Positioning clamp for hub numerical control machining
By combining the flipping unit on the base with the six-point synchronous positioning unit, the problems of uneven force distribution and manual handling in the wheel hub clamping device are solved, realizing automatic flipping and uniform clamping of the wheel hub, thus improving processing quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANGZHOU CHANGTAI VEHICLE MFG CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-12
AI Technical Summary
Existing wheel hub clamping devices mostly use four-sided manual positioning, which leads to uneven force on different parts of the wheel hub, affecting the processing quality. Furthermore, after processing, manual release of the clamps and removal are required, increasing labor intensity and making it difficult to meet the high-speed requirements of modern manufacturing.
The mounting shell is driven to rotate by a rotating unit on the base, combined with a six-point synchronous positioning unit, to achieve automatic rotation and uniform clamping of the wheel hub, reducing manual handling and improving the convenience of operation and processing stability.
It enables automatic rotation and uniform clamping of wheel hubs, improving processing quality and production efficiency, reducing manual operation, and adapting to the high-speed requirements of modern manufacturing.
Smart Images
Figure CN224223315U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wheel hub processing technology, specifically a positioning fixture for CNC machining of wheel hubs. Background Technology
[0002] Wheel hubs are key components of vehicles such as cars and motorcycles. They are mainly used to mount tires and connect the suspension system, and are usually made of metal materials such as aluminum alloys and steel.
[0003] During the wheel hub machining process, it is necessary to fix it with a positioning and clamping device to ensure machining accuracy and stability;
[0004] However, existing wheel hub clamping devices still have the following drawbacks:
[0005] 1. Traditional clamping devices mostly adopt a four-sided manual positioning structure, which requires operators to adjust the clamping components one by one. This results in uneven force on different parts of the wheel hub. During the processing, the wheel hub may undergo slight displacement due to the unbalanced force, affecting the processing quality and even causing the workpiece to be scrapped.
[0006] 2. After processing, the operator needs to manually release the clamp and move the wheel hub to the carrier, which not only increases the labor intensity but also reduces production efficiency, making it difficult to meet the high-speed requirements of modern manufacturing. Utility Model Content
[0007] The purpose of this invention is to provide a positioning fixture for CNC machining of wheel hubs to solve the problems mentioned in the prior art.
[0008] To achieve the above objectives, this utility model provides the following technical solution: a positioning fixture for CNC machining of wheel hubs, comprising: a base, of which two sets are provided, a flipping unit is installed between the bases, a mounting shell is fixedly connected to the flipping unit and supported by the base, a mounting cover is fixedly connected to the top of the mounting shell, and a positioning unit extending through the mounting cover is assembled inside the mounting shell; a positioning unit, comprising a turntable, a rotating shaft is installed inside the mounting shell, a turntable is fixedly connected to the rotating shaft, and an arc-shaped feature is provided on the turntable. The guide is slidably connected to the top of the mounting housing, with a guide rod extending through the arc-shaped guide. The top of the guide rod extends into the mounting cover and is fitted with a guide plate. The top of the guide plate is fixedly connected to a positioning component extending out of the mounting cover. The flipping unit includes a flipping shaft, which is fitted between the base and the base. A shaft seat that is installed and connected to the mounting housing is fixedly connected to the flipping shaft. Both ends of the flipping shaft extend out of the base and are fitted with gears. Hydraulic telescopic cylinders are fixedly connected to both sides of the base, and the output end of the hydraulic telescopic cylinders is fitted with a toothed plate that meshes with the gear.
[0009] As a preferred feature, each of the four corners of the base is fixedly equipped with a support base, and the support base is provided with mounting holes.
[0010] As a preferred feature, support strips are fixedly connected to the bottom of both sides of the mounting shell, and a guide port communicating with the mounting cover is provided on the top of the mounting shell, with a guide rod penetrating through the guide port.
[0011] Preferably, a drive unit is fixedly connected to the bottom of the mounting housing, and the drive unit is connected to the rotating shaft for transmission. The drive unit includes a cover, and the bottom of the mounting housing is fixedly connected to the cover. A worm gear is mated inside the cover, and the worm wheel in the worm gear is installed and connected to the bottom end of the rotating shaft. A motor is fixedly connected to the outside of the cover, and the motor is connected to the worm in the worm gear.
