A drilling apparatus for wheel bolt holes

Abstract

The utility model discloses a kind of drilling equipment of wheel hub bolt hole, belong to drilling equipment technical field, the equipment includes base, slide column, fixed plate, drilling part and bottom plate, still include setting in the positioning assembly and clamping assembly of the bottom plate inside, the positioning assembly includes retraction, C block, sliding rod and positioning plate;The output end of the retraction is butted with the C block, the C block sliding cooperation is in the slide wall of the sliding rod, the outside of the sliding rod is fixedly connected with the positioning plate, the clamping assembly includes motor, running disc, multistage piece, long rod, fixed block and clamping plate, the output shaft of the motor is rotatably connected with the running disc.The utility model realizes accurate centering by positioning assembly, realizes stable clamping by clamping assembly, cooperatively solves the problem that wheel hub positioning precision is low and clamping is unstable, improves drilling precision and the stability of batch production.

Description

Technical Field

[0001] This utility model relates to the field of drilling equipment technology, and in particular to a drilling equipment for wheel hub bolt holes. Background Technology

[0002] The wheel hub is a cylindrical metal component that supports the tire and is centrally mounted on the axle. It is a crucial safety component connecting the wheel and the axle. During wheel hub manufacturing, bolt holes for mounting and securing the wheel must be precisely machined. The positional accuracy and coaxiality of these bolt holes require extremely high precision, directly affecting the vehicle's driving safety and stability.

[0003] Currently, drilling bolt holes in wheel hubs is typically done using a drilling machine in conjunction with specialized tooling fixtures. The machining quality of the workpiece largely depends on the positioning and clamping performance of the tooling fixtures.

[0004] In existing technologies, many drilling equipment fixtures rely on manual alignment or simple mechanical limit blocks for positioning wheel hubs. Manual alignment is inefficient, and its positioning accuracy is greatly affected by the operator's skill level, making it difficult to guarantee consistency in mass production. Simple mechanical limit blocks are difficult to achieve high-precision automatic alignment when dealing with wheel hubs from different batches with minor manufacturing tolerances, resulting in low repeatability.

[0005] Furthermore, traditional clamping mechanisms often have certain shortcomings in the clamping process after positioning. When adapting to hubs of different diameters or shapes, these mechanisms are poorly adaptable and struggle to provide uniform and stable clamping force. During drilling, the drill bit applies significant cutting force and torque to the hub. If the clamping is unstable or the force is uneven, it can easily cause minute vibrations or displacements in the hub during processing. This can severely compromise the accuracy of the hole position and affect product quality.

[0006] Therefore, this utility model proposes a drilling device for wheel hub bolt holes to overcome the shortcomings of the prior art. Utility Model Content

[0007] To overcome the above deficiencies, this utility model provides a drilling device for wheel hub bolt holes, which aims to improve the problems of low repeatability and insufficient clamping stability in wheel hub drilling in the prior art.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a drilling device for wheel hub bolt holes, comprising: a base, a sliding column vertically fixedly connected to the top and bottom of the base, a fixed plate slidably connected to the sliding column, a drilling component fixedly installed in the middle of the fixed plate, a chassis provided on the top of the base and below the drilling component; and a positioning component and a clamping component disposed inside the chassis.

[0009] The positioning assembly includes a shrinkable component, a C-block, a sliding rod, and a positioning plate. The output end of the shrinkable component abuts against the C-block, the C-block is slidably fitted onto the sliding wall of the sliding rod, the outer side of the sliding rod is fixedly connected to the positioning plate, and the positioning plate is slidably connected within a groove in the chassis.

[0010] The clamping assembly includes a motor, a running disk, a multi-segment component, a long rod, a fixing block, and a clamping plate. The output shaft of the motor is rotatably connected to the running disk, one end of the multi-segment component is eccentrically rotatably connected to the running disk, the other end of the multi-segment component is rotatably connected to the long rod, the long rod is fixedly connected to the fixing block, and the fixing block is fixedly connected to the clamping plate.

[0011] Preferably, the drilling device for wheel hub bolt holes further includes a pressing component, which is disposed on one side of the base and linked to the fixing plate to drive the fixing plate to move up and down along the sliding column.

