A double grinding head ring piece polisher

Abstract

The application relates to a double-grinding-head ring piece polisher, belonging to the technical field of flange machining, which comprises a base, a rotating table rotatably arranged at the upper end of the base, and a grinding mechanism arranged at the upper end of the rotating table; a clamping mechanism is arranged on the rotating table and comprises a second bidirectional air cylinder and four clamping blocks; the lower ends of the two clamping blocks on the outer side are fixedly provided with one connecting block respectively; the lower ends of the two clamping blocks on the inner side are fixedly provided with a group of hinge block groups; the hinge block groups on the same side are connected through elastic expansion rods; each elastic expansion rod is rotatably arranged on a rotating rod; the connecting rings on the two expansion ends of the second bidirectional air cylinder are connected with the two groups of hinge block groups through a first transmission mechanism and are connected with the two rotating rods through a second transmission mechanism; a lubricating mechanism is further arranged on the rotating table; the problems that the current single-grinding-head equipment has a long polishing machining period, limited production capacity and is difficult to adapt to the efficient production demand of batch precise ring workpieces are solved.

Description

Technical Field

[0001] This invention belongs to the field of flange processing technology, specifically relating to a double-grinding-head ring grinding machine. Background Technology

[0002] In the machining process of ring-shaped workpieces such as flanges and bearing rings, after blank forming, turning or heat treatment, burrs, oxide scale, machining marks and local scratches often remain on the surface of the workpiece. Defects must be removed and surface finish and dimensional accuracy improved through the grinding process in order to meet the assembly and use requirements.

[0003] Currently, grinding of ring-shaped workpieces mostly employs manual handheld grinding wheels or semi-automatic equipment with single grinding heads. Manual grinding relies on operator experience, resulting in high labor intensity, low efficiency, and difficulty in uniformizing grinding force and angle, easily leading to problems such as localized over-grinding, under-grinding, and uneven texture, resulting in poor workpiece consistency and a high scrap rate. Simultaneously, metal dust is directly dispersed, polluting the workshop environment and harming the health of operators. Single grinding head equipment can only grind one side or a portion at a time, with long processing cycles and limited capacity, making it difficult to meet the high-efficiency production demands of batch precision ring-shaped workpieces. Furthermore, traditional equipment generally lacks synchronous dust removal and fixed-point lubrication structures, allowing debris to accumulate and affecting machining accuracy. High frictional wear at clamping points can easily cause workpiece damage and premature fixture wear, increasing equipment maintenance and production costs. Summary of the Invention

[0004] This invention overcomes the shortcomings of the prior art and proposes a dual-grinding-head ring grinding machine; it solves the problems of long grinding cycles and limited capacity of current single-grinding-head equipment, which are difficult to adapt to the high-efficiency production needs of batch precision ring workpieces.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution.

[0006] A dual-grinding-head ring grinding machine includes a base, a rotating platform rotatably mounted on the upper end of the base, a connecting plate fixedly mounted on one side of the base, a sliding platform slidably mounted on the connecting plate, and a liftable grinding mechanism mounted on the sliding platform. The grinding mechanism includes two adjacent grinding heads. A clamping mechanism is mounted on the rotating platform, comprising a second bidirectional cylinder and four linearly arranged clamping blocks. A connecting block is fixedly mounted at the lower end of each of the two outer clamping blocks, and a set of hinge blocks is fixedly mounted at the lower end of each of the two inner clamping blocks. The hinge blocks on the same side are connected to the connecting blocks by elastic telescopic rods, each elastic telescopic rod being rotatably mounted on a rotating rod. A connecting ring is fixedly mounted at each of the two telescopic ends of the second bidirectional cylinder. The two connecting rings are simultaneously connected to the two sets of hinge blocks through a first transmission mechanism, and the two connecting rings are also connected to the two rotating rods through a second transmission mechanism. A lubrication mechanism is also mounted on the rotating platform, comprising a nozzle and a first oil tank. A nozzle is mounted on the clamping surface of each clamping block, and all nozzles are connected to the first oil tank.

[0007] Furthermore, a first servo motor is fixedly installed on the upper surface of the base, and the output shaft of the first servo motor is fixedly connected to the center of the lower surface of the rotating table.

[0008] Furthermore, the grinding mechanism includes a grinding table, a second servo motor, a transmission belt, a drive wheel, a tension wheel, and a grinding disc; the connecting plate and the sliding table are connected by a first hydraulic cylinder; the grinding table is slidably mounted vertically on the end face of the sliding table near the rotating table, and the grinding table is connected to the sliding table by the second hydraulic cylinder; the second servo motor is fixedly mounted on the grinding table, and two drive wheels are fixedly mounted on the output shaft of the second servo motor; two third sliders and two fourth sliders are slidably mounted on the grinding table; a tension wheel is rotatably mounted on the upper end of each third slider; a vertical transmission rod is rotatably mounted inside each fourth slider, a drive wheel is fixedly mounted on the upper end of the transmission rod, and a grinding disc is fixedly mounted on the lower end of the transmission rod; the two drive wheels are respectively connected to the tension wheels and drive wheels on both sides by transmission belts.

[0009] Furthermore, a dust collection mechanism is also provided on the rotating platform. The dust collection mechanism includes a double-layered top cover, a suction pipe, a connecting pipe, a storage box, and a fan. A double-layered top cover is fixedly installed at the upper opening of the rotating platform. Two dust collection grooves are provided on the upper cover plate of the double-layered top cover, and two clamping block sliding grooves are provided on the lower cover plate of the double-layered top cover. The two clamping block sliding grooves are located below the two dust collection grooves. A connecting cylinder is provided between the corresponding upper and lower dust collection grooves and clamping block sliding grooves. A storage box is fixedly installed inside the rotating platform. A fan is installed inside the storage box. A connecting pipe is fixedly installed at the upper opening of the storage box. A suction pipe is installed at both ends of the side wall of each connecting cylinder. One end of the suction pipe is connected to the inside of the connecting cylinder, and the other end of the suction pipe is connected to the inside of the connecting pipe.

