CN101791756A - High-precision elastic tapered bore rolling device of cone sealing pipe joint - Google Patents
High-precision elastic tapered bore rolling device of cone sealing pipe joint Download PDFInfo
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- CN101791756A CN101791756A CN 201019026140 CN201019026140A CN101791756A CN 101791756 A CN101791756 A CN 101791756A CN 201019026140 CN201019026140 CN 201019026140 CN 201019026140 A CN201019026140 A CN 201019026140A CN 101791756 A CN101791756 A CN 101791756A
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Abstract
The invention relates to a high-precision elastic tapered bore rolling device of a cone sealing pipe joint, which belongs to a machine processing tool. The rolling device comprises a knife handle body, a rectangular pressure spring, an outer sliding sleeve, a locating pin roll, a core sleeve, a rolling mandril, a bearing sleeve, a thrust ball bearing, an adjusting pad, a flange sleeve and a roller. Compared with the traditional processing methods of drilling, internal boring and polishing, the production efficiency can be improved manyfold by adopting the rolling device to roll the conical surface inner bore of the cone sealing pipe joint; the surface roughness can be not more than Ra0.4 so that the requirements of a working drawing are stably reached, and the metal surface of the conical surface inner bore is strengthened, and thereby, the strength and the hardness of the surface layer are improved. The rolling device has good generality, and a rolling head fitting the size of the cone sealing pipe joint can be rapidly replaced. The elasticity of the spring can enable the changes of the axial force and the radial force which are borne by the rolling device in rolling the conical surface inner bore to be smaller; compared with a rigid rolling device, the abrasion of the rolling head of the rolling device is reduced, and thereby, the service life of the rolling device is prolonged by 3 to 5 times.
Description
Technical field
The invention belongs to machine tools, relate to a kind of high-precision elastic tapered bore rolling device, refer in particular to a kind of high-precision elastic tapered bore rolling device of cone sealing pipe joint.
Background technology
The conical surface seal pipe joint is owing to accurate conical surface seal serving as the main auxiliary seals (as shown in Figure 6) such as O shape circle that are equipped with simultaneously, therefore sealing is reliable, stable, be widely used in industries such as electromechanics, light industry, petrochemical industry, be mainly used in hydraulic pressure, pneumatic and instrument measurement is in the height of medium, the middle pressure transmission system pipeline with oil, gas.When the conical surface seal pipe joint is used in seamless steel pipe, water gas pipe (the containing various stainless acid resistant steel pipes) system, can exempt various instrument and equipments in production and processing manufacturing process because of pipe in the harm that causes of the seepage of liquid.
Conical surface seal pipe joint as shown in Figure 7, the internal taper hole tapering of pipe joint is β among the figure, and the internal taper hole surface roughness requires to be Ra0.4, and according to national standard JB/T6381.1 regulation, the internal diameter of pipe exists
Between.Normally adopt the method for boring, reaming, fraising or bore hole, polishing to process in the existing at home process technology.But the taper hole surface of above-mentioned processing method processing is difficult to reach the surface roughness requirement of drawing, and working (machining) efficiency is low.
Summary of the invention
For overcoming above-mentioned the deficiencies in the prior art, the invention provides the general high accuracy taper hole of a kind of cone sealing pipe joint rolling device, adopt the conical surface endoporus of this device processing tube joint, production efficiency height, versatility are good, surface roughness can≤Ra0.32, stablely reach the requirement of work drawing.
Technical scheme of the present invention is as follows:
Device of the present invention is made up of toolholder body, rectangular pressure spring, outer sliding sleeve, alignment pin, core retainer plate, roll extrusion axle, bearing holder (housing, cover), thrust ball bearing, adjusting pad, Hua Lantao, roller etc.Wherein:
(1) toolholder body one end is a Morse taper shank, and taper shank can be installed in centering exactly in the taper hole of tail stock for machine tool sleeve.The other end of toolholder body is cylinder-shaped, and its endoporus and core retainer plate external diameter are slidingly matched, and both are connected by the alignment pin that is through core retainer plate middle part kidney slot.Place rectangular pressure spring in the hole of core retainer plate one end, an end of spring and the bottom connection of toolholder body inner chamber touch, because the kidney slot of core retainer plate contacts with alignment pin, make core retainer plate have certain spring preload pressure on one side.When core retainer plate is subjected to certain axial force, be free to indentation in toolholder body.Because axial force and radial force variation suffered when the elasticity of spring can make the rolling taper hole are less, compare the wearing and tearing that reduced rolling head with the rigidity rolling device, have prolonged the service life of rolling device.
