A hub bearing unit pull-down drilling tool
By combining the chip collection system with the centrifugal force of the turntable, the problem of chip splashing in the drilling tooling of the wheel hub bearing unit is solved, achieving environmental cleanliness and extended equipment life, while ensuring machining accuracy and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG YOUSHI MASCH CO LTD
- Filing Date
- 2025-07-18
- Publication Date
- 2026-07-31
AI Technical Summary
The existing wheel hub bearing unit drilling fixtures lack an effective waste chip collection device, causing waste chips to fly everywhere, affecting the cleanliness and safety of the working environment, and may also lead to component wear, reduced machining accuracy and equipment life.
A chip collection system was designed, comprising a semi-circular chip collection hood, an annular chip discharge port, an inclined surface, and a chip collection cylinder. Through the installation assembly of the semi-circular chip collection hood with T-shaped grooves, T-shaped blocks, and bolts, the system achieves all-round interception and collection of waste chips. Combined with the centrifugal force of the motor-driven turntable, the system completes the cleaning of waste chips.
It effectively prevents waste chips from splashing, keeps the working environment clean, avoids waste chips from entering moving parts, extends the service life of equipment, ensures processing accuracy, and improves workpiece clamping efficiency.
Smart Images
Figure CN224575220U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drilling tooling technology, specifically a pull-down drilling tooling for a wheel hub bearing unit. Background Technology
[0002] The pull-down drilling fixture for wheel hub bearing units is a specialized piece of equipment used for drilling wheel hub bearing units. It drives the drill bit through a pull-down mechanism to perform drilling operations, which can precisely control the drilling position and depth, improve processing accuracy and efficiency, and play an important role in the production and manufacturing of wheel hub bearing units.
[0003] Application No. 202320702404.X discloses a flywheel housing drilling fixture, which includes a moving component and a clamping component. The flywheel housing to be drilled is placed on the top surface of a chassis. The operator can then rotate a second rotating handle, causing a moving plate connected to the handle to rotate accordingly. This allows a double-threaded screw installed inside the chassis to rotate synchronously under the drive of a connecting rod. The two moving plates mounted on the double-threaded screw surface then move two clamping plates in opposite directions, thereby clamping and fixing the flywheel housing. Furthermore, the single-threaded screw can be rotated... This allows the movable block to move horizontally in a directional manner, thereby adjusting the horizontal position of the flywheel housing and moving the connecting plate horizontally so that the insert post disengages from the fixing slot. At this point, the rotating post can rotate horizontally at a certain angle. After rotation, the spring drives the insert post to install in the corresponding fixing slot to fix the rotating post. Therefore, it not only facilitates the operator to fix and disassemble the flywheel housing, but also allows for convenient and quick adjustment of the fixed position of the flywheel housing without first disassembling and adjusting it. Drilling holes can be made at different positions on its surface, thereby improving the practicality of the device.
[0004] The aforementioned device lacks an effective waste chip collection system during drilling, causing the waste chips generated during drilling to fly everywhere. This not only affects the cleanliness of the working environment but may also enter the moving parts of the tooling, leading to wear and reducing the tooling's service life and machining accuracy. At the same time, the flying waste chips also pose a safety hazard of scratching operators, affecting the safety and continuity of production. Therefore, we propose a wheel hub bearing unit pull-down drilling tooling. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a pull-down drilling fixture for wheel hub bearing units, which solves the aforementioned problems.
[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a pull-down drilling fixture for a wheel hub bearing unit, comprising a support plate, a first cylinder fixedly connected to the top of the support plate, a drilling fixture body fixedly connected to the output end of the first cylinder, a turntable provided on the support plate, and semi-circular chip collection covers provided on both sides of the support plate, with two sets of semi-circular chip collection covers symmetrically arranged on both sides of the support plate, a chip collection cylinder connected to the bottom of the support plate, and an annular chip discharge port provided at the top of the support plate. An installation assembly is provided between the semi-circular chip collection covers and the support plate, and the installation assembly fixes the semi-circular chip collection covers.
