Floating positioning support device

Abstract

The utility model discloses a kind of floating positioning support devices, it includes fixed seat, linear drive device, top column, float column, limit shaft and spring, the fixed seat is equipped with vertical cavity and horizontal cavity, the horizontal cavity with the middle part of the vertical cavity is communicated, the float column is movably located on the vertical cavity, the spring is located at the bottom of the vertical cavity;The lower part of the float column is equipped with floating limit surface towards the position of the horizontal cavity, the linear drive device is set on the fixed seat, the top column is movably located in the horizontal cavity, and is connected with the driving rod of the linear drive device, the driving rod of the linear drive device is pushed out and pushes top column and presses on the floating limit surface, better supporting effect is achieved, can make workpiece in natural balance state, avoid deformation, shaking or displacement caused by uneven stress and other problems, improve processing precision and product quality, and operation is simple, convenient, facilitate to improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of support technology, specifically to a floating positioning support device. Background Technology

[0002] In industrial production fields such as machining and assembly, accurate and stable support and clamping of workpieces is a crucial step in ensuring machining precision and product quality. Traditional workpiece support and clamping methods mainly rely on fixed support structures. These structures typically have pre-set fixed heights and positions, which presents many limitations when dealing with workpieces of different shapes, sizes, and weights.

[0003] For irregularly shaped workpieces, due to the uneven distribution of gravity in different parts, it is difficult to keep the workpiece in a natural equilibrium state using a fixed support structure. For example, for some workpieces with complex curved surfaces or irregular shapes, using a fixed-height support may cause some parts of the workpiece to be subjected to excessive force and deform, while other parts may not be adequately supported, affecting machining accuracy, or even causing the workpiece to shake or shift during machining, resulting in machining defects or product scrap.

[0004] To meet the requirements of stroke and workpiece shape, a floating support cylinder has been introduced to the market. For example, the utility model patent entitled "A Floating Support Cylinder" (publication number "CN221647324U") discloses a floating support cylinder, which includes a shell and a locking mechanism installed inside the shell. The locking mechanism has a support mechanism for supporting the workpiece installed inside it. The locking mechanism includes a base assembly and a locking assembly. Both the base assembly and the locking assembly are located inside the shell, with the base assembly located below the locking assembly. The locking assembly includes a liquid chamber, a locking cylinder, a first return spring, a conical piston, a steel ball, a first washer, a second washer, a positioning sleeve, and a retaining ring. The inner wall of the locking cylinder is slidably connected to the support mechanism. The lower side of the outer wall of the locking cylinder is fitted with the first return spring. The top of the locking cylinder is provided with the second washer, and the top of the second washer is provided with the positioning sleeve. The inner wall of the positioning sleeve is slidably connected to the support mechanism, and the top and outer wall of the positioning sleeve are both in contact with the outer shell. The conical piston is fitted outside the locking cylinder. The middle inner wall of the conical piston is fixedly connected with the first washer and the retaining ring. A steel ball is provided between the conical piston and the locking cylinder. The steel ball is located between the second washer and the first washer. A liquid chamber is formed between the outer wall of the conical piston and the inner wall of the outer shell, and an air chamber is formed between the inner wall of the conical piston and the outer wall of the locking cylinder. The air chamber is connected to an air passage. In use, liquid is supplied to the interior through the main channel of the base assembly of the locking mechanism. The liquid pushes the first piston upward under the limit of the upper base, and the first piston pushes the fixing nut upward. The second return spring is compressed and deformed under the push of the fixing nut, and the second return spring pushes the positioning nut and the second piston upward until the first piston reaches its maximum stroke or the top of the adjusting bolt contacts the workpiece. When the stroke needs to be adjusted, the pin is pulled out, the adjusting bolt is rotated to the required height, and then the pin is inserted into the upper and lower pin slots to complete the stroke adjustment. During reset, the liquid is withdrawn from the main channel, the second return spring resets, and both the first and second pistons move downward to complete the reset. Although this solution can meet different stroke requirements, it has a complex structure, is inconvenient to operate, has low work efficiency, and requires manual intervention in the adjustment process. It cannot achieve automatic and precise support adjustment, and it is difficult to guarantee the accuracy and consistency of the adjustment. Utility Model Content

[0005] To address the aforementioned shortcomings, the purpose of this utility model is to provide a floating positioning support device with a reasonable structural design and good positioning effect.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0007] A floating positioning support device includes a fixed base, a linear drive device, a top column, a float, a limiting shaft, and a spring. The fixed base has a vertical cavity and a horizontal cavity, the horizontal cavity communicating with the middle of the vertical cavity. The float is movably located on the vertical cavity, and the spring is located at the bottom of the vertical cavity and abuts against the lower end of the float. The upper part of the float has a radially elongated hole, the limiting shaft passes radially through the radially elongated hole and is fixed on the fixed base, and the lower part of the float has a floating limiting surface facing the horizontal cavity. The linear drive device is mounted on the fixed base, the top column is movably located in the horizontal cavity and connected to the drive rod of the linear drive device, the drive rod of the linear drive device extending out to push the top column against the floating limiting surface.

