Four-roller cold rolling mill for titanium material 3D curved surface profiling material machining

Abstract

The utility model belongs to the technical field of cold-rolling mills, and particularly relates to a four-roller cold-rolling mill for machining titanium 3D curved surface profiling materials. Comprising a rolling wheel set and an auxiliary wheel set, the rolling wheel set comprises two rolling wheels, the auxiliary wheel set comprises two auxiliary wheels, the rim faces of the two rolling wheels are divided into large column sections and small column sections in the axial direction, the radial faces of the two sides of the two rolling wheels are located on the same horizontal plane, and the large column sections and the small column sections are matched in a staggered mode. A rolling area is formed between the large column section and the small column section on the mutually staggered and matched sides of the two rolling wheels, the rim surfaces of the two auxiliary wheels are respectively attached to the radial surfaces of the two rolling wheels in a rolling manner, and the auxiliary wheels are used for abutting and limiting the rolling wheels; when high-hardness materials are machined, the rolling wheels can be prevented from being stressed and misplaced, and the qualification rate of finished products is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of cold rolling mills, and in particular relates to a four-roller cold rolling mill for processing titanium 3D curved surface profiling materials. Background Art

[0002] Cold rolling mill is a kind of equipment widely used in the field of metal processing, which is used to produce cold-rolled metal sheets of various shapes and sizes. Cold rolling mill mainly includes pretreatment, feeding and positioning, rolling process, pressing, adjustment, cooling and processing, cutting and collection. General cold rolling mills include two-roll cold rolling mills and four-roll cold rolling mills. The four-roll cold rolling mill has become an important equipment in the field of metal processing due to its high-precision rolling, improved material surface quality, improved material performance and high-efficiency production. It plays an important role in various industrial fields, helping to achieve precise processing and production of metal materials.

[0003] The existing four-roller cold rolling mill, such as the four-roller cold rolling roller unit with authorization announcement number CN206122367U, includes a base, four support seats are arranged on the base, every two support seats are arranged perpendicular to each other, two parallel support walls are integrally processed on each support seat, a rolling groove is formed between the two support walls, a roller is horizontally arranged between the two support walls, each roller is rotatably connected to a rolling roller, a fixing groove for fixing the end of the roller is provided on the outer side of each support wall, and a fixing sleeve matching the end of the roller is provided in each fixing groove; the prior art simultaneously rolls the material through the rim surfaces of four groups of rollers, however, when processing alloy materials such as titanium, due to the high hardness of the material and when it is to be processed into a curved shape, the surface is squeezed simultaneously by four groups of rollers, which will cause the roller to be subjected to excessive force and dislocation during the processing, so the finished product often has a large tolerance, resulting in a low pass rate.

[0004] Based on this, it is necessary to design a four-roll cold rolling mill for processing titanium 3D curved surface profiling materials, so that it can avoid the force dislocation of the roller when processing materials with higher hardness and improve the qualified rate of finished products. Utility Model Content

[0005] In order to solve the problems in the prior art that rolling wheels are difficult to repair and replace and have high repair costs, the utility model provides a four-roller cold rolling mill for processing titanium 3D curved surface profiling materials.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] The utility model discloses a four-roller cold rolling mill for processing titanium 3D curved surface profiling materials, comprising a rolling wheel group and an auxiliary wheel group, wherein the rolling wheel group comprises two rolling wheels, and the auxiliary wheel group comprises two auxiliary wheels, the rim surfaces of the two rolling wheels are divided into a large column section and a small column section based on their axial direction, the radial surfaces on both sides of the two rolling wheels are both in the same horizontal plane, and the large column section and the small column section are staggered with each other, and a rolling area is formed between the large column section and the small column section on one side of the two rolling wheels that are staggered with each other, the rim surfaces of the two auxiliary wheels are respectively rolled and fitted on the radial surfaces of the two rolling wheels, and the auxiliary wheels are used for abutting and limiting the rolling wheels.

[0008] Furthermore, the rolling wheel and the auxiliary wheel both include a wheel seat, a wheel sleeve and a rotating shaft, the wheel seat is transmission-connected to the rotating shaft, the wheel sleeve is detachably connected to the wheel seat rim, and the inner side surface of the wheel sleeve is in contact with the wheel seat rim surface.

[0009] Furthermore, a baffle is extended outwardly along the plane direction of one side radial surface of the wheel seat, and the side surface of the baffle abuts against the side surface of the wheel sleeve.

