Large ring gear internal grinding machine
By designing a large ring gear built-in grinder, the combination of the grinding assembly in the ring cavity and the rotating table and lifting table is used to solve the problem that large ring gear cannot be accurately processed and the internal ring grinding machine is large, and the precise processing and economic benefits of large ring gears are achieved.
Patent Information
- Application Number
- CN202421509228.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The existing technology cannot be precisely processed, and the internal ring grinding machine tool is large in scale and has high manufacturing cost, which seriously restricts the adoption of the internal ring grinding process.
A large ring gear built-in grinder is designed, including a base with an ring cavity, a grinding assembly and a plurality of clamps. The ring gear is grinded through a grinding assembly located inside the ring cavity, and precise grinding of each inner teeth is achieved using a rotating table and a lifting table.
Accurate processing of large gear rings of larger sizes is achieved, reducing equipment scale and manufacturing costs, and improving economic benefits.
Smart Images
Figure CN222725636U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of large gear ring gear grinding, and in particular relates to a large gear ring built-in gear grinding machine. Background Art
[0002] In the manufacturing process of coal mining machinery, it is usually necessary to grind the internal gears of large internal gear ring parts.
[0003] In the prior art, an internal gear grinding machine is usually used and an internal gear grinding head is matched with the external gear grinding machine for processing. The internal gear grinding head of this internal gear grinding method is located outside the machine tool. Due to the overhang length of the internal gear grinding head, when processing large gear rings, the robot arm needs to continue to extend forward to grind the internal teeth of the gear ring that are gradually away from the position of the robot arm, and it is impossible to accurately process each internal tooth of a large-sized large gear ring. In addition, the total load-bearing capacity of the internal gear grinding machine tool equipped with the internal gear grinding head reaches tens of tons, the equipment is large in scale, and the manufacturing cost is high, which seriously restricts the adoption of the internal gear ring grinding process. Utility Model Content
[0004] The embodiment of the utility model provides a large gear ring gear grinding machine, aiming to solve the problems in the prior art that large gear rings cannot be accurately processed and the internal gear ring grinding machine tool is large in scale.
[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a large-scale gear ring built-in gear grinding machine, including a machine base, a gear grinding assembly and a plurality of clamping members, the machine base is provided with an annular cavity, the machine base is provided with a rotating table, the rotating table is located in the annular cavity and a lifting platform is provided on the rotating table; a plurality of clamping members are distributed at intervals along the circumference of the annular cavity on the periphery of the annular cavity, each clamping member is connected to the machine base along the radial sliding of the annular cavity, and each of the clamping members is used to cooperate and clamp the gear ring to be ground; the gear grinding assembly is arranged on the lifting platform for grinding the gear ring; wherein the lifting platform is used to drive the gear grinding assembly to feed vertically, and the rotating table is used to drive the lifting platform and the gear grinding assembly to rotate synchronously.
[0006] In a possible implementation, a plurality of guide rails are arranged on the machine base around the annular cavity, and each guide rail corresponds to each clamping member one by one and is slidably connected thereto.
[0007] In one possible implementation, the clamping member includes a slider, a fixed rod and a pressure plate; the slider is slidably connected to the guide rail; the fixed rod is vertically connected to the slider, and a fastener is screwed on the fixed rod; the pressure plate is sleeved on the fixed rod and located below the fastener, and the pressure plate is used to cooperate with the slider to clamp the edge of the gear ring under the pressure of the fastener.
[0008] In a possible implementation, a groove is provided on a side of the sliding block close to the annular cavity, and an edge of the gear ring overlaps the groove.
[0009] In a possible implementation, a driving assembly is provided on the machine base, and the rotating platform and the lifting platform are both connected to the driving assembly.
[0010] In one possible implementation, the drive assembly includes a servo motor and a variable frequency motor. The servo motor is located below the rotating table, and the output end of the servo motor is connected to the rotating table. The variable frequency motor is located between the rotating table and the lifting table, and the output end of the variable frequency motor is connected to the lifting table.
