CN202894158U - Deformation control mechanism for pipe thread rolling with two-wheeled thread roller - Google Patents
Deformation control mechanism for pipe thread rolling with two-wheeled thread roller Download PDFInfo
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- CN202894158U CN202894158U CN 201220578643 CN201220578643U CN202894158U CN 202894158 U CN202894158 U CN 202894158U CN 201220578643 CN201220578643 CN 201220578643 CN 201220578643 U CN201220578643 U CN 201220578643U CN 202894158 U CN202894158 U CN 202894158U
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- pipe
- thread
- rolling
- wheeled
- aluminum pipe
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Abstract
The utility model relates to a deformation control mechanism for pipe thread rolling with a two-wheeled thread roller. When the two-wheeled thread roller is used for rolling 11-tooth/inch 55-degree cylindrical pipe thread on a 2-inch (G2 inch) aluminum pipe, the inner diameter and the outer diameter of the pipe reduce and are made elliptic. If a rigid core shaft is added to the inner diameter of the pipe, the inner diameter and the outer diameter of the pipe increase and are made elliptic during rolling, and the pipe cannot rotate. According to the technical scheme for overcoming the defect that the two-wheeled thread roller cannot be used for rolling thin-walled pipe threads, auxiliary wheels of the same size are disposed above and below the middle of each of two thread rolling wheels, the auxiliary wheels are consistent with the to-be-rolled aluminum pipe in terms of size and threads, and the rotation directions of the auxiliary wheels and the aluminum pipe are different. The outer diameter phi of the aluminum pipe with 11-tooth/inch 55-degree cylindrical pipe thread rotating leftwards. The upper auxiliary wheels can feed and retreat vertically to restrain the aluminum pipe with correcting deformation, and the lower auxiliary wheels protect the pipe threads from being damaged. A nylon core shaft is added to the inner diameter of the aluminum pipe, when the upper auxiliary wheels is pressurized to feed, the deformed pipe can be rolled to restore qualified size, and accordingly the difficulty that the two-wheeled thread roller cannot roll thin-walled pipe thread is overcome.
Description
One technical field
The utility model is on the common two-wheeled screw-rolling machine of Z28-12.5, during rolling aluminum pipe external screw thread, and a cover mechanism of control aluminum pipe distortion.
Two background technologies
A kind of two inches (G2 ") aluminum pipe, internal diameter Φ 50.8mm.55 ° of straight pipe threads of rolling 11 tooth/inches on external diameter (11/1 "), rolling front aluminum pipe external diameter Φ 58.1mm, it is thin to roll rear thread external diameter Φ 59.6mm tube wall, monolateral thickness 3.65mm, diameter is large, and material is soft.Use Z28-12.5 two-wheeled screw-rolling machine, the cylindrical die roll on two main shafts is through motor, change gear, worm gear transmission, do synchronous, equidirectional revolution, wherein, movable main shaft and cylindrical die roll are under hydraulic drive, do the horizontal direction feed motion, two-wheeled just can shut out the screw thread on the workpiece.But, rolling gas pipe thread, when the rolling of two cylindrical die rolls contact aluminum pipe (workpiece), the aluminum pipe internal-and external diameter dwindles, oval, gross distortion, can not rotate and squeezes bad; Add rigid central spindle for the aluminum pipe internal diameter, during rolling, the expansion of pipe attenuation internal-and external diameter, increase, ellipse become waste product.On the two-wheeled screw-rolling machine, rolling this type of gas thread and other light-wall pipe screw thread, up till now, manque precedent still.Can only use Cutting Process, screw strength is low, efficient is low.Perhaps select the few three roller screw-rolling machines of using of factory.
Three summary of the invention
In order to overcome the defective that existing two-wheeled screw-rolling machine can not rolling gas pipe thread, the utility model solves its technical problem, and the technical scheme of taking is:
1. above two cylindrical die rolls centres of lathe, increase and install auxiliary wheel, large seat, leading screw and bearing bracket stand etc., upper auxiliary wheel is installed on the bearing bracket stand, rotate the leading screw feeding handwheel on the large seat, vertically the pressurize feeding or return of upper auxiliary wheel, the advance and retreat size is read by the pointer scale dish, and the function of upper auxiliary wheel is, with the nylon mandrel that ips is packed into, the common inhibition and correcting deformed aluminum pipe
2. below two cylindrical die roll centres, remove former rolled thread support, a lower auxiliary wheel and wheel seat are installed, lower its function of auxiliary wheel is, holds aluminum pipe, proofreaies and correct the protection screw thread, when upper auxiliary wheel feeding pressurization, can not wear and tear to squeeze and hinder the aluminum pipe form of thread.Rolled thread support on the original-pack machine has then damaged gas pipe thread fully.
The auxiliary wheel size is consistent with parameter up and down, and consistent with institute rolling aluminum pipe external diameter and thread size, only has rotation direction opposite, external diameter Φ 59.6mm, 11 tooth/inches, 55 ° of straight pipe threads, single head, left-handed, lead angle α=0.7246 °; Identical with the cylindrical die roll lead angle of left-handed two head threads.Auxiliary wheel is by the sub-form of thread driven rotary of institute's tube rolling up and down.
3. at the aluminum pipe internal diameter, be slidingly matched
The nylon mandrel of packing into, reach is rolled by length 〉=institute.Its function is: when movable cylindrical die roll horizontal feed, when two-wheeled contact aluminum pipe is rolling, the aluminum pipe internal-and external diameter increases, but the form of thread degree of depth has been rolled to 70%, and along with upper auxiliary wheel vertical feed intensified pressure thread forming, tube outer diameter is dwindled gradually, return back to qualified size, the physical property of nylon mandrel is shunk, is replied aspect the sizing at aluminum pipe, plays a key effect.
