Clamping tool for machining large arm of excavator

Abstract

The utility model discloses an excavator big arm machining clamping tool which comprises a first support, a second support, a third support, a workbench, a range finder and a centering device, the first support is provided with a first limiting structure, the second support is provided with a second limiting structure, and the third support is provided with a third limiting structure. The first support, the second support and the third support are sequentially arranged on the workbench in the length direction of the workbench, the range finder is used for detecting the distance between the excavator large arm and the range finder, and the centering device is used for pushing the excavator large arm to move in the width direction of the workbench. Wherein the first limiting structure and the third support are used for limiting the excavator large arm to move, and the second limiting structure is used for limiting the excavator large arm to move in the direction away from the table top of the workbench. By arranging the distance measuring instrument and the centering device, the position of the excavator big arm can be accurately detected and adjusted, the positioning accuracy of the excavator big arm on the workbench is ensured, personal errors can be reduced, and the machining quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of excavator manufacturing, and in particular to a tooling for machining and clamping excavator booms. Background Technology

[0002] The excavator boom is one of the key structural components of an excavator, and its manufacturing quality directly affects the overall performance of the excavator. The boom is welded from multiple metal plates, including side webs, inner and outer folding flanges, front support, middle support, rear support, and upper ear plate. Each of these components has hinge holes. During production, the four sets of hinge holes on both sides of the boom require milling and boring, and the front assembly and the inner opening of the upper ear plate need surface scraping. To ensure machining accuracy, the clamped excavator boom must maintain a minimal deviation from the tooling centerline.

[0003] Currently, the clamping of excavator booms mainly adopts mechanical clamping methods, which have the following shortcomings:

[0004] High labor intensity: It requires at least two operators to work together to complete the calibration centerline and clamping work, which increases the workload of employees.

[0005] Safety hazards: Manual operation processes are prone to safety accidents.

[0006] Low positioning efficiency: Manually adjusting the clamping limit device takes a long time, which affects the overall production efficiency.

[0007] Difficulty in guaranteeing accuracy: Manual adjustments cannot guarantee that high precision requirements can be met every time, especially for complex geometric dimension control and the difference in precision requirements during the excavator boom machining process, making it even more difficult to achieve consistent and stable manual adjustments. Utility Model Content

[0008] In order to overcome at least one of the defects of the prior art, the present invention provides a machining clamping fixture for excavator booms, which can solve the problems of high labor intensity, safety hazards, low positioning efficiency and low positioning accuracy caused by manual adjustment during the clamping process of excavator booms.

[0009] The technical solution adopted by this utility model to solve its problem is:

[0010] A tooling fixture for machining excavator booms, comprising:

[0011] A first support, wherein the first support is provided with a first limiting structure;

[0012] The second support is provided with a second limiting structure;

[0013] The third support;

[0014] A workbench, wherein the first support, the second support, and the third support are sequentially arranged on the workbench along its length;

[0015] A rangefinder, used to detect the distance between the excavator boom and the rangefinder;

[0016] Centering device, the centering device being used to push the excavator boom to move in the width direction of the workbench;

[0017] The first limiting structure and the third support are used to limit the movement of the excavator boom along the length of the workbench and to limit the movement of the excavator boom away from the workbench surface. The second limiting structure is used to limit the movement of the excavator boom away from the workbench surface.

[0018] By adopting the above scheme and setting up a rangefinder and centering device, the position of the excavator boom can be accurately detected and adjusted, ensuring its positioning accuracy on the workbench. This helps reduce human error and improve processing quality. The first limit structure, the second limit structure, and the third support work together to restrict the movement of the excavator boom in multiple directions on the workbench, thereby ensuring stability and reliability during clamping and preventing displacement or deformation during processing. The centering device allows the operator to control it to push the excavator boom to the correct position, greatly simplifying the clamping process, reducing manual intervention, and improving work efficiency. Correspondingly, the increased automation reduces the direct involvement of operators in complex and dangerous clamping operations, lowers labor intensity, and significantly improves operational safety. In addition, due to the use of a high-efficiency centering device and an automated positioning system, the entire clamping process becomes faster, shortening clamping time and improving the overall efficiency of the production line.

