CN201253628Y

CN201253628Y - Back chuck mechanism for cold reduction mill

Info

Publication number: CN201253628Y
Application number: CNU2008201604282U
Authority: CN
Inventors: 朱平; 陈东武; 张其余
Original assignee: CHANGSHU MEILI MACHINERY MANUFACTURE Co Ltd
Current assignee: CHANGSHU MEILI MACHINERY MANUFACTURE Co Ltd
Priority date: 2008-09-19
Filing date: 2008-09-19
Publication date: 2009-06-10
Anticipated expiration: 2018-09-19

Abstract

A back chuck mechanism for a cold pilger mill belongs to the technical field of tube rolling mills, and comprises a mill frame, a drive shaft arranged on the mill frame, and an internal sleeve tube connected with the drive shaft in a transmission form. One end of the internal sleeve tube is connected with a front external sleeve tube, and the other end is connected with a back external sleeve tube. The back chuck mechanism is characterized in that the end part of one end of the front external sleeve tube is fixedly provided with a taper guiding sleeve, the inner wall of the taper guiding sleeve is provided with a group of jaw sliding grooves with equal spaces; each jaw sliding groove is provided with a jaw inside in a sliding way; the position in the internal sleeve tube extending out of the front external sleeve tube, which corresponds to the end part of one end of the taper guiding sleeve, is provided with leg clamping grooves, and the number of the leg clamping grooves is equal to that of the jaw sliding groove; the positions of the leg clamping grooves correspond to the positions of the jaw sliding grooves; the jaw extends to the leg clamping grooves; the external sleeve of the external sleeve tube is provided with a driving sleeve which is connected with a pair of action cylinders arranged on the mill frame. The utility model has the advantage that the labor intensity of operators can be lightened without manual clamping.

Description

The rear chuck mechanism that cold pilger mill is used

Technical field

The utility model belongs to the pipe mill technical field, is specifically related to the rear chuck mechanism that a kind of cold pilger mill is used, and is used to clamp plug and drives plug do periodic gyration, and the tubing rounding that is rolled with guarantee is smooth and wall thickness is even.

Background technology

What the rear chuck mechanism that the cold pilger mill in the prior art is used adopted is three-jaw self-centering chuck, must regulate with spanner by handwork when plug is clamped, and shortcoming is that efficient is low, and operator's labour intensity is big; Under the big operating mode of roll-force, be easy to generate looseningly, make the relative position of plug and pass produce skew, influence the rolling quality of tubing.Therefore be necessary to be improved, technical scheme described below is based on producing under this background.

Summary of the invention

Task of the present utility model is that will to provide a kind of and can not produce position skew to the plug reliable clamping, clamp efficient high and can alleviate the rear chuck mechanism that the cold pilger mill of operator's labour intensity is used.

Task of the present utility model is finished like this, the rear chuck mechanism that a kind of cold pilger mill is used, comprise frame, one is located at the driving shaft that connects with the input power transmission on the frame, one inner sleeve, connect with described driving shaft transmission, one end of this inner sleeve extend in the preceding outer tube that is located at frame one side and connects with preceding outer tube, and the other end extend in the back outer tube that is located at the frame opposite side with the back outer tube and connects, characteristics are: an end end of outer tube is installed with a circular cone guide pin bushing before described, offer the claw sliding tray that one group of spacing each other equates on the inwall of this circular cone guide pin bushing, be equipped with a claw in every claw sliding tray; Outer tube and the end end that corresponds in the described circular cone guide pin bushing offer that quantity equates with described claw sliding tray and the corresponding card base groove in position before described inner sleeve is stuck in, and described claw is insinuated in the card base groove; Be arranged with one outside the outer tube and be used to make preceding outer tube to take the actuating sleeve that the circular cone guide pin bushing moves horizontally before described, actuating sleeve and a pair of rack-mounted acting cylinder connect.

