69results about How to "Eliminate grinding process" patented technology

The invention provides a seat headrest rod and a manufacturing process thereof and relates to the seat headrest rod with a positioning opening slot and the manufacturing process thereof. The invention aims to provide a safe and reliable seat headrest rod and a seat headrest rod manufacturing process with high processing quality and high production efficiency. The seat headrest rod comprises a cross bar and two upright rods, wherein the two upright rods are respectively fixedly connected to the two ends of the cross bar; the upright rods are hollow tubes; a plurality of opening slots are formed on at least one of the upright rods along longitudinal direction; the opening slots are composed of upper side walls, slot bottoms and lower side walls; the external ends of the upper side walls arevertically connected to the tube walls of the upright rods; the upper ends of the slot bottoms are vertically connected to the internal ends of the upper side walls; the internal ends of the lower side walls are fixedly connected to the lower ends of the slot bottoms; the external ends of the lower side walls are fixedly connected to the tube walls of the upright rods; the lower side walls are inclined downward from inner to outer; and the thicknesses of the upper side walls, the slot bottoms and the lower side walls are almost as same as the thicknesses of the tube walls of the upright rods.

The invention relates to a process tool for drawing a branch pipe of a small-bore collecting tube. The process tool is characterized in that the diameter of a mold and the outer diameter of a guide sleeve are equal to the inner diameter of the collecting tube; a telescopic rod of an oil cylinder, the guide sleeve and the mold are coaxially arranged, and the guide sleeve and the collecting tube are axially positioned by virtue of a positioning device; a horizontal ball hole matched with the telescopic rod is formed in one end, fixedly connected with the guide sleeve, of the mold, a vertical ball hole is formed in the side wall of the mold along the radial direction and is communicated with the horizontal ball hole to form a steel ball channel, a plurality of steel balls are placed in the steel ball channel, the diameter of the steel ball at the uppermost end in the steel ball channel is minimum, the diameters of the steel balls under the steel ball at the uppermost end gradually increase, and the number of the steel balls is larger than the drawing number of times of a to-be-formed branch pipe. The process tool has the beneficial effects that by adopting a mode of horizontal force application and vertical stress, the straightness and surface quality of the collecting tube can be well guaranteed, the intensive utilization of the thermal energy and the efficient utilization of materials are realized, the automatic control is realized in heating and drawing processes, and the labor intensity of a worker is greatly alleviated.

The invention provides a surface strengthening treatment technology and a surface strengthening treatment device for actively and rotatablely rolling and planishing the head of a roll compactor aiming at the surfaces of the plastically-deformed parts, belonging to the technical field of the manufacture of machinery parts. The technology comprises the step of rotatablely planishing by a rotated compactor head by the means of offsetting the axis of a part to be machined, so that the surface of the ball head of the compactor head can be evenly worn; the rotation means that a motor drives a driving shaft with the compactor head to forcefully and rotatablely move, the flatly-rolled compactor head supplementarily rotates around the axis of the flatly-rolled compactor head to start the planishing and strengthening work; and the offset means that the center of the compactor head offsets relative to the axis of the rolling strengthening parts. Through the surface strengthening treatment technology and the surface strengthening treatment device, the optimized combination among the surface machining fineness value, the surface-layer microhardness value and the residual stress value of the first compression can be guaranteed, therefore the technology and the device are suitable for the final remedying and the surface strengthening of the parts. By adopting the device, the wearing of the compactor head is reduced; and therefore, the technology and the device can be reasonably used for industrial enterprises which manufacture the important parts.