Numerical control multi-axis drilling device for cylindrical gear end face uniform distribution thread bottom hole

Abstract

This invention discloses a CNC multi-axis drilling device for evenly distributed threaded bottom holes on the end face of a cylindrical gear, belonging to the technical field of drilling devices. It includes a base plate with a fixed column fixedly connected to it, and a drilling assembly mounted on the top of the fixed column; a pushing assembly disposed on the surface of the fixed column, and a processing table mounted on the pushing assembly; and a limiting assembly located on the processing table for fixing the workpiece. This invention has a reasonable structure. The spring force causes the clamping roller to adhere to the inner hole surface of the cylindrical gear, and then the clamping teeth on the clamping block mesh with the cylindrical gear, thereby preventing rotation during drilling of the cylindrical gear.

Description

Technical Field

[0001] This invention relates to the field of drilling equipment technology, and in particular to a CNC multi-axis drilling device for uniformly distributed threaded bottom holes on the end face of a cylindrical gear. Background Technology

[0002] Cylindrical gears are core components in gearbox and reducer transmission systems. Some cylindrical gears require multiple sets of evenly distributed threaded holes on their end faces for bolting and assembly between the gear and flanges or housing components. The diameter, depth, and circumferential distribution of these threaded holes directly determine the gear assembly accuracy and serve as a crucial machining benchmark for subsequent assembly processes. After pre-processing such as turning, hobbing, and heat treatment, the evenly distributed threaded holes on the end face need to be drilled.

[0003] A rapid drilling device for machining automotive cylindrical gears, disclosed in CN118342003A, includes a base plate. An installation structure is fixedly connected to the upper surface of the base plate. Drive structures are located on the left and right sides of the installation structure. A support structure is fixedly connected to the middle of the upper surface of the inner cavity of the installation structure. Adjustment structures are located on the front and rear end faces of the stabilizing structure. The support structure on the upper surface of the base plate allows for the installation and placement of the stabilizing structure during use. A limiting groove, in conjunction with the limiting structure, fixes the rotation angle of the stabilizing structure after rotation. The limiting structure in the support structure allows for adjustment of the relative position of the limiting block through the extension and retraction of the limiting spring during use. The locking of the limiting block with the limiting groove then fixes the rotated stabilizing structure, thus enabling the placement of the cylindrical gear during use. Finally, a rotating rod is used to drill holes on both sides of the cylindrical gear during operation.

[0004] There are still some problems with drilling existing cylindrical gears.

[0005] When using multi-axis drilling equipment to drill the threaded bottom hole on the end face of a cylindrical gear, the gear workpiece needs to be reliably clamped and positioned to ensure the indexing accuracy of the evenly distributed holes on the end face. The outer circumference of the cylindrical gear is covered with tooth structure, and the tooth part has high hardness and thin tooth wall, resulting in poor resistance to extrusion and impact. Traditional clamping methods mostly directly clamp and position the outer cylindrical surface of the gear, with the clamping component directly contacting the outer circumference of the gear teeth. The clamping force is applied to the tooth surface. Under the conditions of workpiece clamping and locking, drilling and cutting vibration, it is very easy to cause defects such as tooth surface crushing, tooth corner chipping, and tooth deformation. Summary of the Invention

[0006] The purpose of this invention is to provide a CNC multi-axis drilling device for evenly distributed threaded bottom holes on the end face of a cylindrical gear. This device achieves the function of using the elastic force of a spring to make the clamping roller fit against the inner hole surface of the cylindrical gear, and then using the clamping teeth on the clamping block to mesh with the cylindrical gear, thereby avoiding rotation during the drilling of the cylindrical gear.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a CNC multi-axis drilling device for evenly distributed threaded bottom holes on the end face of a cylindrical gear, comprising: a base plate, on which a fixed column is fixedly connected, and a drilling assembly is installed at the top of the fixed column; a pushing assembly disposed on the surface of the fixed column, and a processing table disposed on the pushing assembly; and a limiting assembly located on the processing table for fixing the workpiece.

[0008] Preferably, the pushing component includes a frame disposed on the fixed column, a pair of first pulleys are rotatably connected inside the frame, the pair of first pulleys are tactilely connected to the outer surface of the fixed column, a pair of brackets are fixedly connected to the processing table, a pair of second pulleys are rotatably connected to one end of the pair of brackets, and the second pulleys are tactilely connected to the outer surface of the fixed column.

