Protective device for machining equipment

Abstract

The utility model discloses a protective device for machining equipment, which relates to the technical field of machining equipment and particularly comprises a shell, one side of the shell is connected with a drilling machine, the bottom of the shell is rotatably connected with a connecting shaft, the top of the connecting shaft extends into the shell and is connected with a motor through a transmission mechanism, and the motor is fixed on the side surface of the shell. An L-shaped mounting frame is mounted on one side of the bottom of the shell, a tool apron is rotationally connected to the bottom of the L-shaped mounting frame, a tool is mounted at the bottom of the tool apron, the top of the tool apron penetrates through the bottom of the L-shaped mounting frame and is connected with a square connecting block, and a U-shaped frame is mounted at the bottom of a connecting shaft. Through cooperation of the U-shaped frame and the square connecting block, the motor can drive the tool to rotate, meanwhile, stress of the tool during working can be detected through the pressure sensor, when the tool is clamped, the control box can turn off the motor in time, so that the tool stops rotating, the tool is prevented from being broken due to too large stress, and the protection effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing equipment, in particular to a protective device for mechanical processing equipment. Background Art

[0002] Machining refers to the process of changing the shape, size or performance of a workpiece through a mechanical device. Currently in industrial processing, the workpiece is generally machined through a machine tool or a machining center. Machine tools include drilling machines, lathes, milling machines and other types, which are used to perform different mechanical processing on the workpiece.

[0003] When machining a workpiece, the existing drilling machine generally fixes the workpiece on the drilling machine table through a fixture, then drives the drill bit toward the workpiece through the feed mechanism, and drives the drill bit to rotate through the power mechanism to drill the workpiece. However, during the drilling process, when the drill bit gets stuck, the power mechanism still works normally because there is no protective device for the drill bit, which makes the drill bit easily break due to excessive force. To this end, we propose a protective device for mechanical processing equipment. Utility Model Content

[0004] In view of the shortcomings of existing mechanical processing equipment, the utility model provides a protective device for mechanical processing equipment, which has the advantage of protecting the tool to prevent the tool from being stuck during processing and being broken due to excessive force, thereby solving the problems raised in the above background technology.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A protective device for mechanical processing equipment is designed, comprising a housing, a connecting shaft is rotatably connected to the bottom of the housing, the top of the connecting shaft extends into the housing and is connected to a motor through a transmission mechanism, and the motor is fixed on the side of the housing;

[0007] An L-shaped mounting frame is installed on one side of the bottom of the shell, the bottom of the L-shaped mounting frame is rotatably connected to a knife seat, a knife is installed at the bottom of the knife seat, the top of the knife seat passes through the bottom of the L-shaped mounting frame and is connected to a square connecting block, a U-shaped frame is installed at the bottom of the connecting shaft, and the square connecting block extends into the inside of the U-shaped frame;

[0008] Mounting grooves are provided on both sides of the U-shaped frame, and a pressure sensor is installed in each mounting groove. One end of each pressure sensor extends out of the mounting groove and contacts the side of the square connecting block. A control box is installed on the side of the shell, and a controller is installed in the control box. The pressure sensor is connected to the controller in the control box by rotating the power-on device, and the control box is connected to the motor through a wire.

[0009] Preferably, the rotating energized device includes a energized slip ring provided at the bottom of the shell, the energized slip ring is coaxially arranged on the connecting shaft, the stator of the energized slip ring is fixed at the bottom of the shell, the rotor of the energized slip ring is fixed together with the connecting shaft, the two pressure sensors are connected to the energized slip ring rotor connector through wires, and the stator of the energized slip ring is connected to the controller in the control box through wires.

[0010] Preferably, the motor is covered with a dustproof mesh cover.

