Automatic positioning hydraulic clamping mechanism for machining

Abstract

The utility model relates to the technical field of machining and manufacturing, in particular to an automatic positioning hydraulic clamping mechanism for machining, which comprises a positioning device and a pull-down clamping device arranged below the positioning device. The positioning device comprises a left side centering clamping block and a right side centering clamping block, a first floating positioning block is arranged below the left side centering clamping block, a second floating positioning block is arranged below the right side centering clamping block, and the pull-down clamping device comprises a pull-down clamping block and a pull-down mechanism arranged below the pull-down clamping block. A plurality of products can be machined each time, clamping points completely avoid parts needing to be machined, most machining contents can be completed only through one-time clamping and positioning, accumulated positioning errors caused by repeated positioning are reduced, product stability is improved, quality risks are reduced, meanwhile, the number of machining equipment and the occupied area of the equipment are reduced, and the machining efficiency is improved. And the investment cost is saved for factories.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing and manufacturing, in particular to an automatic positioning hydraulic clamping mechanism for mechanical processing. Background Art

[0002] Automation and mass production of mechanical processing and manufacturing are the current trends. More and more factories and assembly lines are beginning to introduce intelligent equipment and robots to complete production. Automated production places higher demands on equipment and clamping and positioning mechanisms. High-precision automatic positioning clamping mechanisms with pre-positioning functions are becoming more and more widely used.

[0003] Chinese Patent: A hydraulic automatic centering positioning clamping device, authorization announcement number: CN 114559278B, authorization announcement date: February 24, 2023. The hydraulic automatic centering positioning clamping device of the present invention has strong versatility. For parts of different structures and sizes, the number of hydraulic automatic centering positioning clamping devices can be flexibly selected, and the clamping mechanism can be replaced to achieve adaptation. For different clamping force requirements, it can be achieved by adjusting the pressure of the hydraulic system connected to the hydraulic motor, but it is impossible to process multiple products at a time, and the processing efficiency is low; at the same time, the clamping point needs to contact the processed part, and multiple clamping and positioning are required. Repeated positioning is likely to lead to cumulative positioning errors, reduce product stability, increase appearance defective rate, and increase processing costs. Therefore, it is necessary to propose an automatic positioning hydraulic clamping mechanism for mechanical processing to solve the above problems. Utility Model Content

[0004] In order to solve the above problems, the utility model provides an automatic positioning hydraulic clamping mechanism for mechanical processing, including multiple processing units, the multiple processing units have the same structure and are connected in parallel, and connecting components are provided on both sides of the multiple processing units after being combined, and are connected to a fixed seat through the connecting components. The processing unit includes a positioning device and a pull-down clamping device arranged below the positioning device, and an anti-error device is provided on one side of the positioning device. The positioning device includes a left-side centering clamp block and a right-side centering clamp block, a first floating positioning block is provided below the left-side centering clamp block, and a second floating positioning block is provided below the right-side centering clamp block, and the pull-down clamping device includes a pull-down clamping block and a pull-down mechanism arranged below the pull-down clamping block.

[0005] A further improvement of the utility model is that the left-side centering clamp and the right-side centering clamp are both connected via a fixing seat, the fixing seat is arranged above the workbench, and the left-side centering clamp and the right-side centering clamp are arranged for clamping the workpiece for processing.

[0006] A further improvement of the utility model is that the first floating positioning block and the second floating positioning block are both installed on the upper end of the step surface of the fixed seat through the mounting block. The first floating positioning block and the second floating positioning block are arranged to play a floating positioning role and are used to protect the telescopic structure arranged on the processing workpiece.

[0007] A further improvement of the utility model is that the pull-down mechanism includes a pull-down rod connected to the pull-down clamping block, a hydraulic connector is provided below the pull-down rod, a first connecting rod is provided on one side of the hydraulic connector, and the first connecting rod is connected to a first hydraulic cylinder.

[0008] A further improvement of the utility model is that a second connecting rod is connected to the other side of the hydraulic connecting piece, and a second hydraulic cylinder is connected to the side of the second connecting rod away from the pull-down mechanism. The first hydraulic cylinder and the second hydraulic cylinder are provided to achieve the function of clamping and releasing the workpiece.

[0009] A further improvement of the utility model is that the pull-down clamping block is arranged above the workbench through a fixing piece.

