Facial difference detection device

Abstract

The application discloses a surface difference detection equipment, which comprises a base (1), two parallel arranged guide sliding rails (2) arranged on the top surface of the base (1), a detection contact group fixing plate (3) and a plurality of detection contact assemblies (4) installed on the detection contact group fixing plate (3). Each detection contact assembly (4) is provided with a displacement sensor (5), and a strip-shaped transmitter (6) is fixedly arranged on the top surface of the base (1) and connected with a smart terminal. The surface difference value and the extreme difference value of the part can be quickly and accurately detected, and the detection efficiency and the detection quality are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of detection equipment, in particular a kind of face difference detection equipment. BACKGROUND

[0002] In recent years, domestic manufacturing industry is booming, and the public aesthetic is continuously improved, and the modeling of various products is also more and more complex and changeable, and the assembly requirement of the total machine is also rising with the water. For some large main machine, such as car, large household appliance, etc., the face difference requirement of installation surface is very high, and the key installation part also meets the extreme difference requirement, so as to cooperate with the installation of other parts.

[0003] In the automobile industry, the current detection method of part face difference is to fix the measured part on the gauge, and then manually use ruler, plug gauge, face difference meter and other measuring tools to detect the detection points on the part. This detection method needs to detect and record the deviation value of each point manually, and finally statistics data is obtained to determine which point is qualified, which is time-consuming and laborious. Moreover, the extreme difference detection is not intuitive, and the difference value between each point in the specified area needs to be calculated manually to obtain the extreme difference value, and the detection efficiency is low. SUMMARY

[0004] The purpose of the present application is to provide a kind of face difference detection equipment to solve the technical problems in the prior art, which can quickly and accurately detect the face difference value and extreme difference value of the part, and improve the detection efficiency and detection quality.

[0005] The present application provides a kind of face difference detection equipment, including base, the top surface of the base is equipped with two parallelly arranged guide sliding rails, further including detection contact group fixed plate, the detection contact group fixed plate is slidably connected with two guide sliding rails, a plurality of detection contact head assemblies are installed on the detection contact group fixed plate, a displacement sensor is arranged on each detection contact head assembly, a strip-shaped transmitter is fixedly arranged on the top surface of the base, and the strip-shaped transmitter is connected with intelligent terminal.

[0006] In the foregoing face difference detection equipment, preferably, the detection contact group fixed plate is composed of a first plate body and a second plate body, the first plate body is horizontally arranged, the second plate body is vertically arranged, one end of the first plate body is fixedly connected with the bottom of the second plate body, and the two are in "L" shape, two guide sliding blocks are fixedly arranged on the bottom surface of the first plate body, and the two guide sliding blocks are slidably installed on the two guide sliding rails respectively.

[0007] In the foregoing face difference detection equipment, preferably, a driving cylinder is arranged on the base, and the telescopic end of the driving cylinder is connected with one of the guide sliding blocks.

[0008] Preferably, in the aforementioned surface difference detection device, all of the detection contact assembly structures are equal, the detection contact assembly comprises a detection contact, a contact fixed plate, a connecting rod fixed block, a contact connecting rod, a buffer pad plate and a nitrogen spring, the second plate body is provided with a contact assembly mounting hole, the number of the connecting rod fixed blocks is two, the two connecting rod fixed blocks are fixed on the second plate body, one of the contact connecting rods is inserted and connected to each of the two connecting rod fixed blocks, one end of the contact connecting rod is fixedly connected to one side of the contact fixed plate, the detection contact is fixedly installed on the other side of the contact fixed plate, the other end of the contact connecting rod protrudes from the connecting rod fixed block and is fixedly connected to one side of the buffer pad plate, the other side of the buffer pad plate is in abutment with the nitrogen spring.

[0009] Preferably, in the aforementioned surface difference detection device, the device further comprises a stop buffer plate, the stop buffer plate is fixedly connected to the detection contact fixed plate through a plurality of connecting rods, the stop buffer plate and the contact fixed plate are arranged in parallel with the second plate body, and the stop buffer plate and the contact fixed plate are located on opposite sides of the second plate body, and the nitrogen spring is installed on the stop buffer plate.