In a specific embodiment of the present utility model, the two ends of described driving shaft respectively are provided with a clutch shaft bearing, clutch shaft bearing is located on the described frame by bearing block, constitute at an end of driving shaft and to be used for the spline joint that connects with input power, and be installed with a pinion on the axis body of driving shaft, this pinion and described inner sleeve transmission connect.

In another specific embodiment of the present utility model, be installed with a gear wheel on the described inner sleeve, this gear wheel is meshed with described pinion.

Go back in the specific embodiment of the present utility model, outer tube is arranged on a side of described frame before described by leading block set, and described back outer tube is arranged on the opposite side of described frame by back guide pin bushing seat, and remains on the same straight line with preceding outer tube.Wherein, the outer wall of back outer tube constitutes the adjustment thread, adjusts thread and matches with the internal screw thread that the inwall of described back guide pin bushing seat is processed.

In another specific embodiment of the present utility model, the outer wall of an end of outer tube constitutes a shoulder before described, described actuating sleeve is arranged on the preceding outer tube by a pair of second bearing, one side of actuating sleeve matches with described shoulder, and the hold-down nut of the other end of outer tube stopped before opposite side was affixed to by spiral shell.

In another specific embodiment of the present utility model, described acting cylinder is oil cylinder or cylinder, the cylinder body of acting cylinder with horizontally-arranged state be fixed on the frame, and the cylinder post of the cylinder post of acting cylinder and the extension on the described actuating sleeve fixedly ear connect.

More of the present utility model and in specific embodiment, described acting cylinder is an oil cylinder.

In of the present utility model and then specific embodiment, be equipped with positioning key on the outer wall of described inner sleeve, this positioning key be arranged with that the positioning spline of outer sleeve inner wall matches before described.

Of the present utility model again more and in specific embodiment, described back outer tube is stretched over the outer end of described frame and is processed with the adjustment gear ring, this adjustment gear ring connects mutually with mechanism for axial adjusting on being located at described frame.

In again of the present utility model and then specific embodiment, described mechanism for axial adjusting comprises worm shaft, handwheel, worm screw, gear shaft, adjustment gear and worm gear, worm shaft is located on the described frame by the 3rd bearing, handwheel is fixed on an end of worm shaft, worm screw be formed on the worm shaft and and worm wheel, worm gear is formed on the gear shaft, gear shaft is located on the frame by the 4th bearing, and the adjustment gear is fixed on the outer axle head of frame that gear shaft is stretched over and is meshed with described adjustment gear ring.

Disclosed technical scheme of the present utility model can will place the reliable clamping of plug of inner sleeve and can not produce the position skew, drive actuating sleeve by acting cylinder, and then outer tube is taken circular cone guide pin bushing motion before being made by actuating sleeve, thereby realize automatically and quickly the plug in the inner sleeve being clamped, thereby need not to clamp and can alleviate operator's labour intensity by hand by claw.

Description of drawings

Fig. 1 is a specific embodiment structure chart of the present utility model.

Fig. 2 is an application examples schematic diagram of the present utility model.

The specific embodiment

Ask for an interview Fig. 1, provided driving shaft 15, hub setting is located on the frame 1 shortly rotationally by a pair of clutch shaft bearing 12 at the two ends of this driving shaft 15.On the axis body of driving shaft 15, use the solid pinion 17 of flat key key, this pinion 17 is driving gear, end at driving shaft 15 is that left end shown in Figure 1 is processed with a spline connector 21, connect by this spline connector 21 and input power transmission, promptly by not shown but can realize the input power of knowing fully according to general knowledge and drive driving shaft 15 work, and then drive equally by flat key 16 by the pinion on the driving shaft 15 17 and to be fixed in gear wheel 18 motions on the inner sleeve 13, and then drive inner sleeves 13 motions by gear wheel 18.

