30results about How to "Zero scrap rate" patented technology

The invention discloses a processing method of a milling housing. A first plum blossom hole is formed in the housing and formed through cutting machining and abrasive machining on a housing substrate. The processing method is characterized in that during the cutting, the empirical formula of a cutting speed is as follows: V=3.14*D*n*eta<2> / 1000, wherein V represents the cutting speed with a unit of m / min; n represents the revolving speed of a machine tool spindle with a unit of rpm; D represents a cutting radius ranging from 260mm to 360mm; eta<2> is a coefficient ranging from 0.05 to 0.08; the smaller the difference between the size of the plum blossom hole and a design value is, the larger the value of the plum blossom hole is; and otherwise, the value of the plum blossom hole is smaller. By means of the processing method of the mill housing, the mill housing which meets the accuracy requirement can be processed. According to the processing method, the dimensional tolerance of diagonal plum blossom holes of the mill housing are smaller than or equal to 0.01mm, the total tolerance is smaller than or equal to 0.02mm, and the straightness of each hole is smaller than or equal to 0.01mm. With the adoption of the method for processing the housing, under the condition that smooth and efficient processing is guaranteed, the housing substrate cannot be scrapped, and the scrappage rate is zero under the condition that the processing efficiency is improved by over 20%.

The invention relates to a vehicle shock absorber piston rod spraying technology. The vehicle shock absorber piston rod spraying technology comprises the following steps of: coarse grinding, degreasing, surface roughening, non-spraying surface protection, preheating, spraying and fine grinding. When a piston rod is treated according to the spraying technology provided by the invention, the performances such as the binding force, the coating intensity, the coating thickness, the abrasion resistance, the corrosion resistance and the like of a coating of the piston rod are all superior to those of a durionise layer, and the cost performance of the coating is also superior to that of the durionise layer, so that the technology is a precedence technology used for replacing a durionise technology; and particularly, the technology does not pollute the environment, is beneficial to improvement of the working environment and the health and the safety of an operator. The technology has the advantages that production period is short, production efficiency is high, defective rate is low, the treated vehicle shock absorber piston rod has good rust-proof performance, good abrasion resistance and long service life; moreover, automation operation is easily realized, production efficiency is high and the production cost is lowered.

The invention relates to a ratchet wheel locking type impeller welding clamp with the auxiliary discharging function and a control method thereof. The clamp comprises a base, a center shaft, a clamping ring, a step bolt, a compression spring, an ejector pin, a clamp cover plate, a pawl, a torsion spring, tension springs, tension spring columns and a handle, wherein the center shaft is located in the center of the base, a spigot is formed in the base and matched with a clamping ring spigot, the clamping ring and the base are provided with the tension spring columns respectively and are connected through the tension springs, a screw hole is formed in the base, the step bolt is installed on the base, the handle is installed on the clamping ring, the clamping ring is provided with notches, the clamping ring and the clamp side pawl form a ratchet wheel self-locking structure, the ejector pin is arranged in the base, a compression spring is arranged on the ejector pin in a sleeving mode, the clamp cover plate is installed on the base and is provided with a through hole for one end of the ejection pin to penetrate through, and the lower surface of the clamp cover plate is in contact with a supporting universal ball. The clamp has the advantages that clamping is simple and fast, positioning is accurate, the welding quality is reliable, the surface smoothness is high, the rejection rate is zero, the production efficiency is high, and the labor intensity is low.

The invention relates to a welding clamp of a water pump impeller. The welding clamp comprises a rotating base, a mold seat, a pressing and rotating device, a friction transmission pair, a portal frame, a discharging device and a one-dimensional numerical control workbench. The mold seat is mounted on the rotating base and is coaxial with the rotating base, and the rotating base is mounted on the one-dimensional numerical control workbench. The pressing and rotating device is mounted on the portal frame. One end of the friction transmission pair is mounted on the pressing and rotating device, and the other end of the friction transmission pair is mounted on the mold seat. The discharging device is mounted on the lower portion of the rotating base. The portal frame is mounted above the rotating base in a stretching-over manner. It can be guaranteed that a rotating shaft of the pressing and rotating device and the rotating base are coaxial by adjusting the portal frame and the pressing and rotating device. Compared with a traditional welding device, the welding clamp is simple and fast in clamping and accurate in locating; through combination with the modern laser welding process, fast welding can be achieved; the welding quality is reliable; the zero rejection rate is achieved; the production efficiency is high; and the labor intensity is low.