[0010] Furthermore, a plurality of latching teeth are arranged on the rim surface of the wheel seat, and a plurality of latching grooves which are engaged with the latching teeth are arranged on the inner wall of the wheel sleeve.

[0011] Furthermore, the wheel sleeve and the wheel seat are fixed by bolt connection.

[0012] Furthermore, the rotating shafts of the rolling wheel and the auxiliary wheel are both transmission-connected with bevel gears, and two adjacent bevel gears are meshed with each other.

[0013] The beneficial effects of the utility model are as follows: the rim surfaces of the two rolling wheels are segmented structures, which are divided into large column sections and small column sections according to the size of the diameters; the connection parts of the large column sections and the small column sections on the two rolling wheels form a specific shape for rolling the material, which is used to supplement the rolling surfaces of the other two rolling wheels, and the positions of the other two rolling wheels are set as two auxiliary wheels, the rim surfaces of the two auxiliary wheels are cylindrical, and the rim surfaces of the two auxiliary wheels are rollingly fitted with the radial surfaces on both sides of the two rolling wheels, and the two auxiliary wheels are rollingly fitted on the side surfaces of the rolling wheels to prevent the two rolling wheels from being misaligned with each other, and the two auxiliary wheels rotate with the rotation of the two rolling wheels, and the two auxiliary wheels are abutted and limited to the two rolling wheels by the two auxiliary wheels, so that the two rolling wheels can be prevented from being misaligned with each other, thereby improving the accuracy of material processing and reducing tolerances. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0015] Figure 1It is a front structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the side structure of the roller pressing wheel of the utility model.

[0017] Legend: 1. Roller wheel; 2. Auxiliary wheel; 3. Rotating shaft; 4. Bevel gear; 5. Gear; 6. Baffle; 7. Wheel sleeve; 8. Wheel seat. DETAILED DESCRIPTION

[0018] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0019] like Figure 1-2 As shown, a four-roller cold rolling mill for processing titanium 3D curved surface profiling materials includes a rolling wheel group 1 and an auxiliary wheel group 2. The rolling wheel group and the auxiliary wheel group respectively include two rolling wheels 1 and two auxiliary wheels 2. The rim surfaces of the two rolling wheels 1 are segmented structures, which are divided into large column segments and small column segments according to the size of the diameter. The two radial surfaces of the two rolling wheels 1 are on the same horizontal plane, and the large column segments and the small column segments are arranged in an alternating manner, that is, the rim surface of the large column segment of one rolling wheel 1 is opposite to the rim surface of the small column segment of the other rolling wheel 1. It can also be regarded that the two rolling wheels 1 are centrally symmetrically arranged based on a center point, and then a rolling area is formed in the space between the large column segment and the small column segment on one side of the two rolling wheels 1, and the rolling area is used for rolling processing of the material.

[0020] However, when the material is rolled from two directions by only two rolling wheels 1, the processing can be completed well when it is used on materials with lower hardness. However, when it is used on materials with higher hardness such as titanium and the material needs to be rolled into a curved shape, the rolling of the two rolling wheels 1 is prone to misalignment after extrusion force due to the higher hardness of the material, that is, the rolling wheel 1 deviates from its original position, resulting in a larger tolerance of the processed material, and the four-roll cold rolling mill in the prior art cannot solve the problem of misalignment of the rolling wheel 1.

[0021] Therefore, in order to prevent the rolling wheels 1 from being misaligned during operation, the four rolling wheels used for rolling in the four-roller cold rolling mill in the prior art are changed to two, and the wheel grooves of the two rolling wheels 1 are improved. The connection parts of the large column sections and the small column sections on the two rolling wheels 1 are used to form a specific shape for rolling the material, which is used to supplement the rolling surfaces of the other two rolling wheels 1. In this embodiment, the large column sections and the small column sections of the two rolling wheels 1 form a step-like structure, which can be regarded as the radial surfaces of the large column sections and the small column sections are connected to each other, and the small column sections are connected to each other. The diameter is smaller than the large column segment. Since the two rolling wheels 1 are centrally symmetrically arranged based on a center point, the two rolling wheels 1 are respectively defined as the first rolling wheel 1 and the second rolling wheel 1. The large column segment rim surface of the first rolling wheel 1 rolls with the small column segment rim surface of the second rolling wheel 1, and a rolling zone is formed between the small column segment rim surface of the first rolling wheel 1 and the large column segment of the second rolling wheel 1. The specific shape of the rolling zone is set according to production needs, and the specific cross-sectional shape formed after the material is rolled is the shape of the rolling zone on its projection surface.

