Precise part machining clamp

Abstract

The utility model discloses a precision part machining clamp which comprises a fixing table, a hand wheel is rotated to drive a threaded rod to rotate, then a movable seat is driven to move along a sliding rail, and the relative distance between two clamping units is accurately adjusted, so that the operation difficulty of part clamping is reduced, and the machining efficiency is improved. Hydraulic oil is injected into the fixing cylinder through the liquid injection pipe, stable transmission of clamping force is ensured through incompressibility of the hydraulic oil, the influence of vibration on the clamp can be effectively resisted, the possibility that the clamp loosens and a mold shifts is greatly reduced, and then the mold machining precision is improved. The controller receives a signal detected by the pressure sensor and controls the electromagnetic valve, so that after clamping, further flowing of hydraulic oil in the fixing cylinder is stopped, it is ensured that the clamping force reaches the needed level and keeps stable, deformation and damage of the die in the machining process are reduced easily through accurate clamping force control, and the machining efficiency is improved. The processing quality is further improved.

Description

Technical Field

[0001] This utility model relates to the field of precision mold manufacturing technology, specifically a precision parts processing fixture. Background Technology

[0002] In the process of precision mold production, mold clamping is one of the key links to ensure machining accuracy and quality. However, traditional clamping fixtures often have problems such as complicated operation, unstable clamping force, and easy loosening, which seriously affect the accuracy and efficiency of mold processing.

[0003] Traditional fixtures mostly use physical clamping methods, such as bolts and nuts. These methods not only require a lot of time and effort to operate, but also make it difficult to guarantee the magnitude and stability of the clamping force. In addition, the vibration generated during mold processing often leads to loosening of the fixture and displacement of the mold, further affecting the processing accuracy and quality. To solve these problems, we propose a precision parts processing fixture. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model discloses a precision parts machining fixture. The technical solution adopted includes a fixed table, a slide groove in the middle of the fixed table, a fixed seat at the left end of the slide groove, and the fixed seat is fixedly installed on the top left end of the fixed table. A driving component inside the slide groove drives a movable seat. Clamping units are fixedly installed on the top of the movable seat and the fixed seat, respectively. The clamping unit includes a fixed cylinder, a guide rod, a clamping plate, a piston plate, a first compression spring, a detection component, a fixing frame, and a pressure sensor. Two fixed cylinders are provided, and the fixed cylinders are respectively fixedly installed on the fixed seat. Guide rods are slidably installed in sliding holes at the center of the top of the movable base and the center of the fixed cylinder opposite to the fixed cylinder. Clamping plates are fixedly installed at the opposite ends of the guide rods. The other ends of the guide rods are fixedly connected to piston plates slidably installed inside the fixed cylinder. First compression springs are fixedly installed on the other side of the piston plates. The other ends of the first compression springs are fixedly connected to the inside of the fixed cylinder. Detection components are provided at the other top end of the fixed cylinder. Pressure sensors are provided above the detection components. The pressure sensors are fixedly installed at the bottom of the fixed frame provided on the top of the fixed base and the movable base.

[0005] As a preferred technical solution of this utility model, the drive assembly consists of a threaded rod, a slide rail, and a handwheel. The threaded rod is located in the middle of the inner side of the slide groove. The left and right ends of the threaded rod are rotatably connected to the left and right sides of the inside of the slide groove through bearings, and the right end of the threaded rod passes through the right end of the fixed platform and is fixedly connected to the handwheel. The threaded rod is threadedly connected to the threaded hole in the middle of the movable seat. The front and rear sides of the movable seat are slidably connected to the slide rails located in the middle of the front and rear sides inside the slide groove.

[0006] As a preferred embodiment of this utility model, the detection assembly comprises a connecting pipe, a solenoid valve, a piston rod, a push plate, and a second compression spring. Two connecting pipes are provided, each connected to the top of a fixed cylinder. A piston rod is slidably installed within a sliding hole at the center of the top of each connecting pipe. Push plates are located at the top and bottom of each piston rod. The push plate at the top of the piston rod is in movable contact with the bottom of a pressure sensor, and the push plate at the bottom of the piston rod is slidably connected to the inner side of the connecting pipe. A second compression spring is located at the top of each push plate, and the second compression spring is fitted onto the outer side of the piston rod. The upper and lower ends of the second compression spring are fixedly connected to the top of the inner side of the connecting pipe and the top of the push plate at the bottom of the piston rod, respectively. A solenoid valve is located below the push plate at the bottom of the piston rod, and the solenoid valve is fixedly installed at the bottom of the connecting pipe.

