Manufacturing method of valve positioning device of high-precision valve grinder

Technical characteristics:

1. A valve positioning device of a high-precision valve grinder, comprising a positioning drive cylinder (3), characterized in that: a positioning sleeve (2) is installed on the extension end of the piston rod of the positioning drive cylinder (3), and the positioning sleeve (2) The front end is provided with a ball head supporting hole (9), and a positioning piece (1) is inserted into the ball supporting hole (9), and the positioning piece (1) is movably inserted through the ball head (8) at the rear end In the ball bearing hole (9), a positioning disk (6) is provided at the front end of the positioning member (1), and a positioning protrusion (5) is provided at the outer end of the positioning disk (6), and the positioning protrusions (5) are uniformly distributed along the circumferential direction On the outer end surface of the positioning plate (6), an o-shaped elastic ring (7) is installed on the hole wall of the ball bearing hole (9), and the ball head (8) of the positioning member (1) is located in the o-shaped Inside the elastic ring (7), the outer surface of the ball head (8) is attached to the o-shaped elastic ring (7). 2. The valve positioning device of a high-precision valve grinder according to claim 1, characterized in that: a ball head seat (12) is provided at the front end of the positioning sleeve (2), and the ball head supporting hole (9) is provided in On the ball seat (12). 3. The valve positioning device of a high-precision valve grinder according to claim 1 or 2, characterized in that: the ball bearing hole (9) comprises a cylindrical hole section (10) and a cone located at the bottom of the cylindrical hole section (10) Hole section (11). The valve positioning device of a high-precision valve grinder according to claim 3, wherein the o-shaped elastic ring (7) is installed on the cylindrical hole section (10) of the ball bearing hole (9). 5. The valve positioning device of a high-precision valve grinder according to claim 1, wherein the positioning driving cylinder (3) is an adjustable stroke cylinder. The valve positioning device of a high-precision valve grinder according to claim 1, characterized in that: three to five positioning protrusions (5) are provided at the outer end of the positioning disk (6).

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