[0010] Furthermore, the lubrication mechanism also includes a first support plate, a first bidirectional cylinder, and a push plate; the first support plate is fixedly installed inside the rotating table, and the first bidirectional cylinder is fixedly installed on the first support plate, with the two telescopic ends of the first bidirectional cylinder facing the upper and lower sides respectively; a first oil tank is respectively installed on the upper and lower sides of the first bidirectional cylinder, and a push plate is slidably installed inside each first oil tank, with the two telescopic ends of the first bidirectional cylinder fixedly connected to the two push plates respectively.

[0011] Furthermore, the lubrication mechanism also includes a first elastic hose, a second oil tank, a sliding seat, and a support block; two sliding seats are fixedly installed on the upper surface of the first support plate, and a sliding plate is slidably installed inside each sliding seat. Two second oil tanks are fixedly installed on each sliding plate. The four second oil tanks are located below the four clamping blocks respectively. The two second oil tanks on the same sliding plate are fixedly connected by a connecting rod, and a support block is fixedly installed in the middle of each connecting rod; the rodless cavity of the lower first oil tank is connected to the interior of the two outer second oil tanks through a first elastic hose, and the rodless cavity of the upper first oil tank is connected to the interior of the two inner second oil tanks through a first elastic hose; each second oil tank is connected to the nozzle on the corresponding clamping block through a second elastic hose.

[0012] Furthermore, the second transmission mechanism includes a third servo motor, a tensioning gear disc, a transmission gear disc, a transmission gear, a reversing gear, and a support rod. A tensioning gear disc is rotatably mounted on each connecting ring. A third support plate is fixedly mounted on the upper connecting ring. A third servo motor is fixedly mounted at the end of the third support plate. The output shaft of the third servo motor is fixedly connected to the upper tensioning gear disc. A support rod is fixedly mounted on the upper end of each support block. A rotating rod is rotatably mounted on the upper end of each of the two support rods. A transmission gear disc is fixedly sleeved on the outside of one rotating rod, and a reversing gear is fixedly sleeved on the outside of the other rotating rod. A third fixed rod is mounted on one side of the reversing gear. The lower end of the third fixed rod is fixedly connected to a sliding plate on the same side. A transmission gear disc is rotatably mounted on the upper end of the third fixed rod. A transmission gear is fixedly mounted at the end of the transmission gear disc, and the transmission gear meshes with the reversing gear. The same chain is sleeved on the outside of the two tensioning gear discs and the two transmission gear discs.

[0013] Furthermore, the hinge block assembly includes two hinge block units. Each hinge block unit has a set of action grooves on its side end face that is close to each other. An action rod is slidably arranged inside each set of action grooves. The two action rods are fixedly connected to each other in the middle by a second fixing rod. The lower ends of the two inner clamping blocks are fixedly connected to the hinge block units on the side of the connecting block in the two sets of hinge block assemblies that are close to the same side. The hinge block units on the side of the connecting block in the hinge block assembly that are close to the same side are rotatably connected to one end of the corresponding elastic telescopic rod, and the other end of the elastic telescopic rod is fixedly connected to the corresponding connecting block.

[0014] Furthermore, a second support plate is fixedly installed at the lower end of the double-layer top cover, and the second bidirectional cylinder is fixedly installed on the second support plate, with the two telescopic ends of the second bidirectional cylinder facing the upper and lower sides respectively.

[0015] Furthermore, the first transmission mechanism includes four support bars of equal length. One end of the two upper support bars is rotatably connected to the upper connecting ring, and the other end of the two upper support bars is rotatably connected to the hinge block unit on the side away from the connecting block in the two sets of hinge block groups. One end of the two lower support bars is rotatably connected to the lower connecting ring, and the other end of the two lower support bars is rotatably connected to the hinge block unit on the side away from the connecting block in the two sets of hinge block groups.

[0016] The beneficial effects of this invention compared to the prior art are as follows: (1) By adopting synchronous rotary grinding with dual grinding discs and a rotating table driven by the first servo motor to rotate at a constant speed of 360°, the ring workpiece is fully covered in the circumference and uniformly ground without dead angles, which effectively improves the processing efficiency compared with single grinding head equipment. The dual grinding discs are powered synchronously and fed in a consistent manner, which effectively avoids local over-grinding or under-grinding. The surface finish, dimensional consistency and geometric tolerance control accuracy of the workpiece are greatly improved, which meets the high standard processing requirements of precision ring workpieces such as flanges.

[0017] (2) By setting up a clamping mechanism, a reversing transmission composite structure is adopted, which is a combination of a second bidirectional cylinder and a first transmission mechanism and a second transmission mechanism. The clamping mode of the inner wall or the outer wall can be switched to adapt to the processing of ring workpieces with different inner and outer diameters. The clamping force is evenly distributed and the positioning center does not deviate, eliminating the problem of workpiece shaking, deviation and falling off during grinding, ensuring the dimensional stability of long-term continuous processing and reducing the scrap rate. The lubrication mechanism is synchronized with the clamping and grinding actions. The oil is sprayed onto the non-clamping area of ​​the workpiece for cooling through the nozzle at fixed points and in fixed quantities to avoid affecting the reliability of clamping.