[0007] Preferably, the annular chip discharge port is located between the semi-circular chip collection hood and the chip collection cylinder. The mounting assembly includes a T-shaped groove, a T-shaped block, and bolts. The T-shaped groove is opened on both sides of the support plate. The T-shaped block is fixedly connected to the bottom of the semi-circular chip collection hood. The T-shaped block matches the T-shaped groove. The T-shaped block is slidably connected to the inner wall of the T-shaped groove. The bolts are located between the top of the support plate and the T-shaped block.
[0008] Preferably, a U-shaped mounting block is fixedly connected to the bottom of the support plate, a motor is fixedly connected to the bottom of the U-shaped mounting block, a rotating rod is fixedly connected to the output end of the motor, and the turntable is fixedly connected to the top of the rotating rod.
[0009] Preferably, a second cylinder is fixedly connected to both sides of the turntable, and an L-shaped clamping block is fixedly connected to the output end of the second cylinder.
[0010] Preferably, the bottom end of the chip collection cylinder is tapered, and a sealing cap is provided at the tapered bottom end.
[0011] Preferably, the inner wall of the annular chip discharge port is provided with an inclined surface.
[0012] Compared with the prior art, this utility model provides a pull-down drilling fixture for a wheel hub bearing unit, which has the following advantages: 1. This wheel hub bearing unit pull-down drilling fixture, through an integrated collection system consisting of a semi-circular chip collection hood, annular chip discharge port, inclined surface and chip collection cylinder, can intercept waste chips in all directions, solve the problem of waste chips flying everywhere, keep the working environment clean, effectively prevent waste chips from entering moving parts such as the first cylinder and motor, reduce the failure of parts caused by wear due to waste chips, solve the problem of shortened tooling life and reduced accuracy caused by waste chips intruding into the inside of parts, extend the service life of equipment and ensure stable machining accuracy.
[0013] 2. The pull-down drilling fixture for the hub bearing unit features a semi-circular chip collection cover based on a T-slot, T-block, and bolt mounting assembly, facilitating quick disassembly and installation and improving workpiece clamping efficiency. Attached Figure Description
[0014] Figure 1This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of this utility model; Figure 4 for Figure 3 A magnified view of part A in the diagram.
[0015] In the diagram: 1. Support plate; 2. T-slot; 3. T-block; 4. Bolt; 5. Semi-circular chip collection hood; 6. First cylinder; 7. Drilling fixture body; 8. Second cylinder; 9. L-shaped clamping block; 10. Chip collection cylinder; 11. Sealing cover; 12. Motor; 13. U-shaped mounting block; 14. Rotating rod; 15. Turntable; 16. Annular chip discharge port; 17. Inclined surface. Detailed Implementation
[0016] 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.
[0017] Please see Figure 1-4 A pull-down drilling fixture for a wheel hub bearing unit includes a support plate 1. A first cylinder 6 is fixedly connected to the top of the support plate 1, and a drilling fixture body 7 is fixedly connected to the output end of the first cylinder 6. A turntable 15 is provided on the support plate 1, and two sets of semi-circular chip collection covers 5 are provided on both sides of the support plate 1. A chip collection cylinder 10 is connected to the bottom of the support plate 1, and an annular chip discharge port 16 is provided at the top of the support plate 1. An installation assembly is provided between the semi-circular chip collection covers 5 and the support plate 1 to fix the semi-circular chip collection covers 5. The annular chip discharge port 16 is located between the semi-circular chip collection covers 5 and the chip collection cylinder 10, forming a key channel for waste chips to enter the chip collection cylinder 10 from the semi-circular chip collection covers 5. T-shaped grooves 2 in the installation assembly are opened on both sides of the support plate 1, and T-shaped blocks 3 are fixed to the bottom of the semi-circular chip collection covers 5. The shapes of the two match, so that the semi-circular chip collection covers 5 can slide along the T-shaped grooves 2. During installation, align the T-shaped block 3 of the semi-circular chip collection cover 5 with the T-shaped groove 2, insert it, and slide it into place. Fix the semi-circular chip collection cover 5 by tightening the bolt 4 set between the top of the support plate 1 and the T-shaped block 3. During disassembly, loosen the bolt 4 to slide the semi-circular chip collection cover 5 out of the T-shaped groove 2.