[0011] In a possible implementation, the grinding assembly includes a first rod body, a second rod body, an intermediate shaft and a rotating drive member; one end of the first rod body is horizontally arranged on the lifting platform, and the other end extends radially along the lifting platform; one end of the second rod body is hinged to the first rod body, and the other end is rotatably provided with a grinding gear; the intermediate shaft is located at the hinge of the first rod body and the second rod body, and cooperates with the grinding gear; the rotating drive member is located on the lifting platform, and the output end of the rotating drive member cooperates with the intermediate shaft.
[0012] In a possible implementation, a telescopic driving member is provided on the lifting platform, and an output end of the telescopic driving member is connected to the second rod body.
[0013] In a possible implementation, a sliding groove is provided on a side of the second rod body close to the lifting platform, a moving block is slidably connected in the sliding groove, and the moving block is connected to the output end of the telescopic driving member.
[0014] In a possible implementation, a grinding wheel dresser is provided on the machine base.
[0015] The beneficial effects of the large gear ring built-in gear grinding machine provided by the utility model are as follows: compared with the prior art, the utility model adopts a machine base with an annular cavity, and grinds the gear ring through a gear grinding assembly located inside the annular cavity, which can reduce the distance between the gear grinding assembly and the inner wall of the gear ring, and can grind large gear rings of larger sizes, which is beneficial to the precise processing of large gear rings; and the rotating table inside the gear ring uses a dividing turntable to enable the gear grinding assembly to grind each internal tooth, and the lifting platform drives the gear grinding assembly to perform vertical feeding to complete single tooth grinding. The overall structure is relatively simple and the equipment scale is small, which is beneficial to saving manufacturing costs and improving economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 A schematic diagram of the three-dimensional structure of a large gear ring internal gear grinding machine for machining a gear ring provided by an embodiment of the utility model;
[0017] Figure 2 A schematic diagram of the front view of the structure of a large gear ring built-in gear grinding machine provided by an embodiment of the utility model;
[0018] Figure 3 A schematic diagram of the three-dimensional structure of the machine base used in the embodiment of the utility model;
[0019] Figure 4 A schematic diagram of the three-dimensional structure of the clamping member used in the embodiment of the utility model;
[0020] Figure 5 A schematic diagram of the three-dimensional structure of a large gear ring built-in gear grinding machine provided in an embodiment of the utility model;
[0021] Figure 6 A schematic diagram of the three-dimensional structure of the telescopic driving member and the second rod body provided in an embodiment of the utility model;
[0022] In the figure: 10, machine base; 11, annular cavity; 12, rotating table; 13, lifting table; 14, guide rail; 20, clamping member; 21, slider; 211, groove; 22, fixing rod; 221, fastener; 23, pressure plate; 30, grinding gear assembly; 31, first rod body; 32, second rod body; 33, grinding gear; 34, intermediate shaft; 35, rotating drive member; 36, telescopic drive member; 37, slide groove; 38, moving block; 40, driving assembly; 41, servo motor; 42, variable frequency motor; 50, grinding wheel dresser; 60, gear ring. DETAILED DESCRIPTION
[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0024] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the utility model 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, and therefore cannot be understood as a limitation on the utility model. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0025] Please also read Figure 1 and Figure 2, the large gear ring 60 gear grinding machine provided by the utility model is now described. The large gear ring 60 gear grinding machine includes a machine base 10, a gear grinding assembly 30 and a plurality of clamping members 20. The machine base 10 is provided with an annular cavity 11, and a rotating platform 12 is provided on the machine base 10. The rotating platform 12 is located in the annular cavity 11 and a lifting platform 13 is provided on the rotating platform 12; a plurality of clamping members 20 are distributed at intervals along the circumference of the annular cavity 11 at the periphery of the annular cavity 11, and each clamping member 20 is connected to the machine base 10 along the radial sliding of the annular cavity 11, and each of the clamping members 20 is used to cooperate and clamp the gear ring 60 to be ground; the gear grinding assembly 30 is arranged on the lifting platform 13, and is used to grind the gear ring 60; wherein the lifting platform 13 is used to drive the gear grinding assembly 30 to feed vertically, and the rotating platform 12 is used to drive the lifting platform 13 and the gear grinding assembly 30 to rotate synchronously.
