Bearing support vertical machining integrated clamp for unmanned diesel outboard engine

Abstract

The invention discloses a bearing support vertical machining integrated clamp for an unmanned diesel outboard engine, and belongs to the field of diesel outboard engine machining, the bearing support vertical machining integrated clamp comprises a base and a plurality of independent clamping stations fixedly arranged on the base, and the independent clamping stations correspond to different machining procedures of a bearing support; each independent clamping station comprises a positioning mechanism and a pressing mechanism, and the positioning mechanism adopts an arc surface and a hole of the to-be-machined bearing bracket as a positioning reference so as to realize accurate positioning of the to-be-machined bearing bracket; the pressing mechanism is used for pressing and fixing the to-be-machined bearing support after positioning. The bearing supports to be machined are sequentially clamped on the independent clamping stations and matched with corresponding tools for sequential machining, and all machining contents of the bearing supports to be machined are completed. Fixtures needed by all machining procedures are integrated, accurate positioning is carried out through the arc surfaces and the holes, rapid pressing is carried out through the V-shaped blocks and the pressing plates, clamping is carried out in sequence according to the procedures, and the machining efficiency and the machining precision are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of diesel outboard motor processing technology, and in particular to an integrated fixture for vertically machining bearing brackets for unmanned diesel outboard motors. Background Technology

[0002] Bearing supports are critical precision components of unmanned diesel outboard motors. Their main functions include fixing and supporting the shafting, maintaining the alignment of the overall structure, and bearing and transmitting various complex forces during operation. These components are typically made of cast aluminum alloy to meet the requirements of lightweight construction and structural strength. Due to the critical nature of their function, bearing supports must possess extremely high machining precision to ensure their assembly relationships and mechanical properties.

[0003] For this type of bearing bracket that integrates hole, arc, and end face machining requirements (such as...) Figure 4 , Figure 5 For the part shown, the industry commonly employs a sequential, multi-machine processing method. First, the part is clamped on a lathe using a three-jaw or four-jaw chuck to machine the main holes (such as Φ35 and Φ30 holes) and the Φ80 arc surface (coaxial but not aligned). Due to the irregular shape of the part, this process often requires a specially designed fixture and two clamping operations. Next, the operator uses tools such as a height caliper to manually scribing the semi-finished part to determine the reference for subsequent machining. Finally, the scribed part is transferred to a machining center, where it is clamped and positioned using a vise, and the end face and other holes and arcs that cannot be machined on a lathe are machined according to the scribing reference.

[0004] The existing processing methods described above have several significant drawbacks: (1) During the lathe machining stage, since the four sides of the bearing bracket are not parallel, it is difficult to clamp and position. A special fixture must be designed and manufactured for it, and it needs to be clamped twice, which increases preparation time and cost.

[0005] (2) The material of the part is cast aluminum alloy, and the thinnest part of the wall is only 3mm. The material has low hardness and is prone to elastic or plastic deformation under the clamping force of chuck or vise, which directly leads to the machining accuracy exceeding the tolerance or even scrapping of the part.

[0006] (3) The entire process relies on manual scribing and multiple product change clamping, which is not only cumbersome and inefficient, but also introduces multiple positioning errors and human scribing errors, making it difficult to ensure the stable and reliable form and position tolerance of the parts, and failing to meet the mass production requirements of high-precision bearing brackets. Summary of the Invention

[0007] The technical problem to be solved by the present application is to provide a bearing support vertical plus integrated clamp for unmanned diesel outboard engine, which integrates all clamps required in processing procedures, uses arc surfaces and holes for accurate positioning, uses V-shaped blocks and pressing plates for quick pressing, and sequentially clamps according to procedures, thereby greatly improving processing efficiency and accuracy.

