Numerical control machine tool with automatic tool retracting function

Abstract

The numerical control machine tool with the automatic tool retracting function comprises a main shell, the outer surface of the main shell is fixedly connected with a frame, the inner surface of the frame is fixedly connected with a turning table, a blade is arranged outside the turning table, the outer surface of the blade is fixedly connected with a tool apron, and the outer surface of the tool apron is fixedly connected with the main shell. The inner surface of the main shell is fixedly connected with an outer shell, and the inner surface of the outer shell is fixedly connected with a top spring. According to the machine tool, through the arrangement of the clamping plate, when a blade fixed to the surface of the tool apron cuts a part, if programming is wrong during cutting and the tool apron moves excessively, the connecting plate connected with the tool apron is forced to move backwards, and the connecting plate is forced to drive the compression ring to compress hydraulic oil in the main shell backwards; and hydraulic oil in the main shell is pressed into the fixing column, the top plate in the fixing column is forced to slide forwards, and the purpose of the numerical control machine tool with the automatic tool retracting function is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerically controlled machine tools, in particular to a numerically controlled machine tool with an automatic tool retraction function. Background Art

[0002] CNC lathe is a high-precision and high-efficiency automated machine tool that can process complex workpieces such as straight cylinders, oblique cylinders, and arcs. In mechanical processing, due to the influence of various error factors, certain errors will be generated in the processed workpieces. In order to ensure the processing accuracy of the workpiece, when formulating the fixture tolerance and technical requirements, during the CNC machine tool processing, the tool can move from the starting point or tool change point to a position close to the workpiece and return to the starting point after processing, which can ensure the safety of the tool when retracting, that is, there will be no collision with the workpiece during the tool retraction process.

[0003] In the prior art, for example, the automatic tool retraction CNC machine tool of Chinese patent number CN201632865U comprises a machine base and a fixture mounted on the machine base, a longitudinally movable processing device is provided on both sides of the fixture, a ball screw is provided between the processing device and the machine base, the processing device is connected to the ball screw in a transmission manner, and the ball screw is driven to rotate by a motor.

[0004] However, in the prior art, although the above patent has the above technical advantages, the disadvantage is that the above patent can only rely on manually written programs to perform the automatic tool retraction function. When an error occurs in the program writing, the tool will directly hit the part, causing damage to the tool. The equipment cannot automatically retract the tool, and during machining, the tool cannot be quickly replaced when it is damaged. If the time is tight for large-scale processing of parts, if the tool replacement time is long, it will affect the subsequent work. Utility Model Content

[0005] In view of the deficiencies of the prior art, the technical solution adopted by the utility model to solve the technical problems is: a CNC machine tool with an automatic tool retracting function, comprising a main shell, the outer surface of the main shell is fixedly connected to a frame, the inner surface of the frame is fixedly connected to a turning table, a blade is arranged on the outside of the turning table, the outer surface of the blade is fixedly connected to a tool holder, the inner surface of the main shell is fixedly connected to an outer shell, the inner surface of the outer shell is fixedly connected to a top spring, and the top spring resets the top plate in the absence of external force.

[0006] Preferably, the top end of the top spring is fixedly connected to a top plate, the outer surface of the top plate is slidably connected to a fixing column, and the inner surface of the shell is fixedly connected to a tension spring, which allows the hydraulic oil to flow back into the main shell.

[0007] Preferably, the top end of the tension spring is fixedly connected to a compression ring, the inner surface of the compression ring is slidably connected to a fixed shell, the inner surface of the fixed shell is fixedly connected to the outer surface of the fixed column, and the inner surface of the fixed shell is fixedly connected to a clamping strip, which limits the movement direction of the compression column.

[0008] Preferably, the outer surface of the clamping strip is slidably connected with a pressure column, the outer surface of the pressure column is slidably connected with the inner surface of the fixed shell, the inner surface of the fixed shell is slidably connected with a clamping plate, and the clamping plate rotates and moves horizontally under pressure.

[0009] Preferably, the outer surface of the card plate contacts the outer surface of the pressure column, the inner surface of the card plate is fixedly connected to a cylinder, the outer surface of the cylinder is fixedly connected to a spring, the top of the spring is fixedly connected to a fixed cover, the outer surface of the fixed cover is fixedly connected to the outer surface of the fixed shell, the inner surface of the fixed cover is slidably connected to the outer surface of the cylinder, and the spring is fixedly connected to the cylinder, thereby allowing the cylinder to retract.

[0010] Preferably, the outer surface of the compression ring is fixedly connected with a connecting plate, the inner surface of the connecting plate contacts the outer surface of the knife seat, the outer surface of the cylinder is fixedly connected with a spring plate, the outer surface of the spring plate contacts the inner surface of the knife seat, the outer surface of the spring plate is slidably connected with a push block, the outer surface of the push block is fixedly connected with a slip ring, when the knife seat moves backward, the connecting plate is driven to move, and when the knife seat moves forward, the connecting plate will not be driven to move.