[0010] Preferably, in the aforementioned surface difference detection device, the buffer pad plate is provided with a height adjusting pin on the side facing the stop buffer plate, and the stop buffer plate is provided with a limiting screw arranged opposite to the height adjusting pin.

[0011] Preferably, in the aforementioned surface difference detection device, the contact fixed plate is fixedly provided with a spring support rod on the side facing the second plate body, a terminal compression spring is sleeved on the spring support rod, and the second plate body is provided with a support rod avoiding hole opposite to the spring support rod.

[0012] Preferably, in the aforementioned surface difference detection device, the intelligent terminal is a PC computer, a notebook computer, an IPAD or a smart phone.

[0013] Compared with the prior art, the application comprises a base and a detection contact group fixed plate, the top surface of the base is provided with two parallel arranged guide sliding rails, the detection contact group fixed plate is in sliding connection with the two guide sliding rails, the detection contact group fixed plate is installed with a plurality of detection contact assemblies, each detection contact assembly is provided with a displacement sensor, and the top surface of the base is fixedly provided with a strip-shaped transmitter, and the strip-shaped transmitter is connected with an intelligent terminal. The application can calculate the surface difference and the extreme difference of the part by setting a plurality of detection contact assemblies and measuring the moving distance of the displacement sensor on the detection contact assembly through the strip-shaped transmitter, and the application has the advantages of simple structure and convenient operation, can improve the detection efficiency of the part, and effectively improves the detection precision. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is an axonometric view of the present application;

[0015] Figure 2 is a structural schematic view of the present application and a part to be detected;

[0016] Figure 3 is an axonometric view of the detection contact assembly;

[0017] Figure 4 is a mating sectional view of the contact connecting rod and the connecting rod fixing block;

[0018] Figure 5 is a mating sectional view of the spring supporting rod and the terminal pressing spring;

[0019] Figure 6 is a connecting structure sectional view of the stop buffer plate and the second plate body 8;

[0020] Figure 7 is a schematic view of a mounting structure of the detection contact;

[0021] Figure 8 is a detection principle diagram.

[0022] BRIEF DESCRIPTION OF DRAWINGS: base 1, guide slide rail 2, detection contact group fixing plate 3, detection contact assembly 4, displacement sensor 5, strip-shaped transmitter 6, first plate body 7, second plate body 8, guide slide block 9, driving cylinder 10, detection contact 11, contact fixing plate 12, connecting rod fixing block 13, contact connecting rod 14, buffer pad plate 15, nitrogen spring 16, stop buffer plate 17, connecting rod 18, limiting screw 19, spring supporting rod 20, terminal pressing spring 21, supporting rod avoiding hole 22, height adjusting pin 23, buffer 24, buffer mounting bracket 25, part to be detected 26, detection point 27, counter sunk nut 28, threaded hole 29, stepped hole 30, stop pin 31, mounting plate 32, first waist-shaped hole 33, second waist-shaped hole 34, bolt assembly 35. DETAILED DESCRIPTION

[0023] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the present application, and cannot be interpreted as a limitation of the present application.

[0024] Embodiments of the present application: as Figures 1-7As shown, a surface difference detection device comprises a base 1 and a detection contact group fixing plate 3, the base 1 is a flat plate, the base 1 is horizontally arranged, two parallel guide sliding rails 2 are arranged on the top surface of the base 1, the two guide sliding rails 2 are arranged along the length direction of the base 1, the detection contact group fixing plate 3 is slidingly connected with the two guide sliding rails 2, a plurality of detection contact assemblies 4 are installed on the detection contact group fixing plate 3, a displacement sensor 5 is arranged on each detection contact assembly 4, a strip-shaped transmitter 6 is fixedly arranged on the top surface of the base 1, the strip-shaped transmitter 6 is connected with a smart terminal, and the strip-shaped transmitter 6 and the smart terminal can be connected in a wired manner or in a wireless manner.

