Workpiece positioning assembly for CNC (computer numerical control) machine tool

Abstract

The utility model discloses a workpiece positioning assembly for a CNC (computer numerical control) machine tool, which comprises a machine body, a frame body is fixedly connected above the machine body, a working plate is arranged above the machine body, a machine tool drilling tool is arranged in the frame body, a fixed block and a support plate are fixedly connected above the working plate, a movable plate is slidably connected in the working plate, and the movable plate is fixedly connected with the machine tool drilling tool. A threaded rod is in threaded connection with the interior of the supporting plate, and one end of the threaded rod is rotationally connected with a limiting block. Through the arrangement of the positioning structure, the moving plate, the limiting block, the protection plate and the concave plate, the positioning assembly enables the protection plate, the moving plate and the limiting block to achieve the function of rapid assembly through the cooperation of the clamping plate, the spring and the concave plate, and the protection plate can play a role in protecting the surface of the threaded rod; sprayed cooling liquid is prevented from remaining on the surface of the threaded rod, the phenomenon that the surface of the threaded rod is oxidized and rusted is prevented, and therefore the positioning precision of the workpiece is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece positioning, in particular to a workpiece positioning component for a CNC numerically controlled machine tool. Background Art

[0002] CNC machine tools, or computer numerical control machine tools, are highly automated and precision machine tools widely used in the manufacturing industry. CNC machining involves issuing commands through a control system to cause the tool to perform various predetermined movements, expressing technical requirements such as the workpiece's shape and size in the form of numbers and letters. During the machining process, CNC machine tools clamp the workpiece using a positioning assembly, which then uses the tool to grind the workpiece. During the grinding process, a built-in cooling device sprays coolant on the contact surface between the tool and the tool. Most current positioning assemblies use a movable clamping block and a fixed block to position the workpiece. The movable clamping block is mainly moved by a motor-driven bolt. The cooling device sprays coolant on the contact surface between the tool and the workpiece to reduce temperature and wear. However, most positioning assemblies lack protective structures, and the surface of the threaded rod is easily left with liquid due to the spraying of coolant. If not cleaned in time, the threaded rod surface is prone to oxidation and rust, which affects the positioning accuracy of the workpiece. Utility Model Content

[0003] The purpose of the present utility model is to provide a workpiece positioning assembly for a CNC machine tool to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a workpiece positioning assembly for a CNC numerical control machine tool, comprising a machine body, a frame body fixedly connected to the top of the machine body, a working plate provided on the top of the machine body, a machine tool drilling tool provided in the frame body, a fixed block and a support plate fixedly connected to the top of the working plate, a movable plate slidably connected in the working plate, a threaded rod threaded in the support plate, one end of the threaded rod rotatably connected to a limiting block, a positioning structure provided above the limiting block, the positioning structure connected to the top of the movable plate, a lubrication structure externally connected to the support plate, and a motor fixedly connected to one side of the movable plate;

[0005] A protective plate is slidably connected to the support plate, and concave plates are connected to both sides of the protective plate. A card slot is provided in the concave plate, and the concave plate is clamped with the positioning structure. The positioning structure includes a card plate and a fixed plate. Two auxiliary plates are connected to one side of the fixed plate. A vertical plate is fixedly connected to the top of the auxiliary plate. A moving rod is fixedly connected to one side of the vertical plate, and a spring is connected to the outer shell of the moving rod.

[0006] As a further preferred embodiment of the present technical solution, a support leg is provided at the bottom of the machine body, a frame door is slidably connected to the frame body, the movable plate and the positioning structure above the limit block are identical and opposite in position, and the output shaft of the motor is connected to the threaded rod.

[0007] As a further preferred embodiment of the present technical solution, the motor drives the threaded rod to rotate forward and reverse, one side of the protective plate is clamped in the limit block, and the other side of the protective plate is clamped in the movable plate.

[0008] As a further preferred embodiment of the present technical solution, the auxiliary plate is slidably connected above the limiting block, one side of the clamping plate is connected to the fixed plate, and the clamping plate is clamped in the concave plate.

[0009] As a further preferred embodiment of the present technical solution, the movable rod is slidably connected above the limiting block, and the vertical plate is connected to the side surface of the limiting block via a spring.

[0010] As a further preferred embodiment of the present technical solution, the lubrication structure includes a lubrication box and a guide plate, the guide plate is fixedly connected to the side of the support plate, the lubrication box is fixedly connected above the support plate, and a connecting pipe is connected to one side of the lubrication box.

[0011] As a further preferred embodiment of the present technical solution, one end of the connecting pipe is connected to the guide plate, and an oil outlet pipe is provided below the guide plate.

