Compact porous positioning tool

Abstract

The invention relates to the field of machinery, and discloses a compact multi-hole positioning tool which comprises a plurality of positioning pin shafts, the outer diameter of each positioning pin shaft is matched with an inner hole of a conical cylinder structure of an upper-layer workpiece, and the plurality of positioning pin shafts are jointly connected to a positioning mounting ring. The axial length of the positioning pin shaft is not less than the stacking height of the upper-layer workpiece and the lower-layer workpiece; the shaft hole penetrates through the positioning pin shaft in the axis direction of the positioning pin shaft, the inner diameter of the shaft hole is matched with the diameter of an anode column arranged on the workpiece on the lowermost layer, and the height of the anode column is not lower than the stacking height of all the workpieces. According to the assembly precision of the large-scale structural member, a proper fit clearance is designed for the positioning tool, and the requirement for the micron-scale or millimeter-scale coaxiality assembly precision of the large-scale structural member can be met.

Description

technical field [0001] The invention relates to the field of machinery, in particular to a compact porous positioning tool. Background technique [0002] A large-scale magnetically insulated transmission line is composed of 5 workpieces, each of which is a stainless steel thin-walled cone structure. There are inner holes running through the stainless steel thin-walled cone up and down. The bottom diameter of each cone is about 3 meters, and the height (0.5 ~1.8) meters, and each workpiece weighs about 1 ton. The lowermost workpiece has an anode column connected by threads in the vertical direction. The anode column passes through the inner hole of the second layer of workpieces, the third The inner hole of the workpiece on the fourth layer, the inner hole of the workpiece on the fourth layer, and the inner hole of the workpiece on the fifth layer. Finally, the anode column and the workpiece on the fifth layer are fixed by screwing the top of the workpiece on the fifth layer ...

AI Technical Summary

Problems solved by technology

Due to the large size of the workpiece, personnel cannot reach the central area to confirm the installation accuracy in time. After the first workpiece is installed in place, with the help of the driving guide, the second workpiece is vertically interspersed with the first workpiece. Complete the trial assembly of the second workpiece under the premise of taking the spreader, and then use a single sleeve to insert several "column-hole" structures between the upper and lower workpieces one by one, and perform repeated comparisons, adjustments, and comparisons , to determine the coaxiality of the upper and lower workpieces and the overall assembly accuracy, the positioning sleeve will be used twice in the entire assembly process, this method is time-consuming, labor-intensive, and the positioning accuracy is not ideal

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