Numerical control horizontal lathe with protective work mechanism

Abstract

The numerical control horizontal lathe comprises a machine body, a clamping mechanism used for clamping a workpiece is arranged above the machine body, a cutting mechanism is arranged above the clamping mechanism, the cutting mechanism comprises a support, a tool apron is arranged at the bottom of the support, the two sides of the top of the tool apron are rotationally connected with an installation base respectively, the installation base is fixed to the support, and the protection mechanism is arranged on the machine body. A pressure sensor is installed on the portion, below the installation base, of the support, a turning tool is detachably installed at the bottom of the tool apron, strip-shaped grooves are formed in the two sides of the tool apron respectively, and each strip-shaped groove is connected with the support through a fastener. During use, after the turning tool is in contact with a workpiece, the turning tool drives the tool apron to rotate towards the pressure sensor, so that the pressure generated by the tool apron pressure sensor is monitored all the time, and if the monitored pressure value exceeds a preset value which can be borne by the turning tool, the two-shaft truss robot drives the turning tool to quickly lift up; and the turning tool is quickly separated from the workpiece, so that the turning tool is prevented from cracking.

Description

Technical Field

[0001] This utility model relates to the field of horizontal lathe technology, specifically a CNC horizontal lathe equipped with a protective mechanism. Background Technology

[0002] A horizontal lathe is a type of mechanical equipment used for machining workpieces. Its spindle is positioned horizontally, hence the name. Horizontal lathes are mainly used for machining the internal and external rotating surfaces, end faces, and various internal and external threads of various types of workpieces such as shafts, discs, and rings. With appropriate cutting tools and accessories, they can also perform drilling, reaming, tapping, and knurling operations.

[0003] In the turning process, the machining of the workpiece is inseparable from the cutting tool. Existing cutting tools are continuously subjected to compressive forces from the workpiece during machining. If the depth of cut is too large, the resistance of the cutting tool increases accordingly. Because cutting tools of the same model have their tolerance limits, when the pressure limit is exceeded, the cutting tool is very likely to break, and a broken tool may cause injury. Therefore, we propose a CNC horizontal lathe equipped with a protective mechanism to prevent the cutting tool from overloading, thus solving the aforementioned technical problems. Utility Model Content

[0004] This utility model provides a CNC horizontal lathe equipped with a protective mechanism, which has the advantage of continuously monitoring the pressure generated by the pressure sensor on the tool holder, and quickly separating the tool from the workpiece if the monitored pressure value exceeds the preset value that the tool can withstand, thus solving the problems mentioned in the background art.

[0005] The technical solution of this utility model is implemented as follows: A CNC horizontal lathe with a protective mechanism includes a machine body, a clamping mechanism for clamping workpieces is provided above the machine body, and a cutting mechanism is provided above the clamping mechanism. The cutting mechanism includes a support, a tool holder is provided at the bottom of the support, and the top two sides of the tool holder are rotatably connected to a mounting seat. The mounting seat is fixed on the support, and a pressure sensor is installed on the support below the mounting seat. A cutting tool is detachably installed at the bottom of the tool holder, and strip grooves are provided on both sides of the tool holder. Each strip groove is connected to the support by a fastener, and the tool holder is placed on the pressure sensor so that the impact force on the cutting tool is sensed by the pressure sensor in real time. The support is installed on the free end of a two-axis gantry robot, and the tool holder is advanced toward the clamping mechanism under the drive of the two-axis gantry robot.

[0006] Preferably, the clamping mechanism includes a chuck and a tailstock, which are coaxial. The chuck is rotatably mounted on a support plate. A drive device connected to the chuck is installed on the side of the support plate away from the tailstock. The tailstock is mounted on a movable seat. Both ends of the movable seat are mounted on a first support guide rail via sliders. The first support guide rail is located on the top of the machine body. One end of the movable seat is connected to a first linear drive module via a frame. The first linear drive module is located on the side of the machine body. The chuck holds a workpiece, and the first linear drive module drives the tailstock to move towards the workpiece, so that the tip of the tailstock abuts against the end of the workpiece.

