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How to maintain deep hole drills

04/23

How to maintain deep hole drills

The emergence of deep hole drills has brought great convenience to our life and work, so how do we maintain them in our daily lives?

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Analysis of Causes of Wear of Broken Carbide Milling Cutter

04/23

Analysis of Causes of Wear of Broken Carbide Milling Cutter

Formed cemented carbide milling cutters are widely used due to their small shape tolerances.

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What are the characteristics of tungsten steel drill bits?

04/23

What are the characteristics of tungsten steel drill bits?

The number, arrangement and welding angle of the tungsten steel drill bit are different, and the shape of the tungsten steel cutting tool is also different.

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What types of end mills are there?

06/25

What types of end mills are there?

There are many types and shapes of end mills. It comes in many types, including flat end milling cutters, ball end milling cutters, flat end milling cutters with chamfers, forming milling cutters, chamfering cutters, T-shaped cutters, toothed cutters, and rough leather cutters. Among them, flat end milling cutters can be used for rough milling. Their main function is to remove a large number of blanks, as well as small horizontal planes or fine milling of contours; And for semi precision milling and precision milling of curved surfaces, there are ball end milling cutters, which can precision milling steep surfaces and small chamfers on straight walls; A flat end milling cutter with chamfers can be used for rough milling to remove a large number of blanks, which can precisely mill small chamfers on fine flat surfaces. It also includes chamfering cutters; There is another name for T-shaped knife, called drum shaped knife or toothed knife; The shape of the forming milling cutter chamfer cutter is the same as the chamfer shape; Chamfer cutters are divided into milling cutters for circular chamfering and oblique chamfering. T-shaped cutters can mill T-shaped grooves, while tooth shaped cutters can mill various tooth shapes. There is also a rough milling cutter specifically designed for aluminum copper alloy cutting, which can perform rapid machining.

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What is the difference between end mills and keyway mills?

06/25

What is the difference between end mills and keyway mills?

1、 Different characteristics 1. End milling cutter: There are cutting cutters on both the cylindrical surface and end face of the end milling cutter, which can be cut simultaneously or separately 2. Keyway milling cutter: It is a type of milling tool with two types of limit error of blade diameter: e8 and d8. Keyway milling cutter has small spiral angle (20 degrees), groove depth, approximate straight line back folding, and is somewhat similar to Fried Dough Twists drill. 2、 Different uses 1. End milling cutter: mainly used for flat milling, groove milling, step surface milling, and profile milling. 2. Keyway milling cutter: mainly used for machining keyways and grooves, keyway milling cutters are very useful for milling keyways. For example, a 6MM end milling cutter is more prone to breakage compared to a keyway milling cutter when milling grooves, while a keyway milling cutter can cut through it in one go. 3、 Different performance 1. End milling cutter: End milling cutter can process flat surfaces. 2. Keyway milling cutter: Keyway milling cutters cannot process flat surfaces, and the cutting amount of keyway milling cutters is larger than that of end mills.

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What are the structural characteristics of end mills?

06/25

What are the structural characteristics of end mills?

End milling cutter is a widely used multi blade tool in CNC machining, which can process flat surfaces, step surfaces, grooves, etc. The milling speed of the end mill is high and there is no clearance, so it is a high-efficiency cutting tool. The geometric structure of a milling cutter is very complex, and the overall structure of an end milling cutter can be divided into three parts: the blade, neck, and shank. The blade is the most important part of the entire cutting tool, and its material, shape, and number of teeth determine its machining performance. The cutting edge on the cylindrical surface of the end mill is the main cutting edge, and the secondary cutting edges are distributed on the end face; The handle is the clamping part of the cutting tool, which is used to connect with the machine tool and transmit torque during milling. Its shape determines the size of the blade diameter; The neck is the part that connects the blade and the handle. The blade is the most complex part of an end mill, therefore, the key to 3D modeling of an end mill is to model the blade. The main structure of the blade is a spiral entity, which can be obtained by scanning and cutting the generated cylinder with the vertical section of the spiral groove as the contour and the combination curve of the spiral line and a tangent line as the path, forming a spiral entity. The shank of end mills is generally divided into two categories: straight shank and tapered shank. The positioning and installation of straight shank end mills are relatively convenient. For small diameter end mills, the straight shank type is widely used.