[0009] Preferably, a base rod is fixedly connected to the frame, and a first arm plate is rotatably connected to both ends of the base rod. One end of the first arm plate is rotatably connected to a linkage rod, and a pair of second arm plates are rotatably connected to the linkage rod. One end of the pair of second arm plates is rotatably connected to a hinge seat, and the hinge seat is fixedly connected to the base plate.

[0010] Preferably, an equipment box is fixedly mounted on the base plate, and sliding grooves are provided on both sides of the equipment box. A threaded rod is rotatably connected inside the equipment box. One end of the threaded rod extends to the outside of the equipment box and is fixedly connected to the output end of the servo motor. The servo motor is fixedly mounted on the equipment box. A movable block is threadedly connected to the threaded rod. A shaft pin is fixedly connected to both sides of the movable block. One end of the shaft pin extends to the outside of the equipment box through the sliding groove and is rotatably connected to the push plate. One end of the push plate is rotatably connected to the linkage rod.

[0011] Preferably, the limiting component includes a carrier plate fixedly installed on the top of the processing table, a through groove is provided in the middle of the carrier plate, a crossbar is fixedly connected to the inner wall of the carrier plate, a sleeve block is slidably connected to the crossbar, a spring is sleeved on the crossbar, and the two ends of the spring are fixedly connected to the carrier plate and the sleeve block respectively.

[0012] Preferably, a connecting rod is fixedly connected to the sleeve block, the top end of the connecting rod passes through the through groove and is fixedly connected to the bracket, a pair of clamping rollers are rotatably connected to the bracket, both ends of the bracket are fixedly connected to the slider, the slider is slidably connected to the guide rail, and the guide rail is fixedly installed on the top surface of the carrying plate.

[0013] Preferably, a cylinder is fixedly installed inside the carrying plate, the telescopic end of the cylinder is fixedly connected to the driven plate, the driven plate is slidably connected to the positioning rod, one end of the positioning rod is fixedly connected to the shaft seat, the shaft seat is fixedly installed on the carrying plate, the top end of the driven plate is fixedly connected to the clamping block, and the clamping block is fixedly installed with locking teeth.

[0014] Preferably, the drilling assembly includes a frame, a rotating rod, a third pulley, a second transmission belt, a fourth pulley, a drive rod, and a drive motor; the frame is fixedly mounted on the top of the fixed column, the rotating rod is rotatably connected to the frame, the top of the rotating rod is fixedly connected to the third pulley, the third pulley is fitted with the second transmission belt, the other end of the second transmission belt is fitted onto the fourth pulley, the fourth pulley is fixedly connected to the drive rod, the bottom end of the drive rod is fixedly connected to the output end of the drive motor, and the drive motor is fixedly mounted on the frame.

[0015] Preferably, the bottom end of the rotating rod is rotatably connected to the housing, and the housing is fixedly installed on the frame by a connector.

[0016] Preferably, a first geared disc is provided inside the housing. The first geared disc is fixedly connected to the bottom end of the rotating rod. The first geared disc meshes with a second geared disc. The second geared disc is fixedly connected to the driven rod. The driven rod is rotatably connected to the housing. A drill rod is fixedly installed at the bottom end of the driven rod through a connector.

[0017] In summary, the present invention has the following beneficial effects:

[0018] 1. The present invention uses a servo motor to drive the threaded rod to rotate, which in turn drives the moving block to move axially. Then, through the shaft pin, push plate, and linkage rod, a linkage transmission structure is formed with the first arm plate and the second arm plate. This structure can stably and accurately complete the lifting and lowering adjustment of the frame and the processing table. The transmission is tight and the adjustment accuracy is high, which can accurately control the processing feed position of the workpiece. At the same time, the first pulley and the second pulley roll along the outer wall of the fixed column, which plays a good guiding and limiting role in the lifting and lowering process of the processing table, effectively reducing lifting and lowering sway and deviation, improving the stability and smoothness of the movement of the processing table, ensuring the positioning accuracy and processing consistency of subsequent drilling processing, and effectively improving the product processing quality.

[0019] 2. This invention features an inner hole clamping structure consisting of a bracket, clamping roller, connecting rod, sleeve block, crossbar, and spring. This structure, in conjunction with a cylinder, driven plate, positioning rod, clamping block, and locking teeth, completes the composite positioning of the workpiece. Pulling the clamping roller causes the sleeve block to slide along the crossbar and stretch the spring, facilitating the insertion of the clamping roller into the gear's inner hole. The spring's rebound causes the clamping roller to achieve clamping and limiting from the inner hole. The cylinder then drives the clamping block to move, causing the locking teeth to mesh with the external teeth of the cylindrical gear, achieving circumferential locking of the gear. This prevents damage to the gear's external tooth surface during clamping, effectively ensuring the gear's indexing position accuracy and avoiding tooth collisions and damage during clamping.

