44results about How to "Guaranteed contour" patented technology

A combined grinder with multiple grinding heads for grinding the straight rolling track and slide block on the track is composed of a machine body, two vertical columns, a transverse beam installed to said vertical columns, a tool carriage on said transverse beam, 2-4 grinding heads (including vertical and horizontal grinding heads), and an abrasive disc repairing device.

The invention discloses a machining method of a thin-wall abnormally-shaped metal casting. By the adoption of the machining method of the thin-wall abnormally-shaped metal casting, the whole thin-wallabnormally-shaped metal casting is cast and formed, and then machining operation of the appearance outline, the end and inner cavity installation parts of a casting blank is conducted according to the follow-up steps. The corresponding machining allowances are reserved in the rough machining process, the semi-finishing process and the finish machining process of the machining process, the machining standard is timely adjusted according to the wall thickness uniformity degree each time machining operation is accomplished, and the material object correction of the machining standard is accomplished on a machine tool through re-machining operation of a technological pin hole, and therefore the accumulative error, caused by the micro deviation, of the follow-up machining operation can be eliminated as much as possible in the machining process of the large-size thin-wall abnormally-shaped metal casting, the outline degree of the appearance outline can be guaranteed under the condition thatthe situation that the end and the inner cavity installation parts are machined in place is guaranteed, and the uniformity of the wall thickness can also be guaranteed.

The invention discloses a Z-axis air cylinder support structure of a three-gantry five-axis linkage numerically-controlled milling machine. The Z-axis air cylinder support structure of the three-gantry five-axis linkage numerically-controlled milling machine comprises a base, gantries mounted on the base, and numerical control systems for driving and controlling the gantries, wherein the base is composed of two machine bodies arranged in parallel to form the X-axis of five-axis linkage; above the machine bodies, the three gantries in a combined moving beam structure are arranged, and a worktable is arranged under the gantries; every gantry is provided with an independent numerical control system, and the altitudes of the same positions of the gantries are identical; every gantry is composed of stand columns in transmission connection with the machine bodies, a beam mounted on the stand columns, a ram in transmission connection with the beam, and a spindle in transmission connection with the ram, a milling head is mounted under the spindle, the beam serves as the Y-axis of five-axis transmission, the ram serves as the Z-axis of five-axis linkage, and a double-support nitrogen balance cylinder is mounted on the ram.

The invention discloses a high-precision three-portal five-axis linkage numerically-controlled milling machine. The high-precision three-portal five-axis linkage numerically-controlled milling machinecomprises a pedestal, portals mounted thereon, and numerical control systems for driving and controlling the portals, wherein the pedestal comprises two sets of machine bodies arranged in parallel, which form an X axis for five-axis linkage; three portals adopting combined moving beam structures are mounted above the machine bodies; a workbench is arranged below the portals; each portal is equipped with an independent numerical control system; the same positions of all the portals have consistent contour points; each portal comprises vertical columns in transmission connection with the machine bodies, a cross beam mounted on the vertical column, a ram in transmission connection with the cross beam, and a main shaft in transmission connection with the ram; the cross beam forms a Y axis forthe five-axis linkage; the ram forms a Z axis for the five-axis linkage; a double-swing milling head is mounted below the main shaft; two rotating shafts are arranged inside the double-swing millinghead, and form a B axis and a C axis for the five-axis linkage respectively.

The invention discloses a method for milling and processing a carbon fiber sacrifice layer of a connecting plane, which is applied to milling and processing the carbon fiber sacrifice layer of a butting plane for connecting a composite material afterbody and a vertical tail of an aircraft. The method comprises the following steps: (1) positioning an assembly part of the front section of the afterbody, i.e., maintaining a product of the front section of the afterbody after assembly, and positioning the front section of the afterbody and an assembly tooling together in a processing area of plane milling equipment; (2) selecting a processing tool for the plane milling, wherein the tool is a disc type milling tool, and is made of hard alloy; (3) determining a processing technology, aligning the tool by the milling equipment, determining the allowance of milling, and determining the feeding direction of the tool processing; (4) determining parameters of the processing technology; (5) milling the butting plane by the milling equipment. The method has the advantages that the contour of the butting plane is checked by a laser tracking instrument; the contour requirement of the connecting plane of the front section of the afterbody and the vertical tail is guaranteed, and the front section of the afterbody and the vertical tail can be smoothly butted.

