A double face grinder for machining bearing rings

Abstract

The utility model relates to two end face grinding machine field discloses a two end face grinding machine for processing bearing sleeve, include: lower stand, lower stand top fixed setting has hydraulic cylinder, the hydraulic cylinder's hydraulic stem is fixedly arranged with upper stand, be provided with bearing sleeve two end face polishing mechanism on lower stand and upper stand, bearing sleeve two end face polishing mechanism includes servo motor no.

Description

Technical Field

[0001] This utility model relates to the field of double-end face grinding technology, and in particular to a double-end face grinding machine for machining bearing rings. Background Technology

[0002] In the bearing manufacturing industry, the parallelism, flatness, and surface roughness of the double-end faces of bearing rings are the core indicators that determine the rotational accuracy and service life of bearings. As a key piece of equipment for machining the end faces of bearing rings, the machining accuracy, efficiency, and stability of double-end face grinders directly affect the overall quality of bearing products.

[0003] Currently, when grinding bearing rings, it is often necessary to first grind one side, and then switch the bearing ring position to grind the other side. This operation is cumbersome and time-consuming. In addition, the grinding wheels of traditional grinding machines need to be frequently stopped and removed for inspection and maintenance, which restricts the improvement of production efficiency. Therefore, it is necessary to design a double-end face grinding machine for processing bearing rings to solve the above problems.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a double-end face grinder for machining bearing rings, in order to solve the above-mentioned problems.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a double-end face grinder for machining bearing rings, comprising: The lower column is equipped with a hydraulic cylinder fixedly mounted on its top, and an upper column is fixedly mounted on the hydraulic rod of the hydraulic cylinder. The lower column and the upper column are equipped with a bearing ring double-end face grinding mechanism. The bearing ring double-end face grinding mechanism includes a servo motor, a grinding head, a grinding head body, a spindle, a grinding wheel, a toothed pulley, a toothed belt, and a feed assembly. The spindle is rotatably mounted on the grinding head body. The grinding head is fixedly connected to the spindle by bolts. The grinding wheel is fixedly connected to the grinding head by bolts. The output end of the servo motor and the outer side of the spindle are both fixedly fitted with toothed pulleys. The toothed pulleys mesh with the toothed belt. The servo motor is fixedly mounted on the grinding head body.

[0007] A further configuration of this utility model is as follows: the feed assembly includes a housing, a second servo motor, a first gear, a second gear, a helical gear, a connecting block, a ball screw, and a worm gear. The second servo motor is fixedly mounted on the housing, and its output end is fixedly connected to the first gear. A synchronous shaft is rotatably mounted on the housing. The second gear is fixedly sleeved on the outside of the synchronous shaft, and the first gear meshes with the second gear. The worm gear is fixedly sleeved on the outside of the synchronous shaft. The connecting block is fixedly connected to the grinding head body. The ball screw is threadedly connected to the connecting block. The helical gear is fixedly connected to the ball screw, and the worm gear meshes with the helical gear. A grinding wheel dressing mechanism is provided on the lower column.

[0008] The present invention is further configured as follows: the grinding wheel dressing mechanism includes a support, a connecting shaft, a second toothed pulley, a second toothed belt, a dressing arm, a clamping block, and an oilstone. The support is fixedly installed on the lower column, and a third servo motor is fixedly installed on the support. The connecting shaft is rotatably installed on the support. The output end of the third servo motor and the outer side of the connecting shaft are both fixedly fitted with the second toothed pulley. The second toothed pulley meshes with the second toothed belt. The dressing arm is fixedly connected to the connecting shaft. The clamping block is fixedly connected to the dressing arm by bolts. The oilstone is fixedly installed on the clamping block.

[0009] By adopting the above technical solution, it is convenient to dress the grinding wheel.

[0010] A further feature of this invention is that a PLC controller is provided on the rear side of the upper column.

[0011] A further feature of this invention is that the number of housings is two, and the two housings are respectively fixedly connected to the lower column and the upper column.

[0012] By adopting the above technical solution, the installation position of the housing is limited.

[0013] A further feature of this invention is that a supporting foot is fixedly provided at the bottom of the lower column.

[0014] By adopting the above technical solution, the lower column is supported.

[0015] A further feature of this invention is that the number of grinding wheels is two, and they are arranged symmetrically, one above the other.

[0016] A further feature of this invention is that a guide member is fixedly provided at the top of the lower column, and the upper column is slidably sleeved on the outside of the guide member.