[0018] (3) By setting up a dust collection mechanism, adopting a dust collection trough and a negative pressure adsorption structure of a fan, the grinding debris is collected and stored as it is produced, solving the problem of metal dust scattering and polluting the workshop and adhering to equipment, affecting the accuracy; there is no need for frequent manual cleaning of the work station, improving the operating environment, meeting the requirements of safe production and environmental protection, and reducing the harm of dust to the health of operators; the key transmission parts are equipped with tensioning wheels and tensioning gears to adjust the tension of the transmission belt and chain in real time, avoiding slippage, loosening, and loss of rotation, and ensuring continuous and stable power transmission; the core components are compactly laid out, well sealed and supported, the equipment has high stability in continuous operation, and daily maintenance is simple and convenient, resulting in lower overall operating costs. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connection between the sliding table and the connecting plate; Figure 3 This is a schematic diagram of the internal structure of the rotating platform; Figure 4 This is a schematic diagram of the vacuuming mechanism; Figure 5 This is a schematic diagram of the connection between the clamping mechanism and the lubrication mechanism. Figure 1 ; Figure 6 This is a schematic diagram of the lubrication mechanism; Figure 7 This is a schematic diagram showing the connection between the two clamping blocks on the same side and the two second oil tanks; Figure 8This is a schematic diagram of the connection between the clamping mechanism and the lubrication mechanism. Figure 2 ; Figure 9 This is a partial exploded view of the clamping mechanism; Among them, 100 is the base, 101 is the rotating table, 102 is the first servo motor, 103 is the connecting plate, 104 is the sliding table, 105 is the second servo motor, 106 is the transmission belt, 107 is the drive wheel, 108 is the tension wheel, and 109 is the grinding disc. 110 is the vacuuming mechanism, 111 is the double-layer top cover, 112 is the dust collection tray, 113 is the suction tube, 114 is the connecting tube, 115 is the storage box, and 116 is the fan. 120 is a lubrication mechanism, 121 is a first support plate, 122 is a first bidirectional cylinder, 123 is a first oil tank, 124 is a push plate, 125 is a first elastic hose, 126 is a second oil tank, 127 is a second elastic hose, 128 is a clamping block, 129 is a nozzle, 130 is a sliding seat, and 131 is a support block. 140 is the clamping mechanism, 141 is the second bidirectional cylinder, 142 is the connecting ring, 143 is the support bar, 144 is the hinge block assembly, 145 is the tensioning gear, 146 is the third servo motor, 147 is the chain, 148 is the reversing gear, 149 is the transmission gear, 150 is the support rod, 151 is the elastic telescopic rod, 152 is the connecting block, and 153 is the transmission gear. Detailed Implementation

[0020] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solutions of this invention are described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0021] like Figure 1As shown in Figure 9, this invention provides a dual-grinding-head ring grinding machine, including a base 100, a rotating table 101 rotatably mounted on the upper end of the base 100, a connecting plate 103 fixedly mounted on one side of the base 100, a sliding table 104 slidably mounted on the connecting plate 103, and a liftable grinding mechanism mounted on the sliding table 104, the grinding mechanism including two adjacent grinding heads; a clamping mechanism 140 mounted on the rotating table 101, the clamping mechanism 140 including a second bidirectional cylinder 141 and four linearly arranged clamping blocks 128, the lower ends of the two outer clamping blocks 128 respectively fixedly mounted with a connecting block 152, and the lower ends of the two inner clamping blocks 128 respectively fixedly mounted with a set of hinge blocks. Group 144, the hinge block group 144 on the same side is connected to the connecting block 152 by elastic telescopic rods 151, each elastic telescopic rod 151 is rotatably mounted on a rotating rod, a connecting ring 142 is fixedly mounted at each of the two telescopic ends of the second bidirectional cylinder 141, the two connecting rings 142 are simultaneously connected to the two groups of hinge block groups 144 through the first transmission mechanism, and the two connecting rings 142 are connected to the two rotating rods through the second transmission mechanism; a lubrication mechanism is also provided on the rotating table 101, the lubrication mechanism includes a nozzle 129 and a first oil tank 123, a nozzle 129 is mounted on the clamping surface of each clamping block 128, and all nozzles 129 are connected to the first oil tank 123.

[0022] The base 100 is a horizontally arranged circular platform. A recessed first mounting groove is provided at the center of the upper end face of the base 100. A first servo motor 102 is fixedly installed inside the first mounting groove. The output shaft of the first servo motor 102 is vertically upward and fixedly connected to the center of the lower end face of the rotating table 101. The rotation of the first servo motor 102 drives the rotating table 101 to rotate.

[0023] The connecting plate 103 includes a first vertical plate, a horizontal plate, and a second vertical plate. A first vertical plate is fixedly mounted on one side of the base 100. The second vertical plate is located above the first vertical plate on the side away from the rotating platform 101. One end of the horizontal plate is fixedly connected to the upper end of the first vertical plate, and the other end is fixedly connected to the lower end of the second vertical plate. A first sliding groove is provided on the upper surface of the horizontal plate, extending radially along the base 100. A sliding table 104 is slidably mounted on the upper surface of the horizontal plate, and a first slider is fixedly mounted on the lower surface of the sliding table 104, sliding within the first sliding groove. A first hydraulic cylinder is fixedly mounted on the end face of the second vertical plate near the rotating platform 101. The extension and retraction direction of the first hydraulic cylinder is parallel to the extension direction of the first sliding groove, and the extension and retraction end of the first hydraulic cylinder is fixedly connected to the sliding table 104. The extension and retraction of the first hydraulic cylinder drives the sliding table 104 and the grinding mechanism to slide radially along the base 100.

