CN103611856A - Rolling tool for axial external threads - Google Patents
Rolling tool for axial external threads Download PDFInfo
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- CN103611856A CN103611856A CN201310561719.8A CN201310561719A CN103611856A CN 103611856 A CN103611856 A CN 103611856A CN 201310561719 A CN201310561719 A CN 201310561719A CN 103611856 A CN103611856 A CN 103611856A
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Abstract
The invention relates to a rolling tool for axial external threads. The rolling tool comprises a base and is characterized in that the base comprises a first component, a second component, a lock nut, a rear cover plate, a thread rolling wheel washer, a thread rolling wheel, a rolling pin, an outer fixing cover plate and an Allen screw. The first component comprises an outer splined shaft, a thread size adjusting cover, an outer splined shaft retainer ring, a volute spring and a reset handle. The second component comprises a transmission large gear, a rolling wheel mounting block, a transmission large gear retainer spring, a connecting rod, an eccentric shaft and a transmission small gear. The outer splined shaft of the first component is nested onto splines of the transmission large gear of the second component. The connecting bar penetrating the rear cover plate is fixedly connected through the lock nut. The outer edge of the eccentric shaft is sequentially sleeved with the thread rolling wheel washer, the rolling pin and the thread rolling wheel. The outer fixing cover plate is fixed to the connecting bar through the Allen screw. The rolling tool has the advantages that high thread strength of threaded connectors can be ensured, the surface of the threaded connectors is smooth, and threaded connectors are high in compression resistance and long in service lives.
Description
Technical field
The present invention relates to a kind of machining tool of automobile air brake pipeline thread connecting joint, especially a kind of axial external thread rolling tool.
Background technology
Existing automobile air brake pipe joint is thread connecting joint, and the reliability of this thread connecting joint directly affects the reliability of automobile air brake pipeline.As there is the loosening gas leakage causing of thread connecting joint, the serious brake fade brought out, causes great security incident.So the quality of thread connecting joint is directly connected to driver's safety.The thread connecting joint of traditional processing technology processing is divided into two types, and a kind of is Cutting Process, can be on machine tool or Digit Control Machine Tool by each critical size one-shot forming to guarantee product quality.But defect and deficiency are that the screw strength of cutting generation on thread connecting joint is poor, thread surface is coarse, a little less than the resistance to extrusion capability of screw thread, service life is short.Another kind of traditional handicraft is to cut separately rolled thread diameter, again in the moulding of screw-rolling machine equipment rolled thread, can allow screw strength on thread connecting joint is good, thread surface is smooth, the resistance to extrusion capability of screw thread is strong, long service life, then the remainder of thread connecting joint is holed and cut sealing cone.But defect and deficiency are while needing machining screw jointing remainder, after operation dispersion, rolled thread moulding, also to need, through the positioning and clamping processing conical surface is repeatedly installed, to make external screw thread and conical surface decentraction, directly affect sealing and reliability.
In sum, all there is defect in existing thread connecting joint manufacturing process and equipment, how to guarantee that processed thread connecting joint is can screw strength high, smooth surface, resistance to extrusion capability are strong, long service life, can add man-hour without repeatedly thereby installation location assurance external screw thread and the conical surface are concentric again, to guarantee sealing reliability, become those skilled in the art and want for a long time to solve but unsolved technical barrier.This allow automobile air brake pipe joint research of technique secular stagnation not before.
Therefore, urgent need provides that a kind of accuracy of thread that can guarantee the thread connecting joint process is good, screw strength is high, smooth surface, resistance to extrusion capability are strong, long service life, can add man-hour without thereby location assurance screw thread and conical surface concentricity are repeatedly installed again, thereby guarantee the machining tool of sealing and reliability.
Summary of the invention
The object of this invention is to provide that a kind of screw strength that can guarantee the thread connecting joint process is high, smooth surface, resistance to extrusion capability are strong, long service life, can add man-hour without thereby location assurance screw thread and conical surface concentricity are repeatedly installed, to guarantee the axial external thread rolling tool of sealing and reliability again.
