High precision machine clamping device

Abstract

The utility model relates to mould processing equipment field especially relates to high accuracy machine adds clamping device, high accuracy machine adds clamping device, including workbench and support plate, the side wall on workbench is fixed with electric push rod, support plate swing joint is in workbench's top, support plate fixedly installed has the mounting seat, the surface fixedly installed has the locating block of mounting seat, support plate's bottom fixedly installed has two vertical rods, the utility model discloses compared with traditional high accuracy machine adds clamping device, through support plate, mounting seat and locating block cooperation has improved the convenience of upper punch installation positioning, through the cooperation of cylinder, first connecting rod, second connecting rod, servo motor and clamping block has improved the convenience and stability performance of upper punch clamping, through workbench, support plate, electric push rod and mounting seat and improve the convenience of upper punch movement positioning, thereby improve upper punch installation positioning and processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mold processing equipment, and in particular to a high-precision machining clamping device. Background Technology

[0002] The upper punch is an important component of stamping dies or tablet press dies. It is usually used in conjunction with equipment such as presses or tablet presses. The press or tablet press provides power, which causes relative movement between the punch and the lower punch (or die) of the upper punch, applying pressure to the material and causing plastic deformation, thereby obtaining a workpiece or product of the required shape and size. Each part of the upper punch needs to have high machining accuracy to ensure uniform clearance between the punch and the die, thereby ensuring the dimensional accuracy and surface quality of the stamped or pressed parts. High-precision machining clamping devices are required during the machining process of the upper punch.

[0003] Existing high-precision machining clamping devices typically require operators to use bolts for fixing during use. Since the upper punch is processed in large quantities, fixing the upper punch is time-consuming and labor-intensive, thus affecting the efficiency of upper punch processing. Utility Model Content

[0004] To overcome the problem that existing high-precision machining clamping devices usually require operators to use bolts for fixing during use, and that fixing the upper punches is time-consuming and labor-intensive due to the large number of upper punches being processed, thus affecting the processing efficiency of the upper punches.

[0005] The technical solution of this utility model is as follows: a high-precision machining clamping device, including a worktable and a support plate. An electric push rod is fixed on the side wall of the worktable. The support plate is movably connected to the top of the worktable. A mounting seat is fixed on the support plate. A positioning block is fixed on the surface of the mounting seat. Two vertical rods are fixed at the bottom of the support plate. Two first sliding grooves are opened on the surface of the worktable for the vertical rods to slide. A floor is fixed at the bottom of each of the two vertical rods. Several cylinders are fixed at the top of the floor. A first connecting rod is fixed at the output end of each cylinder. Two second connecting rods are fixed at the top of each first connecting rod. A servo motor is fixed at the top of each second connecting rod. A clamping block is fixed at the output end of each servo motor.

[0006] Furthermore, the external dimensions of the two vertical rods are adapted to the internal dimensions of the first groove, and the output end of the electric actuator is fixed on the side wall of the vertical rod, which improves the stability of the horizontal movement of the vertical rod.

[0007] Furthermore, the positioning blocks and cylinders are linearly distributed, and the positioning blocks and cylinders are located in the same vertical direction.

[0008] Furthermore, the second connecting rods are symmetrically distributed, and two sets of second sliding grooves are symmetrically opened on the surface of the worktable for the second connecting rods to slide, which improves the stability of the horizontal movement of the second connecting rods.

[0009] Furthermore, a rotary table is rotatably connected to the top of the worktable, and several sets of cutting tools are movably connected to the side wall of the rotary table.

[0010] Furthermore, the surface of the support plate is provided with several through slots, the internal dimensions of which are adapted to the external dimensions of the second connecting rod, thereby improving the stability of the vertical movement of the second connecting rod.

[0011] Furthermore, the clamping blocks are symmetrically distributed on both sides of the positioning block, and the bottom of each clamping block is fitted with a protective pad, which improves the stability of the clamping blocks.

[0012] Furthermore, limiting blocks are fixed on the side walls of both vertical rods, and the limiting blocks are symmetrically distributed and slidably connected to the inner top of the worktable, which improves the stability of the sliding of the support plate.

