CN209724258U - A kind of assembled helicoid hydraulic motor metal stator - Google Patents
A kind of assembled helicoid hydraulic motor metal stator Download PDFInfo
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- CN209724258U CN209724258U CN201920367638.7U CN201920367638U CN209724258U CN 209724258 U CN209724258 U CN 209724258U CN 201920367638 U CN201920367638 U CN 201920367638U CN 209724258 U CN209724258 U CN 209724258U
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- pipe nipple
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- hydraulic motor
- lock
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Abstract
The utility model discloses a kind of assembled helicoid hydraulic motor metal stators, including casing, lock-on connection and the isometric stator pipe nipple of multistage, by the way that bolt is circumferentially positioned and multistage stator pipe nipple is mounted in casing by lock-on connection axially position, to be assembled to form the helicoid hydraulic motor metal stator of required length.The utility model is using segmentation rotary splicing, both ends suspension locking, the sealing of high temperature resistant circular seal ring, round tube suit, the method that bolt is fixed and interior spiral shell chrome-faced is strengthened, reduce difficulty of processing, cooperation precision is improved, and then improves the working performance and service life of all-metal screw drilling tool.Keep actual processing length small using isometric processing method is segmented, it is processed using broaching tool milling or CNC milling machine, machining accuracy easy to control, radial machining accuracy is higher, only need a nc program, repeatedly processing carries out assembling the metal stator for concatenating and can forming required length, precision circulation, solves the problems, such as that stator processing precision is inadequate.
Description
Technical field
The utility model relates to stator processing field more particularly to a kind of spliced all-metal screw stator of suit and its add
Work method.
Background technique
Currently, helicoid hydraulic motor is generally elastomer stator and metallic rotator, uses interference fit, but this routine between the two
Helicoid hydraulic motor is applicable only to 180 DEG C and subsurface environment below.When boring chance high-temperature stratum, elastomer stator occurs aging, becomes
Shape, or even the problems such as carbonization, the cooperation between stator, rotor is caused to be failed, so that the screw rod to be worked with static pressure positive-displacement principle
Drilling tool can not work normally.
All-metal screw drilling tool uses metal stator and metallic rotator, is between the two clearance fit, in stator because of it is
Spiral camber structure, machining accuracy determine the working performance and service life of helicoid hydraulic motor.Currently, domestic and international screw stator is more
The methods of external pressure shaping, but generally existing machining control are covered using the forming of pole inside broach, electrolytic etching processing, thin-wall stator
Difficulty is big, precision is low, it is difficult to the problems such as surface peening, so that the metal screw drilling tool working performance developed is low, the service life is short, mainly
Reason is that stator processing length is longer, and radial accuracy does not reach requirement, and the cooperation between stator, rotor is caused to be failed.
Utility model content
For above-mentioned shortcoming and defect in the prior art, can greatly be reduced the purpose of this utility model is to provide a kind of
Whole-metal stator difficulty of processing is set with spliced stator and the processing method of the stator.
The purpose of this utility model is achieved through the following technical solutions:
A kind of assembled helicoid hydraulic motor metal stator, including casing, lock-on connection and the isometric stator pipe nipple of multistage, every section
The length of stator pipe nipple is the multiple of its screw pitch；Circumferential direction along each stator pipe nipple is evenly distributed at least three bolts hole；Multistage stator is short
The end face of section is successively docked, and the inside spin curve of the stator pipe nipple after docking is successively contiguously formed continuous Inner Spiral Surface；Institute
Set pipe sleeve is stated on the multistage stator pipe nipple being docking together；Described sleeve pipe corresponds to whole bolts hole on stator pipe nipple and opens up
There is the bolt hole all the same with its aperture, screw pitch, the bolt hole on bolt hole and stator pipe nipple in described sleeve pipe passes through bolt
The company of wearing；The lock-on connection is mounted at the casing both ends of filling stator pipe nipple；The lock-on connection by with cannula cavity
Between be threadedly engaged screw-in casing, and abutted with the end face of the stator pipe nipple close to cannula tip.
