A pipe welding roller hole type grinding clamp
By using a motor-driven horizontal and vertical assembly in conjunction with a lead screw adjustment mechanism, the problems of low adjustment accuracy and low efficiency in welded pipe roll grinding fixtures are solved, achieving efficient and stable adjustment of the rolls and enhancing positioning accuracy and structural stability.
Patent Information
- Application Number
- CN202522479312.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-23
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-23
AI Technical Summary
Existing welded pipe roll grinding fixtures suffer from low adjustment accuracy and low efficiency during the adjustment process. In particular, they cannot achieve efficient adjustment in both horizontal and vertical directions simultaneously, and there are issues with positioning platform offset and vibration.
The system employs a motor-driven horizontal and vertical assembly in conjunction with a lead screw adjustment mechanism. The lead screw is driven by a drive gear and a driven gear to adjust the horizontal position of the rolls, while the vertical height is adjusted by the cooperation of a threaded rod and a top block. At the same time, a triangular support structure composed of a flip plate and a support pile is used to enhance stability.
It achieves efficient and stable adjustment of the rolls, improves adjustment accuracy and efficiency, ensures the positioning accuracy and stability of the rolls, and solves the problems of limited adjustment effect and low accuracy caused by vibration in the existing technology.
Smart Images
Figure CN224927701U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grinding fixture technology, and in particular to a grinding fixture for welded pipe roll hole type. Background Technology
[0002] In the production of welded pipes, the rollers are key forming components. Their die surfaces will wear down and scratch due to long-term friction with steel. Therefore, they need to be regularly ground and repaired after being positioned by a grinding fixture to ensure the forming accuracy of welded pipes. At present, there are various specifications of welded pipe rollers, and different specifications of rollers need to be matched with corresponding grinding fixtures for positioning.
[0003] Existing roll grinding fixtures use a fixed base design, which can achieve horizontal positioning of the roll through bolt fine-tuning in one direction. However, vertical height adjustment relies on metal shims, requiring repeated removal and testing of the shims and height during adjustment, making the operation cumbersome. Furthermore, traditional fixtures lack a stable guiding mechanism, leading to positioning platform misalignment during horizontal adjustment and insufficient roll positioning accuracy. To improve these issues, existing technologies attempt to add a single-axis lead screw mechanism to the base to replace bolt fine-tuning and achieve linear horizontal adjustment, thus improving horizontal adjustment efficiency. However, in actual use, the single-axis lead screw mechanism can only achieve adjustment in one horizontal direction, with limited adjustment effect. It cannot adjust the vertical height, still requiring shims, resulting in low adjustment efficiency. Additionally, the single lead screw vibrates, leading to low adjustment accuracy. Summary of the Invention
[0004] To overcome the above shortcomings, this utility model provides a welding pipe roll die grinding fixture, which aims to improve the existing technology that can only achieve adjustment in a single horizontal direction, has limited adjustment effect, and has low adjustment accuracy due to vibration.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a welded pipe roll hole-type grinding fixture, comprising a side plate one, characterized in that: an adjustment mechanism is installed on the left side of the side plate one, the function of the adjustment mechanism is to adjust the position of the roll to be ground, and a placement mechanism is installed on the top of the adjustment mechanism, the function of the placement mechanism is to prevent the roll from slipping and rolling; the adjustment mechanism includes a side plate two, the side plate two is disposed on the left side of the side plate one, a motor one is installed on the lower right side of the outer wall of the side plate one, a horizontal component is installed at the output end of the motor one, a positioning platform is provided on the inner side of the side plate one and the side plate two, and vertical components are installed on the left and right sides of the top arm of the positioning platform.
[0006] As a further description of the above technical solution:
[0007] The horizontal assembly includes a drive gear, which is fixedly connected to the output end of a motor. Driven gears are meshed on both the left and right sides of the drive gear. The drive gear and the two driven gears are rotatably connected inside a side plate. A lead screw is fixedly connected to the middle of each of the two driven gears, and nuts are threaded onto the outer walls of the two lead screws.
