Gantry machining lathe

Abstract

The invention discloses a gantry machining lathe. The gantry machining lathe comprises a lathe table and a worktable capable of sliding front and back on the lathe table, wherein stand pillars are respectively arranged at two sides of the rear end of the lathe table, a vertical motion part is movably arranged on the stand pillars, a left-right motion part capable of moving left and right is arranged on the vertical motion part, a machining head capable of swinging front and back is arranged at the lower end of the left-right motion part and comprises a main shaft component and a cutter driven by the main shaft component to rotate, the main shaft component comprises a main shaft located inside an outer shell, a first bearing component is arranged between the front end of the main shaft and the outer shell, a second bearing component is arranged between the rear end of the main shaft and the outer shell, and a lubricating liquid supply part supplies lubricating oil through a lubrication liquid pipeline. The gantry machining lathe is simple in structure, is good in lubricating effect, avoids abnormal temperature rise of the main shaft, provides centering auxiliary performance, and guarantees the smoothness and accuracy of machining.

Description

technical field [0001] The invention relates to the technical field of processing machine tools, in particular to a high-precision, leak-proof gantry processing machine tool. Background technique [0002] Commonly used machine tools are equipped with a main shaft that fixedly supports the tool for rotation, and various cutting processes can be performed by installing various tools on the tool holder at the front end of the main shaft of the machine tool in the axial direction. [0003] In the existing machine tools, the tool holder has a movable clamping unit for releasably clamping the tool shank and an action unit for moving the movable clamping unit between the shank release position and the shank clamping position, and is housed in The axial direction through hole of the main shaft. The operating unit of the tool holding mechanism is driven by a drive mechanism (for example, a hydraulic cylinder mechanism) outside the spindle head device, and moves the movable clamping ...

AI Technical Summary

Problems solved by technology

[0005] In such a bearing, the discharge performance of the lubricant is likely to deteriorate, causing abnormal temperature rise of the cylindrical roller bearing; when performing grease lubrication, after the grease is sealed into the bearing, in order to make the sealed grease evenly inside the bearing, The so-called test run is indispensable in order to spread the remaining grease along the periphery of the bearing.

Therefore, the discharge performance of the lubricant tends to deteriorate, and the trial run takes a long time

Moreover, under high temperature conditions, the neutrality of the bearing becomes worse, which reduces the machining accuracy

[0006] Therefore, the problem to be solved in the prior art is that in the case of too much lubricant, the rolling bearing is prone to abnormal temperature rise, and maintains good centering during high-speed motion

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