CNC Machining Services

Precision CNC Machining Services China – Custom CNC Parts Manufacturer & Machining Company

Need precision machined components? With over 15 years of experience, Diecasting-mould.com has grown into a reliable expert CNC machining company that offers quick-turn precision CNC machining services, involves CNC milling, CNC turning and CNC drilling processes. Multiple CNC machines including CNC machining center, 5-axis milling machines, CNC lathes, drills, and advanced measuring equipment ensure our in-house capacity to deliver your CNC machining parts with the most competitive prices, short lead time and on-time shipping. At Junying, both rapid prototyping and low/medium/high-volume production are available based on customers’ requirements. Our online CNC machining services also support one stop service from product design to finishing services, to help clients who just have a rough concept about the end-use CNC products. Fast send your CAD drawing to our email for requesting a free quote, we’ll analyze your file and give you a prompt reply.

Why Choose CNC Machining Services at Junying?

Wide Selection of Materials: We stock a variety of engineering-grade plastic and metal materials, ensuring that we can meet the specific needs of your project with the right material.
Precision & Accuracy: We specialize in CNC parts fabrication, delivering parts with accurate dimensions, tight tolerances, and high precision to ensure your parts fit and function perfectly.
Streamlined Design Process: Our online CNC design service and CAD file review accelerate product development, reducing costs and ensuring your designs are optimized for machining.
Quick & Responsive Support: We offer quick replies and feedback to address any issues or questions you have about the product drawings, ensuring a smooth and efficient development process.
Certified Quality Control: Junying is ISO9001:2015 certified, and we implement a strict quality control system throughout every stage of the machining process, ensuring high-quality, reliable parts every time.
Fast Turnaround Time: With an average 7-day turnaround and 99.85% on-time delivery, we ensure your parts are produced and delivered on schedule, keeping your project on track.

CNC Machining Services Capabilities

Work with our CNC services, a variety of production techniques will be employed to realize your expectations on the final CNC machining parts.

CNC Milling Services	a computer-controlled subtractive manufacturing process through which the materials are rapidly removed from the metal or plastic blocks using a rotary cutting tool, to create desired milling parts.
CNC Turning Services	a computerized subtractive machining process that cuts the metal or plastic block fixed on the machine using turning cutters or live tooling to produce turning parts with cylindrical features.
CNC Drilling Services	a cutting process controlled by computers, uses a drill bit to cut a hole of circular cross-section in solid materials.

Advantages Of Getting Custom Online CNC Machining Services

Online CNC machining services offer numerous benefits for both prototyping and production needs. Here are some key advantages:

Convenience: Online CNC machining services provide easy access to the entire process, from quoting to production. You can submit your design files, communicate with the supplier, and place orders—all from the comfort of your home or office, saving you time and effort.
Cost-Efficiency: With online CNC services, you can easily compare prices from multiple suppliers and choose the most cost-effective option. Additionally, online platforms often offer discounts, bulk pricing, and lower overhead costs, helping reduce overall production expenses.
Speed: Online CNC machining services typically offer faster turnaround times, enabling quicker prototyping and production. The streamlined process allows for more efficient scheduling, and with digital communication, revisions can be made promptly, ensuring your project stays on track and deadlines are met.
Customization: Custom online services allow you to specify your exact machining needs, from tolerances to material selection and finishes. Whether it’s a complex prototype or a high-precision production part, you can receive tailored solutions that meet your unique requirements.
Accessibility to a Wide Range of Materials: Online platforms often provide access to an extensive selection of materials—from metals to plastics, composites, and more. This enables you to choose the best material for your project, ensuring optimal performance and durability.
Real-Time Communication: Online CNC machining services allow you to communicate directly with engineers and machinists. You can discuss design concerns, request modifications, and receive feedback on your project instantly, improving collaboration and ensuring that the final product meets your expectations.

What Does CNC Machining Do?

CNC machining (Computer Numerical Control machining) is a manufacturing process that uses computerized controls to operate machinery like lathes, mills, routers, and grinders to cut, shape, or drill materials (typically metal, plastic, or wood) into precise shapes and sizes.

