A grinding method for grinding the outer circle of a part with the inner circle of a grinding wheel

Abstract

The present invention discloses a grinding method for grinding the outer circle of a part with the inner circle of a grinding wheel, belonging to the technical field of grinding processing. The equipment adopted by the grinding method includes a grinding machine, a fixture, an annular grinding wheel, a workpiece and a loading and unloading robot. A gear ring is rotatably connected inside the grinding machine. Blowing grooves and suction grooves are symmetrically designed on both sides of the gear ring. A liquid spraying pipe with an opening facing the gear ring is arranged inside the grinding machine. A first hydraulic press is arranged inside the grinding machine. The telescopic end of the first hydraulic press is connected with a first motor. The output end of the first motor is provided with a first gear that cooperates with the gear ring. In the present invention, the surface axes of the workpiece and the annular grinding wheel are staggeredly designed, so that when the workpiece advances, it gradually advances in an inclined direction with respect to the annular grinding wheel, and the edge angle part of the rectangular keyway of the workpiece contacts the annular grinding wheel first. When contacting, the stress change gradually changes from small to large, which can relieve the impact force at the initial contact of the annular grinding wheel, help to maintain the smoothness of grinding, and improve the grinding quality.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding machining, and in particular, to a grinding method for grinding the outer circle of a part with the inner circle of a grinding wheel. Background Art

[0002] Shaft parts of an automotive transmission system are generally machined from low-carbon alloy steel blanks. After carburizing and quenching heat treatment, subsequent grinding processes need to be performed on the reserved grinding allowance layer to meet the requirements of product dimensional accuracy, geometric tolerances, surface roughness, waviness, etc. Generally, subsequent grinding operations will be carried out to treat surface defects, improve surface quality, and enhance the surface quality and accuracy of the shaft parts, thereby ensuring their reliability and performance during vehicle operation.

[0003] In existing grinding processes, the grinding technology generally grinds the outer surface of the shaft part with a grinding wheel. When grinding a shaft part with a keyway, such as a transmission shaft, when the rotating grinding wheel advances through the keyway area, the shape of the grinding area changes, and both the grinding contact area and contact stress between the grinding wheel and the shaft part will change, which in turn causes changes in the cutting stress of grinding. This change is likely to cause the blade to vibrate, affecting the grinding operation, resulting in defects and damage in the grinding area, and affecting the grinding accuracy and quality.

[0004] How to invent a method to improve these problems has become an urgent problem for those skilled in the art. Summary of the Invention

[0005] To make up for the above deficiencies, the present invention provides a grinding method for grinding the outer circle of a part with the inner circle of a grinding wheel, aiming to improve the problems mentioned above.

[0006] The present invention is implemented as follows:

[0007] The present invention provides a grinding method for grinding the outer circle of a part by grinding the inner circle of a grinding wheel. The equipment used in the grinding method includes a grinding machine, a fixture, an annular grinding wheel, a workpiece and a loading and unloading robot. The grinding machine is rotatably connected to a gear ring, and the two sides of the gear ring are symmetrically designed with blowing grooves and suction grooves. The inner side of the grinding machine is provided with a spray pipe with an opening facing the gear ring. The grinding machine is provided with a first hydraulic press, and the telescopic end of the first hydraulic press is connected to a motor 1, and the output end of the motor 1 is provided with a gear 1 matched with the gear ring. The grinding machine is provided with a second hydraulic press, and the telescopic end of the second hydraulic press is connected to a slide seat 1. The inner sliding connection of the grinding machine There is a slide seat 2, a liquid storage tank is arranged on the top of the slide seat 2, a transmission mechanism is arranged inside the grinder, the transmission mechanism includes a gear 2 arranged on a side wall of the slide seat, the gear 2 cooperates with the gear 1, a slide bar is slidably connected with the surface of the slide seat 1, a connecting rod for transmission is arranged at the end of the slide bar and the side wall of the gear 2, a driving tooth and a toggle tooth are arranged on the surface of the slide bar, a movable tooth is slidably connected inside the slide bar, a limit block extending to the outside of the slide bar is arranged on the side wall of the movable tooth, a stop block cooperating with the limit block is arranged inside the grinder, and a linkage mechanism for performing different auxiliary work on grinding according to different rotation speeds is arranged inside the grinder;

[0008] The grinding method comprises the following steps:

[0009] S1: Clamp the workpiece with a fixture and adjust the processing parameters;

[0010] S2: Start motor 1 to drive the gear ring to rotate at high speed to grind the workpiece at high speed;

[0011] S3: Start the first hydraulic press and the second hydraulic press, change the driving mode, and drive the gear ring to reciprocate to grind the workpiece at a low speed.

