Flexible composite machining fixture

Abstract

The utility model belongs to the technical field of clamp, concretely is a kind of flexible composite processing clamp, comprising: fixed frame and the clamp assembly being arranged on the fixed frame;The clamp assembly includes the drive mechanism being installed on the fixed frame, the clamping mechanism being fixed on the drive mechanism and the pressure regulating mechanism being arranged in the drive mechanism;The drive mechanism includes the hydraulic ram being installed on the end of the fixed frame.The utility model can be placed to the clamping rod between workpiece after clamp assembly, and hydraulic pump drives hydraulic ram to extend after pushing clamping rod to carry out preliminary positioning to workpiece, at this time, workpiece position can be adjusted appropriately, then drive hydraulic pump to pressurize in hydraulic tank, simultaneously open control valve, make hydraulic oil enter hydraulic tank after passing through through-hole two and enter clamping frame inside, and hydraulic oil pushes each piston, until the end of guide rod top to the most end in clamping rod, complete the fixation to workpiece, and the scheme adopts segmented clamping mode, and the adjustment of workpiece position is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, specifically a flexible composite machining fixture. Background Technology

[0002] Flexible fixtures are devices used in mechanical manufacturing to fix workpieces in the correct position for operation or inspection; they are also called clamps. In a broader sense, any device used to quickly, conveniently, and safely install workpieces at any stage of the manufacturing process can be called a fixture.

[0003] Chinese patent application number 201811159259.5 discloses a flexible clamp, belonging to the field of clamping technology. The flexible clamp includes a support and at least one elastic diaphragm sleeve, with the elastic diaphragm sleeve installed at the end of the support and fitted onto the inner and / or outer wall of the support… While this flexible clamp solves the problem of existing clamps being unable to achieve non-destructive gripping or positioning, it employs a single-stage pressure clamping method. This not only results in poor clamping stability but also low fault tolerance during initial clamping and inconvenience in adjusting the workpiece position. Therefore, we propose a flexible composite machining clamp. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows: A flexible composite machining fixture includes: a fixed frame and a fixture assembly disposed on the fixed frame; the fixture assembly includes a drive mechanism mounted on the fixed frame, a clamping mechanism fixed on the drive mechanism, and a pressure regulating mechanism disposed within the drive mechanism; the drive mechanism includes a hydraulic rod mounted on the end of the fixed frame, a hydraulic tank fixed to the drive end of the hydraulic rod, a hydraulic pump connected to the hydraulic rod and the hydraulic tank respectively, and a hydraulic pipe fixed to the end of the hydraulic tank; the pressure regulating mechanism includes a fixing ring mounted inside the hydraulic tank, a positioning groove opened inside the hydraulic pipe, a positioning plate placed in the positioning groove, a through hole one opened on the positioning plate, an electric telescopic rod fixed to the middle of the positioning plate, a push plate fixed to the end of the electric telescopic rod, a through hole two opened on the push plate, and a control valve mounted on the side of the push plate.

[0006] In a preferred embodiment, the present invention can be further configured as follows: the clamping mechanism includes a clamping frame connected to the end of the hydraulic pipe, a fixed mesh plate installed in the clamping frame, a partition plate fixed to the side of the fixed mesh plate, a limiting plate disposed in the clamping frame, a through hole three opened in the limiting plate, a piston disposed between the partition plates, a guide rod fixed to the piston and passing through the through hole three, and a clamping rod inserted into the end of the guide rod.

[0007] In a preferred embodiment, the present invention can be further configured such that the clamping mechanism also includes a spring connected between the limiting plate and the clamping rod.

[0008] In a preferred embodiment, the present invention can be further configured such that the partition plate is a matrix-shaped grid plate structure, and the grid plate of a single partition plate corresponds to a set of guide rods, clamping rods and springs.

[0009] In a preferred embodiment, the present invention can be further configured such that a sealing ring is fixed on the fixing ring.

[0010] In a preferred embodiment, the present invention can be further configured such that a pressure sensor is installed on the inner side of the clamping frame.

[0011] The above-mentioned technical solution of this utility model has the following beneficial technical effects: 1. This utility model, through a clamping assembly, allows for the initial positioning of a workpiece after it has been placed between the clamping rods. The hydraulic pump drives the hydraulic rods to extend and push the clamping rods. At this point, the workpiece position can be adjusted appropriately. Then, the hydraulic pump is driven to pressurize the hydraulic tank, and the control valve is opened to allow hydraulic oil to enter the hydraulic tank and pass through the second through-hole into the inner side of the clamping frame. The hydraulic oil pushes each piston until the end of the guide rod reaches the innermost end of the clamping rod, thus fixing the workpiece. This scheme uses a segmented clamping method, which facilitates the adjustment of the workpiece position.

[0012] 2. This utility model, through the clamping assembly, allows the control valve to be closed after clamping is completed, and the push plate to be moved in the hydraulic pipe by the electric telescopic rod, thereby further pressurizing the clamping frame. This method can compensate for insufficient pressure and instability, and has high practicality. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the flexible composite machining fixture of this utility model; Figure 2 This is an enlarged view of section A of the flexible composite processing fixture of this utility model; Figure 3 This is an enlarged view of section B of the flexible composite processing fixture of this utility model.

