Grinding device for electrostatic contact

Abstract

The invention relates to the technical field of electrostatic contact grinding equipment, in particular to an electrostatic contact grinding device which is used for solving the problem that existing grinding equipment is poor in conical electrostatic contact grinding effect. The device comprises a feeding mechanism, the feeding mechanism comprises a working table, a cushion table is placed on the working table, and the working table is slidably connected with a placing plate; a grinding mechanism is arranged on the workbench, when a to-be-ground static contact rolls on the first table top, the axis of the to-be-ground static contact is parallel to the upper surface of the workbench, and when the to-be-ground static contact rolls on the second table top, the quadrant point connecting line, located at the two ends of the upper portion of the plate face of the containing plate, of the to-be-ground static contact is parallel to the upper surface of the workbench. After the to-be-ground static contact moves to the second table top, the grinding mechanism grinds the to-be-ground static contact; the device is convenient to grind the conical static contacts in batches.

Description

Technical Field

[0001] The invention relates to the technical field of electrostatic contact grinding equipment, in particular to a grinding device for an electrostatic contact. Background Art

[0002] In modern industrial production, electrostatic contacts, as a key component, are widely used in many fields such as electronics and electrical equipment. Their surface quality and precision play a vital role in the performance, stability and service life of the equipment.

[0003] Traditional electrostatic contact grinding methods have many disadvantages. On the one hand, manual grinding is not only inefficient, but also difficult to ensure the consistency of grinding accuracy for each contact, which is prone to uneven grinding and leads to uneven product quality. On the other hand, some existing automated grinding equipment cannot achieve efficient and accurate grinding for electrostatic contacts with special shapes such as cones. During the grinding process, it is difficult to ensure that all parts of the contact can be evenly ground, which affects the overall performance and quality of the product.

[0004] In addition, traditional grinding equipment also has defects in the feeding process. The feeding process is not accurate and stable enough, and it is impossible to achieve sequential and intermittent accurate feeding of multiple workpieces, resulting in low grinding efficiency and unable to meet the needs of large-scale production. Summary of the invention

[0005] The invention provides a grinding device for an electrostatic contact, so as to solve the problem that the existing grinding equipment has a poor grinding effect on the conical electrostatic contact.

[0006] In order to alleviate the above technical problems, the technical solution provided by the present invention is:

[0007] A grinding device for electrostatic contacts, comprising a feeding mechanism, the feeding mechanism comprising a workbench, a pad placed on the workbench, a placing plate slidably connected thereto, a through slot for placing the electrostatic contact to be ground opened on the placing plate, the pad located at the lower part of the placing plate, a first table surface and a second table surface arranged on the pad, the placing plate moving from the first table surface to the second table surface, so that the electrostatic contact to be ground rolls from the first table surface to the second table surface;

[0008] A grinding mechanism is provided on the workbench. When the electrostatic contact to be ground rolls on the first table surface, the axis of the electrostatic contact to be ground is parallel to the upper surface of the workbench. When the electrostatic contact to be ground rolls on the second table surface, the line connecting the quadrant points of the electrostatic contact to be ground at both ends of the upper surface of the placement plate is parallel to the upper surface of the workbench. After the electrostatic contact to be ground moves to the second table surface, the grinding mechanism grinds the electrostatic contact to be ground.

[0009] Furthermore, the feeding mechanism also includes two first limit plates and two second limit plates symmetrically arranged on both sides of the placement plate, the first limit plate on the same side is connected to the second limit plate, and two vertical grooves are symmetrically opened on the placement plate on both sides of the through groove, and two clamping rods are vertically slidably connected in the two vertical grooves, and the ends of the clamping rods are connected to the first gears, and the spacing between the two first limit plates is smaller than the spacing between the two second limit plates. When the placement plate moves from the first limit plate to the second limit plate, the two first gears approach each other, so that the two clamping rods clamp the electrostatic contacts to be ground and the clamping rods and the electrostatic contacts to be ground are in a coaxial position.

[0010] Furthermore, the feeding mechanism also includes a guide bar, in which a first guide groove and a second guide groove are connected, the groove wall of the first guide groove is parallel to the first table surface, and the groove wall of the second guide groove is parallel to the second table surface, so that when the clamping rod is located in the first guide groove, its axis is parallel to the first table surface, and when the clamping rod is located in the second guide groove, its axis is parallel to the second table surface.