[0008] To solve the above technical problem, the technical solution adopted by the present application is: A bearing support vertical plus integrated clamp for unmanned diesel outboard engine, comprising a base and a plurality of independent clamping stations fixedly arranged on the base, each of the independent clamping stations corresponding to different processing procedures of the bearing support; each of the independent clamping stations comprises a positioning mechanism and a pressing mechanism, the positioning mechanism using arc surfaces and holes of the bearing support to be processed as positioning reference to realize accurate positioning of the bearing support to be processed; the pressing mechanism is used to press and fix the bearing support to be processed after positioning; the bearing support to be processed is sequentially clamped on each of the independent clamping stations and sequentially processed by cooperating with corresponding tools, thereby completing all processing contents of the bearing support to be processed.

[0009] Further improvement of the technical solution of the present application is that the plurality of independent clamping stations are specifically arranged as at least three, i.e., a first procedure clamping station, a second procedure clamping station and a third procedure clamping station.

[0010] Further improvement of the technical solution of the present application is that the first procedure clamping station comprises a first positioning mechanism and a first pressing mechanism. The first positioning mechanism comprises a first positioning block fixed on the base and a T-shaped groove positioning block, and a fixed V-shaped block is arranged on the upper end of the first positioning block; The first pressing mechanism comprises a first support fixed on the base, a sliding V-shaped block slidably arranged on the upper end of the T-shaped groove positioning block, and a lead screw connecting the first support and the sliding V-shaped block; rotating the lead screw can drive the sliding V-shaped block to move towards the fixed V-shaped block, so as to clamp the bearing support to be processed, and realize automatic centering and positioning by using the bottom surface and the arc surface of the outer shape, so that the clamping force is directed along the radial direction to the center of the bearing support center hole.

[0011] Further improvement of the technical solution of the present application is that first copper pads are arranged on the clamping contact surfaces of the fixed V-shaped block and the sliding V-shaped block; the first copper pads are used to directly contact the bearing support to be processed during clamping, so as to avoid scratching the surface of the bearing support to be processed.

[0012] Further improvement of the technical solution of the present application is that the second procedure clamping station comprises a second positioning mechanism and a second pressing mechanism. The second positioning mechanism comprises a second positioning block fixed on the base, a second support arranged at one corner of the second positioning block, a hexagonal socket head screw mounted on the second support, and a first cylindrical pin arranged at the other corner of the second positioning block; the second positioning block is an integral structure, a rectangular groove is arranged in the middle of the second positioning block, and holes for tool setting are arranged on both sides of the rectangular groove; The second pressing mechanism comprises two first pressing plate mechanisms arranged on the front and back sides of the second positioning block respectively, each of the first pressing plate mechanisms comprises a fixed column fixed on the base and a pressing plate mounted thereon; The clamping station is configured to realize angular positioning of the bearing bracket to be machined by the two arc surfaces of the second positioning block, the hexagonal socket head screw and the first cylindrical pin, and to press the bearing bracket by the two first pressing plate mechanisms, so as to complete the machining of the subsequent holes and end faces based on the machined reference arc surface and bottom surface.

[0013] The further improvement of the technical scheme of the present application is that a second copper pad is arranged on the clamping contact surface of the pressing plate, which is used to protect the surface of the bearing bracket to be machined from being damaged during pressing.

[0014] The further improvement of the technical scheme of the present application is that the third process clamping station comprises a third positioning mechanism and a third pressing mechanism. The third positioning mechanism comprises a second cylindrical pin and four circular supports arranged symmetrically around the second cylindrical pin. The third pressing mechanism comprises two second pressing plate mechanisms, which are arranged symmetrically on the front and back sides of the circular supports and have the same structure as the first pressing plate mechanisms used in the second process clamping station. The clamping station is configured to realize positioning by the second cylindrical pin and the machined hole of the bearing bracket to be machined and to provide support by the circular supports, and finally to complete pressing by the second pressing plate mechanisms.

[0015] The further improvement of the technical scheme of the present application is that three arc-shaped notches are arranged circumferentially on the second cylindrical pin, which provide a space for loading and unloading the bearing bracket to be machined; the arrangement of the three arc-shaped notches ensures that the second cylindrical pin maintains a complete cylindrical guide surface in the X and Y directions required for machining, so as to facilitate the re-calibration of the center hole of the part by the dialing method, thereby ensuring the coaxial tolerance between the holes and the arc surface in different axial directions; in this station, the final finishing of the Φ74 arc surface to the finished size is completed, and the end faces are machined to the finished size.