[0025] In work, the base 1 is fixed on a detection support, the detection support is prior art, and therefore is not shown in the figure, the detection support mainly plays a role of installing the surface difference detection device disclosed in the application and fixing a part to be measured 26. In detection, the displacement amount of the displacement sensor 5 on each detection contact assembly 4 is measured by the strip-shaped transmitter 6, then the smart terminal calculates the surface difference value of each detection point 27 by subtracting the calibration data from the detection value, and then the maximum surface difference value is subtracted from the minimum surface difference value to calculate the range. The application is convenient to operate, fast in detection speed, and high in detection result accuracy.

[0026] The application will be further described below. In the embodiment, the detection contact group fixing plate 3 is composed of a first plate body 7 and a second plate body 8, the first plate body 7 is horizontally arranged, the second plate body 8 is vertically arranged, one end of the first plate body 7 is fixedly connected with the bottom of the second plate body 8, and the two are in "L" shape, the first plate body 7 and the second plate body 8 are integrally formed; the first plate body 7 is parallel to the base 1, two guide sliding blocks 9 are fixedly arranged on the bottom surface of the first plate body 7, the two guide sliding blocks 9 are slidingly installed on the two guide sliding rails 2 respectively, and the first plate body 7 can reciprocate on the two guide sliding rails 2 through the two guide sliding blocks 9. A driving cylinder 10 is arranged on the base 1 at the end of the guide sliding rail 2 away from the part to be measured 26, the extension end of the driving cylinder 10 is connected with one of the guide sliding blocks 9, and the driving cylinder 10 is connected with an air source through an air pipe. The driving cylinder 10 is used for providing a pushing force or a pulling force for the guide sliding block 9, so as to realize the reciprocating movement of the first plate body 7.

[0027] Further, all detection contact assembly 4 structures are equal, the number and position of detection contact assembly 4 are determined according to the number and position of detection points on the part to be detected; detection contact assembly 4 includes detection contact 11, contact fixed plate 12, connecting rod fixed block 13, contact connecting rod 14, buffer pad 15 and nitrogen spring 16, a plurality of contact assembly mounting holes are provided on the second plate body 8, two contact assembly mounting holes are required for each detection contact assembly 4, each detection contact assembly 4 has two connecting rod fixed blocks 13, the connecting rod fixed block 13 is a "T" shaped structure, the connecting rod fixed block 13 is composed of a tube body and an end plate, the end plate is fixedly arranged on the outer wall of one end of the tube body, the tube body part of the connecting rod fixed block 13 is inserted and interference fit with the contact assembly mounting hole, the end plate on the connecting rod fixed block 13 is fixed on the second plate body 8 by bolts, the tube body part of the connecting rod fixed block 13 is arranged horizontally, one contact connecting rod 14 is inserted and connected in the tube body of the two connecting rod fixed blocks 13, the contact connecting rod 14 is clearance fit with the tube body of the connecting rod fixed block 13, the contact connecting rod 14 can move smoothly in the through hole of the connecting rod fixed block 13, one end of the contact connecting rod 14 is fixedly connected with one side of the contact fixed plate 12, the detection contact 11 is fixedly installed on the other side of the contact fixed plate 12, the other end of the contact connecting rod 14 extends out of the connecting rod fixed block 13 and is fixedly connected with one side of the buffer pad 15, the other side of the buffer pad 15 abuts against the nitrogen spring 16. The connecting rod fixed block 13 supports, protects (prevents breakage) and guides the contact connecting rod 14.

