CN106540963B - Ring technique is rolled in dislocation - Google Patents

Abstract

It is that Fabric puts master respectively in the periphery of ring and endoporus that ring technique is rolled in dislocation, secondary two rolls and a core roller, three forms mould type groove corresponding with ring section configuration, they are during the feeding radially to go in the same direction, keep misaligned state, ring is set to carry out rolling ring under state in not forging on wall thickness, the average diameter change of ring is little, its coating metal occurs axially flowing and is gradually filled with the deformation of mold cavity, this dislocation is rolled after ring technique terminates, by the motion for controlling secondary roll, it subsequently can easily be converted to and commonly roll ring technique, adapt to the ring of the compound section shape of the different rolling ratios of manufacture, expand the application for rolling ring technique, production efficiency and ring rolling precision can also be improved, so as to reduce production cost.

Description

Ring technique is rolled in dislocation

First, technical field：

Present invention dislocation roll ring technique be related to it is a kind of accurate it is widely different turn forming technology, be commonly to roll ring and multi-point radial rolles over ring The development of (compound to roll ring) technique, suitable for different rollings than and the complicated ring of section configuration shaping.Belong to plastic working work Skill technical field.

2nd, background technology：

It is a kind of time-honored plastic working technique commonly to roll ring, is widely used in bearing internal external ring, wheel rim, railway wheel The Plastic Forming of the rings such as hoop, it can be completed on common vertical ring rolling mill and common horizontal machine for rolling ring.It is driven by motor The core roller that the king roller of dynamic rotation turns with passive belt forms a pair of contraposition rolls, and the ring blank being enclosed on core roller is carried out repeatedly Circulation rolling, ring internal-and external diameter expand, wall thickness reduction and gradually shape, the guide roller on the right side of core roller, which touch ring, makes the operation of rolling Steadily, the signal roller control ring outside dimension on the left of core roller.It is applied to that section configuration is relatively simple, rolling is than bigger ring Part produces.(especially section configuration has the ring of deep groove to and ring that rolling is smaller than again complicated to section configuration, such as bilateral method The connector etc. of blue, duplicate gear and Double flange track roller, all kinds of ball valves), commonly roll that ring technique is helpless, and multi-point radial rolles over ring Technique (be otherwise known as in recent years compound roll ring technique) (patent No.：ZL86108713.5, ZL201110316377.4) it is exactly that answer this Kind of demand and occur, it in ring enlarged outside diameter to being afraid of with periphery after three rolls put all contact, in ring radial rigidity foot On the premise of Enough, continue to press, it to the coating metal of ring periphery rotate anti-while ring enlarged-diameter is limited Extruding, bring it about axially flowing and be progressively full of mold cavity, now core roller has been not involved in ring rolling process, and the technique can make rolling Shaped than very little and the ring of complex contour.Multi-point radial milling ring technological process utilizes the multifunctional ring rolling machine (patent No.： ZL200810203822.4 this kind of special ring and common ring) can be produced, expands the function of machine for rolling ring in the past.It is but existing Problem is：It is required that ring radial rigidity is larger, it is not suitable for that Kong great Bi is thin, rolling shapes than big ring, also because core roller is not joined With ring rolling process, ring internal via shape is bad, must reserve larger allowance.

3rd, the content of the invention：

Present invention dislocation roll ring technique purpose be to provide it is a kind of it is new roll ring technique, it can overcome multi-point radial to roll over ring work The deficiency of skill, expand application and improve ring quality.It is applicable ring size range greatly and different rolling compare and complex contour Ring.To illustrate the novelty of the application, briefly narration must be made to existing correlation technique.

The operation principle that the sixth of the twelve Earthly Branches some commonly rolls both ring technique and steel rolling technique is identical.Steel rolling such as Fig. 1 Shown, 1,3 be a pair of contraposition rolls, and 2 be rolling workpiece.Steel by a pair or it is some to up and down contraposition reverse rotation roll During the type groove of roller, local compression, when meeting bite condition and forging saturating condition, section reduction occurs, the plasticity of axis elongation becomes Shape.Common to roll ring as shown in Fig. 2 its a pair of contraposition rolls, one is that the big roll 4 (being referred to as king roller) of active rotation is located at The periphery of ring 5, another small roll 6 passively rotated (being referred to as core roller) is in the endoporus of ring 5, the wall thickness office of ring 5 Inside and outside compression in portion, meet bite condition and forge saturating condition when, ring 5 by band turn during, repeatedly into this to by Close roller gap is walked, while the wall thickness of ring 5 progressively reduces, inside and outside footpath is completed when being extended to the geomery of requirement Ring rolling process.

