CN1180000A

CN1180000A - Steel ball bloom continuous rolling mill

Info

Publication number: CN1180000A
Application number: CN 97110455
Authority: CN
Inventors: 史荣; 王海儒; 杨晓明; 弓宝敦; 黄庆学
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-05-05
Filing date: 1997-05-05
Publication date: 1998-04-29
Anticipated expiration: 2017-05-05
Also published as: CN1059616C

Abstract

The tandem mill for continuously rolling round bar material into ball blank is composed of two-high horizontal mill, two-high vertical mill and mechanical transmission system. It is characterized by that said mechanical transmission system is formed from duplex two-way worm gear and worm case capable of simultaneously driving the above-mentioned two mills to make them implement synchronous transmission and synchronous gears capable of driving the above-mentioned two mills to make them implement synchronous rotation, and the roll form of the horizontal mill is a circular frustum body whose peripheral surface is equipped with some equal-pitch half-round cylinder passes, and the roll form of the vertical mill is a cylinder body whose peripheral surface is equipped with some equal-pitch hemi-spherical passes. It possesses the advantages of good production stability, high production efficiency, high product quality and high rate of finished products.

Description

Steel ball bloom continuous rolling mill

The invention belongs to the stress metal processing technique field, be specifically related to a kind of tandem mill that garden steel or wire rod continuous rolling is become steel ball blanks.

Now China to produce the method for steel ball blanks a lot, as cold upset forming, oblique milling shaping, die-forging forming, milling is shaped etc., they respectively have its historical value, pluses and minuses and range of application, major defect is that production efficiency is low, poor product quality, lumber recovery are low etc.Five, the sixties abroad the someone proposed to produce the technology and the equipment of steel ball blanks with method for tandem rolling, as United States Patent (USP) 2,801,556 " CONTINUOUS METHOD AND APPARATUS FORFORMING BALLS " (show as Fig. 1, nineteen fifty-seven authorizes), French Patent (FRP) 1,327,234 " Machine arouler tangentielle pour la tabrication continue debauches de billes " (show as Fig. 2, authorized in 1963), these two kinds of patented technologies are not seen introduction in China, argumentation and analysis according to this patent documentation, think to remain, as United States Patent (USP) 2,801 in the some shortcomings part, 556, be two kinds of milling train tandem rollings, respectively by the independent transmission of two cover transmission systems, and roll Pass all is a semi-spherical shape, Synchronous Transmission all in a flash so just can not strict guarantee two rolling mills in office, from setting up on the continuous rolling relationship, also just can't guarantee the unanimity of deformation of rolled wire on the cycle, be difficult to guarantee the quality of rolled products; French Patent (FRP) 1,327,234th is made up of four milling train continuous rollings that drive separately, not only number of devices is many, and exists United States Patent (USP) 2,801 equally, 556 existing problems, the uniformity in deformation of rolled wire cycle more are difficult to guarantee, are difficult for realizing stable continuous rolling process.

The objective of the invention is in order to overcome the shortcoming that above-mentioned prior art exists, provide transmission system of a kind of usefulness to drive two rolling mills simultaneously, the roll that can guarantee two rolling mills can both rotate at any time synchronously, and the pass cycle of horizontal mill can be regulated, the steel ball bloom continuous rolling mill that can be complementary with the vertical mill roll pass cycle.

The object of the present invention is achieved like this: as Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6, the present invention is made up of tandem rolling unit and guide and guards that motor, machine driven system, two roller horizontal mills and two roller vertical mills are formed, it is characterized in that:

(1) described machine driven system is made up of two-way worm and gear transmission case 4 of duplex that can drive horizontal mill 2 and the synchronous rotation of vertical mill 3 dos simultaneously and the synchromesh gear group 12 and 15 that can drive the synchronous rotation of horizontal mill 2 rolls and vertical mill 3 rolls do.

The two-way worm and gear transmission case 4 of-described duplex, its structure is mounted in the two-way worm shaft 5 of duplex in the transmission case, it has two sections screw threads that are respectively left and right rotation direction, the screw thread of left side section is meshed with the worm gear 6 on being installed in the output shaft 7 that can drive the horizontal mill roll rotation, screw thread on the right section is meshed with the worm gear on being installed in the output shaft 8 that can drive the vertical mill roll rotation, and the worm shaft middle part is supported by sliding bearing.

-described synchromesh gear transmission, its structure are the synchromesh gear groups 12 (a pair of) on the horizontal mill 2, are installed in the input of top and bottom rolls axle respectively, and it is that output shaft 7 by worm and gear transmission case 4 drives by driving gear set 10 (a pair of); Synchromesh gear group 15 (a pair of) on the vertical mill 3 is installed in the input of left and right sides roll mandrel respectively, and it is that output shaft 8 by worm and gear transmission case 4 directly drives.

(2) described two roller horizontal mills, the geometry that it is characterized in that roll is garden cone table (as shown in Figure 7), cone angle is 1 °-3 °, on the conical surface of stage body, make half Cylinder pass 19 of several equal pitches, because the physical dimension of half Cylinder pass is along being identical on the frustum surface, and along on the frustum short transverse, its pass pitch changes, so, when roll mandrel moves axially, constant roll line has been equivalent to change the cycle or the pitch of rolled piece transversally cutting,, has been convenient to set up stable continuous rolling relationship so that the pitch of the pitch of horizontal mill rolled piece when can be with vertical mill rolling adapts.When rolling, top and bottom rolls drives through synchromesh gear group 12 and does to rotate synchronously, and rolled piece continuous rolling is become one by one curved body, is connected with each other and cuts and be regardless of, and is periodically section, enter subsequently continue in the two roller vertical mill roll Pass rolling.The shape of two roller vertical mill rolls is Cylinder (as shown in Figure 8), (quantity of pass equates with horizontal mill pass quantity to make the hemisphere pass 21 of several equal pitches on its garden perimeter surface, the radius of hemispherical pass is slightly larger than the radius of semi-cylinder pass), about two roll Pass constitute how much spheroid cavitys of a sealing, the pitch of this pass is corresponding with the pitch of the periodicity rolled piece that horizontal mill shuts out, through the second road continuous rolling, the geometry of rolled piece just is spheroid, remaining overlap and connecting band on it, worn in next procedure.

