Tool clamp for metal product machining

Abstract

The utility model relates to a work fixture for processing metal products, which belongs to the technical field of work fixtures and comprises a metal product processing platform, a transverse lead screw transmission mechanism, a vertical lead screw transmission mechanism, a fixture bracket, a positioning clamping plate, a hydraulic locking unit, a pressure detection unit and a control host, and the transverse lead screw transmission mechanism is mounted on the metal product processing platform. The clamp is provided with the hydraulic locking unit and the pressure detection unit, the clamping process of the clamp can be divided into two sections, the first section provides initial clamping force through the bottom lead screw driving structure, the second section achieves high-pressure locking through the hydraulic locking unit, and therefore the clamping force needs to be uniform and sufficient, a workpiece is prevented from loosening or displacing in the machining process, and the machining efficiency is improved. Meanwhile, deformation caused by too large clamping force can be avoided, and therefore safe and stable machining of metal products is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, and in particular to a tooling and fixture for processing metal products. Background Technology

[0002] In the metal product processing process, it is necessary to ensure the stability, accuracy, efficiency and safety of the processing. For this purpose, tooling fixtures are needed to stably position the metal products, and the clamping force must be uniform and sufficient to prevent the workpiece from loosening or shifting during processing, while avoiding deformation caused by excessive clamping force.

[0003] A search revealed that Chinese Patent CN202221895056.4 discloses a metal product processing fixture, which solves the problems of current metal product processing fixtures being inconvenient to automatically adjust according to workpiece size and inconvenient to securely clamp workpieces and adjust angles. It achieves the purpose of making the metal product processing fixture convenient to automatically adjust according to workpiece size and convenient to securely clamp workpieces and adjust angles.

[0004] The above-mentioned technical solutions have the following drawbacks: although such tooling fixtures can stably clamp metal products through the bottom screw drive structure, it is inconvenient to adjust the longitudinal support position according to the actual volume of the metal components during use, and the clamping force control is coarse: relying on manual experience for adjustment, it is easy to cause workpiece deformation or clamping failure. In order to improve the applicability of tooling fixtures and ensure clamping force, a tooling fixture for metal product processing is proposed. It can realize the position adjustment of both horizontal and vertical angles, so as to clamp and position the items placed on the platform. It is equipped with a hydraulic locking unit and a pressure detection unit. The clamping process can be divided into two stages. The first stage provides the initial clamping force through the bottom screw drive structure, and the second stage achieves high-pressure locking through the hydraulic locking unit. This ensures that the clamping force is uniform and sufficient, preventing the workpiece from loosening or shifting during processing, and avoiding deformation due to excessive clamping force, thereby ensuring the safe and stable processing of metal products.

[0005] In view of this, this work improves and solves the above problems. Through dedicated research and application of theoretical principles, a technical solution with a reasonable design that can effectively improve the above defects has finally been proposed.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the general background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] This utility model provides a tooling fixture for processing metal products, which solves the problems mentioned in the background. It is suitable for processing metal products of different volumes, and can ensure that the clamping force is uniform and sufficient to prevent the workpiece from loosening or shifting during processing. At the same time, it can avoid deformation caused by excessive clamping force, thereby ensuring the safe and stable processing of metal products.

[0008] The present invention provides the following solution to the above-mentioned technical problems: A tooling fixture for metal product processing includes a metal product processing platform, a horizontal lead screw transmission mechanism, a vertical lead screw transmission mechanism, a fixture bracket, a positioning clamp, a hydraulic locking unit, a pressure detection unit, and a control host. The horizontal lead screw transmission mechanism is installed on the metal product processing platform. Two vertical lead screw transmission mechanisms are provided. The horizontal lead screw transmission mechanism adjusts the horizontal position of the vertical lead screw transmission mechanism, and the vertical lead screw transmission mechanism adjusts the longitudinal position of the fixture bracket. The hydraulic locking unit is installed on the fixture bracket. The pressure detection unit is connected to the positioning clamp. The control host uses a microcontroller to receive signals from the pressure detection unit and is connected to the signals of the horizontal lead screw transmission mechanism, the vertical lead screw transmission mechanism, and the hydraulic locking unit.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the transverse lead screw transmission mechanism includes a first brake servo motor, a reducer, a synchronous pulley, a synchronous belt, a bidirectional lead screw, a first lead screw nut, a load-bearing rod, and a load-bearing slider. The drive end of the first brake servo motor is connected to the reducer. The output end of the reducer and the bidirectional lead screw are both fixedly equipped with synchronous pulleys. The synchronous pulleys on both sides are connected by a synchronous belt. The bidirectional lead screw is connected to the first lead screw nut. The first lead screw nut is fixedly connected to the load-bearing slider.

