The CNC machines help you to create high-quality goods while minimizing manufacturing time and so working with high economic productivity.
Using such a system, metals, alloys, or other materials are mechanically treated using a cutter, drill, milling tool, saw blade or band saw – in other words, any cutting tool. The material’s internal structure remains unchanged. Only the dimensions and configuration are modified. As a result, the workpiece is tailored to the parameters provided.
When a skilled person uses a machine with manual control to cut workpieces, he picks the appropriate tool, identifies the system’s devices and operating mode, and determines the sequence of operations in the production process. If the conditions change (a different sort of workpiece is being machined, other changes are needed), the specialist corrects them, selects new tools, and creates the appropriate item.
CNC machines*
When a CNC machine is used in the manufacturing process, everything changes
Programming takes a long time since it takes into account the characteristics of the cutting and auxiliary tools, adjustments, technical modes, and adherence to time standards for each operation. When producing holes with later processing, for example, two technological strategies are used:
- Parallel – holes of a diameter are machined with one tool, and then after changing tools, work is repeated.
- Sequential – when the first hole is treated with a set of tools. The same thing happens with the next hole after adjusting the location (an option that is acceptable when very high accuracy is required).
CNC machining options
There are two ways to operate CNC machines:
- In a semi-automatic cycle, the idle run and the duration of the operation are set in order to load the machine.
- In an automatic cycle, the operator is not required to participate in the technological process. As a result, particular emphasis is focused on the durability of all machine components, tools, and accessories, as well as the excellent quality of the workpieces. Then and only then can you talk about trouble-free functioning.
The following parameters must be stabilized for high-quality machining of workpieces on CNC machines:
- the parameters of the workpieces (dimensions, material properties, surface properties);
- the parameters of the tool (properties of the carbide plate and its geometry);
- the machine parameters related to the accuracy, vibration resistance, and rigidity;
- the shavings cleaning processes;
- effective tool adjustment to achieve the desired dimensions;
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The focus of the machining process, which impacts the efficiency of machining, is one of the most essential elements. This means that the processing must be controlled by one or more work steps, the number of which should be kept as low as possible. The most immediate benefit is that lowering the number of movements of technological equipment adds to the fact that it is possible to reduce time spent and hence costs.
The use of turret heads for machine tools with automatic tool change aids in the development of such setting systems, which allow parts to be machined in 1-2 operations. This is true for high-capacity programmable machining centers. The distinction between the employment of systems in mass, series, and individual manufacturing has become increasingly blurred in recent years. This is because new scientific advances in microelectronics have emerged. New, advanced technologies have been created, most notably a system that enables contactless control of workpiece and tool parameters.