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The projection pattern for the primary maintenance test series i, the filling of question 1 and the three views are: (long pairs of positives), (high flats), (wide equals). 2. The outside threads are drawn using (bold) lines. The snail length (0. 5) of the spiral portion of 3 and 1,000-minute feet. A scale of 0 and 02 with precision, when the zero line is aligned, the grid (50) is aligned to the main ruler (49). 5. The outer circle of the bearings and the bearings are coordinated with the inner hole and the axis. During assembly, preference is given to co-operation (basic holes). 7. Inert wheels in gear transfer, do not change (motion ratio), change only (drive direction), use characteristics (structure) are simple and apply to two axes (distance). 9. Spirals can easily transform the (turn) motion of the active into a (line) movement of the motion from the motion. 10. High-speed steel is (alloy) steel. 11, cast
The carbon content of iron is (high)12, the post-lined mass differential requirement is (0. 4)13, and there are many types of equipment, depending on their use and characteristics, can be divided into (tens of thousands of energy), (specialized quantity) and (standard mass). 14. The size of the card scale is 1 and the size of the card scale is 50, and the accuracy of the reading of the card ruler is 0. 02 when the two-size claws are aligned to the 49 of the ruler. 15, gyrodynamics may be divided into structural characteristics (parallel axle) and (symmetric axle) (symmetric axle). 16. With the (v belt) and (tangular bands) commonly used in conveyance. 17. Write the following codes for steel: carbon 8 is (t8); and manganese is (65m). 18 the length of saws commonly used for clamps is 300. Precision can be achieved (0. 1). 20. Basic methods of extraction are available
Three, three, one, two, one, one, one, two, one, two, three, three, three, three, three, three, three, three, three, three, three, three, one, one, one, two, one, two, one, one, one, two, one, one, two, one, one, two, one, one, two, one, one, two, one, two, one, one, one, two, one, one, two, one, one, two, one, one, two, three, one, one, two, one, one, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, three, 21. The junction card scale consists of the inside, external (quantitative claw) and depth of the mouth of the knife. 22 the readable values for the scale card can be 0. 1 mm, 0. 02 mm and 0. 05 mm. The fixed cylinders of 23, 000 feet have a graft at a distance of 0. 5 mm, and the microcentre circle has 50 grids evenly. Thus, the microscaling rod moves (0. 01) mm at each turn. 24, the difference in shape is divided into (shape) and location. 25 the synonym code is h for molecules and h for qualifiers. 26 the basic dimensions in the mechanical drawing samples are 300. 015 and 30h7. The maximum size is the two limit values for permissible size changes, and the maximum limit size is 300. 015.
4, 015), with a minimum limit size (29. 985). Algebra differences resulting from the reduction of the maximum limit size by the base size are known as (upside deviations). 28 the main tools for wiring are: steel, straight feet, needles and wiring discs, (specify) flashes and hammers, all-power angles. 29. The first step in stereotyping is to (select the underlined benchmarks). 30. In the case of parts such as hard materials, pipes or sheeting, the choice shall be made for saws. 31. When the percentage scale is measured, the impact of the measuring pole shall be twice as long (1. 251. 5) as the condensation length of the measuring pole on the plane (vertical). 33. The length of the material remains the same after the deformation of the material (neutral layer). 34. A cross-section is a cylindrical compressed spring, which compresses 2 mm with a strength of 4n and is applied with the force of 8n when compressing 4mm. It is generally desirable that the rear angle be (58) at the time of extraction. Regular
5 the conical angle drill is (). The calibration portion of the hand knife is (a small cone of the older and older). . Precise holes (which have already been coarsed) should be left (...) processing residuals. 39. The bottom diameter in front of the pre-scaling thread shall correspond to the threaded diameter. 40 in general, each set is (slightly greater). 41 sword grinding equipment on sand turbines should be operated (on both sides). 42 the close ring shall be installed (side) at the assembly bearing. When the snail case is assembled, the accuracy of the contact spot is adjusted by moving (turning the cylindrical surface of the parts). 44 when the thin wall tiles and the bearings are fitted together, they have a suitable excess, and their axle section is more (higher) than the axle bearings (snail axle)45. 46. When deep-knot bearings are installed, when the inner circle and the outer-hull hole are tighter and looser, they shall normally be (first axle and bearing). 47, when the hexagonal bolt is removed
The tools used are (the six-party wrench). Thermal heating parts are installed (heating co-operation). 49 (screech feet) is a measure frequently used by pliers to measure the amount of space between the slide surfaces, such as the guidance interface, the slide bearings, etc., when the machine and equipment are assembled. Cold assembly is more (small) deformation than heat assembly, and is used (transformation) or small excess. Ii. Question 1. Major repairs are a form of repair for the complete elimination of equipment defects and for the complete restoration of original plant standards. (ii) mechanical pliers use knives, most of which are used for certain parts. ( ) when working, the centre of the piston pole shall function as the centre of gravity. () 4. Home-made bearing heater heating temperature ranges from 0 to 150. ( ) 5. The tube wrench is made of multiple sizes of triggers, poles and triggers. ( )6, use 0-25mm