[0012] Preferably, a spring is arranged between the movable tooth and the slide bar, the number of driving teeth is greater than the number of movable teeth, the movable teeth and the driving teeth are distributed continuously, and the gap between the teeth is the same, and the gap between the driving teeth and the toggle teeth is greater than the tooth spacing between the driving teeth and the movable teeth.

[0013] Preferably, the linkage mechanism includes gear three and a fan arranged inside the slide two, an impeller group is arranged inside the fan, gear three cooperates with the gear ring, the output shaft of gear three is connected to the impeller group, a piston tube is arranged inside the slide two, a turntable is rotatably connected inside the piston tube, a ratchet for one-way transmission is arranged between the rotating shaft of the turntable and the rotating shaft of gear three, a piston block is slidably connected inside the piston tube, a connecting rod for transmission is arranged between the piston block and the turntable, a discharge pipe for liquid discharge connected to the spray pipe is arranged on the top of the piston tube, and an inlet pipe for liquid intake connected to the liquid storage tank is arranged on the top of the piston tube.

[0014] Preferably, two groups of air suction grooves and air blowing grooves are symmetrically distributed inside the grinding machine. A pipeline connected to the air inlet of the blower is arranged inside the air suction groove, and a pipeline connected to the air outlet of the blower is arranged inside the air blowing groove.

[0015] Preferably, a runner is rotatably connected inside the grinding machine. Two groups of support rods are symmetrically arranged along the center on the side wall of the runner. One group of support rods is connected to the first sliding seat, and the other group is connected to the second sliding seat.

[0016] Preferably, the axis of the circular machining groove opened inside the annular grinding wheel is stagger-designed with the axis of the annular grinding wheel. The annular grinding wheel is inclined and installed inside the gear ring, and the axis of the circular machining groove inside the annular grinding wheel coincides with the axis of the workpiece and the gear ring.

[0017] In summary, the beneficial effects of the present invention are as follows:

[0018] 1. By changing to the internal cutting grinding process, compared with the traditional external cutting grinding method, when the device grinds the surface of the workpiece with a keyway, it can increase the contact area during grinding, provide support for the workpiece at the same time, make the force on the workpiece uniform during processing, avoid deformation during processing caused by excessive local stress, reduce the vibration and impact force between the device and the workpiece when grinding to the keyway area, improve the stability of the processing process, improve the processing accuracy and the quality of the part surface, make the surface waviness of the processed workpiece ideal, thereby improving the processing quality and level of the grinding work, improving the overall quality of the processed workpiece, and improving the production economic benefits.

[0019] 2. The stagger design of the axis of the workpiece and the surface of the annular grinding wheel makes the workpiece gradually progress in an inclined direction with the annular grinding wheel when advancing. The edge angle part of the rectangular keyway of the workpiece contacts the annular grinding wheel first. The stress change during contact gradually changes from small to large, which can relieve the impact force at the initial contact of the annular grinding wheel, improve the stability of grinding. At the same time, the inclined contact can increase the length of the contact generatrix between the annular grinding wheel and the workpiece during grinding, increase the grinding work area, improve the grinding efficiency, and the contact with the long generatrix can make the grinding area of the annular grinding wheel and the workpiece surface distributed on a longer contact surface, reduce the local force concentration, contribute to stable grinding, reduce the force concentration in a single direction, contribute to maintaining the smoothness of grinding, and improve the grinding quality.

[0020] 3. By adjusting the position of the first motor, the ring grinding wheel can be switched between high-speed rotary grinding and low-speed reciprocating grinding. High-speed grinding is initially used for rapid processing, and low-speed grinding is used at the end to improve the surface quality and accuracy, effectively enhancing the grinding quality. Moreover, when switching to high-speed grinding, driven by the grinding driving force, air is blown on one side of the ring grinding wheel and simultaneously sucked on the other side, which can form a stable circulating air flow in the grinding area, reduce the air flow turbulence near the ring grinding wheel during high-speed grinding, enhance the stability of the air flow in the grinding area, thereby improving the absorption effect of dust and debris during grinding, reducing the escape of dust and debris during high-speed grinding work, and effectively reducing the impact and pollution of the grinding work on the environment.

[0021] 4. During low-speed reciprocating grinding, the gear ring reciprocates to perform reciprocating grinding on the workpiece surface. This can not only grind the workpiece surface from different angles and reduce the wear of the ring grinding wheel in a single direction, but also through the design of the sliding movable teeth, during one cycle of the reciprocating movement of the slide bar, the driving teeth and the movable teeth can drive the gear ring to rotate clockwise by a distance less than the distance of driving the gear ring to rotate counterclockwise. While the slide bar drives the gear ring to reciprocate, it can also drive the gear ring to slowly rotate counterclockwise, ensuring uniform wear of all parts inside the ring grinding wheel, making the wear of the ring grinding wheel more uniform, not only improving the machining accuracy, but also extending the service life of the ring grinding wheel and enhancing the economic benefits of processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0023] Figure 1 is the overall schematic diagram of the present invention.

[0024] Figure 2 is the overall external schematic diagram of the grinding machine of the present invention.

[0025] Figure 3 is the overall internal schematic diagram of the grinding machine of the present invention.

[0026] Figure 4 is the present invention Figure 3 is the enlarged schematic diagram at A of the present invention.

[0027] Figure 5 is the overall schematic diagram of the transmission mechanism of the present invention.

[0028] Figure 6 is the internal schematic diagram of the slide bar of the present invention.

[0029] Figure 7 It is an overall schematic diagram of the linkage mechanism of the present invention.

[0030] Figure 8 It is a schematic diagram of the linkage mechanism of the present invention from another angle.

[0031] Figure 9 It is a schematic diagram of the interior of the piston tube of the present invention.

[0032] Figure 10 It is a schematic diagram of the annular grinding wheel and the workpiece of the present invention.

[0033] Figure 11 It is a schematic diagram of the interlaced axes of the annular grinding wheel and the workpiece of the present invention and a comparative schematic diagram when the annular grinding wheel rotates to different positions.

[0034] Figure 12 It is a schematic diagram comparing internal cutting grinding and external cutting grinding during the grinding process of the present invention.

[0035] Figure 13 It is a schematic diagram of the vibration displacement of the keyway area during internal and external cutting and grinding of the present invention.

[0036] Legend:

[0037] 100. Grinding machine; 101. Annular grinding wheel; 102. Blowing groove; 103. Suction groove; 104. Spray pipe; 105. Gear ring; 106. First hydraulic press; 107. Motor one; 108. Gear one; 109. Second hydraulic press; 110. Slide one; 111. Gear two; 112. Slide two; 113. Rotating wheel; 114. Liquid storage tank; 115. Slide; 116. Block; 117. Driving tooth; 118. Movable tooth; 119. Limit block; 120. Toggle tooth; 121. Fan; 122. Impeller group; 123. Gear three; 124. Piston tube; 125. Ratchet; 126. Piston block; 127. Liquid inlet pipe; 128. Liquid discharge pipe; 129. Turntable; 200. Fixture; 300. Workpiece; 400. Loading and unloading robot. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0039] Reference Figure 1-11The present invention provides a grinding method for grinding the outer circle of a part by grinding the inner circle of a grinding wheel. The equipment used in the grinding method includes a grinding machine 100, a fixture 200, an annular grinding wheel 101, a workpiece 300 and a loading and unloading robot 400. The inner part of the grinding machine 100 is rotatably connected with a gear ring 105. The two sides of the gear ring 105 are symmetrically designed with blowing grooves 102 and suction grooves 103. The inner side of the grinding machine 100 is provided with a spray pipe 104 with an opening facing the gear ring 105. The inner part of the grinding machine 100 is provided with a first hydraulic press 106. The telescopic end of the first hydraulic press 106 is connected with a motor 107. The output end of the motor 107 is provided with a gear 108 matched with the gear ring 105. The inner part of the grinding machine 100 is provided with a second hydraulic press 109. The telescopic end of the second hydraulic press 109 is connected with a slide seat 110. The inner sliding part of the grinding machine 100 is provided with a second hydraulic press 109. A slide seat 112 is connected, a liquid storage tank 114 is arranged on the top of the slide seat 112, a transmission mechanism is arranged inside the grinding machine 100, the transmission mechanism includes a gear 111 arranged on the side wall of the slide seat 110, the gear 111 cooperates with the gear 108, a slide bar 115 is slidably connected to the surface of the slide seat 110, the end of the slide bar 115 and the side wall of the gear 111 are provided with a connecting rod for transmission, a driving tooth 117 and a toggle tooth 120 are arranged on the surface of the slide bar 115, a movable tooth 118 is slidably connected inside the slide bar 115, and a limit block 119 extending to the outside of the slide bar 115 is arranged on the side wall of the movable tooth 118, a stop block 116 cooperating with the limit block 119 is arranged inside the grinding machine 100, and a linkage mechanism for performing different auxiliary work on grinding according to different speeds is arranged inside the grinding machine 100;

[0040] The grinding method comprises the following steps:

[0041] S1: clamping the workpiece 300 by the fixture 200 and adjusting the processing parameters;

[0042] S2: Start the motor 107 to drive the gear ring 105 to rotate at high speed to grind the workpiece 300 at high speed;

[0043] S3: Start the first hydraulic press 106 and the second hydraulic press 109 to change the driving mode, and drive the gear ring 105 to reciprocate to grind the workpiece 300 at a low speed.

[0044] It should be noted that the base of the fixture 200 is provided with a lifting motor, a linear motor, etc., which are used to drive the fixture 200 to advance and lift toward the workpiece 300, thereby ensuring the adjustment of the grinding processing parameters of the workpiece 300. A rotating motor is also provided inside the fixture 200, which can drive the workpiece 300 to rotate during grinding, thereby ensuring uniform grinding of all parts of the surface.

[0045] It should be noted that the driving workpiece 300 is an integral cylindrical shaft with a keyway provided on its surface.

[0046] Furthermore, a spring is arranged between the movable tooth 118 and the slide bar 115, the number of driving teeth 117 is greater than the number of movable teeth 118, the movable teeth 118 and the driving teeth 117 are continuously distributed, and the gaps between the teeth are the same, and the gap between the driving teeth 117 and the toggle teeth 120 is greater than the tooth spacing between the driving teeth 117 and the movable teeth 118.

[0047] Reference Figure 2-9 The linkage mechanism includes a gear three 123 and a fan 121 arranged inside the slide seat 2 112, an impeller group 122 is arranged inside the fan 121, the gear three 123 cooperates with the gear ring 105, the output shaft of the gear three 123 is connected with the impeller group 122, a piston tube 124 is arranged inside the slide seat 2 112, a turntable 129 is rotatably connected inside the piston tube 124, a ratchet 125 for one-way transmission is arranged between the rotating shaft of the turntable 129 and the rotating shaft of the gear three 123, a piston block 126 is slidably connected inside the piston tube 124, a connecting rod for transmission is arranged between the piston block 126 and the turntable 129, a discharge pipe 128 for discharging liquid connected to the liquid spray pipe 104 is arranged at the top of the piston tube 124, and a liquid inlet pipe 127 for inletting liquid connected to the liquid storage tank 114 is arranged at the top of the piston tube 124.

[0048] Furthermore, two groups of air suction grooves 103 and air blowing grooves 102 are symmetrically distributed on the inner side of the grinding machine 100 . A pipe connected to the air inlet of the fan 121 is arranged inside the air suction groove 103 , and a pipe connected to the exhaust port of the fan 121 is arranged inside the air blowing groove 102 .

