Grinding machine tool

Abstract

The invention discloses a grinding machine tool, and relates to the field of grinding forming machine tools in the intelligent manufacturing equipment industry. The grinding machine tool comprises a machine tool body, a portal frame, a workbench, a grinding mechanism and a grinding wheel dressing device, the grinding wheel dressing device comprises a base and a shaft seat, the shaft seat comprises a first seat body and a second seat body, and the first seat body is detachably and fixedly connected with the second seat body or the shaft seat; the first section of the rotating shaft is inserted into the first seat body and is rotationally connected with the first seat body, and the second section is inserted into the second seat body and is rotationally connected with the second seat body; the bearing piece and the pressing piece are arranged on the middle section of the rotating shaft, and the bearing piece and the pressing piece can be relatively fixed with the rotating shaft after getting close to or getting away from a target position in the axial direction of the rotating shaft; the finishing roller sleeves the middle section of the rotating shaft and is positioned between the bearing part and the pressing part; and the driving assembly is mounted on the base and can drive the rotating shaft to rotate. According to the invention, the stability of the dressing roller is kept in the dressing process, and the dressing precision of the grinding wheel is improved.

Description

Technical Field

[0001] This application relates to the field of grinding and forming machine tools in the intelligent manufacturing equipment industry, and particularly to a grinding machine tool. Background Art

[0002] A grinding machine tool is a machine tool that uses a grinding wheel to precisely process the surface of a workpiece, mainly used to improve the dimensional accuracy, shape accuracy, and surface finish of the workpiece. During the use of the grinding wheel, the abrasive grains will gradually wear and become dull, resulting in a decline in cutting ability and a reduction in processing efficiency. Therefore, it is necessary to dress the grinding wheel to adjust the contour shape of the grinding wheel and improve the processing accuracy and workpiece yield. Currently, during the dressing process of the grinding wheel, the dressing roller used to grind the grinding wheel is generally installed at the end of the rotating shaft, resulting in frequent deviation of the dressing roller during the dressing process, affecting the dressing accuracy of the grinding wheel; moreover, the process of replacing the dressing roller is cumbersome and time-consuming, requiring the grinding machine tool to stop for a long time, affecting the production efficiency of the grinding machine tool. Summary of the Invention

[0003] The purpose of this application is to provide a grinding machine tool to achieve the stability of the dressing roller during the dressing process of the grinding wheel and improve the dressing accuracy of the grinding wheel.

[0004] To achieve the above purpose, this application provides the following technical solutions:

[0005] A grinding machine tool includes a bed body, a gantry, a workbench, a grinding mechanism, and a grinding wheel dressing device. The grinding wheel dressing device includes:

[0006] A base and a shaft seat. The shaft seat includes a first seat body and a second seat body. The second seat body is fixedly connected to the base, and the first seat body is detachably and fixedly connected to the second seat body or the shaft seat;

[0007] A rotating shaft, which includes a first section, a middle section, and a second section arranged in sequence along its axial direction. The first section is inserted into the first seat body and rotatably connected to the first seat body, and the second section is inserted into the second seat body and rotatably connected to the second seat body;

[0008] A carrier and a pressing member provided on the middle section of the rotating shaft. The carrier and the pressing member are distributed along the axial direction of the rotating shaft, and the carrier and the pressing member can approach or move away from each other along the axial direction of the rotating shaft to a target position and then be relatively fixed to the rotating shaft;

[0009] A dressing roller, sleeved on the middle section of the rotating shaft and located between the carrier and the pressing member;

[0010] A driving component, installed on the base, and the driving component can drive the rotating shaft to rotate.

[0011] In one implementation, the pressing member is in threaded fit with the rotating shaft; and / or, the grinding machine further includes a fastening member capable of relatively fixing the pressing member and the rotating shaft; the fastening member is a shrink fit sleeve, and at least a part of the shrink fit sleeve extends between the pressing member and the rotating shaft.

