Double-grinding-head mechanism for five-axis numerical control tool grinding machine

Abstract

The utility model relates to the technical field of grinding machine double-grinding-head mechanisms, and discloses a double-grinding-head mechanism for a five-axis numerical control tool grinding machine, which comprises a fixing frame, a special-shaped workpiece is arranged on the left side of the fixing frame, and an adaptive mechanism is arranged above the fixing frame; the adaptive mechanism comprises two sliding seats, each sliding seat is slidably connected to the interior of the fixing frame, the inner walls of the two sliding seats are fixedly connected with limiting cylinders, and the outer surface of each limiting cylinder is fixedly connected with a sliding frame. According to the double-grinding-head mechanism for the five-axis numerical control tool grinding machine, the two grinding discs can be staggered by a certain distance, so that two non-perpendicular end faces on a special-shaped workpiece can be ground at the same time, the adaptability of the double-grinding-head mechanism for the five-axis numerical control tool grinding machine is improved, and the double-grinding-head mechanism can be used for grinding the two end faces of the workpiece at the same time; and meanwhile, the double-grinding-head mechanism can better adapt to special end faces on special-shaped workpieces, and the workpiece grinding adaptability of the double-grinding-head mechanism for the five-axis numerical control grinding machine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of double grinding head mechanisms of grinding machines, and specifically relates to a double grinding head mechanism for a five-axis numerically controlled tool grinding machine. Background Technique

[0002] A five-axis numerically controlled grinding machine is a high-precision numerical control machine tool used for grinding workpieces. It can use the five-axis linkage method to grind and process more precise and complex workpieces. In order to further improve the processing efficiency of the five-axis numerically controlled grinding machine for workpieces or meet the special requirements of the same grinding accuracy on both end faces of different workpieces, a double grinding head mechanism is usually used to cooperate with the numerical control grinding machine for grinding and processing. Both ends of the double grinding head mechanism are equipped with grinding heads, and then the same grinding heads on both sides can be used to grind both end faces of the workpiece simultaneously and ensure the consistency of grinding accuracy.

[0003] The utility model with the existing authorization announcement number CN216608315U discloses a double-sided grinding numerical control grinding machine with automatic loading and unloading, including a machine frame. A grinding platform is arranged in the middle of the machine frame in the height direction. A grinding station is arranged on the grinding platform. A square opening is arranged on the grinding platform of the grinding station. Double doors that can be opened downward are hinged on both sides of the square opening. First electric push rods for driving the opening and closing of the double doors are respectively hinged between the back surfaces of the double doors and the machine frame.

[0004] Adopting the above technical solution, the automatic loading, double-sided synchronous grinding, and automatic unloading of workpieces can be completed, and the whole process does not require manual participation, effectively improving the work efficiency and reducing the labor intensity. However, for the above technical solution, when the existing double grinding head mechanism for a five-axis numerically controlled grinding machine is in use, its adaptability is still insufficient, and it cannot better cooperate with the five-axis grinding machine to simultaneously grind the two end faces of some more complex workpieces, affecting the adaptability between the double grinding head mechanism and the five-axis numerically controlled grinding machine, making the double grinding head mechanism and the five-axis numerically controlled grinding machine unable to process different workpieces more comprehensively when used together, and reducing the grinding adaptability of the double grinding head mechanism to workpieces.

[0005] Therefore, those skilled in the art have provided a double grinding head mechanism for a five-axis numerically controlled tool grinding machine to solve the problems raised in the above background technique. Content of the Utility Model

[0006] The purpose of the utility model is to provide a double grinding head mechanism for a five-axis numerically controlled tool grinding machine to solve the problems raised in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A double grinding head mechanism for a five-axis numerically controlled tool grinding machine includes a fixed frame. An irregular workpiece is arranged on the left side of the fixed frame, and an adaptation mechanism is arranged above the fixed frame;

