Thermal deformation deviation correction mechanism and method for machining straightness of deep hole gun drill
A straightness and thermal deformation technology, applied in boring/drilling, metal processing equipment, drilling/drilling equipment, etc., can solve problems such as processing accidents, bending deformation, and the drilling direction of the drill deviates from the theoretical center axis of the workpiece. , to achieve the effect of reducing straightness error and realizing thermal correction
Pending Publication Date: 2021-10-26
YANCHENG INST OF TECH
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Problems solved by technology
Gun drills are also typical slender rod parts. The workpiece will be bent and deformed during the processing process, resulting in unavoidable straightness errors of the processed holes.
The amount of bending deformation of the workpiece increases with the increase of the drilling depth, causing the drilling direction of the drill bit to deviate more and more from the theoretical central axis of the workpiece. In severe cases, the drill bit of the gun drill will drill out from the side wall of the part, resulting in processing accident
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[0030] The present invention will be described in more detail below with reference to schematic diagrams, wherein preferred embodiments of the present invention are shown, and it should be understood that those skilled in the art can modify the present invention described herein while still achieving the advantageous effects of the present invention. Therefore, the following description should be understood as the broad knowledge of those skilled in the art, but not as a limitation of the present invention.
[0031] Such as Figure 1~7 As shown, a thermal deformation correction mechanism for straightness of deep hole gun drilling, including: heating coil 1, first mounting plate 7, second mounting plate 13, mounting seat, base 10, first ball screw pair, X Move the unit toward the slide rail 14 and in the Y direction. Wherein, the first lead screw 6 is used to drive the heating coil 1 to move along the Z direction, the Y direction moving unit drives the heating coil 1 to move a...
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The invention provides a thermal deformation deviation correction mechanism and method for machining straightness of a deep hole gun drill. The mechanism comprises a heating coil, a first mounting plate, a second mounting plate, a first ball screw pair, and an X-direction sliding rail, wherein the heating coil is used for heating a workpiece, the axis of the heating coil extends in the Y direction, and the heating coil is arranged on a first mounting plate; the first mounting plate is located above the second mounting plate in the Z direction; the first ball screw pair is used for driving the first mounting plate and comprises a first lead screw and a first nut, the first lead screw extends in the Z direction and penetrates through the first mounting plate from bottom to top, the first nut is clamped in the first mounting plate, and the lower end of the first lead screw is rotationally arranged on the second mounting plate; and the X-direction sliding rail is fixed to a mounting base, and is arranged on the second mounting plate in a sleeving mode, and the mounting base is fixed to a Y-direction moving unit. According to the thermal deformation deviation correction mechanism, the workpiece is locally heated through the heating coil, and the heating position of the heating coil can be adjusted according to the straightness condition, so that the workpiece is stressed and deformed, so as to compensate for the original straightness error, so that the thermal deviation correction of deep hole drilling is realized.
Description
technical field [0001] The invention belongs to the technical field of straightness control of deep holes, and in particular relates to a thermal deformation correction mechanism and method for straightness of deep hole gun drilling. Background technique [0002] At present, in the national key development industries such as aerospace, weapon equipment, and automobile manufacturing, there are more and more demands for small-diameter deep hole processing, especially for titanium alloy materials, such as various cabins in the C919 large aircraft. Hole processing of door shaft guide rail. Gun drilling is an important technical means to realize deep hole processing. However, due to the small diameter and long hole depth of the processed hole, the structure of the gun drill is relatively complex, and the relative rigidity is weak, there is a common problem that the straightness error of the processed hole is large. Straightness is an important technical index in deep hole proce...
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IPC IPC(8): B23B41/02B23B47/00
CPCB23B41/02B23B47/00
Inventor 李亮谢晨潘宇
Owner YANCHENG INST OF TECH