Multidirectional constant-force floating device

Abstract

The utility model relates to the technical field of automation equipment, in particular to a multidirectional constant-force floating device which comprises a seat body, a plurality of floating bodies are installed on the side portion of the seat body, each floating body is composed of a cylinder body, a piston body and a sleeve body, and a first cavity, a second cavity and a third cavity are formed in each floating body. The seat body is provided with a first air inlet and a second air inlet. The floating bodies can be connected with the grinding heads, workpieces or grinding faces can be clamped in the circumferential direction of the base body, so that multiple workpieces or working planes can be ground at the same time, the grinding efficiency is greatly improved, the floating bodies supply air through the same set of first air holes and second air holes, the grinding force of the grinding heads is controlled in a centralized mode, and the grinding efficiency is improved. And the structure compactness and the space utilization rate are good.

Description

Technical Field

[0001] The utility model belongs to the technical field of automation equipment, and in particular relates to a multi-directional constant force floating device. Background Art

[0002] In industrial production, grinding is a very common process. However, during the grinding process, it is necessary to control the grinding force by controlling the pressure between the grinding head and the workpiece surface. Different workpieces and processing parts require different grinding forces, and the angles of the grinding planes can also vary greatly.

[0003] Patent document CN2017108119737 discloses a constant force floating system, which includes a controller, a constant force floating unit, an electric servo valve, and a force sensor. The constant force floating unit can realize constant force operation, and the force sensor can detect the magnitude of the constant force and transmit it to the controller. The controller actively adjusts or makes decisions based on the sensor information to control the electric servo valve to achieve flow control input to the constant force floating unit to adjust the magnitude of the constant force. Although the constant force floating system in this comparative document can change the position of the grinding head according to the form of air pressure to control the magnitude of the force during the grinding process, it cannot grind multiple workpieces or planes at the same time, and the grinding efficiency is low.

[0004] The disclosure of the above background technology content is only used to assist in understanding the utility model concept and technical solution of the utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above content has been disclosed on the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of this application. Utility Model Content

[0005] The purpose of the utility model is to provide a multi-directional constant force floating device, so as to overcome the defect of low grinding efficiency when the existing constant force floating device is connected to a grinding head for grinding.

[0006] To achieve the above-mentioned purpose, the utility model provides a multi-directional constant force floating device, including a base body and a floating body, the number of the floating bodies is more than two, the floating body includes a cylinder body and a piston body, one end of the cylinder body is fixedly connected to the side of the base body, one end of the piston body is slidably inserted into the other end of the cylinder body and forms a first cavity with the side of the base body, the other end of the piston body is provided with a sleeve body, the sleeve body covers the other end of the cylinder body and forms a second cavity; one end of the base body is provided with a first air hole and a second air hole, the first air hole is connected to each of the first cavities at the same time, the second air hole is connected to each of the second cavities at the same time, and the other end of the base body is provided with a connecting plate.

[0007] Preferably, in the above technical solution, a plurality of bearing grooves are provided in the cylinder body, the bearing grooves are parallel to the movement direction of the piston body, balls are provided in the bearing grooves, and the balls are in rolling contact with the sides of the piston body.

[0008] Preferably, in the above technical solution, removable bearing covers are respectively provided at both ends of the cylinder body, a U-shaped groove is provided inside the bearing cover, and the two ends of the U-shaped groove are respectively docked with the ends of the two bearing grooves, and the ball can circulate and roll between the bearing groove and the U-shaped groove.

[0009] Preferably, in the above technical solution, an inner cavity is provided in the piston body, and one end of the inner cavity extends outward from one end of the piston body and is interconnected with the first cavity.

[0010] Preferably, in the above technical solution, a cone is provided at the other end of the inner cavity, the axis of the cone is consistent with the movement direction of the piston body, an elastic arm is provided on the side of the seat body, one end of the elastic arm extends into the inner cavity and is provided with a roller, the roller is in rolling contact with the conical surface of the cone, and a strain gauge is provided on the elastic arm.

[0011] Preferably, in the above technical solution, an air isolation ring is provided on the outer periphery of the other end of the cylinder body, a connecting plate is connected between the other end of the piston body and one end of the sleeve body, a third cavity is formed between the air isolation ring and the connecting plate, and the second cavity is located between the other end of the sleeve body and the air isolation ring.

[0012] Preferably, in the above technical solution, a dust cover is connected between the sleeve and the cylinder body, a third air duct is provided in the sleeve body, the third air duct connects the interior of the dust cover with the third cavity, and an air hole is provided on the periphery of the cylinder body, the air hole is connected with the interior of the dust cover through a fourth air duct.