[0011] The beneficial effects of the utility model are as follows:

[0012] 1. The utility model sets a card plate. When the blade fixed on the surface of the knife seat cuts the part, if there is a programming error during cutting and the knife seat moves excessively, the connecting plate connected to the knife seat is forced to move backward, forcing the connecting plate to drive the compression ring to compress the hydraulic oil inside the main shell backward, and press the hydraulic oil inside the main shell into the fixed column, forcing the top plate in the fixed column to slide forward and push the pressure column to move forward. At this time, the pressure column pushes the card plate forward along the card strip. When the card plate slides to the top of the card strip, due to the oblique tooth shape of the card strip, the card plate drives the cylinder to rotate, and a groove is opened at the oblique tooth of the card plate. Therefore, the groove of the card plate slides along the card strip, and the cylinder is connected to the surface of the knife seat. Under the elastic action of the spring, the blade is instantly retracted backward, thereby avoiding collision with the knife, realizing that when the operation is wrong, the knife seat is automatically retracted, thereby reducing the purpose of loss, and solving the problem that the traditional equipment cannot retract the knife seat.

[0013] 2. The utility model provides a spring plate. When the blade is damaged, the slip ring is slid forward, so that the push block fixed on the surface of the slip ring presses the spring plate to move downward and separates the spring plate from the inner surface of the knife seat. The knife seat can be pulled out and a new knife seat can be installed on the surface of the fixed cover. The slip ring is slid backward. The spring plate is reset and re-engaged in the inner surface of the knife seat to fix the knife seat, thereby achieving the purpose of rapid replacement of the knife seat and solving the problem that traditional equipment cannot be replaced rapidly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the front view of the utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

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

[0017] Figure 4 It is a schematic diagram of the structure of the utility model at B;

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

[0019] In the figure: 1. main housing; 2. frame; 3. turning table; 4. blade; 5. tool holder; 6. outer shell; 7. top spring; 8. top plate; 9. tension spring; 10. fixed column; 11. compression ring; 12. fixed shell; 13. pressure column; 14. clamping plate; 15. cylinder; 16. clamping strip; 17. spring; 18. fixed cover; 19. connecting plate; 20. spring plate; 21. slip ring; 22. push block. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes. Example

[0021] See also Figure 1 - Figure 5The utility model provides a technical solution: a CNC machine tool with an automatic tool retracting function, comprising a main shell 1, a frame 2 is fixedly connected to the outer surface of the main shell 1, a turning table 3 is fixedly connected to the inner surface of the frame 2, a blade 4 is arranged outside the turning table 3, a tool holder 5 is fixedly connected to the outer surface of the blade 4, an outer shell 6 is fixedly connected to the inner surface of the outer shell 6, a top spring 7 is fixedly connected to the top of the top spring 7, a top plate 8 is fixedly connected to the outer surface of the top plate 8, a fixed column 10 is slidably connected to the outer surface of the top plate 8, a tension spring 9 is fixedly connected to the inner surface of the outer shell 6, and hydraulic oil is provided in the main shell 1 to facilitate pushing the top plate 8.

[0022] The top end of the tension spring 9 is fixedly connected with a compression ring 11, the inner surface of the compression ring 11 is slidably connected with a fixed shell 12, the inner surface of the fixed shell 12 is fixedly connected with the outer surface of the fixed column 10, the inner surface of the fixed shell 12 is fixedly connected with a clamping strip 16, the outer surface of the clamping strip 16 is slidably connected with a pressure column 13, the outer surface of the pressure column 13 is slidably connected with the inner surface of the fixed shell 12, the inner surface of the fixed shell 12 is slidably connected with a clamping plate 14, and a groove is opened on the surface of the clamping plate 14.

[0023] The outer surface of the clamping plate 14 contacts the outer surface of the pressure column 13, the inner surface of the clamping plate 14 is fixedly connected with the cylinder 15, the outer surface of the cylinder 15 is fixedly connected with the spring 17, the top of the spring 17 is fixedly connected with the fixed cover 18, the outer surface of the fixed cover 18 is fixedly connected with the outer surface of the fixed shell 12, the inner surface of the fixed cover 18 is slidably connected with the outer surface of the cylinder 15, the outer surface of the compression ring 11 is fixedly connected with the connecting plate 19, the inner surface of the connecting plate 19 contacts the outer surface of the tool holder 5, the outer surface of the cylinder 15 is fixedly connected with the spring plate 20, the outer surface of the spring plate 20 contacts the inner surface of the tool holder 5, the outer surface of the spring plate 20 is slidably connected with the push block 22, the outer surface of the push block 22 is fixedly connected with the slip ring 21, and the spring plate 20 is made of elastic metal material.

