Detection tool for detecting automobile cabin supporting rod assembly

Abstract

The utility model relates to a detection tool for detecting a supporting rod assembly of an automobile cabin, which comprises a three-coordinate calibration part, a detection tool storage part and a product detection part which are arranged on a bottom plate, the product detection part comprises a first detection block, a second detection block, a third detection block and a clamp, the first detection block, the second detection block and the third detection block are arranged on the bottom plate and used for positioning a product, the clamp is used for clamping a to-be-detected product, the first detection block is provided with a positioning face and a positioning pin, and each detection block is provided with a movable detection plug pin used for measuring the position degree of a hole. A go-no go gauge is stored in the gauge storage part. According to the utility model, the two positioning surfaces and the two positioning pins of the detection tool can be utilized to control the degree of freedom of a product and serve as the positioning reference of the product when the automobile cabin supporting rod assembly is detected, the pressing mechanism is utilized to avoid the displacement of the product in the detection process, and the outline and the hole site of the product are detected after the positioning is completed. Whether the product is qualified or not is judged through the go-no go gauge and the detection pin.

Description

Technical Field

[0001] The utility model belongs to the technical field of inspection tools, and particularly relates to an inspection tool for detecting an engine compartment support rod assembly of an automobile. Background Technique

[0002] After the manufacture of the engine compartment support rod assembly of an automobile is completed, the manufacturing quality needs to be controlled. At present, the most commonly used tool for detecting the product to be tested is a coordinate measuring machine. This detection tool has high precision and high intelligence and is widely used. However, when this tool is used to detect the product to be tested, it takes a long time and the measurement efficiency is low. It has a good effect on single pieces without samples, but it is difficult to meet the requirements of batch production detection. At the same time, in order to complete the work quickly and accurately, the operator needs to invest a lot of energy and time, and also needs to undergo careful training to ensure that the measurement is error-free, which makes the enterprise pay a huge cost.

[0003] Therefore, it is very unsuitable for products to be tested that require large-scale production and rapid and multi-faceted detection. The form and position tolerances such as flatness, profile and position tolerance that need to be detected in the engine compartment support rod assembly of an automobile cannot be detected by general measuring tools and cannot meet the production requirements on site.

[0004] Therefore, it is necessary to specifically design an inspection tool for the engine compartment support rod assembly of an automobile, which is simple to operate, saves time and cost, and can quickly judge whether the engine compartment support rod assembly is qualified. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide an inspection tool for detecting an engine compartment support rod assembly of an automobile, and solve the problems that the coordinate measurement in the batch production of the engine compartment support rod assembly product has low efficiency and high cost, and the conventional measuring tools are difficult to reflect the true state of the product.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows: A fixture for detecting the engine compartment support rod assembly of an automobile is provided, which includes a three-coordinate calibration part, a fixture storage part and a product detection part arranged on a bottom plate. The product detection part includes a detection block one, a detection block two, a detection block three arranged on the bottom plate for positioning the product and a clamp for clamping the product to be detected. A detection block support is provided at the bottom of the detection block one. The detection block one is in a long strip shape, its length matches the length of the product to be detected, and positioning surfaces for product surface positioning are provided on the upper surfaces at both ends in the length direction. Above the positioning surfaces, a main positioning pin and a secondary positioning pin that match the main positioning hole and the secondary positioning hole of the product are provided. An active detection pin is provided on each side of the main positioning pin and the secondary positioning pin. A number of active spring detection pins that match the bottom hole positions of the product to be detected are provided on the detection block one; the detection block two is used to limit the width direction of the product to be detected and is fixed on both sides in the width direction of the detection block one. A number of active spring detection pins that match the hole positions on both sides of the product to be detected are provided on the detection block two; the detection block three is used to limit the height direction of the product to be detected and is arranged above the detection block one through a flipping mechanism. The distance from the lower surface of the detection block three to the upper surface of the positioning surface matches the thickness of the product to be detected. A number of active spring detection pins that match the top hole positions of the product to be detected are provided on the detection block three; the clamp includes two clamp supports arranged at both ends in the length direction of the detection block one, and a pressing clamp is provided on the clamp support; the fixture storage part includes a go-no-go gauge storage box arranged at a corner of the bottom plate, and a number of go-no-go gauges are provided in the go-no-go gauge storage box.

