Axial constant-force floating device

Abstract

The utility model discloses an axial constant force floating device which comprises a support, an air cylinder, a floating plate, a linear guide rail and a supporting module, the air cylinder is installed on the support, the floating plate is connected with the output end of the air cylinder, the linear guide rail is parallel to the air cylinder and arranged on the support, and the supporting module is connected with the floating plate. The supporting module is installed on the linear guide rail in a sliding mode, connected with the floating plate and used for bearing a grinding main shaft. The linear guide rail is in sliding fit with the supporting module, so that the bearing capacity of the constant-force floating device is improved, the grinding constant force of the electric spindle can be kept, and the machining stability is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of automated grinding, and in particular to an axial constant force floating device. Background Technology

[0002] In the field of automated grinding, the shape and size of the workpiece surface often vary. During the grinding process, a constant force floating device is required to ensure the processing accuracy and stability.

[0003] In the field of robotic grinding, electric spindles are often used to drive grinding tools. This requires maintaining a constant force floating on the electric spindle. However, the current constant force floating devices can only support relatively small grinding tools, which cannot guarantee the stability of the electric spindle during processing. Summary of the Invention

[0004] In view of the above-mentioned problems of existing constant force floating devices, the present invention aims to provide an axial constant force floating device with high grinding stability, simple structure and high efficiency.

[0005] The specific technical solution is as follows:

[0006] An axial constant force floating device includes:

[0007] Support;

[0008] A cylinder, which is mounted on the support;

[0009] A floating plate, which is connected to the output end of the cylinder;

[0010] A linear guide rail is arranged parallel to the cylinder and mounted on the support.

[0011] A support module is slidably mounted on the linear guide rail and connected to the floating plate to support the grinding spindle.

[0012] As a further improvement and optimization of this solution, a control module is also installed on the support. The control module is connected to the cylinder and is used to control the extension and retraction of the output end of the cylinder to maintain a constant magnitude of the floating force of the floating plate.

[0013] As a further improvement and optimization of this solution, the control module includes:

[0014] A solenoid valve, which is connected to the cylinder, is used to control the extension and retraction of the cylinder;

[0015] A proportional valve, connected between the solenoid valve and the cylinder, is used to adjust the constant magnitude of the floating force of the floating plate;

[0016] A displacement sensor is installed on the cylinder and is connected to the solenoid valve and the proportional valve respectively. The displacement sensor is used to detect the displacement at the output end of the cylinder and feed the detection signal back to the solenoid valve and the proportional valve so that the solenoid valve and the proportional valve can adjust the cylinder and thereby adjust the constant magnitude of the floating force of the floating plate.

[0017] As a further improvement and optimization of this solution, the control module also includes an acceleration sensor, which is electrically connected to the cylinder and is used to detect changes in acceleration at the cylinder output end.

[0018] As a further improvement and optimization of this solution, the control module also includes a control box, in which the acceleration sensor, the solenoid valve, and the proportional valve are sealed and installed.

[0019] As a further improvement and optimization of this solution, the support module includes a slider and a floating flange. The slider is slidably mounted on the linear guide rail, and the floating flange is mounted on the slider for mounting the grinding spindle.

[0020] As a further improvement and optimization of this solution, the slider and the linear guide rail form an airtight guide rail slider structure.

[0021] As a further improvement and optimization of this solution, the support has a telescopic cylinder, the cylinder is coaxially disposed inside the telescopic cylinder, and the telescopic cylinder includes:

[0022] A bottom cylinder, the bottom of which is mounted on the support;

[0023] A sleeve, the top of which is connected to the floating plate and the bottom of which is slidably fitted onto the outside of the bottom cylinder.

[0024] As a further improvement and optimization of this solution, the sleeve and the bottom cylinder form a non-sealed sliding guide fit.

[0025] As a further improvement and optimization of this solution, a fixed flange is also provided on the support.

[0026] The positive effects of the above technical solution compared with the existing technology are:

[0027] (1) The present invention adopts a sliding fit design between linear guide rail and support module to improve the load-bearing capacity of constant force floating device, and can use electric spindle to grind constant force to improve processing stability.

[0028] (2) In this embodiment, the robot can accurately achieve constant force floating grinding of the workpiece axis through the detection and control of displacement sensor and proportional valve.