[0011] Furthermore, the feeding mechanism also includes two second gears rotatably connected to the second limiting plate, and a chain is transmission-connected between the two second gears. When the placement plate moves to the second limiting plate, multiple first gears are driven to rotate by the chain in turn.

[0012] Furthermore, the grinding mechanism includes a grinding frame, and a grinding roller is rotatably connected to the grinding frame, and the length of the grinding roller is not less than the electrostatic contact to be ground.

[0013] Furthermore, the grinding mechanism also includes a screw connected to the bottom of the grinding frame, the lower surface of the workbench is rotatably connected to a worm wheel, a threaded hole matching the screw is opened in the middle of the worm wheel, and the lower surface of the workbench is rotatably connected to a worm meshing with the worm wheel. When the placement plate moves the distance between two adjacent through grooves, the worm rotates to cause the grinding frame to drop slightly.

[0014] Furthermore, the polishing mechanism also includes an active cylinder and a passive cylinder connected to the workbench, an air pipe is connected between the active cylinder and the passive cylinder, the output end of the active cylinder is connected to the placement plate, the output end of the passive cylinder is connected to a rack, and the end of the worm is connected to a third gear meshing with the rack.

[0015] Furthermore, it also includes a calibration mechanism, which includes a grinding wheel dresser, which slides axially on the upper part of the grinding roller. After the placement plate moves over the lower part of the grinding roller, the grinding wheel dresser moves axially to correct the grinding roller.

[0016] Furthermore, the calibration mechanism also includes two N-shaped frames symmetrically arranged on both sides of the grinding frame, the N-shaped frame is connected to an active oil cylinder, the output end of the active oil cylinder is connected to the grinding frame, the upper part of the grinding frame is slidably connected to a cross bar, the cross bar is fixedly connected to a mounting block, a passive oil cylinder is connected between the mounting block and the grinding wheel dresser, and an oil pipe is connected between the active oil cylinder and the passive oil cylinder.

[0017] Furthermore, the calibration mechanism also includes two threaded rods coaxially connected to the grinding roller, the two threaded rods have opposite rotation directions, both ends of the cross rod are connected to electric telescopic rods, the output ends of the two electric telescopic rods are connected to semicircular rings, the inner walls of the two semicircular rings are respectively provided with threaded grooves matching the two threaded rods, and after the placement plate moves over the grinding roller, the electric telescopic rod away from the grinding frame is extended.

[0018] The beneficial effects of the present invention are analyzed as follows:

[0019] A grinding device for an electrostatic contact comprises a feeding mechanism, the feeding mechanism comprises a workbench, a pad is placed on the workbench, a placement plate is slidably connected thereto, a through groove for placing the electrostatic contact to be ground is opened on the placement plate, the pad is located at the lower part of the placement plate, a first table surface and a second table surface are arranged on the pad, the placement plate moves from the first table surface to the second table surface, so that the electrostatic contact to be ground rolls from the first table surface to the second table surface; a grinding mechanism is arranged on the workbench, when the electrostatic contact to be ground rolls on the first table surface, the axis of the electrostatic contact to be ground is parallel to the upper surface of the workbench, and when the electrostatic contact to be ground rolls on the second table surface, the line connecting the quadrant points of the electrostatic contact to be ground at both ends of the upper surface of the placement plate is parallel to the upper surface of the workbench, and after the electrostatic contact to be ground moves to the second table surface, the grinding mechanism grinds the electrostatic contact to be ground.

[0020] When in use, the conical electrostatic contact to be ground is placed in the through groove on the placement plate, and the placement plate moves from the first table surface to the second table surface. The placement plate slides on the workbench using a lead screw or an electric slider, and the intermittent movement of the placement plate is controlled by a control system, and each movement distance is equal to the spacing between two adjacent through grooves, so that multiple workpieces to be ground can be moved to the lower part of the grinding mechanism in turn for grinding. When the electrostatic contact to be ground follows the placement plate to move to the first table surface, the side wall of the electrostatic contact to be ground contacts the first table surface. At this time The electrostatic contact to be ground rolls on the first table surface following the movement of the placement plate. At this time, the axis of the electrostatic contact to be ground is parallel to the table surface of the workbench. The placement plate continues to move, which can drive the electrostatic contact to be ground to move to the second table surface. At this time, the axis of the electrostatic contact to be ground is tilted, and the line connecting the quadrant points of the electrostatic contact to be ground at both ends of the upper surface of the placement plate is parallel to the upper surface of the workbench. At this time, the electrostatic contact to be ground continues to rotate with its own axis, so that when it passes through the lower part of the grinding mechanism, the side wall can be evenly ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a cross-sectional view of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the feeding mechanism of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the cushion platform of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the present invention in which the electrostatic contact to be ground moves to the first table surface;

[0027] Figure 6 It is a structural schematic diagram of the present invention in which the electrostatic contact to be ground moves to the second table surface;

[0028] Figure 7 It is a schematic diagram of the structure of the chain of the present invention.