[0007] Preferably, the three-coordinate calibration part includes three measurement reference blocks located at the corners of the fixture.

[0008] Preferably, the whole fixture is made of aluminum alloy material.

[0009] Preferably, the flipping mechanism includes a horizontal flipping mechanism and a vertical flipping mechanism.

[0010] Preferably, the go-no-go gauges include a go-no-go gauge one, a go-no-go gauge two and a go-no-go gauge three. The specification of the go-no-go gauge one is φ5±1.5, the specification of the go-no-go gauge two is φ5±0.6, and the specification of the go-no-go gauge three is φ5±0.5.

[0011] Preferably, a number of lifting lugs are provided on both sides of the bottom plate.

[0012] The beneficial effects are as follows: When detecting the engine compartment support rod assembly of an automobile, the present utility model can control the degrees of freedom of the product by using two positioning surfaces and two positioning pins of the inspection fixture and use them as the positioning reference of the product, and avoid displacement of the product during the detection process through the pressing mechanism. After positioning, the outer contour and hole positions of the product are detected. When the through end of the form tolerance go-no-go gauge can be inserted and the non-through end cannot be inserted, and all the inspection pins can completely enter the holes, it is judged that the product to be tested is qualified; otherwise, it is unqualified.

[0013] Conventional inspection tools such as calipers, altimeters, two-dimensional projectors, etc. cannot accurately measure geometric tolerances. Compared with the positioning tools used when measuring on a coordinate measuring machine, the special inspection fixture is simple to operate, saves time and cost, and can quickly judge whether the dimensions of the engine compartment support rod assembly of an automobile are qualified. Brief Description of the Drawings

[0014] Figure 1 It is a three-dimensional view of an inspection fixture for detecting the engine compartment support rod assembly of an automobile when a product to be tested is installed.

[0015] Figure 2 It is a three-dimensional view of an inspection fixture for detecting the engine compartment support rod assembly of an automobile.

[0016] Figure 3 It is a top view of an inspection fixture for detecting the engine compartment support rod assembly of an automobile when a product to be tested is installed.

[0017] Figure 4 It is a front view of an inspection fixture for detecting the engine compartment support rod assembly of an automobile when a product to be tested is installed.

[0018] Figure 5 It is a left view of an inspection fixture for detecting the engine compartment support rod assembly of an automobile when a product to be tested is installed.

[0019] Figure 6 It is a structural schematic diagram of the engine compartment support rod assembly to be tested.

[0020] Among them, 1 - bottom plate, 2 - measurement reference block, 3 - positioning surface, 4 - main positioning pin, 5 - secondary positioning pin, 6 - pressing clamp, 7 - clamp support, 8 - first inspection block, 9 - second inspection block, 10 - third inspection block, 11 - vertical flipping mechanism, 12 - horizontal flipping mechanism, 13 - flipping mechanism support, 14 - inspection block support, 15 - movable inspection pin, 16 - movable spring inspection pin, 17 - pin seat, 18 - go-no-go gauge storage box, 19 - first go-no-go gauge, 20 - second go-no-go gauge, 21 - third go-no-go gauge, 22 - lifting lug; 23 - product to be tested; 24 - top surface. Specific Embodiments

[0021] The present utility model will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by the appended claims of this application.

[0022] As Figure 6 shown, the total assembly of the engine compartment support rod of an automobile is the product to be tested 23. The key dimensions include the flatness of the top surface 24 and the bottom surface to ensure that the gap meets the requirements during installation; it also includes the position tolerances of several holes located on the top surface, side surfaces and bottom surface to ensure that each pin can be fixed in place during installation to prevent shaking. Each form and position tolerance is based on the bottom surface at both ends in the length direction.