[0049] Furthermore, the grinding machine 100 is internally rotatably connected to a rotating wheel 113 , and two groups of support rods are symmetrically arranged along the center of the side wall of the rotating wheel 113 , one group of support rods is connected to the slide 110 , and the other group is connected to the slide 2 112 .

[0050] It should be noted that the axis of the circular machining groove opened on the inner side of the annular grinding wheel 101 is designed to be staggered with the axis of the annular grinding wheel 101, the annular grinding wheel 101 is installed at an angle on the inner side of the gear ring 105, and the axis of the circular machining groove on the inner side of the annular grinding wheel 101 coincides with the axis of the workpiece 300 and the gear ring 105.

[0051] The working process of the grinding method of grinding the outer circle of a part with a grinding wheel inner circle is as follows:

[0052] First, the loading and unloading robot 400 is used to control the loading and unloading, and the fixture 200 is used to clamp and fix the workpiece 300. Then, the motor connected to the fixture 200 drives the fixture 200 to drive the workpiece 300 to advance towards the grinding machine 100 and keep rotating, so as to grind the workpiece 300. In the initial stage of grinding, high-speed grinding can be selected to quickly remove surface defects to reach the target roughness. During this process, the first motor 107 is powered on and started to drive the first gear 108 to rotate, which in turn drives the gear ring 105 to rotate at high speed. At the same time, it can drive the annular grinding wheel 101 to rotate at high speed to perform high-speed grinding on the workpiece 300.

[0053] During the high-speed grinding of the workpiece 300, due to the staggered design of the surface axes of the workpiece 300 and the annular grinding wheel 101, when the workpiece 300 advances, it gradually advances in an inclined direction with respect to the annular grinding wheel 101. When the workpiece 300 contacts the inclined annular grinding wheel 101, the edge angle part of the rectangular keyway first contacts the annular grinding wheel 101, so that the stress change during contact gradually changes from small to large, which can relieve the impact force at the initial contact of the annular grinding wheel 101, improve the stability of grinding, increase the length of the contact busbar between the annular grinding wheel 101 and the workpiece 300 during grinding, expand the grinding working area, improve the grinding efficiency, and the long-busbar contact can make the grinding area of the surface of the annular grinding wheel 101 and the workpiece 300 distributed on a longer contact surface, reduce the local stress concentration, contribute to the stability of grinding, reduce the force concentration in a single direction, contribute to maintaining the smoothness of grinding, and improve the grinding quality.

[0054] At the same time, it should be noted that referring to Figure 11 , through the axis offset design of the annular grinding wheel 101, the annular grinding wheel 101 can perform a reciprocating swing motion in the horizontal direction while performing the grinding work, which can increase the grinding coverage area, improve the grinding efficiency and uniformity.

[0055] It should be noted that in order to reflect the advantages and effects of the improved grinding method of this device compared with the traditional external cutting grinding, referring to Figure 12-13, let the width of the rectangular groove C opened on the surface of the workpiece 300 be a, let the radius of the annular grinding tool A that is internally tangent to the workpiece 300 be R1, and the radius of the grinding tool B that is externally tangent to the workpiece 300 is also R1. As shown in the figure, draw auxiliary lines. The auxiliary lines are the center lines of the workpiece 300, the annular grinding tool A, the grinding tool B, and the rectangular groove C. Draw the tangents of the workpiece 300, the annular grinding tool A, and the grinding tool B as auxiliary lines. Extend the rectangular groove C. The extension of the rectangular groove C intersects the grinding tool B. Connect the intersection point with the center of the grinding tool B. Let the angle between this connection line and the center line be α1. At the same time, draw the connection line L4 between the intersection point and the tangent point. The straight-line distance from the tangents of the workpiece 300, the annular grinding tool A, and the grinding tool B to the edge of the rectangular groove C is L1. The distance from the intersection point of the extension of the rectangular groove C and the annular grinding tool A to the tangent is L5. The distance between the intersection point of the extension of the rectangular groove C and the tangent and the grinding tool B is L2. Since the annular grinding tool A and the grinding tool B are symmetrically distributed along the tangent and have the same radius, the lengths of L2 and L5 are the same. Therefore, when the annular grinding tool A and the grinding tool B rotate to the position corresponding to the rectangular groove of the workpiece 300, when the annular grinding tool A and the workpiece 300 need to be kept in close contact under mechanical pressure to ensure the grinding force, the maximum relative displacement distance between the annular grinding tool A and the workpiece 300 , the maximum relative displacement distance between the grinding tool B and the workpiece 300 , the distance difference between the two , therefore, compared with the traditional external tangential grinding method, the maximum relative displacement distance generated when the internal tangential grinding method adopted by this device contacts the rectangular groove opened on the surface of the grinding tool and the workpiece 300 can be reduced by at most , at the same time, , , therefore, , therefore, compared with the traditional external tangential grinding method, the internal tangential grinding of this device can effectively reduce the vibration amplitude when grinding to the keyway area opened on the surface of the workpiece 300, thereby reducing the impact force and vibration. It can not only reduce the vibration and noise during grinding, improve the machining accuracy and the quality of the part surface, but also reduce the wear of the equipment, extend the service life of the device, and improve the economic benefits of the grinding process.

