A polishing device for a workpiece

Abstract

The utility model discloses a kind of grinding devices of workpiece, it is characterized by, including rack and polishing assembly, the polishing assembly is movably installed in rack;The polishing assembly includes support frame, three rotating rollers are rotatably installed on the support frame, polishing belt is wound around the rotating roller outer periphery, and one rotating roller is driven by motor;The other side of the support frame relative to polishing belt is integrally connected with limit ring by connecting portion, and multiple support columns are adjustably installed on the limit ring;Workpiece is rotatably installed on the rack, the limit ring can be sleeved on the outer periphery of workpiece, and the outer periphery of workpiece is supported by support column and abuts, the support frame can slide along the axis direction of workpiece, and polishing belt can move along with support frame and polish the outer periphery of workpiece.The utility model can be axially limited support to the outer periphery of steel pipe, prevent steel pipe from axial bending deformation, improve steel pipe polishing quality.

Description

Technical Field

[0001] This utility model relates to the technical field of grinding equipment, and in particular to a grinding device for workpieces. Background Technology

[0002] In the steel pipe manufacturing industry, surface treatment of steel pipes such as oil pipes, oil casing pipes, and line pipes is a crucial step, especially the surface polishing treatment, which not only affects the appearance quality of the steel pipe, but also directly relates to its corrosion resistance, wear resistance, and service life.

[0003] During the production of steel pipes, due to the steel manufacturing process, the surface finish of the pipes is often poor, requiring grinding. Furthermore, after prolonged use, the surface also needs polishing. In existing technologies, when polishing long pipes using grinding belts, the high-speed rotation of the polishing shaft causes it to easily bend under centrifugal force, affecting polishing quality. Moreover, when the grinding belt is applied close to the outer circumference of the pipe, it exerts lateral pressure, which can also cause axial bending in long pipes due to high-speed rotation, further impacting polishing quality. Even with support devices, most are independently designed, and the concentric arrangement of multiple parts makes alignment during processing difficult, resulting in complex assembly and inconvenient operation.

[0004] Therefore, this utility model provides a new technical solution to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a workpiece grinding device that can provide axial limiting support on the outer circumference of the steel pipe, prevent the steel pipe from undergoing axial bending deformation, and improve the polishing quality of the steel pipe.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A workpiece grinding device includes a frame and a grinding assembly, wherein the grinding assembly is movably mounted on the frame;

[0008] The polishing assembly includes a support frame, on which three rotating rollers are rotatably mounted. A polishing belt is wrapped around the outer periphery of each rotating roller, and one of the rotating rollers is driven by a motor.

[0009] The support frame is integrally connected to a limiting ring on the opposite side of the grinding belt via a connecting part, and multiple support columns are adjustablely installed on the limiting ring.

[0010] The frame is rotatably mounted with a workpiece. The limiting ring can be sleeved on the outer periphery of the workpiece and supported by the support column. The support frame can slide along the axis of the workpiece. The grinding belt can move with the support frame and grind the outer periphery of the workpiece.

[0011] The present invention is further configured such that two guide rails are arranged side by side on the frame along the workpiece mounting axis, a moving device is installed on the guide rails, and the grinding assembly is fixedly connected to the moving device through a support frame, so that the grinding assembly can be moved along the workpiece axis by driving the moving device.

[0012] The present invention is further configured such that the limiting ring includes a first segment and a second segment, the first segment is integrally connected to the connecting part, the second segment is hinged to the first segment and can be installed on the outer periphery of the workpiece, and the limiting ring can be coaxially set with the workpiece after installation.

[0013] The present invention is further configured such that the support columns are distributed at intervals around the limiting ring in a ring shape, and the support columns can be adjusted radially along the limiting ring so that the support columns can abut against the outer periphery of the workpiece to form a limiting support.

[0014] The present invention is further configured such that a sleeve is integrally connected to one end of the support column facing the workpiece, and a ball bearing is movably installed inside the sleeve. The ball bearing can roll and abut against the outer periphery of the workpiece to form a limiting support.