Preferably, the lead of the screw thread on described sleeve pipe inner wall be greater than box face with and its immediate stator pipe nipple
The spacing of end face, by being threadedly engaged the preload adjusted between lock-on connection and stator pipe nipple between lock-on connection and casing
Power.
Preferably, the lock-on connection is ring joint, and the inside spin end face that inner ring opening is greater than stator pipe nipple is open
Profile.
Preferably, sealing ring is provided between the end face of two adjacent stator pipe nipples.
Preferably, the threaded hole on each stator pipe nipple is blind hole.
Preferably, the bolt is cross recess depression hexagon-headed bolt.
Compared with prior art, the utility model embodiment has at least the following advantages:
The utility model is tightly connected using segmentation rotary splicing, both ends hanging lock, high temperature resistant circular seal ring seals, round tube
It is set with the method that the fixed processing of bolt and interior spiral shell chrome-faced are strengthened, difficulty of processing can be substantially reduced, improves cooperation precision, in turn
Improve the working performance and service life of all-metal screw drilling tool.
Keep actual processing length small by the way of being segmented isometric processing, is processed using broaching tool milling or CNC milling machine, easily
Machining accuracy is controlled, keeps radial machining accuracy higher；The multiple that processing length is stator screw pitch to be processed is chosen, a number is only needed
Processing program is controlled, the multiple processing of circulation, which carries out assembling concatenation, can form the metal stator of required length, precision, to solve decision
The inadequate problem of sub- machining accuracy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model assembled helicoid hydraulic motor metal stator；
Fig. 2 is the clamp structure schematic diagram utilized in the utility model assembled helicoid hydraulic motor metal stator assembling process；
Fig. 3 is the assembly diagrammatic cross-section of the utility model assembled helicoid hydraulic motor metal stator and fixture；
Fig. 4 is partial enlarged view at A in Fig. 3.
Specific embodiment
Below with reference to embodiment, the utility model is described in further detail, and it is not limit that following embodiment, which is descriptive,
Qualitatively, protection scope of this utility model cannot be limited by this.
As shown in Figure 1, a kind of assembled helicoid hydraulic motor metal stator, including casing 1, (casing 1 in the application is steel
Pipe), lock-on connection 3 and the isometric stator pipe nipple 2 of multistage (in this application, " short " in stator pipe nipple 2 and refer not to specific
Length, but the concept of the entire length relative to stator to be processed in contrast), the length of every section of stator pipe nipple 2 is its spiral shell
Away from multiple；Circumferential direction along each stator pipe nipple 2 is evenly distributed at least three bolts hole 5；The end face of multistage stator pipe nipple 2 is successively docked,
The inside spin curve of stator pipe nipple 2 after docking is successively contiguously formed continuous Inner Spiral Surface；1 set of described sleeve pipe is being docked at
On multistage stator pipe nipple 2 together；Whole bolts hole 5 on the corresponding stator pipe nipple 2 of described sleeve pipe 1 offer with its aperture,
Screw pitch bolt hole 5 all the same, the bolt hole 5 on bolt hole 5 and stator pipe nipple 2 in described sleeve pipe 1 wear company by bolt；In
1 both ends of casing of filling stator pipe nipple 2 are mounted on the lock-on connection 3；The lock-on connection 3 by with 1 inner cavity of casing it
Between be threadedly engaged and screw in casing 1, and abutted with the end face of stator pipe nipple 2 close to 1 end of casing.
The lead of screw thread on 1 inner wall of described sleeve pipe be greater than 1 end face of casing with and its immediate stator pipe nipple 2 end face
Spacing, pass through and be threadedly engaged the preload adjusted between lock-on connection 3 and stator pipe nipple 2 between lock-on connection 3 and casing 1
Power.
The lock-on connection 3 is ring joint, and inner ring opening is greater than the inside spin end face opening contours of stator pipe nipple 2.
