The life of tool is affected by many factors such as: cutting speed, depth of cut, chip thickness, tool geometry, material or the cutting fluid and rigidity of machine. Physical and chemical properties of work material influence tool life by affecting form stability and rate of wear of tools. The nose radius tends to affect tool life.
1. Cutting speed: Cutting speed has the greatest influence on tool life. As the cutting speed increases the temperature also rises. The heat is more concentrated on the tool than on the work and the hardness of the tool metrix changes so the relative increase in the hardness of the work accelerates the abrasive action. The criterion of the wear is dependent on the cutting speed because the predominant wear may be wear for flank or crater if cutting speed is increased.
2. Feed and depth of cut: The tool life is influenced by the feed rate also. With a fine feed the area of chip passing over the tool face is greater than that of coarse feed for a given volume of swarf removal, but to offset this chip will be greater hence the resultant pressure will nullify the advantage.
3. Tool Geometry: The tool life is also affected by tool geometry. A tool with large rake angle becomes weak as a large rake reduces the tool cross-section and the amount of metal to absorb the heat.
4. Tool material: Physical and chemical properties of work material influence tool life by affecting form stability and rate of wear of tool.
5. Cutting fluid: It reduces the coefficient of friction at the chip tool interface and increases tool life.
what are tool or methods to help make life easier
1.you have to know the workpiece material 2.tool material 3.type of machining process 4.sinle point or multi point tool 5.roughing or finishing cut 6.stresses that applied on the tool 7.dry or wet machining 8.cutting conditions,speed,feed and depth of cut 9.productivity and tool life 10.surface finish required
the types of tool post on lathes can be classified as single screw tool post four bolt tool post open side tool post four way tool post
tool post is used to handle the tool on the lathe machine
what is a reseating tool
Machinability refers to the ease of which a material may be milled, drilled, turned, etc. These are all machining operations. Materials with a lower machinability cause less tool wear, require less cutting force and power, provide a better surface finish, and provide better chip disposal.
Machinability refers to the ease of which a material may be milled, drilled, turned, etc. These are all machining operations. Materials with a lower machinability cause less tool wear, require less cutting force and power, provide a better surface finish, and provide better chip disposal.
Tool life is greatly shortened when used for both roughing and finishing thus affecting dimensional accuracy and surface finish badly as tool begin to wear off or get chipped, whereas, tool life gets longer when different tools are being used for roughing and finishing again dimensional accuracy and surface finish is affected but this time by achieving good results.
n is found by using experimental data. The whole point of Taylor's tool life equation is to predict the tool life for different spindle speeds.
The "life hammer", like the "jaws of life," is a tool that is used in cases of life threatening emergencies. When necessary, the tool is capable of freeing an individual from beneath a trapped vehicle.
yes
Carbide, ceramic or diamond cutting tools will give longer life.
Land tool
Cultivating Life - 2006 Tool 4-18 was released on: USA: 15 August 2009
reading is the basic tool in life because it help us to communicate other nations to introduce our products in philippines
about 5 yrs for an abused power tool but about 15yrs for a well looked after one
From the first stone tool it MADE your daily life.