[0010] A further improvement of the utility model is that the longitudinal section of the pull-down clamping block is a wedge-shaped structure, and the provision of the wedge-shaped structure can facilitate the clamping of the workpiece and improve the processing efficiency and processing stability.

[0011] A further improvement of the utility model is that the connecting component comprises a mounting seat and a mounting panel arranged on the side wall of the mounting seat, the longitudinal section of the mounting panel is a circular structure, and the overall structure is mounted on the processing seat through the mounting panel.

[0012] Beneficial effects of the utility model:

[0013] The utility model can complete the processing of multiple products at the same time, and the clamping point of the pull-down clamping block avoids the parts that need to be clamped for processing, and only needs to be clamped and positioned once to complete most of the processing content, reducing the cumulative positioning error caused by repeated positioning, improving processing efficiency and stability during processing, reducing quality risks, and saving processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the processing unit structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the workbench of the utility model;

[0018] Figure 5 It is a side sectional structural schematic diagram of the utility model.

[0019] Figure markings: 1-processing unit, 2-connecting component, 3-fixed seat, 4-positioning device, 5-pull-down clamping device, 6-error-proofing device, 7-left-side centering clamp, 8-right-side centering clamp, 9-first floating positioning block, 10-second floating positioning block, 11-pull-down clamping block, 12-pull-down mechanism, 13-fixed seat, 14-workbench, 15-processed workpiece, 16-mounting block, 17-step surface, 18-telescopic structure, 19-pull-down rod, 20-hydraulic connecting piece, 21-first connecting rod, 22-first hydraulic cylinder, 23-second connecting rod, 24-second hydraulic cylinder, 25-fixing piece, 26-mounting panel. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] The utility model relates to an automatic positioning hydraulic clamping mechanism for mechanical processing, comprising a plurality of processing units 1, wherein the plurality of processing units 1 are identical and connected in parallel, and both sides of the plurality of processing units 1 after being combined are provided with connecting components 2, and are connected to a fixing seat 3 through the connecting components 2, and the processing unit 1 comprises a positioning device 4 and a pull-down clamping device 5 arranged below the positioning device 4, and one side of the positioning device 4 is provided with an error prevention device 6, and the positioning device 4 comprises a left-side centering clamping block 7 and a right-side centering clamping block 8, and a first floating positioning block 9 is arranged below the left-side centering clamping block 7, and a second floating positioning block 10 is arranged below the right-side centering clamping block 8, and the pull-down clamping device 5 comprises a pull-down clamping block 11 and a pull-down mechanism 12 arranged below the pull-down clamping block 11; the left-side centering clamping block 7 and the right-side centering clamping block 8 are provided with a first floating positioning block 9 ...; the pull- The blocks 8 are all connected through a fixed seat 13, and the fixed seat 13 is arranged above the workbench 14. The left-side centering clamp 7 and the right-side centering clamp 8 are arranged for clamping the workpiece for processing; the manipulator places three workpieces 15 for processing on the automatic positioning hydraulic clamping mechanism at a time, and the left-side centering clamp 7 and the right-side centering clamp 8 pre-position the workpiece 15 for processing; the hydraulic oil circuit is controlled by a program to make the left-side centering clamp 7 and the right-side centering clamp 8 act simultaneously, so that the workpiece 15 is automatically centered; the first floating positioning block 9 and the second floating positioning block 10 are both installed on the upper end of the step surface 17 of the fixed seat 13 through the mounting block 16, and the first floating positioning block 9 and the second floating positioning block 10 are arranged to play a floating positioning role, which is used to protect the telescopic structure 18 arranged on the workpiece 15 for processing.

[0022] The pull-down mechanism 12 includes a pull-down rod 19 connected to the pull-down clamping block 11, and a hydraulic connector 20 is provided below the pull-down rod 19. A first connecting rod 21 is provided on one side of the hydraulic connector 20, and the first connecting rod 21 is connected to a first hydraulic cylinder 22; the other side of the hydraulic connector 20 is connected to a second connecting rod 23, and the side of the second connecting rod 23 away from the pull-down mechanism 12 is connected to a second hydraulic cylinder 24. The first hydraulic cylinder 22 and the second hydraulic cylinder 24 are provided to clamp and release the workpiece 15.

