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Active Coils in a spring

The active coils are what make a spring a spring. We normally refer to the coils that open in an extension spring, the coils that deflect or close in a compression spring and the coils that twist or wind up/down in a torsion spring as "active". The active term should really be applied to any portion of a spring that stores and releases energy. In a straight lever, the portion that flexes would be considered active.

Newcomb Spring Of Canada Ltd

Cable Basics: Understanding Dynamic Load-Bearing Capacity

Choosing the best cable for an industrial application is one of the most critical design decisions of any complex automated system. That said, cable selection is often an afterthought and not given the time or respect it deserves. As the lifeblood of the system, cables and wires are vital to transmitting power and sending control signals and data across wide expanses in a timely and reliable manner. Here we take a look at some of the most important factors to consider when specifying industrial cable.

Lapp Canada Inc

Cable Basics: Understanding Dynamic Load-Bearing Capacity

Choosing the best cable for an industrial application is one of the most critical design decisions of any complex automated system. That said, cable selection is often an afterthought and not given the time or respect it deserves. As the lifeblood of the system, cables and wires are vital to transmitting power and sending control signals and data across wide expanses in a timely and reliable manner. Here we take a look at some of the most important factors to consider when specifying industrial cable.

Lapp Canada Inc

Connectors vs. Hardwiring

Many thousands of equipment manufacturers have switched from point-to-point (hard) wiring to connector-based cable assemblies in factory and process automation and control systems. Adopting progressive connectivity solutions has improved their unit costs and productivity. It allows them to turn around orders and complete installations much faster. With margins under increasing pressure, many OEMs have come to regard these benefits as a must-have. For many of their customers, the principal argument for connector-based wiring over hardwiring ¿ a lower total cost of ownership over the service lif...

Harting Canada Inc

Considerations for Medical Grade Foot Controls

Many factors should be considered when choosing a medical foot control for your device. Design Engineers must know that the operation of a foot switch is often very critical to a procedure, so the look of the pedal can not be the only consideration. Switch integrity and reliability has to be the most important factors due to the seriousness of the atmosphere it will be performing in.

Linemaster Switch Corp.

Digital vs. Linear Foot Controls

When referencing the word 'digital' as a characteristic of a foot control it simply means an on/off actuation. The digital on/off actuation of a foot pedal can be either a momentary actuation (step on, foot presses down to activate the pedal) or a maintained actuation (step on to actuate and remove foot, step on again and remove foot to turn off). Mechanical or Electronic lockouts are possible with digital foot controls to prevent the user from operating more than one pedal at a time on multi-pedal models.

Linemaster Switch Corp.

Electronic vs Mechanical Foot Controls

An electronic foot control is a pedal consisting of electronics versus mechanical components such as gears, potentiometers, and snap switches. In the world of foot controls the use of electronics is the wave of the future. The advantages of using electronics in the physical makeup of a foot switch greatly exceed the disadvantages. The no mechanical contact, no noise, more precise technology giving the user extreme confidence in the performance. Below is a list of pros and cons to keep in mind when deciding on whether or not to proceed with an Electronic Foot Control.

Linemaster Switch Corp.

FDA 510(k) Clearance

The FDA is arguably the most powerful governing body that regulates the medical industry in the USA. Linemaster has achieved FDA 510(k) Clearance on the IR Wireless foot control product line to prove to our customers that we are dedicated to providing a product that meets or exceeds the requirements of the FDA. The fact that Linemaster has achieved this certification means Medical Device Companies can concentrate on their core product and not the foot switch. Linemaster has the foot switch covered.

Linemaster Switch Corp.

Foot Switch Functions

When determining that a foot control is required for a particular application, one of the first questions that must be answered is "how many functions does the foot control have to perform?" The application often dictates this, which makes the decision for a designer fairly simple. The challenge arises when trying to incorporate those functions into an ergonomic and cosmetically pleasing foot control. Foot Control functions typically range from 1 to 10 functions, but medical applications rarely exceed 5.

Linemaster Switch Corp.

Guards and Shrouds

Some medical applications, such as the medical laser industry, require that the foot pedal have a guard-shroud that covers the pedal to help prevent inadvertent actuation. Most applications don¿t have such requirements, but users may benefit from having a guard-shroud to cover their foot as it will provide protection as well as offer the hidden feature of a toe loop that would allow the operator to position the foot switch with their foot.

Linemaster Switch Corp.

Harting History

The rectangular connector made its debut almost 65 years ago, reflecting a growing trend in machine design at the time and starting one of its own. Machines were becoming increasingly complex. No longer was machine control just a matter of plugging a power cord into an electrical outlet and flipping the on/off switch. Manufacturers were developing more elaborate power distribution and control systems and locating critical components in control cabinets outside the machine. Connectors provided a logical bridge between the cabinet and subsystems inside the machine. Few connectors were accepted a...

Harting Canada Inc

IP Rating Considerations for a Foot Control

Ingress Protection (IP) ratings are developed by the European Committee for Electro Technical Standardization (CENELEC) (NEMA IEC 60529 Degrees of Protection Provided by Enclosures - IP Code), specifying the environmental protection the enclosure provides.

Linemaster Switch Corp.

Material Makeup of a Foot Control

The material makeup of a foot control assembly can be very simple depending on the application or very detailed if a more sophisticated solution is required. Some single pedal foot control enclosures can be comprised of one type of material, polymeric plastic for instance, and other single or multipedal enclosures require a mixture. All of this is subject to the OEM¿s suggestions or requirements, which could certainly determine the exact material you need.