[0029] icon:

[0030] 100, feeding mechanism; 110, workbench; 120, pad; 121, first table; 122, second table; 130, placement plate; 131, clamping rod; 132, first gear; 133, through groove; 140, guide bar; 141, first guide groove; 142, second guide groove; 150, first limit plate; 160, second limit plate; 170, second gear; 180, chain; 200, grinding mechanism; 210, grinding frame; 220, grinding roller; 230, directional rod; 240, screw; 250, worm wheel; 260, worm; 270, third gear; 280, rack; 290, active cylinder; 291, air pipe; 292, passive cylinder; 300, calibration mechanism; 310, cross bar; 320, mounting block; 330, passive oil cylinder; 340, grinding wheel dresser; 350, n-shaped frame; 360, active oil cylinder; 361, oil pipe; 370, electric telescopic rod; 380, semicircular ring; 390, threaded rod. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Examples, such as Figure 1-Figure 7As shown, a grinding device for electrostatic contacts includes a feeding mechanism 100, the feeding mechanism 100 includes a workbench 110, a pad 120 is placed on the workbench 110, and a placement plate 130 is slidably connected, and a through groove 133 for placing the electrostatic contact to be ground is opened on the placement plate 130, the pad 120 is located at the lower part of the placement plate 130, and a first table 121 and a second table 122 are arranged on the pad 120, and the placement plate 130 moves from the first table 121 to the second table 122, so that the electrostatic contact to be ground is moved from the first table 121 to the second table 122. The first table 121 rolls to the second table 122; a grinding mechanism 200 is provided on the workbench 110, and when the electrostatic contact to be ground rolls on the first table 121, the axis of the electrostatic contact to be ground is parallel to the upper surface of the workbench 110, and when the electrostatic contact to be ground rolls on the second table 122, the line connecting the quadrant points of the electrostatic contact to be ground at both ends of the upper surface of the placement plate 130 is parallel to the upper surface of the workbench 110. After the electrostatic contact to be ground moves to the second table 122, the grinding mechanism 200 grinds the electrostatic contact to be ground.

[0035] The working mechanism of the grinding device provided in this embodiment is as follows:

[0036] When in use, the conical electrostatic contact to be ground is placed in the through groove 133 on the placement plate 130, and the placement plate 130 moves from the first table 121 to the second table 122. The placement plate 130 slides on the workbench 110 using a lead screw or an electric slider, and the placement plate 130 is controlled by the control system to intermittently move, and each movement distance is equal to the spacing between two adjacent through grooves 133, so that multiple workpieces to be ground can be moved to the lower part of the grinding mechanism 200 in turn to be ground. When the electrostatic contact to be ground follows the placement plate 130 to move to the first table 121, the side wall of the electrostatic contact to be ground and the first table 122 are aligned. 21 contact, at this time, the electrostatic contact to be ground follows the movement of the placement plate 130 and rolls on the first table 121, at this time, the axis of the electrostatic contact to be ground is parallel to the table of the workbench 110, the placement plate 130 continues to move, which can drive the electrostatic contact to be ground to move to the second table 122, at this time, the axis of the electrostatic contact to be ground is tilted, and the line connecting the quadrant points of the electrostatic contact to be ground at both ends of the upper surface of the placement plate 130 is parallel to the upper surface of the workbench 110, at this time, the electrostatic contact to be ground continues to rotate with its own axis, so that when it passes through the lower part of the grinding mechanism 200, the side wall can be evenly ground.

