Technological equipment of the most popular CNC la

2022-08-04
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Process equipment of CNC lathe

1 CNC lathe tools

(1) requirements for tools

CNC lathes can be used for both rough and finish machining. In order to make the rough machining process with large cutting depth and large feed speed, the rough turning tool is required to have high strength and good durability. The first step of finish turning is to ensure the machining accuracy, so it requires high precision and good durability of the tool. In order to reduce the time of tool change and facilitate tool setting, machine tool clamping should be used as much as possible

CNC lathes also require good consistency of blade durability to facilitate the use of the tool life management function. In the service life management of cutting tools, the setting principle of blade durability is that Huaibei City makes efforts to promote the development of ceramic aluminum new material industry at multiple points, based on the blade with the lowest durability in this batch of blades. In this case, the consistency of blade durability is even more important than its average life

(2) tools for NC lathe

turning tools for NC turning are generally divided into three categories, namely, pointed turning tools, arc turning tools and forming turning tools. Turning tools characterized by linear cutting edges are generally called pointed turning tools. The tip of this kind of turning tool (also the tool location) is composed of linear main and auxiliary cutting edges, such as 90 inner and outer circle turning tools, left and right "C60" materials: Mom doesn't have to worry about me anymore! End turning tools, grooving (breaking) turning tools and various external and internal hole turning tools with small chamfer on the tool tip. When machining parts with this kind of turning tool, the contour shape of the parts is mainly obtained by the displacement of an independent tool tip or a linear main cutting edge, which is quite different from the principle of the contour shape of the parts obtained with the other two kinds of turning tools

arc turning tool is a special turning tool for NC machining. The utility model is characterized in that the shape of the cutting edge constituting the main cutting edge is an arc with small roundness error or line profile error; Each point of the arc edge is the tip of the arc turning tool, so the tool point is not on the arc, but on the center of the arc; In theory, the turning tool arc radius has nothing to do with the shape of the machined parts, and can be flexibly determined or confirmed after measurement as required. When the tip of some pointed turning tools or forming turning tools (such as thread turning tools) has a certain arc shape, it can also be used as such turning tools. At present, the intelligent tensile test locomotive cutter is widely used in arc shape. It can be used to turn the inner and outer surfaces, especially suitable for turning various smooth connection (concave) forming surfaces

the formed turning tool is commonly known as the template turning tool, and the contour shape of its machined parts is completely determined by the shape and size of the turning tool blade. In NC turning, the common forming turning tools include small radius arc turning tools, non rectangular slotting tools and thread turning tools. In NC machining, the forming turning tool shall be used as little as possible or not used. When it is necessary to select it, it shall be described in detail in the process preparation document or the processing program sheet

in order to meet the needs of automatic machining of CNC machine tools (such as tool setting or presetting, automatic tool change or rotation, automatic detection and management), continuously improve the processing quality and production efficiency of products, and save tool costs, more modular and standardized tools should be used

2. Chuck

hydraulic chuck of NC lathe is an important accessory for clamping workpiece during NC turning. Ordinary hydraulic chuck can be used for general rotating parts; For parts whose clamped part is not cylindrical, a special chuck is required; Spring chucks are required when directly machining parts with bar stock

3. For parts with large ratio of axial dimension to radial dimension of tailstock of CNC lathe, the movable center installed on the hydraulic tailstock shall be used to support the tail end of the parts, so as to ensure the correct processing of the parts. The tailstock has common hydraulic tailstock and programmable hydraulic tailstock

4. The tool rest of CNC lathe is a very important part of CNC lathe. According to the function of the NC lathe, the number of tools that can be installed on the tool holder sample forming frame: 5 pieces of metal plates with 70x70mm inner hole and 40x40mm thickness - generally 8, 10, 12 or 16. Some NC lathes can be installed with more tools

the structural form of the tool rest is generally rotary. The tool is installed on the tool rest along the circumferential direction. Radial turning tool, axial turning tool, drill bit and boring tool can be installed. The turning center can also be equipped with axial milling cutter and radial milling cutter. The tool rest of a few CNC lathes is in-line, and the tool is installed along a straight line

CNC lathes can be equipped with two types of tool holders:

(1) the special tool holder is developed by the lathe manufacturer, and the tool handle used is also special. The advantage of the tool holder is that the manufacturing cost is low, but it lacks universality

(2) general tool rest is a tool rest produced according to certain general standards. The NC lathe manufacturer can select and configure it according to the functional requirements of the NC lathe

5. Milling power head of CNC lathe

installing milling power head on the tool holder of CNC lathe can greatly expand the processing capacity of CNC lathe. (end)

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