[0012] In one implementation, the first seat body has an insertion shaft hole that mates with the first section, and the first seat body further includes a first positioning sleeve disposed in the insertion shaft hole, and the first positioning sleeve is in clearance fit with the first section of the rotating shaft; a bearing and / or a rotary seal is disposed between the first positioning sleeve and the inner wall of the insertion shaft hole;

[0013] and / or, the second seat body has an insertion shaft hole that mates with the second section, and a bearing and / or a rotary seal is disposed between the second section of the rotating shaft and the inner wall of the insertion shaft hole.

[0014] In one implementation, the grinding machine further includes a first cooling mechanism, and the first cooling mechanism includes at least one nozzle that sprays coolant towards the dressing roller;

[0015] The number of the nozzles is multiple and they are distributed in at least one row, and each row of nozzles includes a plurality of nozzles arranged at intervals in a direction parallel to the rotating shaft.

[0016] In one implementation, the rotating shaft has a connecting portion that mates with the second seat body, and there is a labyrinth clearance between the connecting portion and the second seat body;

[0017] The labyrinth clearance extends along a tortuous path.

[0018] In one implementation, the second seat body is further provided with an air inlet passage, and the outlet of the air inlet passage communicates with the labyrinth clearance;

[0019] The second seat body is further provided with an air outlet passage, and the inlet of the air outlet passage communicates with the labyrinth clearance; and the outlet of the air inlet passage is farther from the axis of the rotating shaft than the inlet of the air outlet passage.

[0020] In one implementation, the drive assembly includes a motor, a driving wheel, a driven wheel and a transmission belt, and the bottom end of the rotating shaft is coaxially and fixedly connected to the driven wheel.

[0021] In one implementation, the grinding machine further includes a horizontal adjusting member, and the horizontal adjusting member is connected to the base by a plurality of horizontal screw rods. The plurality of horizontal screw rods are arranged in sequence in the horizontal direction and the axes of the plurality of horizontal screw rods are parallel to each other.

[0022] In one implementation, the grinding machine tool further includes a vertical adjusting member. The vertical adjusting member includes a plurality of wedge blocks and an adjusting driving member for driving the wedge blocks to move. The wedge blocks are arranged in sequence and are provided at the bottom of the base.

[0023] In one implementation, the grinding machine tool includes a slide rail, and the grinding wheel dressing device is slidably arranged on the slide rail; and / or, the grinding machine tool includes a workbench and a clamping block for clamping the workbench.

[0024] When dressing the grinding wheel in the grinding machine tool provided by the embodiment of the present application, the driving assembly is used to drive the rotating shaft to rotate, and then the rotating shaft drives the dressing roller to rotate together. The rotation of the dressing roller realizes the grinding and dressing of the grinding wheel. In the present application, the dressing roller is located in the middle section of the rotating shaft, and the first section and the second section of the rotating shaft are respectively rotatably connected to the first seat body and the second seat body. The first seat body and the second seat body limit and support the parts near both ends of the rotating shaft, so that the overall rotation of the rotating shaft is more stable and will not deviate. Furthermore, the process of the rotating shaft driving the dressing roller to rotate is more stable and will not deviate, thereby improving the precision of grinding wheel dressing.

[0025] When the dressing roller on the rotating shaft does not match the model of the grinding wheel to be dressed, it is necessary to replace the dressing roller. Disassemble the first seat body and the second seat body or the shaft seat, then separate the first seat body from the rotating shaft, remove the pressing member from the rotating shaft, and then take out the dressing roller on the rotating shaft. Replace it with a new dressing roller with a matching model and size. Finally, install the pressing member and the first seat body. The operation is simple and time-saving, thereby reducing the downtime of the grinding machine tool and improving the production efficiency of the grinding machine tool. Description of the Drawings

[0026] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0027] Figure 1 is a schematic diagram of the grinding wheel dressing device of the grinding machine tool provided by the embodiment of the present application;

[0028] Figure 2 is a cross-sectional view of the grinding wheel dressing device provided by the embodiment of the present application;

[0029] Figure 3 is Figure 2 an enlarged view of area A in

[0030] Figure 4 is a partial cross-sectional view of the grinding wheel dressing device provided by the embodiment of the present application;

[0031] Figure 5 is Figure 4Enlarged view of the partial cross-section;

[0032] Figure 6 Schematic diagram of a grinding wheel dressing device provided by another embodiment of the present application;