[0037] Regarding the structure of the feeding mechanism 100, specifically:

[0038] The feeding mechanism 100 also includes two first limit plates 150 and two second limit plates 160 symmetrically arranged on both sides of the placement plate 130. The first limit plate 150 on the same side is connected to the second limit plate 160. Two vertical grooves are symmetrically opened on both sides of the through groove 133 on the placement plate 130. Two clamping rods 131 are vertically slidably connected in the two vertical grooves. The ends of the clamping rods 131 are connected to the first gears 132. The spacing between the two first limit plates 150 is smaller than the spacing between the two second limit plates 160. When the placement plate 130 moves from the first limit plate 150 to the second limit plate 160, the two first gears 132 approach each other, so that the two clamping rods 131 clamp the electrostatic contact to be ground and the clamping rods 131 and the electrostatic contact to be ground are in a coaxial position.

[0039] When the electrostatic contact to be ground is located on the first table surface 121, the electrostatic contact to be ground is in a free state at this time. As the placement plate 130 continues to move, the first gear 132 moves from contacting the first limit plate 150 to contacting the second limit plate 160. Since the spacing between the two second limit plates 160 is smaller than the spacing between the two first limit plates 150, the two clamping rods 131 then approach each other to clamp the electrostatic contact to be ground. At this time, the clamping rod 131 and the electrostatic contact to be ground are in a coaxial position, so that the first gear 132 can drive the first gear 132 to rotate when it rotates, and when the placement plate 130 continues to move, the clamping rod 131 can drive the axis of the electrostatic contact to be ground to tilt synchronously, so that the quadrant point connecting the electrostatic contact to be ground at both ends of the upper surface of the placement plate 130 is parallel to the upper surface of the workbench 110.

[0040] The end of the clamping rod 131 is provided with a groove adapted to the end of the electrostatic contact, so as to ensure that after the clamping rod 131 clamps the electrostatic contact to be ground, the electrostatic contact to be ground and the clamping rod 131 are in a coaxial state.

[0041] Among the optional methods of this embodiment, the more preferred ones are:

[0042] The feeding mechanism 100 also includes a guide bar 140, in which a first guide groove 141 and a second guide groove 142 are connected. The groove wall of the first guide groove 141 is parallel to the first table surface 121, and the groove wall of the second guide groove 142 is parallel to the second table surface 122. Therefore, when the clamping rod 131 is located in the first guide groove 141, its axis is parallel to the first table surface 121, and when the clamping rod 131 is located in the second guide groove 142, its axis is parallel to the second table surface 122.

[0043] The length of the first table 121 is greater than the length of the first limit plate 150, so that the electrostatic contact to be ground will not move to the second table 122 until it is clamped by the clamping rod 131, and then the electrostatic contact to be ground and the clamping rod 131 are tilted synchronously, and the first guide groove 141 of the guide bar 140 guides the inclination of the clamping rod 131, so that the axis of the clamping rod 131 is parallel to the first table 121. When the clamping rod 131 moves to the second guide groove 142, the clamping rods 131 have been close to each other and firmly clamp the electrostatic contact to be ground. At this time, the second guide groove 142 guides the inclination of the clamping rod 131, so that the axis of the clamping rod 131 is parallel to the second table 122, thereby making the electrostatic contact to be ground tilt synchronously, which is convenient for subsequent grinding.

[0044] Among the optional methods of this embodiment, the more preferred ones are:

[0045] The feeding mechanism 100 also includes two second gears 170 rotatably connected to the second limiting plate 160 , and a chain 180 is transmission-connected between the two second gears 170 . When the placement plate 130 moves to the second limiting plate 160 , the multiple first gears 132 are driven to rotate by the chain 180 in turn.

[0046] The second gear 170 is driven to rotate by an external motor. As the placement plate 130 continues to move, the first gear 132 at the end of the clamping rod 131 can contact the chain 180 and engage with the chain 180. At this time, the chain 180 drives the first gear 132 to rotate, thereby enabling the electrostatic contact to be ground to rotate around its own axis, so that the conical side wall of the electrostatic contact to be ground can be fully ground.

[0047] Regarding the structure of the grinding mechanism 200, specifically:

[0048] The grinding mechanism 200 includes a grinding frame 210 , to which a grinding roller 220 is rotatably connected. The length of the grinding roller 220 is not less than the electrostatic contact to be ground.

[0049] The grinding roller 220 is set longer than the electrostatic contact to be ground, so that after the electrostatic contact moves over the lower part of the grinding roller 220, the two do not need to move relative to each other axially, and the grinding roller 220 can fully cover and grind the electrostatic contact to be ground.

