Clamping tool for machining of large machine tool body
By using a servo motor-driven gear transmission system and an adjustable gear structure, the problem of unstable clamping in large machine tool clamping mechanisms during high-speed rotation is solved, achieving high-precision machining and stable material release, thus improving the stability and safety of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-04-03
AI Technical Summary
Existing clamping mechanisms for large machine tools have difficulty controlling the movement distance of the extrusion plate when rotating at high speeds, resulting in unstable clamping and affecting machining accuracy.
The system employs a servo motor-driven drive gear and driven gear, which work together to convert high-speed rotation into low-speed rotation via synchronous belt transmission. Stable clamping is achieved through a bidirectional screw and extrusion plate, and the adjustable gear system facilitates material release under special circumstances.
It improves processing accuracy and surface quality, ensures that materials can be smoothly released from the clamp under special circumstances, and enhances the stability and safety of the equipment.
Smart Images
Figure CN224073826U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of machine tool technology, specifically a clamping fixture for machining a large machine tool bed. Background Technology
[0002] Large machine tools refer to machine tool equipment with strong processing capabilities and suitable for processing large workpieces. They are widely used in many important fields such as aerospace, shipbuilding, railway transportation, and energy, and are therefore required for processing.
[0003] The clamping mechanism is the core part of the machine tool fixture, used to generate and control the clamping force. For example, the mechanical clamping mechanism generates the clamping force through mechanical components such as screws and nuts. This type of clamping mechanism has a simple structure and stable clamping force.
[0004] In some equipment, the screw is directly driven by a motor, and its torque is directly transmitted to the screw. However, the output end of the motor will rotate at high speed, which will cause the screw to rotate quickly. Since the torque of the motor is fixed, the excessive rotation will cause the extrusion plate to move too fast, making it difficult to control the extrusion plate to move to the appropriate distance. Tightly clamping the clamped object will affect the accuracy of subsequent processing. Therefore, a large machine tool bed processing clamping fixture is proposed to address the above problems. Utility Model Content
[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes a large machine tool bed machining clamping fixture.
[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A large machine tool bed machining clamping fixture of this utility model includes a machine tool body. A first support leg is fixedly connected to the bottom of the outer wall of the machine tool body. A servo motor is fixedly connected inside the first support leg. A drive gear is fixedly connected to the output end of the servo motor. A connecting pulley is fixedly connected to the side wall of the drive gear. Two pairs of first fixing blocks are fixedly connected to the bottom of the outer wall of the machine tool body. A bidirectional screw is rotatably connected to the inner wall of the first fixing block. A pair of extrusion plates are threadedly connected to the outer wall of the bidirectional screw. A driven gear is fixedly connected to one end of the bidirectional screw. A pulley column is rotatably connected to the machine tool body. A connecting gear is fixedly connected to the side wall of the pulley column. The connecting gear and the drive gear are symmetrically arranged. A synchronous belt is used for transmission between the connecting pulley and the pulley column. The driven gear meshes with the drive gear, and the other driven gear meshes with the connecting gear.
[0007] Preferably, a second support leg is fixedly connected to the bottom of the outer side wall of the machine tool body; a third support leg is fixedly connected to the bottom of the outer side wall of the machine tool body; a fourth support leg is fixedly connected to the bottom of the outer side wall of the machine tool body, the third support leg being rotatably connected to a pulley column; a first connecting column is rotatably connected to the inner side wall of the fourth support leg; a first gear is fixedly connected to one end of the first connecting column; a turntable is inserted into the other end; a second connecting column is fixedly connected to the side wall of the pulley column; a second connecting column is rotatably connected to the inner side wall of the fourth support leg; a second gear is fixedly connected to the outer side wall of the second connecting column; the second gear meshes with the first gear.
[0008] Preferably, a second fixing block is fixedly connected to the side wall of the fourth support leg; a fixing plate is slidably contacted to the side wall of the second fixing block; a lever is fixedly connected to the outer side wall of the fixing plate; a limit ring is fixedly connected to the outer side wall of the turntable; and the fixing plate is in contact with the limit ring.
