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

The invention relates to a method for processing the blades of injection propulsion unit, wherein it controls the process allowance of casting element, to improve the check and machine on each shaping surface of blade 2; it uses ultrasonic wave detector to detect the wall thickness of oil hole 25, improve the accuracy of curvature of blade 2 in double-phase stainless blade 1, and the control ability of blade 2; the processing accuracy of long lubricant hole of blade 2 is improved, to improve the process efficiency and accuracy of blades 1, 2. The invention's quality can reach international standard.

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 belongs to a composite material molding technology, and relates to helicopter composite material paddle fatigue test piece molding technological process which is suitable for helicopter composite material technological process molding. According to the invention, a platform thickness spacing tool is adopted, an interval between two splints of a paddle fatigue test piece is effectively ensured, and simultaneously the positioning of the spacing tool can insure symmetry of the two splints; and a working procedure of numerical control processing is directly omitted from a technical process, furthermore a manufacturing cycle is also shortened, once alternating detection qualification rate of the paddle fatigue test piece is improved, the rejection rate of the paddle fatigue test piece is zero, and the stability and the smoothness of the assembly process of the paddle fatigue test piece are ensured.

The invention relates to an automatic bending and forming welding fixture for a motor stator. It is fixed on the fixture bracket, two bending and one-time forming cylinders are respectively installed on the two bending and one-time forming cylinder mounting plates, and two one-time forming bending bearings are respectively installed on the front ends of the two bending and one-time forming cylinders. The secondary forming cylinders are respectively installed on the two bending secondary forming cylinder mounting plates, and the two secondary forming bending bearings are respectively installed on the front ends of the two elbow clamp cylinders. The elbow clamp cylinder is installed above the linear guide rail, and the centering module passes through The ejector pin is connected with the jacking cylinder, and the positioning module and the height-fixing module are located on both sides of the centering module. The invention is simple, quick, accurate in positioning, can realize rapid welding in combination with the laser welding process, has high welding quality, zero scrap rate, high production efficiency and low labor intensity.

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 die cavity locating welding jig with an auxiliary blanking function for an impeller and a control method. The die cavity locating welding jig comprises a base, a central shaft, a compression spring, a top pin and a clamp cover plate; the base is provided with a seam allowance which is matched with another seam allowance in the lower end of the central shaft, the central shaft is mounted on the base, the central shaft is provided with a plurality of die cavities matched with a blade, the upper end of the central shaft is provided with a seam allowance for locating a rear cover plate, the seam allowance in the lower end and the seam allowance in the lower end are coaxial, the top pin is mounted in the base, the compression spring sleeves the top pin, the clamp cover plate is mounted on the base, the top pin is used in a blanking position to push out a workpiece, the compression spring plays a resetting role of the top pin, a semi-finished product of which A surface welding of the impeller has been finished is placed in the die cavity of the central shaft, the upper surface of the base and an impeller semi-finished product are flatly attached, and the rear cover plate is placed in an upper end opening of the central shaft to finish workpiece clamping. The die cavity locating welding jig is simple, easy and fast in clamping and precise in location, reliable in welding quality, high in surface smoothness, high in production efficiency and low in labor intensity and has zero rejection rate.

The invention relates to a spin welding oil cup clamp capable of preventing welding oxidation and a control method. The clamp comprises a hanging basket part, a left clamp part, a right clamp part and shielding gas passages; the left clamp part and the right clamp part are respectively installed at two sides of the hanging basket part; the shielding gas passages are respectively installed in the middle part of the left clamp part and the middle part of the right clamp part; the shielding gas passages are used for blowing protecting gas out when welding to prevent oxidation stain of workpieces during welding and keep the surface of workpieces clean; the oil cup is placed on the clamp; a workpiece is tightly clamped with the left clamp part and the right clamp part at the same time; the hanging basket part rotates and the workpiece rotates along with the turning axle of the hanging basket; through welding heads, welding of multi edges sharing a same cross section is realized; and the left end and the right end can be welded at the same time. Compared with traditional welding devices, the clamping is easy and quick and is accurate in positioning; combined with modern laser welding technology, quick welding is realized; the welding quality is reliable; disability rate is as low as zero; the production efficiency is high and labor intensity is low.

The invention discloses a manufacturing method for an airplane part stretch-forming mold made of a resin matrix composite and mainly aims to solve the problems that existing molds are large in manufacturing difficulty, hard to store and large in weight and cannot be repaired. The provided manufacturing method for the airplane part stretch-forming mold made of the resin matrix composite comprises the steps that a matrix and a surface are manufactured with the resin matrix composite; and then the airplane part stretch-forming mold is machined and manufactured through a numerical control machine tool. By means of the manufacturing method, the mold using rate is increased, especially, the part productivity is improved, the mold manufacturing cost is reduced, and the mold manufacturing period is shortened.

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.

The invention discloses an Si-microchannel plate base integral oxidation anti-deformation constraint device and belongs to the technical field of photoelectron devices, aiming to overcome the defect of deformation of the Si-microchannel plate base due to oxidation. The anti-deformation constraint device is characterized in that a left guard plate and a right guard plate clamp one retainer ring, the guard plates and the retainer ring are made of sapphire crystals and shaped as circular discs having the same outside diameter, the middles of the guard plates are provided with pores uniformly, theguard plates are 2-3mm in thickness, and the retainer ring is 25-30mm in inside diameter and 350-400 microns in thickness; a plurality of clamp slots are uniformly distributed transversely in a groove-shaped horizontal clamp mount, the width of the clamp slots is greater than the total thickness of the two guard plates and the retainer ring by 20-30 microns; the rims of vertical hold-down barrelsare provided with elongated pores; the horizontal clamp mount and the vertical hold-down barrel are both made of quartz glass; the two guard plates and the retainer ring are positioned in one clamp slot or held down by the upper and lower vertical hold-down barrels, and the rims of the two vertical hold-down barrels are in opposite arrangement. The tolerance of flatness of the Si-microchannel plate is smaller than 10 microns after integral oxidation.