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Assembly layouts and inherent flexibility of the d cell

Christina Hansson
Christina Hansson

Example of my ideas to increase flexibility and decrease downtime. Comparison with the D-cell published by FWRC.

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息 Christina Hansson 2014 Assembly layouts and inherent flexibility of the D-Cell I was trying to come up with a new layout, at least make some changes that could enhance flexibility, perhaps speed up the flow and ensure supply of details to two processing units, lets call them pressing units. Well, essentially, part number 1 has been assembled in another hall and then conveyed into this hall, at each unit A and B it is joined (by pressing) with the other part, number 2, at the point represented by 1+2. Originally, there was not a continuous conveying of number 1, but rather, transport vehicles loading at bulleted points (1). Number 2 was also fetched by vehicles and taken to A and B. STOP is the point where the assembled pieces are ready. In my proposal, we can see conveyor belts for number 1 parts, and this is not invulnerable, since only one line from the adjoining hall supplies two pressing units, but at least I made two alternate points where you can feed number 1 before going into pressing. Number two should have at least one supply line, one conveyor belt per pressing unit. These changes did not come about and I wondered if there was anything worthwhile about them. Now, talking flexibility, I came across an article describing the Double-D Cell much later. If you read that article, you can see how dividing the flow into two assembly cells made things more efficient and profitable, as I remember it. Here below are figures describing the first and the second improved layout. Maybe some similarities that I was unaware of. All in all, yes, you need to calculate wisely before changing your process lines, but I do think, most of the time, having several possible entry points and always at least two interchangeable lines, that is something that will ensure minimal downtime for each type of operation.
息 Christina Hansson 2014 Figures taken from: Hunter, S.L., S.H. Bullard, P.H. Steele, W.D. Motsenbocker. 2004. The double-d cell for assembling hardware in upholstered furniture production. Forest and Wildlife Research Center, Bulletin FP300, Mississippi State University. 13 pp. Download at: http://fwrc.msstate.edu/pubs/doubled.pdf Please e-mail with comments ( batorn(at)mac.com ) or post directly on the page. / Christina Hansson

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Assembly layouts and inherent flexibility of the d cell

  • 1. 息 Christina Hansson 2014 Assembly layouts and inherent flexibility of the D-Cell I was trying to come up with a new layout, at least make some changes that could enhance flexibility, perhaps speed up the flow and ensure supply of details to two processing units, lets call them pressing units. Well, essentially, part number 1 has been assembled in another hall and then conveyed into this hall, at each unit A and B it is joined (by pressing) with the other part, number 2, at the point represented by 1+2. Originally, there was not a continuous conveying of number 1, but rather, transport vehicles loading at bulleted points (1). Number 2 was also fetched by vehicles and taken to A and B. STOP is the point where the assembled pieces are ready. In my proposal, we can see conveyor belts for number 1 parts, and this is not invulnerable, since only one line from the adjoining hall supplies two pressing units, but at least I made two alternate points where you can feed number 1 before going into pressing. Number two should have at least one supply line, one conveyor belt per pressing unit. These changes did not come about and I wondered if there was anything worthwhile about them. Now, talking flexibility, I came across an article describing the Double-D Cell much later. If you read that article, you can see how dividing the flow into two assembly cells made things more efficient and profitable, as I remember it. Here below are figures describing the first and the second improved layout. Maybe some similarities that I was unaware of. All in all, yes, you need to calculate wisely before changing your process lines, but I do think, most of the time, having several possible entry points and always at least two interchangeable lines, that is something that will ensure minimal downtime for each type of operation.
  • 2. 息 Christina Hansson 2014 Figures taken from: Hunter, S.L., S.H. Bullard, P.H. Steele, W.D. Motsenbocker. 2004. The double-d cell for assembling hardware in upholstered furniture production. Forest and Wildlife Research Center, Bulletin FP300, Mississippi State University. 13 pp. Download at: http://fwrc.msstate.edu/pubs/doubled.pdf Please e-mail with comments ( batorn(at)mac.com ) or post directly on the page. / Christina Hansson