Drilling device for automobile part machining

Abstract

The drilling device for automobile part machining comprises a base, a supporting rod, a top plate, a drilling mechanism and a stabilizing mechanism, the supporting rod is fixedly arranged on the base, the top plate is fixedly arranged at the top of the supporting rod, a sliding rail is arranged at the bottom of the top plate, and an operation table is arranged in the middle of the base; and then through the combination of laser measurement and image recognition technologies, high-precision drilling positioning is achieved, the drilling precision and stability can be effectively controlled and improved, the method adapts to various working condition changes, and high efficiency and safety in the production process are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts processing, in particular to a drilling device for automobile parts processing. Background Art

[0002] Auto parts are the various units that make up the whole car and a kind of product that serves the car. With the increasingly fierce competition in the auto parts processing market, the deep-rooted concept of environmental protection, and the continuous upgrading and application of technology, the international auto parts processing and parts industry has shown the following development characteristics in recent years: the trend of supporting auto parts processing systems and modular supply is in the ascendant; auto parts processing and procurement are globalized; and the speed of transfer of auto parts processing industry is accelerating.

[0003] When drilling holes in automobile parts, the prior art device cannot fix the automobile parts well, so that the automobile parts are prone to deviation during the drilling process, resulting in deviations during drilling, affecting work efficiency and work quality. Moreover, when deviation occurs, it cannot be adjusted in time, and the drill bit type used is single and has poor flexibility. Summary of the invention

[0004] The object of the present invention is to provide a drilling device for automobile parts processing to solve the problems raised in the above background technology.

[0005] The present invention is realized by the following technical scheme: a drilling device for automobile parts processing, comprising a base, a support rod, a top plate, a drilling mechanism and a stabilizing mechanism, wherein the base is fixedly provided with a support rod, the top plate is fixedly provided with a top of the support rod, a slide rail is provided at the bottom of the top plate, and an operating table is provided in the middle of the base;

[0006] The drilling mechanism comprises a linear motor, a first electric telescopic rod, a first rotary motor, a turntable, and different types of drill bits. The linear motor is slidably connected to the slide rail, a first rotary motor is fixedly provided at the output end of the linear motor, the first rotary motor is connected to a first gear through a rotating shaft, a second gear is provided inside the turntable, the first gear is meshed with the second gear, first electric telescopic rods are evenly provided around the bottom of the turntable, the output ends of the electric telescopic rods are all provided with second rotary motors, and different types of drill bits are respectively provided at the output ends of the second rotary motors;

[0007] The stabilizing mechanism comprises a second electric telescopic rod and a pressure plate. The second electric telescopic rod is fixed on both sides of the top, and the output ends of the second electric telescopic rod are fixedly connected to the pressure plate.

[0008] Specifically, the operating table is "concave".

[0009] Specifically, the different types of drill bits include round drill bits, conical drill bits, and slot drill bits.

[0010] Specifically, baffles are provided on both the front and rear sides of the operating table.

[0011] Specifically, a vacuum cleaner is provided on each of the baffles, an output end of the vacuum cleaner is connected to a vacuum tube, the other end of the vacuum tube is connected to a collection box, and the collection box is fixed on one side of the base.

[0012] Specifically, a groove is provided at the bottom of the operating table and connected to the top of the base, a collection cabinet is provided in the groove through a slide groove, a cabinet door of the collection cabinet is arranged on the base, and a handle is provided on the cabinet door.

[0013] Specifically, the top of the operating table and the bottom of the pressure plate are both provided with protective rubber.

[0014] Specifically, it also includes a control system, which includes a software module and a hardware module;

[0015] The hardware module includes a laser rangefinder, a high-definition camera, and a central control processor. The laser rangefinder and the high-definition camera are respectively arranged on the support rod. The laser rangefinder is used to obtain the three-dimensional position of the workpiece relative to the drill bit in real time. The high-definition camera is used to obtain the image of the workpiece. The central control processor is connected to the first electric telescopic rod, the first rotary motor, the second electric telescopic rod, and the second rotary motor signal.

[0016] The software module includes a hole position correction module for performing hole position correction before drilling.

