A precision pressure polishing device

Abstract

The present invention provides a precision pressure polishing device, comprising a workbench, a column, a linear guide, a turntable and a polishing device, wherein one side of the top of the workbench is fixedly connected with the column, a linear guide for moving the turntable is connected at the middle position of the top of the workbench, a turntable is slidably connected to the linear guide, a polishing device for polishing a workpiece is arranged on one side of the column, and a balancing component for balancing is connected to the top of the column; the present invention has a simple structure and is convenient to operate; the present invention dynamically adjusts the gravity of the liquid storage tank by delivering or extracting counterweight liquid to the liquid storage tank, and then adjusts the polishing pressure applied by the polishing device on the surface of the workpiece through the balancing device, thereby realizing real-time adjustment of the polishing pressure and improving the accuracy of polishing; when the electromagnet is energized, the mutual attraction between the electromagnet and the permanent magnet fixes the position of the air floating slider, which is convenient for the inspection and replacement of accessories of the polishing device.

Description

Technical Field

[0001] The invention belongs to the technical field of polishing, and in particular relates to a precision pressure polishing device. Background Art

[0002] Polishing is the only way to achieve ultra-precision size, ultra-accurate shape and extremely low surface roughness on the surface of various solid materials. It is also the best way to eliminate processing defects and damage of materials below the surface. Polishing has a wide range of applications and is capable of ultra-precision processing of various complex surfaces. Especially for the processing of complex surface parts of various difficult-to-process materials used in the fields of optics and electronic information, the polishing process plays an irreplaceable role.

[0003] In the prior art, polishing processing technology mostly adopts a low-speed processing method using loose abrasives, which has the disadvantages of low precision retention and low processing speed, greatly affecting the productivity of precision parts; for the airbag polishing equipment used, its structure is relatively complex, the abrasive rotation radius on the ball-shaped polishing head is small, and the grinding and polishing speed is low, so that the processing efficiency is not significantly improved. Although it is suitable for processing complex surface parts, it is less efficient when processing large and medium-sized ultra-precision parts, and the processing cost is very high when used; therefore, a precision pressure polishing device with high polishing accuracy, high efficiency and low cost is proposed. Summary of the invention

[0004] The invention provides a precision pressure polishing device, which aims to solve the problems of low polishing efficiency, high cost and low precision in the prior art.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a precision pressure polishing device, including a workbench, a column, a linear guide rail, a turntable and a polishing device, wherein one side of the top of the workbench is fixedly connected to the column, a linear guide rail for moving the turntable is connected at the middle position of the top of the workbench, a turntable is slidably connected to the linear guide rail, a polishing device for polishing a workpiece is arranged on one side of the column, and a balancing component for balancing is connected to the top of the column.

[0006] One end of the balancing component is connected to a weight-adjustable counterweight device; the other end of the balancing component is connected to an air flotation component, and the air flotation component is connected to a polishing device for polishing.

[0007] The counterweight device of the present invention comprises a liquid storage tank for storing counterweight liquid, one end of the liquid storage tank is connected to a connecting pipe, one end of the connecting pipe is connected to a water pump for bidirectionally conveying counterweight liquid, and one end of the water pump is connected to a motor.

[0008] The air flotation assembly of the present invention comprises an air flotation guide rail, on the side wall of which an air flotation slider is slidably connected, on the side wall of which a mounting plate is connected, on which a polishing device for polishing is connected, and the air flotation guide rail is fixedly connected to a column via a connecting block.

[0009] The balancing assembly of the present invention includes two pulleys, one of which is fixed to one side of the top of the column, and the other is fixed to the top of the air-floating guide rail. The two pulleys are connected with a pull rope, one end of which is connected to the liquid storage tank, and the other end of which is connected to the air-floating slider.

[0010] A tension sensor is connected between the pull rope and the liquid storage tank of the present invention.

[0011] A positioning component for positioning the polishing device is connected between the upright column and the air-floating slider of the present invention.

