CNC machine processing technology and latest offer cnc quote price!
In recent years, machining technology has become increasingly advanced, and the machining industry has entered a new phase with higher precision and faster efficiency. Today, we bring you the latest machining processes and pricing list. Take a look to see if your factory's prices are similar!
01 Different Machining Equipment
In machining, different equipment has its own unique capabilities, each responsible for specific tasks. Choosing the right equipment and using it effectively is key to improving efficiency and product quality.
1) Lathe
Lathes are the "old friends" of mechanical machining, mainly used for machining shaft and disc parts with rotating surfaces. By combining workpiece rotation with tool movement, it can accurately machine external and internal diameters and tapers. Lathes are versatile and can meet the machining needs of most parts, with a precision of up to 0.01mm. They are an indispensable "basic player" in the factory.
2) Milling Machine
Milling machines are mainly used for machining planes and grooves, with the spindle rotating to drive the tool to cut the workpiece. They are highly flexible and suitable for machining medium and small-sized parts, with a precision of around 0.05mm. They are often used for initial machining or moderate precision requirements.
3) Grinding Machine
Grinding machines are specialized equipment for precision surface machining. By using high-speed rotating grinding wheels, they can achieve extremely high surface finish. The machining precision of grinding machines typically reaches 0.005mm, and for small parts, it can even achieve a precision of 0.001mm. They are a key device for ensuring surface quality of workpieces.
4) Fitter
Fitters use traditional manual machining methods, including filing, sawing, drilling, and threading, suitable for small-batch production or detailed finishing of parts. Although CNC equipment is now widespread, fitters are still irreplaceable in the factory for complex part adjustments and assembly.
5) CNC Lathe
CNC lathes are the "efficiency kings" of modern production, combining the functions of traditional lathes with the precise control of CNC technology, making them ideal for machining high-precision parts. Through automated programming, they offer high efficiency and stable machining precision within 0.01mm, making them the ideal tool for complex parts and large-scale production.
6) CNC Milling Machine
CNC milling machines can handle complex-shaped products, with multi-axis linkage capabilities. They can not only perform conventional milling but also machine 3D surfaces and mold parts, with a precision of within 0.01mm.
7) Wire Cutting
Wire cutting machines are specifically used for machining high-precision holes and grooves. Slow-wire cutting can achieve a precision of up to 0.002mm, suitable for high-precision machining in the mold industry. Medium-wire cutting is suitable for slightly lower precision requirements, with a precision of around 0.02mm.
8) EDM Machine
EDM machines are specialized in processing complex, high-hardness materials, such as grooves, small holes, and irregular holes in molds. Since no cutting force is involved during the process, no burrs or tool marks are generated, ensuring quality. The precision can reach 0.005mm, making them a "master" in mold manufacturing and high-hardness material machining.
02 Process Flow
Machining is a rigorous yet intelligent process. Its core is the "process specification," a detailed operation guide that helps transform raw materials into finished products that meet requirements. The process specification is like a construction blueprint, clearly outlining each step of the machining process and ensuring efficiency and order.
The entire CNC machining process is typically divided into multiple operations, each further broken down into installation, station, step, and cutting actions. The quality of the process design depends on the complexity of the part, precision requirements, and production scale. For example, large-scale batch production may require efficient CNC equipment, while single or small-batch production may need traditional lathes or fitters for assistance.
Developing the process flow is a crucial step in machining. It must ensure the precision and surface quality of the part while maximizing efficiency. Additionally, the flexibility of the CNC Quote process specification is important to accommodate different machining needs.
Some Common Process Points:
Holes with a precision of less than 0.05mm cannot be machined with conventional milling and require CNC machining; through holes can also be machined with wire cutting.
Precision holes (through holes) after quenching require wire cutting; blind holes need rough machining before quenching and fine machining after quenching. Non-precision holes can be machined to specification before quenching (leaving a quenching allowance of 0.2mm on each side).
Slots narrower than 2mm require wire cutting, and deep slots (3~4mm) also require wire cutting.
Quenched parts should leave a minimum allowance of 0.4mm for rough machining, while non-quenched parts should leave an allowance of 0.2mm.
The coating thickness is generally 0.005~0.008mm, and machining should be done according to the pre-coating dimensions.
03 Process Time
Time standards are the time required to complete an operation and are a measure of labor productivity. Based on time standards, production schedules can be arranged, cost accounting can be conducted, and the number of equipment and personnel can be determined. Therefore, time standards are an important component of the process specification.
Time standards should be determined based on the production and technical conditions of the enterprise, ensuring that most workers can achieve them with effort, some advanced workers can exceed them, and a few workers can reach or approach the average advanced level.
As the CNC Quote production and technical conditions of the enterprise continue to improve, time standards should be periodically revised to maintain an average advanced level.
Time standards are usually determined by combining process engineers and workers, summarizing past experience, and directly estimating based on relevant technical data. Alternatively, they can be derived by comparing and analyzing the time standards of similar parts or operations, or by measuring and analyzing actual operation times.
Process Time = Setup Time + Basic Time
Setup time includes the time spent by workers familiarizing themselves with process documents, receiving raw materials, installing fixtures, adjusting machines, and dismantling fixtures.
Calculation method: Estimated based on experience. Basic time is the time spent cutting metal.
04 Pricing and Cost Calculation Methods
Machining pricing directly affects whether a company can survive. In such a competitive market environment, if a machining factory cannot make reasonable profits, the quality of the machining will definitely be affected. Therefore, industry players should focus on win-win cooperation, jointly promoting the machining industry towards high-quality and sustainable development, forming a virtuous cycle.
Processing Cost = (Material Cost + Processing Fee) * 1.2 [1.2 is the coefficient including management fees]
Equipment Cost = (Material Cost + Processing Fee + Purchased Parts Cost + Assembly and Debugging Fee + Design Fee) * 1.2 [1.2 is the coefficient including management fees]
Material Cost = Weight (Density * Volume) * Unit Price (RMB/kg)
Processing Fee = Process Time * Unit Price (RMB/hour)
Design Fee = Work Time * Unit Price (RMB/hour)
Japanese Purchased Parts Cost (RMB) = Purchase Price (JPY) / Exchange Rate
Domestic Purchased Parts Cost is based on supplier quotes
CNC Quote Pricing Reference:
Lathe: 60 RMB/hour
Milling Machine: 60 RMB/hour
Grinding Machine: 60 RMB/hour
Fitter: 80 RMB/hour
Machining Center: 60~120 RMB/hour
CNC Lathe: 60~120 RMB/hour
EDM Machine: 80~150 RMB/hour
Slow-Wire Cutting: 60~150 RMB/hour; Small parts start at 80 RMB, large parts by area: 0.06~0.08 RMB/mm²
Fine Hole EDM: Carbon steel, tungsten steel, Φ0.3 and above 1 RMB/mm, Φ0.3 below 2~3 RMB/mm; Φ0.3 and above 1.8~2 RMB/mm
Management Fee: Cost Price * 0.2