Axial external thread rolling tool basic conception of the present invention is:
Whole instrument of the present invention forms two basic modules by parts, then by other parts by two assemblies in conjunction with formation.The assembling of the first assembly: be first male splined shaft to be packed in thread size adjustable cap hole by view direction, then male splined shaft jump ring snapped in the jump-ring slot of male splined shaft; Being an assembly can not come off.Pagoda-shaped spring small end compressed again and buckle in the external splines root groove of male splined shaft, now Pagoda-shaped spring is compressive state; Fixing by buckling into after the large end turn-knob of Pagoda-shaped spring in thread size adjustable cap hole again; Interior hexagonal tight fixed bolt is installed in top view institute finger-hole, reseting handle is threaded in thread size adjustable cap screw again.The assembling of the second assembly: be first transmission gear wheel to be packed in roller mount pad hole, and transmission gear wheel jump ring is screwed in jump-ring slot; Reach gear radial rotary, axially falling-off effect not; Again connecting rod close-fitting is packed in the hole that roller mount pad is corresponding, eccentric shaft is also packed in the corresponding hole of roller mount pad simultaneously, and drive pinion is packed on the small stair of eccentric shaft rear by direction.Then, the spline of the first assembly is inserted in the spline of the second assembly, connecting rod is aimed at and is adjusted shape hole simultaneously; Back shroud is packed on assembly connecting rod, and tightened with locking nut; Cylindrical die roll packing ring is inserted in to assembly eccentric shaft; Again cylindrical die roll is packed on eccentric shaft in order.Again needle roller is installed to position between cylindrical die roll and eccentric shaft; Again outer securing cover plate buckled on the cylinder of assembly and with soket head cap screw, tighten fixing.
The first assembly function of the present invention is mainly realized axially and radical elasticity by Pagoda-shaped spring, for example: male splined shaft fixed static is motionless, overcomes spring pressure by thread size adjustable cap is outwards stressed, until left-hand thread groove departs from jump ring, is greatest limit; Thread size adjustable cap displacement 30 can be spent by the torsion of Pagoda-shaped spring.The present invention's the second assembly function is synchronously rotated by 3 pinions of transmission gear wheel transmission, and pinion and eccentric shaft are on same axial line.Because the eccentric shaft mounting hole of roller mount pad has lead angle angle, thus eccentric shaft install after counter roller mount pad there is lead angle angle; The function of assembly of the present invention is mainly comprised of the first assembly and the second assembly, and cylindrical die roll specification is by machining screw selection of dimension; Cylindrical die roll cusp distance is by machining screw pitch dimension, and three wheels are pressed respectively end face to tooth apart from 1/3 size assembled in sequence.Treat the roll extrusion state debugging pitch diameter of thread, by M18X1.5-6g debugging roller size, holding screw is exchanged and roller size can be fixed, and its standard external can be screwed in.When put in place-3mm of rolling tools processing length, transfixion simultaneously product to be processed is still prolonged helix screw-in, during screw-in, assembly two assemblies is pulled out to 3mm; Make it rotate 30 °, during rotation, drive pinion rotation; Pinion and eccentric shaft are at same axial line; Eccentric position changes and makes to depart from size and be greater than thread size, resets handle is pushed into initial position.
Use operating procedure of the present invention is: 1, this technological requirement rolling screw-threads cutter must be from the initiating terminal of workpiece, and with the feed speed that sets in one end feed of preprepared blank until the anterior effective thread helical pitch of cylindrical die roll is well engaged to the end-beveling of blank.2 once after cylindrical die roll front end and blank chamfering work piece partly mesh, cutter head will be fed to the reach of setting by automatic axial along workpiece.3, the axial feed release of cutter head locked when the screw thread terminal to be processed, meanwhile the mechanical device that pulls open of cutter head inside is activated and cutter head is opened, thereby make cylindrical die roll depart from manufactured screw thread completely, at this moment cutter head just can withdraw to the initial position of processing and prepare next procedure of processing.4, use next time front hand grip to reset to initial position.Because cutter head has the performance of auto-feed, it had both been suitable for not having the lathe of feed control device so, was also suitable for drive screw formula or slide block controllable type CNC lathe.
