The choice of turning tools, the difference between 45 turning tools, 90 turning tools and 75 turnin

Aluminum alloy is a metal material that is very easy to process, if the batch is not large, there is no need to buy a machine clamping tool (CNC tool), with YT15 or white steel cutter can be processed, if the finish of the aluminum alloy parts is required to be higher, you can consider using diamond turning tools for finishing.

CNC blades are domestic and imported, domestic ** cheap but the quality is not up to par, but with imported should also explain to the dealer what is the material to be processed, it is recommended that the tool holder is made of domestic, the blade is Korean, and the Korean knives are world-famous, including the best knives for life.

As for the pure chrome you said, I haven't touched it specifically, so I don't have a say, but if it's brittle, it should be appropriate to choose YG8.

Titanium alloy is not a difficult material to process, the material is easy to turn smooth, at least the iron filings will not be as sharp as 304, but the tool wear is much faster than the general material, so the selected speed can not be high, but also for sufficient cooling and lubrication, rough turning with YT15 or YW1 can be processed, if the requirements are higher, you can consider using imported blades for finishing.

By the way, if used properly, the cost of purchasing tools seems to be very high, but because the imported blades have good wear resistance, high cutting speed, and convenient replacement of blades, saving time and effort, greatly reducing the labor intensity and technical requirements of workers, and improving production efficiency, the comprehensive cost is reduced.

The friend upstairs said that the white steel knife is basically eliminated, indicating that you do not know enough about metal cutting knowledge, it can be said that the use of the white steel knife is very wide, but it is a matter of use occasions and skills. At present, cars are entering thousands of households, but are bicycles eliminated?

Aluminum alloy uses Korean KORLOY blades, which are cost-effective. Titanium alloy is difficult to machine, remember not to use coated tools (easy to stick to the knife).Use a good carbide blade and try to choose a blade with a sharp edge.

For chrome steel processing, you can use CVD-coated inserts, and if the conditions allow, choose a larger point of the tip angle. The above is purely a personal opinion.

The white steel knife was basically eliminated.

At present, in our factory, alloy knives are used for both steel and Lu parts processing.

Difference between 45° turning tool, 90° turning tool and 75° turning tool:

1. The cutting angle is different.

The cutting angle of the 45° turning tool is 45, the cutting angle of the 90° turning tool is 90, and the cutting angle of the 75° turning tool is 75.

2. The role is different.

45° and 75° turning tools are generally used to machine end faces, and 90° turning tools are generally used to machine external circles.

3. The characteristics are different.

The 45° turning tool has a large blade, and the tool rigidity is better than that of the 90° turning tool, which is suitable for rough machining. The rigidity of the 75° turning tool is between the 45° turning tool and the 90° turning tool.

With the same amount of passes, the 45° finish is higher, the tip has good heat dissipation, the tool life is long, and the residual area on the surface of the workpiece is small. 90° turning tool with high precision.

4. The carrying capacity is different.

The 45° tool carrying capacity is stronger than the 75° tool, and the 75° tool carrying capacity is stronger than the 90° tool.

Turning tool selection requirements:

The outer rough turning tool should be able to adapt to the characteristics of deep cutting and fast feed when rough turning the outer circle, which mainly requires the turning tool to have enough strength and be able to feed the car with more margin at one time. The general principles for choosing a rough turning tool are:

1. In order to enhance the strength of the cutter head, the front angle and back angle should be smaller.

2. In order to increase the strength of the cutting edge, there should be a transition edge.

3. The entering angle should not be too small and there should be a chip breaker on the rake surface.

4. Select ° turning tool according to the strength and accuracy requirements of the turning tool during cutting.

When finishing the outer circle, it is required to achieve the dimensional accuracy of the workpiece and the petite surface roughness. Less metal is cut during fine turning, so the turning tool is required to be sharp, the cutting edge is straight and clean, and the tip of the knife can be sharpened to polish the polishing part. When cutting, the cutting row must be oriented towards the surface of the workpiece to be machined.