(2) outer sliding sleeve is connected with the core retainer plate another side by the internal thread of an end, can follow core retainer plate during work and slide on the toolholder body external diameter.Can prevent that alignment pin from coming off and the dust dirt enters the surface that is slidingly matched.
(3) as shown in Figure 2, the rolling head of roll extrusion axle and bearing holder (housing, cover), thrust ball bearing, adjusting pad, Hua Lantao, group of rollers apparatus for converting.The external diameter face of cylinder of roll extrusion axle right-hand member can be contained in the installing hole of device core retainer plate, and fixes by holding screw.Unclamp holding screw and promptly can change the rolling head that meets cone sealing pipe joint taper hole size fast.The cylindrical head of the roll extrusion axle other end has a conical surface, and the outside dimension of cone and tapering size are according to being determined by the size of roll extrusion inner cone and angle.Bearing holder (housing, cover) is connected by the external screw thread of internal thread with roll extrusion axle middle bench.The bearing holder (housing, cover) endoporus is equipped with step surface and thrust ball bearing and the adjusting pad of Hua Lantao, and when bearing holder (housing, cover) was tightened on the roll extrusion axle, adjusting pad is used to adjust spent blue step surface that overlaps and the gap between the thrust ball bearing, and the Hua Lan cover can be rotated neatly.
(4) endoporus of Hua Lantao cooperates with the crest clearance of roll extrusion axle left end, and the step plane of Hua Lan cover right-hand member contacts with thrust ball bearing, makes after bearing axial force, still can freedom and flexibility rotate.Even several rectangular channels that distribute are used to lay the rolling roller on the conical surface of Hua Lan cover left end.The cross section of rectangular channel is made into back taper as shown in Figure 3, can prevent that roller from coming off after laying roller like this.Roller can select for use the standard rolling bearing steel needle roller through hardening to substitute, and also can make of high-speed steel or Hardmetal materials.The quantity of roller is determined according to the size that is rolled the aperture, is generally 3～6.
(5) rolling process principle: in internal taper hole rolling processing, the roller of rolling head is done screw type rolling on the top layer of processed cone-shaped wall along circumference, and to processed hole wall apply certain axially and radial pressure, the workpiece endoporus is under the roll extrusion power effect of roller, and its top layer metal produces strain and plastic deformation.Plastic deformation had both made the shape of part surface to be machined change, its institutional framework and physical property are changed, the unevenness crest and the trough of surface of the work are pressed and are filled and led up, thereby surface roughness value and the machining accuracy that has improved workpiece have been reduced, produced shearing slip by the lattice of roll extrusion layer metal, distortion, elongate, fibrillatable and fragmentation, make tissue become tight, crystal grain attenuates, grain shape is also extended along the maximum direction of distortion, in metal surface, produce simultaneously compression stress, strengthened in the metal surface, improve the intensity and the hardness on top layer.
The influence of workpiece endoporus preparation of surfaces roughness, know by experiment, modes such as the preparation of surfaces roughness of workpiece endoporus and residual and duplicating can influence the inner bore surface roughness after the rolling and processing, and Fig. 8 is that material is the relation curve of SUS316 stainless steel joint for pipeline workpiece taper hole rolling processing front and rear surfaces roughness.From this relation curve as can be seen: along with reducing of roll extrusion front surface roughness value, the surface roughness value after the roll extrusion also reduces.When the preparation of surfaces roughness was Ra6.3, the surface roughness after rolling and processing got final product≤Ra0.4.
Effect of the present invention is:
Compare with the method processing of boring, bore hole, polishing, adopt the conical surface endoporus of this device rolling cone sealing pipe joint, production efficiency can significantly improve, surface roughness can≤Ra0.4, stably reach the requirement of work drawing, and strengthened in the metal surface of conical surface endoporus, improve the intensity and the hardness on top layer.Versatility is good, can change the rolling head that meets cone sealing pipe joint taper hole size fast.Axial force and radial force variation suffered when the elasticity of spring can make the rolling taper hole are less, compare the wearing and tearing that reduced rolling head with the rigidity rolling device, can make improve 3～5 times the service life of rolling device.
