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A CNC turning shaft usually has keys or keyways cut into it with splines to accommodate coupling fittings and other accessories on the shaft. Perpendicular holes known as shafts CNC may also be drilled.
The common types of CNC turning shafts are as follows:
Spline shaft
A spline shaft is a shaft with many parallel ridges or teeth (spline) for torque transfer, connecting it with other components, such as a hub or gearbox input. To achieve better friction and slip engagement, the splines are aligned with matching grooves. In the automobile industry, mechanical devices, agriculture, and most industry fields, spline shafts are popularly used.
Disconnected bearing shaft
A bearing shaft allows to rotate machinery through bearing supports, which diminish the friction of weighty loads or radial forces. It constitutes the core of many machine shafts observed in lathes or machine tools. Disconnected bearing shafts are also widespread.
Universal couplings connect two non-linear shafts. Therefore, the bearing shaft will be a coupling or a universal shaft in some circumstances. In either case, radial bearings support the shafts perpendicular to their centre lines.
Drive shaft with keyways
The force transmitting component in a machine is known as a drive shaft, also referred to as a propeller shaft in an automobile. Machine assemblies frequently use drive shafts that rotate at high speeds. Shafts that rotate at high speeds need to be balanced because they could cause excessive vibration at high speeds. Sometimes, internal spherical bearings are known as guib (guib is a colloquial word used in the automotive industry, frequently referring to rubber bearings that perform the same functions as guibs) bearings connect the drive shafts.
Hollow shaft
When torque is transmitted using an external shaft, the external is referred to as a hollow shaft. Hollow shafts are also common in machines. Generally, they are lighter than solid shafts.
Workpiece diameter:
The CNC lathe can process workpieces with a maximum diameter of 15cm and a minimum diameter of 0.5cm.
Workpiece length:
The length of the CNC turning shaft that can be processed is between 10cm and 1m.
Machining accuracy:
The machining accuracy of the CNC lathe can reach ±0.01mm, which can ensure the precise matching of parts and the quality of finished products.
Machining complexity:
CNC lathes can handle simple turning to complex machining such as threading, grooving, and zigzag machining.
Machining materials:
CNC lathes can turn various materials, including plastics, aluminum, copper, brass, carbon steel, stainless steel, etc. Some CNC lathes are equipped with special tools and fixtures that can process specific materials.
Automation:
Some advanced models are equipped with automatic feeding and discharging devices, which can realize automatic processing and improve production efficiency.
The maintenance of CNC turning shafts is crucial to ensuring their normal operation, stability, and lasting performance. Here are some general maintenance tips:
Regular cleaning:
Regularly clean the surface of the CNC lathe and workbench to remove chips, dust, dirt, etc. Ensure the cleanliness of the lathe, which can avoid scratching the surface of workpieces, tools, and equipment, and keep the device in good condition.
Lubrication system inspection and maintenance:
Regularly check the lubrication system of the CNC lathe. Ensure the oil supply is normal and the oil passage is unobstructed. Add lubricating oil according to the specified type and quantity to ensure the smooth operation of the bearing and reduce friction and wear.
Maintenance of the chuck and fixture:
The CNC lathes are often equipped with chucks or fixtures to clamp and fix workpieces. Regularly check and clean them to ensure their normal clamping and stability. Adjust the appropriate clamping force as required and avoid excessive force to prevent damage or deformation.
Tool maintenance:
Tools are important components of CNC lathes. Regularly check the sharpness and wear of the tools, clean them, and apply lubricating oil or anti-rust agent as needed, and ensure tools are in good condition and working properly.
Regular inspection and maintenance of relevant parts:
Including electrical systems, transmissions, slides, spindle bearings, seals, etc. Regularly check the tightness, sensitivity, and operational status of these components, adjust and repair them as needed to ensure their normal operation.
CNC machining shafts play a vital role in the proper functioning of several industrial machinery and equipment. Here are some applications of CNC shafts in various industries.
The following tips can help business buyers select the suitable CNC shafts for their needs and those of their customers.
Application requirements
First, they must determine the specific application requirements. They should consider the material used in the machine's construction, the diameter and length of the CNC shaft necessary for a perfect fit, and the environment where the machine operates. For example, if the machine will be exposed to high temperatures or moisture, they may need to get shafts made with special materials or coatings to withstand such conditions.
Quality and reliability
Business buyers should prioritize the quality and reliability of the CNC turning shaft. They should choose shafts that are precisely machined and manufactured with high-quality materials to ensure long-lasting performance. An excellent way to do this is to buy only from trusted suppliers and manufacturers with a proven track record in the industry. Buyers can also go the extra mile to check the manufacturer's quality control processes and certifications to ensure they meet the required standards.
Compatibility and customization
Ensure that the CNC shafts are compatible with existing equipment and systems. Consider the connection methods and dimensions, and make sure they will fit perfectly. If the customer needs a specific shaft design or configuration, it is necessary to discuss it with the supplier and explore customization options. Some suppliers may offer tailored solutions to meet unique business needs.
Cost-effectiveness and bulk purchasing
When it comes to selecting CNC shafts for a business rather than personal use, cost effectiveness becomes crucial. Compare prices from different suppliers, but ensure the focus remains on quality to avoid the pitfalls of selecting based solely on a low price. Consider buying in bulk to reduce unit costs and increase profitability. If there is no immediate requirement to purchase in bulk, it may be wise to negotiate better pricing terms for future orders at a minimum order quantity (MOQ).
Technical support and documentation
It's crucial to choose a supplier willing and able to provide technical support and assistance when needed. Ensure that the supplier offers proper documentation, including specifications, drawings, and installation guidelines. Access to comprehensive technical resources can help avoid costly mistakes during installation and equipment integration.
Q1: What are the benefits of using CNC shaft machining?
A1: The primary benefit of using CNC machinery for machining shafts is automation, which leads to faster production rates. Other advantages include reduced labor costs, high precision, design complexity, efficient material use, consistent product quality, low tolerance levels, and increased security.
Q2: What types of materials can CNC shafts work with?
A2: A CNC shaft machine can work with metal materials like carbon steel, stainless steel, brass, aluminum, copper, titanium, and alloys. The machine can also work with non-metal materials like plastics, polypropylene, and PVC.
Q3: What are some common applications of CNC shafts?
A3: CNC shafts are used to make parts for the following industries: automotive (drive shafts, cam shafts, crank shafts), heavy machinery (mixers, conveyor belts), medical (medical imaging devices, ventilators, pumps), marine (propeller shafts), and furniture (furniture hardware, handles).
Q4: What is the set up like for CNC shaft machining?
A4: The set up for CNC shaft machining requires the following steps: preparing the CNC machine, loading the shaft material, calibrating the machine, securing the material, setting up the cutting tools, and lastly, inspecting and testing.
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