阅读说明：本技术 一种水下连接器卡爪的制造方法 (Manufacturing method of underwater connector clamping jaw ) 是由 杜可普 郭昂 徐凤琼 荣晓玲 韩翠萍 杨延娟 徐佳娣 于 2018-08-30 设计创作，主要内容包括：本发明涉及深海石油钻采设备制造技术领域,具体涉及一种用于水下连接器卡爪的制造方法。利用优选材料,整体多件毛坯墩粗冲孔成形,锻件热处理后整体进行加工,并设计制作相应工装进行制造检测。如图1、2水下连接器卡爪及筒型工件,分别设计制作锥度夹头工装、线切割设备用筒型工件分度切割工装、侧面斜度定位工装及综合检测样板。本发明整体多件锻造成形、数控设备加工、专用承载分度工装、专用斜铁垫支装夹、检测方便；实现了尺寸精度高、一致性好、工艺路线简便、加工余量小、制造效率高,适用于批量生产；经产品使用,卡爪实现100%配对。(The invention relates to the technical field of manufacturing of deep-sea oil drilling and production equipment, in particular to a manufacturing method for a jaw of an underwater connector. And (3) upsetting, punching and forming a plurality of integral blanks by utilizing the optimized materials, integrally processing the forged piece after heat treatment, and designing and manufacturing corresponding tools for manufacturing and detecting. Referring to fig. 1 and 2, a taper chuck tool, a cylindrical workpiece indexing cutting tool for linear cutting equipment, a side slope positioning tool and a comprehensive detection sample plate are respectively designed and manufactured for a jaw of an underwater connector and a cylindrical workpiece. The invention has the advantages of integral multi-piece forging forming, numerical control equipment processing, special bearing indexing tool, special wedge pad clamping and convenient detection; the method has the advantages of high dimensional accuracy, good consistency, simple and convenient process route, small machining allowance and high manufacturing efficiency, and is suitable for batch production; the jaws achieve 100% pairing through product use.)

1. A method for manufacturing a jaw of an underwater connector is characterized in that: the manufacturing process of the underwater connector clamping jaw comprises the following steps of upsetting, punching and forming a plurality of integral blanks, integrally processing a forged piece after heat treatment, and designing and manufacturing corresponding tools for manufacturing and detecting; the material is F22(105ksi) high-grade high-quality low-alloy Cr-Mo-V steel, the performance acceptance standard Rm (sigma b)585-780MPa, ReL (sigma 0.2) is not less than 415 MPa, A (delta 4) is not less than 18 percent, and Z (psi) is not less than 45 percent.

2. The method of manufacturing a subsea connector jaw according to claim 1, characterized in that: the taper chuck tool comprises: a left half ring and a right half ring; the inner diameter phid of the left half ring and the right half ring is determined according to the taper excircle size of the lower end of the connector jaw cylindrical workpiece, the outer diameter phiD is determined according to the taper chuck tool strength and the clamping capacity of the numerical control lathe, the left half ring and the right half ring comprise positioning stop tables and are matched with the lower end of the connector jaw cylindrical workpiece, and the left half ring and the right half ring are integrally machined and then are divided into two halves in the middle to facilitate clamping of the workpiece.

3. The method of manufacturing a subsea connector jaw according to claim 1, characterized in that: the comprehensive detection template comprises: an inner detection template and an outer detection template; the inner detection sample plate is determined according to the size of an inner hole of the connector clamping jaw cylindrical workpiece, the outer detection sample plate is determined according to the size of an outer circle of the connector clamping jaw cylindrical workpiece, and the inner detection sample plate and the outer detection sample plate perform rapid size comprehensive detection on the connector clamping jaw cylindrical workpiece through light transmittance.

4. The method of manufacturing a subsea connector jaw according to claim 1, characterized in that: the cylindrical workpiece indexing cutting tool comprises a bearing indexing disc, an outer fixing plate and an inner centering ring; the bearing indexing disc is formed by assembling and welding profile steel and plates, a stop table and a roller way for placing steel balls are machined in the middle of the bearing indexing disc, the bearing and indexing effects are achieved, the sizes of the outer fixing plate and the inner centering ring are designed according to the size of a cylindrical workpiece of the connector clamping jaw, and the outer fixing plate and the inner centering ring are adjusted and locked through bolts, so that the positioning and centering effects are achieved.