[0033] Figure 7 Cross-sectional view of a grinding wheel dressing device provided by another embodiment of the present application;

[0034] Figure 8 For Figure 7 Enlarged view of a partial area in

[0035] Reference numerals:

[0036] 1 - Second seat body, 2 - First seat body, 3 - First cooling mechanism, 4 - Compression member, 5 - Dressing roller, 6 - Carrier member, 7 - Intake valve, 8 - Exhaust valve, 9 - Base, 10 - Horizontal adjustment member, 11 - Motor, 12 - Second cooling mechanism, 13 - Limit ring, 14 - Wedge block, 15 - Rotating shaft, 16 - Driven wheel, 17 - Driving wheel, 18 - First positioning sleeve, 19 - Axle cover, 20 - Bearing, 21 - Rotary seal ring, 22 - Intake passage, 23 - Labyrinth clearance, 24 - Connecting portion. Detailed implementation manners

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0038] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0039] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined. "Several" means one or more unless otherwise specifically defined.

[0040] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0041] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0042] Please refer to Figure 1 and Figure 2 As shown in the embodiments of the present application, the grinding machine tool includes a bed body, a gantry, a workbench, a grinding mechanism, and a grinding wheel dressing device. The grinding wheel dressing device includes a base 9, a shaft seat, a rotating shaft 15, a carrier 6, a pressing member 4, a dressing roller 5, and a driving assembly. Among them, the base 9 can be fixed on the ground on both sides of the frame of the grinding machine tool, or the base 9 can also be fixed on the frame of the grinding machine tool. The function of the base 9 is to support the shaft seat, the rotating shaft 15, the dressing roller 5, and the driving assembly. The base 9 can be made of metal or any other material. The present application does not specifically limit the material, size, and shape of the base 9, as long as it can play the role of the shaft seat, the rotating shaft 15, the dressing roller 5, and the driving assembly.

[0043] The shaft seat can include a first seat body 2 and a second seat body 1. The second seat body 1 can be fixedly connected to the base 9. Specifically, the second seat body 1 and the base 9 can be connected by threaded parts, welded, clamped, or interference-fitted, etc. The first seat body 2 and the second seat body 1 are detachably fixedly connected, or the first seat body 2 and the base 9 are detachably fixedly connected. Specifically, the first seat body 2 and the second seat body 1 can be connected by threaded parts, clamped, etc. to achieve detachable fixed connection; or, the first seat body 2 and the base 9 can be connected by threaded parts, clamped, etc. to achieve detachable fixed connection.

[0044] The axis of the rotating shaft 15 can be arranged in the vertical direction, as shown in, for example, Figure 1 and Figure 2 ; or the axis of the rotating shaft 15 can also be arranged in the horizontal direction, as shown in, for example, Figure 6 and Figure 7As shown. When the axis of the rotating shaft 15 is arranged vertically, the first seat body 2 and the second seat body 1 can be arranged in sequence vertically; when the axis of the rotating shaft 15 is arranged horizontally, the first seat body 2 and the second seat body 1 can be arranged in sequence horizontally. The rotating shaft 15 includes a first section, a middle section, and a second section arranged in sequence along its axial direction. The first section is inserted into the first seat body 2 and is rotatably connected to the first seat body 2, and the second section is inserted into the second seat body 1 and is rotatably connected to the second seat body 1. In this way, the two ends of the rotating shaft 15 are rotatably connected to the first seat body 2 and the second seat body 1 respectively.

[0045] The bearing member 6 and the pressing member 4 are arranged on the middle section of the rotating shaft 15, and the bearing member 6 and the pressing member 4 are distributed along the axial direction of the rotating shaft 15. The bearing member 6 and the pressing member 4 can approach or move away from each other along the axial direction of the rotating shaft 15. Specifically, only the pressing member 4 can move along the axial direction of the rotating shaft 15 to realize the approach or separation of the bearing member 6 and the pressing member 4; or only the bearing member 6 can move along the axial direction of the rotating shaft 15 to realize the approach or separation of the bearing member 6 and the pressing member 4; or both the pressing member 4 and the bearing member 6 can move along the axial direction of the rotating shaft 15 to realize the approach or separation of the bearing member 6 and the pressing member 4. After the bearing member 6 and the pressing member 4 move along the axial direction of the rotating shaft 15 to the target position, they are relatively fixed to the rotating shaft 15.

