Turnover plate mechanism

Abstract

The invention discloses a plate turnover mechanism which comprises a base plate and a supporting frame, one end of the base plate is hinged to the supporting frame, two main driving devices are symmetrically arranged on the two sides or the bottom face of the base plate, and the main driving devices can drive the base plate to turn over in the horizontal state and the vertical state. The device further comprises a positioning driving mechanism located between the two main driving devices, the distance between the positioning driving mechanism and the two main driving devices is equal, the positioning driving mechanism comprises a detection device, a braking device and an auxiliary driving device, and the auxiliary driving device can drive the base plate to overturn in the horizontal state and the vertical state. And when the detection device detects that the base plate is overturned to the vertical state, the braking device brakes the auxiliary driving device. The base plate can be turned over between the horizontal state and the vertical state more rapidly through the auxiliary driving device, the auxiliary driving device can conduct braking when the base plate is in the vertical state, accurate positioning can be achieved without a check block, and the base plate can be accurately kept at the machining position.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of machine tool processing, and in particular to a turnover plate mechanism. BACKGROUND

[0002] In a conventional large five-axis turnover plate milling machining center, the base plate of the turnover plate mechanism is clamped to the worktable by a worktable clamping device, and then an oil cylinder is directly used to drive the base plate to perform a turnover operation. The turnover speed is relatively slow, which affects the overall production efficiency. In addition, after the turnover is completed, the positioning accuracy is often not ideal, and additional stop blocks need to be added for mechanical positioning. This can easily cause a large mechanical impact on the worktable when it is turned to the correct position, thereby affecting the positioning accuracy of the workpiece and the reliability of the turnover plate mechanism, and further affecting the machining quality of the workpiece. SUMMARY

[0003] The present application provides a turnover plate mechanism to overcome the above technical problems.

[0004] To achieve the above purpose, the technical solution of the present application is as follows: A turnover plate mechanism, comprising: a base plate and a support frame, one end of the base plate is hinged to the support frame, two main drive devices are symmetrically arranged on both sides or the bottom surface of the base plate, and the main drive devices can drive the base plate to realize turnover between a horizontal state and a vertical state; Further comprising a positioning drive mechanism located between the two main drive devices, the positioning drive mechanism has an equal distance from the two main drive devices, the positioning drive mechanism comprises a detection device, a brake device and an auxiliary drive device, and the auxiliary drive device can drive the base plate to realize turnover between the horizontal state and the vertical state; When the detection device detects that the base plate is turned to the vertical state, the brake device brakes the auxiliary drive device.

[0005] Further, the support frame comprises a base and a drive bracket vertically fixed on one side of the base, and both ends of the main drive device are hinged to the base and the drive bracket, respectively.

[0006] Further, the main drive device comprises an oil cylinder, and both ends of the oil cylinder are hinged to the base plate and the support frame, respectively.

[0007] Further, the support frame further comprises two vertical columns oppositely arranged on both ends of the base and a cross beam for connecting the upper ends of the two vertical columns, and the base, the vertical columns and the cross beam form a window capable of accommodating the base plate in the vertical state.

[0008] Further, the auxiliary driving device comprises a direct drive motor, a lead screw and a lead screw nut, the direct drive motor is hinged with the support frame, the mover of the direct drive motor is fixedly connected with the lead screw nut, the lead screw nut is sleeved on the lead screw, and one end of the lead screw is hinged with the base plate.

[0009] Further, the detection device is a circular grating encoder arranged in the direct drive motor, and the braking device is a pneumatic clamp arranged in the direct drive motor, and the pneumatic clamp is used for braking the mover of the direct drive motor.

[0010] Further, the base and the bottom of the driving support are each provided with an adjusting pad iron.

