Cylindrical workpiece clamping device with centering function

Abstract

The utility model relates to the field of clamping devices, in particular to a cylindrical workpiece clamping device with a centering function, which comprises a workbench. The device further comprises a first fixing column and a transmission assembly. A first fixing column is fixedly connected to the lower end of the workbench, a gear ring is rotatably arranged on the outer wall of the first fixing column, a first rack is arranged at the front end of the gear ring, second racks are symmetrically arranged at the other end of the gear ring, the first rack, the second racks and the gear ring are meshed with one another, a second fixing column is fixedly connected to the lower end of the workbench, and a roller is rotatably arranged on the outer wall of the second fixing column. The outer wall of the roller contacts with the rear end of the first rack. The first rack is driven by the first sliding block to move leftwards so that the gear ring can rotate, the gear ring drives the second rack to move rightwards, synchronous movement of the two clamping blocks is achieved, the first rack can be tightly attached to the gear ring through the idler wheel at the rear end of the first rack, and the problem that transmission assemblies cannot move synchronously, and the transmission assemblies cannot move synchronously is solved. Axis errors in the machining process are caused, and the machining precision is affected.

Description

Technical Field

[0001] This utility model belongs to the field of clamping devices, specifically relating to a cylindrical workpiece clamping device with a centering function. Background Technology

[0002] A cylindrical workpiece clamping device is a tool or apparatus used to fix and clamp cylindrical workpieces. It is mainly used in machining processes to ensure that the workpiece maintains a stable and precise position during machining, assembly, or inspection. During machining, cylindrical workpieces typically need to be securely fixed using clamps to prevent displacement, vibration, or deformation during operation, thereby ensuring machining accuracy.

[0003] In the existing clamping device, the transmission components cannot be guaranteed to move synchronously during the clamping process, resulting in inconsistent synchronicity of the clamping blocks. This may cause the workpiece's axis to be misaligned with the fixture's axis, leading to axiality errors during the machining process and affecting machining accuracy.

[0004] Therefore, a cylindrical workpiece clamping device with a centering function is proposed. The first rack is moved by a cylinder, which causes the gear ring to move synchronously with the second rack, so that the two clamping blocks can move synchronously and clamp the workpiece. Utility Model Content

[0005] To overcome the problem that existing clamping devices cannot ensure synchronous movement of the transmission components during the clamping process, resulting in inconsistent synchronicity of the clamping blocks, which may lead to misalignment between the workpiece's axis and the fixture's axis, causing axiality errors during machining and affecting machining accuracy, a cylindrical workpiece clamping device with centering function is proposed.

[0006] The technical solution of this utility model is as follows: a cylindrical workpiece clamping device with centering function, including a worktable; it also includes a first fixed column and a transmission assembly; the first fixed column is fixedly connected to the lower end of the worktable, a toothed ring is rotatably provided on the outer wall of the first fixed column, a first rack is provided at the front end of the toothed ring, and a second rack is symmetrically provided at the other end of the toothed ring, the first rack, the second rack and the toothed ring mesh with each other, the second fixed column is fixedly connected to the lower end of the worktable, a roller is rotatably provided on the outer wall of the second fixed column, and the outer wall of the roller contacts the rear end of the first rack.

[0007] Preferably, a first groove is provided at the lower end of the worktable, a first slider is slidably provided on the inner wall of the first groove, a first connecting block is fixedly connected to the lower end of the first slider, the rear end of the first connecting block is fixedly connected to the front end of the first rack, and support blocks are fixedly connected at the four corners of the lower end of the worktable.

[0008] Preferably, the transmission assembly includes a first mounting base, a cylinder, a fixing block, and a second connecting block; the first mounting base is fixedly connected to the upper end of the worktable, the cylinder is hinged to the upper end of the first mounting base, the top end of the cylinder's telescopic rod is fixedly connected to the fixing block, the other end of the fixing block is fixedly connected to the second connecting block, and the lower end of the second connecting block is fixedly connected to the upper end of the first slider.

[0009] Preferably, the transmission assembly further includes a second slider, a slide rod, a blocking block, and a second mounting base; the second slider is fixedly connected to the rear end of the second connecting block, a slide rod is provided through the left end of the second slider, the second slider is slidably disposed on the outer wall of the slide rod, the second mounting base is fixedly connected to the outer walls of the left and right ends of the slide rod, and a blocking block is fixedly connected to the outer side of the second slider.

[0010] Preferably, multiple support columns are fixedly connected to the upper end of the worktable. The multiple support columns are evenly distributed on the upper end of the worktable, and a bearing plate is fixedly connected to the upper end of the support column. A positioning hole is opened through the center of the bearing plate.

[0011] Preferably, a second groove is provided through the left and right sides of the upper end of the bearing plate, and the second groove is adapted to the second slider.

[0012] Preferably, a limiting plate is fixedly connected to the inner wall of the second groove, a third groove is opened through the left end of the second slider, the limiting plate is adapted to the third groove, and a clamping block is fixedly connected to the upper end of the second slider.

