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Case Studies - screw machine
Logan self-adjusting, hydraulically actuated Bell Housing Power Take-Off (PTO) clutches have been standard equipment on OEM marine and mobile equipment for over 18 years. Thousands of Logan units are in the field, operating on airport snow blowers, highway and airport marking and runway rubber removal equipment, and more recently trailor mounted waterblasting equipment. 
Logan vs. Mechanical PTO’s
The advantage of the Logan Clutch is its ability to engage and disengage the water jetter hydraulically, through
push-button activation, eliminating the use of a mechanical hand lever or yoke type clutch engagement system, which dates back to the early 40’s. Smooth, Logan softstart™ engagement eliminates clutch downtime due to over and under adjustment. And since the Logan clutch is self-adjusting, clutch engagement is smooth and
consistent after hundreds of hours of use.
The mechanical clutch requires the operator to “hand engage” a clutch, which opens up the opportunity for untrained operators to slam the clutch into gear at high rpm’s. Another mode of failure is when operators will over or under tighten the adjusting collar on mechanical clutch to the point where the clutch is too loose and slips to failure or is over tightened and never disengages. Unfortunately, this happens during operating conditions, forcin
g the water jetter to return to the rental yard, leading to unproductive downtime, inconsistent operation and the endless frustration of machine renters, service center owners, and mechanics.
Making the Switch from Mechanical to Logan
Jetstream / FS Solutions Rental Center Makes the Switch from Mechanical to Logan
“Making the switch was easy”, says Richard Alderson of the FS Solutions, Hammond Indiana Office, “we pulled the old Mechanical Clutch and drive ring, along with all of the linkages, levers and yoke, and replaced the clutch with a Logan RP 314 Series clutch.” The Logan design uses the same shaft, drive ring and taper as the mechanical clutch, making the changeover relatively quick and easy. “All we had to do was install the Logan Bell Housing PTO Clutch, a power pack, and an on/off switch, and within a few hours we were ready for service” says Alderson. Logan Clutch would like to thank FS Solutions, of Hammond, IN for allowing them to retrofit the new self-adjusting PTO on the Jetstream X-Series unit.
Logan Push Button Actuation - Eliminates Mechanical Linkages 
Logan clutches are simple to operate. Push-button activation engages the clutch from a control panel or remote operating device. Hydraulic or pneumatic pressure via the Logan hydraulic power pack and maniford, clamps the cylinder and piston inside the clutch, which then engages the friction and steel separator discs with a Logan SoftStart™ feature - smoothly engaging the clutch. When pressure is removed, release springs separate the clutch, giving it ample running clearance while disengaged. Push-button, remote activation from a control panel, or cab is now possible.
Category: screw machine
Acme-Gridley Screw Machine Rebuilder Improves Cycle time by 33 Percent
Logan Clutch appreciates the valuable partnership that it has with BME and their ability to integrate Logan products with their capabilities to help customers reduce costs and improve
Logan XT16 Chip BreakerTM Software
Logan Clutch now offers Chip Breaker™ technology on its line of CS2001 XT16 Microprocessor Controls. Chip Breaker technology enables Acme, New Britain, Davenport and Wickman users to minimize or eliminate nesting of metal stringers that occur in the feed cycle (when making aluminum parts). This feature minimizes the need for operators to tend to or shut down the machine to clear chips. In addition to the Chip Breaker software settings, other factors must be considered and potentially modified. These are the feed rate and the tooling. Industry feedback is that it should take no more than 2-3 revolutions of the spindle to break the chip, whether you are using a chip breaker cam or our software. The feed rate must also be considered and keep in mind the back pressure of the feed, which varies during the cycle. Note that a hard coded timer is used in the logic that ensures the machine does not dwell for more than 1/2 second. This is done to avoid a machine lockup condition by using these features. p.p1 {margin: 0.0px 0.0px 12.0px 0.0px; line-height: 10.5px; font: 11.0px Helvetica} Chip Breaker™ technology is available as an option on new and existing CS2001 XT16 controls and is ideal for users of solid aluminum material. Typical CS2001 XT16 Hardware p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; text-align: center; line-height: 30.0px; font: 14.0px Helvetica; color: #005190} Ideal for Acme, New Britain, Davenport and Wickman Machines CS2001 XT16 features
Logan CS2001TM Controls Support Door Interlock / Start Interrupt Switches
OSHA rulings and regulations are requiring screw machine users to upgrade their machines with door interlock switches. The purpose is to ensure that the machine cannot be started when a door is open, and the main motor stops when a door is opened. The CS2001 control from Logan Clutch is a solution that has passed OSHA scrutiny in hundreds of machines. It works with the dedicated inputs of the CS2001 control and the three levels of programming security in the software. One security level is Set-up mode. Access to Set-up mode is controlled and secure. When a machine door is open it can only be jogged while in Set-up mode only. This enables CS2001 users to work in the tool zone, jog the machine and know that the machine cannot be started. CS2001TM Door Interlock / Start Interrupt Switch Inputs: How They Work The CS2001 Microprocessor Control has two pairs of inputs for two Door Interlock Switches. Each pair of is designed for one normally opened switch contact and one normally closed switch contact. The control senses both inputs together and has an override/defeat checking feature to monitor door input functionality. Simple Integration p.p1 {margin: 0.0px 0.0px 9.0px 0.0px; line-height: 10.5px; font: 11.0px Helvetica} p.p2 {margin: 0.0px 0.0px 6.0px 0.0px; line-height: 10.5px; font: 13.0px Helvetica; color: #005190} p.p3 {margin: 0.0px 0.0px 6.0px 0.0px; line-height: 10.5px; font: 11.0px Helvetica} span.s1 {font: 9.0px Helvetica; vertical-align: 3.0px} The Logan Clutch
World Wide Fittings-Davenport
Davenport model B screw machines upgraded with self adjusting air clutches to replace mechanical clutches leading to higher machine part output and production