[0024] The grinding mechanism includes a grinding table, a second servo motor 105, a transmission belt 106, a drive wheel 107, a tensioning wheel 108, and a grinding disc 109.

[0025] A grinding table is vertically mounted on the end face of the sliding table 104 near the rotating table 101. A vertical second slide groove is provided on the end face of the sliding table 104. A second slider is fixedly mounted on the outer surface of the grinding table, and the second slider is slidably engaged inside the second slide groove. The stability of the grinding table during lifting and lowering is ensured by the cooperation between the second slider and the second slide groove. A second hydraulic cylinder is fixedly mounted on the upper end of the sliding table 104. The extension end of the second hydraulic cylinder is vertically downward and fixedly connected to the upper surface of the grinding table. The lifting and lowering of the grinding table is driven by the extension and retraction of the second hydraulic cylinder.

[0026] A second servo motor 105 is fixedly mounted on the grinding table. The output shaft of the second servo motor 105 points vertically downward, and two drive wheels are fixedly mounted on the output shaft of the second servo motor 105. A set of vertically penetrating third and fourth sliding grooves are provided on the grinding table, with the extension directions of the third and fourth sliding grooves perpendicular to the extension direction of the first sliding groove. Two third sliders are slidably mounted inside the third sliding groove, and two fourth sliders are slidably mounted inside the fourth sliding groove. A tensioning wheel 108 is rotatably mounted at the upper end of each third slider. A vertical transmission rod is rotatably mounted inside each fourth slider. The upper end of the transmission rod extends to the outer side of the upper end of the fourth slider and is fixedly mounted with a drive wheel 107. The lower end of the transmission rod extends to the outer side of the fourth slider and is fixedly mounted with a grinding disc 109. One drive wheel is connected to the tensioning wheel 108 and drive wheel 107 on one side via a transmission belt 106, and the other drive wheel is connected to the tensioning wheel 108 and drive wheel 107 on the other side via a transmission belt 106.

[0027] When the second servo motor 105 drives the two drive wheels to rotate synchronously, the two drive belts 106 drive the two drive wheels 107 to rotate synchronously. The two drive wheels 107 drive the two grinding discs 109 to rotate synchronously via the transmission rod. When it is necessary to adjust the distance between the two grinding discs 109, the two fourth sliders are controlled to slide inside the fourth groove on the grinding table, thereby adjusting the distance between the two grinding discs 109. After the adjustment is completed, the fourth sliders are locked to the fourth groove. Then, the two third sliders are controlled to slide inside the third groove on the grinding table, thereby moving the two tensioning wheels 108 until the tensioning wheels 108 tighten the transmission belt 106 again. At this time, the third sliders are locked to the third groove, thus completing the adjustment of the distance between the two grinding discs 109.

[0028] A dust collection mechanism 110 is also provided on the rotating platform 101. The dust collection mechanism 110 includes a double-layer top cover 111, a suction pipe 113, a connecting pipe 114, a storage box 115, and a fan 116.

[0029] A double-layered top cover 111 is fixedly installed at the opening at the upper end of the rotating platform 101. Two symmetrical rectangular dust collection troughs 112 are provided on the upper cover plate of the double-layered top cover 111, and two symmetrical rectangular clamping block grooves are provided on the lower cover plate of the double-layered top cover 111. The two clamping block grooves are located below the two dust collection troughs 112. A connecting cylinder is provided between the corresponding dust collection troughs 112 and the clamping block grooves. The connecting cylinder is a rectangular cylindrical structure with openings at both the upper and lower ends, and the openings at the upper and lower ends of the connecting cylinder are fixedly connected to the upper cover plate and the lower cover plate of the double-layered top cover, respectively.

[0030] A storage box 115 is fixedly installed inside the rotating platform 101. A fan 116 is installed inside the storage box 115. A connecting pipe 114 is fixedly installed at the upper opening of the storage box 115. A suction tube 113 is installed at both ends of the side wall of each connecting tube. One end of the suction tube 113 is connected to the inside of the connecting tube, and the other end of the suction tube 113 is connected to the inside of the connecting pipe 114.

[0031] The lubrication mechanism 120 also includes a first support plate 121, a first bidirectional cylinder 122, a push plate 124, a first elastic hose 125, a second oil tank 126, a second elastic hose 127, a sliding seat 130, and a support block 131.

[0032] A horizontal first support plate 121 is fixedly installed inside the rotating platform 101, located below the double-layer top cover 111. A first bidirectional cylinder 122 is fixedly installed at the center of the first support plate 121, with its two telescopic ends facing the upper and lower sides respectively. A first oil tank 123 is installed on the upper and lower sides of the first bidirectional cylinder 122, respectively. The upper oil tank 123 is fixedly connected to the first support plate 121 via a support leg, and the lower oil tank 123 is fixedly connected to the bottom surface inside the rotating platform 101. The ends of both oil tanks 123 facing the first bidirectional cylinder 122 are open. Inside each oil tank 123, a horizontal push plate 124 is slidably installed along the vertical direction, with the outer edge of the push plate 124 in sliding contact with the inner wall of the oil tank 123. The two telescopic ends of the first bidirectional cylinder 122 extend into the two first oil tanks 123 respectively and are fixedly connected to the two push plates 124 respectively. The telescopic movement of the first bidirectional cylinder 122 drives the two push plates 124 to slide simultaneously inside the two first oil tanks 123.

