CN210067960U - Suit concatenation formula all-metal screw stator - Google Patents
Suit concatenation formula all-metal screw stator Download PDFInfo
- Publication number
- CN210067960U CN210067960U CN201920013922.4U CN201920013922U CN210067960U CN 210067960 U CN210067960 U CN 210067960U CN 201920013922 U CN201920013922 U CN 201920013922U CN 210067960 U CN210067960 U CN 210067960U
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- cylindrical metal
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- 239000002184 metal Substances 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 claims abstract description 13
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000005476 soldering Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims 1
- 238000005520 cutting process Methods 0.000 abstract description 9
- 238000005553 drilling Methods 0.000 abstract description 6
- 238000003801 milling Methods 0.000 abstract description 4
- 238000003466 welding Methods 0.000 abstract description 3
- 230000003245 working effect Effects 0.000 abstract description 2
- 210000000988 bone and bone Anatomy 0.000 description 6
- 230000005415 magnetization Effects 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a suit splicing type all-metal screw stator, the stator comprises a semi-cylindrical metal stator blank with the length of two stator leads, which is cut into two sections of semi-cylindrical splices after forming an inner spiral by cutting, and after the planes of the two semi-cylindrical splices are laminated, soldering tin is pressed into a fit clearance for welding to form a cylindrical metal stator inner core; milling male thread lines with the same rotation direction at two ends of the stator inner core, and inserting the stator inner core into a metal pipe fitting; female thread lines are milled at positions, corresponding to the stator inner cores, of the inner walls of the two ends of the metal pipe fitting, and the stator inner cores are fixed in the metal pipe fitting through threads meshed with the metal pipe fitting. The utility model discloses a method that the screw thread halving is fixed, the components of a whole that can function independently processing of metal stator, the processing of screw surface is more convenient and accurate in the stator, but the processing degree of difficulty of greatly reduced stator improves the cooperation precision, and then improves the working property and the life of all-metal screw drilling tool.
Description
Technical Field
The utility model relates to a stator processing field especially relates to a suit concatenation formula all-metal screw stator.
Background
Currently, the screw drill is generally a rubber stator and a metal rotor, which are in interference fit, but such a conventional screw drill can only be applied in a downhole environment at 180 ℃ and below. When the drill encounters a high-temperature stratum, the rubber stator is aged, deformed, even carbonized and the like, so that the matching between the stator and the rotor fails, and the screw drill working on the static pressure positive displacement principle cannot work normally.
The all-metal screw drilling tool adopts a metal stator and a metal rotor which are in clearance fit, and the working performance and the service life of the screw drilling tool are determined by the processing precision of the stator due to the fact that the stator is of an inner spiral curved surface structure. At present, screw stators at home and abroad mostly adopt methods such as internal broach forming, electrolytic corrosion processing, thin-wall stator sleeve external pressure forming and the like, but the problems of high processing control difficulty, low precision, difficult surface strengthening and the like generally exist, so that the developed metal screw drilling tool has low working performance and short service life.
SUMMERY OF THE UTILITY MODEL
To the shortcoming and not enough among the above-mentioned prior art, the utility model aims to provide a suit concatenation formula stator that can greatly reduce the all-metal stator processing degree of difficulty.
The utility model aims at realizing through the following technical scheme:
a sleeved and spliced all-metal screw stator comprises a semi-cylindrical metal stator blank with the length of two stator leads, wherein an inner screw with two leads is processed on the plane of a semi-cylindrical metal stator blank rod, and the semi-cylindrical metal stator blank is divided from the middle to form two semi-cylindrical metal stator splicers with the length of one lead;
pressing soldering tin into the fit clearance after the planes of the two semi-cylindrical metal stator splicing pieces are jointed for welding to form a cylindrical metal stator inner core;
milling male thread lines at two ends of the cylindrical metal stator inner core, wherein the thread directions of the two ends are the same;
the cylindrical metal stator inner core is inserted into a metal pipe fitting, female thread lines are milled at positions, corresponding to the cylindrical metal stator inner core, of inner walls of two ends of the metal pipe fitting, and the cylindrical metal stator inner core is fixed in the metal pipe fitting through threads meshed with the metal pipe fitting.
Preferably, the semi-cylindrical metal stator blank is a magnetized semi-cylindrical metal stator blank.
Preferably, the semi-cylindrical metal rod is magnetized in the forming process of the semi-cylindrical metal rod, the semi-cylindrical metal rod is formed by cooling and solidifying molten metal in a mold, and the forming process of the semi-cylindrical metal rod is completed in a strong magnetic field.
Preferably, the magnetic field strength of the strong magnetic field is greater than or equal to 0.3T.
Preferably, the one stator lead is 456 mm.
