CN102688921A - Roller brush molding pipe thread cutting machine and method for manufacturing thread - Google Patents
Roller brush molding pipe thread cutting machine and method for manufacturing thread Download PDFInfo
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- CN102688921A CN102688921A CN2012102103130A CN201210210313A CN102688921A CN 102688921 A CN102688921 A CN 102688921A CN 2012102103130 A CN2012102103130 A CN 2012102103130A CN 201210210313 A CN201210210313 A CN 201210210313A CN 102688921 A CN102688921 A CN 102688921A
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Abstract
Due to teeth of an internal roller brush wheel and an external roller brush wheel under the preset pressure of a spring, a tube wall is bent and deformed and simultaneously is driven to rotate by the rotation of the internal roller brush wheel and the external roller brush wheel, the tube wall can generate heat due to the friction of the rotation line speed difference of the internal roller brush wheel and the external roller brush wheel, so that the strength of the material is lowered; the material can generate rebound fatigue due to continuous rolling brush of the internal roller brush wheel and the external roller brush wheel, so that along with gradual decreasing of the rebound deform performance of the tube wall material, the teeth of the roller brush wheel are gradually pressed into the tube wall under the preset pressure, the tube wall is molded and deformed according to the teeth of the internal roller brush wheel and the external roller brush wheel, so as to form cylinder tube threads or internal and external threads of a conic tube. The machine has the characteristic that the molded thread is low in stress, so that the middle wall of the tube can be molded with threads, and the problem of stress corrosion of stainless steel in rolling threads can be solved, furthermore, the middle wall pipeline connected with the threads molded by the machine can be used for replacing the high pressure endured by the thickened tube wall of the molded threads through cutting, the defect that the source nipple loosens and leaks due to stress concentration formed by grooves of cutting threads can be overcome, so that the source nipple can be as rigid as the tube body, and ideal stainless steel thread connection pipelines are provided for tubes of high pressure and middle pressure, particularly the fire control high pressure water mist fire extinguishing system (with the pipeline work pressure of 16MPa).
Description
Technical field
Patent of the present invention relates to the equipment and the screw-tjread system making method of thread forming of the pipe of the thin-walled of a kind of manufacturing of pipe connecting thread, particularly stainless steel, middle heavy wall pipe and less caliber.
Background technology
It is most convenient, most effective medium transport method that pipeline is carried, and pipe will connect just can become pipeline, so the quality of connection of pipe has determined the security reliability that pipeline is carried.At present, it is to connect mode the most fast and easily that the hickey that middle small-bore pipeline adopts connects, but in the thin-walled, middle heavy wall pipe because the wall thickness surplus is too little, so can not take the method for traditional screw cutting ditch Slot shaping screw thread.These pipelines adopt the clamp-press type connected mode at present, because connection reliability is too low, so can not be fit to the use of mesohigh pipeline.Though the intensity that is welded to connect interface can reach the intensity of body; But the specification requirement of operation is high, difficulty of construction is big, is difficult to guarantee the quality of welding junction, especially stainless steel pipes; Because field Welding is difficult to carry out gas, so can make stainless steel produce intercrystalline corrosion.Therefore, developing mesospore, the reliable connected mode of sheet-metal duct switching performance, satisfy the needs of middle and high pressure pipeline, is the needs of development pipe technology.
Summary of the invention
The objective of the invention is the pipe for middle wall thickness, especially the stainless steel pipe provides a kind of moulding screw thread stress low, can not cause the intensity of stress corrosion and connecting interface can reach the moulding gas thread equipment and the screw-tjread system making method thereof of body intensity to stainless steel.
