Ceramic roll clamping device

Abstract

The utility model discloses a kind of ceramic roller clamping devices, comprising: roller body;Supporting assembly is arranged in the both sides of the roller body;Any one supporting assembly is formed with a cavity in the middle part, at least two contact parts are provided in the inside of the cavity, the contact part is abutted with one end of the roller body, when the roller body rotates, the both ends of the roller body are supported by two supporting assemblies;The device is supported by two contact parts on the circumference of roller by setting supporting assembly on the both sides of roller body, cancels the positioning support mode by existing through centre hole, and the centre hole is only used for coaxial positioning, reduces the error caused by stress abrasion of centre hole, ensures the machining precision of subsequent roller.

Description

Technical Field

[0001] This utility model relates to the field of rolling mill processing equipment, and in particular to a ceramic rolling mill clamping device. Background Technology

[0002] When machining shaft parts such as rolls, two centers are mainly used for clamping. The workpiece is positioned and supported by the center holes at both ends. When the workpiece is rotated, it is machined. The centers of the machining equipment bear part of the weight of the workpiece, the axial cutting force, and the radial cutting force. For heavier workpieces, the pressure on the centers is too great, which can easily aggravate the wear of the centers and center holes, or even damage the centers or center holes, thus limiting the ability to machine large and heavy shaft parts. The positioning accuracy of the workpiece depends on the shape accuracy, angle accuracy, surface roughness, and coaxiality of the center holes at both ends. Any defects in the center holes, such as wear, bumps, inaccurate angles, misalignment, burrs, or chips, will be directly reflected in the machined workpiece, resulting in positioning errors and runout errors. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a ceramic roll clamping device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a ceramic roll clamping device, comprising: Roll body; Support assemblies are provided on both sides of the roll body; A cavity is formed in the middle of any of the support components, and at least two contact portions are provided inside the cavity. The contact portions abut against one end of the roll body. When the roll body rotates, the two ends of the roll body are supported by the two support components.

[0005] As a further description of the above technical solution: the support assembly includes a base and a mounting cover, the base is hinged to one end of the mounting cover, and the other end of the mounting cover is connected to the base by screws.

[0006] As a further description of the above technical solution: the base is provided with a V-shaped groove, the mounting cover is bent along the side opposite to the base, and the base and the mounting cover cooperate to form the cavity in the middle.

[0007] As a further description of the above technical solution: the two contact portions are provided on both sides of the V-shaped groove of the base, so that the two contact portions are arranged opposite to each other. The contact portion includes a support fixture, and the bottom of the support fixture has a waist-shaped hole, which is connected to the base by screws.

[0008] As a further description of the above technical solution: the support fixture has a groove, a support block and a pressing pad are provided in the groove, a protrusion is provided on one side of the support block, the protrusion is in clearance fit with the groove, and the pressing pad is provided in the gap between the protrusion and the groove.

[0009] As a further description of the above technical solution: the mounting cover has a threaded hole, through which a clamping screw is installed, and the clamping screw abuts against the upper side of the roll body.

[0010] As a further description of the above technical solution: a ceramic cylinder is sleeved in the middle of the roll body.

[0011] As a further description of the above technical solution: the two end faces of the roll body are provided with center holes, which are used to abut against the center of external equipment to drive the roll body to rotate.

[0012] As a further description of the above technical solution: the material of the support block is Babbitt alloy.

[0013] It also includes an installation method for a ceramic roll clamping device, the installation method being applicable to the clamping device described in any of the above technical solutions, comprising: S1. Adjust the relative position of the two bases so that the two bases are at the same horizontal position; S2. Install the support fixture, support block and clamping pad on the base to form a contact part; S3. Place one end of the roll body on the two contact parts, connect the base to the mounting cover to form a support assembly, and support both ends of the roll body through the two support assemblies to complete the installation of the clamping device.

