"We have reduced the time that it takes for a job to go through the shop. It helped us get control of the schedule, by reducing the scramble of jobs in the shop. Now we do them in order and everyone in the company knows when to expect a job to be worked on and ready to ship." Steve, WI.If you browse the various VSS testimonials, case studies, and results that custom job shops have reported you'll discover that none of the VSS clients are making widgets. None of these shops are doing high volume work of the same widgets over and over. One thing that VSS clients have in common is that they do NOT produce the same things over and over again. While some jobs, may on occasion, repeat for some of them (or they may make a few things to stock), others don't do any repeat work at all. Job shop scheduling in a custom manufacturing shop is a challenge, to say the least! But it is this environment that Velocity Scheduling System was developed for. You'll also notice that in some of the testimonials the specific shop is NOT identified. Why? Well, Steve in WI and many others don't want their competitors to know how they've managed to gain a competitive advantage. How is it that they can get more jobs done faster with the same people and resources? How is it that they've improved on time delivery? How are they more cash flush and more profitable? To get the results that Steve got or that any of our clients have gotten, you don't need any job shop scheduling software. VSS is NOT software. It is a manual, visual scheduling system. It will work with any ERP software you may use, no ERP, QuickBooks, Excel or whatever software your using now.
Sunday, May 28, 2017
Job Shop Scheduling for a Custom Material Handling Equipment Manufacturer
By Dr Lisa Lang
Here's yet another Velocity Scheduling System testimonial. This highly custom job shop makes custom material handling equipment.
The Goal by Goldratt is on Amazon Top Executives Book Club
By Dr Lisa Lang
This article is copyrighted by Science of Business, Inc. 2013
In an interview with Amazon CEO Jeff Bezo, Jon Fortt for CNBC reported:This summer he (Amazon CEO Jeff Bezo) spent time at Lab126, a Silicon Valley outpost about a mile from Apple headquarters where Amazon engineers hash out hardware designs. And he also hosted three all-day book clubs with Amazon's top executives, capped by nice dinners at the end. Bezos said he used the books as frameworks for sketching out the future of the company.The Goal was originally published in 1984 but is still very relevant today. And, as you likely know, it take place in a machine shop. Many job shops and machine shops use The Goal as their Bible. The only problem is that most have no idea how to apply it to their unique shop. Well, I have good news. If you own or manage a highly custom job shop or machine shop and want to apply what you read in The Goal to YOUR shop, you can do that with expert guidance very inexpensively. Just check out the Velocity Scheduling System (VSS) Coaching Program. VSS is NOT software but a visual manual scheduling system developed specifically for highly custom job shops and machine shops which are typically low volume high mix environments where the constraint can move week to week or even day to day. Who's the expert that would guide you? Well that's Dr Lisa Lang. She is one of the foremost Theory of Constraints experts who has worked with Dr Goldratt and specializes in applying Theory of Constraints to highly custom job shops and machine shops. Check out Velocity Scheduling System here: www.VelocitySchedulingSystem.com When you're there check out the free webinar called "How to Get More Jobs Done Faster". You'll be glad you did!Which books? Bezos was kind enough to share the titles.
Read the entire story here: https://www.linkedin.com/pulse/20130925133311-291225-amazon-ceo-jeff-bezos-had-his-top-execs-read-these-three-books
- The Effective Executive by Peter Drucker
- The Innovator's Solution by Clayton Christensen
- The Goal by Eliyahu Goldratt
Thursday, May 25, 2017
Drum Buffer Rope
Theory of Constraints Drum Buffer Rope
Drum Buffer Rope (DBR) was developed by Eliyahu M. Goldratt (Eli Goldratt), the father of Theory of Constraints. His book The Goal tells a story of a plant manager applying the drum buffer rope concepts.
The drum is the constraint.