[0012] The utility model provides a workpiece positioning assembly for a CNC machine tool, which has the following beneficial effects:

[0013] (1) The utility model sets a positioning structure, a movable plate, a limit block, a protective plate and a concave plate, and applies a pulling force to the card plate through the fixed plate. When the auxiliary plate moves, the movable rod will also slide, and the vertical plate will drive the spring to deform. When the position adjustment of the card plate is completed, the protective plate will be clamped into the movable plate and the limit block. When the protective plate is fully fitted with the movable plate and the limit block, the fixed plate is released, and the card plate will be reset by the action of the spring and then clamped in the card slot. The positioning component cooperates with the card plate, the spring and the concave plate, so that the protective plate, the movable plate and the limit block can be quickly assembled, and the protective plate can protect the surface of the threaded rod to avoid the sprayed coolant from remaining on the surface of the threaded rod, and prevent the surface of the threaded rod from oxidation and rust, thereby ensuring the positioning accuracy of the workpiece.

[0014] (2) The utility model provides a lubrication structure, and the water pump built into the lubrication box delivers the lubricating oil to the guide plate through the connecting pipe, and then the oil outlet pipe evenly sprinkles the lubricating oil in the guide plate onto the surface of the threaded rod, thereby being able to lubricate the surface of the threaded rod regularly and quantitatively. The regular and quantitative lubrication can reduce the friction between the moving parts, reduce wear, and extend the service life of the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the working plate of the utility model;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the explosion protection plate of the utility model;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the positioning structure of the utility model;

[0019] In the figure: 1. Machine body; 2. Frame; 3. Machine tool drilling tool; 4. Working plate; 5. Frame door; 6. Fixed block; 7. Positioning structure; 701. Clamping plate; 702. Fixed plate; 703. Auxiliary plate; 704. Vertical plate; 705. Moving rod; 706. Spring; 8. Lubrication structure; 801. Lubrication box; 802. Guide plate; 803. Oil outlet pipe; 804. Connecting pipe; 9. Support plate; 10. Moving plate; 11. Limit block; 12. Motor; 13. Protective plate; 14. Threaded rod; 15. Concave plate; 16. Slot. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] The utility model provides a technical solution: Figure 1 and Figure 4 As shown, in this embodiment, a workpiece positioning assembly for a CNC machine tool includes a body 1, a frame 2 is fixedly connected to the top of the body 1, a working plate 4 is provided above the body 1, a machine tool drilling tool 3 is provided in the frame 2, a fixed block 6 and a support plate 9 are fixedly connected to the top of the working plate 4, a movable plate 10 is slidably connected in the working plate 4, a threaded rod 14 is threadedly connected to the inner thread of the support plate 9, one end of the threaded rod 14 is rotatably connected to a limit block 11, a positioning structure 7 is provided above the limit block 11, the positioning structure 7 is connected to the top of the movable plate 10, a lubrication structure 8 is externally connected to the support plate 9, and a motor 12 is fixedly connected to one side of the movable plate 10;

[0022] A protective plate 13 is slidably connected inside the support plate 9, and concave plates 15 are connected on both sides of the protective plate 13. A card slot 16 is provided in the concave plate 15, and the concave plate 15 is snap-connected with the positioning structure 7. The positioning structure 7 includes a card plate 701 and a fixed plate 702. Two auxiliary plates 703 are connected to one side of the fixed plate 702. A vertical plate 704 is fixedly connected to the top of the auxiliary plate 703. A moving rod 705 is fixedly connected to one side of the vertical plate 704, and a spring 706 is connected to the outer shell of the moving rod 705.

[0023] like Figure 1 and Figure 3 As shown, a support leg is provided at the bottom of the machine body 1, a frame door 5 is slidably connected to the frame body 2, the movable plate 10 and the positioning structure 7 above the limit block 11 have the same structure and are positioned relative to each other, the output shaft of the motor 12 is connected to the threaded rod 14, the motor 12 drives the threaded rod 14 to rotate forward and reverse, one side of the protective plate 13 is clamped in the limit block 11, and the other side of the protective plate 13 is clamped in the movable plate 10.

[0024] By setting up the protective plate 13, when the protective plate 13 is fixedly connected to the opposite surfaces of the movable plate 10 and the limit block 11, direct contact between the coolant and the threaded rod 14 is avoided. The protective plate 13 helps to prevent the threaded rod 14 from oxidation and rusting due to liquid residue. The protective plate 13 improves the reliability of the entire positioning assembly and reduces the downtime caused by failure of the threaded rod 14.

[0025] like Figure 2 and Figure 4 As shown, the auxiliary plate 703 is slidably connected above the limit block 11, one side of the clamping plate 701 is connected to the fixed plate 702, the clamping plate 701 is clamped in the concave plate 15, the moving rod 705 is slidably connected above the limit block 11, and the vertical plate 704 is connected to the side of the limit block 11 through the spring 706.

[0026] By setting the spring 706, when the card plate 701 is pulled by the fixed plate 702, the spring 706 will deform accordingly, so that the spring 706 plays a certain supporting role in the movement of the card plate 701. When the card plate 701 loses resistance, it will be reset by the spring 706.

[0027] like Figure 2 As shown, the lubrication structure 8 includes a lubrication box 801 and a guide plate 802. The guide plate 802 is fixedly connected to the side of the support plate 9, and the lubrication box 801 is fixedly connected to the top of the support plate 9. A connecting pipe 804 is connected to one side of the lubrication box 801, and one end of the connecting pipe 804 is connected to the guide plate 802. An oil outlet pipe 803 is provided below the guide plate 802.