[0007] Preferably, the two-axis gantry robot includes a mounting beam, one end of which is connected to a support plate, and the other end of the support plate is connected to a strip seat via a bracket. The strip seat is located on the top of the robot body. A second linear drive module is provided on the top of the mounting beam. A second support guide rail is installed on the side of the mounting beam near the clamping mechanism. The second support guide rail is connected to the vertical frame via a slider, and the vertical frame is connected to the second linear drive module via the frame. A third support guide rail and a third linear drive module are installed vertically downward on the side of the vertical frame near the clamping mechanism. The third support guide rail is connected to the top of the support via a slider, and the slider is connected to the third linear drive module via the frame.

[0008] Preferably, the system also includes a controller, which is connected to the first linear drive module, the second linear drive module, the third linear drive module, and the pressure sensor, respectively.

[0009] Preferably, a control box is provided on the side of the support plate away from the clamping mechanism, and the surface of the control box is provided with an operation screen and operation buttons respectively connected to the controller.

[0010] Preferably, a material equalization trough is provided on the machine body between the two first support guide rails. The end of the material equalization trough away from the support plate is connected to the outside. A guide plate is installed in the material equalization trough and is inclined towards the opening of the material equalization trough.

[0011] Preferably, the fastener is a screw that is movably placed in the slot, the screw is vertically mounted on the support, and a nut is provided at the end of the screw.

[0012] Compared with the prior art, when the cutting tool comes into contact with the workpiece, the cutting tool will drive the tool holder to rotate towards the pressure sensor, so that the pressure generated by the tool holder on the pressure sensor is always monitored. If the monitored pressure value exceeds the preset value that the cutting tool can withstand, the two-axis gantry robot will drive the cutting tool to lift up quickly, so that the cutting tool will quickly separate from the workpiece, thereby avoiding the cutting tool from breaking and effectively protecting the safety during the turning process. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the specific mounting structure of the lathe tool in this utility model.

[0016] In the diagram: 1. Machine body; 2. First linear drive module; 3. First support guide rail; 4. Moving seat; 5. Tailstock; 6. Screw; 7. Second support guide rail; 8. Mounting beam; 9. Bracket; 10. Material trough; 11. Strip seat; 12. Guide plate; 13. Second linear drive module; 14. Third support guide rail; 15. Vertical frame; 16. Third linear drive module; 17. Support plate; 18. Chuck; 19. Control box; 20. Operation panel; 21. Lathe tool; 22. Support; 23. Tool holder; 24. Strip groove; 25. Mounting seat; 26. Pressure sensor. Detailed Implementation

[0017] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] Reference Figures 1 to 2 This utility model provides a technical solution: a CNC horizontal lathe with a protective mechanism, including a machine body 1, and a clamping mechanism for clamping workpieces is provided on the upper part of the machine body 1. The clamping mechanism includes a chuck 18 and a tailstock 5. The chuck 18 and the tailstock 5 are coaxial, and the chuck 18 is rotatably mounted on a support plate 17. A drive device (not shown in the figure) connected to the chuck 18 is installed on the side of the support plate 17 away from the tailstock 5. The drive device is a combination of a drive motor and a gearbox. That is, the drive motor is connected to the chuck 18 through the gearbox, so that the drive motor can drive the chuck 18 to rotate. The chuck 18 is a three-jaw chuck or a four-jaw chuck.

[0019] The tailstock 5 is mounted on the movable base 4. Both ends of the movable base 4 are mounted on the first support rail 3 via sliders. The first support rail 3 is located on the top of the body 1. One end of the movable base 4 is connected via a connecting bracket (such as...). Figure 1(Indicated by the middle arrow C) is connected to the first linear drive module 2, which is located on the side of the body 1;

[0020] When in use, the chuck 18 holds the workpiece, and the first linear drive module 2 drives the tailstock 5 to move towards the workpiece, so that the tip of the tailstock 5 abuts against the end of the workpiece. At this time, both ends of the workpiece can be fixed. Then, the rotation of the chuck will drive the workpiece to rotate.

[0021] like Figure 1 As shown, a cutting mechanism is provided above the clamping mechanism. The cutting mechanism includes a support 22, a tool holder 23 is provided at the bottom of the support 22, and the top two sides of the tool holder 23 are rotatably connected to the mounting base 25 respectively. The mounting base 25 is fixed on the support 22, so that the top of the tool holder 23 can rotate freely around the mounting base 25, and there is a certain distance between the tool holder 23 and the support 22.

