Automobile gear grinding device

Abstract

The invention discloses an automobile gear grinding device and relates to the technical field of gear grinding, the automobile gear grinding device comprises a grinding workbench, a grinding machine and a rotating table, the grinding machine comprises a base fixedly connected to the upper surface of the grinding workbench and a grinding disc cutter sliding on the base of the grinding machine, and the rotating table comprises a fixed table fixedly connected to the upper surface of the grinding workbench. The driving machine is fixed to the side, away from the grinding machine, of the rotating table fixing table, and an adjusting assembly is arranged on the rotating table. By adjusting the clamping stroke of the clamping blocks, it can be guaranteed that the three clamping blocks can effectively abut against and clamp a workpiece after synchronous movement, the problem that the workpiece cannot be effectively contacted and clamped due to the fact that a single clamping block is excessively abraded is solved, and the clamping effect on the workpiece is further guaranteed; and the problem that the depths of ground tooth grooves are different when the workpiece is ground into a gear due to looseness when the workpiece is clamped is solved, and the precision of grinding the workpiece into the gear is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gear grinding, and more particularly, to an automobile gear grinding device. Background Art

[0002] As a core component of the automobile transmission system, automobile gears are widely used in key parts such as gearboxes and differentials. Their tooth profile accuracy and surface quality directly affect transmission efficiency, noise control, and service life. Currently, the production of automobile gears usually uses high-strength alloy steel materials and undergoes multiple processes such as grinding and heat treatment. Among them, grinding is a key link to ensure the geometric accuracy and surface finish of the gear tooth surface. The grinding is mainly carried out by driving a grinding wheel by a grinding machine to grind and form the gear tooth groove. During this process, a three-jaw chuck is used to radially fix the gear workpiece.

[0003] However, when the three-jaw chuck actually clamps the gear workpiece, pressure will be exerted on one side of the workpiece during the grinding process of the gear workpiece, which will in turn cause eccentric pressure on the other jaw, resulting in problems such as extrusion deformation or wear of the jaw. Especially after long-term use, individual jaws cannot effectively fit the workpiece surface due to excessive local wear, resulting in clamping failure, which will cause slight displacement or loosening of the workpiece during the grinding process, resulting in deviation of the grinding depth of the subsequent grinding wheel for the tooth groove, and ultimately causing accuracy defects such as uneven tooth groove depth and increased tooth surface profile error of the gear, which will reduce the smoothness of gear meshing. The existing three-jaw chuck cannot adjust the position of the jaws and can only replace the jaws, increasing the loss during the processing of the gear workpiece and raising the processing cost. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides an automobile gear grinding device.

[0005] The technical solution is as follows: An automobile gear grinding device includes a grinding workbench, a grinding machine, and a rotating table. The grinding machine includes a base fixedly connected to the upper surface of the grinding workbench and a grinding disc cutter sliding on the base of the grinding machine. The rotating table includes a fixed table fixedly connected to the upper surface of the grinding workbench and a driving machine fixed on the side of the fixed table of the rotating table away from the grinding machine. An adjusting component is provided on the rotating table; The adjusting component includes a clamping table fixedly connected to one end of the output shaft of the driving machine of the rotating table passing through the fixed table. Three clamping blocks are slidably connected to the clamping table. Two limiting grooves are respectively opened on each clamping block. A limiting shell is slidably connected between the two limiting grooves on each clamping block. A pushing block is fixedly connected to the side of the limiting shell away from the clamping block. A rotating rod is rotatably connected to the inside of the pushing block. A worm is fixedly connected to the outer wall of the rotating rod. A plurality of worm teeth are fixedly connected to the surface of the clamping block close to the worm.

[0006] Further, the clamping table includes a housing, three bevel gears, and a spiral disk. The pushing block is slidably connected to the spiral disk of the clamping table, and the worm gear meshes with the worm.