[0028] By setting up the lubrication structure 8, the water pump built into the lubrication box 801 delivers the lubricating oil to the guide plate 802 through the connecting pipe 804, and then the oil outlet pipe 803 will evenly sprinkle the lubricating oil in the guide plate 802 on the surface of the threaded rod 14, so that the surface of the threaded rod 14 can be lubricated regularly and quantitatively. The regular and quantitative lubrication can reduce the friction between the moving parts, reduce wear, and extend the service life of the parts.

[0029] The utility model provides a workpiece positioning assembly for CNC machine tools, and the specific working principle is as follows:

[0030] When the workpiece is clamped, the positioning structure 7 above the movable plate 10 and the limit block 11 can be adjusted, and the fixing plate 702 can apply tension to the card plate 701 through the fixing plate 702, and the two auxiliary plates 703 on the side of the fixing plate 702 will slide above the limit block 11. When the auxiliary plate 703 moves, the moving rod 705 will also slide accordingly, and the vertical plate 704 will drive the spring 706 to deform. When the position adjustment of the card plate 701 is completed, the protective plate 13 is clamped into the movable plate 10 and the limit block 11. When the protective plate 13 is fully fitted with the movable plate 10 and the limit block 11, the fixing plate 702 is released, and the card plate 701 is reset by the action of the spring 706, and the reset card plate 701 is clamped in the card slot 16;

[0031] Then the motor 12 drives the threaded rod 14 to rotate, and the threaded rod 14 will slide in the support plate 9 during rotation, and then the threaded rod 14 will drive the limit block 11 and the movable plate 10 to move in the working plate 4, and the limit block 11 will position the workpiece through the fixed block 6 after movement, and when the threaded rod 14 runs multiple times, the water pump built into the lubrication box 801 will transport the lubricating oil to the guide plate 802 through the connecting pipe 804, and then the oil outlet pipe 803 will evenly sprinkle the lubricating oil in the guide plate 802 on the surface of the threaded rod 14.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A workpiece positioning assembly for a CNC machine tool, comprising a body (1), characterized in that: The upper part of the machine body (1) is fixedly connected to a frame body (2), a working plate (4) is provided above the machine body (1), a machine tool drilling tool (3) is provided in the frame body (2), a fixed block (6) and a support plate (9) are fixedly connected above the working plate (4), a movable plate (10) is slidably connected inside the working plate (4), a threaded rod (14) is connected to the inner thread of the support plate (9), one end of the threaded rod (14) is rotatably connected to a limit block (11), a positioning structure (7) is provided above the limit block (11), the positioning structure (7) is connected to the upper part of the movable plate (10), a lubrication structure (8) is externally connected to the support plate (9), and a motor (12) is fixedly connected to one side of the movable plate (10); A protective plate (13) is slidably connected inside the support plate (9), and concave plates (15) are connected to both sides of the protective plate (13). A card slot (16) is provided inside the concave plate (15), and the concave plate (15) is card-engaged with a positioning structure (7). The positioning structure (7) comprises a card plate (701) and a fixed plate (702). Two auxiliary plates (703) are connected to one side of the fixed plate (702), and a vertical plate (704) is fixedly connected above the auxiliary plate (703). A moving rod (705) is fixedly connected to one side of the vertical plate (704), and a spring (706) is connected to the outer surface of the moving rod (705).

2. A workpiece positioning assembly for a CNC machine tool according to claim 1, characterized in that: Support legs are provided below the machine body (1), a frame door (5) is slidably connected inside the frame body (2), the movable plate (10) and the positioning structure (7) above the limit block (11) have the same structure and are positioned oppositely, and the output shaft of the motor (12) is connected to the threaded rod (14).

3. A workpiece positioning assembly for a CNC machine tool according to claim 2, characterized in that: The motor (12) drives the threaded rod (14) to rotate forward and reverse, one side of the protective plate (13) is clamped in the limit block (11), and the other side of the protective plate (13) is clamped in the movable plate (10).

4. The workpiece positioning assembly for a CNC machine tool according to claim 1, characterized in that: The auxiliary plate (703) is slidably connected above the limiting block (11), one side of the clamping plate (701) is connected to the fixed plate (702), and the clamping plate (701) is clamped in the concave plate (15).

5. The workpiece positioning assembly for a CNC machine tool according to claim 4, characterized in that: The moving rod (705) is slidably connected to the upper side of the limiting block (11), and the vertical plate (704) is connected to the side of the limiting block (11) via a spring (706).

6. The workpiece positioning assembly for a CNC machine tool according to claim 1, characterized in that: The lubrication structure (8) comprises a lubrication box (801) and a guide plate (802), wherein the guide plate (802) is fixedly connected to the side of the support plate (9), and the lubrication box (801) is fixedly connected above the support plate (9), and one side of the lubrication box (801) is connected to a connecting pipe (804).

7. A workpiece positioning assembly for a CNC machine tool according to claim 6, characterized in that: One end of the connecting pipe (804) is connected to the guide plate (802), and an oil outlet pipe (803) is provided below the guide plate (802).

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