With present location status shown in Figure 1 is example (as follows), and the right-hand member of inner sleeve 13 is solid with positioning key 14 and preceding outer tube 49 keys, offers the keyway (not shown) at the inwall of preceding outer tube 49, and positioning key 14 is placed in the keyway.Preceding outer tube 49 places in the leading block set 53, guide pin bushing seat 53 then is placed in a side of frame 1, it is illustrated right side, right-hand member at preceding outer tube 49 is fixed a circular cone guide pin bushing 2 with one group of first hold-down screw 51, shown in figure, the global shape flare of circular cone guide pin bushing 2 is offered one group of claw sliding tray 4 at the circumferencial direction of the inwall of circular cone guide pin bushing 2.In the present embodiment, the quantity of one group of claw sliding tray 4 is selected 3, between each claw sliding tray 4 apart 120 °, a claw 11 is slidingly matched in every claw sliding tray 4, each claw 11 matches with the card base groove 10 that is opened in inner sleeve 13 right-hand members, that is to say that each claw 11 is insinuated in the corresponding card base groove 10.When circular cone guide pin bushing 2 displacement to the right, the degree that is insinuated in the card base groove 10 of claw 11 is big so, and vice versa.Make circular cone guide pin bushing 2 to the left or to the right the power of displacement come from actuating sleeve 44.See by Fig. 1, actuating sleeve 44 is nested with on preceding outer tube 49 by a pair of second bearing 45, second bearing, the 45 preferred plane bearings that adopt, owing to constitute a shoulder 52 (but also weighting platform rank) at the outer wall of preceding outer tube 49, therefore when acting on shoulder 52 under the effect of the acting cylinder 3 that actuating sleeve 44 will be mentioned below external force is, force circular cone guide pin bushing 2 displacement to the right so.Respectively be extended with fixedly ear 46 of a cylinder post in the corresponding both sides of actuating sleeve 44, each cylinder post fixedly ear 46 by cylinder post 50 connections of connecting pin 47 with an acting cylinder 3, the cylinder body of acting cylinder 3 with level and with cantilever form be fixed on the frame 1.Among the figure, though the applicant only shows an acting cylinder 3, by top explanation can know fully should have a pair of, and, though acting cylinder 3 can be an oil cylinder, also can be cylinder,, be appropriate to choose oil cylinder, present embodiment promptly is to select oil cylinder.For prevent actuating sleeve 44 dissociate before outer tube 49, therefore the right-hand member at preceding outer tube 44 is processed with screw thread 48, as long as be rotated with on the screw thread 48 with hold-down nut 43, just can stop actuating sleeve 44.

Still see Fig. 1, right-hand member at inner sleeve 13 is processed with annular groove 9, card base is taken over a business 8 be placed on the inner sleeve 13 after, again snap ring 7 is snapped onto in the annular groove 9, take over a business 8 by 7 pairs of card bases of snap ring and stop, that is to say that card base takes over a business 8 and contact with the side of claw 11.Taking over a business outside 8 at card base is that card base is taken over a business 8 right side and fixed a platen 6 by one group of second hold-down screw 5, and platen 6 is what to be nested with at the right-hand member of inner sleeve 13.The left end of inner sleeve 13 is by the 5th, the 6th bearing 22,19 and the 5th, the 6th bearing 22, compression ring 20 and by the 7th between 19, the 8th bearing 30,28 and the 7th, the 8th bearing 30, different compression ring between 28 and supporting is linked on the corresponding bearing bore 24 of back outer tube 27, again, end after the left end of inner sleeve 13 promptly is stretched over outside the outer tube 27 offers draw-in groove 23, insert collar 31 in the draw-in groove 23, be furnished with a snap ring seat 32 that is nested with on inner sleeve 13 at the afterbody of collar 31, snap ring seat 32 and the 7th bearing 30 connected firmly with one group of the 3rd hold-down screw 33.By Fig. 1 finding, the outer wall of back outer tube 27 is processed with adjusts thread 25, and this adjustment thread 25 is that internal screw thread matches with processing at the thread of back guide pin bushing seat 26 inwalls, and back guide pin bushing seat 26 is located at the left side of frame 1.Left end at back outer tube 27 constitutes adjustment gear ring 29, obviously, this adjustment gear ring 29 is used for connecting with mechanism for axial adjusting 37, move axially by adjusting gear ring 29 drive inner sleeves 13 by mechanism for axial adjusting 37, using aforesaid one group of claw, 11 drives of abundant guarantee places the plug 54 (Fig. 2 shows) of inner sleeve 13 to move axially, because plug 54 has tapering, and then can adjust the thickness of pipe 57 tube walls, promptly adapts to the thickness of tube wall.