[0007] Further, the adjusting assembly further includes two slots opened on the worm. The two slots are symmetrical about the rotating rod. Each of the two slots is inserted with a plug rod. The ends of the two plug rods away from the worm are fixedly connected together with a pull rod. A rotating block is fixedly connected to the outer surface of the pull rod. A first limiting piece is fixedly connected to the surface of the rotating block close to the plug rod. A first fixing frame is fixedly connected to the ends of the pushing block and the limiting housing close to the pull rod. A first spring is fixedly connected inside the first fixing frame. One end of the first spring away from the connection with the first fixing frame is fixedly connected to a pushing shell. The end of the pushing shell away from the first spring is sleeved on the rotating block. A second limiting piece is fixedly connected to the pushing block and the limiting housing.

[0008] Further, the first fixing frame is provided with an opening through which the pull rod can pass. The pushing shell slides inside the first fixing frame. The rotating block rotates inside the pushing shell. The surfaces of the first limiting piece and the second limiting piece close to each other are both subjected to frosting treatment.

[0009] Further, a detection assembly is provided on the clamping table. The detection assembly includes a fixing rod fixedly connected to the top of the clamping table. The end of the fixing rod away from the connection with the clamping table is fixedly connected to an electric push rod. The bottom of the telescopic shaft of the electric push rod is fixedly connected to a second fixing frame. Three sliding grooves are opened on the second fixing frame. A second spring is fixedly connected to the groove wall of each of the three sliding grooves. One end of each of the three second springs away from the connection with the sliding groove is fixedly connected to an electric telescopic rod. A pressure sensor is fixedly connected to the telescopic shaft of each of the three electric telescopic rods. A contact rod is fixedly connected to the outer wall of the telescopic shaft of the top electric telescopic rod.

[0010] Further, the second fixing frame is in a herringbone shape. A contact switch is provided on the lower surface of the end of the contact rod away from the electric telescopic rod.

[0011] Further, the detection assembly further includes a servo motor fixedly connected to the second fixing frame. A guiding frame is fixedly connected to the end of the output shaft of the servo motor passing through the second fixing frame. A vision sensor is fixedly connected to the end of the output shaft of the servo motor.

[0012] Further, the guiding frame is in a herringbone shape. The outer surface of the end of the guiding frame is in contact and fit with the outer surfaces of the three electric telescopic rods. The contact parts of the guiding frame and the electric telescopic rods are all in a hooked shape.

[0013] Thus, the beneficial effects of an automobile gear grinding device in the present invention are as follows: By adjusting the clamping stroke of the clamping blocks, it can be ensured that all three clamping blocks can effectively abut against and clamp the workpiece after synchronous movement, preventing the problem that the workpiece cannot be effectively contacted and clamped due to excessive wear of a single clamping block. Further, the clamping effect on the workpiece is ensured, and the problem of uneven tooth groove depth during grinding of the workpiece into a gear caused by loosening when clamping the workpiece is prevented, improving the accuracy of grinding the workpiece into a gear; Through the further limitation of the first limiting piece and the second limiting piece, it can prevent the worm from rotating due to the jitter during the grinding process of the workpiece, avoiding the situation that the clamping block cannot effectively clamp the workpiece due to the rotation of the worm, and improving the stability of the clamping block clamping the workpiece; Compared with manually shaking to test whether the workpiece is clamped, the electric telescopic rod cooperating with the pressure sensor to abut and detect can effectively detect whether there is slight loosening after the workpiece is clamped, avoiding the situation of insufficient accuracy when grinding the workpiece into a gear due to insufficient manual detection, reducing the defective products generated due to insufficient accuracy in grinding gears, and improving the qualified rate of gear grinding. Brief Description of the Drawings