[0020] 3. This invention drives multiple sets of drill rods to rotate synchronously via a drive motor, drive rod, fourth pulley, second transmission belt, third pulley, rotating rod, first gear plate, second gear plate, and driven rod. The drive motor drives the rotating rod to rotate via belt drive. Relying on the meshing transmission between the first gear plate and multiple sets of second gear plates, the driven rods and drill rods are rotated synchronously. This allows for the drilling of multiple threaded bottom holes on the end face of a cylindrical gear in one operation. The rotational speed of each drill rod is highly synchronized, and the hole position processing consistency is high, effectively improving the drilling efficiency of evenly distributed bottom holes on the end face of a cylindrical gear. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the base plate;

[0023] Figure 2 This is a schematic diagram of the side view of the base plate structure;

[0024] Figure 3 This is a schematic diagram of the frame's three-dimensional structure;

[0025] Figure 4 This is a schematic diagram of a partial cross-sectional three-dimensional structure of the first pulley;

[0026] Figure 5 A schematic diagram of the machining table from a bottom-up view of its three-dimensional structure;

[0027] Figure 6 This is a schematic diagram of a partial cross-sectional three-dimensional structure of the loading plate.

[0028] Figure 7 for Figure 2 Enlarged structural diagram at point A in the middle;

[0029] Figure 8 for Figure 2 Enlarged structural diagram at point B.

[0030] In the diagram: 100, base plate; 101, fixed column; 102, processing table; 200, pushing assembly; 201, frame; 202, first pulley; 203, bracket; 204, second pulley; 205, bottom rod; 206, first arm plate; 207, linkage rod; 208, second arm plate; 209, hinge seat; 210, equipment box; 211, slide rail; 212, threaded rod; 213, servo motor; 214, moving block; 215, shaft pin; 216, push plate; 220, carrying plate; 221, through groove; 222, crossbar; 223, sleeve block; 224, spring; 225. 226. Connecting rod; 227. Bracket; 228. Clamping roller; 229. Slider; 230. Guide rail; 231. Cylinder; 232. Driven plate; 233. Positioning rod; 233. Shaft seat; 235. Clamping block; 236. Clamping tooth; 300. Drilling assembly; 301. Frame; 302. Rotating rod; 303. Third pulley; 304. Second transmission belt; 305. Fourth pulley; 306. Drive rod; 307. Drive motor; 308. Housing; 309. Connecting piece; 310. First gear plate; 311. Driven rod; 312. Second gear plate; 313. Connecting joint; 314. Drill rod. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example: Reference Figures 1 to 8 The CNC multi-axis drilling device for evenly distributed threaded bottom holes on the end face of a cylindrical gear, as shown, includes a base plate 100, a fixed column 101 fixedly connected to the base plate 100, a drilling assembly 300 mounted on the top of the fixed column 101; a pushing assembly 200 disposed on the surface of the fixed column 101, and a processing table 102 disposed on the pushing assembly 200; and a limiting assembly located on the processing table 102 for fixing the workpiece.

[0033] It should be noted that the vertical position of the processing table 102 is adjusted by the push component 200, and then the drill rod 314 on the drilling component 300 is used to drill the cylindrical gear. The servo motor 213 and the drive motor 307 are electrically connected to the control unit through wires. The specific working principle is existing technology and will not be described in detail here.

[0034] In one embodiment of this invention, the pushing component 200 includes a frame 201 mounted on a fixed post 101. A pair of first pulleys 202 are rotatably connected inside the frame 201, and the pair of first pulleys 202 are rolled onto the outer surface of the fixed post 101. A pair of supports 203 are fixedly connected to the processing table 102. One end of each support 203 is rotatably connected to a second pulley 204, which is rolled onto the outer surface of the fixed post 101. A bottom rod 205 is fixedly connected to the frame 201. Both ends of the bottom rod 205 are rotatably connected to first arm plates 206. One end of each first arm plate 206 is rotatably connected to a linkage rod 207. A pair of second arm plates 208 are rotatably connected to the linkage rod 207. One end of the two-arm plate 208 is rotatably connected to the hinge seat 209, which is fixedly connected to the base plate 100. The base plate 100 is fixedly provided with an equipment box 210. Slide grooves 211 are provided on both sides of the equipment box 210. A threaded rod 212 is rotatably connected inside the equipment box 210. One end of the threaded rod 212 extends to the outside of the equipment box 210 and is fixedly connected to the output end of the servo motor 213. The servo motor 213 is fixedly mounted on the equipment box 210. A moving block 214 is threadedly connected to the threaded rod 212. A shaft pin 215 is fixedly connected to both sides of the moving block 214. One end of the shaft pin 215 extends to the outside of the equipment box 210 through the slide groove 211 and is rotatably connected to the push plate 216. One end of the push plate 216 is rotatably connected to the linkage rod 207.