[0016] ​Further improvement of the technical scheme of the present application is that a third copper pad is arranged on the clamping contact surface of the pressing plate of the second pressing plate mechanism, for protecting the surface of the bearing bracket to be machined from being damaged when being pressed.

[0017] Further improvement of the technical scheme of the present application is that a lifting ring is installed at both ends of the base for lifting and transporting the integrated fixture.

[0018] Thanks to the above technical scheme, the present application has the following technical progress: 1. The present application realizes integrated machining of multiple processes in one clamping by arranging multiple independent clamping stations corresponding to different machining processes of the bearing bracket, greatly improves the machining efficiency, reduces the transfer and repeated clamping time of the bearing bracket to be machined between different fixtures, ensures the consistency of positioning reference between processes through the coordinated layout of the unified base and each station, effectively controls the cumulative error and improves the machining precision, realizes fast and accurate positioning and clamping of the workpiece by using arc surface and hole as positioning reference and combining with special pressing mechanism, is suitable for batch production and has good versatility and stability.

[0019] 2. The present application specifically arranges the multiple stations as first, second and third process clamping stations, makes the functions of each station clear and the division of labor reasonable, realizes the orderly connection of processes, optimizes the machining process, makes the operations of each process not interfere with each other, improves the overall coordination of the production line, facilitates the design of special positioning and pressing structure for different processes, enhances the pertinence and reliability of the fixture, is suitable for step-by-step machining of complex parts and ensures the orderly advancement of machining content at each stage to improve product quality consistency.

[0020] 3. In the present application, the first process clamping station adopts the mode of fixed V-shaped block cooperating with sliding V-shaped block and screw rod transmission, drives the sliding V-shaped block through the screw rod to realize fast centering and clamping of the workpiece, is easy and labor-saving to operate, positions the bottom surface and arc surface of the bearing bracket to be machined, and the clamping force points to the center of the center hole along the radial direction, effectively avoids deformation of the bearing bracket to be machined and ensures the machining geometric accuracy, has compact structure and good rigidity, is suitable for rough machining and reference surface forming process and has stable and reliable positioning.

[0021] 4. The present application arranges first copper pads on the contact surface of the fixed V-shaped block and the sliding V-shaped block and second copper pads on the pressing plate contact surface; can effectively protect the surface of the bearing bracket to be machined from being scratched or damaged, the copper pads have certain softness, can absorb local stress during clamping to avoid damage of the bearing bracket to be machined caused by hard contact, improve product qualification rate and reduce surface defects caused by clamping, have simple structure, are easy to replace and maintain, and have good practicality and economy.

[0022] 5. In this invention, the second clamping station adopts an integrally formed second positioning block combined with angular positioning elements and pressure plate mechanism. The integral structure has high rigidity and high positioning accuracy, and can effectively resist vibration and cutting force during the processing. Angular positioning is achieved by two arc surfaces, hexagonal screws and cylindrical pins, which ensures the accurate position of the bearing bracket to be processed when processing the hole system and end face.

[0023] 6. In this invention, the clamping station of the third process adopts a combination of the second cylindrical pin and four circular supports for positioning. Combined with the symmetrically arranged second pressure plate mechanism, the cylindrical pin cooperates with the machined hole to achieve the main positioning. The support points are reasonably distributed, which improves the clamping stability of the bearing bracket to be processed. The symmetrical clamping method is conducive to the balance of the force system and prevents the bearing bracket to be processed from shifting or vibrating during processing.

[0024] 7. In this invention, the second cylindrical pin is designed with three arc notches in specific directions. The notch structure facilitates the quick loading and unloading of the bearing bracket to be processed, improving operational efficiency. The complete cylindrical surface is retained in the X and Y directions, which facilitates the calibration of the center hole with a dial indicator, ensuring the form and position tolerance of the coaxial structure in opposite directions. This ensures that the key dimensions and form and position requirements are met.

