A high-precision CNC vertical gear grinding machine

Abstract

The present invention relates to the technical field of gear grinding machines, and in particular to a high-precision CNC vertical gear grinding machine, comprising: a bed; a support frame, the support frame is movably arranged on the bed along the X-axis direction; a lifting plate, the lifting plate is movably arranged on the support frame along the Z-axis direction; a rotating mechanism, the rotating mechanism is arranged on the lifting plate; a support plate, the support plate is arranged on the rotating mechanism; a grinding wheel frame, the grinding wheel frame is movably arranged on the support plate along the Y-axis direction, and it comprises a frame body and a left connecting seat and a right connecting seat fixed on the frame body; a worm-type grinding wheel, the worm-type grinding wheel is rotatably connected between the left connecting seat and the right connecting seat, wherein an eccentric block is fixed to the left end portion of the worm-type grinding wheel, a spring block structure is arranged below the eccentric block, and a cleaning mechanism is arranged on the left front of the right connecting seat. The present invention realizes intermittent pause of the worm-type grinding wheel during grinding by arranging the eccentric block and the spring block structure, and realizes cleaning of metal debris adhered to the tooth groove wall by arranging the cleaning mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of gear grinding machines, and in particular to a high-precision CNC vertical gear grinding machine. Background Art

[0002] Gear grinding machines are gear processing machines that use grinding wheels as grinding tools to process cylindrical gears or certain gears (helical gears, bevel gears, etc.) and tool tooth surfaces. They are mainly used to eliminate deformation after heat treatment and improve gear accuracy. In the prior art, when grinding gears, worm-type grinding wheels that match the gears are often used to grind the gears, so that the worm-type grinding wheels can mesh with the gears to grind the gears, making the grinding of the gears more comprehensive. For example, the patent with application number CN202210703927.6 discloses a worm wheel gear grinder, which grinds gears with a worm-type grinding wheel. Although the gears can be fully ground, the following problems still exist in the grinding process: during grinding, the ground metal debris often adheres to the tooth groove wall between the teeth. Although there is an oil pipe to spray grinding oil at the grinding point during grinding, the worm-type grinding wheel and the gear are meshed for grinding. Therefore, the ground metal debris is easily sandwiched between the worm-type grinding wheel and the gear during grinding and cannot be washed off by the grinding oil, and then adheres to the tooth groove wall. The metal debris adhered to the tooth groove wall will be carried to the next round of grinding, and the metal debris adhered to the tooth groove wall will seriously affect the grinding effect, because the metal debris directly blocks the contact between the worm-type grinding wheel and the gear, so it will greatly reduce the grinding effect of the gear. If the metal debris adhering to the tooth groove wall is not dealt with in time, it will accumulate more and more, and the final grinding effect of the gear will naturally be very poor. Therefore, there is an urgent need for a grinding wheel spindle structure that can clean up the metal debris on the tooth groove wall in time during the grinding process, so that the metal debris adhering to the tooth groove wall will not accumulate in the next round of grinding, thereby improving the grinding effect of the gear. In addition, the grinding wheel assembly in this patent cannot adjust the position on the X-axis, Y-axis and Z-axis, and there are certain limitations. There is no grinding wheel correction mechanism in this patent that can correct the worn grinding wheel in time, so its structure is not yet perfect. Summary of the invention

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies of the prior art, the present invention aims to provide a high-precision CNC vertical gear grinding machine, which solves the problems existing in the prior art. The present invention realizes the intermittent pause of the worm-type grinding wheel during the grinding process by setting the eccentric block and the spring block structure. During this intermittent pause, the metal debris adhering to the tooth groove wall is cleaned by setting the cleaning mechanism, thereby greatly improving the grinding effect of the gear. In addition, the worm-type grinding wheel of the present invention can realize the flexible adjustment of the position in the X-axis, Y-axis and Z-axis directions, and the gear being ground is further fixed by setting the tailstock vertical adjustment mechanism, so that the fixing effect is better.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-precision CNC vertical gear grinding machine, comprising: a bed; a support frame, the support frame is movably arranged on the bed along the X-axis direction; a lifting plate, the lifting plate is movably arranged on the support frame along the Z-axis direction; a rotating mechanism, the rotating mechanism is arranged on the lifting plate; a support plate, the support plate is arranged on the rotating mechanism; a grinding wheel frame, the grinding wheel frame is movably arranged on the support plate along the Y-axis direction, and it includes a frame body and a left connecting seat and a right connecting seat fixed on the frame body; a worm-type grinding wheel, the worm-type grinding wheel is rotatably connected between the left connecting seat and the right connecting seat, wherein the left end of the worm-type grinding wheel passes through the left connecting seat, and an eccentric block is fixed to its left end, a spring block structure is provided below the eccentric block, and a cleaning mechanism is provided at the left front of the right connecting seat; a gear mounting platform, the gear mounting platform is arranged on the bed, and the gear mounting platform is arranged in front of the worm-type grinding wheel; a tailstock vertical adjustment mechanism, the tailstock vertical adjustment mechanism is arranged on the bed, and the tailstock vertical adjustment mechanism is arranged in front of the gear mounting platform.

