Error-proof detection structure for machining center

Abstract

The utility model relates to the technical field of auxiliary detection equipment for machining centers, in particular to an error-proofing detection structure for a machining center, which comprises a bottom plate. The at least one detection assembly is installed on the bottom plate, the upper end of the detection assembly is provided with a detection plane, the detection plane is used for abutting against the lower surface of a workpiece, the detection assembly is provided with an air outlet hole, and when the lower surface of the workpiece abuts against the detection plane, the air outlet hole is blocked. The air outlet hole is further connected with a back pressure detection assembly. The supporting assembly is mounted on the bottom plate and is used for supporting a workpiece; the clamping assembly is installed on the bottom plate, located on the side wall of the detection assembly and used for clamping a workpiece. The device is beneficial to quickly detecting whether the workpiece to be processed is placed at a proper position.

Description

TECHNICAL FIELD

[0001] The utility model relates to processing center auxiliary detection equipment technical field especially a kind of mistake-proof detection structure for on processing center. BACKGROUND

[0002] Machining mistake-proof detection structure is mainly used to prevent the workpiece to be processed from being placed in wrong position, and the mistake-proof detection structure can monitor various parameters in the machining process in real time, such as size, shape, position, etc., so as to discover and correct machining errors in time and avoid waste caused by machining failure.

[0003] Common machining mistake-proof detection structure includes mistake-proof detection device based on machine vision, such as high-resolution camera and advanced image processing algorithm and sensor, length detection device, fixture mistake-proof device, etc.For workpieces with rust-proof oil on the surface or stains adhered to the surface, the rust-proof oil or oil stains have a certain glossiness, which can form a reflection on the surface of the workpiece. This reflection can interfere with the imaging effect of the visual detection equipment, causing image blur or light spots, affecting the accuracy of detection. Meanwhile, optical sensors (such as photoelectric sensors) rely on the reflection and refraction of light to detect the position, size, etc. of the workpiece. The reflection and uneven thickness of the oil film of the rust-proof oil or oil stains can cause unstable light signals received by the sensor, resulting in false judgment. Capacitive sensors judge the shape and position of the workpiece by detecting the capacitance change of the workpiece surface. The dielectric constant of the rust-proof oil or oil stains is different from that of the metal workpiece, which can form an insulating layer on the surface of the workpiece, affecting the detection accuracy of the capacitive sensor. Contact sensors (such as probe sensors) may adhere to the rust-proof oil when detecting workpieces coated with rust-proof oil, causing the sensor to fail to move normally or contact the surface of the workpiece. This further leads to false judgment when detecting the workpiece, reducing the machining efficiency of the workpiece.

[0004] Therefore, the technical personnel in the art are committed to developing a mistake-proof detection structure for processing center, which is beneficial to quickly detecting whether the workpiece to be processed is placed in the appropriate position. UTILITY MODEL CONTENT

[0005] The technical problem to be solved by the utility model is to provide a mistake-proof detection structure for processing center, which is beneficial to quickly detecting whether the workpiece to be processed is placed in the appropriate position.

[0006] The technical solution of the utility model to solve the above technical problem is as follows:

[0007] A mistake-proof detection structure for processing center, comprising

[0008] a bottom plate;

[0009] A detection assembly is arranged on the bottom plate, and an upper end of the detection assembly is provided with a detection plane for abutting against a lower surface of the workpiece, and an air outlet hole is arranged on the detection assembly and is blocked when the lower surface of the workpiece abuts against the detection plane, and the air outlet hole is connected with a back pressure detection assembly;

[0010] A support assembly is arranged on the bottom plate and used for supporting the workpiece.

[0011] A clamping assembly is arranged on the bottom plate and located at a side wall of the detection assembly and used for clamping the workpiece.

[0012] The beneficial effects of the above scheme are that the air outlet hole on the detection assembly is connected with the back pressure detection assembly, and the blocking condition of the air outlet hole when the lower surface of the workpiece abuts against the detection plane can be used to intuitively and accurately determine whether the workpiece is placed at a correct position, and the detection method based on air pressure change is less susceptible to interference of impurities such as rust-proof oil and stains on the surface of the workpiece, thereby significantly improving the detection accuracy and effectively avoiding processing errors caused by incorrect placement of the workpiece.