[0013] The beneficial effects of this utility model are as follows: By starting the cylinder, the first sliding block moves the first rack to the left, thereby driving the gear ring to rotate. The gear ring drives the second rack to move to the right, realizing the synchronous movement of the two clamping blocks. Through the roller at the rear end of the first rack, the first rack and the gear ring can be tightly engaged, solving the problem that the transmission components cannot move synchronously, which may cause the axis of the workpiece to be inconsistent with the axis of the fixture, resulting in axis error during the processing and affecting the processing accuracy. Attached Figure Description

[0014] Figure 1 The diagram shown is a three-dimensional structural schematic of the cylindrical workpiece clamping device with centering function of this utility model.

[0015] Figure 2 The diagram shows a three-dimensional structural schematic of the first rack of the cylindrical workpiece clamping device with centering function of this utility model.

[0016] Figure 3 The diagram shows a three-dimensional structural schematic of the cylinder of the cylindrical workpiece clamping device with centering function of this utility model.

[0017] Figure 4 The diagram shows a three-dimensional structural schematic of the support plate of the cylindrical workpiece clamping device with centering function of this utility model.

[0018] The labels in the attached diagram are as follows: 1. Workbench; 108. Second mounting base; 2. First connecting block; 3. First rack; 4. First fixing post; 5. Gear ring; 6. Second rack; 7. First groove; 8. First slider; 9. Second fixing post; 10. Roller; 11. Support block; 12. Support post; 13. Bearing plate; 14. Positioning hole; 15. Limiting plate; 16. Third groove; 17. Clamping block; 18. Second groove; 101. First mounting base; 102. Cylinder; 103. Fixing block; 104. Second connecting block; 105. Second slider; 106. Slide rod; 107. Blocking block. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please see Figures 1-4 This utility model provides an embodiment of a cylindrical workpiece clamping device with a centering function, including a worktable 1; it also includes a first fixed column 4 and a transmission assembly; the first fixed column 4 is fixedly connected to the lower end of the worktable 1, a toothed ring 5 is rotatably arranged on the outer wall of the first fixed column 4, a first rack 3 is arranged at the front end of the toothed ring 5, and a second rack 6 is symmetrically arranged at the other end of the toothed ring 5, the first rack 3, the second rack 6 and the toothed ring 5 mesh with each other, and a second fixed column 9 is fixedly connected to the lower end of the worktable 1, and a roller is rotatably arranged on the outer wall of the second fixed column 9. 10. The outer wall of the roller 10 contacts the rear end of the first rack 3. The first sliding block 2 causes the first rack 3 to move to the left, thereby driving the gear ring 5 to rotate. The gear ring 5 drives the second rack 6 to move to the right, realizing the synchronous movement of the two clamping blocks 17. Through the roller 10 at the rear end of the first rack 3, the first rack 3 and the gear ring 5 can be tightly fitted, solving the problem that the transmission components cannot move synchronously, which may cause the axis of the workpiece to be inconsistent with the axis of the fixture, resulting in axis error during the processing and affecting the processing accuracy.

[0021] Please see Figure 2 In this embodiment, a first groove 7 is provided at the lower end of the workbench 1, and a first slider 8 is slidably provided on the inner wall of the first groove 7. A first connecting block 2 is fixedly connected to the lower end of the first slider 8, and the rear end of the first connecting block 2 is fixedly connected to the front end of the first rack 3. Support blocks 11 are fixedly connected at the four corners of the lower end of the workbench 1. The first rack 3 is moved by the first slider 8 under the drive of the cylinder 102.

[0022] Please see Figure 1 and Figure 3In this embodiment, the transmission assembly includes a first mounting base 101, a cylinder 102, a fixing block 103, and a second connecting block 104. The first mounting base 101 is fixedly connected to the upper end of the worktable 1, and the cylinder 102 is hinged to the upper end of the first mounting base 101. The top end of the telescopic rod of the cylinder 102 is fixedly connected to the fixing block 103, and the other end of the fixing block 103 is fixedly connected to the second connecting block 104. The lower end of the second connecting block 104 is fixedly connected to the upper end of the first slider 8. The transmission assembly also includes a second slider 105, a sliding rod 106, a blocking block 107, and a second mounting base. 108; The second slider 105 is fixedly connected to the rear end of the second connecting block 104. A sliding rod 106 is provided through the left end of the second slider 105. The second slider 105 is slidably disposed on the outer wall of the sliding rod 106. The outer walls of the left and right ends of the sliding rod 106 are fixedly connected to the second mounting base 108. A blocking block 107 is fixedly connected to the outside of the second slider 105. By providing a fixing block 103 at the top of the telescopic rod of the cylinder 102, and fixing the fixing block 103 to the second connecting block 104, the first slider 8 and the second slider 105 can move together under the action of the cylinder 102.