[0019] Furthermore, the first support is slidably mounted on the worktable, and the sliding direction of the first support is the length direction of the worktable; and / or, the third support is slidably mounted on the worktable, and the sliding direction of the third support is the length direction of the worktable.

[0020] By adopting the above solution, the positions of the first support and / or the third support can be flexibly adjusted by allowing the first support and / or the third support to slide along the length of the worktable to accommodate excavator booms of different lengths. This makes the clamping fixture applicable to excavator booms of various models and sizes, improving the versatility and adaptability of the equipment.

[0021] Furthermore, the sliding design allows operators to precisely adjust the position of the first and / or third supports as needed, thereby ensuring the accurate positioning of the excavator boom on the worktable.

[0022] Furthermore, the bottom of the first support is provided with a sliding groove and a threaded hole, and the worktable is provided with a slide rail on the side facing the first support. The first support and the worktable are slidably connected through the sliding groove and the slide rail. A first lead screw passes through the threaded hole of the first support. The rotation of the first lead screw can drive the first support to reciprocate along the length direction of the worktable.

[0023] By adopting the above solution, the position of the first support can be finely adjusted by rotating the first lead screw, thereby achieving very high positioning accuracy. This ensures the precise positioning of the excavator boom during processing and improves processing quality. Furthermore, the position of the first support can be easily adjusted by rotating the first lead screw, eliminating the need for complex mechanical operations or manual handling, simplifying the operation process and improving the operator's work efficiency.

[0024] Furthermore, the bottom of the third support is provided with a sliding groove and a threaded hole, and the worktable is provided with a slide rail on the side facing the third support. The third support and the worktable are slidably connected through the sliding groove and the slide rail. A second lead screw passes through the threaded hole of the third support. The rotation of the second lead screw can drive the third support to reciprocate along the length direction of the worktable.

[0025] By adopting the above solution, the position of the third support can be finely adjusted by rotating the second lead screw, thereby achieving very high positioning accuracy. This ensures the precise positioning of the excavator boom during processing and improves processing quality. Furthermore, the position of the first support can be easily adjusted by rotating the second lead screw, eliminating the need for complex mechanical operations or manual handling, simplifying the operation process and improving operator efficiency.

[0026] Furthermore, the first limiting structure is a first pressure plate assembly, which includes a first driving member and a first pressure plate. The first driving member is connected to the first pressure plate so that the first driving member drives the first pressure plate to move and press the excavator boom.

[0027] By adopting the above scheme, the first driving component drives the first pressure plate to press the excavator boom, which can provide a uniform and stable clamping force, ensuring that the boom will not shift or loosen during processing, thereby improving the stability and reliability of clamping.

[0028] Furthermore, the second limiting structure is a second pressure plate assembly, which includes a second driving member and a second pressure plate. The second driving member is connected to the second pressure plate so that the second driving member drives the second pressure plate to move and press the excavator boom.

[0029] By adopting the above solution, the second driving component drives the second pressure plate to press the excavator boom, which can provide a uniform and stable clamping force, ensuring that the boom will not shift or loosen during processing, thereby improving the stability and reliability of clamping.

[0030] Furthermore, the third support is provided with an abutment seat to abut and restrict the movement of the excavator boom away from the first support.

[0031] By adopting the above scheme, the abutment seat, together with the first and second limiting structures, forms a stable fixing system, ensuring that the excavator boom will not shift or loosen during processing.

[0032] Furthermore, the centering device includes a first pushing member, a first limiting seat, a third pushing member, and a third limiting seat. The first pushing member and the first limiting seat are both disposed on the first support, and the third pushing member and the third limiting seat are both disposed on the third support. The first pushing member and the third pushing member are both disposed on the same side of the excavator boom, and the first limiting seat and the third limiting seat are both disposed on the other side of the excavator boom.

[0033] By adopting the above scheme, the first and third pushing components act on the head and tail of the excavator boom respectively, enabling stable pushing of the excavator boom from one side. Simultaneously, the first and third limiting seats provide limiting on the other side, allowing for precise centering. This symmetrical arrangement ensures the excavator boom's centered position on the workbench, improving machining accuracy.

[0034] Furthermore, the centering device includes a second pushing member and a second limiting seat, both of which are disposed on the second support, and the second limiting seat and the second support are respectively located on both sides of the excavator boom.

