Gear shaper clamping device for large workpieces

Abstract

The utility model discloses a gear shaping machine clamping device for large workpieces, and relates to the technical field of gear shaping tools. Comprising a workbench, a bottom ring is placed on the outer surface of the top of the workbench, a bottom disc is clamped to the bottom ring, clamping columns which are annularly distributed at equal intervals are installed on the outer surface of the top of the bottom ring, the clamping columns are sleeved with the bottom disc, an annular tool is clamped to the bottom ring through the clamping columns, and a containing opening is formed in the outer surface of the top of the annular tool and used for containing a workpiece. A workpiece can be placed in the placing opening and sleeved with the annular tool, then the stabilizing assembly can press the top of the workpiece downwards, then the workpiece is pressed from the inner side to be prevented from deviating, the effect of convenient clamping is achieved, a servo motor of the stabilizing assembly operates to drive a pressing plate to rotate, and therefore the workpiece can be clamped conveniently. Workpiece machining can be prevented from being hindered, a three-jaw chuck is not needed, product deformation caused by stress is avoided, and the product machining precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of gear hobbing tooling technology, specifically a gear hobbing machine clamping device for large workpieces. Background Technology

[0002] Existing gear hobbing fixtures can only process products with an outer diameter of less than 300mm. When processing products with an outer diameter of 250mm to 300mm, the three-jaw chuck is about the same size as the bottom worktable of the gear hobbing machine after clamping the product. At this time, the space for placing the pressure plate is very small, the chuck is inconvenient to fix to the worktable, and the operation is also cumbersome. In addition, the use of the chuck to hold the workpiece can easily cause the workpiece to deform, affecting the product accuracy and, in severe cases, causing the product to be scrapped. Utility Model Content

[0003] The purpose of this utility model is to provide a clamping device for a gear hoisting machine for large workpieces, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a clamping device for a large workpiece gear hobbing machine, comprising a worktable, a bottom ring placed on the top outer surface of the worktable, and a base plate clamped to the bottom ring, and clamping pins evenly spaced in a ring on the top outer surface of the bottom ring, the base plate being sleeved on the clamping pins, and an annular fixture clamped to the bottom ring through the clamping pins, the annular fixture having a placement opening on its top outer surface for placing the workpiece, a connecting platform installed at the bottom of the inner wall of the annular fixture, and four stabilizing components arranged in a ring on the top outer surface of the connecting platform, the lower pressing end of the stabilizing component being located above the annular fixture, and the side pressing end of the stabilizing component being located inside the placement opening, the stabilizing components being used to stabilize the workpiece.

[0005] Furthermore, the stabilizing component includes an L-shaped plate, which is fixed to the top surface of the connecting platform by bolts. A servo motor is installed on the top surface of the bottom layer of the L-shaped plate. The output shaft of the servo motor is fixed to a connecting plate, and a cylinder is installed on the top surface of the connecting plate. A pressure plate is installed on the top surface of the piston rod of the cylinder, and a first anti-slip pad is installed on the top surface of the pressure plate.

[0006] Furthermore, an electric telescopic rod is installed on the top of one side of the L-shaped plate, and a stop plate is installed at one end of the piston rod of the electric telescopic rod, with a second anti-slip pad installed on the surface of the stop plate.

[0007] Furthermore, the top outer surface of the annular tooling has four arc-shaped openings arranged in a ring, and the inner wall of the arc-shaped openings has a through-hole. The abutment plate and the second anti-slip pad are located inside the arc-shaped openings, and the piston rod of the electric telescopic rod is located inside the through-hole.

[0008] Furthermore, an anti-slip washer is installed on the bottom inner wall of the placement opening, and the anti-slip washer contacts the top outer surface of the backing plate.

[0009] Furthermore, the bottom of the connecting platform contacts the top surface of the chassis, and the bottom surface of the annular tooling is provided with equally spaced, ring-shaped slots, which engage with the locking posts.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] A clamping device for a large workpiece gear hobbing machine can place the workpiece in the placement opening and fit it together with a ring tool. Then, a stabilizing component can press down on the top of the workpiece and then press the workpiece from the inside to prevent it from shifting, thus achieving a convenient clamping effect.

[0012] Meanwhile, the anti-slip pads inside the placement opening further prevent the workpiece from shifting, and the servo motor of the stabilizing component can drive the lower pressure plate to rotate, which can avoid hindering the workpiece processing. Furthermore, there is no need for a three-jaw chuck, which prevents the product from deforming under force and improves the product processing accuracy. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the main cross-sectional structure of the present invention;

[0015] Figure 3 This is a schematic diagram of the stable component structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the bottom ring structure of this utility model.

