39results about How to "Avoid damage to parts" patented technology

A driving control apparatus of a rotary brush, which controls a drive of the rotary brush disposed in a suction body of a vacuum cleaner, is disclosed. The driving control apparatus includes a fixing bracket disposed in a suction body of a vacuum cleaner, a link unit pivotably connected to the fixing bracket, a pedal unit connected to one side of the link unit, and a pulley unit to move in combination with the link unit and to connect or separate a driving belt to or from a driving shaft, and the pulley unit is rotated in the same direction as a rotating direction of the driving belt when coming in contact with the driving belt.

Provided is a die trim section with a recess adapted to retain slugs in a stamping process. The recess may be added to existing die inserts via wire EDM, conventional surface grinding or other suitable methods. The recess extends a distance greater than the die trim punch stroke and the cross-sectional area of the recess decreases along the height of the recess.

An exhaust manifold heat dissipation cover coupling device for thermal stress and vibration deflection is proposed. The device has a function of preventing wear of a heat dissipation cover to couple an exhaust manifold heat dissipation cover, the device being able to improve the durability of various parts including a heat dissipation cover by attenuating multi-directional vibration that is transmitted from an exhaust manifold when the heat dissipation cover is installed outside the exhaust manifold, being able to prevent damage to parts due to thermal stress by flexibly coping with thermal deformation such as thermal contraction or thermal expansion even if the thermal deformation is generated by high-temperature heat transmitted from the exhaust manifold, and being able to prevent frictional damage of the heat dissipation cover due to friction by a component that slides to attenuate vibration.

A curbstone in particular for a stop has a base body of a dimensionally stable material, on the upper side of which an attached part of an at least partly elastic material is fixed at least in sections. The attached part has a compressible section on at least one side; wherein the attached part, adjacent to the side with the compressible section, has at least one hollow chamber, the shape of which can be changed when the section is pressed together. As a result, the risk of damage to the bodywork is reduced by the attached part.

The invention discloses a rotary grinding machine chuck connection structure, and aims at solving the disadvantages that the current grinding machine chuck is inconvenient in clamping and detaching of components and has low working efficiency, and the components in the clamping and detaching processes are likely to impact a grinding machine. The rotary grinding machine chuck connection structure comprises a base and a chuck seat, wherein the chuck seat is connected with a chuck body; the base is provided with an arc supporting surface, the chuck seat is provided with an arc connection surface, the arc connection surface is provided with an arc slide rail, the arc supporting surface is provided with an arc sliding chute, the arc slide rail is connected with the interior of the arc sliding chute, the front side face of the arc slide rail is a limiting face, the limiting face of the slide rail is provided with a limiting slot, and the side face of the lower part of the limiting slot is a locking slope; the base is connected with a limiting column, the front end face of the limiting column is provided with a limiting head, the front end face of the limiting head is propped against the bottom of the limiting slot in a matching manner, a limiting slope is arranged on the limiting head, and the limiting slope is propped against the locking slope in the matching manner, and the front end face of the limiting column below the limiting head is propped against the limiting surface below the limiting slot in the matching manner.

The invention discloses a technological method and a device for grinding a shaft small hole, which aims at effectively protecting a cutter, greatly prolonging the service life of the cutter, improving the adjusting efficiency, and improving the product quality and production efficiency. The device adopts the technical scheme that the device comprises a sectioning clamp, wherein the sectioning clamp is of a two-step type sleeve tube structure, the interior of the sectioning clamp is fixedly provided with a grinding sample, the grinding sample has the same structure and size with a to-be-processed shaft type part, the contour of the grinding sample is of a three-step type structure, a large end of the grinding sample is provided with a hole along the axial direction, the cutter can extend into the hole, the interior of the hole is provided with a to-be-ground small fine hole, the head of the cutter can extend into the small fine hole in the grinding sample during processing, the inner wall structure of the sectioning clamp is matched with the shape of the grinding sample, the side wall of the grinding sample is provided with a notch along the axial direction, the side wall of the sectioning clamp is provided with an observation window corresponding to the notch of the grinding sample, and the internal structure of the grinding sample and the grinding position of the cutter can be conveniently observed through the notch and the observation window.

The invention discloses a superplastic forming diffusion connection integral forming mold and method for parts with reinforcing ribs. According to the part size, the size of a part blank is calculated, the blank is circled to be welded to form a cylindrical blank, a cylinder obtained after mold insert, reinforcing and seal operation finishing is put into a mold cavity, a seal ring is arranged on the mold, after mold assembly, heating is carried out, after the superplastic process is finished, the reinforcing ribs and the cylinder are completely attached to be subject to the diffusion connection process, cooling and mold stripping are carried out, and the cylindrical part with the reinforcing ribs is obtained. By means of the superplastic forming / diffusion connection integral forming technology, the titanium alloy cylindrical part with the reinforcing ribs is formed, the problem that cooling forming of titanium and a titanium alloy is difficult is solved, and it is ensured that the formed part is free of springback, the appearance is accurate and the machining allowance is small; the material utilization rate is improved, the weight of part components is effectively reduced, the working procedure and the cost of assembling connection are reduced, the mold cavity and a part inner cavity are independently sealed, the working procedure needed by the part is further reduced, the cost is reduced, and the time benefits of part machining are improved.