[0035] By adopting the above scheme, by setting a second pusher and a second limit seat on the second support, the second pusher acts on the middle of the excavator boom, which can push the excavator boom and achieve centering.

[0036] Furthermore, the rangefinder is mounted on the second support.

[0037] By adopting the above scheme, the rangefinder is positioned on the second support, precisely corresponding to the middle of the excavator boom, allowing for more accurate measurement of the workpiece's center position. This helps ensure precise positioning of the excavator boom throughout the clamping and machining process, reducing positional deviations and improving machining quality.

[0038] In summary, the excavator boom machining and clamping fixture provided by this utility model has the following technical effects:

[0039] 1. By setting up a rangefinder and centering device, the position of the excavator boom can be accurately detected and adjusted, ensuring its positioning accuracy on the workbench. This helps reduce human error and improve processing quality.

[0040] 2. The first limiting structure, the second limiting structure, and the third support work together to restrict the movement of the excavator boom in multiple directions on the workbench, thereby ensuring stability and reliability during the clamping process and preventing displacement or deformation during processing.

[0041] 3. The centering device allows operators to control it to push the excavator boom to the correct position, greatly simplifying the clamping process, reducing manual intervention, and improving work efficiency.

[0042] 4. Increased automation reduces the need for operators to directly participate in complex and dangerous clamping operations, lowers labor intensity, and significantly improves operational safety.

[0043] 5. Thanks to the adoption of efficient centering devices and automated positioning systems, the entire clamping process has become faster, shortening clamping time and improving the overall efficiency of the production line. Attached Figure Description

[0044] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0045] Figure 2 This is a partial structural diagram of the first support of this utility model;

[0046] Figure 3 This is a partial structural diagram of the second support of this utility model;

[0047] Figure 4 This is a partial structural diagram of the third support of this utility model.

[0048] The meanings of the reference numerals in the attached drawings are as follows: 1. First support; 11. First limiting structure; 111. First driving component; 112. First pressure plate; 12. First lead screw; 2. Second support; 21. Second limiting structure; 211. Second driving component; 212. Second pressure plate; 3. Third support; 31. Abutment seat; 32. Second lead screw; 4. Worktable; 5. Rangefinder; 61. First pushing component; 62. First limiting seat; 63. Second pushing component; 64. Second limiting seat; 65. Third pushing component; 66. Third limiting seat; 7. Excavator boom. Detailed Implementation

[0049] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described and discussed below with reference to the accompanying drawings. Obviously, what is described here is only a part of the examples of this invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the protection scope of this invention.

[0050] To facilitate understanding of the embodiments of this utility model, further explanations and descriptions will be provided below with reference to the accompanying drawings and specific embodiments. These embodiments do not constitute a limitation on the embodiments of this utility model.

[0051] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0053] See Figures 1-4 This utility model discloses a clamping fixture for machining an excavator boom, including a first support 1, a second support 2, a third support 3, a worktable 4, a rangefinder 5, and a centering device. The first support 1 is provided with a first limiting structure 11, and the second support 2 is provided with a second limiting structure 21. The first support 1, the second support 2, and the third support 3 are sequentially arranged on the worktable 4 along its length. The rangefinder 5 is used to detect the distance between the excavator boom 7 and the rangefinder 5. The centering device is used to push the excavator boom 7 to move in the width direction of the worktable 4. The first limiting structure 11 and the third support 3 are used to restrict the movement of the excavator boom 7 along the length direction of the worktable 4 and to restrict the movement of the excavator boom 7 away from the surface of the worktable 4. The second limiting structure 21 is used to restrict the movement of the excavator boom 7 away from the surface of the worktable 4.

[0054] Specifically, the first support 1, the second support 2, and the third support 3 are sequentially arranged on the worktable 4 along its length, corresponding to the head, middle, and tail of the excavator boom 7, respectively. The first support 1 has a first limiting structure 11, and the second support 2 has a second limiting structure 21, both used to restrict the movement of the excavator boom 7 relative to the worktable 4. The specific limiting structures used for the first and second limiting structures 11 and 21 are not limited here, as long as they can effectively limit the movement of the excavator boom 7. A rangefinder 5 can be installed on one side of the excavator boom 7, capable of measuring the lateral distance of the excavator boom 7. The rangefinder 5 can be a laser detector or other distance measuring equipment. The centering device can push the excavator boom 7 along the width of the worktable 4.