[0009] Preferably, a brush plate is fixedly connected to the side wall of the first support leg; a plurality of brush bristles are fixedly connected to the side wall of the brush plate; and the brush bristles are in contact with the driven gear.
[0010] Preferably, a storage box is fixedly attached to the bottom of the outer side wall of the machine tool body.
[0011] Preferably, a reinforcing block is rotatably connected to the outer wall of the bidirectional screw; the top of the outer wall of the reinforcing block is fixedly connected to the first support leg.
[0012] Preferably, a protective cover is fixed to the top of the outer side wall of the machine tool body; the protective cover is positioned above the driven gear.
[0013] The beneficial effects of this utility model are:
[0014] This utility model provides a clamping fixture for machining the bed of a large machine tool. By cooperating with the driving gear, the connecting pulley and the driven gear, the high-speed rotation of the servo motor is converted into low-speed rotation, while amplifying the output torque. The stable low-speed machining helps to improve machining accuracy and surface quality.
[0015] This utility model provides a clamping fixture for machining the bed of a large machine tool. Through the setting of a first gear and a second connecting column, the operator can still adjust the equipment in special circumstances so that the material above the equipment is not clamped and fixed, and can be smoothly released from the equipment. Attached Figure Description
[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.
[0017] In the attached diagram:
[0018] Figure 1 This is a perspective view of the present invention;
[0019] Figure 2 This is a perspective view of the bidirectional screw in this utility model;
[0020] Figure 3 This is a perspective view of the turntable of this utility model;
[0021] Figure 4 This is a perspective view of the fixing plate in this utility model;
[0022] Figure 5 This is a three-dimensional view of the brush plate in this utility model.
[0023] Legend:
[0024] 1. Machine tool body; 11. First support leg; 12. Servo motor; 13. Drive gear; 14. Connecting pulley; 15. First fixing block; 16. Bidirectional screw; 17. Extrusion plate; 18. Driven gear; 19. Synchronous belt; 10. Connecting gear; 101. Pulley column; 102. Second support leg; 103. Third support leg; 104. Fourth support leg; 2. First connecting column; 21. First gear; 22. Second gear; 23. Turntable; 24. Second connecting column; 3. Second fixing block; 31. Fixing plate; 32. Lever; 33. Limiting ring; 4. Brush plate; 41. Brush bristles; 5. Storage box; 6. Reinforcing block; 7. Protective cover. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0026] Specific implementation examples are given below.
[0027] Please see Figure 1 - Figure 5This utility model provides a large machine tool bed machining clamping fixture, including a machine tool body 1, characterized in that: a first support leg 11 is fixedly connected to the bottom of the outer side wall of the machine tool body 1; a servo motor 12 is fixedly connected inside the first support leg 11; a drive gear 13 is fixedly connected to the output end of the servo motor 12; a connecting pulley 14 is fixedly connected to the side wall of the drive gear 13; two pairs of first fixing blocks 15 are fixedly connected to the bottom of the outer side wall of the machine tool body 1; and a bidirectional screw 16 is rotatably connected to the inner side wall of the first fixing block 15. The bidirectional screw 16 has a pair of extrusion plates 17 threadedly connected to its outer wall; a driven gear 18 is fixedly connected to one end of the bidirectional screw 16; a pulley column 101 is rotatably connected to the machine tool body 1; a connecting gear 10 is fixedly connected to the side wall of the pulley column 101; the connecting gear 10 and the driving gear 13 are symmetrically arranged; a synchronous belt 19 is connected between the connecting pulley 14 and the pulley column 101; the driven gear 18 meshes with the driving gear 13, and the other driven gear 18 meshes with the connecting gear 10. During operation, the sheet metal or other materials to be processed are placed above the machine tool body 1, and the servo motor 12 is started. The output end of the servo motor 12 drives the driving gear 13 and the connecting pulley 14 to rotate, and the driven gear 18, which meshes with the driving gear 13, rotates. At this time, the bidirectional screw 16 rotates, causing the two extrusion plates 17 to move closer together and extrude the material. The connecting pulley 14 drives the pulley column 101 to rotate synchronously via the synchronous belt 19. At this time, the connecting gear 10 and the driving gear 13 rotate in the same direction, causing the two driven gears 18 to rotate in the same direction. This allows multiple extrusion plates 17 to clamp and fix the material synchronously. Through the cooperation between the driving gear 13, the connecting pulley 14, and the driven gears 18, the high-speed rotation of the servo motor 12 is converted into low-speed rotation, while amplifying the output torque. Low-speed stable processing helps to improve processing accuracy and surface quality.