Abrasive tumbling moulding pipe thread cutting machine of the present invention, its thread forming method is: pipe drives down in the rotation of inside and outside roller and follows rotation, and the tooth form of outer abrasive tumbling wheel that is located at the interior abrasive tumbling wheel of tube wall simultaneously and is located at outer wall is under the pressure that spring is scheduled to; When making the tube wall of pipe bear flexural deformation stress, its tube wall can be through the continuous abrasive tumbling of inside and outside abrasive tumbling wheel, and it is tired to make material that bounce-back takes place; Decline gradually along with material rebound deformation ability; Lose the ability of rebound deformation, the tooth form that makes the abrasive tumbling wheel is pressed into tube wall gradually under the predetermined pressure of spring; Make tube wall produce plastic deformation, become interior or external screw thread with lead angle by the tooth form of abrasive tumbling wheel; Its tube wall also can produce heat under the friction of inside and outside abrasive tumbling wheel rotation linear speed difference; Make the strength of materials descend; Decline gradually along with material rebound deformation ability; Make the arrow type of abrasive tumbling wheel under the predetermined pressure of spring, be pressed into tube wall gradually, make tube wall produce plastic deformation, become interior or outer gas thread with lead angle by the tooth form of abrasive tumbling wheel.This intensity of utilizing metal material can raise and descends and utilize metal material along with the tired method that the physical property moulding screw thread of permanent deformation can take place of bounce-back along with temperature; Not only greatly reduce the stress of pipe plastic deformation moulding screw thread; The pipe that makes mesospore is moulding screw thread easily also, but also has solved the stress corrosion that stainless steel causes greatly because of distortional stress.This equipment also utilizes inside and outside abrasive tumbling rotation linear speed difference to form friction torque; Create the novel mounting and dismounting method that the abrasive tumbling wheel is threaded with interior rotating shaft in can being wrenched or unscrewing through turning to of equipment; When making equipment work; Interior abrasive tumbling wheel can not influence the quality of moulding screw thread because of returning pine, also can take turns from the equipment method for dismounting with interior abrasive tumbling through pipe simultaneously, solves the pipe problem that withdraws from behind the three abrasive tumbling wheel shaping screw thread equipment abrasive tumbling conical tube external screw threads.And; This equipment also created when interior abrasive tumbling wheel be when being connected with interior rotating shaft with external screw thread in abrasive tumbling to take turns connecting thread that the left side is connected with interior rotating shaft be that abrasive tumbling tooth form screw thread with the right is the structure at same lead line; When interior abrasive tumbling wheel is when being connected with interior rotating shaft with internal thread; The projection of lead of screw line on shaft centre line of its internal and external screw thread is overlapping, has solved the interior abrasive tumbling wheel that changes the outfit and can not cause the tooth form problem of misalignment between the inside and outside abrasive tumbling wheel.And; Three abrasive tumbling moulding gas thread equipment are owing to be enclosed within the interior abrasive tumbling wheel of pipe endoporus and tie up under the operating mode of the outer dynamic balance that active force equates, force direction is opposite of outer abrasive tumbling pinch roller of symmetry and work; So the problem that can not occur fractureing because of discontinuity makes the also plastic gas thread of mesospore pipe and small-bore pipe.When this equipment of employing abrasive tumbling thin-wall pipe shaping gas thread; Because the pressure that interior abrasive tumbling wheel bears the moulding gas thread is less; So can the lower rotary shaft cover be locked together with stand; Order has the outer abrasive tumbling wheel of going up of the face of cylinder and interior abrasive tumbling is taken turns rising or decline through the pipe tail end, and abrasive tumbling goes out in the conical tube or external screw thread, and this method essence is two abrasive tumbling wheel shaping gas thread manufacturing approaches.
Description of drawings
Fig. 1, three abrasive tumbling wheel shaping gas thread sketch mapes