[0018] The annular chip discharge port 16 is located between the semi-circular chip collection cover 5 and the chip collection cylinder 10. The mounting components include a T-slot 2, a T-block 3, and bolts 4. The T-slot 2 is opened on both sides of the support plate 1. The T-block 3 is fixedly connected to the bottom of the semi-circular chip collection cover 5. The T-block 3 matches the T-slot 2 and is slidably connected to the inner wall of the T-slot 2. The bolts 4 are set between the top of the support plate 1 and the T-block 3. During installation, the T-block 3 of the semi-circular chip collection cover 5 is aligned with the T-slot 2, inserted, and slid into place. The semi-circular chip collection cover 5 is fixed by tightening the bolts 4 set between the top of the support plate 1 and the T-block 3. During disassembly, the bolts 4 are loosened to slide the semi-circular chip collection cover 5 out of the T-slot 2.
[0019] A U-shaped mounting block 13 is fixedly connected to the bottom of the support plate 1. A motor 12 is fixedly connected to the bottom of the U-shaped mounting block 13. A rotating rod 14 is fixedly connected to the output end of the motor 12. A turntable 15 is fixedly connected to the top of the rotating rod 14. After the motor 12 is powered on, its output end drives the rotating rod 14 to rotate, and the turntable 15 fixed to the top of the rotating rod 14 rotates accordingly. After drilling is completed, the motor 12 is started, and the rotation of the turntable 15 generates centrifugal force, causing the residual waste chips on the turntable 15 to splash onto the inner wall of the semi-circular chip collection hood 5 under the action of centrifugal force. Then, the chips enter the chip collection cylinder 10 through the annular chip discharge port 16 and the inclined surface 17, completing the cleaning of residual chips.
[0020] The turntable 15 is fixedly connected to the two sides of the second cylinder 8, and the output end of the second cylinder 8 is fixedly connected to the L-shaped clamping block 9; when the second cylinder 8 is started, the second cylinder 8 drives the L-shaped clamping block 9 to clamp and fix the wheel hub bearing.
[0021] The bottom of the chip collection cylinder 10 is conical, and a sealing cover 11 is provided at the bottom of the conical bottom. The sealing cover 11 at the bottom of the conical bottom remains closed during the chip collection process to prevent chip leakage. When it is necessary to clean the chip, the sealing cover 11 is opened and the chip can be discharged from the bottom of the chip collection cylinder 10.
[0022] The inner wall of the annular chip discharge port 16 is provided with an inclined surface 17. The inclined surface 17 of the inner wall of the annular chip discharge port 16, with the guiding effect of the inclined surface, allows the waste chips to enter the chip collection cylinder 10 more smoothly under the guidance of gravity and the inclined surface 17 when they splash onto the inner wall of the semi-circular chip collection hood 5 and slide down to the annular chip discharge port 16, thus avoiding the accumulation and blockage of waste chips at the annular chip discharge port 16.
[0023] Structural Description: Support Plate 1: It is the basic component of the entire tooling, providing an installation and support platform for other components such as the first cylinder 6 and the turntable 15; its stable structure ensures the stability of the position of each component during drilling. The T-shaped groove 2 is used to install the semi-circular chip collection cover 5, and there is also an annular chip discharge port 16, which is an important part of the waste chip collection channel.
[0024] T-slot 2: It is opened on both sides of the support plate 1 and is adapted to the shape of the T-block 3 at the bottom of the semi-circular chip collection cover 5. Through the sliding cooperation between the two, the semi-circular chip collection cover 5 can be conveniently installed and disassembled, and plays a key positioning and fixing role in the process of workpiece clamping and chip collection.
[0025] T-block 3: Fixedly connected to the bottom of the semi-circular chip collection cover 5, and cooperates with the T-slot 2 on the support plate 1; it can slide along the T-slot 2, and with the bolt 4, it can quickly install the semi-circular chip collection cover 5 into the designated position and fix it, ensuring the stability of the semi-circular chip collection cover 5 during use.