The multi-point radial that the sixth of the twelve Earthly Branches has rolles over the operation principle of ring (compound to roll ring) technique as shown in figure 3, it is big in ring periphery Cause to be afraid of one big two small three rolls of arrangement, one of them big active rotation of roll (king roller) 4, drive ring 5 and two small Roll (secondary roll) 7 and 8 rotates, and 6 be core roller while rolling ring (compound must use), now three rolls radially opposite feeding when, ring 5 Outer surface three at local compression, on the premise of the radial rigidity sufficiently large (ring will not flatten) of ring 5, because of ring 5 Wall thickness both sides do not have contraposition roll, ring will not forge under state integral diameter expansion, the average diameter of ring Change is little, as long as ring periphery bite condition meets, mold shape makes ring periphery coating metal recur full of mould The axial direction flowing of die cavity, make the section configuration shaping that ring periphery is more complicated.But in ring periphery during three-roll rolling, bore area In tensile stress state, and no core roller is participated in rolling ring, and its bore area shape and size is difficult to control.

Present invention dislocation rolls ring technical process as shown in Figure 4 and Figure 5, and Fig. 4 is to roll state when ring starts, and it is in ring 5 On the appropriate location of periphery, a larger king roller 4 and a less secondary roll 7 are disposed, in the endoporus of ring 5, peace A core roller 6 is put, the line at the center of core roller 6 to the center of king roller 4 and the center of core roller 6 are rolled to pair between the line at the center of rod 7 Angle is Q, and its value is 90 ° of 170 ° of ＜ Q ＜, as shown in figure 4, the contact point K of core roller 6 and the endoporus of ring 5 is in pair of king roller 4 On the position of position, king roller is rotated by motor run, and it drives ring 5, core roller 6 and secondary roll 7 to rotate, and composition rolls ring moulds tool, The secondary roll 7 on right side has feeds thrust with king roller 4 or the identical of core roller 6, and secondary roll 7 makes ring during radial feed Part 5 causes core roller 6 to be moved to right clockwise in the impetus position K of the endoporus of ring 5, to major and minor two rolls to upper left displacement Nearly medium position in the periphery contact position of ring 5, the alignment by become misaligned state, form dislocation and roll ring, periphery Major and minor two rolls 4,7 and endoporus in core roller 6, the ring rolling process of opposite continuous feed motion occurs in radial direction for three In, keep misaligned state.Three rolls are difficult to the wall thickness for penetrating ring 5 to the radial pressure of ring, and ring wall thickness is in and do not forged State, cause the cross-sectional area of ring 5 to be difficult to reduce, the change of the average diameter of ring is little, when bite condition meets, ring The local continuous of part periphery and bore area is pressurized, and the deformation that ring coating metal axially flows can occur, gradually fill with mould Die cavity, form the more complicated section configuration corresponding with mold cavity.The core roller 6 of dislocation participates in ring rolling process, ring all the time The shape and size of the endoporus of part 5 can be controlled preferably., can be in mistake when shaping the ring of major diameter (rolling ratio greatly) Position is rolled after ring terminates, and secondary roll 7 is retreated, king roller 4 (or core roller 6) continues opposite radial feed, and they form a pair pairs Position roll, is converted to follow-up common ring rolling process, ring diameter is extended to desired size, as shown in Figure 6.

4th, superior part of the invention：

1st, the more accurate ring compared with compound section shape can be produced, reduces allowance, reduces raw material consume and machine Processing charges, reduce part manufacturing cost.

2nd, expand and roll the application of ring technique, improve and roll ring efficiency, ring process costs are rolled in reduction.

3rd, compared with multi-functional machine for rolling ring (including vertical and sleeping force), the secondary roll parts in left side are reduced, it is not only simple Change equipment, reduce equipment manufacturing costs, and axial end roll parts are set for vertical type multifunctional machine for rolling ring, there is provided Enough arrangement spaces, design and manufacture for the two-way vertical type multifunctional machine for rolling ring of journal axle provide conveniently.

