82 results about "Roller burnishing" patented technology

A method for processing a cast iron crankshaft to improve the torsional fatigue strength of the crankshaft includes forming oil holes into a portion of the crankshaft, treating the portion of the crankshaft to harden an annular area of the portion, and roller burnishing a length of the interior of the oil holes to an increased diameter. The roller burnished length of the oil holes extending from a surface of the crankshaft to at least beyond the hardened annular area.

A barrel polishing device for polishing a workpiece having a relatively complicated shape such as a vehicle wheel. The barrel polishing device comprises a polishing medium storage tank for storing polishing media, a base, a workpiece supporting shaft mounted on the base, and a workpiece detachably mounted on a tip part of the workpiece supporting shaft, the polishing media stored in the polishing medium storage tank being flowed by an appropriate means, and the workpiece supporting shaft being disposed so that a front side of the workpiece opposes the flow of the polishing media, the workpiece supporting shaft being rotated about an axis thereof, and a baffle member being placed in the vicinity of a back side of the workpiece.

A method of manufacturing a cam shaft that prevents cracks during the joining of a cam lobe to a shaft, and improves the degree of freedom of design of the cam lobe is provided.

By a method of manufacturing a cam shaft that after an inner circumferential surface 13 of a cam lobe 1 is subjected to treatment for residual compressive stress addition treatment, the cam lob 1 is joined to a shaft, above problem is solved. It is preferred that the residual compressive stress on the inner circumferential surface 13 of the cam lobe 1 is not less than 100 MPa. In addition, an outer peripheral surface 14 of the cam lobe 1 can be also subjected to treatment for residual compressive stress addition treatment. As the treatment for residual compressive stress addition treatment, shot-peening treatment, induction hardening treatment, barrel polishing treatment, carburizing and quenching treatment or carbonitriding treatment is performed.

The color ink-jetting print paper is produced with bleached sulfate needle leaved wood pulp, mechanical milled Italian poplar, bleached sulfate reel pulp or bleached broadleaf wood pulp and proper supplementary material and through making base paper, applying AKD glue, painting special paint, soft roller burnishing and finishing. The color ink-jetting print paper product has areal weight 70-100 g/sq m, black light density not lower than 1.2, drying time less than 20 s, color optical density not lower than 0.75, ink water dispersing time not less than 60 s, and whiteness higher than 88 %. Ithas high surface strength, and is level and smooth and results in images with bright color and clear netted points. It is suitable for color jetting printing.

The invention provides a roller burnishing tool, accurately converting very small torque displacement to axial displacement, coping with a variation in pre-working diameter, causing no setting in spite of repeated use, and causing no change in a no-load position (original position). In this roller burnishing tool (10), a workpiece is inserted in a cylindrical frame (2) provided with a plurality of rollers (1) disposed for rolling compaction to perform rolling compaction working for the outer peripheral surface of the workpiece by the rollers. The roller burnishing tool (10)includes an automatic diameter correcting mechanism (E), in which the mechanism is provided with a torque converting mechanism (T) for converting the load torque received by the rollers to the axial displacement in pressing the outer peripheral surface of the workpiece by the rollers (1), thereby automatically correcting the diameter even if the pre-working dimension varies.

There are disclosed a method and device for polishing a metal ring, which is capable of polishing a side edge of the metal ring without performing barrel polishing or polishing by grinding stones. Subsequently to a projecting step of projecting a metal ring W by clearing means 6, a first brush polishing step of polishing one edge of the metal ring W by a polishing brush 60 is performed. Subsequently, an inverting step of inverting the metal ring W whose one edge is polished by the first brush polishing step is inverted by the inverting means 10 is performed. Subsequently, a second brush polishing step of polishing the other edge of the metal ring W which is inverted by the inverting step by the polishing brush 60 is performed. Moreover, a clearing step of clearing the metal ring whose other edge is polished by the second brush polishing step by clearing means 7 is performed.