Compared with the prior art, the embodiment of the utility model provides a have following advantage at least:
the utility model discloses a magnetic force concatenation, screw thread halving are fixed and metal stator components of a whole that can function independently structure, make the interior screw surface of stator add man-hour more convenient and accurate, and the magnetism concatenation is more reasonable, but the processing degree of difficulty of greatly reduced stator improves the cooperation precision, and then improves the working property and the life of all-metal screw rod drilling tool. Specifically, the method comprises the following steps:
(1) the semi-cylindrical stator blank is adopted for processing, the self-designed clamp is used for clamping the stator blank, and the inner spiral surface of the stator is machined by a cutter, so that the problem of high difficulty in stator processing is solved emphatically, and the processing precision is improved.
(2) The novel design is characterized in that the stator blank is magnetized in the forming process of the stator blank, the two sections of stator opposite magnetic poles formed by cutting after magnetization are correspondingly buckled, soldering tin with high melting point is pressed in a fit gap, the sealing problem of the stator can be better solved, and meanwhile, when the rotor rotates, the stator is attracted by magnetic force around the stator to play a good enclosing role.
(3) By milling male threads at two ends of the stator and screwing the male threads into the steel sleeve with the matched female threads at two ends, the stator fixing problem is solved, the problem of transverse and longitudinal forces of the rotor from a given belt in the operation process is solved, the stator is firmer in use due to thread matching, and the drilling tool is more stable in use.
Drawings
FIG. 1 is a schematic structural view of the sleeved and spliced all-metal screw stator of the present invention;
fig. 2 is a schematic structural view of the cylindrical metal stator core of the sleeved and spliced all-metal screw stator of the present invention;
FIG. 3 is a schematic structural view of a semi-cylindrical metal stator splice of the sleeved and spliced all-metal screw stator of the present invention;
fig. 4 is a schematic structural view of the metal pipe fitting of the sleeved and spliced all-metal screw stator of the present invention;
FIG. 5 is a schematic structural view of the semi-cylindrical metal stator blank of the nested and assembled all-metal screw stator of the present invention fixed to the fixture during internal thread machining;
FIG. 6 is a schematic view of the structure of the fixture of FIG. 5;
FIG. 7 is an enlarged view of a portion of FIG. 6 at A;
fig. 8 is the utility model discloses the end face structure schematic diagram of suit concatenation formula all-metal screw stator.
Detailed Description
The present invention will be described in further detail with reference to the following examples, which are illustrative only and not limiting, and the scope of the present invention should not be limited thereby.
A method for processing a sleeved spliced all-metal screw stator comprises the following steps:
s1, determining initial parameters of the stator;
s2, generating a stator skeleton map according to the stator skeleton equation;
s3, making equidistant curves on the stator bone line, and making equidistant curves with equidistant radiuses on the stator bone line outwards to obtain an end face molded line of the motor stator;
s4, calculating the radius and lead of the outline circle of the stator according to the initial parameter values of the motor stator;
s5, generating a stator three-dimensional model by the stator end face molded line, the outline circle radius, the lead and the initial parameters of the stator;
s6, ordering two lead semi-cylindrical stator blanks;
s7, placing the semi-cylindrical stator blanks with two leads on a clamp 4 for fixing;
s8, continuously cutting from the head end to the tail end of the semi-cylindrical stator blank by using a cutting tool to complete the internal spiral processing of the stator;
s9, cutting the middle part of the semi-cylindrical stator blank by using a cutting tool to form two sections of semi-cylindrical metal stator splices 1 with one lead, buckling the two sections of semi-cylindrical metal stator splices 1 together end to end, and pressing soldering tin with higher melting point into the gap to form a cylindrical metal stator inner core 2;
and S10, milling male threads at two ends of the cylindrical metal stator inner core 2, screwing the male threads into the metal pipe fitting 3 with a lead length and internal and female threads at two ends, and combining the metal pipe fitting with the lead length into a stator.
In step S1, the initial parameters of the stator include the number of heads N of the stator, the eccentricity e, the equidistant radius coefficient r0, and the pitch h. In this embodiment, N is 4, e is 6mm, r0 is 1.5, and h is 114 mm.
In step S2, the stator skeleton equation is:
wherein: n is the number of stator heads, R2 ═ e, R2Is the radius of the rolling circle;
and programming and importing the stator bone line equation into MATLAB software to generate a stator bone line diagram.
In step S3, equidistant curves are drawn for the stator bone line, and the equidistant radius coefficient r is known0And radius of rolling circle R2Then the equidistant radius is:
r＝r0×R2；
and making equidistant curves of the equidistant radiuses of the stator bone lines outwards to obtain the fixed end face molded lines of the motor.
In step S4, the stator contour circle radius is obtained according to the following formula:
L2＝(N+r0)×R2
the lead Ts of the stator can be obtained by the following formula:
Ts＝Nh。
from the above two formulae, L2＝33mm，Ts＝456mm。
In step S5, a three-dimensional stator map is generated in the three-dimensional mapping software by the stator end surface profile, the radius of the contour circle, and the lead in combination with the pitch.
