299results about How to "Ensure adequate lubrication" patented technology

The invention discloses a plastic motor case and bearing device installing method, where the bearing device comprises gland, oil containing bearing and oiled felt, and the method comprises the steps of: 1) firstly injection-moulding a plastic motor case with bearing cavity for reserving; and II) placing the oil-containing bearing and oiled felt in the bearing cavity, and then fixing the gland on the bearing room to fix them in the bearing cavity. And it has advantages of simple process, low manufacturing cost, coaxial matching, low operating heat and long service life.

Disclosed is a compound heat exchange unit equipped with a first air-cooled heat exchange unit (5) that cools cooling water for the heat-generating body of an automobile other than the internal combustion engine and a second air-cooled heat exchanger unit that cools a coolant for vehicle air conditioning. The first air-cooled heat exchange unit comprises an upstream tank into which cooling water flows, a downstream tank from which coolant flows, a flow path member that connects the upstream tank to the downstream tank, radiator fins which are layered alternately with the flow path member, and a water-cooled heat exchange unit that cools the coolant. The water-cooled heat exchange unit is disposed within the downstream tank; at the upper part thereof there is an inlet port into which the coolant flows, and at the lower part thereof there is an outlet port from which the coolant flows. By means of the aforementioned heat exchange unit, it is possible to prevent accumulation of oil mixed with the coolant, heat exchange efficiency can be improved, and reduced size can be achieved.

The invention discloses an ultrasonic elliptical vibration extrusion device and a vibration extrusion processing method for carrying out surface finishing of a part by using the same. The ultrasonic elliptical vibration extrusion device comprises an amplitude transformer, four excitation sources with the same structure and an extrusion tool, wherein the extrusion tool is arranged on the output section of the amplitude transformer; and the four excitation sources are respectively arranged in the four grooves of the excitation section of the amplitude transformer. In the vibration extrusion processing process, an extrusion head makes the ultrasonic vibration in an elliptic orbit relative to the processed surface of the part under the driving of the excitation sources through adjusting an extrusion contact angle between the part and the diamond extrusion head and the processing parameters of ultrasonic elliptical vibration extrusion device. On one hand, the device reduces an extrusion force by utilizing the pulse impact action of the ultrasonic vibration, and thereby, the extrusion process can be applied to thin-wall parts and long and thin parts; on the other hand, the front direct impact is avoided and the sliding friction of the extrusion head and the processed surface of the part is reduced even eliminated by utilizing the separation characteristic and the movement locus characteristic of the elliptical vibration, and thereby, the surface roughness of the processed surface of the part is reduced, and the service life of the extrusion head is prolonged.