Cylindrical grinding machine with grinding wheel easy to replace

Abstract

The utility model relates to the technical field of cylindrical grinding machines, in particular to a cylindrical grinding machine with a grinding wheel easy to replace, which comprises a machine body, a workbench and a headstock, the workbench is arranged at the upper end of the machine body, the headstock is slidably connected to the upper end of the workbench, a tailstock is slidably connected to the upper end of the workbench, and a grinding wheel grinding mechanism is arranged at the upper end of the workbench. The grinding wheel polishing mechanism comprises a driving mechanism, a differential machine is fixedly connected to the outer side of the driving mechanism, a driving housing is fixedly connected to the outer side of the differential machine, a grinding wheel fixing device is fixedly connected to the outer side of the driving housing, the grinding wheel fixing device comprises a grinding wheel housing, and a driving shaft mechanism is rotationally connected to the inner side of the grinding wheel housing and comprises a main shaft. According to the cylindrical grinding machine, due to the unique structural design of the cylindrical grinding machine, an efficient, safe and easy-to-operate grinding wheel replacement solution is provided for a user, the maintenance and replacement time is greatly shortened, the labor intensity is greatly reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of external cylindrical grinders, in particular to an external cylindrical grinder with an easy-to-replace grinding wheel. Background Art

[0002] Cylindrical grinding machine is a kind of grinding machine used for processing the outer surface of cylindrical workpieces. It is mainly used for grinding the outer cylindrical surface, outer conical surface and end surface of the workpiece. It is widely used in machinery manufacturing, automobile, aviation, precision instrument and other industries. It is particularly suitable for processing workpieces with high requirements for precision and surface finish.

[0003] The external cylindrical grinder fixes the workpiece on the worktable and ensures that the workpiece is aligned with the center of the grinder spindle by adjusting the center height of the grinder, so that the friction between the grinding wheel and the workpiece is used for grinding. During the grinding process, the workpiece is fed longitudinally and circumferentially along the worktable, and the grinding wheel is fed periodically horizontally to control the processing speed and depth to ensure that it meets the quality standards. These movements and adjustments of the external cylindrical grinder work together to achieve high-precision grinding of external cylindrical workpieces. However, in order to ensure the stability of the rotation of the external cylindrical grinder grinding wheel, the external cylindrical grinder grinding wheel is stably placed in the cover of the grinding device for a long time. Since the position of the protective cover outside the grinding wheel is relatively fixed, the process of removing the protective cover and replacing the grinding wheel after the external cylindrical grinder grinding wheel is consumed too much during grinding is relatively cumbersome. Therefore, in response to the above problem, a cylindrical grinder with easy replacement of grinding wheels is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide an external cylindrical grinder with an easy replacement of the grinding wheel, so as to solve the problem that the grinding wheel of the external cylindrical grinder is stably placed in the cover of the grinding device for a long time. Since the position of the protective cover outside the grinding wheel is relatively fixed, the grinding wheel of the external cylindrical grinder is consumed too much during grinding, and the process of removing the protective cover and then replacing the grinding wheel is relatively cumbersome.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A cylindrical grinder with an easy replacement of grinding wheels comprises a bed, a worktable and a headstock, a worktable is placed on the upper end of the bed, a headstock is slidably connected to the upper end of the worktable, a tailstock is slidably connected to the upper end of the worktable, a grinding wheel grinding mechanism is placed on the upper end of the worktable, the grinding wheel grinding mechanism comprises a driving mechanism, a differential is fixedly connected to the outer side of the driving mechanism, a driving cover is fixedly connected to the outer side of the differential, a grinding wheel fixing device is fixedly connected to the outer side of the driving cover, the grinding wheel fixing device comprises a grinding wheel cover, a driving shaft mechanism is rotatably connected to the inner side of the grinding wheel cover, the driving shaft mechanism comprises a main shaft, one side of the main shaft The end is fixedly connected to a limited square shaft, and the limited square shaft is fixedly connected to a threaded shaft at one end away from the main shaft, a nut is spirally connected to the outside of the threaded shaft, and a positioning ring is fixedly connected to the end of the nut close to the main shaft. The outside of the limited square shaft is horizontally slidably connected to the grinding wheel, and the inner side of the grinding wheel fixing device is fixedly connected to a stabilizing mechanism, and the stabilizing mechanism includes a bearing, a limited block is fixedly connected to the inner ring of the bearing, a clamping drum is slidably connected to the outside of the limit block, and an axis pin is fixedly connected to the inside of the grinding wheel cover, and the end of the clamping drum away from the grinding wheel is fixedly connected to a circular plate, and the end of the circular plate close to the grinding wheel is fixedly connected to a telescopic spring.