[0023] Please see Figure 1 and Figure 4 In this embodiment, multiple support columns 12 are fixedly connected to the upper end of the worktable 1. The multiple support columns 12 are evenly distributed on the upper end of the worktable 1. A bearing plate 13 is fixedly connected to the upper end of the support column 12. A positioning hole 14 is opened through the center of the bearing plate 13. Second grooves 18 are opened through the left and right sides of the upper end of the bearing plate 13. The second grooves 18 are adapted to the second slider 105. A limiting plate 15 is fixedly connected to the inner wall of the second groove 18. A third groove 16 is opened through the left end of the second slider 105. The limiting plate 15 is adapted to the third groove 16. A clamping block 17 is fixedly connected to the upper end of the second slider 105. Since the second grooves 18 are adapted to the second slider 105, the clamping block 17 can clamp workpieces of different diameters, which improves the practicality of the equipment. By setting the V-shaped clamping block 17, a uniform contact surface can be provided, thereby effectively improving the clamping stability and accuracy of cylindrical workpieces.

[0024] In use, the workpiece is first placed on the upper end of the bearing plate 13 and coaxially positioned through the positioning hole 14. Then, the cylinder 102 is started, and the cylinder 102 drives the first sliding block to slide on the inner wall of the first groove 7. The first sliding block moves the first rack 3 to the left through the first connecting block 2, thereby driving the gear ring 5 to rotate. The gear ring 5 drives the second rack 6 to move to the right, realizing the synchronous movement of the two clamping blocks 17. Through the roller 10 at the rear end of the first rack 3, the first rack 3 and the gear ring 5 can be tightly fitted, which solves the problem that the transmission components cannot move synchronously, which may cause the axis of the workpiece and the axis of the fixture to be inconsistent, resulting in axis error during the processing and affecting the processing accuracy.

[0025] During the movement, since the second groove 18 is adapted to the second slider 105, the clamping block 17 can clamp workpieces of different diameters, which improves the practicality of the equipment.

[0026] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A cylindrical workpiece clamping device with centering function, comprising a worktable (1); characterized in that: It also includes a first fixed column (4) and a transmission assembly; the lower end of the worktable (1) is fixedly connected to the first fixed column (4), the outer wall of the first fixed column (4) is rotatably provided with a toothed ring (5), the front end of the toothed ring (5) is provided with a first rack (3), the other end of the toothed ring (5) is symmetrically provided with a second rack (6), the first rack (3), the second rack (6) and the toothed ring (5) mesh with each other, the lower end of the worktable (1) is fixedly connected to the second fixed column (9), the outer wall of the second fixed column (9) is rotatably provided with a roller (10), the outer wall of the roller (10) is in contact with the rear end of the first rack (3).

2. The cylindrical workpiece clamping device with centering function according to claim 1, characterized in that: The workbench (1) has a first groove (7) at its lower end. A first slider (8) is slidably arranged on the inner wall of the first groove (7). A first connecting block (2) is fixedly connected to the lower end of the first slider (8). The rear end of the first connecting block (2) is fixedly connected to the front end of the first rack (3). Support blocks (11) are fixedly connected to the four corners of the lower end of the workbench (1).

3. The cylindrical workpiece clamping device with centering function according to claim 1, characterized in that: The transmission assembly includes a first mounting base (101), a cylinder (102), a fixing block (103), and a second connecting block (104); the first mounting base (101) is fixedly connected to the upper end of the worktable (1), the cylinder (102) is hinged to the upper end of the first mounting base (101), the top end of the telescopic rod of the cylinder (102) is fixedly connected to the fixing block (103), the other end of the fixing block (103) is fixedly connected to the second connecting block (104), and the lower end of the second connecting block (104) is fixedly connected to the upper end of the first slider (8).

4. The cylindrical workpiece clamping device with centering function according to claim 3, characterized in that: The transmission assembly also includes a second slider (105), a slide rod (106), a blocking block (107), and a second mounting base (108); the second slider (105) is fixedly connected to the rear end of the second connecting block (104), the slide rod (106) is provided through the left end of the second slider (105), the second slider (105) is slidably disposed on the outer wall of the slide rod (106), the second mounting base (108) is fixedly connected to the outer walls of the left and right ends of the slide rod (106), and the blocking block (107) is fixedly connected to the outer side of the second slider (105).

5. The cylindrical workpiece clamping device with centering function according to claim 1, characterized in that: Multiple support columns (12) are fixedly connected to the upper end of the workbench (1). The multiple support columns (12) are evenly distributed on the upper end of the workbench (1). A bearing plate (13) is fixedly connected to the upper end of the support column (12). A positioning hole (14) is opened through the center of the bearing plate (13).

6. The cylindrical workpiece clamping device with centering function according to claim 5, characterized in that: The upper left and right sides of the support plate (13) are provided with a second groove (18), which is adapted to the second slider (105).

7. The cylindrical workpiece clamping device with centering function according to claim 6, characterized in that: The inner wall of the second groove (18) is fixedly connected to a limiting plate (15), and the left end of the second slider (105) is provided with a third groove (16). The limiting plate (15) is adapted to the third groove (16), and the upper end of the second slider (105) is fixedly connected to a clamping block (17).

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