CN103567236A - Rotary clamping device for tube blank of cold rolling seamless steel tube - Google Patents
Rotary clamping device for tube blank of cold rolling seamless steel tube Download PDFInfo
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- CN103567236A CN103567236A CN201310594396.2A CN201310594396A CN103567236A CN 103567236 A CN103567236 A CN 103567236A CN 201310594396 A CN201310594396 A CN 201310594396A CN 103567236 A CN103567236 A CN 103567236A
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- rotating shaft
- clamping
- axle sleeve
- cold rolling
- travelling gear
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Abstract
The invention discloses a rotary clamping device for a tube blank of a cold rolling seamless steel tube. The rotary clamping device comprises a hollow rotating shaft, a plurality of claws and claw seats as well as a clamping axle sleeve, wherein a plurality of through holes which are symmetrical relative to the center of a central axis of the rotating shaft are processed in a clamping end of the rotating shaft, and the rotating shaft rotates under driving of a device; the plurality of claws and claw seats are matched and mounted in the through holes in one-to-one correspondence and can move in the radial direction of the clamping end in the through holes, and each claw seat adopts a tapered block; the clamping axle sleeve is mounted at the clamping end and can move in the axial direction of the rotating shaft under the action of a connected driving device; and a plurality of tapered grooves for supporting the plurality of claw seats are formed in one end, close to the clamping end, of the clamping axle sleeve, and relative motion exists between the claw seats and the tapered grooves. The rotary clamping device adopts the clamping axle sleeve, the tapered grooves are formed in the clamping axle sleeve and matched with the claw seats, so that the claws clamp the tube blank, the clamping is reliable, and the rotary clamping device can be used for clamping and rotating cold rolling seamless steel tubes with large diameters.
Description
Technical field
The present invention relates to the production of heavy caliber cold rolling seamless steel, particularly rotation and the clamp mechanism of pipe in the production of heavy caliber cold rolling seamless steel.
Background technology
Along with China's expanding economy, a large amount of heavy caliber cold rolling seamless steel of demand in recent years, a large amount of heavy caliber cold rolling seamless steel of China's annual Ye Yaoxiang state outer vent, so market simultaneously also increases year by year to the demand of large-scale double-roller cold pilger mill.During double-roller cold pilger mill rolling, need a kind of rotation off and on and clamping device to clamp pipe, the current device of realizing intermittent rotary and clamping adopts hand-operated clamping more, production efficiency is lower, and these structures can only be applicable to less cold rolling seamless steel pipe, because external diameter, the quality of heavy caliber cold rolling seamless steel pipe are larger, be difficult for clamping, be difficult for location, and easily get loose while rotating, therefore need rotating clamp more reliably.
Summary of the invention
For problems of the prior art, object of the present invention for a kind of reliable clamping, automatic operation are provided, production efficiency is high and cold rolling seamless steel pipe blank rotary clamping device simple in structure, floor space is little.
For achieving the above object, technical scheme of the present invention is as follows:
A pipe blank rotary clamping device, comprising:
Hollow rotating shaft, is processed with the through hole of a plurality of relatively described spindle central axis centre symmetries on the pinching end of described rotating shaft, described rotating shaft is rotated under a device drives;
A plurality of claws and master jaw, described a plurality of claw coordinates mutually with master jaw, and be arranged on correspondingly in described through hole, described a plurality of claws and master jaw all can be in described through hole along radially the moving of described pinching end, described master jaw is a circular cone;
Clamp axle sleeve, described clamping axle sleeve is arranged on described pinching end, described clamp shaft is enclosed within the effect of a connected drive unit can axially moving along described rotating shaft, described clamping axle sleeve is provided with near one end of described pinching end a plurality of cone tanks that support described a plurality of master jaws, between described master jaw and described cone tank, relative motion can occur.
Further, described master jaw two sides on be provided with recess, on the two sides of described cone tank, be provided with the protuberance matching with the female portion.
Further, also comprise hydraulic cylinder, piston rod, bearing and shell, described bearing holder (housing, cover) is contained between described clamping axle sleeve and described shell and axial restraint, and described shell is connected with described piston rod.
Further, on described piston rod, be also set with the spring of buffering use.
Further, also comprise the support being fixedly installed, described rotating shaft is arranged on described support, the first power transmission shaft and second driving shaft are also installed on described support, on described the first power transmission shaft, the first travelling gear is installed, the second travelling gear and the 3rd travelling gear are installed on described second driving shaft, the 4th travelling gear is installed in described rotating shaft, described the first travelling gear and described the second travelling gear are intermeshing, described the 3rd travelling gear and described the 4th travelling gear are intermeshing, and described hydraulic cylinder is fixedly mounted on described support.