[0017] Specifically, the process of the hole position correction module performing hole position correction before drilling is as follows:

[0018] First, use a laser rangefinder to measure the distance d between the drill bit and the hole to be drilled:

[0019]

[0020] Where c is the speed of light, and t is the time it takes for the laser to be emitted to the workpiece surface and return;

[0021] And through laser scanning, three-dimensional point cloud data P (x, y, z) is obtained to form a three-dimensional model; the generated point cloud data can be regarded as a set of coordinate point sets P i (x i ,y i ,z i ), the principal component analysis method is used to reconstruct the geometric shape of the workpiece. The goal of the principal component analysis method is to find the best fitting plane:

[0022]

[0023] Among them, Q is the best fitting plane value, μ is the average point of the point cloud data, n is the total number of point cloud data, and maximize means maximizing each point P i The sum of squared deviations from its mean μ;

[0024] Error calculation and compensation: Assuming the expected hole position is H target (x h ,t h ,z h ), and the actual hole position obtained by laser measurement is H actual (x a ,y a ,z a ), the error E can be expressed as:

[0025]

[0026] Determine the required compensation value C based on the error E:

[0027] C=kE

[0028] Where k is the compensation factor;

[0029] Second, the camera captures the image I(t) in real time, and the image gradient is used in the image processing process. To extract feature boundaries:

[0030]

[0031] in, Represents the partial derivative of the brightness change of the image in the x direction, Represents the partial derivative of the brightness change of the image in the y direction;

[0032] Then use the algorithm based on feature point detection to identify the key feature points F on the workpiece j :

[0033] F j = argmax{Strength(P i )|P i ∈I(t)}

[0034] Among them, F j represents the jth identified feature point, Strength(P i ) represents the feature point P i The strength score of the feature point P i The maximum value of the intensity score;

[0035] The laser measurement and image recognition results are recorded as L and V respectively, and fused:

[0036]

[0037] Among them, R represents the synthetic position feedback, and the control system adjusts the position of the drill bit in real time according to R, L represents the laser measurement result, and V represents the visual recognition result;

[0038] Third, generate the correction command based on the target hole position and the actual hole position:

[0039] Command=C target +C

[0040] Among them, Command represents the generated correction instruction function, C target Indicates the coordinates of the target hole position;

[0041] In dynamic environments, adjust measurement accuracy to respond to external changes:

[0042] σ′=σ+Δ

[0043] Among them, σ is the original measurement accuracy, σ′ is the adjusted measurement accuracy, and Δ is the adjustment caused by environmental changes;

[0044] Fourth, the corrected hole coordinates are fed back to the central control processor to perform precise drilling operations.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] The present invention provides a drilling device for automobile parts processing, which can well fix the automobile parts through a stabilizing mechanism, so that the automobile parts are not prone to deviation during the drilling process. When deviation occurs during drilling, the hole position correction module of the control system can timely adjust the drilling mechanism to improve work efficiency and work quality. The present invention also provides different types of drill bits to meet different operating requirements and has high flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0048] Figure 1 The present invention is a structural diagram of a drilling device for automobile parts processing provided by the present invention.

[0049] Figure 2 A schematic diagram of the meshing connection between the first gear and the second gear provided by the present invention.

[0050] Figure 3 This is a schematic diagram of the installation of the collection cabinet provided by the present invention.

[0051] In the figure, 1 is a base, 2 is a support rod, 3 is a top plate, 4 is an operating table, 5 is a slide rail, 6 is a linear motor, 7 is a first rotary motor, 8 is a first electric telescopic rod, 9 is a rotating shaft rod, 10 is a first gear, 11 is a second gear, 12 is a turntable, 13 is a second rotary motor, 14 is a drill bit, 15 is a second electric telescopic rod, 16 is a pressure plate, 17 is a baffle, 18 is a vacuum cleaner, 19 is a dust suction pipe, 20 is a collection box, 21 is a slide chute, 22 is a collection cabinet, 23 is a handle, 24 is a laser rangefinder, and 25 is a high-definition camera. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical scheme and advantages of the present invention more obvious, the exemplary embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments of the present invention, and it should be understood that the present invention is not limited to the exemplary embodiments described herein. Based on the embodiments of the present invention described in the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the protection scope of the present invention.

[0053] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0054] It should be understood that the present invention can be implemented in different forms and should not be interpreted as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to make the disclosure thorough and complete and to fully convey the scope of the present invention to those skilled in the art.