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Do you know how to use tungsten steel milling cutters correctly

06/25

Do you know how to use tungsten steel milling cutters correctly

When tungsten steel milling cutters are used in the milling process, the workpiece can be fed along or relative to the tool rotation direction, which will affect the starting and finishing characteristics of the cutting. When tungsten steel milling cutters perform forward milling (also known as co milling), the feed direction of the workpiece is the same as the rotation direction of the tungsten steel milling cutter in the cutting area. The chip thickness gradually decreases from the beginning until the end of the cut is zero during peripheral milling; When performing reverse milling (also known as reverse milling), the feed direction of the workpiece is exactly opposite to the rotation direction of the milling cutter in the cutting area. The chip thickness starts at zero and gradually increases with the cutting process. When tungsten steel milling cutter is performing reverse milling, the tungsten steel milling cutter blade starts cutting from the zero chip thickness point, which generates a high cutting force, thereby pushing the tungsten steel milling cutter and the workpiece away from each other. After the tungsten steel milling cutter blade is forcibly pushed into the incision, it usually comes into contact with the machined hardened surface caused by the cutting blade, while generating friction and polishing effects under the action of friction and high temperature. Cutting force also makes it easier to lift the workpiece off the workbench. When tungsten steel milling cutter is in forward milling, the tungsten steel milling cutter blade starts cutting from the thickness of the chip. This can avoid polishing effects by reducing heat and weakening the hardening trend during processing. The application of chip thickness is very advantageous, and the cutting force is easier to push the workpiece into the tungsten steel milling cutter, allowing the tungsten steel milling cutter blade to perform cutting action. When tungsten steel milling cutters are used for milling, broken chips may sometimes bond or weld to the cutting edge, and gather around the beginning of the next cutting edge. When performing reverse milling, broken chips are more likely to be intercepted or wedged between the blade and the workpiece, which can lead to blade fracture. When performing forward milling, the same chips will be split in half, so as not to damage the cutting edge. Regardless of the requirements of the machine tool, fixture, and workpiece, forward milling is the method. Due to the cutting force being able to push the blade forward while keeping the workpiece down, forward milling has certain special requirements for the machining process. This requires the machine tool to handle the feed requirements of the workbench by eliminating backlash. If the tool is pushed into the workpiece, the feed rate will increase irregularly, resulting in excessive chip thickness and causing edge breakage. Reverse milling should be chosen in such applications. In addition, if there is a significant change in machining allowance, it is more advantageous to choose reverse milling at this time. To clamp the workpiece correctly, a suitable fixture is required, and for operations, the correct tool size is also required. However, for vibration trends, the direction of cutting force is more important.

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Tips for using alloy milling cutters

06/25

Tips for using alloy milling cutters

Alloy milling cutter is currently one of the cutting tools in China. While fully utilizing its various advantages and considering its low production cost, the number of users who use it to replace high-speed steel milling cutters has grown rapidly in recent years. Below, I will introduce its information. Alloy milling cutters are commonly used cutting tools for woodworking, and the quality of hard alloy milling cutters is closely related to the quality of processed products. Correct and reasonable selection of carbide milling cutter is of great significance for improving product quality, shortening Makespan and reducing machining cost. Alloy milling cutters have many advantages, but due to the poor toughness of hard alloys compared to high-speed steel, they are prone to edge breakage when the cutting process is not properly selected or the machine tool accuracy is poor. How to fully leverage its strengths and avoid weaknesses? Here is the question of how to use it correctly. The thinner the alloy milling cutter, the more sensitive it is to vibration and tensile stress when used. If there is significant radial or axial runout, it can easily cause damage. Therefore, the milling machine should operate in a state of high precision, good rigidity of the cutter bar, stable transmission, constant feed per tooth, and sufficient cooling.

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