Beneficial effect of the present invention is, the present invention compared with prior art, in the present invention, adopt and clamp axle sleeve, clamp shaft puts cone tank cooperation master jaw is set, when clamp shaft is enclosed within and moves along rotating shaft under the driving of the second drive unit, by cone match, depress master jaw, thereby make claw clamp pipe, this reliable clamping, can be used for the bigbore cold rolling seamless steel of clamping rotation, and first drive unit this device is rotated, the second drive unit makes this device clamp action, overall process realizes automation mechanized operation, production efficiency is very high, and of the present invention simple in structure, compact, floor space is very little, very practical, there is very strong market value.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Fig. 1 is cold rolling seamless steel pipe blank rotary clamping device structural representation of the present invention;
Fig. 2 is along the sectional structure schematic diagram of A-A line in Fig. 1.
The specific embodiment
The exemplary embodiments that embodies feature & benefits of the present invention will describe in detail in the following description.Be understood that the present invention can have various variations on different embodiment, its neither departing from the scope of the present invention, and explanation wherein and accompanying drawing be when the use that explain in itself, but not in order to limit the present invention.
As depicted in figs. 1 and 2, cold rolling seamless steel pipe blank rotary clamping device of the present invention comprises rotating shaft 1, a plurality of claw 2 is with master jaw 3 and clamp axle sleeve 50.Rotating shaft 1 is hollow shaft, by transmission device, connects the first drive unit.Wherein transmission device comprises the first power transmission shaft 71 and second driving shaft 72, the first power transmission shaft 71 and second driving shaft 72 are installed on support 8, the first power transmission shaft 71 is provided with the first travelling gear 73, the second travelling gear 74 and the 3rd travelling gear 75 are installed on second driving shaft 72, the 4th travelling gear 76 is installed in rotating shaft 1, the first travelling gear 73 and the second travelling gear 74 are intermeshing, the 3rd travelling gear 75 and the 4th travelling gear 76 engagements.On the input of the first power transmission shaft 71, be processed with keyway, can connect the first drive unit.This first drive unit is motor (not shown), and this motor can be realized intermittent rotary, thereby drives rotating shaft 1 to carry out intermittent rotary by above-mentioned transmission device.
Master jaw 3 is a circular cone, the inclined-plane of the outer face in the cross section of axially analysing and observe along rotating shaft 1 for increasing gradually to pinching end.Clamp the pinching end that axle sleeve 50 is sleeved on rotating shaft 1, and by the connection realization of key 9 and the rotation of synchronizeing of rotating shaft 1, in the rotating shaft 1 of key 9 correspondences, be processed with chute, this chute length is greater than the length of key 9, to guarantee that clamping axle sleeve 50 moves axially along rotating shaft 1.Clamp axle sleeve 50 one end and connect the second drive unit, and can, along axially the moving of rotating shaft 1, clamp axle sleeve 50 other ends inner sides along being circumferentially processed with the cone tank of master jaw 3 outer faces that are slidably matched.Cone tank quantity is identical with master jaw 3, also it is 6,6 equal slip caps of master jaw 3 are contained in this cone tank, each master jaw 3 two sides on be also provided with recess, on the two sides of cone tank, be provided with the protuberance matching with this recess, by this structure, can make master jaw 3 fix reliably in this cone tank and can not come off, and determine position under the axial location acting in conjunction of rotating shaft 1.When clamping axle sleeve 50 and axially move to pinching end along rotating shaft 1, master jaw 3 in cone tank relative to oppositely moving.(in fact master jaw 3 is not subjected to displacement in the axial direction, is that cone tank is moving to rotating shaft 1 pinching end, and therefore relative to cone tank, master jaw 3 moves in the opposite direction.) due to cone match between cone tank and master jaw 3, therefore when there is relative motion in both, radially being moved of master jaw 3 phase countershafts 1, and drive claw 2 to depress (when clamping axle sleeve 50 moves to rotating shaft 1 pinching end) clamping heavy caliber cold rolling seamless steel pipe.
