CN203209805U - Hydraulic external thread cold-rolling device - Google Patents
Hydraulic external thread cold-rolling device Download PDFInfo
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- CN203209805U CN203209805U CN 201320223888 CN201320223888U CN203209805U CN 203209805 U CN203209805 U CN 203209805U CN 201320223888 CN201320223888 CN 201320223888 CN 201320223888 U CN201320223888 U CN 201320223888U CN 203209805 U CN203209805 U CN 203209805U
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- cantilever
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- hydraulic oil
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Abstract
The utility model discloses a hydraulic external thread cold-rolling device, which comprises a cantilever, hydraulic oil, a pressure gauge, a dowel, a jaw shaft, a mandrel and a roller, wherein the roller is arranged in an outward open groove of the jaw shaft through the mandrel; an axial groove formed in the top of the middle section of the jaw shaft is coaxial with the open groove; a cylindrical shaft is arranged at the other end of the jaw shaft; sealing parts are arranged outside the annular wall of the jaw shaft; the cantilever is an integrated two-section component, a cylinder body is arranged on the front part of the cantilever, and a rectangular long-strip clamping section is arranged on the rear part of the cantilever; the hydraulic oil is arranged in the cylinder body; the end, with the sealing parts, of the jaw shaft is stuffed into the cylinder body to form a hydraulic oil cylinder; a radial hole communicated with the pressure gauge is formed in the tail end of the cylinder body; the dowel is radially arranged at the top of the outer wall of the cylinder body; and the screwed-in dowel is inserted into the axial groove in the outer wall of the middle section of the jaw shaft to form a guide structure. According to the device, the hydraulic oil cylinder is used for supporting the roller, the magnitude of force applied during cold-rolling is displayed through the pressure gauge, and quantitative pressure application is favorable for controlling batch cold-rolling under the condition of the same magnitude to ensure the consistency and the stability of the cold-rolling quality.
Description
Technical field
The utility model relates to a kind of machining utensil, and specifically, the utility model relates to a kind of for external screw thread cold rolling device.
Background technology
Cold rolling technology belongs to one of non-Cutting Process, uses more extensive in mechanical processing industry.The roller spreading that metal component surface is pressed under the normal temperature state, force the microcosmic evagination metal material generation plasticity of metal component surface rough layer to flow, unnecessary metal flows in the adjacent microscopic pockets, its result is except improving the metal component surface roughness grade number, the surface texture crystal grain of hardware is attenuated and fibrillatable, thereby produce " flow harden " phenomenon, reach the purpose of the intensity, case hardness and the anti-fatigue ability that improve hardware.The present age, the oil drilling degree of depth reached thousands of rice, and the nipple of oil drilling tools connects weight, the drilling well moment of torsion except bearing, and the power that also will withstand shocks is so have very high strength requirement to supporting oil drilling tools.Prior art mainly by the syndeton optimal design, select quality material and improve means such as Technology for Heating Processing and realize the high strength target.Although prior art is effective, can increase substantially oil drilling tools intensity, the serious accident of drilling tool fracture still takes place in the petroleum drilling engineering once in a while.For many years through numerous industry specialists analyses, detection and demonstration, the oil drilling tools fracture nearly all occurs in joint screw thread line root, its basic reason is that the thread surface of shaping by stock removal is coarse relatively, there is bigger internal stress, easily produce fatigue crack, the serious accident of oil drilling tools fracture does not take place in drilling well unavoidably under the special operation condition condition.
The utility model content
The utility model is primarily aimed at the deficiencies in the prior art, proposes a kind of fluid pressure type external screw thread cold rolling device, and this apparatus structure is simple, simple operation, quantification are exerted pressure, and the rolling spreading avoids excessive spreading to cause the metal bonding.
The utility model is achieved through the following technical solutions technical goal.