[0014] Figure label: 100. Fixture; 200. Fixture assembly; 210. Hydraulic rod; 220. Hydraulic tank; 230. Hydraulic pump; 240. Hydraulic pipe; 310. Retaining ring; 311. Sealing ring; 320. Positioning groove; 330. Positioning plate; 340. Through hole one; 350. Electric telescopic rod; 360. Push plate; 370. Through hole two; 380. Control valve; 410. Clamping frame; 411. Pressure sensor; 420. Fixing mesh plate; 430. Divider plate; 440. Limiting plate; 450. Through hole three; 460. Piston; 470. Guide rod; 480. Clamping rod; 490. Spring. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0016] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of this invention.

[0017] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a flexible composite machining fixture.

[0018] Combination Figures 1-3 As shown, the present invention provides a flexible composite processing fixture, comprising: a fixing frame 100 and a fixture assembly 200 disposed on the fixing frame 100.

[0019] The clamping assembly 200 includes a drive mechanism mounted on the fixed frame 100, a clamping mechanism fixed on the drive mechanism, and a pressure regulating mechanism disposed within the drive mechanism. The drive mechanism includes a hydraulic rod 210 mounted on the end of the fixed frame 100, a hydraulic tank 220 fixed to the drive end of the hydraulic rod 210, a hydraulic pump 230 connected to the hydraulic rod 210 and the hydraulic tank 220 respectively, and a hydraulic pipe 240 fixed to the end of the hydraulic tank 220. The pressure regulating mechanism includes a fixing ring 310 mounted inside the hydraulic tank 220, a positioning groove 320 opened inside the hydraulic pipe 240, a positioning plate 330 placed in the positioning groove 320, a through hole 340 opened on the positioning plate 330, and an electric telescopic rod fixed to the middle of the positioning plate 330. 350, a push plate 360 ​​fixed to the end of the electric telescopic rod 350, a second through hole 370 opened on the push plate 360, and a control valve 380 installed on the side of the push plate 360. Through the clamping assembly 200, after the workpiece is placed between the clamping rods 480, the hydraulic pump 230 drives the hydraulic rod 210 to extend and push the clamping rod 480 to initially position the workpiece. At this time, the position of the workpiece can be adjusted appropriately. Then, the hydraulic pump 230 is driven to pressurize the hydraulic tank 220, and the control valve 380 is opened at the same time, so that the hydraulic oil enters the hydraulic tank 220 and passes through the second through hole 370 into the inner side of the clamping frame 410. The hydraulic oil pushes each piston 460 until the end of the guide rod 470 reaches the innermost end of the clamping rod 480, thus completing the fixation of the workpiece. This scheme adopts a segmented clamping method, which can facilitate the adjustment of the workpiece position.

[0020] Specifically, the clamping mechanism includes a clamping frame 410 connected to the end of the hydraulic pipe 240, a fixed mesh plate 420 installed in the clamping frame 410, a partition plate 430 fixed to the side of the fixed mesh plate 420, a limiting plate 440 disposed in the clamping frame 410, a through hole 450 opened on the limiting plate 440, a piston 460 disposed between the partition plates 430, a guide rod 470 fixed to the piston 460 and passing through the through hole 450, and a clamping rod 480 inserted into the end of the guide rod 470. After clamping is completed, the control valve 380 can be closed, and the push plate 360 ​​can be moved in the hydraulic pipe 240 by the electric telescopic rod 350, thereby further pressurizing the clamping frame 410. This method can compensate for insufficient pressure and instability, and has high practicality.

[0021] Furthermore, the clamping mechanism also includes a spring 490 connected between the limiting plate 440 and the clamping rod 480. The spring 490 can play a preliminary positioning role after the clamping rod 480 is compressed.

[0022] On the other hand, the partition plate 430 is a matrix grid plate structure, and the grid plate of a single partition plate 430 corresponds to a set of guide rods 470, clamping rods 480 and springs 490. Multiple sets of clamping rods 480 can be used to clamp the workpiece, and the clamping effect is better.

[0023] Furthermore, a sealing ring 311 is fixed on the fixing ring 310, which can improve the sealing between the hydraulic tank 220 and the hydraulic pipe 240.

[0024] Furthermore, a pressure sensor 411 is installed on the inner side of the clamping frame 410, which can detect the real-time pressure inside the clamping frame 410, thereby ensuring the stability of clamping.

[0025] Specifically, this solution also includes a controller, which is a general-purpose industrial controller. Its core hardware structure includes a general-purpose microprocessor (CPU), memory (RAM / ROM), and input / output (I / O) interface modules. This controller connects to conventional electrical equipment such as motors and hydraulic rods involved in the solution through its I / O interface and runs preset control programs or algorithms.

[0026] The above controller has the following control methods: Program control (automatic mode): The controller runs a preset control program or algorithm, and automatically realizes the start-up, stop, state switching, timing control and linkage functions of various electrical equipment based on sensor input or preset logic.

