Concerned about surprises Tag: Cutting tool Cutting process Tool material Chips Clamping force Previous: Characteristics and application research of hard turning machining Next: Several reasons affecting tool wear
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Cemented carbide, cermet, ceramic, CBN sintered body and diamond sintered body, electrodeposited diamond, high speed steel and alloy steel are the general term for tool materials.
Physical characteristics
Appearance: Depending on the material, gray, black, gold and other odors: odorless hardness, specific gravity:
Carbides, nitrides, carbonitrides, oxides of W, Ti, Al, Si, Ta, B, V, etc. and metal binders added thereto such as Fe, Co, Ni, Cr, Mo
Safety precautions for using carbide cutting tools:
• The ratio of cemented carbide materials is significant. Therefore, when the size and quantity are large, special care is required and should be treated as a heavy object.
·Carbide cutting tools produce high cutting temperatures and dust and mist during grinding. When dust, vapor mist comes into contact with the eyes or skin, and is inhaled by the human body, it will cause harm.
· When grinding or sharpening carbide cutting tools, it is recommended to use partial vacuum cleaners, protective masks, eyes and gloves. If it is dusty on your hands, wash it thoroughly with soap and water.
• Do not eat at work, wash your hands before meals. Use a vacuum cleaner or washing method to remove dust from your clothes. Do not use your hands to take dust.
• Repeated or prolonged exposure to dust can affect the skin, respirator tubes, and heart.
Precautions for the use of carbide cutting tools:
·Carbide cutting tool materials have hard and brittle characteristics, so be sure to use diamond grinding wheel for grinding.
• Carbide cutting tool materials have hard and brittle properties, so they break when subjected to impact or clamping force.
• Cemented carbides have a small coefficient of thermal expansion, so they are used as heat jackets or cold kits. If the temperature is significantly different from the design value (or high or low), cracks may occur.
• When storing carbide cutting tools, be careful to place them in a dry place. Corrosion by cutting fluid or other liquids will reduce the strength of the tool.
• When brazing hardness alloy inserts, if the brazing temperature is too high or too wet, the blades may fall off or crack.
• After the carbide tool is sharpened, it is necessary to carefully check for cracks.
·If the carbide cutting tool is used after machining, check the tool surface for residual cracks, otherwise the tool strength will be affected and the surface crack of the tool will be eliminated by fine grinding if necessary. Tool type Cause of the accident Clear method All cutting tools Since the blade is very sharp, it is possible to touch the hand directly. ※When you take it out of the case or install it on the machine, use protective equipment such as gloves. Improper use of the wrong method or conditions of use can cause the tool to break out and cause a risk of bruising. ※Please use a safety cover to protect your eyes.
※Please use the recommended cutting conditions, and please read the instruction manual and sample materials carefully. Due to the impact load, the tool is excessively worn, causing a sharp increase in the cutting force, causing the tool to break and splash, which is dangerous to the operator. ※Please use a safety cover to protect your eyes.
※Please replace worn tools in time. High temperature chipping and excessive chip discharge can cause injury and burn to the operator. ※Please use protective gloves and other protective equipment. The cutting process produces high temperatures and does not directly touch the finished tool or workpiece to avoid the risk of burns. ※Please use a safety cover to protect your eyes.
※ When removing chips, close the bed and bring gloves with tools such as pliers or clips. Sparks generated during cutting and sharply rubbed tools produce high temperature and high temperature chips, which may cause a fire hazard. Sparks generated during cutting and sharply rubbed tools produce high temperature and high temperature chips, which may cause a fire hazard.
※ Fireproof measures should be taken when using water-insoluble cutting fluid. When rotating at high speed, such as machine tool fixtures, such as poor balance performance, vibration and chattering will occur, causing the tool to break and dangerous situations. ※Please use a safety cover to protect your eyes.
* The machine must be commissioned and confirmed to be free from abnormal sounds such as vibration or chatter. Defects such as burrs are generated on the workpiece, and there is a danger of injury by touching directly with the hand. ※Please do not touch the workpiece with bare hands. Cutting tool
(with indexable insert) If the blade is not clamped to the relevant part, there is a possibility of falling off or flying out during cutting, resulting in an injury accident. The positioning surface of the mounting blade and the fastening parts are not allowed to adhere to the debris. It should be carefully checked and then the blade is considered reliable.
※Please use the special wrench attached to clamp the blade and parts. The special wrench must not be used for other purposes. When using an auxiliary tool such as a universal socket wrench, if the clamping force is too large, the blade may cause micro-cracks and other defects, which may cause accidents. ※It is only allowed to clamp parts such as blades with the special wrench attached. When the tool rotates at a high speed, there is a danger that the blade may fly out due to centrifugal force. ※Please refer to the product manual and sample for use within the recommended range. Various milling cutters and
Other rotary cutters Milling cutters may hurt your hand due to the sharp edge of the blade. ※Please use protective gloves and other protective equipment. The tool is caused by eccentric rotation, imbalance, etc., causing chatter, vibration, etc., and splashing due to broken tools, which may cause injury. ※The rotation speed is selected according to the recommended conditions.
* To prevent eccentric rotation vibration caused by bearing wear, check the accuracy of the rotary part and adjust the balance regularly. drill When the workpiece is rotated through the through hole, the remaining part will often fly at a high speed when drilling through. The flying object is disc-shaped and sharp, which is very dangerous and easily causes an accident. ※Please use a safety cover to protect your eyes and other protective gear, and attach a cover to the clamping part. The extremely small diameter drill has a pointed shape at the top, which is very sharp and can be easily stabbed by hand. The broken bit of the drill bit will be difficult to remove in the workpiece, and it may break off and fly out, which may cause injury accidents. ※Please pay full attention to safety during operation. Please use protective gloves to protect your eyes. Welding tool There is a risk that the blade will fall off and the broken will cause injury. ※Be sure to confirm that it is firmly welded before use.
※Do not use under high temperature conditions. other When used outside of the intended use, it will cause damage to the machine tool or tool, which is very dangerous. ※Please follow the prescribed usage methods. 
Cutting tool material: