Shedding cam vibration measuring device

Abstract

An oscillator measurement device of open cam including the assemble table, the pivot connected to the open cam in the assemble table, the servo electric machine in the assemble table which the output axis is connected to the open cam. The sliding groove in the assemble table is installed with the sliding pin roll which is fixed with the roller follower. The axes line is parallel with it of the open cam rotating shaft. The sliding groove is set with the spring which provides the press for the pin roll to make the outside of the roller follower compress with the open cam surface; the accelerometer is in the pin roll. The roller follower can change with the radial of the open cam to drive the pin roll slide in the groove, so the accelerometer can probe the acceleration change.

Description

technical field [0001] The invention relates to a device for measuring the vibration of an opening cam of an opening mechanism on an air-jet loom. Background technique [0002] In the prior art, the shedding mechanism is the mechanical structure with the worst working conditions on the air-jet loom. The primary modal frequency of the shedding system is lower than 10 Hz, while the operating frequency of the air-jet loom is about 750 rpm. The operation of the shedding mechanism The ratio of the frequency to the modal frequency of the system is about 0.5-0.8. The cam shedding mechanism of the air-jet loom is a high-speed cam follower mechanism, and the shedding cam is the motion source of the shedding mechanism. If the shedding cam is not well-made, vibration will be generated. The vibration of the shedding cam is transmitted to the heald frame, and the warp of the air-jet loom End breakage mainly occurs in the vicinity of the heald frame, and the heald...

AI Technical Summary

Problems solved by technology

The radius accuracy of the shed cam is 0.005-0.02mm. At present, there is still a lack of means to measure the radius of the high-precision shed cam in the field of air-jet looms. Therefore, it is impossible to accurately judge whether the quality of the shed cam is qualified or not, and the size of the vibration generated by the shed cam. It can be used as a standard for measuring the manufacturing accuracy of the shedding cam, but there is no measuring instrument for measuring the vibration of the shedding cam in the field of air-jet looms, so it is impossible to determine whether the fault source of the shedding mechanism is the shedding cam, and it is difficult to find out the vibration s reason

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