Precision & Accuracy: CNC machines can create parts with high levels of precision and repeatability, ensuring that each component is identical to the last, making it ideal for complex or tight-tolerance parts.
Automation: CNC machining is highly automated. Once the design is programmed into the machine, it can run with little human intervention, improving efficiency and reducing the risk of human error.
Variety of Materials: CNC machines are versatile and can work with a wide range of materials, including metals like steel, aluminum, and titanium, plastics, and wood.
Complex Geometries: CNC machines can create very complex shapes, curves, and intricate patterns that would be difficult or impossible to produce manually.
Cost-Effective for Mass Production: Once a CNC machine is set up and programmed, it can be used to produce large quantities of parts with minimal cost per unit, making it ideal for both small and large production runs.

How Does CNC Machining Work?

CNC machining works by using computer-controlled machines to perform a variety of operations on raw materials, such as cutting, drilling, milling, and turning, to create custom parts or products. Here’s a breakdown of how the CNC machining process works:

Design Phase (CAD): The process begins with creating a 3D design of the part or product using Computer-Aided Design (CAD) software. The design includes precise measurements, shapes, and features that need to be machined.
Conversion to CNC Code (G-code): The 3D design is converted into G-code (a programming language), which contains a set of instructions for the CNC machine. This step is done using Computer-Aided Manufacturing (CAM) software. The G-code directs the CNC machine on how to move, cut, and shape the material.
Set-Up: The raw material (often a block or sheet of metal, plastic, or wood) is placed securely on the CNC machine’s work surface. The appropriate tool (e.g., drill bit, milling cutter) is selected and mounted on the machine. Some CNC machines can automatically change tools, while others require manual setup.
Machining Process: The CNC machine follows the G-code instructions to perform various operations such as:
- Milling: Rotating tools remove material to shape the part.
- Turning: A rotating workpiece is cut with a stationary tool.
- Drilling: Holes are made in the material.
- Grinding: Fine details are added by grinding material away.
- Cutting: Laser or water jet cutting can be used for more delicate or precise cuts.
The machine moves the tool and workpiece in precise axes (usually X, Y, and Z), following the programmed paths to shape the material.
Monitoring & Adjustments: While the CNC machine works autonomously, operators may monitor the process to ensure everything is proceeding correctly. They can adjust settings if needed, such as speed or feed rate, to ensure optimal results.
Finishing & Inspection: Once the machining process is complete, the part is removed and inspected for accuracy and quality. This may include measurements with micrometers or CMM (Coordinate Measuring Machines) to ensure tight tolerances are met. Additional processes like polishing, deburring, or coating may be performed to finish the part.
Production Run (If Applicable): Once the part meets the desired specifications, the process can be repeated for mass production, with the CNC machine continuing to produce parts based on the same G-code program.

CNC Machining Materials Capabilities

We stock more than 30 types of high-quality metal and plastic materials for machining CNC components used in various industries.

Steel	4140, 4130, A36, 1018, etc.
Stainless steel	303, 304, 410, 17-4, 2205 Duplex, 440C, 420, 316, 904L, etc.
Aluminum	2024, 5083, 6061, 6063, 7050, 7075, etc.
Copper alloy	brass 360, 101 copper, 110 copper, 932 bronze, etc.
Plastic	POM (Delrin), ABS (Acrylonitrile Butadiene Styrene), HDPE, Nylon, PLA, PC (Polycarbonate), PEEK (Polyether Ether Ketone), PP (Polypropylene), PTFE (Polytetrafluoroethylene), etc.

Metal Surface Finishing Services for CNC Parts

For the best surface quality for your CNC machining and die casting parts, a series of surface treatment services are provided for selection. More than the following surface finishes are available if you have other needs.

Polishing	a finishing process through which to smooth the surface of an object using an abrasive or a work wheel
Sand Blasting	also known as sandblasting or abrasive blasting, is a process of applying high pressure to push solid particles across the object surface at high speed to alter the surface roughness
Color Electrophoresis	applying different colors on metal materials and products through electrophoresis techniques
Pad Printing	special printing methods to transfer the color and image that you wanted on surfaces
Rubber Casting	provide waterproofing for CNC machined parts and die castings in varying applications, available in different colors
Silk Screen Printing	involves printing ink through stencils, applying for hardware products
Anodizing	forming a thin layer of aluminum oxide on the exterior of CNC machined parts to increase the thickness and corrosion resistance
Plating	including chrome plating, nickel plating and more, to change the properties of the metal surface or build up thickness for undersized parts.
Passivation	use a light coat of protective material to create a shell for enhancing the corrosion resistance or reducing the chemical reactivity.