[0028] Further, it further includes a stop buffer plate 17, the stop buffer plate 17 is fixedly connected with the detection contact group fixed plate 3 through a plurality of connecting rods 18, the stop buffer plate 17 and the contact fixed plate 12 are arranged parallel to the second plate body 8 on the detection contact group fixed plate 3, and the stop buffer plate 17 and the contact fixed plate 12 are located on opposite sides of the second plate body 8, the nitrogen spring 16 is installed on the stop buffer plate 17, and a stop pin 31 is installed at one end of the nitrogen spring 16 towards the buffer pad 15. In order to be operable, one end of the connecting rod 18 is directly screwed with the second plate body 8, and the other end of the connecting rod 18 is connected and fixed with the stop buffer plate 17 by a countersunk nut 28. Correspondingly, a threaded hole 29 for installing the connecting rod 18 should be provided on the second plate body 8, and a stepped hole 30 for installing the connecting rod 18 should be provided on the stop buffer plate 17.

[0029] The height adjusting pin 23 is arranged on the surface of the cushion pad 15 facing the stop cushion plate 17, and the limiting screw 19 is arranged on the stop cushion plate 17 and opposite to the height adjusting pin 23. The distance between the height adjusting pin 23 and the limiting screw 19 is determined by the stroke of the detection contact head assembly. By arranging the height adjusting pin 23 and the limiting screw 19, the damage of the terminal compression spring 21 and the nitrogen spring 16 caused by the excessive back-off force after the detection contact head 11 contacts the part can be prevented, and the terminal compression spring 21 and the nitrogen spring 16 can be effectively protected.

[0030] The spring support rod 20 is fixed on the surface of the contact head fixing plate 12 facing the second plate body 8, the terminal compression spring 21 is sleeved on the spring support rod 20, and the support rod avoiding hole 22 is arranged on the second plate body 8 and opposite to the spring support rod 20. One end of the spring support rod 20 is fixedly connected with the contact head fixing plate 12 through screw thread, the other end of the spring support rod 20 is a free end, the free end is inserted into the support rod avoiding hole 22 and is in sliding connection, one end of the terminal compression spring 21 is in contact with the contact head fixing plate 12, and the other end of the terminal compression spring 21 is in contact with the second plate body 8.

[0031] In order to protect the part to be detected and prevent the detection contact head 11 from damaging the surface of the part to be detected, the bumper 24 is preferably arranged on the base 1, the bumper 24 is fixed on the base 1 through the bumper support 25, the bumper 24 is horizontally arranged, the elastic contact surface is arranged on the bumper 24, when the detection contact head 11 contacts the part to be detected 26, the bumper 24 also contacts the detection tool body except the detection surface, the impact force of the detection contact head 11 contacting the part to be detected 26 can be buffered, the influence on the surface quality of the part to be detected 26 is reduced, the deformation of the part is also reduced for the large thin plate part, and the detection is more accurate. In addition, the force acting on the mechanism when contacting the part is more balanced and stable.

[0032] The intelligent terminal can adopt a PC computer, a notebook computer, an IPAD or a smart phone. The intelligent terminal has an editing data display program, the program stores calibration data, can receive displacement data of the displacement sensor collected by the strip-shaped transmitter, then calculates the face difference value by subtracting the displacement data from the calibration data, can also calculate the extreme difference value by subtracting the maximum face difference value from the minimum face difference value, and displays the face difference value and the extreme difference value.

[0033] It should be noted that the displacement sensor 5 is preferably fixedly installed on the side surface of the detection contact head 11 because the end of the detection contact head fixing plate 3 needs to contact the detection point 27 on the part to be detected 26.

[0034] In the detection of the curved surface part, the surface corresponding to each detection point 27 has a height difference, in order to ensure that each detection contact 11 can contact the detection point 27 on the part, the length of the detection contact 11 is also not equal. In the embodiment, the detection contact 11 used in the development of the detection device is designed to have different lengths for each detection point, and is developed and calibrated together with the detection device. This detection contact can only be used for the detection of one kind of part.

