Positioning tool for processing wheel forgings

Abstract

The utility model discloses a positioning tool for wheel forge piece machining, including base, the surface fixedly connected with placing table of base, be provided with positioning mechanism in the inside of base, the positioning mechanism includes first gear, second gear, stand, cross column and hollow column, first gear set up in the below of placing table, the lateral wall of first gear is engaged with second gear, the utility model relates to wheel forge piece machining technical field, this positioning tool for wheel forge piece machining passes through the cooperation between first gear, second gear, stand, cross column and hollow column, realized can to the wheel forge piece of different diameter positioning, solved because the diameter size of support frame is fixed, leads to its only can adapt to the mine car wheel hub of specific specification, if need to compare the wheel forge piece of support frame diameter big positioning, the bottom of wheel forge piece can not stably place on support frame, thereby reduced the use effect of positioning tool.

Description

Technical Field

[0001] This utility model relates to the field of wheel forging processing technology, specifically to positioning fixtures for wheel forging processing. Background Technology

[0002] Wheel forgings are made of alloy steel and manufactured through free forging. They have better mechanical properties than castings and are widely used in cranes, mining machinery and automobiles. For example, when machining mining car wheel forgings, positioning fixtures are needed to position them.

[0003] For example, a positioning fixture for processing mine car wheel hubs, with authorization announcement number CN219665870U, includes a base, characterized in that it also includes a support frame installed on the base and several positioning parts installed on the base and located outside the support frame; although the above description can realize the installation of mine car wheel hubs on the support frame, and then limit and fix the wheel hubs through the positioning parts, thereby installing the wheel hubs on the base, facilitating subsequent processing operations and improving wheel hub processing efficiency; However, when workers place the wheel on the support frame to position it, the fixed diameter of the support frame means it can only fit specific sizes of mining wheel hubs. If a wheel forging with a larger diameter than the support frame is needed for positioning, the bottom of the wheel forging cannot be stably placed on the support frame and can only contact the support frame with its edge, causing a slight shift in the center of gravity of the wheel forging, thus reducing the effectiveness of the positioning tooling. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a positioning fixture for processing wheel forgings. It solves the problem that because the diameter of the support frame is fixed, it can only be used to fit specific specifications of mining wheel hubs. When positioning wheel forgings with a larger diameter than the support frame is required, the bottom of the wheel forging cannot be stably placed on the support frame, thus reducing the effectiveness of the positioning fixture.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a positioning fixture for wheel forging processing, comprising a base, a placement platform fixedly connected to the surface of the base, and a positioning mechanism disposed inside the base; the positioning mechanism comprises a first gear, a second gear, a column, a horizontal column, and a hollow column; the first gear is disposed below the placement platform, the side wall of the first gear is meshed with the second gear, the inner wall of the second gear is fixedly connected to the column, both ends of the column are rotatably connected to the inner wall of the base via bearings, the upper part of the outer wall of the column is fixedly connected to the horizontal column, and one side of the top of the horizontal column is fixedly connected to the hollow column, which extends through an opening to the outer wall of the base and is movably connected to the base.

[0006] Preferably, a motor is fixedly connected to the bottom of the inner wall of the base by bolts, and the output end of the motor is fixedly connected to the inner wall of the first gear.

[0007] Preferably, the hollow column has an upright sleeve fitted on its inner wall, the hollow column is fixed to the outer wall of the upright by bolts, and the top of the upright is fixed with a stud.

[0008] Preferably, a pressure post extends through the outer wall of the stud, and a nut is threaded onto the upper part of the outer wall of the stud, with the bottom of the nut fitting against the outer wall of the pressure post.

[0009] Preferably, the first gear is provided with a limiting structure on its exterior; the limiting structure includes a screw, a knob, a crank, a connecting column, and a rack; the screw is rotatably connected to the inner wall of the base via a bearing, the beginning end of the screw is fixedly connected to a knob, the outer wall of the screw is threadedly connected to a connecting column, the end of the connecting column is fixedly connected to a rack, the inner wall of the base is fixedly connected to a crank on the side near the screw, the screw passes through the crank and is movably connected to the crank.

