CN206325969U - Box face thread Pilot hole section rounding device - Google Patents

Abstract

Box face thread Pilot hole rounding device, including frame, fixed seat, body fixture, lead column, mobile sliding block, hydraulic cylinder, piston rod, Rounding Moulds fixed plate and endoporus Rounding Moulds, lead column is parallel to be fixedly mounted between fixed seat and body fixture, mobile sliding block is movably sleeved in lead column, hydraulic cylinder is fixedly mounted in fixed seat, piston rod is by Driven by Hydraulic Cylinder, piston rod is fixedly connected with mobile sliding block, the Rounding Moulds fixed plate for being provided with endoporus Rounding Moulds is fixedly mounted on mobile sliding block, the center of endoporus Rounding Moulds and the central coaxial of body fixture, the whole round section diameter of endoporus Rounding Moulds is equal to the qualified thread Pilot hole aperture of steel pipe to be corrected, the shift motion of piston rod is more than pipe end thread Pilot hole length.Using the utility model, prevented that casing tube internal hole is oval or interior appearance misalignment of axe caused by joint processing axis deviate with casing axis, pipe end uniform wall thickness, the tensile strength of product is good, and design performance is high, and the disposable qualification rate of finished product is high.

Description

Box face thread Pilot hole section rounding device

Technical field：

The utility model is related to steel pipe shaping field, more particularly to a kind of box face thread Pilot hole rounding device.

Background technology：

Even to this day, the oil field easily exploited has been exploited totally substantially, from now on, and oil exploitation will be towards deeper, more severe Region exploited.Petroleum casing pipe is in this complicated field underground by from interior external pressure, stretching, compression, bending and torsion Etc. the compound action of power, people propose more stringent performance requirement to the jointing structure of petroleum casing pipe, inclined in well Under the oil field operating conditions such as small, down-hole operation relative difficulty window sidetracking, the reparation of old well, the thread connecting joint with box cupling form Easily it is hampered, inconvenient for use, direct linkage type nipple is just into the first choice of people.Its joint external diameter of direct linkage type nipple is relative Conventional cannula jointing external diameter is smaller, so as to add annular space space, is conducive to going into the well and the underground work, Neng Gouyou such as cement the well The damage of colliding with of nipple and the borehole wall is prevented to effect, so as to ensure smoothly going into the well for sleeve pipe.But in actual use, direct linkage type Nipple still suffers from defect, and the difficulty of processing of direct linkage type nipple is more than the thread connecting joint of box cupling form, direct linkage type By machine tool jaw clamping appearance centering during nipple internal thread machining, and in the manufacturing process of seamless steel pipe, pipe end circularity Usually keep certain ovality, because casing tube internal hole ellipse influence or in appearance misalignment of axe can cause joint process axis with set Pipe axis runout, joint screw thread and the transition of casing tube internal hole junction are unsmooth in terms of profile, can increase sleeve pipe to a certain extent The frictional resistance of interior fluid, in addition, the FAQs of direct linkage type nipple is exactly female adapter " bias ", in its reason and sleeve pipe Hole is oval relevant with pipe end bending, and internal thread " bias " causes internal and external threads joint not coaxial after connecting, when sleeve pipe is by axle To that can be produced during load, addition bend tube end maching residual wall thickness is uneven, and the stretch-proof that thinning place can directly affect product is strong Degree, design performance reduction, the disposable qualification rate of finished product is low, and the oil well report of whole mouth cost million~ten million is likely to result in when serious It is useless.How to solve the problems, such as that straight-connecting sleeve pipe female adapter processing axis runout becomes current urgent problem.

Utility model content：

The purpose of utility model is to provide box face thread Pilot hole rounding device, and it can make direct linkage type nipple platform Shouldered wall thickness is consistent, the problem of not resulting in bias, improves product quality.

