40results about How to "Improve processing rigidity" patented technology

The invention belongs to the technical field of machining and discloses a method for milling and vibration-damping a blisk. The method comprises the following specific process steps of: (1) preparing a filling material according to the proportion; (2) melting the filling material; (3) mounting a pouring clamp; (4) pouring a filling agent; (5) condensing the filling agent at normal temperature, secondarily condensing the filling agent and checking the condensing state of the filling agent; (6) mounting a filtering clamp; and (7) carrying out the abutted milling processing and chip removal processing. By pouring the filling agent between the blisk and vanes in the milling processing of vane profile five coordinates of the blisk, the method enhances the rigidity of parts in the milling processing of the vanes, eliminates the chatter marks generated at the vent tip part of the vanes during milling and reduces the roughness of the surfaces of the vanes. Meanwhile, the rigidities of the parts and a clamping system thereof are enhanced, so that the milling feed rate is increased and the milling speed can be improved.

The invention provides a rotary milling fixture device for machining a guide vane of an air compressor, which can be used to solve the problems of poor generality, poor vane machining rigidity and machining size instability existing in the traditional guide vane clamping mechanism. The rotary milling fixture device is characterized by comprising a big-head-end three-jaw chuck and a small-head-end three-jaw chuck, wherein the big-head-end three-jaw chuck is connected with a main driving disk of a machine tool by a first transition disk, the small-head-head three-jaw chuck is connected with a tip of the machine tool by a second transition disk, a big head end and a small head end of the guide vane to be machined are respectively positioned and clamped by the big-head-end three-jaw chuck and the-small head-end three-jaw chuck, and a small head end part of the guide vane to be processed is tightly jacked up by the tip of the machine tool.

The invention belongs to the technical field of material machining and particularly relates to a machining method of a slender shaft made of a 17-4PH stainless steel material. The machining method of the slender shaft made of the 17-4PH stainless steel material at least includes the steps of firstly, stress relief annealing heat treatment, secondly, slender shaft end face machining and drilling, thirdly, determination of the grinding benchmark of the slender shaft, fourthly, rough turning, semi-finish turning and penetration flaw detection, fifthly, solid solution and aging thermal treatment, sixthly, grinding treatment, seventhly, surface quenching and annealing heat treatment and eighthly, obtainment of the slender shaft, wherein the slender shaft obtained in the seventh step is subjected to finish grinding, a plug is removed, the following conventional shaft end fine dressing or end cut-off is conducted, and the finished slender shaft is obtained. By the adoption of the method, the defect that the machining rejection rate of the slender shaft made of the 17-4 PH stainless steel material is high at present can be effectively overcome, the high-precision shape of the slender shaft and the surface roughness machining of the slender shaft are guaranteed, the machining efficiency of the slender shaft is improved, and the yield is increased.

The invention belongs to the field of part processing and particularly relates to a composite cutter for drilling and boring a hole and processing an end surface annular groove. A tool holder is installed on the top of a non-standard cutter body; drill blades are installed at the bottom of the non-standard cutter body; one drill blade is installed in a manner of passing through an axis of the non-standard cutter body, and the other drill blade is installed on the outer side of the non-standard cutter body; rough boring blades and radius boring blades are symmetrically installed on the outer side of the non-standard cutter body sequentially; a regulation cutter clamp is arranged above the radius boring blade on one side and is provided with a finish boring blade; chamfer blades are symmetrically installed on the outer side of the non-standard cutter body; and non-standard groove blades are arranged on the outer sides of the chamfer blades in a staggering manner respectively. By adoptingthe composite cutter provided by the invention, the cutter changing time and the cutter cost are saved, the processing efficiency is improved, and the processing cost is lowered; larger drilling force can be acquired at the same time, so that processing is lighter, the danger of drop-dead halt of the cutter is avoided, and the processing efficiency is improved; the inside and outside diameter sizes of the annular groove are more easily controlled, the quality is more reliably ensured, and the quality stability of parts is high when the parts are produced in batch.