The resource that is limiting your output. Most shops typically only have one constraint at any point in time, but the issue is that for many custom job shops and machine shops the constraint can move as the mix changes. A constraint is any resources that had demand greater than it's available capacity. Any time lost on the constraint is output lost by the entire system. Increasing output at the constraint, increases overall output. Improving non-constraints has no effect on overall output. This is why measuring utilization everywhere makes no sense. Trying to 100% utilize non-constraints just results in too much WIP and the many issue associated with that.The buffer is measured in time.
It's the amount of work expressed in time (like days worth) prior to the constraint. We control this amount of work with the rope. By having a buffer of work in front of the constraint, we can ensure the constraint does not run out of work. The constraint is the only place where 100% utilization is a good thing! The buffer's job is to absorb variability. In traditional Drum Buffer Rope there are 2 buffers - one for the constraint and a shipping buffer. The one before the constraints is there to protect the constraint and the shipping buffer protects the due date. Simplified Drum Buffer Rope just has a shipping buffer. Drum is the same. Any buffers are divided into 3 zones - red, yellow, green. If the buffer is red we find out why. The buffer is sized so that it turns red about 5% of the time. For continuous improvement we track the whys so that we can reduce or eliminate our biggest disruptions to flow. These improvements to flow lead to less variability and needing less buffer!The rope is how we control the release of new work.
The idea is that if the constraint sets the pace, the drum beat, for the entire operation, then we should only release work at the rate that the constraint can consume it. If we release work faster than the constraint can consume it, then WIP (work in process) piles up and bad things begin to happen. (See Little's Law.) That's a brief Theory of Constraints summary of Drum Buffer Rope. The real challenge is figuring out how to make it work in YOUR shop. The plant in The Goal is a machine shop. It's not the most complex of cases, but it is a machine shop.Theory of Constraints Goldratt
Velocity Scheduling System was developed for the tough cases:- For the custom job shops and machine shops that run high mix and low volume work or prototypes.
- For the shops where the constraint or bottleneck moves based on the mix of work.
- For the shops that may not run many jobs twice but can also have a production job to fit in with everything else.
- For the shops that do repairs (in house or on-site) or emergency work.
- For the shops that don't have perfect employee or vendor performance.
- For the shops who don't have perfectly cross trained employees, but have jobs that require a particular machine.
- For the shops that produce a wide range of custom parts or products that have a wide range of lead-times, set-up times and outside processes.
- For the shops that may not have 100% quality performance and or yields that are less than 100%.
- And, for the shops who have customers call and change quantities, dates or both.
This article is copyrighted by Science of Business, Inc.
Wednesday, August 12, 2015
INFOGRAPHIC Job Shop Scheduling Example
job shop scheduling example Infographic – This video infographic shows sixteen examples of scheduling problems. You'll see from this video infographic why scheduling custom job shops and machines shops is such a difficult problem to tackle. View the infographic here: http://ift.tt/1IIpsjD See related articles here: http://ift.tt/1Mlg0oG Here are some other videos on job shops and scheduling you might like: https://www.youtube.com/watch?v=CYfMvmOK7b4 https://www.youtube.com/watch?v=zbpK2QxPjlc https://www.youtube.com/watch?v=LHHnZWKopvA https://www.youtube.com/watch?v=BRMDCRPGYBE Velocity Scheduling System is brought to you by http://ift.tt/1dH0pCe. Thanks for watching this video!
Click here for more info...
INFOGRAPHIC Job Shop Scheduling Problem
http://ift.tt/1IIpsjD job shop scheduling example Infographic – This video infographic shows sixteen scheduling problems. You'll see from this video infographic why scheduling custom job shops and machines shops is such a difficult problem to tackle. See related articles here: http://ift.tt/1Mlg0oG Here are some other videos on job shops and scheduling you might like: https://www.youtube.com/watch?v=LHHnZWKopvA https://www.youtube.com/watch?v=BRMDCRPGYBE https://www.youtube.com/watch?v=CYfMvmOK7b4 https://www.youtube.com/watch?v=zbpK2QxPjlc Velocity Scheduling System is a product of http://ift.tt/1dH0pCe. Thanks for watching.
Click here for more info...
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