The invention provides a multifunctional end wall assembly welding tool and welding technology. The multifunctional end wall assembly welding tool comprises embedded iron; supporting beam assemblies are arranged on the embedded iron and used for supporting an end wall; and the tops of the supporting beam assemblies are provided with an outer contour measuring mechanism matched with the end wall, and a welding anti-deformation mechanism which corresponds to the end wall and is used for preventing deformation of the end wall are arranged on the supporting beam assemblies. The multifunctional tool provided by the invention is high in flexibility and adjustability, two procedures are integrally conducted through the tool, manpower and the space are greatly saved, and meanwhile, through the tool, prefabrication deformation prevention can be precisely conducted on the welding deformation position, and the overall outer contour radian can be ensured.

The invention discloses a rotor blade precision forging structure and a preparation method. A reinforcing rib is arranged on the back surface of a homeopathic extending section, the reinforcing rib is used as a support of the homeopathic extending section, and the strength of the homeopathic extending section close to an air inlet and exhaust edge area is improved by utilizing the reinforcing rib, so that the strength of a blade tip homeopathic extending section in the polishing process is ensured; the end surface of one end of the reinforcing rib and the plane where the blade tip section is located are arranged at intervals, so that the influence of the reinforcing rib on the blade tip structure is prevented; meanwhile, the size of the reinforcing rib in the length direction of a rotor blade precision forging body is smaller than the length of the homeopathic extending section, so that the reinforcing rib is prevented from interfering with the air inlet and exhaust edge of the blade tip section, the influence degree of factors such as elastic-plastic deformation of a metal material and residual stress release in the heat treatment process on a blade tip portion is reduced, and the profile tolerance, the torsion angle and the bending of the blade tip section are guaranteed; and the reinforcing rib is designed, so that the air inlet and exhaust edge of the blade tip section is protected in the polishing process, deformation is eliminated, the machining precision is improved, and the machining efficiency is also improved.

The invention relates to a forming tool and a method for preparing a rectangular hollow composite tubular member by using the forming tool. The forming tool comprises a body and an auxiliary piece. The body comprises a bottom plate, a left side baffle, a right side baffle and an upper baffle which are matched with one another to form a rectangular cavity. The upper ends of the left side baffle andthe right side baffle are both designed to be in a corner form extending inwards. The left side baffle and the right side baffle are detachably connected with the bottom plate, and the upper baffle is detachably connected with the left side baffle and the right side baffle. The auxiliary piece comprises a left auxiliary stop block, a right auxiliary stop block and an auxiliary flat plate. The left auxiliary stop block and the right auxiliary stop block are detachably connected with the upper end of the left side baffle and the upper end of the right side baffle respectively. The auxiliary flat plate serves as an independent piece to be placed in the rectangular cavity, and when the auxiliary flat plate translates to the upper side, the left side and the right side of the auxiliary flat plate can be clamped by the corners of the left side baffle and the right side baffle, and the length of the auxiliary flat plate is not smaller than that of the bottom plate. By means of the forming tool, the high-quality rectangular hollow tubular member can be obtained.

The invention discloses a hump stamping device of a hump pipe and a stamping method of the hump stamping device of the hump pipe. The stamping device comprises a hump forming assembly and a hump shaping assembly, wherein the hump forming assembly is used for achieving a hump forming technology, and the hump shaping assembly is used for conducting a hump shaping technology on a formed hump. The stamping method comprises the steps of blanking, circle rolling, welding, grinding and polishing, hump forming, and hump shaping. According to the stamping method, processing and manufacturing are conducted by means of a hardware stamping mould, so that the stamping speed and efficiency are greatly improved, and a product can be produced in 30 seconds; according to the technology (hump stamping device of the hump pipe and the stamping method of the hump stamping device of the hump pipe), due to inner and outer anti-deformation shaping and whole surface contact, the product profile tolerance and the product roundness can be guaranteed; and according to the technology (hump stamping device of the hump pipe and the stamping method of the hump stamping device of the hump pipe), one-time forming can be achieved, so that a product thinning rate is greatly lowered.

The invention discloses a Y-axis mounting structure of a three-gantry five-axis linkage numerically-controlled milling machine. The Y-axis mounting structure of the three-gantry five-axis linkage numerically-controlled milling machine comprises a base, gantries mounted on the base, and numerical control systems for driving and controlling the gantries, wherein the base is composed of two machine bodies arranged in parallel to form the X-axis of five-axis linkage; above the machine bodies, the three gantries are arranged; a worktable is arranged under the gantries, every gantry is provided withan independent numerical control system, and the altitudes of the same positions of the gantries are identical; every gantry is composed of stand columns in transmission connection with the machine bodies, a beam mounted on the stand columns, a ram in transmission connection with the beam, and a spindle in transmission connection with the ram, a milling head is mounted under the spindle, the beamserves as the Y-axis of five-axis linkage, and the ram serves as the Z-axis of five-axis linkage; the front end of every beam is provided with an upper linear rail and a lower linear rail which are arranged in a staggered mode from front to back to disperse bearing force.