Description of drawings
Fig. 1 high-precision elastic tapered bore rolling device of cone sealing pipe joint schematic diagram of the present invention;
The enlarged drawing of Fig. 2 device rolling head part;
Fig. 3 is the partial sectional view of Fig. 2 tapper part;
It is the rolling head partial graph of C1 that Fig. 4 bores the end maximum gauge;
It is the rolling head partial graph of C2 that Fig. 5 bores the end maximum gauge;
Fig. 6 conical surface seal pipe joint assembling schematic diagram;
Fig. 7 conical surface seal pipe joint part schematic diagram;
The relation curve of Fig. 8 pipe joint taper hole rolling processing front and rear surfaces roughness
The 1-toolholder body, the 2-rectangular pressure spring, the 3-outer sliding sleeve, the 4-alignment pin, the 5-core retainer plate, the 6-holding screw, 7-roll extrusion axle, 8-bearing holder (housing, cover), 9-adjusting pad, 10-thrust ball bearing, 11-are spent blue cover, 12-roller
The specific embodiment
As shown in Figure 1, device of the present invention is made up of toolholder body 1, rectangular pressure spring 2, outer sliding sleeve 3, alignment pin 4, core retainer plate 5, holding screw 6, roll extrusion axle 7, bearing holder (housing, cover) 8, adjusting pad 9, thrust ball bearing 10, Hua Lan cover 11, roller 12.Wherein:
(1) toolholder body 1 right-hand member is a Morse taper shank, and taper shank can be installed in centering exactly in the taper hole of tail stock for machine tool sleeve.The left end of toolholder body 1 is cylinder-shaped, and the external diameter of its endoporus and core retainer plate 5 is slidingly fitted, and both are connected by the alignment pin 4 that is through core retainer plate 5 middle part kidney slots.Place rectangular pressure spring 2 in the hole of core retainer plate 5 right-hand members, the bottom connection of the right-hand member of rectangular pressure spring 2 and toolholder body 1 inner chamber touches, because the kidney slot of core retainer plate 5 the right contacts with alignment pin 4, makes core retainer plate 5 have certain spring preload pressure.When core retainer plate 5 is subjected to certain axial force when work, be free to indentation in toolholder body 1.Because axial force and radial force variation suffered when the elasticity of rectangular pressure spring 2 can make the rolling taper hole are less, compare the wearing and tearing that reduced rolling head with other rigidity rolling device, have prolonged the service life of rolling device.
(2) outer sliding sleeve 3 is connected with core retainer plate 5 left ends by the internal thread of left end, can follow core retainer plate 5 during work and slide on the external diameter of toolholder body 1.Can prevent that alignment pin 4 from coming off and the dust dirt enters the surface that is slidingly matched.
(3) as shown in Figure 2, the rolling head of roll extrusion axle 7 and bearing holder (housing, cover) 8, thrust ball bearing 10, adjusting pad 9, Hua Lan cover 11, roller 12 component devices.The external diameter face of cylinder B of roll extrusion axle 7 right-hand members, (seeing Fig. 4 and Fig. 5) can be installed in the installing hole of core retainer plate 5, and fixing by holding screw 6.Unclamp holding screw 6 and promptly can change the rolling head that meets cone sealing pipe joint taper hole C1 (Fig. 4) or the serial different size of C2 (Fig. 5) fast.The cylindrical head of roll extrusion axle 7 left ends has a conical surface, and the outside dimension of cone and tapering size are according to being determined by the inner cone of roll extrusion cone sealing pipe joint.Bearing holder (housing, cover) 8 is connected by the external screw thread of internal thread with roll extrusion axle 7 middle benches.Step surface and the thrust ball bearing 10 and the adjusting pad 9 of Hua Lan cover 11 are installed in bearing holder (housing, cover) 8 endoporus, when bearing holder (housing, cover) 8 is tightened on the roll extrusion axle 7, adjusting pad 9 is used to adjust the step surface of spending blue cover 11 and the gap between the thrust ball bearing 10, and Hua Lan cover 11 can be rotated neatly around roll extrusion axle 7.
(4) endoporus of Hua Lan cover 11 cooperates with the crest clearance of roll extrusion axle 7 left ends, and the step plane that Hua Lan overlaps 11 right-hand members contacts with thrust ball bearing 10, makes Hua Lan cover 11 after bearing axial force, still can freedom and flexibility rotate.Hua Lan overlaps several rectangular channels that evenly distribute on the conical surface of 11 left ends, is used to lay rolling with roller 12.The cross section of rectangular channel is made into back taper as shown in Figure 3, and coning angle is α, can prevent that roller 12 from coming off lay roller 12 like this in Hua Lan overlaps 11 inner conic holes after.Roller 12 can select for use the standard rolling bearing steel needle roller through hardening to substitute, and also can make of high-speed steel or Hardmetal materials.The quantity of roller 12 is determined according to the size that is rolled the aperture, is generally 3～6.