[0011] Preferably, the transmission mechanism includes a support seat fixed to one side of the inner part of the shell, a second rotating shaft is provided between the support seat and the top of the shell, two ends of the second rotating shaft are respectively connected to the support seat and the shell for rotation, one end of the second rotating shaft passes through the shell and is connected to the motor, a second gear is installed on the second rotating shaft, a first rotating shaft is provided below the second rotating shaft, two ends of the first rotating shaft are connected to the support seat and the side wall of the shell for rotation, a first gear is installed on the first rotating shaft, the first gear is meshed with the second gear, and the diameter of the second gear is smaller than the diameter of the first gear;

[0012] One end of the first rotating shaft passes through the supporting seat, and the end of the first rotating shaft is connected with the second bevel gear, the side surface of the connecting shaft is installed with the first bevel gear, and the first bevel gear is meshed with the second bevel gear.

[0013] Preferably, an oil filling hole is provided on the top of the housing.

[0014] Preferably, there is a gap between the bottom of the support base and the shell.

[0015] Compared with the prior art, when the utility model is in use, the motor can drive the tool to rotate through the cooperation of the U-shaped frame and the square connecting block, and at the same time, the force applied to the tool during operation can be detected through the pressure sensor. When the tool is stuck, the control box can turn off the motor in time to stop the tool from rotating, thereby avoiding the tool from being broken due to excessive force, thereby improving the protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the drilling machine structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the shell structure of the utility model.

[0018] Figure 3 It is a front cross-sectional view of the shell structure of the utility model.

[0019] Figure 4 This is a diagram showing the U-shaped frame and the knife holder connection structure of the utility model.

[0020] In the figure: 1. mounting slot; 2. pressure sensor; 3. second rotating shaft; 4. second gear; 5. first gear; 6. housing; 7. motor; 8. control box; 9. L-shaped mounting bracket; 10. tool holder; 11. powered slip ring; 12. tool; 13. first rotating shaft; 14. square connecting block; 15. U-shaped bracket; 16. support seat; 17. connecting shaft; 18. first bevel gear; 19. second bevel gear. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figures 1 to 4 The utility model provides a technical solution: a protective device for mechanical processing equipment, including a housing 6 connected to a drilling machine bed on one side, a connecting shaft 17 rotatably connected to the bottom of the housing 6, the top of the connecting shaft 17 extends into the interior of the housing 6 and is connected to a motor 7 through a transmission mechanism, the motor 7 is fixed on the side of the housing 6, an L-shaped mounting frame 9 is installed on one side of the bottom of the housing 6, a tool holder 10 is rotatably connected to the bottom of the L-shaped mounting frame 9, a tool 12 is installed at the bottom of the tool holder 10, the top of the tool holder 10 passes through the bottom of the L-shaped mounting frame 9 and is connected to a square connecting block 14, a U-shaped frame 15 is installed at the bottom of the connecting shaft 17, and the square connecting block 14 extends into the interior of the U-shaped frame 15. When in use, the motor 7 can drive the connecting shaft 17 to rotate through the transmission mechanism, and then the tool holder 10 and the tool 12 can be driven to rotate through the cooperation of the U-shaped frame 15 and the square connecting block 14 to perform drilling processing on the workpiece.

[0023] like Figure 2 and Figure 4As shown, both sides of the U-shaped frame 15 are provided with mounting grooves 1, and each mounting groove 1 is provided with a pressure sensor 2, and one end of each pressure sensor 2 extends out of the mounting groove 1 and contacts the side of the square connecting block 14. A control box 8 is provided on the side of the housing 6, and a controller is provided in the control box 8. The pressure sensor 2 is connected to the controller in the control box 8 by rotating the power supply device, and the control box 8 is connected to the motor 7 through a wire. The controller in the control box 8 is a PLC controller or a control main board. During drilling, the square connecting block 14 will apply pressure to the pressure sensor 2 during the rotation of the tool 12. When the tool 12 is stuck, the square connecting block 14 stops rotating, and the motor 7 still drives the U-shaped frame 15 to rotate through the connecting shaft 17, thereby increasing the pressure applied by the square connecting block 14 to the pressure sensor 2. The pressure sensor 2 transmits the detection signal to the controller in the control box 8, and controls the motor 7 to stop rotating, so as to prevent the tool 12 from being broken due to excessive force, and protect the tool 12.

