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Absolute encoders are position feedback devices that report absolute positional information. An absolute encoder generates a unique code for each position. Absolute encoders do not lose position when power is removed. Since each position is unique, true position verification is available as soon as power is up. It is not necessary to initialize the system by returning to home base.
In a single turn encoder, the output codes are repeated for every revolution of the encoder shaft. There is no mechanism to indicate whether the encoder had made one revolution or several revolutions. All that is output is the relative position. Single turn absolute encoders are used when full range of positioning in the application is not greater than one full revolution (360 degrees) of the encoder shaft an example is rotary table positioning.
Incremental encoders work by providing a certain amount of pulses in the encoder's rotation to give distance and speed feedback for motor applications.
The incremental encoder provides specific pulses for the encoder rotation, and these pulses may be in one or two lines of pulses. These lines are typically designated as "A" and "B" channels, and the offset phasing of the channels, which is also known as the quadrature, helps determine rotation. The signals are created by a sensory array inside a printed circuit board, and the rest of the incremental encoder includes a spindle assembly and cover.
Incremental encoders are useful for light-duty, heavy-duty and industrial applications.
The spindle encoder is mainly applied to CNC machines.The sychronis pulses from encoder is collected by CNC system and then the feeding data of tools are sent to servo motor to perform the motion.
The magnetic ring encoder, based on advanced magneto-electric induction technology, is widely used in automation control and measurement.It is mounted to CNC spindle directly without synchronous wheel transmission.
Features:Non-contact sensing technology between readhead and ring;multiple rings demensions for wide applications;could be used in harsh environment;IP 68 for readhead.
Hand pulse generator is an optical rotary encoder developed for manual pulse input for CNC machine tools, which is also known as electronic hand wheel, MPG handwheel, MPG, hand holding box and so on. Widely used in CNC machine tools for setting the mechanical work origin and manually stepping trimming. The band switch on it is used to select the axis and magnification. Pulses from the pulse generator is to facilitate the acquisition system.
According to the supply voltage, resolution and signal output, it results in a CNC control system applicable to all types of hand-held unit.
With impact resistant shell made of high strength materials, MPG has the function of anti-interference, abrasion resistance and oil-proof. It is suitable for CNC machine tools and automation systems, compatible with a variety of brands of CNC system. For example, SIEMENS, MITSUBISHI, FANUC, FAGOR, NUM, HEIDENHAIN, LNC, SYNTEC, KND, GSK, SKY, etc.
A manual pulse generator (MPG) is a device normally associated with computer numerically controlled machinery or other devices involved in positioning. It usually consists of a rotating knob that generates electrical pulses that are sent to an equipment controller. The controller will then move the piece of equipment a predetermined distance for each pulse.
The CNC handheld controller MPG Pendant with x1, x10, x100 selectable. It is equipped with our popular machined MPG unit, 4 axis and scale selector, emergency stop and reset button.
Draw-wire displacement sensors measure linear movements using a highly flexible steel cable. The cable drum is attached to a sensor element which provides a proportional output signal.
Measurements are performed with high accuracy and high dynamic response. The use of high quality components guarantees a long life cycle and high operational reliability.
We offer a wide selection of draw-wire displacement sensors with numerous types of output signal. This means that each customer has the opportunity of selecting the best sensor for his application.
An incremental encoder is coupled to a spring loaded-reel through the use of a mechanical coupling device, internal to the housing of the reel. As the shaft rotates, pulses are evaluated and counted by a juding circuit and a counter to determine rotating direction and pulses number.The starting point of counting can be set arbitarily, infinite accumulation and measurement of multiple turns are achievable. When the number of pulses is fixed, by means of A and B signals of 90phase difference, the original number of pulses id doubled or quadrupled to increase resolution.
The band switch is widely applied to NC processing machinery, NC automation machinery, and instruments.The switch moves the postition of gear and outputs stable digital signals and controls the mode, sindle rate and feed rate of CNC machine control panel.
Features:
Miniaturization: 33.6 * 36.3mm
Rear operating panel length 25mm
Above 50, 000 times guarantee
The closed integration structure: oil-proof, dust-proof, water-proof
Fewer wirings, time and effort saving
Easy setting, transform screws position to adjust the settings
Gold-plated double contacts ensure the stability and reliability.
Five rotation angles:13.85, 15, 20 27, .69, 30.
Four digital modes: binary (positive and inverse) code, hexadecimal (positive and inverse) code (Error signal prevention)
Firm and reliable, Knob strength:3Nm
Waterproof grade: IP 40 non-waterproof; IP 65 waterproof
Coupling is a mechanical part, used to connect two different shaft (drive shaft and the driven shaft) to rotate together to transmit torque. In the high-speed heavy-duty power transmission, some couplings also have the functions of cushioning, vibration and improving the dynamic performance of shafting. Composed by two coupling halves, respectively, with the drive shaft and the driven shaft coupling. Most of the general power machine by means of couplings to connect with the machine.
A linear encoder is a sensor, transducer or readhead paired with a scale that encodes position. The sensor reads the scale in order to convert the encoded position into an analog or digital signal, which can then be decoded into position by a digital readout (DRO) or motion controller.
A digital read out (DRO) is a display unit which reads the signals generated by the linear encoder (or less frequently by rotary encoders) installed to several machine axes, using them to keep track of workpiece position (milling and the like) or tool position (lathes and grinders).
