CN216728822U - Roller guide plate for cross wedge rolling mill - Google Patents
Roller guide plate for cross wedge rolling mill Download PDFInfo
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- CN216728822U CN216728822U CN202220116751.XU CN202220116751U CN216728822U CN 216728822 U CN216728822 U CN 216728822U CN 202220116751 U CN202220116751 U CN 202220116751U CN 216728822 U CN216728822 U CN 216728822U
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Abstract
The utility model provides a roller baffle for wedge cross rolling mill, the baffle is located one side of treating the rolling blank between top roll, the bottom roll, the baffle includes the baffle body, the inside water course that is equipped with of baffle body, the baffle body is close to one side tip embedded of blank and has the roller, leave the gap between roller and the baffle body end contact surface, this gap and water course UNICOM, the water course end is equipped with the check valve, the roller both ends are equipped with thrust bearing. The guide plate can reduce the friction force between the workpiece and the guide plate, prolong the service life of the guide plate and reduce the rolling defects of the workpiece.
Description
Technical Field
The utility model relates to the technical field of cross wedge rolling mills, in particular to a roller guide plate for a cross wedge rolling mill.
Background
The cross wedge rolling mill is generally used for rolling shaft parts, the upper and lower parts of the mill are respectively provided with a roller, and the rolled parts are positioned between the two rollers. Because the roller drives the camshaft to rotate during rolling, the camshaft can be pushed to one side by the roller, and the left side and the right side of a rolled part of the rolling mill are respectively provided with a guide plate to keep the position of the part unchanged, thereby ensuring the stability of the rolling process. Because the guide plate is usually made of steel plates, the rolled parts can rub against the guide plate when rotating, and then scratch the surfaces of the parts to cause defects, and the friction resistance can also cause adverse effects on the rolling process. However, the guide plate provided with the segmented rollers can be scratched during rolling and can also cause accidents that the blank is pressed against the end parts of the rollers.
SUMMERY OF THE UTILITY MODEL
In view of the above disadvantages and shortcomings of the prior art, the present invention provides a roller guide plate for a cross wedge rolling mill, which reduces the friction between a workpiece and the guide plate, prolongs the service life of the guide plate, and reduces the rolling defects of the workpiece.
In order to achieve the purpose, the utility model adopts the main technical scheme that:
the utility model provides a roller baffle for wedge cross rolling mill, the baffle is located one side of treating the rolling blank between top roll, the bottom roll, the baffle includes the baffle body, the inside water course that is equipped with of baffle body, the baffle body is close to one side tip embedded of blank and has the roller, leave the gap between roller and the baffle body end contact surface, this gap and water course UNICOM, the water course end is equipped with the check valve, the roller both ends are equipped with thrust bearing.
Furthermore, the surfaces of the guide plate body close to the upper roller and the lower roller are arc-shaped and are respectively matched with the outer circles of the upper roller and the lower roller.
Furthermore, the contact surface of the guide plate body and the roller is arranged into an arc shape matched with the excircle of the roller, a wear-resistant antifriction coating is arranged on the arc shape, and the outer surface of the roller is provided with the wear-resistant antifriction coating.
Furthermore, the water channels extend from the contact ends of the guide plate body and the rollers to the opposite ends, and a plurality of water channels are arranged along the axial direction of the rollers.
Furthermore, the two ends of the roller are in clearance fit with a copper sleeve arranged on the guide plate body, an end cover is arranged on the outer side of the thrust bearing, and the end cover is fixedly connected with the guide plate body through bolts.
Furthermore, the inner circle of the copper sleeve is an eccentric circle, so that the gap between the roller and the side, close to the guide plate body, of the inner circle of the copper sleeve is larger than the gaps in other directions under the support of the roller under the high-pressure hydrostatic pressure flowing out of the water channel.
Furthermore, the clearance between the roller and one side of the inner circle of the copper sleeve close to the guide plate body is larger than 0.5mm, and the clearance between the roller and the inner circle of the copper sleeve in other directions is 0.05 mm.
Furthermore, an end surface water channel is arranged on an arc-shaped surface of the end part of the guide plate body, which is in contact with the roller.
Furthermore, the end surface water channels are uniformly distributed on the arc-shaped surface of the end part of the guide plate body, which is contacted with the roller, so that the roller can uniformly bear the static pressure supporting force of the high-pressure water flowing out of the water channels.
The utility model has the beneficial effects that:
1. the roller is arranged at the front end of the guide plate, so that the friction between a workpiece and the guide plate can be reduced, and the extrusion defect is avoided.