[0029] (3) In this utility model, the linear guide slider adopts an air seal, the solenoid valve and the proportional valve adopt a control box for complete sealing, and the cylinder adopts a telescopic cylinder for incomplete sealing, which can effectively prevent the harm of grinding dust. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of an axial constant force floating device according to the present invention;

[0031] Figure 2 This is a front view of an axial constant force floating device according to the present invention;

[0032] Figure 3 This is a schematic diagram of the installation of the cylinder of the axial constant force floating device of this utility model;

[0033] Figure 4 This is a schematic diagram of the fixed flange of an axial constant force floating device according to the present invention;

[0034] Figure 5 This is a schematic diagram of the control module of an axial constant force floating device according to the present invention;

[0035] In the attached diagram: 1. Support; 2. Floating plate; 3. Support module; 4. Grinding spindle; 5. Telescopic cylinder; 6. Control module; 7. Cylinder; 11. Linear guide rail; 12. Fixed flange; 31. Slider; 32. Floating flange; 51. Bottom cylinder; 52. Sleeve; 61. Control box; 62. Proportional valve; 63. Solenoid valve; 64. Accelerometer; 65. Displacement sensor. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0037] Figure 1 This is a structural schematic diagram of an axial constant force floating device according to the present invention. Figure 2 This is a front view of an axial constant force floating device according to the present invention. Figure 3 This is a schematic diagram of the cylinder installation for an axial constant force floating device according to this utility model. Figure 4 This is a schematic diagram of the fixed flange of the axial constant force floating device of this utility model. Figure 5 This is a schematic diagram of the control module of an axial constant force floating device according to the present invention. Figures 1 to 5As shown, a preferred embodiment of an axial constant force floating device is illustrated, including a support 1, a cylinder 7, a floating plate 2, a linear guide rail 11, and a support module 3. The cylinder 7 is mounted on the support 1, the floating plate 2 is connected to the output end of the cylinder 7, the linear guide rail 11 is arranged parallel to the cylinder 7 and is located on the support 1, and the support module 3 is slidably mounted on the linear guide rail 11 and connected to the floating plate 2 for supporting the grinding spindle 4.

[0038] In this embodiment, a sliding fit design between the linear guide rail 11 and the support module 3 is adopted to improve the load-bearing capacity of the constant force floating device, and the constant force can be maintained by the electric spindle grinding, thereby improving the processing stability.

[0039] Furthermore, as a preferred embodiment, a control module 6 is also installed on the support 1. The control module 6 is connected to the cylinder 7 and is used to control the extension and retraction of the output end of the cylinder 7 to maintain a constant magnitude of the floating force of the floating plate 2.

[0040] Furthermore, in a preferred embodiment, the control module 6 includes a solenoid valve 63, a proportional valve 62, and a displacement sensor 65. The solenoid valve 63 is connected to the cylinder 7 and is used to control the extension and retraction of the cylinder 7. The proportional valve 62 is connected between the solenoid valve 63 and the cylinder 7 and is used to adjust the constant magnitude of the floating force of the floating plate 2. The displacement sensor 65 is installed on the cylinder 7 and is signal-connected to the solenoid valve 63 and the proportional valve 62 respectively. It is used to detect the displacement at the output end of the cylinder 7 and feed the detection signal back to the solenoid valve 63 and the proportional valve 62 so that the solenoid valve 63 and the proportional valve 62 adjust the cylinder 7, thereby adjusting the constant magnitude of the floating force of the floating plate 2.

[0041] In this embodiment, the robot can accurately achieve constant force floating grinding of the workpiece along the axial direction through the detection and control of displacement sensor 65 and proportional valve 62.

[0042] Furthermore, in a preferred embodiment, the control module 6 also includes an acceleration sensor 64, which is electrically connected to the cylinder 7 and is used to detect changes in acceleration at the output end of the cylinder 7.

[0043] Furthermore, as a preferred embodiment, the control module 6 also includes a control box 61, in which the acceleration sensor 64, solenoid valve 63, and proportional valve 62 are sealed and installed, providing dust protection and improving service life.

[0044] Furthermore, as a preferred embodiment, the support module 3 includes a slider 31 and a floating flange 32. The slider 31 is slidably mounted on the linear guide rail 11, and the floating flange 32 is mounted on the slider 31 for mounting the grinding spindle 4.

[0045] Furthermore, as a preferred embodiment, the slider 31 and the linear guide rail 11 form an airtight guide rail slider structure to reduce the impact of grinding dust on the sliding of the slider 31 and the linear guide rail 11.