[0012] As a preferred embodiment, the positioning component includes a mounting bracket, a guide opening 2 is provided on the top of the mounting cover, a mounting bracket that passes through the guide opening 2 is fixedly connected to the top of the guide rod, a guide block is slidably connected inside the mounting bracket, a hydraulic telescopic cylinder 1 is fixedly connected to the top of the mounting bracket, the output end of the hydraulic telescopic cylinder 1 is installed and connected to the top of the guide block, and a positioning head is fixedly connected to the inner side of the guide block.
[0013] As a preferred embodiment, a guide groove is fixedly connected to the bottom of the mounting housing, and a guide block that is slidably connected to the guide plate is mounted in the guide groove.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] The rotating unit on the base drives the mounting shell to rotate, so the wheel hub in the positioning state will rotate synchronously to achieve its own downward operation. By rotating the wheel hub downward, the processed wheel hub can be rotated down. Personnel only need to place the carrier on the wheel hub's downward point to receive it, reducing manual handling and increasing the convenience of operation.
[0016] The positioning unit employs a six-point synchronous positioning motion, which is more synchronous and stable than the traditional four-point single-point adjustment positioning. This ensures that the clamping force at each positioning point is uniform, preventing the wheel hub from being affected by different clamping forces during processing. Attached Figure Description
[0017] Figure 1 This is a first-view structural diagram of the positioning fixture for CNC machining of wheel hubs according to this utility model;
[0018] Figure 2 This is a second-view structural diagram of the positioning fixture for CNC machining of wheel hubs according to this utility model;
[0019] Figure 3 This is a schematic diagram of the first internal structure of the positioning fixture for CNC machining of wheel hubs according to this utility model;
[0020] Figure 4This is a schematic diagram of the second internal structure of the positioning fixture for CNC machining of wheel hubs according to this utility model;
[0021] Figure 5 This utility model Figure 1 A magnified structural diagram of part A in the diagram;
[0022] Figure 6 This is a schematic diagram of the composition of the positioning component of this utility model.
[0023] Figure label:
[0024] 100. Mounting housing; 101. Support strip; 1001. Guide port one;
[0025] 200. Mounting cover; 2001. Guide port two;
[0026] 300. Positioning unit; 301. Turntable; 3011. Arc-shaped guide; 302. Rotating shaft; 303. Guide plate; 304. Guide rod; 305. Guide groove;
[0027] 310. Positioning component; 311. Hydraulic telescopic cylinder one; 312. Positioning head; 313. Guide block; 314. Mounting bracket;
[0028] 400, base; 401, support base; 4011, mounting hole;
[0029] 500. Tilting unit; 501. Tilting shaft; 502. Shaft seat; 503. Gear; 504. Gear plate; 505. Hydraulic telescopic cylinder II;
[0030] 600, Drive unit; 601, Housing; 602, Worm gear. Detailed Implementation
[0031] 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.
[0032] Example: This utility model provides a technical solution for a positioning fixture for CNC machining of wheel hubs, such as... Figures 1-6 As shown, it includes: a base 400, which is provided in two sets, a flipping unit 500 is installed between the bases 400, a mounting shell 100 is fixedly connected to the flipping unit 500, and the mounting shell 100 is supported by the base 400, a mounting cover 200 is fixedly connected to the top of the mounting shell 100, and a positioning unit 300 extending through the mounting cover 200 is assembled inside the mounting shell 100.
[0033] In the above scheme:
[0034] The rotating unit 500 on the base 400 drives the mounting shell 100 to rotate, so that the wheel hub in the positioning state will rotate synchronously to achieve its own downward operation. In this way, the processed wheel hub can be rotated down by rotating the wheel hub. Personnel only need to place the carrier at the downward point of the wheel hub to complete the receiving, reducing the need for manual handling and increasing the convenience of operation.
[0035] By combining the mounting housing 100 and the mounting cover 200, the device can both support the positioned wheel hub and support and install the positioning unit 300.
[0036] The positioning unit 300 adopts a six-point synchronous positioning motion, which is more synchronous and stable than the traditional four-point single-point adjustment positioning. This ensures that the clamping force of each positioning point can be uniform, so that the wheel hub will not be affected by the different clamping forces during processing.
[0037] The positioning unit 300 includes a turntable 301, a rotating shaft 302 is mounted inside the mounting housing 100, the turntable 301 is fixedly connected to the rotating shaft 302, and the turntable 301 is provided with an arc-shaped guide 3011. A guide rod 304 that passes through the arc-shaped guide 3011 is slidably connected to the top of the mounting housing 100. The top of the guide rod 304 extends into the mounting cover 200 and is mounted with a guide plate 303. A positioning component 310 that extends out of the mounting cover 200 is fixedly connected to the top of the guide plate 303.
