Grinding device for transmission gear machining

Abstract

The invention relates to the technical field of grinding equipment for transmission gear machining, in particular to a grinding device for transmission gear machining, which comprises a workbench, a gear rotating module, a multi-degree-of-freedom moving module, a deflection module, a grinding module and a cooling module are fixed on the workbench, and the gear rotating module is provided with a gear rotating part for fixing a gear; the multi-degree-of-freedom moving module is provided with a free moving part capable of moving in a multi-degree-of-freedom mode, the deflection module is fixedly connected with the free moving part and provided with a deflection part, the grinding module is fixedly connected with the deflection part, a power mechanism and two sets of symmetrically-arranged grinding mechanisms are fixed in the grinding module, and the cooling module is fixed to the outer side of the grinding module. Two grinding wheels with different mesh numbers, namely rough grinding and fine grinding, are integrated, and coordinated movement of the multi-degree-of-freedom moving module and the deflection module is combined, so that rough grinding and fine grinding of the gear are continuously completed under one-time clamping, and the final machining precision of the gear is improved.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment for machining moving gears, and more particularly to a grinding device for machining transmission gears. Background Technology

[0002] As a core component of mechanical transmission systems, gears directly determine the efficiency, reliability, and service life of the entire transmission device through their tooth profile accuracy, surface quality, and fatigue life. Grinding, as a key process in gear finishing, is the final and crucial step in improving gear geometric accuracy, enhancing tooth surface integrity, and ensuring its final performance.

[0003] Currently, in gear machining that requires both rough and fine grinding, the mainstream process in the industry mostly adopts a step-by-step machining method. While this method is usable, the machining datum inevitably becomes inaccurate between the two clamping operations due to factors such as fixture accuracy, positioning surface errors, and changes in clamping force. This makes it difficult to guarantee that the workpiece's position during fine grinding is completely consistent with that during rough grinding. This loss of datum and repeated positioning errors directly affect key quality indicators such as the final tooth profile accuracy. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a grinding device for processing transmission gears, so as to solve the problem that the processing datum of the gears will inevitably be erroneous between two clamping operations due to factors such as the accuracy of the clamp, the error of the positioning surface and the change of the clamping force.

[0005] To achieve the above objectives, the present invention provides a grinding apparatus for processing transmission gears, comprising a worktable, on which are fixed the following: a gear rotation module having a gear rotation part for fixing the gear, the rotation centerline of the gear rotation part being arranged vertically; a multi-degree-of-freedom movement module having a free movement part capable of multi-degree-of-freedom movement; a deflection module fixedly connected to the free movement part, having a deflection part capable of rotating in the horizontal direction; a grinding module fixedly connected to the deflection part, having a power mechanism and two sets of symmetrically arranged grinding mechanisms fixed inside, the grinding mechanisms having grinding wheels extending out of the grinding module, and the grinding mechanisms having a liquid supply channel; and a cooling module fixed to the outside of the grinding module and matching the corresponding grinding mechanism, having a cooling channel, one end of the cooling channel being connected to the liquid supply channel, and the other end of the cooling channel being provided with a cooling nozzle for cooling the gear.

[0006] In an alternative example, the power mechanism includes a power motor fixed to the grinding base, and a drive bevel gear fixed on the output shaft of the power motor, the drive bevel gear being driven connected to two sets of grinding mechanisms.

[0007] In an optional example, the grinding module includes a grinding base, which is fixedly connected to a deflection part. The grinding base has a base mounting cavity. The grinding mechanism includes a grinding spindle, which is fixedly connected to the grinding base by a rotatable connection. One end of the grinding spindle is disposed in the base mounting cavity, and a driven bevel gear is fixed on its outer wall. The other end of the grinding spindle extends through the base mounting cavity and is fixedly connected to a grinding wheel. The driving bevel gear meshes with the driven bevel gear.