[0014] Figure 1 It is a three-dimensional schematic diagram of the overall components of the present invention; Figure 2 It is a three-dimensional schematic diagram of components such as the clamping block and the pushing block of the present invention; Figure 3 It is a sectional three-dimensional schematic diagram of components such as the rotating rod, the worm, and the pushing block of the present invention; Figure 4 It is the present invention Figure 3 The enlarged schematic diagram of the component at A in the present invention; Figure 5 It is a sectional three-dimensional schematic diagram of components such as the fixing frame and the pull rod of the present invention; Figure 6 It is the present invention Figure 5 The enlarged schematic diagram of the component at B in the present invention; Figure 7 It is a three-dimensional schematic diagram of components such as the second limiting piece, the worm teeth, and the worm of the present invention; Figure 8 It is a three-dimensional schematic diagram of components such as the pushing shell, the rotating block, and the first limiting piece of the present invention; Figure 9 It is a sectional three-dimensional schematic diagram of components such as the electric push rod and the electric telescopic rod of the present invention; Figure 10 It is the present invention Figure 9 The enlarged schematic diagram of the component at C in the present invention; Figure 11 It is a three-dimensional schematic diagram of components such as the electric telescopic rod, the second spring, and the guiding frame of the present invention.

[0015] Among them, the reference numerals in the present invention are: 1. Grinding workbench; 2. Grinding wheel machine; 3. Rotary table Adjusting assembly: 41. Clamping table; 42. Clamping block; 43. Limit groove; 44. Pushing block; 45. Limit shell; 46. Rotating rod; 47. Worm; 48. Slot; 49. Worm tooth; 410. Plug rod; 411. Pull rod; 412. Rotating block; 413. First limit piece; 414. First fixing frame; 415. First spring; 416. Pushing shell; 417. Second limit piece Detection assembly: 51. Fixed rod; 52. Electric push rod; 53. Second fixing frame; 54. Chute; 55. Second spring; 56. Electric telescopic rod; 57. Servo motor; 58. Guide frame; 59. Contact rod; 510. Pressure sensor; 511. Vision sensor Specific implementation mode

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0017] The embodiments provided by the present invention will be elaborated in detail below: As Figures 1 to 8 shown, an automobile gear grinding device includes a grinding workbench 1, a grinding wheel machine 2, and a rotary table 3. The grinding wheel machine 2 includes a base fixedly connected to the upper surface of the grinding workbench 1, and a grinding disc cutter slidably disposed on the base of the grinding wheel machine 2. The rotary table 3 includes a fixed table fixedly connected to the upper surface of the grinding workbench 1, and a driving machine fixed on the side of the fixed table of the rotary table 3 away from the grinding wheel machine 2. An output shaft of the driving machine of the rotary table 3 passes through one end of the fixed table and is provided with an adjusting assembly for clamping a gear workpiece; The adjusting assembly includes a clamping table 41 fixedly connected to the output shaft of the driving machine of the rotating table 3 passing through one end of the fixed table. The clamping table 41 is composed of a housing, three bevel gears, and a spiral disk. The clamping table 41 is an existing three-jaw chuck and will not be elaborated too much. Three clamping blocks 42 are slidably connected to the clamping table 41. Two limiting grooves 43 are respectively formed on each clamping block 42. A limiting shell 45 is slidably connected between the two limiting grooves 43 on each clamping block 42. A pushing block 44 is fixedly connected to the side of the limiting shell 45 away from the clamping block 42. The pushing block 44 is slidably connected to the spiral disk of the clamping table 41. During the rotation of the spiral disk, it can drive the three pushing blocks 44 to slide close to or away from each other on the clamping table 41. A rotating rod 46 is rotatably connected to the inside of the pushing block 44. A worm 47 is fixedly connected to the outer wall of the rotating rod 46. A plurality of worm teeth 49 arranged in a linear array are fixedly connected to the surface of the clamping block 42 close to the worm 47. The worm teeth 49 are meshed with the worm 47.

