Automatic retracting tool rest of numerical control machine tool

Abstract

The utility model discloses an automatic tool retracting tool rest of a numerical control machine tool, which relates to the technical field of machine tools and comprises a mounting disc, a tool lifting mechanism is fixedly mounted on the front side of the mounting disc, a tool retracting mechanism is fixedly mounted on the front side of the tool lifting mechanism, and a tool changing mechanism is fixedly mounted at the front end of the tool retracting mechanism. The tool retracting mechanism comprises a fixing seat, and the fixing seat is fixedly installed on the front face of the tool retracting mechanism. By the adoption of the structure, the first motor is used for driving the fixing disc to rotate, the tool changing assembly moves along with the fixing disc, when the machining tool bit moves to the uppermost end, the second air cylinder is started to push the third air cylinder to move downwards, then the third air cylinder pushes the tool bit on the sleeve base to move forwards for machining, and when tool changing is needed, the first motor is started to enable the fixing disc to rotate; the second air cylinder and the third air cylinder retract to retract the tool bit, the position of the tool bit is changed, the air cylinders are started again, tool changing can be completed, tool changing can be flexibly conducted according to actual needs, and use convenience is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of machine tools, and particularly relates to an automatic tool retracting turret for a numerical control machine tool. Background Art

[0002] As an automated machine tool equipped with a program control system, a numerical control machine tool can accurately drive the machine tool to operate according to the pre-programmed procedures, and then process parts. Numerical control machine tools have many remarkable characteristics, such as high precision, high automation, and high efficiency. With these advantages, it can excellently complete the processing tasks of parts with complex shapes. The tool retracting turret of a numerical control machine tool is a crucial component, mainly responsible for automatically and safely retracting the tool from the workpiece after processing. The tool retracting turret usually consists of multiple parts such as a driving device, a transmission mechanism, and a turret body, and is precisely controlled by instructions issued by the numerical control system to achieve accurate tool retracting actions. In this way, it can not only ensure the safe withdrawal of the tool from the processing area and make full preparations for the next processing operation, but also effectively avoid collisions between the tool and the workpiece or fixture, playing a key and irreplaceable role in improving the processing efficiency, precision, and automation degree of the numerical control machine tool;

[0003] Chinese Patent with publication number "CN103056437B" discloses a tool automatic retracting device for a metal cutting machine tool. The device is provided with a ram, a rotating shaft, a tool rod, and a turret body. Among them, a positioning seat is arranged on one side of the ram. The upper end of the tool rod is firmly and fixedly connected to the positioning seat, and the lower end is hinged to the turret body via the rotating shaft. The turret body consists of a tool undulating seat, a tool tip, and a tension spring. A positioning boss is arranged in the middle of the upper end of the tool undulating seat, which is in close contact with the tool rod on one side and in contact with the lower end of the tool rod via the tension spring in the tension spring positioning hole arranged on the other side. Due to the adoption of the above structure, the present invention has the advantages of reasonable structure and convenient operation. At the same time, the stroke of the tool rod is large, which can effectively expand the processing range, improve the processing efficiency, and reduce the labor intensity;

[0004] However, during the actual application of the above tool retracting structure, there are some deficiencies. The overall structure is relatively simple, and it is impossible to perform quick and flexible tool changing operations according to processing requirements during use. Moreover, during the processing process, it is impossible to achieve quick tool lifting and tool retracting, and it is also difficult to make flexible adjustments. The overall use is rather inconvenient. Therefore, there is an urgent need to improve and optimize it to better meet the actual processing requirements. Summary of the Utility Model

[0005] Aiming at the problems mentioned in the background art, the purpose of the present utility model is to provide an automatic tool retracting turret for a numerical control machine tool to solve the problems raised in the background art.

