Wear-resistant machine tool chuck

Abstract

The utility model discloses a wear-resistant machine tool chuck, which belongs to the technical field of machine tool chucks, and comprises a chuck base, a fixing plate is connected above the chuck base, the chuck base is hollow, a hydraulic push rod is fixedly mounted in the chuck base, the movable end of the hydraulic push rod is connected with a connecting plate, and the connecting plate is connected with the fixed plate. A sliding block is connected to the connecting plate, and a hinge rod is rotationally connected to the connecting plate. According to the wear-resistant machine tool chuck, a worker pulls a sliding rod to move upwards through a pull ring, so that an embedding block is separated from a fixing hole, then a contact block makes contact with a workpiece, all faces of the workpiece push the contact block during contact, the contact block is promoted to slide into a hollow plate, at the moment, a rack slides together, a gear is pushed to rotate, and then the sliding rod is pressed downwards; the embedded block is promoted to be inserted into the fixing hole to fix the gear, the gear and the rack are prevented from moving, and therefore the contact block adapts to all faces of the workpiece, the clamping jaw clamp does not need to be replaced frequently, and applicability and machining efficiency are improved.

Description

Technical Field

[0001] This utility model belongs to the field of machine tool chuck technology, specifically a wear-resistant machine tool chuck. Background Technology

[0002] A machine tool chuck is a mechanical device used to clamp workpieces on a machine tool. It uses the radial movement of movable jaws evenly distributed on the chuck body to clamp and position the workpiece. Chucks are widely used in lathes, milling machines, grinding machines and other equipment, and are an indispensable part of machining.

[0003] Traditional chuck jaws are basically a single piece of metal, which results in low adaptability to workpieces of different shapes. Frequent replacement of jaw fixtures is required for different workpiece shapes, which affects processing efficiency. In addition, the surface of the chuck is prone to wear after long-term use. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a wear-resistant machine tool chuck, which solves the problem that traditional chucks have low adaptability to workpieces of different shapes and require frequent replacement of chuck clamps for workpieces of different shapes, thus affecting processing efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant machine tool chuck, including a chuck base, a fixed plate connected above the chuck base, the chuck base being hollow, and a hydraulic push rod fixedly installed inside the chuck base, a connecting plate connected to the movable end of the hydraulic push rod, a sliding block connected to the connecting plate, a hinge rod rotatably connected to the connecting plate, and a rotating plate rotatably connected to the connecting plate through the hinge rod;

[0006] A hollow plate is connected to the sliding block, a gear is rotatably connected inside the hollow plate, a contact block is slidably connected inside the hollow plate, a sliding rod is slidably connected above the hollow plate, a pull ring is connected to one end of the sliding rod, an interlocking block is connected to the other end of the sliding rod, a rack is connected to one side of the contact block, and a limit block is connected to the other side of the contact block.

[0007] As a further embodiment of this utility model: the surface of the fixing plate is coated with a wear-resistant coating, and the fixing plate is provided with guide grooves, and the four guide grooves are evenly arranged in a centrally symmetrical manner.

[0008] As a further embodiment of this utility model: there are four hinge rods in total, and the whole is designed in an L shape. The rotating plate is designed in a square shape. The four hinge rods are rotatably connected to the four corners of the rotating plate, and the rotating plate is rotatably connected to the fixed plate.

[0009] As a further embodiment of this utility model: the sliding block is T-shaped, the sliding block slides in the guide groove, and the sliding block is in close contact with the surface of the fixed plate and the wall of the guide groove.

[0010] As a further embodiment of this utility model: a limiting groove is provided on the inner wall of one side of the hollow plate, the limiting block slides in the limiting groove, the contact block is provided with anti-slip texture, and four of each of the connecting plate, sliding block, hollow plate and contact block are provided with the same connection structure.

[0011] As a further embodiment of this utility model: the rack meshes with the gear, the gear has a fixing hole, the fitting block is connected with multiple anti-slip rubber strips, the fitting block is inserted into the fixing hole, the sliding rod has rectangular protrusions on both sides, and the sliding rod and the rectangular protrusions slide together on the hollow plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This wear-resistant machine tool chuck, through the setting of a hollow plate, contact block, rack, gear, sliding rod, fitting block and fixing hole, allows the operator to pull the sliding rod upward by pulling the ring, causing the fitting block to disengage from the fixing hole, and then the contact block to contact the workpiece. During contact, the various surfaces of the workpiece will push the contact block, causing it to slide into the hollow plate. At this time, the rack will slide together and drive the gear to rotate. Then, the sliding rod is pressed down, causing the fitting block to insert into the fixing hole and fix the gear, preventing the gear and rack from moving. This allows the contact block to adapt to the various surfaces of the workpiece, eliminating the need for frequent replacement of chuck jaws and improving applicability and processing efficiency.

