Workpiece taking and placing device of numerical control machining center

Abstract

The utility model relates to the technical field of machine tools, and particularly discloses a workpiece taking and placing device of a numerical control machining center, which comprises a machine tool outer cover and a cross-shaped frame, and the cross-shaped frame is arranged at the top of the machine tool outer cover through a window; the device comprises a movable driving assembly, a lifting driving assembly, a lifting arm, a rotating driving assembly and a rotating disc, and the rotating disc is arranged on the front face of the lifting arm and is in driving connection with the rotating driving assembly. The first mechanical clamping jaw and the second mechanical clamping jaw are used for grabbing or placing workpieces, the visual detection assembly is used for detecting the sizes of the workpieces, and the blowing assembly is used for blowing scraps to the workpieces. And in addition, chippings of the machined rectangular workpiece can be removed, the labor intensity of operators is reduced, the production safety coefficient is increased, and high practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining machine tools, in particular to a workpiece picking and placing device for a numerical control machining center. Background Art

[0002] CNC is the abbreviation of digital control. CNC technology is a method of controlling mechanical motion and processing processes using digital information. CNC machining centers are high-efficiency automated machine tools composed of mechanical equipment and CNC systems, which are suitable for processing complex parts. CNC machining centers have strong comprehensive processing capabilities and high processing accuracy. In particular, they can complete processing that many ordinary equipment cannot complete. When processing workpieces through CNC machining centers, the workpieces need to be transported and placed. Existing CNC machining machines generally manually place rectangular workpieces. Manual placement of rectangular workpieces has the following defects: (1) The rectangular workpieces that have been processed need to be manually cleaned of debris, which increases the labor intensity of the operators; (2) The burden on the staff is increased, and the rectangular workpieces are easy to injure the staff, causing serious production accidents.

[0003] In order to solve the above problems, the utility model discloses a pick-and-place device for a numerical control machining center. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model discloses a workpiece picking and placing device for a numerical control machining center.

[0005] To achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: A workpiece picking and placing device for a CNC machining center, comprising:

[0006] A machine tool cover, wherein a window is provided on the top of the machine tool cover and is opposite to the workpiece clamping position;

[0007] A cross-shaped frame, the cross-shaped frame being arranged on the top of the machine tool housing by the window;

[0008] A mobile drive assembly, the mobile drive assembly being arranged on a side of the cross frame facing the window;

[0009] A lifting drive assembly, the lifting drive assembly facing the window and drivingly connected to the moving assembly;

[0010] A lifting arm, wherein the lifting arm is drivingly connected to the lifting drive assembly;

[0011] A rotary drive assembly, the rotary drive assembly being disposed on the back of the lifting arm;

[0012] The turntable is arranged on the front of the lifting arm and is driven by the rotary drive assembly. The turntable is provided with a first mechanical gripper and a second mechanical gripper for grabbing or placing the workpiece, a visual inspection assembly for detecting the size of the workpiece, and an air blowing assembly for blowing chips from the workpiece in a circular array around its center.

[0013] It is further preferred that the mobile drive component is a ball screw module or a rodless cylinder.

[0014] Further preferably, the lifting drive assembly is one of an electric push rod, a pneumatic push rod or a hydraulic push rod.

[0015] It is further preferred that the rotary drive assembly includes a first drive motor having an output shaft connected to a reducer, the reducer and the first drive motor are both arranged on the back of the lifting arm, and the drive shaft of the reducer passes through the lifting arm and is connected to the turntable.

[0016] It is further preferred that the first mechanical gripper includes two vertical plates arranged in parallel on the front of the turntable, a screw rod rotatably arranged between the two vertical plates and a second drive motor arranged on the inner side of one of the vertical plates, the screw rod has two threaded portions with opposite threads, and the two threaded portions are respectively provided with screw nuts, and the bottoms of the two screw nuts are respectively provided with electromagnets, the output shaft of the second drive motor passes through the vertical plate and is installed with a first pulley, the screw rod passes through the vertical plate on the same side as the second drive motor and is installed with a second pulley, and the first pulley and the second pulley are connected by a transmission belt.

[0017] Further preferably, the structure of the second mechanical gripper is consistent with that of the first mechanical gripper.

[0018] Further preferably, the visual detection assembly includes a visual detection camera and an annular light source, the visual detection camera is fixed on the turntable, and the annular light source is sleeved on the outer circumference of the visual detection camera.

[0019] Further preferably, the blowing assembly includes an air pump and a trumpet-shaped air tube, the air pump is fixed on the turntable, and the trumpet-shaped air tube is connected to the blowing port of the air pump.

[0020] The utility model achieves the following beneficial effects:

[0021] The utility model can adjust the rectangular workpiece according to its size to grab or place it, and can also clean up the debris of the rectangular workpiece after processing, thereby reducing the labor intensity of the operator, improving the production safety factor, and having strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure, and together with the description, serve to explain the principles of the present disclosure.