[0007] Preferably, the spring block structure includes a fixing plate fixed to the left lower end of the left connecting seat, the fixing plate is provided with a groove, the lower ends of a plurality of springs are fixed to the bottom surface of the groove, and the upper ends of the springs are fixed to the bottom surface of the arc block.

[0008] Preferably, the spring is arranged to be inclined, and its inclination direction is consistent with the direction in which the eccentric block squeezes the arc block, and sliders are fixed on the left and right sides of the arc block, and sliding grooves matching the sliders are provided on the left and right inner walls of the groove, wherein the slider is arranged to be inclined, and its inclination direction is consistent with the inclination direction of the spring.

[0009] Preferably, the cleaning mechanism comprises a first cylinder fixed on the grinding wheel frame, a connecting block is fixed to the end of the first telescopic rod of the first cylinder, a plurality of connecting rods are connected to the bottom surface of the connecting block, and a tooth groove cleaning block is connected to the connecting rods.

[0010] Preferably, the tooth groove cleaning block includes a magnetic bar fixed on a connecting rod, a plurality of magnetic plates are fixed on the magnetic bar, a connecting frame is fixed to the outer end of the magnetic plate, a plurality of first through holes are opened on the connecting frame, and a sponge layer is wrapped on the outside of the connecting frame.

[0011] Preferably, the gear mounting table includes a first fixed table fixed on the bed, a first bearing is fixed on the top surface of the first fixed table, a rotating table is fixed in the first bearing, a first rotating shaft of the first motor is fixed at the center position of the bottom surface of the rotating table, the first motor is arranged inside the first fixed table, a grinding wheel correction mechanism is fixed on the side wall of the rotating table, a second fixed table is fixed on the top surface of the rotating table, a second bearing is fixed on the top surface of the second fixed table, a workbench is fixed in the second bearing, a second rotating shaft of the second motor is fixed at the center position of the bottom surface of the workbench, the second motor is arranged inside the second fixed table, the workbench includes a base fixed in the second bearing, a round table is fixed at the middle position of the top of the base, a mounting seat is fixed at the middle position of the top of the round table, a circular mounting groove is provided at the center position of the mounting seat, and a mounting hole is provided in the circular mounting groove.

[0012] Preferably, the grinding wheel correction mechanism includes a fixed block fixedly connected to the side wall of the rotating table, one end of a support rod is detachably connected to the fixed block, and the other end of the support rod is rotatably connected to a diamond roller, which is configured as a gear type matching the worm-type grinding wheel.

[0013] Preferably, the tailstock vertical adjustment mechanism includes a fixed seat fixed on the bed, a column is fixed on the fixed seat, a first lifting mechanism is provided on the column, a tailstock is provided on the first lifting mechanism, a first connecting block is fixed on the tailstock, the bottom end of the first connecting block is rotatably connected to the second connecting block, and a conical block is fixed to the bottom end of the second connecting block.

[0014] Preferably, the connecting block, the connecting rod and the magnetic bar are all hollow and connected to each other, wherein the connecting block is connected to an exhaust pipe, the exhaust pipe is connected to an exhaust device, and the magnetic bar is provided with a plurality of ventilation holes.

[0015] Preferably, the sponge layer is provided with a plurality of second through holes aligned with the first through holes, the second through holes are configured as tapered holes that are larger outside and smaller inside, and a layer of elastic film is fixed on the inner wall of the second through holes.

[0016] (III) Beneficial effects

[0017] 1. The present invention realizes the intermittent pause of the worm-type grinding wheel during the grinding process by setting the eccentric block and the spring block structure. During the intermittent pause, the cleaning mechanism is set to clean the metal debris adhered to the tooth groove wall, thereby greatly improving the grinding effect of the gear. In addition, the worm-type grinding wheel of the present invention can realize the flexible adjustment of the position in the X-axis, Y-axis and Z-axis directions, so that it can adapt to the grinding of gears of different sizes, and can adjust the position of the worm-type grinding wheel to the best grinding position, thereby greatly improving the grinding accuracy of the gear. After the setting, the gear mounting table does not need to be moved. It only needs to adjust the position of the worm-type grinding wheel on the X-axis, Y-axis and Z-axis to adjust it to the position most suitable for the grinding of the gear installed on the gear mounting table, which is very convenient. The gear mounting table is used to install and fix the gear to be ground, and the gear being ground is further fixed by setting the tailstock vertical adjustment mechanism, so that the fixing effect is better, thereby making the entire gear grinding machine more stable.

[0018] 2. The present invention sets the inclination direction of the spring to be consistent with the direction in which the eccentric block squeezes the arc block, so that the arc block is easily squeezed into the groove, so that the eccentric block will not cause the spring to be twisted or damaged during the squeezing of the arc block, and will not cause the arc block to get stuck and the eccentric block cannot pass through the arc block. The setting of the slider and the slide groove can well limit the path of the arc block's expansion and contraction, further ensuring that the eccentric block passes through the arc block accurately and smoothly, thereby ensuring the stability of the operation of the entire device;

