Grinding method for grinding outer circle of part by using inner circle of grinding wheel

Abstract

The invention discloses a grinding method for grinding an outer circle of a part through an inner circle of a grinding wheel, and belongs to the technical field of grinding machining.Equipment adopted by the grinding method comprises a grinding machine, a clamp, an annular grinding wheel, a workpiece and a feeding and discharging robot, a gear ring is rotationally connected to the interior of the grinding machine, and an air blowing groove and an air suction groove are symmetrically designed in the two sides of the gear ring; a liquid spraying pipe with an opening facing the gear ring is arranged on the inner side of the grinding machine, a first hydraulic machine is arranged in the grinding machine, the telescopic end of the first hydraulic machine is connected with a first motor, and a first gear matched with the gear ring is arranged at the output end of the first motor. According to the invention, the workpiece and the surface axis of the annular grinding wheel are designed in a staggered manner, so that the workpiece and the annular grinding wheel are gradually progressive in an inclined direction during progressive, the edge angle part of the rectangular key slot of the workpiece is firstly contacted with the annular grinding wheel, and the stress change is gradually changed from small to large during contact, so that the impact force during initial contact of the annular grinding wheel can be relieved; and the grinding stability can be kept, and the grinding quality can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of grinding processing, in particular to a grinding method for grinding the outer circle of a part by using the inner circle of a grinding wheel. Background Art

[0002] The shaft parts of the automobile transmission system are generally machined from low-carbon alloy steel billets. After carburizing and quenching heat treatment, the reserved grinding allowance layer needs to be ground to meet the product's dimensional accuracy, form and position tolerances, surface roughness, waviness, etc. Requirements. Generally, the subsequent grinding process will be carried out to deal with surface defects, improve surface quality, and improve the surface quality and accuracy of the shaft, thereby ensuring its reliability and performance during automobile operation.

[0003] The grinding process technology in the existing grinding process generally uses a grinding wheel to grind along the outer surface of the shaft. For shafts with keyways such as transmission shafts, when the rotating grinding wheel progressively passes through the keyway area, the shape of the grinding area changes, and the grinding contact area and contact stress between the grinding wheel and the shaft will change, which will in turn cause changes in the cutting stress of the grinding. This change can easily cause the blade to vibrate, affecting the grinding work, causing defects and damage to the grinding area, and affecting the accuracy and quality of the grinding.

[0004] How to invent a method to improve these problems has become an urgent problem to be solved by technicians in this field. Summary of the invention

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

[0006] The present invention is achieved in that:

[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 on the inner side of the grinding machine, a pipe connected to the air inlet of the fan is arranged inside the air suction groove, and a pipe connected to the exhaust port of the fan is arranged inside the air blowing groove.

[0015] Preferably, a rotating wheel is rotatably connected inside the grinding machine, and two groups of support rods are symmetrically arranged along the center of the side wall of the rotating wheel, one group of support rods is connected to the first slide seat, and the other group is connected to the second slide seat.

[0016] Preferably, the axis of the circular machining groove on the inner side of the annular grinding wheel is staggered with the axis of the annular grinding wheel, the annular grinding wheel is tiltedly installed on the inner side of the gear ring, and the axis of the circular machining groove on the inner side of 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:

[0018] 1. Use internal cutting grinding technology. Compared with the traditional external cutting grinding method, this device can increase the contact area during grinding when grinding the surface of the workpiece with a keyway, and provide support for the workpiece at the same time, so that the workpiece is evenly stressed during processing, avoiding deformation during the processing due to excessive local stress, and reducing the vibration and impact force of the device and the workpiece when grinding to the keyway area, improving the stability of the processing process, improving the processing accuracy and the quality of the part surface, and making the surface waviness of the workpiece after processing ideal, thereby improving the processing quality and level of the grinding work, while improving the overall quality of the workpiece after processing and improving the economic benefits of production.

[0019] 2. The workpiece and the annular grinding wheel surface axis are staggered, so that the workpiece and the annular grinding wheel are gradually advanced in an inclined direction, so that the edge corner of the rectangular keyway of the workpiece contacts the annular grinding wheel first, and the stress changes gradually from small to large during contact, which can alleviate the impact force of the annular grinding wheel during initial contact and 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 working area, and improve the grinding efficiency. Moreover, the contact of the long generatrix can make the grinding area of ​​the annular grinding wheel and the workpiece surface distributed on a longer contact surface, reducing local force concentration, which is conducive to stable grinding, reducing force concentration in a single direction, helping to maintain smooth grinding and improve grinding quality.

[0020] 3. By adjusting the position of motor 1, the annular grinding wheel can be switched between high-speed rotation grinding and low-speed reciprocating grinding. High-speed grinding is used for rapid processing at the beginning, and low-speed grinding is used to improve surface quality and precision at the end, which effectively improves the grinding quality. Moreover, when switching to high-speed grinding, the grinding driving force is used to blow air on one side of the annular grinding wheel and simultaneously inhale air on the other side, which can form a stable circulating airflow in the grinding area, reduce the turbulence of the airflow near the annular grinding wheel during high-speed grinding, and improve the stability of the airflow 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, and effectively reducing the impact and pollution of grinding on the environment.