[0026] Bolt 4: Used to fix the T-shaped block 3 at the bottom of the semi-circular chip collection cover 5; by tightening or loosening bolt 4, the semi-circular chip collection cover 5 can be connected or separated from the support plate 1. The operation is simple and convenient for installing and disassembling the semi-circular chip collection cover 5 during workpiece clamping and maintenance.
[0027] Semicircular chip collection hood 5: Symmetrically arranged on both sides of the support plate 1, forming a closed space to collect the waste chips generated during drilling; its inner wall guides the waste chips down and into the chip collection cylinder 10 through the annular chip discharge port 16, effectively preventing waste chips from splashing and ensuring a clean working environment and operator safety.
[0028] The first cylinder 6 is fixed to the top of the support plate 1. Through its telescopic movement, it drives the drilling fixture body 7 to move up and down, thereby realizing the drilling operation on the wheel hub bearing unit. It can precisely control the drilling depth and feed rate, ensuring the accuracy and efficiency of drilling.
[0029] Drilling fixture body 7: connected to the output end of the first cylinder 6, and completes the drilling work under the drive of the first cylinder 6; the drill bit and other components are installed inside, and it is the actuator that directly drills the hub bearing unit, which determines the quality and effect of drilling.
[0030] The second cylinder 8 is installed on both sides of the turntable 15. Through its telescopic movement, it drives the L-shaped clamping block 9 to move, thereby clamping and releasing the hub bearing unit. It can quickly and stably clamp the workpiece and ensure that the workpiece position is fixed during the drilling process.
[0031] L-shaped clamping block 9: Connected to the output end of the second cylinder 8, under the drive of the second cylinder 8, it clamps and fixes the hub bearing unit placed on the turntable 15 from both sides, providing reliable clamping force to ensure that the workpiece will not shift during drilling.
[0032] Chip collection cylinder 10: connected to the bottom of support plate 1, used to collect the waste chips generated during drilling; its bottom end is tapered to facilitate the collection of waste chips, and together with the sealing cover 11, it can prevent waste chip leakage and facilitate centralized cleaning.
[0033] Sealing cover 11: Installed at the conical part at the bottom of the chip collection cylinder 10, it remains closed during chip collection to prevent chip leakage. It can be opened when cleaning is required, facilitating quick discharge of chips from the chip collection cylinder 10, making operation convenient.
[0034] Motor 12: Fixed to the bottom of U-shaped mounting block 13, it drives the rotating rod 14 to rotate after being powered on, which in turn drives the turntable 15 to rotate; after drilling is completed, centrifugal force is used to make the residual waste on the turntable 15 enter the chip collection cylinder 10 to assist in cleaning up the waste.
[0035] U-shaped mounting block 13: Installed at the bottom of support plate 1, it provides a mounting position for motor 12, and plays the role of supporting and fixing motor 12 to ensure stable operation of motor 12, thereby driving turntable 15 to work normally.
[0036] Rotating rod 14: One end is connected to the output end of motor 12, and the other end is fixed to turntable 15, transmitting the power of motor 12 and driving turntable 15 to rotate; in the waste cleaning process, the residual waste on turntable 15 enters the waste collection system due to centrifugal force.
[0037] Turntable 15: Installed on top of rotating rod 14, used to place the wheel hub bearing unit to be processed; it can rotate under the drive of motor 12, and works with second cylinder 8 and L-shaped clamping block 9 to fix the workpiece, while using centrifugal force to assist in cleaning residual waste.
[0038] Annular chip discharge port 16: Located at the top of the support plate 1, between the semi-circular chip collection hood 5 and the chip collection cylinder 10, it is the channel for waste chips to enter the chip collection cylinder 10 from the semi-circular chip collection hood 5. The inclined surface 17 of the inner wall guides the waste chips to slide down smoothly.