[0019] 3. The tooth groove cleaning block of the present invention is configured to be composed of a magnetic rod, a magnetic plate, a magnetic connection frame and a sponge layer, wherein the sponge layer wrapped on the outside of the connection frame is in direct contact with the tooth groove wall, and plays a role in erasing the metal debris adhered to the tooth groove wall. On the one hand, it has a good effect on erasing the metal debris, and on the other hand, due to its flexible feature, it not only plays a good protective role on the tooth groove wall and does not scratch the tooth groove wall, but also has good flexibility. The magnetic rod, the magnetic plate and the magnetic connection frame are configured to play a good adsorption role on the metal debris wiped off the tooth groove wall by the sponge layer. Due to the effect of magnetic attraction, the metal debris is firmly adsorbed on the sponge layer, which greatly increases the cleaning effect. A hole matching the through hole can be opened on the sponge layer, so that some of the metal debris gathered into a group can enter the interior of the connection frame through the holes on the sponge layer and the through hole, and be adsorbed on the interior of the connection frame, which greatly increases the capacity of the sponge layer to adsorb metal debris;

[0020] 4. The present invention arranges the vacuum device and the second through hole, so that when the metal debris is cleaned to the second through hole, due to the dual forces of the magnetic force and the suction of the vacuum device, the metal debris can easily pass through the second through hole and the first through hole into the connecting frame and be collected, which greatly increases the capacity and use time of the sponge layer. The second through hole is arranged as a tapered hole with a large outside and a small inside, and a layer of elastic film is fixed on its inner wall. On the one hand, the suction effect on the metal debris is better, and on the other hand, the second through hole can be correspondingly enlarged during the suction process, which is convenient for the metal debris to enter the connecting frame. The arrangement of the tapered hole with a large outside and a small inside is convenient for the metal debris to enter the second through hole when the vacuum device is not in use, and the metal debris is well collected in the second through hole, which is convenient for the subsequent suction of the metal debris into the connecting frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall schematic diagram of the present invention.

[0022] Figure 2 For the present invention Figure 1 Schematic diagram after removing the gear mounting platform and tailstock vertical adjustment mechanism.

[0023] Figure 3 It is a schematic diagram of the bullet block structure of the present invention.

[0024] Figure 4 It is a cross-sectional view of the bullet block structure of the present invention.

[0025] Figure 5 It is a schematic diagram of the fixing plate, the groove and the slide groove of the present invention.

[0026] Figure 6 It is a schematic diagram of the cleaning mechanism of the present invention.

[0027] Figure 7 It is a schematic diagram of the connecting rod and the tooth groove cleaning block of the present invention.

[0028] Figure 8 For the present invention Figure 7 Schematic diagram after removing the sponge layer.

[0029] Fig. 9 It is an overall schematic diagram of the gear mounting platform of the present invention.

[0030] Fig.10 For the present invention Fig. 9 Cross-sectional view of the grinding wheel after correction mechanism.

[0031] Fig.11 It is a schematic diagram of the second bearing and the workbench of the present invention.

[0032] Fig.12 It is a schematic diagram of the grinding wheel correction mechanism of the present invention.

[0033] Fig.13 It is an overall schematic diagram of the tailstock vertical adjustment mechanism of the present invention.

[0034] Fig.14 For the present invention Figure 6 Schematic diagram after adding the exhaust pipe and exhaust device.

[0035] Fig.15 Schematic diagram of the connecting rod, magnetic rod and vent hole of the present invention.

[0036] Fig.16 Schematic diagram of the sponge layer and the second through hole thereon according to the present invention.

[0037] Fig.17 Schematic diagram of the second through hole and the elastic membrane of the present invention.

[0038] Fig.18 It is a schematic diagram of the support frame, the first screw mechanism, the lifting plate, the rotating mechanism, the grinding wheel frame, the worm-type grinding wheel, the eccentric block, the spring block structure and the cleaning mechanism of the present invention.

[0039] Fig.19 It is a connection diagram of the third motor, the third rotating shaft, the lead screw, the lead screw nut seat, the fourth motor, the fourth rotating shaft, the turntable and the lifting plate of the present invention.

[0040] In the figure: 1-bed, 2-support frame, 3-lifting plate, 4-rotating mechanism, 5-support plate, 6-grinding wheel frame, 7-frame, 8-left connecting seat, 9-right connecting seat, 10-worm type grinding wheel, 11-eccentric block, 12-spring block structure, 13-cleaning mechanism, 14-gear mounting table, 15-tail frame vertical adjustment mechanism, 16-fixed plate, 17-groove, 18-spring, 19-arc block, 20-slider, 21-slideway, 22-first cylinder, 23-first telescopic rod, 24-connecting block, 25-connecting rod, 26-tooth groove cleaning block, 27-magnetic rod, 28-magnetic plate, 29-connecting frame, 30-first through hole, 31-sponge layer, 32-first fixed table, 33-first bearing, 34-rotating table, 35-first motor, 36-first rotating shaft, 37-grinding wheel correction mechanism, 38-second fixed table, 39-second bearing, 40-workbench, 41-second motor, 42-second rotating shaft, 43-base, 44-round table, 45-mounting seat, 46-circular mounting groove, 47-mounting hole, 48-fixed block, 49-support rod, 50-diamond roller, 51-fixed seat, 52-column, 53-first lifting mechanism, 54-tail frame, 55-first connecting block, 56-second connecting block, 57-conical block, 58-exhaust pipe, 59-exhaust device, 60-ventilation hole, 61-second through hole, 62-elastic membrane, 63-first screw mechanism, 64-third motor, 65-third rotating shaft, 66-screw, 67-screw nut seat, 68-fourth motor, 69-fourth rotating shaft, 70-turntable, 71-second screw mechanism, 72-third screw mechanism. DETAILED DESCRIPTION

[0041] The following will be combined with the attached embodiment of the present invention Figure 1-19 The technical solutions in the embodiments of the present invention are described clearly and completely. 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.