[0035] Specifically, when the processing table 102 moves upward, the servo motor 213 causes the threaded rod 212 to rotate. A moving block 214 is threaded onto the threaded rod 212. The rotation of the threaded rod 212 causes the moving block 214 to move, which facilitates the movement of the push plate 216 by the shaft pin 215 on the moving block 214. The movement of the push plate 216 pushes the linkage rod 207 to move, thereby pushing the processing table 102 upward as a whole through the first arm plate 206 and the second arm plate 208. The movement of the processing table 102 causes the first pulley 202 on the frame 201 to slide against the surface of the fixed column 101. At the same time, the second pulley 204 on the bracket 203 also slides against the surface of the fixed column 101, increasing the stability of the overall movement of the processing table 102.

[0036] In one embodiment of this invention, the limiting component includes a loading plate 220 fixedly installed on the top of the processing table 102. A through groove 221 is provided in the middle of the loading plate 220. A crossbar 222 is fixedly connected to the inner wall of the loading plate 220. A sleeve block 223 is slidably connected to the crossbar 222. A spring 224 is sleeved on the crossbar 222. Both ends of the spring 224 are fixedly connected to the loading plate 220 and the sleeve block 223, respectively. A connecting rod 225 is fixedly connected to the sleeve block 223. The top end of the connecting rod 225 passes through the through groove 221 and is fixedly connected to a bracket 226. A rotatable connection is provided on the bracket 226. There is a pair of clamping rollers 227. The two ends of the bracket 226 are fixedly connected to the slider 228. The slider 228 is slidably connected to the guide rail 229. The guide rail 229 is fixedly installed on the top surface of the carrying plate 220. A cylinder 230 is fixedly installed inside the carrying plate 220. The telescopic end of the cylinder 230 is fixedly connected to the driven plate 231. The driven plate 231 is slidably connected to the positioning rod 232. One end of the positioning rod 232 is fixedly connected to the shaft seat 233. The shaft seat 233 is fixedly installed on the carrying plate 220. The top end of the driven plate 231 is fixedly connected to the clamping block 235. A locking tooth 236 is fixedly installed on the clamping block 235.

[0037] Specifically, the clamping roller 227 on the bracket 226 is pulled. The movement of the bracket 226 drives the sleeve block 223 to slide on the crossbar 222 through the connecting rod 225, which facilitates the stretching of the spring 224. The inner hole of the cylindrical gear is placed on the periphery of the clamping roller 227. Then, the clamping roller 227 is attached to the inner hole surface of the cylindrical gear by the elastic force of the spring 224. Then, the cylinder 230 pulls the driven plate 231 to slide on the positioning rod 232. Then, the driven plate 231 drives the clamping block 235 to move. The movement of the clamping block 235 causes the locking teeth 236 to mesh with the outer teeth of the cylindrical gear, which facilitates the fixing of the position of the cylindrical gear.

[0038] In one embodiment of this invention, the drilling assembly 300 includes a frame 301, a rotating rod 302, a third pulley 303, a second transmission belt 304, a fourth pulley 305, a drive rod 306, and a drive motor 307. The frame 301 is fixedly mounted on the top of the fixed column 101. The rotating rod 302 is rotatably connected to the frame 301. The top of the rotating rod 302 is fixedly connected to the third pulley 303. The second transmission belt 304 is sleeved on the third pulley 303. The other end of the second transmission belt 304 is sleeved on the fourth pulley 305. The fourth pulley 305 is fixedly connected to the drive rod 306. The drive rod 306... The bottom end of 6 is fixedly connected to the output end of the drive motor 307. The drive motor 307 is fixedly mounted on the frame 301. The bottom end of the rotating rod 302 is rotatably connected to the housing 308. The housing 308 is fixedly mounted on the frame 301 through the connector 309. The housing 308 is provided with a first gear 310. The first gear 310 is fixedly connected to the bottom end of the rotating rod 302. The first gear 310 and the second gear 312 mesh with each other. The second gear 312 is fixedly connected to the driven rod 311. The driven rod 311 is rotatably connected to the housing 308. The bottom end of the driven rod 311 is fixedly mounted with a drill rod 314 through a connector 313.