Threaded hole on each stator pipe nipple 2 is blind hole.
The bolt is cross recess depression hexagon-headed bolt, which is standard component (GBT29.2-1988).
A kind of assembled helicoid hydraulic motor metal stator axial direction processing and assembling, includes the following steps:
S1, processes N sections of stator pipe nipples 2, and the sum of length of N sections of stator pipe nipples 2 is equal to the length of stator to be processed, each stator
The length of pipe nipple 2 is the multiple of its screw pitch, which is preferably integral multiple, and the inside spin that stator pipe nipple 2 each in this way is formed is bent
Face is consistent, so that every section processing program is all.
S2 is processed and stator screw thread to be processed according to the length of stator to be processed, profile, screw pitch and rotating cycle
The fixture 4 of cooperation；When clamp for machining 4, the stator inside spin parameter complete one of 4 internal screw thread parameters of fixture and entire lead
It causes, is mainly used to dock each sectionalized stator inside spin end face, its inside spin curve is made to form continuous inner helical surface.
The specific process principle of fixture 4: it is completely the same using stator faces molded line, screw pitch and rotating cycle and stator,
Processing method is consistent with processing rotor, and lathe in machining milling can be used, and specific structure is as shown in Figure 2.
N sections of stator pipe nipples 2 are successively screwed on fixture 4 by S3, form 2 inside spin curve of each section of stator pipe nipple continuously
Inner helical surface.
The N section stator pipe nipple 2 and fixture 4 that assemble in step S3 are inserted into a casing 1 by S4.In 2 He of stator pipe nipple
In the assembling process of fixture 4, high-temperature resistant seal ring is installed in the end face between adjacent stators pipe nipple 2, and 2 end face of stator pipe nipple is corresponding
High-temperature resistant seal ring is machined with annular groove, and high-temperature resistant seal ring is assembled in annular groove by the way of half-loaded, to two stator pipe nipples 2
After being docked to together, two annular grooves are encapsulated in for entire high-temperature resistant seal ring is concealed by the annular groove on two stator pipe nipples 2
In the closing chamber 6 of formation (as shown in Figure 4), between high-temperature resistant seal ring and the closing chamber 6 by the way of swelling cooperation；Stator
After the assembly is completed, the entirety after assembly is inserted into casing 1 for pipe nipple 2, high-temperature resistant seal ring and fixture 4.
S5 screws in lock-on connection 3 at 1 both ends of casing, stator pipe nipple 2 is pushed against by lock-on connection 3, to the N section in casing 1
Stator pipe nipple 2 carries out axial restraint, while high-temperature resistant seal ring being squeezed to closing chamber 6, enhances sealing effect.Whole assembly
Structure is as shown in Figure 3.
S6 corresponds to 2 milling bolt hole 5 of every section of stator pipe nipple in 1 periphery of casing, and milling cutter penetrates after casing 1 again when processing
It continues deeper into and blind hole is formed to the processing of stator pipe nipple 2；Bolt hole 5 on corresponding casing 1 and stator pipe nipple 2 screws in bolt and carries out week
To positioning.
S7 screws out fixture 4 out of stator, and clamp structure is as shown in Figure 2.
Further include following steps after the completion of step S7:
S8 is turning with the metal stator Inner Spiral Surface chromium plating formed.
When processing the inner helical surface of stator pipe nipple 2, processed by broaching tool milling or CNC milling machine.
The technical process can be replaced S2 → S1 → S3 → S4 → S5 → S6 → S7.
It selects for four-head stator in the present embodiment, is processed and consolidated for a stator pipe nipple 2 with its 1/4 lead
Fixed, the structure after the completion of stator concatenation is as shown in Figure 1.