[0006] The above technical purpose of the present utility model is achieved through the following technical solutions:

[0007] An automatic tool retraction turret for a numerical control machine tool, comprising a mounting plate, a tool lifting mechanism is fixedly installed on the front surface of the mounting plate, a tool retraction mechanism is fixedly installed on the front surface of the tool lifting mechanism, and a tool changing mechanism is fixedly installed at the front end of the tool retraction mechanism;

[0008] The tool retraction mechanism includes a fixed seat, the fixed seat is fixedly installed on the front surface of the tool retraction mechanism, an installation frame is fixedly installed on the outer side of the fixed seat, a fixed plate is fixedly installed at the front end of the installation frame, a first cylinder is fixedly installed in the middle of the fixed plate, a substrate is fixedly installed at the front end of the first cylinder, and the front surface of the substrate is fixedly connected to the back surface of the tool changing mechanism.

[0009] As a preferred technical solution, support shafts are fixedly installed at the four corners of the back surface of the substrate, and the ends of the support shafts penetrate through the fixed plate.

[0010] As a preferred technical solution, the tool changing mechanism includes a first motor, the first motor is fixedly installed on the front surface of the substrate, a fixed disk is fixedly installed at the output end of the first motor, and tool changing components are fixedly connected in an equidistant annular arrangement on the front surface of the fixed disk.

[0011] As a preferred technical solution, support frames are fixedly installed at equal intervals on the outer side of the fixed disk, a support fixed ring rail is fixedly connected to the front surface of the substrate, and the rear ends of the support frames are slidably connected inside the support fixed ring rail.

[0012] As a preferred technical solution, the tool changing component includes a fixed strip, the fixed strips are fixedly connected in an equidistant annular arrangement on the front surface of the fixed disk, a second cylinder is fixedly installed at the outer end of the front surface of the fixed strip, a third cylinder is fixedly installed at the output end of the second cylinder, a sleeve seat is fixedly installed at the output end of the third cylinder, and a tool head is installed inside the sleeve seat through bolts.

[0013] As a preferred technical solution, movable grooves are opened on both sides of the fixed strip, a support fixed frame is slidably connected inside the movable grooves, and the front end of the support fixed frame is fixedly connected to the third cylinder.

[0014] As a preferred technical solution, the tool lifting mechanism includes a vertical rail, the vertical rail is fixedly installed on the front surface of the mounting plate, a second motor is fixedly connected to the top of the vertical rail, a lead screw is fixedly installed through the vertical rail at the output end of the second motor, the lead screw is rotatably connected inside the vertical rail, a slider is threadedly connected to the outer surface of the lead screw, and the fixed seat is fixedly installed on the front surface of the slider.

[0015] In summary, the present utility model mainly has the following beneficial effects:

[0016] First, the device is provided with a tool-lifting mechanism and a tool-retracting mechanism that cooperate with each other. When the second motor is started to drive the lead screw to rotate in the vertical rail, the slider slides up and down, and then the tool-retracting mechanism and the tool-changing mechanism move up and down, enabling flexible adjustment of the tool head height. During the adjustment process, the first cylinder is started to push the substrate back and forth, realizing flexible adjustment of the position of the tool-changing mechanism and the tool head. During processing, the support shaft and the fixed plate slide back and forth to assist in supporting the substrate, improving the use stability, bringing great convenience to users, and making the operation more convenient;

[0017] Second, the device uses the first motor to drive the fixed disk to rotate, and the tool-changing assembly moves accordingly. When the processing tool head moves to the uppermost end, the second cylinder is started to push the third cylinder downward, and then the third cylinder pushes the tool head on the sleeve seat forward for processing. When a tool change is required, the first motor is started to rotate the fixed disk, and the second cylinder and the third cylinder retract to retract the tool head, changing the position of the tool head. Starting the cylinder again can complete the tool change. The device can flexibly change tools for processing according to actual needs, greatly improving the use convenience. Brief Description of the Drawings

[0018] Figure 1 is the overall structural schematic diagram of the present utility model;

[0019] Figure 2 is the front view structural schematic diagram of the tool-retracting mechanism and the tool-changing mechanism of the present utility model;

[0020] Figure 3 is the rear view structural schematic diagram of the tool-retracting mechanism and the tool-changing mechanism of the present utility model;

[0021] Figure 4 is the structural schematic diagram of the tool-lifting mechanism of the present utility model.

