5098results about How to "Guaranteed machining accuracy" patented technology

The invention discloses a water-based cutting fluid used in slice machining of a hard brittle crystal material, comprising the following compositions: base oil, organic amine, organic acid, synthetic ester, emulsifier, rust and corrosion inhibitor, dispersion flocculation and hard-water resisting agent, antiseptic bactericide, antifoaming agent, coupling agent, adjuvant and a proper amount of water. Aiming at the machining techniques of inner circle slicing and outer circle slicing, the water-based cutting fluid has good generality, lubricity, strong antirust property and a long service life; when the cutting fluid is used, the machining situation can be observed easily, the cooling property is good, the cleaning and the permeability are strong, cuttings subside easily, and the machining problems of machining error, crack and the like caused by cutter blocking, abrasion and the like are solved; according to the invention, the problems that cuttings are easy to adhere and suspend, a cutter is seriously abraded, a machined product cracks easily, the accuracy is not high, the machining efficiency is low, the later period cleaning is complex and the like existing in the current slice machining of the hard brittle crystal material are solved, and further, a machine bed is protected, and the cost is reduced.

The invention discloses a floating auxiliary roller type overrun clutch which comprises an outer ring, an inner ring, rolling bodies and auxiliary rollers, wherein engagement spaces used for being engaged with or separated from the rolling bodies are formed between the outer ring and the inner ring; the auxiliary rollers are parallel to an axial line of the overrun clutch and are spaced from the rolling bodies; and the auxiliary rollers are arranged between the rolling bodies in such a way that the auxiliary rollers can move in a circumferential direction of the overrun clutch. According to the floating auxiliary roller type overrun clutch, the processing of a limiting seat is avoided, the processing process is simplified, the working efficiency is improved, and the processing cost is reduced; as the auxiliary roller structure is adopted, the axial length of the overrun clutch and the rolling bodies can be theoretically infinitely prolonged, the engagement length is prolonged, the bearing capacity of the overrun clutch is increased, the radial size of the overrun clutch under higher bearing capacity is reduced, and the service life of the overrun clutch is prolonged; and meanwhile, the probability of imbalance caused by application of a pretension force to point contact of each roller in the prior art is removed, thereby enabling each roller to keep parallel to the axial line of the inner ring.

A scanning method for manufacturing a three-dimensional object layer by layer comprises the following steps: (1), dividing each section layer of a three-dimensional object to be manufactured into a thin-wall area and a non-thin-wall area: setting a threshold of the gap width of the section profile of the three-dimensional object, and according to the gap width of the section profile in x/y direction, dividing a coating area required to be scanned into a thin-wall area and a non-thin-wall area, wherein the thin-wall area is an area of which the gap width of the section profile is smaller than the threshold and the non-thin-wall area is an area of which the gap width of the section profile is greater than or equal to the threshold; (2), according to the thin-wall area and the non-thin-wall area, scanning area by area, wherein the non-thin-wall area is scanned, relatively high photon beam or particle beam power and relatively large light spot diameter are selected, and when the thin-wall area is scanned, relatively low photon beam or particle beam power and relatively large light spot diameter are selected. By the scanning method, constraints of efficiency and precision in the process of manufacturing the three-dimensional object layer by layer are balanced to the maximum extent, so that the efficiency is ensured and the accuracy and the surface quality of a machined part are ensured.

The invention discloses an inner ring grinding device and grinding method for rotating disc type bearing machining. The inner ring grinding device comprises a base, wherein a motor frame is welded toone side of the upper surface of the base, and the upper portion of the motor frame is connected with a speed reducer through bolts; a first motor which is in transmission connection with an input shaft is fixed to the side wall where the input shaft of the speed reducer is located through bolts, and a rotating seat is fixed on the other side of the upper surface of the base through bolts; and a supporting rod is movably connected with the interior of the rotating seat through a bearing, and a rotating disc is welded to the top of the supporting rod. According to the inner ring grinding deviceand grinding method, four bearing brackets can be controlled to move oppositely by only rotating a central rod, and the height and speed can be adjusted; the bearing brackets can clamp the outer wall, the upper surface and the lower surface of the bearing, and the fixing strength of the bearing is improved; and an upper movable frame is slidably connected in a lower supporting frame, and a movable block with the bottom provided with four pulleys is slidably connected inside a sliding frame, so that the stability of a milling cutter control structure is improved, and the machining precision ofan inner ring of the bearing is guaranteed.