[0028] Furthermore, such as Figure 1 , Figure 3 and Figure 4As shown, a second support leg 102 is fixedly connected to the bottom of the outer side wall of the machine tool body 1; a third support leg 103 is fixedly connected to the bottom of the outer side wall of the machine tool body 1; a fourth support leg 104 is fixedly connected to the bottom of the outer side wall of the machine tool body 1, and the interior of the third support leg 103 is rotatably connected to the pulley column 101; a first connecting column 2 is rotatably connected to the inner side wall of the fourth support leg 104; a first gear 21 is fixedly connected to one end of the first connecting column 2; and a turntable 23 is inserted into the other end; a second connecting column 24 is fixedly connected to the side wall of the pulley column 101; the inner side wall of the fourth support leg 104 is rotatably connected to the second connecting column 24; a second gear 22 is fixedly connected to the outer side wall of the second connecting column 24; and the second gear 22 meshes with the first gear 21. When the equipment is in operation and a power supply problem occurs, the material that has been clamped by the equipment may be difficult to detach. In this case, the turntable 23 can be inserted into the first connecting column 2. Rotating the turntable 23 will cause the first connecting column 2 and the first gear 21 to rotate. The first gear 21 will drive the turntable 23 and the second connecting column 24 to rotate. At this time, the pulley column 101 fixed to the second connecting column 24 will rotate, thereby making a slight adjustment to the equipment so that the material can detach from the equipment. Through the design of the first gear 21 and the second connecting column 24, the staff can still adjust the equipment in special circumstances so that the material above the equipment is not clamped and fixed, thus detaching from the equipment smoothly.
[0029] Furthermore, such as Figure 4 As shown, a second fixing block 3 is fixedly connected to the side wall of the fourth support leg 104; a fixing plate 31 is slidably contacted to the side wall of the second fixing block 3; a lever 32 is fixedly connected to the outer wall of the fixing plate 31; a limit ring 33 is fixedly connected to the outer wall of the turntable 23; and the fixing plate 31 contacts the limit ring 33. Before inserting the turntable 23, the lever 32 is pulled to move the fixing plate 31 upward, and then the turntable 23 is inserted into the first connecting column 2. The lever 32 is then pulled, and the fixing plate 31 will fall down by itself due to gravity, contacting the limit ring 33. The fixing plate 31 fixes the limit ring 33, thereby limiting the turntable 23. The limit ring 33 and the fixing plate 31 increase the stability of the operator during the rotation of the turntable 23, making it easier for the operator to use the equipment.
[0030] Furthermore, such as Figure 2 and Figure 5As shown, a brush plate 4 is fixedly connected to the side wall of the first support leg 11; a plurality of brush bristles 41 are fixedly connected to the side wall of the brush plate 4; the brush bristles 41 are in contact with the driven gear 18. When the equipment is working, the servo motor 12 drives the drive gear 13 to rotate, and the driven gear 18 will rotate in coordination. At this time, the brush bristles 41 are in contact with the side wall of the driven gear 18, and the brush bristles 41 clean the dust and impurities attached to the side wall of the driven gear 18. Through the brush plate 4 and brush bristles 41, the situation of jamming failure between the drive gear 13 and the driven gear 18 caused by dust and impurities can be reduced, and the stability of the equipment can be increased.
