FAQ

Choosing the right CNC router for your needs can have a significant impact on the efficiency and quality of your production. Here are the key factors to consider when choosing a CNC router:

- Material compatibility: Determine the primary materials you will be working with, such as aluminium, wood, plastics or composite panels. Ensure that the CNC router you choose is designed to work effectively with these materials.

- Work area size: Assess the maximum dimensions of the materials you will be working with. Choose a CNC router with a work area that can accommodate your largest projects to ensure versatility and avoid limitations.

- Precision and accuracy: Evaluate the precision requirements of your projects. High-end CNC routers offer superior accuracy, which is critical for intricate designs and tight tolerances.

- Spindle power: Consider spindle power based on material hardness and thickness. Higher power spindles are required to cut tougher materials and achieve faster processing speeds.

- Software compatibility: Make sure the CNC router is compatible with the design software you use. User-friendly and powerful software can greatly improve your productivity and ease of use.

- Budget: Determine your budget, but remember that investing in a high quality CNC router can save you money in the long run by reducing downtime and maintenance requirements.

- Support and training: Look for manufacturers that offer comprehensive support and training. Proper training will ensure that your operators can maximise the machine's potential safely and effectively.

- Warranty and service: Consider the warranty and post-warranty service options available. A reliable warranty and professional service support can provide peace of mind and keep your business running smoothly.

- For personalised advice on selecting the best VOLTER CNC router for your specific needs, please contact our sales team. We're here to help you make an informed decision.

All major work on the manufacturing, assembling, adjustment and testing of machines is carried out at our workshop in the city of Kolin (near Prague). All VOLTER products have CE certificates.

After installation of each VOLTER CNC Router at the customer's workshop, we conduct full safety and operating training, and minimal maintenance of your machine. The main goal of our service department is to ensure the operability of the installed equipment 24/7.

Technical support is provided depending on the each situation. It can be remote support (usually suffice) or a visit from a technician to the customer's workshop. In addition to the service center in the Czech Republic, there are service centers from from our partners in a number of EU countries.

A spindle is an electric motor on the shaft of which a working tool (milling cutter, drill) is mounted. The main characteristics of spindles are power and maximum speed.  Spindles with a maximum speed of 24,000 rpm are most commonly used in CNC machines designed for processing aluminum, plastics, and wood.

Frequency converters are used to control the rotation speed of the spindles, which allows changes to the rotation speed according to the commands received from the machine control unit.

Spindles have mechanical or pneumatic tool clamping. On spindles with mechanical clamping, the cutters are changed manually using a hook and side wrench. Pneumatic spindles allow tool changes using a button located on the spindle or an automatic tool change system. Tools are clamped pneumatically using ISO30 tapers.

The choice of spindle power depends on the materials to be processed, the required capacity and the diameter of the cutters. For milling cutters up to 6 mm in diameter, a spindle power of 4-6 kW is usually sufficient. For milling cutters of 10 mm or more, it is better to choose a spindle with a power of 10 kW or more.

When choosing between stepper drives and servo drives for your CNC router, it's important to understand the differences and benefits of each:

Stepper motors:
- Limited speed and torque: Stepper motors can struggle with high speed and high torque applications, which can limit their effectiveness in demanding machining tasks.
- Resonance issues: Stepper motors can suffer from resonance problems, resulting in vibration and reduced precision.
- Simplicity: Stepper drives are simpler in design and operation, which can result in easier set-up and maintenance.

Servo motors:
- High performance: Servo drives offer superior performance in terms of speed, torque and accuracy, especially for demanding applications.
- Feedback system: Equipped with an encoder, servo drives provide real-time feedback on position and speed, ensuring precise control and rapid correction of any errors.
- Efficiency and Smooth Operation: Servo drives provide smoother motion and higher efficiency, particularly in high speed and high load scenarios.
- Reliability and durability: The advanced design of servo drives minimises heat generation and reduces wear, resulting in greater reliability and longer life.

At VOLTER, we only use servo drives in our CNC routers. This decision reflects our commitment to deliver the highest performance and reliability for your machining needs. Servomotors ensure that our machines operate with exceptional precision, speed and efficiency to meet the rigorous demands of professional applications.

For more information on why we chose servo drives for our CNC routers, please contact our technical team.

The G code is a text file with commands to move to the specified coordinates and other commands, such as to set the tool number or to set the spindle speed. CNC machines use commands to move in a straight line and in an arc.

In modern machines, the operator does not need to know the G code commands because the G code is automatically generated from the original CAD graphic file by programs (such as Vectric, ArtCam, Fusion and others) and transmitted to the machine.

The G-code for machines from different manufacturers can differ, so a postprocessor (a file that generates the G-code) is required for the CAD programs to work correctly. The postprocessor describes the format of the G code that the machine uses.

The IP camera enables you to cut a printed image according to the vector.  To do this, the marks - black circles with a diameter of 6 mm - must be printed together with the image. Most often, 2 to 4 marks placed in the corners of the printed image are sufficient.

A cutting file is loaded into the machine, which contains aiming marks and image contours (vectors). When such a file is run, the machine uses the camera to determine the coordinates of the mark points in the image and recalculates all the coordinates of the image outline, taking into account the location of the material on the machine working area, its rotation angle and geometric distortions created during the printing of the image.