Technical solution adopted in the utility model is：

Box face thread Pilot hole rounding device, it is characterized in that：Including frame, fixed seat, body fixture, lead column, shifting Movable slider, hydraulic cylinder, piston rod, Rounding Moulds fixed plate and endoporus Rounding Moulds, fixed seat and body fixture are fixedly mounted on frame Work top on, at least three lead columns are parallel to be fixedly mounted between fixed seat and body fixture, and mobile slide block set is mounted in In lead column, mobile sliding block can move back and forth along lead column, and hydraulic cylinder is fixedly mounted on the left end of fixed seat, and piston rod is by liquid Cylinder pressure is driven, and the right-hand member of piston rod is fixedly connected through fixed seat with the left end of mobile sliding block, and Rounding Moulds fixed plate is fixedly mounted In the right-hand member of mobile sliding block, the left end of endoporus Rounding Moulds is fixedly mounted in the right-hand member of Rounding Moulds fixed plate, endoporus Rounding Moulds The central coaxial of the heart and body fixture, and it is parallel with the workbench of frame, the right-hand member of endoporus Rounding Moulds is followed successively by from right to left to be determined Heart section, changeover portion and whole round section, changeover portion are cone, and changeover portion right side diameter is less than left side diameter, changeover portion right-hand member The equal diameters of face diameter and the equal diameters of centering section, changeover portion left side diameter and whole round section, the diameter of centering section is less than The thread Pilot hole aperture of steel pipe to be corrected, the diameter of whole round section is equal to the qualified thread Pilot hole aperture of steel pipe to be corrected, piston rod Shift motion be more than pipe end thread Pilot hole length.

Further, the body fixture is scroll chuck.

Further, Parallel Symmetric is installed with four lead columns two-by-two between fixed seat and body fixture.

Application method of the present utility model, steel tube fixing clamp to be corrected is held on body fixture, body end face to be corrected Contacted with endoporus Rounding Moulds right side, start hydraulic cylinder, piston rod drives mobile sliding block to be moved right along lead column, so that fixed Endoporus Rounding Moulds in Rounding Moulds fixed plate enter in the pipe end endoporus of steel pipe to be corrected, and the centering section of endoporus Rounding Moulds, which rises, to be led It is introduced into the pipe end endoporus of steel pipe to be corrected, enters after changeover portion and whole round section to effect, whole round section treats school after entering The pipe thread bottom outlet of positive steel pipe carries out full circle, after full circle terminates, and piston rod is retreated, and drives endoporus Rounding Moulds to exit to be corrected Steel pipe, that is, complete the full circle of the pipe thread bottom outlet of steel pipe to be corrected.

Due to using this box face thread Pilot hole rounding device, body fixture fixes steel pipe clamping to be corrected, due to The center of endoporus Rounding Moulds and the central coaxial of body fixture, so that the center of steel pipe to be corrected and the center of endoporus Rounding Moulds are same Axle, prevented that casing tube internal hole is oval or interior appearance misalignment of axe caused by joint processing axis deviate with casing axis, it is and interior Hole Rounding Moulds are divided into centering section, changeover portion and whole round section, and centering section play the guiding role, and whole round section is to pipe end screw thread to be corrected Bottom outlet carries out full circle, and the shift motion of piston rod is more than pipe end thread Pilot hole length, will not so in machining internal thread Because pipe end wall unevenness is even to cause internal thread eccentricity issues, the tensile strength of pipe end uniform wall thickness product is good, design performance Height, the disposable qualification rate of finished product is high.

Brief description of the drawings：

Fig. 1 is structural representation of the present utility model；

Fig. 2 is Fig. 1 top view；

Fig. 3 is the structural representation of endoporus Rounding Moulds；

Fig. 4 is that endoporus Rounding Moulds enter steel pipe full circle view to be corrected；

In figure：1- frames；2- fixed seats；3- body fixtures；4- lead columns；5- moves sliding block；6- hydraulic cylinders；7- pistons Bar；8- Rounding Moulds fixed plates；9- endoporus Rounding Moulds；10- steel pipes to be corrected；91- centering sections；92- changeover portions；93- whole round section.