Linemaster Switch Corp.

Measurement of Transparent Objects Using Laser Displacement Sensors

Transparent measurement targets, such as glass and films, have to be measured with non-contact sensors inline, since they are easily scratched by contact. This paper briefly describes a versatile method to measure transparent objects without contact, principles of transparent measurement, refractive index correction and gives some typical examples.

Keyence Canada

Medical Standards

When designing a medical foot control there are many things that must be into account. Certain criteria must be followed in order to produce an interface that meets the standards set forth by the Medical world. Deciding on things such as paint type and the weight of the foot switch may seem minor, but they can be critical to the acceptance of it in the field. Thinking of the end user and their surroundings will help in creating a foot control that is not only aesthetically and ergonomically pleasing, it will also be a functionally safe and reliable interface for them.

Linemaster Switch Corp.

Performing Inline Diameter Measurement in a Wire Drawing Process Using Optical Micrometers

A typical wire drawing process makes extensive use of lubrication to achieve good surface finish and extend die life. Those lubricants include oil, dry soap or sometimes ultrasonic vibration of the die. This paper briefly describes how the latest optical micrometers perform high accuracy non-contact measurement in such harsh environments.

Keyence Canada

Physical Attributes of a Foot Control

When designing a new foot switch there are many things that you must factor in, but surprising the simplest things could end up being the most important to the end user. The ergonomics, weight, and measurements of a foot control should weigh heavily in the beginning stages of the design.

Linemaster Switch Corp.

Reliable VFD Cables Boost Productivity, Minimize Downtime

From fans and blowers to 24/7 production line equipment, variable frequency drives (VFDs) are a mainstay of the industrial world due to their remarkable ability to improve the efficiency of motor-driven equipment. As part of a complete VFD package, high quality cable is one of the most important components in terms of achieving maximum productivity and minimizing downtime. When designing a robust VFD cable, the materials used in its production are critical to ensuring that the cable¿s electrical properties will guarantee peak performance. For system engineers and others involved in specifying ...

Lapp Canada Inc

Reliable VFD Cables Boost Productivity, Minimize Downtime

From fans and blowers to 24/7 production line equipment, variable frequency drives (VFDs) are a mainstay of the industrial world due to their remarkable ability to improve the efficiency of motor-driven equipment. As part of a complete VFD package, high quality cable is one of the most important components in terms of achieving maximum productivity and minimizing downtime. When designing a robust VFD cable, the materials used in its production are critical to ensuring that the cable¿s electrical properties will guarantee peak performance. For system engineers and others involved in specifying ...

Lapp Canada Inc

Right hand vs. left hand spring wind and direction

The direction of wind of a spring can be determined by simply holding it in your hand with your fingers placed around the outside of the body and your thumb pointing straight up. If the last coil ends in the same direction that your fingers are pointing, that is the hand (direction of wind) of the spring. In the US most screws are right hand. As you turn the screw clockwise it moves away from you. This is very similar to a spring.

Newcomb Spring Of Canada Ltd

Spring Rate - What is it & how do I determine spring rate?

SPRING RATE - WHAT IS IT & HOW DO I DETERMINE SPRING RATE? 1. Deflect* the spring approximated 20% of the available deflection and measure the load (P1) and the height (L1). 2. Deflect* the spring approximately 80% of the available deflection and measure the load (P2) and the height (L2). 3. Calculate the rate (lbs/inch) or (N/mm) by using the following formula: R = (P2 - P1) (L1 - L2) where R = Rate, P = Load, L = Load Length *To deflect a spring one would apply or remove an external load, causing the spring ends/arms to move.

Newcomb Spring Of Canada Ltd

Spring and Metal Form Technical Article

There are basically four (4) types of ends on helical compression springs: closed & ground, closed & not ground ends, open & ground ends and open & not ground ends. A spring with closed ends and not ground is the most economical to manufacture and often performs well when the wire size is smaller than .020 and/or the spring index exceeds 12:1.

Newcomb Spring Of Canada Ltd

The Next generation of Advanced Robotics

If you work with robots, you¿ve noticed them getting faster, smaller for a given load capacity and more advanced in their overall capabilities. At the same time, today¿s robots have increasingly stringent uptime requirements.

Lapp Canada Inc

The Next generation of Advanced Robotics

If you work with robots, you¿ve noticed them getting faster, smaller for a given load capacity and more advanced in their overall capabilities. At the same time, today¿s robots have increasingly stringent uptime requirements.

Lapp Canada Inc

Wired versus Wireless foot controls

Wired foot controls have been around for decades. Linemaster created its first wired foot switch in the 1950's and have been adapting to customer requirements and incorporating technological advances ever since. To date, using copper conductors (physical wires) to transmit electronic signals is the most reliable way to transmit or receive data. Technological advancements with wire have helped control issues such as interference in the field. This interference has been remedied by the cable manufacturers by adding a shield to the cable, ultimately protecting the communication between the end us...

Linemaster Switch Corp.

hybrid Cables Handle Servo Power and Feedback

Of all the components that make up an effective servo system, the power and signal cables don¿t get much attention. Yet the cabling plays a big role in the system¿s performance and lifecycle cost. That role is about to get even bigger, thanks to an emerging digital communications interface for servo systems.

Lapp Canada Inc

hybrid Cables Handle Servo Power and Feedback

Of all the components that make up an effective servo system, the power and signal cables don¿t get much attention. Yet the cabling plays a big role in the system¿s performance and lifecycle cost. That role is about to get even bigger, thanks to an emerging digital communications interface for servo systems.

Lapp Canada Inc