[0008] In an optional example, the grinding spindle has a spindle flow channel, and the base mounting cavity has a flow divider fixed therein. The flow divider has a flow divider inlet and two flow divider outlets. The flow divider outlets are connected to the flow divider by rotation and are connected to the corresponding spindle flow channel. The deflection module has a rotary water connector fixed therein. The rotary water connector has a rotary connector end that can rotate synchronously with the deflection part. The rotary connector end is connected to the flow divider inlet by a pipeline connection. The spindle flow channel, the flow divider, and the rotary connector are combined to form a liquid supply channel.

[0009] In an optional example, the spindle flow channel has an end inlet and a plurality of outer wall outlets. The end inlet is located at one end of the grinding spindle within the base mounting cavity, and the outer wall outlets are located on the outer wall of the grinding spindle and are disposed outside the grinding base.

[0010] In an optional example, the cooling module includes a cooling housing with a cooling mounting cavity inside. A movable groove penetrating the cooling housing is formed within the cooling mounting cavity. A cooling ring is rotatably mounted within the cooling mounting cavity. The centerline of the cooling ring coincides with the centerline of the grinding spindle, which passes axially through the cooling ring. An annular groove is formed on the inner wall of the cooling ring. A liquid outlet on the outer wall is located within and communicates with the annular groove. A cooling arm movable within the movable groove is provided on the outer wall of the cooling ring. A cooling channel penetrating into the annular groove is formed within the cooling arm. A cooling nozzle is fixed to the end of the cooling channel. The annular groove and the cooling channel combine to form a cooling flow channel.

[0011] In one optional example, a plurality of worm gear teeth are provided on the outer wall of the cooling ring, and a worm is installed inside the cooling housing by means of rotation. The worm meshes with the worm gear teeth, and a cooling motor is fixed on the outer wall of the cooling housing. The output shaft of the cooling motor is drivenly connected to the worm.

[0012] In an optional example, the cooling housing includes a cooling outer shell, the cooling mounting cavity and the movable groove are formed on the cooling outer shell, one end of the side of the cooling outer shell is provided with a first rotating hole that penetrates to the cooling mounting cavity, the other end of the cooling outer shell is fixed with a limiting plate, the limiting plate is provided with a second rotating hole that penetrates to the cooling mounting cavity, and each end of the cooling ring is provided with a limiting ring extending axially, and the two sets of limiting rings are respectively rotatably inserted into the corresponding first rotating hole and second limiting ring.

[0013] In an optional example, the multi-degree-of-freedom movement module includes a vertical movement module and a horizontal movement module. The vertical movement module is fixedly connected to the worktable by bolts and has a vertical movement platform capable of vertical movement. The horizontal movement module is fixed to the vertical movement platform by bolts. The free movement part includes a horizontal movement platform capable of moving along the width direction of the worktable. The horizontal movement platform is slidably mounted on the horizontal movement module. The deflection module is fixedly connected to the horizontal movement platform by bolts.

[0014] In one alternative example, a length movement module is fixed on the workbench, the length movement module having a length movement stage capable of moving along the length direction of the workbench, and the gear rotation module is fixedly connected to the length movement stage.

[0015] The beneficial effects of this invention are as follows: by integrating two grinding wheels with different grit sizes for roughing and fine grinding into one unit, and combining the coordinated movement of the multi-degree-of-freedom movement module and the deflection module, the gear can be continuously roughed and fine ground in a single clamping. This avoids the loss of reference and repeated positioning errors caused by multiple disassembly and assembly, greatly improving the final machining accuracy of the gear. It also eliminates the auxiliary time for repeated clamping and tool setting, making the machining process continuous and compact, significantly improving the overall machining efficiency. At the same time, through the fluid supply channel, the high-speed rotating grinding wheel and its bearings and other key components are effectively cooled, suppressing the accumulation of heat at the grinding point, ensuring the thermal stability of the grinding unit under long-term continuous working conditions, reducing the risk of grinding burns, residual stress, and microcracks on the gear surface, thereby ensuring the integrity, hardness, and fatigue strength of the gear surface, and improving the reliability and lifespan of the gear product. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1This is a three-dimensional structural diagram of an embodiment of the present invention; Figure 2 This is a three-dimensional structural diagram of the grinding module in an embodiment of the present invention; Figure 3 This is a cross-sectional view of the grinding module in an embodiment of the present invention; Figure 4 This is an exploded view of the grinding module in an embodiment of the present invention. Figure 1 ; Figure 5 This is an exploded view of the grinding module in an embodiment of the present invention. Figure 2 ; Figure 6 This is a cross-sectional view of the grinding spindle in an embodiment of the present invention; Figure 7 This is a cross-sectional view of the diversion connector in an embodiment of the present invention; Figure 8 This is a three-dimensional structural diagram of the cooling module in an embodiment of the present invention; Figure 9 This is a cross-sectional view of the cooling module in an embodiment of the present invention; Figure 10 This is an exploded structural diagram of the cooling module in an embodiment of the present invention; Figure 11 This is a three-dimensional structural diagram of the cooling ring in an embodiment of the present invention; Figure 12 This is a three-dimensional structural diagram of the multi-degree-of-freedom movement module in an embodiment of the present invention.

