Types Of Commonly Used Tool Of The CNC Milling and Tool Type Selection
Precision CNC machining parts NC milling tool types, in order to adapt to high-speed, high efficiency and high degree of automation features of CNC machine tools, the tool is moving in the direction of standardization, universal and modular development, including the milling cutter and hole machining tool. meet the requirements of efficient and specific milling, developed for a variety of special purpose tool. There are many ways to the classification of the CNC milling tool tool structure can be divided into: (1) the overall style, ② mosaic, welding or machine clip connection, the clamp can be divided into translocation and indexable two ③ special type, such as composite tool, damping tool manufacturing tool materials can be divided into: (1) high-speed steel cutting tools, ② carbide cutting tools, (3) diamond tool, ④ other materials, cutting tools, such as cubic boron nitride cutting tools, ceramic cutting tools. from the cutting process can be divided into: flat end milling cutter, rounded end mills, ball end cutter and taper milling knives.
Machining Centers, Tool Type Selection
Precision CNC machining partsTool selection in CNC programming state of human-computer interaction should be based on the processing capacity of the machine tool, workpiece material properties, processing procedures, cutting parameters and other relevant factors, the correct selection of the tool and tool holder, tool selection The general principle is : easy to install, good rigidity, durability and high precision to meet the processing requirements under the premise, as we choose a shorter shank in order to improve the rigidity of tooling production, processing parts of the geometry is to select the tool type the main basis.
Precision CNC machining parts A milling cutter selection of machining curved parts, in order to ensure that cutting edge and contour is tangent to the cutting point, to avoid the blade and the workpiece contour interference, generally use the ball head knife, rough two-edged cutter, semi- finishing and finishing with four-blade cutter, milling the larger plane, generally use the blade inlaid disc cutter, milling flat or stepped surface in order to increase productivity and improve the surface roughness, generally universal cutter milling keyway, in order to ensure the dimensional accuracy of the slot, usually two-edged keyway cutter, posted on Free paper Download Center http://eng.hi138.com
2. hole machining tool selection. hole machining of CNC machine tools in general no drill mode, due to poor rigidity of the drill and cutting conditions, the selection of the drill diameter D should satisfy L / D ≤ 5 (L conditions for the drilling depth, the drill center drill before positioning to ensure the accuracy of the positioning of the hole processing, fine twist the choice of floating reamer reaming orifice want to chamfer, boring should try to use a symmetrical edge boring head, cutting, cut vibration to balance the boring; try to choose a thicker and shorter shank in order to reduce cutting vibration. economic type CNC machining, tool sharpening, measurement and replacement of more than manually, taking up the auxiliary long time, therefore, must be reasonable to arrange the order of the tool in general should follow the following principles: (1) to minimize tool quantity, ② a tool clamping to complete all processing site ③ rough finishing tool should be used separately, even if it is the same dimensions of the tool, ④ The first milling drill, ⑤ the first surface finished, two-dimensional contour finishing, (6) possible, as far as possible use of CNC machine tools, automatic tool changer, in order to improve production efficiency In addition, the durability and accuracy of the tool and the tool price relationships requires attention, in most cases, choose a good tool, although the increase in the cost of the tool, processing quality and the resulting efficiency can greatly reduce the overall processing costs. In short, according to heat treatment condition of the workpiece material, cutting performance, and allowance to choose good rigidity, high durability cutter is to give full play to the CNC milling machine production efficiency and access to the premise of a satisfactory quality of processing.