The invention relates to a parallel-driven four-degree-of-freedom series-parallel mechanical wrist swing head. A circular guide hole is formed in an extension body, and the extension body is arrangedin a mounting frame; and an extension cylinder is arranged in the circular guide hole of the extension body; a conical sleeve is arranged on the conical surface of the extension cylinder, the inner conical surface of the conical sleeve is attached to the conical surface of the extension cylinder, the outer cylindrical surface of the conical sleeve is further attached to the circular guide hole ofthe extension body, and the conical sleeve can rotate relatively and axially move relatively in the circular guide hole of the extension body; an adjusting block is arranged on the extension cylinderthrough a threaded pair and is tightly attached to the end face of the conical sleeve; one end of a connecting rod is connected with the extension cylinder through a ball pair, and the other end of the connecting rod is connected with a movable platform through a revolute pair; the movable platform is further connected with the extension body through a universal hinge; a U seat is arranged on themovable platform and can rotate relatively around the axis of the movable platform on the movable platform, and an electric spindle is arranged on the U seat and rotate relatively on the U seat.

The invention relates to a machining center, in particular to a machining center for a gantry with four linear rails and a ram. The machining center comprises a saddle (1), and is characterized in that the vertically slidable ram (2) is arranged on the saddle (1), the left and right linear rails (3) are arranged on the saddle and are positioned on two sides of the ram, the rear linear rails (4) are arranged on the saddle and are positioned at the rear of the ram, a lead screw (5) is connected to the ram and is connected with a servo motor (6), a main motor (7) is arranged on the ram and is connected with a spindle (8) by a transmission, a tool impact cylinder support (9) is arranged on the upper portion of the spindle, and a tool impact cylinder (10) is arranged on the tool impact cylinder support. The machining center has the advantage that technical problems of poor workpiece machining rigidity and precision and the like of a spindle due to the fact that a machine tool in the prior is only provided with two linear rails and a ram is poor in rigidity when sliding can be solved.

The invention discloses a fast clamping system. The fast clamping system comprises a pedestal with a hanger, clamp fixing bases and clamps, wherein the clamp fixing bases and the clamps are movably fixed to the hanger. The clamp fixing bases are provided with mounting grooves matched with the corresponding clamps. Each clamp comprises a fastening screw rod with the two ends being provided with threads and dovetail clamping blocks located at the two ends of the fastening screw rod. The dovetail clamping blocks comprise positioning parts which are matched with the mounting grooves in the clamp fixing bases for positioning and clamping parts with dovetail structures. The positioning parts of the dovetail clamping blocks are screwed at the two ends of the corresponding fastening screw rods separately. By adoption of the fast clamping system, the multi-operation, multi-position and multi-part machining requirements can be met, and clamping rigidity is good; moreover, clamping force is evenly distributed, predeformation of parts is reduced and machining precision is improved; and the adaptability is high, the parts and the surfaces of the fixing bases can be tightly attached easily through the clamping blocks, and there is no need for workers to inspect the fitness of the bottom faces of the parts.

The invention discloses a double-bearing positioning fixture, which comprises a fixture body (1), a first supporting knuckle bearing (2), a second supporting knuckle bearing (3), a taper sleeve (5), a ball bearing (7), a gland (9), a compression knuckle bearing (10) and a mandrel (11). The taper sleeve (5) is arranged on the fixture body (1) through the ball bearing (7); the first supporting knuckle bearing (2) and the second supporting knuckle bearing (3) are oppositely arranged up and down so as to form a supporting knuckle bearing outer ring; a large excircle of the fixture body (1) is a convex spherical surface so as to form a supporting knuckle bearing inner ring; a convex spherical surface used as a compression knuckle bearing inner ring is arranged on the surface of the mandrel (11); a matched end of the gland (9) and the mandrel (11) is a concave spherical surface; and the compression knuckle bearing (10) and the concave spherical surface of the gland (9) are partially matched so as to jointly form a compression knuckle bearing outer ring. According to the double-bearing positioning fixture provided by the invention, the cost is effectively reduced, a fixture structure is simplified, and up-propping lower-pulling type floating compression is utilized, so that the characteristics of high processing rigidity, high accuracy and the like are realized.