The invention provides a clamp for machining a plastic impeller of a water pump for an automobile engine. The clamp comprises a backboard, a tensioner column and a screw, wherein the tensioner column is formed by two or more than two tensioner pieces, and one end of the tensioner column is fixedly connected with the center of one side of the backboard; the other end of the tensioner column is provided with internal threads, and the screw is provided with external threads; and when the screw is turned into the internal threads of the tensioner column through the external threads, the diameter of the tensioner column increases. The clamp provided by the invention can ensure the profile control and the concentricity of the plastic impeller of the water pump for the automobile engine, improves the precision of the outer circle and the tapered surface of the plastic impeller of the water pump for the automobile engine, reduces the runout of the impeller in rotation, and improves the rotation precision of the impeller.

The invention discloses a vertical disc milling cutter device. The vertical disc milling cutter device comprises a cutter handle and a cutter disc, wherein one end of the cutter disc is detachably andfixedly connected with one end of the cutter handle, at least five blade grooves are circumferentially formed in the periphery of the other end of the cutter disc at intervals, a finishing blade is fixedly connected with the interior of at least one blade groove through an adjusting bolt, and rough blades are fixedly connected with the interiors of at least four blade grooves through fixing bolts. According to the vertical disc milling cutter device, the machining effect of a combined surface of a cylinder body and a top cover is improved.

The invention discloses a reinforcing fiber soft mold forming method and application for composite material component forming. The method is characterized in that a metal false piece which is completely consistent with the outline dimension of a composite material reinforcing rib structure component is machined through a mechanical manufacturing method, and a reinforced fiber soft mold tool with acertain rigidity used for forming the composite material component is manufactured through the metal false piece; and through the soft mold tool, the pressure applied by a hot pressing tank can be uniformly and accurately transferred to the composite material reinforcing rib structure component, so that the thermal hysteresis effect of the reinforcing rib part is avoided, the appearance size andthe contour degree of the reinforcing rib strip are guaranteed, and meanwhile, the manufacturing efficiency of the workpiece is improved.

The invention provides a manufacturing process and equipment for a hyperconventional-size conformal curved surface reflecting plate. The manufacturing process comprises the following steps of: performing segmented numerical control processing on the conformal reflecting plate, and integrally riveting the conformal reflecting plate by using a conformal tool; designing segmented reflecting plates of the conformal reflecting plate according to the specification data of the pre-stretched material, and processing the conformal reflecting plate in a segmented manner by using five-axis numerical control processing, rough and fine processing and natural aging processes to obtain segmented reflecting plates; using a conformal assembly tool conformal with the conformal reflecting plate to rivet the segmented part of the segmented reflecting plate so as to assemble the conformal reflecting plate; carrying out low-temperature destressing by utilizing a preset temperature condition and an aging condition so as to eliminate the assembly stress of the conformal reflecting plate; and the surface profile tolerance and the dimensional accuracy of the conformal reflecting plate are monitored by using a three-coordinate detection and photogrammetry method. The technical problem that processing of a large-curvature-feature conformal reflecting plate, the profile tolerance of the reflecting plate, the size precision control of installation positions such as a connector and the like are large in difficulty is solved.

The invention discloses a riveting process suitable for a die-cast piece. The riveting process is characterized by comprising the following steps: 1) a first layer of workpiece and a second layer of workpiece are provided, and are placed up and down in sequence to form a piece to be riveted; 2) a bearing mold is provided; and the piece to be riveted is put in the bearing mold; 3) the piece to be riveted is riveted on the bearing mold; and 4) the riveted workpiece in the step 3) is machined to form a final product. The riveting process has the following beneficial effects: the process firstly rivets the two layers of workpieces, and then, performs such processes as punching, typing, trimming and burr pressing to obtain the final product; and the process arrangement guarantees the product appearance profile and the coaxiality of upper and lower holes, so that the subsequent assembly is guaranteed, and the cost is largely saved.

A machining method for the plasma-sprayed surface of the internal annular surface of an annular housing is used for finishing the plasma-sprayed surface of the internal annular surface of the annular housing sprayed with plasma spraying material. The method includes the following steps: along the axial direction of the annular housing, the annular housing is divided into a plurality of continuous annular blocks, and the actual measured diameter of the plasma-sprayed surface of the internal annular surface of each annular block is measured; a spline curve is constructed for the actual measured diameters meeting design requirements, machining allowances are determined by using machining diameters measured on the spline curve, finally, the machining allowance corresponding to each annular block is set into a numerically controlled machine tool, the numerically controlled machine tool is utilized to remove the machining allowance of each annular block, so that the machined annular housing is obtained, and thereby the profile tolerance of the plasma-sprayed surface of the internal annular surface of the annular housing can meet the design requirements.