31results about How to "Eliminate static friction" patented technology

A high performance hard disk drive is disclosed in which a flying read / write head runs in contact or in near contact with a rotating platter. In this design there is no wear of the hard disk platter or flying head due to both head and platter being coated with an amorphous carbon that has an exceptionally low coefficient of friction in a sealed, inert gas environment. The overcoat contains carbon in the range between about 52 and 80 atomic percent and hydrogen in the range between about 20 to 48 atomic percent. There is no lubricant required in this design, which eliminates a significant cause of hard drive failure from oxidation of the lubricant, stiction and rippling of the lubricant. This contact method achieves a high areal density with no wear, within a robust, hermetically sealed environment.

A device for feeding packaging blanks (3) to a packaging machine has a magazine with two shafts (7) mounted at the bottom for supporting the blanks (3). The shafts (7) are brought to rotate at constant speed in opposite directions to each other, hence eliminating the static friction from the bottom of the magazine. An angle is formed between the shafts (7), so that a small, forwardly directed force component contributes to the movement of the blanks (3). The dynamic friction is used to move blanks (3) towards a gate (2) at the end of the magazine, and only a small, constant feeding force (A) from a pusher is necessary for the movement.

The invention discloses a ground tilt monitoring device .The ground tilt monitoring device comprises a device shell, a suspension frame and a processing circuit board are arranged in the device shell, two capacitive sensors are orthogonally arranged on the suspension frame, each capacitive sensor comprises capacitor stators, capacitor rotors and pendulum bobs, the capacitor stators are arranged on the two sides of the capacitor rotors at equal intervals, the capacitor stators and the capacitor rotors are horizontally arranged on the same horizontal plane, the capacitor stators are arranged on the suspension frame, the pendulum bobs are arranged on the suspension frame in a hanging mode and arranged on the lower portions of the capacitor rotors to be in rigid connection with the capacitor motors, the capacitive sensors are electrically connected with the processing circuit board respectively, and a zero setting mechanism is further arranged on the suspension frame .According to the ground tilt monitoring device, when zero setting is conducted, the two capacitive sensors do not influence each other, the pendulum bobs drive the capacitor rotors to move to change the space between the capacitor rotors and the capacitor stators so as to produce capacitance variable quantity, and the influence of static friction force of pendulum bobs in the prior art is eliminated; the ground tilt monitoring device is mainly used for monitoring earth tides, earthquake precursors and tilting deformation of an earth crust, and the ground tilt monitoring device is simple in structure, good in stability, high in precision and high in output linearity.

The invention discloses a forming mold for a U-shaped spring. The forming mold comprises an upper die and a lower die, wherein the lower die comprises a lower die body, forming pin rollers, a lower die protruding block and a limiting spring; a forming cavity with an opening in the upper part is formed in the lower die body; the upper die is arranged in the forming cavity; two square holes are formed in the left side and the right side, close to the top edge, of the lower die body respectively; the forming pin rollers are arranged in the square holes in the left side and the right side respectively; and the sides, away from the middle of the lower die body, of the forming pin rollers are connected with limiting springs, and the other ends of the corresponding limiting springs are fixed to the side ends of the lower die body on the corresponding sides. According to the U-shaped spring manufactured through the method, the thickness of the formed U-shaped spring cannot be reduced, and the product force value performance of the U-shaped spring is prevented from being affected; and the U-shaped spring is prevented from being trumpet-shaped after being formed, the risk that a product is separated from a test tool when a force value is tested is prevented, and safety accidents are prevented.

The invention discloses a high-efficiency and energy-saving material grinder which comprises a rack, a feeding mechanism, a cutter component, a cutter adjusting device, a discharging device and an air cooling device. The feeding mechanism comprises a storage bin, a uniform feeder, a pusher plate and a stepping drive component for driving the uniform feeder and the pusher plate to move materials intermittently. The cutter component comprises a fixed cutter bed and a movable cutter drum, which have arc-shaped parallel working surfaces and are coaxial to each other. The cutter adjusting device comprises a gap measurement and control component, a horizontal adjustment mechanism and a vertical adjustment mechanism; the horizontal adjustment mechanism and the vertical adjustment mechanism are connected with the fixed cutter bed and push the fixed cutter bed to move; and the gap measurement and control component dynamically measures the gap between the fixed cutter bed and the movable cutter drum and controls the motions of the horizontal adjustment mechanism and the vertical adjustment mechanism. The discharging device comprises a discharge passage, a discharge plate and a vibrator. The air cooling device comprises an arc-shaped guide jet device and an exhaust duct, the arc-shaped guide jet device is provided with an air inlet and a plurality of jet holes facing the working surface of the movable cutter drum. The material grinder has the advantages of high efficiency, low energy consumption, long cutter life and high product quality.