[0055] The working principle of the above structure:

[0056] During the clamping process of the excavator boom 7, the excavator boom 7 is placed on the workbench 4. The head of the excavator boom 7 is placed on the first support 1, the middle part is placed on the second support 2, and the tail part is placed on the third support 3. The first support 1 and the third support 3 cooperate with the second support 2 to limit the movement of the excavator boom 7 along the length direction of the workbench 4. The first limiting structure 11 and the second limiting structure 21 limit the excavator boom 7 in the direction perpendicular to the surface of the workbench 4. The rangefinder 5 detects the distance of the excavator boom 7 relative to the rangefinder 5 to obtain the position of the excavator boom 7 in the width direction of the workbench 4. The centering device pushes the excavator boom 7 to move along the width direction of the workbench 4, thereby completing the centering and limiting of the excavator boom 7, which facilitates subsequent operations.

[0057] See Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, in order to facilitate the applicability of the clamping fixture, the first support 1 is slidably mounted on the worktable 4, and the sliding direction of the first support 1 is the length direction of the worktable 4, and / or, the third support 3 is slidably mounted on the worktable 4, and the sliding direction of the third support 3 is the length direction of the worktable 4.

[0058] Specifically, by allowing the first support 1 and / or the third support 3 to slide along the length direction on the worktable 4, the positions of the first support 1 and / or the third support 3 can be flexibly adjusted to accommodate excavator booms 7 of different lengths, so that the clamping fixture can be applied to excavator booms 7 of various models and sizes, thereby improving the versatility and adaptability of the equipment.

[0059] See Figure 2As shown, in this embodiment, in order to improve the convenience and accuracy of adjusting the first support 1, the bottom of the first support 1 is provided with a sliding groove and a threaded hole, and the worktable 4 is provided with a slide rail on the side facing the first support 1. The first support 1 and the worktable 4 are slidably connected through the sliding groove and the slide rail. The threaded hole of the first support 1 is provided with a first lead screw 12. The rotation of the first lead screw 12 can drive the first support 1 to reciprocate along the length direction of the worktable 4.

[0060] Specifically, the excavator boom 7 is placed on the workbench 4 and roughly aligned with the clamping position. By rotating the first lead screw 12, the first support 1 is moved along the slide rail to the desired position. The operation of the first lead screw 12 can be achieved by manually rotating the lead screw or by using automated equipment such as an electric motor. Based on the data provided by the rangefinder 5 or other measuring tools, the position of the first support 1 is finely adjusted to ensure that it is accurately aligned with the end of the excavator boom 7.

[0061] See Figure 4 As shown, in this embodiment, in order to improve the convenience and accuracy of adjusting the third support 3, the bottom of the third support 3 is provided with a sliding groove and a threaded hole, and the worktable 4 is provided with a slide rail on the side facing the third support 3. The third support 3 and the worktable 4 are slidably connected through the sliding groove and the slide rail. The threaded hole of the third support 3 is provided with a second lead screw 32. The rotation of the second lead screw 32 can drive the third support 3 to reciprocate along the length direction of the worktable 4.

[0062] The sliding process and working principle of the third support 3 are the same as those of the adjustment of the first support 1, and will not be repeated here.

[0063] See Figure 2 As shown, in some embodiments, the first limiting structure 11 is a first pressure plate assembly, which includes a first driving member 111 and a first pressure plate 112. The first driving member 111 is connected to the first pressure plate 112 so that the first driving member 111 drives the first pressure plate 112 to move and press the excavator boom 7.

[0064] Specifically, the first pressure plate assembly includes a first drive component 111 and a first pressure plate 112. The first drive component 111 and the first pressure plate 112 are connected. The first drive component 111 drives the first pressure plate 112 to move, thereby pressing the excavator boom 7. The first drive component 111 can be a drive device such as a cylinder or a hydraulic cylinder. The connection method between the first drive component 111 and the first pressure plate 112 is not limited here, as long as it can ensure the stable positioning of the first pressure plate 112 on the excavator boom 7.

[0065] See Figure 3As shown, in some embodiments, the second limiting structure 21 is a second pressure plate assembly, which includes a second driving member 211 and a second pressure plate 212. The second driving member 211 is connected to the second pressure plate 212 so that the second driving member 211 drives the second pressure plate 212 to move and press the excavator boom 7.