[0009] The adaptation mechanism includes two sliding seats, each of which is slidably connected inside the fixed frame. The inner walls of the two sliding seats are fixedly connected with limiting cylinders. The outer surfaces of each limiting cylinder are fixedly connected with sliding frames. The outer surfaces of each sliding frame are slidably connected with moving frames. The inner walls of each limiting cylinder are fixedly connected with two rotating bearings. The inner walls of the inner rings of each group of rotating bearings are fixedly connected with telescopic cylinders. Each telescopic cylinder is located inside the limiting cylinder. A telescopic plate is slidably connected inside each telescopic cylinder. A screw rod is rotatably connected inside each telescopic cylinder. The inner wall of each telescopic plate is threadedly connected with the outer surface of the screw rod. A rotating column is fixedly connected to the right end of each telescopic cylinder. Each rotating column is rotatably connected to the right side surface of the limiting cylinder. A first bevel gear is fixedly connected to the outer surface of each rotating column. A double-shaft motor is arranged on the right side of the fixed frame. Two telescopic rods are fixedly connected to the two output ends of the double-shaft motor. The telescopic ends of the two telescopic rods are fixedly connected with second bevel gears. Each second bevel gear meshes with the first bevel gear. A connecting cylinder is rotatably connected to the outer surface of each screw rod. The right end of each connecting cylinder is fixedly connected with the left side surface of the telescopic plate. Each connecting cylinder is rotatably connected inside the moving frame. A third bevel gear is fixedly connected to the outer surface of each connecting cylinder. A connecting rod is rotatably connected inside each moving frame. A fourth bevel gear is fixedly connected to the outer surface of each connecting rod. Each fourth bevel gear meshes with the third bevel gear. Grinding discs are fixedly connected to the ends of the two connecting rods close to each other. One side surfaces of the two grinding discs close to each other are respectively in contact with the upper surface and the bottom surface of the special-shaped workpiece.

[0010] As a further scheme of the present invention: mounting frames are fixedly connected to the front and back of the fixed frame. Mounting through grooves are formed in the left side surfaces of each mounting frame.

[0011] As a further scheme of the present invention: two bidirectional telescopic rods are fixedly connected to the inner wall of the fixed frame. The telescopic ends of the two bidirectional telescopic rods are respectively fixedly connected with one side surfaces of the two sliding seats close to each other.

[0012] As a further scheme of the present invention: reinforcing frames are fixedly connected to the front and back of the sliding frame. One side surfaces of each group of reinforcing frames close to each other are fixedly connected with the front and back of the sliding seat. The number of each group of reinforcing frames is two.

[0013] ​As a further solution of the utility model: the right end of each of the screws penetrates through the rotating column and is fixedly connected with a rotating block, each of the screws is rotatably connected with the rotating column, the right side surface of each of the rotating blocks is provided with positioning holes arranged at equal distances, a positioning bolt is clamped inside one of the positioning holes, one end of the positioning bolt close to the rotating block penetrates through one of the positioning holes and extends into the inside of the rotating column, and the positioning bolt is threadedly connected with the rotating column.

[0014] As a further solution of the utility model: the outer surface of the telescopic end of each of the telescopic rods is rotatably connected with a stabilizing frame, and the left side surface of each of the stabilizing frames is fixedly connected with the right side surface of the sliding seat.

