Grinding wheel transmission mechanism for water grinding diamond machine

Abstract

The utility model relates to a transmission mechanism, in particular to a grinding wheel transmission mechanism for a water grinding diamond machine. A grinding wheel transmission mechanism for a water grinding diamond machine comprises a driving transmission wheel used for being in linkage with a grinding wheel, the driving transmission wheel is fixed to a fixing base, the fixing base is used for being fixed to a fixing part, the fixing base is provided with a fixing part extending in the axial direction, the section of the fixing part is annular, and a containing cavity is formed in the fixing part. The driving transmission wheel is sleeved and rotatably fixed outside the fixing part, one end of the transmission shaft is rotatably fixed in the containing cavity, the other end of the transmission shaft is provided with an elastic coupling used for being connected with an output shaft of a driving motor, and the transmission shaft is connected with a first ring part extending towards the outer side in the circumferential direction; the driving transmission wheel is connected with a second ring part extending towards the inner side in the circumferential direction, and the first ring part and the second ring part are fixed. The utility model has the advantages that the grinding and polishing precision can be ensured, and the service life can be prolonged.

Description

Technical Field

[0001] This utility model relates to a transmission mechanism, specifically a grinding wheel transmission mechanism for a water-grinding diamond machine. Background Technology

[0002] For example, water-polishing diamond machines with publication numbers CN2834780Y, CN105033811A, and CN115026695A all include a grinding wheel / grinding wheel shaft. The grinding wheel / grinding wheel shaft is fixed to the machine frame through a bearing seat. A driven transmission wheel is fixed on the grinding wheel / grinding wheel shaft. The driven transmission wheel is powered by a drive motor and a belt, thereby driving the grinding wheel / grinding wheel shaft to rotate, so as to polish the diamond.

[0003] Because water-polished diamond machines have a complex structure and do not require constant polishing, the drive motor and belt that power the grinding wheel / shaft can be disassembled and installed according to actual use. However, this will cause the active drive wheel on the output end of the drive motor and the driven drive wheel on the grinding wheel / shaft to be out of plane, resulting in the belt being tilted relative to the axes of the two drive wheels.

[0004] When the belt drives the driven pulley, due to the tilt, the driving force on the grinding wheel / grinding wheel shaft will generate a component force in the radial direction (the direction perpendicular to the center line of the grinding wheel shaft). These components force will cause the grinding wheel / grinding wheel shaft to rotate unevenly during the rotation center, which will easily cause deviation and sway, resulting in a decrease in grinding and polishing accuracy. At the same time, it will also lead to increased wear and shortened service life of the grinding wheel / grinding wheel shaft and belt. Utility Model Content

[0005] The purpose of this invention is to provide a grinding wheel transmission mechanism for a water-cooled diamond grinding machine that can guarantee the grinding and polishing accuracy of the grinding wheel / grinding wheel shaft and extend the service life of the grinding wheel / grinding wheel shaft and belt.

[0006] To achieve the above objectives, this utility model employs a grinding wheel transmission mechanism for a water-jetting diamond machine, including an active transmission wheel for linkage with the grinding wheel. The active transmission wheel is fixed to a fixed base, which is used to fix a fixed part. The fixed base has a fixed part extending axially, and the fixed part has an annular cross-section forming a receiving cavity. The active transmission wheel is sleeved and rotatably fixed outside the fixed part. One end of a transmission shaft is rotatably fixed in the receiving cavity, and the other end of the transmission shaft is provided with an elastic coupling for connection to the output end of a drive motor. The transmission shaft is connected to a first ring extending outward in a circumferential direction, which is offset from the receiving cavity. The active transmission wheel is connected to a second ring extending inward in a circumferential direction, and the first ring and the second ring are fixed together.

[0007] This invention ensures stable power transmission from the drive motor to the grinding wheel through a fixed connection between the drive wheel and the fixed base, and a reliable connection between the drive shaft and the output end of the drive motor (especially the flexible coupling). Even under long-term operation or changing working conditions, it avoids power transmission interruption or instability caused by loosening or slippage of connecting parts, ensuring continuous and stable rotation of the grinding wheel, providing reliable driving force for diamond grinding and polishing operations, and guaranteeing the grinding and polishing accuracy of the grinding wheel. The flexible coupling can adapt to a certain degree of axial and radial deviation, maintaining good transmission performance even with slight changes in the installation position of the drive motor or uneven force on the grinding wheel, ensuring normal rotation of the grinding wheel and smooth grinding and polishing operations. The flexible coupling can also buffer the torque impact between the output end of the drive motor and the drive shaft to a certain extent, reducing stress concentration on the drive shaft and the drive wheel, thereby improving the service life of the entire transmission mechanism.