[0014] The above technical solution has the following advantages or beneficial effects: By setting support components on both sides of the roll body, the existing method of positioning and supporting through the center hole is eliminated. The circumferential surface of the roll is supported by two contact parts, and the center hole is only used for coaxial positioning. This reduces the error caused by the center hole due to force wear and ensures the subsequent processing accuracy of the roll. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1This is a perspective view of the clamping device proposed in this utility model; Figure 2 This is a side view of the clamping device proposed in this utility model; Figure 3 This is an exploded view of the support component in this utility model; Figure 4 This is a flowchart of the installation method proposed in this utility model.

[0017] Legend: 1. Roll body; 11. Ceramic cylinder; 12. Center hole; 2. Contact part; 21. Support fixture; 211. Waist-shaped hole; 212. Groove; 22. Support block; 221. Protrusion; 23. Pressure pad; 3. Base; 4. Mounting cover; 41. Pressure screw. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figures 1-3 An embodiment of this utility model provides a ceramic roll clamping device, comprising: a roll body 1; support components disposed on both sides of the roll body 1; a cavity is formed in the middle of any support component, and at least two contact parts 2 are disposed inside the cavity, the contact parts 2 abutting against one end of the roll body 1, and when the roll body 1 rotates, the two ends of the roll body 1 are supported by the two support components.

[0020] In this embodiment, the support components on both sides of the roll body 1 abut against the ends of the roll body 1 through at least two contact parts 2, forming a four-point support. The contact parts 2 distributed symmetrically on both sides support the roll body 1 upward. The top hole 12 is only used for coaxial positioning, reducing the error caused by the wear of the top hole 12 due to force, and ensuring the subsequent processing accuracy of the roll body 1.

[0021] The support assembly includes a base 3 and a mounting cover 4. The base 3 is hinged to one end of the mounting cover 4, and the other end of the mounting cover 4 is connected to the base 3 by screws. The base 3 is provided with a V-shaped groove, and the mounting cover 4 is bent along the side opposite to the base 3. The base 3 and the mounting cover 4 cooperate to form a cavity in the middle.

[0022] In this embodiment, the support assembly consists of a base 3 and a mounting cover 4 connected by hinges and screws, forming an openable cavity structure. The V-shaped groove of the base 3 matches the bent structure of the mounting cover 4, and the shape of the cavity is adapted to the end contour of the roll body 1, ensuring the fitting accuracy between the contact part 2 and the roll body 1. The hinge design allows the mounting cover 4 to rotate and open, facilitating the quick placement and removal of the roll body 1. The screw connection limits the position of the mounting cover 4, preventing the support assembly from loosening when the roll body 1 rotates.

[0023] Two contact parts 2 are respectively located on both sides of the V-shaped groove of the base 3, so that the two contact parts 2 are arranged opposite each other. The contact part 2 includes a support fixture 21, and the bottom of the support fixture 21 has an oblong hole 211, which is connected to the base 3 by screws.

[0024] In this embodiment, a waist-shaped hole 211 is provided at the bottom of the support fixture 21. By adjusting the relative position of the waist-shaped hole 211 and the screw, the position of the support fixture 21 at the V-groove slope of the base 3 is adjusted, which facilitates position adjustment during installation and ensures that both ends of the roll body 1 are at the same horizontal position at the support assembly. The V-groove support at both ends can withstand the weight of shaft products, effectively reducing the bending deformation and vibration of the roll body 1, ensuring the positioning accuracy and processing quality of the roll body 1, and improving the processing capability of large and heavy shaft parts.

[0025] The support fixture 21 has a groove 212, a support block 22 and a clamping pad 23 are provided in the groove 212, a protrusion 221 is provided on one side of the support block 22, the protrusion 221 is in clearance fit with the groove 212, and the clamping pad 23 is provided in the gap between the protrusion 221 and the groove 212.