[0017] The beneficial effects of this utility model are: This utility model achieves synchronous grinding of the two end faces of the bearing rings by setting up two sets of symmetrical bearing ring grinding mechanisms and a hydraulically driven upper column lifting and adjusting structure. It eliminates the need for manual switching of the front and back of the rings, completely solving the problem of cumbersome and time-consuming operation of traditional grinding machines, greatly improving processing efficiency, ensuring the consistency of grinding amount on both end faces, and effectively improving the parallelism and flatness accuracy of the ring end faces. This invention, by setting up a grinding wheel dressing mechanism, eliminates the need to stop the machine to disassemble the grinding wheel. The servo motor drives the oilstone to precisely adhere to the grinding wheel surface for online dressing, quickly restoring the sharpness and precision of the grinding wheel. This simplifies the grinding wheel maintenance process, reduces downtime, avoids operational errors caused by manual dressing, ensures the stability of continuous processing, and further improves production efficiency and product qualification rate. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a double-end face grinder for processing bearing rings, as proposed in this utility model.

[0020] Figure 2 This utility model discloses a structural schematic diagram of the bearing ring double-end face grinding mechanism in a double-end face grinder for machining bearing rings. Figure 1 .

[0021] Figure 3 This utility model discloses a structural schematic diagram of the bearing ring double-end face grinding mechanism in a double-end face grinder for machining bearing rings. Figure 2 .

[0022] Figure 4 This is a schematic diagram of the grinding wheel dressing mechanism in a double-end face grinder for processing bearing rings, as proposed in this utility model.

[0023] In the diagram: 1. Lower column; 2. Hydraulic cylinder; 3. Upper column; 4. Servo motor one; 5. Grinding head; 6. Grinding head body; 7. Spindle; 8. Grinding wheel; 9. Toothed pulley one; 10. Toothed belt one; 11. Housing; 12. Servo motor two; 13. Gear one; 14. Gear two; 15. Helical gear; 16. Connecting block; 17. Ball screw; 18. Grinding wheel dressing mechanism; 181. Support; 182. Connecting shaft; 183. Toothed pulley two; 184. Toothed belt two; 185. Dressing arm; 186. Clamping block; 187. Oilstone; 19. Worm gear. Detailed Implementation

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0025] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] See Figure 1 , Figure 2 , Figure 3 and Figure 4 This utility model provides a double-end face grinder for machining bearing rings, comprising: The lower column 1 is fixedly equipped with a hydraulic cylinder 2 at its top. The upper column 3 is fixedly equipped on the hydraulic rod of the hydraulic cylinder 2. The lower column 1 and the upper column 3 are equipped with a bearing ring double-end face grinding mechanism. The bearing ring double-end face grinding mechanism includes a servo motor 4, a grinding head 5, a grinding head body 6, a spindle 7, a grinding wheel 8, a toothed pulley 9, a toothed belt 10, and a feed assembly. The spindle 7 is rotatably mounted on the grinding head body 6. The grinding head 5 is fixedly connected to the spindle 7 by bolts. The grinding wheel 8 is fixedly connected to the grinding head 5 by bolts. The output end of the servo motor 4 and the outer side of the spindle 7 are both fixedly fitted with toothed pulleys 9. The toothed pulleys 9 and toothed belts 10 mesh with each other. The servo motor 4 is fixedly mounted on the grinding head body 6.

[0027] With the above structure, firstly, the hydraulic cylinder 2 is started to adjust the position of the upper grinding wheel 8, so that the upper and lower grinding wheels 8 are aligned with the two ends of the bearing ring respectively. Then, the servo motor 4 is started, and the spindle 7 can be rotated by the cooperation of the toothed pulley 9 and the toothed belt 10, which in turn makes the two grinding wheels 8 rotate.

[0028] Specifically, the feed assembly includes a housing 11, a second servo motor 12, a first gear 13, a second gear 14, a helical gear 15, a connecting block 16, a ball screw 17, and a worm gear 19. The second servo motor 12 is fixedly mounted on the housing 11, and its output end is fixedly connected to the first gear 13. A synchronous shaft is rotatably mounted on the housing 11. The second gear 14 is fixedly sleeved on the outside of the synchronous shaft, and the first gear 13 meshes with the second gear 14. The worm gear 19 is fixedly sleeved on the outside of the synchronous shaft. The connecting block 16 is fixedly connected to the grinding head body 6. The ball screw 17 is threadedly connected to the connecting block 16. The helical gear 15 is fixedly connected to the ball screw 17. The worm gear 19 meshes with the helical gear 15. A grinding wheel dressing mechanism 18 is provided on the lower column 1.

[0029] With the above structure, the servo motor 12 is started, and the synchronous shaft can be rotated by the cooperation of gear 13 and gear 14. When the synchronous shaft rotates, it will drive the worm 19 to rotate, and the worm 19 will drive the helical gear 15 to rotate. The helical gear 15 is actually a worm wheel. The helical gear 15 drives the ball screw 17 to rotate, which will cause the connecting block 16 to move the grinding head 6, and then cause the two grinding wheels 8 to rotate and feed synchronously, so as to grind the two end faces of the bearing ring synchronously.