[0010] Preferably, the side wall of the base is fixedly connected with a connecting ear, and the surface of the connecting ear is provided with a mounting hole. Beneficial effects

[0011] This utility model provides a positioning fixture for machining wheel forgings. It has the following advantages: This positioning fixture for machining wheel forgings, through the cooperation of a first gear, a second gear, a column, a horizontal column, and a hollow column, enables the positioning of wheel forgings of different diameters. It solves the problem that because the diameter of the support frame is fixed, it can only be used with specific specifications of mining wheel hubs. Furthermore, when positioning wheel forgings with a diameter larger than the support frame, the bottom of the wheel forging cannot be stably placed on the support frame, thus reducing the effectiveness of the positioning fixture.

[0012] By coordinating the screw, knob, crank, connecting column, and rack, the first gear is limited during operation, preventing it from rotating when the motor is damaged. This solves the problem of the first gear and other transmission components unexpectedly rotating due to processing vibration or workpiece inertia caused by the loss of power or damage to the positioning mechanism due to motor failure or damage. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 An exterior schematic diagram; Figure 3 for Figure 1 A schematic diagram of the structure of the central motor, the first gear, and the second gear; Figure 4 for Figure 1 Schematic diagram of the stud, nut and clamping stud; Figure 5 for Figure 3 Enlarged view of point A in the middle.

[0014] In the diagram: 1. Base; 2. Placement platform; 3. Connecting ear; 4. Mounting hole; 5. Motor; 6. First gear; 7. Second gear; 8. Column; 9. Horizontal column; 10. Hollow column; 11. Upright pole; 12. Stud; 13. Nut; 14. Pressure column; 15. Screw; 16. Knob; 17. Curved column; 18. Connecting column; 19. Rack. Detailed Implementation

[0015] 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.

[0016] Because the diameter of the support frame is fixed, it can only be used to fit specific sizes of mine car wheel hubs. If a wheel forging with a larger diameter than the support frame is needed for positioning, the bottom of the wheel forging cannot be stably placed on the support frame, thus reducing the effectiveness of the positioning fixture.

[0017] In view of this, the present invention provides a positioning fixture for processing wheel forgings. This positioning fixture, through the cooperation between the first gear, the second gear, the column, the horizontal column, and the hollow column, enables the positioning of wheel forgings of different diameters. It solves the problem that because the diameter of the support frame is fixed, it can only be adapted to specific specifications of mining wheel hubs. When it is necessary to position wheel forgings with a larger diameter than the support frame, the bottom of the wheel forging cannot be stably placed on the support frame, thus reducing the effectiveness of the positioning fixture.

[0018] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly introduced below.