[0024] Working principle:

[0025] When in use, the part is placed on the surface of the turning table 3 fixed on the inner surface of the frame 2. When the blade 4 fixed on the surface of the tool holder 5 cuts the part, if there is a programming error during cutting and the tool holder 5 moves excessively, the connecting plate 19 connected to the tool holder 5 is forced to move backward, forcing the connecting plate 19 to drive the compression ring 11 to compress the hydraulic oil inside the main shell 1 backward, and press the hydraulic oil inside the main shell 1 into the fixed column 10, forcing the top plate 8 in the fixed column 10 to slide forward and push the pressure column 13 to move forward. At this time, the pressure column 13 pushes the card plate 14 forward along the card strip 16. When the card plate 14 slides to the top of the card strip 16, because of the oblique tooth shape of the card strip 16, the card plate 14 drives the cylinder 15 to rotate, and a groove is opened at the oblique tooth of the card plate 14, so the groove of the card plate 14 slides along the card strip 16, and the cylinder 15 is connected to the surface of the tool holder 5, and under the elastic action of the spring 17, the blade 4 is instantly retracted backward, thereby avoiding collision with the knife.

[0026] When the tool holder 5 is away from the part, the top plate 8 is reset under the elastic action of the top spring 7 fixed on the surface of the outer shell 6, and the compression ring 11 is reset under the elastic action of the tension spring 9. When normal use is needed, the connecting plate 19 is pushed again to make the pressure column 13 slide along the fixed shell 12 and push the clamping plate 14 again. At this time, the oblique teeth of the clamping plate 14 are clamped into the surface of the clamping strip 16, so that the tool holder 5 is reset. At this time, parts with strong rigidity can be processed without triggering the retraction of the tool holder 5.

[0027] When the blade 4 is damaged, the slip ring 21 is slid forward so that the push block 22 fixed on the surface of the slip ring 21 presses the spring plate 20 to move downward and separate the spring plate 20 from the inner surface of the knife seat 5. The knife seat 5 can be pulled out and a new knife seat 5 can be installed on the surface of the fixed cover 18. The slip ring 21 is slid backward so that the spring plate 20 is reset and re-engaged in the inner surface of the knife seat 5 to fix the knife seat 5.

[0028] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A CNC machine tool with an automatic tool retraction function, comprising a main housing (1), characterized in that: The outer surface of the main housing (1) is fixedly connected to a frame (2), the inner surface of the frame (2) is fixedly connected to a turning table (3), a blade (4) is arranged outside the turning table (3), the outer surface of the blade (4) is fixedly connected to a blade seat (5), the inner surface of the main housing (1) is fixedly connected to an outer shell (6), and the inner surface of the outer shell (6) is fixedly connected to a top spring (7).

2. A CNC machine tool with automatic tool retraction function according to claim 1, characterized in that: The top end of the top spring (7) is fixedly connected to a top plate (8), the outer surface of the top plate (8) is slidably connected to a fixing column (10), and the inner surface of the outer shell (6) is fixedly connected to a tension spring (9).

3. A CNC machine tool with automatic tool retraction function according to claim 2, characterized in that: The top end of the tension spring (9) is fixedly connected to a compression ring (11), the inner surface of the compression ring (11) is slidably connected to a fixed shell (12), the inner surface of the fixed shell (12) is fixedly connected to the outer surface of the fixed column (10), and the inner surface of the fixed shell (12) is fixedly connected to a clamping strip (16).

4. A CNC machine tool with automatic tool retraction function according to claim 3, characterized in that: The outer surface of the clamping strip (16) is slidably connected to a pressure column (13), the outer surface of the pressure column (13) is slidably connected to the inner surface of the fixed shell (12), and the inner surface of the fixed shell (12) is slidably connected to a clamping plate (14).

5. A CNC machine tool with automatic tool retraction function according to claim 4, characterized in that: The outer surface of the clamping plate (14) contacts the outer surface of the pressure column (13); the inner surface of the clamping plate (14) is fixedly connected to a cylinder (15); the outer surface of the cylinder (15) is fixedly connected to a spring (17); the top of the spring (17) is fixedly connected to a fixed cover (18); the outer surface of the fixed cover (18) is fixedly connected to the outer surface of the fixed shell (12); and the inner surface of the fixed cover (18) is slidably connected to the outer surface of the cylinder (15).

6. A CNC machine tool with automatic tool retraction function according to claim 5, characterized in that: The outer surface of the compression ring (11) is fixedly connected to a connecting plate (19), the inner surface of the connecting plate (19) contacts the outer surface of the knife seat (5), the outer surface of the cylinder (15) is fixedly connected to a spring plate (20), the outer surface of the spring plate (20) contacts the inner surface of the knife seat (5), the outer surface of the spring plate (20) is slidably connected to a push block (22), and the outer surface of the push block (22) is fixedly connected to a slip ring (21).

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