[0018] The diagram is labeled as follows: 1. Worktable; 2. Gear rotation module; 21. Gear rotation part; 3. Multi-degree-of-freedom movement module; 31. Free movement part; 32. Vertical movement module; 33. Horizontal movement module; 34. Vertical movement stage; 4. Deflection module; 41. Deflection part; 5. Grinding module; 51. Power mechanism; 511. Power motor; 512. Driving bevel gear; 52. Grinding mechanism; 521. Liquid supply channel; 522. Grinding spindle; 5221. Spindle channel; 5222. End inlet; 5223. Outer wall outlet; 53. Grinding wheel; 54. Grinding base; 541. Base mounting cavity; 55. Driven bevel gear; 56. Diverter; 561. 562. Diverting inlet; 563. Diverting outlet; 564. Connector body; 565. Guide cavity; 566. Diverting outlet pipe; 57. Rotary water connector; 571. Rotary connector end; 6. Cooling module; 61. Cooling channel; 62. Cooling shell; 621. Cooling mounting cavity; 622. Movable groove; 623. Volute groove; 6201. Cooling shell; 6202. First rotating hole; 6203. Limiting plate; 6204. Second rotating hole; 63. Cooling ring; 631. Ring groove; 632. Cooling arm; 633. Worm gear tooth; 634. Limiting ring; 64. Worm; 65. Cooling motor; 7. Cooling nozzle; 8. Length moving module; 81. Length moving platform. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] In one embodiment, please refer to Figures 1 to 3 As shown, the present invention provides a grinding device for processing transmission gears, including a worktable 1 and a gear rotation module 2, a multi-degree-of-freedom movement module 3, a deflection module 4, a grinding module 5 and a cooling module 6 fixed on the worktable 1.

[0022] The gear rotation module 2 has a gear rotation part 21 for fixing the gear. The rotation center line of the gear rotation part 21 is arranged vertically. The gear rotation part 21 has a clamping rod for fixing the gear. The gear to be processed is fixed on the outer wall of the clamping rod, so that the gear can rotate accurately in the horizontal plane.

[0023] The multi-degree-of-freedom moving module 3 has a free-moving part 31 capable of multi-degree-of-freedom movement. The free-moving part 31 drives the grinding module 5 thereon to move, thereby moving the entire subsequent grinding unit to a position close to the gear processing area.

[0024] The deflection module 4 is fixedly connected to the free-moving part 31 and has a deflection part 41 that can rotate in the horizontal direction. The deflection module 4 adopts a rotary table structure, and the rotation axis of the deflection part 41 is set in the horizontal direction. It can drive the entire grinding module 5 to rotate around the vertical axis, adjust the angle of the two grinding wheels 53 relative to the gear tooth profile, so as to adapt to different gear pressure angles or perform specific profile grinding.