[0015] The present invention is further configured such that the support column has a through groove along the radial direction of the limiting ring and is connected to the limiting ring by a fixing bolt passing through the through groove; a connecting block is integrally connected to the end of the support column away from the ball bearing, and the connecting block is rotatably mounted with an adjusting bolt and can be movably connected to the limiting ring by the adjusting bolt.

[0016] The present invention is further configured such that a limiting block is fixedly installed at the other end of the limiting ring relative to the support column, the connecting block and the limiting block are connected by an adjusting bolt, and the support column can be adjusted by rotating the adjusting bolt to extend and retract along the direction of the through groove, so that the ball can roll and abut against the outer periphery of the workpiece.

[0017] The beneficial effects of this utility model are as follows: This utility model integrates a limiting ring on the support frame of the grinding device. The limiting ring includes a first segment and a second segment, which are connected by a hinge. This allows the second segment to be rotated and fastened onto the first segment, which is then fitted onto the outer circumference of the workpiece. Multiple telescopic and adjustable support columns are then installed at intervals on the limiting ring. A ball bearing is movably installed at the end of the support seat facing the workpiece. By adjusting the distance between the support column and the workpiece, the ball bearing can roll against the outer circumference of the workpiece, thus providing support and limiting for the workpiece. Furthermore, both the limiting ring and the grinding belt are installed on the support frame, and their synchronous movement allows the limiting ring to continuously support and limit the workpiece, preventing the high-speed rotating steel pipe from being squeezed by the grinding belt and undergoing axial bending deformation, which would affect the polishing quality of the steel pipe. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a workpiece grinding device in this embodiment.

[0019] Figure 2 for Figure 1 Enlarged view at point A.

[0020] Figure 3 This is a schematic diagram of the structure of the grinding component in a workpiece grinding device according to this embodiment.

[0021] Figure 4 This is a schematic diagram of the structure of a workpiece grinding device after the limiting ring is engaged in this embodiment.

[0022] Figure 5 This is a schematic diagram of the structure of a workpiece grinding device after the limiting ring is opened in this embodiment.

[0023] Figure 6 This is a schematic diagram of the support column in a workpiece grinding device according to this embodiment.

[0024] Figure 7 This is a cross-sectional view of the support column in a workpiece grinding device according to this embodiment.

[0025] Reference numerals: Frame 1; Guide rail 11; Moving device 12; Grinding assembly 2; Support frame 21; Grinding belt 22; Rotating roller 23; Motor 231; Connecting part 24; Limiting ring 25; First section 251; Second section 252; Support column 26; Sleeve 261; Ball bearing 262; Through groove 263; Connecting block 264; Adjusting bolt 265; Fixing bolt 266; Limiting block 267; Workpiece 3. Detailed Implementation

[0026] 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.

[0027] This embodiment discloses a workpiece grinding device, referring to... Figures 1-7 As shown, it mainly includes a frame 1 and a grinding assembly 2, with the grinding assembly 2 movably mounted on the frame 1. The workpiece 3 to be ground can be rotatably mounted on the frame 1 via a connector, and two guide rails 11 are arranged side by side on the frame 1 along the mounting axis of the workpiece 3. A moving device is mounted on the guide rails 11, and the grinding assembly 2 is fixedly connected to the moving device 12 via a support frame 21. The moving device 12 can be driven by a driver to move the grinding assembly 2 along the axis of the workpiece 3. The workpiece 3 is a long circular tube, and the outer circumference of circular tubes of different diameters can be ground by changing the connector.

[0028] Reference Figure 3 and Figure 4 As shown, the grinding assembly 2 mainly includes a support frame 21, on which three rotating rollers 23 are rotatably mounted. The axes of the three rotating rollers 23 are parallel to each other, and one of the rotating rollers 23 is driven to rotate by a motor. A grinding belt 22 is wrapped around the outer periphery of the three rotating rollers 23. The grinding belt 22 is driven to rotate by the rotating rollers 23 to grind the outer periphery of the workpiece 3. The grinding belt 22 can move with the moving device 12 to grind the workpiece 3 along the length direction. The grinding efficiency is high and the operation is simple.