Embodiment：

Illustrate embodiment of the present utility model below in conjunction with the accompanying drawings：

Box face thread Pilot hole rounding device, as shown in Figure 1 to 4, including frame 1, fixed seat 2, body fixture 3, Lead column 4, mobile sliding block 5, hydraulic cylinder 6, piston rod 7, Rounding Moulds fixed plate 8 and endoporus Rounding Moulds 9, fixed seat 2 and body folder Tool 3 is fixedly mounted on the work top of frame 1, and Parallel Symmetric is fixedly mounted on fixed seat 2 and body to four lead columns 4 two-by-two Between fixture 3, mobile sliding block 5 is sleeved in lead column 4, and mobile sliding block 5 can move back and forth along lead column 4, and hydraulic cylinder 6 is fixed The left end of mounting-fixing base 2, piston rod 7 is driven by hydraulic cylinder 6, and piston rod 7 is consolidated through fixed seat 2 and the left end of mobile sliding block 5 Fixed connection, Rounding Moulds fixed plate 8 is fixedly mounted on the right-hand member of mobile sliding block 5, and the left end of endoporus Rounding Moulds 9 is fixedly mounted on full circle The right-hand member of mould fixed plate 8, the body fixture 3 is scroll chuck, and the center and the center of body fixture 3 of endoporus Rounding Moulds 9 are same Axle, and parallel with the workbench of frame 1, the right-hand member of endoporus Rounding Moulds 9 is followed successively by centering section 91, changeover portion 92 and whole from right to left Circle section 93, changeover portion 92 be cone, the right side diameter of changeover portion 92 be less than left side diameter, the right side diameter of changeover portion 92 with The equal diameters for section 91 of feeling relieved, the equal diameters of the left side diameter of changeover portion 92 and whole round section 93, the diameter of centering section 91 is less than The thread Pilot hole aperture of steel pipe 10 to be corrected, the diameter of whole round section 93 is equal to the qualified thread Pilot hole aperture of steel pipe 10 to be corrected, The shift motion of piston rod 7 is more than pipe end thread Pilot hole length.

Claims (3)

1. box face thread Pilot hole section rounding device, it is characterized in that：Including frame (1), fixed seat (2), body fixture (3), Lead column (4), mobile sliding block (5), hydraulic cylinder (6), piston rod (7), Rounding Moulds fixed plate (8) and endoporus Rounding Moulds (9), it is fixed Seat (2) and body fixture (3) are fixedly mounted on the work top of frame (1), and at least three lead columns (4) are parallel to be fixedly mounted Between fixed seat (2) and body fixture (3), mobile sliding block (5) is sleeved in lead column (4), and mobile sliding block (5) can be along leading Move back and forth to post (4), hydraulic cylinder (6) is fixedly mounted on the left end of fixed seat (2), piston rod (7) is driven by hydraulic cylinder (6), The right-hand member of piston rod (7) is fixedly connected through fixed seat (2) with the left end of mobile sliding block (5), the fixed peace of Rounding Moulds fixed plate (8) Mounted in the right-hand member of mobile sliding block (5), the left end of endoporus Rounding Moulds (9) is fixedly mounted on the right-hand member of Rounding Moulds fixed plate (8), endoporus The center of Rounding Moulds (9) and the central coaxial of body fixture (3), and, endoporus Rounding Moulds (9) parallel with the workbench of frame (1) Right-hand member be followed successively by centering section (91), changeover portion (92) and whole round section (93) from right to left, changeover portion (92) is cone, transition Section (92) right side diameter is less than left side diameter, changeover portion (92) right side diameter and the equal diameters of centering section (91), mistake The equal diameters of section (92) left side diameter and whole round section (93) are crossed, the diameter of centering section (91) is less than steel pipe to be corrected (10) Aperture, the diameter of whole round section (93) is equal to the qualified aperture of steel pipe to be corrected (10), and the shift motion of piston rod (7) is more than steel pipe Pipe thread bottom outlet length.

2. according to claim 1 box face thread Pilot hole section rounding device, it is characterized in that：The body fixture (3) is Scroll chuck.

3. according to claim 1 box face thread Pilot hole section rounding device, it is characterized in that：In fixed seat (2) and body Parallel Symmetric is installed with four lead columns (4) two-by-two between fixture (3).