The invention discloses a precision numerical control milling method for thin-wall parts, and provides a processing method for reducing the milling deformation of the thin-wall parts and improving processing precision and surface quality. When a thin-wall part is finished by fine processing through end milling, the machining allowances of the side wall and a web plate are larger than those of the prior process, and are between 2 and 5mm respectively; when the side wall is processed, the axial depth ap is between 0.2 and 0.8mm, and the radial cutting width is 60 to 80 percent of the diameter of a cutting tool; and when the web plate is processed, the axial depth ap is between 2 and 5mm, and the radial cutting width ae is 10 to 20 percent of the diameter of the cutting tool. The processing method effectively slows down the reduction of the self-rigidity of workpieces and control the cutting force in the thin-wall direction when the processing efficiency is ensured, thereby effectively reducing and controlling the processing deformation of the thin-wall parts, and ensuring the processing precision and surface quality of the parts.

The invention discloses an automatic feeding and discharging device, which comprises a distribution mechanism, a dropping mechanism and a conveyance mechanism. The conveyance mechanism is arranged between the distribution mechanism and the dropping mechanism and consists of a base, a feeding mechanism, a lifting mechanism and a conveying mechanism are disposed on the base, the lifting mechanism is arranged between the feeding mechanism and the conveying mechanism, and the feeding mechanism is connected with the distribution mechanism, and is also connected with the dropping mechanism. By the aid of the joint action of the distribution mechanism, the feeding mechanism, the lifting mechanism, the conveying mechanism and the dropping mechanism, automatic feeding and discharging of pipes can be realized, labor intensity of feeding and discharging of the pipes can be greatly reduced, production efficiency is enhanced, and production cost is lowered.

The invention discloses a harmonic oscillator of a solid fluctuation gyro, which comprises a resonance ring (1), a resonance transmission part (2), a chassis (3) and a piezoelectric element (4), wherein, the resonance ring (1) is connected with the chassis (3) through the resonance transmission part (2), the resonance transmission part (2) is composed of support beams (21) which are uniformly distributed in the circumferential direction, and the piezoelectric element (4) is arranged on the support beams (21). The invention further discloses the solid fluctuation gyro provided with the harmonic oscillator. The solid fluctuation gyro and the harmonic oscillator of the invention have the advantages of high sensitivity, good sensing effect, convenient machining, low machining cost, simple mechanical balance procedure and the like.

The invention belongs to the field of sheet metal machining equipment and discloses a machining production line for sheet metal. The machining production line comprises a numerical control shearing machine, a numerical control punching machine and two or more numerical control bending machines which are arranged in sequence, the feeding side of the numerical control shearing machine is provided with a raw material rack and a locating platform, a first cross beam is arranged above the numerical control shearing machine and the numerical control punching machine, the two ends of the first cross beam are arranged across the numerical control shearing machine and the numerical control punching machine, the raw material rack and the locating platform are arranged below the two sides of the front end of the first cross beam respectively, the font end of the first cross beam is provided with a feeding mechanical arm, the rear end of the first cross beam is provided with a discharging mechanical arm, a temporary storage rack is arranged at the discharging side of the numerical control punching machine, the discharging mechanical arm corresponds to the temporary storage rack, and the numerical control bending machines are arranged at the two sides of a multistation conveying device respectively. According to the machining production line, the automation degree is high, cooperative work can be conducted without interference, and the consistency of the cooperative work is good.

The invention discloses a numerical control cutting machine, which comprises a longitudinal guide rail, a machine frame arranged on the longitudinal guide rail, and a numerical control system, a cutting control system, a transverse movement system, a lifting mechanism and a deflection device which are arranged on the machine frame, wherein a longitudinal driving rack is arranged on the longitudinal guide rail and is matched with a longitudinal driving gear; the longitudinal driving gear is arranged on the machine frame; the lifting mechanism is arranged on the transverse movement system; and the deflection device is arranged on the lifting mechanism. The numerical control cutting machine has the advantages of high production efficiency, quality of beveled edges and accuracy, low labor intensity of workers and the like and is controlled automatically in the whole process, angles of the beveled edges are easy to ensure, and the generality of workpieces is high.

An irregular-shaped radiating fin automatic assembling device belongs to the automatic assembling field and is composed of a fixed bottom plate, a divider, a turntable, a feeding mechanical mechanism, a drilling mechanism, a tapping mechanism, a welding pin feeding mechanism, a welding pin clamping mechanism, a discharging mechanical mechanism, a slag removing mechanism and clamps. The whole assembling system adopts a rotary production line and is accomplished by using eight working positions; each working position is provided with one clamp for fixing the radiating fin. The irregular-shaped radiating fin automatic assembling device has the beneficial effects of realizing automatic assembling of the irregular-shaped radiating fin, increasing the assembling efficiency, saving labor force and cost, guaranteeing the machining precision as the self-produced clamps clamp the radiating fin automatically and position the radiating fin exactly by utilizing springs, and guaranteeing scale division quality as the divider divides the scale of each working position exactly by utilizing a cam division mechanism.