The invention discloses an automatic-centering center frame. The automatic-centering center frame is characterized by comprising a machine box, a driving device, a translation cam, an upper pressing rod assembly, a lower pressing rod assembly and pressing head assemblies. The translation cam is arranged in the machine box in a left-right sliding mode and driven by the driving device to move left and right. An upper pressing rod of the upper pressing rod assembly and a lower pressing rod are made to swing through the translation cam, so that the pressing head assemblies located on the upper pressing rod and the lower pressing rod and the pressing head assembly on the translation cam are gathered towards the axis of a workpiece to be machined at the same time, the workpiece to be machined issupported, a supporting wheel frame of each pressing head assembly can be automatically rotated according to the shape of the outer edge face of the workpiece to be machined, and it is ensured that two supporting wheels located on each supporting wheel frame are pressed on the workpiece to be machined at the same time.

The invention discloses a gear processing lathe. The gear processing lathe comprises a lathe bed, a stand column arranged on the lathe bed, a workpiece box and a B shaft box, wherein the workpiece box is movably mounted on the lathe bed in a first horizontal direction, and the axis of a workpiece revolving shaft is parallel to a vertical direction; the B shaft box is movably mounted on the stand column in the vertical direction, the axis of a B shaft is parallel to a second horizontal direction which is perpendicular to the first horizontal direction, a cutter box is mounted at one end close to the workpiece box, and the axis of a cutter revolving shaft of the cutter box is perpendicular to the second horizontal direction; for the cutter box and the workpiece box, one can approach to or be far away from the other in the second horizontal direction. The gear processing lathe is compact in structure and occupies a small area; the cutter revolving box and the workpiece revolving box can make relative movement, the cutter revolving shaft can process workpieces without extending out of the cutter box too long, so that the rigidity of the cutter revolving shaft is effectively guaranteed; processing points are distributed on the left and the right of a workpiece, so that the processing stability and the processing reliability of the workpiece are guaranteed.

The invention discloses a multi-main-shaft vertical machining center. The center is mainly composed of a plurality of sets of main shaft units, X-direction numerical control sliding tables, Y-direction numerical control sliding tables, Z-direction numerical control sliding tables, rotary tool changers and a set of machine body. According to the machining center, multi-main-shaft synchronous tool changing can be carried out at the same time, and independent compensation can be independently carried out on the length of the tool on each main shaft; and the multi-main-shaft vertical machining center is simple in structure and convenient to maintain, and is ideal drilling and milling comprehensive machining equipment.

The invention discloses a numerical control curved-tooth broaching machine comprising a broaching machine body, wherein the broaching machine body comprises a machine base, a tool box assembly, a workpiece box assembly, a numerical control device, a lubricating and cooling device and a chip removal device; the tool box assembly and the workpiece box assembly are arranged on the machine base; the tool box assembly is provided with a cutter head headstock, a cutter head, a cutter head main shaft motor, a Z-axis speed reducer, a Z-axis servomotor, Z-axis cutter head feeding and retracting guide rails, horizontal cutter position guide rails, a horizontal cutter position regulator and a horizontal cutter position locking device; the workpiece box assembly is provided with an indexing box seat, an indexing box, an indexing box locking device, vertical cutter position guide rails, a vertical cutter position regulator and an X-axis indexing servomotor and is further provided with a root angle lower seat and a root angle upper seat; the root angle lower seat is provided with vertical double-arc concentric root cone guide rails; the upper seat can slide on the lower seat; the tool box assembly further comprises a root cone regulator and a root cone locking device; and the horizontal cutter position regulator is positioned on the root angle lower seat. Compared with the prior art, the numerical control curved-tooth broaching machine has higher accuracy and rigidity in gear machining.

The invention discloses a machining method for automotive downhill reducer control levers. The machining method includes the specific steps of (1) material preparation; (2) heat treatment; (3) auxiliary hole design and turning; (4) heat treatment; (5) milling; (6) bench work; (7) finish turning; (8) heat treatment; (9) turning; (10) grinding; (11) surface treatment; (12) bench work; (13) accurate grinding; (14) bench work, specifically, removing of burrs on sharp edges; and (15) inspection. By means of the machining method, the special vehicle downhill reducer control levers can be conveniently and quickly manufactured, the workpiece production cycle can be effectively shortened, the machined parts are stable in quality, and the machining cost is greatly lowered. The machining method is simple, operation is easy, the special vehicle downhill reducer control levers are good in wear resistance and high in corrosion resistance, and the workpiece machining rigidity can be effectively improved by means of the machining method.