[0008] The fixed base design provides a stable foundation for the entire transmission mechanism. Its fixation to fixed locations (ground, wall, machine support, etc.) is simple and reliable, facilitating quick and accurate installation of the entire transmission mechanism onto the water-jet grinding machine. Simultaneously, one end of the drive shaft is located within the receiving cavity, while the other end is connected to the output of the drive motor via a flexible coupling. This structure allows for easy alignment adjustments during installation, ensuring a good fit between the driving and driven wheels (grinding wheel side), improving installation accuracy and efficiency. This design also facilitates quick disassembly when maintenance, repair, or component replacement is required. The flexible coupling allows for detachable fixation to the drive shaft, making separation of the drive shaft from the drive motor output easier. Furthermore, the connection method between the fixed base and components such as the driving wheel facilitates disassembly and reassembly, reducing maintenance difficulty and cost.

[0009] Preferably, the drive shaft has a positioning part extending axially and having a non-circular cross-section at one end outside the receiving cavity. The positioning part has a fixing hole that extends radially through it. The flexible coupling includes a first linkage sleeve for connecting with the positioning part and a second linkage sleeve for connecting with the output end. The first linkage sleeve fits into the fixing hole and its end extends out of the fixing hole. The end of the first linkage sleeve that extends at least out of the fixing hole has an elastic sleeve body. The second linkage sleeve has a linkage groove that matches the outer edge of the positioning part and the shape of the end of the first linkage sleeve.

[0010] The design of the positioning part and fixing hole, combined with the structure of the flexible coupling, enables a stable connection between the drive shaft and the output end of the drive motor. Through the non-circular cross-section positioning part and the flexible sleeve, relative rotation between the drive shaft and the output end of the drive motor is effectively prevented, ensuring stable and accurate power transmission. This avoids problems such as uneven rotation of the grinding wheel / grinding wheel shaft caused by relative rotation at the connection point, thereby improving grinding and polishing accuracy. Simultaneously, it reduces wear on the drive shaft and the output end of the drive motor due to unstable connection, extending their service life.

[0011] Preferably, the first linkage sleeve includes the elastic sleeve body located on the outer side and the reinforcing post located on the inner side.

[0012] The above configuration ensures the overall elasticity of the first linkage sleeve while providing sufficient strength and support internally through reinforcing columns. During connection, the elastic sleeve can accommodate certain axial and radial deviations, mitigating potential issues such as misalignment during installation. This further ensures a good connection between the drive shaft and the output end of the drive motor, reduces stress concentration, lowers the risk of damage at the connection point, and improves the reliability of the entire transmission system.

[0013] Preferably, the reinforcing post and the elastic sleeve are detachably fixed, the second linkage sleeve has a radially penetrating linkage hole for engaging with the elastic sleeve, one end of the reinforcing post has a limiting part that extends outward in a circumferential direction and has a width greater than the diameter of the linkage hole, and the other end of the reinforcing post is threaded with a threaded part.

[0014] The detachable fixing of the reinforcing column and the elastic sleeve, as well as the engagement of the linkage hole, the limiting part, and the threaded parts on the second linkage sleeve, make the installation and disassembly of the elastic coupling more convenient and quick. This facilitates operation when it is necessary to maintain, replace, or adjust the transmission system, and also makes it easier to replace the elastic coupling itself. This ensures that it can play a stable role in connection and buffering for a long time, and will not affect the transmission effect due to factors such as elastic fatigue after long-term use.

[0015] Preferably, the outer circumferential wall of the fixing part is formed with an annular groove, the annular groove penetrates the axial surface of the fixing part near the second ring, and a first bearing is fitted at the annular groove, and the drive drive wheel is rotatably fixed on the fixing seat through the first bearing.

[0016] The design of the annular groove allows the drive wheel to rotate flexibly and be fixed on the fixed seat via the first bearing, ensuring the smooth rotation of the drive wheel; at the same time, it can make the distance between the inner edge of the drive wheel and the outer edge of the drive shaft as close as possible, reducing the sway amplitude when the drive shaft drives the drive wheel to rotate.

[0017] This reduces heat and wear caused by friction, thereby improving the rotational accuracy and stability of the grinding wheel / shaft, extending the service life of the drive wheel and bearings, and ensuring the smooth progress of the grinding and polishing process.