[0038] The flipping unit 500 includes a flipping shaft 501, which is connected to the base 400. A bearing 502 that is installed and connected to the mounting housing 100 is fixed on the flipping shaft 501. Both ends of the flipping shaft 501 extend out of the base 400 and are connected to gears 503. Hydraulic telescopic cylinders 505 are fixed on both sides of the base 400, and the output end of the hydraulic telescopic cylinders 505 is connected to a toothed plate 504 that meshes with the gears 503.
[0039] During daily operations:
[0040] Personnel place the wheel hub at the center point on the top of the mounting cover 200 to ensure that the wheel hub is positioned correctly and will not deviate. Then, personnel can drive the turntable 301 to rotate. The turntable 301 uses its own arc-shaped guide port 3011 to synchronously drive the guide rod 304. At that time, the positioning component 310 on the top of the guide rod 304 will synchronously expand and contract, causing the positioning component 310 to synchronously exit or enter the positioning state of the wheel hub.
[0041] Once the wheel hub is machined, the hydraulic telescopic cylinder 505 can be activated to push the gear plate 504. The gear plate 504 synchronously drives the gear 503, which in turn drives the tilting shaft 501 to rotate. The shaft seat 502 on the shaft drives the mounting shell 100 to tilt down 180°. At this point, the personnel can place the carrier on the tilted part of the mounting shell 100. The personnel can then release the positioning state of the wheel hub, causing the wheel hub to fall onto the carrier, avoiding manual handling by the personnel.
[0042] like Figure 1-6 As shown, in order to secure the device to the CNC equipment, support seats 401 are fixedly installed at the four corners of the bottom of the base 400, and mounting holes 4011 are provided on the support seats 401.
[0043] Specifically, personnel can use the cooperation between the parts and the mounting holes 4011 to fix the support base 401 on the CNC machine, ensuring the installation connection between the device and the CNC equipment.
[0044] Furthermore, support strips 101 are fixed to the bottom of both sides of the mounting shell 100, and a guide opening 1001 communicating with the mounting cover 200 is provided on the top of the mounting shell 100. The guide opening 1001 is penetrated by a guide rod 304.
[0045] Specifically, when the drive turntable 301 rotates, the turntable 301 uses its own arc-shaped guide port 3011 to synchronously drive the guide rod 304. At this time, the guide rod 304 is constrained by the guide port 1001, causing the guide rod 304 to move linearly within the guide port 1001, which can complete the expansion and contraction movement of the positioning component 310 and achieve its own positioning purpose.
[0046] The support plate 101 ensures that the mounting shell 100 can sit stably on the base 400, ensuring its own stability while also ensuring the rotational movement of the mounting shell 100.
[0047] like Figure 1-6 As shown, in order to enable the turntable 301 to rotate automatically, a drive unit 600 is further fixed to the bottom of the mounting shell 100, and the drive unit 600 is connected to the rotating shaft 302. The drive unit 600 includes a cover 601, and the cover 601 is fixed to the bottom of the mounting shell 100. A worm gear 602 is connected inside the cover 601. The worm wheel in the worm gear 602 is installed and connected to the bottom end of the rotating shaft 302. A motor is fixed to the outside of the cover 601, and the motor is connected to the worm in the worm gear 602.
[0048] Specifically, during positioning, the motor is started, which drives the worm to rotate, and the worm drives the worm wheel to rotate synchronously, thus driving the rotating shaft 302. At the same time, the cooperation of the worm wheel and worm 602 can effectively ensure the positioning status of the positioning component 310, ensuring that it will not become loose during positioning.
[0049] Furthermore, the positioning component 310 includes a mounting bracket 314, a guide opening 2001 is provided on the top of the mounting cover 200, the mounting bracket 314 through the guide opening 2001 is fixedly connected to the top of the guide rod 303, a guide block 313 is slidably connected inside the mounting bracket 314, a hydraulic telescopic cylinder 311 is fixedly connected to the top of the mounting bracket 314, the output end of the hydraulic telescopic cylinder 311 is installed and connected to the top of the guide block 313, and a positioning head 312 is fixedly connected to the inner side of the guide block 313.