The present invention is a novel method for the repair of cast aluminum wheels that leak air due to porosity caused during the casting process. It involves deep roller burnishing the surface of the wheel under controlled operating parameters to effectively seal the porosity so that the wheel no longer leaks air.

In a cross joint (1) outwardly fitting a bearing cup (outer ring member 4) to each of four pieces of shafts 2b of a cross shaft member (2) via a cylindrical member (rolling member 3), race portions (2c, 4a) formed on a side of the cross shaft member (2) and on a side of the bearing cup (4) and a shoulder portion (2d) provided between respectives of neck portions of two of the shafts (2b) of the cross shaft member (2) contiguous to each other are subjected to roller burnishing.

A cadmium plating method for metal product surface treatment comprises steps of alkaline degreasing; first cleaning by hot water, and then cleaning by clear water with the temperature of 10 DEG C-30 DEG C; drying and baking in a drying oven at the temperature of 40 DEG C-80 DEG C; loosening and roller burnishing by a vibrating roller burnishing machine; second cleaning; first activating; third water washing; nickel preplating; fourth water washing; cadmium plating; fifth water washing; first bright dipping to remove surface oxide; sixth water washing; second cleaning by hot water; first spin-drying by a spin dryer for 5-10 minutes; hydrogen removal with the time of 6-8 hours; second activating; seventh water washing; second bright dipping; eighth water washing; passivating; ninth water washing, wherein water washing from the second time to the ninth time adopts clear water with the temperature of 10 DEG C-30 DEG C; third cleaning by hot water, wherein the temperature of hot water used by the first time, the second time and the third time is 50 DEG C-90 DEG C; second spin-drying for 5-10 minutes; ageing; inspecting; and packaging. The corrosion resistance test of a product is prolonged to be longer than 96 hours, and the quality is guaranteed.

The invention provides a polishing machine and polishing equipment, relates to the technical field of polishing equipment, and aims to the solve the technical problems that due to the fact that the rotation speed of the barrel of an existing barrel polishing machine is low, the polishing rate between an abrasive material in the barrel and a workpiece is low, and polishing is uneven. The polishingmachine comprises a barrel, an abrasive material and a support plate and is characterized in that the rotation direction of the barrel is opposite to the rotation direction of the support plate, and the rotation direction of a to-be-polished workpiece is identical with or opposite to the rotation direction of the support plate. The polishing equipment comprises a barrel, an abrasive material and two support plates and is characterized in that the two support plates are respectively arranged at the two opposite ends of the barrel; the rotation direction of the barrel is opposite to the rotationdirection of the support plates, and the rotation direction of a to-be-polished workpiece is identical with or opposite to the rotation direction of the support plates. The polishing machine and thepolishing equipment have the advantages that the workpiece can be polished by the polishing abrasive material in an omnibearing manner, the workpiece can be fast and evenly polished, machining time isreduced, and surface polishing degree is enhanced.

Provided is a bearing member for a dynamic pressure bearing device, which is excellent in wear resistance and which can exhibit a high dynamic pressure action. A shaft material (11) is rolled to form a recess (7) for causing the dynamic action of a lubricant in a radial bearing clearance (6). Then, a surface layer portion (14) of the recess (7) to be formed on the outer circumference (11a) of the shaft material (11) is rolled to form a first hardened layer (14a). At the same time, a surface layer portion (15) of a surrounding area (8) of the recess (7) is also rolled to form a first hardened layer (15a) at its partial area. After the recess (7) was rolled, that shaft material (11) is barreled. As a result, the outermost surface layer of the surface layer portion (15) is barreled to form a second hardened layer (15b). The hardness of the second hardened layer (15b) formed in the surrounding area (8) is higher by 50 Hv to 200 Hv than that of the first hardened layer (14a) formed in the recess (7).