[0017] In the diagram: 1. Workbench; 2. Base ring; 21. Clamping post; 3. Chassis; 4. Circular fixture; 5. Anti-slip pad; 6. Connecting platform; 8. Stabilizing component; 81. L-shaped plate; 82. Servo motor; 83. Cylinder; 84. Lower pressure plate; 85. First anti-slip pad; 86. Electric telescopic rod; 87. Support plate; 88. Second anti-slip pad. 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] The clamping device for a gear hobbing machine provided by this utility model solves the clamping problem in the processing of large-sized workpieces, achieving stable clamping of the workpiece. This not only improves processing accuracy but also prevents workpiece deformation, making the processing of large-sized workpieces more efficient and reliable. In existing gear hobbing tooling technology, when processing products with dimensions of 250mm to 300mm, the space between the three-jaw chuck and the worktable is limited, resulting in limited space for the pressure plate, inconvenience in fixing the chuck to the worktable, and easy deformation of the workpiece due to uneven force. These problems seriously affect processing efficiency and product quality. When performing gear hobbing processing on large-sized workpieces, the clamping device of this utility model ensures the stability and accuracy of the workpiece during processing. Through the operation of the servo motor, the lower pressure plate can rotate without obstructing the workpiece processing.

[0020] like Figures 1-4 As shown, this utility model provides a technical solution: a clamping device for a large workpiece gear hobbing machine, including a worktable 1, a bottom ring 2 placed on the top outer surface of the worktable 1, and a base plate 3 clamped to the bottom ring 2, and clamping posts 21 evenly distributed in a ring on the top outer surface of the bottom ring 2, the base plate 3 sleeved on the clamping posts 21, and an annular fixture 4 clamped to the bottom ring 2 through the clamping posts 21, the annular fixture 4 has a placement opening on the top outer surface of the annular fixture 4 for placing the workpiece, a connecting platform 6 installed on the bottom of the inner wall of the annular fixture 4, and four stabilizing components 8 distributed in a ring on the top outer surface of the connecting platform 6, the lower pressing end of the stabilizing component 8 is located above the annular fixture 4, and the side pressing end of the stabilizing component 8 is located inside the placement opening, the stabilizing component 8 is used to stabilize the workpiece.

[0021] It should be noted that the workbench 1 can be fixed to the gear hobbing machine with bolts, and then the bottom ring 2 and the base plate 3 can be snapped together. Multiple locking pins 21 will also pass through the round openings set on the base plate 3. Then, multiple locking slots of the annular tooling 4 are snapped together with multiple locking pins 21. Finally, the connecting platform 6 of the annular tooling 4 is connected to the workbench 1 with bolts to complete the assembly of the entire tooling. The lower pressing end is the lower pressing plate 84 and the first anti-slip pad 85, and the side end is the abutment plate 87 and the second anti-slip pad 88.

[0022] The stabilizing component 8 includes an L-shaped plate 81, which is fixed to the top surface of the connecting platform 6 by bolts. A servo motor 82 is mounted on the bottom top surface of the L-shaped plate 81. The output shaft of the servo motor 82 is fixed to a connecting plate, and a cylinder 83 is mounted on the top surface of the connecting plate. A pressure plate 84 is mounted on the top surface of the piston rod of the cylinder 83, and a first anti-slip pad 85 is mounted on the top surface of the pressure plate 84.

[0023] It should be noted that when the workpiece is placed on the placement opening, that is, when the workpiece is fitted onto the annular fixture 4, the lower pressure plate 84 presses the workpiece down as the cylinder 83 contracts. The lower pressure plate 84 is fixed to the cylinder 83 by bolts. Different shapes of lower pressure plates 84 can be replaced as needed, such as L-shaped ones, which can be used to press the workpiece when the height of the workpiece is less than the depth of the placement opening.

[0024] An electric telescopic rod 86 is installed on the top of one side of the L-shaped plate 81, and a stop plate 87 is installed at one end of the piston rod of the electric telescopic rod 86. A second anti-slip pad 88 is installed on the surface of the stop plate 87.

[0025] It should be noted that the second anti-slip pad 88 is arc-shaped, and its curvature matches the arc shape of the annular tooling 4. It can be used to adhere to the inner wall of the workpiece. Under the operation of the electric telescopic rod 86, the second anti-slip pad 88 adheres to the inner wall of the workpiece to prevent the workpiece from sliding.