What is CNC Machining?

Computer Numerical Control machining, also known as CNC machining, is a subtractive manufacturing process that employs computer controlled machine tools to remove layers of materials from the stock and create the custom part through following a programmed instruction. A range of complex machinery from lathes and mills to drills and routers can be controlled to execute specific operations. So, the common types of CNC machining operations including milling, turning and drilling. CNC machining services can process metals, plastics, wood, glass, foam and composites according to the applications and machines. This process enables efficient production of high precision and high accuracy with the help of automation, also realizes cost-effectiveness in medium-volume production run.

FAQ

1. What Are Common Types Of CNC Machines?

CNC Milling Machines: Used for cutting and shaping materials with rotating tools.

CNC Lathes: Ideal for turning cylindrical parts with a rotating workpiece.

CNC Routers: Used for cutting softer materials like wood and plastic.

CNC Plasma Cutters: For cutting metal with high-velocity ionized gas.

CNC Laser Cutters: Use a focused laser beam for precise cutting of materials.

CNC EDM: Erodes material with electrical sparks for intricate designs.

CNC Water Jet Cutters: Use high-pressure water for cutting materials without heat.

2. How Does CNC Machining Differ From Traditional Machining?

CNC Machining and traditional machining differ in several key areas:

Operation: CNC machining is computer-controlled, automating the process, while traditional machining relies on manual operation by a machinist.

Precision: CNC offers higher precision and repeatability with tight tolerances, while traditional machining is more prone to human error.

Speed: CNC is faster and more efficient, able to run 24/7 with minimal intervention, whereas traditional machining is slower and more labor-intensive.

Complexity: CNC can easily produce complex parts, while traditional machining is better suited for simpler parts.

Labor: CNC requires fewer operators, mainly for setup and monitoring, while traditional machining needs constant manual control from the machinist.

CNC machining is more precise, efficient, and versatile for complex tasks, while traditional machining is more manual and suited for simpler, low-volume work.

3. What Are Your Inspection Options For CNC Machining?

At Junying, we offer a variety of inspection options to ensure the highest quality and precision for your CNC machined parts. Our inspection process is designed to meet your specific requirements and industry standards. Here are the inspection options we provide:

1. Visual Inspection: Checks for surface defects and imperfections.

2. Dimensional Inspection: Verifies part dimensions and tolerances using calipers, micrometers, and CMM.

3. Surface Roughness Measurement: Ensures the required surface finish.

4. Material Inspection: Verifies material properties using spectrometry and hardness testing.

5. Assembly Inspection: Confirms proper fit and function of assembled parts.

6. Functional Testing: Ensures parts perform under real-world conditions.

7. 3D Scanning: Captures precise geometry for comparison to CAD designs.

8. Non-Destructive Testing (NDT): Detects internal defects without damaging the part.

9. Quality Inspection Report: Provides a detailed report documenting all test results.

4. What Are the Tolerances and Precision Levels in CNC Machined Die Casting Molds?

In CNC machined die casting molds, tolerances and precision levels typically range from ±0.005 mm to ±0.1 mm depending on the complexity and material. High-precision molds can achieve tighter tolerances, ensuring a perfect fit for parts, while more standard molds may have slightly larger tolerances. The precision level is influenced by factors like the machine’s capabilities, material, and the design of the mold.

5. How Does CNC Machining Improve Die Casting Mold Lifespan?

CNC machining improves die casting mold lifespan by ensuring precise and consistent mold features, reducing wear and tear. It allows for tighter tolerances, better material finishes, and the ability to optimize cooling channels for efficient heat distribution, all of which minimize the risk of defects and extend the mold’s durability.

6. Can You Provide CNC Machining Services for Prototype and Production Molds?

Yes, at Junying, we offer CNC machining services for both prototype and production molds. Whether you’re in the early stages of product development or need high-volume production molds, we provide precision machining to meet your specifications. Our services include rapid prototyping for quick design iterations, as well as high-quality production molds that ensure durability, performance, and cost-effectiveness. We use advanced CNC technology to deliver tight tolerances and excellent surface finishes for molds used in various industries.