What is CNC Turning Machine?
Knowledge

What is CNC Turning Machine?

CNC turning centers and lathe machinery look are the same, but they usually refer to slightly different machine tools. Lathes can usually only turn, while turning centers can be more advanced. These machines can perform end face, thread, knurling, drilling, boring, reaming, and taper turning. Horizontal CNC lathes are more common, while vertical machine tools use gravity. CNC turning centers can benefit from predictive maintenance.
Published: May 08, 2020
What is CNC Turning Machine?

What is CNC Turning Machine?

In CNC turning, bars of material are held in a chuck and rotated (spun) while various tools are “pressed” to the bar stock to remove material and create the desired shape and features. When the component requires both turning and milling features (pictured above), the bar rotation can be stopped to allow for milling (usually flat area). This technique allows for a wide range of shapes, sizes, features, and even material types.

CNC turning centers have tooling mounted on a turret for correct placement against the bar stock. We use CNC turning centers with “live” tooling, which allows us to program an extensive range of features on an individual component such as drilled holes, slots, and milled surfaces. CNC turning centers without live tooling would be limited to the number and types of features that can be produced on a component.

  • The starting material, though usual round, can be other shapes such as hexagons. Each bar shape and size may require a specific “collet” (a subtype of chuck—that forms a collar around the object) to correctly position the bar for machining.
  • Depending on the bar feeder, the bar length can vary.
  • CNC turning centers have tooling mounted on a turret which is computer-controlled.
  • CNC’s with “live” tooling, such as those at Pioneer Service, can also stop the rotation and add additional features such as drilled holes, slots, and milled surfaces.
  • Some CNC turning centers have one spindle, allowing work to be done all from one side, while other turning centers, such as the one shown above, have two spindles, a main and sub-spindle. A part can be partially machined on the main spindle, moved to the sub-spindle, and have additional work done to the other side of this configuration.
  • There are many different kinds of CNC turning centers with various types of tooling options, spindle options, and outer diameter limitations.

Which parts are suitable for CNC turning?

While a lot of factors go into determining if a part can be made most cost-effectively on a specific CNC turning center, some things we look at are:

  • How many parts are needed short-term and long-term? CNC turning centers are generally good for prototypes to short-run volumes.
  • What is the largest OD on the part? For the CNC turning centers at Pioneer Service, the maximum OD for collated (bar feed-capable) parts is 2.5.”
  • Parts over 2.5″ OD are chucked individually, which depending on volume, can contribute to the price.
  • Parts under 1.25″ OD and medium to high volume may be a better fit for the Swiss screw machines.
  • If a part can be made both on the CNC turning center and on a 32 mm Swiss Screw Machine factors such as projected volume and lead-time are critical for making the best call on which to use.

The main difference between CNC and traditional lathes

The traditional lathes are usually limited to two axes for machining, while the CNC lathes can have up to six machining axes and even milling tools.
  • Horizontal CNC lathe is one of the most commonly used machine tools, with all the functions of a conventional lathe, but they are controlled by a computer and are mainly used for turning and boring.
  • The vertical CNC lathe fixes the work piece from the bottom (instead of holding the side fixture horizontally), and then rotates the work piece like the top. This is very useful for workshops with limited space and when dealing with particularly sturdy and heavy work pieces.
  • The horizontal turning center is a closed CNC lathe with integrated milling and drilling functions. The turning center can also include a travel tool holder, more tooling shafts, coolant overflow, a tail stock separate from the carriage, and sometimes a conveyor belt.
  • Vertical turning center is a combination of horizontal turning center and CNC milling machine.
Published by May 08, 2020 Source :pioneerserviceinc, Source :pioneerserviceinc

Further reading

You might also be interested in ...

Headline
Knowledge
How Does the Electroplating Process Work for ABS Plastic?
Over the past few years, plastic electroplating has gained widespread popularity, particularly in the decorative electroplating of plastic components. Among the various types of plastic utilized in electroplating, ABS plastic stands out as the most extensively employed.
Headline
Knowledge
What Are the Fundamentals and Benefits of Choosing between Liquid and Powder Coating?
Metal fabricators aiming to venture into finishing processes should familiarize themselves with two prevalent options—liquid and powder coating—along with the prerequisites necessary for a company seeking to employ either or both.
Headline
Knowledge
Anticipating the Emerging Trends in the Global Laser Industry
In light of the evolving global industry demands, the laser industry and technology are shifting their focus towards meeting the requirements of 5G semiconductors and smart vehicle processes. While Taiwan's laser industry has a well-established foundation built over the years, sustaining international competitiveness necessitates a proactive advancement in independent laser technology.
Headline
Knowledge
What is the Purpose of Surface Treatment for Metals?
Defects are bound to arise during the reprocessing of mechanical equipment or parts related to metal. As a result, the final item's surface treatment process plays a crucial role, serving the dual purpose of enhancing aesthetics and providing protection. This process not only improves the performance of metal parts but also helps prevent rust.
Headline
Knowledge
Selecting a Hydraulic Press and Understanding its Manufacturing Procedure
Hydraulic presses find applications in compaction, assembly, pressing, forming, embossing, and stretching. They play a crucial role in compaction within the cosmetics sector, assembly in the automotive industry, molding of electronic products, and stamping in the home appliance industry.
Headline
Knowledge
Introduction to RFID Tags: The Significance of RFID in Modern Retail Supply Chains
There are two types of RFID systems: passive and active. For those unfamiliar with RFID, you may be curious about the distinctions between these types and which one suits your application best. In the following, we offer a brief explanation.
Headline
Knowledge
Anticipating the Emerging Trends in the Global Laser Industry
In light of the evolving global industrial demands, the laser industry and technology are shifting towards meeting the requirements of 5G semiconductors and advanced processes for smart vehicles. While Taiwan's laser industry has made substantial progress over the years, maintaining alignment with international advancements necessitates a proactive push in independent laser technology.
Headline
Knowledge
Exploring Sheet Metal: Defining Sheet Metal and its Various Applications, with a Focus on Laser Applications
The term originates from English, known as plate metal. Typically, certain metal sheets undergo plastic deformation either manually or through die-stamping to attain the desired shape and size. These sheets can then undergo additional shaping through welding or a limited amount of mechanical processing to create more intricate components.
Headline
Knowledge
Comprehending CNC Motion Control and Three Common Types
The primary advantage provided by various types of CNC machine tools is enhanced automation, as it allows for the reduction or elimination of operator intervention in the production of workpieces.
Headline
Knowledge
How is Automatic Optical Inspection (AOI) Technology involved?
What is AOI? AOI stands for automatic optical inspection technology, known for its non-contact nature, rapid speed, high precision, and stability. This technology effectively addresses the limitations of manual visual inspection in quality management.
Headline
Knowledge
What Constitutes a Planing Machine?
A shaper is a machine tool that employs the relative linear motion between a workpiece and a single-point cutting tool to shape a linear toolpath. Its cutting process is similar to that of a lathe, but it typically follows a linear, as opposed to a helical, trajectory.
Headline
Knowledge
What Constitutes the Principal Components of a Shaper Machine?
Shaper machines are intricate pieces of equipment designed for precision machining. They comprise several essential components, each contributing to the machine's overall functionality and effectiveness. To gain a comprehensive understanding of how a shaper machine operates, it's crucial to examine the role and interplay of these individual parts within the complete system.
Agree