[0007] As a preferred embodiment of this utility model, the center of the end of the fixed cylinder away from the clamping plate is respectively connected to an injection pipe, and a sealing cap is threaded onto the top of the injection pipe.

[0008] As a preferred technical solution of this utility model, it also includes mounting holes, and four mounting holes are provided, which are respectively located at the four corners of the bottom of the fixed platform.

[0009] As a preferred technical solution of this utility model, it also includes a controller, which is set at the top right front end of the fixed platform. The output end of the controller is electrically connected to the input end of the solenoid valve, and the input end of the controller is electrically connected to the output end of the pressure sensor and the external power supply.

[0010] The beneficial effects of this utility model are as follows: This utility model drives the threaded rod to rotate by rotating the handwheel, which in turn drives the moving seat to move along the slide rail, precisely adjusting the relative distance between the two clamping units, thereby reducing the difficulty of clamping parts. Hydraulic oil is injected into the interior of the fixed cylinder through the injection pipe. The incompressibility of the hydraulic oil ensures the stable transmission of clamping force, effectively resisting the influence of vibration on the fixture, greatly reducing the possibility of fixture loosening and mold displacement, thereby improving the accuracy of mold processing. The controller receives the signal detected by the pressure sensor and controls the solenoid valve, thereby stopping the further flow of hydraulic oil in the fixed cylinder after clamping, ensuring that the clamping force reaches the required level and remains stable. This precise clamping force control helps to reduce the deformation and damage of the mold during processing, further improving the processing quality. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the structure of this utility model from below;

[0013] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0014] In the diagram: 1. Fixed platform; 2. Slide rail; 3. Controller; 4. Fixed base; 5. Clamping unit; 51. Fixed cylinder; 52. Guide rod; 53. Clamping plate; 54. Piston plate; 55. First compression spring; 56. Detection component; 561. Connecting pipe; 562. Solenoid valve; 563. Piston rod; 564. Push plate; 565. Second compression spring; 57. Fixed frame; 58. Pressure sensor; 6. Threaded rod; 7. Moving base; 8. Slide rail; 9. Handwheel; 10. Injection pipe; 11. Sealing cap; 12. Mounting hole. Detailed Implementation

