Checking fixture for detecting distance from thrust surface to pin hole of cylinder

Abstract

The invention discloses a checking fixture for detecting distance from a thrust surface to a pin hole of a cylinder. The checking fixture comprises a locating assembly connected with the cylinder and a measuring assembly connected with the locating assembly and used for detection, wherein the locating assembly comprises a first locating block, a locating pin and a second locating block, the first locating block is matched with the end surface of the cylinder and arranged in the length direction of the cylinder, the locating pin is matched with a process pin hole of the cylinder and locates the first locating block on the cylinder, and the second locating block is fixed at the side part of the first locating block and extends vertically outwards; the measuring assembly comprises a measuring gauge holder which is connected with the second locating block and can reciprocate in the extended axial direction of the second locating block, and the checking fixture further comprises a gauge clamp detachably mounted on the measuring gauge holder and a dial gauge fixed at the extended tail end of the gauge clamp. The checking fixture is simple in structure, convenient to manufacture, high in detection accuracy and easy to operate; the distance from the thrust surface to the pin hole can be detected rapidly, and the work efficiency is effectively improved.

Description

technical field [0001] The invention relates to the technical field of detection of engine parts, more specifically, it relates to a detection tool for detecting the distance from the thrust surface of a cylinder block to a pin hole. Background technique [0002] The thrust surface is an important processing plane on the engine cylinder block, which has high requirements on its parallelism, roughness, and size. Among them, as for the distance from the thrust surface to the process pin hole, it is difficult to directly measure the distance between the two because the distance between the two is relatively long and there are other parts blocking the middle. The existing detection methods include indirect measurement and three-coordinate measurement. However, the indirect measurement method needs to measure the dimensions of multiple parts, and then calculate the distance from the thrust surface to the process pin hole. This method measures The speed is slow, and the measureme...

AI Technical Summary

Problems solved by technology

Among them, as for the distance from the thrust surface to the process pin hole, it is difficult to directly measure the distance between the two because the distance between the two is relatively long and there are other parts in the middle.

The existing detection methods include indirect measurement and three-coordinate measurement. However, the indirect measurement method needs to measure the dimensions of multiple parts, and then calculate the distance from the thrust surface to the process pin hole. This method measures The speed is slow, and the measurement error is large; while the three-coordinate measurement needs to move the cylinder block during the measurement process, which is labor-intensive and affects the continuity of the processing. The overall speed is relatively slow. Therefore, in the production process of the engine assembly line, What is needed are methods and tools that enable rapid detection at the production site

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