[0019] Example 1, by Figure 1-5It is known that the positioning fixture for processing wheel forgings in this case includes a base 1, a placement platform 2 is fixedly connected to the surface of the base 1, and a positioning mechanism is provided inside the base 1; the positioning mechanism includes a first gear 6, a second gear 7, a column 8, a horizontal column 9 and a hollow column 10; the first gear 6 is located below the placement platform 2, the side wall of the first gear 6 is meshed with the second gear 7, the inner wall of the second gear 7 is fixedly connected with the column 8, both ends of the column 8 are rotatably connected to the inner wall of the base 1 through bearings, the upper part of the outer wall of the column 8 is fixedly connected with the horizontal column 9, the top side of the horizontal column 9 is fixedly connected with the hollow column 10, the hollow column 10 extends to the outer wall of the base 1 through an opening and is movably connected to the base 1; In the specific implementation process, it is worth noting that the base 1, as the basic support component of the entire tooling, must have sufficient strength and rigidity. The material is generally cast iron or steel (such as Q235), which is formed by casting or forging to ensure the stable operation of the subsequent positioning mechanism. When positioning the wheel forging, the worker first places the wheel forging on the placement platform 2 to support it. Then, the first gear 6 rotates, which drives the second gear 7 to rotate. The second gear 7 drives the column 8 to rotate, and the column 8 drives the horizontal column 9 to rotate. The horizontal column 9 moves in the base 1 and is limited. The horizontal column 9 then drives the hollow column 10 to rotate. The surface of the hollow column 10 is anodized for corrosion protection, so that the three hollow columns 10 contact the outer wall of the wheel forging to position it. After positioning, the first gear 6 stops rotating. After that, the wheel forging is processed. After processing, the first gear 6 rotates in the opposite direction, so that the three hollow columns 10 move away from the wheel forging and can be removed. This allows for the positioning of wheel forgings of different diameters. Furthermore, a motor 5 is fixedly connected to the bottom of the inner wall of the base 1 by bolts, and the output end of the motor 5 is fixedly connected to the inner wall of the first gear 6. In the specific implementation process, it is worth noting that the motor 5 is a servo motor of model 110ST-M04030. The connection between the motor 5 and the external controller adopts a differential signal connection method. Specifically, the encoder signal lines (A+, A-, B+, B-, Z+, Z-) of the motor 5 are connected to the encoder interface of the controller through shielded twisted pair cables to realize real-time feedback of the motor 5's speed and position. The power lines (U, V, W three-phase lines) of the motor 5 are connected to the power output terminal of the controller after passing through an air switch and a contactor to provide drive power. At the same time, the brake control lines (BK+, BK-) of the motor 5 are connected to the relay output terminal of the controller to control the engagement and release of the brake of the motor 5. All connection harnesses use cables with metal shielding layers, and the shielding layer is grounded at one end to reduce the impact of electromagnetic interference in the processing environment on signal transmission, ensuring stable communication between the motor 5 and the controller and timely response to control commands. Among them, heat dissipation holes and wiring holes can be opened on the outer wall of the base 1. The heat dissipation holes dissipate heat from the motor 5, and the wiring holes connect the motor 5. When positioning the wheel forging, the operator starts the motor 5 through the controller, which drives the first gear 6 to rotate. After positioning is completed, the controller stops the motor 5 from rotating. After processing is completed, the controller controls the motor 5 to rotate in the opposite direction, which causes the first gear 6 to rotate in the opposite direction and contact the positioning of the wheel forging, thus realizing the rotation of the first gear 6 driven by the motor 5. Furthermore, the inner wall of the hollow column 10 is fitted with a vertical rod 11, and the hollow column 10 is fixed to the outer wall of the vertical rod 11 by bolts. The top of the vertical rod 11 is fixed with a stud 12. In the specific implementation process, it is worth noting that the surface of the upright 11 has several threaded holes for material discharge at equal intervals. When fixing wheel forgings of different heights, the workers rotate the bolts on the hollow column 10 in sequence, thereby rotating the bolts out of the threaded holes on the surface of the upright 11 and releasing the upright 11 from the fixation. After that, the workers move the upright 11, which drives the stud 12 to move. After the movement is completed, the workers rotate the bolts again, thereby rotating the bolts into the corresponding threaded holes on the surface of the upright 11 and fixing the upright 11, so as to adjust the height position of the stud 12. Furthermore, a pressure post 14 penetrates the outer wall of the stud 12, and a nut 13 is threadedly connected to the upper part of the outer wall of the stud 12, with the bottom of the nut 13 fitting against the outer wall of the pressure post 14. In the specific implementation process, it is worth noting that the nut 13 is a high-strength nut (such as grade 8.8), and a rubber pad can be set at the contact position between the pressure column 14 and the wheel forging to prevent damage to the surface of the wheel forging. After the wheel forging is positioned, the hollow column 10 drives the upright 11 and the stud 12 to move to a position close to the wheel forging. The worker inserts the pressure column 14 into the stud 12 and makes the end of the pressure column 14 contact the wheel forging. After that, the worker rotates the nut 13 onto the stud 12 and makes the nut 13 press against the pressure column 14 to fix the positioned wheel forging. After processing is completed, the worker rotates the nut 13 in the opposite direction to make the nut 13 leave the pressure column 14 and the stud 12, and then removes the pressure column 14 from the stud 12 to release the wheel forging from the fixation, thus achieving the fixation of the wheel forging. Furthermore, the first gear 6 is provided with a limiting structure on its exterior; the limiting structure includes a screw 15, a knob 16, a crank 17, a connecting column 18, and a rack 19; the screw 15 is rotatably connected to the inner wall of the base 1 via a bearing, the knob 16 is fixedly connected to the beginning end of the screw 15, the connecting column 18 is threadedly connected to the outer wall of the screw 15, the rack 19 is fixedly connected to the end of the connecting column 18, the crank 17 is fixedly connected to the inner wall of the base 1 on the side near the screw 15, the screw 15 passes through the crank 17 and is movably connected to the crank 17; In the specific implementation process, it is worth noting that after the wheel forging is positioned, the operator rotates the knob 16, which drives the screw 15 to rotate. The screw 15 then moves the connecting column 18, which moves within the crank column 17, thus limiting the connection column 18. The connecting column 18 then drives the rack 19 to move, causing the rack 19 to mesh with the first gear 6. After this is completed, the operator stops rotating the knob 16. When it is necessary to release the positioning, the operator rotates the knob 16 in the opposite direction, causing the rack 19 to leave the outer wall of the first gear 6, thereby limiting the first gear 6 during operation and preventing the first gear 6 from rotating if the motor 5 is damaged.