[0007] As further optimized content of the present invention, the length of the limiting square shaft is the same as the thickness of the grinding wheel, the side section of the limiting square shaft is a square, the diagonal of the side section of the limiting square shaft is the same as the diameter of the main shaft, and the side length of the side section of the limiting square shaft is the same as the diameter of the threaded shaft.

[0008] As a further optimization of this utility model, a hole is opened on the inner side of the threaded shaft, the axis needle slides on the inner side of the threaded shaft, the clamping drum slides on the outer side of the threaded shaft, the clamping drum is tightly attached to the nut near one end of the grinding wheel, and the axis needle and the clamping drum are on the same plane.

[0009] As a further optimization of the present invention, the minimum diameter of the positioning ring is the same as the diagonal length of the side section of the limiting square shaft, the positioning ring is tightly attached to the grinding wheel at one end away from the nut, and the positioning ring is within the side section range of the nut.

[0010] As a further optimization of the present invention, four sliding grooves are evenly opened on the inner side of the clamping drum, the number of the limit blocks is the same as the number of sliding grooves opened on the inner side of the clamping drum, the sliding grooves of the clamping drum are engaged with the limit blocks one by one, and the clamping drum slides in the inner ring of the bearing.

[0011] As a further optimization of the present invention, the telescopic spring is arranged on the outside of the clamping drum, the end of the telescopic spring away from the circular plate is fixedly connected to the inner ring of the bearing, and the telescopic spring has no contact with the outer ring of the bearing.

[0012] As a further optimization of this utility model, the shortest distance from the end of one side of the threaded shaft to the side of the bearing is more than twice the thickness of the grinding wheel, the bearing protrudes from the inner and outer walls of the grinding wheel cover, and the thickness of the nut plus the positioning ring is twice or less than the thickness of the grinding wheel.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] In the utility model, through the setting of the limiting square shaft, threaded shaft, clamping drum and telescopic spring, the invention significantly improves the working efficiency and operational safety of the external cylindrical grinder through the carefully designed grinding wheel fixing and replacement mechanism. The innovative design of the limiting square shaft and threaded shaft ensures the precise positioning of the grinding wheel, and the spiral rotation mechanism of the positioning ring and nut makes the disassembly and installation of the grinding wheel simple and quick. The locking design of the clamping drum and the limiting block, as well as the assistance of the telescopic spring, enhance the stability of the grinding wheel during operation. In addition, the protruding design of the bearing and the optimized distance between the threaded shaft and the bearing further improve the smoothness of the grinding wheel rotation and the durability of the entire mechanism. Overall, the external cylindrical grinder provides users with an efficient, safe and easy-to-operate grinding wheel replacement solution through its unique structural design, greatly reducing maintenance and replacement time and labor intensity, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the grinding wheel fixing device of the utility model;

[0017] Figure 3 This is a schematic diagram of the installation structure of the stabilizing mechanism of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the stabilizing mechanism of the utility model;

[0019] Figure 5 This is a schematic diagram of the bearing structure of the utility model;

[0020] Figure 6 This is a schematic diagram of the drive shaft mechanism structure of the utility model;

[0021] Figure 7 This is a schematic diagram of the nut structure of the utility model.

[0022] In the figure: 1. Bed; 2. Workbench; 3. Headstock; 4. Tailstock;

[0023] 5. Grinding wheel grinding mechanism; 51. Driving mechanism; 52. Differential gear; 53. Driving cover;

[0024] 54. Grinding wheel fixing device; 541. Grinding wheel cover; 542. Drive shaft mechanism; 5421. Spindle; 5422. Positioning square shaft; 5423. Threaded shaft; 5424. Nut; 5425. Positioning ring;

[0025] 543, stabilizing mechanism; 5431, bearing; 5432, limit block; 5433, clamping drum; 5434, pintle; 5435, circular plate; 5436, telescopic spring;

[0026] 544. Grinding wheel. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0029] See also Figure 1-7 , the utility model provides a technical solution:

[0030] A cylindrical grinder with an easy replacement of grinding wheels comprises a bed 1, a worktable 2 and a headstock 3, a worktable 2 is arranged on the upper end of the bed 1, the upper end of the worktable 2 is slidably connected to the headstock 3, the upper end of the worktable 2 is slidably connected to the tailstock 4, a grinding wheel grinding mechanism 5 is arranged on the upper end of the worktable 2, the grinding wheel grinding mechanism 5 comprises a driving mechanism 51, a differential 52 is fixedly connected to the outer side of the driving mechanism 51, a driving cover 53 is fixedly connected to the outer side of the differential 52, a grinding wheel fixing device 54 is fixedly connected to the outer side of the driving cover 53, the grinding wheel fixing device 54 comprises a grinding wheel cover 541, a driving shaft mechanism 542 is rotatably connected to the inner side of the grinding wheel cover 541, the driving shaft mechanism 542 comprises a main shaft 5421, one end of the main shaft 5421 is fixedly connected to a limiting square shaft 5422, and the limiting square shaft 5422 is away from the main shaft One end of the shaft 5421 is fixedly connected to a threaded shaft 5423, and a nut 5424 is spirally connected to the outside of the threaded shaft 5423. The nut 5424 is fixedly connected to the end close to the main shaft 5421 with a positioning ring 5425. The outer side of the limiting square shaft 5422 is horizontally slidably connected to the grinding wheel 544. The inner side of the grinding wheel fixing device 54 is fixedly connected to a stabilizing mechanism 543. The stabilizing mechanism 543 includes a bearing 5431. A limiting block 5432 is fixedly connected to the inner ring of the bearing 5431. The outer side of the limiting block 5432 is slidably connected to a clamping drum 5433. An axis pin 5434 is fixedly connected to the inner side of the grinding wheel cover 541. The end of the clamping drum 5433 away from the grinding wheel 544 is fixedly connected to a circular plate 5435. The end of the circular plate 5435 close to the grinding wheel 544 is fixedly connected to a telescopic spring 5436.

[0031] As a further implementation of this solution, the length of the limiting square shaft 5422 is the same as the thickness of the grinding wheel 544, the side section of the limiting square shaft 5422 is a square, the diagonal of the side section of the limiting square shaft 5422 is the same as the diameter of the main shaft 5421, and the side length of the side section of the limiting square shaft 5422 is the same as the diameter of the threaded shaft 5423. This design ensures a perfect match between the limiting square shaft 5422 and the grinding wheel 544, improves the installation accuracy and concentricity of the grinding wheel 544, and thus enhances the stability and durability of the grinding wheel 544 during high-speed rotation.

[0032] As a further implementation scheme of this scheme, a hole is opened on the inner side of the threaded shaft 5423, the pin 5434 slides on the inner side of the threaded shaft 5423, and the clamping cylinder 5433 slides on the outer side of the threaded shaft 5423. The clamping cylinder 5433 is close to the end of the grinding wheel 544 and is tightly attached to the nut 5424. The pin 5434 and the clamping cylinder 5433 are on the same plane. This design allows the pin 5434 and the clamping cylinder 5433 to move independently in different directions, thereby improving the flexibility of installation and adjustment of the grinding wheel 544, and also ensuring the precise positioning of the grinding wheel 544 during the installation process.

[0033] As a further implementation of this solution, the minimum diameter of the positioning ring 5425 is the same as the diagonal length of the side section of the limiting square shaft 5422. The positioning ring 5425 is tightly attached to the grinding wheel 544 at one end away from the nut 5424, and the positioning ring 5425 is within the side section of the nut 5424. This design enables the positioning ring 5425 to tightly fix the grinding wheel 544, preventing the grinding wheel 544 from offsetting during high-speed rotation, thereby improving the stability and safety of the grinding wheel 544.

[0034] As a further implementation of this solution, four sliding grooves are evenly opened on the inner side of the clamping cylinder 5433, and the number of sliding grooves opened on the inner side of the clamping cylinder 5433 is the same as the number of limiting blocks 5432. The sliding grooves of the clamping cylinder 5433 are engaged with the limiting blocks 5432 one by one, and the clamping cylinder 5433 slides in the inner ring of the bearing 5431. This design enables the clamping cylinder 5433 to slide smoothly in the inner ring of the bearing 5431. At the same time, the precise engagement of the limiting blocks 5432 ensures the stability and accuracy of the clamping cylinder 5433 during the sliding process, thereby improving the reliability of the entire grinding wheel 544 fixing device.