Stator splices assembling flow path: each section of stator pipe nipple 2 being successively screwed on fixture 4, is then placed in pre-designed
(1 internal diameter of casing can be identical with 2 outer diameter of stator pipe nipple or be slightly larger than 2 outer diameter of stator pipe nipple casing 1, and stator pipe nipple 2 is facilitated to enter set
Pipe 1) in and pre-tightened by lock-on connection 3, prevent stator pipe nipple 2 along 1 axial float of casing；Then corresponding in 1 periphery of casing
Every section of 2 milling bolt hole 5 of stator pipe nipple, when processing milling cutter penetrate be further continued for deeply forming the processing of stator pipe nipple 2 after casing 1 it is blind
Hole；Bolt hole 5 on corresponding casing 1 and stator pipe nipple 2 screws in bolt and carries out that circumferentially positioned (bolt also has limitation stator pipe nipple
2 along 1 axial float of casing effect).It is as shown in Figure 3 that the assembling structure obtained after stator assembly is carried out using fixture 4.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should
Subject to the scope of protection of the claims.
Claims (6)
1. a kind of assembled helicoid hydraulic motor metal stator, which is characterized in that including casing, lock-on connection and the isometric stator of multistage
Pipe nipple, the length of every section of stator pipe nipple are the multiple of its screw pitch；Circumferential direction along each stator pipe nipple is evenly distributed at least three bolts hole；It is more
The end face of Duan Dingzi pipe nipple is successively docked, and the inside spin curve of the stator pipe nipple after docking is successively contiguously formed continuous inside spin
Curved surface；Described sleeve pipe covers on the multistage stator pipe nipple being docking together；Described sleeve pipe corresponds to whole bolts on stator pipe nipple
Kong Jun offers the bolt hole all the same with its aperture, screw pitch, the bolt hole on bolt hole and stator pipe nipple in described sleeve pipe
Company is worn by bolt；The lock-on connection is mounted at the casing both ends of filling stator pipe nipple；The lock-on connection by with
It is threadedly engaged screw-in casing between cannula cavity, and is abutted with the end face of the stator pipe nipple close to cannula tip.
2. assembled helicoid hydraulic motor metal stator according to claim 1, which is characterized in that the spiral shell on described sleeve pipe inner wall
The lead of line be greater than box face with and its immediate stator pipe nipple end face spacing, by between lock-on connection and casing
Be threadedly engaged the pretightning force adjusted between lock-on connection and stator pipe nipple.
3. assembled helicoid hydraulic motor metal stator according to claim 1 or 2, which is characterized in that the lock-on connection is
Ring joint, inner ring opening are greater than the inside spin end face opening contours of stator pipe nipple.
4. assembled helicoid hydraulic motor metal stator according to claim 1 or 2, which is characterized in that in two adjacent stators
Sealing ring is provided between the end face of pipe nipple.
5. assembled helicoid hydraulic motor metal stator according to claim 1, which is characterized in that the screw thread on each stator pipe nipple
Hole is blind hole.
6. assembled helicoid hydraulic motor metal stator according to claim 1, which is characterized in that the bolt is cross geosynclinal concave
Cave hexagon-headed bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920367638.7U CN209724258U (en) | 2019-03-22 | 2019-03-22 | A kind of assembled helicoid hydraulic motor metal stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920367638.7U CN209724258U (en) | 2019-03-22 | 2019-03-22 | A kind of assembled helicoid hydraulic motor metal stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209724258U true CN209724258U (en) | 2019-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920367638.7U Active CN209724258U (en) | 2019-03-22 | 2019-03-22 | A kind of assembled helicoid hydraulic motor metal stator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915044A (en) * | 2019-03-22 | 2019-06-21 | 中国地质大学（北京） | A kind of assembled helicoid hydraulic motor metal stator and its axial processing and assembling |
-
2019
- 2019-03-22 CN CN201920367638.7U patent/CN209724258U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915044A (en) * | 2019-03-22 | 2019-06-21 | 中国地质大学（北京） | A kind of assembled helicoid hydraulic motor metal stator and its axial processing and assembling |
| CN109915044B (en) * | 2019-03-22 | 2023-11-21 | 中国地质大学（北京） | Axial machining and assembling process for metal stator of assembled screw drilling tool |
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