[0025] The grinding module 5 is fixedly connected to the deflection part 41, and a power mechanism 51 and two sets of symmetrically arranged grinding mechanisms 52 are fixed inside it. The grinding mechanism 52 has a grinding wheel 53 extending out of the grinding module 5, and the grinding mechanism 52 has a liquid supply channel 521. Different grinding mechanisms 52 can use grinding wheels 53 with different mesh sizes, which can realize the fine grinding and rough grinding of gears on a single grinding device. The liquid supply channel 521 is connected to an external liquid supply device through a pipeline connection. The liquid supply device is used to provide coolant, and the coolant can cool the grinding mechanism 52 when passing through the liquid supply channel 521.

[0026] The cooling module 6 is fixed to the outside of the grinding module 5 and matches the corresponding grinding mechanism 52. It has a cooling channel 61, one end of which is connected to the liquid supply channel 521, and the other end of the cooling channel 61 is provided with a cooling nozzle 7 for cooling the gear. The coolant is sprayed out after passing through the cooling channel to cool the surface of the gear, ensuring that the gear can be fully cooled.

[0027] Working principle: After the gear is clamped in the gear rotating part 21, the multi-degree-of-freedom moving module 3 drives the grinding module 5 to move to the processing start position. First, the deflection module 4 is adjusted to the angle required for rough grinding, and the rough grinding wheel 53 is started to perform rough grinding on the gear. During this process, the coolant continuously cools the grinding mechanism 52 and the gear. After the rough grinding is completed, the angle is adjusted by the deflection module 4 or the position is switched by the multi-degree-of-freedom moving module 3 so that the fine grinding wheel 53 is aligned with the tooth surface for fine grinding.

[0028] Specifically, this example integrates two grinding wheels 53 with different grit sizes for roughing and fine grinding into one unit, and combines the coordinated movement of the multi-degree-of-freedom movement module 3 and the deflection module 4 to achieve continuous roughing and fine grinding of gears in a single setup. This avoids the loss of reference and repeated positioning errors caused by multiple disassembly and assembly, greatly improving the final machining accuracy of the gears. It also eliminates the need for repeated clamping and tool setting, resulting in a continuous and compact machining process that significantly improves overall machining efficiency. At the same time, the fluid supply channel 521 effectively cools the high-speed rotating grinding wheel 53 and its bearings and other key components, suppressing the accumulation of heat at the grinding point and ensuring the thermal stability of the grinding unit under long-term continuous working conditions. This reduces the risk of grinding burns, residual stress, and microcracks on the gear surface, thereby ensuring the integrity, hardness, and fatigue strength of the gear surface and improving the reliability and lifespan of the gear products.

[0029] In an optional example, please refer to Figures 1 to 5 As shown, the power mechanism 51 includes a power motor 511 fixed to the grinding base 54 by bolts. A drive bevel gear 512 is fixed to the output shaft of the power motor 511 by a key connection. The drive bevel gear 512 is driven by two sets of grinding mechanisms 52. The output shaft of the power motor 511 can rotate in both directions.

[0030] Specifically, in this example, the power motor 511 and the active bevel gear 512 work together to synchronously drive the two grinding mechanisms 52, which effectively reduces the installation space of related components and lowers the manufacturing cost of the grinding module 5. At the same time, since the two grinding wheels 53 are synchronously driven by the same motor through rigid gears, the off-center load or torsional torque generated on the gear workpiece and its fixture during the processing is reduced, making the entire process system more stable and conducive to further improving the processing accuracy and surface quality.

[0031] In an optional example, please refer to Figures 1 to 5As shown, the grinding module 5 includes a grinding base 54, which is fixedly connected to the deflection part 41 by bolts. The grinding base 54 has a base mounting cavity 541. The grinding mechanism 52 includes a grinding spindle 522, which is fixedly connected to the grinding base 54 by bearings. One end of the grinding spindle 522 is located in the base mounting cavity 541, and a driven bevel gear 55 is fixed on its outer wall by a key connection. The other end of the grinding spindle 522 extends through the base mounting cavity 541 and is fixedly connected to the grinding wheel 53 by a key connection. The driving bevel gear 512 meshes with the driven bevel gear 55. The grinding base 54 has a bearing groove, in which a connecting bearing is inserted and fixed. The outer wall of the grinding base 54 has a bearing hole that extends into the bearing groove. The grinding spindle 522 passes through the bearing hole and is inserted and fixed in the connecting bearing. The other end of the grinding spindle 522 has a first clamping end with a threaded hole. A clamping block is fixed in the threaded hole by a threaded connection. The clamping block has a second clamping end that matches the first clamping end. The first clamping end and the second clamping end combine to form a clamping groove for clamping the grinding wheel 53.