[0022] Reference numerals: 1, mounting disk; 2, tool-lifting mechanism; 21, vertical rail; 22, second motor; 23, lead screw; 24, slider; 3, tool-retracting mechanism; 31, fixed seat; 32, mounting frame; 33, fixed plate; 34, first cylinder; 35, substrate; 36, support shaft; 4, tool-changing mechanism; 41, first motor; 42, fixed disk; 43, tool-changing assembly; 431, fixed strip; 432, second cylinder; 433, third cylinder; 434, sleeve seat; 435, tool head; 436, movable groove; 437, support and fixation frame; 44, support frame; 45, support and fixation ring rail. Detailed Description of the Embodiment Embodiment

[0023] Refer to Figures 1 to 4 , an automatic tool-retracting tool rest for a numerical control machine tool in this embodiment includes a mounting disk 1. A tool-lifting mechanism 2 is fixedly installed on the front surface of the mounting disk 1, a tool-retracting mechanism 3 is fixedly installed on the front surface of the tool-lifting mechanism 2, and a tool-changing mechanism 4 is fixedly installed at the front end of the tool-retracting mechanism 3;

[0024] The tool retraction mechanism 3 includes a fixed seat 31 which is fixedly installed on the front of the tool retraction mechanism 3. An installation frame 32 is fixedly installed on the outside of the fixed seat 31. A fixing plate 33 is fixedly installed at the front end of the installation frame 32. A first cylinder 34 is fixedly installed in the middle of the fixing plate 33. A substrate 35 is fixedly installed at the front end of the first cylinder 34. The front of the substrate 35 is fixedly connected to the back of the tool changing mechanism 4. The installation disk 1 provides a stable installation foundation for the whole device. The tool lifting mechanism 2 cooperates with the tool retraction mechanism 3 to enable flexible adjustment of the tool head 435. The fixed seat 31, installation frame 32 and fixing plate 33 in the tool retraction mechanism 3 form a stable structure. The first cylinder 34 pushes the substrate 35 to drive the tool changing mechanism 4 to move back and forth, making the adjustment of the position of the tool head 435 more convenient and enabling automatic and rapid tool retraction. The setting of the tool changing mechanism 4 further improves the flexibility and efficiency of processing, allows for rapid tool change according to different processing requirements. The overall device has a reasonable structural design, improves the automation degree and processing accuracy of the CNC machine tool, and brings great convenience to production.

[0025] Reference Figures 1 - 3 , The tool changing mechanism 4 includes a first motor 41 which is fixedly installed on the front of the substrate 35. A fixed disk 42 is fixedly installed at the output end of the first motor 41. Tool changing components 43 are fixedly connected in an equally spaced and annular arrangement on the front of the fixed disk 42. Support frames 44 are fixedly installed at equal intervals on the outside of the fixed disk 42. A support fixing ring rail 45 is fixedly connected to the front of the substrate 35. The rear ends of the support frames 44 are slidably connected inside the support fixing ring rail 45. The tool changing component 43 includes a fixing strip 431 which is fixedly connected in an equally spaced and annular arrangement on the front of the fixed disk 42. A second cylinder 432 is fixedly installed at the outer end of the front of the fixing strip 431. A third cylinder 433 is fixedly installed at the output end of the second cylinder 432. A socket 434 is fixedly installed at the output end of the third cylinder 433. A tool head 435 is installed inside the socket 434 by bolts. The first motor 41 in the tool changing mechanism 4 can drive the fixed disk 42 to rotate, enabling the equally spaced and annularly arranged tool changing components 43 to be flexibly switched according to requirements. The cooperation between the support frames 44 and the support fixing ring rail 45 ensures the stability of the rotation of the fixed disk 42. The fixing strip 431 of the tool changing component 43 provides support for the structure. The cooperation between the second cylinder 432 and the third cylinder 433 can precisely control the position of the socket 434 and the tool head 435, facilitating the tool changing operation. Installing the tool head 435 by bolts is convenient for replacing and maintaining different types of tool heads 435, improving the diversity and efficiency of processing, meeting various complex processing requirements, and enhancing the overall performance of the CNC machine tool.