[0011] Beneficial effects: The plate turning mechanism provided by the application provides main driving force for the turning of the base plate through two main driving devices, provides additional driving force for the base plate through the auxiliary driving device of the positioning driving mechanism, so that the base plate can be more rapidly turned between the horizontal state and the vertical state, and the auxiliary driving device can be braked when the base plate is in the vertical state through cooperation of the detection device and the braking device, so that accurate positioning can be achieved without the need of a stop block, and the base plate can be accurately kept at a machining position. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0013] Figure 1 FIG. 1 is a structural schematic view of the plate turning mechanism disclosed by the application (the base plate is in a horizontal state); Figure 2 FIG. 2 is a top view of the plate turning mechanism disclosed by the application (the base plate is in a vertical state); Figure 3 FIG. 3 is a front view of the plate turning mechanism disclosed by the application (the base plate is in a vertical state); Figure 4 FIG. 4 is a side view of the plate turning mechanism disclosed by the application (the base plate is in a vertical state); Figure 5 FIG. 5 is a sectional view of the positioning driving mechanism of the plate turning mechanism disclosed by the application.

[0014] In the drawings: 1, base plate; 2, support frame; 21, base; 22, driving support; 23, column; 24, beam; 3, main driving device; 31, oil cylinder; 4, detection device; 5, brake device; 6, auxiliary driving device; 61, direct drive motor; 62, screw; 63, screw nut; 7, adjusting pad iron; 8, workbench. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0016] The present embodiment provides a turnover mechanism, as shown in Figure 1 including a base plate 1 and a support frame 2, one end of the base plate 1 is hinged to the support frame 2, two main driving devices 3 are symmetrically arranged on both sides or the bottom surface of the base plate 1, and the main driving devices 3 can drive the base plate 1 to realize the turnover between the horizontal state and the vertical state; In the present embodiment, the base plate 1 is provided with a workbench clamping device, and the workbench 8 is clamped on the base plate 1 through the workbench clamping device (the workbench clamping device is prior art, which will not be described here); Further comprising a positioning driving mechanism located between the two main driving devices 3, the spacing between the positioning driving mechanism and the two main driving devices 3 is equal, as shown in Figure 1 and Figure 5 The positioning driving mechanism includes a detection device 4, a brake device 5 and an auxiliary driving device 6, and the auxiliary driving device 6 can drive the base plate 1 to realize the turnover between the horizontal state and the vertical state; When the detection device 4 detects that the base plate 1 is turned to the vertical state, the brake device 5 brakes the auxiliary driving device 6.

[0017] A flap mechanism provided in this embodiment uses two main driving devices 3 to provide the main driving force for the flipping of the substrate 1, and uses the auxiliary driving device 6 of the positioning driving mechanism to provide an additional driving force for the substrate 1, so that the substrate 1 can be flipped between the horizontal state and the vertical state more quickly; by the cooperation of the detection device 4 and the braking device 5, the auxiliary driving device 6 can implement braking when the substrate 1 is in the vertical state, and accurate positioning can be achieved without a stop block, enabling the substrate 1 to be accurately maintained at the processing position.

[0018] Specifically, as Figure 4 shown, the support frame 2 includes a base 21 and a driving bracket 22 vertically fixed on one side of the base 21. Both ends of the main driving device 3 are hinged to the base 21 and the driving bracket 22 respectively. In this embodiment, the driving bracket 22 is fixed to the base 21 by bolts.

[0019] Specifically, as Figure 2 shown, the main driving device 3 includes an oil cylinder 31. Both ends of the oil cylinder 31 are hinged to the substrate 1 and the support frame 2 respectively. Supports for hinging are fixed on both the substrate 1 and the support frame 2, and the oil cylinder 31 is hinged to the supports through hinge shafts.

[0020] Specifically, as Figure 3 shown, the support frame 2 further includes two columns 23 oppositely arranged at both ends of the base 21 and a cross beam 24 for connecting the upper ends of the two columns. The base 21, the columns 23 and the cross beam 24 can be fixedly connected by bolts to form a window that can accommodate the substrate 1 in the vertical state. The support frame 2 forms a structure similar to a "square" shape, which can ensure the overall fixed stiffness of the structure when the substrate 1 is in the vertical state, thereby ensuring processing stability and improving processing accuracy.