[0046] The dressing roller 5 is sleeved on the middle section of the rotating shaft 15, and the dressing roller 5 is located between the bearing member 6 and the pressing member 4. In this way, when the pressing member 4 and the bearing member 6 approach each other along the axial direction of the rotating shaft 15, the pressing member 4 and the bearing member 6 can press the dressing roller 5 at both ends of the dressing roller 5 respectively. At this time, the target position refers to the two ends of the dressing roller 5 where the pressing member 4 and the bearing member 6 press. Or, gaskets sleeved on the rotating shaft 15 are further provided at both ends of the dressing roller 5. After the pressing member 4 and the bearing member 6 press the gaskets at both ends of the dressing roller 5, the dressing roller 5 is pressed through the gaskets. At this time, the target position refers to the gaskets at both ends of the dressing roller 5 where the pressing member 4 and the bearing member 6 press. After the bearing member 6 and the pressing member 4 move along the axial direction of the rotating shaft 15 to the target position, both the bearing member 6 and the pressing member 4 are relatively fixed to the rotating shaft 15 to relatively fix the dressing roller 5 to the rotating shaft 15. When the rotating shaft 15 rotates, the dressing roller 5 is driven to rotate together.

[0047] Specifically, the dressing roller 5 can be a diamond roller. Diamond has the advantages of high hardness, good wear resistance, good thermal conductivity, and chemical stability, and is suitable for dressing grinding wheels.

[0048] The drive assembly is installed on the base 9, and the main function of the drive assembly is to drive the rotating shaft 15 to rotate.

[0049] When dressing the grinding wheel of the grinding machine provided by the embodiment of the present application, the driving assembly is used to drive the rotation of the rotating shaft 15. Further, the rotating shaft 15 drives the dressing roller 5 to rotate together, and the rotation of the dressing roller 5 realizes the grinding and dressing of the grinding wheel. In the present application, the dressing roller 5 is located in the middle section of the rotating shaft 15, and the first section and the second section of the rotating shaft 15 are respectively rotatably connected to the first seat body 2 and the second seat body 1. The first seat body 2 and the second seat body 1 limit and support the parts near both ends of the rotating shaft 15, so that the overall rotation of the rotating shaft 15 is more stable and will not shift. Furthermore, the process of the rotating shaft 15 driving the dressing roller 5 to rotate is more stable and will not shift, thereby improving the precision of the grinding wheel dressing.

[0050] When the dressing roller 5 on the rotating shaft 15 does not match the model of the grinding wheel to be dressed, it is necessary to replace the dressing roller 5. Disassemble the first seat body 2 and the second seat body 1 or the shaft seat, then separate the first seat body 2 from the rotating shaft 15, detach the pressing member 4 from the rotating shaft 15, and then take out the dressing roller 5 on the rotating shaft 15. Replace it with a new dressing roller 5 with a matching model and size. Finally, install the pressing member 4 and the first seat body 2. The operation is simple and time-saving, thereby reducing the downtime of the grinding machine and improving the production efficiency of the grinding machine.

[0051] In some embodiments, the pressing member 4 and the rotating shaft 15 can be in threaded cooperation, that is, the pressing member 4 has an internal thread, and a part of the rotating shaft 15 has an external thread that cooperates with the pressing member 4. While the pressing member 4 rotates, it realizes axial movement along the rotating shaft 15. The operation is simple and it is convenient for processing and manufacturing.

