Anti-vibration clamp for machining gearbox shell

Abstract

The utility model discloses an anti-vibration clamp for machining a gearbox shell, which comprises a bottom plate, a plurality of support blocks are arranged on the bottom plate, an ellipse is defined by the plurality of support blocks, and a pair of positioning pins is arranged on the bottom plate; a plurality of pressing plates are arranged on the bottom plate outside the plurality of supporting blocks; a fixing rod is arranged in the middle of the bottom plate, and a conical pressing block is arranged at the top of the fixing rod. The multiple pressing plates and the conical pressing blocks at the tops of the fixing rods are designed in an over-positioning mode to form a stable pyramid structure, vibration of the top of the gearbox shell to be machined in the machining process is effectively prevented, and the technical problems that in the prior art, due to the fact that multiple floating supports are additionally arranged on a clamp, parts are inconvenient to assemble and disassemble, and the surfaces are collided are solved.

Description

Technical Field

[0001] This utility model belongs to the field of gearboxes and relates to a clamp, specifically a vibration-damping clamp for processing gearbox housings. Background Technology

[0002] Machining fixtures are widely used in the machining industry and typically consist of positioning elements, support elements, clamping devices, and a fixture base. However, for some parts with significant height, it is necessary to add anti-vibration mechanisms to the fixture to eliminate or reduce the impact of vibration on the machining quality. Conventional anti-vibration methods often involve adding multiple floating supports to the fixture. After the floating support heads contact the part, they restrict the part's degrees of freedom in various directions, thereby achieving the purpose of vibration isolation. While this approach is reliable and effective, it requires multiple floating supports to achieve the desired vibration isolation effect, has certain space requirements, and the addition of floating supports can also cause inconvenience during part loading and unloading, as well as surface damage. Furthermore, due to its high design and manufacturing costs and long production cycle, it is not suitable for the initial trial production stage of parts. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a vibration-damping fixture for processing gearbox housings, so as to solve the technical problems of inconvenience in loading and unloading parts and surface bumps caused by adding multiple floating supports to the fixture in the existing technology.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A vibration damping fixture for machining a gearbox housing includes a base plate, a plurality of support blocks arranged on the base plate, the plurality of support blocks forming an ellipse, and a pair of positioning pins arranged on the base plate.

[0006] Multiple clamping plates are provided on the outer base plate of the multiple support blocks;

[0007] A fixing rod is provided in the middle of the base plate, and a conical pressure block is provided at the top of the fixing rod.

[0008] This utility model also includes the following technical features:

[0009] The conical pressure block has a bolt through hole, and a clamping bolt is installed in the bolt through hole. The clamping bolt is threaded to the top of the fixing rod.

[0010] The size of the hole through which the bolt passes is greater than the maximum outer diameter of the clamping bolt.

[0011] The top of the fixing rod does not contact the inner cavity of the gearbox housing to be processed.

[0012] The base plate is equipped with lifting rings.

[0013] The fixing rod is threaded onto the base plate; the support block is fixed to the base plate by bolts.

[0014] The positioning pin is fixed to the base plate by bolts; the clamping plate is connected to the base plate by bolts.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are:

[0016] (I) The multiple pressing plates and the conical pressing block at the top of the fixing rod in this utility model form a stable pyramid structure through the over-positioning design, which effectively prevents the top of the gearbox housing to be processed from vibrating during the processing, and also avoids the technical problems of inconvenient loading and unloading of parts and surface bumps caused by adding multiple floating supports on the fixture in the prior art.

[0017] (II) By using the over-positioning principle, the fixture takes the central bearing hole at the top of the gearbox housing to be processed as the reference. By restricting the degree of freedom of the bearing hole opening, the degree of freedom of the top of the part is indirectly restricted, thereby achieving the effect of vibration prevention. The over-positioning design of the tapered pressure block at the top of the fixing rod ensures that the tapered surface always keeps in contact with the bearing hole contour of the gearbox housing to be processed during the clamping process, thereby ensuring the reliability of vibration prevention.

[0018] (III) This fixture does not require floating support, has high space utilization, good vibration damping effect, and is simple to manufacture. It saves production costs and greatly shortens the production cycle of the fixture. In addition, the fixture is easy to operate and use, and has certain promotional value. Furthermore, it effectively utilizes the narrow space inside the gearbox housing, and there is no risk of collision during installation. It has high space utilization, no risk of collision, and good processability and promotion potential. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the conical pressure block in the middle;

[0021] Figure 3 This is a schematic diagram of the working process of this utility model.

[0022] The meanings of the labels in the diagram are as follows: 1. Clamping bolt; 2. Conical clamping block; 3. Fixing rod; 4. Support block; 5. Clamping plate; 6. Positioning pin; 7. Base plate; 8. Lifting ring; 9. Bolt through hole.

[0023] The specific content of this utility model will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, all components in this utility model are components known in the art.

[0025] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0026] This utility model discloses a vibration damping fixture for processing gearbox housings, including a base plate 7, a plurality of support blocks 4 arranged on the base plate, the plurality of support blocks 4 forming an ellipse, and a pair of positioning pins 6 arranged on the base plate 7.