The invention discloses a machining process of middle-long thin-wall blades, which belongs to the technical field of machining of blades. The machining process is implemented by a detailed process of integrated rough machining and integrated fine machining, wherein the integrated rough machining comprise the specific steps of rough machining of each surface of a blade tip, each surface of a blade root and a molded surface of a steam passage; and the integrated fine machining comprises the specific steps: semifinishing of each surface of the blade tip and each surface of the blade root, fine machining of each surface of the blade tip, each surface of the blade root and each residue, semifinishing of the steam passage and fine machining of the steam passage. According to the machining process of the middle-long thin-wall blades, the operation is simple and convenient, the use is convenient and fast, the cost is low, the machining efficiency is high, and the operation is easy and labor-saving; and the deformation of the middle-long thin-wall blades is controlled within 0 to 0.8mm, the normal machining of a subsequent mold correction process is facilitated, and the machining of each blade is finished once.

The invention discloses a clamping deformation resistant jig for machining a large-diameter elbow. Three combined clamping blocks are arranged on a clamping base plate, each combined clamping block consists of an upper clamping block, a lower clamping block, a base plate and connecting bolts, inner sides of the upper clamping blocks and the lower clamping blocks are provided with circular arc-shaped gaps and form a circle consistent with the outer circumference of an elbow to be machined after closed, the upper clamping blocks and the lower clamping blocks are connected and fastened by the connecting bolts, and the base plates are arranged at the bottoms of the lower clamping blocks and are provided with chutes. Lock bolts pass through the chutes on the base plates of the combined clamping blocks and fix the combined clamping blocks on the clamping base plate after being fastened. In the invention, the large-diameter elbow is clamped by adopting a way of directly clamping a pipe blank in a surface-contact manner, thus the elbow does not generate a radial compaction force in the clamping process and is not easy to generate the radial forced deformation and the torsional moment; in addition, the clamping deformation resistant jig disclosed by the invention is applied to machining of a large-diameter thin-wall elbow machine, thereby ensuring the machining precision of the elbow.

The invention discloses an in-process evaluation based complex spatial surface error feedback compensating method. The method comprises the following steps of processing a complex surface cutting force module through a ball-end cutter, performing dynamic compensation for a target cutter location point for workpiece pre-processing; performing in-process detection for the pre-processed workpiece to obtain geometrical information of an actual contour; evaluating error for the pre-processed workpiece through a contour degree error evaluation model; when the contour error is greater than tolerance, determining a compensation point position U1 corresponding to each contact point; guiding the compensation point position corresponding to each contact point to three-dimensional CAD (Computer-Aided Design) to obtain a compensating process contour to generate a compensating processing tool track; and performing static compensation and processing for the pre-processed workpiece and finishing the flow. Under the premise of ensuring the processing precision of part surface, the processing precision of the part is detected in process without investing fund to purchase more detection devices, so that the conveying and loading time of workpieces is shortened.

The invention relates to a rotary fixture special for drilling an automobile flywheel shell and a machining method. The holes of the automobile flywheel shell can be quickly and accurately machined. The machining method comprises the following steps of: assembling the fixture according to the connection relationship, connecting the fixture with a machine tool through a rotary fixture base, adjusting a drilling module on the right side of the fixture and a drilling template on the left side of the fixture to a vertical position and fixing by using long nuts; aligning a workpiece to be machined with two positioning pin holes by using a balance crane, pressing the workpiece by using a large pressing plate, loosening the long nuts by using a spanner to make the workpiece rotate; positioning a handle through a positioning pin, and pressing a workpiece rotary piece through the long nuts for machining the hole at one position; and repeating the steps until the holes at all positions are machined, adjusting the fixture to an initial clamping position and making the workpiece fall down to finish machining. The rotary fixture and the machining method have the advantages that: 1, machining efficiency is high, and the labor intensity of operators is greatly reduced; and 2, machining accuracy is high, defective products and waste products are avoided, and machining cost is greatly reduced.

The invention discloses a method for realizing the machining of combustion-compression ring bushes by using a combustion-compression ring bush cutting clamp, relating to a machining method for ring parts. The invention aims to solve the problems that because the existing combustion-compression ring bush is a thin-walled workpiece, the existing combustion-compression ring bush is easy to deform in the process of machining, so that the machining quality of the combustion-compression ring bush is affected, and meanwhile, the 30-equated positions of 30 molded holes of a combustion-compression ring bush machined by using the existing machining method are poor in accuracy. The clamp used in the invention comprises a base plate, a turntable, two positioning pins and four pressing plates. The method disclosed by the invention comprises the following steps of: 1, roughly turning an inner hole, an outer circumferential surface and two planes of a blank; 2, relieving stress of a semi-finished combustion-compression ring bush product; 3, carrying out finish turning on an inner hole, an outer circumferential surface and two planes of the semi-finished combustion-compression ring bush product; 4, drawing center position lines of radial holes and molded holes; 5, drilling 30 radial holes with a diameter of 5 mm; and 6, cutting and machining 30 molded holes. The method disclosed by the invention is used for machining combustion-compression ring bushes.