[0025] 8. In this invention, lifting rings are set at both ends of the base to facilitate the overall lifting and installation of the fixture, improve the efficiency of handling and installing the fixture in the workshop, and reduce the intensity of operation; facilitate the quick positioning and fixing of the fixture on the workbench of the machining center, and improve the speed of production preparation; enhance the practicality and ergonomics of the fixture, and are suitable for frequent scheduling of medium and large integrated fixtures. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a top view of an integrated clamp for a bearing bracket of an unmanned diesel outboard motor provided in an embodiment of the present invention; Figure 2 This is a two-dimensional schematic diagram of the assembly of an integrated fixture for a bearing bracket of an unmanned diesel outboard motor and a bearing bracket to be processed, provided in an embodiment of the present invention. Figure 3 This is a schematic diagram of the assembly of an integrated fixture for a bearing bracket of an unmanned diesel outboard motor and a bearing bracket to be processed, provided in an embodiment of the present invention. Figure 4 Three-dimensional model of the bearing bracket in this invention; Figure 5is a three-dimensional model of the bearing support in the application two; Wherein, 1, base; 2, first locating block; 3, T-shaped groove locating block; 4, first support; 5, screw rod; 6, sliding V-shaped block; 7, fixed V-shaped block; 8, first copper pad; 13, inner hexagonal cylindrical head screw; 14, first cylindrical pin; 15, second cylindrical pin; 16, round support; 17, hoisting ring. DETAILED DESCRIPTION

[0027] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification and claims of the present application and the above-mentioned drawings are intended to cover not exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0028] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0029] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "several" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0030] The present application will be further described in detail below in conjunction with the drawings and examples: As Figures 1-3 shown, a bearing support vertical integrated clamp for unmanned diesel outboard engine, comprising a base 1 and a plurality of independent clamping stations fixedly arranged on the base 1, each independent clamping station corresponds to a different machining process of the bearing support; each independent clamping station comprises a positioning mechanism and a pressing mechanism, the positioning mechanism uses the arc surface and hole of the bearing support to be machined as the positioning reference to realize accurate positioning of the bearing support to be machined; the pressing mechanism is used to press and fix the bearing support to be machined after positioning; by sequentially clamping the bearing support to be machined on each independent clamping station and cooperating with the corresponding tool for sequential machining, the entire machining content of the bearing support to be machined is completed.

[0031] Specifically, the bearing bracket to be machined is installed on the vertical integrated clamp, precise positioning is performed using the circular arc surface and hole of the bearing bracket to be machined, and rapid pressing is performed using the pressing mechanism. The thin-walled aluminum bearing bracket to be machined is processed in rough and fine sequences, the single processing amount is reduced, the processing deformation is small, and the coaxiality and other shape and position tolerances can be better ensured.

[0032] Further, as shown in Figures 1-3 , the plurality of independent clamping stations are specifically provided as at least three, which are respectively a first process clamping station A, a second process clamping station B and a third process clamping station C.

[0033] Further, as shown in Figures 1-2 , the first process clamping station A includes a first positioning mechanism and a first pressing mechanism; The first positioning mechanism includes a first positioning block 2 fixed on the base 1 and a T-shaped groove positioning block 3, and the first positioning block 2 is provided with a fixed V-shaped block 7 at the upper end; The first pressing mechanism includes a first support 4 fixed on the base 1, a sliding V-shaped block 6 slidably arranged at the upper end of the T-shaped groove positioning block 3, and a lead screw 5 connecting the first support 4 and the sliding V-shaped block 6; rotating the lead screw 5 can drive the sliding V-shaped block 6 to move towards the fixed V-shaped block 7, so as to clamp the bearing bracket to be machined, and realize automatic centering and positioning by using the bottom surface and the outer arc surface, so that the clamping force is directed along the radial direction to the center of the bearing bracket center hole.