[0056] Furthermore, when the workpiece 300 is ground at high speed, the gear ring 105 rotates at high speed, driving the gear three 123 to rotate at high speed, which can then drive the impeller group 122 to rotate at high speed, and then the gas is blown out through the blowing groove 102 toward the suction groove 103 through the fan 121, and the gas is sucked in through the suction groove 103. At the same time, the dust is filtered and collected by the filter screen arranged inside the suction groove 103, so that during high-speed grinding, the grinding driving force is driven to blow air on one side of the annular grinding wheel 101 and synchronously suck air on the other side, so that a stable circulating airflow can be formed in the grinding area, the turbulence of the airflow near the annular grinding wheel 101 during high-speed grinding is reduced, and the stability of the airflow in the grinding area is improved, thereby improving the absorption effect of dust and debris during grinding, reducing the escape of dust and debris during high-speed grinding, and effectively reducing the impact and pollution of grinding on the environment.

[0057] The workpiece 300 is processed to a set roughness by high-speed grinding, and the surface of the workpiece 300 is further processed by low-speed grinding. At this time, the motor 107 is powered off, and the first hydraulic press 106 and the second hydraulic press 109 are powered on. The first hydraulic press 106 is powered on to push the motor 107 to drive the gear 108 to move downward until it contacts and meshes with the gear 2 111. The second hydraulic press 109 pushes the slide 110 to rise, so that the slide bar 115 rises until the driving tooth 117 and the movable tooth 118 are in contact and mesh with the gear ring 105. At the same time, the rise of the slide 110 can drive the rotating wheel 113 to rotate through the support rod connected to the rotating wheel 113, thereby driving the slide 2 112 to move downward. The downward movement of the slide 2 112 can drive the gear 3 123 to move downward to the bottom tooth group of the gear 3 123 and the toggle tooth 120. The position corresponds, and then the motor 107 is started to rotate at a low speed. The rotation of the motor 107 drives the gear 2 111 to rotate through the gear 108. The rotation of the gear 2 111 can drive the slide 115 to slide back and forth along the surface of the slide seat 110 through the connecting rod between the gear 2 111 and the slide 115. The gear ring 105 is driven to reciprocate by the engagement of the driving teeth 117 and the movable teeth 118 with the gear ring 105, and the surface of the workpiece 300 is reciprocated and ground. Through the reciprocating grinding of the workpiece 300, not only can the surface of the workpiece 300 be ground from different angles, the wear of the annular grinding wheel 101 in a single direction can be reduced, and the wear of the annular grinding wheel 101 can be made more uniform, thereby improving the processing accuracy, and the service life of the annular grinding wheel 101 can be extended, thereby improving the economic benefits of the processing.

[0058] Furthermore, it should be noted that in the initial position, the group of teeth in the middle of the bottom of the gear ring 105 is located in the middle position of the tooth group area composed of the driving teeth 117 and the movable teeth 118. When the slide bar 115 slides from the direction of the movable teeth 118 to the direction of the driving teeth 117, taking the figure as an example, the tooth group is evenly divided, the left tooth group is the movable teeth 118 plus a group of driving teeth 117, and the right side is three groups of driving teeth 117. The left group of driving teeth 117 can drive the gear ring 105 to rotate a group of driving teeth 117 through the gear ring 105. The tooth group continues to rotate, and the gear ring 105 tooth group contacts and meshes with the movable teeth 118. After the limit block 119 contacts the stop block 116, the movable teeth 118 also slide inside the slide bar 115 as the slide bar 115 slides, so that during the sliding process of the slide bar 115, the movable teeth 118 only position the gear ring 105, mesh and lock the tooth group, and do not transmit. When the gear second 111 rotates to pull the slide bar 115 toward the gear group When the wheel 111 moves in the direction of the second wheel 111, the rotation of the gear ring 105 first drives the movable tooth 118 to reset, and contacts and meshes with the driving tooth 117 on the left side for transmission, and rotates a group of driving teeth 117 by a tooth gap distance. When the gear ring 105 passes the three groups of driving teeth 117 on the right side, the three groups of driving teeth 117 all drive the gear ring 105 to rotate. Therefore, when the slide bar 115 reciprocates for one cycle, the driving teeth 117 and the movable teeth 118 drive the gear ring 105 to rotate clockwise The distance is less than the distance that drives the gear ring 105 to rotate counterclockwise. Therefore, while the slide bar 115 drives the gear ring 105 to reciprocate, it can also drive the gear ring 105 to rotate slowly in the counterclockwise direction through the difference in the moving distance of the reciprocating motion. In this process, when the movable tooth 118 moves, it ensures engagement with the gear ring 105 to avoid tooth knocking, thereby ensuring uniform wear on the inner side of the annular grinding wheel 101 and improving the wear uniformity and service life of the annular grinding wheel 101.

[0059] At the same time, during low-speed grinding, the reciprocating motion of the slide bar 115 can also drive the downwardly moved gear three 123 through the passage and meshing of the toggle tooth 120. When the toggle tooth 120 reciprocates to drive the gear three 123 to rotate, the ratchet 125 can be set to make the toggle tooth 120 drive the turntable 129 to always rotate in the same direction during the cyclic reciprocating transmission process, thereby ensuring the completion and progress of the piston connecting rod movement between the turntable 129 and the piston block 126. When the turntable 129 rotates, the piston block 126 is in the piston tube 124. The piston movement can be performed, and the mixed solvent such as grinding liquid, cooling lubricant, cleaning agent, etc. in the liquid storage tank 114 can be sucked into the upper part of the piston block 126 through the one-way valve inside the liquid inlet pipe 127. When the piston block 126 moves upward, the solution is pumped to the spray pipe 104 and sprayed toward the lowest point of the annular grinding wheel 101 and the contact area with the workpiece 300, so as to automatically spray auxiliary protection for the grinding area. With the assistance of grinding liquid and lubricant during low-speed grinding, the grinding efficiency is improved, the friction and heat generation are reduced, and the surface processing quality and processing accuracy are effectively improved.

[0060] It should be noted that the specific model specifications of the motor and the hydraulic press need to be selected and determined according to the actual specifications of the device, etc. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated in detail.

[0061] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for grinding the outer circle of a part with a grinding wheel, characterized in that: The equipment used in the grinding method comprises a grinding machine (100), a fixture (200), an annular grinding wheel (101), a workpiece (300) and a loading and unloading robot (400); a gear ring (105) is rotatably connected inside the grinding machine (100); air blowing grooves (102) and air suction grooves (103) are symmetrically designed on both sides of the gear ring (105); a liquid spray pipe (104) with an opening facing the gear ring (105) is arranged on the inner side of the grinding machine (100); ) is provided with a first hydraulic press (106) inside, the telescopic end of the first hydraulic press (106) is connected to a motor 1 (107), the output end of the motor 1 (107) is provided with a gear 1 (108) matched with the gear ring (105), the grinding machine (100) is provided with a second hydraulic press (109) inside, the telescopic end of the second hydraulic press (109) is connected to a slide seat 1 (110), and the grinding machine (100) is slidably connected to a slide seat 2 (112) inside, A liquid storage tank (114) is arranged on the top of the second slide seat (112), and a transmission mechanism is arranged inside the grinding machine (100), wherein the transmission mechanism comprises a second gear (111) arranged on the side wall of the first slide seat (110), wherein the second gear (111) cooperates with the first gear (108), and a slide bar (115) is connected to the surface of the first slide seat (110) in a limited sliding manner, and a connecting rod for transmission is arranged at the end of the slide bar (115) and the side wall of the second gear (111), and the slide bar (115) is connected to the side wall of the second gear (111). The surface of the slide bar (115) is provided with a driving tooth (117) and a toggle tooth (120), the interior of the slide bar (115) is slidably connected with a movable tooth (118), the side wall of the movable tooth (118) is provided with a limit block (119) extending to the outside of the slide bar (115), the interior of the grinder (100) is provided with a stop block (116) matched with the limit block (119), and the interior of the grinder (100) is provided with a linkage mechanism for performing different auxiliary operations on grinding according to different rotation speeds; The linkage mechanism comprises a gear three (123) and a fan (121) arranged inside the second slide seat (112); an impeller group (122) is arranged inside the fan (121); the gear three (123) cooperates with the gear ring (105); the output shaft of the gear three (123) is connected to the impeller group (122); a piston tube (124) is arranged inside the second slide seat (112); a rotating disk (129) is rotatably connected inside the piston tube (124); the rotating disk (129) rotates A ratchet wheel (125) for one-way transmission is arranged between the shaft and the rotating shaft of the gear three (123); a piston block (126) is slidably connected inside the piston tube (124); a connecting rod for transmission is arranged between the piston block (126) and the rotating disk (129); a liquid discharge pipe (128) for discharging liquid and communicating with the liquid spray pipe (104) is arranged at the top of the piston tube (124); and a liquid inlet pipe (127) for inletting liquid and communicating with the liquid storage tank (114) is arranged at the top of the piston tube (124); The grinding method comprises the following steps: S1: clamping the workpiece (300) by the fixture (200) and adjusting the processing parameters; S2: starting the motor 1 (107) to drive the gear ring (105) to rotate at high speed to grind the workpiece (300) at high speed; S3: starting the first hydraulic press (106) and the second hydraulic press (109), changing the driving mode, and driving the gear ring (105) to reciprocate to grind the workpiece (300) at a low speed.

2. A method for grinding the outer circle of a part with a grinding wheel according to claim 1, characterized in that: A spring is provided between the movable teeth (118) and the slide bar (115); the number of the drive teeth (117) is greater than the number of the movable teeth (118); the movable teeth (118) and the drive teeth (117) are continuously distributed and have the same gap between the teeth; and the gap between the drive teeth (117) and the toggle teeth (120) is greater than the tooth spacing between the drive teeth (117) and the movable teeth (118).

3. A method for grinding the outer circle of a part by grinding the inner circle of a grinding wheel according to claim 1, characterized in that: Two groups of the air suction grooves (103) and the air blowing grooves (102) are symmetrically distributed on the inner side of the grinding machine (100); a pipe connected to an air inlet of a fan (121) is arranged inside the air suction grooves (103); and a pipe connected to an air outlet of the fan (121) is arranged inside the air blowing grooves (102).

4. A method for grinding the outer circle of a part by grinding the inner circle of a grinding wheel according to claim 1, characterized in that: The grinding machine (100) is rotatably connected to a rotating wheel (113) inside, and two groups of support rods are symmetrically arranged along the center of the side wall of the rotating wheel (113), one group of support rods is connected to the first slide seat (110), and the other group is connected to the second slide seat (112).

5. The method for grinding the outer circle of a part by grinding the inner circle of a grinding wheel according to claim 1, characterized in that: The axis of the circular machining groove on the inner side of the annular grinding wheel (101) is designed to be staggered with the axis of the annular grinding wheel (101); the annular grinding wheel (101) is designed to be installed obliquely on the inner side of the gear ring (105); and the axis of the circular machining groove on the inner side of the annular grinding wheel (101) coincides with the axis of the workpiece (300) and the gear ring (105).

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