[0031] Furthermore, such as Figure 3 As shown, a storage box 5 is fixedly attached to the bottom of the outer side wall of the machine tool body 1. When the equipment is working, the turntable 23 can be placed inside the storage box 5. The storage box 5 facilitates the storage and placement of the turntable 23 by the operator.
[0032] Furthermore, such as Figure 2 As shown, a reinforcing block 6 is rotatably connected to the outer wall of the bidirectional screw 16; the top of the outer wall of the reinforcing block 6 is fixedly connected to the first support leg 11. When the equipment is working, the bidirectional screw 16 will rotate, and the reinforcing block 6 will provide additional support force to the bidirectional screw 16, thereby increasing the stability of the bidirectional screw 16 during rotation.
[0033] Furthermore, such as Figure 1 and Figure 5 As shown, a protective cover 7 is fixedly attached to the top of the outer side wall of the machine tool body 1; the protective cover 7 is positioned above the driven gear 18. When the equipment is working, both driven gears 18 will rotate. At this time, the protective cover 7 can protect the area above the driven gears 18. By setting the protective cover 7, the possibility of workers or materials coming into contact with the driven gears 18 is reduced, and the probability of the rotating driven gears 18 causing injury to materials and personnel is reduced.
[0034] Working principle: During operation, the plate or other material to be processed is placed above the machine tool body 1. The servo motor 12 is started, and the output end of the servo motor 12 drives the drive gear 13 and the connecting pulley 14 to rotate. The driven gear 18 that cooperates with the drive gear 13 will rotate. At this time, the bidirectional screw 16 will rotate, causing the two extrusion plates 17 to move closer to each other and extrude the material.The connecting pulley 14 drives the pulley column 101 to rotate synchronously via the synchronous belt 19. At this time, the connecting gear 10 and the driving gear 13 rotate in the same direction, causing the two driven gears 18 to rotate in the same direction. This, in turn, causes the multiple extrusion plates 17 to clamp and fix the material synchronously. Through the cooperation between the driving gear 13, the connecting pulley 14, and the driven gears 18, the high-speed rotation of the servo motor 12 is converted into low-speed rotation, while amplifying the output torque. Low-speed stable processing helps to improve processing accuracy and surface quality. When the equipment is working, if there is a problem with the power supply, the material already clamped by the equipment may be difficult to detach. In this case, the turntable 23 can be inserted into the first connecting column 2 and rotated. The first connecting column 2 and the first gear 21 rotate, which in turn drives the turntable 23 and the second connecting column 24 to rotate. At this time, the pulley column 101, fixed to the second connecting column 24, rotates, allowing for minor adjustments to the equipment and enabling the material to detach. The design of the first gear 21 and the second connecting column 24 allows operators to adjust the equipment even in special circumstances, preventing the material above from being clamped and allowing it to detach smoothly. Before inserting the turntable 23, pull the lever 32 to move the fixing plate 31 upwards, then insert the turntable 23 into the first connecting column 2. Pulling the lever 32 again causes the fixing plate 31 to fall due to gravity. 1. Contact with the limiting ring 33, the fixing plate 31 fixes the limiting ring 33, thereby limiting the turntable 23. The limiting ring 33 and the fixing plate 31 increase the stability of the operator's rotation of the turntable 23, making it easier for the operator to use the equipment. When the equipment is working, the servo motor 12 drives the drive gear 13 to rotate, and the driven gear 18 will rotate in coordination. At this time, the brush bristles 41 contact the side wall of the driven gear 18, and the brush bristles 41 clean the dust and impurities attached to the side wall of the driven gear 18. Through the brush plate 4 and the brush bristles 41, the situation of jamming failure between the drive gear 13 and the driven gear 18 caused by dust and impurities can be reduced, increasing the efficiency of the equipment. To ensure the stability of the equipment, the turntable 23 can be placed inside the storage box 5 during operation. The storage box 5 facilitates the storage and placement of the turntable 23 by the staff. During operation, the bidirectional screw 16 will rotate, and the reinforcing block 6 will provide additional support for the bidirectional screw 16, thereby increasing the stability of the bidirectional screw 16 during rotation. During operation, both driven gears 18 will rotate, and the protective cover 7 can protect the top of the driven gears 18. The protective cover 7 reduces the possibility of staff or materials coming into contact with the driven gears 18, thus reducing the probability of injury to materials and personnel caused by the rotating driven gears 18.
