A Processing Technology of Inner Cylinder for Oil Drilling
A processing technology and oil drilling technology, applied in the field of inner cylinder processing, can solve problems affecting the relationship between full runout and position, very high coaxiality requirements, and difficult to guarantee processing accuracy, etc., to achieve low cost, high processing accuracy, and guaranteed The effect of verticality
Active Publication Date: 2018-06-15
CHENGDU YOULIANYOUTUO TECH CO LTD
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Problems solved by technology
[0002] In the process of oil drilling, due to the complex geology, the structure of the tool workpiece used is relatively complex, and its precision is required to be high, especially an inner cylinder for oil drilling, which has three thin-walled circles cylinder, and the coaxiality requirements of these three thin-walled cylinders are very high, and threads are also provided in the thin-walled cylinders, so the processing is extremely difficult, and the traditional process uses deep hole drilling or deep hole boring, which cannot achieve straightness , the position is prone to deflection during the processing, which affects the final full run-out and position relationship, making it difficult to guarantee the processing accuracy requirements
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[0031] The present invention will be further described below in conjunction with accompanying drawing, protection scope of the present invention is not limited to the following:
[0032] Such as Figure 1~Figure 8 Shown, a kind of processing technology of oil drilling inner tube, it comprises the following steps:
[0033] S1: blanking, select a round bar of Φ130mm, and cut the round bar into a workpiece with a length of 726±1mm on a sawing machine;
[0034] S2: Turning reference, the two ends of the workpiece in S1 are flattened, and the center hole is processed on the end surface, and then the outer circle of the workpiece is turned on the lathe, and the length of the workpiece is 725± 1mm, the diameter is 120±0.5mm, and the straightness of the outer circle is guaranteed to be less than 0.03mm;
[0035] S3: Milling the right end datum, clamp the workpiece processed in S2 on the machining center, mill an angular positioning step 1 with a width of 35±0.3mm and a height of 28±...
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Abstract
The invention discloses a processing process for an inner barrel for petroleum drilling. The processing process for the inner barrel comprises the following steps: S1, blanking; S2, carrying out datum turning; S3, carrying out right-end datum milling; S4, drilling wire perforating holes; S5, cutting the wire perforating holes; S6, roughly turning inner bores; S7, fine turning the left end part of a workpiece; S8, carrying out arc slot milling; S9, boring; S10, fine turning the right end part of the workpiece; S11, drilling and milling in a radial direction; S12, carrying out electric spark processing; S13, carrying out inner cavity wire cutting; and S14, finishing by use of a clamp to remove burrs. The processing process has the beneficial effects that the processing process has the advantages of being convenient to operate, high in processing precision and low in cost.
Description
technical field [0001] The invention relates to an inner cylinder processing technology, in particular to a processing technology for an inner cylinder used for oil drilling. Background technique [0002] In the process of oil drilling, due to the complex geology, the structure of the tool workpiece used is relatively complex, and its precision is required to be high, especially an inner cylinder for oil drilling, which has three thin-walled circles cylinder, and the coaxiality requirements of these three thin-walled cylinders are very high, and threads are also provided in the thin-walled cylinders, so the processing is extremely difficult, and the traditional process uses deep hole drilling or deep hole boring, which cannot achieve straightness , Position deflection is prone to occur during the processing, which affects the final full run-out and position relationship, making it difficult to guarantee the processing accuracy requirements. Contents of the invention [00...
Claims
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IPC IPC(8): B23H5/00B23P15/00
CPCB23H5/00B23P15/00
Inventor 代中华胡其林胡静
Owner CHENGDU YOULIANYOUTUO TECH CO LTD