[0035] In another embodiment, the detection contact 11 is designed as a telescopic structure, and a spring is arranged at the bottom (the spring force is small and only supports the telescopic movement of the detection contact). Several specifications with different telescopic amounts can be designed, and the detection contact of the corresponding specification is installed according to the size of the height difference of the surface of the measured part. The contact that first contacts the part is compressed, the detection mechanism continues to move forward until the last contact contacts the part, and the detection stroke ends. The universal contact is used as a standard part and can be installed and used at different detection positions at will, which is convenient to operate and saves the manufacturing cost.

[0036] In a preferred embodiment, a position-adjustable detection contact structure is also provided. The detection contact 11 is fixed on an installation plate 32, the first waist-shaped hole 33 is arranged on the installation plate 32, the second waist-shaped hole 34 is arranged on the contact fixing plate 12, and the installation plate 32 is installed on the contact fixing plate 12 through the bolt assembly 35. The position of the detection contact 11 can be adjusted by loosening the fixing nut of the bolt assembly 35. After moving to the specified position, the screw is tightened to complete the adjustment of the detection position. The position-adjustable detection contact can quickly and conveniently change the detection position and detect each point on one assembly surface of the part.

[0037] In addition, when the surface of the measured part 26 is a curved surface, the end contact surface of the detection contact 11 is preferably designed as a plane to accurately capture the detection point and offset the deviation caused by the inaccurate contact position. When the surface of the measured part 26 is a plane, the end of the detection contact 11 should be designed as a sharp head for point-surface contact to accurately pick up the detection point.

[0038] The method for detecting the surface difference and the extreme difference of the measured part by using the application is as follows:

[0039] The base 1 of the application is fixed on the detection support, and after being fixed for the first time, the device is calibrated by three coordinates and can be put into use. During detection, the detection contact 11 of the corresponding size is selected according to the measured part 26, and the detection contact 11 is installed on the detection contact assembly 4 in the corresponding position, and then the detection can be started.

[0040] When the detection contact 11 contacts the detection surface of the part to be detected 26, the detection contact 11 and the contact fixed plate 12 stop moving immediately, but due to inertia, the whole mechanism continues to move forward, the detection contact group fixed plate 3 moves forward, and the terminal compression spring 21 is compressed, the compressed terminal compression spring 21 gives the contact fixed plate 12 pressure, so that the detection contact 11 has a certain pressure on the part to be detected 26. At the same time, the reaction force after contacting the part to be detected 26 makes the detection contact 11 drive the contact fixed plate 12, the contact connecting rod 14 and the buffer pad plate 15 to retreat as a whole. During the retreat, the buffer pad plate 15 contacts the stop pin 31, the stop pin 31 can be elastically extended and retracted under the action of the nitrogen gas spring 16, the stop pin 31 contacts the buffer pad plate 15, and the buffer pad plate 15 is elastically retracted. The height adjusting pin 23 works with the limiting screw 19, and the distance between them is determined by the retreat stroke of the whole mechanism when contacting the part, when the mechanism retreats to the position, the height adjusting pin 23 contacts the limiting screw 19, which plays a limiting role. The nitrogen gas spring 16 is compressed during the retreat, driving the stop buffer plate 17 to retreat, and the stop buffer plate 17 drives the detection contact group fixed plate 3 to retreat through the connecting rod 18, at this time the detection part of the whole device retreats to the state that the detection contact 11 contacts the part to be detected 26 without pressure, completing a detection work. After completion, the mechanism retreats to the set position under the drive of the driving cylinder 10.

[0041] In the above working cycle, please combine Figures 1-8 The displacement sensor 5 on each detection contact 11 starts recording displacement when it passes through the e-direction rays emitted by the strip-shaped emitter 6, and the maximum displacement is recorded when the detection contact 11 contacts the detection point 27, which is recorded as L. The strip-shaped emitter 6 sends the collected displacement data L to the intelligent terminal, and the intelligent terminal calls the calibration value L0, which is the displacement amount of each detection contact 11 when contacting the 0-error profile during equipment calibration. L-L0 obtains ΔL, which is the profile deviation, that is, the surface difference of each detection point.