[0066] Specifically, since the second pressure plate 212 corresponds to the middle of the excavator boom 7, it may interfere with the assembly of the excavator boom 7 during assembly. Therefore, the second drive component 211 can be configured as a pressure cylinder with a steering downward pressing function, or the second pressure plate 212 can be connected by a linkage structure. When the second drive component 211 drives the second pressure plate 212 upward, the second pressure rod rotates around the linkage structure and moves away from the assembly position of the excavator boom 7, thereby preventing interference with the assembly of the excavator boom 7. Correspondingly, when the second drive component 211 drives the second pressure plate 212 downward, the second pressure rod rotates around the linkage structure and moves towards the assembly position of the excavator boom 7, pressing the excavator boom 7, thus achieving both no interference with the assembly of the excavator boom 7 and no impact on the limiting of the excavator boom 7. Of course, the above is just an example of the optional second drive component 211 and the connection method between the second drive component 211 and the second pressure plate 212. Other connection methods are not limited here, as long as they can achieve the goal of not interfering with the assembly of the excavator boom 7 and not affecting the limiting of the excavator boom 7.

[0067] See Figure 4 As shown, in this embodiment, the third support 3 is provided with an abutment seat 31 to abut and restrict the excavator boom 7 from moving away from the first support 1.

[0068] Specifically, the abutment seat 31 is set along the length of the worktable 4 toward the excavator boom 7. The abutment seat 31, together with the first limiting structure 11 and the second limiting structure 21, forms a stable fixing system to ensure that the excavator boom 7 will not be displaced or loosened during the processing.

[0069] See Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, the centering device includes a first pushing member 61, a first limiting seat 62, a third pushing member 65, and a third limiting seat 66. The first pushing member 61 and the first limiting seat 62 are both disposed on the first support 1, and the third pushing member 65 and the third limiting seat 66 are both disposed on the third support 3. The first pushing member 61 and the third pushing member 65 are both disposed on the same side of the excavator boom 7, and the first limiting seat 62 and the third limiting seat 66 are both disposed on the other side of the excavator boom 7.

[0070] Specifically, the first pushing member 61 and the third pushing member 65 act on the head and tail of the excavator boom 7 respectively, stably pushing the excavator boom 7 from one side. Simultaneously, the first limiting seat 62 and the third limiting seat 66 provide limiting on the other side, enabling precise centering. This symmetrical arrangement ensures the center position of the excavator boom 7 on the worktable 4, improving machining accuracy. The first pushing member 61 and the third pushing member 65 can be a telescopic rod, cylinder, hydraulic cylinder, or other pushing structure. Furthermore, the first pushing member 61 corresponds to the first limiting seat 62, and the third pushing member 65 corresponds to the third limiting seat 66. While pushing the excavator boom 7 to move along the width direction of the worktable 4, the cooperation of the first pushing member 61 and the first limiting seat 62, and the cooperation of the third pushing member 65 and the third limiting seat 66, also allows for the movement of the excavator boom 7 along the width direction of the worktable 4.

[0071] Of course, the first limit seat 62 and the third limit seat 66 can also be equipped with push rods or other pushing devices to improve the centering effect of the excavator boom 7 and realize bidirectional adjustment of the excavator boom 7.

[0072] See Figure 3 As shown, in some embodiments, the centering device includes a second pusher 63 and a second limiting seat 64, both of which are disposed on the second support 2. The second limiting seat 64 and the second support 2 are respectively on both sides of the excavator boom 7.

[0073] Specifically, the second support 2 is provided with a second pusher 63 and a second limiter 64, and the second pusher 63 acts on the middle part of the excavator boom 7, which can push the excavator boom 7, realize the centering of the excavator boom 7 and limit it after the centering is completed.

[0074] Of course, the second limit seat 64 can also be equipped with a push rod or other pushing device to improve the centering effect of the excavator boom 7 and realize bidirectional adjustment of the excavator boom 7. In addition, multiple sets of second pushers 63 and second limit seats 64 can also be set at the second support 2 to achieve stable driving of the excavator boom 7. The specific number and setting position can be selected according to actual needs.

