A profile measuring device and method for multi-cone deep hole parts

Abstract

The invention discloses a profile measuring device and method for multi-cone section deep hole parts. The measuring device includes a cavity, an axial feed mechanism, an axial detection mechanism, an aperture measurement mechanism and a driving motor. The invention adopts a cylindrical integrated measuring structure, and the key structures are stored in the cavity formed by the left and right end covers and the casing. The overall structure of the measuring device is simple and compact, and the volume is small. The present invention adopts the mode that the lead screw nut auxiliary driving device cooperates with the spline shaft driving device, the whole structure has good rigidity and the driving stroke is large. The axial detection device is used to record and feed back the change of the axial position in time, and the axial feeding accuracy is high. The aperture measurement mechanism adopted in the present invention has two degrees of freedom in the axial direction and in the circumferential direction, combined with the axial movement mechanism and the axial detection mechanism, the position adjustment of the primary measurement device is realized, and each cone section of the deep hole part is obtained. The taper and the roundness, diameter and other geometric quantities of each depth in the aperture.

Description

technical field [0001] The invention relates to a measuring device for deep hole parts, in particular to a profile measuring device and method for multi-cone deep hole parts. Background technique [0002] At present, deep-hole cylindrical parts are widely used in the field of machinery manufacturing, especially in precision manufacturing fields such as aerospace. However, the working space of deep-hole parts is small and the internal cavity is irregular, so the measurement of multi-cone deep-hole parts becomes very difficult, which makes the detection and trimming of multi-cone deep-hole parts more difficult, thus It is difficult to achieve the required accuracy of pre-designed drawings. [0003] The existing multi-cone deep hole parts have a cylindrical robot measuring device, which has multiple walking wheels in the circumferential direction. During the measurement process, the whole device needs to fully enter the inside of the deep hole parts. The parts are not applica...

AI Technical Summary

Problems solved by technology

However, the working space of deep-hole parts is small and the internal cavity is irregular, so the measurement of multi-cone deep-hole parts becomes very difficult, which makes the detection and trimming of multi-cone deep-hole parts more difficult, thus Difficult to achieve the required accuracy of pre-designed drawings

[0003] The existing multi-cone deep hole parts have a cylindrical robot measuring device, which has multiple walking wheels in the circumferential direction. During the measurement process, the whole device needs to fully enter the inside of the deep hole parts. Parts are not applicable, stuck in the inner cavity of deep hole parts and difficult to remove

In addition, artificial auxiliary measuring devices are used to penetrate into different positions of the inner cavity of the part, and combined with the data fed back by the probe for multiple adjustments to perform auxiliary measurements. This type of measuring equipment relies on manual positioning to find points, and the process of setting up and debugging is difficult.

It can be seen that the technology at this stage has problems such as difficulty in measuring the taper of multi-cone deep hole parts, poor measurement accuracy, and low measurement efficiency.

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