[0039] Specifically, the operation of the drive motor 307 causes the fourth pulley 305 on the drive rod 306 to rotate. The rotation of the fourth pulley 305 drives the third pulley 303 to rotate through the second transmission belt 304, thereby facilitating the rotation of the rotating rod 302 on the third pulley 303. The rotation of the rotating rod 302 drives the first gear disk 310 inside the housing 308 to rotate. The first gear disk 310 and the second gear disk 312 mesh with each other. The second gear disk 312 is fixedly connected to the driven rod 311. The rotation of the first gear disk 310 drives the driven rod 311 to rotate through the second gear disk 312. Several sets of driven rods 311 are provided, and a drill rod 314 is fixedly installed at the bottom end of the driven rod 311 through the connector 313. The drill rod 314 drills a hole in the end face of the cylindrical gear through the driven rod 311.

[0040] The working principle of this invention is as follows: The servo motor 213 drives the threaded rod 212 to rotate, which in turn drives the moving block 214 to move along the axial direction of the threaded rod 212. The moving block 214 pushes the push plate 216 to move through the shaft pin 215. The push plate 216 drives the linkage rod 207 to move. The linkage rod 207 drives the first arm plate 206 and the second arm plate 208 to move in linkage, lifting the processing table 102 on the frame 201. The first pulley 202 on the frame 201 and the second pulley 204 on the bracket 203 roll along the outer wall of the fixed column 101 to ensure that the lifting and lowering movement of the processing table 102 is stable.

[0041] When clamping the cylindrical gear workpiece, pull the bracket 226, the connecting rod 225 drives the sleeve block 223 to slide along the cross bar 222 and stretch the spring 224, so that the inner hole of the cylindrical gear is placed on the outside of the clamping roller 227. After releasing the bracket 226, the spring 224 rebounds and makes the clamping roller 227 stick tightly to the inner hole of the cylindrical gear. The cylinder 230 drives the driven plate 231 to slide along the positioning rod 232. The driven plate 231 drives the clamping block 235 to move. The locking teeth 236 on the clamping block 235 mesh with the outer teeth of the cylindrical gear to complete the circumferential positioning and locking of the workpiece.

[0042] During drilling, the drive motor 307 drives the drive rod 306 and the fourth pulley 305 to rotate. The fourth pulley 305 drives the third pulley 303 and the rotating rod 302 to rotate synchronously via the second transmission belt 304. The rotating rod 302 drives the first gear disc 310 inside the housing 308 to rotate. The first gear disc 310 meshes with the second gear disc 312, which drives the driven rod 311 to rotate. The driven rod 311 drives the drill rod 314 to rotate at high speed via the coupling 313. The pushing component 200 drives the positioned cylindrical gear workpiece to continue to move upward. The drill rod 314 contacts the end face of the workpiece and processes multiple sets of evenly distributed threaded bottom holes on the end face of the cylindrical gear in one go.

[0043] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A CNC multi-axis drilling device for evenly distributing threaded bottom holes on the end face of a cylindrical gear, characterized in that, include: A base plate (100) is fixedly connected to a fixing post (101), and a drilling assembly (300) is installed at the top of the fixing post (101). A push component (200) is disposed on the surface of the fixed column (101), and a processing table (102) is disposed on the push component (200). A limiting component is located on the processing table (102) and is used to fix the workpiece.

2. The CNC multi-axis drilling device for evenly distributed threaded bottom holes on the end face of a cylindrical gear according to claim 1, characterized in that: The pushing component (200) includes a frame (201) disposed on the fixed column (101). A pair of first pulleys (202) are rotatably connected inside the frame (201). The pair of first pulleys (202) are tumbledly connected to the outer surface of the fixed column (101). A pair of brackets (203) are fixedly connected to the processing table (102). A second pulley (204) is rotatably connected to one end of the pair of brackets (203). The second pulley (204) is tumbledly connected to the outer surface of the fixed column (101).

3. The CNC multi-axis drilling device for evenly distributed threaded bottom holes on the end face of a cylindrical gear according to claim 2, characterized in that: A base rod (205) is fixedly connected to the frame (201). Both ends of the base rod (205) are rotatably connected to a first arm plate (206). One end of the first arm plate (206) is rotatably connected to a linkage rod (207). A pair of second arm plates (208) are rotatably connected to the linkage rod (207). One end of the pair of second arm plates (208) is rotatably connected to a hinge seat (209). The hinge seat (209) is fixedly connected to the base plate (100).