[0042] The present invention provides a technical solution: a high-precision CNC vertical gear grinding machine, comprising: a bed 1; a support frame 2, the support frame 2 is movably arranged on the bed 1 along the X-axis direction; a lifting plate 3, the lifting plate 3 is movably arranged on the support frame 2 along the Z-axis direction; a rotating mechanism 4, the rotating mechanism 4 is arranged on the lifting plate 3; a support plate 5, the support plate 5 is arranged on the rotating mechanism 4; a grinding wheel frame 6, the grinding wheel frame 6 is movably arranged on the support plate 5 along the Y-axis direction, and it includes a frame body 7 and a left connecting seat 8 and a right connecting seat 9 fixed on the frame body 7; a worm-type grinding wheel 10, the worm-type grinding wheel 10 is rotatably connected between the left connecting seat 8 and the right connecting seat 9, wherein the left end of the worm-type grinding wheel 10 passes through the left connecting seat 8, and its left end is fixed with a biasing A core block 11, a spring block structure 12 is provided below the eccentric block 11, and a cleaning mechanism 13 is provided at the left front of the right connecting seat 9; a gear mounting platform 14, the gear mounting platform 14 is arranged on the bed 1, and the gear mounting platform 14 is arranged in front of the worm-type grinding wheel 10; a tailstock vertical adjustment mechanism 15, the tailstock vertical adjustment mechanism 15 is arranged on the bed 1, and the tailstock vertical adjustment mechanism 15 is arranged in front of the gear mounting platform 14. The present invention realizes the intermittent pause of the worm-type grinding wheel 10 during the grinding process through the arrangement of the eccentric block 11 and the spring block structure 12. During this intermittent pause, the cleaning mechanism 13 is arranged to clean the metal debris adhered to the tooth groove wall, thereby greatly improving the grinding effect of the gear. In addition, the worm-type grinding wheel 10 of the present invention can realize flexible adjustment of the position in the X-axis, Y-axis and Z-axis directions, so that it can adapt to the grinding of gears of different sizes, and can adjust the position of the worm-type grinding wheel 10 to the optimal grinding position, which greatly improves the grinding accuracy of the gear. With this arrangement, the gear mounting platform 14 does not need to be moved. It is only necessary to adjust the position of the worm-type grinding wheel 10 on the X-axis, Y-axis and Z-axis to adjust it to the position most suitable for grinding the gear installed on the gear mounting platform 14, which is very convenient. The gear mounting platform 14 is used to install and fix the gear to be ground, and the gear being ground is further fixed by the arrangement of the tailstock vertical adjustment mechanism 15, so that the fixing effect is better, thereby making the entire gear grinding machine more stable.

[0043] The spring block structure 12 includes a fixed plate 16 fixed to the lower left end of the left connecting seat 8, and a groove 17 is provided on the fixed plate 16. The lower ends of a plurality of springs 18 are fixed to the bottom surface of the groove 17, and the upper ends of the springs 18 are fixed to the bottom surface of the arc block 19. The intermittent pause of the worm-type grinding wheel 10 during the grinding process is achieved by the eccentric block 11 and the spring block structure 12. The specific working principle is as follows: when the eccentric block 11 rotates to the arc block 19, it will be blocked by the arc block 19. At this time, the worm-type grinding wheel 10 will stop rotating. In the interval when the eccentric block 11 squeezes the arc block 19, the cleaning mechanism 13 will quickly clean the ground tooth groove wall. After cleaning, the eccentric block 11 just squeezes the arc block 19 into the groove 17, so that the worm-type grinding wheel 10 rotates again to continue grinding the gear. It should be noted here that the pause time of the worm-type grinding wheel 10 can be set according to the rotation speed of the worm-type grinding wheel 10 and the difficulty of compressing the spring 18. It is best that the cleaning mechanism 13 can complete the cleaning of the corresponding tooth groove wall in the interval when the eccentric block 11 contacts the arc block 19 but has not yet squeezed the moving arc block 19, because the worm-type grinding wheel 10 is completely motionless during this squeezing period. Once the arc block 19 is pressed down, the eccentric block 11 passes through the arc block 19, and the worm-type grinding wheel 10 rotates slowly. In this way, there will be a position difference with the cleaning mechanism 13, which will affect the accuracy of the cleaning mechanism 13 in cleaning the tooth groove wall to a certain extent.