[0026] It should be noted that the machine base 10 is used to process a gear ring 60 with an internal gear diameter of Φ800 ~Φ1200mm, a module of 5 ~ 12 mm, and a tooth width of 250mm; there are at least three clamping members 20, which can form a three-jaw chuck structure. The gear ring 60 can always be clamped by the clamping members 20 during the processing process and can be fixed on the machine base 10 to prevent movement; the grinding assembly 30 located in the annular cavity 11 can pass through the internal space of the gear ring 60, and control the grinding assembly 30 to rotate and rise and fall with the rotating table 12 and the lifting table 13 on the machine base 10 inside the gear ring 60 to process the inner wall of the gear ring 60; the rotating table 12 can be several The indexing turntable is controlled, and the rotation of the rotating table 12 is controlled by the numerical control system, so that the gear grinding assembly 30 can be aligned with each internal tooth on the gear ring 60, so that the processing of the gear ring 60 is more accurate; the lifting platform 13 completes the grinding of a single tooth by driving the gear grinding assembly 30 to feed vertically. The gear grinding assembly 30 fully grinds the single tooth through the vertical feeding of the lifting platform 13, and then the rotating table 12 is driven to rotate to change the grinding position, so that each internal tooth can be ground, and the grinding accuracy can be improved through the control of the numerical control system, thereby improving the quality of the finished product of the gear ring 60.
[0027] The beneficial effects of the built-in gear grinding machine for the large gear ring 60 provided by the utility model are as follows: compared with the prior art, the utility model adopts a machine base 10 with an annular cavity 11, and the gear ring 60 is ground by the gear grinding assembly 30 located inside the annular cavity 11, which can reduce the distance between the gear grinding assembly 30 and the inner wall of the gear ring 60, and can grind the gears of a larger large gear ring 60, which is beneficial to the precise processing of the large gear ring 60; and the rotating table 12 inside the gear ring 60 uses the indexing turntable to enable the gear grinding assembly 30 to grind each internal tooth, and the lifting platform 13 drives the gear grinding assembly 30 to perform vertical feeding to complete single tooth grinding. The overall structure is relatively simple and the equipment scale is small, which is beneficial to saving manufacturing costs and improving economic benefits.
[0028] In one possible implementation, see Figure 3A plurality of guide rails 14 are arranged on the machine base 10 around the annular cavity 11 , and each guide rail 14 corresponds to each clamping member 20 one by one and is slidably connected thereto.
[0029] It should be noted that the clamping member 20 slides horizontally along the machine base 10, which can change the relative position of the clamping member 20 and the annular cavity 11, and change the clamping space formed by multiple clamping members 20. When the size of the gear ring 60 to be processed changes, multiple clamping members 20 move horizontally on the guide rail 14 to change their relative positions to adapt to clamping gear rings 60 of different sizes. During the processing, the gear ring 60 is always clamped and fixed on the machine base 10 to prevent the gear ring 60 from moving during the processing and affecting the accuracy of the processing of the gear ring 60.
[0030] In one possible implementation, see Figure 2 and Figure 4 The clamping member 20 includes a slider 21, a fixing rod 22 and a pressure plate 23; the slider 21 is slidably connected to the guide rail 14; the fixing rod 22 is vertically connected to the slider 21, and a fastener 221 is screwed on the fixing rod 22; the pressure plate 23 is sleeved on the fixing rod 22 and is located below the fastener 221, and the pressure plate 23 is used to cooperate with the slider 21 to clamp the edge of the gear ring 60 under the pressure of the fastener 221.