[0033] Two sliding seats 130 are fixedly installed on the upper surface of the first support plate 121. The two sliding seats 130 are located on both sides of the first bidirectional cylinder 122. Each sliding seat 130 has a sliding plate inside, and the sliding direction of the sliding plate is parallel to the arrangement direction of the four clamping blocks 128. Two second oil tanks 126 are fixedly installed on each sliding plate. The four second oil tanks 126 are located below the four clamping blocks 128. The two second oil tanks 126 on the same sliding plate are fixedly connected by a horizontal connecting rod. A support block 131 is fixedly installed in the middle of each connecting rod. The rodless chamber of the lower first oil tank 123 is connected to the interior of the two outer second oil tanks 126 through a first elastic hose 125. The rodless chamber of the upper first oil tank 123 is connected to the interior of the two inner second oil tanks 126 through a first elastic hose 125. Each second oil tank 126 is connected to the nozzle 129 on the corresponding clamping block 128 through a second elastic hose 127.

[0034] The rodless chamber of the first oil tank 123 and the second oil tank 126 contain lubricating fluid.

[0035] The upper ends of the two clamping blocks 128 on the same side extend upwards into the clamping block grooves on the same side, so that the two clamping blocks 128 on the same side slide within the corresponding clamping block grooves. Furthermore, the clamping surfaces of the two clamping blocks 128 on the same side face each other, and an anti-slip pad is fixedly provided on the clamping surface of each clamping block 128.

[0036] A second support plate is provided on the upper inner side of the rotating platform 101. The second support plate is fixed to the lower end face of the double-layer top cover 111 by four vertical first fixing rods. The second bidirectional cylinder 141 is fixedly installed on the second support plate. The second bidirectional cylinder 141 is located above the first oil tank 123, and its two telescopic ends face the upper and lower sides respectively. The connecting ring 142 is a cylindrical structure with open ends.

[0037] The hinge block assembly 144 includes two hinge block units. Each hinge block unit has a set of action grooves on its adjacent end faces. An action rod is slidably mounted inside each action groove, and the two action rods are fixedly connected at their midpoints by a second fixing rod. When the action rod slides within its corresponding action groove, it can also slide relative to the hinge block unit, allowing the two hinge block units to rotate relative to each other and move closer or further apart. The lower ends of the two inner clamping blocks 128 are fixedly connected to the hinge block units on the same side of the connecting block 152 in the two hinge block assemblies 144. Furthermore, the hinge block units on the same side of the connecting block 152 in the hinge block assembly 144 are rotatably connected to one end of the corresponding elastic telescopic rod 151, and the other end of the elastic telescopic rod 151 is fixedly connected to the corresponding connecting block 152.

[0038] The first transmission mechanism includes four support bars 143 of equal length. One end of the upper two support bars 143 is rotatably connected to the upper connecting ring 142, and the other end of the upper two support bars 143 is rotatably connected to the hinge block unit on the side of the connecting block 152 away from the same side in the two sets of hinge block groups 144. One end of the lower two support bars 143 is rotatably connected to the lower connecting ring 142, and the other end of the lower two support bars 143 is rotatably connected to the hinge block unit on the side of the connecting block 152 away from the same side in the two sets of hinge block groups 144. The hinge points when two support bars 143 are simultaneously hinged to the same hinge block unit are distributed vertically.

[0039] The four support bars 143 form a rhomboid linkage mechanism. When the two telescopic ends of the second bidirectional cylinder 141 extend outward and drive the two connecting rings 142 to move away from each other, under the action of the four support bars 143, the two sets of hinge blocks 144 move closer to each other, and at the same time, the clamping blocks 128 on both sides also move closer to each other. When the two telescopic ends of the second bidirectional cylinder 141 retract inward and drive the two connecting rings 142 to move closer to each other, under the action of the four support bars 143, the two sets of hinge blocks 144 move away from each other, and at the same time, the clamping blocks 128 on both sides also move away from each other.

[0040] The second transmission mechanism includes a third servo motor 146, a tensioning gear 145, a transmission gear 149, a transmission gear 153, a reversing gear 148, and a support rod 150.

[0041] A tensioning gear 145 is rotatably mounted on each connecting ring 142. A horizontal third support plate is also fixedly mounted on the upper connecting ring 142. A third servo motor 146 is fixedly mounted at the end of the third support plate. The output shaft of the third servo motor 146 is fixedly connected to the upper tensioning gear 145. The upper tensioning gear 145 is rotated by the third servo motor 146.

[0042] A vertical support rod 150 is fixedly installed on the upper end of each support block 131. A rotating rod is rotatably mounted on the upper end of each of the two support rods 150, keeping the rotating rods horizontal and their axes perpendicular to the axis of the elastic telescopic rod 151. A transmission gear 149 is fixedly sleeved on the outside of one rotating rod, and a reversing gear 148 is fixedly sleeved on the outside of the other rotating rod. A vertical third fixed rod is installed on one side of the reversing gear 148, with its lower end fixedly connected to the upper surface of the slide plate on the same side. A transmission gear 149 is rotatably mounted on the upper end of the third fixed rod, and a transmission gear 153 is fixedly mounted on the end of the transmission gear 149, meshing with the reversing gear 148. A single chain 147 is sleeved on the outside of the two tensioning gears 145 and the two transmission gears 149.

[0043] The working principle of this invention is as follows: Before the operation begins, the annular workpiece to be processed is placed stably in the center area of ​​the upper surface of the double-layer top cover 111 on the top of the rotating table 101, ensuring that the annular workpiece is precisely aligned with the grinding station. At this time, the first bidirectional cylinder 122 is in the retracted state, so that lubricating fluid is sprayed outward without passing through the nozzle 129. The second bidirectional cylinder 141 is in the initial state, and the side wall of the annular workpiece is located between the two clamping blocks 128 on the same side.