[0027] Multiple pressing plates 5 are provided on the base plate 7 outside the multiple support blocks 4;

[0028] A fixing rod 3 is provided in the middle of the base plate 7, and a conical pressure block 2 is provided at the top of the fixing rod 3.

[0029] In the above technical solution, the positioning pin 6 is used to engage with the pin hole between the gearbox housing to be processed, so as to realize the positioning of the gearbox housing to be processed; the conical pressure block 2 is made of nylon and adopts the structure of a conical pin.

[0030] The specific operating steps for using this fixture are as follows:

[0031] (1) Loosen all clamping plates 5 and clamping bolts 1 of the fixture, and lift the gearbox housing to be processed onto the support block 4 of the fixture so that the pin hole of the gearbox housing to be processed falls into the positioning pin 6.

[0032] (2) Tighten the clamping plate 5 in sequence with standard bolts.

[0033] (3) Place the tapered pressure block 2 into the top bearing hole of the gearbox housing to be processed, pass the clamping bolt 1 through the tapered pressure block 2 and screw it into the top threaded hole of the fixing rod 3, and tighten the clamping bolt 1 with a torque wrench. At this point, all the clamping work of the gearbox housing to be processed is completed, and the next machining step can be carried out.

[0034] Multiple clamping plates 5 and the conical pressure block 2 at the top of the fixing rod 3 form a stable pyramid structure through positioning design, which effectively prevents the top of the gearbox housing to be processed from vibrating during processing, and also avoids the technical problems of inconvenient loading and unloading of parts and surface bumps caused by adding multiple floating supports on the fixture in the prior art.

[0035] By using the over-positioning principle, the fixture takes the central bearing hole at the top of the gearbox housing to be processed as a reference. By restricting the degree of freedom of the bearing hole opening, the degree of freedom of the top of the part is indirectly restricted, thereby achieving the effect of vibration prevention. The over-positioning design of the conical pressure block 2 at the top of the fixing rod 3 ensures that the conical surface always keeps in contact with the bearing hole contour of the gearbox housing to be processed during the clamping process, thereby ensuring the reliability of vibration prevention.

[0036] Specifically, the conical pressure block 2 has a bolt through hole 9, and a clamping bolt 1 is installed in the bolt through hole 9. The clamping bolt 1 is threadedly connected to the top of the fixing rod 3.

[0037] Specifically, the bolt passes through hole 9 in a size larger than the maximum outer diameter of clamping bolt 1.

[0038] In the above technical solution, the two have a certain amount of floating when they are used together, which ensures that the conical surface of the conical pressure block 2 and the bearing hole contour of the part always remain in contact during the clamping process, thereby ensuring the vibration prevention effect.

[0039] Specifically, the top of the fixing rod 3 does not contact the inner cavity of the gearbox housing to be processed.

[0040] The aforementioned technologies mitigate the risk of damage during parts loading and unloading.

[0041] Specifically, the base plate 7 is equipped with lifting rings 8 for hoisting or moving the device.

[0042] Specifically, the fixing rod 3 is threaded onto the base plate 7; the support block 4 is fixed onto the base plate 7 by bolts, and the bolt connection facilitates installation and disassembly.

[0043] Specifically, the positioning pin 6 is fixed to the base plate 7 by bolts; the clamping plate 5 is connected to the base plate 7 by bolts, and the bolt connection facilitates installation and disassembly.

Claims

1. A vibration damping fixture for machining gearbox housings, characterized in that, Includes a base plate (7), on which a plurality of support blocks (4) are provided, the plurality of support blocks (4) forming an ellipse, and a pair of positioning pins (6) are provided on the base plate (7); Multiple clamping plates (5) are provided on the base plate (7) outside the multiple support blocks (4); A fixing rod (3) is provided in the middle of the base plate (7), and a conical pressure block (2) is provided at the top of the fixing rod (3).

2. The vibration damping fixture for machining a gearbox housing as described in claim 1, characterized in that, The conical pressure block (2) has a bolt through hole (9), and a clamping bolt (1) is provided in the bolt through hole (9). The clamping bolt (1) is threadedly connected to the top of the fixing rod (3).

3. The vibration damping fixture for machining a gearbox housing as described in claim 2, characterized in that, The size of the hole (9) through which the bolt passes is greater than the maximum outer diameter of the clamping bolt (1).

4. The vibration damping fixture for machining a gearbox housing as described in claim 1, characterized in that, The top of the fixing rod (3) does not contact the inner cavity of the gearbox housing to be processed.

5. The vibration damping fixture for machining a gearbox housing as described in claim 1, characterized in that, The base plate (7) is provided with lifting rings (8).

6. The vibration damping fixture for machining a gearbox housing as described in claim 1, characterized in that, The fixing rod (3) is threaded onto the base plate (7); the support block (4) is fixed onto the base plate (7) by bolts.

7. The vibration damping fixture for machining a gearbox housing as described in claim 1, characterized in that, The positioning pin (6) is fixed to the base plate (7) by bolts; the clamping plate (5) is connected to the base plate (7) by bolts.

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