[0015] As a further solution of the utility model: the left side surface of the double-shaft motor is fixedly connected with a stabilizing seat, and the left side surface of the stabilizing seat is fixedly connected with the right side surface of the fixing frame.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] By arranging the screw rod in cooperation with the rotating column and the telescopic cylinder, when the screw rod is rotated, the telescopic plate can be driven to slide left and right inside the telescopic cylinder, and then the moving frame can be driven to slide left and right on the sliding frame in cooperation with the connecting cylinder, so that the two grinding discs can be staggered from each other, and then the two non-perpendicular end faces on the special-shaped workpiece can be ground simultaneously, playing a role in increasing the adaptability of the double-grinding-head mechanism for a five-axis CNC grinding machine, enabling it to not only grind the two end faces of the workpiece simultaneously, but also better adapt to the special end faces on the special-shaped workpiece, and improving the grinding adaptability of the double-grinding-head mechanism for a five-axis CNC grinding machine to the workpiece. By arranging the power provided by the double-shaft motor, the telescopic rod can be driven to rotate, and then with the assistance of the first bevel gear, the second bevel gear and the rotating bearing, the rotating column and the telescopic cylinder can be driven to rotate inside the limiting cylinder. At this time, the telescopic plate and the connecting cylinder can cooperate with the third bevel gear and the fourth bevel gear, and the limiting of the connecting cylinder and the connecting rod by the moving frame to drive the two grinding discs to rotate simultaneously, playing a role in enabling the two grinding discs on the double-grinding-head mechanism for a five-axis CNC grinding machine to be staggered from each other and adjusted while ensuring that the two grinding discs can still rotate simultaneously, so that the grinding precision of the two end faces of the special-shaped workpiece is the same. Description of the drawings

[0018] Figure 1 It is a structural schematic diagram of a double-grinding-head mechanism for a five-axis CNC tool grinding machine;

[0019] Figure 2 It is a sectional perspective structural schematic diagram of the fixing frame in a double-grinding-head mechanism for a five-axis CNC tool grinding machine;

[0020] Figure 3Schematic three-dimensional structure diagram of a dual-axis motor in a dual-grinding-head mechanism for a five-axis CNC tool grinder;

[0021] Figure 4 Schematic sectional three-dimensional structure diagram of a limit cylinder in a dual-grinding-head mechanism for a five-axis CNC tool grinder;

[0022] Figure 5 Schematic right-view three-dimensional structure diagram of a rotating column in a dual-grinding-head mechanism for a five-axis CNC tool grinder.

[0023] In the figure: 1. Fixed frame; 2. Special-shaped workpiece; 3. Adaptation mechanism; 301. Sliding seat; 302. Limit cylinder; 303. Sliding frame; 304. Moving frame; 305. Rotating bearing; 306. Telescopic cylinder; 307. Telescopic plate; 308. Screw; 309. Rotating column; 310. First bevel gear; 311. Dual-axis motor; 312. Telescopic rod; 313. Second bevel gear; 314. Connecting cylinder; 315. Third bevel gear; 316. Connecting rod; 317. Fourth bevel gear; 318. Grinding disc; 4. Mounting frame; 5. Mounting through slot; 6. Double-acting cylinder; 7. Reinforcing frame; 8. Rotating block; 9. Positioning hole; 10. Positioning bolt; 11. Stabilizing frame; 12. Stabilizing seat. Detailed implementation method

[0024] Please refer to Figures 1-5 , a dual-grinding-head mechanism for a five-axis CNC tool grinder, including a fixed frame 1. A special-shaped workpiece 2 is arranged on the left side of the fixed frame 1. An adaptation mechanism 3 is arranged above the fixed frame 1. Mounting frames 4 are fixedly connected to the front and back of the fixed frame 1. Mounting through slots 5 are opened on the left side surfaces of each mounting frame 4. The mounting frame 4, in cooperation with the mounting through slot 5 and fixing parts such as bolts, can fix the fixed frame 1 on the five-axis CNC grinder, ensuring the normal progress of the installation and use work of this device.

[0025] The adaptation mechanism 3 includes two sliding seats 301. Each sliding seat 301 is slidably connected inside the fixed frame 1. Limit cylinders 302 are fixedly connected to the inner walls of the two sliding seats 301. Sliding frames 303 are fixedly connected to the outer surfaces of each limit cylinder 302. Moving frames 304 are slidably connected to the outer surfaces of each sliding frame 303. Two double-acting cylinders 6 are fixedly connected to the inner wall of the fixed frame 1. The telescopic ends of the two double-acting cylinders 6 are respectively fixedly connected to one side surface of the two sliding seats 301 that are close to each other. Using the power provided by the double-acting cylinder 6 in cooperation with the fixed frame 1, the two sliding seats 301 can be pulled to approach or move away from each other inside the fixed frame 1, thus ensuring the normal progress of the grinding feed work.

