Internal polishing machine

Abstract

The invention discloses an internal polishing machine which comprises a workpiece motor, a workpiece suction cup, a moving mechanism, a swing arm mechanism, a polishing motor, a pressure sensor and a controller, the workpiece suction cup is connected with the output end of the workpiece motor, the moving mechanism comprises a transverse moving device and a lifting device, the lifting device is installed on the transverse moving device, the swing arm mechanism is installed on the lifting device, and the polishing motor is connected with the pressure sensor. The swing arm mechanism comprises a mounting plate, a swing arm motor and a fixing plate, the mounting plate is mounted on the lifting device, the swing arm motor is mounted on the mounting plate, the fixing plate is connected with the output end of the swing arm motor, the polishing motor is mounted on the fixing plate, the output end of the polishing motor is connected with a polishing wheel, and the pressure sensor is arranged at the output end of the workpiece motor. The pressure sensor can detect the contact pressure of the polishing wheel and the workpiece, and the controller is electrically connected with the moving mechanism, the swing arm mechanism and the pressure sensor. The arc-shaped surface at the edge of an inner hole can be polished and ground, the polishing action flexibility is high, and the workpiece polishing uniformity is high.

Description

Technical Field

[0001] The invention belongs to the field of polishing equipment, and in particular relates to an internal polishing machine. Background Art

[0002] Internal polishing machines are devices specifically used for polishing the inner surface or inner hole of a workpiece. While the workpiece is rotating, the polishing wheel rotates to contact the side wall of the workpiece's inner hole for polishing. Currently, internal polishing machines that contact the side wall of the workpiece's inner hole for polishing can only polish rotating surfaces such as cylindrical inner hole side walls or flat surfaces such as the bottom surface of the inner wall. Because the feed distance of the polishing wheel needs to be continuously changed when polishing the curved surface, the current internal polishing machines are unable to polish the curved surface at the edge of the inner hole. Therefore, in order to avoid the shortcomings of the existing technology, it is necessary to make improvements to the existing technology. Summary of the Invention

[0003] The purpose of the present invention is to provide an internal polishing machine which can polish and grind the arc surface at the edge of an inner hole, has high polishing action flexibility, and high polishing uniformity for the workpiece.

[0004] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows:

[0005] An internal polishing machine includes a workpiece motor, a workpiece suction cup, a moving mechanism, a swing arm mechanism, a polishing motor, a pressure sensor and a controller, wherein the workpiece suction cup is connected to the output end of the workpiece motor, and the workpiece suction cup can adsorb and fix the workpiece to be polished, the moving mechanism is arranged on the side of the workpiece suction cup, the moving mechanism includes a transverse movement device and a lifting device, the lifting device is installed on the transverse movement device, the swing arm mechanism is installed on the lifting device, the swing arm mechanism includes a mounting plate, a swing arm motor and a fixed plate, the mounting plate is installed on the lifting device, the swing arm motor is installed on the mounting plate, the fixed plate is connected to the output end of the swing arm motor, the polishing motor is installed on the fixed plate, the output end of the polishing motor is connected to a polishing wheel, the pressure sensor is arranged at the output end of the workpiece motor, the pressure sensor can detect the contact pressure between the polishing wheel and the workpiece, and the controller is electrically connected to the moving mechanism, the swing arm mechanism and the pressure sensor respectively.

[0006] As a preferred solution of the above-mentioned internal polishing machine, a waxing mechanism is provided below the polishing wheel, a wax block is provided on the waxing mechanism, and the waxing mechanism can drive the wax block to move toward the polishing wheel.

[0007] As a preferred solution of the above-mentioned internal polishing machine, the waxing mechanism is provided with a guide rail and a servo motor, a slider is slidingly provided on the guide rail, and the slider slides along the guide rail to push the wax block toward the polishing wheel, and the servo motor is provided at the end of the guide rail, and the output end of the servo motor is connected to the slider through a screw nut pair and drives the slider to slide along the guide rail.

[0008] As a preferred solution of the above-mentioned internal polishing machine, the controller is electrically connected to the waxing mechanism.

[0009] As a preferred solution of the above-mentioned internal polishing machine, the workpiece suction cup is vertically arranged.

[0010] As a preferred solution of the above-mentioned internal polishing machine, the polishing motor is an aluminum shell motor.

[0011] As a preferred solution of the above-mentioned internal polishing machine, a sliding plate is slidably provided on the transverse movement device, and the lifting device is fixedly connected to the sliding plate.

[0012] As a preferred solution of the above-mentioned internal polishing machine, a drag chain is provided on the side of the lifting device.

