A switching device and machine tool for a switching station

Abstract

This invention relates to a switching device for an exchange table, comprising a mounting frame, an exchange robot arm disposed within the mounting frame for switching the exchange table, and a pressure conveying assembly connected to the upper part of the mounting frame. The pressure conveying assembly includes an input end, a connecting section, and an output interface. An oil supply pipeline extending along the connecting section is provided. The input end is connected to the output interface via the oil supply pipeline, and the output interface is correspondingly positioned to the exchange robot arm. During the process of the exchange robot arm lifting the workpiece, a support rod drives the pressure conveying assembly to rise together, ensuring that the air and oil distributed by the exchange center distributor are always transmitted to the workpiece clamps through the pressure conveying assembly, ensuring that the workpiece remains clamped during lifting. Furthermore, due to the arrangement of external oil lines, it is not limited by the internal space of the turntable, allowing for multi-channel oil line arrangement to meet the processing needs of complex workpieces.

Description

Technical Field

[0001] This invention relates to the field of machine tool technology, and more particularly to a switching device for an exchange table and a machine tool. Background Technology

[0002] The application of horizontal machine tools with double-exchange worktables greatly improves machining efficiency. After a workpiece is clamped once, multiple precision machining processes such as milling, drilling, boring, reaming, and tapping can be continuously performed on four sides. In the mass production of parts, automatic fixtures are often required to complete the clamping of workpieces more quickly. In the existing technology, when there are many clamping points in the fixture, the number of oil passage control points in the internal hydraulic circuit cannot meet the requirements of machining. With the external hydraulic circuit, the pressure source of the fixture is briefly disconnected when the worktable is exchanged during the machine tool's worktable exchange operation. At this time, the workpiece clamping action relies entirely on the pressure holding structure of the fixture itself, which is completely unreliable for larger precision-machined parts. Summary of the Invention

[0003] The main objective of this invention is to provide a switching device and machine tool for an exchange table, which solves the problem in the prior art where the exchange table fixture provides a pressure source throughout the entire workpiece exchange process, ensuring that the workpiece exchange process remains stable.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] First aspect: A switching device for a switching station, comprising a mounting frame, a switching robot disposed within the mounting frame, the switching robot being used to switch the switching station, and a pressure delivery assembly connected to the upper part of the mounting frame, the pressure delivery assembly comprising an input end, a connecting section, and an output interface, the input end being connected to an external pressure source, one end of the connecting section being connected to the mounting frame, the connecting section being provided with an oil delivery pipeline extending along the connecting section, the input end being connected to the output interface via the oil delivery pipeline, and the output interface being correspondingly disposed with the switching robot.

[0006] In one embodiment of the present invention, the exchange robot includes an exchange seat that can be raised, lowered, and rotated, and a gripper. The gripper is installed on the drive end of the exchange seat, and the gripper includes a plurality of first support plates, which form an exchange table pick-up and put-down space.

[0007] In one embodiment of the present invention, a support rod is further included. The bottom of the support rod is connected to the claw, the support rod is slidably engaged with the guide structure on the mounting bracket, and the top of the support rod is connected to one end of the connecting section.

[0008] In one embodiment of the present invention, a telescopic connecting rod is also included. The output interface is installed at the other end of the connecting section via the telescopic connecting rod, and the height of the output interface can be adjusted by the telescopic connecting rod.

[0009] In one embodiment of the present invention, an oil pipeline mounting bracket is further included, with a plurality of the oil pipeline mounting brackets fixed on the connecting section, and the oil pipeline being movably disposed on the oil pipeline mounting bracket.

[0010] In one embodiment of the present invention, the connecting section is a telescopic structure, the connecting section includes a plurality of hinged rods that are hinged in sequence, the first end of the connecting section is hinged to the mounting frame, the tail end of the telescopic section can move relative to the first end, and the oil pipeline is connected to the output interface after passing through the tail end.

[0011] In one embodiment of the present invention, the exchange manipulator includes two grippers located on both sides of the mounting frame, and two pressure conveying components located on both sides of the mounting frame, with the output interfaces of the two pressure conveying components respectively corresponding to the two grippers.

