Basic knowledge of installers, welcome to continue to make learning easier: < /i >
1. Tap function - internal threading
2. Matrix function - handle external streams
3. Reamer function: make the wall of the inner hole smoother (refers to finishing)
4. Twist drill function - round holes
5. The function of the drill chuck is to clamp the drill
The role of key 6 of the drill chuck is to loosen or clamp the drill in the drill chuck
7. Plier function: workpiece clamp
8. Bench vice function: workpiece clamp
9. Height ruler function: draw line in height direction
10. Square Rectangle: An Auxiliary Drawing Tool
11. Marking tablet: an auxiliary marking tool
12. Planning function: drawing arcs or circles
13. Accuracy of conventional calipers: 0.02mm
14. Micrometer accuracy: 0.01mm
15. How many millimeters in an inch? 1 inch = 25.4 millimeters
16. (Imm= 100 wires, 1 mm 2 1000 microns 1 wire 2 10 microns
17. Plier key function: tighten or loosen the workpiece on the pliers
18. Screw role: pressure tap or reamer
19. The role of sample punching: hole punching
20. A hand saw consists of a saw blade and a saw blade
21. A hand saw is a manual sawing tool
22. File is a manual feed tool
23. Sweeping effect: cleaning chips.
24. File and brush function: remove chipped files
25. Conventional twist drills, taps and reamers are made from high speed steel
26. Conventional hacksaw blades are typically cold rolled mild steel. 27. Common material for regular files - T12A
28. Typically, the drilling speed of a drill with a diameter of less than 3 mm is 1800 rpm. The drilling speed with a drill with a diameter of 4–10 mm is 700 rpm. The reaming speed is usually half the normal drilling speed. /p>
29. General Threading Steps: Drilling Small Holes ~ Reaming Bottom Hole Threads ~ Chamfering ~ Chip Cleaning ~ Adding Lube Oil ~ Threading (1st and 2nd) ~ Chip Cleaning
30. Reaming steps: drilling small holes ~ reaming ~ chamfering ~ cleaning and cutting ~ adding lubricating oil ~ reaming (the reamer can only rotate clockwise)