[0008] As a further description of the above technical solution:
[0009] Both of the vertical components include a mounting base, which is fixedly connected to the top wall of the nut. A lower top block is slidably connected to the rear side of the mounting base. An upper moving block is mounted on the top of the lower top block and is slidably connected to the front side of the mounting base. A threaded rod is threadedly connected to the interior of the lower top block and is rotatably connected to the rear side of the outer wall of the mounting base.
[0010] As a further description of the above technical solution:
[0011] The placement mechanism includes a contact plate, which is fixedly connected to the top wall of two upper movable blocks. An arc-shaped groove is provided in the middle of the top wall of the contact plate. Flip plates are rotatably connected to the front and rear sides of the top wall of the contact plate, and support components are installed at the bottom of the two flip plates.
[0012] As a further description of the above technical solution:
[0013] Both of the support components include multiple toothed plates, which are equidistantly fixedly connected to the front and rear sides of the contact plate. The top walls of the multiple toothed plates are engaged with support piles, and the multiple support piles are rotatably connected to the bottom wall of the flip plate.
[0014] As a further description of the above technical solution:
[0015] Both side plate one and side plate two have bases fixedly connected to their bottoms. A motor bracket is fixedly connected to the lower right outer wall of side plate two. Motor one is fixedly connected to the top of the motor bracket.
[0016] As a further description of the above technical solution:
[0017] The mounting base has a sliding groove on the rear side of its inner bottom wall, and a sliding tenon is fixedly connected to the middle of the bottom wall of the lower top block.
[0018] As a further description of the above technical solution:
[0019] The top of both side plate one and side plate two are equipped with clamping seats, and the rear end of the threaded rod is fixedly connected to a handle.
[0020] This utility model has the following beneficial effects:
[0021] 1. In this utility model, when the motor is powered on, it drives the lead screw to rotate. The nut moves horizontally left and right on the lead screw, which can adjust the horizontal position of the roll. After the horizontal position is adjusted, the threaded rod is rotated, and its rotation drives the lower top block to slide back and forth in the mounting seat. When the lower top block slides forward, it squeezes the upper moving block at the top, causing it to move upward in the mounting seat. When it rotates backward, the upper moving block loses support and descends by its own weight, thereby changing the height of the roll.
[0022] 2. In this utility model, the contact plate is a platform for supporting the roll, and the arc groove is an arc groove, which can initially prevent the cylindrical roll from falling off due to rolling when it moves. The flipping piece can flip on the contact plate and rotate at different angles according to the roll diameter to support the roll, further increasing the stability of the roll on the contact plate. When the flipping piece rotates to a suitable angle, the rotating support pile is rotated to engage with the tooth groove of the corresponding toothed piece, forming a triangular support for the flipping piece and enhancing the structural stability. Attached Figure Description
[0023] Figure 1 This is a front view of a welding pipe roll pass grinding fixture proposed in this utility model;
[0024] Figure 2 This is a perspective view of a welding pipe roll profile grinding fixture proposed in this utility model;
[0025] Figure 3 This is a split view of the adjustment mechanism of a welded pipe roll pass grinding fixture proposed in this utility model;
[0026] Figure 4 This is a split view of the vertical components of a welded pipe roll pass grinding fixture proposed in this utility model.
[0027] Figure 5 This is an exploded view of the placement mechanism of a welding pipe roll hole grinding fixture proposed in this utility model.
[0028] Legend:
[0029] 1. Side plate one; 2. Adjustment mechanism; 201. Side plate two; 202. Motor one; 203. Horizontal assembly; 2031. Driving gear; 2032. Driven gear; 2033. Lead screw; 2034. Nut; 204. Positioning platform; 205. Vertical assembly; 2051. Mounting base; 2052. Lower top block; 2053. Upper moving block; 2054. Threaded rod; 3. Placement mechanism; 301. Contact plate; 302. Arc groove; 303. Flip plate; 304. Support assembly; 3041. Gear plate; 3042. Support pile; 4. Base; 5. Slide groove; 6. Clamping seat; 7. Motor bracket; 8. Sliding tenon; 9. Handle. Detailed Implementation
[0030] 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.
