CN201385043Y - Mill roll of three-roller planetary rolling mill - Google Patents
Mill roll of three-roller planetary rolling mill Download PDFInfo
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- CN201385043Y CN201385043Y CN200920115258U CN200920115258U CN201385043Y CN 201385043 Y CN201385043 Y CN 201385043Y CN 200920115258 U CN200920115258 U CN 200920115258U CN 200920115258 U CN200920115258 U CN 200920115258U CN 201385043 Y CN201385043 Y CN 201385043Y
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Abstract
The utility model relates to a mill roll of a three-roller planetary rolling mill. The mill roll (1) is basically cone-shaped. The mill roll (1) is characterized in that the mill roll (1) is divided into five zones from the tail part to the head part, namely, a feeding zone (S), a deforming zone (S1), a processing zone (S2), a sizing zone (S3) and a discharging zone (S4); annular concave-convex lines (12) are distributed on the circular conical surface of the mill roll (1) in the deforming zone (S1) in the radial direction at intervals; and oblique lines (11) formed by the axial projections of the concave-convex lines (12) are sinusoidal curves. Compared with the prior art, the mill roll has the advantages that the smooth gripping and continuous, stable and efficient rolling of mill bar blanks can be ensured during the rolling process, the violent vibration during the blank deforming process can be avoided, the surface quality of the mill bar is not influenced, the thread pitch of the drawn and rolled tubes is even and stable during the practical operation, and the service life of the mill roll is also greatly prolonged.
Description
Technical field
The utility model relates to a kind of roll of three-roller planetary rolling mill.
Background technology
Three-roller planetary rolling mill is widely used in rolling semi-finished product, finished product tubing, bar with heavy reduction and high efficiency, and its core component-roll is the key of control rolled piece quality.Three cone-shaped rolls are 120 ° of layouts each other, rotate (revolution) with rolling center-biased certain angle, and rotate (rotation) around self axis rolled piece is nipped automatically by taper rolling deformation district, though contact surface has only a long and narrow band shape, but the microcosmic small deformation is accumulated into macroscopical short time set of rolled piece, its deflection can reach more than 93%, therefore guarantee the rolled piece blank nip smoothly and continuously, stable, rolling expeditiously be crucial.
Usually the method that adopts when nipping at present is to increase frictional force, Chinese patent application (application number 89102588.X) is exactly to depress the district and have a shape groove nipping, but the ditch top that must overcome in the operation of rolling between groove just can enter next groove, therefore causes blank deformation acutely to influence the rolled piece surface quality.
The three-roller planetary rolling mill roller of disclosed a kind of rolling copper of utility model patent ZL02237667.4 and copper-alloy pipe-material, only be divided into three zones (being respectively deformed area, smooth areas, Runout area) from the afterbody of roll to head, the district is not specified to nipping, increasing by a circle between deformed area and smooth areas highly is 1-5mm, width is the bulge loop of 1-15mm, the ditch top that also will overcome in the operation of rolling between groove just can enter next groove, influences the rolled piece surface quality.
The disclosed a kind of three-roller planetary rolling mill roller of Chinese patent application (patent No. ZL200620090623.3), be divided into four zones, promptly nip the district, concentrate deformed area, clear area and and circle area, screw thread characteristics to the district of nipping are specifically described, but to the not complete elaboration in addition on the whole of four zones, therefore the pitch uniformity instability of drawn and rolled tube in practical operation, and generally can only produce about 200 tons the service life that every roll is repaired once.So above-mentioned structure awaits to improve.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of to improve the quality of products by the structure of sinusoidal camber line and prolong the roll of the three-roller planetary rolling mill in milling train service life in the roll periphery at the prior art present situation.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: the roll of this three-roller planetary rolling mill, it is conical that this roll is substantially, it is characterized in that: described roll is divided into five zones from afterbody to head, be followed successively by: material feeding region, deformed area, process island, sizing area and discharge zone, on the roll taper seat of deformed area, radially and the compartment of terrain be distributed with the concavo-convex line of annular, and the formed oblique line of the axis projection of this concavo-convex line is a sine curve.