The feature of rolling tools of the present invention: 1, axial rolled thread instrument is in the feature of the aspects such as high efficiency and time conservation, high energy high yield and lathe versatility.2, processing characteristics makes its working (machining) efficiency exceed up to 4～12 times more than than in the past traditional cutting type screw thread processing.For lathe, high-revolving requirement is that machine tool and the cam machine institute of old-fashioned slow-speed of revolution screw chasing processing is irreplaceable for it.Now along with being widely used of high rotating speed main shaft and Digit Control Machine Tool that can precision programming, particularly for the minor diameter screw thread application scenario of using original poor efficiency and the processing of low precision single-point type.3, precision can up to .0001, " programming (.001mm) can guarantee that workpiece is carrying out the accurate cylindrical of rolling screw-threads first being processed, and this just provides extraordinary basis for machining high-precision (very close-fitting tolerance).
The present invention is with regard to prior art, axially external thread rolling tool (three-wheel centering rolled thread screw thread) can guarantee that perpendicularity, axiality (concentricity) and the roughness grade number of workpiece are high, guaranteed the precision of position degree and the part of each machined surface, and can in a procedure, complete continuously, without dispersion step, repeat to install location.Processing the resistance to extrusion capability of screw thread strong, precision is high, the part good sealing effect of processing, long service life.Having solved those skilled in the art for a long time wants to solve and unsolved technical barrier.
Specifically, axial external thread rolling tool of the present invention, there is matrix, it is characterized in that described matrix comprises the first assembly, the second assembly, locking nut, back shroud, cylindrical die roll packing ring, cylindrical die roll, needle roller, outer securing cover plate and soket head cap screw, described the first assembly has male splined shaft, thread size adjustable cap, male splined shaft jump ring, Pagoda-shaped spring and reseting handle, one end of described male splined shaft is fixedly connected with male splined shaft jump ring through thread size adjustable cap, described Pagoda-shaped spring is compression turn-knob shape and buckles in thread size adjustable cap fixing, described reseting handle is fixedly mounted on thread size adjustable cap outside, described the second assembly has transmission gear wheel, roller mount pad, transmission gear wheel jump ring, connecting rod, eccentric shaft and drive pinion, described transmission gear wheel is fixed in the hole of roller mount pad by transmission gear wheel jump ring, described connecting rod is positioned at the hole that roller mount pad is corresponding and closely cooperates, described eccentric shaft is positioned at the corresponding hole of roller mount pad, and described drive pinion is positioned on the small stair of eccentric shaft one end, the male splined shaft of described the first assembly is nested in the spline of transmission gear wheel of the second assembly, described connecting rod is fixedly connected with by locking nut through back shroud, described eccentric shaft outer rim is equipped with cylindrical die roll packing ring, needle roller and cylindrical die roll successively, and described outer securing cover plate is fixed on connecting rod by soket head cap screw.In order better to guarantee accurate to dimension, on described thread size adjustable cap, can there is pitch diameter of thread size fine setting hole, the interior hexagonal tight fixed bolt that closely cooperated in described pitch diameter of thread size fine setting hole, for carrying out the fine setting of pitch diameter of thread size.
Compared with the aforementioned existing similar products, screw strength that axial external thread rolling tool of the present invention can guarantee thread connecting joint is high, smooth surface, resistance to extrusion capability are strong, long service life, can add man-hour without repeatedly thereby installation location assurance screw thread and the conical surface are concentric again, thereby assurance sealing reliability, has solved those skilled in the art and has wanted for a long time to solve but unsolved technical barrier.
Content of the present invention is further described with the following Examples, but content of the present invention is not limited only to content related in embodiment.
Accompanying drawing explanation
Fig. 1 is that embodiment axis is to the detailed schematic diagram of part of external thread rolling tool.
Fig. 2 is that embodiment axis is treated roll extrusion view to external thread rolling tool.
Fig. 3 is embodiment axis to view after external thread rolling tool roll extrusion.
Fig. 4 is that embodiment axis is to the explosive decomposition figure of external thread rolling tool.