[0075] See Figure 1 As shown, the centering device can simultaneously act on the head, middle and tail of the excavator boom 7 using the first pusher 61, the first limit seat 62, the second pusher 63, the second limit seat 64, the third pusher 65 and the third limit seat 66, thereby improving the pushing effect and the limiting effect after centering.

[0076] See Figure 1 and Figure 3As shown, in some embodiments, in order to improve the measurement accuracy of the rangefinder 5, the rangefinder 5 is mounted on the second support 2.

[0077] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A clamping fixture for machining excavator booms, characterized in that, include: The first support (1) is provided with a first limiting structure (11); The second support (2) is provided with a second limiting structure (21); Third support (3); The workbench (4) is provided with the first support (1), the second support (2) and the third support (3) arranged sequentially along the length of the workbench (4); The rangefinder (5) is used to detect the distance between the excavator boom (7) and the rangefinder (5); A centering device is used to push the excavator boom (7) to move in the width direction of the workbench (4); The first limiting structure (11) and the third support (3) are used to restrict the excavator boom (7) from moving along the length of the workbench (4) and to restrict the excavator boom (7) from moving away from the workbench (4). The second limiting structure (21) is used to restrict the excavator boom (7) from moving away from the workbench (4).

2. The excavator boom machining and clamping fixture according to claim 1, characterized in that, The first support (1) is slidably mounted on the worktable (4), and the sliding direction of the first support (1) is the length direction of the worktable (4), and / or, the third support (3) is slidably mounted on the worktable (4), and the sliding direction of the third support (3) is the length direction of the worktable (4).

3. The excavator boom machining and clamping fixture according to claim 2, characterized in that, The first support (1) has a groove and a threaded hole at its bottom. The worktable (4) has a slide rail on the side facing the first support (1). The first support (1) and the worktable (4) are slidably connected by the groove and the slide rail. The threaded hole of the first support (1) is fitted with a first lead screw (12). The rotation of the first lead screw (12) can drive the first support (1) to reciprocate along the length of the worktable (4).

4. A machining and clamping fixture for an excavator boom according to claim 2 or 3, characterized in that, The bottom of the third support (3) is provided with a sliding groove and a threaded hole. The worktable (4) is provided with a slide rail on the side facing the third support (3). The third support (3) and the worktable (4) are slidably connected through the sliding groove and the slide rail. The threaded hole of the third support (3) is provided with a second lead screw (32). The rotation of the second lead screw (32) can drive the third support (3) to reciprocate along the length direction of the worktable (4).

5. The excavator boom machining and clamping fixture according to claim 1, characterized in that, The first limiting structure (11) is a first pressure plate assembly. The first pressure plate assembly includes a first driving member (111) and a first pressure plate (112). The first driving member (111) is connected to the first pressure plate (112) so that the first driving member (111) drives the first pressure plate (112) to move and press the excavator boom (7).

6. The excavator boom machining and clamping fixture according to claim 1, characterized in that, The second limiting structure (21) is a second pressure plate assembly. The second pressure plate assembly includes a second driving member (211) and a second pressure plate (212). The second driving member (211) is connected to the second pressure plate (212) so that the second driving member (211) drives the second pressure plate (212) to move and press the excavator boom (7).

7. The excavator boom machining and clamping fixture according to claim 1, characterized in that, The third support (3) is provided with an abutment seat (31) for abutting and restricting the excavator boom (7) from moving away from the first support (1).

8. The excavator boom machining and clamping fixture according to claim 1, characterized in that, The centering device includes a first pusher (61), a first limiting seat (62), a third pusher (65), and a third limiting seat (66). The first pusher (61) and the first limiting seat (62) are both located on the first support (1), and the third pusher (65) and the third limiting seat (66) are both located on the third support (3). The first pusher (61) and the third pusher (65) are both located on the same side of the excavator boom (7), and the first limiting seat (62) and the third limiting seat (66) are both located on the other side of the excavator boom (7).

9. A clamping fixture for machining excavator booms according to claim 1 or 8, characterized in that, The centering device includes a second pusher (63) and a second limiting seat (64), both of which are mounted on the second support (2). The second limiting seat (64) and the second support (2) are located on both sides of the excavator boom (7).

10. The excavator boom machining and clamping fixture according to claim 1, characterized in that, The rangefinder (5) is mounted on the second support (2).

Images