[0018] As Figures 2 to 8 shown, the adjusting assembly further includes two slot holes 48 formed on the worm 47. The two slot holes 48 are symmetrically arranged with respect to the rotating rod 46. An inserting rod 410 is inserted into each of the two slot holes 48. The two inserting rods 410 are fixedly connected together at the ends away from the worm 47 to form a pull rod 411. A rotating block 412 is fixedly connected to the outer surface of the pull rod 411. A limiting piece one 413 is fixedly connected to the surface of the rotating block 412 close to the inserting rod 410. A fixing frame one 414 is fixedly connected to the end of the pushing block 44 and the limiting shell 45 close to the pull rod 411. An opening through which the pull rod 411 can pass is formed on the fixing frame one 414. A spring one 415 is fixedly connected to the inside of the fixing frame one 414. One end of the spring one 415 away from the connection with the fixing frame one 414 is fixedly connected to a pushing shell 416. The pushing shell 416 slides inside the fixing frame one 414. The end of the pushing shell 416 away from the spring one 415 is sleeved on the rotating block 412. The rotating block 412 can rotate inside the pushing shell 416. Limiting pieces two 417 corresponding to the position of the limiting piece one 413 are fixedly connected to the pushing block 44 and the limiting shell 45. The surfaces of the limiting piece one 413 and the limiting piece two 417 close to each other are both subjected to frosting treatment to prevent slipping when the limiting piece one 413 and the limiting piece two 417 are in contact.

[0019] The sectional structure of the entire assembled adjusting assembly is as Figure 3 and Figure 5As shown, the part of the limit shell 45 that matches the limit groove 43 is engaged. The inside of the limit shell 45 and the push block 44 is a cavity structure with an opening facing the clamping block 42. The inside of the cavity structure is used to accommodate the rotating rod 46 and the worm 47 outside it. And the worm 47 meshes with the worm teeth 49 provided on the clamping block 42. After installation, the rotating block 412 is located outside the cavity structure composed of the push block 44 and the limit shell 45, and the rotating block 412 is squeezed and fixed in the direction of the limit shell 45 through the extrusion shell 416.

[0020] As Figure 1 , Figures 9 to 11 shown, a detection component for detecting whether the gear is clamped is provided on the clamping table 41. The detection component includes a fixing rod 51 fixedly connected to the top of the clamping table 41 by bolts. One end of the fixing rod 51 far from the connection with the clamping table 41 is fixedly connected with a vertically downward electric push rod 52. The bottom of the telescopic shaft of the electric push rod 52 is fixedly connected with a second fixing frame 53. The second fixing frame 53 is in a herringbone shape. Three sliding grooves 54 are opened on the second fixing frame 53. A second spring 55 is fixedly connected to the groove wall of each of the three sliding grooves 54. One end of each of the three second springs 55 far from the connection with the sliding groove 54 is fixedly connected with an electric telescopic rod 56 perpendicular to the direction of the second fixing frame 53. A pressure sensor 510 is fixedly connected to the telescopic shaft of each of the three electric telescopic rods 56. A contact rod 59 is fixedly connected to the outer wall of the telescopic shaft of the electric telescopic rod 56 closest to the electric push rod 52. A contact switch is arranged on the lower surface of one end of the contact rod 59 far from the electric telescopic rod 56, which is used to control the servo motor 57 to stop rotating after the contact rod 59 touches the workpiece. One end of the output shaft of the servo motor 57 passing through the second fixing frame 53 is fixedly connected with a guiding frame 58. The guiding frame 58 is also in a herringbone shape. The outer surface of the end of the guiding frame 58 is in contact and fits with the outer surfaces of the three electric telescopic rods 56. The fitting parts of the end of the guiding frame 58 and the electric telescopic rod 56 are all in a hooked shape, which is used to prevent slipping when the guiding frame 58 pushes the electric telescopic rod 56 to move to the maximum distance in all directions. A visual sensor 511 is fixedly connected to the end of the output shaft of the servo motor 57.

[0021] Combined with the above preferred embodiments, the following is the entire working process and working principle of the above embodiments: The initial state is: The spring 1 415 is not compressed by the pushing shell 416. The spring 1 415 pushes the rotating block 412 through the pushing shell 416, so that the rotating block 412 drives the limiting piece 1 413 and the limiting piece 2 417 to maintain a fitting state. The telescopic axis of the electric push rod 52 does not extend downward, so that the fixed frame 2 53 is in the highest position. The outer surfaces of the three ends of the guide frame 58 and the three electric telescopic rods 56 are in a state of resistance and pushing. The guide frame 58 then makes the electric telescopic rod 56 in the slide groove 54. The spring 2 55 is in a compressed state, and the telescopic axis of the electric telescopic rod 56 is not extended.

