A knurling tool and processing method for roller surface

Abstract

The present invention relates to a knurling tool for rolling roller surfaces, comprising a tool holder and a knurling mechanism. The knurling mechanism is disposed at the front end of the tool holder. The knurling mechanism includes a tool holder and a knurling cutter body. The tool holder is connected to the tool holder. The knurling cutter body is generally ellipsoidal in shape and conforms to the concave surface of the rolling roller surface. The surface of the knurling cutter body is an uneven knurling surface. The knurling cutter body is provided with a rotating shaft along the axial direction. Bearings are provided on both sides of the tool holder. The ends of the rotating shaft are connected to the bearings on both sides of the tool holder, so that the knurling cutter body is located within the tool holder and can rotate freely within the tool holder. The present invention effectively improves the on-site working environment, reduces labor intensity and tool wear, and improves the processing efficiency of the rolling roller, the stability of the rolling roller passing steel, and the quality of the rolled steel.

Description

Technical Field

[0001] The present invention relates to the technical field of roller processing, and more particularly to a knurling tool and a processing method for the surface of a roller. Background Art

[0002] In the current steel rolling industry, roughing and medium rolling rollers are prone to slipping during the rolling process, which seriously affects the steel passing of the rolling mill. The current common treatment method is for professionals to spot weld the weld scars on the surface of the rollers to improve the hole's ability to bite the steel. However, this treatment method consumes a large amount of welding rods, causing serious smoke pollution, which has a great impact on the physical and mental health of the operators. Moreover, during the rolling process, the weld scars are easy to fall off and penetrate into the steel, seriously affecting the quality of steel rolling and production efficiency. When the rollers are repaired, the weld scars remaining on the surface of the rollers make the repair process difficult, easily damage the knife, and cause large tool wear. In addition, the process of removing the weld scars needs to be added during the roller repair process, and the repair process efficiency is low. Therefore, it is necessary to improve the existing roller surface. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a knurling tool and processing method for the surface of a rolling mill, which can effectively improve the on-site working environment, reduce labor intensity and tool wear, and improve the processing efficiency of the rolling mill, the stability of the rolling mill passing steel, and the quality of rolled steel.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A knurling tool for the surface of a rolling mill roll, comprising a tool holder and a knurling mechanism, wherein the knurling mechanism is arranged at the front end of the tool holder, and the knurling mechanism comprises a tool holder and a knurling cutter body, wherein the tool holder is connected to the tool holder, and the knurling cutter body is ellipsoidal in shape as a whole, adapted to the biting steel concave surface of the rolling mill roll surface, and the surface of the knurling cutter body is an uneven knurling surface, and the knurling cutter body is provided with a rotating shaft along the axial direction, and bearings are respectively provided on both sides of the tool holder, and the two ends of the rotating shaft are respectively connected to the bearings on both sides of the tool holder, so that the knurling cutter body is in the tool holder, and the knurling cutter body can rotate freely in the tool holder.

[0006] In one embodiment, the knurling tool further includes a positioning mechanism, which includes a measuring piece. The tool holder is provided with a positioning slot group on the top surfaces of both ends of the bearing. Specifically, the positioning slot group includes two slots, and the line connecting the two slots is perpendicular to the rotating shaft. The bottom surface of the measuring piece is provided on the docking protrusion corresponding to the positioning slot group, and the docking protrusion of the measuring piece is embedded in the positioning slot group to realize the connection between the measuring piece and the tool holder, and the measuring piece is perpendicular to the rotating shaft.

[0007] In one embodiment, the number of the measuring members is two, and the two measuring members are symmetrically arranged at both ends of the tool holder and extend toward the rolling roller.

[0008] In one embodiment, the measuring member includes a connecting sleeve and a moving rod, the opening of the connecting sleeve faces the rolling roller, and the moving rod is movably embedded in the connecting sleeve. A disc-shaped limiting portion is provided at the inner end of the moving rod in the connecting sleeve, and the outer diameter of the limiting portion is larger than the outer diameter of the moving rod. A contact portion is provided at the outer end of the moving rod, and the contact portion contacts the rolling roller.

[0009] In one embodiment, a sliding groove is provided on the surface of the connecting sleeve along the axial direction, a scale rod is provided between the connecting sleeve and the abutting portion, the scale rod is slidably connected to the sliding groove, and one end of the scale rod is fixedly connected to the abutting portion, and a scale bar is provided on the surface of the scale rod along the length direction, and the distance the moving rod is extended can be directly observed by observing the scale bar.

[0010] In one embodiment, the moving rod is further provided with a spring, and the spring is located between the abutting portion and the connecting sleeve, and the spring enables the abutting portion to automatically fit tightly against the transition surface of the roller.