Fluid pressure type external screw thread cold rolling device, it comprises cantilever, hydraulic oil, Pressure gauge, pin, jaw axle, mandrel and roller.Its improvements are: the end that described jaw axle is equipped with open slot outwardly, roller is installed in the open slot by mandrel, roller freely rotates around mandrel.Outer wall top, jaw axle stage casing is provided with axial notch, and this groove and open slot are on the same center line.The jaw axle other end is cylinder axis, and the ring outer wall is provided with seal.Described cantilever is the conjuncted member of binodal, preposition columniform cylinder body, and rearmounted rectangle is rectangular to be gripping section, holds hydraulic oil in the cylinder body of prone position cantilever, the jaw axle cooperates with the cylinder body of cantilever with the end by seal and forms hydraulic jack.The cylinder body end is provided with radial hole communicating pressure table up, and the outer wall of cylinder block top is provided with the pin of radially installing, and forms axially directed structure in the axial notch on the pin insertion jaw axle stage casing outer wall of screw-in.
In the said structure, the outer rim lateral cross section of roller is dihedral, dihedral with by the shape complementarity of rolled thread, roller integral body is hardened to HRC50～55.
The utility model compared with prior art has following good effect:
1, hydraulic jack is simple in structure, makes easily;
2, roll extrusion has damping effect under hydraulics, and is smooth bright and clean by the parts surface of cold rolling;
3, adopt the hydraulic jack supporting rollern, application of force size shows by Pressure gauge during cold rolling, and quantizing exerts pressure is conducive to control batch cold rolling under same value condition, guarantees the cold rolling uniform quality.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is Fig. 1 vertical view.
Fig. 3 is that the utility model is used for oil drilling tools joint external screw thread cold rolling embodiment schematic diagram.
The specific embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the utility model is described in further detail.
Fluid pressure type external screw thread cold rolling device shown in Figure 1, it comprises cantilever 1, hydraulic oil 2, Pressure gauge 3, pin 4, jaw axle 5, mandrel 6 and roller 7.Described jaw axle 5 is the straight-bar member, and axle head outwardly is provided with open slot, and roller 7 is installed in the open slot by mandrel 6, and roller 7 freely rotates around mandrel 6.The external screw thread of present embodiment roll extrusion oil drilling tools joint, this screw thread is triangle, so the outer rim lateral cross section of roller 7 is dihedral, its angle equals by the oil drilling tools joint external screw thread angle of roll extrusion.In order to improve the cold rolling quality, roller 7 integral body are hardened to HRC50～55.Outer wall top, jaw axle 5 stage casing is provided with axial notch, and the open slot of this groove and axle head is on the same center line.Jaw axle 5 other ends are cylinder axis, and the ring outer wall is provided with seal 5.1.Described cantilever 1 is the conjuncted member of binodal, preposition columniform cylinder body, rearmounted rectangle is rectangular to be gripping section, holds hydraulic oil 2 in the cylinder body of prone position cantilever 1, with jaw axle 5 to form hydraulic jack in the cylinder body of being gone into cantilever 1 by an end plug of seal 5.1.Application of force size during for the ease of the grasp roll extrusion, be provided with up radial hole communicating pressure table 3 at the cylinder body end of cantilever 1,7 pairs of externally threaded active forces of oil drilling tools joint of roller, make the pointer of Pressure gauge 3 produce corresponding deflection by hydraulic oil 2 conduction, application of force size when reflecting roll extrusion intuitively, be conducive to the guiding operation worker by technique initialization value cold rolling, guarantee product cold rolling quality.The utility model is in order to accomplish roller 7 position stabilities, be provided with the pin of radially installing 4 at the outer wall of cylinder block top of cantilever 1, form axially directed structure in the axial notch on the pin 4 insertion jaw axles 5 stage casing outer walls that screw in, also keep the cylinder body of cantilever 1 and the assembly relation of jaw axle 5 simultaneously.
