	40	Proposed	745.0	1.05
c	Plug 99408076-2	70	Typical	487.48	0.83
c	Plug 99408076-2	70	Proposed	587.86	0.83
d	Plug 73.02.34-01	100	Typical	369.62	0.68
d	Plug 73.02.34-01	100	Proposed	540.72	0.68
e	Plug 120.3-88.01.05	10	Typical	2844.62	1.86
e	Plug 120.3-88.01.05	10	Proposed	1530.72	1.86
a, b, c, d, e	Batch of parts	250	Typical	5495.11	2.5
a, b, c, d, e	Batch of parts	250	Proposed	2197.58	2.5

Ensuring economic efficiency of flexible fixtures in multiproduct manufacturing

Online veröffentlicht: 07. Mai 2021

Seitenbereich: 53 - 62

Eingereicht: 05. Okt. 2020

Akzeptiert: 10. März 2021

DOI: https://doi.org/10.2478/emj-2021-0004

Schlüsselwörter
flexible manufacturing, fixture design, multiaxis machining, cost of machining

© 2021 Vitalii Ivanov et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Comparison of the effectiveness of the proposed and typical manufacturing processes

Ensuring economic efficiency of flexible fixtures in multiproduct manufacturing

Online veröffentlicht: 07. Mai 2021

Seitenbereich: 53 - 62

Eingereicht: 05. Okt. 2020

Akzeptiert: 10. März 2021

DOI: https://doi.org/10.2478/emj-2021-0004

Schlüsselwörterflexible manufacturing, fixture design, multiaxis machining, cost of machining

© 2021 Vitalii Ivanov et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Comparison of the effectiveness of the proposed and typical manufacturing processes

Schlüsselwörter
flexible manufacturing, fixture design, multiaxis machining, cost of machining