[0012] In one embodiment of the present invention, the mounting frame includes a gantry frame and a protective door disposed within the gantry frame.

[0013] Second aspect: A machine tool, comprising a machine tool base, a worktable slidably disposed on the machine tool base; a switching device equipped with an exchange table as described in any one of the claims; the mounting bracket being fixed to the end of the machine tool base.

[0014] In one embodiment of the present invention, a support base and an exchange table are further included. The support base is disposed on the side of the mounting frame away from the machine tool base and located below the chuck. The exchange table is detachably coupled with the worktable and the support base.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The present invention discloses a switching device for an exchange table. During the process of the exchange robot lifting the exchange table, the support rod drives the pressure conveying component to rise together, ensuring that the air and oil distributed by the exchange center distributor are always transmitted to the workpiece fixture through the clamping component, and ensuring that the workpiece is always in a clamped state during the lifting process. During the processing, the connecting section can freely extend and retract to move with the machine tool table, always providing oil pressure to the fixture. In addition, due to the arrangement of external oil circuits, it is not limited by the internal space of the turntable, and multiple oil channels can be arranged to meet the processing of complex workpieces. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 3 .

[0020] Explanation of reference numerals in the attached figures:

[0021] 100. Mounting frame; 101. Gantry frame; 102. Protective door; 200. Exchange robot arm; 201. Exchange seat; 202. Claw; 203. First support plate; 300. Pressure transmission assembly; 301. Input end; 302. Connecting section; 303. Output interface; 304. Oil pipe mounting frame; 400. Support rod; 500. Guide structure; 600. Telescopic connecting rod; 700. Machine tool base; 800. Worktable; 801. Exchange table; 900. Support seat. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0024] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" and "second" may explicitly or implicitly include one or more features.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection or a connection that allows communication between the two components; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components, an indirect connection, or an interaction between two components.

[0027] like Figures 1 to 3 As shown, a switching device for a switching station includes a mounting frame 100 and a switching robot 200 disposed within the mounting frame 100. The switching robot 200 is used to switch the switching station. It also includes a pressure transmission assembly 300 connected to the upper part of the mounting frame 100. The pressure transmission assembly 300 includes an input end 301, a connecting section 302, and an output interface 303. The input end 301 is connected to an external pressure source. One end of the connecting section 302 is connected to the mounting frame 100. An oil supply line is provided on the connecting section 302, extending along the connecting section 302. The input end 301 is connected to the output interface 303 through the oil supply line. The output interface 303 is correspondingly disposed with the switching robot 200.

[0028] The input terminal 301 is a hydraulic pressure distributor, which is connected to an external oil supply device to distribute the hydraulic pressure provided by the oil supply device. The input terminal 301 transmits the distributed hydraulic pressure to the output interface 303 through an oil pipeline. The output interface 303 is connected to the clamp on the exchange table 801. During the switching process of the exchange robot 200 to the mobile exchange table 801, the output interface 303 is always connected to the clamp on the exchange table 801 to ensure that the clamp is in a clamped state and improve the stability of the switching process.

[0029] In one embodiment of the present invention, the exchange robot 200 includes an exchange seat 201 that can be raised, lowered and rotated, and a claw 202. The claw 202 is installed on the drive end of the exchange seat 201. The claw 202 includes a plurality of first support plates 203, and the plurality of first support plates 203 form a pick-and-place space for the exchange table 801.

[0030] The bottom of the exchange seat 201 is a frustum, and a rectangular connecting block is connected to the output end of the exchange seat 201. The bottom of the connecting block is fixed to the output end of the exchange seat 201, and one side wall of the connecting block is fixedly connected to the claw 202. While the exchange seat 201 controls the connecting block to move up and down and rotate, the claw 202 also moves up and down and rotates accordingly. The claw 202 includes two first support plates 203, which are symmetrically arranged on the side wall of the claw 202. The two first support plates 203 form a space for the exchange table 801 to be picked up and put down, and provide support for the exchange table 801.