Clamp axle sleeve 50 and be sleeved in rotating shaft 1, at the outer circumference surface that clamps axle sleeve 50, be set with two bearings 51,52, bearing 51,52 is 2 single-row tapered roller bearings that are oppositely arranged.The inner ring of bearing 52 simultaneously leans and is clamping on the shaft shoulder of axle sleeve 50, another side leans the one side of bearing 51 inner rings by distance collar 58, the another side of bearing 51 inner rings is leaned and is fixedly mounted on the end face that clamps the nut 56 on axle sleeve 50 by axle sleeve 57, thereby makes bearing 51,52 realize axial restraint on clamping axle sleeve 50. Bearing 51,52 outer rings are connected with shell 53 simultaneously, are all installed with end cap 54,55 in the both ends of the surface of shell 53, and the outer ring of bearing 51,52 leans respectively this two end cap.
The second drive unit comprises the hydraulic cylinder 61 and piston rod 62 cooperatively interacting, hydraulic cylinder 61 is fixedly mounted on the support 8 of rotating shaft 1, the fixing suit of the other end actuating arm 64 of piston rod 62, this actuating arm 64 links together with shell 53, and the mode of the connection adopting for proof strength is in the present embodiment for welding.The spring 63 that is also set with buffering use on piston rod 62, one end of spring 63 leans on actuating arm 64, and the other end leans on the back-up ring being fixedly mounted on piston rod 62.
The present invention is in actual mechanical process, by motor, drive the first power transmission shaft 71, the engagement by the first travelling gear 73 and the second travelling gear 74, is transferred to second driving shaft 72, by the 3rd travelling gear 75 and the 4th travelling gear 76, be transferred to rotating shaft 1 again, rotating shaft 1 is rotated.When rotating shaft 1 is rotated, due to the effect of key 9, clamp axle sleeve 50 also in company with rotating, claw 2 and master jaw 3 are synchronizeed rotation under the acting in conjunction that clamps through hole on the cone tank of axle sleeve 50 and rotating shaft 1 pinching end with rotating shaft 1.Hydraulic system is to fuel feeding in hydraulic cylinder 61, relative hydraulic cylinder 61 actions of piston rod 62, and piston rod 62 drives shells 53 actions by actuating arm 64, and shell 53 is driven and is clamped axle sleeves 50 and move axially along rotating shaft 1 by two end cap and bearing 51,52.Clamp axle sleeve 50 when mobile, by coordinating of cone tank and master jaw 3, promote master jaw 3 and move along rotating shaft 1 radial direction, thereby drive claw 2 phase countershafts 1 depress or retract, finally realize the clamping of heavy caliber cold rolling seamless steel pipe and unclamp.
Beneficial effect of the present invention is, the present invention compared with prior art, in the present invention, adopt and clamp axle sleeve 50, on clamping axle sleeve 50, cone tank is set and coordinates master jaw 3, when clamping axle sleeve 50 moves along rotating shaft 1 under the driving of the second drive unit, by cone match, depress master jaw 3, thereby make claw 2 clamp pipe, this reliable clamping, the pipe that can be used for the bigbore cold rolling seamless steel of clamping rotation, and first drive unit this device is rotated, the second drive unit makes this device clamp action, overall process realizes automation mechanized operation, production efficiency is very high, and of the present invention simple in structure, compact, floor space is very little, very practical, there is very strong market value.
Technical scheme of the present invention is disclosed as above by preferred embodiment.Those skilled in the art should recognize in the situation that do not depart from change and the retouching that scope and spirit of the present invention that the appended claim of the present invention discloses are done, within all belonging to the protection domain of claim of the present invention.
Claims (5)
1. a cold rolling seamless steel pipe blank rotary clamping device, is characterized in that, comprising:
Hollow rotating shaft, is processed with the through hole of a plurality of relatively described spindle central axis centre symmetries on the pinching end of described rotating shaft, described rotating shaft is rotated under a device drives;
A plurality of claws and master jaw, described a plurality of claw coordinates mutually with master jaw, and be arranged on correspondingly in described through hole, described a plurality of claws and master jaw all can be in described through hole along radially the moving of described pinching end, described master jaw is a circular cone;
Clamp axle sleeve, described clamping axle sleeve is arranged on described pinching end, described clamp shaft is enclosed within the effect of a connected drive unit can axially moving along described rotating shaft, described clamping axle sleeve is provided with near one end of described pinching end a plurality of cone tanks that support described a plurality of master jaws, between described master jaw and described cone tank, relative motion can occur.
2. cold rolling seamless steel pipe blank rotary clamping device as claimed in claim 1, is characterized in that, described master jaw two sides on be provided with recess, on the two sides of described cone tank, be provided with the protuberance matching with the female portion.