[0011] Furthermore, a connecting rod is provided on the outside of the connecting sleeve, one end of which is hingedly connected to the surface of the connecting sleeve, and the other end of which is provided with a snap-fit ​​position, and a snap-fit ​​protrusion is provided on the edge side of the abutting portion. In the stored state, the connecting rod is rotated to the snap-fit ​​position to connect with the snap-fit ​​protrusion, thereby locking the abutting portion and the connecting sleeve. In the use state, the connecting rod is rotated to the snap-fit ​​position to separate from the snap-fit ​​protrusion, and the movable rod is extended under the action of the spring. It is easy to understand that when the measuring piece is connected to the tool holder, the measuring piece is maintained in the stored state. When the knurled cutter body contacts the roller, the connecting rod is rotated to allow the movable rod to freely extend and contact the roller.

[0012] A method for processing the surface of a roll, using the knurling tool mentioned above, comprises the following steps:

[0013] Install the roller on the lathe, place the knurling tool on the side of the roller, keep the tool handle perpendicular to the roller axis, make the knurling tool body contact the concave surface of the roller biting the steel, and then rotate the roller. During the rotation of the roller, the knurling tool body follows the rotation, so that the concave surface of the roller biting the steel forms a pattern, thereby increasing the friction between the roller and the steel workpiece.

[0014] In one embodiment, measuring pieces are provided at both ends of the tool holder. When the knurling cutter body contacts the steel-biting concave surface of the roll, the moving rod of the measuring piece extends out to contact the transition surface in front and behind the steel-biting concave surface. The position of the knurling tool is adjusted to keep the extended lengths of the two moving rods consistent. Then, the measuring piece is removed from the tool holder, the lathe drives the roll to rotate, and the knurling cutter body processes the steel-biting concave surface of the roll.

[0015] In summary, the present invention has the following beneficial effects:

[0016] The present invention utilizes the knurling principle to design and manufacture a knurling tool suitable for the concave surface of the roll biting the steel. It has the characteristics of process centralization, flexibility, high efficiency and environmental protection. It performs knurling treatment on the surface of the rough and medium rolling rolls. It has the advantages of low investment, simple operation, low labor intensity and good safety performance, effectively improves the on-site working environment, reduces labor intensity and tool loss, and improves the roll processing efficiency, roll steel passing stability and rolled steel quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the knurling tool of the present invention;

[0018] Figure 2 It is a schematic diagram of two adjacent rollers;

[0019] Figure 3 is a schematic diagram of a knurling tool with a measuring piece according to the present invention;

[0020] Figure 4 It is a schematic structural diagram of the measuring piece of the present invention.

[0021] In the figure: 1- tool handle, 2- tool holder, 3- knurled tool body, 4- rotating shaft, 5- bearing, 6- roller, 7- biting steel concave surface, 8- transition surface, 9- measuring piece, 10- connecting sleeve, 11- moving rod, 12- limiting part, 13- abutment part, 14- spring, 15- scale rod, 16- connecting rod, 17- clamping protrusion. DETAILED DESCRIPTION

[0022] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0023] It is worth noting that the directional words such as "upper" and "lower" involved in this article are all relative to the perspective of the drawings. They are only for the convenience of description and cannot be understood as limitations on the technical solution.

[0024] like Figure 1 As shown, the present invention provides a knurling tool for the surface of a rolling mill, comprising a tool holder 1 and a knurling mechanism, wherein the knurling mechanism is arranged at the front end of the tool holder 1, and the knurling mechanism comprises a tool holder 2 and a knurling cutter body 3, wherein the tool holder 2 is connected to the tool holder 1, and the knurling cutter body 3 is ellipsoidal in shape as a whole, and is adapted to the biting steel concave surface 7 on the surface of the rolling mill 6, and the surface of the knurling cutter body 3 is an uneven knurling surface, and the knurling cutter body 3 is provided with a rotating shaft 4 along the axial direction, and bearings 5 ​​are respectively provided on both sides of the tool holder 2, and the two ends of the rotating shaft 4 are respectively connected to the bearings 5 ​​on both sides of the tool holder 2, so that the knurling cutter body 3 is in the tool holder 2, and the knurling cutter body 3 can rotate freely in the tool holder 2.

[0025] The knurling cutter body 3 contacts the steel-biting concave surface 7 on the surface of the roller 6. The lathe drives the roller 6 to rotate, and the knurling cutter body 3 rotates accordingly, forming knurling patterns on the surface of the roller 6.