7 . The measurement shall be preceded by contact with the two measuring surfaces to check whether the baseline on the active kit is aligned with that on the fixed kit. (7) the cleaning quality before the parts are assembled will directly affect the service life of the equipment. () 8. Components assembly begins with the base parts. () 9 fortification during the adjustment process is the fixing of the parts and agency locations to be adjusted. ( )10. Closed circulation is equal to the sum of each constituent circulation. () 11, snail-sniffed or deformed teeth are typically repaired by a screw-strength repair method. () 12. When using double-headed and nut-linked parts, require that the double-headed screws have a certain degree of rigidity after they are spun into the parts. (13. The bottom of the key shall be in contact with the bottom of the tank, the length with both ends of the axle slot, with a certain gap between the top and the fittings on the axle. ( ) 14 in motion, tightness is adjusted by changing both sides
8. Wheels of diameter achieved. () one of the models for the 15-v belts is one of the gs. () 16. Strengthening lubricating and cleaning dust is an important way of reducing chain-carrying wear and tear. ( ) 17, high-required snail rolls, which must be assembled with a hand-rotation of the snail to determine whether the slant is too bad. () 18, high-speed rotation slide bearings have a longer operational life than scroll bearings and a higher degree of rotation precision. ( ) 19. Reverse accuracy of the main axis, including the routing of the main axis towards the circle, the movement of the axis and the flatness and stability of the rotation of the main axis. () 20, when drills are drilled, the drill is drilled at a lower rate than when drills are drilled because of their small diameter, low intensity and easy to break. () 21 the method of drilling is less precise than the method of re-drilling after wiring. () 22, hit with a hammer, should have a cushion on the parts, or struck with a copper hammer carefully. Hammer
(b) direct blows, much less work on the surface of parts. ( ) 23, when there is severe rust in the parts on the axis, only destructive dismantling can be used. () 24, broken scroll bearings, caused by fatigue or inappropriate assembly. ( ) 25, the location of the components must be stable and reliable when the position of each other is fine-tuned. ( ) 26, the source of the abnormal sound of the equipment is vibration. ( ) 27, during repairs, gears are not interchangeable, making them noise-prone. () 28, the same point as the hydraulic control system and the hydraulic transfer system, i. E., the system includes the power element, the control element and the enforcement element, all of which transmit power through the fluid. () 29, spill valves serve only as safety protection. ()30. The function of gear-style hydraulic motors is to input pressure oils and output rectangles. () 31, the distance between the sand wheel rack and the sand wheel shall be greater than 3 m
10, m. () 32 when the shape error is tested, the difference in the actual element measured relative to its desired element is the shape difference. () 33 the national standards provide for the base-pore system and the base-axis system, which should normally be followed first. () 34, when assembled, with a small amount of claving and additional mechanical processing of a component, etc., the required precision is available, indicating that the component is fully interchangeable. () 35 the scroll bearings must be washed with a brush and a cotton veil before assembly, so that they can be cleaned. () thirty-six (36) scroll bearings with low neck velocity are suitable for lubricating and lubricating when the axle velocity is high. () 37 the chronometers commonly used are 0. 001 mm. () 38 for lubricating oils, the number of which is expressed in numerical terms, the larger the value, the more viscous it is, and () 39 for the grouping of nuts, which are to be sharpened by a circle or square distribution. ()40
When dismantling or repairing high pressure containers, all excretion valves shall be opened so that the packaging is free of media. (), 41, the cold welding of cast iron is the most likely to produce white cortex, cracks and higher requirements for operating techniques. (), 42, after the repair test of the centrifuge pump, the pump cavity shall be filled with liquids and then tested. (),43, the air-rotation test for the equipment requires that the main axis be rotated at a maximum rotation rate of 10min, that the temperature of the slide bearing is not higher than 60, and that the temperature is not higher than 30(), 44, when the mechanical equipment is dismantled, it shall be carried out in the same order as at the time of assembly. (45) the installation of saws should be sensitive not only to the direction of the tip of the teeth, but also to the degree of ease. () 46, high-range card meters are used to measure the height and angle of the parts. () 47, . Attitudes can only be used to measure the outer angle. () 48, hydraulic cylinders are devices for converting hydraulic energy into mechanical energy. (49) the stifling is for two tests
12, the difference between the surfaces. () 50. The more rough the surface of the parts, the better the grinding performance. (iii) option 1 and the installation of v-wheels require that they have a diameter (a) times the diameter of the wheel. A. 0. 0025-0. 0005 b. 0. 025-0. 005 c. 0. 25-0. 52. When examining the gear sides with lead silk, the diameter of the lead wire used should not exceed four times the margin of the gear sides (b). Maximum b. Smallest c. Medium 3, in hydraulic motion, to change the speed of the piston. A. Switching to valve b. Throttle c. Safety valve 4 and uppermost angle of standard jab drill 2 are (b). A. 1102 b. 1182 c. 12525 modulation is thermal treatment (c). A. Zirconium + cryogenic backfire b. Zirconium + temperature backfire c. Zirconium + high-temperature backfire vi. Angular steel should be corrected (b). B. Distortion 7. A combination of two or more parts into part of the machine, known as (b). Parts b. Component c. Combination module 8, mechanical anti-fine devices, have anti-fine devices. B. Precedures c. The bearings for locking the nut 9, bearing both the rudder and the axis direction are (c). A. Propulsion bearing b. Push bearing c. Propulsion bearing 10 and deep ditch bearings are installed in the order that when the inner circle and the axis neck are tighter and the outer circle and shell hole are looser (b). B. Loading of the bearing on the axis