[0031] It should be noted that the slider 21 is slidably connected to each guide rail 14, and the multiple clamping members 20 composed of the multiple sliders 21 effectively clamp the four sides of the gear ring 60, thereby improving the clamping effectiveness of the gear ring 60; the diameter of the through hole is slightly larger than the diameter of the fixing rod 22, so as to prevent the threads on the fixing rod 22 from affecting the vertical movement of the pressure plate 23 on the fixing plate, and the distance between the pressure plate 23 and the slider 21 is adjustable, and the clamping space can undergo both horizontal and vertical changes to adapt to the processing of gear rings 60 of different sizes, thereby improving the adaptability of the device; the gear ring 60 is pressed tightly on the pressure plate 23 On the slider 21, the gear ring 60 is prevented from moving, thereby improving the processing accuracy of the gear ring 60; the fastener 221 can be a nut, and the diameter of the fastener 221 is larger than the diameter of the through hole on the pressure plate 23, thereby preventing the fastener 221 from being unable to effectively press the pressure plate 23 when being screwed with the fixing rod 22; after the pressure plate 23 passes through the fixing rod 22 and is located on the upper surface of the gear ring 60, the fastener 221 is screwed with the fixing rod 22, so that the fastener 221 presses the upper surface of the pressure plate 23, limits the vertical movement of the pressure plate 23, and thereby prevents the gear ring 60 from moving on the supporting plate, which can improve the processing accuracy of the gear ring 60.
[0032] In one possible implementation, see Figure 4 A groove 211 is provided on one side of the slider 21 close to the annular cavity 11 , and the edge of the gear ring 60 overlaps the groove 211 .
[0033] It should be noted that each slider 21 is provided with a groove 211, and the groove 211 is arranged near the center of the annular cavity 11. The side walls of each groove 211 abut against the outer wall of the ring gear 60, so that the ring gear 60 can be embedded in the space surrounded by multiple grooves 211. The multiple grooves 211 can limit the horizontal movement of the ring gear 60 in the clamping space, and cooperate with the fastener 221 and the pressure plate 23 to limit the vertical movement of the ring gear 60 in the clamping space, so that the ring gear 60 can avoid vertical or lateral movement when it is located in the clamping space, which can improve the processing accuracy of the ring gear 60.
[0034] In a possible implementation, a driving assembly 40 is provided on the machine base 10 , and both the rotating platform 12 and the lifting platform 13 are connected to the driving assembly 40 .
[0035] It should be noted that the driving assembly 40 provides rotation and lifting power for the rotating table 12 and the lifting platform 13, so that the rotating table 12 can accurately control the gear grinding assembly 30 to align with each internal tooth through CNC indexing, and the lifting platform 13 can drive the gear grinding assembly 30 to perform vertical feeding, and each internal tooth can be accurately ground, which can improve the accuracy of the gear grinding of the ring gear 60 and improve the quality of the finished product of the ring gear 60.
[0036] In one possible implementation, the drive assembly 40 includes a servo motor 41 and a variable frequency motor 42. The servo motor 41 is located below the rotating table 12, and the output end of the servo motor 41 is connected to the rotating table 12. The variable frequency motor 42 is located between the rotating table 12 and the lifting platform 13, and the output end of the variable frequency motor 42 is connected to the lifting platform 13.
[0037] It should be noted that the servo motor 41 is located between the turntable 12 and the base 10, so that the turntable 12 rotates under the drive of the servo motor 41. The rotor inside the servo motor 41 is a permanent magnet, and the three-phase electricity controlled by the driver forms an electromagnetic field. The rotor rotates under the action of this magnetic field. At the same time, the encoder of the servo motor 41 feeds back a signal to the driver. The driver compares the feedback value with the target value and adjusts the rotation angle of the rotor; the servo motor 41 can control the precise division of the turntable 12, so that the grinding assembly 30 is aligned with each inner tooth, thereby improving the grinding accuracy of the gear ring 60; the variable frequency motor 42 rotates synchronously with the turntable 12, and can control the vertical feed speed of the lifting platform 13 to adapt to the processing of gear rings 60 of different materials.
