Horizontal propeller five-axis linkage numerical control machining tool and machining method

Abstract

The invention discloses a horizontal propeller five-axis linkage numerical control machining tool and a machining method. A vertical propeller is coaxially connected to a part right above a rotary working table. A U-axis transmission mechanism, a C-axis rotation mechanism and a vertical Z-axis transmission mechanism are arranged beside the propeller. The lower end of the Z-axis transmission mechanism is coaxially connected with the C-axis rotation mechanism capable of driving the Z-axis transmission mechanism to rotate. The U-axis transmission mechanism, which is horizontally arranged in the diameter direction of the propeller, is connected to the bottom of the C-axis rotation mechanism. The U-axis transmission mechanism can drive the C-axis rotation mechanism and the Z-axis transmission mechanism to move to and fro along a center shaft of the U-axis transmission mechanism. The upper section of the Z-axis transmission mechanism is connected with a horizontal X-axis transmission mechanism and a balancing mechanism. The inner end of the X-axis transmission mechanism is coaxially connected with an A / B direct-drive swinging force head. The space layout of the tool is greatly reduced on the whole, the front and back surfaces of the propeller are machined after one-time clamping of parts, and the machining efficiency is improved.

Description

technical field [0001] The invention relates to a numerically controlled processing machine tool for manufacturing propellers, which belongs to the field of mechanical processing equipment, and is particularly suitable for processing large marine propellers with an outer diameter greater than 5m and a minimum blade distance greater than 0.4m. Background technique [0002] The marine propeller is an essential propeller part of the ship, and its manufacturing precision and surface quality will directly affect the output, efficiency, operation stability, unit life and manufacturing cost of the propulsion system. Since the propeller is a complex free-form surface part, its design and manufacture are difficult. The traditional propeller processing method is completed by ordinary milling machine and a large number of manual grinding. This method is time-consuming and labor-intensive, and the accuracy is difficult to guarantee. At present, the following methods are basically used ...

AI Technical Summary

Problems solved by technology

[0003] Machine tools specially customized for large-scale marine propeller processing are mostly gantry-type vertical machining centers. This type of vertical machining center has a large processing area and high precision. The maximum processing diameter of the machine tool can reach 8.5 meters, and the maximum load-bearing capacity can reach 160 tons. 0.025 mm, but the machining center itself is bulky and difficult to manufacture, and it can only process the upper surface of the propeller, and cannot complete the front and back processing of the propeller in one clamping

[0004] Therefore, using the existing method to process the propeller requires multiple clamping to complete the processing of the entire propeller. In addition, the root of the propeller blade is mostly a curved surface shape with overlapping areas. The interference and collision problems between the machine tool, the tool and the propeller during the machining process have always been cannot be fully resolved

However, the propeller with a larger diameter is difficult to turn over and clamp, and takes more time. Re-clamping during processing will adversely affect the machining accuracy of the propeller.

However, the large size of the vertical machining center and the large stroke of the machine tool (generally 1.2 to 1.3 times the diameter of the propeller) reduce the response speed of the machine tool

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