[0032] Specifically, the grinding module 5 in this example adopts the design of an integrated mounting cavity for the grinding base 54. The grinding module 5 has a compact structure, and the power is transmitted through a bevel gear pair, which makes it stable and precise in transmission.

[0033] In an optional example, please refer to Figures 1 to 6As shown, a main shaft flow channel 5221 is provided inside the grinding spindle 522, and a flow divider 56 is fixed inside the base mounting cavity 541. The flow divider 56 has a flow divider inlet 561 and two flow divider outlets 562. The flow divider outlets 562 are connected to the flow divider 56 by rotation. The flow divider outlets 562 are fixedly connected to the corresponding grinding spindle 522 by bolts, so that they are connected to the corresponding main shaft flow channel 5221. A rotary water connector 57 is fixed on the deflection module 4 by bolts. The rotary water connector 57 has a rotary connector end 571 that can rotate synchronously with the deflection part 41. The rotary connector end 571 is connected to the flow divider inlet 561 by a pipeline. The main shaft flow channel 5221, the flow divider 56 and the rotary connector are combined to form the liquid supply flow channel 521. The diversion connector 56 includes a connector body 563, a three-way flow guiding cavity 5631 is provided inside the connector body 563, a diversion inlet 561 is provided at the bottom of the connector body 563, and a diversion outlet pipe 564 is fixedly installed on both sides of the connector body 563 by means of bearing connection. The diversion outlet pipe 564 is connected to the flow guiding cavity 5631, and the diversion outlet 562 is provided at the end of the diversion outlet pipe 564 away from the connector body 563. A pipe through groove is provided on the deflection part 41, and the pipe of the rotating connector end 571 passes through the pipe through groove and is connected to the diversion inlet 561.

[0034] Specifically, this example uses a closed-loop fluid supply channel 521, consisting of a rotary water connector 57, a diverter connector 56, and an internal flow channel of the spindle, to achieve leak-free and continuous coolant delivery during dynamic rotation. This improves the reliability and ease of maintenance of the grinding module 5, avoids external hose entanglement and wear, and increases the service life of the grinding module 5. At the same time, its compact structural design enables coolant delivery within a limited space, reducing the installation space of the grinding module 5.

[0035] In an optional example, please refer to Figures 1 to 6 As shown, the spindle flow channel 5221 has an end inlet 5222 and several outer wall outlets 5223. The end inlet 5222 is located at one end of the grinding spindle 522 within the base mounting cavity 541, and the outer wall outlets 5223 are located on the outer wall of the grinding spindle 522 and are disposed outside the grinding base 54.

[0036] Specifically, in this example, after the coolant passes through the end inlet 5222, it flows out quickly from the outer wall outlet 5223, ensuring the rapid outflow of coolant and guaranteeing the cooling effect of the grinding spindle 522.