The invention relates to a special lathe for shaft part machining. According to the technical scheme, the special lathe for shaft part machining comprises a lathe bed, a guide rail, a first spindle box, a second spindle box, a machine frame, a first spindle, a second spindle and a first center, a second center, a first power motor, a second power motor, a knife rest mechanism and a centerless radial clamp, wherein the first spindle box, the guide rail and the knife rest mechanism are arranged on the lathe bed, a machine frame is arranged on the guide rail, and the second spindle box is arranged on the machine frame; the first power motor is arranged in the first spindle box, the first spindle is arranged at the output end of the first spindle box, and the first center and the centerless radial clamp are arranged on the first spindle; and the second power motor is arranged in the second spindle box, the second spindle is arranged at the output end of the second spindle box, and the second center is arranged on the second spindle. According to the special lathe for shaft part machining, the machined shaft part can be guaranteed to have good coaxiality and step surface perpendicularity.

The invention relates to an end face grooving cutter body. The end face grooving cutter body comprises a cutter base used for being connected with a main shaft of a machine tool. A sliding cutter holder is arranged on the cutter base. The sliding cutter holder and the cutter base are in guiding fit through guide protrusions and guide grooves. The sliding cutter holder is fixed to the cutter base through locking bolts. Holes, allowing the locking bolts to penetrate through, in the sliding cutter holder are circular holes. Long holes allowing the locking bolts to penetrate through are formed inthe cutter base. Long axes of the long holes are parallel to the guide movement direction of the sliding cutter holder. Slide grooves extending in the long-axis direction of the long holes are formedin the end, away from the sliding cutter holder, on the cutter base. Each slide groove is internally provided with a nut for connection of the corresponding locking bolt. The long holes for regulationare formed in the cutter base of the end face grooving cutter body, the holes in the sliding cutter holder are the circular holes, and therefore the size of connection holes in the cutter base is notlimited, the regulation range is wide, and the achievement of the grooving operation of large-diameter end face grooves is facilitated.

The invention discloses a positioning device. The positioning device comprises a supporting device used for supporting an instrument grillwork assembly, the supported instrument grillwork assembly comprises an instrument grillwork and an assembly extending downwards from the bottom of the instrument grillwork, and the supporting device is arranged at the bottom of the instrument grillwork and used for supporting the instrument grillwork. The supporting device comprises a supporting body and multiple lifting devices. One end of each lifting device is installed on the supporting body, and the other end of each lifting device is connected to the bottom of the instrument grillwork in a lifting manner so that the levelness of the instrument grillwork can be adjusted. By means of the lifting devices, accurate positioning is provided for installation of the instrument grillwork assembly, the equipment use cost of a machine tool and a cutter is reduced, the machining efficiency is improved, and the manufacturing period is remarkably shortened.

The invention discloses an auxiliary supporting device for improving machining rigidity of an equidistant arc surface slender shaft, and belongs to the technical field of machining of equidistant molded surface slender shafts. The auxiliary supporting device for improving the machining rigidity of the equidistant arc surface slender shaft comprises an outer supporting base and an inner supporting plate, the inner supporting plate is arranged inside the outer supporting base, the rotation center of the inner supporting plate is consistent with the rotation center of a machine tool spindle, a plurality of supporting holes are evenly formed in the inner supporting plate in the circumferential direction, each supporting hole is evenly provided with at least three elastic supporting structures in the circumferential direction, and the axes of the elastic supporting structures are arranged in the radial direction of the supporting holes. The auxiliary supporting device for improving the machining rigidity of the equidistant arc surface slender shaft can effectively improve the machining rigidity and machining efficiency of the equidistant arc surface slender shaft, can adapt to simultaneous machining of multiple shafts, and avoids interference of clamps during machining.