[0050] Among the optional methods of this embodiment, the more preferred ones are:

[0051] The grinding mechanism 200 also includes a screw 240 connected to the bottom of the grinding frame 210. The lower surface of the workbench 110 is rotatably connected to a worm gear 250. A threaded hole that cooperates with the screw 240 is opened in the middle of the worm gear 250. The lower surface of the workbench 110 is rotatably connected to a worm 260 that meshes with the worm gear 250. When the placement plate 130 moves the distance between two adjacent through grooves 133, the worm gear 260 rotates to cause the grinding frame 210 to drop slightly.

[0052] In order to compensate for the loss of the grinding roller 220 during grinding, when the placement plate 130 moves the distance between two adjacent through grooves 133, the worm 260 rotates and drives the worm wheel 250 to rotate. At this time, the worm wheel 250 rotates relative to the screw 240, and the directional rod 230 connected to the lower part of the grinding frame 210 limits the running track of the grinding frame 210, so that the grinding frame 210 does not rotate, and then the screw 240 slides axially on the worm wheel 250, so that the grinding frame 210 can be slightly lowered, ensuring that the spacing with the next electrostatic contact to be ground is equal to the spacing with the previous one, ensuring the consistency of the grinding process;

[0053] The worm 260 is transmitted to the worm wheel 250, and then transmitted to the screw 240 through the worm wheel 250 for lifting and lowering, so that the transmission distance is shortened, and the transmission ratio of the worm wheel 250 and the worm 260 is designed according to the grinding wear degree of the grinding roller 220, or the rotation angle of the worm 260 is set according to the wear degree of the grinding roller 220 after each grinding, to ensure that the lifting height of the grinding frame 210 is more accurately controlled.

[0054] Among the optional methods of this embodiment, the more preferred ones are:

[0055] The grinding mechanism 200 also includes an active cylinder 290 and a passive cylinder 292 connected to the workbench 110, an air pipe 291 is connected between the active cylinder 290 and the passive cylinder 292, the output end of the active cylinder 290 is connected to the placement plate 130, the output end of the passive cylinder 292 is connected to the rack 280, and the end of the worm 260 is connected to the third gear 270 meshing with the rack 280.

[0056] When the placement plate 130 moves so that the electrostatic contacts to be ground are ground one by one, the placement plate 130 presses the active cylinder 290 at the same time, so that the length of the active cylinder 290 is shortened, so that the control inside the active cylinder 290 is transmitted to the passive cylinder 292 through the air pipe 291. At this time, the passive cylinder 292 extends, causing the rack 280 to slide, so that the rack 280 drives the third gear 270 to rotate, so that the worm 260 rotates. Here, the transmission ratio transmitted to the worm 260 to rotate can be changed by changing the inner diameter ratio of the active cylinder 290 and the passive cylinder 292.

[0057] Regarding the structure of the calibration mechanism 300, specifically:

[0058] The calibration mechanism 300 includes a grinding wheel dresser 340 , which slides axially on the upper part of the grinding roller 220 . After the placement plate 130 moves over the lower part of the grinding roller 220 , the grinding wheel dresser 340 moves axially to calibrate the grinding roller 220 .

[0059] The calibration mechanism 300 is set so that the flatness of the grinding roller 220 can be adjusted. When the placement plate 130 completely moves over the lower part of the grinding roller 220, the calibration mechanism 300 starts to operate, so that the grinding wheel dresser 340 moves axially to the upper part of the grinding roller 220, so that the grinding roller 220 is calibrated.

[0060] Among the optional methods of this embodiment, the more preferred ones are:

[0061] The calibration mechanism 300 also includes two n-shaped frames 350 symmetrically arranged on both sides of the grinding frame 210, and an active cylinder 360 is connected to the n-shaped frame 350, and the output end of the active cylinder 360 is connected to the grinding frame 210. A cross bar 310 is slidably connected to the upper part of the grinding frame 210, and a mounting block 320 is fixedly connected to the cross bar 310. A passive cylinder 330 is connected between the mounting block 320 and the grinding wheel dresser 340, and an oil pipe 361 is connected between the active cylinder 360 and the passive cylinder 330.