Difference between 45° turning tool, 90° turning tool and 75° turning tool:

1. The cutting angle is different.

The cutting angle of the 45° turning tool is 45, the cutting angle of the 90° turning tool is 90, and the cutting angle of the 75° turning tool is 75.

2. The functions are different.

45° and 75° turning tools are generally used for the end face plus Hu nuclear training workers, and 90° turning tools are generally used for outer ring processing.

3. The characteristics are different.

The 45° turning tool has a large insert and a stiffness better than the 90° turning tool, which is suitable for roughing. The stiffness of the 75° turning tool is between the 45° turning tool and the 90° turning tool.

Under the same cutting amount, the higher the degree of finishing at 45°, the cutting edge.

The better the heat dissipation, the longer the tool life and the smaller the residual area on the workpiece surface. 90° turning tool with high precision.

4. The bearing capacity is different.

The load carrying capacity of the 45° turning tool is better than that of the 75° turning tool, and the load carrying capacity of the 75° turning tool is better than that of the 90° turning tool.

1. Three sides. Rake face: The surface through which the chip flows.

Riser face: The surface opposite the cutting surface of the workpiece.

Secondary flank face: The surface opposite the machined surface of the workpiece.

2. Two edges. Main cutting edge: the intersection of rake face and main rake face, which is responsible for the main cutting work.

Auxiliary cutting edge: the intersection of rake face and secondary rake face, which bears a small amount of cutting work and plays a certain role in polishing.

3. Knife tip. Cutting edge: The intersection of the main cutting edge and the secondary cutting edge, usually a small transition arc.

Types of turning tools: 1. Welding turning tools: The turning tools used in the carbon steel tool holder are opened according to the requirements of the geometric angle of the tool, and the cemented carbide blades are welded in the tool groove with welding powder.

2. Machine clamping turning tool: the turning tool used to clamp the blade on the tool holder by the method of mechanical clamping.

3. Indexable turning tools: Machine-clamped turning tools using indexable blades are mostly used for CNC machine tools.

4. Forming turning tool: a special tool for processing the forming surface of the rotary body, and designing its cutting edge according to the contour of the workpiece. It mainly depends on the accuracy of the cutting edge of the tool.

5. Integral turning tool: The steel blank is ground into a cutter, thread cutter, etc.

1. According to the structure, it can be divided into integral turning tools, welding turning tools, machine clamping turning tools, indexable turning tools and forming turning tools. Among them, the application of indexable turning tools is becoming more and more extensive, and the proportion of turning tools is gradually increasing.

2. The so-called welding turning tool of cemented carbide welding turning tool.

3. The machine clamping tool is a turning tool used to clamp the blade on the tool holder by using an ordinary blade and a mechanical clamping method.

According to the tenth article of the "Workpiece Implementation Standard" issued in 2017, such as Zheng Er, the size of the turning tool angle is mainly based on the following two principles

1. The workpiece material is soft, and a larger rake angle can be selected, and the workpiece material is hard, so a smaller turning angle should be selected. When turning plastic materials, a larger turning tool angle can be taken; When turning brittle materials, a small turning angle should be taken.

2. Rough machining, especially when turning castings and forgings with hard skin, in order to ensure that the cutting edge has sufficient strength, a smaller turning angle should be taken; In order to reduce the surface roughness of the workpiece during finishing, a larger turning angle should be taken.

According to Article 12 of the "Workpiece Implementation Standard" issued in 2017, the size of the turning tool angle is mainly based on the following two principles:

1. The workpiece material is soft, and the larger front angle of the Yupeng Li can be selected, and the workpiece material is hard, so a smaller turning angle should be selected. When turning plastic materials, a larger turning tool angle can be taken; When turning brittle materials, a small turning angle should be taken.

2. In order to ensure that the cutting edge has enough strength and deflection, a small turning tool angle should be taken; In order to reduce the surface roughness of the workpiece during finishing, a larger turning angle should be taken.