[0038] In one possible implementation, see Figure 1 and Figure 2The grinding gear assembly 30 includes a first rod body 31, a second rod body 32, an intermediate shaft 34 and a rotating drive member 35; one end of the first rod body 31 is horizontally arranged on the lifting platform 13, and the other end extends radially along the lifting platform 13; one end of the second rod body 32 is hinged to the first rod body 31, and the other end is rotatably provided with a grinding gear 33; the intermediate shaft 34 is located at the hinge of the first rod body 31 and the second rod body 32, and is in transmission cooperation with the grinding gear 33; the rotating drive member 35 is located on the lifting platform 13, and the output end of the rotating drive member 35 is in transmission cooperation with the intermediate shaft 34.
[0039] It should be noted that the first rod body 31 and the second rod body 32 hinged to each other can adjust the horizontal distance between the grinding gear 33 and the ring gear 60, can adjust the grinding amount of the grinding gear 33 on the ring gear 60, can grind the ring gear 60 according to production requirements, and obtain the ring gear 60 with internal teeth of different depths; the second rod body 32 is provided with an avoidance groove for accommodating the grinding gear 33, and the grinding gear 33 is rotatably connected in the avoidance groove, and the axis of the grinding gear 33 is provided with a first transmission wheel, and the first transmission wheel passes through the avoidance groove; the second transmission wheel is rotatably connected to the central axis, and the second transmission wheel is connected to the first transmission wheel through a first conveyor belt, the output end of the rotating drive member 35 is connected to the third transmission wheel, and the third transmission wheel is connected to the second transmission wheel through a second conveyor belt, and the rotating drive member 35 can be a motor that can change the output frequency, and can change the number of revolutions of the grinding gear 33 by controlling the rotation speed. The number of revolutions of the grinding gear 33 is adjusted according to actual production requirements to adapt to the production of ring gears 60 of different sizes, which is beneficial to improving the grinding accuracy of the ring gear 60.
[0040] In one possible implementation, see Figure 1 and Figure 5 A telescopic driving member 36 is provided on the lifting platform 13 , and an output end of the telescopic driving member 36 is connected to the second rod body 32 .
[0041] It should be noted that the telescopic drive member 36 can be a cylinder, which controls the second rod body 32 through telescopic movement to make the grinding gear 33 approach or move away from the inner wall of the ring gear 60. The telescopic drive member 36 enables the grinding gear 33 to change the grinding amount of the ring gear 60 according to actual production needs, which can improve the accuracy of the tooth grinding of the ring gear 60 and improve the quality of the finished product of the ring gear 60; the telescopic drive member 36 enables the second rod body 32 to drive the grinding gear 33 to grind the ring gear 60 inside the ring gear 60, which can save the installation cost of the internal tooth grinding head on the external tooth grinding machine, which is beneficial to saving costs and improving economic benefits; and the telescopic drive member 36 inside the ring gear 60 can more easily control the grinding gear 33 for precise adjustment, and can grind large ring gears 60, which is beneficial to the precise processing of large ring gears 60.
[0042] In one possible implementation, see Figure 5A slide groove 37 is provided on one side of the second rod body 32 close to the lifting platform 13 , and a moving block 38 is slidably connected in the slide groove 37 , and the moving block 38 is connected to the output end of the telescopic driving member 36 .
[0043] It should be noted that the slide groove 37 and the moving block 38 can be used to offset the vertical displacement generated when the second rod body 32 moves up and down around the first rod body 31. That is, the slide groove 37 and the moving block 38 can offset the vertical displacement generated when the second rod body 32 drives the grinding gear 33 to approach or move away from the ring gear 60. The provision of the slide groove 37 and the moving block 38 can enable the telescopic drive member 36 to horizontally telescopically drive the second rod body 32 in a fixed state, so that the telescopic drive member 36 does not have vertical displacement. The slide groove 37 and the fixed block can keep the position of the telescopic drive member 36 fixed when driving the second rod body 32 to rotate, making the oil cylinder more stable, avoiding deformation of the piston rod of the telescopic drive member 36 caused by the rotation of the second rod body 32, and making the braking state more reliable.
[0044] In one possible implementation, see Figure 1 and Figure 2 A grinding wheel dresser 50 is provided on the machine base 10 .