[0013] The internal polishing machine provided by the present invention has the following beneficial effects compared with the prior art:

[0014] The polishing motor of the present invention is arranged on the swing arm mechanism, and the polishing motor is driven to move and rotate by the moving mechanism and the swing arm mechanism to polish and grind the inner hole of the part. The swing arm mechanism drives the polishing motor to adjust the angle. The polishing action is highly flexible and can be aligned with the edge of the inner hole of the workpiece for polishing and grinding. The moving mechanism includes a transverse movement device and a lifting device. The swing arm mechanism is installed on the lifting device, and the transverse movement mechanism drives the lifting device to move transversely to adjust the lateral position of the lifting mechanism, thereby adjusting the position of the swing arm mechanism. The lifting mechanism adjusts the height position of the swing arm mechanism by driving the swing arm mechanism to rise and fall, so that the polishing wheel can be aligned with the workpiece. The swing arm mechanism includes a mounting plate, a swing arm motor and a fixed plate, and the mounting plate is used to be fixed on the lifting mechanism and enable the swing arm motor to be mounted on the mounting plate. The output end of the swing arm motor is connected to the fixed plate, and the polishing motor is mounted on the fixed plate, so that the swing arm motor drives the polishing motor to adjust the angle, which is convenient for polishing and grinding the curved surface at the edge of the inner hole. During the polishing and grinding process, the curved surface is not a plane, so the swing arm motor needs The polishing motor and the polishing wheel are driven to rotate and adjust their positions continuously so that the polishing wheel can polish and grind at the same time. However, when polishing the curved surface, the polishing degree of the curved surface is uneven. In the process of polishing and grinding at the same time, the polishing wheel can easily cause the curved surface at the edge of the inner hole of the workpiece to be polished deeply on one side and shallowly on the other side, so that the polishing depth of each position of the curved surface is different, which affects the polishing accuracy and uniformity of the curved surface. Therefore, a pressure sensor is set at the output end of the workpiece motor to detect the contact pressure between the polishing wheel and the workpiece. When the polishing degree of the workpiece deepens, the contact pressure between the polishing wheel and the workpiece increases, and conversely, the contact pressure between the polishing wheel and the workpiece decreases. The controller receives the pressure data and adjusts the movement of the moving mechanism and the swing arm mechanism to adjust the position of the polishing wheel, thereby adjusting the depth of the workpiece grinding. Keeping the pressure data of the pressure sensor stable means that the depth of each position during the grinding process of the curved surface at the edge of the inner hole is consistent, and the polishing uniformity of the workpiece surface is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0016] Figure 1 It is a schematic diagram of the inner polishing machine of the present invention Figure 1 ;

[0017] Figure 2 It is a schematic diagram of the inner polishing machine of the present invention Figure 2 ;

[0018] Figure 3 yes Figure 2 A partial enlarged schematic diagram of the swing arm mechanism.

[0019] Markings in the figure:

[0020] 100, workpiece motor; 110, pressure sensor; 200, workpiece suction cup; 300, moving mechanism; 310, transverse movement device; 311, sliding plate; 320, lifting device; 321, drag chain; 400, swing arm mechanism; 410, swing arm motor; 420, mounting plate; 430, fixing plate; 500, polishing motor; 510, polishing wheel; 600, waxing mechanism; 610, guide rail; 620, servo motor; 630, slider; 640, wax block. DETAILED DESCRIPTION

[0021] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0022] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They 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. Therefore, they cannot be understood as limitations on the present invention.

[0023] 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 use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0024] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0025] Please also refer to Figures 1 to 3 Now, the internal polishing machine provided by the embodiment of the present invention is described.

[0026] like Figures 1 to 3As shown, an internal polishing machine according to an embodiment of the present invention includes a workpiece motor 100, a workpiece suction cup 200, a moving mechanism 300, a swing arm mechanism 400, a polishing motor 500, a pressure sensor 110 and a controller. The workpiece suction cup 200 is connected to the output end of the workpiece motor 100, and the workpiece suction cup 200 can adsorb and fix the workpiece to be polished. The moving mechanism 300 is arranged on the side of the workpiece suction cup 200, and the moving mechanism 300 includes a transverse movement device 310 and a lifting device 320. The lifting device 320 is installed on the transverse movement device 310, and the swing arm mechanism 400 is installed on the lifting device 320. The swing arm mechanism 400 includes a mounting plate 4 20. A swing arm motor 410 and a fixed plate 430. The mounting plate 420 is mounted on the lifting device 320. The swing arm motor 410 is mounted on the mounting plate 420. The fixed plate 430 is connected to the output end of the swing arm motor 410. The polishing motor 500 is mounted on the fixed plate 430. The output end of the polishing motor 500 is connected to a polishing wheel 510. The pressure sensor 110 is arranged at the output end of the workpiece motor 100. The pressure sensor 110 can detect the contact pressure between the polishing wheel 510 and the workpiece. The controller is electrically connected to the moving mechanism 300, the swing arm mechanism 400 and the pressure sensor 110 respectively.

