Connecting shaft assembly type bull gear involute sample plate

Abstract

The invention belongs to the technical field of precision gear machining and testing and relates to a connecting shaft assembly type bull gear involute sample plate which is an entity reference used for precision traceability and measurement transmission of a bull gear involute. The involute sample plate structurally comprises a bull gear involute sample plate strip, a mandrel, a base plate, a counterweight shaft, an adjustable counterweight ring, a counterweight adjusting set screw, a base plate connecting screw, a sample plate connecting screw and an eccentric dense ball shaft sleeve. According to the connecting shaft assembly type bull gear involute sample plate, the sample plate structure and the unfolding length both meet the basic requirements of the first-level precision in the gear involute sample plate national standard GB / T 6467-2010, the connecting shaft assembly type bull gear involute sample plate has advantages of being long in unfolding length, compact in structure, adjustable in mass center, uniform in standard, compact in structure and portable, light-weight design is adopted, installation and carrying can be conducted manually by a single person, and the sample plate is suitable for the structural design of the bull gear involute sample plate with the base circle diameter larger than 500 mm.

Description

technical field [0001] The invention belongs to the technical field of precision gear processing and testing, and relates to a shaft-connected assembly type large gear involute model, which is used as a physical reference for large gear involute precision traceability and measurement transmission. Background technique [0002] The involute profile is currently the most widely used and most mature tooth profile. Gears with a large involute profile generally refer to gears with an addendum circle diameter greater than 500 mm, and are widely used in wind power, nuclear power, rubber and plastic machinery, large construction machinery, marine resource exploration equipment, and large ships. High-end equipment has higher and higher requirements on the machining accuracy of large gears, so the requirements for the accuracy of instruments for measuring large gears are also higher and higher. The gear involute template is a standard measuring instrument for calibrating various invo...

AI Technical Summary

Problems solved by technology

Invention patent (CN 201610847011.2) discloses a large gear involute template structure. The large gear involute template is integrated with an involute template block and a fan-shaped base circle block, but there is no direct base circle center. The base circle block There is a certain error in the center of the base circle determined by the arc above, which reduces the performance of this type of large gear involute model, and there is no such type of gear involute model product on the market.

The invention patent (CN 201711393983.X) discloses a gear involute template with a self-installation datum equal common normal. Gear Involute Template

In addition, there is no relevant literature on gear involute models with addendum circles greater than 500 mm and meeting the national standards for gear involute models in my country's national standards for gear involutes with grades 1 and 2 precision.

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