[0008] In a preferred embodiment of this invention, the floating limiting surface is an inclined surface with an inclination angle of 16-20 degrees. A reasonable range of inclination angles allows for more precise alignment between the top column and the floating limiting surface, enhancing the restriction effect on the vertical movement of the floating column.

[0009] As a preferred embodiment of this utility model, the top column is cylindrical, and the right-angled part of the top column presses against the floating restriction surface, which has a good matching effect and effectively restricts the floating of the column.

[0010] In a preferred embodiment of this invention, the lower end face of the float is provided with a spring positioning boss. The spring positioning boss provides positioning for the spring, ensuring quick and accurate installation.

[0011] In a preferred embodiment of this invention, the bottom surface of the fixing base is provided with a thick base plate that closes the opening of the vertical cavity. This prevents external debris from entering the vertical cavity and ensures the normal operation of the spring.

[0012] As a preferred embodiment of this utility model, the thick base plate is provided with an extension extending to the position below the linear drive device, and the extension is provided with mounting holes to improve the installation stability of the device and ensure processing accuracy.

[0013] In a preferred embodiment of this invention, the upper part of the float is provided with a sealing groove, and a sealing ring is fitted into the sealing groove. This prevents external dust, liquids, etc., from entering the vertical cavity, resulting in a good sealing effect.

[0014] In a preferred embodiment of this invention, a tray is provided at the upper end of the float. The tray provides a flatter and more stable placement surface for the workpiece.

[0015] In a preferred embodiment of this invention, the linear drive device is a cylinder, a hydraulic cylinder, or a linear motor. The appropriate device can be flexibly selected based on different application scenarios and load requirements.

[0016] The beneficial effects of this utility model are as follows: The structure of this utility model is reasonably designed. During use, the workpiece is placed on the floating positioning support device. Under the combined action of the workpiece's weight and the shape of the supported part, the float compresses the spring and descends to the corresponding height, allowing the workpiece to be placed in a natural state for support and clamping. Then, the drive rod of the linear drive device extends and pushes the top column against the floating restriction surface, preventing the float from floating up and down. That is, the workpiece will not move downwards when subjected to force during subsequent processing; and when the workpiece stops processing and the force is released, the float will not rebound upwards, achieving a better support effect. This allows the workpiece to be in a natural equilibrium state, avoiding problems such as deformation, shaking, or displacement caused by uneven force, improving processing accuracy and product quality. Furthermore, it is simple and convenient to operate, which helps improve work efficiency.

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0020] Figure 3 This is an exploded structural diagram of the present invention.

[0021] Figure 4 This is a schematic diagram of the top column in this utility model. Detailed Implementation

[0022] See the example. Figures 1 to 4 This embodiment provides a floating positioning support device, which includes a fixed base 1, a linear drive device 2, a top column 3, a float column 4, a limiting shaft 5, and a spring 6.

[0023] The fixed base 1 is provided with a vertical cavity 11 and a horizontal cavity 12. The vertical cavity 11 extends vertically through the entire fixed base 1. The horizontal cavity 12 is horizontally arranged on the fixed base 1 and communicates with the middle part of the vertical cavity 11.

[0024] The float 4 is movably positioned on the vertical cavity 11, and the spring 6 is located at the bottom of the vertical cavity 11, abutting against the lower end of the float 4. Preferably, a spring positioning boss 41 is provided on the lower end face of the float 4. The spring positioning boss 41 can provide positioning for the spring 6, ensuring that the spring 6 is installed quickly and accurately, and ensuring that the spring 6 will not affect the support effect due to positional displacement during operation, thereby enhancing the reliability of the device.

[0025] The upper part of the float 4 is provided with a radially elongated hole 42. The limiting shaft 5 passes radially through the radially elongated hole 42 and is fixed on the fixed base 1, which is used to limit the float 4 to only float up and down and not rotate. Preferably, a sealing groove 43 is provided on the upper part of the float 4, and a sealing ring 9 is fitted on the sealing groove 43. This can prevent external dust, liquids, etc. from entering the vertical cavity 11, avoid damage to the movement of the float 4 and components such as the spring 6, and ensure the cleanliness and normal operation of the device. A tray 8 can also be provided on the upper end of the float 4. The tray 8 can provide a flatter and more stable placement surface for the workpiece, so that the contact between the workpiece and the float 4 is more sufficient and uniform, and the weight and supporting force of the workpiece can be better transferred to the float 4, improving the stability of the workpiece support and further ensuring the processing accuracy.

