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The classification of nc tool
Engraving Tools-Guangzhou Jeefoo Cnc Tools / 2012-07-31

Cutting tools is a lot of, but how can classification?

According to the workpiece surface processing the first forms can be divided into five categories. Including turning, planer knives, mills, outside surface broach and file, etc.; Hole machining tool, including drilling, and enlarge hole drilling, boring, reamer and surface of the knife knife, etc; Screw machining tools, including taps, round BanYa, automatic switching thread cutting head, thread tool and threaded milling cutters, etc.; The gear processing cutting tool, including pinion gear hob, knife, gear shaver, bevel gear processing cutting tool, etc.; Cut tool, including set tooth circular saw blades, the bandsaw, bow saw, and saw blades milling cutters cut off lathe tools, etc. In addition, there is a combination cutting tools.

Secondly according to cutting movement way and the corresponding blade shape, and can be divided into three groups. General tools, such as turning, planer knives, mills (not including the shape of turning, planer knives for machining and forming forming cutter), boring, reaming, bit sword drill, reamer and saw and so on; Forming cutting tools, this kind of cutting tools of blade has and be machining or close to the same section of the same shape, such as forming turning, forming, the forming cutter, planer knives for machining broach, tapered reamer and of thread cutting tools, etc.; Generative tool is the diagnosis of gears with exhibition tooth face or similar workpiece, such as pinion gear hob, knife, gear shaver, bevel gears and bevel gear plate and planer knives for machining milling cutter.

The structure of cutting tools by the clamping part and working parts. The overall structure of the cutting tool clamping part and the part of the work done in the blade; Tooth structure with tool part of the job (cutter tooth or blade) is set into blade.

The cutting tool clamping part with a hole and handle with a two kinds. With a hole cutter rely on inner hole in the machine suit spindle or heart axis, with the aid of the axial key or end key transfer torsional moment, such as cylindrical milling cutter, set of type surface milling cutters, etc.

Take the handle tools usually have rectangular handle, cylindrical handle and cone handle three. Turning, planer knives for rectangular commonly the handle; Cone handle by taper bear axial thrust, and with the transfer torque friction; Cylindrical handle generally applied in smaller manual twist drill, such as vertical milling tool, cutting the aid of when clamping generated when the friction torque transfer reverse. Many take the handle of the handle of the cutting tools with low alloy steel, and work with the part since the two parts welded and into.

Cutting tools is part of the job and dealing with the parts produced scraps, including the blade, and broken broken or roll on scraps of structure, scraps discharge or let store the space of the chip, cutting fluids such as the channel structure elements. Some part of the job is cutting tool parts, such as turning, planer knives, boring and milling cutter knife; Some tools work part includes cutting part and calibration parts, such as drills, enlarge hole drilling, reamer, inside surface broach and taps, etc. The function of the part is cutting edge with resection of scraps, the calibration of the role of the light of cutting processing surface and has led the cutting tools.

The structure of the working parts of cutting tools have integral, welding type and mechanical clip solid type 3 kinds. The overall structure is made in blade cutting edge; Welding structure is the blade to the sword of the steel brazing body; Solid structure and mechanical clip two kinds, one kind is the blade clip in blade on solid, another kind is the brazing good cutter clip in blade on solid. Cemented carbide cutting tools general welding structure or mechanical clip made solid structure; Porcelain knives have the mechanical clip solid structure.

In choosing the point of view of the cutting tool, you need to consider the influence of many factors, such as the materials, cutting tool materials, processing properties (thick, finishing) etc, must according to the specific circumstances reasonable choice. Usually speak tool Angle, it is to point to manufacture and used for measuring Angle in the practical work mark, because the installation position of cutting tool for cutting and different direction of motion change, actual Angle and the point of view of the mark is different, but are usually very school manufacturing tool materials must have very high hardness and high temperature resistance, the necessary flexural strength, impact toughness and chemical inert, good technology (cutting, forging and heat treatment, etc.), and is out of shape not easily.

