Who can tell me the correct answers to the blacksmith exam questions! ?
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1 The thin plates we are referring to generally mean steel plates with a thickness of ------- MM or less. 2 Commonly used lubricating materials include -----, -----, -----. 3 The types of mechanical transmission are——-, ———-, ———-, ———-, ———-. 4 A rolling bearing generally consists of –――-, –――-, rolling elements, and a cage. The shapes of the rolling elements include – short cylindrical rollers, – and spherical rollers. 5 The pins used for connection come in two types: -----, -----. 6 In carbon steel, a carbon content of less than 0.25% is classified as –, a carbon content of 0.25%–0.6% is classified as –, and a carbon content greater than 0.6% is classified as –. In the thread specification M20*2－－7g6g－30, the 7g6g denotes -----. I’ve been in this field for only a short time, and I’m not fully understanding some of the concepts mentioned in books. I hope everyone here can offer me some guidance!
1.6 2. Lubricating oils, lubricants, lubricating pastes 3. Screw drives, belt drives, chain drives, gear drives 4. Inner rings, outer rings; roller bearings, tapered roller bearings 5. Cylindrical pins, tapered pins 6. 0.25% low-carbon steel; 0.25–0.06% medium-carbon steel; 0.6% high-carbon steel 7. Tolerance zones for the pitch diameter of external threads, tolerance zones for the outer diameter of external threads
1.6 2. Lubricating oils, lubricants, lubricating greases 3. Screw drives, belt drives, chain drives, gear drives 4. Inner rings, outer rings; needle rollers, tapered roller bearings 5. Cylinder pins, tapered pins 6. Low-carbon steel, medium-carbon steel, high-carbon steel 7. Tolerance zones for the pitch diameter of external threads, tolerance zones for the outer diameter of external threads
1. 4MM 2. Lubricants, greases, and solid lubricants 3. Screw drives, belt drives, chain drives, gear drives, and worm drives 4. Inner rings, outer rings; spherical, conical 5. Cylinder pins, tapered pins 6. 0.25% low-carbon steel, 0.25–0.6% medium-carbon steel, 0.6% high-carbon steel 7. Tolerance zones for the pitch diameter of external threads, tolerance zones for the outer diameter of external threads
Thank you, big bro! ^_^ Please feel free to ask for help in the future.
Support for the fourth floor; you’re much more talented than I am.