[0044] When grinding is required on the outer surface of the ring-shaped workpiece, the third servo motor 146 is controlled to rotate forward. The third servo motor 146 drives the upper tensioning gear 145 to rotate forward. The upper tensioning gear 145 drives the lower tensioning gear 145 and the two transmission gears 149 to rotate forward synchronously via the chain 147. The first transmission gear 149 drives the first rotating rod to rotate forward, and the first rotating rod drives the first elastic telescopic rod 151 to rotate forward, so that the first elastic telescopic rod 151 rotates around the rotating rod in the forward direction. The second transmission gear 149 drives the transmission gear 153 fixedly connected to it to rotate forward. The transmission gear 153 drives the reversing gear 148 meshing with it to rotate in the reverse direction. The reversing gear 148 drives the second rotating rod to rotate in the reverse direction, and the second rotating rod drives the elastic telescopic rod 151 to rotate in the reverse direction, so that the second elastic telescopic rod 151 rotates around the rotating rod in the reverse direction. The two elastic telescopic rods 151 rotate in opposite directions, causing each rod to drive the individual hinge blocks in the hinge block assembly 144, which is hinged to one end, to rotate upwards. Simultaneously, each rod drives the connecting block 152, which is fixedly connected to its other end, to rotate downwards. This causes the two inner clamping blocks 128 to extend upwards to the outer side of the upper surface of the rotating platform 101, while the two outer clamping blocks 128 extend downwards through the clamping block grooves into the interior of the rotating platform 101. During this process, the elastic telescopic rods 151 are gradually stretched elastically. Since the two telescopic ends of the second bidirectional cylinder 141 do not move, the two connecting rings 142 remain fixed. Under the action of the four support bars 143, the individual hinge blocks on the side of the two hinge block assemblies 144 furthest from the connecting block 152 on the same side also remain fixed, resulting in a misalignment of the relative positions and angles of the two individual hinge blocks in each hinge block assembly 144.

[0045] Then, the two telescopic ends of the second bidirectional cylinder 141 are controlled to retract inward simultaneously, causing the two connecting rings 142 to move closer together. The connecting rings 142 then cause the two tensioning gears 145 to move closer together. Under the action of the four support bars 143, the two sets of hinge blocks 144 are moved away from each other, thereby causing the two inner clamping blocks 128 to move away from each other. The two sets of hinge blocks 144 cause the two elastic telescopic rods 151 to move away from each other, and the two elastic telescopic rods 151 cause the two connecting blocks 152 and the two outer clamping blocks 128 to move away from each other. Two elastic telescopic rods 151 drive two rotating rods to move away from each other. These rotating rods, in turn, drive two support rods 150 to move away from each other. Simultaneously, the rotating rods drive the reversing gear 148 to move away from the transmission gear 149 on the other side. The two support rods 150 drive two support blocks 131 to move away from each other. Each support block 131, via a connecting rod, drives two second oil tanks 126 on the same side to slide synchronously. The two second oil tanks 126 drive their lower slide plates to slide within corresponding sliding seats 130, thus causing the two second oil tanks 126 on one side to move away from each other. As the slide plates slide, they drive the third fixed rod at its upper end to slide synchronously. The third fixed rod then drives the transmission gear 153 at its upper end to slide synchronously. Therefore, the transmission gear 153 and the reversing gear 148 slide synchronously and remain engaged. The transmission gear 153 drives the transmission gear 149, which is fixedly connected to it, to slide synchronously. Thus, the two transmission gears 149 also move away from each other, thereby controlling the chain 147 to remain taut at all times. The two inner clamping blocks 128 move closer to each other until they make stable contact with the inner surface of the annular workpiece, thereby stably clamping the annular workpiece through the two inner clamping blocks.

[0046] Then, control the first hydraulic cylinder to retract to drive the two grinding discs 109 to move horizontally, and control the second hydraulic cylinder to retract to drive the two grinding discs 109 to rise and fall vertically until both grinding discs 109 are in stable contact with the outer surface of the annular workpiece.

[0047] Then, the first servo motor 102 and the second servo motor 105 are controlled to start rotating. The first servo motor 102 drives the rotating table 101 to rotate stably. The rotating table 101 drives the ring workpiece to rotate stably through the clamping mechanism 140. The second servo motor 105 drives the two grinding discs 109 to rotate synchronously. The two grinding discs 109 in rotation grind the outer side of the rotating ring workpiece.

[0048] During the grinding process, the two telescopic ends of the first bidirectional cylinder 122 extend outward simultaneously, causing the two push plates 124 to move away from each other. The two push plates 124 slide inside the corresponding first oil tanks 123, compressing the rodless cavities inside the two first oil tanks 123, reducing the volume of the rodless cavities. The lubricant inside the rodless cavities of the first oil tanks 123 is then squeezed into the second oil tank 126 through the first elastic hose 125. The lubricant inside the second oil tank 126 is then squeezed into the nozzle 129 through the second elastic hose 127, and thus sprayed outward through the nozzle 129. Lubricating fluid is sprayed to cool the non-clamping area of ​​the ring-shaped workpiece, preventing any impact on clamping reliability. Simultaneously, metal shavings and dust generated during grinding fall directly into the dust collection grooves 112 on both sides of the double-layer top cover 111. The fan 116 inside the storage box 115 operates at high speed to generate strong negative pressure, which quickly sucks the shavings and dust into the storage box 115 through the suction pipe 113 and connecting pipe 114 for centralized storage, preventing dust from scattering and polluting the workshop environment or adhering to the inside of the equipment and affecting operating accuracy. The storage box 115 can be opened and cleaned periodically to ensure a continuous and stable dust collection effect.