[0034] Further, as shown in Figure 2 , the clamping contact surfaces of the fixed V-shaped block 7 and the sliding V-shaped block 6 are each provided with a first copper pad 8; the first copper pad 8 is used to directly contact the bearing bracket to be machined during clamping, so as to avoid scratching the surface thereof.

[0035] Specifically, the first process: adjust the sliding V-shaped block 6 using the lead screw 5, and use the bottom surface and the outer shape of the bearing bracket to be machined for positioning and clamping. Since the centers of the four tangent circles of the outer shape of the bearing bracket to be machined are concentric with the center hole, the fixed V-shaped block 7 and the sliding V-shaped block 6 are used for positioning and clamping, automatic centering, the clamping force is concentrated along the radial direction to the center, the bottom surface is more uniform in stress, and the stress is smaller relative to the simple vertical direction pressing the bottom surface with a thickness of only 3mm. In addition, the V-shaped block (fixed V-shaped block 7 and sliding V-shaped block 6) has better compatibility with the surface of the blank with different allowances, the first copper pad 8 on the fixed V-shaped block 7 and the sliding V-shaped block 6 can avoid scratching the part, the Φ74 arc surface is detected to the size , the arc surface is machined to the size , the end surfaces are roughly machined, and the size allowance is left.

[0036] Further, as shown in Figure 2 ​The second clamping station B includes a second positioning mechanism and a second pressing mechanism. The second positioning mechanism includes a second positioning block 9 fixed on the base 1, a second support 10 arranged at one corner of the second positioning block 9, a hexagonal socket head screw 13 installed on the second support 10, and a first cylindrical pin 14 arranged at another corner of the second positioning block 9. The second positioning block 9 is an integral structure, and a rectangular groove is arranged in the middle of the second positioning block 9. The two sides of the groove are provided with hole positions for tool setting during machining. The second pressing mechanism includes two first pressing plate mechanisms 11 arranged on the front and back sides of the second positioning block 9 respectively. Each first pressing plate mechanism 11 includes a fixed column fixed on the base 1 and a pressing plate installed on the fixed column. The clamping station is configured to realize angular positioning of the bearing bracket to be machined by the two arc surfaces of the second positioning block 9, the hexagonal socket head screw 13 and the first cylindrical pin 14, and to press the bearing bracket by the two first pressing plate mechanisms 11, so as to complete the machining of the subsequent holes and end faces based on the machined reference arc surface and bottom surface.

[0037] Further, as shown in Figure 2 , a second copper pad 12 is arranged on the clamping contact surface of the pressing plate, which is used to protect the surface of the bearing bracket to be machined from damage during pressing.

[0038] Specifically, the second process is as follows: the angular orientation is determined by the two arc surfaces of the second positioning block 9 with a size of , the hexagonal socket head screw 13 and the first cylindrical pin 14. The bearing bracket to be machined is pressed by the two pressing plates, and is machined in cooperation with the machined arc surface and bottom surface of the bearing bracket to be machined. The holes Φ7, Φ16 and Φ30 and the threaded holes M5-6H are machined to the finished product size. The coarse and fine holes are sequentially machined to the sizes of , , , , respectively. The end faces are machined with a size allowance.

[0039] Further, the third clamping station C includes a third positioning mechanism and a third pressing mechanism. The third positioning mechanism includes a second cylindrical pin 15 and four circular supports 16 symmetrically arranged around the second cylindrical pin 15. The third pressing mechanism includes two second pressing plate mechanisms, which are identical in structure to the first pressing plate mechanisms 11 used in the second clamping station B and are symmetrically arranged on the front and back sides of the circular supports 16. The clamping station is configured to realize positioning by cooperation of the second cylindrical pin 15 with the machined holes of the bearing bracket to be machined, and to provide support by the circular supports 16, and finally to complete pressing by the second pressing plate mechanisms. Further, as shown in

[0040] , Figure 1and Figure 2 As shown, the second cylindrical pin 15 has three arc-shaped notches in its circumference. This structure provides clearance for loading and unloading the bearing bracket to be processed. The orientation of the three arc-shaped notches ensures that the second cylindrical pin 15 remains a complete cylindrical guide surface in the X and Y directions required for processing. This facilitates the recalibration of the center hole of the part by dial indicator, thereby ensuring the coaxiality and form and position tolerance between the hole and the arc surface in different axes. At this station, the Φ74 arc surface is finally finished to the finished size by precision milling. The surface is rounded, and each end face is machined to the finished size.