[0039] Inclined surface 17: Located on the inner wall of the annular chip discharge port 16, it uses gravity and the guiding effect of the inclined surface to guide the waste chips from the semi-circular chip collection hood 5 into the chip collection cylinder 10 quickly and smoothly, avoiding the accumulation of waste chips in the annular chip discharge port 16 and improving the waste chip collection efficiency.
[0040] Loosen bolt 4 to release the T-shaped block 3 at the bottom of the semi-circular chip collection cover 5 from its confinement within the T-slot 2. Push the two sets of semi-circular chip collection covers 5 to the sides and place the wheel hub bearing to be drilled onto the turntable 15. Activate the second cylinder 8; its output end drives the L-shaped clamping block 9 to clamp and fix the wheel hub bearing. Then, reinstall the semi-circular chip collection cover 5 and tighten bolt 4 to complete the fixation. Activate the first cylinder 6; its output end drives the drilling fixture body 7 to descend, performing the drilling operation on the wheel hub bearing. The waste chips generated during drilling splash onto the inner wall of the semi-circular chip collection cover 5. Under the influence of gravity, the chips slide down the inner wall and are guided by the annular chip discharge port 16 and the inclined surface 17 of the inner wall, falling into the chip collection cylinder 10 at the bottom of the support plate 1. After drilling is completed, the motor 12 on the U-shaped mounting block 13 is started. The motor 12 drives the turntable 15 to rotate through the rotating rod 14. The residual chips on the turntable 15 are splashed again to the inner wall of the semi-circular chip collection cover 5 under the action of centrifugal force. Guided by the annular chip discharge port 16 and the inclined surface 17, they enter the chip collection cylinder 10. Finally, the sealing cover 11 at the bottom of the chip collection cylinder 10 is opened to collect and discharge the chips.
[0041] 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 pull-down drilling fixture for a wheel hub bearing unit, comprising a support plate (1), wherein a first cylinder (6) is fixedly connected to the top of the support plate (1), and a drilling fixture body (7) is fixedly connected to the output end of the first cylinder (6), and a turntable (15) is provided on the support plate (1), characterized in that, Also includes: The support plate (1) has a semi-circular chip collection cover (5) on both sides. The semi-circular chip collection cover (5) has two sets and is symmetrically arranged on both sides of the support plate (1). The bottom of the support plate (1) is connected to a chip collection cylinder (10). The top of the support plate (1) has an annular chip discharge port (16). An installation component is provided between the semi-circular chip collection cover (5) and the support plate (1) to fix the semi-circular chip collection cover (5).
2. A wheel hub bearing unit pull-down drilling tool according to claim 1, characterized in that: The annular chip discharge port (16) is located between the semi-circular chip collection cover (5) and the chip collection cylinder (10). The installation assembly includes a T-shaped groove (2), a T-shaped block (3), and a bolt (4). The T-shaped groove (2) is opened on both sides of the support plate (1). The T-shaped block (3) is fixedly connected to the bottom of the semi-circular chip collection cover (5). The T-shaped block (3) matches the T-shaped groove (2). The T-shaped block (3) is slidably connected to the inner wall of the T-shaped groove (2). The bolt (4) is set between the top of the support plate (1) and the T-shaped block (3).
3. A wheel hub bearing unit pull down drilling fixture according to claim 1, wherein: The support plate (1) is fixedly connected to a U-shaped mounting block (13) at the bottom, and a motor (12) is fixedly connected to the bottom of the U-shaped mounting block (13). A rotating rod (14) is fixedly connected to the output end of the motor (12), and the turntable (15) is fixedly connected to the top of the rotating rod (14).
4. A wheel hub bearing unit pull down drilling fixture according to claim 1, wherein: The turntable (15) is fixedly connected to two sides of a second cylinder (8), and the output end of the second cylinder (8) is fixedly connected to an L-shaped clamping block (9).
5. The wheel hub bearing unit pull-down drilling fixture according to claim 1, characterized in that: The bottom end of the chip collection cylinder (10) is tapered, and a sealing cap (11) is provided at the tapered bottom end.
6. A wheel hub bearing unit pull down drilling fixture according to claim 1, wherein: The inner wall of the annular chip discharge port (16) is provided with a slope (17).