Adjusting device for free end of crankshaft and adjusting method thereof

Abstract

The invention relates to the technical field of adjusting for a free end of a crankshaft, in particular to an adjusting device for the free end of the crankshaft and an adjusting method thereof. According to the adjusting device for the free end of the crankshaft, a baffle disc is arranged at the inner side of a drive disc body, a central hole is formed in the outer side of the baffle disc, the drive disc body is uniformly provided with four cover boards, the cover boards are fixed on the drive disc body through fastening bolts, a cavity is arranged in the drive disc body, a pressure head is arranged in the cavity and connected with a compression bolt, a first guide bolt is arranged between the drive disc body and the pressure head, and a second guide bolt is arranged between the pressure head and the compression bolt. When using, the adjusting device for the free end of the crankshaft and the adjusting method thereof can quickly adjust a shaft journal of the free end to enable the circle center position of the shaft journal to be consistent with the circle center position of the central hole, and after grinding the crankshaft, the jump amount of the shaft journal of the free end is located in a use requirement.

Description

technical field [0001] The invention relates to the technical field of crankshaft free end calibration, in particular to a crankshaft free end calibration device and a calibration method thereof. Background technique [0002] When overhauling the crankshaft, it is required to grind all the main journals (such as Figure 5 1-9 in gear), but the free end journal is not allowed to be ground (see Figure 5 right end). The design requires that the overhauled crankshaft be based on the 1st and 9th gear main journals at both ends, and the radial runout of the free end journal must be within 0.03mm when measuring the 5th main journal in the middle with a floating support. In order to ensure the runout of the free end journal, generally before grinding, the center hole is repaired on the lathe based on the outer circle of the free end journal, and then the 9th main journal is ground on the right end of the grinding machine using the center hole positioning method. In theory, the run...

AI Technical Summary

Problems solved by technology

However, when the center hole is repaired on the lathe, machine tool errors and human adjustment errors are difficult to avoid, and the center hole and the free end journal are difficult to be concentric, so it is difficult to ensure the runout of the free end journal after grinding.

Images