[0030] Specifically, the grinding wheel dressing mechanism 18 includes a support 181, a connecting shaft 182, a toothed pulley 183, a toothed belt 184, a dressing arm 185, a clamping block 186, and an oilstone 187. The support 181 is fixedly installed on the lower column 1, and a servo motor 3 is fixedly installed on the support 181. The connecting shaft 182 is rotatably installed on the support 181. The output end of the servo motor 3 and the outer side of the connecting shaft 182 are both fixedly fitted with toothed pulleys 183. The toothed pulleys 183 and the toothed belt 184 mesh with each other. The dressing arm 185 is fixedly connected to the connecting shaft 182. The clamping block 186 is fixedly connected to the dressing arm 185 by bolts. The oilstone 187 is fixedly installed on the clamping block 186.

[0031] With the above structure, when the grinding wheel 8 needs to be dressed, the servo motor 3 is started. Through the cooperation of the toothed pulley 2 183 and the toothed belt 2 184, the connecting shaft 182 can be rotated. The connecting shaft 182 drives the dressing arm 185 to rotate, so that the oilstone 187 on the clamping block 186 can rotate synchronously. The oilstone 187 can dress the two grinding wheels 8 simultaneously.

[0032] Specifically, a PLC controller is installed on the rear side of the upper column 3. It should be noted that the PLC controller can control the hydraulic cylinder 2 and the servo motor. By setting the program in advance, the two hydraulic cylinders 2 can work synchronously, as can the two servo motors 1 and 4 work synchronously, and the two servo motors 12 work synchronously. This is existing technology and will not be elaborated here.

[0033] Specifically, there are two housings 11, and the two housings 11 are fixedly connected to the lower column 1 and the upper column 3 respectively. It should be noted that the installation position of the housings 11 is limited.

[0034] Specifically, the bottom of the lower column 1 is fixedly equipped with a support foot, and there are two grinding wheels 8, which are symmetrically arranged at the top and bottom. It should be noted that this is to facilitate the simultaneous grinding of both ends of the bearing ring. The lower column 1 is also equipped with a mechanism for clamping the bearing ring. The clamping parts are driven by two hydraulic rods to clamp and fix the bearing ring. This is existing technology and will not be described in detail here.

[0035] Specifically, a guide is fixedly installed at the top of the lower column 1, and the upper column 3 is slidably sleeved on the outside of the guide. It should be noted that this allows the upper column 3 to move stably vertically.

[0036] Working principle: S1: After the equipment is started, the grinding parameters, such as the grinding wheel feed rate, grinding speed, and column lifting height, are preset through the PLC controller on the rear side of the upper column 3. Then, the PLC controller drives the hydraulic cylinder 2 on the top of the lower column 1 to work. The hydraulic rod of the hydraulic cylinder 2 extends and retracts, causing the upper column 3 to move vertically and smoothly along the guide member on the top of the lower column 1, thereby adjusting the distance between the upper column 3 and the corresponding grinding wheel 8 on the lower column 1, until the upper and lower grinding wheels 8 are precisely aligned with the upper and lower end faces of the bearing ring to be processed. At the same time, the clamping mechanism on the lower column 1 drives the clamping member to move through the front and rear hydraulic rods, firmly clamping the bearing ring in the preset grinding position, ensuring that the ring does not shift during the grinding process. S2: After the grinding preparation is completed, the PLC controller synchronously starts the servo motor 4 in the two sets of bearing ring double-end face grinding mechanisms. The output end of the servo motor 4 drives the spindle 7 on the grinding head body 6 to rotate at high speed through the meshing of the toothed pulley 9 and the toothed belt 10. The spindle 7 drives the grinding wheel 8 to rotate synchronously through the grinding head 5, so that the upper and lower grinding wheels 8 reach the preset grinding speed. The PLC controller starts the servo motor 12 in the feed assembly. The output end of the servo motor 12 drives the gear 13 to rotate. The gear 13 and the gear on the synchronous shaft rotate... The worm gear 19 on the outside rotates when the worm gear 14 meshes with the helical gear 15 at the end of the ball screw 17, converting the horizontal rotational motion into the axial rotation of the ball screw 17. Since the ball screw 17 is threadedly connected to the connecting block 16 on the grinding head 6, when the ball screw 17 rotates, it pushes the connecting block 16 to drive the grinding head 6 to feed smoothly along the preset trajectory. Finally, the two high-speed rotating grinding wheels 8 move synchronously towards the double end faces of the bearing ring and apply grinding force to complete the precise grinding of the double end faces of the ring. S3: When the grinding wheel 8 wears out, becomes dull, or loses precision after long-term use, the PLC controller can activate the grinding wheel dressing mechanism 18 for self-dressing. The servo motor 3 drives the connecting shaft 182 on the support 181 to rotate through the meshing of the toothed pulley 183 and the toothed belt 184. The connecting shaft 182 drives the dressing arm 185 to rotate synchronously, so that the oilstone 187 fixed on the dressing arm 185 by the clamping block 186 moves to the grinding area of ​​the grinding wheel 8. At this time, the grinding wheel 8 maintains low-speed rotation, and the oilstone 187 contacts the surface of the grinding wheel 8 and achieves full contact through the rotation of the dressing arm 185, grinding and dressing the surface of the grinding wheel 8 to restore the sharpness and precision of the grinding wheel 8. After dressing is completed, the servo motor 3 rotates in reverse to drive the dressing arm 185 to reset, without affecting subsequent grinding operations. The whole process is automatically controlled by the PLC controller to ensure the synchronous improvement of grinding accuracy and efficiency.