[0052] In order to prevent the pressing member 4 from moving axially along the rotating shaft 15 during the process of grinding and dressing the grinding wheel, the grinding wheel dressing device of the grinding machine further includes a fastening member, and the fastening member can relatively fix the pressing member 4 and the rotating shaft 15. Specifically, the fastening member can be a shrink fit sleeve. At least a part of the shrink fit sleeve extends between the pressing member 4 and the rotating shaft 15. Thus, when it is necessary to relatively fix the pressing member 4 and the rotating shaft 15, an interference fit is achieved among the pressing member 4, the shrink fit sleeve and the rotating shaft 15 through the movement of the shrink fit sleeve, and further, when the rotating shaft 15 rotates, it drives the pressing member 4 to rotate together. When it is necessary for the pressing member 4 to move axially along the rotating shaft 15, the shrink fit sleeve moves to loosen the pressing member 4. Specifically, along the axial direction of the rotating shaft 15, the thickness of the shrink fit sleeve gradually decreases. The end with the smallest thickness of the shrink fit sleeve extends between the pressing member 4 and the rotating shaft 15, and the other end of the shrink fit sleeve is threadedly connected to the pressing member 4 through a screw. The process of rotating the bolt can adjust the position of the shrink fit sleeve extending between the pressing member 4 and the rotating shaft 15. The more the part of the shrink fit sleeve extending between the pressing member 4 and the rotating shaft 15, the closer the pressing member 4, the shrink fit sleeve and the rotating shaft 15 are, and finally an interference fit is achieved. When the shrink fit sleeve moves outward between the pressing member 4 and the rotating shaft 15, the gap among the pressing member 4, the shrink fit sleeve and the rotating shaft 15 becomes larger, and at this time, the pressing member 4 can move axially along the rotating shaft 15.

[0053] Of course, the fastener may also be a pin, which is inserted into the positioning groove of the rotating shaft 15 to achieve relative fixation of the pressing member 4 and the rotating shaft 15 .

[0054] In some embodiments, one of the bearing member 6 and the pressing member 4 can be fixedly connected to the rotating shaft 15, and the other of the bearing member 6 and the pressing member 4 can move along the axial direction of the rotating shaft 15. When the bearing member 6 can move along the axial direction of the rotating shaft 15, the bearing member 6 can also be threadedly matched with the rotating shaft 15, and a tension sleeve can also be provided between the bearing member 6 and the rotating shaft 15. For details, please refer to the above description of the tension sleeve, which will not be repeated here.

[0055] Preferably, the bearing member 6 is fixedly connected to the rotating shaft 15, so that a sealing design can be provided between the bearing member 6 and the rotating shaft 15 to improve the waterproof performance. The bearing member 6 can be specifically a bearing plate.

[0056] In some embodiments, Figure 2 and Figure 3 As shown, the first seat body 2 has a shaft insertion hole matched with the first section, and the first seat body 2 also includes a first positioning sleeve 18 arranged in the shaft insertion hole, and the first positioning sleeve 18 is in clearance match with the first section of the rotating shaft 15; a bearing 20 and / or a rotating sealing ring 21 are arranged between the first positioning sleeve 18 and the inner wall of the shaft insertion hole. In this way, the shaft insertion hole and the first positioning sleeve 18 realize the limiting effect on the first section of the rotating shaft 15, and the first positioning sleeve 18 is in clearance match with the first section of the rotating shaft 15, which reduces the friction force of the rotating shaft 15; the key point is that when replacing the dressing roller 5, it is convenient to pull the first seat body 2 out of the rotating shaft 15 as a whole, which is simple to operate and helps to save time for replacing the dressing roller 5, thereby reducing the downtime of the grinding machine.

[0057] Among them, a rotating sealing ring 21 can be arranged between the bottom of the first positioning sleeve 18 and the inner wall of the shaft insertion hole to prevent dust, liquid, etc. from entering the first seat body 2 and affecting the service life of the grinding machine. A bearing 20 can be arranged between the middle part of the first positioning sleeve 18 and the inner wall of the shaft insertion hole to reduce friction. The first seat body 2 also includes components such as a limiting ring 13 for limiting the bearing 20 to prevent the position of the bearing 20 from shifting; and / or a local protrusion of the first positioning sleeve 18, so as to facilitate the protrusion to limit the bearing 20 and / or the rotating sealing ring 21.

[0058] In some embodiments, Figure 3 As shown, the end of the rotating shaft 15 can also be connected with a shaft cover 19 by bolts. There is a gap between the end of the rotating shaft 15 or the shaft cover 19 and the inner wall of the shaft insertion hole of the first seat body 2 to further reduce friction.