[0037] In an optional example, please refer to Figures 1 to 7As shown, the cooling module 6 includes a cooling housing 62 fixedly connected to the grinding base 54 by bolts. A cooling mounting cavity 621 is provided inside the cooling housing 62. A movable groove 622 penetrating the cooling housing 62 is provided inside the cooling mounting cavity 621. A cooling ring 63 is rotatably installed inside the cooling mounting cavity 621. The grinding spindle 522 passes through the cooling ring 63 axially. The center line of the cooling ring 63 coincides with the center line of the grinding spindle 522. An annular groove 631 is provided on the inner wall of the cooling ring 63. An outlet 5223 is provided in the annular groove 631 and communicates with the annular groove 631. A cooling arm 632 that can move in the movable groove 622 is provided on the outer wall of the cooling ring 63. A cooling channel penetrating into the annular groove 631 is provided in the cooling arm 632. A cooling nozzle 7 is fixed to the end of the cooling channel. The annular groove 631 and the cooling channel combine to form a cooling flow channel 61. The coolant is pumped in from the outside and flows through the rotary water connector 57 and the diverter connector 56 in sequence. It enters the spindle flow channel 5221 of the grinding spindle 522 and is sprayed into the annular groove 631 from the liquid outlet 5223 on its outer wall. Since the cooling ring 63 can rotate relative to the spindle and the cooling arm 632 can move in the movable groove 622, the position and angle of the cooling nozzle 7 can be flexibly adjusted within a certain range. The coolant enters the cooling channel of the cooling arm 632 through the annular groove 631 and is finally sprayed precisely and concentratedly from the flexibly positioned cooling nozzle 7 onto the instantaneous grinding area of ​​the gear.

[0038] Specifically, this example adjusts the position of the cooling nozzle 7 by rotating the angle of the cooling ring 63, ensuring that the cooling nozzle 7 can accurately position the surface of the gear, further improving the grinding quality of the gear. In addition, the cooling module 6 has a compact structure, further reducing the installation space of the cooling module 6.

[0039] In an optional example, please refer to Figures 1 to 11 As shown, the outer wall of the cooling ring 63 has several worm gear teeth 633. A worm 64 is rotatably mounted inside the cooling housing 62, meshing with the worm gear teeth 633. A cooling motor 65 is fixed to the outer wall of the cooling housing 62, and the output shaft of the cooling motor 65 is driven by the worm 64. The outer wall of the cooling housing 62 has a worm groove 623 communicating with the cooling mounting cavity 621. The worm 64 is inserted into the worm groove 623 via a bearing connection, and the end of the worm 64 is fixedly connected to the output shaft of the cooling motor 65 via a coupling.

[0040] Specifically, in this example, the rotation of the cooling ring 63 is precisely controlled by the rotation of the worm gear 64 driven by the cooling motor 65. The cooling nozzle 7 becomes an execution terminal with a precisely controllable angle, which is convenient for remote operation by the operator. At the same time, the self-locking characteristic of the worm gear 64 transmission ensures the stability of the nozzle angle in the non-adjusted state.

[0041] In an optional example, please refer to Figures 1 to 11 As shown, the cooling housing 62 includes a cooling outer shell 6201, a cooling mounting cavity 621, and a movable groove 622 on the cooling outer shell 6201. One end of the side of the cooling outer shell 6201 has a first rotating hole 6202 that penetrates into the cooling mounting cavity 621. The other end of the cooling outer shell 6201 is fixed with a limiting plate 6203 by bolt connection. The limiting plate 6203 has a second rotating hole 6204 that penetrates into the cooling mounting cavity 621. The ends of the cooling rings 63 are provided with limiting rings 634 that extend axially. The two sets of limiting rings 634 are rotatably inserted into the corresponding first rotating hole 6202 and second limiting ring 634.

[0042] Specifically, this example uses a combination structure of cooling housing 62 consisting of cooling outer shell 6201 and limiting plate 6203 to facilitate quick disassembly and maintenance of cooling housing 62.

[0043] In an optional example, please refer to Figures 1 to 12 As shown, the multi-degree-of-freedom movement module 3 includes a vertical movement module 32 and a horizontal movement module 33. The vertical movement module 32 is fixedly connected to the worktable 1 by bolts. The vertical movement module 32 has a vertical movement platform 34 capable of vertical movement. The horizontal movement module 33 is fixed to the vertical movement platform 34 by bolts. The free movement part 31 includes a horizontal movement platform capable of moving along the width direction of the worktable 1. The horizontal movement platform is slidably mounted on the upper horizontal movement module 33. The deflection module 4 is fixedly connected to the horizontal movement platform by bolts. Both the vertical movement module 32 and the horizontal movement module 33 can be linear movement modules.