[0055] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present invention. When used herein, the singular forms "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "consisting of" and / or "comprising", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0056] In order to fully understand the present invention, a detailed structure will be proposed in the following description to illustrate the technical solution proposed by the present invention. The optional embodiments of the present invention are described in detail as follows, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0057] See also Figure 1 and Figure 2 A drilling device for automobile parts processing, comprising a base 1, a support rod 2, a top plate 3, a drilling mechanism and a stabilizing mechanism, wherein the base 1 is fixedly provided with a support rod 2, the top plate 3 is fixedly provided on the top of the support rod 2, a slide rail 5 is provided at the bottom of the top plate 3, and an operating table 4 is provided in the middle of the base 1;

[0058] The drilling mechanism includes a linear motor 6, a first electric telescopic rod 8, a first rotary motor 7, a turntable 12, and different types of drill bits 14. The linear motor 6 is slidably connected to the slide rail 5. The output end of the linear motor 6 is fixedly provided with a first rotary motor 7. The first rotary motor 7 is connected to a first gear 10 through a rotating shaft rod 9. A second gear 11 is provided inside the turntable 12. The first gear 10 is meshed with the second gear 11. The first electric telescopic rod 8 is evenly provided around the bottom of the turntable 12. The output ends of the electric telescopic rods are all provided with second rotary motors 13. The output ends of the second rotary motors 13 are respectively provided with different types of drill bits 14.

[0059] The stabilizing mechanism includes a second electric telescopic rod 15 and a pressure plate 16 . The second electric telescopic rod 15 is fixed on both sides of the top, and the output ends of the second electric telescopic rod 15 are fixedly connected to the pressure plate 16 .

[0060] Exemplarily, the present invention provides a drilling device for automobile parts processing, and its working principle is as follows: first, place the workpiece to be drilled on the operating table 4, and then start the second electric telescopic rod 15 to move the pressure plate 16 downward until the pressure plate 16 is tightly fitted with the component, so that the workpiece is fixed to prevent the workpiece from moving during drilling, and then identify the center position of the target drilling hole through the image, and establish a three-dimensional rectangular coordinate system with the center position of the target drilling hole as the center of the circle, select the required drill bit 14 type, and vertically project the center position of the drill bit 14 into the three-dimensional rectangular coordinate system, and start the first rotating motor 7, the first gear 10 starts to rotate, thereby driving the second gear 11 to start rotating, so that the rotating disk 12 is rotated so that the selected center position of the drill bit 14 is projected on the y-axis of the three-dimensional rectangular coordinate system, and the laser rangefinder 24 is used to measure The distance between the center position of the drill bit 14 and the center of the circle is calculated, and then fed back to the central control processor to control the linear motor 6 to move a corresponding distance on the slide rail 5, and then repeat the last operation, and calculate the distance between the center position of the drill bit 14 and the center of the circle again. The central control processor fine-tunes the distance moved by the linear motor 6 until the distance between the center position of the drill bit 14 and the center of the circle on the y-axis is zero. At this time, the center position of the drill bit 14 is directly above the center position of the target drilling hole, and then calculates the distance between the center position of the drill bit 14 and the center of the circle on the z-axis, and then feeds it back to the central control processor to control the first electric telescopic rod 8 to move a corresponding distance until the center position of the drill bit 14 coincides with the center of the circle. The central control processor starts the second rotary motor 13 to start the drilling operation; when there are multiple drilling positions, multiple drilling operations are completed from left to right in sequence according to the above-mentioned operating steps.

[0061] Specifically, the operating table 4 is "concave".

[0062] Specifically, the different types of drill bits 14 include round drill bits, cone drill bits, and slot drill bits.

[0063] Exemplarily, different types of drill bits 14 are provided to meet different operational requirements.

[0064] Specifically, baffles 17 are provided on both the front and rear sides of the operating platform 4 .

[0065] For example, the baffle 17 can prevent the debris generated during drilling from spreading everywhere, polluting the environment and threatening human life.

[0066] Specifically, a vacuum cleaner 18 is provided on each of the baffles 17 , an output end of the vacuum cleaner 18 is connected to a vacuum tube 19 , and the other end of the vacuum tube 19 is connected to a collection box 20 , and the collection box 20 is fixed on one side of the base 1 .

[0067] Exemplarily, the debris generated during drilling is collected by a dust collector 18 .

[0068] For details, see Figure 3 The bottom of the operating table 4 is connected to the top of the base 1 and is provided with a groove, and a collection cabinet 22 is provided in the groove through a slide groove 21. The cabinet door of the collection cabinet 22 is set on the base 1, and a handle 23 is provided on the cabinet door.

[0069] Exemplarily, the debris not collected by the vacuum cleaner 18 falls into the collection cabinet 22 , and after the drilling operation is completed, the collected debris is processed through the handle 23 .

[0070] Specifically, the top of the operating table 4 and the bottom of the pressure plate 16 are both provided with protective rubber.