[0022] The working status is: The workpiece to be ground into a gear is placed between the three clamping blocks 42. The staff rotates the bevel gear, which drives the spiral disk to rotate. The spiral disk drives the three propulsion blocks 44 to synchronously converge toward the middle of the clamping table 41. The propulsion block 44 will drive the clamping block 42 to synchronously converge toward the middle of the clamping table 41 through the worm 47 and the worm gear 49. At this time, the clamping blocks 42 that converge toward the middle will clamp the workpiece. Then the staff starts the rotating table 3 through the controller to grind close to the edge of the clamped workpiece. The workpiece is ground through the rotating table 3, and at the same time, the driving machine drives the workpiece of the clamping block 42 on the clamping table 41 to rotate, and the gear is made by grinding the rotating workpiece.

[0023] It should be noted that when clamping the workpiece, the workpiece is composed of two cylinders of different diameters, so that the cross-sectional shape of the workpiece is T-shaped. The clamping position of the workpiece is the small cylinder, which is the non-grinding position, and the large cylinder of the clamped workpiece will protrude from the clamping block 42, which is the grinding position, so as to avoid grinding the clamping block 42 during the grinding of the workpiece by the grinder 2.

[0024] The detection component detects the clamped workpiece: During the process of grinding the workpiece into a gear, the grinding machine 2 needs to apply force to the workpiece to grind it. When the grinding machine 2 grinds one edge of the workpiece, the workpiece will cause eccentric pressure on the clamping block 42 on the other side. Over time, the clamping block 42 will be squeezed and deformed or worn. Since the three clamping blocks 42 clamp the workpiece after synchronous movement, if the clamping block 42 on one side is deformed or worn, the clamping stroke of a single clamping block 42 will be insufficient, resulting in the inability of the worn single clamping block 42 to fit the workpiece, so that the clamping of the three clamping blocks 42 on the workpiece becomes loose.

[0025] It should be noted that: after the other two clamping blocks 42 contact the workpiece, the worn clamping block 42 cannot contact the workpiece after movement, which means that the clamping stroke is insufficient.

[0026] After clamping the above workpiece, the controller controls the telescopic shaft of the electric push rod 52 to extend. The telescopic shaft of the electric push rod 52 drives the second fixed frame 53 to move downward. The second fixed frame 53 drives the three electric telescopic rods 56 to move downward synchronously. Among them, the contact rod 59 on the output shaft of one of the top electric telescopic rods 56 will move downward synchronously. At the same time, the second fixed frame 53 will also drive the servo motor 57 to move synchronously. When the visual sensor 511 on the servo motor 57 recognizes the center position of the workpiece, the visual sensor 511 will control the telescopic shaft of the electric push rod 52 to stop telescoping through the built-in controller. At this time, the middle parts of the guide frame 58 and the second fixed frame 53 will be horizontally concentric with the center position of the workpiece, realizing the centering work of the workpiece. At the same time, the contact rod 59 will move above the workpiece. At this time, the controller controls the output shaft of the servo motor 57 to slowly rotate clockwise. Figure 11 In the clockwise direction, the servo motor 57 will drive the guide frame 58 to slowly rotate clockwise at the same time. After the guide frame 58 rotates clockwise, due to the clockwise rotation of the guide frame 58, the inclined surface on its outer surface will no longer push against the three electric telescopic rods 56. Under the elastic extension of the three second springs 55, the three electric telescopic rods 56 will move synchronously towards the center position of the second fixed frame 53 inside the sliding groove 54. Due to the slow rotation of the guide frame 58, the electric telescopic rod 56 will always remain in contact with the guide frame 58 during movement. Under the limiting action of the guide frame 58, the movement of the three electric telescopic rods 56 is also relatively slow. Among them, when one of the top electric telescopic rods 56 moves, it will drive the contact rod 59 to gradually approach the workpiece. When the contact rod 59 touches the workpiece, the contact switch on the contact rod 59 will touch the workpiece, thereby controlling the output shaft of the servo motor 57 to stop rotating. At this time, the guide frame 58 also stops rotating. The stopped guide frame 58 makes the electric telescopic rod 56 stop moving. At this time, one of the top electric telescopic rods 56 will be aligned with the edge position of the workpiece. Since the three electric telescopic rods 56 move synchronously, the other two electric telescopic rods 56 also remain aligned with the edge position of the workpiece at this time. At this time, the controller controls the telescopic shafts of the electric telescopic rods 56 to extend the same length in sequence. When the telescopic shaft of any one of the electric telescopic rods 56 extends first, the telescopic shaft of the first electric telescopic rod 56 will drive the pressure sensor 510 on it to move towards the workpiece. When the first pressure sensor 510 touches the workpiece and is squeezed by the extension of the telescopic shaft of the electric telescopic rod 56, the first pressure sensor 510 will record the first force value. Immediately afterwards, the second and third pressure sensors 510 touch the workpiece in sequence, and then record the values when the remaining two pressure sensors 510 touch the workpiece.