Usually when materials high hardness, wear resistance and high; High bending strength, impact toughness is high. But the higher hardness materials, and the bending strength and impact toughness is low. Because of the high speed steel paper has high bending strength and impact toughness, and good processability, modern is still the most widely used tool materials, followed by hard alloy. Polycrystalline cubic boron nitride is applicable to cutting high hardness hardened steel and cast iron, and other hard; Polycrystalline diamond is applicable to cutting do not contain iron metal and alloy, plastic and glass reinforced plastics; Carbon steel and alloy steel now only be used for the file, round BanYa and tools such as taps.

The type of milling tools and function

This paper will introduce some effective use of different shape tool skills. Here talking about the four basic tool widely used in 3 d milling and nc-copy milling.

 

Crew cut milling cutters

 

For use in the understanding of the crew cut end mill is very important is when the heat generated by the cutting to the accumulation in the party in the tip. In high speed milling, in order to slow down the cutting generate heat and lead to sword Angle wear too fast phenomenon, cutting speed may have to reduce. In milling hardened metal, only when the tip is not suitable for use in only when the cutting tool. For example fine milling a vertical wall surface parts. And in milling metal without heat treatment, the typical applications include vertical wall of rough milling and fine milling.

 

With the tip of the fillet crew cut end mill

 

Add the tip of the fillet party shoulder end mill allow higher cutting speed, this is because cutting heat generation can spread to more large area on the tools. And round the crew cut vertical milling point, these tools include the typical application of heat treatment of metal without the vertical wall thick milling and fine milling. In addition, the cutting tools can also be used to fine by heat treatment of vertical milling metal surface, whether a are available. If need to processed into the small arc, also can use this type of cutting tool clear root.

 

Round the point of the milling cutter crew cut another application is cycloid processing. This is a kind of tool path to fixed arc radius for continuous cycloid feed. The crew cut pointed at the bottom of the milling cutter can only be used for no cycloid processing, and round the point can be of milling cutter crew cut cut deep cycloid processing.

 

Round nose milling cutters

 

The appearance of the milling cutter round nose is different. Don't will round nose milling cutters and a round of the blade with multiple nc-copy confused milling cutter. Round blade nc-copy milling cutters do have important USES, but with more the blade, and the cutting tool does not have a round nose has the processing precision milling cutter. Ox nose blade for medium range of cutting speed and high cutting load thick milling cavity and cores. And round nose milling cutters better a purpose is fine milling plane, including the parting surface.

 

Ball milling cutter head

 

In my opinion, the ball milling cutter head is the most common of the high-speed machining tool. The ball milling cutter head can be used to rough machining any cavity, cores and 3 d shape. They can also be used to all the hardness of any material within the scope of precision. Because of the spherical can make cutting heat generation of large area to absorb the cutting tool, cutting tool and other than this tool allows higher cutting speed. It also allowed more cutting depth, because in the rigid high ball cutting tools can make more cutting force towards the spindle component, and when the rigid when poor toward flank. For the same reason, reduce vibration cutting tools, further help control heat. If the tools in cutting speed and cutting depth advantages combined consideration, ball head than the paper cutter of other milling cutter has higher metal cutting rate on the heat treatment of material crude milling, ball milling cutter head is often the preferred tool. If need to small fillet radius, can then choose other types of tools to anat clear root.

 

In milling flutes, milling cavity and milling reinforcement, often will use cylindrical vertical milling, because this kind of tool and the characteristics of the shape seems to each kind of shape match. But in fact, the ball milling cutter head also qualified for more tasks. For example, if choose ball head to milling processing a ShenCao (whether the slot or closed slots), can use shallow slope milling and contours of the high-speed machining technology typical milling. Through this method processing groove end mills than using cylindrical milling much faster. Also, other parts of the part of the lateral wall may have better straightness and vertical degree, not like use longer cylindrical vertical milling bending usually leads to the taper. To strengthen can use similar methods for machining.

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