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Machining method for series holes of large-size thin-walled bow-shaped part

A processing method and technology of series holes, which are used in metal processing equipment, metal processing mechanical parts, manufacturing tools, etc., can solve the problem that linear dimensional accuracy and geometric dimensional accuracy are easy to exceed tolerance, it is difficult to meet the drawing design, and the position of series holes is poor, etc. problems, to achieve the effect of reducing cutting stress, meeting drawing design requirements, and releasing cutting stress

Inactive Publication Date: 2020-04-10
DONGFANG (GUANGZHOU) HEAVY MASCH CO LTD
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Problems solved by technology

The workpiece is prone to deformation during processing. After the processing is completed, the workpiece is in a free state, and the size and shape tolerance of the workpiece are measured according to the requirements of the drawing. Poor, it is difficult to meet the requirements of drawing design, the detection of series holes is mainly based on the central axis of the arc of the part and the diameter perpendicular to the central axis

Method used

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  • Machining method for series holes of large-size thin-walled bow-shaped part
  • Machining method for series holes of large-size thin-walled bow-shaped part
  • Machining method for series holes of large-size thin-walled bow-shaped part

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Embodiment Construction

[0032] This part will describe the specific embodiment of the present invention in detail, and the preferred embodiment of the present invention is shown in the accompanying drawings. Each technical feature and overall technical solution of the invention, but it should not be understood as a limitation on the protection scope of the present invention.

[0033] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0034] I...

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Abstract

The invention discloses a machining method for series holes of a large-size thin-walled bow-shaped part. The machining method comprises the following steps: blanking, shape rough-milling, natural aging, shape semi-finish-milling, natural aging, finish-milling of the upper surface and finish-boring. According to the machining method of the series holes of the large-size thin-walled bow-shaped part,natural aging is increased between rough-milling and semi-finish-milling as well as between semi-finish-milling and finish-milling machining so as to release cutting stress, reduce deformation of a workpiece and avoid affecting the machining precision of subsequent boring, and hole milling is replaced with boring to reduce the cutting stress; and during finish-boring, the workpiece is clamped, before the workpiece is compressed, all compressing points are detected by a dial indicator, the same position is detected by the dial indicator when the workpiece is compressed, and data detected in the previously time and in the later time of all the positions are kept the same so as to avoid the situation that the position accuracy of serial hole machining is out of tolerance due to deformation of the workpiece before and after clamping, in this way, the position precision of serial hole machining is improved, the design requirements of a drawing are met, and the machining method is used forthe technical field of hole machining.

Description

technical field [0001] The invention relates to the technical field of hole processing, in particular to a method for processing a series of holes of large-size thin-walled arcuate parts. Background technique [0002] Large-sized thin-walled bow-shaped parts have an outer diameter of more than 3 meters and a thickness of less than 30mm. Several through holes are processed on it. The through holes are distributed along the arc direction, and the through holes have positional requirements. The existing processing process is as follows: blanking, rough machining of two planes, drilling, semi-finishing of two planes, milling of holes, and fine milling of holes. The workpiece is prone to deformation during processing. After the processing is completed, the workpiece is in a free state, and the size and shape tolerance of the workpiece are measured according to the requirements of the drawing. It is difficult to meet the requirements of drawing design. The detection of series hol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P13/02B23P15/00B23Q3/00B23Q17/00
CPCB23P13/02B23P15/00B23Q3/00B23Q17/00
Inventor 韩峰江国焱
Owner DONGFANG (GUANGZHOU) HEAVY MASCH CO LTD
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