[0012] The positioning assembly described in the present invention includes a positioning plate fixed on the side wall of the column, a permanent magnet is connected to the side wall of the positioning plate at one end facing the air-floating slider, a fixing frame is connected to the side wall of the air-floating slider, an electromagnet is connected to the fixing frame, and one end of the permanent magnet is facing the electromagnet; when the permanent magnet and the electromagnet are in contact, the electromagnet is configured to generate suction on the permanent magnet when energized.

[0013] The fixing frame of the present invention is threadedly connected with a rotating column, the rotating column is made of insulating material, and an electromagnet is connected inside the rotating column.

[0014] The electromagnet of the present invention comprises an iron core and a conducting wire wound around the iron core, and the conducting wire is connected to a power source.

[0015] The beneficial effects of the present invention are as follows: the present invention has a simple structure and is easy to operate; the present invention dynamically adjusts the gravity of the liquid storage tank by delivering or extracting counterweight liquid into the liquid storage tank, and then adjusts the polishing pressure applied by the polishing device on the workpiece surface through the balancing device, thereby realizing real-time adjustment of the polishing pressure and improving the accuracy of polishing; when the electromagnet is energized, the mutual attraction between the electromagnet and the permanent magnet fixes the position of the air-floating slider, which is convenient for the inspection and replacement of accessories of the polishing device; when preparing for polishing, an external air compressor fills gas into the air-floating gap to prevent contact between the guide rail and the slider to reduce friction, thereby improving the accuracy of polishing; during the polishing process, when it is necessary to change the polishing pressure, the counterweight liquid is input or output into the liquid storage tank, and as the counterweight liquid is input or output, the pressure between the polishing device and the workpiece is adjusted, thereby realizing dynamic adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2It is a schematic diagram of the structure of the air flotation component in the present invention;

[0018] Figure 3 It is a cross-sectional view of the fixing frame in the present invention;

[0019] In the figure: 1-workbench, 2-column, 3-linear guide, 4-turntable, 5-polishing device, 61-pulley, 62-pull rope, 71-liquid storage tank, 72-connecting pipe, 73-water pump, 74-motor, 75-tension sensor, 81-air floating guide, 82-air floating slider, 83-mounting plate, 91-positioning plate, 92-permanent magnet, 93-rotating column, 94-iron core, 95-conducting wire, 96-fixed frame. DETAILED DESCRIPTION

[0020] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-3 The present invention provides a technical solution for a precision pressure polishing device: a precision pressure polishing device, comprising a workbench 1, a column 2, a linear guide 3, a turntable 4 and a polishing device 5, wherein one side of the top of the workbench 1 is fixedly connected to the column 2, a linear guide 3 for moving the turntable 4 is connected at the middle position of the top of the workbench 1, the turntable 4 can make a linear motion on the linear guide 3, a polishing device 5 for polishing a workpiece is connected to the side wall of one end of the column 2 through an air flotation component, a balancing component for balancing a counterweight device and the polishing device 5 is connected to the top of the column 2, one end of the balancing component is connected to a counterweight device with adjustable weight; an air flotation component is connected to the other end of the balancing component, and a polishing device 5 for polishing is connected to the air flotation component, the counterweight device and the polishing device 5 are balanced by the balancing component, and the counterweight device can dynamically adjust its own gravity and thus can be dynamically adjusted, thereby adjusting the pressure applied by the polishing device 5 to the surface of the polished workpiece.

[0022] The balancing assembly includes two pulleys 61, one pulley 61 is fixed to one side of the top of the column 2, and the other pulley 61 is fixed to the top of the air-floating guide rail 81. The two pulleys 61 are connected with a pull rope 62, one end of the pull rope 62 is connected to the liquid storage tank 71, and the other end of the pull rope 62 is connected to the air-floating slider 82. The air-floating guide rail 81 and the liquid storage tank 71 are balanced by the pulley 61 and the pull rope 62.