[0041] Furthermore, such as Figure 2 As shown, the clamping contact surface of the pressure plate of the second pressure plate mechanism is provided with a third copper pad, which is used to protect the surface of the bearing bracket to be processed from damage during clamping.

[0042] Specifically, the third step: utilizing The second cylindrical pin 15 and four circular supports 16, along with the pressure plate positioning and clamping, are used in conjunction with the pre-machined bearing bracket to be processed. Hole fit. The second cylindrical pin 15 has three arc notches for easy loading and unloading of parts. These three notches are not located in the X or Y directions, ensuring that both directions are complete arcs. This facilitates manual calibration of the center hole of the bearing bracket under machining, better guaranteeing the coaxiality and form tolerance requirements of the coaxial holes and arc surfaces. Furthermore, a larger circular support 16 is used, providing stronger support and better vibration resistance during machining. The Φ74 arc surface is inspected to the finished size and then precision milled. For the arc surface, machine each end face to the finished size.

[0043] Furthermore, such as Figure 1 , Figure 2 As shown, lifting rings 17 are installed at both ends of the base 1 for lifting the integrated fixture. Several fixing bolts are also provided on the base 1. This facilitates the overall lifting and installation of the fixture, improving the efficiency of handling and installing the fixture in the workshop and reducing operational intensity; it also facilitates the rapid positioning and fixing of the fixture on the machining center workbench, increasing production preparation speed; and it enhances the practicality and ergonomics of the fixture, making it suitable for frequent scheduling of medium and large integrated fixtures.

[0044] In summary, the bearing bracket vertical integrated fixture for unmanned diesel outboard motors proposed in this invention improves machining accuracy compared with traditional methods, ensures the coaxiality and form and position tolerance requirements of coaxial holes and arc surfaces, and reduces the machining flow distance and machining preparation time, thereby improving machining efficiency.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A bearing bracket stand-up integrated jig for unmanned diesel outboard engine, characterized by: The application relates to a bearing support machining device, which comprises a base (1) and a plurality of independent clamping stations fixed on the base (1), each of the independent clamping stations corresponding to different machining procedures of a bearing support; each of the independent clamping stations comprises a positioning mechanism and a pressing mechanism, the positioning mechanism taking a circular arc surface and a hole of a bearing support to be machined as positioning references to realize accurate positioning of the bearing support to be machined; the pressing mechanism is used for pressing and fixing the bearing support to be machined after positioning; the whole machining content of the bearing support to be machined is completed through sequentially clamping the bearing support to be machined on each of the independent clamping stations and cooperating with corresponding cutters for sequential machining.

2. The integrated jig for bearing support stand of unmanned diesel outboard engine according to claim 1, characterized in that: The plurality of independent clamping stations are specifically provided as at least three, namely a first procedure clamping station (A), a second procedure clamping station (B) and a third procedure clamping station (C).

3. The integrated jig for bearing support stand of unmanned diesel outboard engine according to claim 2, characterized in that: The first procedure clamping station (A) comprises a first positioning mechanism and a first pressing mechanism; The first positioning mechanism comprises a first positioning block (2) fixed on the base (1) and a T-shaped groove positioning block (3), and a fixed V-shaped block (7) is arranged on the upper end of the first positioning block (2); The first pressing mechanism comprises a first support (4) fixed on the base (1), a sliding V-shaped block (6) slidably arranged on the upper end of the T-shaped groove positioning block (3) and a lead screw (5) connecting the first support (4) and the sliding V-shaped block (6); rotating the lead screw (5) can drive the sliding V-shaped block (6) to move towards the fixed V-shaped block (7) to cooperatively clamp the bearing support to be machined, and the bottom surface and the outer arc surface of the bearing support to be machined are used for realizing automatic centering and positioning, so that the clamping force is directed along the radial direction to the center of the bearing support center hole.