[0027] The polishing motor 500 and polishing wheel 510 of the internal polishing machine are relatively light in weight. The workpiece suction cup 200 is fixed in position to adsorb the workpiece and keep the workpiece position unchanged. The polishing method of using the swing arm mechanism 400 to drive the polishing motor 500 and the polishing wheel 510 to change position is more flexible. The arc surface at the corner of the edge of the inner hole of the workpiece is not a plane, so it is necessary to drive the polishing wheel 510 to swing and adjust the angle while polishing and grinding through the swing arm mechanism 400. However, this can easily lead to uneven depth of polishing of the arc surface. Therefore, a pressure sensor 110 is set at the output end of the workpiece motor 100. By detecting the pressure when the polishing wheel 510 contacts the workpiece, the controller controls the moving mechanism 300 and the swing arm mechanism 400 to adjust the position and angle of the polishing wheel 510 to ensure that the depth of polishing of the arc surface is uniform during polishing.

[0028] Illustratively, a waxing mechanism 600 is provided below the polishing wheel 510. A wax block 640 is provided on the waxing mechanism 600, and the waxing mechanism 600 can drive the wax block 640 to move toward the polishing wheel 510. The waxing mechanism 600 can drive the wax block 640 to move toward the polishing wheel 510 to wax the polishing wheel 510, thereby maintaining the polishing ability of the polishing wheel 510 and preventing the surface of the workpiece from being scratched.

[0029] Exemplarily, the waxing mechanism 600 is provided with a guide rail 610 and a servo motor 620. A slider 630 is slidably provided on the guide rail 610. The slider 630 slides along the guide rail 610 to push the wax block 640 toward the polishing wheel 510. The servo motor 620 is provided at the end of the guide rail 610. The output end of the servo motor 620 is connected to the slider 630 via a screw-nut pair and drives the slider 630 to slide along the guide rail 610. The servo motor 620 drives the slider 630 to slide along the guide rail 610 to push the wax block 640 toward the polishing wheel 510. The servo motor 620 has high control accuracy and can move the wax block 640 only a short distance, which is suitable for waxing and rewaxing the polishing wheel 510. The servo motor 620 drives the slider 630 to push the wax block 640, thereby realizing the automatic waxing function of the polishing wheel 510.

[0030] Exemplarily, the controller is electrically connected to the waxing mechanism 600. When the wax block 640 contacts the polishing wheel 510, pressure is generated. The pressure sensor 110 can detect the pressure of the wax block 640 in contact with the polishing wheel 510. The controller is electrically connected to the waxing mechanism 600 and controls the movement distance of the wax block 640 according to the pressure value detected by the pressure sensor 110 to ensure that the waxing is not too much or too little during waxing, so that the polishing wheel 510 is waxed evenly.

[0031] For example, the workpiece suction cup 200 is disposed vertically. By disposing the workpiece suction cup 200 vertically, the workpiece can be rotated in a horizontal position, thereby preventing the output shaft of the workpiece motor 100 from being deformed by the pressure of the workpiece suction cup 200 and the workpiece for a long time due to the horizontal placement of the workpiece suction cup 200. Furthermore, the detection value of the pressure sensor 110 is prevented from being affected by the gravity of the workpiece suction cup 200 and the workpiece.

[0032] For example, the polishing motor 500 is an aluminum shell motor. The polishing motor 500 needs to be set on the swing arm mechanism 400 and driven by the swing arm mechanism 400 to adjust the angle. The aluminum shell motor is light in weight and is easy to swing the swing arm mechanism 400 to control, making it more flexible during polishing.

[0033] For example, a sliding plate 311 is slidably provided on the transverse movement device 310, and the lifting device 320 is fixedly connected to the sliding plate 311. The lifting device 320 is fixedly connected to the sliding plate 311, and the position of the lifting device 320 is adjusted by the movement of the sliding plate 311, thereby adjusting the position of the polishing wheel 510. The operation is simple and it is convenient for the polishing wheel 510 to be aligned with the workpiece.

[0034] Exemplarily, a drag chain 321 is provided on the side of the lifting device 320 to protect the wires and cables from being stuck during the movement of the transverse device 310 and the lifting device 320.