[0022] The positions of the other two roller pressing wheels 1 are set as two auxiliary wheels 2, the rim surfaces of the two auxiliary wheels 2 are cylindrical, and the rim surfaces of the two auxiliary wheels 2 roll and fit with the radial surfaces on both sides of the two roller pressing wheels 1. When the two roller pressing wheels 1 rotate and the material is roller pressed, due to the high hardness of the titanium material and when it is processed into a curved surface shape, the two auxiliary wheels 2 roll and fit on the side of the roller pressing wheel 1 to prevent the two roller pressing wheels 1 from being misaligned with each other, and the two auxiliary wheels 2 rotate with the rotation of the two roller pressing wheels 1. When an auxiliary wheel 2 abuts against the side surfaces of the two rolling wheels 1, the side walls of the large column sections of the two rolling wheels 1 close to the small column sections fit together. A pressure device can be provided on the base to which the two auxiliary wheels 2 are rotatably connected to apply pressure to the side surfaces of the rolling wheels 1. The side walls of the large column sections of the two rolling wheels 1 close to the small column sections fit together to prevent excessive pressure from causing the cross-section of the rolling area to become smaller. The two auxiliary wheels 2 limit the abutment of the two rolling wheels 1 to avoid misalignment of the two rolling wheels 1, thereby improving the accuracy of material processing and reducing tolerances.

[0023] Since the rolling wheel 1 is used to process high-hardness metals such as titanium, and the processed surface includes a curved surface, the rolling surface of the rolling wheel 1 is easily damaged after a long period of processing. Rolling high-hardness metal materials such as titanium will cause more serious wear of the rolling wheel 1. Therefore, the rolling wheel 1 needs to be replaced or maintained regularly. The rolling wheel 1 of the cold rolling mill in the prior art is directly connected to the rotating shaft 3. When the rolling wheel 1 needs to be maintained or replaced, the entire rolling wheel 1 needs to be removed or replaced, resulting in high maintenance costs. At the same time, when rolling materials of different shapes, it is necessary to replace the rolling wheel 1 with a different rolling surface shape, and the overall weight of the rolling wheel 1 is heavy, which also causes inconvenience to replace the rolling wheel 1 as a whole.

[0024] Therefore, in order to facilitate the rapid replacement of the rolling surface of the rolling wheel 1 after it is damaged, the structure of the rolling wheel 1 is divided into a wheel seat 8, a wheel sleeve 7 and a rotating shaft 3, and the wheel seat 8 is transmission-connected to the rotating shaft 3. The transmission connection means that the rotation of the rotating shaft 3 can drive the wheel seat to rotate. Specifically, the connection between the wheel seat 8 and the rotating shaft 3 can be connected by a key, and the wheel sleeve 7 can be detachably sleeved on the wheel seat 8, and the wheel seat 8 and the wheel sleeve 7 will not produce relative rotation. The inner side wall of the wheel sleeve 7 and the wheel rim surface of the wheel seat 8 fit each other. When installing, the wheel sleeve 7 is slid into the wheel seat 8, so that the wheel sleeve 7 will not produce relative rotation based on its radial surface. The wheel sleeve 7 is then fixed with bolts to prevent displacement based on its axial surface direction, and the wheel sleeve 7 has a certain thickness to prevent deformation of the rolling wheel 1 when rolling the material. When the wheel sleeve 7 on the outside of the wheel seat 8 is worn, only the wheel sleeve 7 needs to be replaced. Since only the wheel sleeve 7 needs to be replaced, the cost is relatively lower. At the same time, the weight during the replacement process is lighter and the replacement is more convenient. The replaceable method of the wheel sleeve 7 can not only be used after the wheel sleeve 7 is damaged, but also when the material needs to be processed into different shapes, the wheel sleeve 7 with different rolling surfaces can be replaced.

[0025] In order to prevent the wheel sleeve 7 from being displaced along the axial direction of the wheel seat 8 during processing after installation, a baffle 6 is extended on the plane of the radial surface of the wheel seat 8 so that the diameter of the baffle 6 is larger than the inner diameter of the wheel sleeve 7. After the wheel sleeve 7 is sleeved on the wheel seat 8, the side surface of the wheel sleeve 7 is abutted against the baffle 6, and the baffle 6 is used to limit the horizontal direction of the wheel sleeve 7.

