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CNC Machining

Release time:2024-10-25 18:03:58 Number of views:276 Publisher:njjh Source:编辑部

1. CNC machining is a machining method that uses digital equipment and information to control the displacement of parts and tools to machine parts on a CNC machine. This is an effective way to address variable rapid prototyping components, low-volume parts, complex-shaped parts, and high CNC precision machined parts and achieve high-efficiency parts.


2. CNC machining is an efficient automatic machine tool, which consists of mechanical equipment and a numerical control system, and is used to process workpieces with complex shapes.


3. CNC machining centers are high mechanical and electrical products. After clamping the workpiece, the CNC machining system can control the CNC machine tool to automatically select equipment, automatically set up tools, and automatically change different programs such as spindle speed and feed rate.


4. Rapid prototyping CNC machining can continuously complete drilling and boring. Various processes such as milling, reaming and tapping greatly reduce additional processing time such as workpiece clamping time, measurement, and machine tool adjustment.


B.The history of the CNC process.


CNC machining technology is derived from the needs of the aviation industry. In the late 1940s, an American helicopter company made this proposal.


The original idea for CNC machine tools was that MIT developed a three-axis CNC milling machine in 1952. This CNC milling machine has been used to machine aircraft parts in the mid-1950s. During the 1960s, CNC machining prototyping and programming jobs became more mature and sophisticated.


Some large aerospace factories are equipped with hundreds of CNC machines, chief among them cutting machines.CNC machined parts include monolithic siding, beams, skins, bulkheads, propellers, aero-engine casings, shafts, disks, blades, and the unique chamber surfaces of liquid rocket engine combustion chambers. The initial stage of developing CNC precision machining is a CNC machine tool based on continuous trajectory and continuous trajectory control.


C.What is CNC machining used for?


1. CNC machining can be used to manufacture workpieces that are put into production on a regular basis. Market demand for some products is cyclical and seasonal. If a specific line is used, the gain is not worth the loss. The processing efficiency of standard equipment is too low, the quality is unstable, and the quantity is difficult to guarantee. After cutting the first batch (batch), the program and related product information can be retained in the CNC machining center. The next time the product is replicated, production can start with little lead time. The working time of the CNC machining center includes the preparation work time and the processing work time.CNC machining centers evenly distribute hours-long single-piece long machining to each workpiece, thereby reducing the average actual working time per production and greatly shortening the production cycle.


2. CNC machining can be used to produce high-precision workpieces. Some workpieces are not in great demand, but they are essential components that require high precision and short manufacturing cycles. Traditional technology requires multiple machine tools to coordinate work, resulting in long cycle times and low efficiency.


3. CNC machining can be used to produce batches of workpieces. The flexibility of CNC machining production is reflected in the rapid response to special requirements, which can quickly realize mass production to improve market competitiveness. CNC machining centers are suitable for small and medium batch production, and the minimum batch production when using CNC machining centers.


D.What are the types of CNC machining?


1. CNC drilling is a machining process that uses multi-point drilling to create cylindrical holes in a workpiece. In CNC drilling, the CNC machine typically feeds a rotary drill perpendicular to the surface of the workpiece, resulting in a vertically aligned hole with a diameter equal to the diameter of the drill in the drilling operation.


2. CNC milling is a machining process that uses a rotating multipoint cutting tool to remove material from a workpiece. In CNC milling services, CNC machines usually feed the workpiece into the cutting tool in the same direction as the cutting tool rotates. In contrast, in manual milling, the machine provides the workpiece with the opposite rotation to the cutting tool.


3. CNC turning is a machining process that uses a single-point cutting tool to remove material from a rotating workpiece. In CNC turning, a CNC machine (usually a lathe or lathe) feeds a cutting tool in a linear motion along a rotating workpiece surface. Removing material around the circumference until the desired diameter is achieved will produce a CNC-turned part with internal and external cylinders such as grooves, tapers, and threads. The operational capabilities of the turning process include leveling, facing, grooving, and thread cutting.


E.How does CNC Machining Work?


Although the CNC machining process offers a variety of functions and operations, the basic principles of the process are the same in every way. The necessary CNC machining process includes the following stages:


1. Design CAD models

2. Convert CAD files to CNC programs

3. Prepare the CNC machine.

4. Perform processing operations.



F. The advantages of the CNC machining process.


1. CNC machining usually has tool holders and tool magazines that can automatically change tools. The tool change process is automatically executed under program control. Therefore, operations are relatively concentrated. Process concentration brings huge economic benefits:


1. Reduce machine tool footprint and save shop floor.


2. Reduce or not use any intermediate links (such as intermediate inspection of semi-finished products, temporary storage, processing, etc.), thus saving time and human resources.


3. Automation, no manual tool control is required in the CNC machining process, and the degree of automation is high. The benefits are obvious.


4. During machining, CNC workers are excluded from machining most of the time, which is very labor-saving.


5. Machining automation of CNC machining eliminates worker fatigue, carelessness, estimation, and other human errors on common machine tools and improves product consistency.


6. Automatic tool change for CNC machined prototypes makes the machining process compact and increases labor productivity.


7. Although conventional general-purpose machine tools are flexible, they are inefficient. Instead, certain conventional machines are efficient. However, it has low adaptability to parts, high rigidity, and insufficient flexibility, and it is difficult to adapt to the fierce competition in the market economy.



G.Packing and Shipping.


1. Each product is carefully packed with bubble bags and packed in cartons. In order to cause scratches due to knocks, which will affect the quality and use of the product, we will use wooden boxes specially designed for export for packaging and transportation.


2. All products will be transported according to customer needs, such as express, air shipping, sea shipping, and railway shipping.


H.FAQs.


1. How can I get the quotation?

A:We send a quote based on drawing, quantity, weight, and material(a real sample is acceptable).


2. If I don't have the drawing, can you make a drawing for me?

A:Yes, we are able to make the drawing of your sample duplicate the sample.


3. What is your payment method?

A:Tooling:50% T/T advanced,50% T/T balance when sample approval.

Items bulk order:30% deposit T/T,70% balance T/T against the copy of B/L.


4. What kind of file format can you open?

A:PDF, IGS, DWG, X_T, STEP(STP).


5. What surface treatment can you do?

A:Including powder coating, sandblasting, painting, polishing, acid pickling, anodizing, enamel, zinc plating, hot-dip galvanizing, and chrome plating.


6. What is your way of packing?

A:Each product is carefully packed with bubble bags and packed in cartons. In order to cause scratches due to knocks, which will affect the quality and use of the product, we will use wooden boxes specially designed for export for packaging and transportation.


7. Do you have a sub-company overseas?

A:Yes, we have a sub-company in Michigan, USA.

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