[0015] Example 1

[0016] like Figures 1 to 3As shown, this utility model discloses a precision parts machining fixture. The technical solution includes a fixed platform 1 and four mounting holes 12, located at the four bottom corners of the fixed platform 1. These mounting holes facilitate the operator's installation of the device on an external machine tool. A slide groove 2 is located in the middle of the fixed platform 1, and a fixed seat 4 is located at the left end of the slide groove 2. The fixed seat 4 is fixedly installed at the top left end of the fixed platform 1. A driving assembly inside the slide groove 2 drives a movable seat 7. The driving assembly consists of a threaded rod 6, a slide rail 8, and a handwheel 9. The threaded rod 6 is located in the middle of the inner side of the slide groove 2, and its left and right ends are rotatably connected to the left and right sides of the slide groove 2 via bearings. The right end of the threaded rod 6 passes through the right end of the fixed platform 1 and is fixedly connected to the handwheel 9. The threaded rod 6 is threadedly connected to the threaded hole in the middle of the movable seat 7. The front and rear sides of the movable seat 7 are slidably connected to the slide rails 8 in the middle of the front and rear sides inside the slide groove 2, respectively. By rotating the handwheel 9, the handwheel 9 drives the threaded rod 6 to rotate inside the slide groove 2. Since the threaded hole in the middle of the movable seat 7 is threadedly connected to the threaded rod 6, the threaded rod 6 can drive the movable seat 7 to move along the slide rails 8 inside the slide groove 2 during rotation, thereby shortening the distance between the movable seat 7 and the fixed seat 4. The top of the movable seat 7 and the fixed seat 4 are respectively fixedly installed with clamping units 5. The clamping unit 5 includes a fixed cylinder 51, a guide rod 52, a clamping plate 53, a piston plate 54, and a first compression spring 55. The system includes a detection component 56, a fixing bracket 57, and a pressure sensor 58. Two fixing cylinders 51 are provided, one fixedly mounted on the top center of the fixed base 4 and the other on the movable base 7. Guide rods 52 are slidably mounted in sliding holes at opposite ends of the fixing cylinders 51. Clamping plates 53 are fixedly mounted at opposite ends of the guide rods 52. The other ends of the guide rods 52 are fixedly connected to piston plates 54 slidably mounted inside the fixing cylinders 51. First compression springs 55 are fixedly mounted on the other side of the piston plates 54. The other ends of the first compression springs 55 are fixedly connected to the inside of the fixing cylinders 51. A liquid injection tube 10 is connected to the center of the end of the fixing cylinder 51 away from the clamping plates 53. A sealing cap 11 is threaded onto the top of the liquid injection tube 10. Hydraulic oil is injected into the interior of the fixed cylinder 51 through the injection pipe 10. This step is to provide a stable clamping force through the pressure of the liquid during the subsequent clamping process. After the injection is completed, the sealing cap 11 is installed on the top of the injection pipe 10 to seal it and prevent liquid leakage. Detection components 56 are respectively provided at the other end of the top of the fixed cylinder 51. Pressure sensors 58 are respectively provided above the detection components 56. The detection components 56 consist of a connecting pipe 561, a solenoid valve 562, a piston rod 563, a push plate 564, and a second compression spring 565. There are two connecting pipes 561, each connected to the top of the fixed cylinder 51. The piston rod 563 is slidably installed in the sliding hole at the center of the top of the connecting pipe 561.Push plates 564 are respectively provided at the top and bottom of piston rod 563. The push plate 564 at the top of piston rod 563 is in movable contact with the bottom of pressure sensor 58, and the push plate 564 at the bottom of piston rod 563 is slidably connected to the inner side of connecting pipe 561. A second compression spring 565 is respectively provided at the top of push plate 564, and the second compression spring 565 is respectively fitted on the outer side of piston rod 563. The upper and lower ends of the second compression spring 565 are respectively fixedly connected to the top of the inner side of connecting pipe 561 and the top of push plate 564 at the bottom of piston rod 563. Solenoid valves 562 are respectively provided below push plate 564 at the bottom of piston rod 563, and solenoid valves 562 are respectively fixedly installed at the bottom of connecting pipe 561. Pressure sensor 58 is respectively fixedly installed at the bottom of fixed bracket 57 provided at the top of fixed base 4 and movable base 7. When clamping plate 53 contacts mold, clamping plate 53 pushes piston plate 54 through guide rod 52. The piston moves inside the fixed cylinder 51, causing the piston plate 54 to compress the first compression spring 55 and push the hydraulic oil injected into the fixed cylinder 51 into the connecting pipe 561. The hydraulic oil entering the connecting pipe 561 then pushes the push plate 564 at the bottom of the piston rod 563 to compress the second compression spring 565. The piston rod 563 moves upward along the through hole at the top of the connecting pipe 561, causing the push plate 564 at the top of the piston rod 563 to compress the pressure sensor 58. The system also includes a controller 3, located at the top right front end of the fixed platform 1. The output of the controller 3 is electrically connected to the input of the solenoid valve 562, and the input of the controller 3 is electrically connected to the pressure sensor 58 and the output of an external power supply. The controller 3 is configured to receive the pressure detected by the pressure sensor 58 and determine whether the detected pressure reaches a preset value, thereby controlling the opening or closing of the solenoid valve 562.

[0017] The working principle of this utility model is as follows: In use, the device is fixedly installed on an external machine tool through the mounting holes 12 at the four corners of the fixed platform 1. Next, hydraulic oil is injected into the fixed cylinder 51 through the injection pipe 10. This step is to provide a stable clamping force through the pressure of the liquid during the subsequent clamping process. After the injection is completed, the sealing cap 11 is installed on the top of the injection pipe 10 to seal it and prevent liquid leakage. Then, when clamping and fixing the mold tool to be processed, the operator can rotate the handwheel 9 to drive the threaded rod 6 to rotate inside the slide groove 2. Since the threaded hole in the middle of the moving seat 7 is threadedly connected to the threaded rod 6, the threaded rod 6 can drive the moving seat 7 to move along the slide rail 8 inside the slide groove 2 during rotation, thereby shortening the distance between the moving seat 7 and the fixed seat 4. The purpose of this step is to precisely adjust the two clamps according to the specific dimensions of the mold to be processed. The relative distance between the clamping units 5 is adjusted to clamp and fix the mold. When the clamping plate 53 contacts the mold, the clamping plate 53 pushes the piston plate 54 to move inside the fixed cylinder 51 through the guide rod 52. This causes the piston plate 54 to squeeze the first compression spring 55 and push the hydraulic oil injected into the fixed cylinder 51 into the connecting pipe 561. The hydraulic oil entering the connecting pipe 561 then pushes the push plate 564 at the bottom of the piston rod 563 to squeeze the second compression spring 565. The piston rod 563 moves upward along the through hole at the top of the connecting pipe 561, causing the push plate 564 at the top of the piston rod 563 to squeeze the pressure sensor 58. This sends a signal to the controller 3. When the pressure detected by the pressure sensor 58 reaches the preset value, the controller 3 controls the solenoid valve 562 to close, thereby stopping the further flow of hydraulic oil and ensuring that the clamping force reaches the required level and remains stable.