[0013] Preferably, in the above technical solution, the number of the air holes is more than two, and detachable filter cotton is provided at the air holes.

[0014] Preferably, in the above technical solution, a first main air duct and several first secondary air ducts are provided on the seat body, one end of each of the first secondary air ducts is respectively connected to a different first cavity, the other end of each of the first secondary air ducts is simultaneously connected to one end of the first main air duct, and the other end of the first main air duct is connected to the first air hole.

[0015] Preferably, in the above technical solution, a second main air channel and several second secondary air channels are provided on the seat body, and several side air channels are provided in the cylinder body, one end of the side air channel is connected to the second cavity, the other end of the side air channel is connected to one end of the second secondary air channel, the other end of each of the second secondary air channels is simultaneously connected to one end of the second main air channel, and the other end of the second main air channel is connected to the second air hole.

[0016] Compared with the existing technology, the utility model has the following beneficial effects:

[0017] 1. The multi-directional constant force floating device in the present invention is provided with more than two floating bodies, which can be connected to the grinding head, and the workpiece or grinding surface can be clamped along the circumference of the base body, so that multiple workpieces or processing surfaces can be ground at the same time, which greatly improves the grinding efficiency, and each floating body supplies air through the same set of first air holes and second air holes, so that the grinding force of each grinding head is centrally controlled, and has good structural compactness and space utilization.

[0018] 2. The bearing groove in the cylinder body and the U-shaped groove in the bearing cover in the utility model form a closed-loop groove body, and balls are installed in the groove body. When the piston body moves relative to the cylinder body, the balls can form a circulating linear bearing, thereby reducing the damping between the piston body and the cylinder body. The circulation of the balls can also prevent the phenomenon of jamming during movement and extend the service life of the balls.

[0019] 3. The utility model is also provided with a third cavity, which can inhale and exhaust air to the outside when the piston body drives the sleeve body to move, thereby reducing the air resistance when the piston body moves, and making the air volume in the first cavity and the second cavity more accurately controlled.

[0020] 4. The piston body in the present invention is provided with an inner cavity, which not only becomes a part of the first cavity, providing a larger space for the first cavity to make the air pressure more stable, but also can install the cone and make way for the elastic arm, thereby making the structure more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional view of the multi-directional constant force floating device of the utility model.

[0022] Figure 2 This is an exploded view of the multi-directional constant force floating device.

[0023] Figure 3 It is a cross-sectional view of the floating body.

[0024] Figure 4 It is a partial cross-sectional view of a multi-directional constant force floating device.

[0025] Figure 5 It is a cross-sectional view of the multi-directional constant force floating device along the axis of the first secondary airway.

[0026] Figure 6 It is a cross-sectional view of the multi-directional constant force floating device along the axis of the second secondary airway.

[0027] Description of main reference numerals:

[0028] 100 - seat body, 110 - first tracheal connector, 120 - second tracheal connector, 130 - first main airway, 140 - first secondary airway, 150 - second main airway, 160 - second secondary airway;

[0029] 200-cylinder body, 210-bearing groove, 230-bearing cover, 240-U-shaped groove, 250-air separator ring, 260-air hole, 270-fourth air channel, 280-filter cotton, 290-side air channel;

[0030] 300-piston body, 310-first cavity, 320-inner cavity, 330-cone, 340-elastic arm, 350-roller;

[0031] 400-housing, 410-second cavity, 420-connecting plate, 430-third cavity, 440-third airway;

[0032] 500-connection plate;

[0033] 600-Dust cover. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "top", "bottom", "top surface", "bottom surface", "inside", "outside", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0036] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The terms "first," "second," and "third" are used solely for descriptive purposes and to distinguish technical features. They are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0037] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. The following describes an embodiment of the present invention based on its overall structure.

[0038] like Figures 1 to 6 As shown, the multi-directional constant force floating device in this embodiment includes: a seat body 100, a first air hole, a second air hole, a first main air channel 130, a first secondary air channel 140, a second main air channel 150, a second secondary air channel 160, a cylinder body 200, a bearing groove 210, a ball, a bearing cover 230, a U-shaped groove 240, an air separator ring 250, an air hole 260, a fourth air channel 270, filter cotton 280, a side air channel 290, a piston body 300, a first cavity 310, an inner cavity 320, a cone 330, an elastic arm 340, a roller 350, a sleeve body 400, a second cavity 410, a connecting plate 420, a third cavity 430, a third air channel 440, a connecting plate 500, and a dust cover 600.

