Drag chain used for ultra-long three-coordinate measuring machine

Abstract

The invention discloses a drag chain used for an ultra-long three-coordinate measuring machine. The drag chain comprises a wiring duct and a drag chain assembly thereof, wherein the U-shaped axis plane of the drag chain assembly is parallel to a horizontal plane, the drag chain assembly is provided with through holes at an upper hinge pin position and a lower hinge pin position on each chain link unit every other at least 0.5m, a lifting pin and an upper bearing and a top tray of the lifting pin are inserted into each upper through hole, an idler wheel mechanism used for supporting the drag chain assembly is inserted into each lower through hole, each idler wheel mechanism comprises a bottom pin inserted into the lower through hole, a screw vertical to each bottom pin is horizontally placed on the lower half part of each bottom pin in an inserted manner, each screw is also sleeved with a lower bearing with the end face being parallel to the inner wall of the wiring duct, and the radial center plane of each lower bearing arranged on the screw of the corresponding bottom pin is inclined to the center axis direction of the wiring duct. The drag chain has a little influence on the precision of the ultra-long measuring machine, is simple in structure, low in cost and high in reliability and can be widely used for a cable servo system of the ultra-long three-coordinate measuring machine or a servo system of an ultra-large type machine tool, and the drag chain assembly is very small in droop magnitude and deflection magnitude, and is in oriented operation with low frictional resistance.

Description

technical field [0001] The invention relates to a tow chain used for a three-coordinate measuring machine, in particular to a tow chain used for an ultra-long three-coordinate measuring machine (travel range of tens of meters). Background technique [0002] The cables and gas pipelines of the coordinate measuring machine have a large number and specifications, and are usually gathered in the inner cavity of the drag chain. One connector reciprocates with the moving axis of the coordinate measuring machine, and the other connector is fixed on the line groove wall , which contains a U-shaped axis plane perpendicular to the horizontal plane. The transmission system of the three-coordinate measuring machine has a low power setting, generally 100-400W, but requires high operating accuracy, precise positioning, small resistance of the servo system, small resistance changes, and low noise. With the lengthening of the moving axis stroke of the three-coordinate measuring machine, th...

AI Technical Summary

Problems solved by technology

Foreign famous brands use multiple symmetrical conical wheels to support the towline. The right-angled side of the R side of the towline is in contact with the elastic point of the conical wheel slope, and the force is unreasonable. The accuracy of the coordinate measuring machine is disturbed, and the random error software is difficult to correct

[0003] The support and guide device of the tow chain provided by domestic tow chain manufacturers only solves the support and guide for half of the tow chain travel, and does not provide support and guide devices for the other half of the travel, which can only solve the three-coordinate measuring machine with a range of several meters. servo system

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