2. The contact surface of the guide plate body and the roller is processed into an arc shape, and the contact surface is coated with the wear-resistant and antifriction coating, so that the roller has small friction force when rolling, and meanwhile, the arc-shaped contact surface of the guide plate body has enough service life.
3. The net-shaped water tank is processed on the arc-shaped surface of the guide plate body in contact with the roller, high-pressure water enters the water tank through the one-way valve and the water channel, static pressure support is formed between the roller and the arc-shaped surface, the roller is cooled simultaneously, friction between the roller and the arc-shaped contact surface is further reduced, the service life of the arc-shaped contact surface is prolonged, the roller is cooled in time, and the phenomenon that the roller is deformed due to overhigh temperature or the roller is welded with the arc-shaped contact surface due to high temperature is avoided.
4. The two ends of the roller are matched with the guide plate body through the copper sleeve, an eccentric circle is manually scraped at the matching position of the inner circle of the copper sleeve and the roller, so that the gap of one side of the roller, which is close to the guide plate body, under the support of high-pressure hydrostatic pressure exceeds 0.5mm, and the gaps of other directions are about 0.05mm, therefore, the thrust of the roller, which is applied to a contact workpiece, is completely born by the wear-resistant antifriction coating, and part of the vertical movement force and the whole rebound force are born by the copper sleeve.
5. An end surface water channel is processed on the arc-shaped contact surface of the guide plate body and the roller, and high-pressure water enters the end surface water channel through the water channel to form effective static pressure support on the contact surface, so that the friction force of the contact surface is reduced.
6. The surfaces of the guide plate body close to the upper roller and the lower roller are arc-shaped and matched with the excircle of the roller, and the guide plate body is not in contact with the excircle of the roller, so that the service life of the guide plate and the service life of the upper roller and the service life of the lower roller are prolonged.
Drawings
FIG. 1 is a schematic view of the position of a guide plate according to the present invention;
FIG. 2 is a schematic view of a guide plate according to the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 1;
FIG. 4 is a schematic top view of the guide plate;
FIG. 5 is an enlarged view of the structure at B in FIG. 4;
FIG. 6 is a schematic structural diagram of a gap between a copper sleeve and a roller under the static pressure support of high-pressure water;
FIG. 7 is a schematic view of the end face water channel structure of the contact surface of the guide plate body and the rollers.
The components in the figure: the roller is characterized in that 1 is an upper roller, 2 is a lower roller, 3 is a blank, 4 is a guide plate, 4-1 is a guide plate body, 4-2 is a roller, 4-3 is a water channel, 4-4 is a one-way valve, 5 is a copper sleeve, 6 is a thrust bearing, 7 is an end cover, 8 is a bolt and 9 is an end surface water channel.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
The roller guide plate for the wedge cross mill is positioned on one side of a blank to be rolled between an upper roller and a lower roller and comprises a guide plate body 4-1, a water channel 4-3 is arranged inside the guide plate body 4-1, a roller 4-2 is embedded in the end part, close to the blank, of one side of the guide plate body 4-1, a gap is reserved between the roller 4-2 and the contact surface of the end part of the guide plate body and communicated with the water channel 4-3, a check valve 4-4 is arranged at the tail end of the water channel 4-3, and thrust bearings 6 are arranged at two ends of the roller 4-2.
The surfaces of the guide plate body 4-1 close to the upper roller and the lower roller are respectively arranged into arc shapes matched with the outer circles of the upper roller and the lower roller, and the arc shapes are not contacted with each other.
The surface of the guide plate body 4-1 close to the roller 4-2 is arranged into an arc shape matched with the excircle of the roller 4-2, a wear-resistant antifriction coating is arranged on the arc shape, and a wear-resistant antifriction coating is arranged on the outer surface of the roller 4-2.
The water channel 4-3 extends from the end, which is contacted with the roller 4-2, of the guide plate body 4-1 to the opposite end, and a plurality of water channels 4-3 are arranged along the axial direction of the roller 4-2.
Two ends of the roller 4-2 are in clearance fit with a copper sleeve 5 arranged on the guide plate body 4-1, an end cover 7 is arranged on the outer side of the thrust bearing 6, and the end cover 7 is fixedly connected with the guide plate body 4-1 through a bolt 8.
The inner circle of the copper sleeve 5 is an eccentric circle, so that the gap between the inner circle of the roller 4-2 and the inner circle of the copper sleeve 5 close to one side of the guide plate body 4-1 is larger than the gaps in other directions under the support of high-pressure hydrostatic pressure flowing out of the water channel 4-3.
