A lean machining system is similar to a transfer line but it uses a single piece flow.
7/27/2018
Lean Transfer Machine Performs Turning, Boring, Milling
IMTS 2018: Gnutti’s Piccola lean transfer machine is designed for high flexibility, productivity and reconfigurability.
22 upper spindle units, 12 radial double-spindle units and 22 lower spindle units with as many as five CNC axes. Spindle speed ranges to 24,000 rpm.
https://www.mmsonline.com/products/lean-transfer-machine-performs-turning-boring-milling
https://www.gnuttitransfer.com/prodotti.php?coll_id=5&cat_id=9&lang_id=2
An Example of Lean and Cost Reduction in Machining
A part made of MIC-6 Aluminum Plate.
The company, Tier ONE was given a goal to reduce the overall cost of this component for a new instrument by 30%, in order to match offshore costs without compromising on the current delivery quality. The part was previously manufactured on a 3-axis vertical machining center in 3 operations with a total cycle time of 160 minutes per part.
The company partnered with Mazak to co-develop the programming, process, and tooling for use on one of two existing Mazak HCN-5000s with a 24-pallet Hi-Rise Palletech system and a 330 Tool Hive. 2-sided tombstones were used on each pallet, and due to the multi pallet systemm the fixture were there all the time eliminating additional set-up time. Also, the solution used only two operations to make the part. The cycle time became 19 minutes each, The targeted 30% savings was achieved.
(Lean reduction of cost while maintaining quality. Actually Taylor strongly said it in 1903 itself.)
https://tieronemachining.com/continuous-improvement-quality/lean-manufacturing/
Quality Control Gets Automated
Numerous manufacturing throughput processes have been automated over the years in an effort to reduce delivery times. For a variety of reasons, however, quality control has remained a manual process in many industries despite inroads made by vision systems. The arrival of automated quality check tools could change that.
David Greenfield, Director of Content
Sep 1st, 2011
OCT 2009
The Need for Lean Flow
In machine-based manufacturing, lean flow begins with the creation of process cells, and linking these cells together to synchronize production. (Firsts of two parts.)
By Preston J. McCreary
The best method for reducing lead time in a machining world is to get products to flow from process to process, using cells as the tool to link, synchronize, and eliminate all the waste of excessive material handling, excess inventory, and excess labor costs.
https://www.americanmachinist.com/machining-cutting/article/21898164/the-need-for-lean-flow
5/29/2004
MACHINING CENTERS
The Technology Of Lean Machining
This plant makes different choices for its machining cells depending on whether the parts to be machined there are known or unknown.
#leanmanufacturing
Cooper Cameron Valves plant in Little Rock, Arkansas.
Its lean transition goals include reducing product cost significantly, realizing a production process streamlined enough to allow any valve to be shipped within 7 days of receiving material. This plant's transition to lean focuses simultaneously on price, speed or inventory.
5/15/2000
VMCS - MACHINING CENTERS
Agile Or Lean?
When CNC machines are used for high-volume work, this question comes first.
A lean configuration of machining centers is suggestive of the dedicated transfer line’s approach to machining. The part stops at one machining center after another in sequence, and it receives nearly an equal portion of machining (in terms of cycle time) at each stop. The work can be moved from machine to machine using a loading and unloading vehicle, or parts can be moved from machine to machine by human operators.
https://www.mmsonline.com/articles/agile-or-lean
21.7.2021
29.8.2020
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