1, pipe; 2, interior abrasive tumbling wheel; 3, hydraulic cylinder; 4, press rods; 5, spring; 6, spring stress plate; 7, go up the rotating shaft cover; 8, link; 9, lower rotary shaft cover; 10, go up locating shaft; 11, following locating shaft; 12, interior rotating shaft cover; 13, stand; 14, go up outer abrasive tumbling wheel; 15, down outer abrasive tumbling wheel; 16, interior rotating shaft; 17, wheel is vowed in interior rotating shaft; 18, go up rotating shaft; 19, go up rotating shaft and vow wheel; 20, lower rotary shaft; 21, lower rotary shaft is vowed wheel; 22, bearing support; 23, pipe direction of rotation
Fig. 2, three abrasive tumbling wheel shaping conical tube external screw thread sketch mapes
16, interior rotating shaft; 24, go up outer abrasive tumbling wheel; 25, down outer abrasive tumbling wheel; 26, interior abrasive tumbling wheel; 27, the pipe that has the outer cone port; 28, pipe direction of rotation
Fig. 3, two abrasive tumbling wheel shaping gas thread sketch mapes
1, pipe; 2, interior abrasive tumbling wheel; 9, lower rotary shaft cover; 13, stand; 14, abrasive tumbling is taken turns up and down; 22, bearing support
The specific embodiment
Three abrasive tumbling wheel shaping gas pipe thread method (see figure 1)s
Pipe 1 is inserted in external diameter than on the slightly little interior abrasive tumbling wheel 2 of pipe 1 internal diameter, operation hydraulic cylinder 3, moving down of press rods 4 makes spring 5 with the downward holddown spring stressed plate 6 of predetermined pressure.Because spring stress plate 6 fuses with last rotating shaft cover 7; Hydraulic cylinder 3 connects together through link 8 and lower rotary shaft cover 9; And last lower rotary shaft cover 7,9 can above respectively locating shaft 10 and following locating shaft 11 swing up and down for the center of circle; Locating shaft 10,11 fuses with interior rotating shaft cover 12 respectively up and down, and interior rotating shaft cover 12 fuses with stand 13, so when press rods 4 work downwards; Go up the end that outer abrasive tumbling wheel 14 and down outer abrasive tumbling wheel are 15 identical with active force, predetermined pressure that force direction is opposite compresses pipe 1, make its tube wall abrasive tumbling outside upper and lower take turns 14,15 and interior abrasive tumbling take turns the diastrophic stress of generation under 2 the tooth form pressure.At this moment; Through rotating shaft 16 rotations in the external force order; Because interior rotating shaft 16 vows that with interior rotating shaft wheel 17, interior abrasive tumbling wheel 2 fuse, last rotating shaft 18 vows wheel 19 with last rotating shaft, go up outer abrasive tumbling wheel 14 fuses, and lower rotary shaft 20 and lower rotary shaft vow that wheel 21, following outer abrasive tumbling take turns 15 and fuse; Make upper and lower outer abrasive tumbling wheel 14,15 outside dimensions vow that with interior rotating shaft the product of the arrow number of wheel 17 all vows that greater than upper and lower rotating shaft wheel 19,21 takes turns the product of 2 outside dimensions respectively with interior abrasive tumbling respectively; The rotation linear speed that makes upper and lower outer abrasive tumbling wheel 14,15 is all greater than the rotation linear speed of interior abrasive tumbling wheel 2, and for example: it is 20mm that interior abrasive tumbling is taken turns 2 external diameters, and interior rotating shaft vows that the arrow number of wheel 17 is 35; The external diameter of upper and lower outer abrasive tumbling wheel 14,15 is 190mm; The arrow number of upper and lower rotating shaft arrow wheel 19,21 is 35, the rotating speed rotation of changeing with per minute 80 when interior rotating shaft 16 so, and the rotation linear speed of then interior abrasive tumbling wheel 2 is about 83mm/ second; The rotation linear speed of upper and lower outer abrasive tumbling wheel 14,15 is about 795mm/ second, the fast 712mm of rotation linear speed per second of abrasive tumbling wheel 2 in the rotational line speed ratio of so upper and lower outer abrasive tumbling wheel 14,15.At this moment pipe 1 is under the drive of interior abrasive tumbling wheel 2 and 14,15 rotations of upper and lower outer abrasive tumbling wheel, and when following rotation, the tube wall of its end is the generation heat under the friction of abrasive tumbling wheel rotation linear speed difference; Along with continuous rotation, the temperature of pipe raises gradually; The strength of materials descends gradually, and along with pipe wall material rebound deformation ability descends gradually, abrasive tumbling wheel tooth form can be under the predetermined pressure of spring; Be pressed into the end tube wall of pipe 1 gradually; Make tube wall produce plastic deformation, so this equipment can make pipe bear under the less flexural deformation stress, become interior or external screw thread with lead angle by the tooth form of abrasive tumbling wheel.The arrestment rotation makes press rods 4 rise, and after upper and lower outer abrasive