[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A large machine tool bed machining clamping fixture, comprising a machine tool body (1), characterized in that: A first support leg (11) is fixedly connected to the bottom of the outer side wall of the machine tool body (1); a servo motor (12) is fixedly connected inside the first support leg (11); a drive gear (13) is fixedly connected to the output end of the servo motor (12); a connecting pulley (14) is fixedly connected to the side wall of the drive gear (13); two pairs of first fixing blocks (15) are fixedly connected to the bottom of the outer side wall of the machine tool body (1); a bidirectional screw (16) is rotatably connected to the inner side wall of the first fixing block (15); a pair of extrusion plates are threadedly connected to the outer side wall of the bidirectional screw (16). (17); One end of the bidirectional screw (16) is fixedly connected to a driven gear (18); A pulley column (101) is rotatably connected to the machine tool body (1); A connecting gear (10) is fixedly connected to the side wall of the pulley column (101); The connecting gear (10) and the driving gear (13) are symmetrically arranged; A synchronous belt (19) is connected between the connecting pulley (14) and the pulley column (101); The driven gear (18) meshes with the driving gear (13), and another driven gear (18) meshes with the connecting gear (10).
2. The large machine tool bed machining clamping fixture as described in claim 1, characterized in that: A second support leg (102) is fixedly connected to the bottom of the outer side wall of the machine tool body (1); a third support leg (103) is fixedly connected to the bottom of the outer side wall of the machine tool body (1); a fourth support leg (104) is fixedly connected to the bottom of the outer side wall of the machine tool body (1), and the third support leg (103) is rotatably connected to the pulley column (101); a first connecting column (2) is rotatably connected to the inner side wall of the fourth support leg (104); a first gear (21) is fixedly connected to one end of the first connecting column (2); a turntable (23) is inserted into the other end; a second connecting column (24) is fixedly connected to the side wall of the pulley column (101); a second connecting column (24) is rotatably connected to the inner side wall of the fourth support leg (104); a second gear (22) is fixedly connected to the outer side wall of the second connecting column (24); the second gear (22) meshes with the first gear (21).
3. The large machine tool bed machining clamping fixture as described in claim 2, characterized in that: The fourth support leg (104) has a second fixing block (3) fixed to its side wall; the second fixing block (3) has a fixing plate (31) slidingly contacting its side wall; the fixing plate (31) has a lever (32) fixed to its outer side wall; the turntable (23) has a limit ring (33) fixed to its outer side wall; and the fixing plate (31) is in contact with the limit ring (33).
4. The large machine tool bed machining clamping fixture as described in claim 1, characterized in that: A brush plate (4) is fixedly connected to the side wall of the first support leg (11); a plurality of brush bristles (41) are fixedly connected to the side wall of the brush plate (4); the brush bristles (41) are in contact with the driven gear (18).
5. The large machine tool bed machining clamping fixture as described in claim 1, characterized in that: A storage box (5) is fixedly attached to the bottom of the outer side wall of the machine tool body (1).
6. The large machine tool bed machining clamping fixture as described in claim 1, characterized in that: The outer wall of the bidirectional screw (16) is rotatably connected to a reinforcing block (6); the top of the outer wall of the reinforcing block (6) is fixedly connected to the first support leg (11).
7. The large machine tool bed machining clamping fixture as described in claim 1, characterized in that: A protective cover (7) is fixed to the top of the outer side wall of the machine tool body (1); the protective cover (7) is located above the driven gear (18).