The utility model has solved for many years, the difficult problem that the two-wheeled screw-rolling machine can not the rolling thin-wall gas thread, and the light-wall pipe screw thread can only the shaping by stock removal screw thread, and screw strength is low, efficient is low, does not reach the thread standard degree.
Four description of drawings
Below in conjunction with accompanying drawing, the utility model is further specified:
Fig. 1 is the rolling gas pipe thread partial front elevation view of former machine
The fixing cylindrical die roll 6. thin-wall aluminium pipes 7. movable cylindrical die roll 8. movable main shaft 9. activity feeding spindle drums 10 rolled thread carrier bases 11. rolled thread supports of 1. fuselages, 2. lock dogs, 3. fixed main shaft seats, 4. fixed main shafts 5. among the figure
Fig. 2 is the rolled pipe screw thread partial front elevation view (consistent with Fig. 1 sequence number) that adds Deformation control mechanism
The fixing auxiliary wheel 17. bearing blocks 18. handwheels 19. leading screws 20. dials 21. feed screw nut framves on the large seat 16. of 14. times auxiliary wheels of cylindrical die roll 6. thin-wall aluminium pipes, 7. movable cylindrical die roll 8. movable main shaft 9. activity feeding spindle drums, 10 rolled thread carrier base 13. times wheel seats of 11. rolled thread supports, 12. nylon mandrels 15. of 1. fuselages, 2. lock dogs, 3. fixed main shaft seats, 4. fixed main shafts 5. among the figure
Fig. 3 is the aluminum pipe dimensional drawing
Five. the specific embodiment
1. auxiliary wheel 16,14 is adjusted to and two cylindrical die rolls 5,7, axially parallel up and down, and end face is concordant.
2. the rolled threaded part internal diameter of aluminum pipe 6 loaded onto nylon mandrel 12, be placed on external support and above the auxiliary wheel 14.
3. startup lathe, fixed main shaft 4 drives two cylindrical die rolls 5,7 with movable main shaft 8 and does synchronous equidirectional revolution, movable cylindrical die roll 7 and horizontal movement under hydraulic drive, the rolling gas pipe thread, aluminum pipe 6 diameters become large, oval thereupon.
4. rotate the handwheel 18 of large seat 15, upper auxiliary wheel 16 vertical feeds of leading screw 19 drives, inhibition and correcting deformed aluminum pipe 6, aluminum pipe screw thread drive up and down auxiliary wheel 16,14 rotations.Along with upper auxiliary wheel 16 pressure strengthen, aluminum pipe 6 external diameters recover gradually, and when the qualified scale of aluminum pipe 6 diameters of determining was tested in 20 arrival of feeding dial, movable cylindrical die roll 7 and upper auxiliary wheel 16 be rollback simultaneously, finishes aluminum pipe 6 screw thread roll formings.Successively circulation.
With three class precision ring gauges check thread size and thread form.
Claims (2)
1. the rolling gas pipe thread Deformation control of two-wheeled screw-rolling machine mechanism, be assemblied on the former Z28-12.5 two-wheeled screw-rolling machine, it is characterized in that: the upper and lower in the middle of two cylindrical die rolls of former machine, each increases an auxiliary wheel, outside dimension, the screw thread of two auxiliary wheels are consistent, and consistent with rolling aluminum pipe outside dimension and screw thread, only have rotation direction opposite.
2. the rolling gas pipe thread Deformation control of two-wheeled screw-rolling machine according to claim 1 mechanism, it is characterized in that: at the internal diameter of the rolling screw pipe nylon mandrel of packing into, upper auxiliary wheel pressurization feeding can make the rolling qualified size that is returned to of the tube outer diameter of being out of shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220578643 CN202894158U (en) | 2012-11-06 | 2012-11-06 | Deformation control mechanism for pipe thread rolling with two-wheeled thread roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220578643 CN202894158U (en) | 2012-11-06 | 2012-11-06 | Deformation control mechanism for pipe thread rolling with two-wheeled thread roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202894158U true CN202894158U (en) | 2013-04-24 |
Family
ID=48114877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220578643 Expired - Lifetime CN202894158U (en) | 2012-11-06 | 2012-11-06 | Deformation control mechanism for pipe thread rolling with two-wheeled thread roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202894158U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105945370A (en) * | 2016-05-16 | 2016-09-21 | 长兴诺英五金工具有限公司 | Long bolt thread rolling device |
| CN106270319A (en) * | 2016-08-27 | 2017-01-04 | 保定天银机械有限公司 | Conversion pipe fitting external screw thread process equipment moulded by steel |
| CN107570646A (en) * | 2017-08-09 | 2018-01-12 | 宁波市镇海华隆紧固件有限公司 | A kind of bolt thread rolling machine protector |
-
2012
- 2012-11-06 CN CN 201220578643 patent/CN202894158U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105945370A (en) * | 2016-05-16 | 2016-09-21 | 长兴诺英五金工具有限公司 | Long bolt thread rolling device |
| CN106270319A (en) * | 2016-08-27 | 2017-01-04 | 保定天银机械有限公司 | Conversion pipe fitting external screw thread process equipment moulded by steel |
| CN106270319B (en) * | 2016-08-27 | 2018-12-28 | 保定天银机械有限公司 | Steel modeling conversion pipe fitting external screw thread process equipment |
| CN107570646A (en) * | 2017-08-09 | 2018-01-12 | 宁波市镇海华隆紧固件有限公司 | A kind of bolt thread rolling machine protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130424 |
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| CX01 | Expiry of patent term |