[0023] In this embodiment, the counterweight device includes a liquid storage tank 71 for storing counterweight liquid, one end of a connecting pipe 72 is connected to the liquid storage tank 71, and the other end is connected to a water pump 73 that can transport the counterweight liquid in both directions, the water pump 73 is connected to a motor 74, and a tension sensor 75 is connected to the top of the liquid storage tank 71, one end of a pull rope 62 is fixed to the top of the tension sensor 75, the pressure generated by the polishing device 5 during polishing acts on the air-floating slider 82, and the pressure acting on the air-floating slider 82 acts on the tension sensor 75 through the pull rope 62, and the tension data measured by the tension sensor 75 is transmitted to the controller (the controller is a single-chip microcomputer) in real time, and the controller transmits a signal to the water pump 73 and the motor 74, at which time the motor 74 starts working to drive the water pump 73 inputs or extracts the balancing liquid into the liquid storage tank 71; when a smaller polishing pressure is required, the motor 74 is started in the forward direction to drive the water pump 73 to input the balancing liquid into the liquid storage tank 71, and the tension data is transmitted through the tension sensor 75. When the polishing pressure is reduced to the target value, the motor 74 is stopped, and the balancing liquid is stopped from being transported into the liquid storage tank 71; when the polishing pressure needs to be increased, the motor 74 is started in the reverse direction to drive the water pump 73 to extract the balancing liquid from the liquid storage tank 71, and the tension data is transmitted through the tension sensor 75. When the polishing pressure increases to the target value, the motor 74 is stopped, and the balancing liquid tension sensor 75 is stopped from being extracted from the liquid storage tank 71; before the start of polishing, the liquid storage tank 71 is in an empty state, and the workpiece is placed in it.

[0024] A pressure relief hole is provided on the side wall of the liquid storage box 71, and pressure is relieved through the pressure relief hole.

[0025] In this embodiment, the air flotation component includes an air flotation guide rail 81, on the side wall of which the air flotation guide rail 81 is slidably connected to an air flotation slider 82, on the side wall of which the air flotation slider 82 is fixedly connected to a mounting plate 83, the connecting seat of the polishing device 5 is fixed on the mounting plate 83, the air flotation guide rail 81 is fixedly connected to the column 2 through a connecting block, and there is an air flotation gap between the air flotation guide rail 81 and the air flotation slider 82; when the air flotation guide rail 81 and the air flotation slider 82 are working, an external air compressor fills the air flotation gap with gas so that the guide rail and the slider are not in contact to reduce friction, thereby improving the polishing accuracy, and the air flotation guide rail is only used to limit the moving direction of the air flotation slider; during the polishing process, when the polishing pressure needs to be changed, the counterweight liquid is input or output into the liquid storage tank, and the pressure between the polishing device 5 and the workpiece is adjusted as the counterweight liquid is input or output, thereby achieving dynamic adjustment.