[0046] Specifically, in this embodiment, the slider 31 has an air inlet and an air passage. Both sides of the slider 31 have mounting cavities that communicate with the air passages and are used to mount rolling elements (which can be balls). By introducing compressed air into the mounting cavities of the rolling elements, a gas film is formed in the gap between the rolling elements. This gas film can effectively prevent the machining and grinding particles from entering the linear guide 11, while reducing the direct contact between the rolling elements and the linear guide 11, thereby reducing friction and wear.

[0047] Specifically, the linear guide 11 has grooves on both sides, and several rolling elements on both sides of the slider 31 roll into the grooves on both sides of the linear guide 11.

[0048] Furthermore, as a preferred embodiment, the support 1 has a telescopic cylinder 5, the cylinder 7 is coaxially disposed inside the telescopic cylinder 5, and the telescopic cylinder 5 includes a bottom cylinder 51 and a sleeve 52. The bottom of the bottom cylinder 51 is installed on the support 1, the top of the sleeve 52 is connected to the floating plate 2, and the bottom is slidably sleeved on the outside of the bottom cylinder 51.

[0049] In this embodiment, the telescopic cylinder 5 can protect the cylinder 7, increase its service life, reduce the risk of damage, and reduce maintenance costs.

[0050] Furthermore, as a preferred embodiment, the sleeve 52 and the bottom cylinder 51 form a non-sealed sliding guide fit to avoid the influence of the air pressure inside the telescopic cylinder 5 on the operation of the cylinder 7 during the extension and retraction process.

[0051] In one embodiment, the outer wall of the bottom cylinder 51 has an air groove for communicating between the inside of the telescopic cylinder and the outside.

[0052] Furthermore, as a preferred embodiment, the support 1 is also provided with a fixed flange 12.

[0053] In this embodiment, the linear guide rail 11 and slider 31 are air-sealed, the solenoid valve 63 and proportional valve 62 are completely sealed by the control box 61, and the cylinder 7 is partially sealed in the form of a telescopic cylinder 5, which can effectively prevent the harm of grinding dust.

[0054] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An axial constant force floating device, characterized in that, include: Support; A cylinder, which is mounted on the support; A floating plate, which is connected to the output end of the cylinder; A linear guide rail is arranged parallel to the cylinder and mounted on the support. A support module is slidably mounted on the linear guide rail and connected to the floating plate to support the grinding spindle.

2. The axial constant force floating device according to claim 1, characterized in that, The support is also equipped with a control module, which is connected to the cylinder and is used to control the extension and retraction of the cylinder's output end to maintain a constant buoyancy force on the floating plate.

3. The axial constant force floating device according to claim 2, characterized in that, The control module includes: a solenoid valve, which is connected to the cylinder and is used to control the extension and retraction of the cylinder; A proportional valve, connected between the solenoid valve and the cylinder, is used to adjust the constant magnitude of the floating force of the floating plate; A displacement sensor is installed on the cylinder and is connected to the solenoid valve and the proportional valve respectively. The displacement sensor is used to detect the displacement at the output end of the cylinder and feed the detection signal back to the solenoid valve and the proportional valve so that the solenoid valve and the proportional valve can adjust the cylinder and thereby adjust the constant magnitude of the floating force of the floating plate.

4. The axial constant force floating device according to claim 3, characterized in that, The control module also includes an acceleration sensor, which is electrically connected to the cylinder and is used to detect changes in acceleration at the cylinder output.

5. The axial constant force floating device according to claim 4, characterized in that, The control module also includes a control box, in which the acceleration sensor, the solenoid valve, and the proportional valve are sealed and installed.

6. The axial constant force floating device according to claim 1, characterized in that, The support module includes a slider and a floating flange. The slider is slidably mounted on the linear guide rail, and the floating flange is mounted on the slider for mounting the grinding spindle.

7. The axial constant force floating device according to claim 6, characterized in that, The slider and the linear guide rail form an airtight guide rail slider structure.

8. The axial constant force floating device according to claim 1, characterized in that, The support has a telescopic cylinder, the cylinder is coaxially disposed inside the telescopic cylinder, and the telescopic cylinder includes: A bottom cylinder, the bottom of which is mounted on the support; A sleeve, the top of which is connected to the floating plate and the bottom of which is slidably fitted onto the outside of the bottom cylinder.

9. The axial constant force floating device according to claim 8, characterized in that, The sleeve and the bottom cylinder form a non-sealed sliding guide fit.

10. The axial constant force floating device according to claim 1, characterized in that, The support is also equipped with a fixed flange.

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