[0031] In one embodiment of the present invention, a support rod 400 is further included. The bottom of the support rod 400 is connected to the claw 202. The support rod 400 is slidably engaged with the guide structure 500 on the mounting bracket 100. The top of the support rod 400 is connected to one end of the connecting section 302.

[0032] The support rod 400 is cylindrical, and its bottom is fixed to the center of the top of the connecting block. It moves up and down and rotates with the connecting block. A guide structure 500 is provided on the mounting bracket 100. The guide structure 500 is located at the middle of the support rod 400 and has a guide hole in a vertical direction. The middle part of the support rod 400 is disposed within the guide hole, and the outer wall of the support rod 400 slides in conjunction with the guide hole. The top of the support rod 400 is connected to one end of the connecting section 302, so that the connecting section 302 can also move up and down as the support rod 400 moves.

[0033] In one embodiment of the present invention, a telescopic connecting rod 600 is also included. The output interface 303 is installed at one end of the connecting section 302 via the telescopic connecting rod 600. The telescopic connecting rod 600 can adjust the height of the output interface 303.

[0034] The telescopic connecting rod 600 has a hollow center, and its length can be adjusted by telescoping. One end of the telescopic connecting rod 600 is fixedly connected to the output interface 303, and the other end is connected to one end of the connecting section 302. The oil pipeline is connected to the output interface 303 through the telescopic connecting rod 600. The length of the telescopic connecting rod 600 is adjusted by the height of the workpiece being processed, ensuring that the output interface 303 and the workpiece clamp are in a connected state.

[0035] In one embodiment of the present invention, the invention further includes an oil pipeline mounting bracket 304, wherein a plurality of the oil pipeline mounting brackets 304 are fixed on the connecting section 302, and the oil pipeline is movably disposed on the oil pipeline mounting bracket 304.

[0036] The oil pipeline mounting bracket 304 includes an upper mounting part and a lower mounting part. The lower surface of the upper mounting part has several semi-circular opening slots, which correspond to the semi-circular opening slots on the upper surface of the lower mounting part to form circular through holes. The lower mounting part is fixed to the upper surface of the connecting section 302, and several of them are evenly arranged along the length of the connecting section 302. The oil pipeline is an oil pipe, which is mounted on the semi-circular opening slots on the upper surface of each lower mounting part. Then, the upper mounting part corresponding to each lower mounting part is fixed. The diameter of the circular through hole is slightly larger than the diameter of the oil pipe. When the telescopic connecting rod 600 is adjusted, the oil pipe can move normally.

[0037] In one embodiment of the present invention, the connecting section 302 is a telescopic structure, the connecting section 302 includes a plurality of hinged rods that are hinged in sequence, the first end of the connecting section 302 is hinged to the mounting frame 100, the tail end of the telescopic section can move relative to the first end, and the oil pipeline is connected to the output interface 303 after passing through the tail end.

[0038] The telescopic structure can be a telescopic rod, the telescopic rod is hollow inside to form an oil pipeline, the first end of the telescopic rod is connected to the mounting bracket 100, the second end of the telescopic rod is connected to the output interface 303, and the second end of the telescopic rod can extend and retract relative to the first end.

[0039] During the workpiece processing, the processing table is in a back-and-forth moving processing state. The retractable structure ensures that the output interface 303 is always connected to the processing table.

[0040] In one embodiment of the present invention, the exchange robot 200 includes two grippers 202, which are located on both sides of the mounting frame 100. There are two pressure conveying components 300, which are located on both sides of the mounting frame 100.

[0041] The two jaws 202 are symmetrically mounted on the connecting block. The two jaws 202 are respectively provided with two pressure conveying components 300. During operation, each jaw 202 is equipped with an exchange table 801 and a workpiece. The workpiece clamp is connected to the corresponding pressure conveying component 300. The exchange robot 200 rotates and switches the exchange table 801. At the same time as the rotation and switching, the corresponding pressure conveying component 300 is also switched to ensure that the hydraulic pressure of the clamp is always maintained during the rotation and switching process.