[0035] The internal polishing machine provided by the present invention has the following beneficial effects compared with the prior art:

[0036] The polishing motor 500 of the present invention is arranged on the swing arm mechanism 400. The polishing motor 500 is driven to move and rotate by the moving mechanism 300 and the swing arm mechanism 400 to polish the inner hole of the part. The swing arm mechanism 400 drives the polishing motor 500 to adjust the angle. The polishing action is highly flexible and can be aligned with the edge of the inner hole of the workpiece for polishing. The moving mechanism 300 includes a transverse movement device 310 and a lifting device 320. The swing arm mechanism 400 is installed on the lifting device 320. The transverse movement mechanism drives the lifting device 320 to move transversely to adjust the lateral position of the lifting mechanism, thereby adjusting the position of the swing arm mechanism 400. The lifting mechanism adjusts the height position of the swing arm mechanism 400 by driving the swing arm mechanism 400 to rise and fall, so that the polishing wheel 510 can be aligned with the workpiece. The swing arm mechanism 400 includes a mounting plate 420, a swing arm motor 410 and a fixed plate 430. The mounting plate 420 is used to be fixed on the lifting mechanism so that the swing arm motor 410 can be installed on the mounting plate 420. The output end of the swing arm motor 410 is connected to the fixed plate 430. The polishing motor 500 is installed on the fixed plate 430, so that the swing arm motor 410 drives the polishing motor 500 to adjust the angle, which is convenient for polishing the curved surface at the edge of the inner hole. During the polishing process, the curved surface is not a plane, so the swing arm motor 410 needs to drive the polishing motor 500 and the polishing wheel 510 to continuously rotate and adjust the position, so that the polishing wheel 510 polishes and rotates at the same time; however, when polishing the curved surface, the polishing degree of the curved surface is uneven. In the process of polishing and rotating the polishing wheel 510, it is easy to cause the curved surface at the edge of the inner hole of the workpiece to be polished deeply on one side and shallowly on the other side, so that the polishing depth of each position of the curved surface is different, which affects the polishing accuracy and uniformity of the curved surface. Therefore, when the workpiece motor 100 is turned, the polishing wheel 510 rotates and rotates at the same time. A pressure sensor 110 is provided at the output end to detect the contact pressure between the polishing wheel 510 and the workpiece. When the degree of polishing of the workpiece deepens, the contact pressure between the polishing wheel 510 and the workpiece increases, and vice versa. The controller receives the pressure data and adjusts the movement of the moving mechanism 300 and the swing arm mechanism 400 to adjust the position of the polishing wheel 510, thereby adjusting the depth of the workpiece grinding. The pressure data of the pressure sensor 110 remains stable, which means that the depth of each position during the grinding of the arc surface at the edge of the inner hole is consistent, and the polishing uniformity of the workpiece surface is high.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. An internal polishing machine, characterized in that: include: Workpiece motor; A workpiece suction cup is connected to the output end of the workpiece motor and can absorb and fix the workpiece to be polished; A moving mechanism, the moving mechanism being arranged on the side of the workpiece suction cup, the moving mechanism comprising a transverse moving device and a lifting device, the lifting device being mounted on the transverse moving device; A swing arm mechanism, the swing arm mechanism being mounted on the lifting device, the swing arm mechanism comprising a mounting plate, a swing arm motor and a fixing plate, the mounting plate being mounted on the lifting device, the swing arm motor being mounted on the mounting plate, and the fixing plate being connected to an output end of the swing arm motor; A polishing motor, wherein the polishing motor is mounted on the fixing plate, and an output end of the polishing motor is connected to a polishing wheel; A pressure sensor is provided at the output end of the workpiece motor, and the pressure sensor is capable of detecting the contact pressure between the polishing wheel and the workpiece; A controller is electrically connected to the moving mechanism, the swing arm mechanism and the pressure sensor respectively.

2. The inner polishing machine according to claim 1, characterized in that A waxing mechanism is provided below the polishing wheel, a wax block is provided on the waxing mechanism, and the waxing mechanism can drive the wax block to move toward the polishing wheel.

3. The inner polishing machine according to claim 2, characterized in that The waxing mechanism is provided with a guide rail and a servo motor, a slider is slidably provided on the guide rail, and the slider slides along the guide rail to push the wax block toward the polishing wheel. The servo motor is provided at the end of the guide rail, and the output end of the servo motor is connected to the slider through a screw nut pair and drives the slider to slide along the guide rail.

4. The inner polishing machine according to claim 3, characterized in that The controller is electrically connected to the waxing mechanism.

5. The inner polishing machine according to any one of claims 1 to 4, characterized in that: The workpiece suction cup is arranged vertically.

6. The inner polishing machine according to any one of claims 1 to 4, characterized in that: The polishing motor is an aluminum shell motor.

7. The inner polishing machine according to any one of claims 1 to 4, characterized in that: A sliding plate is slidably provided on the transverse movement device, and the lifting device is fixedly connected to the sliding plate.

8. The inner polishing machine according to any one of claims 1 to 4, characterized in that: A drag chain is provided on the side of the lifting device.

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