[0023] Figure 1 This is a schematic diagram of the overall structure disclosed in the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the rotary drive assembly disclosed in the present utility model;

[0025] Figure 3 This is a schematic structural diagram of the first mechanical gripper and the second mechanical gripper disclosed in the present utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the visual detection component disclosed in the present utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the blowing assembly disclosed in the utility model. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] Example

[0031] In order to solve the problems in the background technology of manually placing rectangular workpieces on the machining center or manually removing rectangular workpieces from the machining center, such as Figure 1-Figure 5 As shown, the utility model discloses a workpiece picking and placing device for a CNC machining center, comprising: a machine tool outer cover 10, a window 11 opposite to the workpiece clamping position is opened on the top of the machine tool outer cover;

[0032] A cross frame 20, which is arranged on the top of the machine tool housing by the window;

[0033] A mobile drive assembly 30, which is arranged on the side of the cross frame facing the window;

[0034] A lifting drive assembly 40, which faces the window and is in driving connection with the moving assembly;

[0035] A lifting arm 50, the lifting arm drive is connected to the lifting drive assembly;

[0036] A rotary drive assembly 110, which is provided on the back of the lifting arm;

[0037] The turntable 60 is arranged on the front of the lifting arm and is connected to the rotary drive assembly. The turntable is provided with a first mechanical gripper 70 and a second mechanical gripper 80 for grabbing or placing the workpiece, a visual inspection assembly 90 for detecting the size of the workpiece, and an air blowing assembly 100 for blowing chips from the workpiece in a circular array around its center.

[0038] Optionally, the mobile drive component in the present application is a ball screw module or a rodless cylinder, and the lifting drive component is an electric push rod, a pneumatic push rod or a hydraulic push rod. During the specific implementation process, if there are other types of mobile drive components or lifting drive components that can achieve the relevant functions of the present application, personnel in this technical field can adaptably select them.

[0039] refer to Figure 2 As shown, the rotary drive assembly in this embodiment includes a first drive motor 111 whose output shaft is connected to a reducer 112. The reducer and the first drive motor are both arranged on the back of the lifting arm, and the drive shaft of the reducer passes through the lifting arm and is connected to the turntable. Under the coordinated drive of the first drive motor and the reducer, the turntable will rotate accordingly. In addition, it can be understood that the turntable rotates by 90° each time.

[0040] refer to Figure 3 As shown, the first mechanical gripper in this embodiment includes two vertical plates 71 arranged in parallel on the front of the turntable, a screw rod 72 rotatably arranged between the two vertical plates and a second drive motor 73 arranged on the inner side of one of the vertical plates, the screw rod has two threaded parts 721 with opposite threads, and screw nuts 722 are respectively sleeved on the two threaded parts, and electromagnets 75 are respectively provided at the bottom of the two screw nuts. The output shaft of the second drive motor passes through the vertical plate and is installed with a first pulley 731, the screw rod passes through the vertical plate on the same side as the second drive motor and is installed with a second pulley 723, and the first pulley and the second pulley are connected by a transmission belt 74; based on the previous embodiment, the structure of the second mechanical gripper is consistent with that of the first mechanical gripper. According to the size of the rectangular workpiece to be visually detected, the spacing between the two electromagnets included in the first manipulator and the second manipulator in this application can be adjusted. In the specific implementation process, the two electromagnets can be moved closer or farther away from each other by driving the screw rod to rotate forward or reversely by the second drive motor.

[0041] like Figure 4As shown, in this embodiment, the visual inspection component includes a visual inspection camera 91 and an annular light source 92. The visual inspection camera is fixed on a turntable, and the annular light source is mounted on the periphery of the visual inspection camera. When inspecting the size of a rectangular workpiece, the light emitted by the annular light source will illuminate the rectangular workpiece. At the same time, the visual inspection camera will take a picture of the rectangular workpiece.

[0042] refer to Figure 5 As shown, the blowing assembly in this embodiment includes a blowing pump 101 and a trumpet-shaped blow tube 102. The blowing pump is fixed on the turntable, and the trumpet-shaped blow tube is connected to the blowing port of the blowing pump. When the rectangular workpiece on the machining center is removed, the gas blown out by the blowing pump will pass through the trumpet-shaped blow tube to the rectangular surface, thereby cleaning the debris remaining on the surface of the rectangular workpiece.

[0043] Based on the above description, the implementation principle of this application will be explained as follows:

[0044] First, a belt conveyor line is set outside the processing machine tool, and workpiece blanks and workpiece finished product recovery boxes are staggered on the belt conveyor line. Before grabbing the workpiece after processing on the machining center, the mobile drive component drives the lifting drive component to the top of the belt conveyor line and face the workpiece blank. At this time, the rotary drive component drives the turntable to rotate to first make the visual inspection component take a picture of the workpiece. According to the size of the workpiece blank detected by the visual inspection component, the two electromagnets of the first mechanical clamp are controlled to adjust the spacing. After the adjustment is completed, the rotary drive component drives the first mechanical clamp to be perpendicular to the workpiece blank, and then the lifting drive component drives the lifting arm to descend until the two electromagnets adsorb the workpiece blank. After this work is completed, all components are reset;