[0013] The beneficial effects of this utility model are:

[0014] Compared to traditional high-precision machining clamping devices, this device improves the ease of installation and positioning of the upper punch by using a support plate, mounting base, and positioning block together. It also enhances the convenience and stability of clamping the upper punch by using a cylinder, first connecting rod, second connecting rod, servo motor, and clamping block together. Furthermore, it improves the ease of movement and positioning of the upper punch by using a worktable, support plate, electric actuator, and mounting base together, thereby increasing the efficiency of upper punch installation, positioning, and processing. Secondly, the device incorporates a through groove and a protective pad. The internal dimensions of the through groove are adapted to the external dimensions of the second connecting rod, thus improving the stability of the vertical movement of the second connecting rod, servo motor, and clamping block. The protective pad, made of rough rubber, further enhances the stability of the clamping block. Attached Figure Description

[0015] Figure 1 The diagram shown is a schematic representation of the overall structure of the high-precision machining clamping device of this utility model.

[0016] Figure 2 The diagram shown is a schematic representation of the support plate structure of this utility model.

[0017] Figure 3 The diagram shown is a schematic representation of the positioning block structure of this utility model.

[0018] Figure 4 The diagram shown is a schematic representation of the clamping block structure of this utility model.

[0019] Figure 5 The diagram shown is a schematic representation of the workbench structure of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Worktable; 2. Support plate; 3. Electric actuator; 4. Mounting base; 5. Positioning block; 6. Clamping block; 7. Rotary table; 8. Cutting tool; 9. First slide groove; 10. Vertical rod; 11. Floor; 12. Cylinder; 13. First connecting rod; 14. Second connecting rod; 15. Servo motor; 16. Limiting block; 17. Through groove; 18. Protective pad; 19. Second slide groove. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Among the currently discovered feasible technologies, the following are described:

[0023] In modern manufacturing, die-cutting is an important process widely used in metal forming, plastic product processing and other fields. During die-cutting, clamping devices play a crucial role in ensuring the positional accuracy and stability of the workpiece during processing and preventing workpiece displacement or vibration caused by external forces, which would affect processing quality and production efficiency.

[0024] Common force source devices include manual clamping devices, pneumatic clamping devices, hydraulic clamping devices, and electric clamping devices. Manual clamping devices mainly rely on manual operation, such as screw clamps and eccentric clamps. They are simple in structure and low in cost, but have limited clamping force and high labor intensity. They are suitable for single-piece or small-batch production or occasions where the clamping force requirement is not high. Pneumatic clamping devices use compressed air as power and have the advantages of rapid action, convenient clamping force adjustment, and no pollution. They are widely used in automated production lines. Hydraulic clamping devices use hydraulic oil to transmit pressure and can provide a large clamping force. They are stable and reliable and are suitable for heavy-duty machining with high clamping force requirements. Electric clamping devices are driven by electric motors and have the characteristics of high control precision and automated operation, but the cost is relatively high.

[0025] The function of a force transmission mechanism is to transmit the force generated by the power source to the clamping element, and to change the magnitude, direction, and point of application of the force according to actual needs. The force transmission mechanism should have good force transmission performance, minimize energy loss during the force transmission process, and ensure the stability and reliability of the clamping force. Common force transmission mechanisms include lever mechanisms, linkage mechanisms, and wedge mechanisms. Lever mechanisms amplify or reduce force through the lever principle, and are simple in structure and easy to use. Linkage mechanisms can realize complex motion conversion and force transmission, and are often used in clamping devices that require a large stroke or special motion trajectory. Wedge mechanisms use the inclined plane principle of the wedge to convert and transmit force, and can generate a large clamping force.