[0027] If the workpiece is kept in a clamped state by the clamping block 42, the three pressure sensors 510 detect the same value. If the workpiece is not clamped by the clamping block 42, the looseness of the workpiece will cause one of the pressure sensors 510 to contact the workpiece, and its pressure value will be smaller. For example, when the workpiece is loose and deflected, that is, skewed, the value detected by the pressure sensor 510 on the deflected side is smaller than the values ​​detected by the other two pressure sensors 510. In addition, since the extension lengths of the electric telescopic rod 56 are the same, the pressure sensor 510 on the deflected side will not be able to contact the workpiece, and it will be suspended in the air, resulting in a pressure value of zero, thereby accurately identifying whether the clamped workpiece is loose. Compared with manually shaking to test whether the workpiece is clamped, the electric telescopic rod 56 and the pressure sensor 510 can effectively detect whether the workpiece is slightly loose after clamping, thereby avoiding the situation where the workpiece is ground into a gear due to insufficient precision due to inadequate manual detection, reducing defective products caused by insufficient precision of the ground gear, and improving the qualified rate of gear grinding.

[0028] It should be noted that the above is a static looseness detection mechanism, and a dynamic detection mechanism can also be used. By extending the three electric telescopic rods 56 at the same time, and when the telescopic shaft of the electric telescopic rod 56 drives the pressure sensor 510 to contact the workpiece, the controller controls the telescopic shaft of the electric telescopic rod 56 to slowly advance, and records the instantaneous pressure mutation point. Then, after reaching the nominal clamping force of the workpiece, it is maintained for a period of time to detect whether the pressure decays. If the pressure decays, it means that the workpiece clamping is loose. If there is no change in pressure, it means that the workpiece is not clamped loose.

[0029] In addition, the three electric telescopic rods 56 are driven by the elastic reset of the three springs 2 55 to move synchronously toward the center position of the fixed frame 2 53 inside the slide groove 54, and the contact switch on the resistance rod 59 resists the workpiece, thereby achieving the effect of being able to detect workpieces of different sizes, thereby improving the applicability of the device to adapt to the size of the workpiece.

[0030] The adjustment component fine-tunes the clamping position of the clamping block 42: After detecting that the workpiece becomes loose, the staff adjusts the side with a relatively small detected value based on the value recorded by the pressure sensor 510. Before that, the detection component is reset. Then, the staff reversely rotates the bevel gear on the clamping table 41. The bevel gear drives the spiral disk to rotate reversely. The reversely rotating spiral disk drives the pushing block 44 to move outward on the housing of the clamping table 41. The pushing block 44 drives the outer side of the clamping block 42 to move through the worm 47 cooperating with the worm gear 49. At this time, the clamping block 42 no longer clamps the workpiece. At this time, the staff can pull the pull rod 411, so that the pull rod 411 moves to the side away from the pushing block 44. The pull rod 411 drives the pushing shell 416 to move toward the side close to the first spring 415 through the rotating block 412. The pushing shell 416 compresses the first spring 415. At this time, the first limiting piece 413 no longer abuts against the second limiting piece 417. During the movement of the pull rod 411, the insertion rod 410 is also driven to move synchronously in the insertion slot 48. Since the insertion rod 410 and the insertion slot 48 are in a limiting sliding connection, after the horizontal movement of the pull rod 411, the worm 47 can be driven to rotate by rotating the insertion rod 410 in cooperation with the insertion slot 48.

