High strength chain and scraper are often used to transport ore in mines, while link link is widely used to connect high strength link of mining equipment. In mining production, the use of scraper conveyor in the working face shows that the breakage of the link is one of the main factors affecting the operation efficiency of the conveying machinery. Open link is a widely used form of link, which has the characteristics of high strength and convenient use. Due to the complex shape of the connecting ring and the use of the connection method of body assembly cross pin, the blank needs to be machined after the forging. Because the shape of the open connecting ring is irregular, it is difficult to clamp, which improves the processing difficulty.

The utility model relates to an opening type connecting ring machining fixture, which comprises a machine platform and an opening type connecting ring, which is characterized in that: a fixture base is fixed on the top of the machine platform through a plurality of locking bolts, the center of the fixture base is provided with a fixture middle baffle, the left and right sides of the fixture middle baffle are mirrored with two opening type connecting rings symmetrically arranged; the opening type connecting ring The C-ring is connected with an open-ended ring with two cuboids through an arc transition, the end of the cuboid of the open-ended connecting ring is locked between a pressing plate and the fixture base through a pressing plate bolt, and the pressing plate bolt of the arc transition connection of the open-ended connecting ring is locked between the second pressing plate and the fixture base.

The middle baffle plate of the fixture is set as a cross shape, the cross shape includes a long baffle plate and a short baffle plate, the length La of the long baffle plate is larger than the distance LB between the two cuboids of the open connecting ring, the height ha of the short baffle plate is smaller than the height Hb of the long baffle plate and smaller than the height HC of the two cuboids of the open connecting ring.