[0014] 2. This wear-resistant machine tool chuck, through the setting of hydraulic push rods, connecting plates, hinge rods, rotating plates, sliding blocks, and guide grooves, moves the connecting plate at the movable end by activating the hydraulic push rods. At this time, the hinge rods on the moved connecting plate will rotate, thereby pushing the rotating plate to rotate. The rotation of the rotating plate will cause the other hinge rods to rotate, so that multiple sliding blocks slide together in the guide grooves, causing multiple hollow plates and contact blocks to move together to clamp the workpiece and prevent the workpiece from sliding off course. The wear-resistant coating on the surface of the fixed plate can improve the wear resistance of the fixed plate and prevent scratches and damage caused by the movement of the workpiece or sliding blocks. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the chuck base of this utility model;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the rotating plate of this utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the hollow plate of this utility model;

[0019] In the diagram: 1. Chuck base; 2. Fixing plate; 3. Guide groove; 4. Hydraulic push rod; 5. Connecting plate; 6. Sliding block; 7. Hinge rod; 8. Rotating plate; 9. Hollow plate; 10. Gear; 11. Contact block; 12. Sliding rod; 13. Pull ring; 14. Fitting block; 15. Rack; 16. Limiting block; 17. Limiting groove; 18. Fixing hole; 19. Rectangular protrusion. Detailed Implementation

[0020] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0021] like Figure 1-4 As shown, this utility model provides a technical solution: a wear-resistant machine tool chuck, including a chuck base 1, a fixing plate 2 connected above the chuck base 1, a wear-resistant coating on the surface of the fixing plate 2, and guide grooves 3 provided on the fixing plate 2. There are four guide grooves 3 evenly arranged in a centrally symmetrical manner. The wear-resistant coating on the fixing plate 2 protects the surface of the fixing plate 2, preventing the workpiece or sliding block 6 from wearing or scratching the fixing plate 2.

[0022] The chuck base 1 is hollow, and a hydraulic push rod 4 is fixedly installed inside the chuck base 1. The movable end of the hydraulic push rod 4 is connected to a connecting plate 5, and a sliding block 6 is connected to the connecting plate 5. The sliding block 6 is T-shaped and slides in the guide groove 3. The sliding block 6 is in close contact with the surface of the fixed plate 2 and the groove wall of the guide groove 3. Through the contact between the T-shaped sliding block 6 and the groove wall of the guide groove 3 and the surface of the fixed plate 2, the guide groove 3 can guide the sliding block 6 and prevent the sliding block 6 from tilting when moving.

[0023] The connecting plate 5 is rotatably connected to four hinge rods 7, which are in an L-shape. The rotating plate 8 is square, and the four hinge rods 7 are rotatably connected to the four corners of the rotating plate 8. The rotating plate 8 is rotatably connected to the fixed plate 2. Through the rotatable connection between the rotating plate 8 and the multiple hinge rods 7, when one hinge rod 7 moves, the other hinge rods 7 can be driven synchronously through the rotating plate 8, causing multiple contact blocks 11 to move with the sliding block 6, thereby clamping and fixing the workpiece.

[0024] The connecting plate 5 is rotatably connected to the rotating plate 8 via the hinge rod 7. The hollow plate 9 is connected to the sliding block 6. A limiting groove 17 is opened on one side of the inner wall of the hollow plate 9. The limiting block 16 slides in the limiting groove 17. The contact block 11 is provided with anti-slip texture. There are four connecting plates 5, four sliding blocks 6, four hollow plates 9 and four contact blocks 11 with the same connection structure. By sliding the limiting block 16 in the limiting groove 17, the movement distance of the contact block 11 is limited, so as to prevent the contact block 11 from detaching from the hollow plate 9.