[0037] The above provides a detailed description of a double-end face grinder for machining bearing rings provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A double-end face grinder for machining bearing rings, characterized in that, include: The lower column (1) is fixedly provided with a hydraulic cylinder (2) at the top of the lower column (1), and an upper column (3) is fixedly provided on the hydraulic rod of the hydraulic cylinder (2). The lower column (1) and the upper column (3) are provided with a bearing ring double end face grinding mechanism. The bearing ring double-end face grinding mechanism includes a servo motor (4), a grinding head (5), a grinding head body (6), a spindle (7), a grinding wheel (8), a toothed pulley (9), a toothed belt (10), and a feed assembly. The spindle (7) is rotatably mounted on the grinding head body (6). The grinding head (5) is fixedly connected to the spindle (7) by bolts. The grinding wheel (8) is fixedly connected to the grinding head (5) by bolts. The output end of the servo motor (4) and the outer side of the spindle (7) are both fixedly fitted with toothed pulleys (9). The toothed pulleys (9) mesh with the toothed belt (10). The servo motor (4) is fixedly mounted on the grinding head body (6).

2. A double-end face grinder for machining bearing rings according to claim 1, characterized in that, The feed assembly includes a housing (11), a second servo motor (12), a first gear (13), a second gear (14), a helical gear (15), a connecting block (16), a ball screw (17), and a worm gear (19). The second servo motor (12) is fixedly mounted on the housing (11), and the output end of the second servo motor (12) is fixedly connected to the first gear (13). A synchronous shaft is rotatably mounted on the housing (11), and the second gear (14) is fixedly sleeved on the same shaft. On the outside of the step shaft, gear one (13) meshes with gear two (14), worm (19) is fixedly sleeved on the outside of the synchronous shaft, connecting block (16) is fixedly connected to grinding head body (6), ball screw (17) is threadedly connected to connecting block (16), helical gear (15) is fixedly connected to ball screw (17), worm (19) meshes with helical gear (15), and grinding wheel dressing mechanism (18) is provided on the lower column (1).

3. A double-end face grinder for machining bearing rings according to claim 2, characterized in that, The grinding wheel dressing mechanism (18) includes a support (181), a connecting shaft (182), a toothed pulley (183), a toothed belt (184), a dressing arm (185), a clamping block (186), and an oilstone (187). The support (181) is fixedly installed on the lower column (1). A servo motor is fixedly installed on the support (181). The connecting shaft (182) is rotatably installed on the support (181). The toothed pulley (183) is fixedly sleeved on both the output end of the servo motor and the outer side of the connecting shaft (182). The toothed pulley (183) meshes with the toothed belt (184). The dressing arm (185) is fixedly connected to the connecting shaft (182). The clamping block (186) is fixedly connected to the dressing arm (185) by bolts. The oilstone (187) is fixedly installed on the clamping block (186).

4. A double-end face grinder for machining bearing rings according to claim 1, characterized in that, A PLC controller is installed on the rear side of the upper column (3).

5. A double-end face grinder for machining bearing rings according to claim 2, characterized in that, The number of the housings (11) is two, and the two housings (11) are fixedly connected to the lower column (1) and the upper column (3) respectively.

6. A double-end face grinder for machining bearing rings according to claim 1, characterized in that, The bottom of the lower column (1) is fixedly provided with a supporting foot.

7. A double-end face grinder for machining bearing rings according to claim 1, characterized in that, The number of grinding wheels (8) is two, and they are arranged symmetrically on top of each other.

8. A double-end face grinder for machining bearing rings according to claim 1, characterized in that, The lower column (1) is fixedly provided with a guide, and the upper column (3) is slidably sleeved on the outside of the guide.

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