[0026] The top surface of the ring tool 4 has four arc-shaped openings arranged in a ring. The inner wall of the arc-shaped openings has a through-hole. The abutment plate 87 and the second anti-slip pad 88 are located inside the arc-shaped openings, and the piston rod of the electric telescopic rod 86 is located inside the through-hole.

[0027] It should be noted that the size of the arc-shaped opening is the same as the size of the combined bottom plate 87 and the second anti-slip pad 88.

[0028] An anti-slip washer 5 is installed on the bottom inner wall of the placement port, and the anti-slip washer 5 is in contact with the top outer surface of the backing plate 87.

[0029] It should be noted that the outer diameter of the anti-slip washer 5 is the same as the outer diameter of the annular tool 4, and the bottom surface of the abutment 87 can form a sliding fit with the top surface of the anti-slip washer 5.

[0030] The bottom of the connecting platform 6 contacts the top surface of the chassis 3, and the bottom surface of the annular tool 4 has equally spaced, ring-shaped slots that engage with the locking post 21.

[0031] It should be noted that there are six locking posts 21, and the locking slots 21 are needle-shaped.

[0032] Working principle: The worktable 1 can be fixed to the gear hobbing machine with bolts. Then, the bottom ring 2 and the base plate 3 are snapped together. Multiple locking pins 21 will also pass through the circular openings set on the base plate 3. Then, the multiple slots of the annular fixture 4 are snapped together with the multiple locking pins 21. Finally, the connecting platform 6 of the annular fixture 4 is connected to the worktable 1 with bolts. That is, the workpiece is placed on the placement opening, that is, the workpiece is fitted on the annular fixture 4. Then, the lower pressure plate 84 presses the workpiece tightly when the cylinder 83 retracts. Multiple second anti-slip pads 88 adhere to the inner wall of the workpiece under the operation of the corresponding electric telescopic rod 86 to prevent the workpiece from sliding. Then, processing can be carried out.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A clamping device for a gear hobbing machine for large workpieces, comprising a worktable (1), characterized in that: The workbench (1) has a bottom ring (2) on its top outer surface, and a base plate (3) is attached to the bottom ring (2). The bottom ring (2) has equidistant, ring-shaped locking pins (21) on its top outer surface. The base plate (3) is fitted onto the locking pins (21). The bottom ring (2) is attached to an annular fixture (4) via the locking pins (21). The annular fixture (4) has a placement opening on its top outer surface for placing workpieces. A connecting platform (6) is installed on the bottom of the inner wall of the annular fixture (4). The connecting platform (6) has four ring-shaped stabilizing components (8) on its top outer surface. The downward pressing end of the stabilizing component (8) is located above the annular fixture (4), and the side pressing end of the stabilizing component (8) is located inside the placement opening. The stabilizing component (8) is used to stabilize the workpiece.

2. The clamping device for a large workpiece gear hobbing machine according to claim 1, characterized in that: The stabilizing component (8) includes an L-shaped plate (81), which is fixed to the top surface of the connecting platform (6) by bolts. A servo motor (82) is installed on the bottom top surface of the L-shaped plate (81). The output shaft of the servo motor (82) is fixed to a connecting plate, and a cylinder (83) is installed on the top surface of the connecting plate. A lower pressure plate (84) is installed on the top surface of the piston rod of the cylinder (83), and a first anti-slip pad (85) is installed on the top surface of the lower pressure plate (84).

3. The clamping device for a large workpiece gear hobbing machine according to claim 2, characterized in that: An electric telescopic rod (86) is installed on the top of one side of the L-shaped plate (81), and a stop plate (87) is installed at one end of the piston rod of the electric telescopic rod (86), and a second anti-slip pad (88) is installed on the surface of the stop plate (87).

4. The gear hoisting device for large workpieces according to claim 1, characterized in that: The top surface of the annular tool (4) has four arc-shaped openings arranged in a ring. The inner wall of the arc-shaped openings has a through-hole. The abutment plate (87) and the second anti-slip pad (88) are located inside the arc-shaped openings, and the piston rod of the electric telescopic rod (86) is located inside the through-hole.

5. The gear hoisting device for a large workpiece according to claim 1, characterized in that: The bottom inner wall of the placement port is equipped with an anti-slip washer (5), which is in contact with the top outer surface of the backing plate (87).

6. The gear hoisting device for a large workpiece according to claim 1, characterized in that: The bottom of the connecting platform (6) contacts the top surface of the chassis (3), and the bottom surface of the annular tool (4) is provided with equally spaced grooves in a ring shape, which are engaged with the locking post (21).

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