A flat clamp stability detection mechanism
By designing a planar fixture stability detection mechanism, using a concentric circle structure composed of clamping blocks, clamping rings, and spheres, combined with airbag pressing and electromagnet module locking, the problem of wheel hub tilting during drilling was solved, achieving horizontal fixation and accurate detection of the wheel hub.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG JILONG MACHINERY CO LTD
- Filing Date
- 2025-09-02
- Publication Date
- 2026-06-12
AI Technical Summary
The existing fixture has a simple structure, which makes the wheel hub prone to tilting during the drilling process, affecting the drilling accuracy.
A planar clamp stability detection mechanism was designed. It utilizes a concentric circle structure composed of clamping blocks, clamping rings, and spheres. Through the cooperation of airbag pressing and electromagnet module locking blocks, the wheel hub is ensured to be horizontally fixed, and the accuracy is detected by a pressure sensing unit.
This improves the stability and accuracy of the wheel hub during the drilling process, avoiding drilling deviations caused by tilting.
Smart Images

Figure CN224354092U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wheel hub processing equipment technology, specifically a planar fixture stability testing mechanism. Background Technology
[0002] There are various types of car wheels, including a model called 6H. A flat fixture is needed during the drilling process for these wheels.
[0003] Currently, the fixtures used in the market have a simple structure, in which the support base is directly fixed to the machine bed, and a pressure plate is provided corresponding to the support base. The pressure plate is connected to the machine bed via a cylinder or hydraulic cylinder. During drilling, the pressure plate presses the hub tightly onto the support base, and the drill bit passes through the template to perform countersinking machining on the existing hole in the hub.
[0004] However, since the surface of the wheel hub is mostly curved, workers are prone to negligence during the clamping process, resulting in the wheel hub not being level after clamping. In addition, the stability of the clamping mechanism is weak, which makes the wheel hub very thick and in a tilted state that is not visible to the naked eye during the drilling process, resulting in drilling deviation and affecting the drilling effect. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] To address the shortcomings of existing technologies, this utility model provides a planar fixture stability detection mechanism, which solves the problems mentioned in the background section.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: a planar fixture stability detection mechanism, comprising a worktable, multiple clamping blocks, and a clamping ring, wherein the multiple clamping blocks are slidably fitted on the top of the worktable, the multiple clamping blocks are arranged in a ring, the clamping ring is located above the clamping blocks, and multiple inserts are connected to the outer side of the clamping ring.
[0009] Multiple inserts correspond one-to-one with multiple clamps. The end of the insert away from the clamp ring is bent vertically downward and inserted into the top of the clamp.
[0010] An air ring is installed at the bottom of the clamp ring. The wheel hub is held by the clamping block and the clamp ring. After the air ring is inflated, it contacts the top of the wheel hub.
[0011] The top of the workbench is connected to a sphere, which serves as the center point. The clamping block, clamping ring, and sphere are arranged in concentric circles, and the top of the sphere abuts against the center point of the wheel hub.
[0012] Preferably, the top of the clamping block has a slot adapted to the insert, the inner side of the clamping block has a sliding groove, an electromagnet module is connected in the sliding groove, an iron locking block is slidably fitted in the sliding groove, a spring is connected between the electromagnet module and the locking block, and one end of the locking block extends outside the electromagnet module.
[0013] Preferably, it also includes a slide bar, and through grooves are distributed in a ring around the top of the worktable. The slide bar slides in conjunction with the through grooves, the top of the slide bar is connected to the clamping block, and a pressure sensing unit is installed on the top of the slide bar.
[0014] Preferably, an electric actuator is connected to the bottom of the worktable, and the movable end of the electric actuator is connected to the lower end of the slide bar.
[0015] (III) Beneficial Effects
[0016] This utility model provides a planar fixture stability detection mechanism. It has the following beneficial effects:
[0017] 1. This planar fixture stability testing mechanism consists of a worktable, slide bar, clamping blocks, clamping rings, an air ring, and a ball. The clamping blocks, clamping rings, and ball work together to fix the wheel hub. Inflating the air ring presses down on the wheel hub, pushing down the tilted end and keeping the hub level. Then, an electromagnet module, spring, and locking blocks work together to hold the outer edge of the wheel hub in place, achieving a reinforcement effect. A pressure sensing unit is included to improve testing accuracy. This prevents the wheel hub from being tilted, which could affect drilling results. Attached Figure Description
[0018] Figure 1 This is a three-dimensional view of the structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the workbench structure of this utility model;
[0020] Figure 3 This is another schematic diagram of the workbench structure of this utility model;
[0021] Figure 4 This is a schematic diagram of the clamping ring structure of this utility model;
[0022] Figure 5 This is a cross-sectional view of the clamping block structure of this utility model;
[0023] Figure 6 This is a working reference diagram of the clamping block structure of this utility model.
[0024] In the diagram: 1. Workbench, 11. Through slot, 12. Electric actuator, 2. Slide bar, 21. Pressure sensing unit, 3. Clamping block, 31. Slot, 32. Slide groove, 33. Electromagnet module, 34. Spring, 35. Locking block, 4. Clamping ring, 41. Insert bar, 5. Air ring, 6. Ball. Detailed Implementation
[0025] This utility model embodiment provides a planar fixture stability detection mechanism, such as... Figure 1-6 As shown, the device includes a worktable 1, multiple clamping blocks 3, and clamping rings 4. The multiple clamping blocks 3 are slidably fitted on the top of the worktable 1 and are arranged in a ring. The clamping rings 4 are located above the clamping blocks 3, and multiple inserts 41 are welded to the outside of the clamping rings 4. The worktable 1 and clamping rings 4 are horizontal, while the clamping blocks 3 are vertical.