[0012] Preferably, the drilling equipment for wheel hub bolt holes further includes an operating table, which is fixedly connected to one side of the base.

[0013] Preferably, the retractable component is a telescopic cylinder or an electric push rod.

[0014] Preferably, the C-block has an inclined guide surface, and the sliding wall of the sliding rod cooperates with the inclined guide surface to compress the sliding rod and generate movement when the C-block moves.

[0015] Preferably, the multi-segment component includes two long strips and a transfer component rotatably connected between the two long strips.

[0016] Preferably, the clamping assembly includes a plurality of radially distributed long rods, the fixing block, and the clamping plate, and includes a plurality of multi-segment components corresponding to the plurality of long rods respectively.

[0017] Preferably, the surface of the running disk is provided with an annular groove, and the plurality of multi-segment components are movably connected to the annular groove through one end of each component, so as to synchronously drive the plurality of long rods through the rotation of the running disk.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model solves the problems of poor centering effect and low repeatability in the positioning of wheel hubs in the prior art, which leads to dimensional deviations in mass production. It utilizes the linear movement of the shrinking component to convert the wedge linkage structure into synchronous radial movement of the positioning plate.

[0020] 2. This utility model, by setting up a clamping assembly consisting of a motor, a running disc, multi-segment components, and a clamping plate, utilizes a motor to drive the running disc to rotate. Through a special multi-segment linkage mechanism, the rotational motion is converted into a synchronous horizontal clamping action of the clamping plate. This solves the problem in the prior art where the clamping mechanism has uneven clamping force and insufficient stability for wheel hubs of different sizes, which easily leads to vibration or displacement during drilling, affecting the accuracy and safety of the hole position. It achieves stable and uniform clamping for wheel hubs of different sizes, significantly improving the stability and safety of the drilling process and ensuring the accuracy of the hole position. Attached Figure Description

[0021] Figure 1 A perspective view of a drilling device for wheel hub bolt holes proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the chassis structure of a drilling device for wheel hub bolt holes proposed in this utility model;

[0023] Figure 3 This is a schematic diagram of the clamping assembly structure of a drilling device for wheel hub bolt holes proposed in this utility model;

[0024] Figure 4 This is a schematic diagram of the positioning component structure of a drilling device for wheel hub bolt holes proposed in this utility model.

[0025] Legend:

[0026] 1. Base; 2. Operating table; 3. Pressing component; 4. Fixing plate; 5. Drilling component; 6. Sliding column; 7. Chassis; 8. Clamping assembly; 801. Long rod; 802. Running plate; 803. Fixing block; 804. Clamping plate; 805. Multi-section component; 806. Motor; 9. Positioning assembly; 901. Retractable component; 902. C-block; 903. Sliding rod; 904. Positioning plate. Detailed Implementation

[0027] 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.

[0028] Reference Figure 1 - Figure 4 This utility model provides an embodiment of a drilling device for wheel hub bolt holes, including a base 1, which serves as the installation base platform for the entire device. The bottom end of a sliding column 6 is vertically installed on the top of the base 1 by a fixed connection. A fixing plate 4 is slidably connected to the sliding column 6, allowing the fixing plate 4 to move up and down along the axial direction of the sliding column 6. A drilling component 5 is fixedly installed in the middle of the fixing plate 4 for drilling workpieces. An operating table 2 is fixedly connected to one side of the base 1. A pressing component 3 is disposed on one side of the base 1, and the pressing component 3 and the fixing plate 4 form a linkage connection to drive the fixing plate 4 to carry the drilling component 5 to complete the lifting action.

[0029] At the top of the base 1, a chassis 7 is fixedly installed directly below the drilling component 5. The chassis 7 is used to support the wheel hub to be processed, namely the positioning component 9 and the clamping component 8, which are both integrated inside the chassis 7. Specifically, the function of the positioning component 9 is to automatically calibrate and center the wheel hub placed on the chassis 7 before drilling, so as to accurately calibrate the center of the wheel hub and provide a precise position reference for subsequent clamping and drilling.

