Piston outside diameter integrated measuring apparatus

Abstract

The invention has discloses a piston outer circle diameter comprehensive measuring instrument, which solves problems in the present metering equipment that the precision is not high, the stability is poor and so on, and has the advantages of simple structure, easy to operate, high measuring accuracy. The structure of the instrument is that: a soleplate is provided, two sides of one end of which are provided with a localization block respectively, and which locates and installs a fixed vertical plate, a surveying vertical plate which comprises a big surveying vertical plate and a small surveying vertical plate is arranged to be opposite to the fixed vertical plate, and the surveying vertical plate is connected with an adjuster; a surveying plane plate is arranged between the fixed vertical plate and the surveying vertical plate, gauge head installments are arranged on both the fixed vertical plate and the surveying vertical plate; a sensor frame is installed on the soleplate at one side of the surveying vertical plate, and a dial indicator and a percent meter are installed on the sensor frame; the dial director is sliding fitted with the small surveying vertical plate by the adjuster, that is the same as the percent meter with the big surveying vertical plate, so as to get surveying value.

Description

technical field [0001] The invention relates to a piston measuring device, in particular to a comprehensive measuring instrument for the outer circle diameter of a piston. Background technique [0002] Pistons under high temperature, high pressure, and high speed working conditions have four parts: the outer circle of the head, the outer circle of the skirt, the outer circle of the ring bank, and the outer circle of the bottom of the ring groove. The temperature of the piston head is high, and its outer diameter changes greatly. If the outer diameter of the head is out of tolerance, it will cause failures such as cylinder scuffing, knocking, abnormal noise, and loud engine noise. The piston skirt plays a guiding role in the reciprocating movement of the piston in the cylinder. The diameter of the outer circle of the piston determines the side pressure of the piston and maintains a small and safe fit gap with the cylinder liner. The outer circle of the ring bank plays an imp...

AI Technical Summary

Problems solved by technology

The current measurement device has defects: the device slides through the upper and lower V-shaped grooves and steel balls, and the measurement system is poor in linearity and stability; only one instrument can be installed, and the measurement accuracy is low if the dial indicator is installed, and it cannot be realized if the dial indicator is installed. Multi-point (generally six measurement positions) comprehensive measurement reduces inspection efficiency

Images