5results about How to "Guaranteed machining dimensional accuracy" patented technology

The invention relates to the field of non-traditional machining, in particular to a hole forming method for a turbine blade. The hole making method provided by the invention comprises two steps: firstly, according to the spatial position and shape of a to-be-processed gas film hole of the turbine blade, completing electric spark forming processing of all gas film round holes and special-shaped gas film holes in the turbine blade; and then an electrolytic grinding combined machining head is used, the remelting layer with the expected thickness is removed through the combined action of electrochemical dissolution and mechanical grinding, and electrolytic grinding and polishing of the inner wall of the air film hole are achieved. According to the method, the problem of a remelting layer remained in the film hole in electric spark machining can be solved, the sharp corner position in the film hole is rounded, and stress concentration is avoided.

The utility model relates to a processing device which is used for punching and chamfering a workpiece, the processing device comprises a bearing unit which comprises a base, a processing table and a mounting platform, the processing table is mounted on the base, and the workpiece is detachably mounted on the processing table; the mounting platform is movably connected with the base, and the mounting platform is driven to move in the first direction; the punching unit comprises a first mounting seat and a punching assembly, the first mounting seat is connected with the mounting platform, and the punching assembly is movably arranged on the first mounting seat; the punching assembly moves to the opposite side of the to-be-machined face of the workpiece and is driven to move in the second direction so as to conduct punching operation on the to-be-machined face; wherein the second direction is perpendicular to the first direction. According to the utility model, the machining efficiency can be improved, so that the yield is effectively improved, and as the placement position of the workpiece is relatively stable, the position does not need to be frequently replaced, the machining size precision can be ensured, and the stability of the machining precision is guaranteed.

The invention discloses a hoop pressing forming device which comprises a hydraulic oil cylinder, an upper die frame, a hoop batten, a pressing die, a positioning rod, a lower die base, a shape correcting die, a connecting bolt and a gantry frame lower portion operation platform. The upper die frame comprises a connecting plate, a rib plate, a threaded support plate and a support plate with holes, a long-strip-shaped space is formed between the threaded support plate and the support plate with the holes, the free end of the hoop batten can penetrate through the long-strip-shaped space in a barrier-free mode conveniently when the hoop batten is pressed or shaped, and the lower die base is fixed to an operation platform on the lower portion of the gantry frame. The lower die base comprises a positioning plate, a lower die block, a die base bottom plate and a limiting plate. The hoop pressing and correcting device is reasonable in structural design, automatic pressing and correcting of hoops can be achieved, it is guaranteed that the hoop pressing quality is stable, and it is guaranteed that the size precision meets the design requirement.

This invention discloses a dual-station steering gear housing machining fixture in the same direction and its usage method. It includes a base with a first machining position on the base. The first machining position has a first mounting surface (higher on the outside, lower on the inside) and a second mounting surface. The first mounting surface is located on the left side of the first machining position, and the second mounting surface is located on the right side. A left-section positioning mechanism is disposed on the first mounting surface for positioning the left half of the steering gear housing. A middle-section support and clamping mechanism is disposed on the left half of the second mounting surface for supporting, clamping, and positioning the middle section of the steering gear housing. A right-section positioning mechanism is disposed on the right half of the second mounting surface for positioning the right half of the steering gear housing. This invention effectively avoids dimensional deviation problems, improves the stability and accuracy of clamping, effectively reduces production costs, significantly reduces the probability of human error, and significantly reduces equipment modification costs.

This utility model relates to the field of shielding sheet processing technology, and in particular to a stamping positioning fixture for positioning shielding sheets to achieve precise stamping. It is used to position the shielding sheet for stamping processing, and includes a fixed plate and a changing template. The lower end of the fixed plate has a receiving groove, and multiple long grooves extending through the upper part of the fixed plate are formed within the receiving groove. The changing template is mated in the receiving groove, and multiple support strips matching the long grooves are provided on the changing template. The support strips cooperate with the long grooves to form a groove structure for positioning the shielding sheet. The modular design effectively improves the accuracy and adaptability of the shielding sheet stamping. The cooperation between the fixed plate and the changing template, along with the dual positioning function of the positioning pins, ensures the dimensional accuracy of the outer and inner frames of the shielding sheet, meeting the high-precision requirements of electronic equipment for interface shielding structures.