[0013] The back pressure of the back pressure detection assembly can be used to determine the flatness of the lower surface of the workpiece in contact with the detection plane, thereby improving the workpiece quality detection efficiency and not occupying too much processing time, and thus the overall processing efficiency of the machining center is effectively improved.

[0014] On the basis of the above technical scheme, the utility model further can make improvement as follows.

[0015] Further, the detection assembly comprises a detection support column, an upper end of the detection support column is conical, a detection piece is further arranged on the detection support column, the detection plane is located at an upper end of the detection piece, and the air outlet hole is arranged at a center of the detection piece and extends into the detection support column.

[0016] The beneficial effects of the above further scheme are that the detection plane is arranged at the upper end of the detection piece, and the air outlet hole is located at the center of the detection piece and extends into the detection support column, so that the functions of the detection assembly are more concentrated, the air path is more simple, and the overall performance and reliability of the detection assembly are improved.

[0017] Further, the back pressure detection assembly comprises a back pressure cavity arranged in the bottom plate, the back pressure cavity is communicated with the air outlet hole, the back pressure cavity is connected with a gas supply device, a gas pressure sensor is further arranged in the back pressure cavity, and the gas pressure sensor is electrically connected with a control device.

[0018] The beneficial effect of the further scheme is that the gas pressure sensor is used to detect the pressure of the gas in the back pressure cavity to determine whether the workpiece is placed in a proper position, the gas pressure sensor is electrically connected with the control device, the detection result can be quickly fed back, automation control is facilitated, and the intelligent level of the detection system is improved.

[0019] Further, the support assembly comprises support columns, and the support columns are respectively installed on the bottom plate through connecting bolts.

[0020] The beneficial effect of the further scheme is that the support columns are fixed through bolts, the connection is firm, the workpiece can be stably supported, the stability of the workpiece during machining is ensured, and machining errors caused by workpiece shaking are avoided.

[0021] Further, the clamping assembly comprises a clamping base, a clamping arm and a telescopic assembly, the clamping base is installed on the bottom plate, the telescopic assembly and a support arm are installed on the clamping base, the support arm is hingedly connected with the middle part of the clamping arm, one end of the clamping arm is hingedly connected with the end part of the telescopic assembly, the other end of the clamping arm is located on the upper side of the detection assembly, and the telescopic assembly is elongated to make the clamping arm rotate around the support arm to clamp the workpiece.

[0022] The beneficial effect of the further scheme is that the clamping assembly adopts the combined structure of the clamping base, the clamping arm and the telescopic assembly, the clamping arm is rotated around the support arm through the elongation of the telescopic assembly, the clamping of the workpiece is realized, the workpiece can be quickly and accurately clamped, and the clamping efficiency and reliability are improved.

[0023] Further, a plurality of pressure balance detection assemblies are installed on the bottom plate.

[0024] The beneficial effect of the further scheme is that the plurality of pressure balance detection assemblies are installed on the bottom plate, the pressure distribution of the workpiece on the bottom plate during placement can be monitored in real time, the balance of the workpiece placement and the uniformity of the workpiece quality distribution are ensured.

[0025] Further, the pressure balance detection assembly comprises a detection column and a thimble, the detection column is installed on the bottom plate, the detection column has a sliding hole, the thimble is arranged in the sliding hole, a pressure sensor is further arranged on the lower side of the thimble, the pressure sensor is located in the detection column, and the pressure sensor is electrically connected with the control device.

[0026] The beneficial effect of the further scheme is that the pressure sensor is located in the detection column and electrically connected with the control device, the pressure of the workpiece on the bottom plate can be accurately measured, the pressure data can be fed back in real time, and the detection accuracy is improved.

[0027] Further, the top pin is further provided with a support plate, and the top pin is provided with a spring, and the two ends of the spring are respectively in abutment with the lower side of the support plate and the bottom plate.