[0044] The spring 18 is arranged to be inclined, and its inclination direction is consistent with the direction in which the eccentric block 11 squeezes the arc block 19. Slide blocks 20 are fixed on the left and right sides of the arc block 19, and slide grooves 21 matching the slide blocks 20 are provided on the left and right inner walls of the groove 17, wherein the slide blocks 20 are arranged to be inclined, and their inclination direction is consistent with the inclination direction of the spring 18. Since the squeezing force of the eccentric block 11 on the arc block 19 is inclined, the inclination direction of the spring 18 is arranged to be consistent with the direction in which the eccentric block 11 squeezes the arc block 19, so that it is convenient to squeeze the arc block 19 into the groove 17. If the spring 18 is arranged to be vertical and the squeezing force of the eccentric block 11 is inclined, the spring 18 is likely to be twisted during the squeezing process. On the one hand, it will cause the arc block 19 to get stuck during the squeezing process, making it impossible for the eccentric block 11 to pass through the arc block 19. On the other hand, it is also easy to damage the spring 18. By setting the slider 20 and the slide groove 21, the extension and retraction path of the arc block 19 can be well limited, further ensuring that the eccentric block 11 passes through the arc block 19 accurately and smoothly, thereby ensuring the stability of the operation of the entire equipment.

[0045] The cleaning mechanism 13 includes a first cylinder 22 fixed on the grinding wheel frame 6, a connecting block 24 is fixed to the end of the first telescopic rod 23 of the first cylinder 22, a plurality of connecting rods 25 are connected to the bottom surface of the connecting block 24, and a tooth groove cleaning block 26 is connected to the connecting rod 25, wherein the number of the connecting rods 25 is determined according to the number of tooth grooves that can be ground by one rotation of the worm-type grinding wheel 10. If the worm-type grinding wheel 10 can release three tooth grooves in its right front by one rotation, then the number of the connecting rods 25 is set to three, wherein the shape of the connecting block 24 is set to match the tooth groove, so that the tooth groove can be ground. The three walls of the groove are cleaned comprehensively. The specific working principle is as follows: when the worm-type grinding wheel 10 stops, the first cylinder 22 will start, and its first telescopic rod 23 will extend downward rapidly until the lower end of the tooth groove cleaning block 26 exceeds the lower end of the tooth groove, and then the first telescopic rod 23 will quickly shrink upward and return to its original position. This process will completely clean up the metal debris adhering to the tooth groove wall, so that it will not be brought to the next round of grinding, and the up and down movement of the first telescopic rod 23 is equivalent to cleaning the tooth groove wall twice, and the cleaning effect is good, thereby greatly improving the grinding effect of the gear. In fact, the outer wall of each tooth on the gear may also adhere to metal debris, but these debris can basically be directly washed away by the grinding oil. For the sake of insurance, a matching cleaning plate can be connected to the rear end of the adjacent tooth groove cleaning block 26, so that the metal debris adhering to the outer wall of the tooth can be cleaned, making the cleaning range more comprehensive.

[0046] The tooth groove cleaning block 26 includes a magnetic bar 27 fixed on the connecting rod 25, and a plurality of magnetic plates 28 are fixed on the magnetic bar 27. A connecting frame 29 is fixed to the outer end of the magnetic plate 28. A plurality of first through holes 30 are opened on the connecting frame 29, and a sponge layer 31 is wrapped around the outside of the connecting frame 29. If the tooth groove is trapezoidal, then the magnetic plate 28 is arranged into four pieces, one end of which is connected to the magnetic bar 27, and the other end is connected to the connection between the plates of the connecting frame 29. In this way, the connecting frame 29 is divided into four areas, wherein the connecting frame 29 is also arranged to be magnetic, and the sponge layer 31 wrapped around the outside of the connecting frame 29 is in direct contact with the tooth groove wall, and plays a role of erasing metal debris adhered to the tooth groove wall. On the one hand, it has a good effect on erasing metal debris, and on the other hand, due to its flexible feature, it not only plays a good protective role on the tooth groove wall and will not scratch the tooth groove wall, but also has good flexibility. The arrangement of the magnetic rod 27, the magnetic plate 28 and the magnetic connection frame 29 can effectively adsorb the metal debris wiped off the tooth groove wall by the sponge layer 31. Due to the effect of magnetic attraction, the metal debris is firmly adsorbed on the sponge layer 31, which greatly increases the cleaning effect.