[0044] Specifically, this example achieves multi-degree-of-freedom movement of the grinding mechanism 52 through the cooperation of the vertical moving module 32 and the horizontal moving module 33, ensuring the processing range of gear grinding.

[0045] In an optional example, please refer to Figures 1 to 12 As shown, a length movement module 8 is fixed on the worktable 1. The length movement module 8 has a length movement stage 81 that can move along the length direction of the worktable 1, and the gear rotation module 2 is fixedly connected to the length movement stage 81. The length movement module 8 can be a linear movement module.

[0046] Specifically, this example, through the cooperation of the length moving module 8, the vertical moving module 32 and the horizontal moving module 33, enables the equipment to flexibly adapt to the production of gears with different tooth widths and specifications, as well as the processing requirements of gears with special tooth profile modifications such as helix angles, thereby further improving the working range of the grinding device.

[0047] In summary, this invention integrates two grinding wheels 53 with different grit sizes for roughing and fine grinding into one unit, and combines the coordinated movement of the multi-degree-of-freedom movement module 3 and the deflection module 4 to achieve continuous roughing and fine grinding of gears in a single setup. This avoids the loss of reference and repeated positioning errors caused by multiple disassembly and assembly, greatly improving the final machining accuracy of the gears. It also eliminates the need for repeated clamping and tool setting, resulting in a continuous and compact machining process that significantly improves overall machining efficiency. At the same time, the closed-loop fluid supply channel 521, composed of the rotary water connector 57, the diverter connector 56, and the internal flow channel of the spindle, enables leak-free and continuous coolant delivery during dynamic rotation, improving the reliability and maintenance convenience of the grinding module 5, avoiding external hose entanglement and wear, and increasing the service life of the grinding module 5.

[0048] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0049] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A grinding apparatus for machining transmission gears, comprising a worktable (1), characterized in that, The workbench (1) is fixed with: The gear rotation module (2) has a gear rotation part (21) for fixing the gear, and the rotation center line of the gear rotation part (21) is arranged vertically; The multi-degree-of-freedom movement module (3) has a free movement part (31) capable of multi-degree-of-freedom movement; The deflection module (4) is fixedly connected to the free-moving part (31) and has a deflection part (41) that can rotate in the horizontal direction; The grinding module (5) is fixedly connected to the deflection part (41), and a power mechanism (51) and two sets of symmetrically arranged grinding mechanisms (52) are fixed inside it. The grinding mechanism (52) has a grinding wheel (53) extending out of the grinding module (5), and the grinding mechanism (52) has a liquid supply channel (521). The cooling module (6) is fixed to the outside of the grinding module (5) and matches the corresponding grinding mechanism (52). It has a cooling channel (61), one end of which is connected to the liquid supply channel (521), and the other end of which is provided with a cooling nozzle (7) for cooling the gear.

2. The grinding apparatus for machining transmission gears according to claim 1, characterized in that, The power mechanism (51) includes a power motor (511) fixed to the grinding base (54), and an active bevel gear (512) is fixed on the output shaft of the power motor (511). The active bevel gear (512) is driven and connected to two sets of grinding mechanisms (52).

3. The grinding apparatus for machining transmission gears according to claim 2, characterized in that, The grinding module (5) includes a grinding base (54), which is fixedly connected to the deflection part (41). The grinding base (54) has a base mounting cavity (541). The grinding mechanism (52) includes a grinding spindle (522), which is fixedly connected to the grinding base (54) by a rotatable connection. One end of the grinding spindle (522) is located in the base mounting cavity (541), and a driven bevel gear (55) is fixed on its outer wall. The other end of the grinding spindle (522) passes through the base mounting cavity (541) and is fixedly connected to the grinding wheel (53). The driving bevel gear (512) meshes with the driven bevel gear (55).

