Crankshaft follow-up grinding online measuring instrument

Abstract

The invention discloses a crankshaft follow-up grinding online measuring instrument which comprises a measuring instrument base. A swing arm support is borne on the measuring instrument base in a sliding manner. A measuring swing arm is hinged to the swing arm support. A swing arm oil cylinder is connected between the top end of the oil cylinder support and the measuring swing arm. A center fixed gear is fixedly arranged at the stretching end of the measuring swing arm, a following swing frame is further mounted on the stretching end of the measuring swing arm, and a planet swing gear mounted at the output shaft end of a following swing motor is engaged with the center fixed gear. A measuring tool support is fixedly mounted on a measuring tool following swing arm, two measuring clamping blocks and a displacement sensor are mounted on the measuring tool support, the two measuring clamping blocks are located on two inclined face of a V-shaped base level correspondingly, the displacement sensor is located on the symmetric line of the V-shaped base level, and the inclined included angle alpha of the V-shaped base level is equal to 68 degrees to 72 degrees. The crankshaft follow-up grinding online measuring instrument can achieve real-time online measurement and is high in detecting sensitivity and machining precision.

Description

technical field [0001] The invention relates to an on-line measuring mechanism of a crankshaft grinder, in particular to a device for online detection of crankshaft cylindrical grinding surfaces such as crankshaft main journals by a crankshaft cylindrical grinder during the grinding process. Background technique [0002] The crankshaft is a crucial part of the engine, and the grinding accuracy of its journal and other active joints directly affects the running smoothness, vibration and noise of the reciprocating engine. Due to the particularity of the crankshaft structure, the traditional crankshaft grinding process adopts fixed grinding; through the control of the numerical control system, each special machine sequentially processes different processing surfaces such as the main journal, connecting rod journal, flywheel end surface and thrust surface of the crankshaft in different The grinding process is carried out on the special plane respectively. [0003] With the adva...

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to remove the crankshaft from the grinding machine for each measurement, and then install it on the measuring instrument. If the measurement result is unqualified, it is necessary to repeat the above process in reverse. During the loading and unloading process, due to installation errors, machine tool mechanical characteristics and other reasons, some additional errors will inevitably occur, which is extremely unfavorable for the crankshaft grinding process that requires high precision.

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