5. The method of manufacturing a subsea connector jaw according to claim 1, characterized in that: the side slope positioning tool comprises an inclined iron, a baffle, a positioning column and a fastening bolt; the inclined iron inclination is determined according to the inclined plane of the connector clamping jaw, the inclined plane which is not convenient to machine is converted into a plane parallel to the workbench, the first positioning column and the second positioning column are determined according to the size of the outer arc surface of the connector clamping jaw, and the baffle is fixed at one end of the inclined iron through three groups of fastening bolts to play a positioning role.

Technical Field

The invention relates to the technical field of manufacturing of deep-sea oil drilling and production equipment, in particular to a manufacturing method for a jaw of an underwater connector.

Background

The underwater connector is a matching component suitable for the development engineering of the ocean deepwater oil and gas field, the clamping jaws are uniformly distributed on the periphery of the upper hub seat, each set of connector is matched with a plurality of clamping jaws, when the upper hub seat and the lower hub seat of the connector are connected, the underwater robot drives the hydraulic cylinder on the mounting tool to extend out, drives the upper driving ring on the mounting tool to move downwards, and drives the clamping jaws to shrink, so that the upper hub seat and the lower hub seat are tightly pressed with the sealing ring, and the locking and sealing of the connector are realized. Due to the limitation of the overall dimension of deep sea underwater products, in order to ensure the reliable work of the overall structure of the underwater connector, the jack catch needs to be prevented from automatically opening under the action of internal pressure after an installation tool is withdrawn, the jack catch is designed into a multi-curved-surface combined structure, the difficulty is brought to the processing and the manufacturing of the jack catch of the underwater connector, and a single blank is processed by a processing center in a conventional manufacturing method.

The conventional manufacturing method has the following problems: the programming difficulty is caused by the multi-curved surface structure, and the qualified rate of the clamping jaws is influenced; all sizes are not easy to control in the processing process, and the consistency of the whole set of products is poor; the appearance is complex, the production efficiency is low and the processing period is long due to repeated clamping; the single blank has low production efficiency and large machining allowance, and is not suitable for batch production.

Disclosure of Invention

In order to avoid the problems, the invention aims to provide a method for manufacturing a jaw of an underwater connector, which comprises the steps of upsetting, punching and forming a plurality of integral blanks, integrally processing a forged piece after heat treatment, and designing and manufacturing corresponding tools for manufacturing and detecting, so that the jaw meets the design and use requirements.

In order to achieve the purpose, the invention adopts the technical scheme that: the material is F22(105ksi) high-grade high-quality low-alloy Cr-Mo-V steel, the performance acceptance standard Rm (sigma b)585-780MPa, ReL (sigma 0.2) is not less than 415 MPa, A (delta 4) is not less than 18 percent, and Z (psi) is not less than 45 percent; NACE MR0175 certification limits its supply strength to 22HRC max. The underwater connector jaws need to be used in groups, and the matching length error is within 0.05 mm. The manufacturing process for the underwater connector jaws comprises the following steps:

1) blanking: preparing materials according to the weight of a plurality of (21) pieces, sawing and blanking as required, and heating as required.

2) Blank making and punching: upsetting, punching and reaming a blank by using a free forging hammer, measuring and controlling the initial forging temperature and the final forging temperature to be 1220/800 ℃, controlling the forging ratio to be 4.3, rounding, flattening and forming, and finally obtaining the seamless circular ring with accurately controlled size. The seamless ring serves as a multi-piece jaw blank.

3) And (3) heat treatment normalizing: normalizing the seamless ring in a cyclone tempering furnace of heat treatment equipment, wherein the normalizing temperature is 950 ℃, and air cooling.

4) Rough turning: and roughly turning each part of the seamless ring on a lathe to leave a margin of 6-8mm, and chamfering.

5) Thermal treatment hardening and tempering: heating the roughly processed seamless ring in a trolley type resistance furnace of heat treatment equipment, preserving heat at 930 ℃, and quenching by adopting an oil cooling mode; then tempering at 680 +/-20 ℃, and then air cooling; and (3) carrying out performance test on the test bar in the same furnace after heat treatment to ensure that the material performance Rm (sigma b)585-780MPa after heat treatment, ReL (sigma 0.2) is not less than 415 MPa, A (delta 4) is not less than 18 percent and Z (psi) is not less than 45 percent.