4. The grinding apparatus for machining transmission gears according to claim 3, characterized in that, The grinding spindle (522) has a spindle flow channel (5221) inside. The base mounting cavity (541) is fixed with a flow divider (56). The flow divider (56) has a flow divider inlet (561) and two flow divider outlets (562). The flow divider outlets (562) are connected to the flow divider (56) by rotation and are connected to the corresponding spindle flow channel (5221). The deflection module (4) is fixed with a rotary water connector (57). The rotary water connector (57) has a rotary connector end (571) that can rotate synchronously with the deflection part (41). The rotary connector end (571) is connected to the flow divider inlet (561) by pipeline connection. The spindle flow channel (5221), the flow divider (56) and the rotary connector are combined to form a liquid supply flow channel (521).

5. The grinding apparatus for machining transmission gears according to claim 4, characterized in that, The main shaft flow channel (5221) has an end inlet (5222) and a plurality of outer wall outlets (5223). The end inlet (5222) is located at one end of the grinding spindle (522) within the base mounting cavity (541). The outer wall outlets (5223) are located on the outer wall of the grinding spindle (522) and are disposed outside the grinding base (54).

6. The grinding apparatus for machining transmission gears according to claim 5, characterized in that, The cooling module (6) includes a cooling housing (62), a cooling mounting cavity (621) is provided inside the cooling housing (62), a movable groove (622) penetrating the cooling housing (62) is provided inside the cooling mounting cavity (621), a cooling ring (63) is installed in the cooling mounting cavity (621) by rotation, the center line of the cooling ring (63) coincides with the center line of the grinding spindle (522), the grinding spindle (522) passes through the cooling ring (63) axially, and the cooling ring (63)... 3) The inner wall is provided with an annular groove (631), the liquid outlet (5223) of the outer wall is provided in the annular groove (631) and is connected to the annular groove (631). The outer wall of the cooling ring (63) is provided with a cooling arm (632) that can move in the movable groove (622). The cooling arm (632) is provided with a cooling channel that extends into the annular groove (631). The cooling nozzle (7) is fixed at the end of the cooling channel. The annular groove (631) and the cooling channel are combined to form a cooling flow channel (61).

7. The grinding apparatus for machining transmission gears according to claim 6, characterized in that, The outer wall of the cooling ring (63) is provided with a plurality of worm gear teeth (633). The cooling housing (62) is provided with a worm (64) by means of rotation. The worm (64) meshes with the worm gear teeth (633). The outer wall of the cooling housing (62) is fixed with a cooling motor (65). The output shaft of the cooling motor (65) is drivenly connected to the worm (64).

8. The grinding apparatus for machining transmission gears according to claim 7, characterized in that, The cooling housing (62) includes a cooling shell (6201), a cooling mounting cavity (621) and a movable groove (622) are formed on the cooling shell (6201), a first rotating hole (6202) is formed at one end of the side of the cooling shell (6201) and extends into the cooling mounting cavity (621), a limiting plate (6203) is fixed at the other end of the cooling shell (6201), a second rotating hole (6204) is formed on the limiting plate (6203) and extends into the cooling mounting cavity (621), and each end of the cooling ring (63) is provided with a limiting ring (634) extending axially, and the two sets of limiting rings (634) are respectively rotatably inserted into the corresponding first rotating hole (6202) and second limiting ring (634).

9. The grinding apparatus for machining transmission gears according to claim 1, characterized in that, The multi-degree-of-freedom movement module (3) includes a vertical movement module (32) and a horizontal movement module (33). The vertical movement module (32) is fixedly connected to the worktable (1) by bolts. The vertical movement module (32) has a vertical movement stage (34) that can move vertically. The horizontal movement module (33) is fixed to the vertical movement stage (34) by bolts. The free movement part (31) includes a horizontal movement stage that can move along the width direction of the worktable (1). The horizontal movement stage is mounted on the upper horizontal movement module (33) by sliding. The deflection module (4) is fixedly connected to the horizontal movement stage by bolts.

10. The grinding apparatus for machining transmission gears according to claim 9, characterized in that, A length moving module (8) is fixed on the workbench (1). The length moving module (8) has a length moving platform (81) that can move along the length direction of the workbench (1). The gear rotating module (2) is fixedly connected to the length moving platform (81).

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