5 results about "Tangential contact" patented technology

This invention discloses a high-rigidity double-row cylindrical roller backing bearing for multi-roll mills. It relates to a bearing field belonging to the technical field of green manufacturing and precision rolling equipment, and includes a thick-walled outer ring, an inner ring, double-row cylindrical rollers, and a center flange. The outer raceway of the thick-walled outer ring has an asymmetric unloading micro-zone along its axial direction away from the center flange. The center flange has inwardly recessed chamfered pressure-relieving grooves at the junction of its two guide surfaces and the bottom surface of the inner ring, creating an axially elastic suspended structure for the center flange. The inner end face of the cylindrical rollers near the center flange is a slightly convex spherical surface, and the two guide surfaces of the center flange are inclined conical surfaces radiating outwards, with tangential contact between them. This invention compensates for the bending of the outer ring under load through the asymmetric unloading micro-zone, eliminating edge stress concentration; and absorbs axial compressive force through the suspended center flange and the combination of spherical and conical surfaces, achieving adaptive load distribution and flexible pressure relief, significantly improving the bearing's service life under extreme off-center load conditions.

A measuring fixture for the sealing surface of a wedge-type single-gate valve body, belonging to the field of valve processing technology, addresses the difficulty in measuring the distance between the sealing surfaces on both sides of a wedge-type single-gate valve. It includes a reference body and a main shaft. The reference body is connected to the valve body, with its inner bore axis directly above the reference body's axis. The main shaft is coaxial with the inner bore of the reference body and can move left and right. A measuring rod is locked to the main shaft. By measuring the tangential contact between the measuring rod and the two sealing surfaces, the horizontal distance between the center of the sealing surface and the axis of the measuring rod is calculated. Furthermore, by measuring the change in distance of the measuring rod when it is tangential to the two sealing surfaces, the center-to-center distance between the two sealing surfaces can be accurately obtained. This invention allows for efficient and accurate measurement of the distance between the sealing surfaces of a single-gate valve body.

This invention discloses a machining fixture and method for a ring-shaped thin-walled part at the head of a flame tube, belonging to the field of flame tube part machining technology. The invention sets a positioning unit and a pressing unit on the base. The pressing unit includes a support block, a top block, and a clamping component. The support block has an inclined mounting surface. Through the cooperation of the inclined mounting surface and the top block, the pressure applied by the clamping component to the top block towards the base is divided into radial and axial components. The point of application is located in the tangential contact area of ​​the outer circular surface, without directly pressing the end face of the part. Errors in the flatness of the end face only cause local suspension of the contact line, without introducing a forced correction bending load. This fundamentally cuts off the deformation transmission chain of "poor end face flatness - forced flattening - bending moment - machining rebound," avoiding axial warping and springback caused by end face clamping. After machining, the roundness, cylindricity, and end face runout accuracy of the part are significantly improved.