When the utility model is used, gripping section with cantilever 1 is fixed on the platen earlier, move on to the position by the horizontal transmission position of lathe, to be roller 7 with the outer line of the oil drilling tools joint of rotation contact exerts pressure, platen is by being moved axially by the helical pitch of rolled thread at this moment, and roller 7 is being implemented externally threaded cold rolling operation when mandrel 6 rotates.Cold rolling is a kind of no Cutting Process that utilizes metal that " flow harden " characteristic is arranged at normal temperatures and design, being produced micro-plasticity by roll extrusion external screw thread top layer metal flows, the complementation of realization peak valley, thereby the external threaded surface roughness value is reduced, textura epidermoidea is chill and grain refinement, forms the fibrous of densification.In addition, by the external screw thread of cold rolling residual stress layer in the flow harden process.Generally speaking, oil drilling tools joint external screw thread ultimate strength and yield point by cold rolling all are improved, its serviceability, fatigue resistance, wearability and corrosion resistance also all are significantly improved, and prolong the service life of oil drilling tools joint greatly, reduce the generation of failure accidents.
The utility model by displacement roller 7, can carry out cold rolling to the outer wall of other axle sleeve class A of geometric unitA under the constant situation of structure.For example, selecting the outer rim lateral cross section for use is the roller 7 of circular arc or rectangle, just can make the outer step cold rolling of oil drilling tools joint, and its effect is identical with above-mentioned embodiment.
Claims (2)
1. fluid pressure type external screw thread cold rolling device, it comprises cantilever (1), hydraulic oil (2), Pressure gauge (3), pin (4), jaw axle (5), mandrel (6) and roller (7); It is characterized in that: the end that described jaw axle (5) is equipped with open slot outwardly, roller (7) is installed in the open slot by mandrel (6), roller (7) freely rotates around mandrel (6); Outer wall top, jaw axle (5) stage casing is provided with axial notch, and this groove and open slot are on the same center line; Jaw axle (5) other end is cylinder axis, and the ring outer wall is provided with seal (5.1); Described cantilever (1) is the conjuncted member of binodal, preposition columniform cylinder body, rearmounted rectangle is rectangular to be gripping section, holds hydraulic oil (2) in the cylinder body of prone position cantilever (1), and jaw axle (5) cooperates with the cylinder body of cantilever (1) with the end that seal (5.1) is arranged and forms hydraulic jack; The cylinder body end is provided with radial hole communicating pressure table (3) up, and the outer wall of cylinder block top is provided with the pin of radially installing (4), forms axially directed structure in the axial notch on the outer wall of the pin of screw-in (4) insertion jaw axle (5) stage casing.
2. fluid pressure type external screw thread cold rolling device according to claim 1, it is characterized in that: the outer rim lateral cross section of described roller (7) is dihedral, dihedral with by the shape complementarity of rolled thread, roller (7) integral body is hardened to HRC50～55.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320223888 CN203209805U (en) | 2013-04-28 | 2013-04-28 | Hydraulic external thread cold-rolling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320223888 CN203209805U (en) | 2013-04-28 | 2013-04-28 | Hydraulic external thread cold-rolling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203209805U true CN203209805U (en) | 2013-09-25 |
Family
ID=49199376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320223888 Expired - Fee Related CN203209805U (en) | 2013-04-28 | 2013-04-28 | Hydraulic external thread cold-rolling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203209805U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103212941A (en) * | 2013-04-28 | 2013-07-24 | 江苏曙光石油钻采设备有限公司 | Hydraulic type external thread cold rolling device |
| CN107186432A (en) * | 2017-07-27 | 2017-09-22 | 常州中车铁马科技实业有限公司 | Milled head and rolling tools |
-
2013
- 2013-04-28 CN CN 201320223888 patent/CN203209805U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103212941A (en) * | 2013-04-28 | 2013-07-24 | 江苏曙光石油钻采设备有限公司 | Hydraulic type external thread cold rolling device |
| CN107186432A (en) * | 2017-07-27 | 2017-09-22 | 常州中车铁马科技实业有限公司 | Milled head and rolling tools |
| CN107186432B (en) * | 2017-07-27 | 2019-09-13 | 常州中车铁马科技实业有限公司 | Milled head and rolling tools |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |