CP5070-2022-2B01-Liew-Qian-Yu

 Gears Documentation Blog Entry 1.These are the definition of gear module , pitch circular diamater and the relationship between gear module , pitch circular diameter and number of teeth: Module is the ratio of reference diameter of gear divided by teeth m=PCD/z m: Module PCD: Pitch circular diameter z: No of teeth 2.Below is the relationship between gear ratio(speed ratio) and output speed for a pair of gears. Gear ratio= driven/driver Speed ratio= Output speed/Input speed Lower gear ratio, Higher speed ratio Below is the relationship between gear ratio and torque for a pair of gears  Lower gear ratio, Lower torque 3. Below is the proposed design to make the hand-squeezed  fan better: 4. Below are the description on how my practical team arranged the gears provided in the practical to raise the water bottle. a)Calculation of the gear ratio(speed ratio) 30/30=1 30/30=1 30/20=1.5 40/30=1.33 40/20=2 20/40=0.5 40/40=1 Gear ratio= 1.5x 1.33x 2x 0.5 =1.995 b)The photo of the actual gear lay

  Laser cutting documentation blog entry   In this page, i will describe: 1. The 4 important hazards associated to the operation of laser cutting machine and their respective safety control measures (administrative/engineering control). 2. The materials that can be cut and can’t be cut using laser cutting machine. 3. The steps including pictures on the operation of universal laser cutter, that consist of: a. Starting the compressor, turning on the laser cutter machine and fume extractor. b. Importing a .dxf file to coreldraw and modify the lines/fill for cutting and engraving. c. Sending the coreldraw drawing to laser cutter software and setting the laser cutter power, speed, ppi in the software. d. Starting the job on the laser cutter machine. e. Dos and donts when there’s flame/fire on the material being cut. 4. My learning reflection on the laser cutter activities.     1.   These are the 4 important hazards and the respective safety control measures on the operat