[0026] In this embodiment, the protrusion 221 of the support block 22 and the groove 212 of the support fixture form a clearance fit. Combined with the clamping washer 23, this absorbs the minor vibrations generated when the roll body 1 rotates. The clamping washer 23 is made of an elastic material, such as polyurethane. A threaded hole is provided on the side of the groove 212 for mounting screws. Simultaneously, rotating the screw pushes the clamping washer 23 towards the protrusion 221 for clamping and fixing, preventing the support block 22 from shifting due to friction when the roll body 1 rotates. The clamping washer 23 is used to distribute the force of the screw directly pressing on the support block 22, making the force on the support block 22 more even and providing greater static friction. After the support block 22 reaches the end of its service life, the screws can be loosened to directly replace the support block 22, effectively reducing costs. By replacing the support blocks 22 with different protrusion heights 221, the center of the metal shaft of the roll body 1 can be adjusted up and down, ensuring that the center of the end face of the roll body 1 is always on the same horizontal line as the center of the two centers. Therefore, it can be used for roll bodies 1 with various diameter specifications. Only the support blocks 22 need to be replaced. It is highly flexible and widely applicable.

[0027] The mounting cover 4 has a threaded hole, through which the clamping screw 41 is installed, and the clamping screw 41 abuts against the upper side of the roll body 1.

[0028] In this embodiment, the threaded hole of the mounting cover 4 is connected to the clamping screw 41. A pressure block is provided below the clamping screw 41 and abuts against the roll body 1. By rotating the clamping screw 41, the pressure block moves downward and applies vertical downward pressure to the upper side of the roll body 1, forming an upper and lower clamping structure with the contact part 2, further restricting the radial runout of the roll body 1.

[0029] A ceramic cylinder 11 is fitted in the middle of the roll body 1.

[0030] In this embodiment, the ceramic cylinder 11 is rotated by rotating the roller body 1 to process the ceramic cylinder 11. The outer diameter of the ceramic cylinder 11 needs to be ground. During the processing, a radial cutting force is generated. The two contact parts 2 and the clamping screw 41 limit the movement to ensure that the roller body 1 does not deform during the rotation processing, thereby ensuring the processing accuracy of the ceramic cylinder 11.

[0031] The two end faces of the roll body 1 are provided with top holes 12, which are used to abut against the top of the external equipment to drive the roll body 1 to rotate.

[0032] In this embodiment, the center holes 12 on both sides of the roll body 1 engage with external equipment, such as a motor-driven center. The center transmits torque to drive the roll body 1 to rotate. The support assembly provides radial support to ensure the stability of the ceramic cylinder 11 during high-speed rotation. The material of support block 22 is Babbitt alloy.

[0033] In this embodiment, the support block 22 is made of Babbitt alloy, which avoids scratching the ends of the rolls and reduces wear at the contact points. Babbitt alloy has a low coefficient of friction, enabling it to form a good lubricating film between relatively moving parts, reducing wear. Specifically, Babbitt alloy generates a lubricating film through a two-phase structure: a combination of a soft matrix (such as tin or lead) and hard particles (such as antimony or copper), forming a stable oil film lubrication during operation. During friction, the soft matrix gradually becomes concave, while the hard particles bulge outward, forming tiny gaps between their surfaces. These gaps become storage spaces for lubricating oil, ensuring continuous oil supply. The bulging hard particles are in direct contact and bear the main load. As the operating time increases, the soft matrix continues to wear, and the hard particles gradually become exposed, forming a dynamically balanced lubrication state. At the same time, the use of Babbitt alloy can quickly conduct away the heat generated during operation, reducing the operating temperature and extending the service life.

[0034] Secondly, Babbitt alloy has good plasticity and toughness, which can better adapt to the deformation of the journal, avoid damage due to local stress concentration, and is easy to process and repair, thus reducing maintenance costs.

[0035] Reference Figure 4 It also includes an embodiment of an installation method for a ceramic roll clamping device, the installation method being applicable to the clamping device of any of the above technical solutions, comprising: S1. Adjust the relative position of the two bases so that the two bases are at the same horizontal position; S2. Install the support fixture, support block and clamping pad on the base to form a contact part; S3. Place one end of the roll body on the two contact parts, connect the base to the mounting cover to form a support assembly, and support both ends of the roll body through the two support assemblies to complete the installation of the clamping device.