[0018] Preferably, the first ring portion and the second ring portion are fixed by fasteners, and the drive shaft and the first ring portion are engaged by a spline structure. The outer circumferential wall of the drive shaft and the inner circumferential wall of the first ring portion are provided with mutually engaging spline grooves and spline protrusions. The spline grooves penetrate the drive shaft or the first ring portion axially.

[0019] The splined structure between the drive shaft and the first ring facilitates assembly while transmitting torque, ensuring efficient power transmission. The axially continuous spline design makes installation and disassembly of the drive shaft and the first ring easier, facilitating replacement or repair of either component and improving the maintainability of the entire transmission mechanism. The first ring can be assembled with the drive shaft after the bearings on the mounting base are press-fitted, followed by rotation of the drive shaft to align the threaded holes on the first and second rings.

[0020] Preferably, the spline groove on the drive shaft extends through opposite sides of the drive shaft. This reduces the contact area between the drive shaft and the bearing, facilitating the press-fitting of the drive shaft.

[0021] Preferably, the fixing seat includes a plate portion and a fixing portion fixed to the plate portion. The fixing portion is fixed to the plate portion by fasteners. The plate portion is fixed to the fixing portion, and the outer edge of the plate portion extends to the outer edge of the drive wheel.

[0022] The larger plate allows for better and more stable mounting on various fixed parts such as machine supports; at the same time, the outer edge of the plate is located on the outer side of the drive wheel, making it easy to install a protective cover on the drive wheel.

[0023] This invention has the advantages of ensuring the grinding and polishing accuracy of the grinding wheel / grinding wheel shaft and extending the service life of the grinding wheel / grinding wheel shaft and belt. Attached Figure Description

[0024] Figure 1 This is a cross-sectional view of the present invention.

[0025] Figure 2 This is an exploded view of the present invention.

[0026] Figure 3 for Figure 1 A schematic diagram of a drive shaft and flexible coupling in a machine. Detailed Implementation

[0027] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0028] Depend on Figures 1 to 3 As shown, this embodiment discloses a grinding wheel transmission mechanism for a water-polished diamond machine, including an active transmission wheel 1 for linkage with the grinding wheel. The active transmission wheel 1 is fixed to a fixed base 2. The fixed base 2 includes a plate portion 21 and a fixing portion 22 fixed to the plate portion 21 by fasteners. The active transmission wheel 1 is sleeved and rotatably fixed outside the fixing portion 22. The plate portion 21 is used to fix to a fixed part such as a machine bracket, wall or ground, and the outer edge of the plate portion 21 is located on the outer side of the active transmission wheel 1.

[0029] The fixed part 22 has an annular cross-section and forms a receiving cavity that accommodates one end of the drive shaft 3. One end of the drive shaft 3 is rotatably fixed in the receiving cavity, and the other end of the drive shaft 3 is provided with a flexible coupling for connecting to the output end of the drive motor. The drive shaft 3 is connected to a first ring part 4 extending outward in a circumferential direction. The first ring part 4 is offset from the receiving cavity. The drive wheel 1 is provided with a second ring part 11 extending inward in a circumferential direction. The first ring part 4 and the second ring part 11 are fixed by fasteners. The second ring part 11 can be located at the end of the drive wheel 1 or offset from the end of the drive wheel 1.

[0030] The fixing part 22 has an annular groove formed on its outer circumferential wall, which penetrates the axial surface of the fixing part 22 near the second ring part 11. A first bearing 23 is fitted at the annular groove, and the drive drive wheel 1 is rotatably fixed to the fixing base 2 via the first bearing 23. A second bearing 24 is fixed inside the receiving cavity, and the drive shaft 3 is rotatably fixed to the fixing part 22 of the fixing base 2 via the second bearing 24. A protective cover can be provided on the plate part 21 to cover the belt fitted on the drive drive wheel 1.

[0031] The drive shaft 3 and the first ring 4 are connected by a spline structure. The outer circumferential wall of the drive shaft 3 and the inner circumferential wall of the first ring 4 are provided with mutually engaging spline grooves and spline protrusions. Both the drive shaft 3 and the first ring 4 are provided with spline grooves and spline protrusions. The spline groove on the drive shaft 3 passes through the opposite sides of the drive shaft.

[0032] The drive shaft 3 has a positioning part 31 extending axially and having a non-circular cross-section at one end outside the receiving cavity. The positioning part 31 has a fixing hole 32 extending radially through it. The flexible coupling includes a first linkage sleeve 6 for connecting with the positioning part 31 and a second linkage sleeve 5 for connecting with the output end. The first linkage sleeve 6 fits into the fixing hole 32, and its end extends out of the fixing hole 32. The second linkage sleeve 5 has a linkage groove that matches the outer edge of the positioning part 31 and the outer shape of the end of the first linkage sleeve 6. In this embodiment, the second linkage sleeve can be connected to the output end of the drive motor in any existing manner, such as by threaded fixing.

