In the first of this seven part series of thoughts on manufacturing constraints and scheduling, I started with a reference to Eli Goldratt’s The Goal. Along the way, we placed links to various online sources for more information. Obviously, the trove of information is deep. You really should check them out. In our own consulting [...]
Posts Tagged ‘bottlenecks’
On Manufacturing – Drum-Buffer-Rope: Final Thoughts – Part 7 in a Series of 7
Posted in Bidness, and Other Current Economic Realities, SERIES: Manufacturing: Drum-Buffer-Rope (8 posts), tagged bottlenecks, buffers, Donn Novotny, Drum Buffer Rope, Goldratt, Jim Therrien, Larry Lukasik, manufacturing, manufacturing software, scheduling, The Goal, theory of constraints on February 8, 2010 | 1 Comment »
On Manufacturing – Drum-Buffer-Rope: Scheduling & Buffers – Part 6 in a Series of 7
Posted in Bidness, and Other Current Economic Realities, SERIES: Manufacturing: Drum-Buffer-Rope (8 posts), tagged bottlenecks, buffers, Drum Buffer Rope, Goldratt, manufacturing, manufacturing software, scheduling, The Goal, theory of constraints on February 4, 2010 | Leave a Comment »
To properly manage an acceptable production flow, relative to the demands of your customer (and in pursuit of on-time, on-budget), a set of rules derived from our previous post’s key points can be established, based on Theory of Constraints logic. These points are intended to drive the logic of your MRP. You can find them here, [...]
On Manufacturing – Drum-Buffer-Rope: The Rope – Part 5 in a Series of 7
Posted in Bidness, and Other Current Economic Realities, SERIES: Manufacturing: Drum-Buffer-Rope (8 posts), tagged bottlenecks, buffers, capacity constraint resources, CCR, Drum Buffer Rope, Goldratt, manufacturing, manufacturing software, MRP software, scheduling, The Goal, theory of constraints on February 2, 2010 | Leave a Comment »
We looked earlier at identifying constraints, noting that it is fairly intuitive to observe that the constraint by definition is the weak link in the system. How do we improve the throughput at the constraint without unduly increasing the expense or cost of doing so? The answer lies in finite scheduling – The Rope, of [...]
On Manufacturing – Drum-Buffer-Rope: On Throughput and WIP – Part 4 in a Series of 7
Posted in Bidness, and Other Current Economic Realities, SERIES: Manufacturing: Drum-Buffer-Rope (8 posts), tagged bottlenecks, buffers, Drum Buffer Rope, Goldratt, Little's Law, manufacturing, manufacturing software, scheduling, The Goal, theory of constraints, throughput, WIP on January 29, 2010 | Leave a Comment »
Picking up from our prior post on Throughput… To get an ideal flow time for a complex assembly, use the version of Little’s Law that stipulates (stay with me here): Flow Time = Inventory / Throughput To estimate a flow time for an assembly process then, we measure the Inventory (in dollars) across the line [...]
On Manufacturing – Drum-Buffer-Rope: The Buffer – Part 3 in a Series of 7
Posted in Bidness, and Other Current Economic Realities, SERIES: Manufacturing: Drum-Buffer-Rope (8 posts), tagged bottlenecks, buffers, Drum Buffer Rope, Goldratt, John Little, Little's Law, manufacturing, manufacturing software, scheduling, The Goal, theory of constraints, WIP, work in process on January 27, 2010 | Leave a Comment »
The simple way, in theory, to resolve a constraint is to throw inventory ahead of it, right? After all, with enough material coming into the bottleneck, you never have to worry about it being in a wait state, with its consequent waste. That inventory is directly related to lead time, and thus, the ability to [...]
On Manufacturing – Drum-Buffer-Rope: The Drum – Part 2 in a Series of 7
Posted in Bidness, and Other Current Economic Realities, SERIES: Manufacturing: Drum-Buffer-Rope (8 posts), tagged bottlenecks, buffers, constraints, Drum Buffer Rope, Five Focusing Points, Goldratt, manufacturing, manufacturing software, scheduling, The Goal, theory of constraints on January 25, 2010 | Leave a Comment »
What’s a bottleneck? Every production system consists in one way or another of a series of discrete steps, right? We noted earlier that the rhythm of the production process is The Drum in DBR. Exceed the capacity of one step in the process, and you have a bottleneck. That’s not bad, it’s just natural. But [...]
On Manufacturing – Drum-Buffer-Rope: Part 1 in a Series of 7
Posted in Bidness, and Other Current Economic Realities, SERIES: Manufacturing: Drum-Buffer-Rope (8 posts), tagged bottlenecks, buffers, Drum Buffer Rope, Goldratt, manufacturing, manufacturing software, scheduling, The Goal, theory of constraints on January 21, 2010 | 2 Comments »
As alluded to in my prior post: With this entry, I’ll start a series of seven articles covering topics of interest to manufacturers. In particular, we’ll delve into constraints… Eli Goldratt’s The Goal… the use of Drum-Buffer-Rope and Theory of Constraints thinking to solve those constraints… and scheduling. Along the way we’ll point out a [...]
Manufacturing Constraints: When Scheduling and Capacity Don’t Meet
Posted in Bidness, and Other Current Economic Realities, SERIES: Manufacturing: Drum-Buffer-Rope (8 posts), tagged APICS, bottlenecks, buffers, Donn Novotny, Drum Buffer Rope, Goldratt, manufacturing, manufacturing software, Material Requirements Planning, MRP, scheduling, The Goal, The Goal Institute, theory of constraints, TOC on January 16, 2010 | 1 Comment »
A recent article in APICS Magazine reminds us of the complexity of accurately and efficiently planning production in the manufacturing environment, whether you’re in a continuous or a batch environment. As David Turbide, an independent consultant points out, traditional enterprise planning involves scheduling materials via Material Requirements Planning (traditional MRP) but seldom takes into account [...]