[0031] Reference Figure 1 , Figure 3 and Figure 4 An embodiment of this utility model is provided: a welded pipe roll hole-type grinding fixture, including a side plate 1, an adjustment mechanism 2 is installed on the left side of the side plate 1, the function of the adjustment mechanism 2 is to adjust the position of the roll to be ground, and a placement mechanism 3 is installed on the top of the adjustment mechanism 2, the function of the placement mechanism 3 is to prevent the roll from slipping and rolling.
[0032] The adjustment mechanism 2 includes a second side plate 201, which is located on the left side of the first side plate 1. A first motor 202 is installed on the lower right side of the outer wall of the first side plate 1. The first motor is an AC servo motor of the 1FK7 series. It generates a rotating magnetic field by connecting the current. The magnetic field interacts with the permanent magnet in the rotor and drives the rotor to rotate. A horizontal component 203 is installed at the output end of the first motor 202. A positioning platform 204 is provided on the inner side of the first side plate 1 and the second side plate 201. Vertical components 205 are installed on the left and right sides of the top arm of the positioning platform 204.
[0033] The horizontal assembly 203 includes a drive gear 2031, which is fixedly connected to the output end of the motor 202. Driven gears 2032 are meshed on both the left and right sides of the drive gear 2031. The drive gear 2031 and the two driven gears 2032 are rotatably connected inside the side plate 1. A lead screw 2033 is fixedly connected to the middle of the two driven gears 2032. Nuts 2034 are threaded onto the outer walls of the two lead screws 2033.
[0034] Each vertical component 205 includes a mounting base 2051, which is fixedly connected to the top wall of the nut 2034. A lower top block 2052 is slidably connected to the rear side of the mounting base 2051. An upper moving block 2053 is mounted on the top of the lower top block 2052. The upper moving block 2053 is slidably connected to the front side of the mounting base 2051. A threaded rod 2054 is threadedly connected to the inside of the lower top block 2052. The threaded rod 2054 is rotatably connected to the rear side of the outer wall of the mounting base 2051.
[0035] The bottom of both side plate 1 and side plate 201 are fixedly connected to the base 4. The lower right outer wall of side plate 201 is fixedly connected to the motor bracket 7. The motor 1 202 is fixedly connected to the top of the motor bracket 7. The inner bottom wall of the mounting base 2051 is provided with a sliding groove 5. The bottom wall of the lower top block 2052 is fixedly connected to a sliding tenon 8.
[0036] Specifically, motor 202 is powered by a wire, driving the drive gear 2031 to rotate. The teeth of the drive gear 2031 mesh with the teeth of the driven gears 2032 on both sides. Simultaneously, the central shaft of the drive gear 2031 is fixedly connected to one end of the lead screw 2033 in the middle, causing the driven gears 2032 on both sides and the lead screw 2033 in the middle to rotate in the same direction. The two ends of the lead screw 2033 are respectively mounted on the opposite side walls of side plate 1 and side plate 201 via bearings, and are installed between side plate 1 and side plate 201, rotating around its own axis in the lower inner part of both. Nut 2034 is sleeved on the outside of the lead screw 2033, with its inner thread meshing with the thread on the surface of the lead screw 2033. The top of the nut 2034 is fixedly connected to the bearing seat of the roll via a connecting bracket. As the lead screw 2033 moves, the nut 2034 begins to rotate. The screw 2033 is moved horizontally left and right, which in turn drives the roller to move synchronously through the connecting frame to adjust the horizontal position of the roller. After the horizontal position is adjusted, the screw rod 2054 is rotated, which drives the lower top block 2052 to slide back and forth in the slide inside the mounting base 2051. When the lower top block 2052 slides forward, its top inclined surface contacts and presses the upper moving block 2053 with the bottom inclined surface, causing the upper moving block 2053 to move upward in the guide groove inside the mounting base 2051. When the screw rod 2054 is rotated backward, the lower top block 2052 slides backward, and the upper moving block 2053 loses the support of the lower top block 2052. Under the action of its own gravity, the upper moving block 2053 will descend along the guide groove. The top of the upper moving block 2053 contacts the bottom of the roller bearing seat, and the height of the roller is changed by the lifting and lowering of the upper moving block 2053.