[0011] Furthermore, the load-bearing slider has a sliding hole corresponding to the load-bearing rod, the inner wall of the sliding hole is slidably connected to the load-bearing rod, the bidirectional lead screw is rotatably connected to the metal product processing platform, and the load-bearing slider is fixedly connected to the vertical lead screw transmission mechanism.

[0012] Furthermore, the vertical lead screw transmission mechanism has a T-shaped structure.

[0013] Furthermore, the vertical screw transmission mechanism includes a device bracket, a second brake servo motor, a ball screw, and a second screw nut. The ball screw is rotatably connected to the device bracket, the drive end of the second brake servo motor is fixedly connected to the ball screw, the ball screw and the second screw nut are connected in a transmission manner, and the second screw nut is fixedly connected to the clamp bracket.

[0014] Furthermore, the clamp bracket is provided with a mounting groove, and the hydraulic locking unit is installed in the mounting groove.

[0015] Furthermore, the hydraulic locking unit includes a hydraulic cylinder array, a miniature hydraulic pump station, and a drive plate. The miniature hydraulic pump station is the power source for the hydraulic cylinder array, and the drive end of the hydraulic cylinder array is fixedly connected to the drive plate.

[0016] Furthermore, the pressure detection unit is mounted on the drive plate, and the pressure detection unit consists of multiple pressure sensors. A telescopic dust cover is installed in the gap between the drive plate and the positioning clamp and the fixture bracket.

[0017] This utility model provides a tooling fixture for processing metal products, which has the following advantages:

[0018] 1. It can achieve position adjustment in both horizontal and vertical directions, thereby adjusting to the accurate position for clamping and positioning items placed on the platform, suitable for processing metal products of different sizes;

[0019] 2. Equipped with a hydraulic locking unit and a pressure detection unit, the clamping process can be divided into two stages. The first stage provides initial clamping force through the bottom lead screw drive structure, and the second stage achieves high-pressure locking through the hydraulic locking unit. This ensures that the clamping force is uniform and sufficient, preventing the workpiece from loosening or shifting during processing. At the same time, it can avoid deformation caused by excessive clamping force, thereby ensuring the safe and stable processing of metal products.

[0020] 3. Such fixtures with pressure detection function are particularly suitable for high-difficulty machining tasks in aerospace, precision mold and other fields, and can effectively reduce the amount of deformation during machining of thin-walled workpieces.

[0021] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0022] 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, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0023] Figure 1 A front view of a tooling fixture for processing metal products according to an embodiment of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of a tooling fixture for processing metal products according to an embodiment of the present invention;

[0025] Figure 3This is a schematic diagram of the structure of a metal product processing platform in a tooling fixture for metal product processing according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of a hydraulic locking unit in a tooling fixture for processing metal products, provided in an embodiment of the present invention;

[0027] Figure 5 This is a top view of a tooling fixture for processing metal products according to an embodiment of the present invention.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1. Metal product processing platform; 2. Horizontal lead screw transmission mechanism; 201. No. 1 brake servo motor; 202. Reducer; 203. Synchronous pulley; 204. Synchronous belt; 205. Bidirectional lead screw; 206. No. 1 lead screw nut; 207. Load-bearing rod; 208. Load-bearing slider; 3. Vertical lead screw transmission mechanism; 301. Device bracket; 302. No. 2 brake servo motor; 303. Ball screw; 304. No. 2 lead screw nut; 4. Fixture bracket; 5. Positioning clamp; 6. Hydraulic locking unit; 601. Hydraulic cylinder array; 602. Miniature hydraulic pump station; 603. Drive plate; 7. Pressure detection unit; 8. Telescopic dust cover. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-5 The principles and features of this utility model are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0031] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] like Figure 1-5 As shown, a tooling fixture for metal product processing includes a metal product processing platform 1, a horizontal lead screw transmission mechanism 2, a vertical lead screw transmission mechanism 3, a fixture bracket 4, a positioning clamping plate 5, a hydraulic locking unit 6, a pressure detection unit 7, and a control host. The horizontal lead screw transmission mechanism 2 is installed on the metal product processing platform 1. There are two vertical lead screw transmission mechanisms 3. The horizontal lead screw transmission mechanism 2 adjusts the horizontal position of the vertical lead screw transmission mechanism 3, and the vertical lead screw transmission mechanism 3 adjusts the longitudinal position of the fixture bracket 4. The hydraulic locking unit 6 is installed on the fixture bracket 4. The pressure detection unit 7 is connected to the positioning clamping plate 5. The control host uses a microcontroller to receive signals from the pressure detection unit 7 and connects to the signals of the horizontal lead screw transmission mechanism 2, the vertical lead screw transmission mechanism 3, and the hydraulic locking unit 6. The vertical lead screw transmission mechanism 3 has a T-shaped structure.