As improvement, vertical range can be preferably 0.4～0.6mm between the peak of described concavo-convex line and the re-entrant angle, and the width of concavo-convex line is respectively 2.50～3.50mm, and the confluce between the concavo-convex line is a circular arc, the radius of this circular arc is the fillet of 6.0～7.0mm, thereby makes the degree of nipping better.
Improve, its tapering of described deformed area may be selected to be 50～80 degree again; And described concavo-convex line can be preferably 9～13, certainly, specifically can decide by designing requirement or size.
The width a of above-mentioned deformed area, its computing formula is: a=(d
4-d
32sin)/[(alpha-beta)], d wherein
4Be the big footpath of dog, d
3Be the diameter of the junctional area between deformed area and the process island, α is the angle of dog central axis and rolling axis, and β is the rolling angle of dog deformed area and rolling axis, and the unit of width is a millimeter.
Improve, it is 7～10mm that described process island width can be preferably value again, and described sizing area width may be selected to be 18～22mm; And described discharge zone width may be selected to be 15～20mm.
The diameter d of above-mentioned discharge zone and sizing area intersection
1, its computing formula is: d
1=d
Core+ 2 (d
Outside the one-tenth-d
In the one-tenth), wherein, d
Outside the one-tenthBe production tube external diameter, d
In the one-tenthBe production tube internal diameter, d
CoreBe the plug external diameter.
The diameter d of above-mentioned process island and sizing area intersection
2, the computing formula of this distance is:
d
2=2c sin (α-γ)+d
1, wherein, α is the angle of dog central axis and rolling axis, γ is sizing area finishing angle, γ≤5 °, d
1Diameter for discharge zone and sizing area intersection.
The diameter d of the intersection between above-mentioned deformed area and the process island
3, the computing formula of this distance is: d
3=kd
2, wherein K is about 1～1.1 for the experience value; d
2Diameter for process island and sizing area intersection.
Compared with prior art, the utility model adopts roll is divided into five zones from afterbody to head, be followed successively by: material feeding region, deformed area, process island, sizing area and discharge zone, on the roll taper seat of deformed area, radially and the compartment of terrain be distributed with the concavo-convex line of annular, and the formed oblique line of the axis projection of this concavo-convex line is a sine curve.The design's advantage can guarantee in the operation of rolling that the rolled piece blank is nipped smoothly and continuously, stable, rolling expeditiously, and avoided the violent Chun of blank deformation moving and influence the rolled piece surface quality, and the pitch of drawn and rolled tube is uniform and stable in practical operation, and also prolong significantly the service life of roll.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the location diagram of Fig. 1 and workpiece;
Fig. 3 is the enlarged drawing of I portion among Fig. 1;
Fig. 4 is the location diagram of distance between sine curve crest and the wave angle among Fig. 1.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figures 1 to 4, the roll of the three-roller planetary rolling mill of present embodiment, it is conical that this roll 1 is substantially, its described roll 1 is divided into five zones from afterbody to head, be followed successively by: material feeding region S, deformed area S1, process island S2, sizing area S3 and discharge zone S4, on roll 1 taper seat of deformed area S1, radially and the compartment of terrain be distributed with the concavo-convex line 12 of annular, and the formed oblique line 11 of the axis projection of this concavo-convex line 12 is a sine curve, this axis projection is the vertical direction axle (projecting direction is the vertical direction axle of roll rotating shaft, and the perspective plane is a paper) with the roll rotating shaft.Vertical range is that h is 0.5mm between the peak of above-mentioned concavo-convex line 12 and the re-entrant angle, and the width P of concavo-convex line is respectively 2.932mm, and the confluce between the concavo-convex line 12 is a circular arc, and concavo-convex line 12 is preferably 10.The radius of this circular arc is the fillet of 6.25mm.And the tapering of deformed area S1 is chosen as 50～80 degree.The width a of above-mentioned deformed area S1, its computing formula is: a=(d
4-d
32sin)/[(alpha-beta)], d wherein
4Be the big footpath of dog, d
3Be the diameter of the junctional area between deformed area S1 and the process island S2, α is the angle of dog central axis and rolling axis, and β is the rolling angle of dog deformed area S1 and rolling axis, and the unit of width a is a millimeter.Above-mentioned process island S2 width b is that value is 7～10mm.And sizing area S3 width c is chosen as 18～22mm, discharge zone S4 width e is 15～20mm.The diameter d of above-mentioned discharge zone S4 and sizing area S3 intersection
1, its computing formula is: d
1=d
Core+ 2 (d
Outside the one-tenth-d
In the one-tenth), wherein, d
Outside the one-tenthBe production tube external diameter, d
In the one-tenthBe production tube internal diameter, d
CoreBe the plug external diameter.The diameter d of process island S2 and sizing area S3 intersection
2, the computing formula of this distance is: d
2=2c sin (α-γ)+d
1, wherein, α is the angle of dog central axis and rolling axis, γ is sizing area finishing angle, γ≤5 °, d
1Diameter for discharge zone S4 and sizing area S3 intersection.The diameter d of the intersection between deformed area S1 and the process island S2
3, the computing formula of this distance is: d
3=kd
2, wherein K is about 1～1.1 for the experience value; d
2Diameter for process island S2 and sizing area S3 intersection.