Fig. 5 is that embodiment axis is to the first assembly original state schematic diagram of external thread rolling tool.
Fig. 6 view after to be embodiment axis use to the first assembly of external thread rolling tool.
The specific embodiment
Embodiment 1: as shown in Fig. 1～6, axial external thread rolling tool described in the present embodiment, there is matrix, it is characterized in that described matrix comprises the first assembly, the second assembly, locking nut 1, back shroud 2, cylindrical die roll packing ring 3, cylindrical die roll 4, needle roller 5, outer securing cover plate 6 and soket head cap screw 7, described the first assembly has male splined shaft 8, thread size adjustable cap 9, male splined shaft jump ring 10, Pagoda-shaped spring 11 and reseting handle 12, one end of described male splined shaft is fixedly connected with male splined shaft jump ring through thread size adjustable cap, described Pagoda-shaped spring is compression turn-knob shape and buckles in thread size adjustable cap fixing, described reseting handle is fixedly mounted on thread size adjustable cap outside, described the second assembly has transmission gear wheel 13, roller mount pad 14, transmission gear wheel jump ring 15, connecting rod 16, eccentric shaft 17 and drive pinion 18, described transmission gear wheel is fixed in the hole of roller mount pad by transmission gear wheel jump ring, described connecting rod is positioned at the hole that roller mount pad is corresponding and closely cooperates, described eccentric shaft is positioned at the corresponding hole of roller mount pad, and described drive pinion is positioned on the small stair of eccentric shaft one end, the male splined shaft of described the first assembly is nested in the spline of transmission gear wheel of the second assembly, described connecting rod is fixedly connected with by locking nut through back shroud, described eccentric shaft outer rim is equipped with cylindrical die roll packing ring, needle roller and cylindrical die roll successively, and described outer securing cover plate is fixed on connecting rod by soket head cap screw.
On the adjustable cap of thread size described in the present embodiment, have pitch diameter of thread size fine setting hole, interior hexagonal tight fixed bolt 19 has closely cooperated in described pitch diameter of thread size fine setting hole.
Claims (2)
1. an axial external thread rolling tool, there is matrix, it is characterized in that described matrix comprises the first assembly, the second assembly, locking nut, back shroud, cylindrical die roll packing ring, cylindrical die roll, needle roller, outer securing cover plate and soket head cap screw, described the first assembly has male splined shaft, thread size adjustable cap, male splined shaft jump ring, Pagoda-shaped spring and reseting handle, one end of described male splined shaft is fixedly connected with male splined shaft jump ring through thread size adjustable cap, described Pagoda-shaped spring is compression turn-knob shape and buckles in thread size adjustable cap fixing, described reseting handle is fixedly mounted on thread size adjustable cap outside, described the second assembly has transmission gear wheel, roller mount pad, transmission gear wheel jump ring, connecting rod, eccentric shaft and drive pinion, described transmission gear wheel is fixed in the hole of roller mount pad by transmission gear wheel jump ring, described connecting rod is positioned at the hole that roller mount pad is corresponding and closely cooperates, described eccentric shaft is positioned at the corresponding hole of roller mount pad, and described drive pinion is positioned on the small stair of eccentric shaft one end, the male splined shaft of described the first assembly is nested in the spline of transmission gear wheel of the second assembly, described connecting rod is fixedly connected with by locking nut through back shroud, described eccentric shaft outer rim is equipped with cylindrical die roll packing ring, needle roller and cylindrical die roll successively, and described outer securing cover plate is fixed on connecting rod by soket head cap screw.