[0042] The intelligent terminal can directly display ΔL, which is the actual value of the surface difference of each detection point, and also can display whether each detection point 27 is "qualified" or "unqualified", for example, the surface difference tolerance requirement of a general part is-0.5 to 0.5, and the value obtained by 0.5-|ΔL| is greater than 0, which is displayed as qualified, and less than 0, which is displayed as unqualified.

[0043] The above detailed description of the structure, features and effects of the present application is based on the embodiments shown in the drawings. The above description is only the preferred embodiments of the present application, but the present application is not limited to the embodiments shown in the drawings. Any changes or modifications made in accordance with the concept of the present application, or equivalent embodiments with equivalent changes, are still within the scope of the present application.

Claims

1. A face difference detection device, comprising a base (1), the top surface of which is provided with two parallel guide rails (2), characterized in that: Also include detection contact group fixed plate (3), the detection contact group fixed plate (3) is slidably connected with two guide rails (2), a plurality of detection contact assemblies (4) are installed on the detection contact group fixed plate (3), a displacement sensor (5) is arranged on each detection contact assembly (4), a strip-shaped transmitter (6) is fixed on the top surface of the base (1), and the strip-shaped transmitter (6) is connected with a smart terminal; The detection contact group fixed plate (3) is composed of a first plate body (7) and a second plate body (8), the first plate body (7) is horizontally arranged, the second plate body (8) is vertically arranged, one end of the first plate body (7) is fixedly connected with the bottom of the second plate body (8), and the first plate body (7) and the second plate body (8) form an L shape, two guide sliding blocks (9) are fixed on the bottom surface of the first plate body (7), and the two guide sliding blocks (9) are slidably installed on the two guide rails (2) respectively; All the detection contact assemblies (4) are equal in structure, the detection contact assembly (4) comprises a detection contact (11), a contact fixed plate (12), a connecting rod fixed block (13), a contact connecting rod (14), a buffer pad (15) and a nitrogen spring (16), a contact assembly mounting hole is formed in the second plate body (8), the number of the connecting rod fixed block (13) is two, the two connecting rod fixed blocks (13) are fixed on the second plate body (8), one of the contact connecting rods (14) is insertedly connected with the two connecting rod fixed blocks (13) respectively, one end of the contact connecting rod (14) is fixedly connected with one side of the contact fixed plate (12), the detection contact (11) is fixedly installed on the other side of the contact fixed plate (12), the other end of the contact connecting rod (14) extends out of the connecting rod fixed block (13) and is fixedly connected with one side of the buffer pad (15), and the other side of the buffer pad (15) is in abutment with the nitrogen spring (16); Also include a stop buffer plate (17), the stop buffer plate (17) is fixedly connected with the detection contact group fixed plate (3) through a plurality of connecting rods (18), the stop buffer plate (17) and the contact fixed plate (12) are arranged in parallel with the second plate body (8), and the stop buffer plate (17) and the contact fixed plate (12) are located on opposite sides of the second plate body (8), and the nitrogen spring (16) is installed on the stop buffer plate (17); The height adjusting pin (23) is arranged on the surface of the buffer pad (15) facing the stop buffer plate (17), and the limiting screw (19) is arranged on the stop buffer plate (17) in opposite arrangement with the height adjusting pin (23).

2. The face difference detection apparatus according to claim 1, characterized by: The base (1) is provided with a driving cylinder (10), and the telescopic end of the driving cylinder (10) is connected with one of the guide sliding blocks (9).

3. The face difference detection apparatus according to claim 2, characterized by: The contact fixing plate (12) is fixed with a spring supporting rod (20) on the surface facing the second plate body (8), the spring supporting rod (20) is sleeved with a terminal pressing spring (21), and the second plate body (8) is provided with a supporting rod avoiding hole (22) opposite to the spring supporting rod (20).

4. The face difference detection apparatus according to claim 1, characterized by: The intelligent terminal is a PC computer, a notebook computer, an IPAD or a smart phone.

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