[0047] The gear mounting platform 14 includes a first fixed platform 32 fixed on the bed 1, a first bearing 33 is fixed on the top surface of the first fixed platform 32, a rotating platform 34 is fixed in the first bearing 33, a first rotating shaft 36 of a first motor 35 is fixed at the center of the bottom surface of the rotating platform 34, the first motor 35 is arranged inside the first fixed platform 32, a grinding wheel correction mechanism 37 is fixed on the side wall of the rotating platform 34, a second fixed platform 38 is fixed on the top surface of the rotating platform 34, a second bearing 39 is fixed on the top surface of the second fixed platform 38, and a second bearing 39 is fixed on the top surface of the second fixed platform 38. A workbench 40 is fixed in the bearing 39, a second rotating shaft 42 of a second motor 41 is fixed at the center of the bottom surface of the workbench 40, the second motor 41 is arranged inside the second fixed platform 38, the workbench 40 includes a base 43 fixed in the second bearing 39, a round table 44 is fixed at the middle position of the top of the base 43, a mounting seat 45 is fixed at the middle position of the top of the round table 44, a circular mounting groove 46 is provided at the center of the mounting seat 45, and a mounting hole 47 is provided in the circular mounting groove 46. When the gear needs to be adjusted, When grinding, the grinding wheel correction mechanism 37 is rotated to a position that does not affect grinding. It is only necessary to install the gear to be ground on the mounting seat 45. When the worm-type grinding wheel 10 on the gear grinder has been used for a long time, it is necessary to correct it through the grinding wheel correction mechanism 37. When the worm-type grinding wheel 10 needs to be corrected, the grinding wheel correction mechanism 37 will be rotated to the correction position. This correction position is pre-set, and this correction position can just correct the worm-type grinding wheel 10. After the correction is completed, the grinding wheel correction mechanism 37 will be rotated to the original position that does not affect grinding. The structure realizes the flexible adjustment of the position of the grinding wheel correction mechanism 37. At the same time, the grinding wheel correction mechanism 37 and the workbench 40 are integrated, which greatly saves space. By flexibly adjusting the position of the grinding wheel correction mechanism 37 when it is working and when it is not working, not only can the grinding wheel be corrected when correction is needed, but also the grinding wheel correction mechanism 37 can be rotated to a position that does not affect grinding when correction is not needed, which is convenient for grinding. It should be noted here that the second motor 41 is stationary during the grinding process. After the gear to be ground is mounted on the mounting seat 45, if the meshing position of the gear and the worm-type grinding wheel 10 needs to be adjusted, the gear can be rotated by the second motor 41 for adjustment. In addition, the setting of the second motor 41 can increase the scope of use of the gear grinder, so that the gear grinder can also grind ordinary workpieces. When ordinary workpieces only need ordinary grinding wheels for grinding, the workpiece can be ground while rotating, which increases the scope of application of the gear grinder.

[0048] The grinding wheel correction mechanism 37 includes a fixed block 48 fixedly connected to the side wall of the rotating table 34, one end of a support rod 49 is detachably connected to the fixed block 48, and the other end of the support rod 49 is rotatably connected to a diamond roller 50, and the diamond roller 50 is configured to be a gear type that matches the worm-type grinding wheel 10, wherein the diamond roller 50 is configured to be a gear type, so that it matches the worm-type grinding wheel 10, and can perform meshing correction on the worm-type grinding wheel 10, thereby achieving comprehensive correction of the worm-type grinding wheel 10 and greatly improving the correction effect.

[0049] The tailstock vertical adjustment mechanism 15 includes a fixed seat 51 fixed on the bed 1, a column 52 is fixed on the fixed seat 51, a first lifting mechanism 53 is provided on the column 52, a tailstock 54 is provided on the first lifting mechanism 53, a first connecting block 55 is fixed on the tailstock 54, a second connecting block 56 is rotatably connected to the bottom end of the first connecting block 55, a conical block 57 is fixed to the bottom end of the second connecting block 56, wherein the gear to be ground is fixed on the mounting seat 45 and also needs to be fixed with the aid of a tooling that matches the gear, wherein the tooling can be a shaft that passes through the gear, the lower end of the shaft is rotatably connected to the turntable, and the upper end of the shaft is provided with a conical block 57 that matches the conical block 57 The conical groove matched with the conical block 7 is provided on the tooling of the fixed gear. After the gear is installed, the first lifting mechanism 53 is started to drive the tail frame 54 fixed thereon downward, and then drives the conical block 57 downward until it contacts and presses with the upper end of the tooling for fixing the gear. The tooling for fixing the gear is provided with a conical groove matching the conical block 7. The conical block 57 will be inserted into the conical groove until the tooling and the gear fixed on the tooling are pressed tightly. Then the gear can be ground. When the grinding is completed, the first lifting mechanism 53 is started to make the conical block 57 rise to its original position. The ground gear is removed and the next gear to be ground is installed on the turntable. The cycle is repeated. The reason why the tooling for fixing the gear is pressed by means of the conical block 57 has the following advantages: 1) The gear is fixed by automatic pressing, which is convenient, efficient and effective. At the same time, this pressing method can prevent the gear from being eccentric due to uneven force during the grinding process, and prevent the tooling for fixing the gear from being deformed due to uneven force. This setting avoids the occurrence of the above situation, making the grinding more stable and the grinding accuracy higher; 2) The conical block 57 has a guiding effect during the plug-in process, making the plug-in more convenient; 3) The plug-in method of the conical block 57 and the conical groove makes the fixing effect of the two better, wherein the conical groove can be set to be slightly smaller than the conical block 57, so that the fixing effect of the two is better.

[0050] The connecting block 24, the connecting rod 25 and the magnetic bar 26 are all hollow and connected to each other. The connecting block 24 is connected to an exhaust pipe 58, and the exhaust pipe 58 is connected to an exhaust device 59. The magnetic bar 27 is provided with a plurality of ventilation holes 60. Through this arrangement, the exhaust device 59 can perform exhaust continuously or intermittently during the grinding process. The exhaust process can adsorb metal debris stuck to the sponge layer 31. On the one hand, the metal debris can be tightly adhered to the sponge layer 31. On the other hand, part of the metal debris can be sucked into the connecting frame 29 for collection. This can increase the use time of the sponge layer 29 and greatly improve the effect of the sponge layer 29 in cleaning metal debris.