[0026] like Figure 2 As shown, the surface of the roller 6 is provided with a plurality of biting steel concave surfaces 7 distributed along the axial direction, and the adjacent biting steel concave surfaces 7 are transition surfaces 8. In order to ensure that the knurling cutter body 3 and the biting steel concave surfaces 7 are closely fitted, as shown in FIG. Figure 3 As shown, the knurling tool also includes a positioning mechanism, which includes a measuring piece 9. The tool holder 2 is provided with a positioning slot group on the top surfaces of both ends of the bearing 5. Specifically, the positioning slot group includes two slots, and the line connecting the two slots is perpendicular to the rotating shaft 4. The bottom surface of the measuring piece 9 is provided on the docking protrusion corresponding to the positioning slot group, and the docking protrusion of the measuring piece 9 is embedded in the positioning slot group to realize the connection between the measuring piece 9 and the tool holder 2, and the measuring piece 9 is perpendicular to the rotating shaft 4.

[0027] There are two measuring pieces 9, which are located at both ends of the tool holder 2 and extend toward the rolling roller 6. By observing the distance between the two measuring pieces 9 and the transition surface 8 of the rolling roller 6, it is judged whether the knurled cutter body 3 fits the biting steel concave surface 7 between the two planes.

[0028] In order to observe the contact between the knurling cutter body 3 and the roller 6 more intuitively, the present invention makes further improvements to the measuring piece 9, such as Figure 4 As shown, the measuring piece 9 includes a connecting sleeve 10 and a moving rod 11, the opening of the connecting sleeve 10 faces the roller 6, and the moving rod 11 is movably embedded in the connecting sleeve 10. The inner end of the moving rod 11 in the connecting sleeve 10 is provided with a disc-shaped limiting portion 12, and the outer diameter of the limiting portion 12 is larger than the outer diameter of the moving rod 11. The outer end of the moving rod 11 is provided with an abutment portion 13, and the abutment portion 13 is in contact with the roller 6.

[0029] When the knurling cutter body 3 contacts the rolling roller 6, the abutment portion 13 of the measuring piece 9 also contacts the transition surface 8 on the surface of the rolling roller 6, so that the abutment portion 13 is in close contact with the transition surface 8. By observing the distance that the moving rod 11 of the measuring piece 9 is extended, the fit between the knurling cutter body 3 and the concave surface 7 of the rolling roller 6 can be judged.

[0030] Furthermore, a sliding groove is provided on the surface of the connecting sleeve 10 along the axial direction, and a scale rod 15 is provided between the connecting sleeve 10 and the abutment portion 13. The scale rod 15 is slidably connected to the sliding groove, and one end of the scale rod 15 is fixedly connected to the abutment portion 13. A scale bar is provided on the surface of the scale rod 15 along the length direction, and the extension distance of the moving rod 11 can be directly observed by observing the scale bar.

[0031] The moving rod 11 is further sleeved with a spring 14 , which is located between the abutting portion 13 and the connecting sleeve 10 . The spring 14 enables the abutting portion 13 to automatically come into close contact with the transition surface 8 of the roller 6 .

[0032] Furthermore, to facilitate the daily storage and placement of the measuring piece 9 and to prevent the moving rod 11 from extending too far under the action of the spring 14, a connecting rod 16 is further provided on the outside of the connecting sleeve 10. One end of the connecting rod 16 is hinged to the surface of the connecting sleeve 10, and the other end of the connecting rod 16 is provided with a snap-fit ​​position. A snap-fit ​​protrusion 17 is provided on the edge side of the abutment portion 13. In the stored state, the connecting rod 16 rotates to the snap-fit ​​position and connects with the snap-fit ​​protrusion 17, thereby locking the abutment portion 13 with the connecting sleeve 10. In the use state, the connecting rod 16 rotates to the snap-fit ​​position and disengages from the snap-fit ​​protrusion 17, allowing the moving rod 11 to extend under the action of the spring 14. It is easy to understand that when the measuring piece 9 is connected to the tool holder 2, the measuring piece 9 is maintained in the stored state. When the knurled cutter body 3 contacts the roller 6, the connecting rod 16 is rotated to allow the moving rod 11 to freely extend and contact the roller 6.

[0033] Based on the above-mentioned knurling tool, the present invention also proposes a method for processing the surface of a roller, the steps of which are as follows:

[0034] Install the roller 6 on the lathe, place the knurling tool on the side of the roller 6, keep the tool handle 1 perpendicular to the axis of the roller 6, make the knurling tool body 3 contact the steel-biting concave surface 7 of the roller 6, and then rotate the roller 6. During the rotation of the roller 6, the knurling tool body 3 follows the rotation, so that the steel-biting concave surface 7 of the roller 6 forms a pattern, thereby increasing the friction between the roller 6 and the steel workpiece.