[0018] The circuit connection involved in this utility model is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It belongs to the widely used prior art.

[0019] Components not described in detail in this article are existing technologies.

[0020] While the specific embodiments of this utility model have been described in detail above, this utility model 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 utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.

Claims

1. A precision parts machining fixture, comprising a fixed table (1), characterized in that, A sliding groove (2) is provided in the middle of the fixed platform (1). A fixed seat (4) is provided at the left end of the sliding groove (2), and the fixed seat (4) is fixedly installed at the top left end of the fixed platform (1). A driving component provided inside the sliding groove (2) drives and connects to a movable seat (7). A clamping unit (5) is fixedly installed on the top of the movable seat (7) and the fixed seat (4). The clamping unit (5) includes a fixed cylinder (51), a guide rod (52), a clamping plate (53), a piston plate (54), a first compression spring (55), a detection component (56), a fixed frame (57), and a pressure sensor (58). Two fixed cylinders (51) are provided. The fixed cylinders (51) are fixedly installed at the top center of the fixed seat (4) and the movable seat (7), respectively. Guide rods (52) are slidably installed in the sliding holes at one end of the guide rods (52). Clamping plates (53) are fixedly installed at the opposite ends of the guide rods (52). The other ends of the guide rods (52) are fixedly connected to piston plates (54) slidably installed inside the fixed cylinder (51). A first compression spring (55) is fixedly installed on the other side of the piston plate (54). The other end of the first compression spring (55) is fixedly connected to the inside of the fixed cylinder (51). A detection component (56) is provided at the other end of the top of the fixed cylinder (51). A pressure sensor (58) is provided above the detection component (56). The pressure sensor (58) is fixedly installed at the bottom of the fixed frame (57) provided on the top of the fixed seat (4) and the movable seat (7).

2. The precision parts machining fixture according to claim 1, characterized in that: The drive assembly consists of a threaded rod (6), a slide rail (8), and a handwheel (9). The threaded rod (6) is located in the middle of the inner side of the slide groove (2). The left and right ends of the threaded rod (6) are rotatably connected to the left and right sides of the inside of the slide groove (2) through bearings, and the right end of the threaded rod (6) passes through the right end of the fixed platform (1) and is fixedly connected to the handwheel (9). The threaded rod (6) is threadedly connected to the screw hole in the middle of the movable seat (7). The front and rear sides of the movable seat (7) are slidably connected to the slide rail (8) in the middle of the front and rear sides of the inside of the slide groove (2).

3. A precision parts machining fixture according to claim 1, characterized in that: The detection assembly (56) consists of a connecting pipe (561), a solenoid valve (562), a piston rod (563), a push plate (564), and a second compression spring (565). Two connecting pipes (561) are provided, each connected to the top of a fixed cylinder (51). A piston rod (563) is slidably installed in a sliding hole at the center of the top of each connecting pipe (561). Push plates (564) are respectively provided at the top and bottom of each piston rod (563). The push plate (564) at the top of the piston rod (563) is in movable contact with the bottom of the pressure sensor (58). The push plate (564) at the bottom of the piston rod (563) is slidably connected to the inner side of the connecting pipe (561), and the top of the push plate (564) is respectively provided with a second compression spring (565). The second compression spring (565) is respectively fitted on the outer side of the piston rod (563). The upper and lower ends of the second compression spring (565) are respectively fixedly connected to the top of the inner side of the connecting pipe (561) and the top of the push plate (564) at the bottom of the piston rod (563). The solenoid valve (562) is respectively provided below the push plate (564) at the bottom of the piston rod (563), and the solenoid valve (562) is respectively fixedly installed at the bottom of the connecting pipe (561).

4. A precision parts machining fixture according to claim 1, characterized in that: The fixed cylinder (51) is connected to a liquid injection pipe (10) at the center of the end away from the clamping plate (53), and a sealing cap (11) is threaded onto the top of the liquid injection pipe (10).

5. A precision parts machining fixture according to claim 1, characterized in that: It also includes mounting holes (12), of which four are provided, and the mounting holes (12) are respectively located at the four bottom corners of the fixed platform (1).

6. A precision parts machining fixture according to claim 1, characterized in that: It also includes a controller (3), which is located at the top right front end of the fixed platform (1). The output end of the controller (3) is electrically connected to the input end of the solenoid valve (562), and the input end of the controller (3) is electrically connected to the output end of the pressure sensor (58) and the external power supply.

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