[0028] The beneficial effect of the further scheme is that the top pin is provided with a spring, and the two ends of the spring are respectively in abutment with the support plate and the bottom plate, so that a certain elastic supporting force can be applied to the top pin, a buffering effect is achieved, and damage to the pressure sensor caused by excessive force acting on the pressure sensor during processing is avoided.

[0029] Further, the bottom plate is provided with a liquid discharge port.

[0030] The beneficial effect of the further scheme is that the liquid discharge port is arranged on the bottom plate, so that the cooling liquid on the bottom plate can be discharged in time.

[0031] Further, the bottom plate is further provided with a lifting lug at the edge.

[0032] The beneficial effect of the further scheme is that the lifting lug is beneficial to the overall hoisting of the bottom plate. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a specific embodiment of the utility model for the error-proof detection structure on the machining center schematic view;

[0034] Figure 2 It is a specific embodiment of the utility model for the error-proof detection structure on the machining center schematic view;

[0035] Figure 3 It is a specific embodiment of the utility model for the error-proof detection structure on the machining center schematic view.

[0036] In the drawings, the component list represented by each reference numeral is as follows:

[0037] 1, bottom plate;2, detection assembly;3, detection plane;4, gas outlet hole;5, back pressure detection assembly;6, support assembly;7, clamping assembly;8, detection column;9, detection piece;10, back pressure cavity;11, gas supply device;12, gas pressure sensor;13, support column;14, clamping base;15, clamping arm;16, telescopic assembly;17, support arm;18, pressure balance detection assembly;19, top pin;20, pressure sensor;21, support plate;22, spring;23, liquid discharge port;24, lifting lug;25, machining assembly;26, detection column. DETAILED DESCRIPTION

[0038] The principles and characteristics of the present application are described below in conjunction with the drawings, and the examples are only used to explain the present application and are not used to limit the scope of the present application.

[0039] In the description of the present application, it is to be understood by the terms "center", "length", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the system or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0040] In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0041] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] As shown in Figure 1 , Figure 2 and Figure 3 , a mistake-proof detection structure for machining center, comprising

[0043] A bottom plate 1, which is rectangular and can be made of die steel, is provided with a drain port 23 for draining the cooling liquid sprayed during machining of the workpiece by the machining assembly 25. In order to facilitate the overall lifting of the bottom plate 1, lifting lugs 24 are installed at the edges of the bottom plate 1.

[0044] At least one detection assembly 2 is installed on the bottom plate 1. In this embodiment, three detection assemblies 2 are installed, and the three detection assemblies 2 are respectively located at the three vertices of an equilateral triangle. The detection assembly 2 has a detection plane 3 at the upper end, which is used to abut against the lower surface of the workpiece. The detection assembly 2 is provided with an air outlet hole 4, which is blocked when the lower surface of the workpiece abuts against the detection plane 3. The air outlet hole 4 is also connected with a back pressure detection assembly 5, which is used to detect the gas pressure in the air outlet hole 4 when the air outlet hole 4 is blocked. A supporting assembly 6 is installed on the bottom plate 1 and used to support the workpiece. A clamping assembly 7 is installed on the bottom plate 1 and located on the side wall of the detection assembly 2, and used to clamp the workpiece.

[0045] The utility model discloses, through the gas hole 4 on detection component 2 with back pressure detection component 5 links to each other, utilize the occlusion of gas hole 4 when workpiece lower surface and detection plane 3 abut, can directly and accurately judge whether workpiece is placed in correct position, this detection mode based on the change of air pressure, compared with traditional optical or capacitance detection mode, the interference of workpiece surface rust preventive oil, stain and other impurities is not easy, thereby the accuracy of detection has been improved significantly, effectively avoid the processing failure caused by workpiece placement error.

[0046] As Figure 1 , Figure 2 As shown in some embodiments, detection component 2 includes detection support 8, and the lower end of detection support 8 is cylindrical, and the upper end is conical. Detection support 8 is further provided with detection piece 9, and the upper end surface of detection piece 9 is used for supporting workpieces. Detection plane 3 is located on the upper end of detection piece 9, and gas hole 4 is arranged at the center of detection piece 9 and extends into detection support 8 and is connected with back pressure detection component 5.