[0023] As Figure 1 、 2 As shown in Figures 1, 2, 3, 4, and 5, the present utility model provides a fixture for detecting the total assembly of the engine compartment support rod of an automobile, including a three-coordinate calibration part, a fixture storage part and a product detection part provided on a bottom plate 1. The product detection part includes a detection block one 8, a detection block two 9, a detection block three 10 provided on the bottom plate 1 for positioning the product, and a clamp for clamping the product to be tested 23. A detection block support 14 is provided at the bottom of the detection block one 8. The detection block one 8 is in the shape of a long strip, and its length matches the length of the product to be tested 23. Positioning surfaces 3 for product surface positioning are provided on the upper surfaces at both ends in the length direction. A main positioning pin 4 and a secondary positioning pin 5 that match the main positioning hole and the secondary positioning hole of the product are provided above the positioning surface 3. An active detection pin 15 is provided on each side of the main positioning pin 4 and the secondary positioning pin 5. A number of active spring detection pins 16 that match the bottom hole positions of the product to be tested 23 are provided on the detection block one 8; the detection block two 9 is used to limit the width direction of the product to be tested 23 and is fixed on both sides in the width direction of the detection block one 8. A number of active spring detection pins 16 that match the hole positions on both sides of the product to be tested 23 are provided on the detection block two 9; the detection block three 10 is used to limit the height direction of the product to be tested 23 and is provided above the detection block one 8 through a flipping mechanism. The distance from the lower surface of the detection block three 10 to the upper surface of the positioning surface 3 matches the thickness of the product to be tested 23. A number of active spring detection pins 16 that match the top hole positions of the product to be tested 23 are provided on the detection block three 10; the clamp includes two clamp supports 7 provided at both ends in the length direction of the detection block one 8, and a pressing clamp 6 is provided on the clamp support 7; the fixture storage part includes a go-no-go gauge storage box 18 provided at a corner of the bottom plate 1, and a number of go-no-go gauges are provided in the go-no-go gauge storage box 18.

[0024] Among them, the detection block one 8 and the detection block two 9 surround the product to be measured 23 from the bottom and side, and the detection block three 10 covers the top surface of the product to be measured 23 through a flipping mechanism. Subsequently, the product to be measured 23 is initially positioned through the positioning surface 3, the main positioning pin 4, and the secondary positioning pin 5; the product is completely fixed by the clamp to prevent displacement of the product during the through-hole gauge and pin detection, which may affect the detection accuracy.

[0025] The flipping mechanism includes a horizontal flipping mechanism 12 and a vertical flipping mechanism 11. They are selected according to the height of different detection blocks three 10 respectively. For those with a lower height, the horizontal flipping mechanism 12 is selected, and for those with a higher height, the vertical flipping mechanism 11 is selected. Both the horizontal flipping mechanism 12 and the vertical flipping mechanism 11 include a flipping mechanism support 13, and a flipping pin connected to the detection block three 10 is provided on the flipping mechanism support 13, enabling the detection block three 10 to flip around the flipping pin and cover the top surface of the product to be measured 23 from the side of the product to be measured 23.

[0026] The movable spring detection pin 16 includes a tension spring and a detection pin installed in a pin sleeve. The outer diameter of the detection pin matches the inner diameter of the hole to be measured. In the normal state, the movable spring detection pin 16 remains in the retracted state. During the test, the detection pin is pushed into the hole to be measured. When the detection pin can be pushed to the bottom, the size is qualified. Then, release the movable spring detection pin 16, and it will automatically return to its original position under the spring force of the tension spring for the next detection.

[0027] The movable detection pin 15 includes a pin that is movably installed in a pin sleeve. During the detection, the pin is pushed into the hole to be measured. When the detection pin can be pushed to the bottom, the size is qualified. When it is confirmed to be qualified, hold the pin head and withdraw the pin for the next detection. The movable detection pin 15, the main positioning pin 4, and the secondary positioning pin 5 can be separately stored in the pin seat 17 or placed in the inspection tool storage part for easy access at any time.

[0028] The through-hole gauge includes a through-hole gauge one 19, a through-hole gauge two 20, and a through-hole gauge three 21. The specification of the through-hole gauge one 19 is φ5±1.5, the specification of the through-hole gauge two 20 is φ5±0.6, and the specification of the through-hole gauge three 21 is φ5±0.5. During the test, select the specific through-hole gauge according to the drawing markings.

[0029] The three-coordinate calibration part includes three measurement reference blocks 2 located at the corners of the inspection tool. The measurement reference blocks 2 are used for calibrating the three-coordinate measurement inspection tool acceptance when the inspection tool is just made, and are not involved in the subsequent product detection of the product in use.

[0030] The whole inspection tool is made of aluminum alloy material. The aluminum alloy material is relatively light as a whole and has sufficient hardness, which helps to reduce the weight and is convenient for handling. Since the size of the present utility model is large and the weight is heavy, a number of lifting lugs 22 are provided on both sides of the bottom plate 1 for easily transferring the storage position as needed.