[0026] Two rotating bearings 305 are fixedly connected to the inner wall of each limiting cylinder 302. The inner wall of the inner ring of each group of rotating bearings 305 is fixedly connected with a telescopic cylinder 306. Each telescopic cylinder 306 is located inside the limiting cylinder 302. Reinforcing frames 7 are fixedly connected to the front and back of the sliding frame 303. One side of each group of reinforcing frames 7 close to each other is fixedly connected to the front and back of the sliding seat 301. The number of each group of reinforcing frames 7 is two. The reinforcing frames 7 can increase the load-bearing capacity of the sliding frame 303, making it not easy to bend and deform when the sliding frame 303 bears pressure, and improving the reliability of use of the sliding frame 303.

[0027] A telescopic plate 307 is slidably connected to the inside of each telescopic cylinder 306. A screw rod 308 is rotatably connected to the inside of each telescopic cylinder 306. The inner wall of each telescopic plate 307 is threadedly connected to the outer surface of the screw rod 308. A rotating column 309 is fixedly connected to the right end of each telescopic cylinder 306. Each rotating column 309 is rotatably connected to the right side surface of the limiting cylinder 302. A first bevel gear 310 is fixedly connected to the outer surface of each rotating column 309. The right end of each screw rod 308 penetrates through the rotating column 309 and is fixedly connected with a rotating block 8. Each screw rod 308 is rotatably connected to the rotating column 309. Equally spaced positioning holes 9 are formed in the right side surface of each rotating block 8. A positioning bolt 10 is clamped in the inside of one of the positioning holes 9. One end of the positioning bolt 10 close to the rotating block 8 penetrates through one of the positioning holes 9 and extends into the inside of the rotating column 309. The positioning bolt 10 is threadedly connected to the rotating column 309. The rotating block 8 can be used to facilitate the staff to manually rotate the screw rod 308, increasing the convenience of manually rotating the screw rod 308. By cooperating the positioning hole 9 with the positioning bolt 10 and the rotating block 8, the position of the screw rod 308 after rotational adjustment can be positioned, enabling the screw rod 308 to only rotate along with the rotating column 309 and the telescopic cylinder 306, without relative rotation with the telescopic plate 307, ensuring the stability of the telescopic adjustment of the telescopic plate 307.

[0028] A double-shaft motor 311 is arranged on the right side of the fixing frame 1. Both output ends of the double-shaft motor 311 are fixedly connected with telescopic rods 312. A limiting block is arranged inside the telescopic rod 312, so that the two rods in the telescopic rod 312 can only telescopically move up and down and cannot rotate relative to each other. The telescopic ends of the two telescopic rods 312 are both fixedly connected with second bevel gears 313. Each second bevel gear 313 meshes with the first bevel gear 310. The outer surface of each screw rod 308 is rotatably connected with a connecting cylinder 314. The right end of each connecting cylinder 314 is fixedly connected with the left side surface of the telescopic plate 307. The outer surface of the telescopic end of each telescopic rod 312 is rotatably connected with a stabilizing frame 11. The left side surface of each stabilizing frame 11 is fixedly connected with the right side surface of the sliding seat 301. The stabilizing frame 11 can increase the rotational stability of the telescopic rod 312 without affecting the smooth telescopic movement of the telescopic rod 312, so that the telescopic rod 312 is not prone to excessive swinging and affecting the transmission effect.

[0029] Each connecting cylinder 314 is rotatably connected inside the moving frame 304. A third bevel gear 315 is fixedly connected to the outer surface of each connecting cylinder 314. A connecting rod 316 is rotatably connected inside each moving frame 304. A fourth bevel gear 317 is fixedly connected to the outer surface of each connecting rod 316. Each fourth bevel gear 317 meshes with the third bevel gear 315. The mutually approaching ends of the two connecting rods 316 are both fixedly connected with grinding discs 318. One side surfaces of the two grinding discs 318 approaching each other are respectively in contact with the upper surface and the bottom surface of the special-shaped workpiece 2. The left side surface of the double-shaft motor 311 is fixedly connected with a stabilizing seat 12. The left side surface of the stabilizing seat 12 is fixedly connected with the right side surface of the fixing frame 1. The stabilizing seat 12 can fix the position of the double-shaft motor 311, ensure that the double-shaft motor 311 can drive the telescopic rod 312 to rotate smoothly, and enable the double-shaft motor 311 to operate stably.