[0026] Multiple inserts 41 correspond one-to-one with multiple clamps 3. The end of the insert 41 away from the clamp ring 4 is bent vertically downward and fixedly inserted into the top of the clamp 3.
[0027] A gas ring 5 is fixedly installed at the bottom of the clamp ring 4. The wheel hub is held by the clamp block 3 and the clamp ring 4. After the gas ring 5 is inflated, it contacts the top of the wheel hub.
[0028] A sphere 6 is welded to the top of the workbench 1. The sphere 6 serves as the center point. The clamping block 3, clamping ring 4, and sphere 6 are arranged in concentric circles. The top of the sphere 6 abuts against the center point of the wheel hub.
[0029] Working principle: The center of the wheel hub is placed on the sphere 6. Then, multiple clamping blocks 3 are driven to move closer together, while the clamping ring 4 is placed above the wheel hub. If the wheel hub is tilted, some clamping blocks 3 will not move to the preset position, and the corresponding insert 41 cannot be inserted into the clamping block 3. Next, air is inflated into the air ring 5. After the air ring 5 inflates, it contacts the wheel hub and presses down on the tilted end of the wheel hub, thus ensuring that the wheel hub is in a horizontal state. This allows the inserts 41 at each location to be inserted into the clamping blocks 3.
[0030] The top of the clamping block 3 is provided with a slot 31 that is compatible with the insert 41. The inner side of the clamping block 3 is provided with a sliding groove 32. An electromagnet module 33 is fixedly installed in the sliding groove 32. An iron locking block 35 is slidably fitted in the sliding groove 32. A spring 34 is fixedly installed between the electromagnet module 33 and the locking block 35. One end of the locking block 35 extends out of the electromagnet module 33.
[0031] It also includes a slide bar 2. Through grooves 11 are arranged in a ring around the sphere 6 on the top of the worktable 1. The slide bar 2 slides within the through grooves 11. The top of the slide bar 2 is welded to the clamping block 3, and a pressure sensing unit 21 is fixedly installed on the top of the slide bar 2. The wheel hub contacts each pressure sensing unit 21, and the pressure sensing unit 21 feeds back the measured values to the computer terminal. When the wheel hub is correctly installed and fixed, the values measured by each pressure sensing unit 21 are the same. Workers can further determine whether the wheel hub is level based on the information fed back by the pressure sensing units 21, improving the accuracy of the inspection.
[0032] Before operation, the electromagnet module 33 is kept energized to generate a magnetic field. Under the influence of this magnetic force, the locking block 35 is drawn into the slide groove 32. Once the wheel hub is installed and secured, the electromagnet module 33 is de-energized, and the spring 34 unfolds, pushing the locking block 35 out. (See attached diagram.) Figure 1 , 5 6. There is an outer edge on the outside of the wheel hub. The locking block 34 and the top of the slide rod 2 lock the outer edge to strengthen the fixation of the wheel hub.
[0033] An electric actuator 12 is fixedly installed at the bottom of the workbench 1, and the movable end of the electric actuator 12 is welded to the lower end of the slide bar 2.
[0034] In summary, this planar fixture stability testing mechanism consists of a worktable 1, a slide bar 2, a clamping block 3, a clamping ring 4, an air ring 5, and a ball 6. The clamping block 3, clamping ring 4, and ball 6 work together to fix the wheel hub. The air ring 6 inflates and presses down on the wheel hub, pressing down the tilted end to keep the wheel hub level. Then, the electromagnet module 33, spring 34, and locking block 35 work together to lock the outer edge of the wheel hub, achieving a reinforcement effect. A pressure sensing unit 21 is included to improve testing accuracy. This prevents the wheel hub from being tilted, which could affect the drilling effect.
[0035] 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 planar fixture stability detection mechanism, characterized in that: It includes a workbench (1), multiple clamping blocks (3), and a clamping ring (4). The multiple clamping blocks (3) are slidably fitted on the top of the workbench (1). The multiple clamping blocks (3) are arranged in a ring. The clamping ring (4) is located above the clamping blocks (3). Multiple inserts (41) are connected to the outside of the clamping ring (4). Multiple inserts (41) correspond one-to-one with multiple clamps (3). The end of the insert (41) away from the clamp (4) is bent vertically downward and inserted into the top of the clamp (3). The bottom of the clamping ring (4) is equipped with an air ring (5), which is used to clamp the wheel hub by the clamping block (3) and the clamping ring (4). After the air ring (5) is inflated, it contacts the top of the wheel hub. The top of the workbench (1) is connected to a sphere (6), with the sphere (6) serving as the center point. The clamping block (3), clamping ring (4), and sphere (6) are arranged in concentric circles, and the top of the sphere (6) abuts against the center point of the wheel hub.
2. The planar fixture stability detection mechanism according to claim 1, characterized in that: The clamp (3) has a slot (31) at the top that is compatible with the insert (41). The clamp (3) has a sliding groove (32) on the inner side. An electromagnet module (33) is connected in the sliding groove (32). An iron locking block (35) is slidably fitted in the sliding groove (32). A spring (34) is connected between the electromagnet module (33) and the locking block (35). One end of the locking block (35) extends to the outside of the electromagnet module (33).
3. The planar fixture stability detection mechanism according to claim 2, characterized in that: It also includes a slide bar (2), and the top of the worktable (1) is provided with through grooves (11) arranged in a ring around the sphere (6). The slide bar (2) slides in conjunction with the through grooves (11), the top of the slide bar (2) is connected to the clamping block (3), and a pressure sensing unit (21) is installed on the top of the slide bar (2).
4. The planar fixture stability detection mechanism according to claim 3, characterized in that: The bottom of the workbench (1) is connected to an electric actuator (12), and the movable end of the electric actuator (12) is connected to the lower end of the slide bar (2).