4. The CNC multi-axis drilling device for evenly distributed threaded bottom holes on the end face of a cylindrical gear according to claim 3, characterized in that: The base plate (100) is fixedly provided with an equipment box (210). The equipment box (210) has sliding grooves (211) on both sides. The equipment box (210) is rotatably connected with a threaded rod (212). One end of the threaded rod (212) extends to the outside of the equipment box (210) and is fixedly connected to the output end of a servo motor (213). The servo motor (213) is fixedly mounted on the equipment box (210). A moving block (214) is threadedly connected to the threaded rod (212). A shaft pin (215) is fixedly connected to both sides of the moving block (214). One end of the shaft pin (215) extends through the sliding groove (211) to the outside of the equipment box (210) and is rotatably connected to a push plate (216). One end of the push plate (216) is rotatably connected to the linkage rod (207).

5. The CNC multi-axis drilling device for evenly distributed threaded bottom holes on the end face of a cylindrical gear according to claim 1, characterized in that: The limiting component includes a loading plate (220) fixedly installed on the top of the processing table (102). A through groove (221) is provided in the middle of the loading plate (220). A crossbar (222) is fixedly connected to the inner wall of the loading plate (220). A sleeve block (223) is slidably connected to the crossbar (222). A spring (224) is sleeved on the crossbar (222). The two ends of the spring (224) are fixedly connected to the loading plate (220) and the sleeve block (223) respectively.

6. The CNC multi-axis drilling device for evenly distributed threaded bottom holes on the end face of a cylindrical gear according to claim 5, characterized in that: A connecting rod (225) is fixedly connected to the sleeve block (223). The top end of the connecting rod (225) passes through the through groove (221) and is fixedly connected to the bracket (226). A pair of clamping rollers (227) are rotatably connected to the bracket (226). The two ends of the bracket (226) are fixedly connected to the slider (228). The slider (228) is slidably connected to the guide rail (229). The guide rail (229) is fixedly installed on the top surface of the carrier plate (220).

7. The CNC multi-axis drilling device for evenly distributed threaded bottom holes on the end face of a cylindrical gear according to claim 6, characterized in that: A cylinder (230) is fixedly installed inside the loading plate (220). The telescopic end of the cylinder (230) is fixedly connected to the driven plate (231). The driven plate (231) is slidably connected to the positioning rod (232). One end of the positioning rod (232) is fixedly connected to the shaft seat (233). The shaft seat (233) is fixedly installed on the loading plate (220). The top end of the driven plate (231) is fixedly connected to the clamping block (235). A clamping tooth (236) is fixedly installed on the clamping block (235).

8. The CNC multi-axis drilling device for evenly distributed threaded bottom holes on the end face of a cylindrical gear according to claim 1, characterized in that: The drilling assembly (300) includes a frame (301), a rotating rod (302), a third pulley (303), a second transmission belt (304), a fourth pulley (305), a drive rod (306), and a drive motor (307). The frame (301) is fixedly installed on the top of the fixed column (101). A rotating rod (302) is rotatably connected to the frame (301). A third pulley (303) is fixedly connected to the top of the rotating rod (302). A second transmission belt (304) is sleeved on the third pulley (303). The other end of the second transmission belt (304) is sleeved on the fourth pulley (305). The fourth pulley (305) is fixedly connected to the drive rod (306). The bottom end of the drive rod (306) is fixedly connected to the output end of the drive motor (307). The drive motor (307) is fixedly installed on the frame (301).

9. A CNC multi-axis drilling device for evenly distributed threaded bottom holes on the end face of a cylindrical gear according to claim 8, characterized in that: The bottom end of the rotating rod (302) is rotatably connected to the housing (308), and the housing (308) is fixedly installed on the frame (301) by a connector (309).

10. A CNC multi-axis drilling device for evenly distributed threaded bottom holes on the end face of a cylindrical gear according to claim 9, characterized in that: The housing (308) is provided with a first gear disc (310), which is fixedly connected to the bottom end of the rotating rod (302). The first gear disc (310) meshes with the second gear disc (312). The second gear disc (312) is fixedly connected to the driven rod (311), which is rotatably connected to the housing (308). The bottom end of the driven rod (311) is fixedly installed with a drill rod (314) through a connector (313).

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