[0042] In one embodiment of the present invention, the mounting frame 100 includes a gantry frame 101 and a protective door 102 disposed within the gantry frame 101.

[0043] The exchange robot 200 is installed inside the gantry 101. The exchange robot 200 will not interfere with the gantry 101 during operation. The bottom of the protective door 102 is fixed to the connecting block of the exchange robot 200. As the connecting block moves, it plays a role in blocking the processing chips and cutting fluid during the processing.

[0044] Second aspect: A machine tool, including a machine tool base 700, a worktable 800 slidably disposed on the machine tool base 700; a switching device equipped with the aforementioned exchange table 801; the mounting frame 100 is fixed to the end of the machine tool base 700, and the exchange robot 200 is mounted on the machine tool base 700 and located within the mounting frame 100.

[0045] The switching robot 200 improves processing efficiency by switching workpieces.

[0046] In one embodiment of the present invention, a support base 900 and an exchange table 801 are also included. The support base 900 is disposed on the side of the mounting frame 100 away from the machine tool base 700 and located below the chuck 202. The exchange table 801 is detachably coupled with the worktable 800 and the support base 900.

[0047] By lifting the claws 202 on both sides of the gantry frame 101, the exchange table 801 is separated from the worktable 800 and the support base 900. The workpiece is rotated and switched by turning. The upper surface of the exchange table 801 is provided with a limiting groove for fixing the workpiece fixture to ensure that the fixture will not move during workpiece processing.

[0048] Option 1, such as Figure 1As shown, the exchange robot 200 is installed inside the gantry frame 101. The bottom of the protective door 102 is fixed to the exchange robot 200. The drive end of the exchange seat 201 is connected to a connecting block. A claw 202 is installed on one side wall of the connecting block. The claw 202 includes several first support plates 203, which form the loading and unloading space of the exchange table 801. The bottom of the support rod 400 is fixed to the top of the connecting block, and the middle part of the support rod 400 slides in cooperation with the guide structure 500 on the installation door. The pressure conveying assembly 300 includes an input end 301, a connecting section 302, and an output interface 303. The input end 301 is installed on the top of the gantry frame 101. One end of the connecting section 302 is connected to the top of the support rod 400. An oil pipeline extending along the connecting section 302 is provided on the connecting section 302. The input end 301 is connected to the output interface 303 via an oil pipeline. The output interface 303 is correspondingly arranged with the jaw 202, which supports the exchange table 801. The workpiece clamp on the exchange table 801 is connected to the output interface 303. In use, the connecting block is first lifted by the exchange seat 201. The connecting block drives the jaw 202 to move up and down, thereby moving the exchange table 801 up and down. Since the connecting section 302 is connected to the support rod 400, the support rod 400 also moves up and down when the connecting block moves up and down, ensuring that the output interface 303 on the connecting section 302 and the exchange table 801 are in a relatively stationary state. Then, by rotating the connecting block, the jaw 202, the support rod 400, and the pressure conveying assembly 300 rotate together, ensuring that the clamp is always with the output interface 303 during the rotation. Finally, the workpiece is assembled and disassembled.

[0049] Based on Scheme 1, Scheme 2 is formulated as follows: The drive end of the exchange base 201 is connected to a connecting block. The side walls on both sides of the connecting block are equipped with jaws 202. Each jaw 202 is correspondingly provided with a support rod 400 and a pressure conveying assembly 300. One side jaw 202 is fitted with an unprocessed workpiece, and the other jaw 202 is fitted with a processed workpiece. During exchange, the clamp of each workpiece is connected to the corresponding pressure conveying assembly 300. The exchange base 201 connects the jaws 202 connected to the side walls of the connecting block with... When the workpiece is lifted away from the processing table, the pressure conveying component 300 and the fixture remain connected due to the action of the support rod 400. The exchange seat 201 drives the connecting block to rotate, and the jaws 202 on both sides of the connecting block exchange positions. The support rod 400 and the pressure conveying component 300 corresponding to the jaws 202 also exchange positions. During the exchange, the pressure conveying component 300 and the fixture remain connected. After the exchange is completed, the unprocessed workpiece is processed, the processed workpiece is removed, and the unprocessed workpiece is replaced.