2. axial external thread rolling tool as claimed in claim 1, is characterized in that having pitch diameter of thread size fine setting hole on described thread size adjustable cap, and interior hexagonal tight fixed bolt has closely cooperated in described pitch diameter of thread size fine setting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310561719.8A CN103611856A (en) | 2013-11-13 | 2013-11-13 | Rolling tool for axial external threads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310561719.8A CN103611856A (en) | 2013-11-13 | 2013-11-13 | Rolling tool for axial external threads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103611856A true CN103611856A (en) | 2014-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310561719.8A Pending CN103611856A (en) | 2013-11-13 | 2013-11-13 | Rolling tool for axial external threads |
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| Country | Link |
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| CN (1) | CN103611856A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109201980A (en) * | 2018-09-18 | 2019-01-15 | 中国航空制造技术研究院 | A kind of subregion application method of cylindrical die roll |
| CN113967708A (en) * | 2021-11-26 | 2022-01-25 | 广东欧亚包装有限公司 | ROPP screw device |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB705754A (en) * | 1951-06-21 | 1954-03-17 | Hans Kruse | Improvements in screw thread rolling devices |
| US2909087A (en) * | 1956-10-17 | 1959-10-20 | Nat Acme Co | Threading implement |
| US3196650A (en) * | 1961-06-14 | 1965-07-27 | Wilhelm Fette Prazisionswerkze | Self-opening thread rolling head |
| US3236081A (en) * | 1961-06-14 | 1966-02-22 | Wilhelm Fette Prazisionswerkze | Self-opening thread rolling head |
| SU940968A1 (en) * | 1980-11-14 | 1982-07-07 | Севастопольский Приборостроительный Институт | Apparatus for rolling thread on taps |
| GB2107233A (en) * | 1981-10-14 | 1983-04-27 | Radivoje Petrovic | Thread rolling heads |
| CN2399141Y (en) * | 1999-12-09 | 2000-10-04 | 胡海涛 | Circular steel, ribbed reinforced bar screw rolling appts. |
| CN1362899A (en) * | 2000-03-10 | 2002-08-07 | C·J·温特机械技术公司 | Thread-rolling end-working attachment |
| EP2014389A1 (en) * | 2007-07-07 | 2009-01-14 | Fette GmbH | Radial rolling head |
| CN201760544U (en) * | 2010-08-19 | 2011-03-16 | 高士平 | Twisting machine for forming straight screw threads on steel bars |
| CN203526427U (en) * | 2013-11-13 | 2014-04-09 | 四川柯世达汽车制动系统集团有限公司 | Axial external thread rolling tool |
-
2013
- 2013-11-13 CN CN201310561719.8A patent/CN103611856A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB705754A (en) * | 1951-06-21 | 1954-03-17 | Hans Kruse | Improvements in screw thread rolling devices |
| US2909087A (en) * | 1956-10-17 | 1959-10-20 | Nat Acme Co | Threading implement |
| US3196650A (en) * | 1961-06-14 | 1965-07-27 | Wilhelm Fette Prazisionswerkze | Self-opening thread rolling head |
| US3236081A (en) * | 1961-06-14 | 1966-02-22 | Wilhelm Fette Prazisionswerkze | Self-opening thread rolling head |
| SU940968A1 (en) * | 1980-11-14 | 1982-07-07 | Севастопольский Приборостроительный Институт | Apparatus for rolling thread on taps |
| GB2107233A (en) * | 1981-10-14 | 1983-04-27 | Radivoje Petrovic | Thread rolling heads |
| CN2399141Y (en) * | 1999-12-09 | 2000-10-04 | 胡海涛 | Circular steel, ribbed reinforced bar screw rolling appts. |
| CN1362899A (en) * | 2000-03-10 | 2002-08-07 | C·J·温特机械技术公司 | Thread-rolling end-working attachment |
| EP2014389A1 (en) * | 2007-07-07 | 2009-01-14 | Fette GmbH | Radial rolling head |
| CN201760544U (en) * | 2010-08-19 | 2011-03-16 | 高士平 | Twisting machine for forming straight screw threads on steel bars |
| CN203526427U (en) * | 2013-11-13 | 2014-04-09 | 四川柯世达汽车制动系统集团有限公司 | Axial external thread rolling tool |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109201980A (en) * | 2018-09-18 | 2019-01-15 | 中国航空制造技术研究院 | A kind of subregion application method of cylindrical die roll |
| CN113967708A (en) * | 2021-11-26 | 2022-01-25 | 广东欧亚包装有限公司 | ROPP screw device |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140305 |