[0071] Exemplarily, the protective rubber can prevent the surface of the workpiece from being damaged due to friction caused by direct contact when fixing the workpiece to be drilled.

[0072] Specifically, it also includes a control system, which includes a software module and a hardware module;

[0073] The hardware module includes a laser rangefinder 24, a high-definition camera 25, and a central control processor. The laser rangefinder 24 and the high-definition camera 25 are respectively arranged on the support rod 2. The laser rangefinder 24 is used to obtain the three-dimensional position of the workpiece relative to the drill bit 14 in real time. The high-definition camera 25 is used to obtain the image of the workpiece. The central control processor is connected to the first electric telescopic rod 8, the first rotary motor 7, the second electric telescopic rod 15, and the second rotary motor 13 by signal.

[0074] The software module includes a hole position correction module for performing hole position correction before drilling.

[0075] For example, the entire drilling process is controlled by a control system to improve the degree of automation and accuracy of the machine.

[0076] Specifically, the process of the hole position correction module performing hole position correction before drilling is as follows:

[0077] First, the distance d between the drill bit 14 and the hole to be drilled is measured by the laser rangefinder 24:

[0078]

[0079] Where c is the speed of light, and t is the time it takes for the laser to be emitted to the workpiece surface and return;

[0080] And through laser scanning, three-dimensional point cloud data P (x, y, z) is obtained to form a three-dimensional model; the generated point cloud data can be regarded as a set of coordinate point sets P i (x i ,y i ,zi ), the principal component analysis method is used to reconstruct the geometric shape of the workpiece. The goal of the principal component analysis method is to find the best fitting plane:

[0081]

[0082] Among them, Q is the best fitting plane value, μ is the average point of the point cloud data, n is the total number of point cloud data, and maximize means maximizing each point P i The sum of squared deviations from its mean μ;

[0083] Error calculation and compensation, assuming the expected hole position is H target (x h ,t h ,z h ), and the actual hole position obtained by laser measurement is H actual (x a ,y a ,z a ), the error E can be expressed as:

[0084]

[0085] Determine the required compensation value C based on the error E:

[0086] C=kE

[0087] Where k is the compensation factor;

[0088] Second, the camera captures the image I(t) in real time, and the image gradient is used in the image processing process. To extract feature boundaries:

[0089]

[0090] in, Represents the partial derivative of the brightness change of the image in the x direction, Represents the partial derivative of the brightness change of the image in the y direction;

[0091] Then use the algorithm based on feature point detection to identify the key feature points F on the workpiece j :

[0092] F j =argmax{Strength(P i )|P i ∈I(t)}

[0093] Among them, F j represents the jth identified feature point, Strength(P i ) represents the feature point P iThe strength score of the feature point P i The maximum value of the intensity score;

[0094] The laser measurement and image recognition results are recorded as L and V respectively, and fused:

[0095]

[0096] Wherein, R represents the synthesized position feedback, and the control system adjusts the position of the drill bit 14 in real time according to R, L represents the laser measurement result, and V represents the visual recognition result;

[0097] Third, generate the correction command based on the target hole position and the actual hole position:

[0098] Command=C target +C

[0099] Among them, Command represents the generated correction instruction function, C target Indicates the coordinates of the target hole position;

[0100] In dynamic environments, adjust measurement accuracy to respond to external changes:

[0101] σ′=σ+Δ

[0102] Among them, σ is the original measurement accuracy, σ′ is the adjusted measurement accuracy, and Δ is the adjustment caused by environmental changes;

[0103] Fourth, the corrected hole coordinates are fed back to the central control processor to perform precise drilling operations.

[0104] For example, through the combination of laser measurement and image recognition technology, high-precision drilling positioning can be achieved, which can effectively control and improve the accuracy and stability of drilling, adapt to various working conditions, and ensure efficiency and safety in the production process.

[0105] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A drilling device for automobile parts processing, It is characterized in that It includes a base, a support rod, a top plate, a drilling mechanism and a stabilizing mechanism. The base is fixed with a support rod, the top plate is fixed with a top of the support rod, a slide rail is provided at the bottom of the top plate, and an operating table is provided in the middle of the base; The drilling mechanism comprises a linear motor, a first electric telescopic rod, a first rotary motor, a turntable, and different types of drill bits. The linear motor is slidably connected to the slide rail, a first rotary motor is fixedly provided at the output end of the linear motor, the first rotary motor is connected to a first gear through a rotating shaft, a second gear is provided inside the turntable, the first gear is meshed with the second gear, first electric telescopic rods are evenly provided around the bottom of the turntable, the output ends of the first electric telescopic rods are each provided with a second rotary motor, and different types of drill bits are respectively provided at the output ends of the second rotary motor; The stabilizing mechanism comprises a second electric telescopic rod and a pressure plate. The second electric telescopic rod is fixed on both sides of the top, and the output ends of the second electric telescopic rod are fixedly connected to the pressure plate.