[0031] Then the staff continuously rotates the pull rod 411. The pull rod 411 drives the insertion rod 410 to rotate. The insertion rod 410 makes the worm 47 drive the rotating rod 46 to rotate through the insertion slot 48. When the worm 47 rotates, due to the meshing relationship with the worm gear 49, the worm 47 drives the clamping block 42 to move through the worm gear 49. The clamping block 42 makes a relative sliding with the limiting shell 45 through the limiting groove 43. Since the clamping block 42 to be adjusted is deformed and sunken or worn, it cannot contact or clamp the workpiece. At this time, the movement of the clamping block 42 is to move to the side away from the first fixing frame 414, so that the clamping block 42 protrudes from its original position, that is, to make up for the insufficient clamping stroke mentioned above. By adjusting the clamping stroke of the clamping block 42, it can be ensured that all three clamping blocks 42 can effectively abut against and clamp the workpiece after synchronous movement, preventing the problem that the workpiece cannot be effectively contacted and clamped due to excessive wear of a single clamping block 42, further ensuring the clamping effect on the workpiece, preventing the problem that the depth of the tooth grooves ground when the workpiece is ground into a gear is inconsistent due to loosening when clamping the workpiece, and improving the precision of the workpiece ground into a gear.

[0032] The first limiting piece 413 and the second limiting piece 417 stabilize the adjusted clamping block 42: After the position adjustment of the clamping block 42 is completed, at this time, the staff loosens the pull rod 411. Under the elastic reset action of the first spring 415, the pushing shell 416 moves towards the side close to the second limiting piece 417. The movement of the pushing shell 416 drives the rotating block 412 to move synchronously towards the side close to the second limiting piece 417. The rotating block 412 makes the first limiting piece 413 closely adhere to the second limiting piece 417. Through the close relationship between the first limiting piece 413 and the second limiting piece 417, the rotating block 412 restricts the rotation of the inserting rod 410 through the pull rod 411, making the inserting rod 410 unable to rotate. The inserting rod 410 restricts the worm 47 through the slot 48, making the worm 47 unable to rotate. The non-rotating worm 47 finally restricts the clamping block 42 through the worm teeth 49, making the clamping block 42 unable to move after adjustment. And because the worm 47 itself has a restriction on the lateral movement of the worm teeth 49, plus the further restrictions of the first limiting piece 413, the second limiting piece 417 and the inserting rod 410, it can prevent the worm 47 from rotating due to jitter during the workpiece grinding process, avoiding the situation that the worm 47 rotates and causes the clamping block 42 to be unable to effectively clamp the workpiece, and improving the clamping stability of the clamping block 42 for the workpiece.

[0033] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automobile gear grinding device, comprising a grinding table (1), a grinding wheel machine (2), and a rotating table (3), wherein the grinding wheel machine (2) comprises a base fixedly connected to the upper surface of the grinding table (1), and a grinding disc knife sliding on the base of the grinding wheel machine (2), and the rotating table (3) comprises a fixed table fixedly connected to the upper surface of the grinding table (1), and a driving machine fixed to a side of the fixed table of the rotating table (3) away from the grinding wheel machine (2), characterized in that: An adjustment component is provided on the rotating table (3); The adjustment component comprises a clamping table (41) fixedly connected to one end of the fixed table through which the output shaft of the driving machine of the rotating table (3) passes, three clamping blocks (42) are slidably connected to the clamping table (41), two limiting grooves (43) are respectively provided on each clamping block (42), a limiting shell (45) is slidably connected between the two limiting grooves (43) on each clamping block (42), a pushing block (44) is fixedly connected to the side of the limiting shell (45) away from the clamping block (42), a rotating rod (46) is rotatably connected inside the pushing block (44), a worm (47) is fixedly connected to the outer wall of the rotating rod (46), and a plurality of worm teeth (49) are fixedly connected to the side of the clamping block (42) close to the worm (47).

