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Exquisite Knurled Shaft CNC Machining Technology and Applications
Exquisite Knurled Shaft CNC Machining Technology and Applications
Knurled shafts are core components in the field of mechanical transmission. Their knurled surface structure serves both anti-slip and decorative functions, and they are widely used in industries such as instrumentation, hardware tools, etc. Their processing precision directly determines the product's service life and operational reliability. This article analyzes the core processing technology of knurled shafts from raw materials to finished products, providing professional reference for industry applications.
I. Core Overview of Knurled Shafts
Knurled shafts form regular patterns such as straight lines and mesh patterns on the surface of shafts through rolling. Their core function is to increase the coefficient of friction, facilitating grip or torque transmission. Commonly used materials are brass and stainless steel. Brass has good ductility and is easy to process, while stainless steel has high strength and corrosion resistance. Based on structure, they can be divided into straight-knurled, mesh-knurled, and half-knurled shafts to suit different application scenarios. High-quality knurled shafts must meet the requirements of clear patterns, precise dimensions, smooth surface, and stable anti-slip properties.
Exquisite Knurled Shaft CNC Machining Technology and Applications
II. Core Processing Flow
The core processing flow of knurled shafts is divided into five streamlined steps, focusing on key steps while balancing efficiency and precision.
(I) Raw Material Preparation
Select appropriate materials based on the application scenario. For standard applications, choose H62 or H65 brass; for high-strength applications, choose stainless steel or alloy steel. Use high-precision round bars with a diameter deviation ≤ ±0.05mm.
(II) Pre-treatment
Machine the end faces flat, drill the center hole, and polish to ensure the end faces are perpendicular to the axis. Roughly machine the outer diameter, leaving a 0.2-0.5mm finishing allowance to ensure roundness and coaxiality, avoiding uneven stress during subsequent knurling.
Precision machining of the outer diameter requires control of dimensions and surface roughness. Surface roughness Ra ≤ 12.5μm. Knurling is the core challenge. A suitable knurling cutter should be selected, and the knurling wheel should be aligned with the workpiece center during clamping. The principle of "low speed, high pressure, and stable feed" should be adopted, with the rotation speed controlled at 50-100 r/min.
(IV) Surface Treatment and Quality Inspection
Surface treatment mainly involves passivation. For special requirements, heat treatment or polishing can be performed without damaging the integrity of the pattern. Quality inspection covers dimensions, pattern, and surface properties. Unqualified products must be reworked or scrapped.
III. Key Points and Application Trends
Key points: Accurately calculate the allowance before knurling, control the rolling pressure and rotation speed, and adjust parameters according to material differences. Common problems such as random patterns and blurred patterns can be solved by optimizing the pressing pressure, changing the knurling cutter, and increasing the amount of cutting fluid.
Knurled shafts are widely used in many industries. Future processes will upgrade towards higher efficiency, precision, and intelligence. The application of automated equipment and precision testing technology will further improve product consistency, and customized processes can meet individual needs.
We are a manufacturer integrating industry and trade. We have more than 20 years of experience in production technology. We are located in Dongguan City, Guangdong Province, China. We have advanced high-end professional production and processing technology, and are committed to innovative R&D and production. After years of market tempering and exploration, it has high-quality technical management personnel, experienced designers, R&D personnel and a perfect company management system cnc precision.
5-axis CNC workshop
Our factory has a plant area of about 2,000 square meters and masters core processing technologies. It has high-end precision production equipment cnc precision: CNC lathes, 5-axis CNC, 4-axis CNC, stamping equipment, die-casting equipment, etc. 2.5-dimensional detection equipment
Product Packaging
Packaging Details
Commercial packaging: 1pc/plastic bag + color box +carton + pallet;
Industrial packaging: (1). plastic tube + carton + pallet; (2). plastic bag + kraft paper + carton + pallet;
According to the requirement of customer.
FAQ
Q1: Where can I get product & price information?
A1: Send us an inquiry e-mail, we will contact you once we received your mail.
Q2: How long will I get the sample?
A2: Depends on your specific items, within 3-7 days generally.
Q3: What kinds of information do you need for a quote?
A3: Kindly please provide the product drawings in PDF, if provide in STEP or IGS will be better.
Q4: What are the payment terms?
A4: We accept 50% as a payment deposit, when the goods are prepared, we shoot photos or videos for your check, and then you can pay the balance. For small quantities, we accept Paypal, the commission will be added to the order. For big amounts, T/T is preferred.
Q5: How to deliver the goods?
A5: We deliver the products by courier company.
Q6: Are you a trading company or factory?
A6: We are factory direct with 17 experienced engineers and more than 50 employees as well approximate 3,000m2 workshop area.
Q7: What shall we do if we don't have drawings?
A7: Please send your sample to our factory, then we can copy and provide you better solutions. If send us pictures or drafts with dimensions(Length, Height, Width), CAD or 3D file will be made for you.
Q8: Can we get some samples before mass production?
A8: Absolutely yes.
Q9: Will my drawings be safe after sending them to you?
Q10: Is it possible to know the operation status of my products without visiting your company?
A10: We will offer a detailed production schedule and send weekly reports with digital pictures and videos which show the machining progress.