[0039] A connecting plate 500 is provided at one end of the base body 100, and the connecting plate 500 is used to connect to the spindle head of a machine tool or a machine arm. A first air hole and a second air hole are provided at the other end of the base body 100, and a first air pipe joint 110 and a second air pipe joint 120 are respectively installed on the first air hole and the second air hole. The side of the base body 100 is provided with three mounting surfaces, and the three mounting surfaces are evenly distributed around the center of the base body 100. The floating body is composed of a cylinder body 200 and a piston body 300. One end of the cylinder body 200 is fixedly connected to the mounting surface, and one end of the piston body 300 is slidably inserted into the other end of the cylinder body 200 and forms a first cavity 310 with the side of the base body 100. A connecting plate 420 is installed at the other end of the piston body 300, and one end of the sleeve body 400 is fixedly installed with the connecting plate 420 and the sleeve body 400 covers the outside of the other end of the cylinder body 200. An air isolation ring 250 is fixedly installed on the periphery of the other end of the cylinder body 200. The sleeve body 4 A second cavity 410 is formed between the other end of 00 and the air isolation ring 250, and a third cavity 430 is formed between the air isolation ring 250 and the connecting plate 420. When air is inflated into the first cavity 310, the piston body 300 can be pushed to drive the connecting plate 420 to move away from the base body 100. When air is inflated into the second cavity 410, the pressure in the second cavity 410 increases, thereby pushing the sleeve body 400 to move toward the base body 100, thereby driving the piston body 300 and the connecting plate 420 to move toward the base body 100.

[0040] Furthermore, a dust cover 600 is installed between the sleeve 400 and the cylinder 200. A third air passage 440 is provided within the sleeve 400, connecting the interior of the dust cover 600 with the third cavity 430. Air holes 260 are provided on the outer periphery of the cylinder 200, connecting the air holes 260 with the interior of the dust cover 600 via a fourth air passage 270. There are two or more air holes 260, each of which is equipped with a removable filter 280. When the piston body 300 moves away from the base 100, the volume of the third cavity 430 increases, causing the air holes 260 to draw air inward. When the piston body 300 moves toward the base 100, the volume of the third cavity 430 decreases, causing the air holes 260 to release air outward. This reduces air resistance during the floating of the piston body 300, allowing for more precise control.

[0041] In addition, a first main air channel 130 and three first secondary air channels 140 are provided on the seat body 100, one end of each first secondary air channel 140 is communicated with a different first cavity 310 respectively, and the other end of each first secondary air channel 140 is simultaneously communicated with one end of the first main air channel 130, and the other end of the first main air channel 130 is communicated with the first air hole, and the center lines of the first main air channel 130 and the first secondary air channel 140 are perpendicular to each other; a second main air channel 150 and three second secondary air channels 160 are provided on the seat body 100, and a plurality of side air channels 290 are provided in the cylinder body 200, one end of the side air channel 290 is communicated with the second cavity 410, and the other end of the side air channel 290 is communicated with one end of the second secondary air channel 160, the other end of each second secondary air channel 160 is simultaneously communicated with one end of the second main air channel 150, and the other end of the second main air channel 150 is communicated with the second air hole.

[0042] Furthermore, a plurality of bearing grooves 210 are provided in the cylinder body 200, and the bearing grooves 210 are parallel to the movement direction of the piston body 300. Balls are installed in the bearing grooves 210, and the balls are in rolling contact with the sides of the piston body 300; removable bearing covers 230 are provided at both ends of the cylinder body 200, and U-shaped grooves 240 are provided in the bearing covers 230. The two ends of the U-shaped groove 240 are respectively connected to the ends of the two bearing grooves 210, thereby forming a closed long O-shaped groove structure. When the piston body 300 moves back and forth, the balls can circulate and roll between the bearing grooves 210 and the U-shaped grooves 240, thereby preventing the balls from getting stuck.

[0043] An inner cavity 320 is provided in the piston body 300, one end of the inner cavity 320 extends outward from one end of the piston body 300 and is interconnected with the first cavity 310, and a cone 330 is provided at the other end of the inner cavity 320, and the axis of the cone 330 is consistent with the movement direction of the piston body 300. An elastic arm 340 is installed on the side of the base body 100, and one end of the elastic arm 340 extends into the inner cavity 320 and is provided with a roller 350. The roller 350 is in rolling contact with the conical surface of the cone 330, and a strain gauge is installed on the elastic arm 340. When the piston body 300 moves, the roller 350 can also roll along the conical surface of the cone 330, thereby changing the deformation of the elastic arm 340 and the strain gauge. The position movement of the piston body 300 is calculated based on the change of the electrical signal of the strain gauge combined with the corresponding algorithm.