[0047] In the embodiment, back pressure detection component 5 includes back pressure cavity 10 arranged in bottom plate 1. Back pressure cavity 10 is communicated with gas hole 4. Back pressure cavity 10 is connected with gas supply device 11. Gas supply device 11 can adopt compressed air tank. Gas pressure sensor 12 is further installed in back pressure cavity 10. Gas pressure sensor 12 is electrically connected with control device (not shown in the figure).

[0048] When the lower end surface of the workpiece abuts against detection plane 3, the lower end surface of the workpiece will block gas hole 4, so that the compressed air provided by gas supply device 11 is blocked in back pressure cavity 10. The pressure of the gas in back pressure cavity 10 is detected by gas pressure sensor 12 to determine whether the workpiece blocks gas hole 4, and further determine whether the workpiece is placed in a proper position. If the workpiece is placed in a proper position, but the gas pressure sensor 12 detects that the gas pressure in the back pressure cavity 10 is small, it indicates that the gap between the detection plane 3 and the lower end surface of the workpiece is large, and it is further determined that the flatness of the lower end surface of the workpiece is poor.

[0049] Support component 6 includes support column 13. A plurality of support columns 13 are respectively installed on bottom plate 1 by connecting bolts for supporting workpieces. Some of the support columns 13 are made of hard rubber, and the other support columns 13 are made of metal. The upper end of the metal support column 13 is provided with a support ball.

[0050] As Figure 1 , Figure 2As shown, in another embodiment, the clamping assembly 7 includes a clamping base 14, a clamping arm 15, and a telescopic assembly 16. The clamping base 14 is mounted on the base plate 1. The telescopic assembly 16 and the support arm 17 are mounted on the clamping base 14. The support arm 17 is vertically arranged and one end of the support arm 17 is fixedly connected to the base plate 1. The other end of the support arm 17 is hinged to the middle of the clamping arm 15. One end of the clamping arm 15 is hinged to the end of the telescopic assembly 16. The telescopic assembly 16 can be a cylinder. The other end of the clamping arm 15 is located on the upper side of the detection assembly 2. The extension of the telescopic assembly 16 causes the clamping arm 15 to rotate around the support arm 17, so that the end of the clamping arm 15 is close to the detection plane 3 to clamp the workpiece and prevent the processing assembly 25 from moving when processing the workpiece.

[0051] like Figure 1 , Figure 3 As shown in this embodiment, multiple pressure equalization detection components 18 are also installed on the base plate 1. Specifically, the pressure equalization detection component 18 includes a detection column 26 and a ejector pin 19. The detection column 26 has a cylindrical lower end and a cylindrical upper end and is installed on the base plate 1. The detection column 26 has a sliding hole, and the ejector pin 19 passes through the sliding hole with clearance fit. The upper end of the ejector pin 19 is conical, and a pressure sensor 20 is also provided on the lower side of the ejector pin 19. The pressure sensor 20 is located inside the detection column 26 and is electrically connected to the control device. Multiple pressure sensors 20 are electrically connected to the control device respectively, which can accurately measure the pressure of different positions of the workpiece on the base plate 1, thereby determining the mass distribution of the workpiece and then determining the manufacturing quality of the previous process of the workpiece. At the same time, when the processing component 25 processes the workpiece, it provides real-time feedback of pressure data, which facilitates the processing component 25 to make real-time adjustments based on the feedback pressure data, thereby improving detection accuracy and processing accuracy.

[0052] A support plate 21 is also provided on the ejector pin 19. A spring 22 is sleeved on the ejector pin 19. The two ends of the spring 22 abut against the lower side of the support plate 21 and the base plate 1, respectively. The ejector pin 19 is sleeved with a spring 22, and the two ends of the spring 22 abut against the support plate 21 and the base plate 1, respectively. This can apply a certain elastic support force to the ejector pin 19, play a buffering role, and avoid excessive force on the pressure sensor 20 during processing, which could damage the pressure sensor 20.

