Detection tool for detecting cracking position of connecting rod

Abstract

The invention provides a detection tool for detecting a cracking position of a connecting rod. The detection tool comprises a base, and a first automatic core expansion mechanism, a second automatic core expansion mechanism, a magnifying lens, a pointer and a dial which are connected to the base, the first automatic core expansion mechanism and the second automatic core expansion mechanism are arranged at an interval in a first direction; one connecting end of the magnifying lens can be connected to one side of the first automatic core expansion mechanism through a supporting shaft in a manner of rotating around the supporting shaft; the pointer and the dial are arranged on the other side of the first automatic core expansion mechanism; and the supporting shaft, the pointer and the dial are sequentially arranged in the second direction perpendicular to the first direction. The pointer is rotatably connected to the base. The detection tool for detecting the cracking position of the connecting rod is simple in structure, easy to manufacture and maintain, good in reliability, convenient to use and operate, high in detection precision, high in popularization value and suitable for being used in a production workshop.

Description

technical field [0001] The invention relates to the field of detection tools, in particular to a detection tool for detecting the cracking position of a connecting rod. Background technique [0002] The connecting rod is an important power transmission part in the engine, which connects the piston and the crankshaft, and converts the heat energy in the combustion chamber into the power of the engine. The large hole of the connecting rod of the EA888 engine is separated by laser fracture after boring, and then assembled with the crankshaft by bolt tightening. The laser fracture process has the characteristics of high production efficiency and is widely applicable to the production of various internal combustion engine connecting rods. The laser cutting position of the connecting rod is the initial position of the fracture, the flatness and position of the fracture plane, the tightening torque of the connecting bolt of the large hole of the connecting rod, the geometric dimen...

AI Technical Summary

Problems solved by technology

Therefore, the original inspection tool can only qualitatively judge whether the workpiece is qualified, but cannot quantitatively analyze the specific value of the error value

[0003] In the prior art, there are already the following solutions to solve the problem that the specific value of the error value cannot be quantitatively analyzed:

When using, the operator also needs to choose different inspection tools according to the diameter of the large hole and small hole of the measuring connecting rod, which is labor intensive.

Images