[0029] The mobile device, for example, may be a sliding platform that is adapted to the guide rail 11 by rollers and reciprocated by a belt or telescopic drive.

[0030] On the other side of the support frame 21 opposite to the grinding belt 22, a limiting ring 25 is integrally connected via a connecting part 24. The limiting ring 25 has a circular structure, and its diameter is larger than that of the workpiece 3 to be processed, allowing the limiting ring 25 to be fitted onto the outer circumference of the workpiece 3. A telescopically adjustable support column 26 is installed on the limiting ring 25 to achieve limiting support for the workpiece 3 to be processed; specifically, refer to... Figure 5 and Figure 6As shown, the limiting ring 25 mainly includes a first segment 251 and a second segment 252. The first segment 251 is integrally connected to the connecting part 24, while the second segment 252 is hinged to the first segment 251, allowing the second segment 252 to be rotated and adjusted along the hinged position and installed on the first segment 251. After closing, the limiting ring 25 can be coaxially set with the workpiece 3, which facilitates the limiting ring 25 to limit and support the workpiece 3. Multiple support columns 26 are adjustablely installed on the side end of the limiting ring 25. The support columns 26 are spaced apart from each other and are oriented towards the center of the limiting ring 25, so that the force of the multiple support columns 26 can be converged at a single point, which can improve the support stability of the workpiece 3.

[0031] Specifically, the first segment 251 has a minor arc shape, and the second segment 252 has a major arc shape. One end of the second segment 252 is rotatably connected to one end of the first segment 251 via a pivot, allowing them to open and close. The second end of the second segment 252 is fixedly connected by bolts or pins, and after the second segment 252 and the first end 251 are closed, they abut against each other at the connection point for positioning. Then, they are further fixed using bolts or pins, forming a fixed ring.

[0032] Reference Figure 6 and Figure 7 As shown, a sleeve 261 is integrally connected to one end of the support column 26 facing the workpiece 3. The end of the sleeve 261 is open, and a ball bearing 262 is embedded inside it. Part of the ball bearing 262 can protrude from the open end of the sleeve 261. The ball bearing 262 can press against the surface of the workpiece through the exposed spherical surface of the ball bearing 262, thereby enabling the two to achieve relative axial movement and circumferential rotation. Furthermore, the ball bearing 262 and the inner cavity of the sleeve 261 are spherically adapted to each other, so that the ball bearing can rotate smoothly in the inner cavity. And the opening of the sleeve 261 is slightly smaller than the ball bearing, which can keep the ball bearing inside the sleeve 261.

[0033] A through groove 263 is provided on the support column 26 along the radial direction of the limiting ring 25, allowing the support column 26 to be fixedly installed on the limiting ring 25 by means of a fixing bolt 266 passing through the through groove 263. A connecting block 264 is integrally connected to the end of the support column 26 away from the ball bearing 262, and a limiting block 267 is fixedly installed on the other end of the limiting ring 25 relative to the support column 26. The connecting block 264 and the limiting block 267 are connected by an adjusting bolt 265. The adjusting bolt 265 is rotatably mounted on the connecting block 264 and can rotate relative to the connecting block 264 without moving in the axial direction. The other end of the adjusting bolt 265 is threaded to the limiting block 267. Therefore, by rotating the adjusting bolt 265, the support column 26 can move along the direction of the through groove 263. The telescopic adjustment allows the ball bearings 262 at the end of the support column 26 to roll against the outer periphery of the workpiece 3, forming a limiting support for the workpiece 3. During the grinding process, the workpiece 3 itself rotates axially, while the grinding device 2 moves along the axis of the workpiece 3 for grinding. Therefore, the ball bearings 262 roll against the workpiece 3. Secondly, the limiting ring 25 and the grinding belt 22 are installed together on the support frame 21, and the support frame 21 is fixedly connected to the moving device 12. Therefore, the limiting ring 25 and the grinding belt 22 move synchronously. During the grinding process of the grinding belt 22, the limiting ring 25 can continuously and maintain the same position to support and limit the workpiece 3, which can prevent the high-speed rotating steel pipe from being squeezed by the grinding belt and causing axial bending deformation, thus affecting the polishing quality of the steel pipe.