[0026] Reference Figures 1 - 3, support shafts 36 are fixedly installed at the four corners on the back of the substrate 35. The ends of the support shafts 36 penetrate through the fixed plate 33. Activity slots 436 are provided on both sides of the fixed strip 431. A support and fixation frame 437 is slidably connected to the inner side of the activity slot 436. The front end of the support and fixation frame 437 is fixedly connected to the third cylinder 433. The support shafts 36 at the four corners on the back of the substrate 35 penetrate through the fixed plate 33, providing stable guidance for the forward and backward movement of the substrate 35, ensuring the smoothness and accuracy of the movement of the substrate 35 during the tool change and tool retraction processes. The activity slots 436 provided on both sides of the fixed strip 431 and the support and fixation frame 437 slidably connected thereto provide additional support and guidance for the third cylinder 433. The support and fixation frame 437 is fixedly connected to the third cylinder 433, making the third cylinder 433 more stable and reliable when pushing the sleeve seat 434 and the tool head 435 for tool change operations, reducing shaking and errors, improving the accuracy and efficiency of tool change, and thus enhancing the overall machining quality and performance of the CNC machine tool.

[0027] Reference Figure 1 and Figure 4 , the tool lifting mechanism 2 includes a vertical rail 21. The vertical rail 21 is fixedly installed on the front of the mounting plate 1. A second motor 22 is fixedly connected to the top of the vertical rail 21. The output end of the second motor 22 penetrates through the vertical rail 21 and a lead screw 23 is fixedly installed. The lead screw 23 is rotatably connected inside the vertical rail 21. A slider 24 is threadedly connected to the outer surface of the lead screw 23. A fixed seat 31 is fixedly installed on the front of the slider 24. The vertical rail 21 is fixed on the front of the mounting plate 1, providing a stable support structure for the entire tool lifting mechanism 2. The second motor 22 at the top can accurately drive the lead screw 23 to rotate inside the vertical rail 21. Through the threaded connection between the lead screw 23 and the slider 24, the up and down sliding of the slider 24 inside the vertical rail 21 is realized. This design enables the fixed seat 31 and the tool retraction mechanism 3 and the tool change mechanism 4 connected thereto to flexibly move up and down, so that the height of the tool head 435 can be accurately adjusted according to the machining requirements. The operation of the entire tool lifting mechanism 2 is stable and reliable, improving the machining accuracy and flexibility of the CNC machine tool, and providing a strong guarantee for efficient and accurate machining operations.

[0028] Principle of use and advantages: By cleverly setting the cooperation between the tool-lifting mechanism 2 and the tool-retracting mechanism 3, the device has many advantages during actual use. Specifically, the second motor 22 can be started to run. At this time, the second motor 22 can drive the lead screw 23 to rotate inside the vertical rail 21. As the lead screw 23 rotates, the slider 24 can slide up and down inside the vertical rail 21. The up and down sliding of the slider 24 can further drive the entire tool-retracting mechanism 3 and the tool-changing mechanism 4 to move up and down. In this way, the overall device can flexibly adjust the displacement, so that the height of the tool head 435 can be flexibly adjusted during use. And during the adjustment process, the first cylinder 34 can also be started to run. When the first cylinder 34 runs, it can push the substrate 35 to move back and forth. At this time, the front and back displacement of the tool-changing mechanism 4 and its tool head 435 can be flexibly adjusted, so that the device can automatically and quickly perform the tool-retracting operation. In addition, during processing, the support shaft and the fixed plate 33 can slide reciprocally. This design can assist in supporting and strengthening the entire substrate 35. This not only improves the overall use stability of the device, but also brings great convenience to the user, making it more convenient to operate;