[0024] The pressure sensor 2 is also connected to the drilling machine control system through the rotating power supply device. For example, in a CNC control system, when the tool 12 is stuck, the pressure sensor 2 also transmits the signal synchronously to the drilling machine control system, and the drilling machine control system can control the drilling machine feed mechanism to stop working to prevent the tool 12 from colliding with the workpiece and breaking during the feeding process.

[0025] Specifically, when the utility model is in use, the motor 7 drives the connecting shaft 17 to rotate through the transmission mechanism, and the connecting shaft 17 drives the tool 12 to rotate under the action of the U-shaped frame 15 and the square connecting block 14. During the rotation of the tool 12, the square connecting block 14 on the top of the tool holder 10 will apply pressure to the pressure sensors 2 on both sides of the U-shaped frame 15. The pressure sensor 2 transmits the detected signal to the controller in the control box 8 in real time. At the same time, the adjustment mechanism drives the tool 12 to move downward to perform drilling processing on the workpiece to be processed. During the processing, when the tool 12 is stuck, the tool holder 10 and the square connecting block 14 stop rotating, and the motor 7 still drives the connecting shaft 17 to rotate through the transmission mechanism, thereby increasing the pressure applied by the square connecting block 14 to the pressure sensor 2. When the controller receives that the pressure signal transmitted by the pressure sensor 2 exceeds the preset value, the controller promptly controls the motor 7 to stop working, thereby protecting the tool 12 and preventing the tool 12 from breaking.

[0026] Further, such as Figure 1As shown, the rotating energized device includes a energized slip ring 11 provided at the bottom of the shell 6, the stator of the energized slip ring 11 is fixed at the bottom of the shell 6, the rotor of the energized slip ring 11 is fixed together with the connecting shaft 17, the two pressure sensors 2 are connected to the rotor joint of the energized slip ring 11 through a wire, and the stator of the energized slip ring 11 is connected to the controller in the control box 8 through a wire. The energized slip ring 11 can maintain normal transmission of the pressure of the pressure sensor 2 during the process of the pressure sensor 2 following the rotation of the connecting shaft 17, so that the controller can receive the data transmitted by the pressure sensor 2 in real time and protect the tool 12 in real time.

[0027] Furthermore, a dustproof mesh cover is provided on the motor 7 to provide dustproof protection for the motor 7 and prevent dust in the air or debris generated during processing from entering the motor 7 and damaging the motor 7 .

[0028] Further, such as Figure 3 As shown, the transmission mechanism includes a support base 16 fixed to one side of the interior of the shell 6, a second rotating shaft 3 is provided between the support base 16 and the top of the shell 6, two ends of the second rotating shaft 3 are respectively rotatably connected with the support base 16 and the shell 6, one end of the second rotating shaft 3 passes through the shell 6 and is connected to the motor 7, a second gear 4 is installed on the second rotating shaft 3, a first rotating shaft 13 is provided below the second rotating shaft 3, two ends of the first rotating shaft 13 are rotatably connected with the support base 16 and the side wall of the shell 6, a first gear 5 is installed on the first rotating shaft 13, and the first gear 5 is meshed with the second gear 4.

[0029] One end of the first rotating shaft 13 passes through the support seat 16, and the end of the first rotating shaft 13 is connected to the second bevel gear 19, and the side of the connecting shaft 17 is installed with the first bevel gear 18, and the first bevel gear 18 is meshed with the second bevel gear 19. Therefore, under the cooperation of the first gear 5 and the second gear 4, the motor 7 can drive the first rotating shaft 13 to rotate, and at the same time, the second bevel gear 19 rotates synchronously with the first rotating shaft 13, which can drive the first bevel gear 18 to rotate, and then the connecting shaft 17 can be driven to rotate through the motor 7. When in use, the motor 7 can drive the tool 12 to rotate through the connecting shaft 17, so that the tool 12 can perform drilling processing on the workpiece.

[0030] Among them, the size of the first gear 5 is larger than that of the second gear 4, the size of the first bevel gear 18 is larger than that of the second bevel gear 19, and the motor 7 can drive the connecting shaft 17 to rotate through a two-stage reduction, which can increase the torque of the motor 7 and further improve the load capacity of the motor 7, thereby avoiding the motor 7 from being burned due to excessive load during drilling.