tumbling wheel 14,15 moves apart pipe 1, withdraws from pipe 1, accomplishes the making of abrasive tumbling gas thread.When in the abrasive tumbling during straight pipe thread, the pipe 1 and the horizontal equilibrium of abrasive tumbling wheel 2 by above operation sequence, just can be accomplished the manufacturing of straight pipe thread again in order was inserted in; When abrasive tumbling conical tube internal thread, can be after above program be accomplished the abrasive tumbling straight pipe thread, through unlifting pressure bar 4; After making upper and lower outer abrasive tumbling wheel 14,15 move apart pipe 1; Lower rotary shaft cover 9 is locked together with frame 13, ascending branch bolster 22 makes pipe 1 and horizontal sextant angle be a bit larger tham 1 degree 47 minutes, makes press rods 4 move down again again; Because lower rotary shaft cover 9 is pinned by stand 13; So have only go up outer abrasive tumbling wheel 14 and interior abrasive tumbling take turns 2 act on pipe 1 the end, through abrasive tumbling, with the straight pipe thread of own moulding again the abrasive tumbling enlarging become joint with 1: 16 conical tube internal thread; When the male connection of abrasive tumbling conical tube, upper and lower outer abrasive tumbling wheel 14,15 is changed upper and lower outer abrasive tumbling wheel 24,25 (see figure 2)s with conicity, the interior abrasive tumbling wheel 26 that will have conicity is put in the pipe 27 with outer cone port in advance; The internal thread of rotating shaft 16 in screwing in again; Make pipe 27 and horizontal equilibrium, through the program of above abrasive tumbling screw thread, the port abrasive tumbling of pipe 27 gone out the conical tube external screw thread after; Again through counter-rotating pipe direction of rotation 28; Utilize the speed discrepancy that revolves between upper and lower outer abrasive tumbling wheel 24,25 and the interior abrasive tumbling wheel 26, the friction torque of generation just can return being threaded between the abrasive tumbling wheel 26 and interior rotating shaft 16 in the pine, then pipe 27 is taken turns 26 after the equipment taking-up together with interior abrasive tumbling; Again the other end of interior abrasive tumbling wheel 26 from pipe 27 taken out, just can accomplish the externally threaded making of conical tube.This equipment is because interior abrasive tumbling wheel is work under the external force balance condition that active force equates, force direction is opposite that abrasive tumbling is taken turns outside bearing up and down; The problem that therefore can not occur fractureing because of unbalance stress is so be particularly suitable for the gas thread of less caliber of abrasive tumbling and thicker tube wall.When this equipment of employing abrasive tumbling thin-wall pipe shaping gas thread, because the stress of moulding gas thread is less, interior abrasive tumbling wheel is difficult for fractureing; Therefore can lower rotary shaft be overlapped 9 locks together with stand 13; Make three abrasive tumbling wheel shaping pipe thread cutting machine essence become two abrasive tumbling wheel shaping rib machines, when adopting two abrasive tumblings wheel abrasive tumbling straight pipe thread, external diameter of abrasive tumbling wheel 2 should be littler than ips in it; The pipe 1 and the horizontal equilibrium of abrasive tumbling wheel 2 in order is inserted in; Through above operation sequence, can abrasive tumbling with pipe 1 abrasive tumbling wheel 14 and interior abrasive tumbling wheel 2 outside last under, produce the straight pipe thread (see figure 3); When adopting two abrasive tumblings wheel abrasive tumbling conical tube internal thread; Through rising support 22; The pipe 1 of abrasive tumbling wheel 2 was a bit larger tham 1 degree 47 minutes with horizontal sextant angle in order was inserted in; Through above operation sequence, can abrasive tumbling with pipe 1 abrasive tumbling wheel 14 and interior abrasive tumbling wheel 2 outside last under, produce conical tube internal thread with 1: 16; When adopting two abrasive tumblings wheel abrasive tumbling conical tube external screw thread; Through moving down bearing support 22; Abrasive tumbling wheel 2 in the pipe 1 that will have an outer cone pipe end is inserted in makes pipe 1 and horizontal sextant angle greater than 1 degree 47 minutes, just can be with pipe outside under the abrasive tumbling of abrasive tumbling wheel 14, interior abrasive tumbling wheel 2; Produce conical tube external screw thread with 1: 16; Order has two abrasive tumbling wheel shaping pipe thread cutting machines of outer abrasive tumbling wheel of going up of the face of cylinder and interior abrasive tumbling wheel for this reason, and through the rising or the decline of pipe tail end, but abrasive tumbling goes out in the conical tube or external screw thread.