[0021] 4. During low-speed reciprocating grinding, the gear ring reciprocates and grinds the workpiece surface reciprocatingly. It can not only grind the workpiece surface from different angles and reduce the wear of the annular grinding wheel in a single direction, but also, through the design of the sliding movable teeth, the distance that the driving teeth and the movable teeth drive the gear ring to rotate clockwise during one cycle of the slider reciprocating motion is smaller than the distance that drives the gear ring to rotate counterclockwise. While the slider drives the gear ring to reciprocate, it can also drive the gear ring to rotate slowly in the counterclockwise direction, ensuring uniform wear on all parts of the inner side of the annular grinding wheel. The wear of the annular grinding wheel is more uniform, which not only improves the processing accuracy, but also prolongs the service life of the annular grinding wheel and improves the economic benefits of processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

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

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

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

[0026] Figure 4 The present invention Figure 3 An enlarged schematic diagram of point A.

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

[0028] Figure 6 Schematic diagram of the interior of the slider 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] Fig. 9 It is a schematic diagram of the interior of the piston tube of the present invention.

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

[0033] Fig.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] Fig.12 It is a schematic diagram comparing internal cutting grinding and external cutting grinding during the grinding process of the present invention.

[0035] Fig.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 is controlled by the loading and unloading robot 400, and the workpiece 300 is clamped and fixed by the fixture 200. Then, the motor connected to the fixture 200 drives the fixture 200 to drive the workpiece 300 to advance toward the grinder 100 and keep rotating, and the workpiece 300 is ground. In the early stage of grinding, high-speed grinding can be selected to quickly remove surface defects to achieve the target roughness. During this process, the motor 107 is powered on to start and drive the gear 108 to rotate, and then drive the gear ring 105 to rotate at high speed, and at the same time, it can drive the annular grinding wheel 101 to rotate at high speed, and the workpiece 300 is ground at high speed.

[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 the annular grinding wheel 101. When the workpiece 300 contacts the inclined annular grinding wheel 101, the edge corner of the rectangular keyway contacts the annular grinding wheel 101 first, so that the stress changes gradually from small to large during contact, which can alleviate the impact force of the annular grinding wheel 101 during initial contact, improve the stability of grinding, increase the length of the contact generatrix when the annular grinding wheel 101 and the workpiece 300 are ground, increase the grinding working area, and improve the grinding efficiency. Moreover, the contact of the long generatrix can make the grinding area of ​​the annular grinding wheel 101 and the surface of the workpiece 300 distributed on a longer contact surface, reducing local force concentration, which is conducive to stable grinding, reducing force concentration in a single direction, and helping to maintain smooth grinding and improve grinding quality.

[0054] It should also be noted that, referring to Fig.11 By designing the axis offset of the annular grinding wheel 101, the annular grinding wheel 101 can perform reciprocating swinging motion in the horizontal direction while grinding, which can increase the grinding coverage and 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, Figure 12-13, assuming that the width of the rectangular groove C opened on the surface of the workpiece 300 is a, assuming that the radius of the annular grinding tool A for internal cutting grinding with the workpiece 300 is R1, and the radius of the grinding tool B for external cutting grinding with the workpiece 300 is also R1, as shown in the figure, make 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, the tangent lines of the workpiece 300, the annular grinding tool A, the grinding tool B are made as auxiliary lines, the extension line of the rectangular groove C is made, the extension line of the rectangular groove C intersects with the grinding tool B, the intersection point is connected with the center of the grinding tool B, the angle between this connection line and the center line is set to α1, and at the same time, the intersection point and the tangent point are connected by L4. The straight-line distance between the tangent of tool A and tool B and the edge of rectangular groove C is L1, the distance between the intersection of the extension line of rectangular groove C and annular tool A to the tangent is L5, and the distance between the extension line of rectangular groove C and the intersection of the tangent and tool B is L2. Since annular tool A and tool B are symmetrically distributed along the tangent and have the same radius, the lengths of L2 and L5 are the same. Therefore, when annular tool A and tool B rotate to the position corresponding to the rectangular groove of workpiece 300, annular tool A and workpiece 300 need to be kept close to each other under mechanical pressure to ensure grinding force, the maximum relative displacement distance between annular tool A and workpiece 300 is , 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 cutting grinding method, the maximum relative displacement distance generated by the internal cutting grinding method adopted by the present device when the grinding tool contacts the rectangular groove opened on the surface of the workpiece 300 can be reduced by at most ,at the same time, , ,therefore, Therefore, compared with the traditional external cutting grinding method, the internal cutting grinding of the present 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 reducing the vibration. It can not only reduce the vibration and noise during the grinding process, improve the processing accuracy and the quality of the part surface, but also reduce the wear of the equipment, increase the 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 hydraulic press need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

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

Claims

1. A method for grinding the outer circle of a part with an inner circle of 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 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: 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).

4. A method for grinding the outer circle of a part with a grinding wheel according to claim 3, 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).

5. A method for grinding the outer circle of a part by grinding the inner circle of a grinding wheel according to claim 3, 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).

6. A method for grinding the outer circle of a part by grinding the inner circle of a grinding wheel according to claim 3, 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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