(5) rolling process principle: in cone sealing pipe joint taper hole rolling processing, the roller 12 of rolling head is done screw type rolling on the top layer of processed cone-shaped wall along circumference, and to processed hole wall apply certain axially and radial pressure, the workpiece endoporus is under the roll extrusion power effect of roller 12, and its top layer metal produces strain and plastic deformation.Plastic deformation had both made the shape of part surface to be machined change, its institutional framework and physical property are changed, the unevenness crest and the trough of surface of the work are pressed and are filled and led up, thereby surface roughness value and the machining accuracy that has improved workpiece have been reduced, produced shearing slip, distortion, elongation, reach fibrillatable by the lattice of roll extrusion layer metal, make tissue become tight, crystal grain attenuates, grain shape is also extended along the maximum direction of distortion, in metal surface, produce simultaneously compression stress, strengthened in the metal surface, improve the intensity and the hardness on top layer.
By experiment as can be known, modes such as the preparation of surfaces roughness of workpiece endoporus and residual and duplicating can influence the inner bore surface roughness after the rolling and processing, and Fig. 8 is that material is the relation curve of SUS316 stainless steel joint for pipeline workpiece taper hole rolling processing front and rear surfaces roughness.From this relation curve as can be seen: along with reducing of roll extrusion front surface roughness value, the surface roughness value after the roll extrusion also reduces.When the preparation of surfaces roughness was Ra6.3, the surface roughness after rolling and processing got final product≤Ra0.4.
Claims (4)
1. high-precision elastic tapered bore rolling device of cone sealing pipe joint, it is characterized in that: described device comprises toolholder body (1), outer sliding sleeve (3), core retainer plate (5) and rolling head; Toolholder body (1) one end is a Morse taper shank, and the endoporus of the other end that toolholder body (1) is cylinder-shaped and core retainer plate (5) external diameter are slidingly matched, and toolholder body (1) is connected by the alignment pin (4) that is through core retainer plate (5) middle part kidney slot with core retainer plate (5); Place rectangular pressure spring (2) in the hole of core retainer plate (5) one ends, make core retainer plate (5) have certain spring preload pressure, when core retainer plate in the work (5) is subjected to bigger axial force, can indentation in toolholder body (1); Outer sliding sleeve (3) is connected with core retainer plate (5) another side by the internal thread of an end, follows core retainer plate (5) during work and slides on toolholder body (1) external diameter, prevents that alignment pin (4) from coming off and the dust dirt enters the surface that is slidingly matched; Rolling head is by roll extrusion axle (7), bearing holder (housing, cover) (8), thrust ball bearing (10), adjusting pad (9), Hua Lan cover (11) and roller (12) are formed, the external diameter face of cylinder B of roll extrusion axle (7) right-hand member is installed in the installing hole of core retainer plate (5), the cylindrical head of roll extrusion axle (7) other end has a cone, the outside dimension of cone and tapering size are according to being determined by the size of roll extrusion inner cone and angle, bearing holder (housing, cover) (8) is connected by the external screw thread of internal thread with roll extrusion axle (7) middle bench, bearing holder (housing, cover) (8) endoporus is equipped with step surface and thrust ball bearing (10) and the adjusting pad (9) of Hua Lantao (11), when bearing holder (housing, cover) (8) is tightened on the roll extrusion axle (7), adjusting pad (9) is used to adjust the step surface of Hua Lantao (11) and the gap between the thrust ball bearing (10), and Hua Lantao (11) can be rotated neatly; Even several rectangular channels that distribute are used to lay rolling roller (12) on the conical surface of Hua Lan cover (11) left end.
2. the described device of claim 1, it is characterized in that: the external diameter face of cylinder B of roll extrusion axle (7) right-hand member is fixed in the installing hole of core retainer plate (5) by holding screw (6), unclamps holding screw (6) and can change the rolling head that meets cone sealing pipe joint taper hole size fast.
3. the described device of claim 1, it is characterized in that: the quantity of roller (12) is 3～6, and the cross section of rectangular channel is made into back taper.
