- Case Studies
U.S Patent No. 6,148,976
This variation occurs due to an improperly over or under adjusted mechanical high-speed clutch, starter clutch or band brake. For example, if your cycle time on a job layout is planned at 2.0 seconds, you are more than likely losing 10% or more in productivity, or almost 200 parts per hour - with only 2 tenths variation in cycle time! Logan can guarantee cycle time repeat- ability over millions of parts, all without ever stopping the machine to mechanically adjust a clutch or band brake. Even better, if your layout completes the machining cycle in less than 50 hundredths, your set-up personnel can adjust the high and low shift points in degrees or hundredths to speed up the job.
Mechanical Roll or “Rollaway” clutches have a tendency to slip and grab at different points during speed changes and indexes - causing expensive tool breakage and downtime when the machine goes past low-point in high
-speed. Since Logan clutches improve cycle time repeatability, our low-speed clutch replaces the old-style roll clutch and enables set-up personnel to position tools closer to the work-piece, further reducing dwell time and overall cycle time.
View of a typical Davenport timing chart. As you know, Davenports rotate counter clockwise. The Logan Hi-Lo Retrokit enables your Davenport to enter into high speed a few degrees earlier (55 degrees vs. 60 degrees) and stay in high longer (95 degrees vs. 92.5 degrees), thereby allowing your machine to “get back into cut” much faster. It takes less time to get back into the cut, over a period of millions of parts – which increases your machines overall productivity using the same operator, machine and floor space.
Overall, these basic speed changes enable your Davenport to improve cycle time by 10%, and sometimes more depending upon the job.
Here are some other areas of savings based on user reports:
1. Speed and consistency of index.
2. Can be adjusted to any shift point (on-off) to optimize work cycle time.
3. No end thrust on starting and high-speed shafts, drastically decreasing the need for maintenance.
4. Snuber brake mounted on high speed shaft eliminates the need for a mechanical one
Additional parts produced per year - with Hi-Lo Retrokit 700,000
Total added revenue to company’s top line, utilizing existing machine, operator and floor space $42,000.00
Shown calculation is based on 10% increase in productivity - Varies by machine vintage
Now that your machine is equipped with a Logan Hi-Lo Retrokit, integration of simple, efficient controls is a breeze. That’s why we now include our CS2001XT16 as standard equipment on all factory supplied Logan Model B Hi-Lo’s. The XT16 displays cycle time, machine position in degrees or hundredths, and enables you to electronically program attachments and devices normally operated by cams and limit switches. This leaves you room to easily expand into more productivity enhancements such as broken-tool, short- part detectors, bar loaders and feeders. Call Logan for more details.
plus many more features - call for details
Each Logan Electrical, Mechanical, Pneumatic and Accessory kit is designed to save you time and money during installation. Kits are furnished with detailed mechanical, electrical and pneumatic schematics.
Call today for your FREE Logan Hi-Lo Retrokit justification worksheet or visit our Hi-Lo Retrokit Savings and input your own production data.