Two-axis Y-shaped cross-rotation numerical control machine equipment

Abstract

The invention relates to two-axis Y-shaped cross-rotation numerical control machine equipment which is matched with a three-axis machining center for use and can achieve the function of a five-axis machining center. The axes of two non-orthogonal rotation shafts of the equipment are crossed in a coplanar mode at the angle of 135 degrees, the posture of a workpiece clamped on the equipment can display at will within the sphere center angle range of 180 degrees through rotation of the two rotation shafts. The numerical control machine equipment has the characteristics that each rotation shaft is a large-diameter shaft and supported by two bearings which are long in spacing, so that radial rigidity of the shafts and stability of the axes are guaranteed; a rotary encoder is installed at the end of each rotation shaft for high-precision tracking of rotation angles; the two rotation shafts are driven by double servo motors respectively, driving moment is increased during synergy drive, transmission fit clearance can be removed during interference drive, and positioning accuracy is guaranteed; each rotation shaft is formed by a dual movement mechanism including duplex bearing support positioning and annular guide rail support positioning, and therefore the equipment is good in stability, good in rigidity and high in precision.

Description

technical field [0001] The invention relates to a two-axis numerical control mechanical equipment, in particular to a two-axis Y-shaped cross-rotating numerical control mechanical equipment, which can be used as a universal workbench with a three-axis machining center to realize the function of a five-axis machining center, and can also be used As a two-axis industrial robot arm used in conjunction with other equipment, it belongs to the field of equipment manufacturing. Background technique [0002] Five-axis CNC machining centers usually add two rotary axes to three orthogonal linear axes to realize multi-face machining and complex curved surface machining. There are three conventional methods: one is three orthogonal linear axes plus The two-axis rotating power head is called a universal head five-axis machining center; the second is three orthogonal linear axes plus a cradle and a turntable, which is called a cradle-type five-axis machining center; the other is a three-a...

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Problems solved by technology

[0002] Five-axis CNC machining centers usually add two rotary axes to three orthogonal linear axes to realize multi-face machining and complex curved surface machining. There are three conventional methods: one is three orthogonal linear axes plus The two-axis rotating power head is called a universal head five-axis machining center; the second is three orthogonal linear axes plus a cradle and a turntable, which is called a cradle-type five-axis machining center; the other is a three-axis machining center Intersecting linear axes plus single-axis swing head and single-axis turntable are called swing head turntable five-axis machining centers. The above three ways of five-axis machining have their own advantages and disadvantages. Universal head five-axis machining centers are more widely used. Wide range, but due to the addition of two rotating shafts on the tool spindle, the rigidity of the tool spindle is reduced, the cutting torque of the tool is small, and the speed of the tool spindle is also limited; the method of adding a turntable to the cradle does not affect the rigidity and speed of the spindle, which is suitable for heavy duty Cutting, but the width of the rocker arm limits the size of the workpiece; the way of single-axis swing head and single-axis turntable is a compromise between the advantages and disadvantages of the first two methods. Although the limitation of workpiece size is lifted and some spindle rigidity is appropriately improved, it does not It is not ideal, so it is necessary to provide a two-axis CNC mechanical equipment with high precision, high rigidity and wide applicability to meet the technical upgrading needs of the machining industry

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