[0026] Clamping elements are the parts that directly contact the workpiece and achieve the clamping effect. Their performance and structural form directly affect the clamping effect and the machining quality of the workpiece. Clamping elements should have sufficient strength and rigidity to withstand the clamping force and the cutting force during the machining process. At the same time, the surface of the clamping element should have good wear resistance and appropriate roughness to prevent damage to the workpiece surface. Common clamping elements include pressure plates, jaws, and V-blocks. Pressure plates are often used for flat clamping, and the pressure plate is pressed onto the workpiece by bolts or other means to achieve workpiece clamping. Jaws are suitable for clamping round or irregularly shaped workpieces, and the workpiece is held tightly by the contraction or opening of the jaws. V-blocks are mainly used for positioning and clamping cylindrical workpieces, which can ensure the axial position accuracy of the workpiece.

[0027] The clamping force is one of the key parameters in clamping device design. Excessive clamping force can cause workpiece deformation, affecting machining accuracy and even damaging the workpiece and clamping elements. Insufficient clamping force, on the other hand, cannot guarantee workpiece stability during machining, easily causing vibration and displacement, thus affecting machining quality. Determining the clamping force requires considering factors such as the workpiece's material, shape, size, machining process, and cutting forces. Generally, the clamping force can be determined through theoretical calculations or empirical analogies. Theoretical calculations require establishing a mechanical model based on the workpiece's stress conditions using mechanical principles to calculate the required clamping force. Empirical analogies involve referencing clamping force data from similar workpieces and machining processes, and making appropriate adjustments based on actual conditions.

[0028] Please refer to Figures 1-5A high-precision machining clamping device includes a worktable 1 and a support plate 2. An electric actuator 3 is fixedly mounted on the side wall of the worktable 1. The support plate 2 is movably connected to the top of the worktable 1. A mounting base 4 is fixedly mounted on the support plate 2. A positioning block 5 is fixedly mounted on the surface of the mounting base 4 for positioning the upper die material. Two vertical rods 10 are fixedly mounted at the bottom end of the support plate 2. Two first sliding grooves 9 are formed on the surface of the worktable 1 for the vertical rods 10 to slide. A rotary table 7 is rotatably connected to the top of the worktable 1. Several sets of cutting tools 8 are movably connected to the side wall of the rotary table 7. The cutting tools 8 are used for sawing, grinding, and tapping, respectively. The rotary table 7 and the cutting tools 8 are existing technologies and will not be described in detail here. The external dimensions of the two vertical rods 10 are sequentially adapted to the internal dimensions of the first sliding grooves 9. The output end of the electric actuator 3 is fixedly mounted on the side wall of the vertical rod 10, improving the height of the vertical rod 10. To improve the stability of horizontal movement, the bottom ends of the two vertical rods 10 are fixed with a base plate 11, and the top of the base plate 11 is fixed with several cylinders 12. The positioning blocks 5 and cylinders 12 are linearly distributed and located in the same vertical direction. The output end of each cylinder 12 is fixed with a first connecting rod 13, and the top of each first connecting rod 13 is fixed with two second connecting rods 14. The top of each second connecting rod 14 is fixed with a servo motor 15, and the output end of each servo motor 15 is fixed with a clamping block 6. Starting the servo motor 15 can drive the clamping block 6 to rotate. Starting the cylinder 12 can adjust the height of the clamping block 6, thereby improving the stability of the upper punch clamping. Starting the electric push rod 3 can push the support plate 2 to move horizontally, thereby moving the upper punch to the bottom of the tool 8 in sequence, thereby improving the installation, positioning and processing efficiency of the upper punch.

[0029] The second connecting rods 14 are symmetrically distributed. The surface of the worktable 1 is symmetrically provided with two sets of second sliding grooves 19 for the second connecting rods 14 to slide, which improves the stability of the second connecting rods 14 in horizontal movement. The surface of the support plate 2 is provided with several through grooves 17. The internal dimensions of the through grooves 17 are adapted to the external dimensions of the second connecting rods 14 in sequence, which improves the stability of the second connecting rods 14 in vertical movement.

[0030] The clamping blocks 6 are symmetrically distributed on both sides of the positioning block 5. The bottom of each clamping block 6 is fitted with a protective pad 18. The protective pad 18 is made of rubber with a rough surface to increase friction resistance. The protective pad 18 has a built-in pressure sensor to detect the clamping force of the clamping block 6 in real time, which improves the stability and safety of clamping the clamping block 6. Limiting blocks 16 are fixed on the side walls of the two vertical rods 10. The limiting blocks 16 are symmetrically distributed and slidably connected to the inner top of the worktable 1, which improves the sliding stability of the support plate 2.