[0050] Based on Option 2, Option 3 is formed: (e.g.) Figures 2 to 3 As shown, the mounting bracket 100 is fixed to the tail end of the machine tool base 700, and the exchange robot 200 is mounted on the machine tool base 700 and located inside the mounting bracket 100; the connecting section 302 is a telescopic structure, and the connecting section 302 includes a plurality of hinged rods that are hinged in sequence. The first end of the connecting section 302 is hinged to the mounting bracket 100, and the tail end of the telescopic section can move relative to the first end. The oil pipeline is connected to the output interface 303 after passing through the tail end. During the workpiece processing, the processing table is in a back-and-forth processing state. Through the telescopic structure, the output interface 303 is always connected to the processing table.

[0051] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0052] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 switching device for a switching station, comprising a mounting frame (100) and a switching robot (200) disposed within the mounting frame (100), the switching robot (200) being used to switch the switching station, characterized in that, It also includes a pressure delivery assembly (300) connected to the upper part of the mounting frame (100). The pressure delivery assembly (300) includes an input end (301), a connecting section (302), and an output interface (303). The input end (301) is connected to an external pressure source. One end of the connecting section (302) is connected to the mounting frame (100). An oil delivery pipeline extending along the connecting section (302) is provided on the connecting section (302). The input end (301) is connected to the output interface (303) through the oil delivery pipeline. The output interface (303) is correspondingly provided with the exchange robot (200). The exchange robot (200) includes an exchange seat (201) that can be lifted and rotated, and a gripper (202). The gripper (202) is installed on the drive end of the exchange seat (201). The gripper (202) includes a plurality of first support plates (203). The plurality of first support plates (203) form a pick-and-place space for the exchange table (801). It also includes a support rod (400), the bottom of which is connected to the claw (202), the top of which is connected to one end of the connecting section (302), and the support rod (400) is slidably engaged with the guide structure (500) on the mounting bracket (100).

2. The switching device for the exchange station as described in claim 1, characterized in that, It also includes a telescopic connecting rod (600), the output interface (303) is installed at the other end of the connecting section (302) via the telescopic connecting rod (600), and the telescopic connecting rod (600) can adjust the height of the output interface (303).

3. The switching device for the exchange station as described in claim 1, characterized in that, The connecting section (302) is a telescopic structure. The connecting section (302) includes a plurality of hinged rods that are hinged in sequence. The first end of the connecting section (302) is hinged to the mounting frame (100), and the tail end can move relative to the first end. The oil pipeline is connected to the output interface (303) after passing through the tail end.

4. The switching device for the exchange station as described in claim 3, characterized in that, The connecting section (302) is a telescopic rod. The telescopic rod is hollow inside and forms the oil pipeline. The first end of the telescopic rod is connected to the mounting bracket (100), and the tail end can move relative to the first end. The tail end of the telescopic rod is connected to the output interface (303).

5. The switching device for the exchange station as described in any one of claims 1-4, characterized in that, The exchange manipulator (200) includes two grippers (202) located on both sides of the mounting frame (100). There are two pressure delivery components (300), located on both sides of the mounting frame (100). The output interfaces (303) of the two pressure delivery components (300) are respectively configured to correspond to the two grippers (202).

6. The switching device for the exchange station as described in claim 5, characterized in that, The mounting frame (100) includes a gantry frame (101) and a protective door (102) disposed within the gantry frame (101).

7. A machine tool, comprising a machine tool base (700) and a worktable (800) slidably disposed on the machine tool base (700); characterized in that, The switching device of the exchange station according to any one of claims 1-6 is installed; the mounting bracket (100) is fixed to the end of the machine tool base (700).

8. The machine tool as described in claim 7, characterized in that, It also includes a support base (900) and an exchange table (801). The support base (900) is located on the side of the mounting frame (100) away from the machine tool base (700) and below the chuck (202). The exchange table (801) is detachably coupled with the worktable (800) and the support base (900).

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