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Processing method of conical tube internal thread of large diameter

A processing method and internal thread technology, which is applied in the processing field of large-diameter tapered pipe internal threads, can solve the problems of large-diameter tapered pipe internal thread processing difficulty and high production cost, so as to reduce processing and manufacturing costs, meet precision and use requirements, and process simple effect

Inactive Publication Date: 2009-03-18
MCC SFRE HEAVY IND EQUIP
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method to solve the problems of large-diameter tapered pipe internal thread processing difficulty and high production cost.

Method used

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  • Processing method of conical tube internal thread of large diameter
  • Processing method of conical tube internal thread of large diameter

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Experimental program
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Embodiment

[0016] Such as figure 2 As shown, the processing of the tapered pipe internal thread of the inventive method adopts the method that several sections of cylindrical thread lines with different diameters are connected end to end, and the projection of a pitch thread along the axial direction is approximately a full circle, which is divided into several equal parts, as For the convenience of calculation and programming, the whole circle is divided into 16 equal parts, and each equal part is 22.5°. Within the angle range of each equal part, the internal thread is processed as a cylindrical thread, that is, the Z axis moves P / 16 (P is the pitch), The X and Y axes walk a 1 / 16 arc, and at the end of each arc, the coordinates of X and Y gradually decrease by the set value according to the slope value of the internal thread, and move to the starting point of the next arc for processing. A section of circular arc, after the X and Y axes walk a full circle, the Z axis just walks a pitch...

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Abstract

The invention discloses a method used for processing a large-diameter conical pipe internal thread, comprising the steps as follows: a numerical control machine tool mainshaft is provided with a thread milling cutter; a screw pitch of the internal thread of the conical pipe on the workpiece is divided into a plurality of equal sections in the axis line direction; the internal wall arc of the workpiece corresponding to each equal section is executed according to the processing type of cylindrical thread; after the cylindrical thread of one equal section is processed, the Z-axis of the machine tools feeds by a screw pitch; meanwhile, X and Y coordinate axis synthesis arc processing diameter corresponding to the thread milling cutter is reduced correspondingly; the workpiece internal wall arc corresponding to each equal section is executed according to the processing type of the cylindrical thread, and the like; a plurality of cylindrical threads of different diameters are communicated end to end till that the required conical pipe internal thread depth is processed. The internal thread of the conical pipe processed by the method can completely meet the precision and the usage requirement and reduce the production cost.

Description

technical field [0001] The invention belongs to the technical field of mechanical equipment manufacturing, and relates to a method for processing the internal thread of a large-diameter tapered pipe. Background technique [0002] The inner thread of the tapered pipe has good sealing performance and is widely used in the connection of gas and hydraulic pipelines. Taper is generally used to process the internal thread of tapered pipe on machine parts, but because the tap of large-diameter tapered pipe internal thread is difficult to manufacture and the price is expensive, the processing of large-diameter tapered pipe internal thread has become a difficult problem often encountered in mechanical equipment manufacturing. . Contents of the invention [0003] The object of the present invention is to provide a method that solves the problems of high difficulty in processing the inner thread of a large-diameter tapered pipe and high production cost. [0004] The technical solut...

Claims

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Application Information

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IPC IPC(8): B23G1/32B23G1/44
Inventor 赵朋李彬鬲雪艾
Owner MCC SFRE HEAVY IND EQUIP
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