[0020] Example 2, by Figure 1 and 2 It can be seen that the side wall of the base 1 is fixedly connected with a connecting ear 3, and the surface of the connecting ear 3 is provided with a mounting hole 4; In the specific implementation process, it is worth noting that the mounting hole 4 is a circular through hole. The staff moves the base 1 to place the base 1 on the working platform of the external processing equipment. After that, the staff fixes the base 1 to the working platform of the processing equipment through the mounting hole 4 on the connecting ear 3, thus realizing the installation of the base 1.

[0021] 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 claims and their equivalents.

Claims

1. A positioning fixture for machining wheel forgings, comprising a base (1), characterized in that: The base (1) is fixedly connected to a placement platform (2), and the base (1) is provided with a positioning mechanism inside; The positioning mechanism includes a first gear (6), a second gear (7), a column (8), a horizontal column (9), and a hollow column (10). The first gear (6) is located below the placement platform (2). The side wall of the first gear (6) is meshed with a second gear (7). The inner wall of the second gear (7) is fixedly connected with a column (8). Both ends of the column (8) are rotatably connected to the inner wall of the base (1) through bearings. A horizontal column (9) is fixedly connected to the upper part of the outer wall of the column (8). A hollow column (10) is fixedly connected to one side of the top of the horizontal column (9). The hollow column (10) extends to the outer wall of the base (1) through an opening and is movably connected to the base (1).

2. The positioning fixture for machining wheel forgings according to claim 1, characterized in that: The bottom of the inner wall of the base (1) is fixedly connected to a motor (5) by bolts, and the output end of the motor (5) is fixedly connected to the inner wall of the first gear (6).

3. The positioning fixture for machining wheel forgings according to claim 1, characterized in that: The hollow column (10) has a vertical rod (11) sleeved on its inner wall. The hollow column (10) is fixed to the outer wall of the vertical rod (11) by bolts. The top of the vertical rod (11) is fixed with a stud (12).

4. The positioning fixture for machining wheel forgings according to claim 3, characterized in that: The outer wall of the stud (12) is penetrated by a pressure post (14), and a nut (13) is threadedly connected to the upper part of the outer wall of the stud (12), with the bottom of the nut (13) fitting against the outer wall of the pressure post (14).

5. The positioning fixture for machining wheel forgings according to claim 1, characterized in that: The first gear (6) is provided with a limit structure on its exterior; The limiting structure includes a screw (15), a knob (16), a crank (17), a connecting column (18), and a rack (19). The screw (15) is rotatably connected to the inner wall of the base (1) via a bearing. A knob (16) is fixedly connected to the beginning of the screw (15). A connecting post (18) is threadedly connected to the outer wall of the screw (15). A rack (19) is fixedly connected to the end of the connecting post (18). A curved post (17) is fixedly connected to the inner wall of the base (1) on the side near the screw (15). The screw (15) passes through the curved post (17) and is movably connected to the curved post (17).

6. The positioning fixture for machining wheel forgings according to claim 1, characterized in that: The base (1) is fixedly connected to a connecting ear (3), and the surface of the connecting ear (3) is provided with a mounting hole (4).

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