[0030] The function of clamping assembly 8 is to perform a clamping action after the hub has been precisely aligned by positioning assembly 9, firmly fixing the hub to the chassis 7 to prevent any displacement or vibration of the hub during drilling, thereby ensuring the accuracy of the hole position and the safety of the machining process. Positioning assembly 9 includes a retractable member 901, a C-block 902, a sliding rod 903, and a positioning plate 904. The retractable member 901 can be a telescopic cylinder or an electric push rod. The output end of the retractable member 901 abuts against the C-block 902. When the rod of the retractable member 901 extends, it drives the C-block 902 to move. The C-block 902 has an inclined guide surface. The sliding rod 903 is provided with a guide surface that... The inclined guide surface is matched with the sliding wall. The C-shaped block 902 is connected to the sliding wall of the sliding rod 903 through a sliding fit. The linear movement of the C-shaped block 902 driven by the shrinking member 901 can be converted into the radial movement of the sliding rod 903 by squeezing the sliding wall. The outer side of the sliding rod 903 is connected to the positioning plate 904 through a fixed connection. The positioning plate 904 is installed in the preset sliding groove of the chassis 7 through a sliding connection. When the sliding rod 903 moves radially, it drives the positioning plate 904 to move in the sliding groove, thereby squeezing the outer edge or inner hole of the wheel hub placed on the chassis 7 to achieve position correction.

[0031] The positioning component 9 includes multiple sets of C-shaped blocks 902, sliding rods 903 and positioning plates 904 arranged in a ring array. These structures are driven by the same retracting member 901 or by multiple retracting members 901 that move synchronously, thereby ensuring that multiple positioning plates 904 can move synchronously toward or away from the center of the wheel hub, achieving fast and accurate automatic centering of the wheel hub.

[0032] The clamping assembly 8 includes a motor 806, a running disk 802, a multi-section component 805, a long rod 801, a fixing block 803, and a clamping plate 804. The output shaft of the motor 806 is connected to the running disk 802 by a rotatable connection, providing a power source for the entire clamping assembly 8.

[0033] The multi-segment component 805 is a key component for realizing the conversion of motion mode. The multi-segment component 805 includes two long strips and a transfer component rotatably connected between the two long strips, forming a linkage mechanism. One end of the multi-segment component 805 is eccentrically connected to the running disk 802 by a rotatable connection, and the other end of the multi-segment component 805 is connected to the long rod 801 by a rotatable connection, so that the rotational motion generated by the running disk 802 under the drive of the motor 806 can be efficiently converted into the horizontal linear reciprocating motion of the long rod 801.

[0034] The end of the long rod 801 is fixedly connected to the fixing block 803, and the fixing block 803 is fixedly connected to the clamping plate 804. Therefore, when the long rod 801 moves horizontally, it can directly drive the clamping plate 804 to clamp the hub inward or loosen it outward. In order to achieve uniform and stable clamping of the hub in the circumference, the clamping assembly 8 includes multiple radially distributed long rods 801, fixing blocks 803 and clamping plates 804, and is provided with multiple multi-segment pieces 805 respectively connected to these long rods 801.

[0035] An annular groove can be machined on the surface of the running disk 802. Multiple multi-segment components 805 are movably connected to this annular groove through one end of each component. When the motor 806 drives the running disk 802 to rotate, all the multi-segment components 805 connected to the annular groove can be driven synchronously, thereby driving all the clamping plates 804 to perform clamping or loosening actions simultaneously and synchronously, ensuring the uniformity of clamping force and the consistency of action.

[0036] Working principle: First, the wheel hub to be processed is placed on the chassis 7. The positioning component 9 is activated, and the shrinking component 901 is activated. Its rod extends and pushes the C-block 902 to move. Since there is a sliding fit between the inclined guide surface of the C-block 902 and the sliding wall of the sliding rod 903, the linear movement of the C-block 902 squeezes the sliding rod 903, forcing the sliding rod 903 to move radially. The positioning plate 904, which is fixedly connected to the sliding rod 903, moves synchronously in the groove of the chassis 7, squeezing the wheel hub from multiple directions until the center of the wheel hub is precisely aligned to the predetermined position.