[0049] After the outer surface of the annular workpiece is ground, the first servo motor 102, the second servo motor 105, and the fan 116 are stopped, and the first bidirectional cylinder 122 stops operating. Then, the first and second hydraulic cylinders are extended and retracted to drive the two grinding discs 109 back to their initial positions. Next, the two extension ends of the second bidirectional cylinder 141 are extended outward, causing the two connecting rings 142 to move away from each other. The two connecting rings 142, through four support bars 143, drive the two sets of hinge blocks 144 to move closer together. The two sets of hinge blocks 144 drive the two inner clamping blocks 128 to move closer together and disengage from the inner surface of the annular workpiece. The two sets of hinge blocks 144, through the elastic telescopic rod 151, drive the two connecting blocks 152 to move closer together. The two connecting blocks 152 drive the two outer clamping blocks 128 to move closer together. This continues until the two inner clamping blocks 128 and the two outer clamping blocks 128 have returned to their initial positions. The two elastic telescopic rods 151 drive the two support rods 150, the third fixed rod, the two slide plates, the second oil tanks 126 on both sides, the reversing gear 148, the transmission gear 153, and the two transmission gear discs 149 back to their initial positions, and the chain 147 returns to its initial state. Then, the third servo motor 146 is controlled to rotate in the opposite direction, driving the two inner clamping blocks 128 to rotate downwards and the two outer clamping blocks 128 to rotate upwards, until all clamping blocks 128 return to the same height.

[0050] When grinding is required on the inner surface of the annular workpiece, the third servo motor 146 is controlled to rotate in the reverse direction. Following the above process, the two inner clamping blocks 128 rotate downwards, and the two outer clamping blocks 128 rotate upwards. This causes the two outer clamping blocks 128 to extend upwards to the outer side of the upper end face of the rotating table 101, while simultaneously causing the two inner clamping blocks 128 to extend downwards through the clamping block grooves into the interior of the rotating table 101. Then, the two telescopic ends of the second bidirectional cylinder 141 are controlled to extend outwards simultaneously, causing the two connecting rings 142 to move away from each other. The two connecting rings 142, through four support bars 143, cause the two sets of hinge block groups 144 to move closer together. The two sets of hinge block groups 144 cause the two inner clamping blocks 128 to move closer together. The two sets of hinge block groups 144, through the elastic telescopic rod 151, cause the two connecting blocks 152 to move closer together. The two connecting blocks 152 cause the two outer clamping blocks 128 to move closer together, until the two outer clamping blocks 128 are in stable contact with the outer surface of the annular workpiece. Then repeat the above grinding process to grind the inner surface of the annular workpiece. After grinding is completed, return the clamping mechanism 140 to its initial state.

[0051] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A dual-grinding-head ring grinding machine, characterized in that: The system includes a base (100), a rotating platform (101) rotatably mounted on the upper end of the base (100), a connecting plate (103) fixedly mounted on one side of the base (100), a sliding platform (104) slidably mounted on the connecting plate (103), and a lifting grinding mechanism mounted on the sliding platform (104). The grinding mechanism includes two adjacent grinding heads. A clamping mechanism (140) is mounted on the rotating platform (101). The clamping mechanism (140) includes a second bidirectional cylinder (141) and four linearly arranged clamping blocks (128). A connecting block (152) is fixedly mounted on the lower end of the two outer clamping blocks (128), and a set of hinge blocks (144) is fixedly mounted on the lower end of the two inner clamping blocks (128). The group (144) and the connecting block (152) are connected by elastic telescopic rods (151). Each elastic telescopic rod (151) is rotatably mounted on a rotating rod. A connecting ring (142) is fixedly installed at each of the two telescopic ends of the second bidirectional cylinder (141). The two connecting rings (142) are simultaneously connected to the two groups of hinge blocks (144) through the first transmission mechanism, and the two connecting rings (142) are connected to the two rotating rods through the second transmission mechanism. A lubrication mechanism is also provided on the rotating table (101). The lubrication mechanism includes a nozzle (129) and a first oil tank (123). A nozzle (129) is installed on the clamping surface of each clamping block (128), and all nozzles (129) are connected to the first oil tank (123).

2. The dual-grinding-head ring grinding machine according to claim 1, characterized in that: A first servo motor (102) is fixedly installed on the upper surface of the base (100), and the output shaft of the first servo motor (102) is fixedly connected to the center of the lower surface of the rotating table (101).

3. The dual-grinding-head ring grinding machine according to claim 1, characterized in that: The grinding mechanism includes a grinding table, a second servo motor (105), a transmission belt (106), a drive wheel (107), a tensioning wheel (108), and a grinding disc (109); a connecting plate (103) and a sliding table (104) are connected by a first hydraulic cylinder; a grinding table is slidably mounted on the end face of the sliding table (104) near the rotating table (101) in the vertical direction, and the grinding table and the sliding table (104) are connected by a second hydraulic cylinder; a second servo motor (105) is fixedly mounted on the grinding table, and the second servo motor (105) is used to drive the grinding disc (109). Two drive wheels are fixedly mounted on the output shaft of the servo motor (105); two third sliders and two fourth sliders are slidably mounted on the grinding table; a tension wheel (108) is rotatably mounted on the upper end of each third slider; a vertical transmission rod is rotatably mounted inside each fourth slider, a drive wheel (107) is fixedly mounted on the upper end of the transmission rod, and a grinding disc (109) is fixedly mounted on the lower end of the transmission rod; the two drive wheels are connected to the tension wheels (108) and drive wheels (107) on both sides respectively via a transmission belt (106).