[0036] In this embodiment, the base 3 is connected to an external device, such as a machine tool worktable track. The base 3 has a positioning straight edge. By adjusting the relative position of the two bases 3, the straight edge is placed close to the track to ensure that the two bases 3 are horizontal and in a straight line, avoiding the offset of the axis of the roll body 1 due to the tilt of the base 3. The support fixture 21, the support block 22, and the clamping pad 23 are installed on the base in sequence. The support fixture 21 is connected to the base 3 through the waist-shaped hole 211 on the support fixture 21, which facilitates the adjustment of the position during installation. Then, the clamping pad 23 and the support block 22 are placed in the groove 212. Screws or set screws are screwed into one side of the groove 212 to push the clamping pad 23 to press the support block 22 to form a contact part. The clamping screw 41 is placed in the mounting cover 4, and the two ends of the roll body are placed on the support block 22. The mounting cover 4 is closed and tightened with screws. The clamping screw 41 is rotated to press the two ends of the roll body 1.

[0037] Working principle: The two ends of the roll body 1 are placed on the support blocks 22. The adjustment device ensures that the center of the roll body 1 is horizontal with the center of the tip. The tip clamped by the machine tool spindle is aligned with the tip hole 12 at one end of the roll body 1. The front tip is tightened, and then the rear tip is pushed to tighten the other end of the roll body 1. This achieves axial positioning while also providing good longitudinal support, reducing the force on the tip holes 12 at both ends of the roll body 1. The rotation of the machine tool spindle drives the roll body 1 to rotate, completing the rotational motion on the support blocks 22. The support blocks are made of Babbitt alloy, which effectively distributes the wear of the two tip holes 12 caused by long-term rotational friction of the roll body 1, further improving the dimensional accuracy of the workpiece and the stability of the processing.

[0038] In this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ceramic roll clamping device, characterized in that, include: Roll body (1); Support assemblies are provided on both sides of the roll body (1); A cavity is formed in the middle of any of the support components, and at least two contact parts (2) are provided inside the cavity. The contact parts (2) abut against one end of the roll body (1). When the roll body (1) rotates, the two ends of the roll body (1) are supported by the two support components.

2. The clamping device according to claim 1, characterized in that: The support assembly includes a base (3) and a mounting cover (4). The base (3) is hinged to one end of the mounting cover (4), and the other end of the mounting cover (4) is connected to the base (3) by screws.

3. The clamping device according to claim 2, characterized in that: The base (3) is provided with a V-shaped groove, and the mounting cover (4) is bent along the side away from the base (3). The base (3) and the mounting cover (4) cooperate to form the cavity in the middle.

4. The clamping device according to claim 2, characterized in that: The two contact parts (2) are respectively disposed on the two sides of the V-shaped groove of the base (3), so that the two contact parts (2) are arranged opposite to each other. The contact part (2) includes a support fixture (21), and the bottom of the support fixture (21) is provided with a waist-shaped hole (211), which is connected to the base (3) by screws.

5. The clamping device according to claim 4, characterized in that: The support fixture (21) has a groove (212), a support block (22) and a pressing pad (23) are provided in the groove (212), and a protrusion (221) is provided on one side of the support block (22).

6. The clamping device according to claim 5, characterized in that: The protrusion (221) and the groove (212) are fitted with a clearance, and the pressing pad (23) is disposed in the gap between the protrusion (221) and the groove (212).

7. The clamping device according to claim 2, characterized in that: The mounting cover (4) has a threaded hole, through which a clamping screw (41) is installed. The clamping screw (41) abuts against the upper side of the roll body (1).

8. The clamping device according to claim 1, characterized in that: A ceramic cylinder (11) is fitted in the middle of the roll body (1).

9. The clamping device according to claim 1, characterized in that: The two end faces of the roll body (1) are provided with top holes (12), which are used to abut against the top of the external equipment to drive the roll body (1) to rotate.

10. The clamping device according to claim 5, characterized in that: The material of the support block (22) is Babbitt alloy.

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