[0033] The first linkage sleeve 6 includes an elastic sleeve 61 made of rubber material on the outer side and a reinforcing post 62 on the inner side. The elastic sleeve 61 is through which the reinforcing post 62 passes. The second linkage sleeve 5 has a linkage hole 51 that penetrates radially and is used to engage with the elastic sleeve 61. One end of the reinforcing post 62 has a limiting part 621 that extends outward in a circumferential direction and has a width greater than the diameter of the linkage hole 51. The other end of the reinforcing post 62 is threaded with a threaded part 622, which includes a threaded part and a plate part with a diameter greater than the diameter of the linkage hole 51.

[0034] This invention has the advantages of ensuring the grinding and polishing accuracy of the grinding wheel / grinding wheel shaft and extending the service life of the grinding wheel / grinding wheel shaft and belt.

Claims

1. A grinding wheel transmission mechanism for a water-jetting diamond machine, comprising a drive transmission wheel for linkage with the grinding wheel, characterized in that: The drive wheel is fixed to the fixed base, which is used to fix the fixed part. The fixed base has a fixed part extending axially. The fixed part has an annular cross-section and forms a receiving cavity. The drive wheel is sleeved and rotatably fixed outside the fixed part. One end of the drive shaft is rotatably fixed in the receiving cavity. The other end of the drive shaft is provided with an elastic coupling for connecting to the output end of the drive motor. The drive shaft is connected to a first ring extending outward in a circumferential direction. The first ring is offset from the receiving cavity. The drive wheel is connected to a second ring extending inward in a circumferential direction. The first ring and the second ring are fixed.

2. The grinding wheel transmission mechanism for a water-polished diamond machine according to claim 1, characterized in that: The drive shaft has a positioning part that extends axially and has a non-circular cross-section at one end outside the receiving cavity. The positioning part has a fixing hole that passes through radially. The flexible coupling includes a first linkage sleeve for connecting with the positioning part and a second linkage sleeve for connecting with the output end. The first linkage sleeve fits into the fixing hole and the end of the first linkage sleeve extends out of the fixing hole. The end of the first linkage sleeve that extends at least out of the fixing hole has an elastic sleeve body. The second linkage sleeve has a linkage groove that matches the outer edge of the positioning part and the shape of the end of the first linkage sleeve.

3. The grinding wheel transmission mechanism for a water-polished diamond machine according to claim 2, characterized in that: The first linkage sleeve includes the elastic sleeve body located on the outer side and the reinforcing column located on the inner side.

4. The grinding wheel transmission mechanism for a water-polished diamond machine according to claim 3, characterized in that: The reinforcing column and the elastic sleeve are detachably fixed. The second linkage sleeve has a radially penetrating linkage hole for engaging with the elastic sleeve. One end of the reinforcing column has a limiting part that extends outward in a circumferential direction and has a width greater than the diameter of the linkage hole. The other end of the reinforcing column is threaded with a threaded component.

5. The grinding wheel transmission mechanism for a water-polished diamond machine according to claim 1, 2, or 3, characterized in that: An annular groove is formed on the outer circumferential wall of the fixing part. The annular groove penetrates the axial surface of the fixing part near the second ring. A first bearing is fitted at the annular groove, and the drive drive wheel is rotatably fixed to the fixing seat through the first bearing.

6. The grinding wheel transmission mechanism for a water-jetting diamond machine according to claim 1, 2, or 3, characterized in that: The first ring portion and the second ring portion are fixed by fasteners. The drive shaft and the first ring portion are engaged by a spline structure. The outer circumferential wall of the drive shaft and the inner circumferential wall of the first ring portion are provided with mutually engaging spline grooves and spline protrusions. The spline grooves penetrate the drive shaft or the first ring portion axially.

7. The grinding wheel transmission mechanism for a water-polished diamond machine according to claim 6, characterized in that: The spline groove on the drive shaft runs through the opposite sides of the drive shaft.

8. The grinding wheel transmission mechanism for a water-jetting diamond machine according to claim 1, 2, or 3, characterized in that: The mounting base includes a plate portion and a fixing portion fixed to the plate portion. The fixing portion is fixed to the plate portion by fasteners. The plate portion is fixed to the fixing portion, and the outer edge of the plate portion extends to the outer edge of the drive wheel.

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