[0034] In use, the grinding device of this utility model first rotates the second section 252 of the limiting ring 25 around the hinge to open it, and installs the workpiece 3 to be processed onto the frame 1. Then, the second section 252 is rotated and fastened to the outer circumference of the workpiece 3. The support column 26 is adjusted according to the outer diameter of the workpiece 3. Specifically, the adjusting bolt 265 is manually rotated to make the ball bearing 262 at the end of the support column 26 just abut against the outer circumference of the workpiece 3. At this time, the support column 26 is fixed, and then the workpiece 3 begins to rotate axially. The grinding belt 22 on the grinding device 2 starts to operate and moves and grinds along the length direction of the workpiece 3 with the moving device 12. After grinding, the second section 252 on the limiting ring 25 is opened and the workpiece 3 is taken out. The operation is simple and can fully improve the stability of the workpiece 3 rotation grinding and improve the polishing quality of the workpiece 3.

[0035] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A workpiece grinding device, characterized in that, It includes a frame (1) and a polishing assembly (2), the polishing assembly (2) being movably mounted on the frame (1); The grinding assembly (2) includes a support frame (21), on which three rotating rollers (23) are rotatably mounted. A grinding belt (22) is wrapped around the outer periphery of the rotating rollers (23), and one of the rotating rollers (23) is driven by a motor (231). The support frame (21) is integrally connected to the limit ring (25) on the other side of the grinding belt (22) via the connecting part (24), and multiple support columns (26) are adjustablely installed on the limit ring (25). The frame (1) is rotatably mounted with a workpiece (3). The limiting ring (25) can be sleeved on the outer periphery of the workpiece (3) and supported by the support column (26) against the outer periphery of the workpiece (3). The support frame (21) can slide along the axis of the workpiece (3). The grinding belt (22) can follow the support frame (21) to move and grind the outer periphery of the workpiece (3).

2. The workpiece grinding device according to claim 1, characterized in that, The frame (1) has two guide rails (11) arranged side by side along the mounting axis of the workpiece (3). A moving device (12) is installed on the guide rails (11). The grinding component (2) is fixedly connected to the moving device (12) through the support frame (21). The grinding component (2) can be moved along the axis of the workpiece (3) by driving the moving device (12).

3. The workpiece grinding device according to claim 1, characterized in that, The limiting ring (25) includes a first segment (251) and a second segment (252). The first segment (251) is integrally connected to the connecting part (24), and the second segment (252) is hinged to the first segment (251) and can be installed on the outer periphery of the workpiece (3). After installation, the limiting ring (25) can be coaxially set with the workpiece (3).

4. The workpiece grinding device according to claim 3, characterized in that, The support columns (26) are distributed in a ring at intervals around the limiting ring (25). The support columns (26) can be adjusted radially along the limiting ring (25) so that the support columns (26) can abut against the outer periphery of the workpiece (3) to form a limiting support.

5. The workpiece grinding device according to claim 4, characterized in that, The support column (26) is integrally connected to a sleeve (261) at one end facing the workpiece (3). A ball bearing (262) is movably installed inside the sleeve (261). The ball bearing (262) can roll against the outer periphery of the workpiece (3) to form a limiting support.

6. The workpiece grinding device according to claim 5, characterized in that, The support column (26) has a through groove (263) in the radial direction of the limiting ring (25) and is connected to the limiting ring (25) through the through groove (263) by a fixing bolt (266); the end of the support column (26) away from the ball (262) is integrally connected to a connecting block (264), the connecting block (264) is rotatably mounted with an adjusting bolt (265) and can be movably connected to the limiting ring (25) by the adjusting bolt (265).

7. The workpiece grinding device according to claim 6, characterized in that, The limiting ring (25) is fixedly installed with a limiting block (267) at the other end relative to the support column (26). The connecting block (264) and the limiting block (267) are connected by an adjusting bolt (265). The support column (26) can be adjusted by rotating the adjusting bolt (265) along the direction of the through groove (263), so that the ball (262) can roll against the outer periphery of the workpiece (3).

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