[0059] In some embodiments, Figure 7 and Figure 8As shown, the second body 1 has a shaft insertion hole that mates with the second section. A bearing 20 and / or a rotary seal ring 21 are provided between the second section of the rotary shaft 15 and the inner wall of the shaft insertion hole. Since only the first body 2 needs to be disassembled when replacing and trimming the roller 5, without having to disassemble the second body 1, the inner wall of the shaft insertion hole of the second body 1 and the second section of the rotary shaft 15 can be directly rotationally connected through the bearing 20 and / or the rotary seal ring 21. In this way, the limiting effect on the second section of the rotary shaft 15 is better, and it can further prevent the rotary shaft 15 from shifting or skewing during rotation. A limiting ring 13 can be provided inside the second body 1 to position the bearing 20 through the limiting ring 13.

[0060] Of course, a second positioning sleeve can also be provided inside the shaft insertion hole of the second body 1. The second section of the rotary shaft 15 has a clearance fit with the second positioning sleeve, and the second positioning sleeve is rotationally connected to the inner wall of the shaft insertion hole of the second body 1 through the bearing 20 and / or the rotary seal ring 21.

[0061] During the process of trimming the grinding wheel, as Figure 1 and Figure 2 shown, the trimming roller 5 continuously rubs against the grinding wheel, resulting in a relatively high temperature and generating a large amount of dust. Therefore, the grinding machine further includes a first cooling mechanism 3. The first cooling mechanism 3 includes at least one nozzle that sprays coolant towards the trimming roller 5. In this way, the nozzle is used to spray coolant towards the trimming roller 5 to achieve the purpose of cooling down and reducing dust. The coolant can specifically be cooling water or other liquids.

[0062] To further improve the cooling effect, the number of nozzles can be multiple and distributed in at least one row. Each row of nozzles includes a plurality of nozzles arranged at intervals in a direction parallel to the rotary shaft 15. With this setting, multiple nozzles simultaneously spray coolant towards different positions of the trimming roller 5 to quickly cool down and reduce dust.

[0063] As Figures 4-5 and Figures 7-8 shown, the rotary shaft 15 has a connection portion 24 that mates with the second body 1, and there is a labyrinth clearance 23 between the connection portion 24 and the second body 1. It should be noted that when the carrier 6 is fixedly connected to the rotary shaft 15, the carrier 6 and the rotary shaft 15 can be an integral structure. At this time, the connection portion 24 can be the carrier 6. For example, Figures 4-5 shown, that is, while the carrier 6 supports the trimming roller 5, there is also a labyrinth clearance 23 between the carrier 6 and the second body 1. Or, the connection portion 24 and the carrier 6 are two components. The connection portion 24 and the main body of the rotary shaft 15 can be an integral structure or fixedly connected after being processed separately. For example, Figures 7-8 shown, the connection portion 24 and the second body 1 do not contact and there is a labyrinth clearance 23. By adopting this technical solution, the friction between the connection portion 24 of the rotary shaft 15 and the second body 1 can be reduced.

[0064] The labyrinth clearance 23 can prevent dust or coolant from entering the interior of the second body 1 along the labyrinth clearance 23. The labyrinth clearance 23 can extend along a tortuous path, that is, the labyrinth clearance 23 extends non-linearly. As Figure 5 and Figure 8 shown, the labyrinth clearance 23 is at least partially bent to increase the resistance of dust or coolant flowing in the labyrinth clearance 23, thereby preventing dust or coolant from entering the interior of the second body 1 through the labyrinth clearance 23.

[0065] In some embodiments, the second body 1 of the grinding wheel dressing device of the grinding machine is further provided with an air inlet channel 22. The outlet of the air inlet channel 22 communicates with the labyrinth clearance 23 between the bearing plate and the second body 1. The inlet of the air inlet channel 22 is arranged on the outer wall of the second body 1 and is provided with an air inlet valve 7. In this way, gas is blown into the labyrinth clearance 23 between the connecting portion 24 and the second body 1 through the air inlet channel 22, so that the dust and coolant in the labyrinth clearance 23 can be blown out.

[0066] The second body 1 is further provided with an air outlet channel. The inlet of the air outlet channel communicates with the labyrinth clearance 23 between the bearing plate and the second body 1. The outlet of the air outlet channel is arranged on the outer wall of the second body 1 and is provided with an air outlet valve 8. In this way, the gas in the labyrinth clearance 23 can be discharged through the air outlet channel, and the dust and coolant in the labyrinth clearance 23 can also be carried away.