[0035] As a further implementation of this solution, the telescopic spring 5436 is arranged on the outside of the clamping cylinder 5433. The end of the telescopic spring 5436 away from the circular plate 5435 is fixedly connected to the inner ring of the bearing 5431. The telescopic spring 5436 does not have any contact with the outer ring of the bearing 5431. This design allows the telescopic spring 5436 to independently provide support force for the clamping cylinder 5433, avoiding additional friction that may be caused by contact with the outer ring of the bearing 5431, thereby improving the service life of the telescopic spring 5436 and the stability of the entire grinding wheel 544 fixing device.

[0036] As a further implementation of this solution, the shortest distance from the end of one side of the threaded shaft 5423 to the side of the bearing 5431 is more than twice the thickness of the grinding wheel 544, the bearing 5431 protrudes from the inner and outer walls of the grinding wheel cover 541, and the thickness of the nut 5424 plus the positioning ring 5425 is twice or less the thickness of the grinding wheel 544. This design increases the distance between the threaded shaft 5423 and the bearing 5431, reduces the pressure on the threaded shaft 5423 and the bearing 5431 caused by the change in thickness of the grinding wheel 544, and improves the durability and stability of the entire device. At the same time, the protruding design of the bearing 5431 makes the grinding wheel cover 541 more solid, and the thickness of the nut 5424 plus the positioning ring 5425 is controlled at twice or less the thickness of the grinding wheel 544, ensuring the tight fixation and stability of the grinding wheel 544.

[0037] Working process: During use, the equipment is powered by an external power supply. When the grinding wheel 544 of the cylindrical grinder needs to be replaced during use, a wrench or other tool can be directly engaged on the outside of the nut 5424 to control the nut 5424 to drive the fixed positioning ring 5425 to rotate spirally on the outside of the threaded shaft 5423, so that the positioning ring 5425 releases its firm limiting force on the grinding wheel 544 placed on the outside of the limiting square shaft 5422, and at the same time gradually rotates the nut 5424 away from the threaded shaft 5423 to push the clamping drum 5433 that is tightly attached to one end of it. The inner groove slides in the limit block 5432 fixedly connected to the inner side of the bearing 5431, and the nut 5424 can push the clamping drum 5433 to make horizontal linear motion, and the clamping drum 5433 exerts a stretching effect on the telescopic spring 5436 through the circular plate 5435 until the nut 5424 and the positioning ring 5425 are completely separated from the threaded shaft 5423. Before the nut 5424 is separated from the threaded shaft 5423, a continuous force is applied to the circular plate 5435 to keep the telescopic spring 5436 in a certain stretched state. At this time, after the positioning ring 5425 is completely separated from the threaded shaft 5423, the grinding wheel 544 that needs to be replaced can be sequentially moved on the limiting square shaft 542 2 and the outside of the threaded shaft 5423 until the grinding wheel 544 is taken out of the grinding wheel cover 541. Then, a new grinding wheel 544 can be put on the threaded shaft 5423 and aligned with the position of the limiting square shaft 5422. The new grinding wheel 544 is installed on the limiting square shaft 5422, and the nut 5424 and the positioning ring 5425 are reinstalled so that the nut 5424 and the threaded shaft 5423 are spirally connected, and the positioning ring 5425 and the grinding wheel 544 are tightly attached to fix the position of the grinding wheel 544. Finally, the force applied to the circular plate 5435 is released to restore the elastic force of the telescopic spring 5436. Under the restoring force, one end of the clamping drum 5433 is tightly clamped on the outside of the nut 5424, and the pintle 5434 is inserted into the inside of the threaded shaft 5423 to prevent the nut 5424 from being threaded off during the rotation of the grinding wheel 544. Thereafter, when the grinding wheel 544 is working and rotating, the driving mechanism 51 cooperates with the differential 52 and the device inside the driving cover 53, and the main shaft 5421 rotates and controls the limiting square shaft 5422 and the threaded shaft 5423 to rotate in turn. The bearing 5431 can provide stable support for the limiting square shaft 5422 to drive the grinding wheel 544 to rotate, and at the same time, it can ensure the smoothness of the grinding wheel 544 during rotation.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cylindrical grinding machine with an easily replaceable grinding wheel, comprising a bed (1), a workbench (2) and a headstock (3), characterized in that: A workbench (2) is arranged on the upper end of the bed (1), a headstock (3) is slidably connected to the upper end of the workbench (2), a tailstock (4) is slidably connected to the upper end of the workbench (2), and a grinding wheel grinding mechanism (5) is arranged on the upper end of the workbench (2); The grinding wheel grinding mechanism (5) comprises a driving mechanism (51), the outer side of the driving mechanism (51) is fixedly connected to a differential (52), the outer side of the differential (52) is fixedly connected to a driving cover (53), the outer side of the driving cover (53) is fixedly connected to a grinding wheel fixing device (54), the grinding wheel fixing device (54) comprises a grinding wheel cover (541), the inner side of the grinding wheel cover (541) is rotatably connected to a driving shaft mechanism (542), the driving shaft mechanism (542) comprises a main shaft (5421), one end of the main shaft (5421) is fixedly connected to a limiting square shaft (5422), the end of the limiting square shaft (5422) away from the main shaft (5421) is fixedly connected to a threaded shaft (5423), the outer side of the threaded shaft (5423) is spirally connected to a nut (5424), A nut (5424) is fixedly connected to one end of the main shaft (5421) with a positioning ring (5425); a grinding wheel (544) is horizontally slidably connected to the outer side of the limiting square shaft (5422); a stabilizing mechanism (543) is fixedly connected to the inner side of the grinding wheel fixing device (54); the stabilizing mechanism (543) comprises a bearing (5431); a limiting block (5432) is fixedly connected to the inner ring of the bearing (5431); a clamping drum (5433) is slidably connected to the outer side of the limiting block (5432); an axial pin (5434) is fixedly connected to the inner side of the grinding wheel cover (541); an end of the clamping drum (5433) away from the grinding wheel (544) is fixedly connected to a circular plate (5435); and an end of the circular plate (5435) close to the grinding wheel (544) is fixedly connected to a telescopic spring (5436).