Still see Fig. 1, provided preferably but not the mechanism for axial adjusting 37 that definitely is limited to, end as the worm shaft 38 of this mechanism for axial adjusting 37 is located on the frame 1 by the 3rd bearing 39, and worm screw 36 is formed on the worm shaft 38, and handwheel 40 is fixed on the end of worm shaft 38; Gear shaft 35 is hubbed on the frame 1 by a pair of the 4th bearing 42, worm gear 41 is formed in the nearly middle part of gear shaft 35, match with aforesaid worm screw 36, in the end of gear shaft 35 frame that is stuck in 1 is that gear 34 is adjusted in left end fixed installation shown in Figure 1, and this adjustment gear 34 is meshed with aforesaid adjustment gear ring 29.

Ask for an interview Fig. 2 and in conjunction with Fig. 1, the applicant sketches application of the present utility model, when 56 pairs of pipes of roll 57 of the pipe mill of illustrating in will be by Fig. 2 55 are rolling, the reason of knowing according to industry, pipe 57 is placed on outside the plug 54, the motion of plug 54 is then by structure guarantee shown in Figure 1 of the present utility model, specifically: the left end (is example with location status shown in Figure 2) of plug 54 is extend in the inner sleeve 13, drive a pair of acting cylinder 3 work, the cylinder post 50 of acting cylinder 3 is bounced back in cylinder body, by a pair of cylinder post 50 of a pair of acting cylinder 3 actuating sleeve 44 is dragged to the right simultaneously and drawn, outer tube 49 displacement to the right before promoting, simultaneously take circular cone guide pin bushing 2 displacement to the right, drive one group of (3) claw 11 by circular cone guide pin bushing 2 and be inserted in the card base groove 10, the plug 54 that is inserted in the inner sleeve 13 is firmly clamped by preceding outer tube 49.At this moment, under the work of driving shaft 15, drive gear wheel 18 motions that are packed on the inner sleeve 13 by the pinion 17 of driving shaft 15, thereby make inner sleeve 13 motions, drive plug 54 rotations in it by the synchronized movement ground of inner sleeve 13 simultaneously.Under the effect of roll 56, it is thin that the wall of pipe 57 is opened up gradually, rolling until finishing.Outer tube 49 and circular cone guide pin bushing 2 rotate simultaneously before in inner sleeve 13 rotations.In the time will getting from plug 54, as long as make acting cylinder 3 work so, cylinder post 50 is stretched out in cylinder body, circular cone guide pin bushing 2 opens to left dislocation claw 11 pines, outwards extracts plug 54.

Claims

1, the rear chuck mechanism that a kind of cold pilger mill is used, comprise frame (1), one is located at the driving shaft (15) that connects with the input power transmission on the frame (1), one inner sleeve (13), connect with described driving shaft (15) transmission, one end of this inner sleeve (13) extend in the preceding outer tube (49) that is located at frame (1) one side and connects with preceding outer tube (49), and the other end extend in the back outer tube (27) that is located at frame (1) opposite side with back outer tube (27) and connects, it is characterized in that: an end end of outer tube before described (49) is installed with a circular cone guide pin bushing (2), offer the claw sliding tray (4) that one group of spacing each other equates on the inwall of this circular cone guide pin bushing (2), be equipped with a claw (11) in every claw sliding tray (4); Described inner sleeve (13) the preceding outer tube that is stuck in (49) and the end end that corresponds in the described circular cone guide pin bushing (2) offer that quantity equates with described claw sliding tray (4) and the corresponding card base groove in position (10), described claw (11) is insinuated in the card base groove (10); Be arranged with one outside the outer tube before described (49) and be used to make preceding outer tube (49) to take the actuating sleeve (44) that circular cone guide pin bushing (2) moves horizontally, actuating sleeve (44) connects with a pair of acting cylinder (3) that is installed on the frame (1).