[0031] Further, such as Figure 2 As shown, an oil injection hole is provided on the top of the housing 6. The staff can inject lubricating oil into the housing 6 through the oil injection hole to reduce the wear rate of the transmission mechanism and cool the transmission mechanism at the same time. Figure 2 As shown in , the oil filling hole is also sealed by a sealing plug to prevent leakage of lubricating oil.

[0032] Furthermore, there is a gap between the bottom of the support seat 16 and the housing 6 , and the lubricating oil can flow along the gap between the support seat 16 and the housing 6 to the other side of the support seat 16 to lubricate the first gear 5 and the second gear 4 .

[0033] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A protective device for machining equipment, comprising a housing (6), characterized in that: The bottom of the housing (6) is rotatably connected to a connecting shaft (17), the top of the connecting shaft (17) extends into the interior of the housing (6) and is connected to a motor (7) through a transmission mechanism, and the motor (7) is fixed on the side of the housing (6); An L-shaped mounting frame (9) is installed on one side of the bottom of the housing (6); the bottom of the L-shaped mounting frame (9) is rotatably connected to a knife seat (10); a knife (12) is installed on the bottom of the knife seat (10); the top of the knife seat (10) passes through the bottom of the L-shaped mounting frame (9) and is connected to a square connecting block (14); a U-shaped frame (15) is installed on the bottom of the connecting shaft (17); and the square connecting block (14) extends into the interior of the U-shaped frame (15); Both sides of the U-shaped frame (15) are provided with mounting grooves (1), each mounting groove (1) is provided with a pressure sensor (2), one end of each pressure sensor (2) extends out of the mounting groove (1) and contacts the side of the square connection block (14), a control box (8) is installed on the side of the housing (6), a controller is installed in the control box (8), the pressure sensor (2) is connected to the controller in the control box (8) by rotating the power supply device, and the control box (8) is connected to the motor (7) by a wire.

2. A protective device for mechanical processing equipment according to claim 1, characterized in that: The rotating energizing device comprises an energizing slip ring (11) provided at the bottom of a housing (6), the energizing slip ring (11) being coaxially arranged on a connecting shaft (17), a stator of the energizing slip ring (11) being fixed at the bottom of the housing (6), a rotor of the energizing slip ring (11) being fixed together with the connecting shaft (17), two pressure sensors (2) being connected to the rotor joint of the energizing slip ring (11) via a wire, and a stator of the energizing slip ring (11) being connected to a controller in a control box (8) via a wire.

3. A protective device for machining equipment according to claim 1, characterized in that: The motor (7) is covered with a dustproof net cover.

4. A protective device for machining equipment according to claim 1, characterized in that: The transmission mechanism comprises a support seat (16) fixed to one side of the inner part of the shell (6); a second rotating shaft (3) is arranged between the support seat (16) and the top of the shell (6); two ends of the second rotating shaft (3) are rotatably connected to the support seat (16) and the shell (6) respectively; one end of the second rotating shaft (3) passes through the shell (6) and is connected to the motor (7); a second gear (4) is installed on the second rotating shaft (3); a first rotating shaft (13) is arranged below the second rotating shaft (3); two ends of the first rotating shaft (13) are rotatably connected to the support seat (16) and the side wall of the shell (6); a first gear (5) is installed on the first rotating shaft (13); the first gear (5) is meshed with the second gear (4); and the diameter of the second gear (4) is smaller than the diameter of the first gear (5); One end of the first rotating shaft (13) passes through the supporting seat (16), and the end of the first rotating shaft (13) is connected to the second bevel gear (19), and the side of the connecting shaft (17) is installed with the first bevel gear (18), and the first bevel gear (18) is meshed with the second bevel gear (19).

5. The protective device for machining equipment according to claim 1, characterized in that: The top of the housing (6) is provided with an oil filling hole.

6. A protective device for machining equipment according to claim 4, characterized in that: There is a gap between the bottom of the support seat (16) and the shell (6).

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