2. The automotive gear grinding device according to claim 1, characterized in that: The clamping platform (41) comprises a housing, three bevel gears and a spiral disk. The propulsion block (44) is slidably connected to the spiral disk of the clamping platform (41), and the worm gear (49) and the worm (47) are meshed with each other.

3. The automotive gear grinding device according to claim 1, characterized in that: The adjustment component also includes two slots (48) provided on the worm (47), the two slots (48) are symmetrical about the rotating rod (46), an insertion rod (410) is inserted into each of the two slots (48), the ends of the two insertion rods (410) away from the worm (47) are fixedly connected to a pull rod (411), the outer surface of the pull rod (411) is fixedly connected to a rotating block (412), the side of the rotating block (412) close to the insertion rod (410) is fixedly connected to a limiting plate (413), and the pushing block One end of the limiting shell (44) close to the pull rod (411) is fixedly connected to a fixing frame 1 (414), the interior of the fixing frame 1 (414) is fixedly connected to a spring 1 (415), one end of the spring 1 (415) away from the connection with the fixing frame 1 (414) is fixedly connected to a pushing shell (416), one end of the pushing shell (416) away from the spring 1 (415) is sleeved on the rotating block (412), and a limiting plate 2 (417) is fixedly connected to the pushing block (44) and the limiting shell (45).

4. The automotive gear grinding device according to claim 3, characterized in that: The fixing frame 1 (414) is provided with an opening through which the pull rod (411) can pass, the pushing shell (416) slides inside the fixing frame 1 (414), the rotating block (412) rotates inside the pushing shell (416), and the surfaces of the limiting piece 1 (413) and the limiting piece 2 (417) close to each other are both frosted.

5. The automotive gear grinding device according to claim 1, characterized in that: A detection assembly is provided on the clamping platform (41), and the detection assembly includes a fixed rod (51) fixedly connected to the top of the clamping platform (41), an end of the fixed rod (51) away from the connection with the clamping platform (41) is fixedly connected to an electric push rod (52), the bottom of the telescopic shaft of the electric push rod (52) is fixedly connected to a fixed frame 2 (53), three slide grooves (54) are provided on the fixed frame 2 (53), the groove wall of each of the three slide grooves (54) is fixedly connected to a spring 2 (55), the ends of the three springs 2 (55) away from the connection with the slide groove (54) are fixedly connected to an electric telescopic rod (56), the telescopic shafts of the three electric telescopic rods (56) are all fixedly connected to a pressure sensor (510), and the outer wall of the telescopic shaft of the top electric telescopic rod (56) is fixedly connected to a resisting rod (59).

6. The automotive gear grinding device according to claim 5, characterized in that: The second fixing frame (53) is arranged in a herringbone shape, and a contact switch is arranged on the lower surface of one end of the abutment rod (59) away from the electric telescopic rod (56).

7. The automotive gear grinding device according to claim 5, characterized in that: The detection assembly also includes a servo motor (57) fixedly connected to the second fixing frame (53); an end of the output shaft of the servo motor (57) passing through the second fixing frame (53) is fixedly connected to a guide frame (58); and an end of the output shaft of the servo motor (57) is fixedly connected to a visual sensor (511).

8. The automotive gear grinding device according to claim 7, characterized in that: The guide frame (58) is arranged in a herringbone shape, the outer surface of the end of the guide frame (58) is in contact with the outer surfaces of the three electric telescopic rods (56), and the contacting parts of the guide frame (58) and the electric telescopic rods (56) are arranged in a hook shape.

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