[0022] A pressure sensor 26 is mounted on a support 22 below the mounting base 25. A turning tool 21 is detachably mounted on the bottom of the tool holder 23 and is fastened to the tool holder 23 by bolts. The pressure sensor 26 is located between the tool holder 23 and the support 22. In a free-hanging state, the pressure sensor 26 is located on one side of the tool holder 23. Slots 24 are provided on both sides of the tool holder 23. Each slot 24 is connected to the support 22 by a fastener. The fastener is a screw 6 that is movably placed within the slot 24. The screw 6 is vertically mounted on the support 22, and a nut is provided at the end of the screw 6. When the nut is tightened, the nut moves the tool holder 23 closer to the surface of the pressure sensor 26, allowing the pressure sensor 26 to contact the tool holder 23.

[0023] During use, the bottom of the cutting tool 21 contacts the workpiece, so the force exerted by the workpiece on the cutting tool 21 causes the tool holder 23 to tend to rotate around the mounting base 25. The compressive force generated by the rotation tendency acts on the pressure sensor 26, so that the impact force on the cutting tool 21 is sensed by the pressure sensor 26 in real time.

[0024] The specific cutting process is as follows: Figure 1 As shown, the chuck 18 drives the workpiece to rotate in the following direction: Figure 1 The middle arrow B points to the force exerted by the workpiece on the cutting tool 21 as follows: Figure 1 As indicated by the middle arrow A, the cutting tool 21 will drive the tool holder 23 to rotate towards the pressure sensor 26. However, since the pressure sensor 26 holds the tool holder 23 in place, the tool holder 23 remains stable. However, the pressure generated by the tool holder 23 on the pressure sensor 26 is always monitored.

[0025] The support 22 is installed on the free end of the two-axis gantry robot. Driven by the two-axis gantry robot, the tool holder 23 moves towards the clamping mechanism. If the detected pressure value exceeds the preset value that the cutting tool can withstand, the two-axis gantry robot drives the cutting tool 21 to rise rapidly, so that the cutting tool can quickly separate from the workpiece, thereby avoiding the possibility of the cutting tool 21 breaking.

[0026] Furthermore, the specific components of the two-axis gantry robot will be described below;

[0027] like Figure 1 As shown, the two-axis gantry robot includes a mounting beam 8, one end of which is connected to a support plate 17, and the other end of the support plate 17 is connected to a strip seat 11 via a bracket 9. The strip seat 11 is located on the top of the robot body 1. A second linear drive module 13 is provided on the top of the mounting beam 8. A second support guide rail 7 is installed on the side of the mounting beam 8 near the clamping mechanism. The second support guide rail 7 is connected to the vertical frame 15 via a slider, and the vertical frame 15 and the second linear drive module 13 are connected by a connecting frame (such as...). Figure 1 Connected to (pointed to by the middle arrow C);

[0028] A vertically downward-facing third support rail 14 and a third linear drive module 16 are mounted on the side of the vertical frame 15 near the clamping mechanism. The third support rail 14 is connected to the top of the support 22 via a slider, and the slider and the third linear drive module 16 are connected via a connecting frame (such as...). Figure 1 Connected to (pointed to by the middle arrow C);

[0029] Specifically, the second linear drive module 13 is used to drive the vertical frame 15 to move horizontally left and right, so that the cutting tool can also move left and right, while the third linear drive module 16 drives the cutting tool to move up and down, so that the cutting tool has the freedom in both horizontal and vertical directions, so that the cutting tool can process along the surface of the workpiece.

[0030] Furthermore, a control box 19 is provided on the side of the support plate 17 away from the clamping mechanism, and the surface of the control box 19 is provided with an operation screen 20 and operation buttons.

[0031] This application also includes a controller, which is connected to the first linear drive module 2, the second linear drive module 13, the third linear drive module 16, the pressure sensor 26, the operation screen 20, and the operation buttons. The controller here is a host or a PLC logic controller. The controller is located inside the control box 19. The controller is equivalent to the "brain" of the horizontal machine tool. Under the control of the controller, the above-mentioned components operate according to the set path.

[0032] Furthermore, a large amount of debris is generated during the cutting process. This debris falls onto the surface of the machine body 1. In order to quickly remove the debris, a material trough 10 is provided on the machine body 1 between the two first support guide rails 3. The end of the material trough 10 away from the support plate 17 is connected to the outside. A guide plate 12 is installed in the material trough 10. The guide plate 12 is inclined towards the opening of the material trough 10, so that the debris can fall along the guide plate 12. A material container can be placed at the bottom of the guide plate 12, or the debris can be allowed to fall to the bottom of the guide plate 12 and accumulate for subsequent processing.