[0051] The sponge layer 31 is provided with a plurality of second through holes 61 aligned with the first through holes 30. The second through holes 61 are configured as tapered holes that are larger on the outside and smaller on the inside, and a layer of elastic membrane 62 is fixed on the inner wall of the second through holes 61. The present invention uses this configuration to clean metal debris adhered to the tooth groove wall. When the metal debris is cleaned to the second through holes 61, due to the dual forces of magnetic force and suction of the vacuum device 59, the metal debris can easily pass through the second through holes 61 and the first through holes 30 and enter the connecting frame 29 to be collected, thereby greatly increasing the capacity and use time of the sponge layer 31. The second through hole 61 is set to be a tapered hole with a larger outer side and a smaller inner side, and a layer of elastic membrane 62 is fixed on its inner wall. This can improve the suction effect on metal debris on the one hand, and can make the second through hole 61 correspondingly larger during the suction process on the other hand, so that the metal debris can enter the connecting frame 29 conveniently. The setting of the tapered hole with a larger outer side and a smaller inner side facilitates the metal debris to enter the second through hole 61 when the exhaust device 59 is not in use, and the metal debris can be well collected in the second through hole 61, so that the metal debris can be sucked into the connecting frame 29 later.

[0052] A first screw mechanism 63 is provided on the top right side of the support frame 2, and the first screw mechanism 63 includes a third motor 64 fixed on the top right side of the support frame 2, a screw 66 is fixed on the third rotating shaft 65 of the third motor 64, a screw nut seat 67 is provided on the screw nut seat 67, and a lifting plate 3 is fixed on the screw nut seat 67, and a rotating mechanism 4 includes a fourth motor 68 fixed at the center position of the rear side of the lifting plate 3, a fourth rotating shaft 69 of the fourth motor 68 passes through the lifting plate 3, and a turntable 70 is fixed at the front end of the fourth rotating shaft 69, and a support plate 5 is fixed on the front end surface of the turntable 70. The present invention realizes the lifting and lowering of the lifting plate 3 through the first screw mechanism 63, and finally realizes the adjustment of the position of the worm-type grinding wheel 10 in the Z-axis direction, and realizes the rotation of the worm-type grinding wheel 10 through the rotating mechanism 4, realizes the grinding of the left-hand angle and the right-hand angle of the gear, and realizes the comprehensive grinding of the gear. A second screw mechanism 71 is provided on the grinding wheel frame 6, and the second screw mechanism 71 is used to adjust the position of the grinding wheel frame 6 in the Y-axis direction, and finally adjust the position of the worm-type grinding wheel 10 in the Y-axis direction. The second screw mechanism 71 and the first screw mechanism 63 have the same principle, so the specific structure of the second screw mechanism 71 will not be repeated here. The bottom of the support frame 2 is slidably connected to the top surface of the bed 1, and a third screw mechanism 72 is provided on the support frame 2. The third screw mechanism 72 is used to adjust the position of the support frame 2 in the X-axis direction, and finally adjust the position of the worm-type grinding wheel 10 in the X-axis direction. The third screw mechanism 72 and the first screw mechanism 63 have the same principle, so the specific structure of the third screw mechanism 72 will not be repeated here. The first lifting mechanism 53 also belongs to a screw mechanism, and the specific structure will not be repeated here. In addition, the rotation of the worm-type grinding wheel 10 can be driven by fixing a motor at the right end of the right connecting seat 8 , and the rotating shaft of the motor is fixed on the right end of the worm-type grinding wheel 10 .

[0053] Working principle: when it is necessary to grind the gear, first install the gear on the gear mounting platform 14, and then press and fix the gear on the gear mounting platform 14 through the tailstock vertical adjustment mechanism 15, so that the fixing effect of the gear is better, and then adjust the position of the worm-type grinding wheel 10 on the X-axis, Y-axis and Z-axis until the worm-type grinding wheel 10 is adjusted to the grinding position that best matches the gear, and then the worm-type grinding wheel 10 starts to rotate to grind the gear, wherein the grinding wheel frame 6 can be rotated by a certain angle through the rotating mechanism 4, so that the helix angle of the gear can be ground, and the grinding wheel can be corrected regularly through the setting of the grinding wheel correction mechanism 37 on the gear mounting platform 14. The present invention realizes the intermittent pause of the worm-type grinding wheel 10 during the grinding process through the setting of the eccentric block 11 and the spring block structure 12, and during this intermittent pause process, the cleaning mechanism 13 is set to clean the metal debris adhering to the tooth groove wall, thereby greatly improving the grinding effect of the gear.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision CNC vertical gear grinding machine, characterized in that: include: Bed (1); A support frame (2), the support frame (2) being arranged on the bed (1) so as to be movable along the X-axis direction; A lifting plate (3), the lifting plate (3) being arranged on the support frame (2) so as to be movable along the Z-axis direction; A rotating mechanism (4), the rotating mechanism (4) being arranged on the lifting plate (3); A support plate (5), the support plate (5) being arranged on the rotating mechanism (4); A grinding wheel frame (6), the grinding wheel frame (6) is arranged on the support plate (5) so as to be movable along the Y-axis direction, and comprises a frame body (7) and a left connecting seat (8) and a right connecting seat (9) fixed on the frame body (7); A worm-type grinding wheel (10), the worm-type grinding wheel (10) being rotatably connected between the left connecting seat (8) and the right connecting seat (9), wherein the left end of the worm-type grinding wheel (10) passes through the left connecting seat (8), and an eccentric block (11) is fixed to the left end thereof, a spring block structure (12) is provided below the eccentric block (11), and a cleaning mechanism (13) is provided at the left front of the right connecting seat (9); A gear mounting platform (14), the gear mounting platform (14) being arranged on the bed (1), and the gear mounting platform (14) being arranged in front of the worm-type grinding wheel (10); A tailstock vertical adjustment mechanism (15), wherein the tailstock vertical adjustment mechanism (15) is arranged on the bed (1), and the tailstock vertical adjustment mechanism (15) is arranged in front of the gear mounting platform (14); The spring block structure (12) comprises a fixing plate (16) fixed to the left lower end of the left connecting seat (8), the fixing plate (16) being provided with a groove (17), the lower ends of a plurality of springs (18) being fixed to the bottom surface of the groove (17), and the upper ends of the springs (18) being fixed to the bottom surface of the arc block (19); The spring (18) is arranged to be inclined, and its inclination direction is consistent with the direction in which the eccentric block (11) squeezes the arc block (19); sliders (20) are fixed on the left and right sides of the arc block (19); and slide grooves (21) matching the sliders (20) are provided on the left and right inner walls of the groove (17); wherein the sliders (20) are arranged to be inclined, and their inclination direction is consistent with the inclination direction of the spring (18); The cleaning mechanism (13) comprises a first cylinder (22) fixed on the grinding wheel frame (6); a connecting block (24) is fixed to the end of a first telescopic rod (23) of the first cylinder (22); a plurality of connecting rods (25) are connected to the bottom surface of the connecting block (24); and a tooth groove cleaning block (26) is connected to the connecting rod (25).