[0045] The mobile drive assembly brings the lifting drive assembly to the top of the window. After it is in place, the rotary drive assembly drives the turntable to rotate, first making the visual inspection assembly located above the processed rectangular workpiece, and the visual inspection assembly detects the size of the processed workpiece. Based on the detection result of the visual inspection assembly, the second mechanical gripper adjusts the distance between the two electromagnets. Then, the rotary drive assembly drives the turntable to rotate, and then makes the blowing assembly located above the processed rectangular workpiece. After this step is completed, the lifting drive assembly first drives the lifting arm to descend a certain height. After it is in place, the blowing assembly blows the chips off the processed rectangular workpiece. After this step is completed, the rotary drive assembly drives the lifting arm to descend a certain height. After it is in place, the blowing assembly blows the chips off the processed rectangular workpiece. The driving assembly drives the turntable to rotate, and then the second mechanical gripper is located above the processed rectangular workpiece. The lifting drive assembly drives the lifting arm to descend again. After it descends into place, the processed rectangular workpiece is adsorbed by the two electromagnets of the second mechanical gripper. After this step is completed, the lifting drive assembly drives the lifting arm to rise, and the rotary drive assembly drives the turntable to rotate again, and then the first mechanical gripper is located perpendicular to the machine table. After this step is completed, the lifting drive assembly drives the lifting arm to descend. When the two electromagnets of the first mechanical gripper stop adsorbing the workpiece blank, the workpiece blank will be placed on the machine table. After this step is completed, all components are reset.

[0046] The mobile drive assembly carries the lifting drive assembly to the top of the workpiece finished product recovery box. The lifting drive assembly first drives the lifting arm to descend, and then the rotary drive assembly drives the turntable to rotate so that the second mechanical gripper is perpendicular to the top of the workpiece finished product recovery box. The lifting drive assembly then drives the lifting arm to descend again. When the two electromagnets of the second mechanical gripper stop adsorbing the processed workpiece, the processed workpiece will be placed in the workpiece finished product recovery box. After this step is completed, all components are reset, and a material grabbing and placing process is completed.

[0047] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0048] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A workpiece picking and placing device for a CNC machining center, characterized in that: include: A machine tool cover, wherein a window is provided on the top of the machine tool cover and is opposite to the workpiece clamping position; A cross-shaped frame, the cross-shaped frame being arranged on the top of the machine tool housing by the window; A mobile drive assembly, the mobile drive assembly being arranged on a side of the cross-shaped frame facing the window; A lifting drive assembly, the lifting drive assembly facing the window and drivingly connected to the moving assembly; A lifting arm, wherein the lifting arm is drivingly connected to the lifting drive assembly; A rotary drive assembly, the rotary drive assembly being disposed on the back of the lifting arm; The turntable is arranged on the front of the lifting arm and is driven by the rotary drive assembly. The turntable is provided with a first mechanical gripper and a second mechanical gripper for grabbing or placing the workpiece, a visual inspection assembly for detecting the size of the workpiece, and an air blowing assembly for blowing chips from the workpiece in a circular array around its center.

2. The workpiece picking and placing device for a CNC machining center according to claim 1, characterized in that: The mobile drive component is a ball screw module or a rodless cylinder.

3. The workpiece picking and placing device for a CNC machining center according to claim 1, characterized in that: The lifting drive assembly is one of an electric push rod, a pneumatic push rod or a hydraulic push rod.

4. The workpiece picking and placing device for a CNC machining center according to claim 1, characterized in that: The rotary drive assembly includes a first drive motor whose output shaft is connected to a reducer. The reducer and the first drive motor are both arranged on the back of the lifting arm, and the drive shaft of the reducer passes through the lifting arm and is connected to the turntable.

5. The workpiece picking and placing device for a CNC machining center according to claim 1, characterized in that: The first mechanical gripper includes two vertical plates arranged in parallel on the front of the turntable, a screw rod rotatably arranged between the two vertical plates, and a second drive motor arranged on the inner side of one of the vertical plates, the screw rod has two threaded parts with opposite threads, and the two threaded parts are respectively provided with screw nuts, and the bottoms of the two screw nuts are respectively provided with electromagnets, the output shaft of the second drive motor passes through the vertical plate and is installed with a first pulley, the screw rod passes through the vertical plate on the same side as the second drive motor and is installed with a second pulley, and the first pulley and the second pulley are connected by a transmission belt.

6. The workpiece picking and placing device for a CNC machining center according to claim 5, characterized in that: The structure of the second mechanical gripper is consistent with that of the first mechanical gripper.

7. The workpiece picking and placing device for a CNC machining center according to claim 1, characterized in that: The visual detection component includes a visual detection camera and an annular light source. The visual detection camera is fixed on a turntable, and the annular light source is sleeved on the outer periphery of the visual detection camera.

8. The workpiece picking and placing device for a CNC machining center according to claim 1, characterized in that: The air blowing assembly comprises an air blowing pump and a trumpet-shaped air blowing tube. The air blowing pump is fixed on the turntable, and the trumpet-shaped air blowing tube is connected to the air blowing port of the air blowing pump.

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