The invention relates to the technical field of aluminum alloy wheels, and particularly relates to a manufacturing method of a long-service-life forged aluminum alloy wheel. The manufacturing method is characterized in that the surface of the wheel is strengthened by adding a wheel surface treatment process so as to obtain a forged aluminum alloy wheel with long service life, wear resistance, corrosion resistance and oxidation resistance. The manufacturing method comprises the operation steps of S1, bar heating; S2, forging, specifically, conducting single-step forging on the heated bar; S3, punching and flaring, specifically, expanding rim legs by a certain angle, and punching the center of a forging stock at the same time; S4, cleaning and cooling, specifically, putting the forging stockinto a cleaning line for cleaning; S5, spinning, specifically, placing the forging stock on a spinning lower die for compaction; S6, heat treatment, specifically, conducting heat treatment by means of solid solution, quenching and artificial aging; S7, rough turning; S8, surface roller burnishing, specifically, conducting full roller burnishing on the front surface, a back cavity and an outer side rim of the wheel; S9, drilling and window milling; S10, surface wiredrawing, specifically, conducting wiredrawing treatment is conducted on the front surface and the back cavity of the wheel; and S11, surface passivation, specifically, putting the wheel into a passivation solution for soaking, washing with pure water after passivation and then drying.

A pressure fluid reservoir for a traction-controlled vehicle brake system; a reservoir unit including a plurality of pressure fluid reservoirs; and a method for producing a pressure fluid reservoir are disclosed. The pressure fluid reservoir with its structural size unchanged, has a larger installation space for a restoring element cooperating with a reservoir piston and at the same time can be produced economically. To that end, as the reservoir piston, a component reshaped in non-metal-cutting fashion from a sheet-metal material is proposed, on whose circumference an encompassing receptacle for a piston seal is integrally formed, likewise in non-metal-cutting fashion. The reservoir piston can be produced by deep drawing; the receptacle for the piston seal can be produced by roller-burnishing. Both method steps can be performed economically in one combined operation.

The invention discloses an automatic discharging mechanism for roller burnishing of universal joint transmission shaft levers. The automatic discharging mechanism comprises a plurality of axial feeding wheels, radial turnover blocking rods and a plurality of lateral containing supports. The axial feeding wheels are collinearly arranged in the conveying direction of the universal joint transmission shaft levers. The lateral containing supports are collinearly arranged in the conveying direction of the universal joint transmission shaft levers and disposed on one side of the axial feeding wheels. The two ends of each radial turnover blocking rod include a discharging end and a lifting end respectively, and each radial turnover blocking rod further comprises a lifting section and a turnover shaft. Each lifting section is arranged in a gap between the corresponding adjacent axial feeding wheels. Each discharging end is arranged in a gap between the corresponding adjacent lateral containing supports. Each turnover shaft is located between the corresponding lifting section and the corresponding discharging end and is parallel to the axial direction of the universal joint transmission shaft levers. Lifting air cylinders are arranged at the bottoms of the lifting ends.

The invention mainly relates to a traditional Chinese medicine pill automatic production line in the field of pharmacy. A mixed material pilling, barrel polishing and drying device is mainly characterized by comprising a mixed medicine refining module, a pilling module, a polishing module, a pill selecting module and a microwave drying module, wherein the mixed medicine refining module, the pilling module, the polishing module, the pill selecting module and the microwave drying module are sequentially connected. According to the mixed material pilling, barrel polishing and drying device, the mixed medicine refining module comprises a double-paddle mixed medicine refining composite machine arranged on a module base; an outlet of the double-paddle mixed medicine refining composite machine is connected with a forming mold, and an elevator lifting device is arranged at the discharging end of the forming mold; a feeding chain plate is arranged on the elevator lifting device. The mixed material pilling, barrel polishing and drying device has the advantages that modularization of the traditional Chinese medicine pill automatic production line is achieved, and the problems that the field mounting and debugging time is long and special technicians are required for mounting and debugging are accordingly solved. Before each module leaves a factory, the modules are completely mounted and debugged, are conveyed to the field and are only required to be mounted in sequence, so that the time is greatly saved.