[0027] Manual Control (Local / Remote Mode): The controller is equipped with a manual control interface (such as physical buttons, a touchscreen, an HMI, or a remote command receiver module). Operators can directly send commands to the controller through this interface to independently control the start, stop, or status adjustment of any specified electrical device (such as a hydraulic cylinder, hydraulic pump, or electric telescopic mast). This mode is typically used for commissioning, maintenance, or specific operational needs. The controller has a mode switching function, allowing for safe switching between automatic program control and manual control.

[0028] The control program, manual operation logic, and mode switching mechanism are all implemented based on specific application requirements. The specific model of the processor, storage capacity, I / O interface protocol, and the specific form of the manual control interface can be determined by those skilled in the art based on the specifications of the selected general controller, the characteristics of the controlled device, and conventional human-machine interaction requirements. These are common implementation methods in the prior art and can be understood by those skilled in the art, so there is no need to elaborate on the specific details.

[0029] The working principle and usage process of this utility model are as follows: First, the workpiece is placed between the clamping rods 480. Then, the hydraulic pump 230 drives the hydraulic rod 210 to extend and push the clamping rods 480 to initially position the workpiece. At this time, the position of the workpiece can be adjusted appropriately. Then, the hydraulic pump 230 is driven to pressurize the hydraulic tank 220. At the same time, the control valve 380 is opened, allowing hydraulic oil to enter the hydraulic tank 220 and pass through the through hole 370 into the inner side of the clamping frame 410. The hydraulic oil pushes each piston 460 until the end of the guide rod 470 reaches the end of the clamping rod 480, thus completing the fixation of the workpiece. After clamping, the control valve 380 is closed, and the electric telescopic rod 350 is used to push the push plate 360 ​​to move in the hydraulic pipe 240, thereby further pressurizing the clamping frame 410. This method can compensate for insufficient pressure and instability.

[0030] The terms "fixed," "installed," "connected," "set up," "open," "equipped with," "embedded," and "assembled" used in this manual to describe the position or relationship of components all refer to conventional physical connections or spatial configurations that can be understood and implemented by those skilled in the art based on the function of the relevant components, the context, and common knowledge. These relationships encompass, but are not limited to, specific forms such as welding, bonding, threaded fastening, snap-fit, interference fit, plug-in, sliding fit, hinge, integral molding, adjacent arrangement, and opening or slot accommodating. Their purpose is to clearly describe the relative positions, mating methods, and functional implementation paths between components, rather than limiting a single specific structural detail. To ensure a smooth and concise reading experience and ease of understanding, no separate explanation is provided after each term.

[0031] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A flexible composite machining fixture, characterized in that, include: Fixture (100) and clamp assembly (200) disposed on the fixture (100); The clamp assembly (200) includes a drive mechanism mounted on the fixed frame (100), a clamping mechanism fixed on the drive mechanism, and a pressure regulating mechanism disposed within the drive mechanism; The driving mechanism includes a hydraulic rod (210) installed at the end of the fixed frame (100), a hydraulic tank (220) fixed at the driving end of the hydraulic rod (210), a hydraulic pump (230) connected to the hydraulic rod (210) and the hydraulic tank (220) respectively, and a hydraulic pipe (240) fixed at the end of the hydraulic tank (220). The pressure regulating mechanism includes a fixing ring (310) installed inside the hydraulic tank (220), a positioning groove (320) opened inside the hydraulic pipe (240), a positioning plate (330) placed in the positioning groove (320), a through hole (340) opened on the positioning plate (330), an electric telescopic rod (350) fixed in the middle of the positioning plate (330), a push plate (360) fixed at the end of the electric telescopic rod (350), a through hole (370) opened on the push plate (360), and a control valve (380) installed on the side of the push plate (360).

2. The flexible composite machining fixture according to claim 1, characterized in that, The clamping mechanism includes a clamping frame (410) connected to the end of the hydraulic pipe (240), a fixed mesh plate (420) installed in the clamping frame (410), a partition plate (430) fixed to the side of the fixed mesh plate (420), a limiting plate (440) disposed in the clamping frame (410), a through hole three (450) opened on the limiting plate (440), a piston (460) disposed between the partition plates (430), a guide rod (470) fixed to the piston (460) and passing through the through hole three (450), and a clamping rod (480) inserted into the end of the guide rod (470).

3. The flexible composite machining fixture according to claim 2, characterized in that, The clamping mechanism also includes a spring (490) connected between the limiting plate (440) and the clamping rod (480).

4. A flexible composite machining fixture according to claim 2, characterized in that, The partition plate (430) is a matrix grid plate structure, and the grid plate of a single partition plate (430) corresponds to a set of guide rods (470), clamping rods (480) and springs (490).

5. A flexible composite machining fixture according to claim 1, characterized in that, A sealing ring (311) is fixed on the fixing ring (310).

6. A flexible composite machining fixture according to claim 2, characterized in that, A pressure sensor (411) is installed on the inside of the clamping frame (410).

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