The gap between the inner circles of the roller 4-2 and the copper sleeve 5 and the side close to the guide plate body 4-1 is larger than 0.5mm, and the gap between the inner circles of the roller and the copper sleeve in other directions is 0.05 mm.
An end surface water channel 9 is arranged on the arc-shaped surface of the end part of the guide plate body 4-1, which is contacted with the roller 4-2.
The end surface water channels 9 are uniformly distributed on the arc-shaped surface of the end part of the guide plate body 4-1, which is contacted with the roller 4-2, so that the roller 4-2 can uniformly bear the static pressure supporting force of the high-pressure water flowing out of the water channel 4-3.
Example 1:
as shown in fig. 1, the present invention provides a roller guide plate for a cross wedge rolling mill, which is used when the cross wedge rolling mill rolls a shaft-like part, as shown in fig. 1, is located at one side of a blank 3 to be rolled between an upper roll 1 and a lower roll 2, and is used for keeping the position of the part constant during rolling, thereby ensuring the stability of the rolling process.
The guide plate comprises a guide plate body 4-1, a roller 4-2 is embedded in one end, close to a blank 3, of the guide plate body 4-1, the contact surface of the guide plate body 4-1 and the roller 4-2 is processed into arc shapes matched with each other, and wear-resistant antifriction coatings are coated on the surfaces of the guide plate body 4-1 and the roller 4-2 to form a rolling bearing. And a gap is reserved between the contact surfaces of the roller 4-2 and the end part of the guide plate body 4-1, and the gap is communicated with the water channel 4-3. High-pressure water enters the gap from the water channel 4-3 to form static pressure support for the roller 4-2. As shown in figure 4, the water channel 4-3 extends from the end, which is contacted with the roller 4-2, of the guide plate body 4-1 to the opposite end, a plurality of water channels 4-3 are arranged along the axial direction of the roller 4-2, and the tail end of each water channel 4-3 is provided with a one-way valve 4-4.
As shown in FIG. 3, the surfaces of the guide plate body 4-1 close to the upper roller 1 and the lower roller 2 are arranged into arc shapes matched with the outer circles of the upper roller and the lower roller respectively, and are not contacted with each other, so that the contact damage between the guide plate and the rollers is prevented.
As shown in fig. 4-5, thrust bearings 6 are arranged at two ends of the roller 4-2, end covers 7 are arranged outside the thrust bearings 6, and the end covers 7 are fixedly connected with the guide plate body 4-1 through bolts 8. The two ends of the roller 4-2 are in clearance fit with the copper bush 5 arranged on the guide plate body 4-1, as shown in fig. 6, the inner circle of the copper bush 5 is manually scraped to form an eccentric circle, so that the clearance a between the roller 4-2 and one side of the inner circle of the copper bush 5 close to the guide plate body 4-1 is larger than 0.5mm under the support of high-pressure hydrostatic pressure flowing out of the water channel 4-3, and the clearance b in other directions is 0.05 mm. Therefore, the thrust force of the roller contacting the workpiece is completely born by the wear-resistant antifriction coating, and part of the up-and-down movement force and the whole rebound force are born by the copper sleeve 5.
The arc-shaped surface of the end part of the guide plate body 4-1, which is contacted with the roller 4-2, is provided with an end surface water channel 9, as shown in fig. 7, the end surface water channel 9 is uniformly distributed on the arc-shaped surface of the end part of the guide plate body 4-1, which is contacted with the roller 4-2, so that the roller 4-2 uniformly bears the static pressure supporting force of the high-pressure water flowing out of the water channel 4-3. The end surface water channels 9 are uniformly distributed along the axial direction of the guide rolling column 4-2, can be in a uniform net shape or are arranged in a subsection way as shown in figure 7, each section is distributed in a shape similar to a Chinese character 'wang' by taking the outlet of each water channel 4-3 as the center, and the upper, middle and lower three transverse water channels are connected through a plurality of longitudinal water channels communicated with the transverse water channels. Or an end surface water channel with other shapes, as long as the high-pressure water can support the roller 4-2 integrally to form a uniform and stable water pressure support. The wear-resistant antifriction coating is the prior art.