[0037] After the wheel hub is precisely positioned, the clamping assembly 8 is activated, and the motor 806 starts to rotate, driving the rotating disk 802 connected to it to rotate. Since one end of the multi-segment component 805 is eccentrically connected to the running disk 802, and the other end is rotatably connected to the long rod 801, the rotational motion of the running disk 802 is converted into the horizontal linear movement of the long rod 801 through the linkage mechanism of the multi-segment component 805. The linear movement of the long rod 801 drives the fixed block 803 and the clamping plate 804 fixedly connected to it, so that the clamping plate 804 can firmly clamp the wheel hub. The rotation of the running disk 802 can synchronously drive all the clamping plates 804 to achieve uniform and reliable clamping.

[0038] Once the wheel hub is precisely aligned and securely clamped, the operator controls the pressing component 3 via the control panel 2. The pressing component 3 drives the fixing plate 4 to descend smoothly along the sliding column 6, and the drilling component 5 installed on the fixing plate 4 descends accordingly to perform drilling operations on the wheel hub. After drilling is completed, the pressing component 3 drives the fixing plate 4 to move in the opposite direction, causing the drilling component 5 to lift up, thus completing one drilling operation.

Claims

1. A drilling device for wheel hub bolt holes, comprising: A base (1) and a sliding column (6), the bottom end of which is vertically fixed to the top of the base (1); Fixed plate (4), the fixed plate (4) is slidably connected to the sliding column (6); Drilling component (5), which is fixedly installed in the middle of the fixing plate (4); The chassis (7) is disposed on top of the base (1) and below the drilled part (5); Its characteristic is that it further includes: The positioning component (9) and clamping component (8) are provided. The positioning component (9) includes: a retractable member (901), a C-block (902), a sliding rod (903), and a positioning plate (904). The output end of the retractable member (901) abuts against the C-block (902). The C-block (902) is slidably fitted to the sliding wall of the sliding rod (903). The outer side of the sliding rod (903) is fixedly connected to the positioning plate (904). The positioning plate (904) is slidably connected to the groove of the chassis (7). The clamping assembly (8) includes: a motor (806), a running disk (802), a multi-segment component (805), a long rod (801), a fixing block (803), and a clamping plate (804). The output shaft of the motor (806) is rotatably connected to the running disk (802). One end of the multi-segment component (805) is eccentrically rotatably connected to the running disk (802), and the other end of the multi-segment component (805) is rotatably connected to the long rod (801). The long rod (801) is fixedly connected to the fixing block (803), and the fixing block (803) is fixedly connected to the clamping plate (804).

2. The drilling equipment for wheel hub bolt holes according to claim 1, characterized in that: It also includes a pressing component (3), which is disposed on one side of the base (1) and is linked to the fixing plate (4) to drive the fixing plate (4) to move up and down along the sliding column (6).

3. The drilling equipment for wheel hub bolt holes according to claim 2, characterized in that: It also includes an operating table (2), which is fixedly connected to one side of the base (1).

4. The drilling equipment for wheel hub bolt holes according to claim 1, characterized in that: The retractable component (901) is a telescopic cylinder or an electric push rod.

5. The drilling equipment for wheel hub bolt holes according to claim 1, characterized in that: The C-block (902) has an inclined guide surface, and the sliding wall of the sliding rod (903) cooperates with the inclined guide surface to compress the sliding rod (903) to generate movement when the C-block (902) moves.

6. The drilling equipment for wheel hub bolt holes according to claim 1, characterized in that: The multi-segment component (805) includes two long strips and a transfer component rotatably connected between the two long strips.

7. The drilling equipment for wheel hub bolt holes according to claim 1, characterized in that: The clamping assembly (8) includes a plurality of radially distributed long rods (801), a fixing block (803), and a clamping plate (804), and includes a plurality of multi-segment pieces (805) corresponding to the long rods (801).

8. The drilling equipment for wheel hub bolt holes according to claim 7, characterized in that: The running disk (802) has an annular groove on its surface. The multi-segment components (805) are movably connected to the annular groove through one end of each component, so as to synchronously drive the long rod (801) through the rotation of the running disk (802).

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