[0037] Reference Figure 2 and Figure 5 The placement mechanism 3 includes a contact plate 301, which is fixedly connected to the top wall of two upper moving blocks 2053. An arc groove 302 is provided in the middle of the top wall of the contact plate 301. Flip plates 303 are rotatably connected to the front and rear sides of the top wall of the contact plate 301. Support components 304 are installed at the bottom of the two flip plates 303.
[0038] Both support components 304 include multiple toothed pieces 3041, which are fixedly connected at equal intervals to the front and rear sides of the contact plate 301. The top walls of the multiple toothed pieces 3041 are meshed with support piles 3042, and the multiple support piles 3042 are rotatably connected to the bottom wall of the flip plate 303.
[0039] Specifically, the contact plate 301 serves as a platform supporting the roll, with the bottom of the roll resting directly on its upper surface. The arc-shaped groove 302 is an arc-shaped recess formed on the upper surface of the contact plate 301, which initially restricts the lateral movement of the roll, preventing the cylindrical roll from falling off during movement. One end of the flipping plate 303 is connected to the edge of the contact plate 301 via a hinge, allowing it to flip around the hinge on the contact plate 301. Depending on the diameter of the roll, the flipping plate 303 can be rotated at different angles, causing its inner surface to fit against the outer wall of the roll, thus achieving [the desired action]. The surface roller is supported to further increase its stability on the contact plate 301 and prevent the roller from shaking. The toothed plate 3041 is fixed on the surface of the contact plate 301. One end of the support pile 3042 is hinged to the outer wall of the flip plate 303. When the flip plate 303 rotates to a suitable angle, the operator rotates the support pile 3042 so that the end away from the flip plate 303 engages with the tooth groove of the corresponding toothed plate 3041. The support pile 3042, the flip plate 303 and the contact plate 301 form a triangular support for the flip plate 303, which enhances the overall structural stability.
[0040] Reference Figure 1 and Figure 4 The top of both side plate 1 and side plate 201 is equipped with a clamping seat 6, and the rear end of the threaded rod 2054 is fixedly connected with a handle 9.
[0041] Specifically, the clamping seat 6 is used to fix the roll and perform grinding operations, and the handle 9 facilitates the rotation of the threaded rod 2054. At the same time, a special tool can be used to clamp the handle 9 to increase the adjustment speed.
[0042] Working principle: When motor 1 202 is powered on, it drives the drive gear 2031 to rotate. The drive gear 2031 drives the driven gears 2032 on both sides and the lead screw 2033 in the middle to rotate in the same direction. The lead screw 2033 is installed between side plate 1 and side plate 201, rotating in the lower inner part of the two plates. The nut 2034 begins to move horizontally left and right on the lead screw 2033 as the lead screw 2033 moves, thereby adjusting the horizontal position of the roll. After the horizontal position is adjusted, the threaded rod 2054 is rotated, and its rotation drives the lower top block 2052 to move on the mounting base 2. The upper moving block 2053 slides back and forth within the mounting base 2051. When the lower top block 2052 slides forward, its top will press the upper moving block 2053 upward within the mounting base 2051. When it rotates backward, it loses the support of the lower top block 2052, and the upper moving block 2053 will descend under its own gravity, thereby achieving the purpose of changing the height of the roll. This mechanism adds an additional lead screw 2033, which can improve its stability during operation and also take into account the adjustment of the vertical position. It solves the problems of the existing technology, which can only achieve single horizontal adjustment, has limited adjustment effect, and has low adjustment accuracy due to vibration.