2. A high-precision CNC vertical gear grinding machine according to claim 1, characterized in that: The tooth groove cleaning block (26) comprises a magnetic bar (27) fixed on the connecting rod (25), a plurality of magnetic plates (28) being fixed on the magnetic bar (27), a connecting frame (29) being fixed at the outer end of the magnetic plate (28), a plurality of first through holes (30) being formed on the connecting frame (29), and a sponge layer (31) being wrapped around the outside of the connecting frame (29).

3. A high-precision CNC vertical gear grinding machine according to claim 1, characterized in that: The gear mounting platform (14) comprises a first fixed platform (32) fixed on the bed (1); a first bearing (33) is fixed on the top surface of the first fixed platform (32); a rotating platform (34) is fixed inside the first bearing (33); a first rotating shaft (36) of a first motor (35) is fixed at the center position of the bottom surface of the rotating platform (34); the first motor (35) is arranged inside the first fixed platform (32); a grinding wheel correction mechanism (37) is fixed on the side wall of the rotating platform (34); a second fixed platform (38) is fixed on the top surface of the rotating platform (34); a second bearing (39) is fixed on the top surface of the second fixed platform (38); ), a workbench (40) is fixed in the second bearing (39), a second rotating shaft (42) of a second motor (41) is fixed at the center position of the bottom surface of the workbench (40), the second motor (41) is arranged inside the second fixed platform (38), the workbench (40) comprises a base (43) fixed in the second bearing (39), a round table (44) is fixed at the middle position of the top of the base (43), a mounting seat (45) is fixed at the middle position of the top of the round table (44), a circular mounting groove (46) is provided at the center position of the mounting seat (45), and a mounting hole (47) is provided in the circular mounting groove (46).

4. A high-precision CNC vertical gear grinding machine according to claim 3, characterized in that: The grinding wheel correction mechanism (37) comprises a fixed block (48) fixedly connected to the side wall of the rotating table (34), one end of a support rod (49) being detachably connected to the fixed block (48), and the other end of the support rod (49) being rotatably connected to a diamond roller (50), wherein the diamond roller (50) is configured to be a gear-type that matches the worm-type grinding wheel (10).

5. A high-precision CNC vertical gear grinding machine according to claim 1, characterized in that: The tailstock vertical adjustment mechanism (15) comprises a fixing seat (51) fixed on the bed (1), a column (52) being fixed on the fixing seat (51), a first lifting mechanism (53) being provided on the column (52), a tailstock (54) being provided on the first lifting mechanism (53), a first connecting block (55) being fixed on the tailstock (54), a second connecting block (56) being rotatably connected to the bottom end of the first connecting block (55), and a conical block (57) being fixed to the bottom end of the second connecting block (56).

6. A high-precision CNC vertical gear grinding machine according to claim 2, characterized in that: The connecting block (24), the connecting rod (25) and the magnetic bar (27) are all hollow and are connected to each other. The connecting block (24) is connected to an air extraction pipe (58), the air extraction pipe (58) is connected to an air extraction device (59), and the magnetic bar (27) is provided with a plurality of air vents (60).

7. A high-precision CNC vertical gear grinding machine according to claim 6, characterized in that: The sponge layer (31) is provided with a plurality of second through holes (61) aligned with the first through holes (30); the second through holes (61) are configured as tapered holes that are larger on the outside and smaller on the inside; and a layer of elastic membrane (62) is fixed on the inner wall of the second through holes (61).

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