(3) described two roller horizontal mill and vertical mills, it is characterized in that roll is fabricated structure (as shown in Figure 9), formed by collars 23, roller shell 22, pressure ring 24, roller shell 22 is keyed on the roll mandrel, and collars 23 is contained on the roller shell 22, and pressure ring 24 is contained on the collars 23, fastening with bolt 25, collars is a consumable accessory, and roller shell and pressure ring are general parts, keeps in repair, changes very convenient.In addition,, be shaped on the bolt hole 18 and 20 of ellipse garden shape on the spoke of collars 23, regulate so that collars 23 is done rotation, to align pass as Fig. 7, shown in Figure 8.

Advantage and good effect:

(1) the present invention is as rolling production, produce relatively with other type, have the high outstanding advantage of production efficiency, and with United States Patent (USP) 2,801,556 and French Patent (FRP) 1,327,234 relatively, owing to adopted mechanical synchronization transmission and horizontal mill to adopt cone table roll, half garden cylindricality pass, can improve the quality and the lumber recovery that shut out product widely, reduce loss, reduce production costs.

(2) among the present invention, what roll adopted is fabricated structure, has made things convenient for the adjusting that aligns of the replacing of roll and pass.

(3) the present invention and United States Patent (USP) 2,801,556 have relatively reduced by a cover transmission system, and with French Patent (FRP) 1,327,234 relatively, except that having reduced by three cover transmission systems, have also reduced by two rolling mills.

Description of drawings:

Fig. 1 is a United States Patent (USP) 2,801,556 schematic diagrames.

Fig. 2 is a French Patent (FRP) 1,327,234 schematic diagrames.

Fig. 3 is " steel ball bloom continuous rolling mill " sketch.

A is a front view among the figure, and b is a side view.

Fig. 4 is the two-way worm and gear transmission case of a duplex sketch.

Fig. 5 is a horizontal mill drive mechanism sketch.

Fig. 6 is a vertical mill drive mechanism sketch.

Fig. 7 is the collars and the pass figure of horizontal mill roll.

C is a front view among the figure, and d is a side view, and e is pass figure, Φ ₁, Φ ₂Be the big end diameter of cone table.

Fig. 8 is the collars and the pass figure of vertical mill roll.

F is a front view among the figure, and g is a side view, h be K to view, i is pass figure.

Fig. 9 is a fabricated structure roll sketch.

Embodiment:

Motor 1, driving the two-way worm shaft 5 of duplex through shaft coupling rotates, the rotation that makes the worm gear 6 that is meshed with it and worm gear 9 make synchronous different directions, (lower whorl is installed on the output shaft 7 output shaft 7 by driving gear set 10, last wheel is installed on the bottom roll axle 11 of horizontal mill 2) and synchromesh gear group 12 (lower whorl is installed on the left end of bottom roll axle, last wheel is installed on the left end of topping roll axle) drive bottom roll 14 and rotate (seeing shown in Figure 5) synchronously with topping roll 13, meanwhile, (revolver connects with output shaft 8 and left roll mandrel output shaft 8 by driving synchronous gear shaft group 15, right wheel connects with right roll mandrel) and left and right sides roll 16 and 17 rotate synchronously, at this moment, whole drive system makes the top and bottom rolls of horizontal mill 2 and the left and right sides roll of vertical mill 3 realize the mechanical synchronization rotation, carries out the stable rolling production of steel ball blanks.

The technical program is suitable for producing the hot-rolled and cold-rolled steel ball blanks of Φ 2-Φ 100mm.

Claims

1, a kind of steel ball bloom continuous rolling mill, tandem rolling unit and guide and guards that it is made up of motor, machine driven system, two roller horizontal mills and two roller vertical mills are formed, and it is characterized in that: its machine driven system is made the two-way worm and gear transmission case of duplex (4) that rotates synchronously and the roll of roll that can drive horizontal mill (2) and vertical mill (3) and is done that the synchromesh gear group (12) of rotating synchronously and (15) form by driving horizontal mill (2) and vertical mill (3) simultaneously.

2, steel ball bloom continuous rolling mill as claimed in claim 1, the geometry that it is characterized in that described two roller horizontal mill rolls is the garden cone table, on the side face of the garden of garden cone table, be processed with half Cylinder pass of several equal pitches, roll stacks is contained on the roll mandrel, two roller vertical mill rolls are Cylinder shapes, make the hemisphere pass that the pitch of its pitch of several equal pitches and the periodicity rolled piece that horizontal mill shuts out is complementary on its garden side face.

3, steel ball bloom continuous rolling mill as claimed in claim 2, the cone angle that it is characterized in that its garden cone table of roll on the described two roller horizontal mills are 1 °-3 °.

4, steel ball bloom continuous rolling mill as claimed in claim 2, the roll that it is characterized in that described two roller horizontal mills and two roller vertical mills is a fabricated structure, being about to roller shell (22) is fixedly mounted on the roll mandrel with key, collars (23) is contained on the roller shell (22), pressure ring (24) is contained on the collars (23), fastening with bolt (25).

5, steel ball bloom continuous rolling mill as claimed in claim 4 is characterized in that being shaped on bolt hole (18) and (20) that are used to regulate the ellipse garden shape that aligns roll pass on the spoke of collars of described fabricated structure roll.