When this equipment also can make the tube wall of pipe bear flexural deformation stress; Through the continuous rotation abrasive tumbling tube wall of inside and outside abrasive tumbling wheel to pipe; Make the material production bounce-back tired,, make the tooth form of abrasive tumbling wheel under the predetermined pressure of spring, be pressed into tube wall gradually along with material rebound deformation ability descends gradually; Make tube wall produce permanent deformation, moulding gas thread by the tooth form of abrasive tumbling wheel.It is to adopt external screw thread to be connected with interior rotating shaft that this equipment is taken turns when interior abrasive tumbling, and then its left side should be identical with the pitch of the right abrasive tumbling tooth form with the externally threaded pitch of interior rotating shaft connection, and the screw thread on its both sides is on same lead of screw line.When interior abrasive tumbling wheel is to adopt internal thread to be connected with interior rotating shaft; Then the pitch of its internal thread should be identical with the pitch of abrasive tumbling tooth form; And its both lead line should be on shaft centre line projection overlapping; After the abrasive tumbling wheel screws in interior rotating shaft in can avoiding like this, the screw thread problem of misalignment between the abrasive tumbling wheel.When rolling dextrorotation gas thread, equipment abrasive tumbling pipe direction of rotation 23 should be clockwise, and the interior abrasive tumbling wheel of friction torque order that can produce through the linear speed difference of abrasive tumbling wheel rotation like this is not connected with interior rotating shaft can return pine.When in the needs dismountings during abrasive tumbling wheel, can be through the opposite spin of equipment, through the friction torque of the linear speed difference of rotation between the abrasive tumbling wheel pull abrasive tumbling in the pine take turns with interior rotating shaft between be threaded.Simultaneously; When rolling dextrorotation gas thread; Interior abrasive tumbling wheel tooth form screw thread is dextrorotation; Outer abrasive tumbling wheel tooth form screw thread is left-handed, and the thread pitch of outer abrasive tumbling wheel equals outer shaft and vows that wheel vows that number vows that divided by interior rotating shaft wheel vows that the number of starts of the product of the merchant of number and the pitch of interior abrasive tumbling wheel screw thread, outer abrasive tumbling wheel equals outer shaft and vows that wheel vows that number vows the merchant of wheel arrow number divided by interior rotating shaft, and quotient should be the integer more than 1 or 1.The external diameter of the upper and lower outer abrasive tumbling wheel of this equipment equates, direction of rotation is opposite, and outer shaft vows that the arrow number of wheel equates up and down.Be inversely proportional to according to the stress of this equipment Pipe forming screw thread and the friction temperature of pipe; The temperature of friction and the characteristic that spring predetermined pressure, abrasive tumbling wheel rotation linear speed difference are directly proportional can come abrasive tumbling to go out the gas thread of various wall thickness through the predetermined pressure of adjustment spring, the rotation linear speed difference of abrasive tumbling wheel.Adjustment spring predetermined pressure; Can reach through the operating pressure of adjustment hydraulic cylinder; When adopting screw rod or lever replacement liquid cylinder pressure, can reach through the axial displacement of adjustment screw rod or lever, the rotation linear speed difference of adjustment abrasive tumbling wheel can reach through the rotating speed of rotating shaft in adjusting.
The screw thread of this equipment abrasive tumbling moulding and the tradition moulding screw thread that cuts groove is compared; Not only practiced thrift tube wall and reserved the invalid pipe thickness of screw cutting groove, concentrated the hickey that causes to be drawn the drawback of loose seepage but also eliminated the stress that the screw cutting groove forms; Because the hickey intensity of this device fabrication reaches the intensity of body; So high pressure that adopts the extra strong pipe of the not only alternative employing cutting forming of the mesospore pipe screw thread that is threaded of this device fabrication to bear; But also solved the wall thickness difference that the moulding screw thread that cuts groove causes pipeline; Under the work temperature difference, form that the temperature difference is amplified axial stress and the problem that reduces the security reliability of pipeline.Therefore, this equipment is middle and high pressure pipe, is in particular the pipeline that fire-fighting high-pressure fine water mist fire-extinguishing system (pipeliner's delivered pressure 16MPa) provides desirable stainless steel to be threaded.
The gas thread of this equipment moulding is owing to be a kind of iron-filings moulding screw thread, thus its thread groove diapire thick still with the body consistent wall thickness; Because thread forming is to come moulding gradually through pipe wall material rebound deformation ability drop, so eliminated the excessive internal injury that causes material of stress; Because the sudden change in screw thread slotless hole is concentrated so eliminate the stress of tube wall; Because the intensity of hickey reaches the intensity of body; So eliminated the weak link that joint strengths such as conventional threads interface or clamp-press type are lower than body intensity; The pipeline that makes the gas thread of this equipment moulding connect such as really becomes at strong pipeline, has effectively improved the security reliability of pipeline.