6) Finish turning: the seamless ring after heat treatment is subjected to numerical control machining by establishing a three-dimensional model on a numerical control lathe and an automatic programming software according to a coordinate determination program; manufacturing a taper chuck tool for a taper excircle of which one end is turned to be alive and can not be directly clamped, and performing numerical control machining on the rest special-shaped surface through clamping the taper chuck tool cylindrical excircle to form a connector clamping jaw cylindrical workpiece; the problem that a common measuring tool for workpieces with multi-curved surface structures cannot measure is solved, a comprehensive detection sample plate for the inner and outer shapes of the cylindrical workpieces with the connector jaws is manufactured, and the size consistency of products is guaranteed.

7) Wire cutting: the connector jack catch barrel-shaped work piece structure is complicated, weight size is big and bottom plane size is little, and during wire-electrode cutting processing, because of the needs of discharging, the work piece must be placed on the wire-electrode cutting equipment workstation, simultaneously in cutting process, has the deformation toppling probably and finally influences jack catch processingquality, makes the barrel-shaped work piece graduation cutting frock for wire-electrode cutting equipment to above problem.

8) Scribing, milling and clamping: the connector jack catch multi-curved surface structure is difficult to clamp in a complex appearance, and side slope positioning tools are manufactured for milling the side faces on the two sides.

9) Painting and assembling: after the connector jaws are machined, in order to meet deep sea working conditions, the surfaces of the connector jaws are subjected to sand blasting treatment, wherein the phenolic epoxy primer is 100 micrometers, and the epoxy primer and the epoxy finish are 100 micrometers respectively; the components are assembled into a complete product for use.

Preferably, the jaw of the underwater connector is made of F22(105ksi) high-grade high-quality low-alloy Cr-Mo-V steel according to the jaw performance and deep-sea use requirements.

In the step 6), the taper chuck tool comprises: left semi-ring and right semi-ring. The inner diameter phid of the left half ring and the right half ring is determined according to the taper excircle size of the lower end of the connector jaw cylindrical workpiece, the outer diameter phiD is determined according to the taper chuck tool strength and the clamping capacity of the numerical control lathe, the left half ring and the right half ring comprise positioning stop tables and are matched with the lower end of the connector jaw cylindrical workpiece, and the left half ring and the right half ring are integrally machined and then are divided into two halves in the middle to facilitate clamping of the workpiece.

In the step 6), the integrated detection template includes: an inner detection template and an outer detection template. The inner detection sample plate is determined according to the size of an inner hole of the connector clamping jaw cylindrical workpiece, the outer detection sample plate is determined according to the size of an outer circle of the connector clamping jaw cylindrical workpiece, and the inner detection sample plate and the outer detection sample plate perform rapid size comprehensive detection on the connector clamping jaw cylindrical workpiece through light transmittance.

In the step 7), the cylindrical workpiece indexing cutting tool comprises a bearing indexing disc, an outer fixing plate and an inner centering ring. The bearing indexing disc is formed by assembling and welding profile steel and plates, a stop table and a roller way for placing steel balls are machined in the middle of the bearing indexing disc, the bearing and indexing effects are achieved, the sizes of the outer fixing plate and the inner centering ring are designed according to the size of a cylindrical workpiece of the connector clamping jaw, and the outer fixing plate and the inner centering ring are adjusted and locked through bolts, so that the positioning and centering effects are achieved.

In the step 8), the side slope positioning tool comprises an inclined iron, a baffle, a positioning column and a fastening bolt. The inclined iron inclination is determined according to the inclined plane of the connector clamping jaw, the inclined plane which is not convenient to machine is converted into a plane parallel to the workbench, the first positioning column and the second positioning column are determined according to the size of the outer arc surface of the connector clamping jaw, and the baffle is fixed at one end of the inclined iron through three groups of fastening bolts to play a positioning role.