[0026] A positioning assembly for positioning the polishing device 5 is connected between the column 2 and the air-floating slider 82; the positioning assembly includes a positioning plate 91 fixed on the side wall of the column 2, a permanent magnet 92 is connected to the side wall of the positioning plate 91 facing the air-floating slider 82, a fixing frame 96 is connected to the side wall of the air-floating slider 82, an electromagnet is connected inside the rotating column 93, the rotating column 93 is made of insulating material, the rotating column 93 passes through the fixing frame 96, and is threadedly connected to the fixing frame 96, the rotating column 93 is rotated, and then the electromagnet is driven to move relative to the fixing frame 96, when the electromagnet moves relative to the fixing frame 96, one end of the electromagnet can fit with the permanent magnet 92; the electromagnet includes an iron core 94 and a wire 95 wound around the iron core 94, and a power source is connected to the side wall of one end of the iron core 94 The connection port and the power connection port are connected to the wire 95. When the iron core 94 needs to be energized, the external power supply is connected through the power connection port; the other end of the iron core 94 extends to the outside of the rotating column 93 and can be fitted with the permanent magnet 92; when the polishing device needs to replace accessories, the air-floating slider is required to remain stable to facilitate the replacement of accessories; at this time, the rotating column 93 is rotated, and the rotating column 93 moves toward the direction of the permanent magnet 92. When the iron core 94 fits with the permanent magnet 92, the rotation of the rotating column 93 is stopped, and the external power supply is connected through the power connection port. After the electromagnet is energized, a mutual attraction is generated between it and the permanent magnet 92, so that the air-floating slider 82 remains fixed in the vertical direction, thereby facilitating the replacement of accessories. After the accessories are replaced, the external power supply is disconnected and the rotating column 93 is reset.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precision pressure polishing device, comprising a workbench (1), a column (2), a linear guide rail (3), a turntable (4) and a polishing device (5), wherein one side of the top end of the workbench (1) is fixedly connected to the column (2), a linear guide rail (3) for moving the turntable (4) is connected at the middle position of the top end of the workbench (1), the turntable (4) is slidably connected to the linear guide rail (3), and a polishing device (5) for polishing a workpiece is arranged on one side of the column (2), characterized in that: A balancing component for balancing is connected to the top of the column (2). One end of the balancing component is connected to a weight-adjustable counterweight device; the other end of the balancing component is connected to an air flotation component, and the air flotation component is connected to a polishing device (5) for polishing; The weight balancing device comprises a liquid storage tank (71) for storing weight balancing liquid, one end of the liquid storage tank (71) is connected to a connecting pipe (72), one end of the connecting pipe (72) is connected to a water pump (73) for bidirectionally conveying weight balancing liquid, and one end of the water pump (73) is connected to a motor (74); The air-floating assembly comprises an air-floating guide rail (81), an air-floating slider (82) is slidably connected to the side wall of the air-floating guide rail (81), a mounting plate (83) is connected to the side wall of the air-floating slider (82), a polishing device (5) for polishing is connected to the mounting plate (83), and the air-floating guide rail (81) is fixedly connected to the column (2) via a connecting block; The balancing assembly comprises two pulleys (61), one of the pulleys (61) is fixed to one side of the top end of the column (2), and the other pulley (61) is fixed to the top end of the air-floating guide rail (81), and the two pulleys (61) are connected with a pull rope (62), one end of the pull rope (62) is connected to the liquid storage tank (71), and the other end of the pull rope (62) is connected to the air-floating slider (82); A positioning component for positioning the polishing device (5) is connected between the upright column (2) and the air-floating slider (82); The positioning assembly comprises a positioning plate (91) fixed on the side wall of the column (2); a permanent magnet (92) is connected to the side wall of one end of the positioning plate (91) facing the air-floating slider (82); a fixing frame (96) is connected to the side wall of the air-floating slider (82); an electromagnet is connected to the fixing frame (96); one end of the permanent magnet (92) faces the electromagnet; when the permanent magnet (92) is in contact with the electromagnet, the electromagnet is configured to generate suction force on the permanent magnet (92) when energized; A rotating column (93) is threadedly connected to the fixing frame (96); the rotating column (93) is made of insulating material, and an electromagnet is connected inside the rotating column (93); A tension sensor is connected to the top of the liquid storage tank, and one end of the pull rope is fixed on the top of the tension sensor. The pressure generated by the polishing device during polishing acts on the air-floating slider, and the pressure acting on the air-floating slider acts on the tension sensor through the pull rope. The tension data measured by the tension sensor is transmitted to the controller in real time, and the controller transmits the signal to the water pump and the motor. At this time, the motor starts to work and drives the water pump to input or extract the counterweight liquid into the liquid storage tank; when a smaller polishing pressure is required, the motor is started in the forward direction to drive the water pump to input the counterweight liquid into the liquid storage tank, and the tension data of the tension sensor is obtained. When the polishing pressure is reduced to the target value, the motor is stopped, and the delivery of the counterweight liquid into the liquid storage tank is stopped; when the polishing pressure needs to be increased, the motor is started in the reverse direction to drive the water pump to extract the counterweight liquid from the liquid storage tank, and the tension data of the tension sensor is obtained. When the polishing pressure increases to the target value, the motor is stopped, and the counterweight liquid tension sensor is stopped from being extracted from the liquid storage tank; before polishing begins, the liquid storage tank is in an empty state, and the workpiece is placed in it.

2. A precision pressure polishing device according to claim 1, characterized in that: A tension sensor (75) is connected between the pull rope (62) and the liquid storage tank (71).

3. A precision pressure polishing device according to claim 1, characterized in that: The electromagnet comprises an iron core (94) and a wire (95) wound around the iron core (94), and the wire (95) is connected to a power source.

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