[0025] A gear 10 is rotatably connected inside the hollow plate 9, and a contact block 11 is slidably connected inside the hollow plate 9. A sliding rod 12 is slidably connected above the hollow plate 9. A pull ring 13 is connected to one end of the sliding rod 12, and a fitting block 14 is connected to the other end of the sliding rod 12. A rack 15 is connected to one side of the contact block 11, and a limit block 16 is connected to the other side of the contact block 11. The rack 15 meshes with the gear 10. A fixing hole 18 is provided on the gear 10. Multiple anti-slip rubber strips are connected to the fitting block 14. The fitting block 14 is inserted into the fixing hole 18. Rectangular protrusions 19 are provided on both sides of the sliding rod 12. The sliding rod 12 and the rectangular protrusions 19 slide together on the hollow plate 9. The rectangular protrusions 19 on both sides of the sliding rod 12 can prevent the sliding rod 12 from rotating, while the multiple anti-slip rubber strips on the fitting block 14 can increase the friction with the wall of the fixing hole 18, thereby fixing the gear 10.

[0026] The working principle of this utility model is as follows:

[0027] The operator pulls the sliding rod 12 upwards using the pull ring 13, causing the fitting block 14 to disengage from the fixing hole 18. Then, by activating the hydraulic push rod 4, the connecting plate 5 at the movable end is moved. At this time, the hinge rod 7 on the connected plate 5 rotates, thereby pushing the rotating plate 8 to rotate. The rotation of the rotating plate 8 causes the other hinge rods 7 to rotate, causing multiple sliding blocks 6 to slide together in the guide groove 3, making multiple contact blocks 11 contact the workpiece. When in contact, each surface of the workpiece pushes the contact block 11, causing the contact block 11 to slide into the hollow plate 9. At this time, the rack 15 slides together and pushes the gear 10 to rotate. Then, the sliding rod 12 is pressed down, causing the fitting block 14 to insert into the fixing hole 18 and fix the gear 10, preventing the gear 10 and rack 15 from moving. This allows the contact block 11 to adapt to each surface of the workpiece for clamping and fixing.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A wear-resistant machine tool chuck comprising a chuck base (1), characterized in that: The chuck base (1) is connected with a fixed plate (2), the chuck base (1) is hollow design, and the hydraulic push rod (4) is fixedly installed in the chuck base (1), the movable end of the hydraulic push rod (4) is connected with a connecting plate (5), the connecting plate (5) is connected with a sliding block (6), the connecting plate (5) is rotatably connected with a hinged rod (7), and the connecting plate (5) is rotatably connected with a rotating plate (8) through the hinged rod (7); The sliding block (6) is connected with a hollow plate (9), the hollow plate (9) is rotatably connected with a gear (10), the hollow plate (9) is slidably connected with a contact block (11), the hollow plate (9) is slidably connected with a sliding rod (12) above, one end of the sliding rod (12) is connected with a pull ring (13), the other end of the sliding rod (12) is connected with an embedded block (14), one side of the contact block (11) is connected with a rack (15), and the other side of the contact block (11) is connected with a limiting block (16).

2. A wear resistant machine chuck as defined in claim 1, wherein: The surface of the fixed plate (2) is coated with a wear-resistant coating, the fixed plate (2) is provided with four guide sliding grooves (3) which are uniformly arranged in a central symmetric manner.

3. A wear resistant machine chuck as defined in claim 1, wherein: The hinged rod (7) is L-shaped as a whole, the rotating plate (8) is square, and the four hinged rods (7) are rotatably connected with the four corners of the rotating plate (8), respectively.

4. A wear resistant machine chuck as defined in claim 2, wherein: The sliding block (6) is T-shaped as a whole, the sliding block (6) slides in the guide sliding groove (3), and the sliding block (6) is in contact with the surface of the fixed plate (2) and the groove wall of the guide sliding groove (3).

5. A wear resistant machine chuck as defined in claim 1, wherein: The inner wall of one side of the hollow plate (9) is provided with a limiting groove (17), the limiting block (16) slides in the limiting groove (17), the contact block (11) is provided with anti-skid lines, the connecting plate (5), the sliding block (6), the hollow plate (9) and the contact block (11) are provided with four connecting structures which are the same.

6. A wear resistant machine chuck as defined in claim 1, wherein: The rack (15) is engaged with the gear (10), the gear (10) is provided with a fixed hole (18), the embedded block (14) is connected with a plurality of anti-skid rubber strips, the embedded block (14) is inserted into the fixed hole (18), and the sliding rod (12) is provided with a rectangular protrusion (19) on both sides. The sliding rod (12) and the rectangular protrusion (19) slide on the hollow plate (9).

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