[0031] When using this high-precision machining clamping device, the operator first installs the device in the designated position, then connects the external power supply, and sequentially places the upper punches to be processed onto the outer surface of the positioning block 5. Then, the servo motor 15 is started to drive the clamping block 6 to rotate to the top of the mounting base 4. Then, the cylinder 12 is started to drive the first connecting rod 13 and the second connecting rod 14 to move vertically in sync, thereby driving the clamping block 6 to move vertically and clamp onto the surface of the upper punch in sequence. The rotary table 7 is started to drive the cutting tool 8 to rotate, thereby changing different types of cutting tools 8. The cutting tool 8 is used for sawing, grinding, and tapping operations. When one upper punch is processed, the electric push rod 3 is started to push the support plate 2 to move horizontally, thereby moving another upper punch to the bottom of the rotary table 7, thus improving the installation, positioning, and processing efficiency of the upper punch.

[0032] Considering the stability of clamping, a through groove 17 and a protective pad 18 are provided. The internal dimensions of the through groove 17 are adapted to the external dimensions of the second connecting rod 14, thereby improving the stability of the vertical movement of the second connecting rod 14, the servo motor 15 and the clamping block 6. The protective pad 18 is made of rubber with a rough surface, which improves the clamping stability of the clamping block 6.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 high-precision machining clamping device, characterized in that, The worktable (1) and support plate (2) are included: an electric push rod (3) is fixed on the side wall of the worktable (1), the support plate (2) is movably connected to the top of the worktable (1), a mounting seat (4) is fixed on the support plate (2), a positioning block (5) is fixed on the surface of the mounting seat (4), two vertical rods (10) are fixed at the bottom of the support plate (2), two first sliding grooves (9) are opened on the surface of the worktable (1) for the vertical rods (10) to slide, a floor (11) is fixed at the bottom of the two vertical rods (10), several cylinders (12) are fixed at the top of the floor (11), a first connecting rod (13) is fixed at the output end of the cylinders (12), two second connecting rods (14) are fixed at the top of the first connecting rods (13), a servo motor (15) is fixed at the top of the second connecting rods (14), and a clamping block (6) is fixed at the output end of the servo motor (15).

2. The high-precision machining clamping device according to claim 1, characterized in that: The external dimensions of the two vertical rods (10) are adapted to the internal dimensions of the first slide groove (9) in sequence, and the output end of the electric push rod (3) is fixed on the side wall of the vertical rod (10).

3. The high-precision machining clamping device according to claim 1, characterized in that: The positioning block (5) and the cylinder (12) are both linearly distributed, and the positioning block (5) and the cylinder (12) are located in the same vertical direction.

4. The high-precision machining clamping device according to claim 1, characterized in that: The second connecting rods (14) are symmetrically distributed, and the surface of the worktable (1) is symmetrically provided with two sets of second sliding grooves (19) for the second connecting rods (14) to slide.

5. The high-precision machining clamping device according to claim 1, characterized in that: A rotary table (7) is rotatably connected to the top of the worktable (1), and several sets of cutting tools (8) are movably connected to the side wall of the rotary table (7).

6. The high-precision machining clamping device according to claim 1, characterized in that: The surface of the support plate (2) is provided with several through slots (17), and the internal dimensions of the through slots (17) are adapted to the external dimensions of the second connecting rod (14).

7. The high-precision machining clamping device according to claim 6, characterized in that: The clamping blocks (6) are symmetrically distributed on both sides of the positioning block (5), and the bottom of each clamping block (6) is fitted with a protective pad (18).

8. The high-precision machining clamping device according to claim 1, characterized in that: Limiting blocks (16) are fixed on the side walls of both vertical rods (10), and the limiting blocks (16) are symmetrically distributed and slidably connected to the inner top of the workbench (1).

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