Claims (14)
1. abrasive tumbling wheel, outer abrasive tumbling wheel, interior rotating shaft arrow wheel, outer shaft were vowed wheel, spring in an abrasive tumbling moulding pipe thread cutting machine comprised; Its screw-tjread system making method is characterised in that: the tooth form of inside and outside abrasive tumbling wheel is under the predetermined pressure of spring; When making the tube wall of pipe bear flexural deformation stress, pipe drives down in the rotation of inside and outside abrasive tumbling wheel and follows rotation, and rotates under the abrasive tumbling at inside and outside abrasive tumbling wheel; Along with pipe wall material rebound deformation ability descends gradually; Make the tooth form of abrasive tumbling wheel under the spring predetermined pressure, be pressed into tube wall gradually, make tube wall produce plastic deformation, become interior or external pipe thread with lead angle by the tooth form of abrasive tumbling wheel.
2. a kind of abrasive tumbling moulding pipe thread cutting machine according to claim 1; It is characterized in that: the Pipe forming gas thread is to rely on tube wall to make material that bounce-back fatigue takes place at the continuous rotation abrasive tumbling of inside and outside abrasive tumbling wheel; Along with material rebound deformation ability descends gradually; Make the tooth form of abrasive tumbling wheel under the spring predetermined pressure, be pressed into tube wall gradually, make tube wall produce plastic deformation by the tooth form of abrasive tumbling wheel.
3. a kind of abrasive tumbling moulding pipe thread cutting machine according to claim 1; It is characterized in that: the Pipe forming gas thread is to rely on tube wall under the friction of inside and outside abrasive tumbling wheel rotation linear speed difference, to produce heat; Make the strength of materials descend; Along with pipe wall material rebound deformation ability descends gradually, make the tooth form of abrasive tumbling wheel under the spring predetermined pressure, be pressed into tube wall gradually, make tube wall produce plastic deformation by the tooth form of abrasive tumbling wheel.
4. a kind of abrasive tumbling moulding pipe thread cutting machine according to claim 3; It is characterized in that: outer abrasive tumbling wheel outside dimension and interior rotating shaft arrow are taken turns the product of vowing number and are vowed the product of taking turns the arrow number greater than interior abrasive tumbling wheel outside dimension and outer shaft, and the rotation linear speed of outer abrasive tumbling wheel is greater than the linear speed of interior abrasive tumbling wheel rotation.
5. a kind of abrasive tumbling moulding pipe thread cutting machine according to claim 1; Three abrasive tumbling wheel shaping gas thread manufacturing approaches are arranged; It is characterized in that: the interior abrasive tumbling wheel diameter that is located at the pipe endoporus is slightly smaller than the pipe endoporus, and the pipe cylindrical has a pair of upper and lower outer abrasive tumbling wheel, and this takes turns internal abrasive tumbling wheel active force to abrasive tumbling and equates; Force direction is opposite, pipe with horizontal equilibrium under abrasive tumbling go out straight pipe thread.
6. a kind of abrasive tumbling moulding pipe thread cutting machine according to claim 1; Two abrasive tumbling wheel shaping gas thread manufacturing approaches are arranged; It is characterized in that: the interior abrasive tumbling wheel diameter that is located at the pipe endoporus is littler than pipe endoporus; Having only of the actual abrasive tumbling of pipe gone up outer abrasive tumbling wheel and interior abrasive tumbling wheel, when rolling cylindrical tube internal thread, its pipe and horizontal equilibrium; When lift-over conical tube internal thread, its pipe tail end is higher than the other end that is inserted in interior abrasive tumbling wheel, and pipe and horizontal sextant angle were a bit larger tham 1 degree 47 minutes; When rolling conical tube external screw thread, the pipe that will have the outer cone pipe end is inserted in interior abrasive tumbling wheel, and the pipe tail end is reduced, and makes pipe and horizontal sextant angle be a bit larger tham 1 degree 47 minutes.