[0029] By carefully setting the tool-changing mechanism 4, the device shows excellent performance during use. Specifically, the first motor 41 can be started to drive the fixed disk 42 to rotate. As the fixed disk 42 rotates, each tool-changing component 43 will also move accordingly. When the tool head 435 used for processing moves to the uppermost end, the second cylinder 432 can be started to push the third cylinder 433 to move down to the middle position of the fixed disk 42. At this time, the third cylinder 433 is used to push the tool head 435 on the sleeve seat 434 to move forward. After the tool head 435 on the sleeve seat 434 moves forward, the processing operation can be carried out. And when it is necessary to change the tool again, by starting the first motor 41 to drive the fixed disk 42 to rotate again. At this time, the second cylinder 432 and the third cylinder 433 are started to retract, and the tool head 435 can be retracted. In this way, the position of the tool head 435 can be changed, prompting another tool head 435 to move to the uppermost end. At this time, starting the second cylinder 432 and the third cylinder 433 to run again can complete the tool-changing operation. It can be seen that the overall device can perform flexible tool-changing processing according to actual needs, greatly improving the overall use convenience of the device.

Claims

1. A tool holder for automatic tool retraction of a numerically controlled machine tool, comprising a mounting plate (1), characterized in that: A knife lifting mechanism (2) is fixedly mounted on the front of the mounting plate (1), a knife retracting mechanism (3) is fixedly mounted on the front of the knife lifting mechanism (2), and a knife changing mechanism (4) is fixedly mounted on the front end of the knife retracting mechanism (3); The knife retracting mechanism (3) comprises a fixing seat (31), the fixing seat (31) being fixedly mounted on the front side of the knife retracting mechanism (3), a mounting frame (32) being fixedly mounted on the outer side of the fixing seat (31), a fixing plate (33) being fixedly mounted on the front end of the fixing frame (32), a first cylinder (34) being fixedly mounted on the middle part of the fixing plate (33), a base plate (35) being fixedly mounted on the front end of the first cylinder (34), and a front side of the base plate (35) being fixedly connected to a back side of the knife changing mechanism (4).

2. The automatic tool retraction tool rest for CNC machine tools according to claim 1, characterized in that: Support shafts (36) are fixedly mounted at the four corners of the back side of the base plate (35), and the ends of the support shafts (36) penetrate the fixed plate (33).

3. The automatic tool retraction tool rest for CNC machine tools according to claim 1, characterized in that: The tool changing mechanism (4) comprises a first motor (41), the first motor (41) being fixedly mounted on the front side of a base plate (35), a fixed disk (42) being fixedly mounted on the output end of the first motor (41), and a tool changing assembly (43) being fixedly connected to the front side of the fixed disk (42) in an annular arrangement at equal intervals.

4. The automatic tool retraction tool rest for CNC machine tools according to claim 3, characterized in that: Support frames (44) are fixedly mounted at equal intervals on the outside of the fixed plate (42), a supporting ring rail (45) is fixedly connected to the front of the base plate (35), and a rear end of the support frame (44) is slidably connected to the inside of the supporting ring rail (45).

5. The automatic tool retraction tool rest for CNC machine tools according to claim 4, characterized in that: The tool changing assembly (43) comprises a fixing bar (431), the fixing bars (431) being arranged in a ring at equal intervals and fixedly connected to the front side of the fixing plate (42), a second cylinder (432) being fixedly mounted on the front outer end of the fixing bar (431), a third cylinder (433) being fixedly mounted on the output end of the second cylinder (432), a sleeve (434) being fixedly mounted on the output end of the third cylinder (433), and a cutter head (435) being mounted on the inner side of the sleeve (434) via bolts.

6. The automatic tool retracting tool rest for a CNC machine tool according to claim 5, characterized in that: Both sides of the fixing strip (431) are provided with movable grooves (436), the inner side of the movable groove (436) is slidably connected to a support frame (437), and the front end of the support frame (437) is fixedly connected to the third cylinder (433).

7. The automatic tool retraction tool rest for CNC machine tools according to claim 1, characterized in that: The knife lifting mechanism (2) comprises a vertical rail (21), the vertical rail (21) is fixedly mounted on the front side of the mounting plate (1), a second motor (22) is fixedly connected to the top of the vertical rail (21), an output end of the second motor (22) passes through the vertical rail (21) and a lead screw (23) is fixedly mounted thereon, the lead screw (23) is rotatably connected to the inside of the vertical rail (21), an outer surface of the lead screw (23) is threadedly connected to a slider (24), and the fixing seat (31) is fixedly mounted on the front side of the slider (24).

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