Numerical-control machine tool for processing spiral bevel gear

Abstract

The invention provides a numerical-control machine tool for processing spiral bevel gear, which comprises a machine tool body, a workpiece box, a turn table of the workpiece box, a tool box and the supporting post of the tool box, wherein, the machine tool body is T-shaped, and two groups of rails X and Z which are perpendicular to each other are formed on the machine tool body; the turn table of the workpiece box is mounted on the rail X; the supporting post of the tool box is mounted on the rail Z; the workpiece box is mounted on the turn table thereof via turntable bearings; the supporting post of the tool box has a gantry structure, the sliding rail Y of the tool box is formed on one side of the gantry, and two traction screw rods are arranged in the gantry; and screw holes are formed on the tool box, the tool box is rotationally mounted on the traction screw rods via the screw holes, and one end of the tool box is stuck to the rail Y via slideway. The invention has the following advantages: the structure is reasonable, the operation and the application are convenient, the workpiece box has a small turning radius and large turning angle, the machine tool has small volume and stable operation, and the tool has high positioning accuracy, so that the invention is applicable to industrialized production, in particular to the numerical-control processing of large-size spiral bevel gear.

Description

technical field [0001] The invention discloses a numerical control spiral bevel gear processing machine tool, which belongs to the field of numerical control machine tool processing. Background technique [0002] CNC spiral bevel gear processing machine tools are widely used in the field of spiral bevel gear processing because of their high cutting efficiency and high processing accuracy. The traditional CNC spiral bevel gear processing machine tool has the following problems due to the defects in the overall structural design: see the attached figure 1 , the traditional CNC spiral bevel gear processing machine tool, the center of gravity of the workpiece box does not coincide with the center of rotation, forming an offset structure, the radius of rotation is large, and a large centrifugal force is generated when the B-axis rotates, which affects the stability of the workpiece box movement In addition, due to the large radius of gyration, the size of the bed and slide table...

AI Technical Summary

Problems solved by technology

The traditional CNC spiral bevel gear processing machine tool has the following problems due to the defects in the overall structural design: see the attached figure 1 , the traditional CNC spiral bevel gear processing machine tool, the center of gravity of the workpiece box does not coincide with the center of rotation, forming an offset structure, the radius of rotation is large, and a large centrifugal force is generated when the B-axis rotates, which affects the stability of the workpiece box movement In addition, due to the large radius of gyration, the size of the bed and slide table supporting the workpiece box is large, and the span of the guide rail moving in the Z direction is large, which makes the rigidity of the support of the workpiece box higher and increases the manufacturing cost of the machine tool; at the same time, The CNC spiral bevel gear processing machine tool with a traditional structure adopts a structure in which the center of gravity of the workpiece box is offset from the center of rotation, so that the rotation angle of the workpiece box is small, and the rotation angle is only between -5 degrees and 90 degrees. When the rotation angle is At -5 degrees, the workpiece box and the sliding table below are likely to interfere with the relevant parts of the tool, which affects the normal operation and operation of the machine tool

See attached figure 2 , the traditional CNC spiral bevel gear processing machine tool, the supporting column of the tool box is a single-arm type, the tool box moves up and down in a cantilever shape on one side of the column, and the center of gravity is in an offset state. When the tool box moves, its gravity will generate a subversive moment , affecting the stability and positioning accuracy of the up and down movement of the tool box

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