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Metal burr extending beyond the edge of the cut piece, view on the cut face (top) and from the bottom (bottom) A burr is a raised edge or small piece of material that remains attached to a workpiece after a modification process. [1] It is usually an unwanted piece of material and is removed with a deburring tool in a process called deburring.
These are often used in CNC machining centers for removing burrs (the small flakes of metal) after a machining process. To achieve optimal surface speed and cutting conditions, burrs are rapidly rotated at high speeds, often in the range of thousands or tens of thousands of RPM , which is typically the maximum speed supported by a given spindle.
Because the material is so tightly held and controlled in this setup, part flatness remains very true, distortion is nearly eliminated, and edge burr is minimal. Clearances between the die and punch are generally around 1% of the cut material thickness, which typically varies between 0.5–13 mm (0.020–0.512 in). [ 8 ]
Bangladesh Machine Tools Factory Limited (BMTF) is a commercial enterprise run under the management of Bangladesh Army. It has 19 dynamic factories engaged in manufacturing a total of 566 products. It has 19 dynamic factories engaged in manufacturing a total of 566 products.
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The electrochemical grinding process combines traditional electrochemical machining and grinding processes to remove material from a workpiece. A grinding wheel is used as a cutting tool as a cathode and the workpiece is an anode.
Map updating is a regular process and done once every five to seven years. At present the SOB is digitally updating the base map of Bangladesh. The SOB publishes all the maps from its own offset printing press and the products are available in its sales centre at the SOB campus located in the Tejgaon Industrial Area, Dhaka-1208.
Bangladesh Standard Codes for Information Interchange (BDS 1934:2018): To ensure compatibility and consistency in data exchange across various computer systems and applications within the country, there is a need for a national standard for ASCII-based Bengali character and symbol coding. The Bangladesh Computer Council has addressed this need ...