Servo autotracking support for bent axle grinding

Abstract

The invention discloses a servo automatic tracing support device for crank shaft grinding process, a box body (4) is provided with a ball-bearing thread bar (17) and a servo motor (1), the ball-bearing thread bar (17) is provided with a driving connection rod (7), an upper driving rod (5) and a lower driving rod (16) fixed with the driving connection rod (7) are slidingly arranged on the box body (4), an upper support arm (9) with a first reset spring (10) is slidingly arranged on the box body (4), one end of the upper support arm (9) is driven with the upper driving rod (5) correspondingly while the other end is provided with an upper support alloy (11), the box body (4) also is pin-jointed with a lower support arm (13) with a second reset spring (8), one end of the lower support arm (13) is driven with the lower driving rod (16) correspondingly while the other end is provided with a lower support alloy (12), and the upper support alloy (11) and the lower support alloy (12) are distributed from 100 DEG C to 120 DEG C; the invention can conduct the automatic tracing and centering grinding process where the crank shaft grinding process is synchronized with the sand wheel feeding process, and effectively improve the accuracy and stability of crank shaft grinding process, and improves the automatic control degree of the machine tool, and increase the overall taste and value of the machine tool.

Description

technical field [0001] The invention relates to a support device, in particular to a servo automatic tracking support device for crankshaft grinding. Background technique [0002] The crankshaft is composed of the main journal and the eccentric connecting rod journal alternately. It is a typical spring-type part, and the grinding rigidity is poor. Due to the eccentric structure of the crankshaft, it is not suitable to use a fixed and adjustable steady rest, especially for the grinding of the connecting rod neck. It adopts the automatic tracking tool rest support device. On the traditional crankshaft grinding machine, the main journal is generally divided into two processes. First, the intermediate journal is processed, and then positioned. The fixed and adjustable center frame is used to grind the other journals. The connecting rod journal generally does not use the intermediate support. The grinding accuracy is low and the efficiency is very slow, which cannot meet the dev...

AI Technical Summary

Problems solved by technology

[0002] The crankshaft is composed of the main journal and the eccentric connecting rod journal alternately. It is a typical spring-type part, and the grinding rigidity is poor. Due to the eccentric structure of the crankshaft, it is not suitable to use a fixed and adjustable steady rest, especially for the grinding of the connecting rod neck. Adopt automatic tracking type support device with tool rest

On the traditional crankshaft grinding machine, the main journal is generally divided into two processes. First, the intermediate journal is processed, and then it is positioned. The fixed and adjustable center frame is used to grind other journals. The connecting rod journal generally does not use the intermediate support. The grinding accuracy is low and the efficiency is very slow, which cannot meet the development requirements of the automobile industry. Imported machine tools generally use two support devices, hydraulic automatic tracking and electronic tracking, to solve this problem, but the import price is expensive, and a domestically designed one can be used for crankshafts. Grinding hydraulic automatic tracking steady frame, but its support rigidity and working stability are affected by temperature and hydraulic pulsation, and adjustment is difficult

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