[0023] The pull-down clamping block 11 is arranged above the workbench 14 through a fixing part 25. The longitudinal section of the pull-down clamping block 11 is a wedge-shaped structure. The hydraulic oil circuit is controlled by a program to use the middle pull-down block to pull down the processing workpiece 15. After pulling it down to the bottom, the wedge-shaped structure is used to self-lock and clamp the processing workpiece 15; the setting of the wedge-shaped structure can facilitate the clamping of the processing workpiece 15, improve the processing efficiency and processing stability; the connecting component 2 includes a fixed seat 3 and a mounting panel 26 arranged on the side wall of the fixed seat 3, the longitudinal section of the mounting panel 26 is a circular structure, and the overall structure is mounted on the processing seat of the mechanical equipment through the mounting panel 26.

[0024] Working principle:

[0025] The positioning hydraulic clamping mechanism uses the left and right self-centering clamping mechanisms to pre-position the workpiece 15. The workpiece 15 only needs to be roughly placed in the self-centering mechanism. The left centering clamp block 7 and the right centering clamp block 8 are automatically centered by hydraulic means to avoid poor processing caused by manual or robot clamping. The wedge-shaped structure on the pull-down mechanism 12 clamped in the middle cooperates with the inclined surface of the workpiece 15 itself, and has a clamping force while pulling the workpiece 15 downward. After clamping, the wedge-shaped structure is used to self-lock and fix to enhance the clamping rigidity. This mechanism includes a floating positioning mechanism with airtightness detection. After the workpiece 15 is installed in place, it fits with the first floating positioning block 9 and the second floating positioning block 10. After automatic clamping, the product presses down the first floating positioning block 9 and the second floating positioning block 10. The floating positioning is qualified for airtightness, otherwise the equipment automatically alarms to avoid poor clamping leading to product scrapping and equipment processing collision. This set of structures includes the error-proofing device 6. The error-proofing device 6 is designed by utilizing the asymmetry of the product. If the workpiece is installed upside down and interferes with this tooling, the equipment alarms and stops.

[0026] It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which are all within the protection scope of the utility model.

Claims

1. An automatic positioning hydraulic clamping mechanism for machining, characterized in that: It comprises a plurality of processing units, which have the same structure and are connected in parallel, and connecting parts are provided on both sides of the combined processing units, which are connected to the fixed seat through the connecting parts, and the processing units comprise a positioning device and a pull-down clamping device arranged below the positioning device, and an anti-error device is provided on one side of the positioning device, and the positioning device comprises a left-side centering clamping block and a right-side centering clamping block, a first floating positioning block is provided below the left-side centering clamping block, and a second floating positioning block is provided below the right-side centering clamping block, and the pull-down clamping device comprises a pull-down clamping block and a pull-down mechanism arranged below the pull-down clamping block.

2. The automatic positioning hydraulic clamping mechanism for machining according to claim 1 is characterized in that: The left-side centering clamp block and the right-side centering clamp block are both connected via a fixing seat, and the fixing seat is arranged above the workbench.

3. The automatic positioning hydraulic clamping mechanism for machining according to claim 1 is characterized in that: The first floating positioning block and the second floating positioning block are both mounted on the upper end of the step surface of the fixing seat through mounting blocks.

4. The automatic positioning hydraulic clamping mechanism for machining according to claim 1, characterized in that: The pull-down mechanism comprises a pull-down rod connected to the pull-down clamping block, a hydraulic connector is provided below the pull-down rod, a first connecting rod is provided on one side of the hydraulic connector, and the first connecting rod is connected to a first hydraulic cylinder.

5. The automatic positioning hydraulic clamping mechanism for machining according to claim 4, characterized in that: The other side of the hydraulic connector is connected to a second connecting rod, and the side of the second connecting rod away from the pull-down mechanism is connected to a second hydraulic cylinder.

6. The automatic positioning hydraulic clamping mechanism for machining according to claim 1, characterized in that: The pull-down clamping block is arranged above the workbench through a fixing piece.

7. The automatic positioning hydraulic clamping mechanism for machining according to claim 1, characterized in that: The longitudinal section of the pull-down clamping block is a wedge-shaped structure.

8. The automatic positioning hydraulic clamping mechanism for machining according to claim 1 is characterized in that: The connecting component comprises a mounting seat and a mounting panel arranged on a side wall of the mounting seat, and the longitudinal section of the mounting panel is a circular structure.

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