Annotate: d
3=kd
2In kd
2Be meant that k multiply by d
2, a=(d
4-d
32sin)/[(alpha-beta)] in 2sin (alpha-beta) be meant that 2 multiply by sin (alpha-beta).
Below the utility model is described in further detail,
Process island S2 is a process transition district (adopting circular cone and circular arc dovetail), and purpose is the particular section of setting for the number of rewelding that increases sizing area; Sizing area S3 is a circular cone district, and its conical surface becomes a little angle with rolling axis, help the surface quality that guarantees that pipe is rolling; Discharge zone S4 is a great circle segmental arc, in Fig. 1, and the S-material feeding region; The S1-deformed area; The S2-process island; The S3-sizing area; The S4-discharge zone; The 11 oblique lines string waviness curve of promptly making a comment or criticism.
The taper shape of roll is divided into five districts, i.e. material feeding region (sizing reduction section of nipping), deformed area (tube reducing wall-reducting section), process island (sudden change wall-reducting section), sizing area (tube reducing sizing section), discharge zone (the whole footpath of sizing section).Increase the sine bellows curve of the degree of depth 0.5mm identical, a width 2.932mm, fillet R6.25mm in the district of nipping, 57 ° of its coning angles with the deformed area;
Nipping to distinguish has 10 identical degree of depth 0.5mm, width 2.932mm, fillet R6.25mm sine bellows curve with the deformed area, and non-threaded, its objective is increases the required rolling feeding axial force of the operation of rolling.Nip the district Roughness Surface on Control at 0.4-0.6.The sizing reduction section of nipping: by the sinusoidal wave groove that roller surface has, give between roll and pipe enough frictional force is provided, be convenient to nipping of pipe.The stressed more complicated of this section, external diameter, wall thickness all are out of shape, and the metal slippage is violent.The tube reducing wall-reducting section: aggravated flow of metal, increased wall thickness reducing amount, the rolled piece temperature raises, metal grain generation serious distortion, fragmentation.The sudden change wall-reducting section: tube rolling deflection maximum, produce huge distortion heat and frictional heat, temperature reaches more than 400 ℃, and crystallization has again appearred in tissue, and the resistance to elevated temperatures of this section breaker roll and the anti-wear performance under the high temperature require very high.The tube reducing sizing section: deformation velocity slows down, and temperature is the highest, reaches 600 ℃～800 ℃, and crystal grain is further grown up, and this section breaker roll surface roughness is had relatively high expectations.The sizing expansion section: require roller surface precision height, circularity is good, and this section is in the spray position, and grain structure is stable, and copper pipe has the hole enlargement phenomenon along with roll forming changes simultaneously.
Can bring into play its effect to greatest extent in order to make between each active section of roll, nip district and the deformed area curve of roll are designed according to the sine bellows curve, and to the rolling angle β and the sizing area finishing angle γ of angle α, dog deformed area and the rolling axis of dog central axis and rolling axis.Blank 2 external diameters refer to outside the d base, blank 2 internal diameters refer in the d base, the production tube outside diameter d becomes outer, the production tube inner diameter d becomes interior and the plug external diameter refers to the d core.Annotate: production tube is the product after blank 2 processing.