2, the rear chuck mechanism used of cold pilger mill according to claim 1, the two ends that it is characterized in that described driving shaft (15) respectively are provided with a clutch shaft bearing (12), clutch shaft bearing (12) is located on the described frame (1) by bearing block, constitute at an end of driving shaft (15) and to be used for the spline joint (21) that connects with input power, and be installed with a pinion (17) on the axis body of driving shaft (15), this pinion (17) connects with described inner sleeve (13) transmission.

3, the rear chuck mechanism used of cold pilger mill according to claim 2 is characterized in that being installed with on the described inner sleeve (13) gear wheel (18), and this gear wheel (18) is meshed with described pinion (17).

4, the rear chuck mechanism used of cold pilger mill according to claim 1, it is characterized in that described preceding outer tube (49) is arranged on a side of described frame (1) by leading block set (53), and described back outer tube (27) is arranged on the opposite side of described frame (1) by back guide pin bushing seat (26), and remains on the same straight line with preceding outer tube (49).Wherein, the outer wall of back outer tube (27) constitutes adjusts thread (25), adjusts thread (25) and matches with the internal screw thread that the inwall of described back guide pin bushing seat (26) is processed.

5, the rear chuck mechanism used of cold pilger mill according to claim 1, the outer wall that it is characterized in that an end of described preceding outer tube (49) constitutes a shoulder (52), described actuating sleeve (44) is arranged on the preceding outer tube (49) by a pair of second bearing (45), one side of actuating sleeve (44) matches with described shoulder (52), and opposite side is affixed to the other end of preceding outer tube (49) by spiral shell hold-down nut (46) stops.

6, the rear chuck mechanism used of cold pilger mill according to claim 1, it is characterized in that described acting cylinder (3) is oil cylinder or cylinder, the cylinder body of acting cylinder (3) with horizontally-arranged state be fixed on the frame (1) and fixedly ear (46) connection of the cylinder post of the extension on the cylinder post (50) of acting cylinder (3) and the described actuating sleeve (44).

7, the rear chuck mechanism used of cold pilger mill according to claim 6 is characterized in that described acting cylinder (3) is an oil cylinder.

8, the rear chuck mechanism used of cold pilger mill according to claim 1, it is characterized in that being equipped with positioning key (14) on the outer wall of described inner sleeve (13), this positioning key (14) matches with the positioning spline that is arranged with outer tube before described (49) inwall.

9, the rear chuck mechanism used of cold pilger mill according to claim 1, it is characterized in that described back outer tube (27) is stretched over the outer end of described frame (1) and is processed with and adjusts gear ring (29), this adjustment gear ring (29) connects mutually with mechanism for axial adjusting (37) on being located at described frame (1).

10, the rear chuck mechanism that cold pilger mill according to claim 9 is used, it is characterized in that described mechanism for axial adjusting (37) comprises worm shaft (38), handwheel (40), worm screw (36), gear shaft (35), adjust gear (34) and worm gear (41), worm shaft (38) is located on the described frame (1) by the 3rd bearing (39), handwheel (40) is fixed on an end of worm shaft (38), worm screw (36) is formed in worm shaft (38) and upward and with worm gear (41) matches, worm gear (41) is formed on the gear shaft (35), gear shaft (35) is located on the frame (1) by the 4th bearing (42), adjust gear (34) be fixed on gear shaft (35) the institute frame that is stretched over (1) outward axle head and be meshed with described adjustment gear ring (29).