[0030] The working principle of the present utility model is as follows: When in use, first connect the dual-axis motor 311 and the double-acting cylinder 6 to an external power supply and a controller. Then, fix the device on a five-axis CNC grinding machine by using the mounting bracket 4 and the mounting through groove 5. Next, use the grinding machine fixture to clamp and fix the position of the special-shaped workpiece 2 from both sides. When it is necessary to make the position between the grinding discs 318 adapt to the two end faces on the special-shaped workpiece 2, when rotating the screw rod 308 by using the rotating block 8, the telescopic plate 307 can be driven to slide left and right inside the telescopic cylinder 306, and then the connecting cylinder 314 can be cooperated to drive the moving frame 304 to slide left and right on the sliding frame 303, so that the two grinding discs 318 can be staggered from each other, and then the two non-perpendicular end faces on the special-shaped workpiece 2 can be ground simultaneously, increasing the adaptability of the double-grinding-head mechanism for a five-axis CNC grinding machine, enabling it to not only grind the two end faces of the workpiece simultaneously, but also better adapt to the special end faces on the special-shaped workpiece 2, effectively improving the grinding adaptability of the double-grinding-head mechanism for a five-axis CNC grinding machine to the workpiece. When it is necessary to grind the special-shaped workpiece 2, the power provided by the dual-axis motor 311 can drive the telescopic rod 312 to rotate. Then, with the assistance of the first bevel gear 310, the second bevel gear 313 and the rotating bearing 305, the rotating column 309 and the telescopic cylinder 306 can be driven to rotate inside the limiting cylinder 302. At this time, the telescopic plate 307 and the connecting cylinder 314 can cooperate with the third bevel gear 315 and the fourth bevel gear 317, as well as the limiting effect of the moving frame 304 on the connecting cylinder 314 and the connecting rod 316, to drive the two grinding discs 318 to rotate simultaneously. While the two grinding discs 318 on the double-grinding-head mechanism for a five-axis CNC grinding machine can be staggered from each other to adjust and adapt to the grinding end faces of the special-shaped workpiece 2, it is ensured that the two grinding discs 318 can still maintain the effect of rotating simultaneously, so that the grinding precision of the two end faces of the special-shaped workpiece 2 can be maintained the same. Finally, when the grinding discs 318 grind the two end faces of the special-shaped workpiece 2, the power provided by the double-acting cylinder 6 can pull the two sliding seats 301 to approach each other inside the fixed frame 1, thereby ensuring the feed amount during end face grinding. And when the sliding seats 301 slide inside the fixed frame 1, they will cooperate with the stabilizing frame 11 to drive the telescopic rod 312 to expand and contract, and thus will not affect the rotation of the second bevel gear 313 driven by the dual-axis motor 311.