The invention has the beneficial effects that: a special tool is designed, a plurality of parts are integrally forged and formed, and numerical control equipment is used for processing, so that the dimensional precision of the parts is improved, and the dimensional consistency of grouped products is ensured; the special comprehensive detection template is used for detection, the size of the workpiece is convenient to measure, the workpiece can be accurately controlled, and 100% pairing is realized; the process route is simpler and more convenient, the complex curved surface is realized on a lathe by using a simple tool, and the processing efficiency is high; the special bearing indexing tool and the special wedge pad support are utilized, the material utilization rate is high, the manufacturing efficiency is high, and the method is suitable for batch production.

Drawings

The invention is further described below with reference to the accompanying drawings and examples.

Fig. 1 is a schematic view of the subsea connector jaws and a cartridge-type workpiece.

Fig. 2 is a schematic view of the taper collet fixture.

Fig. 3 is a schematic diagram of the integrated test template.

Fig. 4 is a schematic structural diagram of the indexing and cutting tool for the cylindrical workpiece.

FIG. 5 is a schematic view of the side slope positioning tool.

In the drawings 1-5, 1 is an underwater connector clamping jaw, 2 is an underwater connector clamping jaw cylindrical workpiece, 3 is a taper chuck tooling left half ring, 4 is a taper chuck tooling right half ring, 5 is an external detection sample plate, 6 is an internal detection sample plate, 7 is a bearing dividing plate, 8 is an external fixing plate, 9 is an internal centralizing ring, 10 is an oblique iron, 11 is a baffle plate, 12 is a positioning column, 13 is a fastening bolt

Description of specific implementation procedures:

the present invention will be further described with reference to the following examples.

The underwater connector clamping jaw shown in FIG. 1 is made of F22(105ksi) high-grade high-quality low-alloy Cr-Mo-V steel, and has performance acceptance standard Rm (sigma b)585-780MPa, ReL (sigma 0.2) not less than 415 MPa, A (delta 4) not less than 18 percent and Z (psi) not less than 45 percent; the NACER 0175 certification limits its supply strength to 22HRC max. The underwater connector jaws 1 need to be used in groups, and the matching length error is within 0.05 mm. The manufacturing process for the subsea connector jaws 1 comprises the following steps:

1) blanking: preparing materials according to the weight of a plurality of (21) pieces, sawing and blanking as required, and heating as required.

2) Blank making and punching: upsetting, punching and reaming a blank by using a free forging hammer, measuring and controlling the initial forging temperature and the final forging temperature to be 1220/800 ℃, controlling the forging ratio to be 4.3, rounding, flattening and forming, and finally obtaining the seamless circular ring with accurately controlled size. The seamless ring serves as a blank for a multi-part jaw 1.

3) And (3) heat treatment normalizing: normalizing the seamless ring in a cyclone tempering furnace of heat treatment equipment, wherein the normalizing temperature is 950 ℃, and air cooling.

4) Rough turning: and roughly turning each part of the seamless ring on a lathe to leave a margin of 6-8mm, and chamfering.

5) Thermal treatment hardening and tempering: heating the roughly processed seamless ring in a trolley type resistance furnace of heat treatment equipment, preserving heat at 930 ℃, and quenching by adopting an oil cooling mode; then tempering at 680 +/-20 ℃, and then air cooling; and (3) carrying out performance test on the test bar in the same furnace after heat treatment to ensure that the material performance Rm (sigma b)585-780MPa after heat treatment, ReL (sigma 0.2) is not less than 415 MPa, A (delta 4) is not less than 18 percent and Z (psi) is not less than 45 percent.

6) Finish turning: the seamless ring after heat treatment is subjected to numerical control machining by establishing a three-dimensional model on a numerical control lathe and an automatic programming software according to a coordinate determination program; manufacturing a tool for a taper excircle which is turned to be alive at one end and can not be directly clamped, sleeving a seamless ring turned at one end by clamping, and carrying out numerical control machining on the rest part of the cylindrical excircle consisting of a left half ring 3 and a right half ring 4 of the taper chuck tool to form a connector clamping jaw cylindrical workpiece 2; to the unable measuring problem of many curved surface structure work piece ordinary measuring tool, make connector jack catch cylinder type work piece 2 outer detection model 5 and interior detection model 6, through the quick, high-efficient detection of comprehensive detection model, guarantee product size uniformity.