[0053] In the description of the specification, the description using the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the particular feature, structure, material or characteristic following the term is included in at least one embodiment or example of the present application. The illustrative appearances of the above-mentioned terms in the specification do not necessarily refer to the same embodiment or example. Also, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Moreover, the terms "comprises", "comprising", "includes", "including", "contains", "containing" or the like are inclusive and are intended to mean that the contents, features, materials, or the like that are enumerated are contained in the application, but do not exclude the possibility that one or more other features, materials, or the like are also present.

[0054] The above description is merely illustrative of the application and is not to be taken in a limiting sense. Rather, the scope of the application disclosed herein is to be determined solely by the appended claims, along with the full range of equivalents to which such claims are entitled.

Claims

1. A mistake proofing detection structure for use on a machining center, characterized by: The utility model provides a workpiece detection device, including The bottom plate (1); Detection assembly (2), at least one detection assembly (2) is installed on the bottom plate (1), the detection assembly (2) upper end has detection plane (3), the detection plane (3) is used to be in contact with workpiece lower surface, the detection assembly (2) is provided with the air outlet (4) on the upper side, when workpiece lower surface is in contact with the detection plane (3), the air outlet (4) is blocked, the air outlet (4) is also connected with back pressure detection assembly (5); Support assembly (6), the support assembly (6) is installed on the bottom plate (1) and is used to support workpiece; Clamping assembly (7), the clamping assembly (7) is installed on the bottom plate (1) and is located the detection assembly (2) side wall and is used to clamp workpiece.

2. The mistake proofing detection structure for use on a machining center according to claim 1, characterized in that: The detection assembly (2) includes detection support (8), the detection support (8) upper end is tapered, the detection support (8) is also provided with detection piece (9) on the upper side, the detection plane (3) is located the upper end of detection piece (9), the air outlet (4) is arranged in the center of detection piece (9) and extends to the detection support (8) inside.

3. The mistake proofing detection structure for use on a machining center according to claim 1, characterized in that: The back pressure detection assembly (5) includes the back pressure cavity (10) that is arranged in the bottom plate (1), the back pressure cavity (10) is communicated with the air outlet (4), the back pressure cavity (10) is connected with gas supply device (11), and the back pressure cavity (10) is also installed with gas pressure sensor (12) inside, the gas pressure sensor (12) is electrically connected with control device.

4. The mistake proofing detection structure for use on a machining center according to claim 1, characterized in that: The support assembly (6) includes support column (13), a plurality of support column (13) is installed on the bottom plate (1) through connecting bolt respectively.

5. The mistake proofing detection structure for use on a machining center according to claim 1, characterized in that: The clamping assembly (7) includes clamping base (14), clamping arm (15) and telescopic assembly (16), the clamping base (14) is installed on the bottom plate (1), the clamping base (14) is installed with telescopic assembly (16) and support arm (17), the support arm (17) is hinged with the middle part of clamping arm (15), one end of clamping arm (15) is hinged with the end of telescopic assembly (16), the other end of clamping arm (15) is located the upper side of detection assembly (2), and the telescopic assembly (16) is elongated so that clamping arm (15) rotates around support arm (17) to clamp workpiece.

6. The mistake proofing detection structure for use on a machining center according to claim 3, characterized in that: A plurality of pressure equalization detection assemblies (18) are also installed on the bottom plate.

7. The mistake proofing detection structure for use on a machining center according to claim 6, wherein: The pressure equalization detection assembly (18) includes detection column (26) and thimble (19), the detection column (26) is installed on the bottom plate (1), the detection column (26) has sliding hole, the thimble (19) is arranged in the sliding hole, the thimble (19) lower side is also provided with pressure sensor (20), the pressure sensor (20) is located in the detection column (26), and the pressure sensor (20) is electrically connected with the control device.

8. The mistake proofing detection structure for use on a machining center according to claim 7, characterized in that: The thimble (19) is also provided with support plate (21), the thimble (19) is provided with spring (22), and the two ends of the spring (22) are respectively in contact with the lower side of the support plate (21) and the bottom plate (1).

9. The mistake proofing detection structure for use on a machining center according to claim 1, characterized in that: The bottom plate (1) is provided with a liquid discharge port (23).

10. The mistake proofing detection structure for use on a machining center according to claim 1, characterized in that: The bottom plate (1) is further provided with a lifting lug (24) at the edge.

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