2. A drilling device for automobile parts processing according to claim 1, It is characterized in that The operating table is "concave".

3. A drilling device for automobile parts processing according to claim 1, It is characterized in that The different types of drill bits include round drill bits, conical drill bits, and slot drill bits.

4. A drilling device for automobile parts processing according to claim 3, It is characterized in that Baffles are arranged on both the front and rear sides of the operating table.

5. A drilling device for automobile parts processing according to claim 4, It is characterized in that The baffles are each provided with a vacuum cleaner, the output end of the vacuum cleaner is connected to a vacuum tube, the other end of the vacuum tube is connected to a collection box, and the collection box is fixed on one side of the base.

6. A drilling device for automobile parts processing according to claim 5, It is characterized in that The bottom of the operating table is connected to the top of the base and is provided with a groove, a collection cabinet is provided in the groove through a slide groove, a cabinet door of the collection cabinet is arranged on the base, and a handle is provided on the cabinet door.

7. A drilling device for automobile parts processing according to claim 6, It is characterized in that The top of the operating table and the bottom of the pressure plate are both provided with protective rubber.

8. A drilling device for automobile parts processing according to claim 7, It is characterized in that Also included is a control system, the control system including a software module and a hardware module; The hardware module includes a laser rangefinder, a high-definition camera, and a central control processor. The laser rangefinder and the high-definition camera are respectively arranged on the support rod. The laser rangefinder is used to obtain the three-dimensional position of the workpiece relative to the drill bit in real time. The high-definition camera is used to obtain the image of the workpiece. The central control processor is connected to the first electric telescopic rod, the first rotary motor, the second electric telescopic rod, and the second rotary motor signal. The software module includes a hole position correction module for performing hole position correction before drilling.

9. A drilling device for automobile parts processing according to claim 8, It is characterized in that The process of the hole position correction module performing hole position correction before drilling is as follows: First, use a laser rangefinder to measure the distance d between the drill bit and the hole to be drilled: Where c is the speed of light, and t is the time it takes for the laser to be emitted to the workpiece surface and return; And through laser scanning, three-dimensional point cloud data P (x, y, z) is obtained to form a three-dimensional model; the generated point cloud data can be regarded as a set of coordinate point sets P i (x i ,y i ,z i ), the principal component analysis method is used to reconstruct the geometric shape of the workpiece. The goal of the principal component analysis method is to find the best fitting plane: Among them, Q is the best fitting plane value, μ is the average point of the point cloud data, n is the total number of point cloud data, and maximize means maximizing each point P i The sum of squared deviations from its mean μ; Error calculation and compensation: Assuming the expected hole position is H target (x h ,y h ,z h ), and the actual hole position obtained by laser measurement is H actual (x a ,y a ,z a ), the error E can be expressed as: Determine the required compensation value C based on the error E: C=kE Where k is the compensation factor; Second, the camera captures the image I(t) in real time, and the image gradient is used in the image processing process. To extract feature boundaries: in, Represents the partial derivative of the brightness change of the image in the x direction, Represents the partial derivative of the brightness change of the image in the y direction; Then use the algorithm based on feature point detection to identify the key feature points F on the workpiece j : F j =argmax{Strength(P i )|P i ∈I(t)} Among them, F j represents the jth identified feature point, Strength(P i ) represents the feature point P i The strength score of the feature point P i The maximum value of the intensity score; The laser measurement and image recognition results are recorded as L and V respectively, and fused: Among them, R represents the synthetic position feedback, and the control system adjusts the position of the drill bit in real time according to R, L represents the laser measurement result, and V represents the visual recognition result; Third, generate the correction command based on the target hole position and the actual hole position: Command=C target +C Among them, Command represents the generated correction instruction function, C target Indicates the coordinates of the target hole position; In dynamic environments, adjust measurement accuracy to respond to external changes: σ′=σ+Δ Among them, σ is the original measurement accuracy, σ′ is the adjusted measurement accuracy, and Δ is the adjustment caused by environmental changes; Fourth, the corrected hole coordinates are fed back to the central control processor to perform precise drilling operations.

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