2. The cylindrical grinding machine with easily replaceable grinding wheels according to claim 1, characterized in that: The length of the limiting square shaft (5422) is the same as the thickness of the grinding wheel (544), the side section of the limiting square shaft (5422) is square, the diagonal of the side section of the limiting square shaft (5422) is the same as the diameter of the main shaft (5421), and the side length of the side section of the limiting square shaft (5422) is the same as the diameter of the threaded shaft (5423).

3. The cylindrical grinding machine with easily replaceable grinding wheels according to claim 1, characterized in that: A hole is provided on the inner side of the threaded shaft (5423), the axial pin (5434) slides on the inner side of the threaded shaft (5423), the clamping drum (5433) slides on the outer side of the threaded shaft (5423), one end of the clamping drum (5433) close to the grinding wheel (544) is in close contact with the nut (5424), and the axial pin (5434) and the clamping drum (5433) are on the same plane.

4. The cylindrical grinding machine with easily replaceable grinding wheels according to claim 1, characterized in that: The minimum diameter of the positioning ring (5425) is the same as the diagonal length of the side section of the limiting square shaft (5422), and the end of the positioning ring (5425) away from the nut (5424) is in close contact with the grinding wheel (544), and the positioning ring (5425) is within the side section range of the nut (5424).

5. The cylindrical grinding machine with easily replaceable grinding wheels according to claim 1, characterized in that: Four sliding grooves are evenly opened on the inner side of the clamping rotating cylinder (5433), and the number of the sliding grooves opened on the inner side of the clamping rotating cylinder (5433) is the same as the number of the limiting blocks (5432). The sliding grooves of the clamping rotating cylinder (5433) are engaged with the limiting blocks (5432) in a one-to-one correspondence, and the clamping rotating cylinder (5433) slides in the inner ring of the bearing (5431).

6. The cylindrical grinding machine with easily replaceable grinding wheels according to claim 1, characterized in that: The telescopic spring (5436) is arranged on the outside of the clamping drum (5433), and one end of the telescopic spring (5436) away from the circular plate (5435) is fixedly connected to the inner ring of the bearing (5431), and the telescopic spring (5436) does not have any contact with the outer ring of the bearing (5431).

7. The cylindrical grinding machine with easily replaceable grinding wheels according to claim 1, characterized in that: The shortest distance from the end of one side of the threaded shaft (5423) to one side of the bearing (5431) is more than one times the thickness of the grinding wheel (544), the bearing (5431) protrudes from the inner and outer walls of the grinding wheel housing (541), and the thickness of the nut (5424) plus the positioning ring (5425) is one times or less than the thickness of the grinding wheel (544).

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