During rolling, as shown in fig. 1, a blank 3 and a guide plate are positioned between an upper roller 1 and a lower roller 2, the upper roller and the lower roller rotate oppositely to drive the blank 3 to rotate, a roller 4-2 of the guide plate rotates simultaneously, high-pressure cooling water is communicated between the roller 4-2 and a guide plate body 4-1, and the effects of cooling the roller and supporting static pressure are achieved simultaneously. The high-pressure water passes through the check valve 4-4 and reaches the end surface water channel 9 processed on the arc surface between the guide plate body 4-1 and the roller 4 through the water through hole, and a static pressure support is formed at the position, so that the friction force between the guide plate body 4-1 and the roller 4-2 is reduced, and the roller is cooled at the same time. The axial play force of the roller 4-2 is transmitted to the end cover 7 by the thrust bearing 6.
Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and not to be construed as limiting the present invention and that those skilled in the art may make modifications, alterations, substitutions and alterations to the above embodiments within the scope of the present invention.
Claims (9)
1. A roller guide plate for a cross wedge rolling mill, said guide plate being located on one side of a blank to be rolled between an upper roll and a lower roll, characterized in that: the guide plate comprises a guide plate body (4-1), a water channel (4-3) is arranged inside the guide plate body (4-1), a roller (4-2) is embedded in the end portion, close to a blank, of one side of the guide plate body (4-1), a gap is reserved between the roller (4-2) and the contact surface of the end portion of the guide plate body and communicated with the water channel (4-3), a one-way valve (4-4) is arranged at the tail end of the water channel (4-3), and thrust bearings (6) are arranged at two ends of the roller (4-2).
2. A roller guide for a wedge cross mill as set forth in claim 1, wherein: the surfaces of the guide plate body (4-1) close to the upper roller and the lower roller are arc-shaped and are respectively matched with the outer circles of the upper roller and the lower roller.
3. A roller guide for a wedge cross mill as set forth in claim 1, wherein: the contact surface of the guide plate body (4-1) and the roller (4-2) is arranged to be arc-shaped matched with the excircle of the roller (4-2), a wear-resistant antifriction coating is arranged on the arc-shaped contact surface, and a wear-resistant antifriction coating is arranged on the outer surface of the roller (4-2).
4. A roller guide for a wedge cross mill as set forth in claim 1, wherein: the water channels (4-3) extend from the contact end of the guide plate body (4-1) and the roller (4-2) to the opposite end, and a plurality of water channels (4-3) are arranged along the axial direction of the roller (4-2).
5. A roller guide for a wedge cross mill as set forth in claim 1, wherein: two ends of the roller (4-2) are in clearance fit with a copper sleeve (5) arranged on the guide plate body (4-1), an end cover (7) is arranged on the outer side of the thrust bearing (6), and the end cover (7) is fixedly connected with the guide plate body (4-1) through a bolt (8).
6. A roller guide for a wedge cross mill according to claim 5, wherein: the inner circle of the copper sleeve (5) is an eccentric circle, so that the gap between the inner circle of the roller (4-2) and the inner circle of the copper sleeve (5) close to one side of the guide plate body (4-1) is larger than the gap between the inner circle of the roller (4-2) and the inner circle of the copper sleeve (5) in other directions under the support of high-pressure hydrostatic pressure flowing out of the water channel (4-3).
7. A roller guide for a wedge cross mill according to claim 6, wherein: the clearance between the roller (4-2) and the inner circle of the copper sleeve (5) at one side close to the guide plate body (4-1) is more than 0.5mm, and the clearance in other directions is 0.05 mm.
8. A roller guide for a wedge cross mill as set forth in claim 1, wherein: and an end surface water channel (9) is arranged on the arc-shaped surface of the end part of the guide plate body (4-1) contacted with the roller (4-2).
9. A roller guide for a cross wedge rolling mill according to claim 8, wherein: the end surface water channels (9) are uniformly distributed on the arc-shaped surface of the end part of the guide plate body (4-1) contacted with the roller (4-2), so that the roller (4-2) uniformly bears the static pressure supporting force of the high-pressure water flowing out of the water channel (4-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220116751.XU CN216728822U (en) | 2022-01-18 | 2022-01-18 | Roller guide plate for cross wedge rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220116751.XU CN216728822U (en) | 2022-01-18 | 2022-01-18 | Roller guide plate for cross wedge rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216728822U true CN216728822U (en) | 2022-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220116751.XU Active CN216728822U (en) | 2022-01-18 | 2022-01-18 | Roller guide plate for cross wedge rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216728822U (en) |
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- 2022-01-18 CN CN202220116751.XU patent/CN216728822U/en active Active
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