[0033] Based on the above embodiments, further optimization is possible: a positioning bolt is threaded onto the connecting frame between the movable seat 4 and the first linear drive module 2, and a handwheel (e.g., ...) is provided at the end of the positioning bolt. Figure 1 (As indicated by the middle arrow D), after the center pins the workpiece, the positioning bolts can be driven by the handwheel to press against the side of the machine body 1, further increasing the stability of the moving seat.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A CNC horizontal lathe equipped with a protective mechanism, comprising a machine body (1), characterized in that, A clamping mechanism for clamping workpieces is provided on the upper part of the machine body (1); A cutting mechanism is provided above the clamping mechanism. The cutting mechanism includes a support (22). A tool holder (23) is provided at the bottom of the support (22). The top two sides of the tool holder (23) are rotatably connected to the mounting base (25). The mounting base (25) is fixed on the support (22). A pressure sensor (26) is installed on the support (22) below the mounting base (25). A cutting tool (21) is detachably mounted on the bottom of the tool holder (23). The tool holder (23) has strip grooves (24) on both sides. Each strip groove (24) is connected to the support (22) by fasteners. The tool holder (23) is placed on the pressure sensor (26) so that the impact force on the cutting tool (21) can be sensed by the pressure sensor (26) in real time. The support (22) is installed on the free end of the two-axis gantry robot. Driven by the two-axis gantry robot, the tool holder (23) moves towards the clamping mechanism.

2. The CNC horizontal lathe equipped with a protective mechanism as described in claim 1, characterized in that, The clamping mechanism includes a chuck (18) and a tailstock (5). The chuck (18) and the tailstock (5) are coaxial, and the chuck (18) is rotatably mounted on a support plate (17). A drive device connected to the chuck (18) is installed on the side of the support plate (17) away from the tailstock (5). The tailstock (5) is mounted on the movable seat (4), and the two ends of the movable seat (4) are respectively mounted on the first support rail (3) via sliders. The first support rail (3) is set on the top of the body (1). One end of the movable seat (4) is connected to the first linear drive module (2) through the frame. The first linear drive module (2) is set on the side of the machine body (1). The workpiece is held in the chuck (18). The first linear drive module (2) drives the tailstock (5) to move towards the workpiece, so that the tip of the tailstock (5) abuts against the end of the workpiece.

3. The CNC horizontal lathe equipped with a protective mechanism as described in claim 2, characterized in that, The two-axis gantry robot includes a mounting beam (8), one end of which is connected to a support plate (17), and the other end of the support plate (17) is connected to a strip seat (11) via a bracket (9). The strip seat (11) is located on the top of the robot body (1). The top of the mounting beam (8) is provided with a second linear drive module (13). The mounting beam (8) is provided with a second support rail (7) on the side near the clamping mechanism. The second support rail (7) is connected to the vertical frame (15) through a slider. The vertical frame (15) is connected to the second linear drive module (13) through the frame. A vertically downward-oriented third support rail (14) and a third linear drive module (16) are installed on the side of the vertical frame (15) near the clamping mechanism. The third support rail (14) is connected to the top of the support (22) through a slider, and the slider is connected to the third linear drive module (16) through the frame.

4. The CNC horizontal lathe equipped with a protective mechanism as described in claim 3, characterized in that, It also includes a controller, which is connected to the first linear drive module (2), the second linear drive module (13), the third linear drive module (16), and the pressure sensor (26).

5. The CNC horizontal lathe equipped with a protective mechanism as described in claim 4, characterized in that, A control box (19) is provided on the side of the support plate (17) away from the clamping mechanism. The surface of the control box (19) is provided with an operation screen (20) and operation buttons that are connected to the controller.

6. The CNC horizontal lathe equipped with a protective mechanism as described in claim 3 or 5, characterized in that, A material equalization trough (10) is provided on the body (1) between the two first support guide rails (3). The end of the material equalization trough (10) away from the support plate (17) is connected to the outside. A guide plate (12) is installed in the material equalization trough (10). The guide plate (12) is inclined towards the opening direction of the material equalization trough (10).

7. The CNC horizontal lathe equipped with a protective mechanism as described in claim 1, characterized in that, The fastener is a screw (6) that is movably placed in the strip groove (24). The screw (6) is vertically set on the support (22), and a nut is provided at the end of the screw (6).

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