7) Wire cutting: the connector jack catch tubular workpiece 2 is complex in structure, large in weight and small in bottom plane size, when in linear cutting machining, due to the discharge requirement, the workpiece must be placed on a workbench of linear cutting equipment, meanwhile, in the cutting process, the deformation and overturning possibility exists, and the machining quality of the jack catch 1 is finally influenced, the indexing cutting tool for the connector jack catch tubular workpiece 2 for the linear cutting equipment is manufactured, the bearing index plate 7 of the indexing cutting tool bears and rolls indexing, the outer fixing plate 8 realizes outer side positioning and centering, and the inner centering ring 9 realizes inner side positioning and centering.

8) Scribing, milling and clamping: the connector jack catch 1 is difficult to clamp in a complex appearance of a multi-curved-surface structure, a side slope positioning tool is manufactured for milling the side faces of two sides, inclined iron 10 of the connector jack catch 1 realizes inclined plane conversion, a baffle 11 realizes end positioning, a positioning column 12 realizes special-shaped side positioning, and a fastening bolt 13 realizes fixing of the baffle on the inclined iron 10.

9) Painting and assembling: after the connector claw 1 is processed, in order to meet the deep sea working condition, the surface is subjected to sand blasting treatment, the novolac epoxy primer is 100 microns, and the epoxy primer and the epoxy finish are 100 microns respectively; the components are assembled into a complete product for use.

In the step 6), the taper chuck tool comprises: taper chuck frock left semi-ring 3 and taper chuck frock right semi-ring 4. The inner diameter phid of the left half ring 3 of the taper chuck tool and the inner diameter phid of the right half ring 4 of the taper chuck tool are determined according to the size of the taper excircle at the lower end of the connector jaw cylindrical workpiece 2, the outer diameter phid is determined according to the strength of the taper chuck tool and the clamping capacity of a numerically controlled lathe, the left half ring 3 of the taper chuck tool and the right half ring 4 of the taper chuck tool comprise a positioning stop table which is matched with the lower end of the connector jaw cylindrical workpiece 2, and the left half ring 3 of the taper chuck tool and the right half ring 4 of the taper chuck tool are integrally machined and then are divided into two halves to be directly sleeved outside.

In the step 6), the integrated detection template includes: an outer detection template 5 and an inner detection template 6. The outer detection sample plate 5 is determined according to the size of the outer circle of the connector jaw cylindrical workpiece 2, the inner detection sample plate 6 is determined according to the size of the inner hole of the connector jaw cylindrical workpiece 2, and the outer detection sample plate 5 and the inner detection sample plate 6 perform rapid and efficient comprehensive size detection on the connector jaw cylindrical workpiece 2 through transmittance, so that the size consistency of products is ensured.

In the step 7), the cylindrical workpiece indexing cutting tool comprises a bearing indexing disc 7, an outer fixing plate 8 and an inner centering ring 9. The bearing indexing disc 7 is formed by assembling and welding profile steel and plates, the connector clamping jaw cylindrical workpiece 2 is placed in a machining stopping table, the lower end of the connector clamping jaw cylindrical workpiece is in contact with steel balls placed in a rolling way, the bearing and indexing effects are achieved, the size of the outer fixing plate 8 and the size of the inner centering ring 9 are designed according to the size of the connector clamping jaw cylindrical workpiece 2, and the positioning and centering effects are achieved in the cutting and indexing process through bolt adjustment and locking.

In the step 8), the side slope positioning tool comprises an inclined iron 10, a baffle plate 11, a positioning column 12 and a fastening bolt 13. The inclination of the wedge 10 is determined according to the inclined plane of the connector clamping jaw 1, so that the inclined plane which is not convenient to machine is converted into a plane parallel to a workbench, the positioning column 12 is determined according to the size of the outer arc surface of the connector clamping jaw 1, and the baffle 11 is fixed at one end of the wedge 10 through three groups of fastening bolts 13 and plays a role in positioning the connector clamping jaw 1.

The above description is only a preferred embodiment of the present invention, and the above specific embodiments are not intended to limit the present invention, and modifications, modifications or equivalents thereof, which may occur to those skilled in the art, are included within the scope of the present invention.