Claims (11)
1, a kind of roll of three-roller planetary rolling mill, it is conical that this roll (1) is substantially, it is characterized in that: described roll (1) is divided into five zones from afterbody to head, be followed successively by: material feeding region (S), deformed area (S1), process island (S2), sizing area (S3) and discharge zone (S4), on roll (1) taper seat of deformed area (S1), radially and the compartment of terrain be distributed with the concavo-convex line (12) of annular, and the formed oblique line of axis projection (11) of this concavo-convex line (12) is a sine curve.
2, roll according to claim 1, it is characterized in that: vertical range (h) is 0.4～0.6mm between the peak of described concavo-convex line (12) and the re-entrant angle, and the width of concavo-convex line (P) is respectively 2.50～3.50mm, and the confluce between the concavo-convex line (12) is a circular arc, and the radius of this circular arc is the fillet of 6.0～7.0mm.
3, roll according to claim 2 is characterized in that: its tapering of described deformed area (S1) is 50～80 degree.
4, according to claim 1,2 or 3 described rolls, it is characterized in that: described concavo-convex line (12) is 9～13.
5, according to claim 1,2 or 3 described rolls, it is characterized in that: the width (a) of described deformed area (S1), its computing formula is: a=(d
4-d
32sin)/[(alpha-beta)], d wherein
4Be the big footpath of dog, d
3Be the diameter of the junctional area between deformed area (S1) and the process island (S2), α is the angle of dog central axis and rolling axis, and β is the rolling angle of dog deformed area (S1) and rolling axis, and the unit of width (a) is a millimeter.
6, according to the described roll of arbitrary claim in the claim 1 to 3, it is characterized in that: described process island (S2) width (b) is 7～10mm for value.
7, according to the described roll of arbitrary claim in the claim 1 to 3, it is characterized in that: described sizing area (S3) width (c) is 18～22mm.
8, according to the described roll of arbitrary claim in the claim 1 to 3, it is characterized in that: described discharge zone (S4) width (e) is 15～20mm.
9, according to the described roll of arbitrary claim in the claim 1 to 3, it is characterized in that: the diameter (d of described discharge zone (S4) and sizing area (S3) intersection
1), its computing formula is: d
1=d
Core+ 2 (d
Outside the one-tenth-d
In the one-tenth), wherein, d
Outside the one-tenthBe production tube external diameter, d
In the one-tenthBe production tube internal diameter, d
CoreBe the plug external diameter.
10, according to the described roll of arbitrary claim in the claim 1 to 3, it is characterized in that: the diameter (d of described process island (S2) and sizing area (S3) intersection
2), the computing formula of this distance is: d
2=2c sin (α-γ)+d
1, wherein, α is the angle of dog central axis and rolling axis, γ is sizing area finishing angle, γ≤5 °, d
1Be the diameter of discharge zone (S4) with sizing area (S3) intersection.
11, roll according to claim 5 is characterized in that: the diameter (d of the intersection between described deformed area (S1) and the process island (S2)
3), the computing formula of this distance is: d
3=kd
2, wherein K is about 1～1.1 for the experience value; d
2Be the diameter of process island (S2) with sizing area (S3) intersection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920115258U CN201385043Y (en) | 2009-03-12 | 2009-03-12 | Mill roll of three-roller planetary rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920115258U CN201385043Y (en) | 2009-03-12 | 2009-03-12 | Mill roll of three-roller planetary rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201385043Y true CN201385043Y (en) | 2010-01-20 |
Family
ID=41577565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920115258U Expired - Lifetime CN201385043Y (en) | 2009-03-12 | 2009-03-12 | Mill roll of three-roller planetary rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201385043Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862754B (en) * | 2009-04-17 | 2012-09-05 | 宁波金田铜管有限公司 | Roller of three-roller planetary rolling mill |
| CN104399753A (en) * | 2014-10-30 | 2015-03-11 | 广东龙丰精密铜管有限公司 | Novel roller of planetary rolling copper pipe tool |
-
2009
- 2009-03-12 CN CN200920115258U patent/CN201385043Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862754B (en) * | 2009-04-17 | 2012-09-05 | 宁波金田铜管有限公司 | Roller of three-roller planetary rolling mill |
| CN104399753A (en) * | 2014-10-30 | 2015-03-11 | 广东龙丰精密铜管有限公司 | Novel roller of planetary rolling copper pipe tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100120 Effective date of abandoning: 20090312 |