7. a kind of abrasive tumbling moulding pipe thread cutting machine according to claim 1; It is characterized in that: when interior abrasive tumbling wheel is when being connected with interior rotating shaft with external screw thread; Screw thread on abrasive tumbling wheel both sides is all on same lead of screw line in it; When interior abrasive tumbling wheel is when being connected with interior rotating shaft with internal thread, the projection of lead of screw line on shaft centre line of its outer internal thread is overlapping.
8. based on the described a kind of abrasive tumbling moulding pipe thread cutting machine of claim 1, it is characterized in that: outer abrasive tumbling wheel is poor with interior abrasive tumbling wheel rotation linear speed, and through the direction of rotation of equipment, the abrasive tumbling wheel obtains to be wrenched or to pull the linear speed difference friction torque of pine in can making.
9. three abrasive tumbling wheel shaping gas thread manufacturing approaches according to claim 5; It is characterized in that: when abrasive tumbling conical tube internal thread; After earlier the pipe end abrasive tumbling being gone out straight pipe thread, again the lower rotary shaft cover is locked together with stand, through the rising of pipe tail end; Make pipe and horizontal sextant angle be a bit larger tham 1 degree 47 minutes, order is gone up outer abrasive tumbling wheel and interior abrasive tumbling and is taken turns to act on and have that the abrasive tumbling enlarging is the conical tube internal thread on the straight pipe thread again.
10. three abrasive tumbling wheel shaping gas thread manufacturing approaches according to claim 5; It is characterized in that: when abrasive tumbling conical tube external screw thread, upper and lower outer abrasive tumbling wheel, interior abrasive tumbling wheel and pipe port all have conicity, and abrasive tumbling wheel is after putting pipe outer cone pipe end in advance in it; Again in pipe screws in interior rotating shaft internal thread; Pipe be with horizontal equilibrium under carry out the abrasive tumbling screw thread, behind abrasive tumbling moulding conical tube external screw thread, the taking-up of pipe is the opposite spin of dependence equipment; Friction torque through abrasive tumbling wheel rotation linear speed difference is pulled abrasive tumbling wheel in the pine, makes pipe take out from equipment with interior abrasive tumbling wheel and accomplishes the externally threaded making of conical tube.
11. a kind of abrasive tumbling moulding pipe thread cutting machine according to claim 1; It is characterized in that: the stress of Pipe forming screw thread and the friction temperature of pipe are inversely proportional to; The temperature of friction is directly proportional with spring predetermined pressure, abrasive tumbling wheel rotation linear speed difference, and the predetermined pressure of spring can be adjusted according to different thicknesss of pipe wall with the rotation linear speed difference of abrasive tumbling wheel.
12. a kind of abrasive tumbling moulding pipe thread cutting machine according to claim 1; It is characterized in that: when rolling dextrorotation gas thread; Interior abrasive tumbling wheel tooth form screw thread is dextrorotation; Outer abrasive tumbling wheel tooth form screw thread is left-handed, and the number of starts of outer abrasive tumbling wheel and pitch equal outer shaft respectively and vows that wheel vows that number vows that divided by interior rotating shaft wheel vows merchant and the merchant of number and the product of the pitch that interior abrasive tumbling is taken turns, and its quotient should be the integer more than 1 or 1.
13. three abrasive tumbling wheel shaping gas thread manufacturing approaches according to claim 5 is characterized in that: the external diameter of upper and lower outer abrasive tumbling wheel equates that direction of rotation is opposite, and upper and lower outer shaft vows that wheel arrow number equates.
14. a kind of abrasive tumbling moulding pipe thread cutting machine according to claim 1 is characterized in that: the thread groove diapire of the gas thread that abrasive tumbling comes out is thick to be consistent with body, and hickey intensity is consistent with body intensity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210210313.0A CN102688921B (en) | 2012-06-25 | 2012-06-25 | A kind of abrasive tumbling formed pipe rib machine and screw-tjread system making method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210210313.0A CN102688921B (en) | 2012-06-25 | 2012-06-25 | A kind of abrasive tumbling formed pipe rib machine and screw-tjread system making method thereof |
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| CN102688921A true CN102688921A (en) | 2012-09-26 |
| CN102688921B CN102688921B (en) | 2015-09-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111942999A (en) * | 2020-09-16 | 2020-11-17 | 郑牧之 | Elevator suitable for old building installs additional |
| CN117388099A (en) * | 2023-12-11 | 2024-01-12 | 常州市华伟医疗用品有限公司 | Drug resistance testing device of syringe piston head |
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