[0045] It should be noted that during the grinding process, the edges and corners of the grinding gear 33 are gradually rounded and blunted under the action of friction and extrusion, and the grinding chips of the ring gear 60 are often embedded in the pores on the surface of the grinding gear 33, blocking the surface of the grinding gear 33, causing the grinding gear 33 to lose its grinding ability; the grinding wheel dresser 50 is a special machine tool accessory used for manual flat grinding, universal tool grinding and various surface grinders and curve grinders to dress various grinding wheel sections composed of straight lines and arcs; the grinding wheel dresser 50 is arranged on the side wall of the lifting platform 13, and the telescopic drive member 36 can control the second rod body 32 to approach the lifting platform 13 by contraction, so that the grinding gear 33 is close to the grinding wheel dresser 50 and is trimmed, thereby ensuring the sharpness of the grinding gear 33 during the grinding process, which is conducive to the precise processing of the large ring gear 60.
[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. Large gear ring built-in gear grinding machine, characterized by: include: A machine base, wherein an annular cavity is provided on the machine base, a rotating platform is provided on the machine base, the rotating platform is located in the annular cavity and a lifting platform is provided on the rotating platform; A plurality of clamping members are distributed at intervals along the circumference of the annular cavity on the periphery of the annular cavity, each of the clamping members is slidably connected to the machine base along the radial direction of the annular cavity, and each of the clamping members is used to cooperate and clamp the gear ring to be ground; A gear grinding assembly, arranged on the lifting platform, for grinding the gear ring; The lifting platform is used to drive the gear grinding assembly to feed vertically, and the rotating platform is used to drive the lifting platform and the gear grinding assembly to rotate synchronously.
2. The large gear ring internal gear grinding machine according to claim 1, characterized in that: A plurality of guide rails are arranged on the machine base around the annular cavity, and each of the guide rails corresponds to each of the clamping members one by one and is slidably connected thereto.
3. The large gear ring internal gear grinding machine according to claim 2, characterized in that: The clamping member comprises: A slider, slidably connected to the guide rail; A fixing rod, vertically connected to the sliding block, with a fastener being screwed onto the fixing rod; A pressure plate is sleeved on the fixing rod and is located below the fastener. The pressure plate is used to cooperate with the slider to clamp the edge of the gear ring under the pressing action of the fastener.
4. The large gear ring internal gear grinding machine according to claim 3, characterized in that: A groove is provided on one side of the sliding block close to the annular cavity, and the edge of the gear ring overlaps the groove.
5. The large gear ring internal gear grinding machine according to claim 1, characterized in that: The machine base is provided with a driving assembly, and the rotating platform and the lifting platform are both connected to the driving assembly.
6. The large gear ring internal gear grinding machine according to claim 5, characterized in that: The driving assembly includes a servo motor and a variable frequency motor. The servo motor is located below the rotating table, and the output end of the servo motor is connected to the rotating table. The variable frequency motor is located between the rotating table and the lifting table, and the output end of the variable frequency motor is connected to the lifting table.
7. The large gear ring internal gear grinding machine according to claim 1, characterized in that: The gear grinding assembly comprises: A first rod body, one end of which is horizontally arranged on the lifting platform, and the other end of which extends radially along the lifting platform; A second rod body, one end of which is hinged to the first rod body and the other end of which is rotatably provided with a grinding gear; An intermediate shaft, located at the hinge of the first rod body and the second rod body, and drivingly matched with the grinding gear; A rotary drive member is located on the lifting platform, and an output end of the rotary drive member is in driving cooperation with the intermediate shaft.
8. The large gear ring internal gear grinding machine according to claim 7, characterized in that: The lifting platform is provided with a telescopic driving member, and the output end of the telescopic driving member is connected to the second rod body.
9. The large gear ring internal gear grinding machine according to claim 8, characterized in that: A sliding groove is provided on one side of the second rod body close to the lifting platform, a moving block is slidably connected in the sliding groove, and the moving block is connected to the output end of the telescopic driving component.
10. The large gear ring internal gear grinding machine according to any one of claims 1 to 9, characterized in that: A grinding wheel dresser is arranged on the machine base.