[0067] Among them, the outlet of the air inlet channel 22 is farther from the axis of the rotating shaft 15 than the inlet of the air outlet channel. In this technical solution, it can prevent the gas entering from the air inlet channel 22 from driving the dust and coolant in the labyrinth clearance 23 into the interior of the second body 1. The gas flowing towards the axis of the rotating shaft 15 can enter the air outlet channel and be discharged from the outlet of the air outlet channel, further reducing the residual dust and coolant in the labyrinth clearance 23.

[0068] In some embodiments, as Figure 2 shown, the drive assembly includes a motor 11, a driving wheel 17, a driven wheel 16 and a transmission belt. The bottom end of the rotating shaft 15 is coaxially and fixedly connected to the driven wheel 16. Specifically, the motor 11 drives the driving wheel 17 to rotate, and then the driving wheel 17 drives the transmission belt and the driven wheel 16 to rotate. The driven wheel 16 drives the rotating shaft 15 to rotate, so as to realize the rotating shaft 15 driving the dressing roller 5 to rotate and grind the grinding wheel. Among them, the bottom end of the rotating shaft 15 is fixed to the driven wheel 16 to facilitate the driven wheel 16 to support the bottom end of the rotating shaft 15. The driving wheel 17 and the driven wheel 16 are arranged on the base 9 for rotation.

[0069] To cool down the motor 11, the wheel dressing device of the grinding machine tool further includes a second cooling mechanism 12, which can spray coolant onto the motor 11 to timely reduce the temperature of the motor 11 and ensure the normal working performance of the motor 11.

[0070] In some embodiments, the wheel dressing device of the grinding machine tool further includes a horizontal adjusting member 10, which is connected to the base 9 through a plurality of horizontal screws. The plurality of horizontal screws are arranged in sequence in the horizontal direction and the axes of the plurality of horizontal screws are parallel to each other. Specifically, the horizontal adjusting member 10 can be a strip-shaped plate, which is horizontally placed. A plurality of horizontal screws are sequentially arranged along the length direction of the strip-shaped plate. The horizontal screws pass through the strip-shaped plate and are threadedly connected to the base 9. By rotating the horizontal screws, the horizontal distance between different positions of the base 9 and the strip-shaped plate can be adjusted, thereby adjusting the horizontal angle of the base 9 and the entire wheel dressing device, and further improving the accuracy of wheel dressing.

[0071] In some embodiments, the wheel dressing device of the grinding machine tool further includes a vertical adjusting member, which includes a plurality of wedge blocks 14 and an adjusting driving member for driving the movement of the wedge blocks 14. The wedge blocks 14 are arranged in sequence and are provided at the bottom of the base 9. The heights of the top surfaces of the wedge blocks 14 are different. By adjusting the telescopic movement of the adjusting driving member, the positions of the wedge blocks 14 are adjusted, and different positions of the wedge blocks 14 are brought into contact with the bottom of the base 9, so as to realize the adjustment of the height of the base 9. In this way, by adjusting the positions of the plurality of wedge blocks 14 through the adjusting driving member, the height of the entire base 9 can be adjusted, or when different positions of the plurality of wedge blocks 14 support the base 9, the vertical inclination of the entire base 9 can be adjusted to make the position of the dressing roller 5 more matched with the wheel to be dressed. Among them, the adjusting driving member can be a telescopic cylinder, a screw mechanism or a screw.

[0072] To facilitate the movement of the wheel dressing device, the grinding machine tool can include a slide rail. Specifically, a slide rail is provided on the machine base of the grinding machine tool, and the wheel dressing device is slidably arranged on the slide rail. In this way, when the wheel needs to be dressed, the wheel dressing device can be slid along the slide rail to the vicinity of the wheel, avoiding manual handling; after the wheel dressing is completed, the wheel dressing device can be slid along the slide rail to a position away from the wheel.

