The NC servo feeder, a third-generation feeding device, retains the roller clamping feed feature of its second-generation predecessor. This machine’s effectiveness is substantially dependent on the quality of its rollers and their manufacturing quality, which directly impact the accuracy of feeding, material surface smoothness, and the device’s longevity.

Recognizing the crucial role of the NC servo feeder’s rollers, one can’t help but wonder about the meticulous process behind their precision production. We, being a top-tier brand in the feeder industry, delve into the intriguing transformation of bearing steel into high-precision feeder rollers. Owing to the intricate nature of machine processing, we partition the process into the ensuing meticulous steps:

1. Selection of Raw Material

High-grade imported bearing steel, primarily sourced locally and with a diameter of Φ80mm (or 65mm for compact models like NC-200, NC-300, NC-400), is chosen as the base material. Adhering to technical department guidelines, this material is sawed on a dedicated machine, leaving a 5mm processing allowance.

2. Tempering Heat Treatment

The cut bearing steel is subjected to tempering heat treatment. An induction heating furnace warms the steel for the NC servo feeder to a bracket of 500-650℃. This phase considerably enhances the steel’s attributes, boosting its strength, malleability, and resilience, equipping it with excellent comprehensive machining performance.

3. CNC Machining

After tempering, CNC machine tools shape the bearing steel. Essential steps encompass adjusting the dimensions (as per the technical illustrations), crafting center holes at both ends, rough machining the exterior (reserving processing allowance on radial dimensions), and polishing the two ends of the rod.

4. Surface High-Frequency Quenching

Surface high-frequency quenching equipment treats the bearing steel. This procedure demands rapid heating to quickly attain the quenching temperature on the steel’s surface, followed by instantaneous cooling before the heat reaches the steel’s core, thus achieving partial quenching. This technique ensures the NC servo feeder roller maintains excellent toughness at its core while attaining high hardness and wear resistance on the surface.

5. Surface Rough Grinding

The NC servo feeder roller is subjected to surface rough grinding. During this phase, the roller’s radial dimensions should fall short of the dimensions specified by the machining drawings to make room for chrome plating.

6. Surface Chrome Plating

The roller undergoes surface chrome plating. By layering chromium plating (standard thickness at 0.15mm on each side) on the roller’s surface, the hardness, wear-resistance, heat-resistance, and corrosion-resistance of the roller can be amplified, leveraging chromium’s attributes.

7. Precision Grinding

In the concluding step, the NC servo feeder roller undergoes precision grinding. During precision grinding, all measurements must stay within the tolerances stipulated by the drawings, and the surface roughness must remain within the Ra0.16-0.32μm range. This ensures the roller’s runout and concentricity at bearing positions.

Precision production is the bedrock of feeder quality assurance. We leave no stone unturned in the manufacturing process and never jeopardize production standards to cut costs or meet deadlines. Commitment to the principle of dependable quality has fortified our reputation as a leading brand in the feeder industry.

NC Servo Feeder
NC Servo Feeder