[0031] The above-mentioned is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A dual grinding head mechanism for a five-axis CNC tool grinder, comprising a fixed frame (1), characterized in that: A special-shaped workpiece (2) is arranged on the left side of the fixing frame (1), and an adaption mechanism (3) is arranged above the fixing frame (1); The adapting mechanism (3) comprises two sliding seats (301), each of the sliding seats (301) is slidably connected to the interior of the fixed frame (1), the inner walls of the two sliding seats (301) are fixedly connected to a limiting cylinder (302), the outer surface of each limiting cylinder (302) is fixedly connected to a sliding frame (303), the outer surface of each sliding frame (303) is slidably connected to a moving frame (304), the inner wall of each limiting cylinder (302) is fixedly connected to two rotating bearings (305), and the inner wall of the inner ring of each group of rotating bearings (305) is fixedly connected to a telescopic cylinder (306), Each of the telescopic cylinders (306) is located inside the limiting cylinder (302), and a telescopic plate (307) is slidably connected inside each of the telescopic cylinders (306), and a screw (308) is rotatably connected inside each of the telescopic cylinders (306). The inner wall of each of the telescopic plates (307) is threadedly connected to the outer surface of the screw (308). The right end of each of the telescopic cylinders (306) is fixedly connected to a rotating column (309), and each of the rotating columns (309) is rotatably connected to the right side of the limiting cylinder (302). The outer surface of each of the rotating columns (309) is fixedly connected to the first bevel gear (309). 10), a double-axis motor (311) is arranged on the right side of the fixed frame (1), the two output ends of the double-axis motor (311) are fixedly connected to the telescopic rod (312), the telescopic ends of the two telescopic rods (312) are fixedly connected to the second bevel gear (313), each of the second bevel gears (313) is meshed with the first bevel gear (310), the outer surface of each screw rod (308) is rotatably connected to a connecting tube (314), the right end of each connecting tube (314) is fixedly connected to the left side of the telescopic plate (307), and each connecting tube (314) is rotatably connected to the movable frame ( 304), the outer surface of each connecting tube (314) is fixedly connected to the third bevel gear (315), the interior of each movable frame (304) is rotatably connected to a connecting rod (316), the outer surface of each connecting rod (316) is fixedly connected to a fourth bevel gear (317), each fourth bevel gear (317) is meshed with the third bevel gear (315), and the ends of the two connecting rods (316) close to each other are fixedly connected to a grinding disc (318), and the side surfaces of the two grinding discs (318) close to each other are in contact with the upper surface and the bottom surface of the special-shaped workpiece (2) respectively.

2. The double grinding head mechanism for a five-axis CNC tool grinder according to claim 1, characterized in that: The front and back sides of the fixing frame (1) are fixedly connected to mounting frames (4), and a mounting through slot (5) is provided on the left side of each mounting frame (4).

3. The double grinding head mechanism for a five-axis CNC tool grinder according to claim 1, characterized in that: Two bidirectional cylinders (6) are fixedly connected to the inner wall of the fixed frame (1), and the telescopic ends of the two bidirectional cylinders (6) are respectively fixedly connected to the side surfaces of the two sliding seats (301) that are close to each other.

4. The double grinding head mechanism for a five-axis CNC tool grinder according to claim 1, characterized in that: The front and back sides of the sliding frame (303) are fixedly connected with reinforcement frames (7), and the side faces of each group of reinforcement frames (7) close to each other are fixedly connected to the front and back sides of the sliding seat (301), and the number of reinforcement frames (7) in each group is two.

5. The double grinding head mechanism for a five-axis CNC tool grinder according to claim 1, characterized in that: The right end of each of the screw rods (308) passes through the rotating column (309) and is fixedly connected to the rotating block (8). Each of the screw rods (308) is rotatably connected to the rotating column (309). The right side surface of each of the rotating blocks (8) is provided with positioning holes (9) arranged at equal distances. A positioning bolt (10) is clamped inside one of the positioning holes (9). The end of the positioning bolt (10) close to the rotating block (8) passes through one of the positioning holes (9) and extends to the inside of the rotating column (309). The positioning bolt (10) is threadedly connected to the rotating column (309).

6. The double grinding head mechanism for a five-axis CNC tool grinder according to claim 1, characterized in that: The outer surface of the telescopic end of each telescopic rod (312) is rotatably connected to a stabilizing frame (11), and the left side surface of each stabilizing frame (11) is fixedly connected to the right side surface of the sliding seat (301).

7. The double grinding head mechanism for a five-axis CNC tool grinder according to claim 1, characterized in that: The left side surface of the dual-axis motor (311) is fixedly connected to a stabilizing seat (12), and the left side surface of the stabilizing seat (12) is fixedly connected to the right side surface of the fixing frame (1).

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