[0062] In the initial state, the bottom end of the grinding wheel dresser 340 is flush with the highest point of the horizontal grinding roller 220. When the grinding roller 220 grinds the electrostatic contact to be ground and gradually moves downward, the grinding frame 210 moves downward relative to the n-shaped frame 350. At this time, the active cylinder 360 is compressed, and the hydraulic oil is transmitted to the passive cylinder 330 through the oil pipe 361, so that the passive cylinder 330 is extended, so that the grinding wheel dresser 340 moves downward relative to the cross bar 310, so that after the diameter of the grinding roller 220 is reduced due to grinding consumption, the bottom end of the grinding wheel dresser 340 can still be close to the horizontal grinding roller 220, ensuring the stable calibration of the grinding roller 220.

[0063] Among the optional methods of this embodiment, the more preferred ones are:

[0064] The calibration mechanism 300 also includes two threaded rods 390 coaxially connected to the grinding roller 220. The two threaded rods 390 have opposite rotation directions. Both ends of the cross bar 310 are connected to electric telescopic rods 370. The output ends of the two electric telescopic rods 370 are connected to semicircular rings 380. The inner walls of the two semicircular rings 380 are respectively provided with threaded grooves that cooperate with the two threaded rods 390. After the placement plate 130 moves over the grinding roller 220, the electric telescopic rods 370 away from the grinding frame 210 extend.

[0065] One of the two threaded rods 390 is connected to an external motor, so that the threaded rod 390 and the grinding roller 220 are driven to rotate. The threaded rod 390 can be plugged into the middle of the grinding roller 220 by a key connection, so that the grinding roller 220 can be replaced after the threaded rod 390 is pulled out of the grinding frame 210 and the grinding roller 220.

[0066] After the placement plate 130 completely moves over the bottom of the grinding roller 220, the control system controls the electric telescopic rod 370 away from the grinding frame 210 to extend, and the semicircular ring 380 connected to the end of the electric telescopic rod 370 approaches and contacts the corresponding threaded rod 390. At this time, the rotating threaded rod 390 can drive the cross bar 310 to move through the thread groove on the semicircular ring 380, thereby causing the grinding wheel dresser 340 to move axially and dress the grinding roller 220. When the cross bar 310 moves to the end of the stroke, the control system controls the electric telescopic rod 370 in the extended state to shorten.

[0067] When the grinding roller 220 is trimmed next time, the electric telescopic rod 370 originally close to the grinding frame 210 is now close to the grinding frame 210. At this time, the electric telescopic rod 370 is extended, and the grinding roller 220 is always in a unidirectional rotation state, and the rotation directions of the two threaded rods 390 are opposite, so that the cross bar 310 can move in the opposite direction and reset, and the cycle is repeated in sequence until the grinding roller 220 is worn out and replaced.

[0068] The device is used to perform preliminary rough grinding on the cast electrostatic contacts, which greatly reduces the workload during mass production. The conical electrostatic contacts can be ground to a diameter close to the required diameter by simply placing the electrostatic contacts in the through slots 133 of the placement plate 130.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A grinding device for an electrostatic contact, characterized in that: The feeding mechanism (100) comprises a workbench (110), a pad (120) is placed on the workbench (110), and a placement plate (130) is slidably connected thereto, a through groove (133) is provided on the placement plate (130) for placing an electrostatic contact to be ground, the pad (120) is located at the lower part of the placement plate (130), a first table surface (121) and a second table surface (122) are provided on the pad (120), and the placement plate (130) moves in a direction from the first table surface (121) to the second table surface (122), so that the electrostatic contact to be ground rolls from the first table surface (121) to the second table surface (122); The workbench (110) is provided with a grinding mechanism (200); when the electrostatic contact to be ground rolls on the first table surface (121), the axis of the electrostatic contact to be ground is parallel to the upper surface of the workbench (110); and when the electrostatic contact to be ground rolls on the second table surface (122), the line connecting the quadrant points of the electrostatic contact to be ground located at both ends of the upper surface of the placement plate (130) is parallel to the upper surface of the workbench (110); after the electrostatic contact to be ground moves to the second table surface (122), the grinding mechanism (200) grinds the electrostatic contact to be ground.

