10 Questions You Should to Know about NC Servo Feeder

The coil feeder is an indispensable auxiliary automatic feeding machine for the automatic operation of punching machines. There are many types of coil feeders due to their wide variety, the wide range of applicable materials and the different processing processes. This article will give a brief analysis and summary of the working principle and characteristics of the coil feeder. Basic information about the coil feeder will be highlighted in this article.

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·How does the coil feeder work?

·The main advantages of coil feeders.

·Frequently asked questions about using the coil feeder.

How does the coil feeder work?

The uncoiling machine is driven by the output shaft of the punch, which pulls the rocker arm of the roller, which drives the drive shaft. A one-way device converts the power of the reciprocating drive shaft into a one-way feeding movement of the feeding rollers, while the roller feeder is equipped with a brake device to prevent the feeding rollers from backing up. decoiler works with very low vibration and noise, and is particularly suitable for long bars and precision workpieces.

The feeder mainly consists of a dividing device, conveying wheels, drive rods, supports, control circuits and other parts. It is worth noting that there are some subtle differences in the working principle of the different types of feeders, but the overall principle is much the same.

The main advantages of coil feeders.

·Compact design

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The coil feeder is simple and economical in construction. This design ensures that it has a low failure rate and is easy to maintain. In general, the coil feeder has a service life of at least 5 to 10 years.

·High working efficiency

The coil feeder has an easy-to-use operating panel with keypad numeric codes for feed length and feed speed, which can be set at the operator's discretion for quick and easy operation.

These are the main advantages of the coil feeder. In summary, the coil feeder is suitable for feeding materials of varying thicknesses and lengths. coil feeder feeding lines are flexible and can be adapted to a wide range of materials.

Frequently asked questions about using the coil feeder.

After a period of use, the coil feeder may develop the following problems if it has not been maintained in a timely manner. Firstly, the feeder vibrates a lot when working. This can occur if the raw material is too curved, if the raw material is not chamfered, or if the centre is misaligned. In addition, if the coil feeder does not start. This is because the power supply is not connected to the countermeasure and we need to check carefully that the power supply is connected.

Symptom Possible Cause Corrective Action Alarm 702 V AXIS POSITION ERROR The trolley hit an obstruction. Adjust the charging tray. A bar is stuck. Clear bar path. Alarm 712 V AXIS SERVO OVERLOAD The belt skipped teeth. Grid offset/zero return and check for belt damage. The servo motor does not operate correctly. Troubleshoot the servo motor. Alarm 452 SERVO BAR MOTOR TIMEOUT The bar feeder lifter hit an obstruction. Remove obstructions from the lifter. The DC motor brushes are worn. Measure resistance of the DC motor. The proximity sensor does not operate correctly. (Load bar) Check if sensor state changes in the I/O page. If it does not. Measure voltage to the proximity sensor. There is no voltage to the DC motor. Measure voltage to the DC motor. Noise or electrical interference from high-power cables. Apply a ferrite bead to the sensor cables at the I/O board. Alarm 423 SERVO BAR EOB SWITCH POSITION The proximity sensor does not operate correctly. (EOB switch) Check if sensor state changes in the I/O page. If it does not. Measure voltage to the proximity sensor. Alarm 175 GROUND FAULT DETECTED Cables are damaged or there is a contaminated electrical connection. Check for connector damage. The brushes are contaminated or there is a carbon buildup. Check for contamination and remove dust. Alarm  (CHC) CHECK SENSOR OR BAR The proximity sensor does not operate correctly (Load "Q"). Check if sensor state changes in the I/O page. If it does not. Measure voltage to the proximity sensor. The belt skipped teeth. Grid offset/zero return and check for belt damage. Noise or electrical interference from high-power cables. Apply a ferrite bead to the sensor cables at the I/O board. Alarm  BAR FEEDER OUT OF POSITION The bar feeder is not latched into position. Relatch the bar feeder and check the pedal. The proximity sensor does not operate correctly (In position switch). Check if sensor state changes in the I/O page. If it does not. Measure voltage to the proximity sensor. Noise or electrical interference from high-power cables. Apply a ferrite bead to the sensor cables at the I/O board. Alarm BAR LOADER MECHANISM OUT OF POSITION The proximity switches have not been activated Inspect for proper function of the proximity switches, the associated cables and the trip flag located on the end of the bar loader mecahnism There is a mechanical blockage Inspect the bar feeder for mechanical failure or obstruction The motor or drive clutch are not functioning properly Test the function of the motor and check to see that the drive clutch is not slipping Noise or electrical interference from high-power cables. Apply a ferrite bead to the sensor cables at the I/O board. Machine generates multiple Alarm .1 SIO TOOL CHANGER PCB IS NOT PRESENT and .0 SIO TOOL CHANGER PCB PRESENT after the I/O TC PCB is installed.

The I/O or TC PCB firmware is outdated.  Update I/O Main and TC firmware version to the latest.  Refer to Next Generation Control - I/O PCB Main Firmware - Update. Intermittent Alarms: 452, (CHC), , . Noise or electrical interference from high-power cables. Apply a ferrite bead to the sensor cables at the I/O board. Noisy The bearing on the idle pulley is damaged. Check for bearing damage. Inconsistent push lengths Affected by previous push, pushrod timing delay, spindle liner size, chuck jaw size or grip strength. Troubleshoot the pusher. Bar used is too light. Contact Haas service department. Belt skips on motor pulley. Damaged belt or pulley. Troubleshoot the motor pulley and belt. Install Idler Pulley. See Belt Skipping - Idler Pulley Upgrade section below. Bent Push Rod A bar is stuck. Chamfer the bar, Orient the chuck. The bar feeder offset is incorrect. Zero return the bar feeder. Reset the bar feeder TC offset. There is a mechanical bind in the bar loader arm. Check for worn or bent components on the pusher assembly and arm supports. Push rod does not locate onto Cue Blade locating pins. Update to the Cue Blade Holder Block with Bull Nose Dowel Pins. The Push Rod Arms lower or raise out of sync. Check the Push Rod Alignment. If it is correct and the issue continues. Upgrade the Bar Feeder with the Haas Bar Feeder - Torsion Bar Upgrade Kit. This kit connects both Push Rod Arms together to keep them in sync when raising and lowering the Push Rod. Torsion bar is installed and the push rod is bending.

Check the Push Rod Alignment. If it is correct and the issue continues.

If the Torsion Bar assembly is factory installed or 93- or 93-A - BARFEEDER TORSION BAR SERVICE KIT is installed. Upgrade to the 93-B - BARFEEDER TORSION BAR SERVICE KIT assembly by installing the following components:

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• 20- BULKHEAD BUSHING NON-DRIVE END BARFEEDER
• 20-A TORSION BAR ARM BARFEED

Torsion bar is installed and the push rod arms are not sitting flush in the push rod arm stops causing misalignment  Bar not detected Bar Feeder is not correctly aligned to machine. See the Alignment sections of Haas Bar Feeder - Installation - NGC Bar material is reflective. Spray paint or scuff the end of the bar.