[0026] A floating limiting surface 44 is provided at the lower part of the float 4 facing the horizontal cavity 12. The linear drive device 2 is mounted on the fixed base 1. The top column 3 is movably located within the horizontal cavity 12 and is connected to the drive rod of the linear drive device 2. The drive rod of the linear drive device 2 extends and pushes the top column 3 to press against the floating limiting surface 44. In this embodiment, the linear drive device 2 is preferably a cylinder, which is simple and convenient to operate. In other embodiments, the linear drive device 2 can also be a hydraulic cylinder or a linear motor. It can be flexibly selected according to different usage scenarios, load requirements, etc. During operation, the cylinder's drive rod drives the top column 3 to move linearly within the horizontal cavity 12, thereby realizing the function of pressing against the floating limiting surface 44 to limit the float 4's floating.

[0027] In this embodiment, the floating limiting surface 44 is an inclined surface, and the inclination angle α of the inclined surface is preferably 16-20 degrees, and most preferably 18 degrees. A reasonable range of inclination angles allows for more precise matching between the top column 3 and the floating limiting surface 44, enhancing the restriction effect on the vertical movement of the float 4, and further improving the stability and reliability of the support device. The top column 3 is cylindrical, and the right-angled portion of the top column 3 presses against the floating limiting surface 44, generating a lateral component force that compresses and locks the float 4 in the vertical direction, effectively restricting the movement of the float 4.

[0028] A thick base plate 7 is provided on the bottom surface of the fixed base 1 to close the opening of the vertical cavity 11. This prevents external debris from entering the vertical cavity 11, avoiding interference with the normal movement of the float 4 within the vertical cavity 11 and the normal operation of the spring 6. It also provides a more stable bottom support for the entire device. To improve installation stability, an extension portion extending to the lower part of the linear drive device 2 is provided on the thick base plate 7, and the extension portion has mounting holes. These mounting holes allow the device to be more securely installed on other equipment or workbenches, enhancing the connection strength between the entire floating positioning support device and the external structure, improving the installation stability of the device, reducing errors caused by device shaking during workpiece processing, and ensuring processing accuracy.

[0029] Before use, several floating positioning support devices of this utility model are evenly distributed on the positioning base. They can be arranged in a matrix or according to the shape of the workpiece to be supported, so that multiple floating positioning support devices can support the workpiece simultaneously. During use, the workpiece is placed on the floating positioning support device. Under the combined action of the workpiece's weight and the shape of the supported part, the floats 4 of each floating positioning support device compress the springs 6 and descend to the corresponding height, allowing the workpiece to be placed in a natural state for support and clamping. Then, the drive rod of the linear drive device 2 extends and pushes the top column 3 against the floating restriction surface 44, preventing the floats 4 from floating up and down, thus placing the workpiece in a natural equilibrium state. At this point, it can be used in conjunction with pneumatic grippers to clamp the workpiece, achieving good positioning effect and minimizing workpiece shaking or displacement, thus facilitating subsequent processing and improving processing accuracy and product quality.

[0030] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model. Other devices that are the same as or similar to these devices are all within the protection scope of this utility model.

Claims

1. A floating positioning support device, comprising a fixed base, characterized in that, It also includes a linear drive device, a top column, a float, a limiting shaft, and a spring. The fixed base has a vertical cavity and a horizontal cavity, with the horizontal cavity communicating with the middle of the vertical cavity. The float is movably located on the vertical cavity, and the spring is located at the bottom of the vertical cavity and abuts against the lower end of the float. The upper part of the float has a radially elongated hole, and the limiting shaft passes radially through the radially elongated hole and is fixed on the fixed base. The lower part of the float has a floating limiting surface facing the horizontal cavity. The linear drive device is mounted on the fixed base, and the top column is movably located in the horizontal cavity and connected to the drive rod of the linear drive device. The drive rod of the linear drive device extends out to push the top column against the floating limiting surface.

2. The floating positioning support device according to claim 1, characterized in that: The floating limiting surface is an inclined surface with an inclination angle of 16-20 degrees.

3. The floating positioning support device according to claim 2, characterized in that: The top post is cylindrical, and the right-angled portion of the top post presses against the floating restraint surface.

4. The floating positioning support device according to claim 1, characterized in that: The lower end face of the float is provided with a spring positioning boss.

5. The floating positioning support device according to claim 4, characterized in that: The bottom surface of the fixed base is provided with a thick base plate that closes the opening of the vertical cavity.

6. The floating positioning support device according to claim 5, characterized in that: The thick base plate has an extension that extends to the position below the linear drive device, and the extension has mounting holes.

7. The floating positioning support device according to claim 1, characterized in that: The upper part of the float is provided with a sealing groove, and a sealing ring is fitted into the sealing groove.

8. The floating positioning support device according to any one of claims 1-7, characterized in that: A tray is provided at the upper end of the float.

9. The floating positioning support device according to any one of claims 1-7, characterized in that: The linear drive device is a cylinder, a hydraulic cylinder, or a linear motor.

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