[0043] The contact plate 301 is a platform that supports the rolls. The arc groove 302 is an arc groove that can initially prevent the cylindrical rolls from falling off during movement due to rolling. The flipping piece 303 can flip on the contact plate 301 and rotate at different angles according to the diameter of the roll, thereby supporting the surface rolls and further increasing their stability on the contact plate 301. When the flipping piece 303 rotates to a suitable angle, the support pile 3042 is rotated so that it engages with the tooth groove of the corresponding toothed piece 3041, forming a triangular support for the flipping piece 303 and enhancing the structural stability.
[0044] 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 jig for grinding the roll pass of a welded pipe, comprising a side plate (1), characterized in that: An adjustment mechanism (2) is installed on the left side of the side plate (1). The function of the adjustment mechanism (2) is to adjust the position of the roller to be repaired. A placement mechanism (3) is installed on the top of the adjustment mechanism (2). The function of the placement mechanism (3) is to prevent the roller from slipping and rolling. The adjustment mechanism (2) includes a second side plate (201), which is located on the left side of the first side plate (1). A first motor (202) is installed on the lower right side of the outer wall of the first side plate (1). A horizontal component (203) is installed at the output end of the first motor (202). A positioning platform (204) is provided on the inner side of the first side plate (1) and the second side plate (201). A vertical component (205) is installed on the left and right sides of the top arm of the positioning platform (204).
2. The welded pipe roll profile grinding fixture according to claim 1, characterized in that: The horizontal assembly (203) includes a drive gear (2031), which is fixedly connected to the output end of the motor (202). Driven gears (2032) are meshed on both the left and right sides of the drive gear (2031). The drive gear (2031) and the two driven gears (2032) are rotatably connected inside the side plate (1). A lead screw (2033) is fixedly connected to the middle of the two driven gears (2032). Nuts (2034) are threaded onto the outer walls of the two lead screws (2033).
3. The welded pipe roll profile grinding fixture according to claim 1, characterized in that: Both vertical components (205) include a mounting base (2051) fixedly connected to the top wall of the nut (2034). A lower top block (2052) is slidably connected to the rear side of the mounting base (2051). An upper moving block (2053) is mounted on the top of the lower top block (2052). The upper moving block (2053) is slidably connected to the front side of the mounting base (2051). A threaded rod (2054) is threadedly connected to the interior of the lower top block (2052). The threaded rod (2054) is rotatably connected to the rear side of the outer wall of the mounting base (2051).
4. The welded pipe roll profile grinding fixture according to claim 1, characterized in that: The placement mechanism (3) includes a contact plate (301), which is fixedly connected to the top wall of two upper moving blocks (2053). An arc-shaped groove (302) is provided in the middle of the top wall of the contact plate (301). A flip piece (303) is rotatably connected to the front and rear sides of the top wall of the contact plate (301). A support component (304) is installed at the bottom of the two flip pieces (303).
5. A jig for grinding the roll pass of a welded pipe according to claim 4, characterized in that: Both of the support components (304) include a plurality of toothed pieces (3041), which are fixedly connected at equal intervals to the front and rear sides of the contact plate (301). The top walls of the plurality of toothed pieces (3041) are engaged with support piles (3042), which are rotatably connected to the bottom wall of the flip plate (303).
6. The welded pipe roll profile grinding fixture according to claim 1, characterized in that: The bottom of both side plate 1 (1) and side plate 2 (201) are fixedly connected to a base (4). The lower right outer wall of side plate 2 (201) is fixedly connected to a motor bracket (7). The motor 1 (202) is fixedly connected to the top of the motor bracket (7).
7. A jig for grinding the roll pass of a welded pipe according to claim 3, characterized in that: The mounting base (2051) has a sliding groove (5) on the rear side of its inner bottom wall, and the bottom wall of the lower top block (2052) is fixedly connected with a sliding tenon (8).
8. A jig for grinding the roll pass of a welded pipe according to claim 3, characterized in that: The top of both side plate one (1) and side plate two (201) are equipped with clamping seats (6), and the rear end of the threaded rod (2054) is fixedly connected with a handle (9).