2. The electrostatic contact grinding device according to claim 1, characterized in that: The feeding mechanism (100) also includes two first limit plates (150) and two second limit plates (160) symmetrically arranged on both sides of the placement plate (130), the first limit plate (150) and the second limit plate (160) on the same side are connected, and two vertical grooves are symmetrically opened on both sides of the through groove (133) on the placement plate (130), and two clamping rods (131) are vertically slidably connected in the two vertical grooves, and the ends of the clamping rods (131) are connected to the first gears (132), and the spacing between the two first limit plates (150) is smaller than the spacing between the two second limit plates (160). When the placement plate (130) moves from the first limit plate (150) to the second limit plate (160), the two first gears (132) approach each other, so that the two clamping rods (131) clamp the electrostatic contacts to be ground and the clamping rods (131) and the electrostatic contacts to be ground are in a coaxial position.

3. The electrostatic contact grinding device according to claim 2, characterized in that: The feeding mechanism (100) further comprises a guide bar (140), wherein a first guide groove (141) and a second guide groove (142) connected to each other are provided in the guide bar (140), wherein the groove wall of the first guide groove (141) is parallel to the first table surface (121), and the groove wall of the second guide groove (142) is parallel to the second table surface (122), so that when the clamping rod (131) is located in the first guide groove (141), its axis is parallel to the first table surface (121), and when the clamping rod (131) is located in the second guide groove (142), its axis is parallel to the second table surface (122).

4. The electrostatic contact grinding device according to claim 3, characterized in that: The feeding mechanism (100) further comprises two second gears (170) rotatably connected to the second limiting plate (160), a chain (180) being transmission-connected between the two second gears (170), and when the placement plate (130) moves to the second limiting plate (160), the plurality of first gears (132) are driven to rotate by the chain (180) in turn.

5. The electrostatic contact grinding device according to claim 4, characterized in that: The grinding mechanism (200) comprises a grinding frame (210), to which a grinding roller (220) is rotatably connected, and the length of the grinding roller (220) is not less than the electrostatic contact to be ground.

6. The electrostatic contact grinding device according to claim 5, characterized in that: The grinding mechanism (200) further comprises a screw (240) connected to the bottom of the grinding frame (210); a worm wheel (250) is rotatably connected to the lower surface of the workbench (110); a threaded hole matching the screw wheel (240) is provided in the middle of the worm wheel (250); a worm (260) meshing with the worm wheel (250) is rotatably connected to the lower surface of the workbench (110); when the placement plate (130) moves a distance equal to the spacing between two adjacent through grooves (133), the worm (260) rotates to cause the grinding frame (210) to drop slightly.

7. The electrostatic contact grinding device according to claim 6, characterized in that: The polishing mechanism (200) further comprises an active cylinder (290) and a passive cylinder (292) connected to the workbench (110); an air pipe (291) is connected between the active cylinder (290) and the passive cylinder (292); the output end of the active cylinder (290) is connected to the placement plate (130); the output end of the passive cylinder (292) is connected to a rack (280); and the end of the worm (260) is connected to a third gear (270) meshing with the rack (280).

8. The electrostatic contact grinding device according to claim 7, characterized in that: The invention also comprises a calibration mechanism (300), wherein the calibration mechanism (300) comprises a grinding wheel dresser (340), wherein the grinding wheel dresser (340) slides axially on the upper part of the grinding roller (220), and after the placement plate (130) moves over the lower part of the grinding roller (220), the grinding wheel dresser (340) moves axially to calibrate the grinding roller (220).

9. The electrostatic contact grinding device according to claim 8, characterized in that: The calibration mechanism (300) further comprises two n-shaped frames (350) symmetrically arranged on both sides of the grinding frame (210); an active oil cylinder (360) is connected to the n-shaped frame (350); an output end of the active oil cylinder (360) is connected to the grinding frame (210); a cross bar (310) is slidably connected to the upper part of the grinding frame (210); a mounting block (320) is fixedly connected to the cross bar (310); a passive oil cylinder (330) is connected between the mounting block (320) and the grinding wheel dresser (340); and an oil pipe (361) is connected between the active oil cylinder (360) and the passive oil cylinder (330).

10. The electrostatic contact grinding device according to claim 9, characterized in that: The calibration mechanism (300) further comprises two threaded rods (390) coaxially connected to the grinding roller (220), the two threaded rods (390) having opposite rotation directions, both ends of the cross bar (310) being connected to electric telescopic rods (370), the output ends of the two electric telescopic rods (370) being connected to semicircular rings (380), the inner walls of the two semicircular rings (380) being respectively provided with thread grooves cooperating with the two threaded rods (390), and after the placement plate (130) moves over the grinding roller (220), the electric telescopic rods (370) extending away from the grinding frame (210).

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