4. A dual-grinding-head ring grinding machine according to claim 1, characterized in that: A dust collection mechanism (110) is also provided on the rotating platform (101). The dust collection mechanism (110) includes a double-layer top cover (111), a suction pipe (113), a connecting pipe (114), a storage box (115), and a fan (116). A double-layer top cover (111) is fixedly provided at the upper opening of the rotating platform (101). Two dust collection grooves (112) are provided on the upper cover plate of the double-layer top cover (111), and two clamping block sliding grooves are provided on the lower cover plate of the double-layer top cover (111). The two clamping block sliding grooves are respectively located in the two dust collection grooves (112). 12) Below; A connecting cylinder is provided between the corresponding dust collection trough (112) and the clamping block slide groove. A storage box (115) is fixedly provided inside the rotating table (101). A fan (116) is installed inside the storage box (115). A connecting pipe (114) is fixedly provided at the upper opening of the storage box (115). A suction pipe (113) is installed at both ends of the side wall of each connecting cylinder. One end of the suction pipe (113) is connected to the inside of the connecting cylinder, and the other end of the suction pipe (113) is connected to the inside of the connecting pipe (114).

5. A dual-grinding-head ring grinding machine according to claim 4, characterized in that: The lubrication mechanism (120) further includes a first support plate (121), a first bidirectional cylinder (122), and a push plate (124). The first support plate (121) is fixedly installed inside the rotating table (101), and the first bidirectional cylinder (122) is fixedly installed on the first support plate (121). The two telescopic ends of the first bidirectional cylinder (122) face the upper and lower sides respectively. A first oil tank (123) is provided on the upper and lower sides of the first bidirectional cylinder (122). A push plate (124) is slidably installed inside each first oil tank (123). The two telescopic ends of the first bidirectional cylinder (122) are fixedly connected to the two push plates (124) respectively.

6. A dual-grinding-head ring grinding machine according to claim 5, characterized in that: The lubrication mechanism (120) further includes a first elastic hose (125), a second oil tank (126), a second elastic hose (127), a sliding seat (130), and a support block (131). Two sliding seats (130) are fixedly installed on the upper surface of the first support plate (121). Each sliding seat (130) has a sliding plate inside it, and two second oil tanks (126) are fixedly installed on each sliding plate. The four second oil tanks (126) are located below the four clamping blocks (128), and the two second oil tanks (126) on the same sliding plate are connected by a sliding plate. The connecting rods are fixedly connected, and a support block (131) is fixedly installed in the middle of each connecting rod; the rodless cavity of the lower first oil tank (123) is connected to the inside of the two outer second oil tanks (126) through a first elastic hose (125), and the rodless cavity of the upper first oil tank (123) is connected to the inside of the two inner second oil tanks (126) through a first elastic hose (125); each second oil tank (126) is connected to the nozzle (129) on the corresponding clamp (128) through a second elastic hose (127).

7. A dual-grinding-head ring grinding machine according to claim 6, characterized in that: The second transmission mechanism includes a third servo motor (146), a tensioning gear disc (145), a transmission gear disc (149), a transmission gear (153), a reversing gear (148), and a support rod (150). A tensioning gear disc (145) is rotatably mounted on each connecting ring (142). A third support plate is also fixedly mounted on the upper connecting ring (142). A third servo motor (146) is fixedly mounted at the end of the third support plate. The output shaft of the third servo motor (146) is fixedly connected to the upper tensioning gear disc (145). A support rod (150) is fixedly mounted on the upper end of each support block (131). Two support rods (150) are fixedly mounted on the upper end of each support block (131). 0) A rotating rod is rotatably provided at the upper end of each of the above-mentioned rotating rods. A transmission gear (149) is fixedly sleeved on the outside of one of the rotating rods, and a reversing gear (148) is fixedly sleeved on the outside of the other rotating rod. A third fixed rod is provided on one side of the reversing gear (148). The lower end of the third fixed rod is fixedly connected to the slide plate on the same side. A transmission gear (149) is rotatably provided at the upper end of the third fixed rod. A transmission gear (153) is fixedly provided at the end of the transmission gear (149). The transmission gear (153) meshes with the reversing gear (148). The same chain (147) is sleeved on the outside of the two tensioning gears (145) and the two transmission gears (149).

8. A dual-grinding-head ring grinding machine according to claim 7, characterized in that: The hinge block assembly (144) includes two hinge block units. Each hinge block unit has a set of action grooves on its side end face that is close to each other. Each set of action grooves has an action rod slidably installed inside. The two action rods are fixedly connected to each other in the middle by a second fixing rod. The lower ends of the two inner clamping blocks (128) are fixedly connected to the hinge block units on the side of the connecting block (152) on the same side of the two hinge block assemblies (144). The hinge block units on the side of the connecting block (152) on the same side of the hinge block assembly (144) are rotatably connected to one end of the corresponding elastic telescopic rod (151). The other end of the elastic telescopic rod (151) is fixedly connected to the corresponding connecting block (152).

9. A dual-grinding-head ring grinding machine according to claim 8, characterized in that: A second support plate is fixedly installed at the lower end face of the double-layer top cover (111), and the second bidirectional cylinder (141) is fixedly installed on the second support plate. The two telescopic ends of the second bidirectional cylinder (141) are respectively facing the upper and lower sides.

10. A dual-grinding-head ring grinding machine according to claim 9, characterized in that: The first transmission mechanism includes four support bars (143) of equal length. One end of the two upper support bars (143) is rotatably connected to the upper connecting ring (142), and the other end of the two upper support bars (143) is rotatably connected to the hinge block unit on the side away from the same side of the connecting block (152) in the two sets of hinge block groups (144). One end of the two lower support bars (143) is rotatably connected to the lower connecting ring (142), and the other end of the two lower support bars (143) is rotatably connected to the hinge block unit on the side away from the same side of the connecting block (152) in the two sets of hinge block groups (144).

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