[0073] In some embodiments, the grinding machine tool includes a workbench, which is used to support and place the workpiece to be processed. During the process of dressing the wheel, a clamping block for clamping the workbench of the grinding machine tool can be provided to reduce the vibration of the workbench during the process of dressing the wheel.

[0074] In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0075] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims described above.

Claims

1. A grinding machine tool, characterized in that: It includes a bed, a gantry, a workbench, a grinding mechanism and a grinding wheel dressing device, and the grinding wheel dressing device includes: A base and an axle seat, wherein the axle seat comprises a first seat body and a second seat body, wherein the second seat body is fixedly connected to the base, and the first seat body is detachably fixedly connected to the second seat body or the axle seat; A rotating shaft, the rotating shaft comprising a first section, a middle section, and a second section arranged in sequence along its axial direction, the first section being inserted into the first seat body and rotatably connected to the first seat body, and the second section being inserted into the second seat body and rotatably connected to the second seat body; A bearing member and a pressing member are arranged on the middle section of the rotating shaft, the bearing member and the pressing member are distributed along the axial direction of the rotating shaft, and the bearing member and the pressing member can move closer to or farther from each other along the axial direction of the rotating shaft to a target position and then be fixed relatively to the rotating shaft; A trimming roller, sleeved on the middle section of the rotating shaft and located between the bearing member and the pressing member; A driving assembly is installed on the base, and the driving assembly can drive the rotating shaft to rotate.

2. The grinding machine according to claim 1, characterized in that: The clamping member is threadedly engaged with the rotating shaft; and / or the grinding machine further comprises a fastener, which can fix the clamping member and the rotating shaft relative to each other; the fastener is a tension sleeve, and at least a portion of the tension sleeve extends between the clamping member and the rotating shaft.

3. The grinding machine according to claim 1, characterized in that: The first seat body has a shaft insertion hole matched with the first section, and the first seat body also includes a first positioning sleeve arranged in the shaft insertion hole, and the first positioning sleeve is in clearance match with the first section of the rotating shaft; a bearing and / or a rotating sealing ring is arranged between the first positioning sleeve and the inner wall of the shaft insertion hole; And / or, the second seat body has a shaft insertion hole matched with the second section, and a bearing and / or a rotating sealing ring is arranged between the second section of the rotating shaft and the inner wall of the shaft insertion hole.

4. The grinding machine tool according to claim 1, characterized in that: The grinding machine also includes a first cooling mechanism, which includes at least one nozzle for spraying a coolant toward the dressing roller; The number of the nozzles is multiple and they are distributed in at least one row, and each row of nozzles includes multiple nozzles that are sequentially arranged at intervals along a direction parallel to the rotation axis.

5. The grinding machine tool according to claim 1, characterized in that: The rotating shaft has a connecting portion matched with the second seat body, and a labyrinth gap is formed between the connecting portion and the second seat body; The labyrinth gap extends along a tortuous path.

6. The grinding machine tool according to claim 5, characterized in that: The second seat body is also provided with an air inlet passage, the outlet of which is communicated with the labyrinth gap; The second seat body is further provided with an air outlet channel, the inlet of which is communicated with the labyrinth gap; and the outlet of the air inlet channel is farther away from the axis of the rotating shaft than the inlet of the air outlet channel.

7. The grinding machine according to claim 1, characterized in that: The driving assembly comprises a motor, a driving wheel, a driven wheel and a transmission belt, and the bottom end of the rotating shaft is coaxially fixedly connected with the driven wheel.

8. The grinding machine according to claim 1, characterized in that: The grinding machine also includes a horizontal adjustment member, which is connected to the base via a plurality of horizontal screws, the plurality of horizontal screws are arranged in sequence along a horizontal direction, and the axes of the plurality of horizontal screws are parallel to each other.

9. The grinding machine tool according to claim 1, characterized in that: The grinding machine also includes a vertical adjustment member, which includes a plurality of wedge blocks and an adjustment driving member for driving the wedge blocks to move. The wedge blocks are arranged in sequence and are disposed at the bottom of the base.

10. The grinding machine according to any one of claims 1 to 9, characterized in that: The grinding machine also includes a slide rail, and the grinding wheel dressing device is slidably arranged on the slide rail; and / or the grinding machine includes a workbench and a clamping block clamping the workbench.

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