[0050] During this period, the synchronous guiding operation of guide port 2001 on mounting frame 314 provides guiding space for mounting frame 314;
[0051] Before positioning, the personnel need to adjust the positioning height according to the wheel hub specifications. The adjustment method is as follows: start the hydraulic telescopic cylinder 311 to drive the bottom guide block 313 to move up and down synchronously. At that time, the positioning head 312 on the guide block 313 can be adjusted, so that the positioning point of the positioning head 312 can achieve the required adjustment purpose.
[0052] A guide groove 305 is fixedly connected to the bottom of the mounting housing 100, and a guide block that is slidably connected to the guide plate 304 is mounted in the guide groove 305.
[0053] When the guide rod 304 conducts the transmission, in order to ensure its own stability during guidance, the guide rod 304 can use the bottom guide block to ensure linear movement according to the trajectory of the guide groove 305. The purpose is to ensure the stability of the positioning component during expansion and contraction and increase the structural strength.
[0054] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A positioning fixture for CNC machining of wheel hubs, characterized in that, include: The base (400) is provided in two sets. A flipping unit (500) is installed between the bases (400). A mounting shell (100) is fixedly connected to the flipping unit (500), and the mounting shell (100) is supported by the base (400). A mounting cover (200) is fixedly connected to the top of the mounting shell (100). A positioning unit (300) that extends through the mounting cover (200) is assembled inside the mounting shell (100). The positioning unit (300) includes a turntable (301), a rotating shaft (302) is installed inside the mounting housing (100), the turntable (301) is fixedly connected to the rotating shaft (302), and an arc-shaped guide (3011) is provided on the turntable (301). A guide rod (304) that passes through the arc-shaped guide (3011) is slidably connected to the top of the mounting housing (100). The top of the guide rod (304) extends into the mounting cover (200) and is installed with a guide plate (303). A positioning component (310) that extends out of the mounting cover (200) is fixedly connected to the top of the guide plate (303). The flipping unit (500) includes a flipping shaft (501) which is connected to the base (400). A shaft seat (502) that is installed and connected to the mounting housing (100) is fixed on the flipping shaft (501). Both ends of the flipping shaft (501) extend out of the base (400) and are connected to gears (503). Hydraulic telescopic cylinders (505) are fixed on both sides of the base (400), and the output end of the hydraulic telescopic cylinders (505) is connected to a toothed plate (504) that meshes with the gears (503).
2. The positioning fixture for CNC machining of wheel hubs according to claim 1, characterized in that: Support seats (401) are fixedly installed at the four corners of the bottom of the base (400), and mounting holes (4011) are provided on the support seats (401).
3. A positioning fixture for CNC machining of wheel hubs according to claim 2, characterized in that: Support plates (101) are fixed to the bottom of both sides of the mounting shell (100). The top of the mounting shell (100) is provided with a guide port (1001) that communicates with the mounting cover (200). The guide port (1001) is penetrated by a guide rod (304).
4. A positioning fixture for CNC machining of wheel hubs according to claim 3, characterized in that: The bottom of the mounting housing (100) is fixedly connected to a drive unit (600), and the drive unit (600) is connected to the rotating shaft (302) in a transmission connection. The drive unit (600) includes a cover (601). The bottom of the mounting housing (100) is fixedly connected to the cover (601). The inside of the cover (601) is connected to a worm gear (602). The worm wheel in the worm gear (602) is installed and connected to the bottom end of the rotating shaft (302). The outside of the cover (601) is fixedly connected to a motor, and the motor is connected to the worm in the worm gear (602).
5. A positioning fixture for CNC machining of wheel hubs according to claim 4, characterized in that: The positioning component (310) includes a mounting bracket (314), a guide port (2001) is provided on the top of the mounting cover (200), the mounting bracket (314) through the guide port (2001) is fixedly connected to the top of the guide rod (304), a guide block (313) is slidably connected inside the mounting bracket (314), a hydraulic telescopic cylinder (311) is fixedly connected to the top of the mounting bracket (314), the output end of the hydraulic telescopic cylinder (311) is installed and connected to the top of the guide block (313), and a positioning head (312) is fixedly connected to the inner side of the guide block (313).
6. A positioning fixture for CNC machining of wheel hubs according to claim 5, characterized in that: The bottom of the mounting housing (100) is fixedly connected to a guide groove (305), and a guide block that is slidably connected to the guide plate (303) is mounted in the guide groove (305).