[0034] like Figure 2 As shown, the transverse screw transmission mechanism 2 includes a first brake servo motor 201, a reducer 202, a synchronous pulley 203, a synchronous belt 204, a bidirectional screw 205, a first screw nut 206, a load-bearing rod 207, and a load-bearing slider 208. The drive end of the first brake servo motor 201 is connected to the reducer 202. The output end of the reducer 202 and the bidirectional screw 205 are both fixedly equipped with synchronous pulleys 203. The synchronous pulleys 203 on both sides are connected by a synchronous belt 204. The bidirectional screw 205 is connected to the first screw nut 206. The first screw nut 206 is fixedly connected to the load-bearing slider 208. The load-bearing slider 208 has a sliding hole corresponding to the load-bearing rod 207. The inner wall of the sliding hole is slidably connected to the load-bearing rod 207. The bidirectional screw 205 is rotatably connected to the metal product processing platform 1. The load-bearing slider 208 is fixedly connected to the vertical screw transmission mechanism 3.

[0035] like Figure 2 As shown, the vertical screw transmission mechanism 3 includes a device bracket 301, a second brake servo motor 302, a ball screw 303, and a second screw nut 304. The ball screw 303 is rotatably connected to the device bracket 301. The drive end of the second brake servo motor 302 is fixedly connected to the ball screw 303. The ball screw 303 and the second screw nut 304 are connected in a transmission manner. The second screw nut 304 is fixedly connected to the clamp bracket 4.

[0036] like Figure 4As shown, the fixture bracket 4 is provided with a mounting groove, and the hydraulic locking unit 6 is installed in the mounting groove. The hydraulic locking unit 6 includes a hydraulic cylinder array 601, a micro hydraulic pump station 602, and a drive plate 603. The micro hydraulic pump station 602 is the power source of the hydraulic cylinder array 601. The drive end of the hydraulic cylinder array 601 is fixedly connected to the drive plate 603. The pressure detection unit 7 is installed on the drive plate 603. The pressure detection unit 7 is composed of multiple pressure sensors. A telescopic dust cover 8 is installed at the gap between the drive plate 603, the positioning clamp 5, and the fixture bracket 4.

[0037] The preferred embodiment of this utility model is as follows:

[0038] Taking the machining of automotive steering knuckles as an example

[0039] Place the car steering knuckle on the top of the metal product processing platform 1, start the first brake servo motor 201 to rotate the reducer 202, and the synchronous pulley 203 is connected by the synchronous belt 204, so that the rotation of the bidirectional lead screw 205 can drive the first lead screw nut 206 to move, and the load-bearing slider 208 can drive the two vertical lead screw transmission mechanisms 3 to move to the opposite side, so that it can be clamped and positioned by the positioning clamp 5.

[0040] A pressure detection unit 7 is provided at the gap between the drive plate 603 and the positioning clamping plate 5. The pressure detection unit 7 can detect the clamping force in real time. When the clamping force on both sides is stabilized at 1.2MPa, the workpiece is initially fixed. After stabilization, the hydraulic locking unit 6 is activated to extend, so that the drive plate 603 can drive the positioning clamping plate 5 to further clamp and position. The final locking is completed at 15MPa. The pressure detection unit 7 can detect the clamping force in real time.

[0041] The data flow path for clamping and positioning by the controller is as follows:

[0042] Pressure detection unit → Signal conditioning → Controller → Miniature hydraulic pump station → Hydraulic actuator;

[0043] The specific algorithm flow is as follows;

[0044] A [Pressure Sensor] --> |Signal|B [Controller]

[0045] B -->|Stop Signal|C [Motor Driver]

[0046] B --> |Extend signal|D [Hydraulic solenoid valve]

[0047] C --> E [Motor stops]

[0048] D-->F [Hydraulic rod extends];

[0049] Control logic:

[0050] When the pressure is ≥1.2MPa:

[0051] Send a high level to the motor stop port

[0052] Send a high level to the hydraulic solenoid valve port

[0053] otherwise:

[0054] Motor stop signal = low level (operation allowed)

[0055] Hydraulic solenoid valve signal = low level (retract / hold);

[0056] Motor control:

[0057] graph LR

[0058] PLC_Q0.0 --> |High Level|Relay_Coil

[0059] Relay_Coil --> Relay_Switch

[0060] Relay_Switch-->Motor_Driver_EN

[0061] Motor_Driver_EN --> |High level|Motor_Stop;

[0062] Hydraulic rod control:

[0063] graph LR

[0064] PLC_Q0.1 --> |High Level|Relay_Coil

[0065] Relay_Coil --> Relay_Switch

[0066] Relay_Switch-->Hydraulic_Valve

[0067] Hydraulic_Valve --> |Power On|Rod_Extend;

[0068] Anti-vibration processing: after detecting pressure ≥1.2MPa, a 50ms delay is made to confirm signal stability before proceeding;

[0069] Interlocking logic locks the motor start signal when the hydraulic rod extends to avoid conflict;

[0070] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A tooling fixture for processing metal products, comprising a metal product processing platform (1), a horizontal lead screw transmission mechanism (2), a vertical lead screw transmission mechanism (3), a fixture bracket (4), a positioning clamp (5), a hydraulic locking unit (6), a pressure detection unit (7), and a control host, characterized in that: The horizontal lead screw transmission mechanism (2) is installed on the metal product processing platform (1). There are two vertical lead screw transmission mechanisms (3). The horizontal lead screw transmission mechanism (2) adjusts the horizontal position of the vertical lead screw transmission mechanism (3). The vertical lead screw transmission mechanism (3) adjusts the longitudinal position of the fixture bracket (4). The hydraulic locking unit (6) is installed on the fixture bracket (4). The pressure detection unit (7) is connected to the positioning clamp (5). The control host uses a single-chip microcomputer to receive the signal from the pressure detection unit (7) and connects the signals of the horizontal lead screw transmission mechanism (2), the vertical lead screw transmission mechanism (3), and the hydraulic locking unit (6).

2. The tool clamp for processing a metal product according to claim 1, wherein The transverse lead screw transmission mechanism (2) includes a first brake servo motor (201), a reducer (202), a synchronous pulley (203), a synchronous belt (204), a bidirectional lead screw (205), a first lead screw nut (206), a load-bearing rod (207), and a load-bearing slider (208). The drive end of the first brake servo motor (201) is connected to the reducer (202). The output end of the reducer (202) and the bidirectional lead screw (205) are both fixedly equipped with synchronous pulleys (203). The synchronous pulleys (203) on both sides are connected by a synchronous belt (204). The bidirectional lead screw (205) is connected to the first lead screw nut (206). The first lead screw nut (206) is fixedly connected to the load-bearing slider (208).

3. The tool holder according to claim 2, wherein The load-bearing slider (208) has a sliding hole corresponding to the load-bearing rod (207), and the inner wall of the sliding hole is slidably connected to the load-bearing rod (207). The bidirectional screw (205) is rotatably connected to the metal product processing platform (1), and the load-bearing slider (208) is fixedly connected to the vertical screw transmission mechanism (3).

4. The tool holder according to claim 1, wherein The vertical lead screw transmission mechanism (3) has a T-shaped structure.

5. The tool holder according to claim 1, wherein The vertical screw transmission mechanism (3) includes a device bracket (301), a second brake servo motor (302), a ball screw (303), and a second screw nut (304). The ball screw (303) is rotatably connected to the device bracket (301). The drive end of the second brake servo motor (302) is fixedly connected to the ball screw (303). The ball screw (303) and the second screw nut (304) are connected in a transmission manner. The second screw nut (304) is fixedly connected to the clamp bracket (4).

6. The tool holder according to claim 1, wherein The clamp bracket (4) is provided with a mounting groove, and the hydraulic locking unit (6) is installed in the mounting groove.

7. The tool holder according to claim 1, wherein The hydraulic locking unit (6) includes a hydraulic cylinder array (601), a micro hydraulic pump station (602), and a drive plate (603). The micro hydraulic pump station (602) is the power source of the hydraulic cylinder array (601), and the drive end of the hydraulic cylinder array (601) is fixedly connected to the drive plate (603).

8. The tool holder according to claim 1, wherein The pressure detection unit (7) is mounted on the drive plate (603). The pressure detection unit (7) consists of multiple pressure sensors. A telescopic dust cover (8) is installed in the gap between the drive plate (603), the positioning clamp (5), and the clamp bracket (4).

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