4. The integrated jig for bearing support stand of unmanned diesel outboard engine according to claim 3, characterized in that: First copper pads (8) are arranged on the clamping contact surfaces of the fixed V-shaped block (7) and the sliding V-shaped block (6); the first copper pads (8) are used for directly contacting the bearing support to be machined during clamping to avoid the surface of the bearing support to be machined from being clamped.

5. The integrated jig for bearing support stand of unmanned diesel outboard engine according to claim 2, characterized in that: The second procedure clamping station (B) comprises a second positioning mechanism and a second pressing mechanism; The second positioning mechanism comprises a second positioning block (9) fixed on the base (1), a second support (10) arranged at one corner of the second positioning block (9), an inner hexagonal cylindrical head screw (13) mounted on the second support (10) and a first cylindrical pin (14) arranged at the other corner of the second positioning block (9); the second positioning block (9) is an integral structure, the middle part of the second positioning block (9) is provided with a rectangular groove, and the two sides of the groove are provided with hole positions for letting off tools during machining; The second pressing mechanism comprises two first pressing plate mechanisms (11) arranged on the front and back sides of the second positioning block (9) respectively, and each of the first pressing plate mechanisms (11) comprises a fixed column fixed on the base (1) and a pressing plate mounted on the fixed column. The clamping station is configured to realize angular positioning of the bearing bracket to be machined by the two circular arc surfaces of the second positioning block (9), the inner hexagonal cylindrical head screw (13) and the first cylindrical pin (14), and to press the bearing bracket by the two first pressing plate mechanisms (11) to complete the machining of the subsequent holes and end faces based on the machined reference circular arc surface and bottom surface.

6. The integrated jig for bearing support stand of unmanned diesel outboard engine according to claim 5, characterized in that: A second copper pad (12) is arranged on the clamping contact surface of the pressing plate to protect the surface of the bearing bracket to be machined from damage when being pressed.

7. The integrated stand clamp for a shaft bearing support of an unmanned diesel outboard engine according to claim 2, characterized in that: The third process clamping station (C) comprises a third positioning mechanism and a third pressing mechanism; The third positioning mechanism comprises a second cylindrical pin (15) and four circular supports (16) symmetrically arranged around the second cylindrical pin (15); The third pressing mechanism comprises two second pressing plate mechanisms which are identical in structure to the first pressing plate mechanism (11) of the second process clamping station (B) and are symmetrically arranged on the front and back sides of the circular supports (16); The clamping station is configured to: through the second cylindrical pin (15) and the machined hole of the bearing support to be machined Cooperation realizes positioning, and support is provided by the round support (16), and finally compression is completed by the second pressing plate mechanism.

8. The integrated jig for bearing support stand of unmanned diesel outboard engine according to claim 7, characterized in that: The circumferences of the second cylindrical pin (15) are provided with three circular-arc-shaped notches, which provide space for loading and unloading the bearing support to be machined; the azimuthal arrangement of the three circular-arc-shaped notches ensures that the second cylindrical pin (15) maintains a complete cylindrical guiding surface in the X and Y directions required for machining, so as to facilitate the re-calibration of the center hole of the part by means of a dial gauge, thereby ensuring the coaxial tolerance between the holes in different axial directions and the circular-arc surface; in this station, the final finishing of the Φ74 circular-arc surface to the finished product size is completed, and the end surfaces are precisely milled to the finished product size. circular-arc surface, and the end surfaces are machined to the finished product size.

9. The integrated jig for bearing support stand of unmanned diesel outboard engine according to claim 7, characterized in that: A third copper pad is arranged on the clamping contact surface of the pressing plate of the second pressing plate mechanism to protect the surface of the bearing bracket to be machined from damage when being pressed.

10. The integrated jig for bearing support stand of unmanned diesel outboard engine according to claim 1, characterized in that: Lifting rings (17) are mounted on both ends of the base (1) for lifting and transporting the integrated clamp.

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