In step S6, the semi-cylindrical stator blank is ordered as follows: and pouring the molten steel into a mould of the blank, then putting the mould into a strong magnetic field for cooling, and hardening along with metal cooling to form the stator blank with magnetic outer surface. In the present embodiment, the magnetic field strength of the strong magnetic field is not less than 0.3T.
In step S8 and step S9, a groove corresponding to the stator blank profile of the two leads is formed on the jig 4, and flanges 5 are mounted on the horizontal end faces on both sides of the groove opening; a notch 6 is formed in the groove corresponding to the middle position of the stator ingredients of the two leads, and the notch 6 is perpendicular to the direction of the groove; after stator blanks of two leads are placed in the groove, the flanges 5 are fixed through bolts, opposite edges of the two flanges 5 are suspended above an opening of the groove through the bolts, the stator blanks of the two leads in the groove are clamped in the groove, and a cutting tool processes inner screws of the stator blanks of the two leads from the space between the two flanges 5; after the inner screw is machined, the stator blanks of the two leads are divided into two stator blanks with equal length by a cutting tool along the notch 6 on the groove.
A sleeved spliced type all-metal screw stator comprises a semi-cylindrical metal rod 7 with two stator lead lengths, wherein two inner spirals with the lead lengths are processed on the plane of the semi-cylindrical metal rod 7, and the semi-cylindrical metal rod 7 is divided from the middle to form two semi-cylindrical metal stator splicers 1 with one lead length;
pressing soldering tin into the fit clearance after the planes of the two semi-cylindrical metal stator splicers 1 are jointed for welding to form a cylindrical metal stator inner core 2;
male thread lines are milled at two ends of the cylindrical metal stator inner core 2, and the thread turning directions at the two ends are the same;
the cylindrical metal stator inner core 2 is inserted into a metal pipe fitting 3, female thread lines are milled at positions, corresponding to the cylindrical metal stator inner core 2, of inner walls of two ends of the metal pipe fitting 3, and the cylindrical metal stator inner core 2 is fixed in the metal pipe fitting 3 through threads meshed with the metal pipe fitting 3.
The semi-cylindrical metal rod 7 is formed by cooling and solidifying molten metal in a mould, and the forming process of the semi-cylindrical metal rod 7 is completed in a strong magnetic field (the magnetic field intensity is not less than 0.3T). Firstly, the semi-cylindrical metal stator splicer 1 at two ends formed by cutting after magnetization becomes two independent magnets, opposite magnetic poles of the two magnets are opposite according to the principle that like poles repel and opposite poles attract, and the planes of the two semi-cylindrical metal rods 7 are buckled together, so that the bonding strength between the two semi-cylindrical metal rods 7 can be increased. Secondly, the magnetization of the magnetized stator can improve the rotating efficiency of the rotor, preferably, the magnetization is finished in the process of cooling and solidifying molten metal, so that the finally formed stator can be permanently magnetized, and the magnetized stator can improve the rotating efficiency of the rotor. The formed stator blank is magnetized only temporarily, and the stator loses the characteristics of the magnet after a period of time.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A sleeved spliced all-metal screw stator is characterized by comprising a cylindrical metal stator inner core, wherein the metal stator inner core is formed by laminating the planes of two semi-cylindrical metal stator splicers with the lengths of one lead, the fit clearance of the two semi-cylindrical metal stator splicers is welded through soldering tin, male thread lines are milled at two ends of the cylindrical metal stator inner core, and the thread turning directions of the two ends are the same;
the cylindrical metal stator inner core is spliced with a metal pipe fitting, female thread lines are milled at positions, corresponding to the cylindrical metal stator inner core, of inner walls of two ends of the metal pipe fitting, and the cylindrical metal stator inner core is fixed in the metal pipe fitting through threads meshed with the metal pipe fitting.
2. The nested split-joint all-metal screw stator according to claim 1, wherein the semi-cylindrical metal stator core is a magnetized semi-cylindrical metal stator core.
3. The nested split-type all-metal screw stator according to claim 2, wherein the semi-cylindrical metal stator core is magnetized during the forming process, and is formed by cooling and solidifying molten metal in a mold, and the forming process of the semi-cylindrical metal stator core is completed in a strong magnetic field.
4. The nested split-type all-metal screw stator according to claim 3, wherein the magnetic field strength of the high magnetic field is 0.3T or more.
5. The nested split all-metal screw stator of claim 1, wherein one stator lead is 456 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920013922.4U CN210067960U (en) | 2019-01-04 | 2019-01-04 | Suit concatenation formula all-metal screw stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920013922.4U CN210067960U (en) | 2019-01-04 | 2019-01-04 | Suit concatenation formula all-metal screw stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210067960U true CN210067960U (en) | 2020-02-14 |
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ID=69424631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920013922.4U Expired - Fee Related CN210067960U (en) | 2019-01-04 | 2019-01-04 | Suit concatenation formula all-metal screw stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210067960U (en) |
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2019
- 2019-01-04 CN CN201920013922.4U patent/CN210067960U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200214 |