[0026] After the wheel sleeve 7 is sleeved on the wheel seat 8, in addition to sliding in the horizontal direction, it may also rotate relative to the wheel seat 8. During the processing, the rolling wheel 1 not only rolls the material, but also needs to rotate to make the material move in one direction after rolling. If the wheel sleeve 7 and the wheel seat 8 rotate relative to each other, the wheel seat 8 will not be able to move the material by driving the wheel sleeve 7. Therefore, it is necessary to ensure the relative stillness between the wheel sleeve 7 and the wheel seat 8. To do this, a number of latch teeth 5 are provided on the wheel seat 8, and the latch teeth 5 are provided on the rim surface of the wheel seat 8, and the latch teeth 5 are all perpendicular to the radial surface of the wheel seat 8. The wheel sleeve 7 is provided with a latch groove that cooperates with the latch teeth 5. During installation, the latch groove on the wheel sleeve 7 is aligned with the latch teeth 5 and then inserted into the wheel seat 8 along its radial direction to complete the installation. Then, the wheel seat 8 and the wheel sleeve 7 will not rotate relative to each other.

[0027] After the wheel sleeve 7 is installed on the wheel seat 8, one side of the wheel sleeve 7 abuts against the baffle 6 of the wheel seat 8, but the other side of the wheel sleeve 7 has not been limited, so it is necessary to fix the wheel sleeve 7 with bolts, and connect the wheel sleeve 7 and the wheel seat 8 with bolts to prevent the wheel sleeve 7 from falling off during the rolling process.

[0028] During the rotation of the roller wheel 1, the auxiliary wheel 2 is always in contact with the two radial surfaces of the roller wheel 1. If the auxiliary wheel 2 remains stationary, the roller wheel 1 and the auxiliary wheel 2 will always move relative to each other, which will generate huge noise after friction. At the same time, the mutual friction will reduce the rotational torque of the roller wheel 1. Therefore, it is necessary to make the auxiliary wheel 2 rotate synchronously with the roller wheel 1. Therefore, bevel gears 4 are transmission-connected on the auxiliary wheel 2 and the rotating shaft 3 of the roller wheel 1. Adjacent bevel gears 4 are meshed with each other to make the auxiliary wheel 2 rotate synchronously with the roller wheel 1 to reduce noise. At the same time, in order to realize the rotation of the roller wheel 1 and the auxiliary wheel 2, any one of the rotating shafts or 3 can be connected to an external driving device to realize rotation.

[0029] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A four-roller cold rolling mill for processing titanium 3D curved surface profiling materials, characterized in that: It includes a rolling wheel group and an auxiliary wheel group, the rolling wheel group includes two rolling wheels, the auxiliary wheel group includes two auxiliary wheels, the rim surfaces of the two rolling wheels are divided into a large column section and a small column section based on their axial direction, the radial surfaces on both sides of the two rolling wheels are in the same horizontal plane, and the large column section and the small column section are staggered with each other, and a rolling area is formed between the large column section and the small column section on one side of the two rolling wheels that are staggered with each other, the rim surfaces of the two auxiliary wheels are respectively rolled and fitted on the radial surfaces of the two rolling wheels, and the auxiliary wheels are used for abutting and limiting the rolling wheels.

2. A four-roller cold rolling mill for processing titanium 3D curved surface profiling materials according to claim 1, characterized in that: The rolling wheel and the auxiliary wheel both include a wheel seat, a wheel sleeve and a rotating shaft. The wheel seat is transmission-connected to the rotating shaft, the wheel sleeve is detachably connected to the wheel seat rim, and the inner side surface of the wheel sleeve fits with the wheel seat rim surface.

3. A four-roller cold rolling mill for processing titanium 3D curved surface profiling materials according to claim 2, characterized in that: A baffle is extended outwardly from one radial surface of the wheel seat along its plane direction, and the side surface of the baffle abuts against the side surface of the wheel sleeve.

4. The four-roller cold rolling mill for processing titanium 3D curved surface profiling materials according to claim 2, characterized in that: A plurality of latching teeth are arranged on the wheel seat rim surface, and a plurality of latching grooves for latching with the latching teeth are arranged on the inner wall of the wheel sleeve.

5. The four-roller cold rolling mill for processing titanium 3D curved surface profiling materials according to claim 2, characterized in that: The wheel sleeve and the wheel seat are connected and fixed by bolts.

6. The four-roller cold rolling mill for processing titanium 3D curved surface profiling materials according to claim 2, characterized in that: The rotating shafts of the rolling wheel and the auxiliary wheel are both transmission-connected with bevel gears, and two adjacent bevel gears are meshed with each other.

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