[0044] To sum up, when the multi-directional constant force floating device in this embodiment performs grinding operations, the floating body can be connected to the grinding head, the workpiece or grinding surface can be clamped along the circumference of the seat body, and the piston body first retracts inward. After the seat body is in place, the piston body extends to the four sides so that the grinding head contacts the processing surface, so that multiple workpieces or processing planes can be ground at the same time, which greatly improves the grinding efficiency. In addition, each floating body supplies air through the same set of first air holes and second air holes, so that the grinding force of each grinding head can be centrally controlled, and it has good structural compactness and space utilization.

[0045] The foregoing descriptions of specific exemplary embodiments of the present invention are for the purpose of illustration and description. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials or characteristics described can be combined in an appropriate manner in any one or more embodiments or examples. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can make modifications, substitutions, variations and various different choices and changes to the embodiments without creative contribution as needed after reading this specification without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A multi-directional constant force floating device, comprising a base and a floating body, characterized in that: There are more than two floating bodies, and the floating bodies include a cylinder body and a piston body. One end of the cylinder body is fixedly connected to the side of the base body, and one end of the piston body is slidably inserted into the other end of the cylinder body and forms a first cavity with the side of the base body. The other end of the piston body is provided with a sleeve body, and the sleeve body covers the other end of the cylinder body and forms a second cavity; one end of the base body is provided with a first air hole and a second air hole, the first air hole is connected to each of the first cavities at the same time, and the second air hole is connected to each of the second cavities at the same time, and the other end of the base body is provided with a connecting disk.

2. The multi-directional constant force floating device according to claim 1, characterized in that: A plurality of bearing grooves are provided in the cylinder body, and the bearing grooves are parallel to the movement direction of the piston body. Balls are provided in the bearing grooves, and the balls are in rolling contact with the side of the piston body.

3. The multi-directional constant force floating device according to claim 2, characterized in that: Removable bearing covers are provided at both ends of the cylinder body, and a U-shaped groove is provided in the bearing cover. The two ends of the U-shaped groove are respectively connected to the ends of the two bearing grooves, and the ball can circulate and roll between the bearing groove and the U-shaped groove.

4. The multi-directional constant force floating device according to claim 1, characterized in that: An inner cavity is provided in the piston body, and one end of the inner cavity extends outward from one end of the piston body and is interconnected with the first cavity.

5. The multi-directional constant force floating device according to claim 4, characterized in that: A cone is provided at the other end of the inner cavity, and the axis of the cone is consistent with the movement direction of the piston body. An elastic arm is provided on the side of the seat body, and one end of the elastic arm extends into the inner cavity and is provided with a roller. The roller is in rolling contact with the conical surface of the cone, and a strain gauge is provided on the elastic arm.

6. The multi-directional constant force floating device according to claim 1, characterized in that: An air isolation ring is provided on the outer periphery of the other end of the cylinder body, and a connecting plate is connected between the other end of the piston body and one end of the sleeve body. A third cavity is formed between the air isolation ring and the connecting plate, and the second cavity is located between the other end of the sleeve body and the air isolation ring.

7. The multi-directional constant force floating device according to claim 6, characterized in that: A dust cover is connected between the sleeve and the cylinder body, a third air channel is provided in the sleeve body, the third air channel connects the interior of the dust cover with the third cavity, and an air hole is provided on the periphery of the cylinder body, the air hole is connected with the interior of the dust cover through a fourth air channel.

8. The multi-directional constant force floating device according to claim 7, characterized in that: The number of the air holes is more than two, and detachable filter cotton is provided at the air holes.

9. The multi-directional constant force floating device according to claim 1, characterized in that: The seat body is provided with a first main air channel and several first secondary air channels, one end of each of the first secondary air channels is connected to a different first cavity respectively, the other end of each of the first secondary air channels is simultaneously connected to one end of the first main air channel, and the other end of the first main air channel is connected to the first air hole.

10. The multi-directional constant force floating device according to claim 1, characterized in that: A second main air channel and several second secondary air channels are provided on the seat body, and several side air channels are provided in the cylinder body. One end of the side air channel is connected to the second cavity, and the other end of the side air channel is connected to one end of the second secondary air channel. The other end of each second secondary air channel is also connected to one end of the second main air channel, and the other end of the second main air channel is connected to the second air hole.

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