5th, illustrate：

Fig. 1, steel rolling technological work principle.

Fig. 2, commonly roll ring technological work principle.

Fig. 3, multi-point radial roll ring (compound to roll ring) technological work principle.

Fig. 4, dislocation roll ring technique and start preceding working condition.

Ring technological work principle is rolled in Fig. 5, dislocation

It is state when commonly rolling ring technique that Fig. 6, dislocation, which roll ring technique subsequent conversion,.

Structural representation of the ring with commonly rolling the two-way vertical type multifunctional machine for rolling ring of journal axle that ring is combined is rolled in Fig. 7, dislocation.

Structural representation of the ring with commonly rolling the multi-functional machine for rolling ring of journal axle bidirectional horizontal that ring is combined is rolled in Fig. 8, dislocation.

5th, specific embodiment：

The advance of loop technique is rolled based on dislocation, according to its operation principle can manufacture and design it is novel and multifunctional vertical and The horizontal two-way machine for rolling ring of journal axle, the forming accuracy and production efficiency for rolling ring are improved, reduce production cost.

Fig. 7 is that structural representation of the ring with commonly rolling the two-way vertical type multifunctional machine for rolling ring of journal axle that ring is combined is rolled in dislocation. 11 be lathe bed, and 12 be king roller down pressing oil cylinder, and 13 be slide block guide rail, and 14 is install the sliding block of king roller, and 15 be king roller, and 16 are Ring, 17 be the lower support part equipped with core roller, and 18 be secondary roll, and 19 is install the lever of secondary roll, and 20 be applying for secondary roll Compressing cylinder, its thrust is identical with king roller pressure oil cylinder, and 21 be axial roll part, and 22 be the oil motor for driving cone-shaped roll, 23 is roll a pair of cone-shaped rolls of ring end face, and 24 is control the signal roller member of ring size, and 25 be the base of lathe bed.

Ring technique is rolled according to this innovation, we have manufactured and designed first dislocation in the world and have rolled ring with commonly rolling ring and being combined The multi-functional machine for rolling ring of journal axle bidirectional horizontal, put into production in August, 2015, batch production weighs several tons of major diameter smash The accessories such as the connector of valve, compared with free forging process, produce such ring and save material more than 30%, and significantly reduce machine Processing charges, achieve good techno-economic effect.Fig. 8 is the structural representation for rolling ring component of the heavy duty machine tools, and 26 are Lathe bed, 27 be the king roller part of in situ active rotation, and 28 is install the lever of secondary roll, and 29 be secondary roll, and 30 roll for pair Roller feeding pressure oil cylinder, 31 be ring, and 32 be core roller member, and 33 be core roller feeding pressure oil cylinder, and its thrust presses with secondary roll Oil cylinder is identical, and 34 is roll a pair of taper cone pulleies of end face, and 35 is drive the oil motor of taper cone pulley, and 36 be axial end rolling portion Part.

Claims (2)

1. ring technique is rolled in dislocation, it is characterized in that：On the appropriate location of ring (5) periphery, a larger king roller (4) is disposed With a less secondary roll (7), in the endoporus of ring (5), a core roller (6) is disposed, forms looping mill rolling mould, core roller (6) The line and core roller (6) center to the angle between the line at secondary roll (7) center at center to king roller (4) center are Q, its value For 90 ° of 170 ° of ＜ Q ＜, the secondary roll (7) on right side has and king roller (4) or core roller (6) identical feeding thrust, secondary roll (7) during radial feed, ring (5) is made to cause core roller (6) to put forth effort on ring (5) endoporus to upper left displacement Point K is moved to right clockwise, the nearly medium position to major and minor two rolls in ring periphery contact position, is formed dislocation and is rolled ring, periphery Core roller (6) in major and minor two rolls (4), (7) and endoporus, three roll ring the opposite continuous feed motion of radial direction generation During, misaligned state is kept, three rolls can not penetrate ring to the radial pressure of ring, and ring (5) wall thickness is in and do not forged In the state of thoroughly, ring rolling process is carried out.

2. ring technique is rolled as the dislocation described in claim 1, it is characterized in that：Dislocation is rolled after ring terminates, can be by after secondary roll (7) Move back, king roller (4) or core roller (6) continue opposite radial feed, and they form a pair of contraposition rolls, are converted to follow-up Common ring rolling process.