[0031] The usage method of the present utility model is described in detail below: 1) Open all the clamping pliers 6 and the flipping mechanism, and pull out all the positioning pins (including the main positioning pin 4 and the secondary positioning pin 5) and the movable detection pin 15, so that the whole fixture is in a non-working state; 2) Place the product to be measured 23 on the fixture, and the surface of the product to be measured 23 should be cleaned, free of oil stains and obvious burrs; 3) Correctly position according to the operation instruction manual, press the product to be measured 23 against the two positioning surfaces 3, insert the main positioning pin 4 and the secondary positioning pin 5 and close all the clamping pliers 6 to confirm that the product to be measured 23 will not move; 4) Close and lock the flipping mechanism, and use the movable detection pin 15 and the movable spring detection pin 16 to detect all the holes that need to be detected; 5) Use the through gauge one 19, the through gauge two 20, and the through gauge three 21 to detect the profile of the key planes of the product respectively; 6) After the detection is completed, open the clamping pliers 6 and the flipping mechanism at each place, pull out the positioning pins and the detection pins, take out the product to be measured 23, and then restore the mechanisms at each place of the fixture to their original positions.

[0032] Using the present utility model can quickly judge whether the geometric tolerances of the engine compartment support rod assembly of the automobile meet the requirements of the drawing, improve the production efficiency, and has simple operation, low price, and reduces the enterprise cost.

Claims

1. A fixture for detecting the engine compartment support rod assembly of an automobile, comprising a three-coordinate calibration part, a fixture storage part and a product detection part arranged on a bottom plate, characterized in that, The product inspection department includes inspection blocks one, two, and three for positioning products and a clamp for clamping the product to be inspected, which are arranged on the base plate. A support for the inspection block one is provided at the bottom of the inspection block one. The inspection block one is in a long strip shape, with its length matching the length of the product to be inspected, and positioning surfaces for product surface positioning are provided on the upper surfaces at both ends in the length direction. Above the positioning surfaces, a main positioning pin and a secondary positioning pin that match the main positioning hole and the secondary positioning hole of the product are provided. An active inspection pin is provided on each side of the main positioning pin and the secondary positioning pin. A number of active spring inspection pins that match the bottom hole positions of the product to be inspected are provided on the inspection block one; The inspection block two is used to limit the width direction of the product to be inspected and is fixed on both sides in the width direction of the inspection block one. A number of active spring inspection pins that match the hole positions on both sides of the product to be inspected are provided on the inspection block two; The inspection block three is used to limit the height direction of the product to be inspected and is arranged above the inspection block one through a flipping mechanism. The distance from the lower surface of the inspection block three to the upper surface of the positioning surface matches the thickness of the product to be inspected. A number of active spring inspection pins that match the top hole positions of the product to be inspected are provided on the inspection block three; The clamp includes two clamp supports arranged at both ends in the length direction of the inspection block one, and a pressing clamp is provided on the clamp support; The gauge storage department includes a go-no-go gauge storage box arranged at a corner of the base plate, and a number of go-no-go gauges are provided in the go-no-go gauge storage box.

2. The fixture for detecting the engine compartment support rod assembly of an automobile according to claim 1, characterized in that, The CMM calibration department includes three measurement reference blocks located at the corners of the inspection tool.

3. The inspection fixture for inspecting the engine compartment support rod assembly of an automobile according to claim 1, wherein The whole inspection tool is made of aluminum alloy material.

4. The fixture for detecting the engine compartment support rod assembly of an automobile according to claim 1, wherein The flipping mechanism includes a horizontal flipping mechanism and a vertical flipping mechanism.

5. The fixture for detecting the engine compartment support rod assembly of an automobile according to claim 1, wherein, The go-no-go gauges include go-no-go gauge one, go-no-go gauge two, and go-no-go gauge three. The specification of the go-no-go gauge one is φ5±1.5, the specification of the go-no-go gauge two is φ5±0.6, and the specification of the go-no-go gauge three is φ5±0.

5.

6. The inspection fixture for inspecting the engine compartment support rod assembly of an automobile according to claim 1, characterized in that, A number of lifting lugs are provided on both sides of the base plate.

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