[0035] When measuring pieces 9 are set at both ends of the tool holder 2, when the knurling cutter body 3 contacts the steel-biting concave surface 7 of the rolling roller 6, the moving rod 11 of the measuring piece 9 extends out to contact the transition surface 8 before and after the steel-biting concave surface 7, and the position of the knurling tool is adjusted to keep the extended lengths of the two moving rods 11 consistent. Then, the measuring piece 9 is removed from the tool holder 2, and the lathe drives the rolling roller 6 to rotate, and the knurling cutter body 3 processes the steel-biting concave surface 7 of the rolling roller 6.

[0036] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A knurling tool for a roller surface, characterized in that: It comprises a knife handle (1) and a knurling mechanism, wherein the knurling mechanism is arranged at the front end of the knife handle (1); The knurling mechanism comprises a tool holder (2) and a knurling tool body (3), the tool holder (2) is connected to the tool handle (1), the knurling tool body (3) is ellipsoidal in shape as a whole, the surface of the knurling tool body (3) is an uneven knurling surface, a rotating shaft (4) is provided in the knurling tool body (3), bearings (5) are provided on both sides of the tool holder (2), the two ends of the rotating shaft (4) are connected to the bearings (5) on both sides of the tool holder (2), and the knurling tool body (3) can rotate freely in the tool holder (2); The tool holder (2) further comprises a positioning mechanism, wherein the positioning mechanism comprises a measuring member (9), the tool holder (2) is provided with a positioning slot group on the top surfaces of both ends of the bearing (5), the bottom surface of the measuring member (9) is provided on a docking protrusion corresponding to the positioning slot group, the docking protrusion of the measuring member (9) is embedded in the positioning slot group, thereby achieving connection between the measuring member (9) and the tool holder (2), and the measuring member (9) is perpendicular to the rotating shaft (4); The number of the measuring pieces (9) is two, and the two measuring pieces (9) are symmetrically arranged at both ends of the tool holder (2) and extend toward the roller (6); The measuring member (9) comprises a connecting sleeve (10) and a moving rod (11), wherein the opening of the connecting sleeve (10) faces the roller (6), and the moving rod (11) is movably embedded in the connecting sleeve (10). A disc-shaped limiting portion (12) is provided at the inner end of the moving rod (11) in the connecting sleeve (10), and the outer diameter of the limiting portion (12) is larger than the outer diameter of the moving rod (11). An abutting portion (13) is provided at the outer end of the moving rod (11), and the abutting portion (13) contacts the roller (6).

2. The knurling tool according to claim 1, characterized in that: A sliding groove is provided on the surface of the connecting sleeve (10) along the axial direction, a scale rod (15) is provided between the connecting sleeve (10) and the abutting portion (13), the scale rod (15) is slidably connected to the sliding groove, and one end of the scale rod (15) is fixedly connected to the abutting portion (13), and a scale bar is provided on the surface of the scale rod (15) along the length direction.

3. The knurling tool according to claim 2, characterized in that: The moving rod (11) is further sleeved with a spring (14), and the spring (14) is located between the abutment portion (13) and the connecting sleeve (10).

4. The knurling tool according to claim 3, characterized in that: A connecting rod (16) is further provided outside the connecting sleeve (10), one end of the connecting rod (16) is hinged to the surface of the connecting sleeve (10), the other end of the connecting rod (16) is provided with a snap-fit ​​position, and a snap-fit ​​protrusion (17) that cooperates with the snap-fit ​​position is provided on the edge side of the abutting portion (13).

5. A method for treating the surface of a roller, characterized in that: Using the knurling tool as described in claim 3, the steps are as follows: The roller (6) is mounted on a lathe, and a knurling tool is placed on the side of the roller (6), with the tool handle (1) being kept perpendicular to the axis of the roller (6), so that the knurling tool body (3) contacts the steel-biting concave surface (7) of the roller (6), and then the roller (6) is rotated. During the rotation of the roller (6), the knurling tool body (3) rotates accordingly, so that the steel-biting concave surface (7) of the roller (6) forms a pattern, thereby increasing the friction between the roller (6) and the steel workpiece.

6. The processing method according to claim 5, characterized in that When the knurling cutter body (3) contacts the steel-biting concave surface (7) of the roller (6), the moving rod (11) of the measuring piece (9) extends out to contact the transition surface (8) before and after the steel-biting concave surface (7). The position of the knurling cutter is adjusted to keep the lengths of the two moving rods (11) consistent, and then the measuring piece (9) is removed from the tool holder (2).

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