3. cold rolling seamless steel pipe blank rotary clamping device as claimed in claim 1, it is characterized in that, also comprise hydraulic cylinder, piston rod, bearing and shell, described bearing holder (housing, cover) is contained between described clamping axle sleeve and described shell and axial restraint, and described shell is connected with described piston rod.
4. cold rolling seamless steel pipe blank rotary clamping device as claimed in claim 3, is characterized in that, is also set with the spring of buffering use on described piston rod.
5. the cold rolling seamless steel pipe blank rotary clamping device as described in as arbitrary in claim 1-4, it is characterized in that, also comprise the support being fixedly installed, described rotating shaft is arranged on described support, the first power transmission shaft and second driving shaft are also installed on described support, on described the first power transmission shaft, the first travelling gear is installed, the second travelling gear and the 3rd travelling gear are installed on described second driving shaft, the 4th travelling gear is installed in described rotating shaft, described the first travelling gear and described the second travelling gear are intermeshing, described the 3rd travelling gear and described the 4th travelling gear are intermeshing, described hydraulic cylinder is fixedly mounted on described support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310594396.2A CN103567236A (en) | 2013-11-22 | 2013-11-22 | Rotary clamping device for tube blank of cold rolling seamless steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310594396.2A CN103567236A (en) | 2013-11-22 | 2013-11-22 | Rotary clamping device for tube blank of cold rolling seamless steel tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103567236A true CN103567236A (en) | 2014-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310594396.2A Pending CN103567236A (en) | 2013-11-22 | 2013-11-22 | Rotary clamping device for tube blank of cold rolling seamless steel tube |
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| Country | Link |
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| CN (1) | CN103567236A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113770183A (en) * | 2021-05-20 | 2021-12-10 | 上海攀枝花机械制造有限公司 | Self-locking spring clamping mechanism |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3680345A (en) * | 1970-01-05 | 1972-08-01 | Vni | Floating, blank feed and turning mechanism for thin wall pipe mill |
| CN201519698U (en) * | 2009-06-02 | 2010-07-07 | 张家港恒立机械有限公司 | Mandrel clamping device of cold pilger mill |
| CN201596683U (en) * | 2010-02-05 | 2010-10-06 | 上海攀枝花机械厂 | Tube blank feeding trolley of cold pilger mill |
| CN202185464U (en) * | 2011-08-23 | 2012-04-11 | 浙江中星钢管机械有限公司 | Feeding trolley on cold tube rolling machine |
| CN102463259A (en) * | 2010-11-09 | 2012-05-23 | 常熟市梅李机械制造有限公司 | Power transmission device of swing mechanism of cold pipe rolling machine |
| CN102463260A (en) * | 2010-11-09 | 2012-05-23 | 常熟市梅李机械制造有限公司 | Matching structure for power output shaft and mandrel chuck of swing mechanism of cold-rolling pipe mill |
| CN103286134A (en) * | 2013-06-14 | 2013-09-11 | 中国重型机械研究院股份公司 | Core rod clamping mechanism of double-roller cold reducing mill |
-
2013
- 2013-11-22 CN CN201310594396.2A patent/CN103567236A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3680345A (en) * | 1970-01-05 | 1972-08-01 | Vni | Floating, blank feed and turning mechanism for thin wall pipe mill |
| CN201519698U (en) * | 2009-06-02 | 2010-07-07 | 张家港恒立机械有限公司 | Mandrel clamping device of cold pilger mill |
| CN201596683U (en) * | 2010-02-05 | 2010-10-06 | 上海攀枝花机械厂 | Tube blank feeding trolley of cold pilger mill |
| CN102463259A (en) * | 2010-11-09 | 2012-05-23 | 常熟市梅李机械制造有限公司 | Power transmission device of swing mechanism of cold pipe rolling machine |
| CN102463260A (en) * | 2010-11-09 | 2012-05-23 | 常熟市梅李机械制造有限公司 | Matching structure for power output shaft and mandrel chuck of swing mechanism of cold-rolling pipe mill |
| CN202185464U (en) * | 2011-08-23 | 2012-04-11 | 浙江中星钢管机械有限公司 | Feeding trolley on cold tube rolling machine |
| CN103286134A (en) * | 2013-06-14 | 2013-09-11 | 中国重型机械研究院股份公司 | Core rod clamping mechanism of double-roller cold reducing mill |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113770183A (en) * | 2021-05-20 | 2021-12-10 | 上海攀枝花机械制造有限公司 | Self-locking spring clamping mechanism |
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Application publication date: 20140212 |