[0021] Specifically, as Figure 5 shown, the auxiliary driving device 6 includes a direct drive motor 61, a lead screw 62 and a lead screw nut 63. The direct drive motor 61 is hinged to the support frame 2. The mover of the direct drive motor 61 is fixedly connected to the lead screw nut 63 (the lead screw nut 63 is embedded in the mover), the lead screw nut 63 is sleeved on the lead screw 62, and one end of the lead screw 62 is hinged to the substrate 1

[0022] Specifically, the detection device 4 is a circular grating encoder provided in the direct drive motor 61, and the braking device 5 is a pneumatic clamp provided in the direct drive motor 61. The pneumatic clamp is used to brake the mover of the direct drive motor 61.

[0023] In the embodiment, the pneumatic clamp is fixed on the stator of the direct drive motor 61, the code disc of the circular grating encoder is fixed on the outer periphery of the rotor, and the light emitting device of the circular grating encoder is fixed on the stator. When debugging, the control system of the machining center obtains the number of turns and the angle of the rotor when the substrate 1 is in the vertical state through the circular grating encoder. In subsequent formal use, when the circular grating encoder detects that the rotor rotates to the number of turns and the angle corresponding to the vertical state, it indicates that the substrate 1 is in the vertical state, at this time the control system clamps the rotor of the direct drive motor 61 through the pneumatic clamp, and at the same time the control system of the machining center controls the oil cylinder 31 to stop feeding. Specifically, as shown in Figure 4 The base 21 and the bottom of the driving support 22 are both fixed with the adjusting pads 7, which facilitates the leveling operation when the support frame 2 is installed to the machining center. Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A flip-plate mechanism, characterized in that, include: The substrate (1) and the support frame (2) are provided. One end of the substrate (1) is hinged to the support frame (2). Two main drive devices (3) are symmetrically arranged on both sides or the bottom of the substrate (1). The main drive devices (3) can drive the substrate (1) to achieve the flipping of the horizontal and vertical states. It also includes a positioning drive mechanism located between the two main drive devices (3), the positioning drive mechanism being equidistant from the two main drive devices (3), the positioning drive mechanism including a detection device (4), a braking device (5) and an auxiliary drive device (6), the auxiliary drive device (6) being able to drive the substrate (1) to achieve flipping between horizontal and vertical states; When the detection device (4) detects that the substrate (1) has been flipped to a vertical position, the braking device (5) brakes the auxiliary drive device (6).

2. The flip-plate mechanism according to claim 1, characterized in that, The support frame (2) includes a base (21) and a drive bracket (22) vertically fixed to one side of the base (21). The two ends of the main drive device (3) are respectively hinged to the base (21) and the drive bracket (22).

3. The flip-plate mechanism according to claim 1, characterized in that, The main drive device (3) includes a hydraulic cylinder (31), the two ends of which are hinged to the base plate (1) and the support frame (2) respectively.

4. A flip-plate mechanism according to claim 2, characterized in that, The support frame (2) also includes two columns (23) disposed opposite to each other at both ends of the base (21) and a crossbeam (24) for connecting the upper ends of the two columns. The base (21), columns (23) and crossbeam (24) form a window that can accommodate the substrate (1) in a vertical state.

5. A flip-plate mechanism according to claim 1, characterized in that, The auxiliary drive device (6) includes a direct drive motor (61), a lead screw (62) and a lead screw nut (63). The direct drive motor (61) is hinged to the support frame (2). The mover of the direct drive motor (61) is fixedly connected to the lead screw nut (63). The lead screw nut (63) is sleeved on the lead screw (62). One end of the lead screw (62) is hinged to the base plate (1).

6. A flip-plate mechanism according to claim 1, characterized in that, The detection device (4) is a circular grating encoder installed in the direct drive motor (61), and the braking device (5) is a pneumatic clamp installed in the direct drive motor (61). The pneumatic clamp is used to brake the mover of the direct drive motor (61).

7. A flip-plate mechanism according to claim 1, characterized in that, It also includes adjusting shims (7), and adjusting shims (7) are provided at the bottom of both the base (21) and the drive bracket (22).

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