4. the described device of claim 3, it is characterized in that: roller (12) selects for use the standard rolling bearing steel needle roller through hardening to substitute, or makes of high-speed steel or Hardmetal materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010190261405A CN101791756B (en) | 2010-03-02 | 2010-03-02 | High-precision elastic tapered bore rolling device of cone sealing pipe joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010190261405A CN101791756B (en) | 2010-03-02 | 2010-03-02 | High-precision elastic tapered bore rolling device of cone sealing pipe joint |
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| CN101791756A true CN101791756A (en) | 2010-08-04 |
| CN101791756B CN101791756B (en) | 2012-06-20 |
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| CN2010190261405A Expired - Fee Related CN101791756B (en) | 2010-03-02 | 2010-03-02 | High-precision elastic tapered bore rolling device of cone sealing pipe joint |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941132A (en) * | 2010-09-26 | 2011-01-12 | 河北宣化工程机械股份有限公司 | Surface rolling device of inner oil seal groove and outer oil seal groove of power shift transmission piston in construction machinery |
| CN105729042A (en) * | 2016-04-25 | 2016-07-06 | 郭明利 | Portable ultrasonic calendering tool |
| CN106271376A (en) * | 2016-09-22 | 2017-01-04 | 西安理工大学 | A kind of rolling tool and the method carrying out the progressive rolling forming in metal blank surface thereof |
| 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 |
| CN109434659A (en) * | 2018-11-30 | 2019-03-08 | 东风（十堰）汽车锻钢件有限公司 | A kind of novel taper hole roll shaft and polishing machine |
| CN109676405A (en) * | 2018-11-16 | 2019-04-26 | 中国航发西安动力控制科技有限公司 | The adjustable reamer tool apron used on numerical control device |
| CN111702410A (en) * | 2020-06-26 | 2020-09-25 | 西安建筑科技大学 | Surface scale inhibition method for inactive metal material |
| CN113894497A (en) * | 2020-07-06 | 2022-01-07 | 浙江世宝股份有限公司 | Extrusion cutter for machining taper hole of vertical arm of automobile steering device |
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| CN201693329U (en) * | 2010-03-02 | 2011-01-05 | 江苏大学 | Elastic rolling device for high-precision tapered bore of cone-seal pipe joint |
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2010
- 2010-03-02 CN CN2010190261405A patent/CN101791756B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3537163A (en) * | 1968-04-30 | 1970-11-03 | Robert H Steidl | Method of installing a cylindrical element into a cylindrical bore |
| EP1166951A1 (en) * | 2000-06-26 | 2002-01-02 | Fatigue Technology, Inc. | Double flanged bushings and installation methods. |
| WO2007082077A1 (en) * | 2006-01-11 | 2007-07-19 | Fatigue Technology, Inc. | Bushing kits, bearings, and methods of installation |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941132A (en) * | 2010-09-26 | 2011-01-12 | 河北宣化工程机械股份有限公司 | Surface rolling device of inner oil seal groove and outer oil seal groove of power shift transmission piston in construction machinery |
| CN105729042A (en) * | 2016-04-25 | 2016-07-06 | 郭明利 | Portable ultrasonic calendering tool |
| CN106271376A (en) * | 2016-09-22 | 2017-01-04 | 西安理工大学 | A kind of rolling tool and the method carrying out the progressive rolling forming in metal blank surface thereof |
| CN106271376B (en) * | 2016-09-22 | 2019-02-01 | 西安理工大学 | A kind of rolling tool and its method for carrying out the progressive rolling forming in metal blank surface |
| 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 |
| CN109676405A (en) * | 2018-11-16 | 2019-04-26 | 中国航发西安动力控制科技有限公司 | The adjustable reamer tool apron used on numerical control device |
| CN109434659A (en) * | 2018-11-30 | 2019-03-08 | 东风（十堰）汽车锻钢件有限公司 | A kind of novel taper hole roll shaft and polishing machine |
| CN111702410A (en) * | 2020-06-26 | 2020-09-25 | 西安建筑科技大学 | Surface scale inhibition method for inactive metal material |
| CN111702410B (en) * | 2020-06-26 | 2022-04-01 | 西安建筑科技大学 | Surface scale inhibition method for inactive metal material |
| CN113894497A (en) * | 2020-07-06 | 2022-01-07 | 浙江世宝股份有限公司 | Extrusion cutter for machining taper hole of vertical arm of automobile steering device |
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| CN101791756B (en) | 2012-06-20 |
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